半胱氨酸对训练小鼠力竭运动后不同组织自由基代谢和血清转氨酶活性的影响

选用雄性ICR小鼠 2 0只 ,随机分成 2组 ,即运动组和运动 +半胱氨酸组 ,训练 30天后进行 1次性力竭游泳运动 ,观察半胱氨酸对训练小鼠力竭运动后不同组织自由基代谢和血清转氨酶活性的影响。结果表明 :(1)运动 +半胱氨酸组小鼠力竭游泳时间明显长于运动组 (P <0 0 5 ) ;(2 )运动 +半胱氨酸组小鼠力竭游泳后即刻不同组织SOD活性显著高于运动组 (P <0 0 5 ) ;(3)运动半胱氨组小鼠力竭游泳后即刻不同组织MDA含量显著低于运动组 (P <0 0 5 ) ;(4)灌服半胱氨酸力竭游泳后即刻血清GPT、GOT活性显著低于运动组 (P <0 0 5 )。结论 :半胱氨酸具有提高力竭游泳后小鼠不同组织SOD活性 ,降低MDA含量 ,降低血清GPT、GOT活性和提高运动能力的作用。     

不同断奶体重羔羊的育肥效果分析

选择 2月龄左右断奶的新疆细毛羊羔羊 12 3只 ,按断奶体重大小不同分为 4组 ,在同一暖棚内育肥 10 0d。结果表明 ,1、2、3、4组日增重分别达到 2 10± 3.75、2 19± 2 .91、2 0 7± 3.6 1和 153± 5.2 7g ,1、2、3组日增重与第 4组日增重差异显著 (P <0 .0 5) ,1、2、3组之间日增重差异不显著 (P >0 .0 5) ;每组育肥羔羊增收分别为 4 3.12、54.2 2、4 7.82和 19.75元 /只 ,经济效益显著。     

家兔饲育技术及理论基础

家兔是夜行性动物,群居。与其它许多哺乳动物不同,母兔一般比公兔大。听觉、嗅觉发达,交配后排卵。有食软粪(在饲育箱内排粪)、食仔兔、食毛等习惯性嗜癖。目前世界上常见的家兔品种有日本白色兔、弗兰德斯大型兔、加利福尼亚兔等(肉用兔),比利时兔、青紫兰兔、新西兰白兔等(毛皮用种),毛用种以安哥拉兔为最著名。     

德国美利奴羊×阿勒泰羊F1与阿勒泰羊羔羊育肥对比试验

选择健康无病、体重相近的4月龄德国美利奴羊(DM)×阿勒泰羊(Alt)F1与阿勒泰羔羊各21只,研究在同样的舍饲饲养条件下,进行短期育肥,比较羔羊增重效果.利用SPSS16.0统计软件分析,结果表明:舍饲环境下6月龄德国美利奴羊(DM)×阿勒泰羊(Alt)F1和阿勒泰羊活重分别为41.47kg与38.75 kg;日增重分别为0.25 kg、0.20kg,德国美利奴羊(DM)×阿勒泰羊(Alt)F1活重和日增重明显高于阿勒泰羔羊,差异显著(P＜0.05).     

去细胞异体神经材料复合碱性成纤维细胞生长因子修复周围神经缺损

目的　研究成纤维细胞生长因子 (bFGF)和去细胞异体神经联合修复周围神经缺损的效果。　方法　将日本大耳白兔 16只随机分为实验组和对照组。实验组用 3cm去细胞异体神经材料 (来源于新西兰兔 )修复异体神经缺损 ,术后每日注射bFGF到移植体周围 ,对照组注射等渗盐水。 2 0周进行形态和功能学检测。　结果　实验组白兔诱发电位幅值及神经传导速度恢复率分别为 (6 7.5 9± 2 9.6 3) %和 (5 9.79± 2 1.11) % ,显著高于对照组的 (4 9.0 7± 15 .74 ) %和 (36 .85± 18.6 9) % (P <0 .0 5 )。实验组移植体中央再生有髓纤维数为 (87.2 6± 2 0 .18)根 / 10 4μm2 ,显著高于对照组的 (6 8.79± 17.92 )根 / 10 4μm2 (P <0 .0 5 )。　结论　去细胞异体神经材料结合bFGF能较满意地修复一定长度神经缺损。     

