Dietetic advice for immunodeficiency

Author

  • Siro Passi

  • Chiara De Luca

Publisher

  • Continuum

Category

  • Cure of AIDS

Topic

  • Alternative Cure of AIDS

  • Nutritional Supply

  • Oxidative Stress

  • Malnutrition

  • Stress-Related Immune Depression

Article Type

  • Editorial Article

Publish Year

  • 1999

Meta Description

  • The content discusses the importance of diet and environment in disease prevention, focusing on immunodeficiency. It also includes dietary advice for health.

Summary

  • This content discusses the importance of macro and micronutrients for human health and their relationship to immunocompetence. It explains that the quality and quantity of digested nutrients can affect an individual's nutritional state and immune function. The content provides dietetic advice for individuals with immunodeficiency, which can be modified based on their specific needs. It also mentions the monitoring of blood analyses to assess the effectiveness of the advice. The content further explains the role of carbohydrates, vitamins, mineral elements, proteins, and lipids in the body. It highlights the importance of essential fatty acids and the potential health benefits of n-3 polyunsaturated fatty acids. The content cautions against the exaggerated claims of certain diets and nutrients, emphasizing the need for caution to avoid toxicity or nutrient deficiencies.

Meta Tag

  • Immunodeficiency

  • Dietetic advice

  • Micronutrients

  • Vitamins

  • Minerals

  • Antioxidants

  • Cell health indicators

  • Oxidative stress

  • Nutritional requirements

  • Metabolism

  • HIV positive

  • Essential fatty acids

Featured Image

 

Featured Image Alt Tag

  • Keyword of the image

By Siro Passi and Chiara De Luca
Cell Aging Center, Istituto Dermopatico dell'Immacolata (IDI) Rome, Italy

Original Publication
Continuum volume 5, number 5 - mid-winter 1999


Dr. Siro Passi graduated in biochemistry from the University of Rome in 1969. He is head of the Cell Aging Center of the IDI Research Institute (Rome). Over the past two decades he has investigated in vivo natural defence mechanisms of living cells against reactive oxygen and nitrogen species and other toxic radicals, and has published many papers on oxidative stress and its consequences in different pathologies. On the basis of his studies of patients diagnosed HIV positive and/or with AIDS in the early '90s, he asserted that HIV phenomena are the outcome of oxidative stress, not vice versa. In 1995 he published with Prof. Ferdinando Ippolitono, a 'heretic' book, AIDS - new frontier, ed. G. Lombardo, Rome.

Chiara De Luca graduated in Biology in 1985, and Pathology in 1989. Her research has included oxidative stress in animals and plant models, inhibition of aflatoxin induced tumor development and studies on the role of lipoperoxidation in cutaneous aging. At the Cell Aging Center, she works on the role of antioxidants and polyunsaturated fatty acids in blood and tissues, and oxidative mechanisms in the induction and development of infectious, pigmentary and neoplastic pathologies. Since 1991 she has collaborated with the National Institute for Nutrition, on the prevention of mycotoxin contamination of the main components of the national diet, the determination of additives in special foods and total diets, the study of antioxidants in food and the benefits of antioxidant supplementation by the use of 'functional foods'.

 

Diet, by definition, is not only the food in regular use, but also a prescribed course of food designed for the treatment and prevention of diseases. Physicians of antiquity, first of all Hippocrates in Greece and Rhases in Iran, taught: "If a diet can cure, prescribe no other remedy".

 

With the growth of scientific knowledge, dietetics has become an applied science, and today there is an increased understanding of the role of nutritional factors in degenerative diseases, prolonged illness, acute injury, and complicated surgical and medical procedures, which are all frequently accompanied by malnutrition. The immunological disorders associated with malnutrition were named "Nutritionally Acquired Immune Deficiency Syndrome" (NAIDS), much before the trumpeting appearance of HIV. Nutrition must be considered a fundamental intervention in the early and ongoing treatment of immunodeficiency; in particular, micronutrients represent important cofactors for the optimal functioning of the immune system and are able to enhance disease resistance in humans and animals. As a consequence, a plethora of commercial dietary products and practices purporting to enhance well being or reduce weight is in vogue, mainly in advanced countries. In addition, several companies have manufactured vitamin E, b-carotene, selenium, vitamin C, superoxide dismutase capsules, Chinese herbs, multivitamin tablets, and many other microelements as a panacea for all diseases. This is surely a multi-million dollar business, but many claims are unlikely to be true. And physicians and people should be alert since some of these diets and nutrients may induce toxicity states or nutrient deficiency in individuals adhering to them. Before getting on to the subject, we take the liberty of introducing some general considerations on nutrition.

 

Nutrition: general considerations (1-5)

All natural foods, the composition of which is very complex, yield nutrients that, on digestion, are generally classified into proteins, lipids or fats, carbohydrates, vitamins and mineral elements. These provide the body with the compounds necessary for the production of energy in the form of work and heat, and for growth, repair and reproduction of every living cell. Carbohydrates, lipids and proteins are considered macronutrients, and are interchangeable sources of energy: lipids yield up to 9 kcal/g, protein and carbohydrates up to 4 kcal/g. Vitamins and mineral elements are considered as micronutrients.

 

MACRONUTRIENTS

Proteins.

Human proteins are very large molecules which represent an essential structural part of cells and are built up from the 20 "standard" amino acids, listed in Table 1, and divided into essential and non-essential amino acids. The variety of ways in which they combine can provide millions of different proteins, which are "species-specific" in that their structures differ from one species to another.

 Table 1. Essential and non-essential amino acids in humans.

Essential

Non-essential

Essential

Non-essential

Histidine

Alanine

Leucine

Cysteine

Isoleucine

Glycine

Lysine

Proline

Methionine

Serine

Phenylalanine

Tyrosine

Threonine

Glutamine

Valine

Asparagine

Tryptophan

Aspartic acid

Arginine*

Glutamic acid

Only 10 amino acids have been shown to be "essential ", i.e. indispensable nutrients for humans and must be obtained from diet; the remaining ones can be synthesized by common intermediates, mainly deriving from the breakdown products of the metabolism of essential aminoacids.

*Even though mammals synthesize arginine by the urea cycle, the aminoacid is considered as essential, since it is required in a higher amount than can be produced by this route, mainly during normal childhood development.

Since different proteins contain different amounts of the essential amino acids, a balanced protein diet must contain different protein sources, which complement each other to supply the right proportion of all the essential amino acids. For example, milk proteins contain them in the proper proportion for a correct human nutrition; bean proteins, in contrast to wheat proteins, are rich in lysine, but are lacking in methionine. Any excess amino acids in the diet, beyond the effective needs of the body, are metabolized and burnt as a source of energy, which is largely more expensive than that deriving from fats or carbohydrates. In any case, as a general guide, it is recommended that the protein intake should be equivalent to 11-14% of the total calories in the diet.

