UPLC-PDA法同时测定复方五凤草液中7种成分

目的建立UPLC-PDA法同时测定复方五凤草液(五凤草、白芨、猫爪草)中没食子酸、原儿茶酸、对羟基苯甲酸、咖啡酸、金丝桃苷、槲皮素、柚皮素的含有量。方法该药物80%甲醇提取液的分析采用Waters BEH C18色谱柱(2.1 mm×100 mm, 1.7μm);流动相乙腈-0.1%甲酸,梯度洗脱;体积流量0.3 mL/min;柱温40℃;检测波长266 nm。结果 7种成分在各自范围内线性关系良好(r≥0.999 5),平均加样回收率96.96%~102.26%,RSD 0.65%~2.10%。结论该方法稳定准确,重复性好,可用于复方五凤草液的质量控制。     

Pharmacological evaluation and mechanistic study of compound Xishu Granule in hepatocellular carcinoma

ObjectiveIn this study, we used HepG2 human hepatocellular carcinoma cells to study the effects of Compound Xishu Granule (CXG) on cell proliferation, apoptosis, and the cell cycle in vitro. We also used a xenograft tumor model to study the anti-tumor effects of CXG and related mechanisms in vivo.MethodsThe effect of CXG on cell viability was measured using Cell Counting Kit-8 and a colony formation assay. The effect of CXG on apoptosis and the cell cycle was analyzed using flow cytometry. The in vivo anti-tumor effect of CXG was assessed by measuring the volume change in xenograft tumors after drug administration. The CXG anti-tumor mechanism was studied using western blotting assay to detect cell cycle and apoptotic associated proteins.ResultsCXG suppressed HepG2 cell proliferation in a time- and dose-dependent manner in vitro. Colony formation experiments showed that CXG administration for 24 h significantly reduced HepG2 cell formations (P < .01). Flow cytometric analysis showed that CXG treatment for 48 h promoted apoptosis and blocked HepG2 cells in the G2/M phase. Western blotting results showed that Bax was significantly up-regulated and Bcl-2 was down-regulated in graft tumor tissues and HepG2 cells after CXG administration, which increased the Bax/Bcl-2 ratio. PLK1, CDC25C, CDK1, and Cyclin B1 expression were up-regulated. CXG had a good inhibitory effect on graft tumor growth in vivo.ConclusionCXG has good anti-tumor effects in vitro and in vivo. In vitro, CXG promoted HepG2 cell apoptosis and induced G2/M phase arrest. In vivo, CXG significantly inhibited graft tumor growth. The CXG mechanism in treating hepatocellular carcinoma may be that CXG can induce abnormal apoptotic and cell cycle associated protein expression, leading to mitotic catastrophe and apoptosis.     

激光联合复方血栓通胶囊治疗糖尿病视网膜病变合并黄斑水肿的疗效观察

目的:分析糖尿病视网膜病变合并黄斑水肿联合采用激光与复方血栓通胶囊治疗的临床疗效。方法:选取我院2017年1月—2019年1月收治的200例糖尿病视网膜病变合并黄斑水肿患者为研究对象,随机分为两组。对照组单独行激光治疗,观察组于对照组基础上联合复方血栓通胶囊治疗,对比两组临床疗效、治疗前后IL-6(白介素-6)、VEGF(血管内皮生长因子)、NOS(血清一氧化氮合成酶)水平变化情况。结果:对照组总有效率(68.00%,68/100)较观察组总有效率(98.00%,98/100)更高(P<0.05);与对照组对比,观察组治疗后NOS水平更高,IL-6、VEGF水平更低(P<0.05)。结论:糖尿病视网膜病变合并黄斑水肿联合采用激光与复方血栓通胶囊治疗的临床疗效显著,值得推广。     

