高速三角破片致猪坐骨神经损伤的特点

目的 探讨高速三角破片致猪坐骨神经损伤的伤情特点. 方法 长白猪14只,体重(34.3±5.2)kg.采用随机数字表法分为A、B两组各7只,用初速为(773.1±12.4)m/s的0.37 g三角破片致伤,分别瞄准猪右后肢外侧坐骨神经体表投影线中点和旁开2 cm射击.观察伤道入口和出口大小、长度,神经与伤道位置关系,伤后48 h观察神经大体及光电镜改变. 结果 破片在伤道内存在不同程度的偏离原射入方向.A、B组分别有5只和1只坐骨神经位于原发伤道内,其中4例出现不间程度断裂;光镜下见神经严重出血水肿、炎细胞浸润,大量神经纤维、轴索断裂,髓鞘着色浅;电镜下见髓鞘严重溃变、轴索变形.A、B组分别有1只和5只位于震荡区内,距原发伤道(2.07±0.45)cm,光镜见神经轻度出血、充血,部分神经纤维、轴索断裂;电镜下可见髓鞘部分分层.A、B组各有1只位于挫伤区内,神经受损程度介于二者之间. 结论 高速三角破片在组织内走行不稳定;其原发伤道内的猪坐骨神经断裂发牛率高,损伤严重,范围广,华勒变性早;位于原发伤道旁的神经亦发生形态学改变,其损害程度与神经和原发伤道距离有关.     

18F-FDG PET/CT在不明原发灶肿瘤中的临床应用价值

目的探讨18F-FDG PET/CT全身显像在不明原发灶肿瘤（CUP）诊断中的临床应用价值。方法回顾分析46例于2015年2月至2016年6月在我院行常规检查未能发现肿瘤原发灶而进一步行18F-FDG PET/CT全身显像查找肿瘤原发灶的转移性肿瘤患者的资料。PET/CT图像分析采用视觉及半定量分析方法。通过病理活检和（或）临床综合诊断、临床随访对结果进行评价。结果46例患者中,18F-FDG PET/CT显像找到原发肿瘤33例,均经过病理活检及临床随访证实;13例未发现原发病灶。18F-FDG PET/CT对不明肿瘤原发灶的检出率为71.7%（33/46）,其中阳性患者中淋巴瘤3例、胃癌2例、食管癌4例、卵巢癌3例、肺癌14例、肝癌2例、尿路上皮癌1例、鼻咽癌2例、多发性骨髓瘤1例、降结肠癌1例。转移方式主要有淋巴结转移32例、骨转移20例、肝转移13例、肺转移9例、胸膜腹膜转移5例、肾上腺转移3例、脑转移4例、皮下转移3例、心包膜转移1例。结论18F-FDG PET/CT全身显像对CUP的检出率显著优于一般常规检查,对临床指导治疗有着重要意义。     

Brief communication: heat-induced accumulation of p53 and hsp72 is suppressed in lung fibroblasts from the SCID mouse

PURPOSE: To investigate how DNA-dependent protein kinase (DNA-PK) contributes to p53-dependent signal transduction after heat shock, thermosensitivity and accumulation of p53 and hsp72 after heat shock in lung fibroblasts derived from the SCID mouse were analysed. MATERIALS AND METHODS: Thermosensitivity at 44 degrees C in colony-forming units and Western blot analysis of p53 and hsp72 were analysed. RESULTS: The results indicated that (1) the thermosensitivity at 44 degrees C of SCID cells was higher than that of parental cells and (2) heat-induced accumulation of p53 and hsp72 was abolished and suppressed in SCID cells as compared with that in parental cells respectively. CONCLUSIONS: The findings suggest that the catalytic subunit of DNA-PK may play an important role upstream of p53 and hsp72, which are possible determinants of cellular thermosensitivity.     

高血糖对中重型颅脑损伤患者预后的影响

目的了解高血糖与颅脑损伤严重程度之间的关系以及控制血糖对颅脑损伤预后的影响。方法我们前瞻性地研究了146例中重型颅脑损伤患者(格拉斯哥昏迷评分GCS3~12分)的血糖,并将血糖高于11.1mmol/L的患者随机分为两组,一组接受强化胰岛素治疗,将血糖控制在6.11mmol/L以下,另一组不接受胰岛治疗,以明确血糖水平同损伤严重程度之间的关系以及控制血糖对预后的影响。结果重型颅脑损伤患者的血糖水平明显高于中型颅脑损伤患者,并且颅内压水平同血糖水平显著相关。同血糖水平高于11.1mmol/L的患者相比,血糖控制在6.11mmol/L以下的患者预后明显改善。结论早期高血糖是颅脑损伤后应激反应的一个组成部分,是预测损伤严重度的一个重要指标,控制血糖可改善颅脑损伤患者的预后。     