Lipids or fats.

Lipids, partly deriving from diet, and partly from surplus carbohydrates in the food, provide the main reserve of energy. The term "lipids" includes both molecules that contain fatty acids (Table 2) - examples being triglycerides and phospholipids - and molecules such as cholesterol and steroid hormones displaying hydrocarbon ring structures. Recently, the terms "n-3 and n-6 polyunsaturated fatty acids &endash; PUFA ", in contrast with saturated fatty acids, have become very familiar to the general public. They have been associated with the concept of "healthy fat", and oils such as "evening primrose oil" or "fish oil", have been promoted by wide advertising. It is important to underline that there are no pure "saturated" or "polyunsaturated" sources of dietary fats. In fact, most food triglycerides or phospholipids contain a mixture of saturated, monounsaturated and polyunsaturated fatty acids. Thus, for example, polyunsaturated corn oil contains approximately 20 % saturated fatty acids, and saturated lard has approximately equal levels of saturated and monounsaturated fatty acids.

 Table 2. Natural fatty acids occurring in common foods, as triglycerides or phospholipids.

Common name

Main Sources

Common name

Main Sources

Palmitic acid (C16:0)

Palm oil, butter, cheese and other animal fats and oils

Stearic acid (C18:0)

Tallow, butter, cheese, and other animal fats and oils

Oleic acid (C18:1 n-9)

Olive and hazel oils

Linolenic acid (C18:2 n-6)

Many seed oils

a-linolenic acid (C18:3 n-3)

Linseed and rapeseed oils

g-linolenic acid (C18:3 n-6)

Borago and evening primrose oils

di-homo-g-linolenic acid (C20:3 n-6)

Human milk

Arachindonic acid (C20:4 n-6)

Animal membranes (phospholipids)

Eicosapentaenoic acid (C20:5 n-3)

Fish oils

Docosahexaenoic acid (C22:6 n-3)

Fish oils, nervous system (phospholipids)

Linoleic acid and a-linolenic acid are thought to be essential in the human diet and are known as essential fatty acids (EFA). Our cells are unable to synthesize them, and therefore they must be obtained mainly by food of vegetable origin. EFA, in the organism, can both supply energy by means of their oxidation and undergo biochemical transformations by means of desaturase and elongase enzymes to produce n-6 or n-3 polyunsaturated fatty acids (PUFA) with a higher number of double bonds, such as C20:3 n-6, C20:4 n-6, C20:5 n-3, C22:6 n-3, etc.

From a physio-pathological point of view, it has been suggested that:

n-6 PUFA may play an aetiological role in heart diseases, and cancer cells thrive on them;

n-3 PUFA may reduce the risk of both cancer and cardiovascular diseases;

monounsaturated fatty acids may help against cardiovascular diseases;

saturated fatty acids may be partly responsible for the degenerative changes in the arteries, sometimes resulting in coronary thrombosis;

trans-unsaturated fatty acids, i.e. unsaturated fatty acids with double bond in trans position, artificially generated during the process of hydrogenation of PUFA, and found in packaged snacks, may be involved in cardiovascular diseases and breast cancer.

Carbohydrates

Carbohydrates provide most of the energy (up to 90%) in almost all human diets; in any case, a well-balanced diet normally contains enough carbohydrates to provide 55-65% of total calories. The main carbohydrate in most natural foodstuff is starch that, during digestion and metabolism, is finally converted into glucose. This is carried by the blood to tissues, where it is either oxidized at once or converted to fat, since the body has a very limited capability for storing it as glycogen in muscles and liver.

 

MICRONUTRIENTS: vitamins and mineral elements (Table 3)

Vitamins.

Vitamins are classified as fat soluble (A, D, E and K) or water soluble (B group and C). The former ones are mainly derived from animal or vegetable fats; the vitamin B group from whole grain cereals, and vitamin C from fresh fruits and green vegetables.

Mineral elements.

The main mineral elements occurring in the body at concentration >0.005% are calcium, phosphorus, and potassium. Other elements such as iron, magnesium, sodium, zinc, iodine, copper, selenium, fluorine, cobalt, chromium occur in much lower concentrations (< 0.005 %).

Elements such as gold and silver found in the body do not appear to play a recognized metabolic role, while other elements such as barium and strontium are only suspected of being essential.

 

THE PRINCIPAL MICRONUTRIENTS (VITAMINS & MINERALS)

Table 3. The principal micronutrients.

Micronutrients

Main natural sources

(µg /100 g)

  Main Functions

Recommended dietary allowances (RDA) for healthy adults (19-50 yr), males.

Recommended dietary allowances (RDA) for healthy adults (19-50 yr), males.

Micronutrients

Main natural sources

(µg /100 g)

  Main Functions

Recommended dietary allowances (RDA) for healthy adults (19-50 yr), males.

Recommended dietary allowances (RDA) for healthy adults (19-50 yr), males.

..

.

.

MALES

FEMALES

.

.

FAT SOLUBLE VITAMINS

.

.

Vitamin A

(Retinol)

Cow and pigs livers

5,000-10,000

Cod liver oil

15,000-20,000

Shark liver oil

600,000-10,000,000

Egg yolk

300-450

Parmesan cheese

300-350

Milk

30-50

Photoreceptor mechanism of retina;integrity of epithelia;glycoprotein synthese... antioxidant?

1,000 ug

800 ug

b-carotene

Carrots

5,000-12,000

Fennel

4,000-5,000

Broccoli, Cabbages

1,900-5,000

Apricots

1,000-4,000

Provitamin A; scavenger of singlet oxygen, suggested antioxidant in vivo...

See vitamin A

6 ug b-carotene=1 retinol equivalent (RE)

See vitamin A

6 ug b-carotene=1 retinol equivalent

Lycopene

Fresh ripe tomatoes

1,800-2,500

Scavenger of singlet oxygen; Suggested antioxidant in vivo

Non set

Non set

Vitamin D

UV irradiation of the skin

Cod liver oil

250-750

Tuna liver oil

5,000-10,000

Egg yolk

4-10

Calcium and phosphorus absorbtion; Reabsorption mineralisation and collagen maturation of bone...

10-5 ug

1 IU vitamin D = 0.025 ng cholecalcipherol

10-5 ug

1 IU vitamin D = 0.025 ng cholecalcipherol

Vitamin E

(d-RRR-a tocopherol)

Wheat germ oil

150,000-500,000

Cereal germs

12,000-14,000

Soya bean oil

120,000-160,000

Olive oil

10,000-20,000

Peanut oil

14,000-30,000

Egg yolk

1,000-1,500

Chain breaking anti-oxidant in vivo

10mg (USA)

4mg (UK)

 

1 mg d-RRR a tocopherol = 1.49IU = 1.49mg synthetic d, 1-a tocopherol acetate

8 mg (USA)

3 mg (UK)

 

1 mg d-RRR a tocopherol = 1.49IU = 1.49mg synthetic d, 1-a tocopherol acetate

Vitamin K

(group)

Spinach leaves

500-600

Cabbages

350-400

Carrots

0,80-100

Broccoli

120-140

Lettuce

180-200

Pork liver

400-800

Normal blood coagulation; formation of coagulation factors (prothrombin, etc)...

