氟西汀治疗高血压伴抑郁症状的疗效分析

目的 评价氟西汀治疗高血压伴抑郁症状的效果。方法 70例原发高血压病伴抑郁症状的患者，分成治疗组和对照组，两组均用降压药物治疗，治疗组加用氟西汀，两周后观察疗效。结果 治疗组和对照组的有效率分别为78．9％和56．3％。两组比较差异显著。结论 氟西汀治疗高血压伴抑郁症状有显著疗效。     

以水为溶剂的电纺丝明胶纤维的制备及性能研究

本研究以水为溶剂通过静电纺丝制备一种明胶纤维。通过调节明胶水溶液浓度和静电纺丝环境温度，采用SEM研究了不同浓度、温度条件下纤维的微观形貌及直径分布。并对采用戊二醛交联后明胶纤维的形貌变化、热力学及力学性能变化进行了研究。结果表明：优化后的纺丝液浓度为33％（质量分数），温度为40℃。得到的明胶纤维的直径在120nm．210nm之间。交联后的纤维发生溶并，焓值降低，力学性能提高，在水中能够充分溶胀。该体系采用水为溶剂改善了采用有机溶剂的纤维残留潜在毒性问题，可以以更具生物安全性的方式负载多肽类药物或生长因子。在医药及组织工程支架领域具有潜在的应用价值。     

剖宫产术后应用妇产康复仪催乳的临床疗效分析

目的:探讨剖宫产术后采用妇产康复仪催乳的临床效果。方法:将80例足月剖宫产产妇随机分为对照组和实验组各40例,对照组给予常规母乳喂养指导,实验组则另加妇产康复仪进行催乳治疗。观察比较两组的初始泌乳时间、泌乳量、新生儿哺乳5天后的体重。结果:实验组的初始泌乳时间多在术后24～48 h,明显早于对照组的72 h(P<0.05);术后24h、48 h、72 h实验组的泌乳量均明显多于对照组(P<0.05);术后5天实验组新生儿的平均体重明显重于对照组(P<0.05)。结论:妇产康复仪用于剖宫产后产妇催乳的效果显著,值得推广。     

Whether cognitive behavioral therapy is effective for Alzheimer's disease: A protocol for systematic review and network meta-analysis

Background:Alzheimer disease (AD) is a progressive neurodegenerative disease characterized by impaired memory and cognitive judgment. It is the leading cause of dementia in the elderly, and its high morbidity and mortality have also brought a significant social burden. So far, there is no method can completely cure Alzheimer''s dementia, but there are many non-drug treatments that have been praised by people, especially the cognitive behavioral therapy proposed in recent years. The main purpose of this article is to evaluate the effect of cognitive behavioral therapy on the cognitive function improvement of patients with Alzheimer''s dementia.Methods:We did a network meta-analysis to identify both direct and indirect evidence in relevant studies. A systematic literature search will be performed in the Cochrane Library, PubMed, and EMBASE from inception to October 2020. We extracted the relevant information from these trials with a predefined data extraction sheet and assessed the risk of bias with the Cochrane risk of bias tool.The outcomes investigated were Mini–Mental State Examination and AD Assessment Scale-Cognitive section scores. We did a pair-wise meta-analysis using the fixed-effects model and then did a random-effects network meta-analysis within a Bayesian framework. The = the Assessment of Multiple Systematic Reviews-2 scale, Preferred Reporting Items for Systematic Reviews and Meta-Analyses scale and Grading of Recommendations Assessment, Development and Evaluation were used to assess the quality and evidence grade of the literature. General characteristics of the eligible randomized controlled trials will be summarized and described. Meanwhile, The ADDIS software will be used to perform the network meta-analysis, and the result figures will be generated by STATA 15.0 software.Results:Using the draft search strategy of databases and after screening,7 randomized controlled trials met the a priori criteria and were included. This network mate-analysis will be published in a peer-reviewed journal.Conclusion:Our study will provide evidence for cognitive behavioral intervention in AD patients. And provide recommendations and guidelines for the clinic.Protocol Registration:INPLASY2020110052.     