重症减压病血管内皮及凝血纤溶系统变化的实验研究

目的观察实验兔发生重症减压病过程中血管内皮及凝血纤溶系统相关指标的变化,分析重症减压病致死的可能机制。方法14只新西兰白兔,在0·55MPa下停留35min,再升至0·7MPa停留35min,于4min内匀速减压出舱。检测加压前、高压停留中、减压后兔血浆内皮素-1(ET-1)、血管性血友病因子(vWF)、纤维蛋白原(FIB)、D-二聚体(D-Dimer)、凝血因子Ⅷ(FⅧ)活性、纤溶酶原(PLG)、纤溶酶抑制物(PL-IN)、凝血酶原时间(PT)、部分活化凝血活酶时间(APTT)等指标。比较减压后存活动物与死亡动物以上指标变化的特点。结果8只兔于减压后30min内死亡,6只存活且观察24h后未遗留任何减压病症状。0·55MPa下停留30min后,兔血浆ET-1由加压前的1·33±0·33pg/ml升至2·74±0·87pg/ml;vWF活力由2·62±0·69%升至3·64±1·48%。与高压停留中比较,快速减压后死亡组兔FIB减少量为0·92±0·12g/L,D-Dimer减少量为55·63±12·12ng/ml,均明显大于存活组(P<0·01)。结论实验兔于高压停留阶段已有血管活性物质释放,快速减压后凝血激活程度更强,纤维蛋白原消耗更多,而继发性纤溶反应较弱的动物死亡的可能性更大。     

兔断奶前后体重的遗传力

本研究用16(断奶前)、28和70日龄不同体重的兔进行实验。作者对一些特性(5、6、7)进行了遗传测定。指出,当计算母兔的基础遗传力时,应有较强的母系和优势效应。 材料和方法 研究是在“匍诺加动物遗传协会”(“Instituto di Zootecnica Generale diPerugia”)试验站进行的,采用新西兰白兔作为实验动物。     

兔肝VX2移植癌模型的病理学和影像学表现

目的　采用三种不同植瘤方式建立稳定的介入实验研究兔VX2 移植性肝癌模型。方法　 6 0只新西兰白兔随机分 3组 ,每组 2 0只。第一组 ,将VX2 瘤细胞 (约 5× 10 7个 )经肝动脉灌注入兔的肝脏 ;第二组 ,将VX2 瘤细胞 (约 5× 10 7个 )经剖腹途径接种于兔的肝左叶 ;第 3组 ,将瘤组织块 (约含 10 6～ 10 8个瘤细胞 )经剖腹途径植入兔肝左叶。对三组进行比较观察 :①不同方式植瘤的成活率 ;②肝内肿瘤体积变化和肿瘤生长率 ;③大体及镜下 (光镜和电镜 )瘤组织形态特征 ;④成熟模型的DSA表现。结果　①三组植瘤成活率分别为 7/ 2 0、10 / 2 0、19/ 2 0 ,第三组植瘤成活率最高 (Ρ <0 .0 5 ) ,其瘤体呈指数性生长 ;②病理学及CT表明该瘤在肝组织中呈浸润式生长 ,其性状与移植于兔其它部位的VX2 鳞状细胞癌特征相似 ;③DSA影像示移植性肝肿瘤具有丰富的血供。结论　成功建立了兔VX2 移植性肝癌模型 ,瘤组织块种植方式成功率明显高于其他两种方法 ,为肝癌介入治疗的实验研究提供了可靠的大型动物模型     

纯种兔和杂交兔胴体品质的评价

引言 美国商品兔生产者大都习惯利用纯种新西兰白兔(NZW),少数利用美国加利福尼亚兔(CAL)(Tukefahr等,1983)。美国现有40多个兔种中存在的差异,有可能提供多个遗传组合,且适于不同环境和生产系统。尽管在欧洲商业杂交已成功地改善了兔的繁殖性能、生长特性和胴体品质(Masoero,1982,Lebas等,1984),而且美国已通过杂交提高了其它家畜品种如肉用仔鸡,肉牛、猪和羔羊的生产率(Acker,1983),但在美国还没有对纯种和杂种兔的生产性能进行广泛的调查。弗兰德斯大型兔作为终端父本对改进活兔售销和胴体重(Carregd,     

