何首乌致药物性肝损伤的病理学特点

目的了解何首乌致药物性肝损伤(Polygonum multiflorum-associated drug induce liver injury,PM-DILI)的临床病理学特点。方法收集2019年3月1日至2021年3月1日深圳市第三人民医院收治的8例PM-DILI患者临床资料。肝穿组织进行苏木素-伊红染色、网状纤维染色、Masson三色染色、铁、铜特殊染色和免疫组织化学染色,显微镜下观察分析。结果8例PM-DILI患者男女比为1∶1,平均年龄43岁,其中6例为急性PM-DILI,2例慢性为PM-DILI。入院血清学检查异常主要包括转氨酶升高和淤胆均为7例。主要组织病理学改变为点灶状坏死8例、界面炎5例、融合坏死4例,融合坏死以肝腺泡3带为主,不伴或伴少数炎细胞浸润;胆汁淤积5例,为肝腺泡3带的肝细胞、毛细胆管内淤胆,不伴或伴少数炎细胞浸润;中央静脉炎3例;病程长者可发生肝纤维化,甚至肝硬化2例。结论肝腺泡3带为主的急性淤胆和肝细胞坏死是PM-DILI主要组织学表现,严重者可发生静脉炎等血管损伤。     

癫痫发作后状态及其临床意义

癫痫发作后状态(PIS)是指癫痫发作停止到恢复至发病前水平的异常状态,包括认知、运动、感觉、自主神经和精神行为等异常,症状多样,严重程度不一,持续数秒至数天不等,对患者的健康和生活质量产生很大影响。然而,目前国内外相关的研究较少,临床医生对此缺乏正确认识,容易误诊误治。本文将从PIS的定义、病理生理机制、临床表现、诊断和鉴别诊断、临床意义以及干预策略等进行综述,以提高临床医生的认识,并为今后临床研究提供参考。     

中医药治疗动脉粥样硬化临床研究进展

中医药防治动脉粥样硬化的研究具有良好的实践基础和应用前景,治疗方法可归于四类,即活血化瘀、化痰调脂、痰瘀同治、扶正祛邪,研究者辨证施治,多在临床上取得了满意的疗效。目前研究仍存在一些亟待解决的问题:首先,中医药防治动脉粥样硬化临床研究重复性差,缺乏大样本、多中心、高质量的临床研究及系统深入的实验研究;其次,对专家经验方及中药复方研究不够深入,临床药效物质基础不明确,缺乏对其作用机制的深入挖掘;再次,目前的研究不够系统和全面,主要集中在对动脉粥样硬化的形成和发展过程的研究,对斑块易损性研究相对较少。针对上述问题,今后应加强中医药治疗动脉粥样硬化的基础及临床研究,为治疗提供更加明确的理论依据和临床证据;同时,建立具有中医特色的研究模式,以中医宏观辨证理论为指导,利用现代医学技术,参考现代中药药理实验结果选药组方,扩大辨证选药思路,加强对中药方剂配伍规律的研究,以及对其有效成分的分离提取、鉴定和作用机制研究,并将传统组方理论与针对发病机制的对病治疗相结合,多角度、多层次探索中医药的作用机理。此外,应不断深入探索动脉粥样硬化的发病机制,并结合细胞工程、分子生物学及基因科学,积极研究中医药的药效学基础和机制。     

糖尿病黄斑水肿患者病变程度与脉络膜厚度的关系

目的　利用频域光学相干断层扫描深度增强（enhanced depth imaging spectral domain optical coherence tomography，EDI SD-OCT）观察糖尿病黄斑水肿（diabetic macular edema，DME）患者脉络膜厚度（choroidal thickness，CT）的变化及结构特点，探讨DME病变程度与CT的关系。方法　纳入2型糖尿病患者共123例204眼，其中69眼诊断为DME（DME组），135眼无黄斑水肿为对照组。DME眼依据OCT形态学特点进一步分为视网膜弥漫性增厚（diffuse retinal thickness，DRT）型（34眼）、黄斑囊样水肿（cystoid macular edema，CME）型（19眼）和浆液性视网膜脱离（serous retinal detachment，SRD）型（16眼），利用EDI-OCT分别测量黄斑中心凹下CT和以黄斑为中心上、下、鼻、颞500 μm、1000 μm、1500 μm、2000 μm处CT。结果　DME组黄斑中心凹下CT为（326.72±90.15）μm，对照组为（320.17±106.46）μm，两组之间无统计学差异，但黄斑中心凹下CT与视网膜厚度间具有明显正相关关系（r=0.270，P=0.025）。DME亚型CT分别为:DRT型（303.94±81.47）μm、CME型（304.42±73.98）μm和SRD型（401.63±88.80）μm，SRD型CT明显高于其他亚型（P<0.05），此外，SRD型的周边CT同样呈现均匀一致的增厚；鼻侧CT从500 μm至2000 μm呈距离敏感性降低（P<0.05），但SRD型鼻侧CT降低幅度明显变缓（P=0.195）。结论　SRD型黄斑水肿患者CT在中心凹下及周边部均显著增厚，CT与DME病变程度之间有一定相关性。     

