Search Results
Results 301 - 350 of 625
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Manabe S - - 1993
The effects of phenylacetate (PA) on fetal brain growth were examined in pregnant rats receiving a 20% casein diet with 1.0, 1.5, 2.0 or 2.5% PA. Control rats were fed the 20% casein diet ad libitum or restricted to daily consumption of 9 and 6 g. In experimental groups of ...
Meguid M M - - 1993
To determine whether brain glycogen concentrations change during parenteral nutrition, Fischer 344 rats with jugular vein catheters received 0.9 N saline or parenteral nutrition providing 100% of daily calories (PN-100). Rats were killed after 4 days of PN-100 and serially after PN-100 was stopped. Food intake decreased during PN-100 to ...
Westwood N N - - 1993
The aim of the study was to determine the activity of monoamine oxidase (MAO) and the contributions of the A and B forms of MAO to the metabolism of norepinephrine (NE) in isolated perfused lungs of the rat. Preliminary experiments to investigate the MAO-A and MAO-B selective inhibitors, Ro41-1049 and ...
Murphy H M - - 1993
Vasopressin-containing, Long-Evans (LE) rats and vasopressin-deficient, Brattleboro (DI) rats were monitored for activity and core body temperature via telemetry. Rats were exposed to a 12-12 light-dark cycle and allowed to habituate with ad lib access to food and water. The habituation period was followed by an experimental period of 23 ...
Velasco Plaza A - - 1993
The light/dark (L/D) rhythms of food and water intake and urine output were studied in normal and diabetic rats for 7 consecutive days at 4-h intervals. The control rats showed the highest values of these parameters during the dark phase (83.68% food, 68.71% water, and 67.44% urine). The diabetic rats ...
Giner M - - 1993
The effects of a continuous intragastric (via a gastrostomy) and intravenous (via an indwelling jugular catheter) infusion of 3% ethanol at 3 ml/h on food intake was examined in rats randomly assigned to a two period crossover study. The 3% ethanol solution provided 19 kcal/day, which was equivalent to about ...
Whishaw I Q - - 1993
Although it was once thought that the corticospinal (pyramidal) tract was the main substrate of voluntary movement, the extent to which it is involved in the control of proximal vs. distal musculature, independent finger movements, and movements characteristic of different species of animals now is unclear. The objective of this ...
Whishaw I Q - - 1993
Rats transport food from exposed areas to covered areas where they eat it or leave it. Although there is evidence that limbic structures play a role in food transport, their role is controversial. Here it was found that although many rats with large hippocampal, septal/diagonal band of Broca or dorsomedial ...
Burden V R - - 1993
Activity-based anorexia is characterized by suppressed food intake and excessive physical activity. These behaviors are typical of persons with anorexia nervosa. Activity of the hypothalamic-pituitary-adrenal axis is known to be elevated in anorexia nervosa. We investigated the status of this axis in activity-based anorexia. Meal fed-control (MFC) and meal fed-wheel ...
Amin R J - - 1993
Rats exposed to lead (lead acetate) in doses of 0.2 and 0.5 mg/ml in drinking water for a period of 90 days showed mild to moderate changes in food consumption compared to control group. Drug interactions in lead exposed rats with metoclopramide, atropine sulphate, propranolol, cyproheptadine and mepyramine maleate when ...
Baskin D G - - 1993
Three groups of ovariectomized rats were treated for 6 days: 1) estradiol benzoate (100 micrograms/kg) (SC) and fed ad lib; 2) vehicle-injected controls fed the same amount of food as eaten by estradiol-treated rats; 3) vehicle-injected, free-feeding controls. Specific binding of insulin to liver and hypothalamus slices was measured by ...
Kidwai A M - - 1993
Hunger and satiety are complex interplay of several factors in human and animal species. Reduced food intake has also been observed under various pathological conditions. Earlier, we have been able to isolate an endogenous glycoprotein from erythrocyte membranes, which causes anorexia in rats. In the present study, a similar anorexigenic ...