用硫酸铜做兔子饲料添加剂

兔子日粮中添加硫酸铜对促进生长和减少肠炎有很好的效果。Omole用断奶新西兰白兔进行了补铜试验。基础日粮为高能、低纤维的玉米和西非高粱,处理组包括低(14％)、中(18％)和高(22％)三种粗蛋白水平,铜的添加量分别为0、100、150和200ppm。低、中和高三个蛋白水平组,平均日增重分别是18.6、20.5和20.3克。     

Knee injury and Osteoarthritis Outcome Score (KOOS) - validation of a Swedish version

The Knee injury and Osteoarthritis Outcome Score (KOOS) is a self-administered instrument measuring outcome after knee injury at impairment, disability, and handicap level in five subscales. Reliability, validity, and responsiveness of a Swedish version was assessed in 142 patients who underwent arthroscopy because of injury to the menisci, anterior cruciate ligament, or cartilage of the knee. The clinimetric properties were found to be good and comparable to the American version of the KOOS. Comparison to the Short Form-36 and the Lysholm knee scoring scale revealed expected correlations and construct validity. Item by item, symptoms and functional limitations were compared between diagnostic groups. High responsiveness was found three months after arthroscopic partial meniscectomy for all subscales but Activities of Daily Living.     

The acutely limping child

Acute limping may be the result of multiple pathologies in children. The differential diagnosis varies based on the age of the child. Irrespective of age, the initial imaging work-up includes AP and frog leg radiographs of the pelvis and ultrasound; MRI may sometimes be helpful. In children less than 3 years, infections and trauma are most frequent. MRI is the imaging modality of choice when osteomyelitis is clinically suspected. Between the ages of 3 and 10 years, transient synovitis of the hip and Legg-Calvé-Perthes disease are main considerations but infection, inflammation and focal bony lesions are also considered. In children over 10 years, slipped capital femoral epiphysis also is considered.     

Do Balance Board Training Programs Reduce the Risk of Ankle Sprains in Athletes?

Introduction Ankle sprains are the most common musculo-skeletal injury that occurs in athletes,particularly in sports that require jumping and landing on one foot such as soccer,and basketball(1-4).These injuries often result in significant time loss from participation,long-term disability,and have a major impact on health care costs and resources(5-8).     

High Intensity Interval Training:New Insights

KEY POINTS ·High-intensity interval training(HIT)is characterized by repeated sessions of relatively brief，intermittent exercise.often performed with an“a11 out”effort or at an intensity close to that which elicits peak oxygen uptake(i.e.，≥90%of VO2 peak).     

Endovascular management of carotid-cavernous fistulas

Objective To investigate endovascular treatment of traumatic direct carotid-cavernous fistulas （CCF） and their complications such as pseudoaneurysms. Methods： Over a five-year period, 22 patients with traumatic direct CCFs were treated endovascularly in our institution. Thirteen patients were treated once with the result of CCF occluded, 8 twice and 1 three times. Treatment modalities included balloon occlusion of the CCF, sacrifice of the ipsilateral internal carotid artery with detachable balloon, coll embolization of the cavernous sinus and secondary pseudoaneurysms, and covered-stem management of the pseudoaneurysms. Results All the direct CCFs were successfully managed endovascularly. Four patients developed a pseudoaneurysm after the occlusion of the CCF with an incidence of pseudoaneurysm formation of 18.2% （4/22）. A total number of 8 patients experienced permanent occlusion of the ICA with a rate of ICA occlusion reaching 36.4% （8/22）. Followed up through telephone consultation from 6 months to 5 years, all did well with no recurrence of CCF symptoms and signs. Conclusion Traumatic direct CCFs can be successfully managed with endovascular means. The pseudoaneurysms secondary to the occlusion of the CCFs can be occluded with stent-assisted coiling and implantation of covered stents.     

