Strontium fructose 1, 6‐diphosphate alleviate cyclophosphamide‐induced oligozoospermia by improving antioxidant and inhibiting testicular apoptosis via FAS/FASL pathway

This study investigated the treatment effects of a new compound, strontium fructose 1, 6‐diphosphate (FDP‐Sr), in cyclophosphamide (CP)‐induced oligozoospermia. FDP‐Sr, with extra high‐energy supply, could reverse male hypogonadism in the testis. Male Wistar rats were randomly divided into three groups: control group (vehicle treated), CP group and CP + FDP‐Sr group. Both CP group and CP + FDP‐Sr groups were orally administered CP (20 mg kg^?1) consecutively for the first 7 days to establish CP‐induced testicular toxic models. Subsequently, CP group was given orally distilled water per day, whereas CP + FDP‐Sr group was received FDP‐Sr (200 mg kg^?1) for 49 days. Compared to the CP group, the FDP‐Sr group showed significantly increased levels of serum testosterone, testis relative weights and epididymal sperm counts in rats. In addition, rats treated by FDP‐Sr showed the recuperative activities of testicular marker enzymes and normalised levels of antioxidants in tissue. Testicular protection of FDP‐Sr was further demonstrated by enhancing expression of P450scc, reducing ability of FAS/FASL and generating cytoprotection in the histopathological study. FDP‐Sr appeared to possess an ability to attenuate CP‐induced reproduction toxicity via the activation of antioxidants and steroidogenesis enzymes, and alleviate oligozoospermia via inhibition of testicular apoptosis by FAS/FASL pathway.     

Comparison between tension band and cerclage with X-Plate and lag screws in treatment of comminuted patellar fractures

BackgroundComminuted patellar fractures are not rare, and the ideal treatment method remains controversial. The present study was conducted to evaluate effects and compare complications of two different methods used to treat comminuted patellar fractures.MethodsFrom March 2010 to August 2016, 102 cases of 34-C2 or 34-C3 comminuted patellar fractures were treated at our hospital, wherein patients received two different treatments: titanium cable tension band with cerclage method (group A) and intrafragmentary screws with X-shaped plating technique (group B). At follow-ups, articular step-off, range of motion (ROM), Lysholm scores, time of union, and complications were recorded and analyzed. Radiographic and clinical data as well as rate of complications were statistically analyzed.ResultsIn total, 87 patients were included in the final analysis (n = 47 in group A and n = 40 in group B). No significant differences were noted in terms of cost of implant, age, gender, rate of 34-C3 fractures, rate of layered inferior pole fractures, postoperative articular step-off and union time. At 2-year follow-up, average Lysholm scores, ROM and rate of complications were (89.0 ± 4.5), (122°±12°) and (27.7%) in group A and (90.2 ± 3.9), (124°±11°) and (17.5%) in group B, respectively, with no significant differences (p > 0.05). The mean time of surgery in group B was shorter than that in group A with significant difference (p < 0.05).ConclusionsTreatment using the intrafragmentary screws and plate method for amenable comminuted patellar fractures achieved similar complication rate and favorable functional outcomes at the 2-year follow-up, which was comparable to the titanium cable tension band with cerclage method. Thus, the intrafragmentary screws and plate method is effective, safe and convenient for 34-C2/C3 comminuted patellar fractures, especially appropriate for patients with layered fragments.     

重视供肝机械灌注研究,推动肝移植高质量发展

随着器官捐献数量不断增加和扩大标准供者(ECD)供肝定义不断拓展,供肝质量必然成为影响肝移植高质量发展的突出问题,也是相关领域的研究重点.最大限度解决器官短缺和推动器官移植高质量发展是我国器官捐献与移植事业发展的方向.近年来,利用机械灌注(MP)对供肝进行灌注、保存、评估及修复,已成为当前国际上提高肝移植质量的研究热点...     

急性脊髓前动脉阻断致颈髓缺血损伤的实验研究

目的观察急性脊髓前动脉阻断后颈髓血流量的变化、组织能量代谢和病理学改变,研究病理机制。方法以家兔为试验模型,阻断C2段脊髓前动脉,在术后6h、24h和72h采用激光多普勒血流测定仪测定颈髓血流灌注量,检测组织能量代谢变化,电镜观察细胞形态学改变。结果术后各时相点血流量下降明显,能量代谢进行性下降,出现急性缺血性改变。结论脊髓前动脉阻断后随着血流量和能量代谢的下降,颈髓组织发生渐进性破坏,但颈髓血供出现部分代偿。     

Frequency of Arteriovenous Shunts in Hepatic Cavernous Hemangiomas in Adults as Seen on Selective Arteriography and Postembolization Radiography

