Diagnosis of the multiple effect of selenium nanoparticles decorated by Asteriscus graveolens components in inhibiting HepG2 cell proliferation

Using plant bio-components for Designing green metal nanoparticles was considered as one of the most important methods in nanomedical application field due to their eco-friendly, cheap source, easily obtainable and having a high detection result. In this report, we fabricated eco-friendly engineering and cost-effective technique for green selenium nanoparticles from 0.01 M H₂SeO₃ solution using Asteriscus graveolens leaves extract as reducing and a capping agent at ambient temperature. Spectral techniques have been used to identify the formatted Selenium nanoparticles such as UV–Vis, pH, XPs, FT-IR, XRD, LDS, Z.P, EDS, TEM and AFM spectroscopy, which showed a size of 20 nm with spherical shape. Herein, the multi-effect of decorated Se-NPs surface have been evaluated, firstly on the hemolysis that showed completely hemocompatibility. Cytotoxicity assay showed that Se-NPs have a high selective effect on the HepG2 apoptosis and which proved by phase-contrast microscopy. Furthermore, the effect of nanoparticles on the action of the mechanism internal revealed that Se-NPs significantly and rapidly increased the level of reactive oxygen species and lipid peroxidation, while caused decreased the potential of mitochondrial membrane and glutathione level, which they together responsible on regulating the HepG2 cells fate. Furthermore, Flow cytometry analysis gave high values about S and G2/M phases of cell cycle resulting from Se-NPs effectiveness. In the end, with all the recorded information that has been measured in this study, this report provides a suitable and effective pathway for the green fabrication of Se-NPs decorated by biomolecules having high anticancer inhibited.     

甲状腺素钠联合硒酵母片对甲状腺功能减退症患者的有效性及对血管内皮功能的影响

目的探讨甲状腺素钠联合硒酵母片对甲状腺功能减退症患者的有效性及血管内皮功能的影响。方法选取2017年3月～2018年3月期间我院收治的甲状腺功能减退症的90例患者作为研究对象,根据治疗方式的不同分为研究组与对照组,各45例。对照组采用甲状腺素钠治疗,研究组患者采用甲状腺素钠联合硒酵母片治疗。比较两组患者甲状腺抗体的相关指标,血管内皮功能的相关指标以及出现的不良反应情况等。结果治疗前后两组患者甲状腺抗体的相关指标无显著差异(P0.05),治疗后研究组患者改善程度与对照组比较明显较好;研究组患者的AT-Ⅲ及HDL-C水平与对照组比较显著较高,而TC、CRP、LDL-C以及FIB水平与对照组相比显著降低(P0.05);研究组患者不良反应的总发生率与对照组相比明显降低(P0.05)。结论甲状腺功能减退症的患者采用甲状腺素钠与硒酵母片联合治疗,有助于促进患者甲状腺功能以及血管内皮功能的改善,同时不良反应的情况较少,安全可靠,对预后有积极的促进作用。     

Total antioxidant status reduction conditioned by a serum selenium concentration decrease as a mechanism of the ultrasonographically measured brachial artery dilatation impairment in patients with arterial hypertension

The objective of the study was to determine the relationship between serum concentrations of selenium (SeS) and zinc (ZnS), total antioxidant status (TAS) and endothelial function assessed by ultrasonographic method of dilatation of the brachial artery in 141 hypertensive patients.Patients with SeS < median were characterized by a statistically significantly lower flow-mediated dilation (FMD) than patients with SeS ≥ median. Patients with TAS < median were characterized by a significantly lower FMD than patients with TAS ≥ median. Older age, higher BMI, male gender, higher blood total cholesterol, ischemic heart disease, smoking and lower SeS constitute independent predictors of inferior endothelial function, expressed in lower FMD values. Smoking is an independent predictor of lower TAS, and the use of β-blockers and higher serum selenium levels are independent predictors of higher TAS.In summary, a decrease in TAS should be considered as a mechanism of inferior endothelial function in hypertensive patients conditioned by a decrease in SeS.     

Lithium disturbs homeostasis of essential microelements in erythrocytes of rats: Selenium as a protective agent?

Background

Selenium is an essential element which shows protective properties against diverse harmful factors. Lithium compounds are widely used in medicine, but, in spite of undoubted beneficial effects, treatment with these compounds may lead to severe side effects, including renal, gastrointestinal, neurological, endocrine and metabolic disorders. This study was aimed at evaluating the influence of selenium and/or lithium on lithium, iron, zinc and copper content in rats’ erythrocytes as well as estimate the action of additional selenium on lithium exposure effects.