A Tool to Assess Patient and Surrogate Knowledge About the POLST (Physician Orders for Life-Sustaining Treatment) Program

ContextIt is especially important that patients are well informed when making high-stakes, preference-sensitive decisions like those on the Physician Orders for Life-Sustaining Treatment (POLST) form. However, there is currently no way to easily evaluate whether patients understand key concepts when making these important decisions.ObjectivesTo develop a POLST knowledge survey.MethodsExpert (n = 62) ratings of key POLST facts were used to select items for a POLST knowledge survey. The survey was administered to nursing facility residents (n = 97) and surrogate decision-makers (n = 112). A subset (n = 135) were re-administered the survey after a standardized advance care planning discussion to assess the scale's responsiveness to change.ResultsThe 19-item survey demonstrated adequate reliability (α = 0.72.). Residents' scores (x = 11.4, standard deviation 3.3) were significantly lower than surrogate scores (x = 14.7, standard deviation 2.5) (P < 0.001). Scores for both groups increased significantly after administration of a standardized advance care planning discussion (P < 0.001). Although being a surrogate, age, race, education, cognitive functioning, and health literacy were significantly associated with higher POLST Knowledge Survey scores in univariate analyses, only being a surrogate (P < 0.001) and being white (P = 0.028) remained significantly associated with higher scores in multivariate analyses.ConclusionThe 19-item POLST Knowledge Survey demonstrated adequate reliability and responsiveness to change. Findings suggest the survey could be used to identify knowledge deficits and provide targeted education to ensure adequate understanding of key clinical decisions when completing POLST.     

Effect of Electroacupuncture on Spermatogenesis in Rats with Oligozoospermia of Insufficiency of Shen (Kidney) Essence Syndrome

Objective: To assess the effect of electroacupuncture(EA) on expression of cytoskeletal proteins from Sertoli cells(SCs) and spermatogenesis in rats with oligozoospermia of insufficiency of Shen(Kidney)essence syndrome(OIKES).Methods: Twenty healthy male Sprague-Dawley rats were randomly assigned to four groups using a random number table: control,tripterygium glycosides(TG) treatment,sham and EA groups(n=5 in each group).A rat model of OIKES was established by oral gavage with TG.The EA group was treated with TG and received EA at Shenshu(BL 23) and Zusanli(ST 36) acupoints for 20 min,once daily for 30 days,while the sham group received EA at identical acupoints with skin penetration without stimulation.After 30 days,the ?nal body weight and coef?cients for the testis and epididymis were calculated and sperm parameters were measured.Immunohistochemical analyses were performed to detect expression of vimentin and α-tubulin in SCs and proliferating cell nuclear antigen(PCNA) immunoreactivity in germ cells.Apoptosis in germ cells was quanti?ed by the transferase biotin-dUTP nick end labeling assay.Results: Compared with the control group,the final body weight and testis/epididymis coefficients of rats in the TG-treated group were not significantly different,but the sperm count and motility were lower(P0.05).Expressions of vimentin and α-tubulin were also signi?cantly weaker(P0.01).The PCNA immunoreactivity of germ cells was decreased(P=0.059),whereas the apoptotic index of germ cells was increased signi?cantly(P0.01).In contrast,EA at BL 23 and ST 36 acupoints signi?cantly improved the ?nal body weight as well as the sperm count,concentration and motility(P0.01 or P0.05).EA increased expression of vimentin and α-tubulin in SCs markedly,and signi?cantly enhanced PCNA immunoreactivity with decreased apoptosis in germ cells(P0.01 or P0.05).Conclusions: EA at BL 23 and ST 36 acupoints has protective effects on spermatogenesis in rats with OIKES.This effect seems to be achieved by attenuating TG-induced disruption of cytoskeletal protein in SCs.