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Dietary carnosic acid and seleno-compounds change concentrations of fatty acids, cholesterol, tocopherols and malondialdehyde in fat and heart of lambs

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Animal Nutrition 2021年第3期7卷 812-822页

作者： Malgorzata Bialek Marian Czauderna kamil zaworski Katarzyna Krajewska The Kielanowski Institute of Animal Physiology and Nutrition Polish Academy of Sciences05-110 JablonnaPoland

The aim of the current study was to evaluate the impact of carnosic acid(CA),selenised yeast(^(Y)Se)and selenate(^(VI)Se)supplemented to diets,including fish oil(FO)and rapeseed oil(RO),on the content of fatty acids,total cholesterol(TCh),tocopherols and malondialdehyde in the fat located between the thigh muscles and the heart in ***-four male Corriedale lambs were divided into 4 groups of 6 *** were fed a diet with FO and RO(the control diet)or experimental diets containing RO,FO and CA with/without Se(as^(Y)Se or^(VI)Se).The experimental diets without/with^(Y)Se or^(VI)Se changed concentrations of fatty acids in the fat and heart compared to the *** experimental diets increased the levels of c11c14C20:2,c5c8c11c14C20:4,c5c8c11c14c17C20:5 and the sums of long-chain polyunsaturated fatty acids(LPUFA)and conjugated linoleic acid isomers in the fat compared to the *** experimental diet containing^(Y)Se or^(VI)Se increased the content of Se,TCh,c11c14C20:2,c8c11c14C20:3,c5c8c11c14C20:4,c5c8c11c14c17C20:5,c7c10c13c16c19C22:5,c4c7c10c13c16c19C22:6 and the concentration sum of n-3LPUFA,n-6LPUFA and tocopherols in the heart in comparison with the control diet and the diet containing only *** diets reduced the concentration of malon-dialdehyde in the fat and heart in comparison with the control *** dietary intervention has great potential for future practical and commercial implementations.

关键词： Selenium Carnosic acid Fatty acid Tocopherol Cholesterol Lamb

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Amylase intrapancreatic infusion delays insulin release during an intravenous glucose tolerance test,proof of acini–islet–acinar interactions

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World Journal of Experimental Medicine 2024年第3期14卷 101-107页

作者： Kateryna Pierzynowska Piotr Wychowański kamil zaworski Jarosław Woliński Janine Donaldson Dominika Szkopek Katarzyna Roszkowicz-Ostrowska Agata Kondej Stefan G Pierzynowski Department of Biology Lund UniversityLund 22362Sweden Department of Animal Physiology The Kielanowski Institute of Animal Physiology and NutritionPolish Academy of SciencesJabłonna 05110Poland Anara AB Trelleborg 23132Sweden Department of Head and Neck and Sensory Organs Division of Oral Surgery and ImplantologyInstitute of Clinical DentistryGemelli Foundation for the University PoliclinicCatholic University of the“Sacred Heart”Rome 00168Italy Department of Oral Surgery Medical University of GdańskGdańsk 80211Poland Laboratory of Large Animal Models The Kielanowski Institute of Animal Physiology and NutritionPolish Academy of SciencesJabłonna 05110Poland School of Physiology Faculty of Health SciencesUniversity of the Witwatersrand(WITS)Johannesburg 2050South Africa Department of Medical Biology Institute of Rural HealthLublin 20090Poland

BACKGROUND The possible existence of an acini–islet–acinar(AIA)reflex,involving mutual amylase and insulin interactions,was investigated in the current acute experiment on *** To confirm the existence of an AIA reflex and justify the placement of the exocrine and endocrine pancreatic components within the same *** The study was performed on six pigs under general *** intravenous glucose tolerance test was performed,with a bolus infusion of 50%glucose to the jugular vein,while amylase(5000 U/kg)or vehicle intrapancreatic infusions were administered via the pancreaticoduodenalis cranialis artery during 30 min with a 1 mL/min flow *** The amylase infusion to pancreatic arterial circulation inhibited and delayed the insulin release peak which is usually associated with the highest value of blood glucose and is typically observed at 15 min after glucose infusion,for>1 *** intrapancreatic infusion of the vehicle(saline)did not have any effect on the time frame of insulin *** of 1%bovine serum albumin changed the insulin release curve dramatically and prolonged the high range of insulin secretion,far beyond the glucose *** Intrapancreatic arterial infusion of amylase interrupted the integrated glucose–insulin *** confirms an AIA reflex and justifies placement of the exocrine and endocrine pancreatic components within the same organ.

关键词： Amylase Glucose-insulin-amylase interaction Intravenous glucose tolerance test Acini-islet-acinar axis Insulin

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