基于“脾胰同源”应用养阴益气活血法减少血糖波动干预糖尿病大血管病变的研究

目的探讨基于"脾胰同源"应用养阴益气活血法观察参芪复方对糖尿病血糖波动的影响。方法建立由高脂饲料喂养的糖尿病大血管并发症大鼠模型,实验分为空白组,模型组,参芪复方组,西药西格列汀组,各组灌胃8周。实验期间观察动物一般状况,在灌胃的第4周每周1次测定1日内5个时间点的血糖情况,并计算MBG、SDBG、LABG值。灌胃8周后处死GK大鼠,检测各组血脂水平、CRP、血清胰岛素、血清胰高血糖素、血清GLP-1,对腹主动脉及胰腺组织进行HE染色后进行病理形态学观察。结果参芪组一般状况优于模型组,血糖波动方面,每日平均血糖标准差(SDBG)和最大血糖波动幅度(LAGE)值优于模型组。甘油三酯(TG)、胆固醇(TC)以及C反应蛋白(CRP)较模型组降低,但与西药组无统计学意义。胰岛素(INS)与胰高血糖素(GC)与模型组相比,无统计学意义;而GLP-1较模型组有显著的差异(P<0.01)。病理方面,参芪组腹主动脉和胰腺切片优于模型组和西药组。结论应用参芪复方可以改善糖尿病大血管病变GK大鼠的一般状态,提高GLP-1的浓度,控制血糖的波动幅度;且可以改善脂代谢紊乱,降低CRP,减轻模型GK大鼠血管内皮损伤,延缓糖尿病大血管病变的进展。     

红藤虎杖复方免煎剂对急性痛风性关节炎模型小鼠细胞因子表达的影响

目的观察红藤虎杖复方免煎剂对急性痛风性关节炎模型小鼠细胞因子的表达,并探讨其可能作用机制。方法将KM雌雄性小鼠各36只,称重后随机分成空白组、模型组、阳性组和中药高、中、低剂量组,正常饲养1周后,连续灌胃5 d,第6天在小鼠踝关节注射尿酸钠诱导急性痛风性关节炎模型。测定足趾容积、HE染色观察滑膜组织病理形态,以及ELISA法检测IL-1β、TGF-β1、TNF-α、IL-1、IL-8、IL-1Ra在踝关节滑膜组织中的表达。结果与空白组比较,模型组右足趾容积明显增加;IL-1、IL-1β、IL-8、TNF-α水平均显著增高(P<0.01);IL-1Ra、TGF-β1较空白组增高(P<0.05)。与模型组比较,阳性组、中药高、中剂量组右足趾容积明显降低;IL-1、IL-1β、IL-8、TNF-α水平均显著性降低(P<0.01);TGF-β1、IL-1Ra水平均显著性增高(P<0.01)。与阳性组比较,中药高剂量组IL-1显著降低((P<0.01);中药高、中剂量组IL-1β、TNF-α较阳性组降低(P<0.05);中药高、中剂量组IL-8、IL-1Ra、TGF-β1与阳性组比较无显著性差异(P>0.05);HE染色观察显示高剂量组滑膜组织炎症浸润改善明显。结论红藤虎杖复方免煎剂能治疗小鼠急性痛风性关节炎,其作用机制可能与MSU诱导的促炎细胞因子及抗炎细胞因子的产生有关,且高剂量效佳。     

Moniletrix of the scalp from almost normal aspect to total alopecia: variable intrafamilial expressiveness

Monilethrix is a rare defect of the hair shaft, with most cases showing an autosomal dominant pattern of inheritance and variable clinical expression. It is characterized by hypotrichosis secondary to hair fragility. The diagnosis is made through trichoscopy, detecting typical findings such as periodic narrowing at regular intervals, giving the hair the appearance of beads in a rosary. This article reports the case of six members of a family diagnosed with monilethrix with alopecia of varying degrees.     

A Phase I Open-Label Clinical Trial Evaluating the Therapeutic Vaccine hVEGF26–104/RFASE in Patients with Advanced Solid Malignancies

Lessons Learned

• The novel therapeutic vaccine hVEGF_26–104/RFASE was found to be safe and well tolerated in patients with cancer.
• hVEGF_26–104/RFASE failed to induce seroconversion against native hVEGF₁₆₅ and, accordingly, neither a decrease in circulating vascular endothelial growth factor (VEGF) levels nor clinical benefit was observed.
• Remarkably, hVEGF_26–104/RFASE induced VEGF₁₆₅-neutralizing antibodies in a nonhuman primate model. The absence of seroconversion in human calls for caution in the interpretation of efficacy of human vaccines in nonhuman primates.

