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Nutrition has always been a subject of great interest to athletes. In recent years use of exercise has, however, expanded from competitive sports to prevention/management of chronic diseases and maintenance of optimal health. Exercise is recommended in the prevention/management of noninsulin-dependent diabetes, hypertension, coronary heart disease, osteoporosis, obesity, mental health, colon cancer, stroke and back injury. Similarly, there is evidence that certain nutrients (e.g., vitamins C and E, beta-carotene and calcium) may reduce the risk of certain cancers, coronary heart disease, osteoporosis, hypertension and cataract. Thus, there seems to be concordance between the health benefits of exercise and certain nutrients. However, several human and animal studies suggest that strenuous exercise may promote free radical production, leading to lipid peroxidation and tissue damage. On the other hand, there is evidence that vitamins C and E and beta-carotene may protect against such damage. Thus, concordance between the health benefits of exercise and nutrition and a compensatory role of antioxidant nutrients against the potentially harmful effects of exercise suggests that nutrition and exercise should form important components of any regimen for prevention of chronic diseases and/or promotion of optimal health.
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PMID:A current perspective on nutrition and exercise. 154 45

Advancing age is associated with profound changes in body composition, including increased fat mass, decreased fat-free mass (particularly muscle), decreased total body water and decreased bone density. Along with these changes in body compositions, and perhaps as a direct result of them, elderly people have lower energy needs, reduced strength and functional capacity and a greatly increased risk for such diseases as noninsulin-dependent diabetes mellitus and osteoporosis. However, the capacity to increase muscle mass through high resistance exercise is preserved even in the oldest subject. Even up to the age of 96 y, men and women can respond to resistance training with a substantial (greater than 200%) increase in strength and muscle size. This review describes the metabolic consequences of strength training in young and old, with particular attention to the eccentric component of this exercise. Eccentric muscle contractions cause muscle damage and delayed-onset muscle soreness. It is our hypothesis that muscle damage is the primary stimulus for muscle hypertrophy, by stimulating an acute phase response that ultimately leads to increased rates of muscle proteolysis and repair.
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PMID:Exercise, nutrition and aging. 154 50

Routine renal tubular investigations in 8 osteoporotic men, in whom phosphorus/calcium balance studies were normal or almost normal revealed moderate phosphorus (PD) or bicarbonate (BD) diabetes possibly responsible for their decalcification. Osteoporosis affected the spine and lower limbs, resulting in clinical pictures of frequently recurrent spontaneous algodystrophy. Histomorphometric studies revealed an increase in surface areas of resorption, the diagnosis of PD being based upon the finding at several successive investigations, in the absence of any drug treatment, of a phosphorus clearance of greater than 20 ml/min and/or a phosphorus reabsorption level of less than 80%. Arterial HC03 levels of greater than 21 mEg/l and a fractional bicarbonate excretion (FBE) of greater than 15% enabled the diagnosis of bicarbonate diabetes (proximal tubular acidosis). These cases of PD and BD appeared to be secondary to proximal tubulopathies for which no known etiology was found.
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PMID:[Male osteoporosis, an unrecognised etiology: moderate idiopathic proximal tubulopathy (MIPT)]. 157 43

A transient physiologic period similar to that in women leads from full sexuality to senium in the life of men, too. This phase may involve the complex of male climacteric symptoms. The diminished testosterone secretion of the testes as endocrine "primum movens", together with an increased level of the carrier protein (SHBG), results in a reduced androgen supply of the organism, as reflected in a low free andorgenic index. The diagnosis of male climacteric is made on the basis of an enhanced serum LH level. With regard to the differential diagnosis, atherosclerosis, diabetes mellitus, chronic alcoholic liver damage, malignant tumors and prostatic complaints are particularly to be considered. The hormonal treatment consists of low-dose testosterone medication; for the prevention of osteoporosis, however, testosterone preparations may be replaced by anabolic steroids. As for women, the concomitant vegetative phenomena of the climacteric syndrome should be alleviated symptomatically.
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PMID:[The male climacteric from the practical viewpoint]. 161 75