保留幽门和迷走神经的胃部分切除手术对早期胃癌的疗效观察

目的 探讨保留幽门和迷走神经的胃部分切除手术（PPG）对早期胃癌的疗效.方法 回顾性分析1995年8月至2005年12月对52例早期胃癌患者行保留幽门和迷走神经的胃部分切除术（PPG组）的临床资料和随访结果;并与同期行远端胃切除术伴淋巴结清除的159例早期胃癌患者（对照组）的临床资料进行比较.结果 PPG组早期胃癌的淋巴结转移率为9.6%,对照组淋巴结转移率为17.0%;两组比较,差异无统计学意义（P＞0.05）.PPG组淋巴结清除范围D1为25%,D1＋α（α=No.7）为25%,D1＋β（β=No.8a和No.9）为34.6%,D2为15.3%;对照组121例（76.1%）D2以下,33例（20.7%）D2,5例（3.1%）D3;两组比较,差异无统计学意义（P＞0.05）.术后累计5年生存率PPG组为92.3%,对照组93.1%,两组差异无统计学意义（P=0.881）.其中淋巴结不同清除程度的累计5年生存率PPG组：D1为100%,D1＋α为92.3%,D1＋β为88.9%,D2为87.5%;对照组：D1为92.3%,D1＋α为93.3%,D1＋β为91.7%,D2为93.9%;两组比较,差异无统计学意义（P＞0.05）.PPG组术后的复发率为5.7%,对照组则为5.6%,两组差异无统计学意义（P＞0.05）.结论 PPG对于早期胃癌的治疗是有效的.     

The remedial effect of soluble interleukin-1 receptor type Ⅱ on endometriosis in the nude mouse model

Objective： Recent studies have shown that the local expression of soluble interleukin （IL） -1 receptor type Ⅱ （slL-1 R Ⅱ ） in endometrial tissue of women with endometriosis is decreased, and the depression of IL-1 R Ⅱ was more significant in infertile women than that in fertile women with endometriosis. In this research, we investigated the remedial effect of slL-1-R Ⅱ administration on endometriosis in the nude mouse model. Methods： Nineteen nude model mice with endometriosis were randomly divided into three groups： group A was treated by intraperitoneal administration with only slL-1 R Ⅱ for two weeks, group B was similarly treated with only IL- 1, and group C （control） was administered saline. After 2 weeks, the size of the ectopic endometrial lesions was calculated, and the expression of vascular endothelial growth factor （VEGF） and B-cell lymphoma leukemia-2 （Bcl- 2） were detected by immunohistochemistry. The IL-8 and VEGF levels in the peritoneal fluid （PF） and serum were also measured by enzyme-linked immunosorbent assay （ELISA）. Results： The mean size of ectopic endometrial lesion did not differ between the three groups （P 〉 0.05）. Compared with the control, the expression of VEGF and Bcl-2 was significantly lower in group A, and higher in group B. In the three groups, the levels of IL-8 in the PF and serum were highest in group A, and lowest in group B. Conclusion： slL-1 R Ⅱ may suppresse hyperplasia of ectopic endometriosis, perhaps by reducing the expression of certain cytokines, such as VEGF, IL-8, and Bcl-2, which could provide a new clinical strategy for the treatment of endometriosis.     

血管内皮细胞生长因子与恶性肿瘤侵袭转移关系的研究进展

恶性肿瘤是导致人类发病和死亡的主要原因之一。恶性肿瘤的病因至今尚未完全明确,但是国内外众多的研究证实其与血管内皮细胞生长因子(VEGFs)家族有关,VEGFs是从牛垂体滤泡星形细胞体外培养液中纯化出来的。在受到恶性肿瘤侵袭和转移的组织中,通过免疫组织化学方法可以检测到这些因子的表达,为恶性肿瘤的筛选、预测和诊疗提供了新的思路。     

运动对预防老年人跌倒效果的网状Meta分析

目的 系统评价运动对预防老年人跌倒的疗效.方法 检索1980年至2020年7月Web of Science、PubMed、Cochrane Library、中国知网数据库有关运动对预防老年人跌倒的随机对照试验,采用Review Manager 5.3对纳入文献进行质量评价,应用R-Studio和Addis 1.16.6...