首页> 外文期刊>European Chemical Bulletin >BENEFICIAL EFFECTS OF HYPOTHALAMIC PROLINE-RICH PEPTIDE-1 ON THE HEART FAILURE ASSOCIATED WITH EXPERIMENTAL PANCREATIC NECROSIS AND CRUSH SYNDROME
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BENEFICIAL EFFECTS OF HYPOTHALAMIC PROLINE-RICH PEPTIDE-1 ON THE HEART FAILURE ASSOCIATED WITH EXPERIMENTAL PANCREATIC NECROSIS AND CRUSH SYNDROME

机译:下丘脑富含脯氨酸的肽-1对实验性胰腺坏死和粉碎综合征所致心力衰竭的有益作用

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Hypothalamic neurosecretory cytokine, proline-rich peptide-1 (PRP-1) may protect against myocardial dysfunction and hypocalcemia induced by experimental pancreatic necrosis (PN) and/or crush syndrome (CS). 24 and 48 h after initiation of experimental PN, effective doses of PRP-1 were administered to adult Wistar male rats divided into groups corresponding to early, reparative, chronic, and chronic recurrent stages of PN. Similarly age and sex matched rats were immediately administered PRP-1 after 2 h of compression injury. The PRP-1 normalized the histopathological changes in cardiac tissues in the dynamics of both PN and CS. Study of 45 Ca ++ binding to the membrane proteins of cardiomyocyte sarcoplasmic reticulum (SR) showed that PRP-1 could prevent an impairment in the calcium binding ability of the Ca 2+ depot proteins caused under pathological conditions. Besides, PRP-1 suppresses a PN and/or CS-induced compensatory manifestation the affinity to calcium of the 32-kDa SR membrane protein and restores its native properties. The results highlight new prospects over the functional implications of PRP-1 and its possible therapeutic potential for the treatment of patients at high risk of cardiovascular disease associated with different pathologies.
机译:下丘脑神经分泌细胞因子,富含脯氨酸的肽1(PRP-1)可以预防由实验性胰腺坏死(PN)和/或挤压综合征(CS)引起的心肌功能障碍和低钙血症。实验性PN开始后24和48 h,将有效剂量的PRP-1给予成年Wistar雄性大鼠,分为对应于PN早期,修复,慢性和慢性复发阶段的组。同样,年龄和性别相匹配的大鼠在压迫损伤2小时后立即给予PRP-1。 PPN-1使PN和CS动力学中的心脏组织病理学变化正常化。 45 Ca ++与心肌细胞质网(SR)膜蛋白结合的研究表明,PRP-1可以防止在病理条件下引起的Ca 2+贮库蛋白的钙结合能力受损。此外,PRP-1抑制PN和/或CS诱导的代偿性表现,即32 kDa SR膜蛋白对钙的亲和力并恢复其天然特性。该结果突出了关于PRP-1的功能含义及其在治疗与不同病理相关的高风险心血管疾病患者中可能的治疗潜力的新前景。

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