Antioxidative and in vitro hepatoprotective activity of Bupleurum kaoi leaf infusion

The roots of Bupleurus spp. have been used in traditional Chinese herbal medicine for curing liver diseases. Although bioactive saikosaponins have been detected in the leaves as well as in the roots, the aerial parts of the plants are discarded as waste. In the present study, a leaf infusion of B. kaoi Liu, Chao et Chuang, an indigenous Bupleurus species in Taiwan, was prepared and the antioxidant properties and in vitro hepatoprotective activity were demonstrated. The results show that the leaf infusion exerted DPPH free radical scavenging activity, inhibitory capacity on superoxide anion formation and superoxide anion scavenging activity. The hepatotoxicity of acetaminophen (APAP) and carbon tetrachloride (CCl4) on the rat liver cells were also decreased by the leaf infusion.     

Effect of irisin on endometrial receptivity of rats with polycystic ovary syndrome

Abstract

To investigate the influence of irisin on endometrial receptivity of rats with polycystic ovarian syndrome (PCOS). PCOS rats were randomly divided into PCOS group and irisin group, and normal rats were used as control group. The PCOS group and control group were injected intraperitoneally with normal saline while the irisin group with recombinant irisin. The serum and uterus were obtained. Detect serum sex hormones, including Testosterone (T), Estradiol (E₂), Progesterone (P), and glucose, insulin levels. Observe endometrial morphology by hematoxylin-eosin staining. Then evaluate the expression of leukemia inhibitory factor (LIF) and integrin αvβ3 in endometrium using ELISA, immunohistochemistry and Real-time PCR. (1) Levels of serum T, glucose and insulin in PCOS group were significantly higher than those in control and irisin group. (2) For the endometrial morphology, levels of equivalent diameter, area of uterine glands and gland cavity and endometrial average thickness were lower in PCOS group than those in control and irisin group. (3) LIF and integrin αvβ3 mRNA were basically consistent with protein expression. Levels of LIF and integrin αvβ3 were decreased in PCOS group when compared with control and irisin group. Irisin may improve endometrial receptivity by promoting expression of LIF and integrin αvβ3.     

坤泰胶囊联合黄体酮对围绝经期功能失调性子宫出血患者性激素水平的影响

目的 探讨坤泰胶囊联合黄体酮对围绝经期功能失调性子宫出血患者性激素水平的影响。方法 126例围绝经期功能失调性子宫出血患者随机分为两组各63例,对照组采用黄体酮治疗,观察组采用坤泰胶囊联合黄体酮治疗,比较两组治疗前后的肾阴虚证症状评分及性激素水平。结果 治疗3个月后,观察组的盗汗、失眠、腰膝酸软、耳鸣、五心烦热评分均显著低于对照组（P <0.05）。治疗3个月后,观察组的血清FSH、 LH水平均显著低于对照组,E2水平显著高于对照组（P <0.05）。结论 坤泰胶囊联合黄体酮可有效改善围绝经期功能失调性子宫出血患者的肾阴虚证症状,调节患者的性激素水平。     

局部注射曲安奈德联合左甲状腺素钠治疗桥本甲状腺炎的效果

目的 探讨局部注射曲安奈德联合左甲状腺素钠治疗桥本甲状腺炎的效果。方法 选取2018年5月至2020年5月辽阳市中心医院新城医院收治的120例桥本甲状腺炎患者作为研究对象,采用随机数字表法将其分为对照组与观察组,每组各60例。对照组患者给予左甲状腺素钠治疗,观察组患者在对照组的基础上加用局部注射曲安奈德治疗。比较两组患者连续治疗12周后的疗效、甲状腺指标、血清内脂素、细胞因子表达水平及不良反应发生情况。结果 观察组患者的临床总有效率高于对照组,差异有统计学意义（P<0.05）。观察组患者治疗后的促甲状腺激素（TSH）、甲状腺球蛋白抗体（TGAb）、甲状腺微粒体抗体（TMAb）、血清内脂素、重组分化蛋白簇195(CD195)及重组分化蛋白簇30(CD30)均低于对照组,血清游离三碘甲状腺原氨酸（FT3）及血清游离甲状腺素（FT4）高于对照组,差异有统计学意义（P<0.05）。两组患者不良反应总发生率比较,差异无统计学意义（P>0.05）。结论 在左甲状腺素钠治疗桥本甲状腺炎的基础上加用局部注射曲安奈德可更好地缓解临床症状及体征,调节甲状腺相关指标,改善血清内脂素及细胞因...     

左室压力-应变环定量评估蒽环类药物化疗对乳腺癌患者左室功能的影响

目的 应用无创左室压力-应变环(PSL)获取接受蒽环类药物化疗的乳腺癌患者左室心肌做功参数,评价蒽环类化疗药物对左室功能的影响.方法 选取乳腺癌术后接受蒽环类药物化疗患者30例(乳腺癌组)和正常健康志愿者30例(对照组),乳腺癌组分别于化疗前1 d(T0)及下一周期化疗前1 d(T1、T2、T3、T4、T5)行超声心动...     

