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Previous experience has shown that a non-invasive (indirect) technique using an oscillometric monitor in conjunction with a tail cuff makes routine clinical blood pressure measurement practicable in dogs. The relationship between indirect and direct readings has been evaluated in both anaesthetised and conscious dogs (Bodey and others 1994, 1996). In this study, more than 2000 pressure measurements were taken from 1903 dogs. It was found that systolic is the most variable pressure parameter and that it depends on age, breed, sex, temperament, disease state, exercise regime and, to a minor extent, diet. Diet was not a significant determinant of diastolic and mean arterial pressure. Age and breed were the major predictors for all parameters. Heart rate was primarily affected by the temperament of the animal, though other factors also play a part in prediction. The distribution of systolic, diastolic, mean arterial pressure and heart rate across the dog population approximates to a log normal distribution. On the basis of these results it is possible to describe normal ranges for canine blood pressure; definition of hypertension, though, demands attention to age and breed normal values. The existence of statistically defined hypertension in an individual or breed does not imply adverse effects justifying therapy. Among the secondary causes of hypertension, such as diabetes, obesity and hyperadrenocorticism, hepatic disease was a new addition also undocumented in humans. The hypothesis that dogs, though classic model animals for hypertension, are resistant to its development found support from the modest increase in mean pressure values observed among dogs with renal disease, notably those with substantial reduction of glomerular filtration rate. The existence of breeds such as deerhounds with average pressures in the borderline range for hypertension in humans (and many individuals, therefore, well above) suggests that dogs may also be resistant to some of the adverse effects of high blood pressure.
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PMID:Epidemiological study of blood pressure in domestic dogs. 868 54

Renal blood flow decreased depending on the increase in exercise intensity. The kidneys may have roles to conserve the electrolytes and body fluid, and maintenance of acid-base balance during and after severe exercise. Increases in plasma hormones involved in the regulation of electrolyte-water balance, and decreases in urine flow, Na, Cl and K excretions into urine were observed following moderate exercise under a warm environment. Inhibition of electrolytes and water excretion into urine following exercise in water was less than that following exercise on land. Exercise in water is good for patients with hypertension, obesity and a mild renal disease who have tendency to conserve sodium and/or water. Increase in urinary albumin excretion, glomerular-type proteinuria was observed after moderate exercise (50 approximately 75%HRmax) in the obese individuals who had higher levels of hematocrit, serum concentrations of triglyceride, total cholesterol, LDL-cho, apoprotein B, CIII, and fasting insulin. The findings suggest that moderate exercise causes a latent abnormality of renal glomerular basement membrane in the obese individuals who had an early disturbance of glucose-fatty metabolism.
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PMID:[Sports and measurement of components in urine--responses of renal blood flow, electrolytes and hormones and of excretion of proteins into urine to exercise]. 874 92

We report a 3 year survey concerning diabetes associated with hypertension in 260 diabetic patients at Ouagadougou. This association has been found in 29% of the cases. The patients were male subjects for 57% of them and seventy one more 50 years old. Other vascular risk factors have been observed: obesity (53%), smoking (15%), hyperuricemia (23%). Hypercholesterolemia and hypertriglyceridemia were observed respectively in 1% and 1.3% of the cases. Many complications arised during the survey: retinopathy in 51% of the patients, nephropathy for 35% and 12% with renal failure, macroangiopathy in 55% of the patients. The treatment was based on diuretics and calcic inhibitors. The results on the control of blood pressure were excellent but the high cost of this management is an important restrictive factor.
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PMID:[Arterial hypertension and diabetes in Ouagadougou (Burkina Faso)]. 876 55

We developed an animal model for non-insulin-dependent diabetes mellitus, a genetically obese rat strain, Wistar fatty. These rats show obesity-related features such as hyperinsulinemia and hyperlipemia, and only males develop diabetic features including hyperglycemia, glucoseuria and polyuria as they age. Histopathological study demonstrated a deposition of PAS-positive granules in the epithelial cells and a diffuse thickening of the mesangial area and moderate changes of the renal tubules. We found that ICAM-1 is expressed on the glomeruli of male Wistar fatty rats and the expression is associated with the development of nephropathy; it is weak at 5 weeks, becomes markedly strong at 15 weeks and progresses further at 29 weeks of age. We tried in vivo administration of monoclonal antibody, anti-ICAM-1 alone or together with anti-LFA-1 into male Wistar fatty rats during the period from 5 weeks to 17 weeks of age. The treatment, however, could not prevent the development of nephropathy. ICAM-1 expressed on the glomeruli of Wistar fatty rats seems not to play a key role in development of the nephropathy by mediating leukocyte infiltration. It will be a useful marker of the development of the disease.
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PMID:Expression of ICAM-1 on glomeruli is associated with progression of diabetic nephropathy in a genetically obese diabetic rat, Wistar fatty. 880 76

