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Results 601 - 650 of 711
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Pucciarelli H M - - 1987
Holtzman rats were subjected to food restriction during gestation or lactation, or both periods (overall stress). At weaning, male pup skulls were measured and female brains and cranial masticatory muscles were weighed and a neuromuscular index was calculated. It was found that gestational protein-calorie malnutrition (PCM) without suckling restoration accounted ...
Schwartz A G - - 1986
It has been known for many years that reducing the food intake of laboratory mice and rats inhibits the development of a broad spectrum of chemically induced and spontaneous tumors, but the mechanism of this effect is poorly understood. Food restriction of A/J mice for two weeks is now shown ...
Nelson W - - 1986
The possibility that circadian rhythm alteration may contribute to the life-prolonging effect of food restriction was investigated in female CD2F1 mice housed in a room with a 12-h span of fluorescent lighting daily. A control group was allowed to feed ad libitum throughout life while three other groups began lifelong ...
Sisk C L - - 1986
This experiment concerned the changing patterns in secretion of luteinizing hormone (LH), follicle-stimulating hormone (FSH), and growth hormone (GH) under conditions of food restriction and subsequent catch-up growth. Weanling male rats were given either restricted (4 g food/day) or unrestricted access to food until 60 days of age. At this ...
Cleary M P - - 1986
Previously, it was found that lean and obese Zucker rats (9-15 wk of age) responded differently to the first of four cycles of food restriction/refeeding. In later cycles, they responded similarly. The present study was undertaken to determine if this finding was due to age, adaptation to the intervention or ...
Rossi T M - - 1986
The reversibility of the effects of postnatal malnutrition on the intestinal brush border enzymes and somatic and intestinal weights were examined using either ad libitum or restricted feedings. Malnutrition was induced in the immediate postnatal period by expanding newborn rat litters to 20 pups/dam. At 21 days of age, malnourished ...
Sweatman M C - - 1986
We report the case of an 8.5-year-old girl with oro-facial granulomatosis associated with clinical atopy, in whom relapse of her granulomatous disorder was shown to be related to exposure to specific food additives, viz. carmoisine, sunset yellow and monosodium glutamate. Treatment with a restricted diet resulted in considerable regression in ...
Desautels M - - 1986
Fasting for 36-48 h or food restriction (30% reduction of daily food intake for 6 weeks) caused brown adipose tissue (BAT) atrophy in hamsters. Fasting-induced atrophy was characterized by reductions in tissue mass, DNA, protein, and thermogenin. By contrast, food restriction had no effect on tissue cellularity (DNA) but markedly ...
Forger N G - - 1986
The role of white adipose tissue in development of the reproductive apparatus of male golden-mantled ground squirrels was assessed by surgical removal of fat (lipectomy) immediately prior to onset of hibernation or by manipulation of fat levels through food restriction for 5 wk preceding hibernation. Animals then were maintained without ...
Bronson F H - - 1986
Prepubertal female rats were maintained continuously at 45% of their expected 50-day body weight by restricting their food intake. Uteri and ovaries declined in weight under these conditions. No evidence of pulsatile LH release was seen when these animals were examined at 50 days of age. Allowing unlimited access to ...
Hashmi R S - - 1986
Wistar strain adult male and female rats were given 25, 50 and 75% less food than an ad libitum-fed group of rats for 45 d and the effects of food restriction on hepatic drug metabolizing enzymes, microsomal electron transport components, NADPH-dependent lipid peroxidation and glutathione-S-transferase activities were studied. Compared to ...
Honma K - - 1986
The roles of food and/or water ingestion in the regulation of plasma corticosterone level were examined in rats under restricted daily feeding. When the time of food-pellets and water supply was restricted to 2 hours in the early light period (meal feeding) for 2 weeks, the corticosterone level increased prior ...
Chik C L - - 1986
Male rats, kept under a lighting condition of 14 hours light and 10 hours dark were subjected to either ad libitum feeding or 50 per cent caloric restriction. At the end of 3 weeks, body weight and serum tryptophan (TRP) and serotonin (5 HT) were determined over a 24 hours ...
Shido O - - 1986
The effects of chronic administration of naloxone (120-150 micrograms X kg-1 X h-1) on the wheel running activity (WR) and on food and water intakes were studied in male Wistar rats subjected to a 2-h restricted feeding (1200-1400 h) schedule at 24 +/- 1 degrees C and LD 12:12 (L: ...
Prasad R - - 1986
Riboflavin deficiency and food restriction were associated with greater solubility and lesser total and insoluble collagen concentration in rat skin. Studies using 3H-proline suggest that the lower collagen concentration under these conditions could be due to a decrease in synthesis as well as slow maturation of collagen. The mechanisms underlying ...
Borowitz J L - - 1986
Moderate changes in food intake produced by diethylstilbestrol in rats were not well correlated with changes in urinary norepinephrine, vanillylmandelic acid or epinephrine. Apparently moderate dietary restrictions are not capable of decreasing adrenergic activity, and the decreased urinary norepinephrine produced by diethylstilbestrol is not associated with decreased availability of dietary ...
