共查询到19条相似文献,搜索用时 109 毫秒
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目前,肥胖在全球以惊人的速度增加,同时也是全人类面临的主要健康问题之一。研究者对于肥胖的研究进展是相当缓慢的,因为目前对肥胖的研究主要是以鼠作为动物医学模型,然而人与鼠之间在生理学上存在许多差异,比如脂肪酶、来普汀、抵抗素、肿瘤抑制因子α和其他细胞因子,从而很难将鼠的研究结果应用到人类身上。因此,研究者对发展另外一种动物医学研究模型非常地感兴趣,猪作为一种特殊的模型正快速地成为研究人类能量代谢和肥胖的生物医学模型,因为猪在出生后棕色脂肪会消失,具有与人类相似的代谢特征、心血管系统和适当的器官大小。本文综述了猪作为动物医学模型来研究肥胖和代谢综合征得到的结果,并与人进行了比较,特别强调了脂肪组织和细胞因子在调节能量平衡和肥胖相关炎症上的作用。 相似文献
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抵抗素引起胰岛素抵抗机制的研究进展 总被引:3,自引:0,他引:3
抵抗素是存在于血浆中的富含半胱氨酸的分泌性蛋白,其分子内二硫键的形成对于维系它的空间构象及生物活性非常重要.许多报道认为抵抗素可以引起胰岛素抵抗,它的发现为与胰岛素抵抗相关的疾病肥胖和2型糖尿病提供了一个新的研究方向,但其引起胰岛素抵抗的机制至今不是很明确.文章介绍了抵抗素的结构特点及其引起胰岛素抵抗的机制. 相似文献
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近年来,肥胖已经成为影响犬猫健康的瓶颈问题。目前已有研究证明,肠道微生物与犬猫肥胖相关。肠道微生物群落改变会导致肥胖的发生,发病机制比较复杂,可能与肠道微生物群落改变导致的能量代谢失衡、炎症反应以及肠道微生物代谢产物相关。有些不确定饮食干预调控肠道微生物可实现对犬猫肥胖的有效治疗。本文从肠道微生物与犬猫肥胖、肠道微生物在肥胖中的作用机制、饮食干预对肥胖犬猫肠道微生物的影响以及微生物在犬猫肥胖防控中的应用4个方面进行综述,以期为解决犬猫肥胖问题提供参考。 相似文献
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脂多糖(LPS)是革兰阴性菌细胞壁的主要成分,广泛存在于环境中,可诱导机体炎症反应,与奶牛的多种疾病相关。环境和疾病等因素引起机体LPS水平升高,LPS与巨噬细胞、中性粒细胞和上皮细胞等作用,激活NF-κB和MAPKs信号通路,释放炎症因子,改变机体糖脂代谢相关激素和脂肪因子水平,进而影响糖脂代谢,造成奶牛2型糖尿病、酮病、脂肪肝和肥胖等代谢性疾病。本文综述了LPS与炎症反应和糖脂代谢相互作用关系及其导致糖脂代谢异常作用机制,为LPS致奶牛糖脂代谢异常机理研究提供参考。 相似文献
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根据一项发表在《临床实践中的补充疗法》(Journal Complementary Therapies in ClinicalPractice)的研究发现,石榴可以降低肥胖并发症的风险。伊朗和澳大利亚的联合研究小组开展了此项研究,确定了石榴提取物对肥胖并发症的潜在功效。肥胖是一种以人体脂肪过多为特征的疾病,不利于人体健康。与肥胖相关的并发症包括II 型糖尿病、心脏病、高血压、中风、胆囊疾病、脂肪肝、高胆固醇和睡眠呼吸暂停等呼吸疾病。研究人员以超重和肥胖人群为研究对象,测试了石榴提取物对该人群的血浆炎症和氧化应激生物标志以及血清代谢特征的影响。 相似文献
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代谢综合征是多种代谢性疾病的总称,包括肥胖、血脂异常、葡糖耐受不良、炎症和高血压.近年许多研究表明,PPAR可以改善这类代谢异常情况.PPARs是细胞核激素受体超家族配体激活转录因子,分为PPARα、PPARβ/δ、PPARγ三个亚型,分布在各不同组织,功能涵盖广泛. 相似文献
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转录因子E2相关因子2(Nrf2)是细胞重要的调节抗氧化应激的转录因子,其活性状态与病毒感染引起的炎症及免疫清除相关.为研究Nrf2对马传染性贫血病毒(EIAV)复制的影响,本研究通过CRISPR在线设计工具,靶向于Nrf2设计2条特异性sgRNAs,经程序性退火后连接到LentiCRISPRv2-GFP载体中构建重组... 相似文献
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Transcriptional regulation of the resistin gene 总被引:2,自引:0,他引:2
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Cloning and characterization of porcine resistin gene 总被引:5,自引:0,他引:5
Dai MH Xia T Chen XD Gan L Feng SQ Qiu H Peng Y Yang ZQ 《Domestic animal endocrinology》2006,30(2):88-97
Resistin is a member of resistin-like molecules (RELMs) and a hormone secreted from mature adipocytes in rodents and leukocytes in human. We now report the cloning and characterization of the full-length porcine resistin cDNA and gene. Sequence analysis indicated that the pig resistin cDNA sequence had an open reading frame of 330 bp encoding a 12 kDa protein of 109 amino acids. The deduced amino acid sequence showed 75.2% identity to the human resistin. The porcine resistin gene was composed of four exons and had exactly the same exon structure as the human resistin gene. The tissue distribution of porcine resistin mRNA was assessed by semi-quantitative RT-PCR. Resistin gene expression was the highest in porcine