The aim of this cross-sectional study was to establish the prevalence of renal involvement and to identify associations with its most important possible risk factors in a group of patients with Type II diabetes mellitus, representative of the population living in Catalonia. One thousand two hundred and three patients (47% males, mean age: 61 +/- 6 years, diabetes duration 9 +/- 6 years) were studied. Overnight urine samples were collected to determine urinary albumin excretion (UAE). If UAE was > 15 micrograms/min, a new 24-h urine collection for UAE measurement to establish the existence of microalbuminuria (20-200 micrograms/min) or macroalbuminuria (> 200 micrograms/min) was obtained. Clinic and metabolic evaluations were also performed. The prevalence (%) of microalbuminuria, macroalbuminuria and hypertension were, respectively, 23. 1, 5.4 and 42. In comparison with normoalbuminurics, patients with microalbuminuria were predominately male (P < 0.03), with a significantly higher systolic (P < 0.001) and diastolic (P < 0.001) blood pressure and body mass index (P < 0.001). The prevalence of smokers (former + current) was higher in patients with microalbuminuria (43 vs 32%, P < 0.025). Moreover, patients with nephropathy had more prevalence of retinopathy (P < 0.001), neuropathy (P < 0.001), peripheral angiopathy (P < 0.001) and coronary disease (P < 0.001). The prevalence of microalbuminuria in Type II diabetes in Catalonia is similar to that observed in other european countries. The existence of microalbuminuria is associated with several diabetic complications, as well as tobacco consumption and obesity.
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PMID:Epidemiology of renal involvement in type II diabetics (NIDDM) in Catalonia. The Catalan Diabetic Nephropathy Study Group. 885 4

Patients with diabetes mellitus have a higher rate of mortality than the general population. This higher mortality may be attributed mainly to cardiovascular disease. A high prevalence of dyslipidemia in diabetics can be one of the reasons for this. The most commonly recognized lipid abnormality in non-insulin-dependent diabetics (NIDDM) is hypertriglyceridemia, which is known to be an independent risk factor for coronary heart disease in diabetics. Hypertriglyceridemia can be produced by two mechanisms, increased synthesis of very-low-density lipoprotein (VLDL) triglyceride and removal defect of plasma triglyceride. It has been a matter of debate whether insulin always stimulates hepatic VLDL secretion but it is generally accepted that insulin deficiency results in an impairment of plasma triglyceride clearance. Considerable attention has recently been focused on the atherogenecity of postprandial hyperlipidemia, remnant lipoproteins, small, dense LDL, lipoprotein (a) [Lp(a)] and isolated hypo-alphalipoproteinemia in NIDDM subjects. Several reports suggested that these atherogenic lipoprotein abnormalities are present in NIDDMs even if they are apparently normolipidemic. Association of visceral fat obesity, insulin resistance and nephropathy may aggravate the atherogenic lipoprotein profile. Therefore, we propose here that plasma lipid levels of diabetic subjects must be more strictly controlled than for the non-diabetic population in order to avoid an increased risk for coronary heart disease. If they are obese or associated with insulin resistance or nephropathy, these conditions should be carefully controlled.
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PMID:Dyslipidemia in diabetes mellitus. 887 70

THE ESTIMATED TWO MILLION American Indians and Alaska Natives, while sharing certain genetic traits, belong to groups with distinct social, cultural, political, and biomedical attributes. They share with certain other ethnic minorities high poverty rates, low educational attainment, increased susceptibility to certain diseases, and elevated mortality rates. Hypertension has been reported less frequently among American Indians compared to other U.S. groups, but is increasing in frequency, is strongly associated with obesity and diabetes, and is synergistically associated with diabetes in the etiology of end-stage renal disease. The first priority for dealing with hypertension among American Indians is to maximize efforts toward control. The Indian Health Service (IHS) provides such an opportunity, which is not as readily available to other minorities. In addition to controlling hypertension, areas of fruitful investigation include studies relating hypertension to acculturation, physiology of peripheral adrenergic vasoreceptors, salt and water metabolism, and prevention or amelioration of end-stage renal disease. Understanding some of these basic processes will prove valuable for American Indians and Alaska Natives as well as the entire population.
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PMID:American Indians and Alaska Natives--overview of the population. 889 74

