目的 探讨我国南方地区鲍曼不动杆菌流行株ST457毒力进化方向。方法 收集南方地区5家大型三甲医院2012年—2015年血和/或痰标本来源的鲍曼不动杆菌菌株,运用不同毒力实验,比较ST457与其他CC92流行克隆株与非流行克隆株的毒力差异。结果 ST457感染患者早期死亡率高;ST457菌株平均产生物膜能力低于ST195和ST208;83.3%的鲍曼不动杆菌临床分离菌株在血清的存活率大于60%,其中43.3%的菌株可在血清内快速繁殖,不同ST型组间、菌血症组和非菌血症组间无差异;不同ST型菌株竞争后,ST457未展现出竞争优势。结论 与传统CC92流行株相比,ST457毒力表型与传统的CC92流行株类似,提示CC92克隆株共进化能力。部分流行株短时间内在血清中快速繁殖,提示其条件致病后潜在的血流感染的能力。

Objective To investigate the virulence of the prevalent clone ST457 of Acinetobacter baumannii in Southern China. Methods Isolates from sputum and/or blood samples from 2012 to 2015 in 5 large differences between clonal complex 92(CC92) and non-CC92 were estimated by biofilm assay, competition assay and serum assay. Results Patients with ST457 infection had high early mortality. The average biofilm production of ST457 was significantly lower than that of ST195 and ST208. In serum assay, 83.3% isolates survived in the serum with over 60% survival rate, of which 43.3% strains reproduced in the serum, with no difference between STs or between bacteremia and non-bacteremia group. After competing with different ST strains, ST457 shows no competitive advantage. Conclusions ST457 had a similar virulence phenotype with the traditional prevalent CC92 clone, suggesting the co-evolutionary ability for CC92 clone. Some clinical isolates were survived in human serum, suggesting the potential capacity of bloodstream infection.

目的 分析76例工业区来源的结核性胸膜炎患者的患病相关因素及临床特征。方法 回顾性收集2018年1月—2020年12月于深圳市中西医结合医院住院的76例工业区来源的结核性胸膜炎患者(观察组)的病历资料和57例同期同区域来源的健康体检者(对照组)的病历资料。运用统计学分析工业区结核性胸膜炎的患病相关因素及临床特征。结果 2组的比较当中,年龄、白蛋白水平、身高、体质量、体质量指数之间的差异具有统计学意义(P<0.05);而多因素Logistic回归分析结果显示,年龄及白蛋白水平则是工业区结核性胸膜炎的独立保护因素(P<0.001,OR=0.728,95% CI:0.634～0.836以及P<0.001,OR=0.908,95% CI:0.874～0.944);工业区结核性胸膜炎的临床症状为咳嗽(71.05%)、发热(48.68%)、胸痛(47.37%),发病季节以春秋季节(27.63%和32.90%)为主。结论 工业区结核性胸膜炎的独立影响因素是年龄及白蛋白水平,临床症状主要为咳嗽、发热、胸痛,好发于春秋季节。

Objective To analyze the relative factors and clinical characteristics of 76 patients with tuberculous pleurisy from industrial area. Methods The medical records of 76 patients with tuberculous pleurisy from industrial areas (observation group) and 57 healthy subjects from the same period and region (control group) who were hospitalized in Shenzhen Hospital of Integrated Traditional Chinese and Western Medicine from January 2018 to December 2020 were retrospectively collected. The correlative factors and clinical characteristics of tuberculous pleurisy in industrial area were analyzed by statistics. Results There were statistically significant differences in age, albumin level, height, weight and body mass index between the two groups (P<0.05). Multivariate logistic regression analysis showed that age and albumin level were independent protective factors for tuberculous pleurisy in industrial areas (P<0.001, OR=0.728, 95% CI: 0.634~0.836 and P<0.001, OR=0.908, 95% CI: 0.874~0.944). The clinical symptoms of tuberculous pleuritis in industrial areas were cough (71.05%), fever (48.68%) and chest pain (47.37%), and the onset season was mainly in spring and autumn (27.63% and 32.90%). Conclusions The independent influencing factors of tuberculous pleuritis in industrial area are age and albumin level. The main clinical symptoms are cough, fever and chest pain, which usually occur in spring and autumn.