We experienced 41 cases of Cushing's syndrome (12 males and 29 females, 15 years old - 65 years old) during the last 20 years. These included 20 patients with unilateral adrenal adenoma (Cushing's syndrome), 19 patients with bilateral adrenal hyperplasia (Cushing's disease), one patient with adrenal carcinoma and one patient with primary adrenocortical nodular dysplasia (PAND). Moreover, these cases included some special ones, i.e. 5 cases with destructive thyroiditis after treatment, 2 cases with aggravation of arthritis after treatment, a case of Carney's complex with PAND, one case with paradoxical response to dexamethasone, and one case combined with empty sella syndrome. The most specific clinical signs were moon face (95% occurrence), hypertension (95%) and subcutaneous bruising (80%). Other significant signs were eye edema (66%), buffalo hump (68%), subcutaneous purpura (63%) and osteoporosis (49%). Skin striae was not a common sign in our cases (41%). Renal stone was observed in only 20% of our patients but was a significant sign in this syndrome. There was no difference in the occurrence of each clinical sign between Cushing's syndrome and Cushing's disease. The elevation of white blood cell count (WBC) and serum sodium, a decrease of serum potassium, and a decrease of reabsorption of phosphate (%TRP) were observed. Thyroid-stimulating hormone (TSH) and human growth hormone (HGH) were suppressed in patients with Cushing's syndrome and patients with Cushing's disease. These results were consistent with those of previous reports. However, luteinizing hormone (LH), follicle-stimulating hormone (FSH) and prolactin (PRL) were high in those patients with Cushing's syndrome and those with Cushing's disease. Oral glucose tolerance test was carried out in 34 patients before and after treatment. Thirty-one percent of those had diabetes mellitus and 26% had impaired glucose tolerance (IGT). The response of IRI in this test was high in patients with Cushing's syndrome and patients with Cushing's disease, and decreased 4 weeks after treatment in those with Cushing's syndrome but remained high in those with Cushing's disease. Plasma ACTH level and urinary 17-OHCS excretion were significantly higher in Cushing's disease than in Cushing's syndrome. During an 8mg-high-dose dexamethasone suppression test, urinary 17-OHCS excretion in 13 of 14 patients with Cushing's disease (93%) was suppressed by more than 50% of baseline on the second day of testing. However, all of 18 patients with Cushing's syndrome, who had an 8mg-dexamethasone suppression test, failed to suppress urinary 17-OHCS by 50% of baseline.(ABSTRACT TRUNCATED AT 400 WORDS)
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PMID:[Forty-one cases of Cushing's syndrome: a comparison between Cushing's syndrome (adrenal adenoma) and Cushing's disease (adrenal hyperplasia)]. 163 31

The clinical features of senile hypothyroidism and hyperthyroidism differ from the general characteristics of these conditions. This may be explained primarily by the changed response of peripheral tissues to thyroid hormones. Because of the atypical clinical symptoms the recognition of these conditions meets difficulties and, in general, occurs late. Therapy raises further special questions considering primarily cardiac complications and other accompanying diseases (for instance arteriosclerosis, osteoporosis, diabetes mellitus.). The authors analyse data of 171 hypothyroid and 219 hyperthyroid patients as a function of age, primary disease, and the most often occurring impulse generation, impulse conduction disorders.
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PMID:Atypical clinical features of hypo- and hyperthyroidism in elderly age. 172 33

Werner's syndrome is a rare, autosomal recessive inherited disorder with a distinctive clinical picture. The characteristic physiognomy, shortness of stature with thin extremities, and large trophic ulcers are the key signs for the diagnosis. Premature greying of the hair and baldness, juvenile cataracts, a tendency to diabetes mellitus, hypogonadism, calcifications of the blood vessels, osteoporosis, metastatic calcifications of the soft tissue and an elevated incidence of neoplasms are further important features. We describe two patients with this disorder.
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PMID:[Werner syndrome with torpid trophic ulcera cruris]. 176 37

Diabetes and osteoporosis are linked. The question remains, however, as to whether insulin has any direct effect on bone formation. To test this hypothesis we have measured, as a marker of osteoblast activity, alkaline phosphatase (ALP) released by rat limb intact bones incubated in the presence and in the absence of physiological concentration of insulin. The results indicate that insulin significantly (p less than 0.012) increases ALP by a mean value of 48% (from 5.4% to 215%) over matched controls. We conclude that insulin has a direct stimulatory effect on osteoblast activity, and that in the absence of this effect, as in diabetes, bone loss might occur.
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PMID:[Effect of insulin on the activity of bone alkaline phosphatase in culture]. 181 19

Clinical and experimental evidence suggests that shock, arthritis, osteoporosis, colitis, leukemia, diabetes, wasting and atherosclerosis are mediated, in part, by interleukin 1 (IL-1). Inhibition of this cytokine has been a strategy for studying disease and for new drug development. A naturally-occurring IL-1 inhibitor (IL-1 receptor antagonist, IL-1ra) that blocks binding of IL-1 to its receptors has been cloned and produced in recombinant organisms. IL-1ra reduces the severity of sepsis, colitis, arthritis and diabetes in animals and is presently being tested in humans with arthritis, shock and myelogenous leukemia.
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PMID:Blocking IL-1: interleukin 1 receptor antagonist in vivo and in vitro. 183 80

Participants in a primary prevention trial using tamoxifen to prevent breast cancer should comprise a sample of (a) age-eligible women from the "general population," (b) higher risk sisters of breast cancer patients, (c) women participating in mammography screening programs, or (d) patients of (or other users of) primary care physicians' offices. The recruitment should consider the risk of breast cancer among eligible women, likelihood of adherence to protocol, and unbiased and accurate measurement of endpoints. The Risks for coronary heart disease, hypertension, diabetes, osteoporosis, and other cancers, especially uterine cancer, must also be evaluated. Recruitment is feasible and should not be the limiting factor in the decision to undertake a primary prevention trial.
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PMID:Recruitment strategies for a possible tamoxifen trial. 190 Nov 68


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