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缺血性卒中引发癫痫的研究进展

神经解剖学杂志 2024年第1期40卷 117-121页

作者：海妮李宇轩温晓敏席烨武胜昔陕西中医药大学基础医学院咸阳712046 空军军医大学基础医学院学员四大队西安710032 空军军医大学基础医学院神经生物学教研室西安710032

缺血性卒中后癫痫(PISE)是一种常见并发症,常导致患者生活质量显著降低,同时增加残疾和死亡的风险。虽然已有多项研究试图关注PISE的治疗,但尚无有效的治疗方案。癫痫发作的风险可能受到多种因素的影响,包括卒中的严重程度、损伤的具体... 详细信息

缺血性卒中后癫痫(PISE)是一种常见并发症,常导致患者生活质量显著降低,同时增加残疾和死亡的风险。虽然已有多项研究试图关注PISE的治疗,但尚无有效的治疗方案。癫痫发作的风险可能受到多种因素的影响,包括卒中的严重程度、损伤的具体位置和范围、患者的年龄以及之前的药物使用史等。然而,这些因素与癫痫之间的确切关系仍有待进一步研究以确认。本综述旨在系统地回顾PISE的流行病学、病理生理学机制、诊断方法和现有治疗策略,并探讨当前研究的限制与针对PISE未来研究的可能方向,从而为临床实践提供理论参考。

关键词：缺血性卒中后癫痫卒中后癫痫评分系统缺血缺氧神经炎症抗癫痫治疗

Simultaneous recovery of rare earth elements and phosphorus from phosphate rock by phosphoric acid leaching and selective precipitation:Towards green process

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Journal of Rare Earths 2019年第6期37卷 652-658页

作者： shengxi wu Longsheng Zhao Liangshi Wang Xiaowei Huang Yunhan Zhang Zongyu Feng Dali Cui National Engineering Research Center for Rare Earth Materials GRINM Group Co.Ltd. School of Metallurgical and Ecological Engineering University of Science and Technology Beijing

Phosphate rock has been considered as one of the potential promising resources for rare earth elements(REEs). But the cost issues and the technical challenges caused by the low content of REEs in ores did hinder the further development of REEs recovery technologies. In order to explore a green process for the recovery of REEs from phosphate rock, this study investigates the effects of phosphoric acid concentration, liquid-to-solid ratio(L/S ratio), leaching time and temperature on the leaching efficiencies of the major components from phosphate rock. A REEs recovery of 94.3% and a phosphorus recovery of 95.3%are achieved under the optimal conditions of attacking phosphate rock using 30%P_2 O_5 acid with an L/S ratio of 10:1 and a stirring speed of 250 r/min at 25 ℃ for 4 h. Then,the selective precipitation of REEs with 81.3% REEs recovery is realized by heating up the leaching solution from 25 to 90 ℃ and keeping for4 h. Thereafter, more than 95% phosphoric acid is recovered by H_2 SO_4 and high purity gypsum, more than95% CaSO_4(tested by XRF), is also produced at the same time. Ultimately, a green process that leaches phosphate rock with H_3 PO_4, selectively precipitates REEs from leaching solution by heating up, recovers H_3 PO_4 with H2 SO4 is proposed. Compared with REE recovery in traditional processes, this process owns the merits of simple operation, energy saving and minimum wastes.

