Bioinformatic analysis of the pathogenic mechanism of talaromyces marneffei infection

Background:Talaromyces marneffei (T marneffei), known as a significant pathogen in patients with AIDS in Southeast Asia, is a dimorphic fungus, which can cause deadly systematic infection in immunocompromised hosts. What is more, the dimorphic phase transition has been reported as a conspicuous process linked with virulence. Interestingly, the yeast form was found in infected individuals, representing the pathogenic phase. However, few researches were found to study the mechanism of dimorphic transition. Thus, a diverse insight into the dimorphic switch mechanism, is urgently needed and we are the first one to research the mechanism of dimorphism.Methods:Firstly, we investigated the microarray of T. marneffei in the Gene Expression Omnibus database (GEO) for differentially expressed genes (DEGs). Then Database for Annotation, Visualization and Integrated Discovery (DAVID) v6.8 was employed to analyze the underlying enrichment and pathway in biological process of DEGs. Meanwhile, protein-protein interaction (PPI) network was constructed using STRING database. On the strength of the theory that similar amino acid sequences share similar structures, which play a decisive role on the function of protein, three dimensional structures of hub-genes were predicted to further investigate the likely function of hub-genes.Results:{"type":"entrez-geo","attrs":{"text":"GSE51109","term_id":"51109"}}GSE51109 was elected as the eligible series for the purpose of our research, including {"type":"entrez-geo","attrs":{"text":"GSM1238923","term_id":"1238923"}}GSM1238923 ({"type":"entrez-geo","attrs":{"text":"GSM23","term_id":"23"}}GSM23), {"type":"entrez-geo","attrs":{"text":"GSM1238924","term_id":"1238924"}}GSM1238924 ({"type":"entrez-geo","attrs":{"text":"GSM24","term_id":"24"}}GSM24), and {"type":"entrez-geo","attrs":{"text":"GSM1238925","term_id":"1238925"}}GSM1238925 ({"type":"entrez-geo","attrs":{"text":"GSM25","term_id":"25"}}GSM25). PMAA_012920, PMAA_028730, PMAA_068140, PMAA_092900, PMAA_032350 were the most remarkable genes in all of the three PPI networks, thus, were viewed as hub-genes. With regard to the three-dimensional construction, except that there was no significant prediction structure of PMAA_092900 with the criterion seq identify > 30%, GMQE: 0-1, QMEAN4: -4-0, the parallel templates for four structures were Crystal structure of Saccharomyces cerevesiae mitochondrial NADP(+)-dependent isocitrate dehydrogenase in complex with isocitrate, Organellar two-pore channels (TPCs), Yeast Isocitrate Dehydrogenase (Apo Form) and Crystal Structure Of ATP-Dependent Phosphoenolpyruvate Carboxykinase From Thermus thermophilus HB8 in order.Conclusion:The dimorphic transition of T. marneffei was viewed as a pathogenic factor and DEGs were observed. In-depth study of the function and pathway of DEGs revealed that PMAA_012920, PMAA_028730, PMAA_068140, PMAA_092900, PMAA_032350 were most likely acting as the hub-genes and were likely taking effect through regulating energy metabolism.     

Quantitative Detection of ID4 Gene Aberrant Methylation in the Differentiation of Myelodysplastic Syndrome from Aplastic Anemia

Background:The diagnosis of myelodysplastic syndrome (MDS),especially hypoplastic MDS,and MDS with low blast counts or normal karyotype may be problematic.This study characterized ID4 gene methylation ...     

阻塞性睡眠呼吸暂停低通气综合征患者治疗前后血压变化临床分析

目的：分析阻塞性睡眠呼吸暂停低通气综合征（ OSAHS）患者治疗前后血压变化情况。方法选取206例主诉打鼾患者,根据睡眠呼吸监测的结果,分为OSAHS组（ A组）139例和非OSAHS组（ B组）67例,观察OSAHS患者治疗前后24 h动态血压变化情况。结果 A组高血压的发生率均明显高于B组（ P＜0.05）,其血压多呈非勺型。 OSAHS患者经过有效的经鼻持续气道正压通气（ NCPAP）、手术等治疗后,血压有下降的趋势。结论 OSAHS患者经有效治疗后血压等趋向于正常,可预防、减少心血管事件的发生。     