70-80 mg

60-65 mg

.

.

WATER SOLUBLE VITAMINS

.

.

Vitamin C

Citrus fruits

40,000-60,000

Spinach leaves

70,000-90,000

Potatoes

10,000-30,000

Cabbages

30,000-1,000

Broccoli

100,000-120,000

Collagen formation, vascular function; wound healing; antioxidant in vivo...

60 mg (USA)

40 mg (UK)

60 mg (USA)

40 mg (UK)

Thiamine

(vit B1)

Dried yeast

2,500-10,000

Whole grains

300-500

Beef meat

500-5,000

Pork meat

300-1,000

Legumes

350-400

Egg yolk

300-500

Carbohydrate metabolism; nerve cell function; myocardial function...

1.2 mg

0.9 mg

Riboflavin

(vit B2)

Dried yeast

3,000-5,000

Cheese

300-700

Milk

150-170

Beef,pork meat

100-400

Cows liver, pork liver

1,700-3,200

Cereal germ

500-4,000

Wheat flour

100-200

Energy and protein metabolism (precursor of FMN and FAD); integrity of mucous membrane

1.6 mg

1.3 mg

Niacin

(nicotinic acid, nicotinamide)

Dried yeast

50,000-60,000

Whole grain cereals

1,500-5,000

Wheat flour

4,800-5,500

Legumes

2,300-5,000

Pork, beef meats and liver

5,000-12,000

Fish (cool, salmon, tinca)

2,000-10,000

Oxidation-reductin reactions (precursor of NAD(P)H ; Carbohydrate metabolism...

18 mg

1 mg niacin = 1 niacin equivalent (1NE) = 60 mg dietary tryptofan (this aminoacid is able to synthesise endogenous niacin)

14 mg

1 mg niacin = 1 niacin equivalent (1 NE) = 60 mg dietary trytofan (this aminoacid is able to synthesise endogenous niacin)

Pyridoxine

(vit B6 group)

Dried yeast

4,000-10,000

Cereals

300-600

Wheat flour

400-700

Liver

1,000-2,500

Beef, pork meat

300-700

Egg yolk

170-200

Vegetables

100-500

Pridoxal phosphate is involved in several reactions: transamination, decaboxylation, deamination, trytophan metabolism, porphyrin and heme biosynthesis, linoleic acid metabolism...

2.0 mg

1.6 mg

Biotin

(vit H)

Yeast

90

Vegetables

10-20

Milk

2-5

Cheese

1,5-2

Egg yolk

15-20

Cereals products

4-12

Meat (beef, pork, sheep, chicken)

3-10

Fish

0,2-3

Aminoacid and fatty acid metabolism; carboxylation and decarboxylation of oxoloacetic acid...

150-330 mg

150-330 mg

Folic acid

(vit Bc)

Cows liver, pork liver

30-150

Beef, pork meat

10-50

Egg yolk

60-100

Legumes

35-100

Fennel

90-100

Spinach, asparagus

90-120

Cheese

10-30

Cereals

15-30

Maturation of erythrocytes; synthesis of purines and pyrimidines; metabolism of some aminoacids...

200 mg

180 mg

Vitamin B12

(cobamins)

Beef, pork liver

30-60

Beef, pork kidney

10-30

Cow milk

1-4

Fish (Tuna)

4-5

Maturation of erythrocytes; DNA syntheses; neural function...

2.0 mg

2.0 mg

.

.

MINERALS

.

.

Sodium

Wide distribution in foods

Acid-base balance; blood pH; osmotic pressure; muscle contractility; nerve sodium pump; transcription...

575-3,500 mg

575-3,500 mg

Potassium

Wide distribution, mainly in milk and fruits (bananas, prunes, raisins)

Muscle activity; nerve transcription; intracellular acid-base balance...

3,100 mg

3,100 mg

Calcium

Milk, cheese, meat, fruit, fish, cereals, vegetables, legumes

Bone and tooth formation; blood coagulation; neuromuscular irritability; muscle contractility...

1,200-800 mg

1,200-800 mg

Phosphorus

Milk, cheese, meat, fish, cereals, legumes

Bone and tooth formation; acid base balance; DNA and RNA synthesis; energy production;

1,200-800 mg

1,200 800 mg

Magnesium

Green leaves, cereals, fish.

Bone and tooth formation, nerve contraction, muscle contractability, enzyme activation...

350 mg

280 mg

Iron

Wide distribution, mainly in meat, liver etc.

Hemoglobin, myoglobin, catalase, mitochondria...

10 mg (USA)

8.7 mg (UK)

10 mg (USA)

14.8 mg (UK)

Zinc

Wide distribution, mainly in vegetables

Component of enzymes, (Cu, Zu-SOD) and insulin; skin integrity, wound healing and growth...

15 mg (USA)

9.5 mg (UK)

15 mg (USA)

7.0 mg (UK)

Cobalt

Green leafy vegetables

Component of vitamin B12.

Not set

Not set

Copper

Meats, oysters, legumes, whole grain cereals

Cu, Zn-SOD; caeruloplasmin; hemopoiesis; bone formation

2-3 mg (USA)

1-2 mg (UK)

2-3 mg (USA)

1-2 mg (UK)

Selenium

Meats, fish, garlic

Component of glutathione peroxidase; thyroid function; Detoxification of carcinogens?

50-200 mg (USA)

75 ug (UK)

50-200 mg (USA)

60 ug (UK)

Chromium

Brewer's yeast

Part of glucose tolerance factor;

200 ug

200 ug

Fluorine

Mineral water, fish, egg, tea

Tooth formation;

1.5-4 ug

1.5-4 ug

Iodine

Seafood, iodine salt.

Thyroxine and triiodothyroxine formation; Energy control mechanisms...

150 ug

150 ug

.

.

OTHER IMPORTANT NUTRIENTS

.

.

Ubiquinone

(CoQ10)

Heart and liver of cow, pork, sheep etc., fish

Antioxidant (mainly in its reduced form)

Not set

Not set

Flavonoids

Most fruits and vegetables

Antioxidant in vivo?, directly cytotoxic to cancer cells? anti-angiogenetic agents?

Not set

Not set

Phitic acid

Many grains

Bind transitional metals, decrease iron absorption;

Not set

Not set

Genistein

Soybeans

Anti-angiogenetic agent;

Not set

Not set

Catchetins

(polyphenols)

Green tea, black tea, many berries

Anti-oxidant "in vivo"? directly cytotoxic to cancer cells?

