Reciprocal Interaction Between Intestinal Microbiota and Mucosal Lymphocyte in Cynomolgus Monkeys After Alemtuzumab Treatment

It has been known that the gut microbiota plays a central role in shaping normal mucosal immunity, however, little information is available whether the variability of mucosal lymphocytes impacts the commensal flora. Here, we applied a cynomolgus monkey model to characterize the structure and composition of the gut microbiota in response to lymphocyte depletion and to determine their potential association. Molecular profiling of 16S rDNA showed that the intestinal microbiota composition was perturbed after the depletion of mucosal lymphocytes and were recovered following the repopulation. Some specific bacteria from the orders Lactobacillales, Enterobacteriales and Clostridiales, and the genus Prevotella and Faecalibacterium, were primarily responsible for the variations of the gut microbiota after lymphocyte depletion. Interestingly, the species richness of the ileal mucosal microbiota was associated the proportions of TCRαβ⁺ or TCRγδ⁺ T cells (p < 0.01). We demonstrate for the first time the feature of intestinal microbiota composition after lymphocyte depletion and provide novel evidence that the perturbation of gut microbiota is associated with lymphocyte depletion. It may contribute to understand the relationship between gut commensal microbiota and mucosal immune system. Study results provide insight into biological activity of alemtuzumab in intestinal barrier in organ transplantation.     

Hepatic angiomyolipoma: A retrospective study of 25 cases

PURPOSE: We report our experience of diagnosing and treating hepatic angiomyolipoma (HAML), a rare benign mesenchymal tumor. METHODS: We analyzed retrospectively the clinicopathologic, radiological, and operative data of 25 patients who underwent surgery for HAML at our institute between November 2001 and May 2006. RESULTS: Most patients (20/25) were asymptomatic and had normal liver function. Ultrasonography (US) showed a heterogeneous hyperechoic mass in 13 of 23 patients, precontrast computed tomography (CT) showed that all of 12 lesions scanned were hypodense, and magnetic resonance imaging (MRI) showed hypointensity on T1-weighted images and hyperintensity on T2-weighted images in most (5/6) lesions. Marked enhancement in the arterial phase was seen in 10 of 12 lesions on CT scans and in 6 of 6 lesions on MRI scans. All tumors were composed of varying proportions of smooth muscle, adipose tissue, and blood vessels, and showed positive immunohistochemical staining for HMB-45. All patients underwent partial hepatectomy and there was no evidence of recurrence after a median follow-up of 43 months. CONCLUSION: The radiological features of HAML vary according to its histological components. The definitive diagnosis of HAML is challenging and depends on the presence of HMB-45-positive myoid cells. Hepatic angiomyolipoma is treated effectively with surgery and the prognosis is good.     

多时点动态观测原发性痛经寒凝血瘀证患者的脉图参数变化

目的 分析原发性痛经寒凝血瘀证患者脉图参数的动态变化及其与疼痛程度的相关性.方法 以原发性痛经寒凝血瘀证患者为原发性痛经组,健康者为对照组.在痛经典型发作时予以电针治疗,形成4个观测时点(T0:经前7～10 d,T1:经期痛经典型发作时,T2:针刺镇痛治疗30 min结束即刻,T3:针刺镇痛治疗结束后30 min).运...     

石英纤维桩修复治疗穿髓型楔状缺损的临床研究

目的:探讨石英纤维桩用于修复治疗前牙穿髓型楔状缺损的远期疗效.方法:选择穿髓型楔状缺损的患者76例,随机分为A、B两组,在行完善的根管治疗后,A组采用根管内置入石英纤维桩加强牙颈部抗折性能、复合树脂充填楔状缺损的形式对患牙进行修复治疗,B组采用常规复合树脂单独充填的形式治疗.随访观察24个月,比较两组的成功率.结果:在24个月后,A组成功率为100％,B组有3例充填体边缘密合性已破坏,8例发生齐牙颈部折断,成功率为71.05％,两组远期疗效比较差异有统计学意义(P＜0.0l).结论:使用石英纤维桩可显著增强穿髓型楔状缺损患牙的抗折性能,相比全冠可以最大限度的保留牙体组织,取得了良好的远期效果,可作为穿髓型楔状缺损较好的修复治疗方式.     