富硒灵芝对妊娠期糖尿病大鼠脂代谢的调节作用

【摘要】 目的 探讨富硒灵芝对妊娠期糖尿病（GDM）大鼠脂代谢的作用,为富硒灵芝可安全用于孕妇提供参考依据。 方法 选取100只SD大鼠（20只雄性,80只雌性）,随机选取12只雌鼠作为正常组,其余68只雌鼠给予高脂饲料喂养8周后,将雄鼠与雌鼠按1∶4同笼过夜,次日确定妊娠后的所有高脂饲料喂养的雌鼠给予腹腔注射链脲佐菌素 (STZ,35 mg/kg)制备GDM模型,模型构建成功后,将其随机分为模型组、盐酸二甲双胍组,以及富硒灵芝（低、中和高剂量）组,每组各12只。分别于治疗0、7 d和处死前尾静脉取血法收集大鼠血糖,检测血糖变化,药物治疗14 d后处死,收集血液检测血脂［总胆固醇（TC）、甘油三酯（TG）、高密度脂蛋白（HDL-C）、低密度脂蛋白（LDL-C）］及肝功能［天门冬氨酸氨基转移酶（AST）、丙氨酸氨基转移酶（ALT）］,收集肝脏组织采用苏木精-伊红（HE）染色检测肝脏病理学,酶联免疫吸附法（Elisa）检测肝脂,同时蛋白免疫印迹法（Western Blot）检测肝脏脂代谢酶固醇原件调节蛋白-1c（SREBP-1c）、乙酰辅酶A羧化酶α（ACCα）、硬脂酰辅酶A去饱和酶1（SCD1）和过氧化物酶体增殖物激活受体α（PPARα）蛋白表达特点。 结果 HE染色结果可见正常组肝细胞清晰可见,纹理清晰,模型组则呈明显脂肪颗粒浸润,与模型组相比,各治疗组均有一定好转;与正常组相比,模型组AST、ALT、TC、TG和LDL-C明显升高 (P＜0.05),HDL-C明显降低(P＜0.05),富硒灵芝和盐酸二甲双胍组均可以明显降低AST、ALT、TC、TG和LDL-C含量（P＜0.05）,升高HDL-C (P＜0.05);与正常组相比,模型组血糖明显升高 (P＜0.05),与模型组相比,在治疗1周和2周后,盐酸二甲双胍组血糖明显降低 (P＜0.05),治疗第14天,富硒灵芝高剂量组血糖低于模型组 (P＜0.05);与正常组相比,模型组肝脏组织中SREBF1 及 ACCα 蛋白表达明显升高 (P＜0.05),SCD和PPARα明显降低 (P＜0.05),与模型组相比,各治疗组均改善 (P＜0.05)。 结论 富硒灵芝对妊娠期糖尿病大鼠脂代谢具有明显的调节作用,今后或许可用于妊娠期糖尿病孕妇的辅助治疗。     

2型糖尿病患者血清硒和谷胱甘肽过氧化物酶与清蛋白尿的相关性研究

目的探讨2型糖尿病（T2DM）患者血清硒（Se）和谷胱甘肽过氧化物酶（GSH—Px）与清蛋白尿的关系。方法分别采用原子吸收分光光度法和ELISA法检测76例伴微量清蛋白尿（A组）和184例伴正常清蛋白尿（B组）的T2DM患者及60例正常体检者（对照组）的血清Se与GSH-Px水平，并进行比较分析。结果与对照组相比，A组和B组的血清硒水平明显降低，差异有统计学意义，均P〈0．01（t=5．660，4．511），而A组与B组间的血清Se水平差异无统计学意义，P〉0．05（t=1．348）。A组患者血清GSH-Px水平明显低于B组和对照组，差异有统计学意义，均P〈0．01（t=6．545，7．040），但B组和对照组间差异无统计学意义，P〉0．05（t=1．755）。尿清蛋白排泄率（UAER）水平与血清Se（1=-0．212，P〈0．05）和GSH-Px（γ=-0．163，P〈0．05）呈显著负相关。结论低水平的血Se与GSH-Px与T2DM肾病发生、发展密切相关。     

孕期硒营养状况对母婴结局的影响

硒是机体生长发育及代谢所必需的元素,孕期硒营养不良可能会对妊娠结局产生不良影响,因此孕妇保持适宜的硒营养状态是非常重要的。但目前针对孕妇硒营养状态的评估方法及孕期是否需要常规补硒尚未达成共识,尚需更多更深入的研究提供依据。本文就孕期硒营养状况对母婴结局的影响作一述评,旨在为临床提供一定的参考。