Adipose tissue lipolysis and remodeling during the transition period of dairy cows

G.Andres Contreras; Clarissa Strieder-Barboza; William Raphael

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Adipose tissue lipolysis and remodeling during the transition period of dairy cows

机译：奶牛过渡期脂肪组织脂解与重塑

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Elevated concentrations of plasma fatty acids in transition dairy cows are significantly associated with increased disease susceptibility and poor lactation performance.The main source of plasma fatty acids throughout the transition period is lipolysis from adipose tissue depots.During this time,plasma fatty acids serve as a source of calories mitigating the negative energy balance prompted by copious milk synthesis and limited dry matter intake.Past research has demonstrated that lipolysis in the adipose organ is a complex process that includes not only the activation of lipolytic pathways in response to neural,hormonal,or paracrine stimuli,but also important changes in the structure and cellular distribution of the tissue in a process known as adipose tissue remodeling.This process involves an inflammatory response with immune cell migration,proliferation of the cellular components of the stromal vascular fraction,and changes in the extracellular matrix.This review summarizes current knowledge on lipolysis in dairy cattle,expands on the new field of adipose tissue remodeling,and discusses how these biological processes affect transition cow health and productivity.

机译：过渡奶牛血浆脂肪酸浓度的升高与疾病易感性和泌乳性能的下降密切相关。整个过渡期内血浆脂肪酸的主要来源是脂肪组织贮库的脂解作用。过去的研究表明，脂肪器官中的脂肪分解是一个复杂的过程，不仅包括响应神经，激素或神经元的脂肪分解途径的活化，还可以缓解因大量牛奶合成和限制干物质摄入而引起的负能量平衡。旁分泌刺激，但在称为脂肪组织重塑的过程中，组织的结构和细胞分布也发生了重要变化。此过程涉及炎症反应，免疫细胞迁移，基质血管部分细胞成分的增殖以及肝素的变化。细胞外基质。关于奶牛脂肪分解的知识，扩展了脂肪组织重塑的新领域，并讨论了这些生物学过程如何影响转基因奶牛的健康和生产力。

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《畜牧与生物技术杂志(英文版)》 |2017年第4期|787-798|共12页
作者
G.Andres Contreras; Clarissa Strieder-Barboza; William Raphael;
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Department of Large Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, East Lansing, MI 48824, USA;

Department of Large Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, East Lansing, MI 48824, USA;

Department of Large Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, East Lansing, MI 48824, USA;

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Adipose tissue lipolysis and remodeling during the transition period of dairy cows

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