目的 研究分析急性呼吸窘迫综合征(ARDS)患者血清甲状腺素变化与疾病的严重程度的相关性。方法 选取2016年1月—2018年1月在我院重症医学科收治的123例急性呼吸窘迫综合征及41例非急性呼吸窘迫综合征患者,根据2012柏林定义,ARDS又再划分为轻度组(26.67 kPa2/FiO₂≤40.00 kPa,PEEP或CPAP≥0.49 kPa)、中度组(13.33 kPa2/FiO₂≤26.67 kPa,PEEP≥0.49 kPa) 及重度缺氧组(PaO₂/FiO₂≤13.33 kPa,PEEP≥0.49 kPa),同时再选取同一时段内在我院进行常规体检的41例健康成人作为对照,对他们血清的甲状腺激素水平测定。结果 健康成人对照组与非ARDS组比较, 血清TSH、FT4、TT4、FTS、TT3水平测定差异没有统计学意义(P＞0.05),ARDS组较另外两组以上指标均有降低(P＜0.05),轻、中、重三组间比较,血清甲状腺素的差异存在统计学意义。结论 急性呼吸窘迫综合征患者血清甲状腺素水平与缺氧程度呈正相关,随着疾病严重程度加大,其水平差异的变化更加明显,动态监测甲状腺素水平对疾病严重程度的判断和对预后的评估具有重大意义。

Objective To analyze serum thyroid hormone level change of acute respiratory distress syndrome and the correlation between the severity of disease. Methods 123 cases (including mild 26.67 kPa2/FiO₂≤40.00 kPa,PEEP or CPAP≥0.49 kPa,moderate 13.33 kPa 2/FiO₂≤26.67 kPa,PEEP≥0.49 kPa and severe PaO₂/FiO₂≤13.33 kPa,PEEP≥0.49 kPa)of patients with acute respiratory distress syndrome and 41 cases of non-ARDS were involved. from January 2016 to January 2018 in our hospital and 41 cases of healthy people by routine check-up in our hospital during the same period were selected,then the serum thyroid hormone levels were determined. Results Compared with healthy control group,TSH、FT4、TT4、FTS、TT3 level in non-ARDS group has no statistical difference(P＞0.05),while compared with the rest of the two groups,all indexes in ARDS group were lower (P＜0.05). And TSH、FT4、TT4、FT3、TT3 levels in moderate ARDS group decreased compared with those in relatively mild ARDS (P＜0.05). The level of each index in severe ARDS group decreased compared with the moderate ARDS group (P＜0.05). There was statistical difference in detection index level in three groups. Conclusion The serum thyroid hormone level of ARDS patients is positively correlated with hypoxemia. As the pathological severity changes ,the level of hypoxemia changes are more apparent. Dynamic monitoring of serum thyroid hormone is of great significance in severity judgement and prognosis evaluation.

目的 观察并评估内毒素性急性肺损伤大鼠吸入一氧化氮后外周血中内皮祖细胞和炎症介质的变化情况。方法 90只SPF级健康大鼠分为3组,A组为正常对照组(n=30),B组为急性肺损伤组(ALI)(n=30), C组为一氧化氮(NO)组(n=30)。分别计算各组外周血内皮祖细胞(Endothelial progenitor cells,EPCs) 数量,同时监测肺组织中白细胞介素-10(Interleukin-10,IL-10)水平和髓过氧化物酶(Myeloperoxidase,MPO)活性。结果 我们成功建立了大鼠的ALI肺损伤模型, C组EPCs数量、MPO活性上升幅度均小于B组、而IL-10上升水平均高于B组,差异有统计学意义(P<0.05)。结论 大鼠吸入一氧化氮可减轻内毒素所致急性肺损伤程度,其机制可能与外周血中内皮祖细胞数量及MPO水平下降和IL-10水平上升有关。

Objective To investigate the effect of nitric oxide(NO) inhalation in endotoxin-induced acute lung injury mice. Methods Ninety SPF mice were randomly assigned to the normal group(group A), ALI group(group B)and ALI+NO group(group C). The number of endothelial progenitor cells was counted and the level of Interleukin-10(IL-10) and myeloperoxidase (MPO) were measured. Results Endotoxin administration resulted in pulmonary edema. The pulmonedema was lightened and the level of MPO were decreased by the inhalation of nitric oxide while the level of IL-10 increased. Conclusion NO inhalation can mitigate acute lung injure. The decline of EPCs and MPO and the increase of IL-10 may be one of the mechanism.