中空双头加压螺纹钉加折断式螺钉治疗股骨颈骨折

目的:为了提高股骨颈骨折固定强度和愈合率,减少骨坏死及其它并发症.方法:应用中空双头加压螺纹钉加折断式螺钉治疗股骨颈骨折.结果:经35例临床应用及术后平均28个月随访,优良率为88.6%.结论:本手术切口小、创伤小、出血少、时间短、固定较可靠,便于功能锻炼,术后恢复良好.     

Different hypersensitivities against homologous proteins of MGL_1304 in patients with atopic dermatitis

Background

Atopic dermatitis (AD) is exacerbated by sweating, and the skin of most patients with AD are resided by Malassezia (M.) fungi. Recently, MGL_1304 produced by Malassezia globosa was identified as the major histamine releasing antigen in human sweat.

丙型肝炎5''''非编码区末端快速基因扩增方法的建立及应用

目的 建立快速获得丙型肝炎（HCV）基因组5’非编码区（5’uTR）真末端序列的分子生物学方法。方法 逆转录后利用末端聚合酶（TOT）进行加尾反应，再利用套式聚合酶链反应（PCR）扩增出目的末端基因的cDNA片段，A-T克隆，用限制性内切酶片段长度多态性分析（RVLP）与PCR鉴定重组子，全自动序列分析仪测定插入子序列。结果 cDNA末端快速扩增技术（RACE）获得5株HCV5’UTR克隆，包括3株全长克隆和2株缺失克隆。2株缺失克隆，一条在5’末端缺失53个碱基，另一条缺失144个碱基。结论 RACE技术快速、有效、实用，可有效获得丙型肝炎病毒基因组的5’非编码区末端序列。     

2013-2015年我院儿童重症监护病房有创导管末端细菌培养及耐药性分析

目的:了解儿童重症监护病房(PICU)有创导管末端培养分离菌菌谱及耐药情况,为临床防治院内感染提供参考。方法:采用单中心回顾性研究方法对南京医科大学附属儿童医院PICU 2013-2015年所分离的气管插管、深静脉置管和导尿管等有创导管末端细菌菌株及耐药性进行调查分析。结果:3年共获得218例阳性培养标本,分离菌株256株,其中菌G-菌179株(69.92%),G+菌60株(23.44%),真菌17株(6.64%);前6位分离菌分别为鲍曼不动杆菌(32.42%)、肺炎克雷伯杆菌(17.58%)、粪肠球菌(4.69%)、白假丝酵母菌(4.30%)、铜绿假单胞菌(4.30%)和耐甲氧西林金黄色葡萄球菌(MRSA,3.91%)。体外药敏试验显示主要分离菌均呈多重耐药特性,对亚胺培南和第三代头孢菌素均显示高度耐药性;哌拉西林/他唑巴坦对铜绿假单胞菌具较强的抗菌活性,敏感率可达100.00%;仅有万古霉素和利奈唑烷对G+具有较强的抗菌活性,敏感率可达100.00%。结论:PICU有创导管末端培养分离菌以G-菌为主,细菌呈多重耐药特性。粪肠球菌和MRSA在G+菌中比例较高,应高度重视。     

Molecular rescue of tumour-specific T cell receptor idiotype from T cell lymphomas

The T cell receptor (TCR) idiotype on T cell lymphomas can serve as a vaccine target. To clone the relevant genes, 5' rapid amplification of cDNA ends (RACE) was performed on 13 T cell lymphomas and nine control samples. Two polymerase chain reactions (PCR) were performed for each TCR chain (alpha and beta) and the proportion of the clonal TCR sequence over the total number of TCR sequences was calculated. For alpha, the average proportions were 0.43 vs. 0.05. For beta these were 0.44 and 0.04. The TCR was identified in 10 of 13 lymphoma samples.     

