Experimental study of serum substantia nigra neuron autoantibody and its effect in Parkinson disease patients

Parkinson disease(PD) is a neurodegenerativedisorder characterized by the loss of melanin-containing neurons in the substantia nigra parscompacta (SNpc ) and a reduction in striataldopamine.The cause of PD remains unknown,but itis related to genetic,environmentalfactors,etc.Someevidence[1] indicated that multiple mechanisms wereinvolved in the pathogenic procedure of PD,such asoxidative stress,susceptibility to neurotoxin,excitingamine acid toxicity,immune factorand apoptosis,etc.In immune …     

Ⅳ期上皮性卵巢癌的生存率及其影响因素分析

OBJECTIVE: To determine the effects of treatments for stage IV epidermal ovarian cancer and detect the prognostic factors. METHODS: 31 cases primarily treated in our hospital from 1990 to 1998 were analyzed retrospectively. RESULTS: Univariate analysis showed that the number of courses of chemotherapy, the size of residual disease, the histologic cell type, and the metastatic site were the significant prognostic factors(P < 0.05). Cox proportional hazard model confirmed that two factors (the size of residual lesion < or = 2 cm and the cycles of chemotherapy > or = 8 decreased the death odds ratio by 0.28 and 0.72 respectively. Three factors (lack of operation, presence of supraclavicular lymph node involvement and liver involvement) increased the death odds ratio by 14.25 times, 11.44 times and 1.85 times respectively (P < 0.05). CONCLUSION: Surgical debulking, aggressive and appropriate chemotherapy are important measures to improve survival rate for patients with stage IV epithelial ovarian cancer.     

一氧化氮对红内期约氏疟原虫感染的影响

目的：探讨的氏疟原虫感染早期一氧化氮（nitric oxide,NO)对红内期疟原虫的影响。方法：通过ELISA和Griess反应,观察疟原虫感染早期宿主体内细胞因子和NO对红内期虫体血症的影响及其效应。结果：疟原虫感染早期随着以IFN-γ分泌增加为主的Th1细胞免疫应答产生的过程,NO合成逐渐增加,红内期原虫血症受到抑制,一旦解除高水平NO的作用,虫体的增殖能力即可迅速得以恢复。结论：NO通过抑制裂殖子的侵袭力发挥抗红内期原虫感染的保护性免疫效应。     

人参皂甙Rg1对缺氧豚鼠心肌细胞游离钙浓度降低作用的研究

目的探讨人参皂甙(ginsentosides,Gin)单体Rgl及维拉帕米(verapamil,Ver)对豚鼠心肌细胞内游离钙浓度([Ca2+]i)变化的影响.方法采用离体豚鼠心脏Langendorff法灌注,胶原酶Ⅰ型分离心肌细胞,用荧光指示剂方法(Fura-2/AM)标记心肌([Ca2+]i)变化.将心肌细胞悬液分为3组对照组、Rgl组和Ver组.观察缺氧后心肌[Ca2+]i的变化.结果(1)正常氧状态心肌[Ca2+]i均值为(125.4±10.3)nmol/L(n=20).(2)缺氧状态下,心肌[Ca2+]i增加与缺氧时间(程度)直线相关,相关系数r为0.98左右.(3)Rgl对缺氧后心肌[Ca2+]i增加明显延缓.结论Rgl在缺氧条件下,使心肌[Ca2+]i明显下降,从而阻止心肌细胞内钙超载,其作用与Ver相似,我们认为Rgl具有心肌细胞的保护作用.     

Approach selection and outcomes of craniopharyngioma resection: a single-institute study

Neurosurgical Review - Since there are many approaches for successful craniopharyngioma resection, how to choose a suitable approach remains problematic. The aim of this study was to summarize...     

Despite Equivalent Outcomes,Men Receive Neoadjuvant Chemotherapy Less Often Than Women for Lymph Node-Positive Breast Cancer

Annals of Surgical Oncology -     

A nationwide post-marketing survey of knowledge,attitude and practice toward human papillomavirus vaccine in general population: Implications for vaccine roll-out in mainland China

BackgroundHuman papillomavirus (HPV) vaccine has been increasingly discussed in mainland China since its first approval in 2016. To date, nearly all studies assessing HPV vaccine perceptions and attitudes were implemented during pre-licensure period. Therefore, the nationwide post-marketing survey was conducted to update knowledge, attitudes and practice on HPV vaccine among general population in mainland China.MethodsParticipants aged 18–45 years living in mainland China were recruited in April 2019 by multi-stage non-randomized sampling. Sociodemographic factors, HPV and HPV vaccine related awareness, knowledge, attitudes, vaccine uptake and potential obstacles were assessed in questionnaires. Bivariate analysis and multivariate regression were used to identify disparity among subgroups with different sociodemographic characteristics.Results4,000 women (32.1 ± 7.81y) and 1,000 men (31.8 ± 7.96y) were included in final analysis. Less than one third of participants had heard of HPV (female: 31%; male: 22%) and HPV vaccine (female: 34%; male: 23%). Knowledge score was also unfavorable on HPV (female: 3 out of 13; male: 1.8 out of 13) and HPV vaccine (female: 3 out of 6; male: 2 out of 5). Only 3% females had been vaccinated three years after HPV licensure in China, although willingness to get vaccinated among those unvaccinated were high (mean willingness score ± SD: female: 3.3 ± 0.97; male: 3.0 ± 0.98). Industry of employment and household income were the major factors related to awareness and knowledge of vaccine, whereas HPV and HPV vaccine awareness were key influential factors for willingness. The main obstacles of vaccination were safety concerns, lack of knowledge, and high price of HPV vaccines.ConclusionsFindings highlight a lack of vaccine awareness, knowledge, and poor uptake in mainland China and underscore the necessity of health education campaigns. The identified priority groups, contents to be delivered and practical obstacles could furthermore provide insight into health education to reduce disparities and accelerate HPV vaccine roll-out in China.     

中国9个长寿地区65岁及以上人群血铅浓度与认知功能受损的关联研究

目的探讨65岁及以上人群血铅水平与认知功能受损的关联。方法研究对象来自2017-2018年在我国9个长寿地区开展的“老年健康生物标志物队列研究”,最终将1684名血铅和认知功能数据完整的65岁及以上人群纳入本研究。通过问卷调查和体格检测,收集调查对象的人口学特征、生活方式、健康状况及认知功能评分等信息;同时采集调查对象的静脉血以检测血铅水平。根据血铅水平的四分位数将调查对象分为4组(Q₁-Q₄组),采用多因素logistic回归模型分析血铅浓度与认知功能受损的关系,采用限制性三次样条检验血铅浓度与认知受损之间是否存在非线性关联。结果1684名研究对象年龄为(83.1±11.1)岁,其中女性843名(50.1%);认知功能受损者191名(11.3%)。调整相关混杂因素后,老年人血铅浓度每升高10μg/L,认知功能受损患病风险OR(95%CI)值为1.05(1.01~1.10);与血铅浓度Q1组老年人相比,血铅浓度较高者认知功能受损的患病风险较高,Q₂,Q₃,Q₄组的OR(95%CI)值分别为1.19(0.69~2.05)、1.45(0.84~2.51)和1.92(1.13~3.27)。结论我国9个长寿地区65岁及以上老年人血铅水平与认知功能受损患病风险存在关联。