Not set

Not set

Resveratrol

Red wine, grape juice

Antioxidant "in vivo"? reduce the incidence of skin tumours in mice by approximately 88%...

Not set

Not set

Allyl sulfides

Garlic, onions

Stimulation of enzymes able to detoxify carcinogens;

Not set

Not set

Isothiocyanates

Mustard, radishes

Induce protective enzymes

Not set

Not set

Fibre

Grains, vegetables

Increases speed of movement of faeces through colon; diluted carcinogenic drugs and delays their formation;

20-30g (USA)

12-14g (UK)

20-30g (USA)

12-14g (UK)

.

.

.

The UK RDA refers to total "non starch carbohydrate polymers"

.

A diet for immunodeficiency and, in particular, for diagnosed HIV seropositive (HIV+) and AIDS patients.

It is important to emphasise that it is a nonsense to believe that a single diet may be useful for all patients. In general, macro and micronutrients mentioned under "general considerations" are essential for humans, and their metabolism follows the same pathways, but the response is individual. A relationship has been shown to exist between the quality and quantity of digested nutrients and the nutritional state and the immunocompetence of an individual. There can be various "degrees" of immunodeficiency, each of which can display peculiar nutritional requirements. Therefore, we'll confine ourselves to giving dietetic advice that, in any case, can be modified during treating immunodeficiency. In our laboratory, such advice is monitored quarterly by blood analyses (plasma, lymphocytes, erythrocytes) of factors we have called "cell health indicators", i.e., albumin, free and esterified cholesterol, phospholipids and their fatty acid pattern, vitamin E, vitamin A, b-carotene, lycopene, vitamin C, uric acid, ubiquinol/ubiquinone and reduced glutathione/oxidized glutatione redox couples, total thiols, selenium, iron, copper, lipoperoxidation levels, superoxide dismutase, glutathione peroxidase, catalase, etc.6-9. These analyses, in addition to haemochrome, CD4+, and CD8+, represent the basis of our 12-year experimental observations on patients diagnosed with AIDS, pointing out that a severe oxidative stress occurs in the blood of patients diagnosed HIV positive (HIV+) in comparison with healthy age and sex matched controls, and increases significantly with the degree of immunodeficiency: AIDS > symptomatic HIV+ > asymptomatic HIV+ > controls.

The observed oxidative stress is characterized either by the depletion of:

  • lipophilic antioxidants [vitamin E (vit E), ubiquinol (CoQ10H2), ubiquinone(CoQ10), vitamin A (vit A), and b-carotene],

  • hydrophilic antioxidants [reduced glutathione (GSH), ascorbate, and urate],

  • selenium (Se),

  • phospholipids (PL) and cholesterol esters (CE), and their polyunsaturated fatty acid (PUFA) patterns,

  • or by an increase of:

  • by-products of polyunsaturated fatty acid and protein oxidation,

  • or by:

  • a critical imbalance of enzymatic antioxidants (superoxide dismutase and glutathione peroxidase).

In particular, the deficiency of ubiquinol, vitamin E, reduced glutathione, phospholipids, cholesterol, and polyunsaturated fatty acids represents an early marker of the condition. It is worth mentioning that deficiency of antioxidants produces oxidative stress. When this is severe, it is able to damage cellular macromolecules, in particular, DNA; proteins, and unsaturated lipids (Table 4), and their functions, which are maintained and mediated by critical redox systems, thus contributing to the physio-pathology of many diseases (Fig.1).

 

Table 4

Molecule

Type of damage

Molecule

Type of damage

DNA

Changes in adenine, guanine, cytosine, and thymine bases.

Breakage of DNA backbone in single or double strand breaks of the double helix.

Attack on the deoxyribose.

Unsaturated lipids

Oxidation of PUFA (lipoperoxidation) and damage to membrane proteins.

Proteins

Breakage of proteins.

Oxidation of thiol and amino residues of aminoacids .

Cross-linking of different protein molecules by aminoacid radicals

Table 4. Molecules damaged by a sustained oxidative stress and type of damage. An oxidative stress can be defined as any unbalance between antioxidant defences and generation of reactive oxygen and nitrogen species (ROS, RNS), and other reactive radicals (R). It follows that an oxidative stress can be induced in biological systems by the depletion of antioxidants and/or an overload of reactive oxidant species, so that the antioxidant pool becomes insufficient 8-11.

 

Fig.1. (view large) Possible involvement of oxidative stress in numerous diseases.

 

This does not mean that reactive oxidant species are the main cause of the above diseases. Certainly it cannot be denied that their production accompanies most, and perhaps all, human diseases, and that, in several cases, they may play a significant role in the onset of the diseases and /or contribute significantly to their progression.

The first necessary measure is to take regard of the reinstatement of those molecules, the levels of which are reduced when compared to normal, and this is possible by the opportune combination of diet and integrators.

It is enlightening that many years ago, long before the antibiotic era, there were fierce quarrels between scientists aiming to discover a drug active against Koch tubercle bacillus and scientists who, conscious that environmental factors such as poverty, deficient diet and poor housing can play an aet ological role in the incidence and spread of tubercolosis, maintained that it would be better to empower the body's defences, by reducing the influence of environmental factors. The suggestions of the latter prevailed mainly in Northern European countries. Bed rest, plentiful diet, sunlight, fresh air, adequate hygienic measures, and isolation of the patients became the regime of choice. These rational and preventive treatments led to the inversion of the spread of the disease in those countries, some decades before the discovery of streptomycin by S. A. Waksman in 1944.

What to do?

Table 3 can be considered as a useful guide for the physiological intake of micronutrients from the diet. Micronutrients does not mean nutrients of less importance as compared to macronutrients: antioxidant defences, for example, rely mainly on some vitamins and minerals from the diet. However, it is often better to utilize one or more micronutrients in the form of pills or tablets, the prerequisite being that they must be taken from natural sources and assimilated in proper amounts. An apt example is given by vitamin E (vit E). Dietary vit E occurs in a variety of forms, such as a, b, d, and g-tocopherols differing in the number of methyl groups on the chromanol ring and having a phytyl tail. The biological activities of the four homologues, as determined by a rat resorption test12, vary from 100% for a-tocopherol (d-RRR-a-tocopherol), to 57% for b-tocopherol, (d-RRR-b-tocopherol), 31% for g-tocopherol (d-RRR-g-tocopherol), to 1.4% for d-tocopherol (d-RRR-d-tocopherol). In addition to natural homologues, synthetic vit E (d, l-a-tocopherol or all-rac a-tocopherol), which is widely used as a supplement, contains eight different isomers (SSR,SSS,SRS,SRR, RSS, RRS, RRR, RSR), of which only approximately 12% is d-RRR-a-tocopherol (Fig.2). Its stereosisomers are less biologically active (21-90 %), the biological activities of the 2-S forms being lower than the 2-R forms13.

