Mycobacterium Tuberculosis Infection Incidence in Hospitalized Renal Transplant Patients in the United States, 1998–2000

The incidence, risk factors, and prognosis for Mycobacterium tuberculosis (MTB) infection have not been reported in a national population of renal transplant recipients. We performed a retrospective cohort study of 15,870 Medicare patients who received renal transplants from January 1, 1998 to July 31, 2000. Cox regression analysis derived adjusted hazard ratios (AHR) for factors associated with a diagnosis of MTB infection (by Medicare Institutional Claims) and the association of MTB infection with survival. There were 66 renal transplant recipients diagnosed with tuberculosis infection after transplant (2.5 cases per 1000 person years at risk, with some falling off of cases over time). The most common diagnosis was pulmonary TB (41 cases). In Cox regression analysis, only systemic lupus erythematosus (SLE) was independently associated with TB. Mortality after TB was diagnosed was 23% at 1 year, which was significantly higher than in renal transplant recipients without TB (AHR, 4.13, 95% CI, 2.21, 7.71, p < 0.001). Although uncommon, MTB infection is associated with a substantially increased risk of mortality after renal transplantation. High-risk groups, particularly those with SLE prior to transplant, might benefit from intensified screening.     

HIV/AIDS病人预防和治疗结核病双重感染的研究

目的调查HIV/AIDS病人结核菌素(PPD)试验反应状况及与免疫系统受损程度的联系,并探讨其预防和治疗结核病的意义。方法采用前瞻性病例对照研究方法,对40例HIV(+)者和202例HIV(-)者做结核菌素试验,并对HIV(十)者做CD4、CD8细胞计数测定,对HIV(+)分组服药,观察胸部病变情况。结果HIV(+)与HIV(-)者PPD阳性率分别为12.5%、28.2%(P<0.05)。当CD4细胞计数下降时,PPD反应减弱。CD4<200个/mm3时PPD均无反应(0×0).病例服药组经化学药物预防治疗后其肺部病变异常率小于病例对照组。结论HIV(+)者中PPD阳性率显著低于HIV(-)者。CD4细胞数下降可能是艾滋病并发结核的主要原因.对HIV/AIDS患者使用化学药物预防和治疗结核是有效的。     

1090例高校新生卡介苗接种普及情况和PPD试验结果调查分析

为了解江西省卡介苗实施情况并为高校防治结核提供依据。本文调查江西财院九江分院１０９０名新生的卡痕和ＰＰＤ试验。结果：总卡痕率７２．９４％，城、乡间无显著性差异；ＰＰＤ试验阴性率６０．４６％，阳性率３９．５４％、其中强阳性率３．１２％，乡村生强阳率显著高于城市生；ＰＰＤ阳性率在城、乡之间以及有、无卡痕者均无显著性差异。有卡痕者ＰＰＤ阳性率４０．５０％，提示近６０％种卡后未阳转或又复转阴。作者认为高校新生入学时进行ＰＰＤ试验并对阴性和强阳性采取进一步防治措施是非常必要的。     

The Follow-Up Study of Skin Reactivity to Recall Antigens and E- and EAC-RFC Profiles in Blood in Asbestos Workers

We have determined cutaneous DTH reactions to SK-SD and PPD and peripheral blood lymphocyte profiles in a group of asbestos workers in two consecutive surveys. It was found that asbestosis and, to a lesser extent, the presence of ANA are significantly correlated with the lack of response to the above antigens. 83% of asbestos workers when tested at a 4 year interval fell into the same two categories of responsiveness (lack of response or response at least to one antigen).The asbestosis cases had lower total lymphocyte count as well as proportions and absolute number of E-RFC as compared to asbestos workers without asbestosis and/or ANA. Furthermore, the latter group showed the lower percentages and absolute number of E-RFC than the matched controls. The presence of ANA is also correlated with lower proportions of E-RFC. However, this is related at least in part to asbestosis.     

A novel strategy for targeting CD4+ PPD-reactive T cells against tumour cells using PPD monoclonal antibody heteroconjugates.

We have constructed PPD monoclonal antibody heteroconjugates specific for a tumour-associated antigen of C57BL/6 melanomas or for human complement component C3d fixed de novo to murine fibrosarcoma cells (MC6A). The ability of our heteroconjugates to target CD4+ PPD-reactive T cells against the appropriate tumour targets was then determined in vitro. Heteroconjugate-treated B16-F10 and MC6A tumour targets were both able to present PPD to the specific T cells, resulting in activation and concomitant lymphokine secretion. Secreted lymphokines were then demonstrated to cause significant tumour cytolysis and cytostasis in vitro. Preliminary experiments in vivo suggest that this targeting system may provide the basis for a future immunotherapeutic strategy.     