Pituitary tumor transforming gene PTTG2 induces psoriasis by regulating vimentin and E-cadherin expression

Psoriasis is a common and intractable skin disease affecting the physical and mental health of patients. This study focused on the roles of pituitary tumor transforming gene 2 (PTTG2) in psoriasis. Using real-time quantitative PCR and western blot, the expression patterns of PTTG2 were compared in psoriatic epidermis cells and normal cells, from both mRNA levels and protein levels. Knockdown of PTTG2 by siRNA was conducted in HaCaT cells to investigate the changes in cell viability and migration in vitro. Expression changes of vimentin and E-cadherin were also detected in the transfected cells. Results showed PTTG2 was significantly overexpressed in the psoriatic epidermis cells (P < 0.05). The cell viability and migration were inhibited by the knockdown of PTTG2. Besides, knockdown of PTTG2 resulted in down-regulation of vimentin and up-regulation of E-cadherin, with significant differences compared to the siRNA control group (P < 0.05). This study indicated the involvement of PTTG2 in mediating epidermis cell viability and migration and in pathogenesis of psoriasis. PTTG2 might be a potential therapeutic target for psoriasis through inducing epithelial-to-mesenchymal transition (EMT) via regulating the expression of vimentin and E-cadherin.     

Banxia-Houpu decoction diminishes iron toxicity damage in heart induced by chronic intermittent hypoxia

ContextObstructive sleep apnoea (OSA) causes chronic intermittent hypoxia (CIH), which results in mitochondrial dysfunction and generates reactive oxygen species (ROS) in the heart. Excessive free iron could accelerate oxidative damage, which may be involved in this process. Banxia-Houpu decoction (BHD) was reported to improve the apnoea hypopnoea index in OSA patients, but the specific mechanism was still unclear.ObjectiveTo investigate whether BHD could reduce CIH-induced heart damage by regulating iron metabolism and mitochondrial function.Materials and methodsC57BL/6N mice were randomly divided into control, CIH and BHD groups. Mice were exposed to CIH (21 − 5% O₂, 20 times/h, 8 h/d) and administered BHD (3.51, 7.01 and 14.02 g/kg, intragastrically) for 21 d. Cardiac and mitochondrial function, iron levels, apoptosis and mitophagy were determined.ResultsBHD (7.01 g/kg) significantly improved cardiac dysfunction, pathological change and mitochondrial structure induced by CIH. BHD increased the Bcl-2/Bax ratio (1.4-fold) and inhibited caspase 3 cleavage in CIH mice (0.45-fold). BHD activated mitophagy by upregulating Parkin (1.94-fold) and PINK1 (1.26-fold), inhibiting the PI3K-AKT-mTOR pathway. BHD suppressed ROS generation by decreasing NOX2 (0.59-fold) and 4-HNE (0.83-fold). BHD reduced the total iron in myocardial cells (0.72-fold) and mitochondrial iron by downregulating Mfrn2 (0.81-fold) and MtFt (0.78-fold) proteins, and upregulating ABCB8 protein (1.33-fold). Rosmarinic acid, the main component of Perilla Leaf in BHD, was able to react with Fe²⁺ and Fe³⁺ in vitro.Discussion and conclusionsThese findings encourage the use of BHD to resist cardiovascular injury and provide the theoretical basis for clinical treatment in OSA patients.     

SKP2在大肠癌组织中的表达及预后意义

目的:探讨SKP2在大肠癌中的表达和预后作用．方法:采用SP免疫组化法检测68例大肠癌手术切除组织标本中SKP2和P27的表达,用Kaplan-Meier和Cox回归分析法进行生存分析．结果:在68例大肠癌组织中,SKP2和P27的阳性表达率分别为41．2％(n=28)和52．9％(n= 36)．SKP2的表达与组织分级显著相关(X2= 14．073,P=0．001)．SKP2表达与年龄、性别和AJCC分期无关(P>0．05)．SKP2和P27负相关(r=-0．528,P=0．0001)．SKP2高表达组的总生存期较SKP2低表达组短(31．5±4．0 mo vs 54．5±2．1 mo,P<0．01)．多因素Cox回归分析表明,SKP2表达是大肠癌的独立预后因素(RR= 6．227．P=0．033)．结论:SKP2表达可以作为大肠癌患者预后的指标．     