In any case, despite the different biological activities of homologues and stereoisomers of a-tocopherol, there is biodiscrimination, which allows a-tocopherol to predominate in blood and tissues. Dietary or synthetic forms of vit E are absorbed from the intestinal lumen in the presence of biliary and pancreatic secretions, which are necessary for micelle formation. It has been observed that the different forms do not compete with each other during absorption and secretion in chylomicrons. In other words they are absorbed with equal affinity, and, during chylomicron catabolism, are similarly present in all of lipoproteins, an aliquot being delivered to peripheral tissues, and the remainder to liver under the form of chylomicron remnants. In contrast to the intestine, the liver discriminates among the various forms of tocopherols. In fact the hepatic tocopherol transfer protein preferentially selects and transfers d-RRR-a-tocopherol to VLDL (very low density lipoproteins) during their assembly. Following VLDL secretion into the plasma, a-tocopherol can be distributed to other lipoproteins and tissues. Excess a-tocopherol and other forms of vit E are likely excreted in the bile.

From this wide-ranging discourse on vit E and its homologues, it is possible to assert that the best way to face the real requirements of the vitamin is to administer, by any route, suitable amounts of d-RRR-a-tocopherol or of its stable derivative d-RRR-a-tocopheryl acetate.

But, let us go on with our dietetic advice.

Proteins.

60-80 g daily from different sources such as red meats, fish, whole milk, eggs, whole cereals legumes, etc. These sources must be preferentially fresh and varied. It is important to monitor quarterly patients' plasma levels of albumin, a protein containing high levels of thiols (0.3-0.5 mM) and able to scavenge a wide range of reactive species and radicals, that can damage it. Contrary to several oxidized molecules, the damaged albumin is not dangerous for the cells: it is simply removed from circulation and replaced, so that it is considered as a very important "sacrificial antioxidant".

Carbohydrates.

RDA for carbohydrates is not well defined. It is normally asserted that carbohydrates, of which approximately 90% are polysaccarides and only 10% mono and disaccarides, must provide 55-65% total body calories. In any case, at least 180g glucose/day, whatever the metabolic origin of glucose, are indispensable to satisfy the energetic requirements of both brain (140 g/day) and erythrocytes (40 g/day). Among carbohydrates, of great importance is the role of fibers, i.e. the sum of undigestible carbohydrates, such as pentosans, pectins, cellulose, emicellulose, lignine, etc. The daily consumption of fibers should be in the order of 15-20g, and derived from foods rich in fibers such as cereals, legumes, vegetables, and fruit, more than from concentrated fibers.

Lipids.

The lipid metabolism is significantly impaired in AIDS patients: phospholipids, cholesterol esters (and therefore total cholesterol), high polyunsaturated fatty acid patterns (C20:3 n-6, C20:4 n-6, C22:6 n-3, etc.) of phospholipids and cholesterol esters are significantly reduced, while saturated fatty acid patterns (C14:0, C16:0, C18:0) of the same lipid fractions are significantly increased, as compared to healthy control values (8-9). The imbalance in fatty acid patterns of n-6 and n-3 series is probably dependent on insufficient D-6, D-5, and D-4 desaturase activities6-9, which require, for their normal physiological activities, optimal levels of vit E, ubiquinol/ubiquinone, and selenium8-9. Brenner14, in studying the factors which influence the activity of the first of these enzymes, i.e. D-6 desaturase, demonstrated that its activity is inhibited by various causes such as ageing, reactive oxidant species, lipoperoxidation, prolonged fasting, diabetes, hypoproteic diet, alcohol, stress due to excessive release of catecholamines, thyroxine, radiations, etc. This means that a normal intake of essential fatty acids (C18:2 n-6 and C18:3 n-3) may not guarantee for their functional utilization.

From a quantitative point of view, the daily lipidic intake of fatty acids (mainly in the form of triglycerides) should be in the order of 25-30% of the total calories in the diet. Saturated fatty acids should not exceed 10%, trans-monounsaturated fatty acids 2%, monounsaturated fatty acids 10%, essential fatty acids and poly-unsaturated fatty acids 6-8%, with a ratio n-6/n-3 of 6-10/1. Also extremely important is the nutritional intake of cholesterol, and phospholipids. The former is present, mainly in free form, in cheese, milk, offal (liver, heart, kidney of beef or pork), meat, fish etc, and its daily intake should not exceed 400-500 mg. It is claimed that an elevated intake of cholesterol lowers its endogenous biosynthesis, but this homeostatic mechanism is often inefficient in many diseases. As for phospholipids, that deliver to the body not only essential fatty acids, but also fundamental molecules, such as choline, serine, and inositol, their daily intake should be in the order of 4-6g. The sources of phospholipids ought to be red meats, offal, raw vegetables, legumes, etc.

Micronutrients.

A large aliquot of vitamins and minerals is supplied by fruit and vegetables, the remainder deriving from the same sources that provide macronutrients. For example, red meats and liver from several animals, in addition to proteins, cholesterol and PUFA, are very rich in bio-available iron, contrary to spinach and egg yolk, which also contain high levels of iron. Among micronutrients, antioxidants play an important role in immunodeficiency8,9,15-24. The purpose of the immune system is to destroy invading organisms and damaged cells, bringing about recovery. For this purpose it generates powerful substances such as cytokines and reactive oxygen species (ROS), the excessive or non-physiological production of which can be associated with mortality and morbidity after infections, and with inflammatory diseases. ROS enhance the biosynthesis of interleukin-1, interleukin-6, interleukin-8, TNF-a etc., in response to inflammatory stimuli, by activating nuclear transcription factor, NT-kB. These cytokines are able to stimulate ROS formation, that would contribute to the depletion of GSH and other antioxidants, which, directly and indirectly ought to protect the host against the damaging combined effects of ROS and cytokines. The nature and the extent of the antioxidant defences are influenced by their dietary intake or by the intake of their precursors. In particular, we have emphasized that the deficiency of lipophilic and hydrophilic antioxidants coupled to an imbalance of enzymatic antioxidant activities, affects the blood, and, consequently, tissues, of HIV+diagnosed patients, and increases significantly if the condition progresses6-9.

