科创中国

Rosai-Doffman病(RDD)又名为窦组织细胞增生伴巨大淋巴结病(SHML),通常表现为巨大的、累及双侧的无痛性淋巴结肿大,约25%病例累及结外,而累及男性泌尿生殖道的极为罕见.作者报道2例RDD累及睾丸,同时复习其他睾丸及相关结构RDD病例(包括文献报道的4例及记录在SHML登记处的7例)的临床病理特点.13例中5例同时累及双侧睾丸,8例还累及淋巴结、肾、皮肤和肾上腺等其他部位.多数病例发生于中年人,1例发生于儿童.

肾源性腺瘤是肾上皮增生形成的良性肿瘤,可累及泌尿生殖道的任何部位.Diolombi等报道3例侵犯肾周脂肪组织的肾源性腺瘤病例,对其临床和病理学特点进行描述分析,防止被误诊为浸润癌.例1,71岁,高血压和抑郁症病史,主诉侧腹部疼痛.CT示出血性左肾肿瘤和自发性腹膜后出血.部分肾切除术后病理检查显示为良性囊肿并局灶区管状乳头状增生并局部出血.部分切除的肾周脂肪组织显示为空洞性病变,内容质软棕褐色物质,符合出血.空洞壁镜下表现为出血相关的密

While our understanding of male reproductive strategies is informed by extensive investigations into endocrine mechanisms, the proximate mechanisms by which females compete for mates and adjust reproduction to social environment remains enigmatic. We set out to uncover endocrine correlates of mate choice, social environment, and reproductive investment in female red-backed fairy-wrens Malurus melanocephalus. In this socially monogamous, yet highly sexually promiscuous species, females experience discrete variation in the phenotype of their mates, which vary in both plumage signals and level of paternal care, and in the composition of their breeding groups, which consist of either the pair alone or with an additional cooperative auxiliary; fe- male investment varies according to these social parameters. We found that androgen, estrogen, and glucorticoid levels varied with reproductive stage, with highest androgen and estrogen concentrations during nest construction and highest corticosterone concentrations during the pre-breeding stage. These stage-dependent patterns did not vary with male phenotype or auxiliary presence, though androgen levels during pre-breeding mate selection were lower in females obtaining red/black mates than those obtaining brown mates. We found no evidence that androgen, estrogen, or corticosterone levels during the fertile period were re- lated to extra-pair young (EPY) frequency. This study demonstrates clear changes in steroid levels with reproductive stage, though it found little support for variation with social environment. We suggest hormonal responsiveness to social factors may be physiologically constrained in ways that are bypassed through exogenous hormone manipulations.

患者男性,33岁,因发现左侧乳腺肿块2年入院.实验室检查:催乳素48.19 ng/ml,孕酮1.0 ng/ml.乳房B超:左侧乳腺区探及一33 mm*15 mm大小低回声团(图1),肿瘤边界清楚,内部回声不均,内可见少许液性暗区.彩色多普勒超声(CDFI):团块内见少许点状血流信号.弹性图像(主要用于评价病变的质地)显示:病灶范围内绿色和蓝色所占比例相近(弹性评分为3分).遂于2012年11月13日行左侧乳腺肿块切除术,11月27日再次行左侧乳腺癌改良根治术.

慢性前列腺炎(CP)是男性泌尿生殖系统的常见、多发性疾病,致病因素可分为感染性及非感染性因素.本文通过对CP患者的前列腺液培养,细菌鉴定及药物敏感试验,了解感染菌的分布及耐药率状况,从而对CP的诊断和治疗提供帮助.

目的 探讨左氧氟沙星与环丙沙星治疗泌尿系感染的临床疗效及经济效果.方法 86例泌尿系感染患者,按入院先后随机分为观察组与对照组各43例,观察组给予静脉滴注左氧氟沙星500mg,每天1次;对照组给予静脉滴注环丙沙星400mg,每天2次,连续给药7天为1疗程.对两组的临床疗效及医药费用进行比较分析.结果 观察组的有效率为93.5%,对照组为91.3%,组间比较无显著性差异(P>0.05);观察组的总费用1292元;对照组为715元,组间比较具有显著性差异(P<0.05).结论 两种药物治疗泌尿系感染的疗效近似,但应用环丙沙星进行治疗更经济、更符合成本-效果药物经济学方案.

目的 探讨SRY阳性的46,XX男性综合征患者的临床及细胞分子遗传学特征.方法 对其外周血淋巴细胞进行染色体核型分析;同时提取外周血基因组DNA,进行SRY基因检测,并以正常男性及女性作对照.结果 患者染色体核型为46,XX,SRY基因存在.结论 基因组中存在SRY基因可能与该例46,XX男性综合征患者为男性表型密切相关,对其进行检测有利于明确性反转综合征的临床诊断,通过染色体核型分析和分子遗传学检测,可为性发育异常患者明确病因,并为其治疗提供依据.

徐宇君教授,1996年毕业于美国芝加哥大学遗传学系,取得博士学位.先后在美国加州大学旧金山分校和美国西北大学生殖科学中心任职,并于2005年起在美国西北大学担任终身系列教职(Tenure-trackAssistantProfessor),并建立了自己的实验室,主攻精子发生和发育的遗传机制,