نتایج جستجو برای: testicular development

تعداد نتایج: 1434495  

Journal: :Reproduction 2005
Helen Baines Margaret O Nwagwu Edwina C Furneaux Jane Stewart Jeffrey B Kerr Terry M Mayhew Francis J P Ebling

Testicular development is arrested in the hypogonadal (hpg) mouse due to a congenital deficiency of hypothalamic gonadotropin-releasing hormone synthesis. Previous studies have demonstrated that chronic treatment of these mice with estradiol induces testicular maturation and qualitatively normal spermatogenesis, but it is not known whether these are direct effects via estrogen receptors express...

2014
Man Zhang Hai Zhou Chunxing Zheng Jun Xiao Erwei Zuo Wujuan Liu Da Xie Yufang Shi Chunlian Wu Hongyan Wang Dangsheng Li Jinsong Li

C-kit positive (c-kit(+)) cells are usual tissue-specific stem cells. However, in postnatal testis, undifferentiated spermatogonial stem cells (SSCs) are c-kit negative (c-kit(-)) and activation of c-kit represents the start of SSC differentiation, leaving an intriguing question whether other c-kit(+) cells exist and participate in the postnatal development of testis. To this end, a feasible sy...

2007
Chunjiang He Zhixiang Zuo Hengling Chen Liao Zhang Fang Zhou Hanhua Cheng Rongjia Zhou

Alternative pre-mRNA splicing (AS) is a key molecular event that allows for protein diversity and plays important roles in development and disease. AS regulations during spermatogenesis and AS aetiology in testicular tumorigenesis have not yet to be characterized. By genome-wide analysis, here we describe alternative splicing features that distinguish distinctive patterns of AS among human test...

Journal: :Cancer 2003
Martijn F Lutke Holzik Rolf H Sijmons Dirk T Sleijfer Dirk J A Sonneveld Josette E H M Hoekstra-Weebers Jannie van Echten-Arends Harald J Hoekstra

BACKGROUND In patients with hereditary or constitutional chromosomal anomalies, testicular carcinoma can develop sporadically or on the basis of an underlying hereditary genetic defect. Greater knowledge of these genetic defects would provide more insight into the molecular pathways that lead to testicular carcinoma. To the authors' knowledge, little attention has been paid to date to the comor...

2017
Sang Hyub Lee Dong Gi Lee Seung Kwon Choi Taesoo Choi Koo Han Yoo

The objectives of this study were to investigate patients treated for scrotal trauma at our institute for the last three decades to describe our experience with an emphasis on the etiologies and ultrasonographic findings in these patients. We reviewed medical records of patients who underwent scrotal ultrasonography for evaluation of testicular trauma at our institutes from 1986 to 2015. Trends...

Journal: :The Journal of urology 2012
Douglas A Canning

OBJECTIVE After review of the pediatric literature, we report on the prevalence of testicular microlithiasis and its relation with benign and malign entities. We provide a guideline for the management of boys with testicular microlithiasis. MATERIALS AND METHODS The databases searched were Medline, Web of Science, Embase and the Cochrane Library. Data on the rates of testicular microlithiasis...

2016
Prathap Kumar Shailaja Shetty

Address for Correspondence: Dr Prathap Kumar J, Assistant Professor, Department of Anatomy, M S Ramaiah Medical College, M S R Nagar, MSRIT post, Mathikere, Bangalore-560054, Karnataka, India. E-Mail: [email protected] Background: The testicular artery is normally a branch of the abdominal aorta and arises about 1-2inches below the origin of renal artery. In the present study, variation...

Journal: :Archives of internal medicine 2009
Thomas J Walsh Mary S Croughan Michael Schembri June M Chan Paul J Turek

BACKGROUND The risk of testicular cancer is thought to be higher among men seeking infertility treatment compared with the general population. Confirmation of this risk in a large US cohort of at-risk patients is lacking. This study explored the association between male infertility and subsequent development of testicular cancer in a US-based cohort. METHODS A total of 51 461 couples evaluate...

Journal: :Journal of neuroendocrinology 2005
C R Tuthill D A Freeman M P Butler Tori Chinn J H Park I Zucker

We assessed the influence of perinatal melatonin on reproductive development and adult responsiveness to melatonin. Testicular growth in an intermediate day length (14 : 10 h light/dark cycle) was substantially reduced in Siberian hamsters gestated by pinealectomised compared to pineal-intact females; gonadal development was normalised in offspring of pinealectomised dams that were pinealectomi...

Journal: :journal of minimally invasive surgical sciences 0
seyed amir mohsen ziaee urology and nephrology research center, shahid labbafinejad hospital, shahid beheshti university of medical sciences, tehran, ir iran akbar nouralizadeh urology and nephrology research center, shahid labbafinejad hospital, shahid beheshti university of medical sciences, tehran, ir iran mohammad ali fallah urology and nephrology research center, shahid labbafinejad hospital, shahid beheshti university of medical sciences, tehran, ir iran mohammad ali ghaed urology and nephrology research center, shahid labbafinejad hospital, shahid beheshti university of medical sciences, tehran, ir iran mahboubeh mirzaei urology and nephrology research center, shahid labbafinejad hospital, shahid beheshti university of medical sciences, tehran, ir iran mohammad hadi radfar urology and nephrology research center, shahid labbafinejad hospital, shahid beheshti university of medical sciences, tehran, ir iran; urology and nephrology research center, shahid labbafinejad hospital, shahid beheshti university of medical sciences, 9th boostan, pasdaran avenue, tehran, ir iran. tel/fax: +98-2122588016

context to review and summarize the literature regarding the current status of postchemotherapy laparoscopic retroperitoneal lymph node dissection (pcl-rplnd) in patients with testicular germ cell tumor. evidence acquisition a comprehensive review of the english literature was performed using the pubmed database using the terms “laparoscopy” or “laparoscopic”, retroperitoneal lymph node dissect...

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