关键词： Rare earth elements Phosphate rock Monocalcium phosphate Minimum

3xTg-AD转基因小鼠抑郁模型的建立及认知相关病理改变与比较

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神经解剖学杂志 2024年第2期40卷 162-170页

作者：唐静荣余小雨郭权宪魏亚诺田家欣武胜昔项捷空军军医大学基础医学院神经生物学教研室西安710032 空军军医大学基础医学院学员四大队西安710032 空军军医大学基础医学院学员五大队西安710032

目的:为分析抑郁状态对阿尔茨海默病(AD)小鼠病理变化的影响,对3xTg-AD小鼠进行慢性社交挫败应激(CSDS)与慢性温和不可预知性应激(CUMS)刺激,建立早期AD诱发抑郁小鼠模型,并检测小鼠认知行为改变、海马区小胶质细胞的活化及神经元的丢... 详细信息

目的:为分析抑郁状态对阿尔茨海默病(AD)小鼠病理变化的影响,对3xTg-AD小鼠进行慢性社交挫败应激(CSDS)与慢性温和不可预知性应激(CUMS)刺激,建立早期AD诱发抑郁小鼠模型,并检测小鼠认知行为改变、海马区小胶质细胞的活化及神经元的丢失情况。方法:3xTg-AD小鼠3月龄时交替进行为期8 d的应激刺激,通过行为学评估小鼠抑郁状态并制订评价标准,进行认知行为的检测及分析,取海马部位脑组织切片进行免疫荧光染色,观察β-淀粉样蛋白(Aβ)沉积和微管相关蛋白(tau)的聚集情况、小胶质细胞活化及神经元的丢失情况。结果:抑郁相关行为学结果提示CSDS+CUMS组小鼠出现抑郁相关表型。认知行为检测发现CSDS+CUMS组小鼠的新物体识别指数明显降低(P<0.05),Morris水迷宫显示CSDS+CUMS组的空间记忆能力显著降低(P<0.05),但条件恐惧实验中CSDS+CUMS组小鼠无明显恐惧记忆丧失。免疫荧光染色结果显示CSDS+CUMS组小鼠海马区4月龄出现Aβ沉积,小胶质细胞的活化增加(P<0.001),并出现一定程度的神经元丢失(P<0.001);8月龄时CSDS+CUMS组小鼠提早出现tau蛋白聚集。结论:我们建立了一种AD诱发抑郁小鼠模型,3xTg-AD小鼠抑郁后提早出现学习记忆能力下降,海马区神经元AD相关病理沉积增多,并伴随小胶质细胞活化及神经元丢失。

关键词：阿尔茨海默病慢性社交挫败应激慢性不可预知温和刺激 β-淀粉样蛋白 tau蛋白海马区小鼠

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布鲁氏菌LPS单克隆抗体的制备与鉴定

重庆理工大学学报（自然科学） 2024年第8期38卷 291-297页

作者：廖倩向梦玲凌洪权董春霞骆璐吴胜昔曾政重庆理工大学药学与生物工程学院重庆400054 重庆市动物疫病预防控制中心重庆401120

制备布鲁氏菌LPS特异性单克隆抗体,为建立布鲁氏菌病血清学及新型免疫传感器检测方法提供有效试剂。将天然提取的布鲁氏菌LPS抗原使用长程免疫法腹腔注射BALB/c小鼠,经过5次常规免疫及1次加强免疫后,取小鼠脾脏细胞与小鼠骨髓瘤细胞(SP2... 详细信息

制备布鲁氏菌LPS特异性单克隆抗体,为建立布鲁氏菌病血清学及新型免疫传感器检测方法提供有效试剂。将天然提取的布鲁氏菌LPS抗原使用长程免疫法腹腔注射BALB/c小鼠,经过5次常规免疫及1次加强免疫后,取小鼠脾脏细胞与小鼠骨髓瘤细胞(SP2/0)融合,使用间接酶联免疫吸附试验(iELISA)对杂交瘤细胞进行筛选,并对纯化后的单克隆抗体进行生物特性鉴定。结果表明:筛选出3株稳定分泌单抗的阳性细胞株,分别命名为2-4A、3-4E、5-10B;经过亚型鉴定,3-8E、2-4A为IgG1亚型,5-10B为IgG2b亚型。将5-10B细胞株使用腹腔注射法制备腹水,并通过Protein A柱纯化腹水。纯化后单抗达到了电泳纯,BCA法测定其浓度最高可达1.431 8 mg·mL^(-1), ELISA效价达到1∶512 000,间接ELISA结果显示制备的抗体具有良好的特异性。研究制备的高特异性、高活性的单克隆抗体可为后续布鲁氏菌病特异性诊断技术研究提供参考。

