自体外周血干细胞经冠状动脉移植治疗急性心肌梗死：近期疗效随访

目的:观察经皮经腔冠状动脉内移植外周血干细胞治疗急性心肌梗死的可行性与近期临床疗效。方法:①实验对象:选取2003-11/2005-01辽宁省人民医院收治的急性心肌梗死患者70例,男56例,女14例,年龄(60±10)岁,体质量(73±11)kg,急性心肌梗死病程(5±2)d,均对本实验知情同意,实验方案经辽宁省人民医院伦理委员会批准。70例患者随机数字表法分为细胞移植组、常规治疗组,35例/组。两组基线资料基本相似。②实验方法:常规治疗组单纯给予药物治疗 冠状动脉造影术或支架植入术。细胞移植组在常规治疗的基础上应用粒细胞集落刺激因子皮下注射动员自体骨髓干细胞,连续5d,第6天经血细胞分离机分离采集外周血干细胞悬液57mL,经over the wire球囊导管中心腔注入梗死相关动脉,注入CD34细胞数量为(7.25±7.33)×107个。③实验评估:在外周血干细胞动员、采集及经冠状动脉回输过程中观察患者不良反应。于术前及术后6个月检查两组患者左室形态、心功能、室壁节段性运动积分的改变。结果:术后6个月,细胞移植组全部完成随访,常规治疗组23例完成随访。①手术前后超声心动图参数值的变化:与术前比较,术后6个月细胞移植组左室收缩末容积、室壁节段性运动积分指数均明显下降(P<0.05),左室射血分数显著升高(P<0.05)。术后6个月与常规治疗组比较,细胞移植组左室射血分数明显升高,室壁节段性运动积分指数显著降低,差异有显著性意义(P<0.05)。②安全性评估:外周血干细胞动员时不良反应占37.1%,分离和采集过程不良反应占15.3%,经冠状动脉内回输过程不良反应占20.0%。结论:经皮经腔冠状动脉移植自体外周血干细胞治疗急性心肌梗死,可在近期有效地减少心肌梗死缺血面积,减轻左室重构,改善心功能。     

Psychological stress in adolescent and adult mice increases neuroinflammation and attenuates the response to LPS challenge

Background  

There is ample evidence that psychological stress adversely affects many diseases. Recent evidence has shown that intense stressors can increase inflammation within the brain, a known mediator of many diseases. However, long-term outcomes of chronic psychological stressors that elicit a neuroinflammatory response remain unknown.     

The M694V mutation in Armenian‐Americans: a 10‐year retrospective study of MEFV mutation testing for familial Mediterranean fever at UCLA

Familial Mediterranean fever (FMF), inherited in an autosomal recessive manner, is a systemic auto‐inflammatory disorder characterized by recurrent attacks of fever with peritonitis, pleuritis, synovitis and erysipeloid rash. The marenostrin‐encoding fever (MEFV) gene, located on chromosome 16p13.3, is the only gene in which mutations are currently known to cause FMF. To correlate specific genotypes with adverse phenotypes of affected populations residing in the Western United States, a retrospective case series review was conducted of all MEFV gene mutation testing completed at UCLA Clinical Molecular Diagnostic Laboratory between February 2002 and February 2012, followed by clinical chart review of all subjects who either have a single or double mutation. All 12 common mutations in the MEFV gene were analyzed and the M694V variant was found to be associated with an adverse FMF clinical outcome in the Armenian‐American population, manifested by earlier onset of disease, increased severity of disease, and renal amyloidosis.     

Motivations for Contributing to Health-Related Articles on Wikipedia: An Interview Study

BackgroundWikipedia is one of the most accessed sources of health information online. The current English-language Wikipedia contains more than 28,000 articles pertaining to health.ObjectiveThe aim was to characterize individuals’ motivations for contributing to health content on the English-language Wikipedia.MethodsA set of health-related articles were randomly selected and recent contributors invited to complete an online questionnaire and follow-up interview (by Skype, by email, or face-to-face). Interviews were transcribed and analyzed using thematic analysis and a realist grounded theory approach.ResultsA total of 32 Wikipedians (31 men) completed the questionnaire and 17 were interviewed. Those completing the questionnaire had a mean age of 39 (range 12-59) years; 16 had a postgraduate qualification, 10 had or were currently studying for an undergraduate qualification, 3 had no more than secondary education, and 3 were still in secondary education. In all, 15 were currently working in a health-related field (primarily clinicians). The median period for which they have been an active editing Wikipedia was 3-5 years. Of this group, 12 were in the United States, 6 were in the United Kingdom, 4 were in Canada, and the remainder from another 8 countries. Two-thirds spoke more than 1 language and 90% (29/32) were also active contributors in domains other than health. Wikipedians in this study were identified as health professionals, professionals with specific health interests, students, and individuals with health problems. Based on the interviews, their motivations for editing health-related content were summarized in 5 strongly interrelated categories: education (learning about subjects by editing articles), help (wanting to improve and maintain Wikipedia), responsibility (responsibility, often a professional responsibility, to provide good quality health information to readers), fulfillment (editing Wikipedia as a fun, relaxing, engaging, and rewarding activity), and positive attitude to Wikipedia (belief in the value of Wikipedia). An additional factor, hostility (from other contributors), was identified that negatively affected Wikipedians’ motivations.ConclusionsContributions to Wikipedia’s health-related content in this study were made by both health specialists and laypeople of varying editorial skills. Their motivations for contributing stem from an inherent drive based on values, standards, and beliefs. It became apparent that the community who most actively monitor and edit health-related articles is very small. Although some contributors correspond to a model of “knowledge philanthropists,” others were focused on maintaining articles (improving spelling and grammar, organization, and handling vandalism). There is a need for more people to be involved in Wikipedia’s health-related content.     

Mesenchymal hamartoma of the liver: radiologic-pathologic correlation

Mesenchymal hamartoma of the liver (MHL) is an uncommon cystic mass of infancy that is a developmental anomaly rather than a neoplasm. Fourteen cases of MHL were retrospectively reviewed. Grossly, MHL is a solitary mass with cystic spaces of variable size. Patients are seen initially with painless progressive abdominal enlargement. On plain films, MHL appears as a large, noncalcified mass in the right upper quadrant. Scintigraphy is helpful in confirming its hepatic origin. Ultrasonography and computed tomography demonstrate a large multiloculated mass with considerable variation in the size of septa and cystic spaces. Angiographically, MHL is avascular or hypovascular. Recognition of these radiographic findings allows a correct diagnosis to be made in many cases. With resection, the prognosis is excellent.     

Acetabular protrusion in the Marfan syndrome

The Marfan syndrome is a genetic disorder of connective tissues resulting in ocular, cardiovascular, and musculoskeletal deformities. The authors reviewed 22 cases of Marfan syndrome. Forty-five percent (ten of 22) of the patients had acetabular protrusion, with one-half of these being unilateral and one-half bilateral. Scoliosis was associated with acetabular protrusion in 90% of cases (nine of ten). The authors conclude that acetabular protrusion is a common skeletal finding in the Marfan syndrome.