Hayashida M - - 1986
The changes with age in the ultrastructure of the kidneys were explored in ad libitum fed rats with restricted food intake started soon after weaning or started in young adult life or limited to early life and in rats restricted in protein but not caloric intake. Many ultrastructural changes occurred ...
Yu B P - - 1985
The aims of this research were (a) to compare food restriction initiated in adult life of male Fischer 344 rats with that limited to early life or involving most of the life span on physical, metabolic, and longevity characteristics and (b) to study a similar level of protein restriction without ...
Maeda H - - 1985
The aim of this study was to explore the effects of nutritional manipulations on the occurrence and progression of age-related pathologic lesions in male Fischer 344 rats. The following nutritional regimens were studied: (a) ad libitum feeding, (b) food restriction initiated at 6 weeks of age, (c) food restriction initiated ...
Kohno A - - 1985
The effects of chronic food restriction on grading scores of senescence, deposition of senile amyloid (ASSAM), mean life span and 10th decile were investigated by using animal models for accelerated senescence (SAM-P/1) and for normal aging (SAM-R/1). The experimental groups consisted of control (ad libitum fed), 80% (fed 80% of ...
Di Giulio R T - - 1985
The single and combined effects of cadmium ingestion and food restriction were examined in a 42-day experiment with male, juvenile mallard ducks. A 2 X 3 factorial design was employed consisting of two levels of food supply (ad libitum and 55% of ad libitum intake) and three levels of cadmium ...
Patterson N H - - 1985
Data from plating experiments indicated that Halobacterium cutirubrum NRC34001 has at least two separate restriction-modification systems. A spontaneous or induced loss of one or both systems resulted in four restriction-modification phenotypes. There was a positive correlation between changes in gas vacuolation phenotypes and either restriction-modification system.
Rehm S - - 1985
A life span study with 900 female virgin Han:NMRI mice (300 outbred controls, 300 of a fat subline and 300 of a lean subline) was carried out to determine the occurrence of spontaneous disease with ad libitum or restricted feeding. The major age-dependent non-neoplastic alteration of the thyroid was a ...
Johnson R J - - 1985
The influence of two methods of food restriction during rearing on the body and liver composition of layer-type birds was investigated during and after restriction. In each of two experiments groups of birds were reared on one of three treatments: ad libitum food intake (A), time-limited food restriction (TR) or ...
Rehm S - - 1985
A life-span study with 900 female virgin Han:NMRI mice (300 outbred controls, 300 of a fat subline and 300 of a lean subline) was carried out to determine the occurrence of spontaneous diseases with ad libitum or restricted feeding. Rare non-neoplastic lesions of the lungs (1-8%) were secondary inflammations, focal ...
Larsen T S - - 1985
The high-arctic Svalbard reindeer (SR) deposit great amounts of body fat in autumn for subsequent use during winter when food is often in short supply. Captive SR and, for comparative reasons, the sub-arctic Norwegian reindeer (NR) were offered 15% of their ad libitum food intake during a 21-day period in ...
Hyams J S - - 1985
Chronic nonspecific diarrhea (CNSD) remains a common pediatric problem. Previous reports have suggested disordered small intestinal motility, food intolerances, dietary fat restriction, and excessive fluid consumption as possible contributory factors. We have recently encountered a subset of children with CNSD in whom nonexcessive apple juice intake seemed to cause their ...
Kraly F S - - 1985
Eating and drinking in spontaneously hypertensive (SHR) and Wistar-Kyoto (WKY) rats were measured at 5-17 wk of life. The SHR drank significantly more water in 24 h than WKY as early as wk 9, spilled more dry food than did WKY, and exhibited an inverse relation between 24-h water intake ...
McCarter R - - 1985
Metabolic rate was determined by measuring O2 consumption in two groups of 6-mo-old male rats fed ad libitum (group 1) or maintained on a life-prolonging food-restriction regimen for 4.5 mo (group 2). These measurements were made continuously for 23.75 h under conditions nearly identical to those of the daily life ...
Blum J W - - 1985
Effects of food restriction, followed by refeeding, on energy and nitrogen metabolism, growth rates and blood levels of hormones and metabolites were studied in steers. During the restriction period, which lasted for almost 5 mo, allowance for energy and nitrogen were close to maintenance requirements. Heat production and growth rates ...
Kerr J S - - 1985
Emphysema is produced by severe food restriction in rats and is postulated to result from depletion of lung connective tissue. We studied (1) whether total dietary protein depletion worsens nutritional emphysema, and (2) whether the reduced content of lung connective tissue in nutritional emphysema results from lack of accumulation caused ...
Glore S R - - 1985
The effects of food restriction (50% of ad libitum-fed controls) on maternal tissues during lactation (LR) or during both gestation and lactation (GLR) were examined in rats. Skeletal muscle protein, RNA and fiber diameter were reduced in response to the LR and GLR treatments, but muscle DNA and fiber number ...
Blank J L - - 1985
The reproductive responses of two species of wild rodents, house mice and deer mice, were evaluated following a 30% reduction in food intake for 5 wk. These animal models were chosen as prototypes of other rodent species because each employs unique functional adjustments when confronted with reduced resources in their ...
