Neuroprotective effect of carnosine in the olfactory bulb after vanadium inhalation in a mouse model

Carnosine (β‐alanyl‐L‐histidine) is synthesized in the olfactory system, has antioxidant activity as a scavenger of free radicals and has been reported to have neuroprotective action in diseases which have been attributed to oxidative damage. In neurodegenerative disorders, such as Parkinson's and Alzheimer's diseases, impairment of olfactory function has been described. Vanadium derivatives are environmental pollutants, and its toxicity has been associated with oxidative stress. Vanadium toxicity on the olfactory bulb was reported previously. This study investigates the neuroprotective effect of carnosine on the olfactory bulb in a mice model of vanadium inhalation. Male mice were divided into four groups: vanadium pentoxide (V₂O₅) [0.02 mol/L] inhalation for one hour twice a week; V₂O₅ inhalation plus 1 mg/kg of carnosine administered daily; carnosine only, and the control group that inhaled saline. The olfactory function was evaluated using the odorant test. Animals were sacrificed four weeks after exposure. The olfactory bulbs were dissected and processed using the rapid Golgi method; cytological and ultrastructural analysis was performed and malondialdehyde (MDA) concentrations were measured. The results showed evidence of olfactory dysfunction caused by vanadium exposure and also an increase in MDA levels, loss of dendritic spines and necrotic neuronal death in the granule cells. But, in contrast, vanadium‐exposed mice treated with carnosine showed an increase in dendritic spines and a decrease in neuronal death and in MDA levels when compared with the group exposed to vanadium without carnosine. These results suggest that dendritic spine loss and ultrastructural alterations in the granule cells induced by vanadium are mediated by oxidative stress and that carnosine may modulate the neurotoxic vanadium action, improving the olfactory function.     

阻癌胃泰冲剂治疗胃癌癌前病变的胃粘膜形态学及幽门螺杆菌变化

用阻癌胃泰冲剂治疗胃癌癌前病变并比较治疗前后胃粘膜形态学、胃粘膜内幽门螺杆菌（HP）变化。结果用阻癌胃泰冲剂治疗后胃粘膜颗粒样或结节状隆起、充血水肿、糜烂、溃疡、粘膜变薄等变化明显减轻。治疗前后比较有极显著性差异（P＜0．01），治疗组疗效亦明显高于对照组（P＜0．01）。治疗组对HP的感染具有抑制和清除效果，与对照组比较有极显著性差异（P＜0．01）。总有效率达80．23％。     

弓形虫致密颗粒蛋白GRA2真核表达质粒的构建与体外表达

目的构建弓形虫致密颗粒蛋白GRA2的真核表达重组质粒。方法设计合成GRA2引物，运用PCR方法扩增其基因片段，经克隆至pMDl8-T载体后，亚克隆至真核表达质粒pcDNA3．1（-）而构建重组表达质粒pcDNA3．1-GRA2。脂质体法将构建的重组质粒转染HFF细胞，RT—PCR法检测转染细胞中GRA2的表达情况。结果PCR扩增GRA2基因序列正确，构建的重组表达质粒pcDNA3．1-GRA2经PCR、EcoRⅠ／HindⅢ双酶切和测序鉴定正确；转染GRA2基因的细胞，RT—PCR可见目的条带。结论成功获得真核表达重组质粒pcDNA3．1-GRA2，为进一步研究弓形虫疫苗的免疫保护性奠定基础。     

桑仙降压颗粒对自发性高血压大鼠心肌VEGF及nm23的干预

[目的]观察桑仙降压颗粒对自发性高血压大鼠(SHR)心肌血管内皮生长因子(VEGF)及nm23的影响,探讨其对高血压病心肌血管生长促进因子、抑制因子的干预作用。[方法]SHR随机分为3组,空白对照组、吲哒帕胺西药对照组、桑仙降压颗粒组,以Wistar大鼠为正常对照,4周及8周后观察SHR心肌VEGF及nm23的表达。[结果]实验前正常对照组与空白对照组相比VEGF及nm23蛋白光密度值差异均无统计学意义。实验4、8周后相较空白对照组,桑仙降压颗粒组VEGF表达明显增多而nm23蛋白密度值显著减少。[结论]桑仙降压颗粒能增强VEGF的表达及降低nm23的蛋白密度值。     

热淋清颗粒联合西药治疗慢性前列腺炎患者临床疗效观察

目的：探讨热淋清颗粒联合西药治疗慢性前列腺炎的临床疗效及其对前列腺液中白细胞数的影响。方法纳入我院2013年8月至2014年8月收治的84例慢性前列腺炎患者,将其随机分为实验组（n=42）和对照组（n=42）。实验组采用热淋清颗粒联合西药治疗,对照组仅采用西药治疗。两组疗程均为2个月。统计两组疗效、NIH-CPSI各项评分、白细胞数变化及不良反应。结果实验组总有效率（92.86%）明显高于对照组（73.81%）（P＜0.05）;两组治疗后排尿异常评分、疼痛不适评分、生活质量影响评分、总分明显低于治疗前（P＜0.05）;治疗后实验组排尿异常评分、疼痛不适评分、生活质量影响评分、总分明显低于对照组（P＜0.05）;两组治疗后白细胞计数明显低于治疗前（P＜0.05）;治疗后实验组白细胞计数明显低于对照组（P＜0.05）;两组在治疗过程中均未出现明显不良反应。结论热淋清颗粒联合西药治疗慢性前列腺炎临床疗效明显,可显著降低前列腺液中白细胞数。     