Antioxidant therapies have been proposed for patients diagnosed HIV+ or with AIDS, and several clinical trials have been carried out with GSH pro-drugs (N-acetyl cysteine, glutathione esters, and oxothiazolidine-4-carboxylate) or vit C or vit E or ubiquinone or lipoic acid, etc. but, to our knowledge, without evident clinical benefits25-33. As a matter of fact, the proposed antioxidant therapies have been nothing but antioxidant mono-therapies. They follow the dictates of literature, where it is generally reported that enzymatic and non-enzymatic antioxidants form a dynamic integral pool, in which the deficiency of one or more constituents can be compensated by the increased amounts of one or more molecules of the same pool, in order to maintain a homeostatic protective system against oxidative damage towards susceptible cell components. This may happen with a mild degree of deficiency, but not with the severe depletions and imbalances that may be observed in individuals diagnosed HIV+. It is a nonsense to 'fight AIDS' on the basis of results from experimental and highly questionable in vitro measurements, showing that an antioxidant is capable of inhibiting TNF-a synthesis or NF-kB activation and, consequently, HIV replication. Granted, for the sake of argument, that the administration of GSH pro-drugs leads to its increased intracellular levels, how is it possible to believe that such increase may re-balance the significant deficiencies of CoQ10H2, CoQ10, vit E, vit A, vit C, PL, CE, PUFA, the imbalance of enzymatic antioxidants, etc.? The same is true same for vit E, or CoQ10, or vit C, or lipoic acid, etc.

In our opinion, in order to re-balance the cell redox status, it is necessary to administer the deficient antioxidants by appropriate vegetables and fruit plus external supplements. Appropriate vegetables and fruit, i.e. oranges, kiwi, carrots, red grapes, apples, tomatoes, broccoli, cabbages etc. have to supply vit C, b-carotene (the precursor of vit A), lycopene, flavonoids - all antioxidants that, when administered in the form of tablets or capsules, i.e. without their natural entourage to buffer and protect them, may show pro-oxidant activities. As external supplements we intend d-RRR-a-tocopherol, ubiquinone, precursors of GSH and glutathione peroxidase, vitamin PP, the uptake of which from foods can be insufficient or not easy. In this connection, in our Cell Aging Center we have patented and produced a multinutrient preparation -IMMUGEN - recommended for the prevention and treatment of oxidative stress in all its manifestations. Each gelatine capsule (or tablet) contains:

ubiquinone, 12.5 mg; RRR-a- tocopheryl acetate, 12.5 mg; l-methionine, 50.0 mg; selenium (as selenium aspartate), 12.5 mg; soybean phospholipid complex, 147.0 mg. The phospholipid complex contains: phosphatidyl choline, 23%; phosphatidyl ethanolamine, 20%; phospatidyl inositol, 14%; phosphatidic acid, 8%; other phospholipids, 8%; glicolipids, 15%; carbohydrates, 8%; neutral lipids, 3%.

Mode of action of IMMUGEN

Reduced and oxidized ubiquinones (CoQ10H2 and CoQ10 - UBI -) are ubiquitous and essential for life, meaning they exist in all body cells and support cellular energy production by helping generate adenosine triphosphate (ATP). Once UBI body levels become more than 25-30% deficient, many diseases may begin, including immunodeficiency, cancer, cardiovascular diseases, etc.

It is well known that CoQ10, in addition to its function as an electron and proton carrier in mitochondria, acts as a powerful antioxidant in its reduced form ubiquinol (CoQ10H2), by preventing both the initiation and the propagation steps of lipoperoxidation in biological membranes34-35. Furthermore, it is able to sustain efficiently the chain breaking antioxidant capacity of Vit E, by regenerating it from a-tocopheryl radical36, which otherwise would need the cooperation of hydrophilic antioxidants such as Vit C and/or GSH. Therefore, as CoQ10H2 is essential to maintain Vit E status and function, decrease of CoQ10H2 in turn contributes to further exacerbate the depletion of Vit E. It is worth mentioning that CoQ10H2 is the only known lipophilic antioxidant that mammalian cells can sinthesize de novo and for which there are enzymic NAD(P)H dependent mechanisms able to (re)generate it from CoQ1037-38. A derangement of these reductive mechanisms, due to an over production of pro-oxidant reactive species, coupled to a reduced CoQ10 biosynthesis, represents an important fingerprint of immunodeficiency and its progression.

 

RRR-a-tocopheryl acetate is a stable form of natural vit E, a chain breaking antioxidant that works in sinergy with CoQ10/ CoQ10H2 to prevent oxidative damage to lipid membranes and plasma phospholipids. In its antioxidant role, vit E becomes oxidized; thereafter it can be regenerated particularly by CoQ10H2. A recent study39 suggests that high serum levels of vit E in individuals diagnmosed HIV+ is associated with a decrease in risk of progression to AIDS and mortality, while low serum concentrations have been correlated with higher degree of lipoperoxidation40, decreased plasma PUFA22, and increased p24 antigenemia22. Vit E supplementation during murine AIDS, which may be functionally similar to human AIDS modulates cytokine release and helps to ameliorate the disorders during the disease, suggesting vit E's usefulness in the treatment of AIDS in humans40. Dietary oxidative stress due to either vit E or selenium deficiency allows a normally benign virus (amyocarditic coxackievirus B3) to convert to virulence and cause heart damage in mice. The conversion to virulence is due, according to Beck and Levander41, to a nucleotide sequence change in the genome of the benign virus, which then resembles the nucleotide sequence of virulent strains.

 

L-methionine, an essential amino acid, supplies both the methyl group essential for the biosynthesis of phospatidyil choline, the main membrane phospholipid, and (?) methyl transferase activity, and the sulphur atom necessary for the biosynthesis of reduced glutathione (GSH), which is the reducing molecule of glutathione peroxidase, an enzyme which also requires selenium (Se) for its antioxidant activity. Apart from polyamines, which are strong chelators of transitional metals, among the final catabolites of methionine other sulphurated molecules must also be considered, such as taurine and sulphates, which, together with GSH, are extremely valid endogenous detoxifying agents. A recent study has shown that methionine, threonine, valine and lysine are rate limiting for whole body protein synthesis in AIDS patients, suggesting that there are selective aminoacids requirements in these individuals42.

Selenoproteins discovered in mammalian cells may account for the important role of Se not only in the body's antioxidant defence, but also in thyroid hormone function, cellular immunity, formation of sperm, and functioning of the prostate gland. According to Cowgil a pattern does exist between the geographical distribution of Se and AIDS mortality, such that an inverse relationship persists between Se amount in the soil of an area and AIDS mortality in the same area43.

Phospolipids, together with vit E, CoQ10 and CoQ10H2 are essential constituents of cellular membranes, from which the immune response draws its origin.

 

Suggested treatment to prevent immunodeficiency progression in diagnosed HIV+ patients.

We recommend 3-4 capsules daily of IMMUGEN (or similar micronutrients) plus 50 mg of vitamin PP (the precursor of NAD(P)H) during main meals as external supplements, plus a varied diet in the home with a high biological value (Table 5). In addition we suggest food to avoid or, at least, to reduce drastically. It is evident that other supplements may be absolutely necessary, for example folate and/or vitamin B12 in the case of anemia, or vitamin B6 in psychological distress, etc.