Recently, the number of diabetic patients in Japan has increased and reached 6 millions, and it was estimated that 1.5 million diabetic patients were suffering from diabetic complications of microangiopathy (neuropathy, retinopathy and nephropathy) and macroangiopathy. According to the study for the causes of death among Japanese diabetic patients during 10 years from 1981 to 1990, mean longevity of diabetic patients was shorter of 9.4 years in men and 13.5 years in women than those of non-diabetics. Forty percent of diabetic patients died from the vascular diseases (ischemic heart disease 14.6%, cerebrovascular disease 13.5% and renal disease 11.2%). The frequency of death due to ischemic heart disease was almost double in diabetic patients in comparison to non-diabetics in Japan. From the data obtained from the study of Japanese-American, more than 50% of them showed abnormal glucose tolerance and the frequency of ischemic heart disease was higher twice than that of Japanese. Diabetes has been recognized as one of the important risk factors for atherosclerosis, and so many factors, such as hyperglycemia, glycation, dyslipidemia, hyperinsulinemia, insulin resistance, hypertension and obesity in diabetes, are related to atherosclerosis. The relation of these factors will be introduced. Clinically, it is very important to make a check list of these factors and make an effort to diminish them for prevention of atherosclerosis of diabetic patients.
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PMID:[Diabetes and atherosclerosis]. 895 31

Ad libitum (AL) overfeeding is the most significant, uncontrolled variable affecting the outcome of the current rodent bioassay. There is a highly significant correlation between AL food consumption, the resultant obesity and body weight, and low 2-yr survival in rodents. AL feeding of diets with lowered protein, metabolizable energy (ME), and increased fiber does not improve survival. Only dietary restriction (DR) of all diets tested significantly improves survival and delays the onset of spontaneous degenerative disease (i.e., nephropathy and cardiomyopathy) and diet-related tumors. Moderate DR results in an incidence of spontaneous tumors similar to AL-fed rats, but the tumors are found incidentally and do not cause early mortality. There is a decreased age-adjusted incidence of pituitary and mammary gland tumors in moderate DR-fed rats, but tumor growth time is similar between AL and DR rats with only a delay in tumor onset time seen in DR-fed groups. Moderate DR does not significantly alter drug-metabolizing enzyme activities nor the toxicologic response to 5 pharmaceuticals tested at maximum tolerated doses (MTDs). However, moderate DR-fed rats did require much higher doses of 4 additional pharmaceutical compounds before classical MTDs were produced. Toxicokinetic studies of 2 of these compounds demonstrated equal or higher steady-state systemic exposures to parent drug and metabolites in moderate DR-fed rats. Markers of oxidative stress (lipid peroxidation, protein oxidation) are decreased and cytoprotective anti-oxidant markers are preserved in moderate DR-fed rats. But moderate DR does not delay reproductive senescence in female rats. Only marked DR delays reproductive senescence compared to AL and moderate DR-fed female rats. These and other data indicate that moderate DR is the most appropriate method of dietary control for the rodent bioassay when used to assess pharmaceuticals for human safety and compounds for risk assessment.
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PMID:The effects of diet, ad libitum overfeeding, and moderate dietary restriction on the rodent bioassay: the uncontrolled variable in safety assessment. 899 7

Emphasis on culturally based and ethnically oriented food selection by nutrition health professionals is needed to effectively plan therapeutic diets. With the influx of numerous ethnic groups into the United States and the merging of cultural practices, it is important for dietitians to become familiar with specific ethnic foods and regional cooking techniques. In this review, the influence of immigration on regional cuisine is documented. Dominant patterns of typical African-American ethnic menus for holidays and special celebrations are revealed. Analysis of common foods in the African-American culture are listed for reference, along with a glossary of ethnic foods. Renal guidelines are presented for various stages of end-stage renal disease. When planning a specific renal diet, African-American ethnic preferences can be incorporated into the meal plan or appropriate substitutions can be recommended. A suggested sample menu for hemodialysis patients that incorporates African-American preferences is included for reference. Health risks also influence current eating trends of the African-American population. Hypertension and obesity are two physiological factors that need to be evaluated and considered when planning renal diets. Literacy skills and appropriate dietary instructional material is discussed. Reference materials developed for nutrition professionals are important and can be used in the planning of renal diets for African-Americans.
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PMID:Adaptation of African-American cultural and food preferences in end-stage renal disease diets. 899 18


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