神经肽P物质在糖尿病足溃疡皮肤中的表达变化

目的 探讨神经肽P物质（SP）在糖尿病足溃疡（DFU）皮肤中的表达变化. 方法 免疫组织化学法观察对照（Con）、非糖尿病DFU（NDFU）组和DFU组皮肤组织中SP及增殖细胞核抗原（PC-NA）的表达特点. 结果 SP表达量在Con、NDFU和DFU组分别为79.64、65.12和45.30 （P＜0.01）.PCNA阳性细胞率在Con、NDFU和DFU组分别为（35.120±7.314）％,（33.880±4.055）％和（28.320±9.332）％,NDFU组与Con、DFU组比较差异有统计学意义（P＜0.01）,但NDFU组和Con组比较差异无统计学意义（P＞0.05）. 结论 DFU患者边缘皮肤中SP表达量减少,可能是导致糖尿病患者创面炎症反应异常及创面修复细胞增殖功能受损,从而引起创面修复受损的原因之一.     

Confusing untypical intestinal Behcet's disease:Skip ulcers with severe lower gastrointestinal hemorrhage

Behcet's disease(BD) is a rare and life-long disorder characterized by inflammation of blood vessels throughout the body. BD was originally described in 1937 as a syndrome involving oral and genital ulceration in addition to ocular inflammation. Intestinal BD refers to colonic ulcerative lesions documented by objective measures in patients with BD. Many studies have shown that over 40% of BD patients have gastrointestinal complaints. Symptoms include abdominal pain, diarrhea, nausea, anorexia and abdominal distension. Although gastrointestinal symptoms are common, the demonstration of gastrointestinal ulcers is rare. This so-called intestinal BD accounts for approximately 1% of cases. There is no specific test for BD, and the diagnosis is based on clinical criteria. The manifestations of intestinal BD are similar to those of other colitis conditions such as Crohn's disease or intestinal tuberculosis, thus, it is challenging for gastroenterologists to accurately diagnose intestinal BD in patients with ileocolonic ulcers. However, giant ulcers distributed in the esophagus and ileocecal junction with gastrointestinal hemorrhage are rare in intestinal BD. Here, we present a case of untypical intestinal BD. The patient had recurrent aphthous ulceration of the oral mucosa, and esophageal and ileo-colonic ulceration, but no typical extra-intestinal symptoms. During examination, the patient had massive acute lower gastrointestinal bleeding. The patient underwent ileostomy after an emergency right hemicolectomy and partial ileectomy, and was subsequently diagnosed with incomplete-type intestinal BD by pathology. The literature on the evaluation and management of this condition is reviewed.     

Analysis of oral microbiota in Japanese oral cancer patients using 16S rRNA sequencing

ObjectivesIt is important to determine the cause of increasing oral cancer occurrence and mortality rates in Japan, because the mortality rate has recently decreased in other developed countries. The impact of microbiota in carcinogenesis, especially in the digestive tract has been reported. This study aimed to clarify the relationship between oral cancer and oral microbiota in Japanese patients.MethodsDNA was extracted from salivary samples of 60 oral cancer patients and 80 non-cancer individuals as controls. We performed metagenomic analysis using 16S rRNA amplicon sequencing. Statistical analysis in this study was performed using R (version 3.5.0).ResultsOral cancer patients showed higher α-diversity compared to the control group, and the β-diversity between the two groups differed significantly. Further, there was a significant difference in the abundance ratio of bacterial genera between the two groups. Peptostreptococcus, Fusobacterium, Alloprevotella, and Capnocytophaga were more abundant in the cancer group compared to the control, whereas Rothia and Haemophilus were less abundant (p < 0.01). A negative correlation in the microbiota composition was confirmed between the operational taxonomic units (OTU) of genus Rothia and T-stage progression using the TNM classification method. We performed logistic regression analysis to investigate the impact factor for the oral cancer group, and the result showed that Chao 1 index and sex are statistically significant variables.ConclusionsIn this study, we observed an increased bacterial diversity in oral cancer patients and found distribution changes for some bacteria.     