骨化三醇治疗桥本甲状腺炎的临床效果

目的 探讨骨化三醇治疗桥本甲状腺炎的临床效果。方法 选取辽阳市中心医院新城医院2019年1月至2021年1月收治的110例桥本甲状腺炎患者,采取随机数字表法分为对照组与观察组,各55例。对照组给予左旋甲状腺素片治疗,观察组在对照组的基础上加用骨化三醇治疗。比较两组的临床疗效、治疗前后甲状腺激素指标、抗甲状腺球蛋白抗体（TGAb）、抗甲状腺过氧化物酶抗体（TPOAb）浓度水平,同时观察治疗期间的不良反应。结果 观察组的临床总有效率高于对照组,差异有统计学意义（P<0.05）。观察组治疗后的游离三碘甲状腺原氨酸（FT3）、游离甲状腺素（FT4）水平高于对照组,促甲状腺激素（TSH）水平、TGAb及TPOAb浓度均低于对照组,差异有统计学意义（P<0.05）。两组治疗期间均未出现血常规、尿常规、肝肾功能指标病变等不良反应。结论 在左旋甲状腺素片的基础上加用骨化三醇治疗桥本甲状腺炎,可获得显著的临床疗效,能够促进甲状腺激素水平改善,调节TgAb、TPOAb浓度,且治疗期间无明显不良反应,安全性较高。     

Biocompatibility assessment of nanomaterials for environmental safety screening

In view of the extensive use of nanoparticles in countless applications, a fast and effective method for assessing their potential adverse effects on the environment and human health is extremely important. At present, in vitro cell‐based assays are the standard approach for screening chemicals for cytotoxicity because of their relative simplicity, sensitivity, and cost‐effectiveness compared with animal studies. Regrettably, such cell‐based viability assays encounter limitations when applied to determining the biological toxicity of nanomaterials, which often interact with assay components and produce unreliable outcomes. We have established a cell‐impedance‐based, label‐free, real‐time cell‐monitoring platform suitable for use in a variety of mammalian cell lines that displays results as cell index values. In addition to this real‐time screening platform, other traditional cytotoxicity assays were employed to validate cytotoxicity assessments. We suggest that the cell impedance measurement approach is effective and better suited to determining the cytotoxicity of nanomaterials for environmental safety screening. © 2016 Wiley Periodicals, Inc. Environ Toxicol 32: 1170–1182, 2017.     

化红胶囊对去势大鼠骨质疏松的影响

目的:探讨化红胶囊对去势大鼠骨质疏松的影响及作用机制。方法:取3月龄SD雌性大鼠经去势手术或者是假阳性手术后,喂以去大豆特殊饲料7周以诱导骨丢失。经去势手术大鼠进一步分为化红胶囊组(1.0,0.5,0.25 g.kg-1)、模型组、己烯雌酚组,连续给药12周。检测大鼠血清的骨钙素、雌二醇、尿中脱氧吡啶啉含量,以及椎骨末端骨小梁的变化情况。结果:化红胶囊能降低大鼠血清中骨钙素以及尿液中脱氧吡啶啉含量,提高血清中雌二醇含量,与模型组相比,1.0g.kg-1,0.5 g.kg-1剂量组差异有显著性(P<0.05或P<0.01)。骨小梁的形态学观察及数据分析显示,与模型组相比,化红胶囊可以提高骨小梁面积百分比,与模型组相比,1.0,0.5 g.kg-1剂量组差异有显著性(P<0.05或P<0.01)。结论:化红胶囊可以降低去势大鼠骨转换率和骨吸收程度,提高骨小梁平均面积百分比,是一种潜在的治疗绝经后骨质疏松药物,其作用机制之一可能与化红胶囊雌激素样作用有关。     

Exposure to PM2.5 causes genetic changes in fetal rat cerebral cortex and hippocampus

PM_2.5 travels along the respiratory tract and enters systemic blood circulation. Studies have shown that PM_2.5 increases the incidence of various diseases not only in adults but also in newborn infants. It causes chronic inflammation in pregnant women and retards fetal development. In this study, pregnant rats were exposed to PM_2.5 for extended periods of time and it was found that PM_2.5 exposure increased immune cells in mother rats. In addition, cytokines and free radicals rapidly accumulated in the amniotic fluid and indirectly affected the fetuses. The authors collected cerebral cortex and hippocampus samples at E18 and analyzed changes of miRNA levels. Expression levels of cortical miR‐6315, miR‐3588, and miR‐466b‐5p were upregulated, and positively correlated with the genes Pkn2 (astrocyte migration), Gorab (neuritogenesis), and Mobp (allergic encephalomyelitis). In contrast, PM_2.5 decreased expression of miR‐338‐5p and let‐7e‐5p, both related to mental development. Further, PM_2.5 exposure increased miR‐3560 and let‐7b‐5p in the hippocampus, two proteins that regulate genes Oxct1 and Lin28b that control ketogenesis and glycosylation, and neural cell differentiation, respectively. miR‐99b‐5p, miR‐92b‐5p, and miR‐99a‐5p were decreased, leading to reduced expression of Kbtbd8 and Adam11 which reduced cell mitosis, migration, and differentiation, and inhibited learning abilities and motor coordination of the fetus. © 2016 Wiley Periodicals, Inc. Environ Toxicol 32: 1412–1425, 2017.