帕金森病伴情绪障碍患者证素分布及神经递质特征初探

[目的] 分析帕金森病（PD）伴情绪障碍患者的证素分布特征,初步探究PD伴情绪障碍患者的脑内神经递质特征。[方法] 选择2016年1—12月就诊于本院脑病科门诊的41例PD患者,按照情绪障碍诊断标准分为PD伴情绪障碍组与PD非情绪障碍组,对纳入患者进行一般情况、中医四诊信息、汉密尔顿抑郁量表、汉密尔顿焦虑量表的测评,并对其中可配合脑电超慢涨落分析的27例PD患者进行神经递质检测。[结果] PD伴情绪障碍组心神、气滞出现频次明显高于PD非情绪障碍组,差异具有统计学意义（P<0.05）;PD伴情绪障碍组心神、心、肝、热、气滞、阳亢、阴虚的分值明显高于PD非情绪障碍组,两组间差异具有统计学意义（P<0.05）。PD伴情绪障碍组与PD非情绪障碍组相比,谷氨酸（GLU）的测定值较高,5-羟色胺（5-HT）、乙酰胆碱（ACH）的测定值较低,两组间差异具有统计学意义（P<0.05）。[结论] PD伴情绪障碍患者可在治疗帕金森病的基础上佐以养心安神,理气通滞之品。GLU的升高,5-HT、ACH的降低可能为PD患者发生情绪障碍的神经生化基础。     

晚期血吸虫病救治绩效评估管理系统的开发研究

目的构建晚期血吸虫病(晚血)救治绩效评估管理系统,分析评价历年来晚血救治工作。方法运用数据库管理技术和C++编程技术开发该系统,录入历年晚血病案信息输入该系统进行管理,并应用相关信息对晚血救治工作进行成本效果、成本效用、成本效益及综合评价。结果制作了一套集晚血成本效益、成本效用分析和综合评价的软件计算公式系统,该系统具有构建清晰、操作简单、界面友好,方便录入、存储和查询晚血病案信息等特点,能对晚血救治工作进行绩效评估。结论该系统满足了现行晚血救治工作的需求,易于推广使用。     

胃肠道间质瘤的分子学机制及靶向治疗

C-kit/PDGFRA基因发生功能获得性突变和因此引发的KIT蛋白自主磷酸化是胃肠道间质瘤(gastrointestinal stromal tumors,GISTs)发生过程中最具特征性的分子机制.这一发现使得imatinib靶向治疗GISTs成为可能并取得重大疗效,但研究发现不同类型的GISTs对imatinib治疗的反应也不尽相同,并且随着其临床应用的增加,耐药性及不良反应也随之出现,迫使imatinib临床停药或改为二线用药.因此,GISTs是由不同生物学机制引发的一组疾病,本文就GISTs的分子生物学机制及靶向治疗药物作一综述.     

PICC置管前评估的临床实践指南构建及AGREE评价

目的构建以证据为基础的经外周穿刺中心静脉导管(PICC)置管前评估的临床实践指南并进行AGREE评价。方法通过现况调查,制作PICC置管前评估的系统评价,对PICC置管前评估相关临床实践指南进行文献内容分析,构建指南草案并通过德尔菲法对指南相关附件进行修订,使用AGREE评估系统进行评价。结果指南形成包含置管护士、环境与设备、患者评估、导管选择、穿刺技术与穿刺部位、知情同意6个方面共31项推荐意见。AGREE评价的标准化总分分别为98%、93%、95%、92%、89%、100%,6名PICC护理专家均给予"强烈推荐"评价。结论该指南是基于我国临床现状、循证证据、患者意愿和偏好、专业人员判断的循证性临床实践指南,可作为PICC置管前评估的依据。     

Epidemiologic investigation of burns in the elderly in Sichuan Province

Objective

This study analysed the epidemiology of burns in the elderly in Sichuan Province, China, with the objective of formulating a prevention programme.

Methods

A retrospective review of elderly patients admitted to the Burn Centre of West China Hospital during 2003–2009 was performed, including patient demographics, education and burn aetiology.

Results

A total of 103 patients, mean age 69.5 years (range 60–95 years; 58 male, 45 female) were admitted. The most common causes of burn were flames (51.5%), scalding (37.9%), electrical (4.9%) and chemical (2.9%), respectively. The majority occurred at home (68.9%), principally in the kitchen (35.9%), while 19.4% occurred in the workplace. Burns with total body surface area (TBSA) of 0–10% accounted for 52.5% of those admitted for treatment; 10–30% TBSA burns accounted for 20.3%; 30–50% TBSA burns accounted for 15.5%; and burns with a TBSA >50% accounted for 11.7%. Only 6% of patients received appropriate first aid, and 32% did not receive treatment until more than 24 h after injury. The education level was lower in the rural group. Both urban and rural groups had little knowledge of first aid for burns.

Conclusions

Burn-prevention programmes should promote improved living conditions and medical insurance, with prevention education for the elderly, especially in rural areas.