关键词：布鲁氏菌 LPS 细胞融合单克隆抗体生物特性鉴定

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Precipitation-dissolution behaviors of rare earth ions in H_3PO_4-Ca(H_2PO_4)_2 solutions

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Journal of Rare Earths 2019年第5期37卷 520-527页

作者： shengxi wu Longsheng Zhao Liangshi Wang Xiaowei Huang Yunhan Zhang Zongyu Feng Dali Cui National Engineering Research Center for Rare Earth Materials General Research Institute for Nonferrous Metals School of Metallurgical and Ecological Engineering University of Science and Technology Beijing (USTB)

In order to achieve deeper understanding of rare earth elements(REEs) behaviors during phosphate rock processing with H_3PO_4. The solubility of REEs in Ca(H_2PO_4)_2-H_3PO_4 solutions with various concentrations of Ca(H_2PO_4)_2 at different temperatures were tested. The results demonstrate that REEs solubility decreases sharply with the increasing concentration of Ca(H_2PO_4)_2. Equations between [REE^(3+)] and [H^+],[H^+] and [Ca^(2+)] in Ca(H_2PO_4)_2-H_3PO_4 solutions were built based on the precipitation-dissolution equilibrium of rare earth phosphates and the ionization equilibrium of H_3PO_4. According to the equations, the decreasing mechanism of REEs solubility caused by elevated concentration of Ca(H_2PO_4)_2 was determined. The mechanism can be illustrated as that the elevated concentration of [H_2 PO_4^-] decreases the concentration of hydrogen ion by retarding the ionization process of H_3PO_4 and directly promotes the precipitation of rare earth phosphates. Furthermore, it can be easy deduced that similar effect would be caused by the other cation impurities(Fe^(3+), Al^(3+), etc.) on REEs solubility based on the mechanism. In addition, superimposed reduction effect on REEs solubility caused by the elevated concentration of Ca(H_2PO_4)_2 and the elevated temperature is found. This superimposed effect leads to a super low solubility of REEs in Ca(H_2PO_4)_2-H_3PO_4 solution. On the basis of the experimental study, outlooks and suggestions for further development of REEs recovery method are given.

关键词： Rare earth elements Phosphoric acid Monocalcium phosphate Solubility Temperature

弓形虫表面主要抗原1(SAG1)蛋白的原核表达与鉴定

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黑龙江畜牧兽医 2024年第12期 69-73,128页

作者：代琴骆璐董春霞凌洪权吴胜昔曾政秦萍韦广苗重庆理工大学药学与生物工程学院重庆400054 重庆市动物疫病预防与控制中心重庆401120

为了实现弓形虫主要表面抗原1(surface antigen 1,SAG1)蛋白在原核表达系统中的高效表达,试验根据GenBank中弓形虫SAG1基因序列(登录号为S76248.1)及大肠杆菌密码子偏好性对目的基因序列进行优化设计,以pET-32a(+)为表达载体构建重组表... 详细信息