云南地区HIV感染者疱疹病毒相关口腔损害发病情况分析

目的 探讨HIV感染者中与人类疱疹病毒1、3、4、5、8型相关的口腔损害的发病情况及其与CD4的关系,以期初步明确HIV感染者中常见的口腔疱疹病毒损害的发病特征.方法 对2007年12月至2011年12月昆明市第三人民医院感染—科992例未接受高效抗反转录病毒治疗的HIV感染者进行口腔检查,并收集患者CD4计数等资料,采用SPSS11.3软件建立数据库并进行相关指标的统计学分析.结果 992例患者中发生与疱疹病毒相关的口腔损害209例(21.1％),单纯疱疹、带状疱疹、毛状白斑、复发性阿弗他溃疡和卡波西肉瘤分别占10.8％(107/992)、0.7％ (7/992)、9.1％(90/992)、9.3％(92/992)和0.5％(5/992).单纯疱疹和毛状白斑与CD4计数有关(P＜0.05),而复发性阿弗他溃疡、口腔带状疱疹和卡波西肉瘤与CD4计数无关.结论 云南地区HIV感染者中人类疱疹病毒感染相关口腔损害以单纯疱疹病毒感染、复发性阿弗他溃疡和毛状白斑多见.     

尼古丁对口腔鳞状细胞癌细胞增殖及凋亡的影响

目的 研究尼古丁在口腔鳞状细胞癌细胞增殖和诱导凋亡中的作用,初步探讨尼古丁对口腔鳞状细胞癌发生的作用机制.方法 采用甲基噻唑基四唑法、膜联蛋白V-异硫氰酸荧光素及碘化丙啶双染法和2＇,7＇-二氯荧光黄双乙酸盐荧光探针法检测/不同浓度(0.1、1、10μmol/L)尼古丁作用相同时间(48 h)和相同浓度(1μmol/L)尼古丁作用不同时间(24、48、72 h),对口腔鳞状细胞癌SCC15细胞活力、细胞凋亡和细胞内活性氧含量的影响,以0μmol/L尼古丁为对照组;应用酶联免疫吸附测定、免疫荧光方法检测1 μmol/L尼古丁作用不同时间后口腔鳞状细胞癌SCC15细胞内核因子κB DNA结合活性及核因子κB表达变化.结果 不同浓度尼古丁处理SCC15细胞48 h,流式细胞术检测各组细胞内活性氧水平分别为(98.24±0.04)％、(98.50±0.06)％及(98.61±0.07)％,均较对照组[(96.01±0.58)％]显著增加(P=-0.000);同时各浓度尼古丁处理组细胞生长被促进,且呈浓度依赖性,0.1、1、10μmol/L尼占丁组细胞A值分别为2.19±0.08、2.20±0.11及2.38±0.08,均显著高于对照组(1.93 ±0.13)(P＜0.05).1μmol/L尼古丁处理组的SCC15细胞凋亡率显著高于对照组及0.1、10 μmol/L处理组(P-0.000).1μmol/L尼古丁作用于SCC15细胞72 h细胞生长被显著抑制,与对照组相比差异有统计学意义(P =0.022);1μmol/L尼古丁作用于SCC15细胞24 h后诱导SCC15细胞凋亡最显著且显著高于尼古丁作用48 h和72 h组(P=0.000),各组细胞核内代表DNA结合活性的A值分别为1.509、1 093、0.746,与对照组(A值为0.544)相比核因子κB DNA结合活性均有不同程度增高,提示核因子κB从胞质向胞核中转移,其中尼古丁作用24h活性最高.结论 尼古丁能促进口腔鳞状细胞癌SCC15细胞增殖并诱导少量细胞凋亡,可能是通过激活核转录因子核因子κB发挥作用.     

心理干预在下颌升支矢状劈开截骨术后肌功能康复训练中的作用

目的:探讨心理干预在下颌升支矢状劈开截骨术(sagittal split ramus osteotomy,SSRO)矫治下颌前突畸形术后肌功能康复训练中的作用。方法:60例接受下颌升支矢状劈开术的患者随机分为实验组和对照组,2组均接受系统治疗和肌功能康复训练,实验组在此基础上增加心理干预,测量术前、术后2、4周的张口度;术前、术后4、8周的焦虑自评评分和力。结果:实验组术后4周时张口度已接近术前水平,术后8周时力接近术前水平,焦虑情绪改善,实验组各方面参数相比对照组都有明显提高。结论:系统地心理干预能有效地提高患者健康知识水平,改善认知态度,使焦虑情绪得以改善,医患配合度提高,从而提高治疗有效率。     

结肠孤立性溃疡的诊断及治疗

结肠孤立性溃疡是一种可发生在不同年龄阶段的少见结肠疾病。结肠镜及组织学检查是诊断该病的重要手段。本文就结肠孤立性溃疡的相关问题作一综述。