Gnacinska G - - 1993
The hormonal mechanism involved in stress-induced dysregulation of feeding behaviour is not known. In this study anterior pituitary hormones: GH and prolactin/PRL were analyzed, immediately and 60 min. after 1 hr immobilization stress, in rats with enhanced or with diminished food intake. The results show, in rats with diminished food ...
Harris G D - - 1993
To determine if osmoprotective molecules accumulate in the brain during severe DKA with extreme (DKA-E) and moderate (DKA-M) dehydration, Fischer 344 rats (250-350g) were given STZ 45 mg/kg (i.p.) and allowed food and water ad lib. DKA-M received NaCl 77 mmol/L 60 ml/kg (i.p.) q 4 hrs. on day 2. ...
Natelson B H - - 1992
OBJECTIVE: To evaluate the long-term consequences of stress in rats with genetic hypertension. DESIGN: Rapp-Dahl salt-sensitive rats, maintained on a low-salt diet, were stressed periodically over 8 weeks during which time their blood pressures were measured. In experiment 1 both stressed and unstressed control rats were given ad libitum access ...
Bauman R A - - 1992
The effects of wheel running on the food intake of rats, and on the extent to which rats defend their daily food intake against increases in the instrumental cost of food, were studied in a closed economy. Rats lived in cages that were attached to running wheels. Within each cage, ...
Hulsey M G - - 1992
Parabiosis and blood-transfer studies with rodents suggest the existence of humoral factors capable of affecting energy balance. The nature and origin of these factors is undetermined. Aqueous extracts of adipose tissue from overfed rats significantly reduce food intake when administered intraperitoneally (IP) or intracerebroventricularly (ICV). We term the agent(s) responsible ...
Plata-Salamán C R - - 1992
Interferons (IFNs) are immunomodulators with neuromodulatory activities. To study the effects of IFNs on the central regulation of feeding, rats were subjected to various applications. The results show the following. 1) Intracerebroventricular microinfusion of rat IFN (15-225 IU/rat) decreased short-term (2-h) food intake in rats. Computerized analysis of behavioral patterns ...
Stephan F K - - 1992
Reentrainment of anticipatory activity (AA) after phase shifts of food access was studied in rats with lesions of the suprachiasmatic nuclei. Eight- or 10-h phase delays of feeding time resulted in delaying transients of AA. Twelve-h phase shifts and some 10-h phase advances resulted in rapid reentrainment (2-3 days) without ...
McCullough L D - - 1992
Two experiments were undertaken to investigate the role of accumbens dopamine (DA) in food-related motor activities. Although presentation of large amounts of food elicits feeding behavior, periodic food presentation (PFP; e.g. a 45-mg pellet every 45 s) induces considerable locomotion, rearing and other motor activities in food-deprived rats. In the ...
Ramirez I - - 1992
Two strains of rats (Charles River CD and Lewis) were fed high-moisture (71% water) diets containing 50-300 mg acarbose/kg dry diet for 1-3 wk. Acarbose impaired carbohydrate digestion in both strains, as evidenced by increased fecal excretion and increased intestinal contents. For both strains the highest dose of acarbose tended ...
Cooper R A - - 1992
Development of nymphs and oocyte maturation in adults were examined in Blattella germanica (L.) reared on three commercial diets. Nymphs fed rat food developed significantly faster than nymphs fed two commercial dog foods. Similarly, oocytes matured more quickly in adult females that were raised on rat food than in females ...
Lapchak P A - - 1992
Effects of chronic intraventricular administration of recombinant human brain-derived neurotrophic factor (rhBDNF) or recombinant human nerve growth factor (rhNGF) on presynaptic hippocampal cholinergic function in adult rats with partial fimbrial transections were measured. Partial fimbrial transections reduced synaptosomal high affinity choline uptake, choline acetyltransferase activity, and [3H] acetylcholine synthesis by ...
Shimomura Y - - 1992
This study was undertaken to investigate changes in feeding behavior and ambulatory activity, in rats with D-galactosamine (D-GAL)-induced hepatic failure. D-GAL was administered (1000 mg/kg) IP at 1800, just before the dark phase. The first significant decrease of ambulatory activity in rats with hepatic failure was observed between 0000 and ...