脊柱-骨盆矢状面参数对腰椎间盘手术临床疗效的预测价值

目的 探讨术前脊柱-骨盆矢状面参数检测对腰椎间盘突出症患者手术临床疗效的判断价值。方法 选取2017年1月—2018年3月长沙市第一医院和湖南省人民医院骨科腰椎间盘突出症患者90例作为研究对象。采用Quadrant通道下微创经椎间孔腰椎椎体间融合术（TLF）治疗腰椎间盘突出症,术前、术后均进行脊柱-骨盆矢状面检测,治疗后采用视觉模拟评分法（VAS）、Oswestry功能障碍指数（ODI）来评价临床及神经恢复效果,按照治疗效果分为治疗有效组与治疗无效组。结果 以治疗效果为金标准,治疗有效66例,无效24例。脊柱-骨盆矢状面参数预测有效66例,无效24例,矢状面参数预测敏感性为93.9%,特异性为91.7%,准确性为93.3%,阳性预测值96.9%,阴性预测值为84.6%。经Kappa检验评估一致性,κ值为0.83。治疗前矢状面失平衡28例（31.1%）,治疗后矢状面失平衡13例（14.4%）,治疗前后比较,差异有统计学意义（P?<0.05）。治疗后骶骨角（SS）、腰椎前凸（LL）和骨盆透射角（PI）较治疗前降低（P?<0.05）。受试者工作特征（ROC）曲线下面积：骶骨角为0.860,腰椎前凸为0.867,骨盆透射角为0.592。术后2周VAS、ODI评分较术前降低（P?<0.05）。结论 脊柱-骨盆矢状面不平衡与腰椎退行性变有关,Quadrant通道下微创TLF术治疗腰椎间盘突出症效果佳,术前矢状面参数检测有助于预测术后疗效。     

南宁市市区部分高中生蠕形螨感染情况及流行因素调查

目的：了解南宁市市区部分高中生蠕形螨感染情况,分析蠕形螨流行因素,为预防南宁市市区高中生蠕形螨感染提供依据.方法：采用透明胶带粘贴法对南宁市市区434名高中生面部蠕形螨进行检查,并通过问卷调查其性别、年龄等基本信息情况.结果：南宁市市区434名高中生平均感染率为16.82％ （73/434）,男女生感染率分别为13.02％（22/169）、19.25％（51/265）;感染螨种大多为单纯毛囊蠕形螨（68.49％）,少数为单纯皮脂蠕形螨（17.81％）和混合感染（13.70％）.结论：南宁市市区部分高中生蠕形螨感染较为普遍,感染以毛囊蠕形螨为主,集体住宿等因素可能增加蠕形螨的感染.     

急性白血病血清乳酸脱氢酶及α-羟丁酸脱氢酶检测的意义

目的：探讨血清乳酸脱氢酶（LDH）和α-羟丁酸脱氢酶（HBDH）的变化与急性白血病患者疗效关系。方法：观察45名急性白血病人血清LDH和HBDH变化。结果：急性白血病人血清LDH和HBDH显著升高,病情缓解后可降低。LDH和HBDH值与外周血幼稚细胞数呈正相关。结论：血清LDH和HBDH是判定急性白血病疗效的有效指标。     

铸瓷固位钉对牙本质-树脂界面粘结强度的影响

目的:探讨自行研制的铸瓷固位钉对牙本质-复合树脂界面粘结强度的影响,为铸瓷固位钉进一步的临床应用提供实验依据?方法:将40颗离体牙随机分为4组:A组,铸瓷固位钉组;B组,金属自攻螺纹钉组;C组,复合树脂钉组;D组,树脂直接充填组?采用IPS e. max Press热压铸瓷系统制作铸瓷牙本质固位钉,制备标准化牙本质-固位钉-复合树脂块试件,微拉伸实验测试各组试件粘结强度,体视显微镜下观察试件断裂面形态?结果:A?B两组试件粘结强度显著高于C?D两组,差异有统计学意义(P < 0.05);A组与B组?C组与D组组间粘结强度差异无统计学意义(P > 0.05)?A?C?D三组试件断裂模式以牙本质-树脂界面断裂为主,B组以牙本质内聚断裂为主?结论:作为一种新型牙本质固位钉,IPS e.max Press铸瓷固位钉可显著提升牙本质-复合树脂界面的粘结强度?     

非甾体抗炎药致老年人消化性溃疡的临床特点分析

目的：分析非甾体抗炎药（NSAIDs）所致的老年人消化性溃疡的临床特点。方法：收集本院2005年8月至2008年8月的老年人消化性溃疡出血住院患者的临床资料,根据出血前10d内是否服用过NSAIDs,将其分为两组进行比较分析。结果：NSAIDs组与非NSAIDs组溃疡类型、溃疡数目、临床症状等方面均有显著差异。结论：应加强对老年人使用NSAIDs所致消化性溃疡的临床特点的认识,并采取相应措施,减少NSAIDs的不良反应。     

黄芩对牙髓卟啉单胞菌生长、形态影响的体外实验

目的：探讨黄芩治疗牙髓根尖周病的机制。方法：采用试管两倍稀释法测定黄芩对牙髓卟啉单胞菌生长的影响；用扫描电镜观察黄芩对牙髓卟啉单胞菌形态的影响。结果：黄芩对牙髓卟啉单胞菌具有抑制作用，其最小抑菌浓度(MIC)值为1mg／ml；黄芩使菌体体积增大，最终菌体溶解。结论：黄芩对牙髓卟啉单胞菌的生长有抑制作用。