Toujie Quwen granule used with conventional western therapy for coronavirus disease 2019: A protocol for systematic review and meta-analysis

Background:Coronavirus disease 2019 (COVID-19) is an epidemic infectious disease resulted from 2019 novel coronavirus (2019-nCoV). Up till now, COVID-19 has swept globally. Currently, due to many high-profiled benefits, clinical studies on Toujie Quwen granule (TJQW) have been increasing. The aim of the study is to assess the efficacy and safety of TJQW used with conventional western therapy for COVID-19.Methods:Relevant randomized controlled trials (RCTs) were searched in Chinese and English databases, and the search time is January 2020 to May 2021. English databases include PubMed, Embase, Web of Science, and the Cochrane Library. Chinese databases include CNKI, WF, VIP, and CBM. The international clinical trial registration platform and the Chinese clinical trial registration platform of controlled trials will be searched by us from January 2020 to May 2021. According to the inclusion and exclusion criteria, screening literature, extraction data will be conducted by 2 researchers independently. Statistical analysis will be conducted using the RevMan 5.3.5 software. After screening the literature based on the inclusion and exclusion criteria, The Recommendation, Assessment, Development, and Evaluation (GRADE) system will be used to evaluate the quality of each result.Results:This study will provide the evidence for TJQW to be used with conventional western therapy for COVID-19.Conclusion:The efficacy and safety of TJQW used with conventional western therapy for COVID-19 will be assessed.INPLASY registration number:INPLASY202150038     

刚地弓形虫RH株GRA6分子基因克隆与序列分析

目的　克隆刚地弓形虫 RH株致密颗粒抗原 (Dense granule antigen,GRA6 )分子基因 ,为研究使用重组的GRA6分子作为抗原进行弓形虫病诊断奠定基础。　方法　根据己知的 GRA6序列合成一对引物 ,抽提弓形虫速殖子m RNA,以速殖子 m RNA为模板 ,通过反转录 PCR(RT- PCR)扩增出 GRA6的 c DNA条带。目的基因 DNA条带被克隆到质粒 p UC19中形成重组质粒。对重组质粒 DNA进行纯化 ,并对目的基因片段进行核苷酸序列分析。　结果　通过RT- PCR从 m RNA中扩增出一条分子量约 70 0 bp的 DNA条带。核苷酸序列分析表明 ,GRA6分子基因的开放的阅读框全长为 6 93bp,编码 2 30个氨基酸分子 ,与已报道的 RH株 GRA6分子具有 10 0 %的同源性。　结论　本研究获得了刚地弓形虫 RH株的 GRA6分子基因 ,为今后应用此分子作为抗原诊断弓形虫病奠定了基础     

血尿冲剂治疗慢性肾小球源性血尿

目的 观察血尿冲剂治疗肾小球源性血尿(肾性血尿)的疗效.方法 对40例确诊为肾性血尿的患者采用血尿冲剂(穿山甲粉、琥珀粉、花蕊石粉等)治疗,8周为1个疗程,比较治疗前后尿常规指标变化和尿常规各项指标的动态变化.结果 治疗1个疗程后,临床控制27例(67.5％),显效6例(15％),有效5例(12.5％),无效2例(5％),总有效率95％,对蛋白尿有一定的改善.结论 血尿冲剂治疗肾性血尿,能活血通络,化瘀止血,使瘀血祛,经络通,出血止,血尿愈,对尿蛋白亦有一定的改善.     

化痰逐瘀通脉颗粒联合辛伐他汀治疗颈动脉斑块

目的 探讨中药化痰逐瘀通脉颗粒联合辛伐他汀治疗颈动脉斑块的临床疗效.方法 选择符合颈动脉斑块和中医痰瘀互结诊断标准患者60例,随机分为治疗组和对照组,各30例,治疗组采用化痰逐瘀通脉颗粒(半夏、陈皮、茯苓等,1剂/d)联合辛伐他汀(10 mg/次,1次/d)口服;对照组仅采用辛伐他汀口服,治疗6周后比较2组临床疗效、IMT、血脂变化及不良反应.结果 治疗组中IMT和血脂变化均较治疗前有明显改善,且治疗组比对照组改善更为明显;治疗组总有效率93.33％明显高于对照组的70.0％(P＜0.05).结论 中药联合小剂量辛伐他汀治疗颈动脉斑块,能够起到消除或减缓动脉斑块形成的作用,降低不良反应发生率.     

即时性图像法膳食调查技术应用于学龄前儿童膳食调查的效果评价

目的对即时性图像法应用于学龄前儿童膳食调查进行效果评价。方法招募60位幼儿园儿童及其家长,为儿童提供食物原料经严格称重后烹制的午餐。进餐前家长从三个角度对食物进行拍摄,同样方法拍摄剩余食物,并将图像文件发送至固定邮箱,次日接受针对儿童的24h膳食回顾调查,膳食估量小组成员对图片中的食物进行估重。得到称量数据、图像法数据和24h回顾法数据,归类汇总三组数据并进行营养计算。结果与24h回顾法数据相比,除水果和带鱼外,图像法数据与称重数据的相关性更好。除畜禽肉类和带鱼外,图像法的数据与称重法更接近。基于图像法数据计算的能量与各营养素的摄入量数据,与称重数据的计算结果更接近。结论与24h回顾法相比,用即时性图像法膳食调查技术对学龄前儿童进行膳食调查,可获得与实际重量更接近的食物消费量数据。