万县卫生学校学生PPD试验结果分析

对3323名学生进行了PPD试验,阳性率49．38％,其中男性45．36％,女性50．72％,有统计差异;强阳性率男性4．97％,女性12．01％．有统计差异;城市生阳性率66．29％．农村生阳性率45．55％,有统计差异。对PPD试验阴性者补种卡介苗,阳转率为49．68％。认为对在校生进行PPD试验及对阴性者补种卡介苗是十分重要的防治结核的措施。     

结核免疫水平监测方法的对比研究

目的　进一步证实 Ｐ Ｐ Ｄ 实验在监测结核免疫力中的应用价值。方法　用卡介苗接种８７９名儿童,１２ 周后进行 Ｐ Ｐ Ｄ 试验并查验卡痕反应,计算评价筛选试验的指标。结果　卡痕试验的敏感度、特异度、正确指数均低,而误诊率、漏诊率均高。结论　 Ｐ Ｐ Ｄ 实验是目前尚未开展人体内测定结核免疫力前唯一有效的监测结核免疫力的方法。     

Morphological and functional changes of chronic pancreatitis in patients with dyspepsia: A prospective,observational, cross-sectional study

ObjectiveWhether chronic pancreatitis (CP) may present with dyspepsia is controversial. We aimed at evaluating the frequency and risk factors of changes of CP in patients presenting with epigastric pain syndrome (EPS)-like symptoms.DesignA prospective, observational, cross-sectional study was carried out in patients with EPS-like symptoms. Patients underwent endoscopic ultrasound (EUS) evaluation of the pancreas, and changes of CP were defined as the presence of five or more EUS criteria of the disease. In patients with 3 or 4 EUS criteria, magnetic resonance dynamic evaluation of the pancreas (MRI/sMRCP) and endoscopic pancreatic function test (ePFT) were carried out to confirm or exclude the presence of changes of CP. A multivariate logistic regression analysis was performed to evaluate factors associated with CP findings, and results are shown as odds ratio (OR) and 95% confidence interval (CI).Results213 patients were included. Changes of CP were confirmed by EUS (≥5 criteria) in 18 patients (8.4%). Thirty-four patients had 3-4 EUS criteria, and changes of CP were confirmed in 27 of them by MRI/sMRCP and ePFT (12.7%). Morphological and functional findings of CP were then present in 45 patients (21.1%). Male gender (OR 2.97; 95%CI 1.39–6.37) and alcohol and tobacco consumption (OR 6.56; 95%CI 1.97–21.85) were associated with the presence of changes of CP.ConclusionMorphological and functional changes of CP are frequent in patients with EPS-like symptoms. Whether these pancreatic changes explain EPS-like symptoms requires further investigation.     

胸水结核抗体对结核性胸膜炎的诊断意义

目的 了解结核性胸膜炎的诊断意义。方法 检查205例胸水的病因分析。结果 胸水结核抗体对结核性胸膜炎阳性率最高83.1%。结论 胸水结核抗体对鉴别结核性胸膜炎有较高实用价值。     

产后与非产后抑郁症患者失配性负波的对比研究

目的探讨产后抑郁症与非产后抑郁症患者失配性负波（MMN）的差异,为产后抑郁症的预防提供参考指标。方法选择2011年4月一2012年12月解放军第三医院精神科收治的24例产后抑郁症患者（产后组）和25例非产后抑郁症患者（非产后组）为研究对象,并检测其事件相关电位MMN,将其与26名健康志愿者（对照组）的结果进行比较。结果①与对照组相比,产后组、非产后组blMN潜伏期均显著延迟（t=2．84,5．26;P〈0．05）,波幅均显著降低（t=4．16,4．19;P〈0．01）;②与产后组相比,非产后组MMN潜伏期显著延迟,差异有统计学意义（t=3．63,P〈0．05）;两组波幅差异均无统计学意义。结论产后与非产后抑郁症患者信息自动加工功能均受损,非产后抑郁患者受损程度大于产后抑郁患者。提示产后与非产后抑郁症患者大脑对外界信息的自动加工采用不同的机制。