The therapeutic effect of Balanophora polysaccharide on acetic acid gastric ulcer in rats and its mechanism; [蛇 ? 多糖对大鼠乙酸型胃溃疡的治疗作用 ? 机制]北大核心CSCD

Aim To study the therapeutic effect of Balanophora polysaccharide(BPS)on gastric ulcer(GU)induced by acetic acid in rats and to investigateits mechanisms. Methods Sixty male SD rats were randomly divided into sham-operated group, GU model group, omeprazole positive group(3.6 mg·kg-1), and low, medium and high dose of BPS treatment groups(100, 200 and 400 mg·kg-1). The GU model group was prepared by acetic acid cautery method, and the morphology and pathological changes of ulcers were observed by visual observation combined with HE staining, and the ulcer area and inhibition rate were measured and calculated; superoxide dismutase(SOD)activity, malondialdehyde(MDA)content and glutathione peroxidase(GSH-PX)activity were measured by enzymatic assay; tumor necrosis factor-α(TNF-α)and interleukin-6(IL-6)content were detected by ELISA. The expression levels of epidermal growth factor(EGF)and epidermal growth factor receptor(EGFR)were measured by immunohistochemistry staining and Western blot. Results Compared with the sham-operated group, obvious ulcer damage was seen in the model group. Compared with the model group, the BPS-treated group showed a significant reduction in ulcer area, an increase in SOD and GSH-PX activity and EGF and EGFR expression levels, and a significant decrease in MDA, TNF-α and IL-6 content. Conclusions BPS has a therapeutic effect on GU in rats, and its mechanism may be related to the inhibition of oxidative stress, suppression of inflammatory stimuli and promotion of regenerative repair of gastric mucosa. © 2023 Publication Centre of Anhui Medical University. All rights reserved.     

肠外营养的结肠疾病围手术？…

本文报告将肠外营养应用于７例结肠疾病围手术期病人，作者探讨了结肠疾病围手术期营养支持的必要性和指征：（１）择期手术病人伴有营养不良，体重在３个月或半年内下降原体重１０％或１５％以上，白蛋白３５ｇ／Ｌ以下；（２）术前因营养不良而给予营养支持，术后继续应用直至恢复正常口服饮食者；（３）术后７天以上不能恢复正常口服饮食者；（４）术前因某些原因未进行营养支持，术后短期内不能获得足够的营养；（５）术后发生并     

蛇菰多糖通过SLC7A11/GPX4通路减轻细胞铁死亡改善大鼠实验性肝损伤

蛇菰多糖(polysaccharide of Balanophora involucrata Hook.f.,BPS)是土家民族药筒鞘蛇菰的主要活性成分之一,前期已证实具有保肝护肝作用。本研究旨在深入探讨BPS对实验性肝损伤的保护作用机制,可能与影响溶质载体家族7成员11/谷胱甘肽过氧化物酶4 (solute carrier family 7 member 11/glutathione peroxidase 4,SLC7A11/GPX4)通路减轻肝细胞铁死亡有关。本实验方案经湖北民族大学实验动物伦理委员会审查,符合实验动物福利与伦理原则。实验采用一次性腹腔注射D-氨基半乳糖溶液(D-galactosamine,D-Gal N,800 mg·kg^-1)建立急性肝损伤模型,根据前期研究给予200 mg·kg^-1 BPS溶液灌胃干预,以铁死亡抑制剂去铁胺(desferrioxamine,DFO)为对照。结果表明,BPS干预可明显降低大鼠血清谷草转移酶(aspartate amino transferase,AST)和谷丙转移酶(alanine am...