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High leptin in pregnant mink (Mustela vison) may exert anorexigenic effects: a permissive factor for rapid increase in food intake during lactation

The role for leptin in food intake regulation in the mink, a polytocous seasonal breeder with altricial young, was investigated in pregnant and lactating dams and data were related to quantitative energy metabolism measurements and plasma concentrations of other important metabolic hormones. A total...

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Published in:British journal of nutrition 2004-03, Vol.91 (3), p.411-421
Main Authors: Tauson, Anne-Helene, Forsberg, Mats, Chwalibog, André
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description The role for leptin in food intake regulation in the mink, a polytocous seasonal breeder with altricial young, was investigated in pregnant and lactating dams and data were related to quantitative energy metabolism measurements and plasma concentrations of other important metabolic hormones. A total of nine mink dams were measured in consecutive 1-week balance periods, each including a 22h measurement of heat production by means of indirect calorimetry, and blood was sampled at weekly intervals throughout gestation and during lactation weeks 1–4. Intake of metabolisable energy (ME) was high and energy balance was positive until the first third of true gestation. During mid- and late gestation ME intake decreased (P
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A total of nine mink dams were measured in consecutive 1-week balance periods, each including a 22h measurement of heat production by means of indirect calorimetry, and blood was sampled at weekly intervals throughout gestation and during lactation weeks 1–4. Intake of metabolisable energy (ME) was high and energy balance was positive until the first third of true gestation. During mid- and late gestation ME intake decreased (P&lt;0·001) while heat production remained almost constant, resulting in negative energy balance and the loss of body weight. From late gestation until lactation week 4, ME intake increased by 3·5 times, but weight loss continued. Plasma concentrations of leptin were approximately doubled during the last two-thirds of true gestation (P&lt;0·01), demonstrating a clear gestational hyperleptinaemia. Concentrations declined rapidly after parturition and then remained stable. Insulin was independent of leptin, with low concentrations coincident with hyperleptinaemia. 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Psychology ; Homeostasis ; Hormones ; Hormones - blood ; Insulin ; Insulin-like growth factor-1 ; Insulin-like growth factors ; Lactation - physiology ; Leptin - physiology ; Metabolism ; Milk production ; Mink - physiology ; Nitrogen - metabolism ; Oxidation ; Oxidation-Reduction ; Pregnancy ; Pregnancy Outcome - veterinary ; Substrate oxidation ; Thyroid ; Thyroid gland ; Thyroid hormones ; Vertebrates: anatomy and physiology, studies on body, several organs or systems ; Weight Gain</subject><ispartof>British journal of nutrition, 2004-03, Vol.91 (3), p.411-421</ispartof><rights>Copyright © The Nutrition Society 2004</rights><rights>2004 INIST-CNRS</rights><rights>The Nutrition Society</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c479t-1d40505ae796a7f959d991684172d4edede7936a398479ab4d767a9cdaacbf8c3</citedby><cites>FETCH-LOGICAL-c479t-1d40505ae796a7f959d991684172d4edede7936a398479ab4d767a9cdaacbf8c3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.cambridge.org/core/product/identifier/S0007114504000546/type/journal_article$$EHTML$$P50$$Gcambridge$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,55664</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&amp;idt=15541262$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/15005827$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Tauson, Anne-Helene</creatorcontrib><creatorcontrib>Forsberg, Mats</creatorcontrib><creatorcontrib>Chwalibog, André</creatorcontrib><title>High leptin in pregnant mink (Mustela vison) may exert anorexigenic effects: a permissive factor for rapid increase in food intake during lactation</title><title>British journal of nutrition</title><addtitle>Br J Nutr</addtitle><description>The role for leptin in food intake regulation in the mink, a polytocous seasonal breeder with altricial young, was investigated in pregnant and lactating dams and data were related to quantitative energy metabolism measurements and plasma concentrations of other important metabolic hormones. 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Also, concentrations of thyroid hormones declined during gestation, probably reflecting the low food intake. Hyperleptinaemia concomitant with low ME intake, negative energy balance and mobilisation of body reserves suggested an anorexigenic effect of leptin in pregnant mink. This suppression of food intake in late gestation might be permissive for the rapid increase in food intake occurring after parturition.</description><subject>Animal lactation</subject><subject>Animals</subject><subject>Appetite - physiology</subject><subject>Biological and medical sciences</subject><subject>Birth Weight</subject><subject>Body weight</subject><subject>Calorimetry</subject><subject>Diet</subject><subject>Eating - physiology</subject><subject>Energy</subject><subject>Energy balance</subject><subject>Energy metabolism</subject><subject>Energy Metabolism - physiology</subject><subject>Feeding. 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source Full-Text Journals in Chemistry (Open access); Cambridge University Press:JISC Collections:Full Collection Digital Archives (STM and HSS) (218 titles)
subjects Animal lactation
Animals
Appetite - physiology
Biological and medical sciences
Birth Weight
Body weight
Calorimetry
Diet
Eating - physiology
Energy
Energy balance
Energy metabolism
Energy Metabolism - physiology
Feeding. Feeding behavior
Female
Fetuses
Food
Fundamental and applied biological sciences. Psychology
Homeostasis
Hormones
Hormones - blood
Insulin
Insulin-like growth factor-1
Insulin-like growth factors
Lactation - physiology
Leptin - physiology
Metabolism
Milk production
Mink - physiology
Nitrogen - metabolism
Oxidation
Oxidation-Reduction
Pregnancy
Pregnancy Outcome - veterinary
Substrate oxidation
Thyroid
Thyroid gland
Thyroid hormones
Vertebrates: anatomy and physiology, studies on body, several organs or systems
Weight Gain
title High leptin in pregnant mink (Mustela vison) may exert anorexigenic effects: a permissive factor for rapid increase in food intake during lactation
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