     

复方半枝莲汤治疗失代偿期乙型肝炎肝硬化的临床效果及患者血清T细胞亚群分析

目的:探讨复方半枝莲汤治疗失代偿期乙型肝炎肝硬化的临床效果。方法:选取2016年1月-2018年1月于通辽市传染病医院进行治疗的失代偿期乙型肝炎肝硬化患者60例,按照随机方式分为两组,对照组为恩替卡韦^+保肝对症的常规治疗;研究组在对照组治疗方式的基础上联合使用复方半枝莲汤,研究对比两组患者临床疗效以及血清T细胞亚群等指标的差异。结果:治疗后研究组和对照组治疗有效率分别为96.7%(29/30)和76.7%(23/30)研究组,临床疗效显著优于对照组(P<0.05);治疗前两组患者乙肝病毒的脱氧核糖核酸(Hepatitis B virus Deoxyribonucleic Acid,HBV-DNA)及肝功能指标无显著变化(P>0.05),研究组治疗后各指标下降程度显著优于对照组(P<0.05);治疗前两组患者CD8^+、CD4^+、CD4^+/CD8^+指标无明显差异(P>0.05),治疗后CD4^+提升,CD8^+下降,CD4^+/CD8^+指标上升,CD8^+、CD4^+、CD4^+/CD8^+指标较对照组更加显著(P<0.05);治疗后研究组和对照组不良反应的发生率分别为6.7%(2/30)和33.3%(10/30),研究组不良反应发生率显著低于对照组(P<0.05)。结论:常规治疗同时联合复方半枝莲汤治疗失代偿期乙型肝炎肝硬化效果显著,可有效改善患者肝功能,抑制HBVDNA的复制,提高免疫功能,且具有良好的治疗安全性。     

High plasma microfibrillar-associated protein 4 is associated with reduced surgical repair in abdominal aortic aneurysms

ObjectiveIdentifying biomarkers for abdominal aortic aneurysms (AAA) could prove beneficial in prognosis of AAA and thus the selection for treatment. Microfibrillar-associated protein 4 (MFAP4) is an extracellular matrix protein that is highly expressed in aorta. MFAP4 is involved in several tissue remodeling-related diseases. We aimed to investigate the potential role of plasma MFAP4 (pMFAP4) as a biomarker of AAA.MethodsPlasma samples and data were obtained for 504 male AAA patients and 188 controls in the Viborg Vascular (VIVA) screening trial. The pMFAP4 levels were measured by Alphalisa. The Mann-Whitney U test assessed differences in pMFAP4 levels between the presence and absence of different exposures of interest. The correlation between pMFAP4 and aorta growth rate were investigated through spearman's correlation analysis. Immunohistochemistry and multiple logistic regression adjusted for potential confounders assessed the association between pMFAP4 and AAA. Multiple linear regression assessed the correlation between pMFAP4 and aorta growth rate. Cox regression and competing risk regression were used to investigate the correlation between AAA patients with upper tertile pMFAP4 and the risk of undergoing later surgical repair.ResultsA significant negative correlation between pMFAP4 and aorta growth rate was observed using spearman's correlation analysis (ρ = −0.14; P = .0074). However, this finding did not reach significance when applying multiple linear regression. A tendency of decreased pMFAP4 was observed in AAA using immunohistochemistry. Competing risk regression adjusted for potential confounders indicated that patients with upper tertile pMFAP4 had a hazard ratio of 0.51 (P = .001) for risk of undergoing later surgical repair.ConclusionsHigh levels of pMFAP4 are associated with a decreased likelihood of receiving surgical repair in AAA. This observation warrants confirmation in an independent cohort.