静脉用丙种球蛋白治疗新生儿重症感染对细胞免疫功能的影响

应用静脉注丙球(IVIG),配合抗生素(An)治疗重症感染新生儿12例,在观察疗效及不良反应的同时,通过检测患儿治疗前后T细胞亚群及白细胞介素Ⅱ(IL-2)产生水平的变化,观察IVIG对细胞免疫功能的影响。结果显示:患儿CD_3~+、CD_4~+、CD_8~+细胞及IL-2产生水平均明显低于正常同龄新生儿。经IVIG+An及单用An治疗后,T细胞各亚群及IL-2水平均明显增高。IVIG组与An组比较,诒疗后IVIG组CD_4~+细胞明显高于An组,IL-2水平也较An组为高,但无统计学意义。疗效观察,中毒症状及原发病体征好转消失时间IVIG组较An组明显缩短。本文还就IVIG对细胞免疫功能影响的可能机制进行了讨论。     

Esthesioneuroblastoma in a young child. Case report

Esthesioneuroblastoma is an uncommon malignant neoplasm that arises from olfactory mucosa, often with intracranial extension.A case report of the youngest victim in the literature (2-year-old boy) is presented.     

Disseminated talc granulomatosis. An unusual finding in a patient with acquired immunodeficiency syndrome and fatal cytomegalovirus infection

The association of disseminated magnesium silicate talc granulomatosis and acquired immunodeficiency syndrome is reported in a male homosexual who used intravenous drugs and who died of overwhelming cytomegalovirus (CMV) infection. Autopsy findings included widespread deposition of talc crystals in the lungs, liver, lymph nodes, bone marrow, and spleen. Typical CMV inclusions were seen in the lungs, kidneys, adrenal glands, gastrointestinal tract, and right eye. There was no evidence of malignancy. Analysis of peripheral blood neutrophil function revealed impaired chemotaxis and chemokinesis, but opsonophagocytosis had remained normal. The CMV infection in the small bowel was extensive and resulted in severe destruction of the muscularis propria and neural plexi, leading to marked dilatation and persistent diarrhea. The terminal course was marked by intractable hypotension, pneumonitis, and malnutrition, which could be attributed respectively to CMV involvement of the adrenal glands, lungs, and small bowel. The etiology and possible role of systemic talc granulomatosis in the development of immunosuppressive illness is reported herein.     

Detecting antibodies with similar reactivity patterns in the HLDA8 blind panel of flow cytometry data

The blind panel collected for the 8th Human Leucocyte Differentiation Antigens Workshop (HLDA8; ) included 49 antibodies of known CD specificities and 76 antibodies of unknown specificity. We have identified groups of antibodies showing similar patterns of reactivity that need to be investigated by biochemical methods to evaluate whether the antibodies within these groups are reacting with the same molecule. Our approach to data analysis was based on the work of Salganik et al. (in press) [Salganik, M.P., Milford E.L., Hardie D.L., Shaw, S., Wand, M.P., in press. Classifying antibodies using flow cytometry data: class prediction and class discovery. Biometrical Journal].     

Fra(2) (q13) and inv(9) (p11q12) in autism: causal relationship?

Twenty individuals with autism or related disorders underwent chromosome analysis and physical examinations with documentation of minor anomalies. Chromosome anomalies were identified in 3: 2 had the heritable folate sensitive fra(2) (q13) site and 1 had an inv(9) (p11q12). No heritable chromosome variants or anomalies were seen in 20 age and sex-matched control individuals. When patients with the fra(2) were excluded from analyses, there was no difference in the frequency of chromosome breaks and/or gaps between the study group and control group. The results of this study suggest that heritable folate sensitive fragile sites and other chromosome variants may be more commonly seen in individuals with autism or related disorders in childhood than in the general population.     

Placental teratoma: A case report

We present a rare case of a placental teratoma found within the fetal membranes of an otherwise normal placenta. Lack of a recognizable umbilical cord and no recognizable skeletal development are used as differential diagnostic criteria for a placental teratoma. In our case, an umbilical cord was absent; nevertheless, the tumor contained two vascular channels covered only by fetal membranes without Wharton's jelly.     

隔药灸对溃疡性结肠炎大鼠结肠NF-κB 和STAT3 活性的免疫调节机制

目的：观察隔药灸改善UC大鼠结肠炎症的效应,通过NF-κB通路和STAT3磷酸化参与免疫调节的作用机制。方法：将大鼠随机分成正常组、UC组和隔药灸组,每组8只。采用4% DSS诱导UC的大鼠模型,造模成功后采用隔药灸大鼠双侧天枢穴,每穴灸2壮艾炷,每天1次,共7次。通过比较组织病理学、血清学促炎症因子的蛋白浓度观察隔药灸干预UC大鼠的效应。采用Western Blot检测结肠组织NF-κB通路及STAT3活性探讨隔药灸改善UC大鼠结肠炎症反应的潜在机制。结果：UC组大鼠结肠组织病理学提示黏膜上皮表面溃疡形成,炎症反应明显,隔药灸能修复结肠上皮损伤,减轻UC大鼠结肠组织的炎症反应。与正常组比较,UC组大鼠血清IL-1β和IL-6蛋白浓度显著升高（P < 0.05,P < 0.01）,p-STAT3磷酸化水平显著增加,pIκB-α和NF-κB p65蛋白表达均显著增加,IκB-α蛋白表达显著降低;与UC组比较,隔药灸组大鼠血清IL-1β和IL-6蛋白浓度显著降低（P < 0.05）,结肠组织NF-κB p65蛋白表达和pIκB-α磷酸化水平均降低,IκB-α蛋白表达增加。结论：隔药灸可能通过抑制NF-κB通路和STAT3磷酸化,减少了促炎症因子IL-1β和IL-6的释放,从而减轻了UC大鼠的结肠炎症反应。