Search Results - "Volkoff, Helene"

The Neuroendocrine Regulation of Food Intake in Fish: A Review of Current Knowledge by Volkoff, Helene

“…Fish are the most diversified group of vertebrates and, although progress has been made in the past years, only relatively few fish species have been examined…”
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Fish as models for understanding the vertebrate endocrine regulation of feeding and weight by Volkoff, Helene

“…The frequencies of eating disorders and obesity have increased worldwide in recent years. Their pathophysiologies are still unclear, but recent evidence…”
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Gut Microbiota and Energy Homeostasis in Fish by Butt, Robyn Lisa, Volkoff, Helene

“…The microorganisms within the intestinal tract (termed gut microbiota) have been shown to interact with the gut-brain axis, a bidirectional communication…”
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The Role of the Thyroid Axis in Fish by Deal, Cole K, Volkoff, Helene

“…In all vertebrates, the thyroid axis is an endocrine feedback system that affects growth, differentiation, and reproduction, by sensing and translating central…”
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Effects of potential climate change -induced environmental modifications on food intake and the expression of appetite regulators in goldfish by Nadermann, Noelle, Seward, Robin K., Volkoff, Helene

“…Climate changes due to global warming result in part from the release of gases such as carbon dioxide (CO2) and methane into the atmosphere and results in…”
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Regulation of feeding behavior and food intake by appetite-regulating peptides in wild-type and growth hormone-transgenic coho salmon by White, Samantha L., Volkoff, Helene, Devlin, Robert H.

“…Survival, competition, growth and reproductive success in fishes are highly dependent on food intake, food availability and feeding behavior and are all…”
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The effects of environmental changes on the endocrine regulation of feeding in fishes by Volkoff, Helene

“…Fishes are exposed to natural and anthropogenic changes in their environment, which can have major effects on their behaviour and their physiology, including…”
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Appetite regulating peptides in red-bellied piranha, Pygocentrus nattereri: Cloning, tissue distribution and effect of fasting on mRNA expression levels by Volkoff, Hélène

“…•Apelin, CCK, CART, PYY and orexin were cloned in red-bellied piranha.•All peptides are widely expressed within piranha brain and peripheral tissues.•Fasting…”
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Cloning, tissue distribution and effects of fasting on mRNA expression levels of leptin and ghrelin in red-bellied piranha ( Pygocentrus nattereri ) by Volkoff, Hélène

“…Highlights • Leptin and ghrelin were isolated in red-bellied piranha. • Both peptides are widely expressed in brain and peripheral tissues, including gut. •…”
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Effects of fasting on the central expression of appetite-regulating and reproductive hormones in wild-type and Casper zebrafish (Danio rerio) by London, Sydney, Volkoff, Hélène

“…•Fasting increases expressions of appetite and reproductive hormones in wild-type, but not Casper, zebrafish.•Females with larger GSIs have higher levels of…”
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In vitro assessment of interactions between appetite-regulating peptides in brain of goldfish (Carassius auratus) by Volkoff, Hélène

“…•Complex central interactions between appetite-regulating peptides exist within the brain of goldfish.•Apelin and orexin stimulate each other and NPY and…”
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The effects of fasting and appetite regulators on catecholamine and serotonin synthesis pathways in goldfish (Carassius auratus) by Mandic, Stephanie, Volkoff, Hélène

“…Monoamine neurotransmitters such as catecholamines [dopamine (DA), norepinephrine (NE) and epinephrine (E)] and serotonin have been shown to influence feeding…”
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Effects of fasting and feeding on the brain mRNA expressions of orexin, tyrosine hydroxylase (TH), PYY and CCK in the Mexican blind cavefish ( Astyanax fasciatus mexicanus ) by Wall, Alicia, Volkoff, Hélène

“…Highlights ► OX, TH, PYY and CCK were cloned in blind cavefish. ► Fasting increases OX and TH brain mRNA expression but has no effect on PYY and CCK…”
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Effects of short-term exercise on food intake and the expression of appetite-regulating factors in goldfish by Nadermann, Noelle, Volkoff, Hélène

“…•In mammals, exercise affects food intake.•Goldfish submitted to exercise had a lower post-exercise food intake compared to control fish.•Exercise increased…”
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Peripheral injections of cholecystokinin, apelin, ghrelin and orexin in cavefish ( Astyanax fasciatus mexicanus ): Effects on feeding and on the brain expression levels of tyrosine hydroxylase, mechanistic target of rapamycin and appetite-related hormones by Penney, Carla C, Volkoff, Hélène

“…Highlights • CCK injections decreased feeding and apelin brain expression. • Apelin injections increased feeding and TH, mTOR and orexin brain expressions. •…”
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Irisin in goldfish (Carassius auratus): Effects of irisin injections on feeding behavior and expression of appetite regulators, uncoupling proteins and lipoprotein lipase, and fasting-induced changes in FNDC5 expression by Butt, Zahndra Diann, Hackett, Jessica Dalton, Volkoff, Hélène

“…•Peripheral injections of irisin inhibits feeding in goldfish.•Irisin affects the expressions of brain orexin, CART, BDNF and UCP2, muscle UCP2 and intestine…”
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The comparative endocrinology of feeding in fish: Insights and challenges by Hoskins, Leah J, Volkoff, Hélène

“…Highlights ► Studying the endocrine regulation of food intake in fish can be challenging. ► Few species have been examined. ► Mechanisms of feeding regulation…”
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Interactions between orexin A, NPY and galanin in the control of food intake of the goldfish, Carassius auratus by Volkoff, Helene, Peter, Richard Ector

“…The neuropeptides orexin A (OXA), neuropeptide Y (NPY) and galanin (GAL) have been shown to play a role in the regulation of food intake in mammals. They also…”
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Characterization of the endocrine, digestive and morphological adjustments of the intestine in response to food deprivation and torpor in cunner, Tautogolabrus adspersus by Hayes, James, Volkoff, Hélène

“…The cunner, Tautogolabrus adspersus, is a marine teleost endemic to the cold waters of the Northwest Atlantic Ocean. The cunner is non-migratory and is known…”
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Effects of fasting on the gene expression of appetite regulators in three Characiformes with different feeding habits (Gymnocorymbus ternetzi, Metynnis argenteus and Exodon paradoxus) by Butt, Zahndra Diann, O'Brien, Erin, Volkoff, Hélène

“…In order to assess potential interspecific differences in the endocrine mechanisms regulating feeding in Characiformes, we used three fish species with…”
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