为了实现弓形虫主要表面抗原1(surface antigen 1,SAG1)蛋白在原核表达系统中的高效表达,试验根据GenBank中弓形虫SAG1基因序列(登录号为S76248.1)及大肠杆菌密码子偏好性对目的基因序列进行优化设计,以pET-32a(+)为表达载体构建重组表达质粒pET32a(+)-SAG1,并将其转化至大肠杆菌BL21(DE3)感受态细胞中,用异丙基-β-D-硫代吡喃半乳糖苷(IPTG)对重组菌进行诱导,表达重组蛋白,通过优化诱导条件实现对重组蛋白的大量表达,使用NGC^(TM)层析纯化系统纯化重组蛋白,并分别以抗His标签单克隆抗体和犬弓形虫阳性血清作为一抗、羊抗鼠IgG-HRP和HRP-兔抗犬作为二抗对重组蛋白进行Western-blot鉴定。结果表明:重组表达质粒pET32a(+)-SAG1经双酶切分别在5 900 bp和1 020 bp处出现1条载体条带和1条目的基因条带,与预期结果相符;重组蛋白大小为55 ku且以包涵体的形式成功表达,当诱导条件为25℃、0.4 mmol/L IPTG诱导8 h时重组蛋白的表达量最高;纯化后的重组蛋白条带单一,纯度较高,3个样品质量浓度分别为0.409 5,0.368 5,0.451 9 mg/mL;表达的重组蛋白与抗His标签单克隆抗体和犬弓形虫阳性血清均能特异性结合。说明在大肠杆菌中成功表达了弓形虫SAG1重组蛋白,纯化后的重组蛋白纯度和质量浓度较高,且具有良好的反应原性。

关键词：弓形虫 SAG1 原核表达镍柱纯化蛋白免疫印迹

有氧运动治疗慢性痛及情绪障碍共病的研究进展

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神经解剖学杂志 2024年第3期40卷 383-386页

作者：黄文烨孟凡成钟建心崔玥汪涛武胜昔薛茜徐晖西北大学生命科学学院西安710069 空军军医大学基础医学院神经生物学教研室空军军医大学基础医学院五大队十九队西安710032

慢性痛与焦虑、抑郁等情绪障碍相互作用形成恶性循环。目前药物治疗慢性痛及情绪障碍效果不佳,且常伴有成瘾、大脑发育改变等副作用。近年来,针对慢性痛和情绪障碍的非药物治疗手段越来越受到关注,其中有氧运动能明显减轻慢性痛感觉,改... 详细信息

慢性痛与焦虑、抑郁等情绪障碍相互作用形成恶性循环。目前药物治疗慢性痛及情绪障碍效果不佳,且常伴有成瘾、大脑发育改变等副作用。近年来,针对慢性痛和情绪障碍的非药物治疗手段越来越受到关注,其中有氧运动能明显减轻慢性痛感觉,改善焦虑、抑郁等负性情绪,但是有氧运动如何减缓慢性痛及其情绪障碍共病的潜在神经分子机制尚不明确。有氧运动是以有氧代谢提供能量的运动,大量临床和实验研究表明有氧运动条件下神经营养因子、炎性细胞因子、神经递质、内源性阿片肽等分子可能参与缓解慢性痛及及负性情绪的发生和发展,本文综述了有氧运动治疗慢性痛及其情绪障碍共病潜在神经分子机制的研究进展。

关键词：运动慢性痛情绪障碍神经机制

小鼠未定带腹侧区GABA能神经元参与慢性痒的形态学研究

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神经解剖学杂志 2024年第1期40卷 1-8页

作者：彭诗皓樊泽戴梓怡张怡文史晓烔朱媛媛武胜昔黄静空军军医大学基础医学院神经生物学教研室西安710032 空军军医大学口腔医院麻醉科西安710032 空军军医大学基础医学院学员五大队西安710032

目的:在慢性瘙痒模型上检测小鼠的痒行为和焦虑、抑郁样行为,并观察未定带腹侧区(ZIv)内γ-氨基丁酸(GABA)能神经元的激活情况,为其参与痒觉信息的调控提供形态学证据。方法:应用二苯基环丙烯酮(DCP)在谷氨酸脱羧酶67-绿色荧光蛋白(GAD6... 详细信息