Watanabe K - - 1992
The present study investigated the application of female rats with activity stress as an animal model for anorexia nervosa. Young female rats were singly housed in activity-wheel cages with food-restricted schedule (2, 3, or 4 h of food availability per day) for 3 weeks. Estrous cycle, body weight, food intake, ...
Pal G K - - 1992
Bilateral lesions of nucleus septal lateralis resulted in a sustained and significant increase in water intake, without any change in food intake. Intracerebral injection of dopamine (DA) or of spiperone (a central D2-receptor antagonist) did not elicit any change in water or food intake. The polydipsia resulting from septal lesions ...
Goto S - - 1992
Total colectomy, mucosal proctectomy and ileo-endorectal pull-through (IEP) have been carried out mostly in dogs, because of high mortality after IEP in rats. This report evaluates the effects of elemental diet on bodily metabolism and survival following IEP in the rat. Survival at 4 weeks was 100% in the sham ...
Molloy D - - 1992
An experimental radiopaque resin root canal sealer was tested for tissue biocompatibility in rat connective tissue. The controls were four widely used sealers: Sealapex, Kerr's sealer, AH-26, and Roth's sealer. Polyethylene tubes were filled with the sealers and allowed to set for 24 hours in 100% humidity. Each sealer was ...
Beck C H - - 1992
Excessive drinking, in rats made polydipsic on intermittent delivery of food pellets, is inversely related to the time the rat spends with its head in the feeder, early in the interfood interval. In a sensitization model, this explains why food textures that induce more oral activity, e.g., powder, do not ...
Ahlersová E - - 1992
The effect of various photoperiods on circadian rhythms of chosen parameters was investigated in laboratory rats. SPF male Wistar rats were adapted for six weeks to artificial light-dark cycles (LD 8:16, 12:12, 16:8). The light was switched on at 07.00 h in all regimens. The rats were killed at 3-hour ...
Das S - - 1992
Stevioside and rebaudioside A, two intense natural sweeteners, that are constituents of the South American plant Stevia rebaudiana, were tested for cariogenicity in albino Sprague-Dawley rats. Sixty rat pups colonized with Streptococcus sobrinus were divided into four groups and fed stevioside, rebaudioside A or sucrose added to basal diet 2000 ...
Steketee J D - - 1992
We have previously demonstrated that depletion of forebrain norepinephrine (NE) led to an attenuation of neophobia in a novel environment, as defined by a greater preference for novel food over familiar food. To study further the role of forebrain NE in neophobia we chronically infused noradrenergic receptor ligands or forskolin ...
Mistlberger R E - - 1992
Rats anticipate a fixed daily feeding time by entrainment of a component of their multioscillatory circadian system. The range of stimuli capable of entraining this component is little studied. Previous studies suggest that restricted water access is not an effective entrainment stimulus, as measured by general locomotion. The present study ...
Tordoff M G - - 1991
In separate experiments, rats with open gastric cannulas were sham-fed either 32% sucrose solution or 15% corn oil emulsion. The rats' cannulas were then closed, and food intake was measured for 2 h. Food intake was greater after sham-feeding either fluid than after tests when no fluid was available. These ...
Bray G A - - 1991
The present studies have examined the hypothesis that food intake and sympathetic activity are inversely related. Following lateral hypothalamic lesions, food intake decreases and sympathetic activity rises. When pair-gained animals are used, the sympathetic activity of the LH-lesioned animals is above that of ad lib fed controls, and the sympathetic ...
Mandavilli U - - 1991
We describe a novel technique for complete and continuous bladder urine collection in conscious unrestrained rats. After urethral ligation, a silastic catheter is placed through a flexible steel tether, tunneled subcutaneously from the posterior neck area to a suprapubic incision, and inserted and fixed into the exposed urinary bladder. The ...
Furuse M - - 1991
The effect of dietary sorbose on food and water consumption was investigated in growing rats. Rats (26-day old) were fed diets containing 0, 100, 200 or 300 g sorbose/kg diet for 5 weeks in Experiment 1. Daily food and water intakes were measured at day 0, 7, 14, 21, 28 ...
