نتایج جستجو برای: varicocele

تعداد نتایج: 1641  

2017
Farshad Namdari Masoomeh Dadpay Morteza Hamidi Hossein Ghayoumi Zadeh

Varicocele disorder is defined as a form of abnormal dilation and tortuosity of venous plexus (venous) noticeable above the testicles. The main patterns of the level of abnormal heat distribution in the scrotum can be detected by the help of thermal imaging. It should be noted that Thermal Imaging is widely considered as a distant, non-contact, and non-invasive bunch of procedures for the detec...

Journal: :European journal of endocrinology 2000
H L Fideleff H R Boquete M G Suárez G F Ruibal P G Sobrado M Azaretsky A B Pujol A M Sequera J Giuseppucci R Ponzio

OBJECTIVE To study hormonal and histological parameters of paediatric-adolescent varicocele in order to know certain aspects of its natural history, in an attempt to find prognostic markers of testicular damage. DESIGN AND METHODS In a prospective cross-sectional study, we evaluated 93 children and adolescents with left unilateral varicocele and 29 healthy males as control group. All of them ...

2017
Ahmad Majzoub Ashok Agarwal Sandro C. Esteves

tau.amegroups.com © Translational Andrology and Urology. All rights reserved. We read, with great interest, the commentary written by Wayland Hsaio on the “Clinical utility of sperm DNA fragmentation testing: practice recommendations based on clinical scenarios” (1). The author acknowledges sperm DNA fragmentation as an important addition to conventional methods for assessment of sperm quality ...

Journal: :Central European journal of urology 2015
Łukasz Kupis Piotr Artur Dobroński Piotr Radziszewski

To establish the extent of varicocele as the cause of infertility in men and compare the various techniques of treatment. We searched PubMed and the Cochrane Library database using varicocele, male infertility, varicocelectomy as keywords. Varicocele seems to be a growing problem considered to be one of the most common causes of male infertility in recent times. Nevertheless, its role remains u...

2014
Guy A. Bogaert

A varicocele is defined as an abnormal dilatation of the pampiniform plexus of veins of the testis. The vast majority of children and adolescents with varicoceles have no subjective symptoms. The complete work-up of patient diagnosed with a varicocele involves a physical exam in supine and prone position with and without Valsalva, and the use of ultrasound to measure testicular volume and blood...

2012
Mohammad Hossein Nasr Esfahani Marziyeh Tavalaee

Varicocele is considered as one of the main etiologies of male infertility. Along with altered semen parameters, increased DNA fragmentation is believed to play an important role in varicocele-induced infertility. DNA damage may result from intra- or extra-testicular factors. Among these, apoptosis, abnormal chromatin packaging and oxidative stress are the most researched and are addressed in t...

Journal: :Human reproduction update 2001
D J Cozzolino L I Lipshultz

Varicoceles are the leading correctable cause of infertility in men who present to an infertility clinic for evaluation. Consequently, the surgical correction of a varicocele, known as a varicocelectomy, is the most commonly performed operation for the treatment of male infertility. The current data suggest that an individual with a varicocele, even with a previously normal semen analysis or do...

Introduction: Perepubertal varicocele can result in hypotrophy of testes, sperm damage and decrease the function of leydig cells in future. pathophysiology of varicocele is unclear. Increased reactive oxygen species (ROS) is a major theory. There are many controversies in treatment of pediatric varicocele. Flaxseed (FS) is the richest source of lignans with antioxidant properties. The aim of...

2003
Atilla Semercioz Rahmi Onur Sezai Ogras Irfan Orhan Rahmi ONUR

OBJECTIVES : The pathophysiology of the testicular damage in varicocele have not been completely understood. There are several studies concerning the effects of increased seminal reactive oxygen species (ROS) and the role of nitric oxide (NO) in infertile patients with varicocele and antioxidants have been used successfully to decrease oxidative stress in testis. In this study, we determined th...

Journal: :Journal of endocrinological investigation 2008
C Fini M Coli A Angelini G Brusco P Pasqualucci F Tiziani

5'-Nucleotidase is involved in sperm capacitation via the cAMP-adenosine pathway and in sperm motility via direct adenosine production from AMP. Since these functions are reduced in varicocele, the aim of this study was to investigate whether the enzyme levels were altered in sperm from varicocele patients. The mean (SD) international units (IU) of 5'-nucleotidase activity in seminal plasma fro...

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