leukocytes and low in adipose tissue. Resistin protein could be detected in porcine serum by western blotting and it circulated in serum as dimers and trimers. We provided the first evidence that resistin was abundantly expressed in porcine leukocytes and had an expression pattern similar to that in human resistin mRNA and protein. This suggests that the pig may be a suitable animal model for studying the function of resistin in human insulin resistance. 相似文献
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用纯化的可溶性重组resistin蛋白免疫健康家兔,制备抗血清,优化ELISA各反应条件(如工作浓度、温育时间、特异性试验),初步建立了检测猪resistin蛋白的间接ELISA方法。结果表明抗原、抗体最佳工作浓度为1∶200和1∶400,resistin最低检出限量为193.75 ng/ml;抗原和一抗、一抗和二抗的最适温育时间均为60 min。本试验建立的ELISA方法,具有灵敏度较高,特异性较好的特点,可作为猪组织和血清中resistin蛋白的检测方法。 相似文献
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取单层培养72 h生长良好的犊牛肝细胞,采用单因素重复试验,分别添加0、25、50、100、200、400 ng/L的牛重组抵抗素(resistin),每个处理3个重复(每重复2孔).继续培养12 h后分别提取RNA并制备细胞上清液.应用荧光定量PCR方法检测牛重组Resistin对肝细胞糖异生关键酶丙酮酸羧化酶(Pyruvate carboxylase,PC)基因表达的影响,同时用比色法检测其对肝细胞PC酶活性的影响.结果表明,一定浓度的resistin显著下调了肝细胞PCmRNA表达,且降低了PC酶活性. 相似文献
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S O'Neill K Drobatz E Satyaraj R Hess 《Veterinary immunology and immunopathology》2012,148(3-4):276-283
In human beings, diabetes mellitus (DM) and diabetic ketoacidosis (DKA) are recognized as proinflammatory states and dysregulation of cytokines has been linked to some potentially fatal complications. Cytokine profiles of dogs with DM or DKA have not been reported. The objectives of this study were to compare cytokine and hormone concentrations in dogs with DKA before and after resolution of ketoacidosis, to compare these concentrations before treatment of DKA to those measured in dogs with uncomplicated DM and healthy dogs, and to compare concentrations in dogs with uncomplicated DM to those measured in healthy dogs. 27 dogs were included in this prospective clinical study. 18 dogs had naturally-occurring disease (9 DKA and 9 DM) and 9 dogs were healthy. Serum GMCSF, IL-2, IL-4, IL-6, IL-7, CXCL8, IL-10, IL-15, IL-18, IFNγ, IP-10, TNFα, Monocyte Chemoattractant Protein-1 (MCP-1), Keratinocyte Chemoattractant (KC), glucagon, leptin, adiponectin, and resistin were assayed using Milliplex MAP Canine kits.(2)(,)(3) IL-18, resistin, and GMCSF concentrations were significantly higher in dogs with DKA before treatment compared to after resolution of ketoacidosis. CXCL8, MCP-1, KC, and resistin were significantly higher in DKA dogs compared to healthy controls, and KC was also significantly higher in DKA compared to DM dogs. Additionally, CXCL8 and MCP-1 were significantly higher in dogs with DM compared to healthy controls. Significant differences were not detected in concentrations of the other measured analytes, including glucagon. It is concluded that IL-18, resistin, GMCSF, and KC may be involved in the pathogenesis of canine DKA, and their importance in this pathogenesis may be as great as that of glucagon. Dysregulation of CXCL8 and MCP-1 may be involved in the pathogenesis of DM in dogs. 相似文献