Purpose: To study the frequency and angiographic findings of arteriovenous shunts (AVS) associated with adult cavernous hemangiomas of the liver (CHL) on hepatic artery digital subtraction angiography (DSA) and optimize the imaging technique of DSA to improve its diagnostic efficacy. Methods: We retrospectively analyzed 43 intraarterial DSA procedures performed on 30 adults with CHL. Of the 30 patients 22 were found to have an AVS. Transcatheter arterial embolization with Lipiodol (L-TAE) was performed on 21 of these and radiographs were taken immediately after embolization to observe the distribution of the injected iodized oil. The results were compared with those of the AVS found on DSA images. Results: AVS were identified by DSA in 22 (73.3%) of 30 patients. All AVS were located in the peritumoral liver tissue and had a parallel track appearance, or early filling of small draining veins during the arterial phase of DSA. Radiographs taken immediately after L-TAE in 21 of the 22 cases with AVS showed iodized oil filling a few portal branches or draining veins as a result of incompletely occluded shunts in 11 patients. In 10 patients there was complete occlusion and no filling of any vein, or only the originating end of draining veins filled with iodized oil. No evidence of AVS was found in the other eight patients in this series, and in six of these the DSA was not considered diagnostic. Conclusion: The present study indicates that AVS are frequently seen in adults with CHL. DSA with high-quality images is helpful in identifying small AVS of CHL. The formation of an AVS in CHL may be closely related to the pathological changes in the peritumoral liver tissue.     

中国女子足球运动员运动损伤规律及防治的初步研究

1997年春训时,对国家队等8支女子足球队共175名运动员进行了运动损伤调查及病因分析,结果显示女子足球运动损伤发生率为235.4％,其中急性损伤占41.8％,慢性损伤占58.2％。发病率列前6位的运动损伤依次为踝关节扭伤、膝关节韧带损伤、大腿后肌群拉伤、颈椎劳损、踝部骨关节病、腰肌劳损。损伤原因为训练水平不足、训练缺乏科学性、人为因素、客观原因。针对病因,我们以广东队等4队93名运动员作为防治组(陕西队等3队58人作为自然对照组),采取了综合防治措施。1998年春训时调查结果显示防治组运动损伤发生率为105.4％,而对照组运动损伤发生率为229.3％,二者有显著性差异(P＜0.05),表明在目前条件下,采取本文综合性防治措施是行之有效的。     

新型示踪剂99mTc-利妥昔用于原发性乳腺癌前哨淋巴结活检的初步研究

目的 探讨新型示踪剂^99mTc-利妥昔用于原发性乳腺癌前哨淋巴结活检（SLNB）的可行性和效果。方法 采用^99mTc-利妥昔配合染料专利蓝对85例原发性乳腺癌进行前哨淋巴结活检,并对前哨淋巴结（SLN）进行常规病理检查和以细胞角蛋白19为标志物的免疫组化检查,以确定有无SLN转移。结果^99mTc-利妥昔联合专利蓝检测SLN,检测成功率为96％（82／85）。SLN转移阳性30例（37％,30／82）,其中24例（80％,24／30）常规病理检查为转移阳性,6例（20％,6／30）为免疫组化检出的微转移。30例SLN有转移患者中,12例同时存在其他腋下淋巴结转移,18例为惟一转移淋巴结。1例SLN转移假阴性。灵敏度为97％（30／31）,特异度为100％（51／51）,准确度为99％（81／82）,假阴性率为3％（1／30）,阴性预测值为98％（51／52）,阳性预测值为100％（31／31）。内乳淋巴结显像11例,活检病理检查均为转移阴性。结论 ^99mTc-利妥昔可使SLN显像持久,有利于SLNB的时间选择;^99mTc-利妥昔联合专利蓝行SLNB的准确率、敏感度较高。     

连续性静脉-静脉血液滤过对多器官功能障碍综合征患者血浆细胞因子水平的影响

目的观察连续性静脉．静脉血液滤过（CVVH）对多器官功能障碍综合征（MODS）患者血浆细胞因子TNF-α、IL-1、IL-6、IL-8水平的影响。方法选择MODS患者22例,行CVVH治疗,取治疗前后动脉血做血气分析,取静脉血和滤出液检测有关细胞因子水平。在开始行CVVH前及CVVH治疗后1h．4h、8h分别测量心率和平均动脉压。结果22例患者CVVH治疗后血浆TNF-α、IL-1水平明显下降（P〈0．05）。超滤液中未检出TNF-α,但有较高浓度的IL-1、IL-6和IL-8。与CVVH前比较,患者心率显著下降（P〈0．05）,平均动脉压和氧合指数明显升高（P〈0．05）。CVVH治疗后患者的APACHEⅡ评分显著下降,其下降与置换液速度呈正相关。死亡患者置换液速度与存活患者置换液速度有显著差异（P〈0．05）。能够被CVVH有效清除的细胞因子与置换液速度呈正相关（P〈0．05）。结论CVVH可清除MODS患者血浆中部分细胞因子,并可改善患者血流动力学及氧合功能。加大置换液速度能更好地清除外周血细胞因子,并改善预后。