کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8318856 | 1539120 | 2018 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Metabolic response to hypoxia in European sea bass (Dicentrarchus labrax) displays developmental plasticity
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کلمات کلیدی
qPCRdiacylglycerol o-acyltransferase 1DGAT1NADPHDPHGLUT2HIFPEPCKRGRDMSO - DMSOEF1α - EF1aAtgl - اتگلDevelopmental plasticity - انعطاف پذیری رشدHIS - خودDimethyl sulfoxide - دیمتیل سولفواکسیدdays post hatching - روز پس از اخاذیreverse transcription - رونویسی معکوسRIN - رینEuropean sea bass - ساحل دریای اروپاHepatosomatic index - شاخص HepatosomaticRNA Integrity Number - شماره یکپارچه RNAHypoxia Inducible Factor - فاکتور قابل تشخیص هیپوکسیPassive integrated transponder - فرستنده یکپارچه منفعلphosphoenolpyruvate carboxykinase - فسفوآنولپیرود کربوکسیکینازadipose triglyceride lipase - لیپاز تری گلیسیرید چربیMetabolism - متابولیسم Relative growth rate - نرخ رشد نسبیnicotinamide adenine dinucleotide phosphate - نیکوتین آمید adenine dinucleotide phosphateHypoxia - هیپوکسیquantitative polymerase chain reaction - واکنش زنجیره ای پلیمراز کمیpyruvate kinase - پیرووات کینازquantification cycle - چرخه محاسبهGlucose transporter-2 - گلوکز مایع 2glycogen synthase - گلیکوژن سنتازGlycogen phosphorylase - گلیکوژن فسفریلاسPit - گودال
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Several physiological functions in fish are shaped by environmental stimuli received during early life. In particular, early-life hypoxia has been reported to have long-lasting effects on fish metabolism, with potential consequences for fish life history traits. In the present study, we examine whether the synergistic stressors hypoxia (40% and 100% air saturation) and temperature (15° and 20 °C), encountered during early life, could condition later metabolic response in European sea bass (Dicentrarchus labrax) juveniles. Growth rate and metabolic parameters related to carbohydrate and lipid metabolism in the liver were investigated at the juvenile stage under normoxic and chronic hypoxic conditions. Juvenile growth rates were significantly lower (p < 1 Ã 10â 6) under hypoxic conditions and were not improved by prior early-life exposure to hypoxia. Growth was 1.3 times higher (p < 5 Ã 10â 3) in juveniles reared at 15 °C during the larval stage than those reared at 20 °C, suggesting that compensatory growth had occurred. Early-life exposure to hypoxia induced higher (p < 2 Ã 10â 6) glycogen stores in juveniles even though there was no apparent regulation of their carbohydrate metabolism. In the liver of juveniles exposed to chronic hypoxia, lower glycogen content combined with stimulation of phosphoenolpyruvate carboxykinase gene expression and higher lactate concentration indicated a stimulation of the anaerobic glycolytic pathway. Furthermore, hypoxia only induced lower (p < 1 Ã 10â 3) lipid content in the liver of juveniles that had experienced 15 °C at the larval stage. The present study provides evidence that environmental conditions experienced during early life shape the metabolic traits of D. labrax with potential consequences for juvenile physiological performance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology - Volume 215, January 2018, Pages 1-9
Journal: Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology - Volume 215, January 2018, Pages 1-9
نویسندگان
Laura Cadiz, José-Luis Zambonino-Infante, Patrick Quazuguel, Lauriane Madec, Herve Le Delliou, David Mazurais,