Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 29 for “"food restriction"”.
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Effects of food restriction and lysine supplementation on protein metabolism in the rat
These studies examined the effects of prolonged food restriction and lysine supplementation on growth, muscle mass, and protein metabolism in the rat. Two levels of food restriction (40% and 75%) were utilized during an 8-week feeding period to produce moderate or severe undernutrition. Rats …
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Adaptations of skeletal muscle pyruvate dehydrogenase kinase in response to food-restriction in mitochondrial subpopulations
… the effect of fed (FED) versus 48 h total foodrestriction (FR) on rat red gastrocnemius muscle PDK2 and 4 isoform content in SS and IMF mitochondria. PDK4 content was ~3-5 fold higher in SS mitochondria compared to IMF (p=0.001), and increased with FR -3-4- fold in both subpopulations …
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The placenta in adverse maternal environments; exploring how hypoxia and food restriction limit fetal growth
… hypoxia (MIH; 10% or 13% inspired oxygen), or food restriction (FR) between days 14-19 of gestation. To explore the role of the placenta in adverse conditions, the distinct functional zones of the mouse placenta, the endocrine junctional zone (JZ) and the labyrinth zone (LZ), which is …
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Changes in NPY staining in the arcuate nucleus during and after food restriction in lactating rats
This study investigated the effects of food restriction on Neuropeptide Y (NPY) staining in the arcuate nucleus of lactating rats to evaluate a role for NPY in the maintenance of lactational diestrus in food restricted rats. NPY staining was compared on days 15, 20 and 25 of lactation between …
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Pre-Exposure and Recovery in Activity-Based Anorexia
… (ABA) occurs when there is limited access to food and an opportunity to engage in high levels of physical activity. While the ABA effect is well established, the distinct functions of exercise and food restriction in maintaining ABA have not been determined. The current study examined the …
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The role of intrinsic and extrinsic factors in shaping alternative migratory tactics and metabolic phenotypes in brown trout
… within populations. In Chapter 2, I assessed how food restriction and population background influences the expression of migratory tactics in offspring from two populations that naturally differ in anadromy (i.e. sea-migration). Food restriction affected traits related to size and condition, and …
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The lateral hypothalamus and energy balance : facilitation and inhibition of perifornical self-stimulation by long- and short-term metabolic signals
… towards naturally-occurring reinforcers such as food. The lateral hypothalamus (LH) is considered a particularly good site for obtaining vigorous self-stimulation in rats. There is evidence that chronic food restriction enhances the reward value of LH electrical stimulation when the electrode is …
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Social network analysis of behavioural interactions influencing the development of fin damage in Atlantic salmon (Salmo salar)
… in which groups of fish were subjected to a long food restriction period (30 days) described in Chapter 2, high (30 kg/m3) or low (8 kg/m3) fish stocking densities (Chapter 3), predictable or unpredictable food delivery regime (Chapter 4) or a short food restriction period (10 days) described in …
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Aerobic exercise training as a mitigator of nonalcoholic fatty liver disease related fibrosis
… When animals underwent exercise training or food restriction ([about]25% reduction in daily caloric intake)for 12 weeks, the obese rats had modest improvements in both liver fibrosis and inflammation. These improvements were associated with lowered hepatic stellate cell activation, a cell …
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Factors Contributing to Weight Loss Induced by Intraventricular 6-Hydroxydopamine Lesions in Diabetes (db/db) Mice.
… loss following 6-OHDA lesions. Body weight, food intake, activity levels, body temperature, brain amine levels, blood glucose, adiposity and pancreatic islet cell morphology were assessed. In all animals treated with 6-OHDA, substantial telencephalic and hypothalamic NE reductions were …
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Prenatal Undernutrition, Metyrapone, and the Cerebrovasculature
… vascular health. Our results demonstrated that food restriction as well as perturbations to early glucocorticoid exposure are critical to the development of the cerebrovasculature, and that pharmacological glucocorticoid inhibition during gestation can alter the vulnerability to mild …
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The occurrence and toxicology of heavy metals in Chesapeake Bay waterfowl
… study were to elucidate relationships between food habits and tissue accumulations of heavy metals in Chesapeake Bay waterfowl and to determine effects of chronic cadmium and lead ingestion on energy metabolism in waterfowl. Concentrations of cadmium, lead, copper, and zinc were measured in 774 …
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The Influence of Sustained CB1 Blockade During Adolescence on Breakpoints in a Progressive-ratio Paradigm
… adolescence and allowed unrestricted access to food. Control groups were treated with vehicle during the same developmental period and allowed either unrestricted access to food or were pair-fed with a member of the SR-treated group. Motivation to work for food was measured in progressive-ratio …
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Contributions of early life adversity, sex, and traits towards compulsive opioid self-administration
… [i.e., forced-swim, restraint, predator odour, food-restriction, and social isolation; termed ‘early life adversity’ (ELA)]. As adults (PND 60-140), I assessed them on numerous addiction-relevant behavioural traits (i.e., impulsivity, anxiety, novelty-preference, and attraction to reward cues). …
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Leptin Action on Dopamine Neurons: Biochemical and Behavioral Analysis
… are brain regions commonly activated by hedonic foods and drugs of abuse, and therefore, potentially common mechanisms underlying behaviors associated with them. Additionally, the metabolic state of an animal can affect drug seeking behavior. The discovery that leptin receptor (Lepr) is expressed …
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L’isolamento sociale riduce marcatamente la risposta dei neuroni dopaminergici mesocorticali agli stimoli piacevoli.
… neurons to anticipation and consumption of food. Rats have been food restricted using a protocol that consists in training the animals to consume their meal for only two hours for day. Using vertical microdialysis, extracellular concentrations of dopamine in response to anticipation and …
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The development and plasticity of visuo-spatial orienting behaviors and underlying circuitry in adolescent mice
… biting and killing, even in the absence of food restriction. Unexpectedly, we found that adolescent females displayed the most appetitive orienting response towards natural prey and "prey-like" sweeping visual motion stimuli presented on computer screens relative to any other group. On the …
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Experimental Analysis of Operant Learning with Social Reinforcement in Mice
… can be established with SR without using food reinforcement/food restriction, 2) SR appears to be more effective when it is with a novel/less familiar conspecific mouse and that this may be due in part to the behavior of the latter, and 3) the ideal duration of contingent SR interactions …
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Análise comparativa da qualidade nutricional de ricotas tradicional, light e orgânica vendidas em João Pessoa
… as low - fat and widely used by people with food restriction (low - calorie diets, cardiovascular disease, elevated cholesterol and triglycerides), such a finding becomes alarming. In determination of protein there was a surge of 7.50 ± 0.14 to 21.76 ± 0.51, which is in accordance with other …
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Obesity Relapse in Women
… in the case studies included: the impact of food restriction, the impact of having personal choice taken away, negative emotions, physiological factors, lifestyle demands and the return to familiar food habits. Based on this study, it is recommended that obesity practitioners consider …
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