Johnson R J - - 1984
Fasting heat production was measured in darkened respiration chambers at three chronological and three physiological ages during rearing and laying in a layer strain to determine the effects of food restriction during rearing. There were three rearing treatments (42 to 162 days of age) in which birds were allowed ad ...
Marks H L - - 1984
Consumption following a 24-hr withdrawal from feed or water was examined in selected and nonselected broilers from 0 to 10 days of age and in low body weight (LW), high body weight (HW), and HW X LW (F1) progeny from 120 to 132 days of age. In posthatch trials, body ...
Sullivan E A - - 1984
Monoamine oxidase inhibitors (MAOIs) are attracting renewed attention as effective antidepressants for refractory depressions, particularly among the elderly. However, widespread fears concerning the interactions of MAOIs with tyramine-containing foods have led to the development of long and complicated diets. These diets have served as an obstacle to the ready use ...
Stiglick A - - 1984
Naive food-restricted and food-satiated rats were given a choice between ethanol (8%, 16%, or 32%) and water for 22 hours/day over 14 days. On all days and at all concentrations, intakes of ethanol were significantly higher in the food-restricted animals. Doses consumed by these animals were highest when 32% ethanol ...
Hamm R J - - 1984
Nine rats were placed on a restricted food diet for 14 days and nociceptive thresholds were measured by the tail-flick procedure. After 24 hr of food restriction nociceptive thresholds increased. This initial increase in nociceptive threshold was followed by a decrease in pain threshold on the second day of food ...
Kohlschütter A - - 1984
The GM1 gangliosidoses are clinically characterized by the combination of a degenerative process in the brain and of storage phenomena in extra-neural tissues, particularly in bones and visceral organs. Phenotypic variability is pronounced. "Classical" types, according to the age at onset, are infantile ("generalized"), juvenile, and adult forms. In rare ...
Kubo C - - 1984
Reduced food intake doubles and even triples the life span of (NZB X NZW)F1 (B/W) mice and greatly influences of food intake while keeping vitamin and mineral intake constant in mice of the MRL/Mp-lpr/lpr (MRL/l) strain. Restriction of food intake greatly prolongs life. This influence also was seen when dietary ...
Johnson R J - - 1984
Production responses of laying hens to food restriction during rearing were measured in two trials. Food was restricted by two methods: time restriction (TR, food continuously available for 24 to 30 h each 72 h) and proportion restriction (PR, daily allocations of about 60 to 70% of that consumed by ...
Walker J I - - 1984
Exaggerated fears of monoamine oxidase inhibitors (MAOIs) and of their interactions with foods often restrict their use. A review of the literature reveals seven food items most likely to produce a hypertensive crisis in combination with MAOI administration: aged cheeses, smoked or pickled fish, beef or chicken liver, dry fermented ...
Ricci G L - - 1984
To test the hypothesis that the presence of food in the intestine plays a role in the control of serum bilirubin levels, the effect of a 1674 kJ (400 kcal) diet, including non-absorbable material able to produce an intestinal bulk, was compared with the effect of caloric restriction alone. In ...
Hadler M H - - 1984
Modest restriction of sodium intake is commonly prescribed in hypertensive or fluid-retaining states in the elderly. In recent years this intervention is generally adjunctive to pharmacologic therapy. Its utility was tested by comparison of baseline serum urea nitrogen (BUN) and creatinine levels, weight, and mean blood pressure with these determinations ...
Blank J L - - 1984
Spermatogenesis is generally viewed as being resistant to reduced food intake in inbred strains of adult mammals. This consensus stems from studies that have failed to place testicular responses within the context of a species' reproductive characteristics. We exposed two species of wild rodents, house mice and deer mice, to ...
Harrison D E - - 1984
Restricted feeding of rodents increases longevity, but its mechanism of action is not understood. We studied the effects of life-long food restriction in genetically obese and normal mice of the same inbred strain in order to distinguish whether the reduction in food intake or the reduction in adiposity (percentage of ...
Lloyd T - - 1984
Food restriction was used to increase the life span of normotensive (WKY) and Spontaneously Hypertensive Rats (SHR). When SHR's were maintained on 40% of an otherwise typical lab rat diet, their mean life spans increased from 18 months to over 30 months. The mean life times of normotensive rats which ...
Young R A - - 1984
The interrelationships between body weight, food consumption and plasma thyroid hormone concentrations were studied during the spring, summer and fall in two groups of woodchucks: those allowed to eat ad libitum and those kept at their March weight by food restriction. The food consumption of the ad libitum fed control ...
Kalu D N - - 1984
In the first of two studies, female Wistar rats were fed ad libitum or 60% of the ad libitum intake. In the second study, female Sprague Dawley rats were given subcutaneous injections of DHEA (2-4 mg/day) five times per week or received similar volumes of the solvent vehicle. Animals in ...
Savard P - - 1983
The norepinephrine (NE) concentration of 14 discrete brain nuclei of rats fed with either purina rat chow or highly palatable foods, given ad libitum or in a restricted quantity isocaloric with the Purina rat chow diet, was measured by high performance liquid chromatography with electrochemical detection. The NE level was ...
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