日本血吸虫视黄酸X受体2全长cDNA的克隆及初步分析

目的克隆编码日本血吸虫视黄酸X受体2(SjRXR2)蛋白的全长cDNA,并对其进行初步研究。方法利用cDNA末端快速扩增技术(RACE)获得SjRXR2蛋白全长编码cDNA。利用生物信息学技术,对基因结构进行初步分析。利用实时荧光定量(Real time)PCR技术对该基因在日本血吸虫不同时期虫体中的转录情况进行分析。应用在线抗体表位预测软件获得SjRXR2配体结合区抗原性较强的一个多肽序列,合成该多肽片段,并免疫小鼠制备抗血清。利用Western blot技术分析该蛋白在日本血吸虫中的表达。结果采用RACE技术成功获得了SjRXR2蛋白全长编码cDNA,总长度为5 960bp,其完整开放阅读框为4 308 bp,编码1 435个氨基酸,预测分子量为159 kDa。生物信息学分析表明该基因编码的蛋白质序列具有核受体家族2的典型结构域特征,且与曼氏血吸虫RXR2有较高的相似性。Real time PCR分析表明,该基因在21、42 d龄日本血吸虫虫体内有较高的转录水平。Western blot分析表明,小鼠SjRXR2多肽免疫血清可特异性识别日本血吸虫虫体150 kDa蛋白。结论成功获得了编码SjRXR2蛋白的全长cDNA,并制备了针对该蛋白的特异性多克隆抗体,为进一步研究该蛋白的功能奠定了基础。     

Identification of Cha o 3 homolog Cry j 4 from Cryptomeria japonica (Japanese cedar) pollen: Limitation of the present Japanese cedar–specific ASIT

Background

About one-third of the Japanese population suffers from Japanese cedar pollinosis, which is frequently accompanied by Japanese cypress pollinosis. Recently, a novel major Japanese cypress pollen allergen, Cha o 3, was discovered. However, whether a Cha o 3 homolog is present in Japanese cedar pollen remains to be determined.

Leptin and leptin receptor genes in Atlantic salmon: Cloning, phylogeny, tissue distribution and expression correlated to long-term feeding status

The present study reports the complete coding sequences for two paralogues for leptin (sLepA1 and sLepA2) and leptin receptor (sLepR) in Atlantic salmon. The deduced 171-amino acid (aa) sequence of sLepA1 and 175 aa sequence for sLepA2 shows 71.6% identity to each other and clusters phylogenetically with teleost Lep type A, with 22.4% and 24.1% identity to human Lep. Both sLep proteins are predicted to consist of four helixes showing strong conservation of tertiary structure with other vertebrates. The highest mRNA levels for sLepA1 in fed fish (satiation ration = 100%) were observed in the brain, white muscle, liver, and ovaries. In most tissues sLepA2 generally had a lower expression than sLepA1 except for the gastrointestinal tract (stomach and mid-gut) and kidney. Only one leptin receptor ortholog was identified and it shares 24.2% aa sequence similarity with human LepR, with stretches of highest sequence similarity corresponding to domains considered important for LepR signaling. The sLepR was abundantly expressed in the ovary, and was also high in the brain, pituitary, eye, gill, skin, visceral adipose tissue, belly flap, red muscle, kidney, and testis. Fish reared on a rationed feeding regime (60% of satiation) for 10 months grew less than control (100%) and tended to have a lower sLepA1 mRNA expression in the fat-depositing tissues visceral adipose tissue (p < 0.05) and white muscle (n.s.). sLepA2 mRNA levels was very low in these tissues and feeding regime tended to affect its expression in an opposite manner. Expression in liver differed from that of the other tissues with a higher sLepA2 mRNA in the feed-rationed group (p < 0.01). Plasma levels of sLep did not differ between fish fed restricted and full feeding regimes. No difference in brain sLepR mRNA levels was observed between fish fed reduced and full feeding regimes. This study in part supports that sLepA1 is involved in signaling the energy status in fat-depositing tissues in line with the mammalian model, whereas sLepA2 may possibly play important roles in the digestive tract and liver. At present, data on Lep in teleosts are too scarce to allow generalization about how the Lep system is influenced by tissue-specific energy status and, in turn, may regulate functions related to feed intake, growth, and adiposity in fish. In tetraploid species like Atlantic salmon, different Lep paralogues seems to serve different physiological roles.