Might the same combined treatment produce beneficial effects, for example by reducing the risks of opportunistic diseases, in diagnosed symptomatic HIV+ and AIDS patients (CD4+: < 200; 180-10 cells mm3)? The answer is undoubtedly positive in those individuals showing no serious problems of malabsorption and whose blood levels of "health cell indicators", though significantly reduced before treatment as compared to healthy controls, increase significantly after 1-2 months of treatment. When, on the contrary, oxidative stress combined with medication and recreational drug abuses, and emotional distress, have irreversibly undermined the body, leading to a downward spiral of malabsorption, weight loss, wasting, diarrhea, anorexia, body image disturbance etc., it is clear that our oral combined treatment becomes insufficient: the AIDS establishment, mercenary scientific journals and mass media can, with impunity, toast death.

 

Table 5. Dietetic advice for diagnosed HIV+ (and AIDS) patients.

BREAKFAST

 

Whole milk (200-300ml) or yoghurts (100-150ml); cereals (25-50g), porridge or wholemeal biscuits; soy bean lecithin (1.2 spoons); jam or honey (as sweetener); coffee or tea (optional)

 

MIDMORNING OR MIDAFTERNOON

 

Tea, biscuits, and/or fruit juice.

 

LUNCH OR DINNER

 

Pasta or rice, or soup

100-150g, daily

Bread

200-300g of whole bread or enriched bread daily

Red meat

150-200g of rare/medium steaks from beef or pork (visible fat must be removed), 2-3 times a week.

Offal

100-150g of liver or heart or kidney from beef or pork, 1-2 times a week.

White meat

200-250g of chicken or lamb or rabbit etc., 1-2 times a week

Fish

150-250g of fresh fish (cod or salmon or herring or trout. etc.,) 2 times a week.

Egg

3-4 whole eggs a week

Vegetables

150-200g daily of fresh vegetables (broccoli, lettuce, spinach, Brussels sprouts, potatoes etc.)

Legumes

100-150g of legumes (different types of beans,lentils etc.), 1-2 times a week.

Fruit

300-400g daily of fresh seasonal fruit (oranges, kiwi, black grapes, apricots,prunes, banana, etc.). Also dry fruits (nuts, almonds, raisins, dates, etc) are indicated for their high content in polyunsaturated fatty acids and potassium).

Cheese

40-50g of parmesan cheese or non-excessively fat cheese, 3-4 times a week.

Oil

Olive oil (10-30g) for prolonged cooking, non-peroxidized corn or soybean or sunflower oils for raw sauces.

In boiling vegetables, prolonged heating at high temperatures should be avoided, and the amount of water should be kept to a minimum and already hot, otherwise much of ascorbic acids and other vitamins and minerals will be destroyed or dissolved away.

Don't worry about red meats and offal: it is true they contain remarkable amounts of cholesterol (mainly free cholesterol) and iron, but cholesterol excess is the last thing an immunodeficient person need fear, because of its low plasma concentrations. As for iron and its role in pro-oxidative stress, we have ascertained that the plasma levels of ferritin and NTBI in people diagnosed HIV+ and AIDS patients are in the normal ranges (91 ± 14 ng/mL of plasma for ferritin, and 0 µg/dL for NTBI).

 

Table 6. Foods to avoid or reduce drastically.

Animal fat and dairy products such as butter, shortening, ordinary margarine, coconut oil, lard, cream, and food containing these ingredients, i.e., salami, sausages, wurstels, cakes, pastries, biscuits etc;

fried foods, in particular from fast foods or fish and chips shops;

strong spices;

highly seasoned and tinned food;

alcoholic beverages.

Abstract

Following many years of research in vivo on HIV+ and AIDS patients and on the basis of their effective blood deficiencies of micronutrients, ascertained by unequivocal analytical techniques, the authors' dietary recommendations are:

a varied diet in the home with a high biological value, which ensures an excellent intake of proteins, polyunsaturated fatty acids under the form of phospholipids and triglycerides, cholesterol, vitamins and minerals;

a cocktail of natural antioxidants and their precursors such as d-RRR-a-tocopherol, ubiquinone, selenium, precursors of GSH , to assume, as supplements, during meals.

These combined treatments, allowing a re-balancing of cell redox status, membrane lipid constituents, and possible caloric and protein deficiencies, may have a beneficial therapeutic value to prevent the progression of immunodeficiency. This is possible mainly in less compromised patients, in whom the oxidative damage to cells has not yet reached a critical threshold of no return, and can still be successfully fought. Certainly it is much healthier than the extremely toxic DNA chain terminators, anti-proteases, antibiotics, antifungal agents and similar dangerous molecules, fideistically prescribed daily by the members of the orthodox AIDS establishment, and capable of inducing a physical decline even in healthy individuals.

References

  1. Recommended Dietary Allowances, IX edition by the National Academy of Sciences, National Academy Press, Washington, DC, 1980.

  2. FAO/WHO. Handbook on human nutritional requirements. FAO, Nutritional Studies n. 28, WHO Monograph series, n. 61, 1974.

  3. Recommended Nutrient Intakes for Canadians. Minister of National Health and Welfare, 1983.

  4. Apports Nutritionelles conseillés pour la population franVaise. CNRS-CNERNA. Technique et documentation Lovoisier, 1982.

  5. Tabelle di composizione degli alimenti. Istituto Nazionale della Nutrizione, a cura di F. Carnovale - L. Marletta, 1997.

  6. Passi S., Morrone A., Picardo M., De Luca C. and Ippolito F.. Blood levels of vitamin E. polynsatured fatty acids of phospholipids, lipoperoxides and glutathione peroxidase in patients affected with seborrheic dermatitis. J. Dermatol. Sci. 2:171-178, 1991.

  7. Passi S., Picardo M., Morrone A., De Luca C., Ippolito F, Rossi L. and Rotilio G. Study on plasma polyunsaturated fatty acid and vitamin E, and on erythrocyte glutathione peroxidase in high risk HIV infection categories and AIDS patients. Clin. Chem. Enzym. Commun. 5:169-177, 1993.

  8. Passi S., Ippolito F., AIDS: nuova frontiera. pp. 1-200, Lombardo Ed. Roma, 1995.

  9. Passi S. Progressive increase of oxidative stress in advancing human immunodeficiency. Continuum, vol 5 (no 4): 20-26, 1998.

10. Halliwell B., Gutteridge J.M.C. In "Free radicals in biology and medicine", 2nd edition. Clarendon Press, Oxford, 1989, and the references cited therein.

11. Gutteridge J.M.C. Halliwell B. Antioxidant in nutrition, health, and disease. Oxford University Press. Oxford-New York-Tokio, 1994.

12. Weimann B. J., Weiser H. Functions of vitamin E in reproduction and in prostacyclin and immunoglobulin synthesis in rats. Am. J. Clin Nutr., 53: 1056 S&endash;1060 S, 1991.

