Successful treatment of linezolid-induced severe lactic acidosis with continuous venovenous hemodiafiltration: A case report

Linezolid is an oxazolidinone antibiotic. Linezolid-associated lactic acidosis has been reported in 6.8% of linezolid-treated patients. Lactic acidosis is associated with poor clinical outcomes, with high blood lactate levels resulting in organ dysfunction and mortality. This case report describes the development of lactic acidosis in a 64-year-old Chinese woman who had received 33 days of treatment with antituberculosis drugs and 28 days of treatment with oral linezolid for tuberculous meningitis. Severe lactic acidosis was reversed by withdrawing antituberculosis drugs and using continuous venovenous hemodiafiltration (CVVH). When the patient's condition was stable, she was transferred to the infectious disease department, and antituberculosis drugs, with the exception of linezolid, were reintroduced. This did not result in recurrence of lactic acidosis. The causal relationship between lactic acidosis and linezolid was categorized as ‘probable’ on the Adverse Drug Reaction Probability Scale. This case demonstrates that CVVH has potential as an alternative to discontinuation of linezolid alone for rapid reversal of linezolid-associated severe lactic acidosis.     

数字化技术在可摘局部义齿和全口义齿制作中的应用现状与未来

数字化技术的发展为可摘局部义齿/全口义齿的设计和制作提供了全新的选择,具有高精度、高质量和高效率的特点。其中,本文就数字化印模、数字化设计与数字化制作这三个关键因素进行了重点讨论。     

小鼠肝再生过程中MnSOD作用的初步研究

目的：研究肝切除术后小鼠肝再生过程中锰超氧化物歧化酶（MnSOD）的表达及其活性的变化，探讨MnSOD在肝再生中的作用。方法：采用经典小鼠肝切除模型，将38只雄性BALB/c小鼠，随机分为30%肝切除组（30% PH组）18只，70%肝切除组（70% PH组）18只，以及对照组2只。2个肝切除组分别于术后6 h和1、2、3、5、7 d这6个时间点随机各抽取3只小鼠处死，对照组小鼠在行假手术后即处死。取肝组织，制备冰冻切片使用DHE染色法在激光共聚焦显微镜下检测活性氧（ROS）水平，实时荧光定量PCR检测小鼠肝组织中MnSOD mRNA表达水平，Western blot检测小鼠肝组织中MnSOD蛋白的表达水平，采用MnSOD试剂盒检测小鼠肝组织中的MnSOD活性。结果：肝切除术后，与对照组相比，30% PH组小鼠肝组织ROS水平在术后6 h和1 d增加，MnSOD mRNA表达水平增加（P < 0.05），MnSOD蛋白含量无显著变化（P > 0.05）；MnSOD的活性在术后第1和2天较高，第3和5天较低，第7天恢复。70% PH组小鼠肝组织ROS水平在术后第1~5天均升高，MnSOD mRNA的水平先下降后逐渐恢复，MnSOD的蛋白含量降低，MnSOD的活性在术后第6小时和1天增加，第2~7天均处于降低状态（P均 < 0.05）。结论：在肝切除术后小鼠的肝再生过程迅速启动，尤其是在70% PH后肝细胞迅速增殖，并在术后一段时间逐渐恢复到静息状态，其机制可能与MnSOD含量和活性的下调从而导致ROS升高有关。     

真菌性、细菌性和病毒性肺炎的若干凝血指标变化分析

探讨真菌性、细菌性和病毒性肺炎的若干凝血指标差异性研究。方法 回顾性分析2017 年7 月～2019 年11 月本院肺炎患者128 例与同期门诊健康体检者50 例，分析患者血浆纤维蛋白原（FIB）、凝血酶原时间（PT）和活化部分凝血酶时间（APTT）的水平。结果 三类肺炎组与对照组在FIB、PT 和APTT 水平比较，差异均有统计学意义（P＜0.01）；FIB、PT 水平与病原感染呈正相关，APTT 与病原感染呈负相关。结论FIB、PT、APTT 可以间接提示肺炎感染病原体类型，具有临床意义。