Developmental validation of the PowerPlex(®) ESI 16 and PowerPlex(®) ESI 17 Systems: STR multiplexes for the new European standard

In response to the ENFSI and EDNAP groups’ call for new STR multiplexes for Europe, Promega^® developed a suite of four new DNA profiling kits. This paper describes the developmental validation study performed on the PowerPlex^® ESI 16 (European Standard Investigator 16) and the PowerPlex^® ESI 17 Systems. The PowerPlex^® ESI 16 System combines the 11 loci compatible with the UK National DNA Database^®, contained within the AmpFlSTR^® SGM Plus^® PCR Amplification Kit, with five additional loci: D2S441, D10S1248, D22S1045, D1S1656 and D12S391. The multiplex was designed to reduce the amplicon size of the loci found in the AmpFlSTR^® SGM Plus^® kit. This design facilitates increased robustness and amplification success for the loci used in the national DNA databases created in many countries, when analyzing degraded DNA samples. The PowerPlex^® ESI 17 System amplifies the same loci as the PowerPlex^® ESI 16 System, but with the addition of a primer pair for the SE33 locus. Tests were designed to address the developmental validation guidelines issued by the Scientific Working Group on DNA Analysis Methods (SWGDAM), and those of the DNA Advisory Board (DAB). Samples processed include DNA mixtures, PCR reactions spiked with inhibitors, a sensitivity series, and 306 United Kingdom donor samples to determine concordance with data generated with the AmpFlSTR^® SGM Plus^® kit. Allele frequencies from 242 white Caucasian samples collected in the United Kingdom are also presented. The PowerPlex^® ESI 16 and ESI 17 Systems are robust and sensitive tools, suitable for the analysis of forensic DNA samples. Full profiles were routinely observed with 62.5 pg of a fully heterozygous single source DNA template. This high level of sensitivity was found to impact on mixture analyses, where 54–86% of unique minor contributor alleles were routinely observed in a 1:19 mixture ratio. Improved sensitivity combined with the robustness afforded by smaller amplicons has substantially improved the quantity of data obtained from degraded samples, and the improved chemistry confers exceptional tolerance to high levels of laboratory prepared inhibitors.     

Prevalence and severity of hip and groin pain in sub‐elite male football: a cross‐sectional cohort study of 695 players

The purpose of this study was twofold: (a) to investigate the prevalence of hip and groin pain in sub‐elite male adult football in Denmark and (b) to explore the association between prevalence and duration of hip and groin pain in the previous season with the Copenhagen Hip and Groin Outcome Score (HAGOS) in the beginning of the new season. In total 695 respondents from 40 teams (Division 1–4) were included. Players completed in the beginning of the new season (July–Sept 2011) a self‐reported paper questionnaire on hip and/or groin pain during the previous season and HAGOS. In total 49% (95% CI: 45–52%) reported hip and/or groin pain during the previous season. Of these, 31% (95% CI: 26–36%) reported pain for >6 weeks. Players with the longest duration of pain during the previous season had the lowest HAGOS scores, when assessed at the beginning of the new season, P < 0.001. This study documents that half of sub‐elite male adult football players report pain in the hip and/or groin during a football season. The football players with the longest duration of pain in previous season displayed the lowest HAGOS scores in the beginning of the new season.     

Bronchial stump fistula :treatment with covered retrievable hinged metallic stents-preliminary clinical experience

Objective To evaluate the preliminaily clinical efficacy and retrievability of a retrievable hinged covered metallic stent in the treatment of the bronchial stump fistula （BSF）. Methods Between April 2003 and March 2005, 8 patients with bronchial stump fistula after pneumonectomy or lobectomy were treated with two types （A and B） of retrievable hinged covered metallic stents. Type A stent was placed in 6 patients and type B in 2 under fluoroscopic guidance. The stent was removed with a retrieval set when BSF was healed or complications occurred. Results Stent placement in the bronchial tree was technically successful in all patients, without procedure-related complications. Immediate closure of the BSF was achieved in all patients after the procedure. Stents were removed from all patients but one. Removal of the stents was difficult in two patients due to tissue hyperplasia. Patients were followed up for 6 - 21 months. Placement of the stents remained stable in all patients except one due to severe cough. Permanent closure of BSF was achieved in 7 （87.5%） of 8 patients. Conclusion Use of a retrievable hinged covered expandable metallic stent is a simple, safe, and effective procedure for closure of the BSF. Retrieval of the stent seems to be feasible. （J Intervent Radiol, 2007, 16： 253-257）