目的:在慢性瘙痒模型上检测小鼠的痒行为和焦虑、抑郁样行为,并观察未定带腹侧区(ZIv)内γ-氨基丁酸(GABA)能神经元的激活情况,为其参与痒觉信息的调控提供形态学证据。方法:应用二苯基环丙烯酮(DCP)在谷氨酸脱羧酶67-绿色荧光蛋白(GAD67-GFP)基因敲入小鼠上建立慢性瘙痒模型,然后运用视频跟踪系统检测痒行为,以验证模型制备是否成功。运用高架十字迷宫实验、悬尾实验检测慢性痒模型小鼠的焦虑、抑郁样行为。利用GAD67-GFP小鼠观察未定带(ZI)各区域内GABA能神经元的分布情况,并结合免疫荧光染色方法分别观察对照组和DCP组小鼠ZIv内GABA能神经元与FOS的双标情况。结果:在GAD67-GFP小鼠的脑切片上可观察到GABA能神经元在未定带各亚区均有分布,且更集中于ZIv。DCP组小鼠抓挠次数显著高于对照组小鼠(P<0.001)。悬尾实验中DCP组小鼠完全不动时间显著高于对照组小鼠,出现抑郁样不动状态。高架十字迷宫实验结果显示DCP组小鼠与对照组相比,进入十字交叉区域的次数和时间占比均明显减少,表现出焦虑样行为。免疫荧光染色结果显示,DCP组小鼠ZIv内FOS阳性细胞数量明显高于对照组,且在该区域观察到大量的FOS与GABA能神经元的共标细胞。结论:小鼠未定带以GABA能神经元分布为主,且更集中于ZIv;慢性痒状态下,ZIv内GABA能神经元激活,为ZIv内GABA能神经元参与慢性痒及其伴发的负性情绪提供了形态学证据。

关键词：未定带 GABA能神经元痒觉负性情绪小鼠

Elevated axonal membrane permeability and its correlation with motor deficits in an animal model of multiple sclerosis

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Translational Neurodegeneration 2017年第1期6卷 29-36页

作者： Gary Leung Melissa Tully Jonathan Tang shengxi wu Riyi Shi Department of Basic Medical Sciences College of Veterinary MedicinePurdue UniversityWest LafayetteIN 47907USA Weldon School of Biomedical Engineering Purdue UniversityWest LafayetteIN 47907USA MSTP program Indiana University School of MedicineIndianapolisINUSA Department of Neurobiology Fourth Military Medical UniversityXi’anChina

Background:It is increasingly clear that in addition to myelin disruption,axonal degeneration may also represent a key pathology in multiple sclerosis(MS).Hence,elucidating the mechanisms of axonal degeneration may not only enhance our understanding of the overall MS pathology,but also elucidate additional therapeutic *** objective of this study is assess the degree of axonal membrane disruption and its significance in motor deficits in EAE ***:Experimental Autoimmune Encephalomyelitis was induced in mice by subcutaneous injection of myelin oligodendrocyte glycoprotein/complete Freud’s adjuvant emulsion,followed by two intraperitoneal injections of pertussis *** assessment was performed using a 5-point *** Peroxidase Exclusion test was used to quantify the disruption of axonal *** glycol was prepared as a 30%(w/v)solution in phosphate buffered saline and injected ***:We have found evidence of axonal membrane disruption in EAE mice when symptoms peak and to a lesser degree,in the pre-symptomatic stage of EAE ***,polyethylene glycol(PEG),a known membrane fusogen,significantly reduces axonal membrane disruption in EAE *** PEG-mediated membrane repair was accompanied by significant amelioration of behavioral deficits,including a delay in the emergence of motor deficits,a delay of the emergence of peak symptom,and a reduction in the severity of peak ***:The current study is the first indication that axonal membrane disruption may be an important part of the pathology in EAE mice and may underlies behavioral *** study also presents the initial observation that PEG may be a therapeutic agent that can repair axolemma,arrest axonal degeneration and reduce motor deficits in EAE mice.

关键词： Multiple sclerosis EAE Axonal membrane damage Polyethylene glycol Acrolein Horseradish Peroxidase Membrane permeability Neurodegeneration