补肾壮骨中药对去势雌性大鼠骨丢失的影响

为探讨补肾壮骨中药(由淫羊藿、鹿角胶、龟板胶、骨碎补、巴戟天、淮山药、山茱萸、生地、肉桂等组成)对骨质疏松症患者骨形成的促进作用及骨丢失的抑制作用,将 40 只雌性大鼠随机分为假手术组、去势组、去势+中药组、去势+密钙息组,应用单光子骨密度仪测各组实验大鼠的左胫骨、右股骨、第 3 腰椎体骨密度.结果表明,去势+中药组骨密度较去势组上升(P＜0.05),接近于假手术组(P＞0.05).提示:补肾壮骨中药可以一定程度减少骨丢失,提高骨密度,对防治妇女绝经后骨质疏松症有效.     

高效液相色谱法分析转移因子多肽分布

利用高效液相色谱法对两种不同的转移因子类考物产品中多肽组份分子量的分布进行分析。应用岛津ＬＣ－６Ａ高效液相色谱第统,使用Ｃ１８反相色谱柱,对流动相、洗脱方式、洗脱时间、色谱条件进行反复试验,使用ＫＨ２ＰＯ４、１ml/min流速、２５min洗脱时间,得到委好的分离效果。方法简便,结果重现性好,适合作为生物工程产品的质控方法。     

甲基强的松龙冲击治疗难治性肾病综合征疗效分析

目的探讨甲基强的松龙冲击疗法对难治性肾病综合征的疗效。方法选择38例难治性肾病综合征患儿,给予甲基强的松龙每次20－30mg／kg,加入10％葡萄糖溶液100ml中静滴、1／d,连用3d,第4－7d口服强的松2mg／(kg·d)。未完全缓解者重复第二疗程。结果冲击治疗后,血浆白蛋白有不同程度的升高,24h尿蛋白定量、血胆固醇、血肌酐(Cr)、尿素氮(BUN)有明显降低,冲击治疗前后相差有高度显著性(P<0．01)。随着MP冲击疗程增加,完全及部分缓解例数增多。结论甲基强的松龙冲击疗法可以使难治性肾病达到较稳定的缓解及保护肾功能,尤其对早期病例效果较好,但必须通过前瞻性对照研究加以证实。     

脑外伤后脑干组织中血管内皮细胞及血浆蛋白分布改变的免疫？…

目的:探讨脑外伤后脑干组织中血脑屏障和神经细胞的病理学改变.方法:采用免疫组化染色显示人体脑干组织中的血管内皮细胞(CD31)和某些血浆蛋白(白蛋白及 IgM).结果:1.在正常脑干组织中, CD31阳性物呈连续的线条状,围成规则的血管腔,其周围无明显间隙;血浆蛋白位于血管内,未见到血浆/蛋白阳性神经细胞或神经纤维.2.脑外伤后,脑干中的 CD31阳性物呈不规则弯曲的小片段状,围成不规则的血管腔,其周围间隙明显增宽;同时可见到白蛋白及IgM阳性神经细胞和神经纤维.结论:脑外伤后,脑干组织中的血脑屏障受到了破坏,而且神经细胞也有不同程度的损伤.     

新型短节段内固定器治疗腰椎滑脱症的临床应用

目的：探讨新型短节段内固定器治疗腰椎滑脱症的临床应用价值。方法：对１８例腰椎滑脱的脊椎应用新型内固定器进行复位、固定,恢复脊椎的正常解剖结构,并自髂嵴后部取骨行横突间植骨融合。结果：术后随访１２￣２４个月,平均１８个月,滑脱复位率达９０％,４￣５月后达到骨性愈合,无螺钉松动,拨出,断裂及脊住骨滑脱现象。结论：新型短节段内固定器治疗腰椎滑脱症复位率高,固定螺钉松动,拨出,断裂及再滑脱等并发症少,疗效     

生肌膏药纱治疗慢性皮肤溃疡病

由于物理或化学因素引起皮肤创伤 ,皮肤创面形成以后 ,诸多原因(或感染 ,或异物 ,或血肿 ,或组织低流量血运不佳等 ) 使局部创面溃烂 ,创面增生和组织坏死液化交替、渗出 ,经久不愈。用中药制剂生肌膏制成膏剂药纱 ,外敷于皮肤疡面 ,收到满意的临床效果。     

Single-cell transcriptome atlas reveals protective characteristics of COVID-19 mRNA vaccine

Messenger RNA (mRNA) vaccines are promising alternatives to conventional vaccines in many aspects. We previously developed a lipopolyplex (LPP)-based mRNA vaccine (SW0123) that demonstrated robust immunogenicity and strong protective capacity against severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infection in mice and rhesus macaques. However, the immune profiles and mechanisms of pulmonary protection induced by SW0123 remain unclear. Through high-resolution single-cell analysis, we found that SW0123 vaccination effectively suppressed SARS-CoV-2-induced inflammatory responses by inhibiting the recruitment of proinflammatory macrophages and increasing the frequency of polymorphonuclear myeloid-derived suppressor cells. In addition, the apoptotic process in both lung epithelial and endothelial cells was significantly inhibited, which was proposed to be one major mechanism contributing to vaccine-induced lung protection. Cell−cell interaction in the lung compartment was also altered by vaccination. These data collectively unravel the mechanisms by which the SW0123 protects against lung damage caused by SARS-CoV-2 infection.     

Study on the developing potentiality of mouse morula produced in vitro or in vivo after vitrification

Great horovement haS been made in the cryopreservation Of inalnlnalian elnbmp since wnttingham['] reported his Pioneering wold about successful cryOPreservationof mouse embryo. It results in the availability of cryOPreserVation of embryos of all stages[']. HOwever, cryopreserved embryos can not avoid the damages by ice crystal,which is a major cause of cen death in the freezing andthawing ProceduresL',']. SO it is necesseq to seareh for anew and more efficient method for embryO cryOPrese…     

双极人工股骨头置换术治疗高龄股骨颈骨折

目的 通过对６６例７０岁以上老年人股骨颈骨折临床分析,探讨其手术可行性、术式选择。方法 回顾分析患者的术前并存症、术前准备、术式选择、麻醉方式、术中情况、术后处理及随诊情况。结果 本组无术中死亡病例,平均住院２８天,平均随访２６个月。良好率６３．６％。结论 ７０岁以上老人股骨颈骨折行双极股骨头置换术治疗是可行的。