儿童急性髓系白血病DNMT3a基因突变的分析

随着新一代基因测序技术的发展,越来越多与肿瘤发生发展有关的基因被发现,比如最近发现的DNMT3a基因。此基因为急性髓系白血病预后判断提供了新的分子生物学标记。本研究探讨儿童急性髓系白血病患儿骨髓中DNMT3a基因的突变情况。选取就诊于中国医学科学院血液病医院儿童血液病诊治中心的57例儿童急性髓系白血病患儿,通过PCR直接扩增其骨髓细胞中DNMT3a基因全部23个外显子,并通过直接测序方法与野生型DNMT3a基因比对,检测DNMT3a基因的突变情况。结果表明,在57例患儿中未发现DNMT3a突变热点R882位点的突变,进一步分析其它位点也未发现任何突变。而在这些患儿中AML1/ETO突变10例,CBFB/MYH11突变3例,PML/RARa突变13例,FLT3/ITD突变5例,FLT3/TKD突变1例,既含有PML/RARa又含有FLT3/TKD突变2例。结论:DNMT3a基因虽然在成人急性髓系白血病患者中有着较高的突变率,且是预后不良的一个独立因素,但其突变率在儿童患者中很低,甚至没有突变。这提示儿童和成人急性髓系白血病的发生可能存在不同机制。     

Lack of a genetic association between the TNXB locus and schizophrenia in a Chinese population

A recent study demonstrated that the tenascin X (TNXB) gene was associated with schizophrenia in a British population. To replicate the initial finding, we analysed two positive single nucleotide polymorphisms (SNPs), rs1009382 and rs204887 present at the TNXB locus, in a Chinese population by using PCR-based restriction fragment length polymorphism analysis. We recruited a total of 136 family trios consisting of fathers, mothers and affected offspring with schizophrenia. The transmission disequilibrium test did not show allelic association between these two SNPs and schizophrenia, and the rs1009382-rs204887 haplotypes were not associated with the illness either. The present results suggest that the TNXB locus does not appear to be associated with schizophrenia in the Chinese population. Because the TNXB gene is less than 100 kb away from the NOTCH4 locus that was also reported to be associated with schizophrenia, allelic and locus heterogeneity could be possible reasons for the failure to replicate the TNXB finding.     

Antitumor effect of secreted Flt3-ligand can act at distant tumor sites in a murine model of head and neck cancer

The Flt3 ligand (Flt3-L) manifests antitumor activity, presumably due to its capacity to recruit dendritic cells and cause their proliferation. To assess whether local production of Flt3-L can mediate a "distant bystander" effect, murine B4B8 squamous cell carcinoma cells were transfected with a plasmid encoding a secretory form of Flt3-L to produce B4B8FL cells. Similarly, B4B8FL and B4B8 cells were transfected with herpes simplex virus thymidine kinase (HSVTK) to produce B4B8TK and B4B8FL/TK cells, which should be sensitive to ganciclovir (GCV), to know whether the effects of Flt3-L and HSVTK/GCV would be synergistic. To test for a distant bystander effect in vivo, B4B8FL, B4B8TK, and B4B8FL/TK cells were injected subcutaneously into the left flank of syngeneic Balb/c mice, and na?ve B4B8 cells were injected into the right flank. The formation of tumors derived from B4B8FL and B4B8FL/TK cells was significantly delayed in both flanks compared with na?ve B4B8 and B4B8TK cells. Growth of B4B8TK tumors in the ipsilateral flank was retarded following GCV treatment, but in contrast to B4B8FL and B4B8FL/TK cells, no distant bystander effect in the contralateral flank was observed. Immunohistochemistry showed lymphocytic infiltrates in both flanks of the B4B8FL and B4B8FL/TK groups. The data indicate that in these cells, local secretion of Flt3-L is sufficient to evoke a distant bystander effect but that expression of HSVTK, even after GCV administration, is not. Furthermore, the combination of local Flt3-L and HSVTK production, together with GCV administration, does not enhance the distant bystander effect produced by Flt3-L alone.