13. Weiser H., Vecchi M., Schlachter M. Stereoisomers of alpha-tocopheryl acetate. IV. USP units and alpha-tocopherol equivalents of all- rac-, 2-ambo- and RRR-alpha-tocopherol evaluated by simultaneous determination of resorption-gestation, myopathy and liver storage capacity in rats. Int. J. Vit. Nutr. Res., 56:45-56, 1986.

14. Brenner RR. Nutritional and hormonal factors influencing desaturation of essential fatty acids. Prog. Lipid Res. 20:41-47, 1982.

15. Halliwell B., Cross C. Reactive oxygen species, antioxidants, and acquired immunodeficiency syndrome. Arch. Intern. Med. 151:29-31, 1991.

16. Eck H.P., Grumder H., Hartmann M.L., et al. Low concentration of acid soluble thiol (cystein) in the blood plasma of HIV-1 infected patients. Biol. Chem. Hoppe Seyler 370:101-8, 1989.

17. Staal F.J.T., Roederer M., Israelski D.M., et al. Intracellular glutathione levels in T-cell subsets decrease in HIV infected individuals. AIDS Res. Human Retrovirus 8:305-11, 1992.

18. Javier J.J., Fordyce-Baun M.K., Beach R.S., et al. Antioxidant micronutrients and immune function in HIV-1 infection. FASEB Proc. 4A:940-945, 1990.

19. Folkers K., Langajoen P., Nara Y., et al. Biomedical deficiencies of coenzyme Q10 in HIV infection and exploratory treatment. Biochem. Biophys. Res. Commun. 153:888-96, 1988.

20. Buhl R., Holroyd K.J., Cantin A.M., et al. Systemic glutathione-deficiency in symptom-free seropositive individuals. Lancet 2:1294-1298, 1989.

21. Dworkin B.M. Selenium deficiency in HIV infection and the acquired immune deficiency syndrome (AIDS). Chem. Biol. Interact. 91:181-186,1994.

22. Semba R.D., Graham N.M.H., Caiaffa W.T. Increased mortality associated with vitamin A deficiency during human immunodeficiency virus type 1 infection. Arch. Intern. Med. 153:2149-2154, 1993.

23. Constants J., Peuchant E., Pellegrin J.L. et al. Fatty acids and plasma antioxidants in HIV-positive patients: correlation with nutritional and immunological status. Clin Biochem 28:421-6, 1995.

24. Coodley G.O., Nelson H.D., Loveless M.O., Folk C. Beta carotene in HIV infection. AIDS 6:272-276, 1993.

25. Mihm S., Ennen J., Pessara U., et al. Inhibition of HIV-1 replication and NF-kB activity by cysteine and cysteine derivatives. AIDS 5:497-503, 1991.

26. Kalebic T., Kinter A., Poli G., et al. Suppression of human immunodeficiency virus expression in chronically infected monocytic cells by glutathione, glutathione ester, and N-acetylcysteine. Proc Natl Acad Sci USA 88:986-990, 1991.

27. Delmas-Beauvieux M.C., Peuchant E., Couchouron A., et al. The enzymatic antioxidant system in blood and glutathione status in human immunodeficiency virus (HIV)-infected patients: effects of supplementation with selenium or b-carotene. Am. J. Clin. Nutr. 64:101-107,1996.

28. Olivier R., Dragic T., Lopez O. et al. An antioxidant prevents apoptosis and early cell death in lymphocytes from HIV-infected individuals. International Conference on AIDS 1: A 65, 1992.

29. Harakeh S., Jariwalla R.J. Comparative study of the anti HIV activities of ascorbate and thiol-containing reducing agents in chronically HIV-infected cells. Am. J. Clin. Nutr. 54:1231S-1235S, 1991.

30. Suzuki Y.J., Aggarwal B.B., Packer L. Lipoic acid is a potent inhibitor of NF-kB activation in human T cells. Biochem. Biophys. Res. Commun. 189:1709-1715, 1992.

31. Gogu S.R., Beckman B.S., Rangan S.R.S. et al. Increased therapeutic efficacy of zidovudine in combination with vitamin E. Biochem. Biophys. Res. Commun. 165:401-407, 1989.

32. Makonkawkeyoon S., Limson-Pobre R.N., Moreira A.L., et al. Thalidomide inhibits the replication of human immunodeficiency virus type 1. Proc. Natl. Acad. Sci. USA, 90(13):5974-5978, 1993.

33. Hersh E.M., Brewton G., Abrams D. et al. Dithiocarb sodium (diethyldithiocarbamate) therapy in patients with symptomatic HIV infection and AIDS. JAMA 265: 538-1544, 1991.

34. Frei, B., Kim M.C., Ames B.N. Ubiquinol-10 is an effective lipid-soluble antioxidant at physiological concentrations. Proc. Natl. Acad. Sci. USA., 87:4878-48831990

35. Mohr, D., Bowry V.W., Stocker R. Dietary supplementation with coenzyme Q10 results in increased levels of ubiquinol-10 within circulating lipoproteins and increased resistance of human low-density lipoprotein to the initiation of lipid peroxidation. Biochim. Biophys. Acta., 1126: 247-254,1992.

36. Ernster, L., Forsmark P., and Nordenbrand K. The mode of action of lipid-soluble antioxidants in biological membranes: relationship between the effects of ubiquinol and vitamin E as inhibitors of lipid peroxidation in submitochondrial particles. BioFactors., 3: 241-248,1992.

37. Cadenas, E., Hochstein P., Ernster L. Pro- and antioxidant functions of quinones and quinone reductases in mammalian cells. Adv. Enzymol., 65:97-146,1992.

38. Crane, F.L., Sun I.L., Clark M.G. et al. Transplasma membrane redox system in growth and development. Biochim. Biophys. Acta., 811:233-264, 1985.

39. Tang M.A., Graham N.M.H., Semba R., Saah A.J. Association between vitamin A and E levels and HIV-1 disease progression. AIDS 11:613-620,1997.

40. Wang Y., Watson R.R. Vit E supplementation at various levels alters cytokine production by thymocytes during retrovirus infection causing murine AIDs. Thymus 22(3):153-165, 1994.

41. Beck M. A., Levantès O. A. Dietary oxidative stress and the potentiation of viral infection. Am. Rev. Nutr., 18:93-116, 1998.

42. Laurichesse A., Tauveron I., Gourdon F., et al. Threonine and methionine are limiting amino acids for protein synthesis in patients with AIDS. J. Nutrition, 12(8):1342-8, 1998.

43. Congil U. M. The distribution of selenium and mortality owing to acquired immunodeficiency syndrome in the continental United States. Biol. Trace Elem. Res. 56 (1):43-61, 1997.

44. N. Y. Times, Aug. 20, 1994.

Â