饲料中添加钴、维生素B12对羔羊生长的影响

选用产期接近的3月龄小尾寒羊30只,随机分为二组(试验Ⅰ、试验Ⅱ),每组15只。试验Ⅰ饲喂本场加工的羔羊精饲料,试验Ⅱ饲喂本场加工的羔羊精饲料基础上,每公斤饲料中分别添加钴0.4mg和维生素B120.30mg,试验结果表明:试验Ⅰ与试验Ⅱ日增重相比差异极显著(P<0.01)。     

发展友情，暂缓爱情——从性心理角度看青少年的异性交往

处于青春期的青少年男女普遍进入一种试图发现、选择和试探自己的性心理需求对象的“寻梦”状态。在很长的一段时间里,“寻梦”双方的接触和亲近,具有未专一、不稳定、易更换的特点。这说明,交异性朋友不一定就产生爱情,而是泛指和不同性别的朋友来往,发展普通的友谊关系。从发展心理学角度看,交异性朋友是必要的和有益的,但应该受到理性约束。在校学生应该避免过早恋爱。     

原发性小肠肿瘤诊断治疗的临床分析(附58例报告)

目的探讨原发性小肠肿瘤临床特型、病理分型及诊治经验。方法回顾性分析1993年10月。2003年10月收治的有完整资料的58例原发性小肠肿瘤病例。结果本组包括13例(22．4％)良性肿瘤，45例(77．6％)。小肠良性肿瘤均行局部肠段切除，除2例死于其它疾患外，余11例健在；小肠恶性肿瘤患者中，院内死亡6例，仅11例能行根治性肠切除，37例行化疗(总有效率83．4％)，随访33例(随访率89．5％)，存活5年以上者14例(5年生存率42．4％)，多为T细胞性非何杰金淋巴瘤。结论原发性小肠肿瘤恶性所占比例较高，缺乏特征性的临床表现及有效的诊断手段，易致长期延误诊治，预后甚差；对原因不明的腹痛、消化道出血及定位不明的腹部包块患者及早行剖腹探查是避免小肠肿瘤长期误诊、改善患者预后的可靠手段。     

An open-label efficacy pilot study with pimecrolimus cream 1% in adults with facial seborrhoeic dermatitis infected with HIV

BACKGROUND: Seborrhoeic dermatitis (SD) is a common dermatosis in human immunodeficiency virus (HIV)-positive patients, many of whom do not respond satisfactorily to conventional topical treatments such as corticosteroids and antifungals. OBJECTIVE: A pilot study to investigate the efficacy and tolerability of pimecrolimus cream 1% in HIV-positive patients with facial SD. METHODS: In a single-centre study, 21 HIV-infected patients with mild to severe SD were treated twice daily with pimecrolimus cream 1% for 14 days. Thereafter, treatment was discontinued and patients followed up for 5 weeks. Skin involvement at baseline and on days 7, 14, 21, 35 and 49 was assessed using a four-point clinical score and digital photography. MAIN OUTCOME MEASURES: Efficacy and safety of pimecrolimus cream 1% treatment and incidence of relapse in the follow-up phase. Results Marked improvement was seen in clinical parameters at day 7, with >or= 90% patients clear of symptoms at day 14. Relapse was observed at day 35 but signs were milder than at baseline. All patients responded to therapy, despite their immunological status. Pimecrolimus did not alter CD4(+) and CD8(+) T-cell counts or viral load during the treatment period. CONCLUSION: Pimecrolimus cream represents a new, effective therapeutic option for facial SD in HIV patients.     

超声定量检查技术新进展

近年来，超声定量检查技术在临床的应用为心血管疾病患者的心功能评估提供了量化的依据，本文介绍了超声诊断仪的使用部分最新定量检查技术。     

经颅多普勒频谱参数与急性颅脑损伤患者颅内压的关系

目的探讨急性颅脑损伤患者的经颅多普勒频谱参数与颅内压的关系。方法应用TCD检测20例急性中、重型颅脑损伤患者双侧大脑中动脉,同时行颅内压监测。结果经颅多普勒频谱参数cf、PI、af、RI、ae均和ICP正相关,Vd、ac和ICP负相关,其中cf与ICP的相关系数最大。建立TCD相关参数与ICP的多元线性回归方程:ICP=0.312MAP-1.531Vd+21.437PI-15.059ac+38.722cf(P<0.001,R2=0.920估计值的标准差=4.0972mmHg)。结论经颅多谱勒频谱参数可以反应颅脑损伤患者的颅内压的改变。综合研究经颅多谱勒频谱参数、血压与颅内压的关系是应用经颅多普勒无创监测颅内压的方向。     

不同剂量体外冲击波治疗肱骨外上髁炎的疗效对比

目的 比较不同能流密度的体外冲击波(extracorporeal shock wave, ESW)治疗肱骨外上髁炎(lateral epicondylitis, LE)的短期临床疗效,探索ESW的最佳治疗剂量。方法 将120例LE患者分为A、B、C和D 4组,均使用ESW治疗4周,各组的能流密度分别为0.06、0.08、0.10、0.12 mJ/mm²。分别在治疗前及治疗后4、24及48周,比较4组患者疼痛视觉模拟量表(visual analogue scale, VAS)评分、肱骨外上髁炎功能评估(patient-rated tennis elbow evaluation, PRTEE)评分及末次随访患者满意度和复发率。结果 按时间点比较,各组VAS评分治疗前最高,治疗后48周降至最低(P<0.05),4组患者满意度及复发率比较差异无统计学意义(P>0.05),但C组患者满意度(96.67%)明显高于A组(80%),差异具有统计学意义(P=0.04)。按组间比较观察,治疗前各组患肘VAS评分差异无统计学意义(P>0.05);治疗后4、24和48...     

Bone growth in zebrafish fins occurs via multiple pulses of cell proliferation.

Fin length in the zebrafish is achieved by the distal addition of bony segments of the correct length. Genetic and molecular data provided evidence that segment growth uses a single pulse of growth, followed by a period of stasis. Examination of cell proliferation during segment growth was predicted to expose a graphical model consistent with a single burst of cell division (e.g., constant, parabolic, or exponential decay) during the lengthening of the distal-most segment. Cell proliferation was detected either by labeling animals with bromodeoxyuridine (during S-phase) or monitoring histone3-phosphate (mitosis). Results from both methods revealed that the number of proliferating cells fluctuates in apparent pulses as a segment grows (i.e., during the growth phase). Thus, rather than segment size being the result of a single burst of proliferation, it appears that segment growth is the result of several pulses of cell division that occur approximately every 60 microns (average segment length approximately 250 microns). These results indicate that segment lengthening requires multiple pulses of cell proliferation.     

不孕及反复流产患者血清抗心磷脂抗体的检测

目的检测不孕及反复流产患者血清中的抗心磷脂抗体(ACA),探讨ACA的临床意义.方法应用酶联免疫吸附(ELISA)法检测105例原发或继发不孕患者(不孕组)、171例反复流产或有胚胎停育史患者(流产组)及40例正常对照组血清中的IgG、IgM及IgA-ACA 3种抗体.结果不孕组ACA总阳性率为44.76%,流产组为35.09%,均显著高于对照组(P＜0,01).不孕组及流产组的单纯IgG阳性率亦明显高于对照组(P＜0.05);而两组的单纯IgM阳性率与对照组相比,差异均无显著性意义(P＞0.05).结论ACA是导致不孕及反复流产的免疫学因素之一,IgG型的ACA比IgM型的更具临床意义