Gulati K - - 1991
The effects of opioid agonists, morphine (MOR) and ketocyclazocine (KCZ), and antagonists, naltrexone (NALTX) and Mr2266, were investigated on food intake under various conditions, i.e., during light and dark phases of diurnal cycle and free-fed and fasting states in rats. NALTX showed a greater anorexic effect during dark phase, whereas ...
Spanheimer R - - 1991
Malnutrition is associated with defects in connective tissue metabolism such as altered growth and wound healing. Because collagen is the major protein in most tissues, we determined the threshold for induction of altered collagen production by partial food restriction in rats. Groups of animals were fasted 2 or 4 d ...
Dial J - - 1991
Total food intake and intake of discrete dietary components, carbohydrate, fats, and protein, throughout pregnancy and lactation were measured in the albino rat, with virginal rats acting as controls. The dietary components were isocaloric and presented in a self-selection situation. Although the reproductive subjects ate more carbohydrate, protein, and total ...
Muralidhara D V - - 1991
Food consumption patterns were studied during ad-libitum feeding of rats undernourished for 21 or 60 days after birth. Rats undernourished for 21 days consumed less food than the controls on a whole animal basis. But the food intake was higher during the early part of ad-libitum feeding when expressed on ...
Whishaw I Q - - 1991
We observed the movements of rats (Rattus norvegicus) after they had eaten food pellets of various size or hardness. With rooted hindlegs, they made head scans, with vibrissae in contact with the substrate, that began over the area below where they had eaten and then expanded to include almost the ...
Goto S - - 1991
Ileo- or jejuno-endorectal pull-through following total colectomy (TC) and massive small bowel resection (SBR) was performed in the rat to investigate the natural course of its condition. Animals were assigned to five experimental groups: TC only (n = 6), TC + 25% SBR (n = 6), TC + 50% SBR ...
Whishaw I Q - - 1991
Reaching for food by rats, with the limb contralateral to limb area motor cortex damage, was analyzed using end-point scores, videoanalysis, and Eshkol-Wachmann Movement Notation (EWMN). End point results from groups of rats with small, medium, and large lesions showed reaching success and amount of food grasped per reach decreased ...
Zaporowska H - - 1991
1. Male Wistar rats were given, for four weeks, a limited amount of food, or the amount of food and water equal to that consumed by rats drinking solely an aqueous solution of ammonium metavanadate instead of water (AMV) of 0.3 mg V/cm3 concentration. 2. In rats with limited access ...
Akiyama Y - - 1991
An experimental psychological study was undertaken to assess the effect of a change in dietary habit upon behavioural development, using as a laboratory animal male Wistar rats maintained on natural foods and a processed food. Forty male Wistar rats were weaned at 21 days of age and divided into two ...
Scalera G - - 1991
The experiments reported here attempted to examine in two groups of rats the effects on the taste preferences, food and fluid intake, energy balance and body weight gain of corticocerebellar lesions involving, primarily, the Lobulus VI (LVI) or the Lobulus Paramedianus (LP). The results showed that the lesions of LVI ...
Albert D J - - 1991
Castrated male rats (N = 27) with medial hypothalamic lesions or sham lesions were placed on a 23-h food-deprivation schedule and adapted to a highly palatable liquid food. They were also given two tests of defensiveness toward an experimenter. All animals were then housed in medial hypothalamic lesion/sham lesion pairs ...
Hernandez L - - 1990
Fluctuations of cortical dopamine during feeding were examined by in vivo microdialysis. Dopamine (DA), 3,4-dihydroxyphenylacetic acid (DOPAC), and homovanillic acid (HVA) were measured by high performance liquid chromatography and electrochemical detection. Food-deprived rats were trained to eat by pressing a bar for food when a light and a feeder were ...
Mistlberger R E - - 1990
Twenty-four hour schedules of restricted food availability entrain a component of the circadian activity rhythm in rats via a food-entrainable pacemaker separate from the light-entrainable pacemaker. The effect of aging on food-entrained circadian rhythms was examined in 6 rats maintained on a restricted diurnal feeding schedule from age 3-21 months ...
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