نتایج جستجو برای: subclinical varicocele

تعداد نتایج: 18536  

Journal: :Urology journal 2016
Hossein Karami Amin Hassanzade Hadad Morteza Fallahkarkan

PURPOSE To evaluate postoperative results of laparoscopic varicocelectomy using bipolar electrosurgery and analyze semen according to the grade of varicocele after surgery. MATERIALS AND METHODS In a six-year period, 416 men with clinical varicocele and impaired semen parameters or infertility underwent laparoscopic varicocelectomy using bipolar electrosurgery. All patients were assessed for ...

Journal: :Fertility and sterility 2010
Mohamed Ahmed Abd-Elmoaty Ramadan Saleh Rakesh Sharma Ashok Agarwal

Significantly higher levels of oxidants (malonaldehyde and nitric oxide) and reduced levels of antioxidants (superoxide dismutase, glutathione peroxidase, catalase, and ascorbic acid) are seen in semen of infertile men with varicocele. Seminal oxidative stress (OS) seen in men with varicocele is associated with sperm motility and grade of varicocele.

Journal: :International braz j urol : official journal of the Brazilian Society of Urology 2018
Antonio Marte

Men have most likely been affected by varicocele since the assumption of the upright position. In De Medicina, written during the first century AD, Celsus credits the Greeks with the first description of a varicocele, and he recorded his own acute observation: "The veins are swollen and twisted over the testicle, which becomes smaller". Celsus himself is credited with the distinction between va...

2016
Rafieh Alizadeh Shadan Navid Niloofar Abbasi Abazar Yari Zohreh Mazaheri Erfan Daneshi Ashok Agarwal Mehdi Abbasi

OBJECTIVES Increased levels of nitric oxide (NO) in the testicular veins of people suffering from varicocele have already been reported. However, the role of NO-synthase (NOS) isozymes and their inhibitors have not been extensively studied. We aimed to evaluate the inhibitory effects of aminoguanidine (AG), on sperm motility, vitality, and mitochondrial membrane potential (MMP) in varicocelized...

Journal: :Journal of the Formosan Medical Association = Taiwan yi zhi 2007
Jane-Dar Lee Shaw-Yeu Jeng Tsung-Han Lee

BACKGROUND/PURPOSE Varicocele is characterized by dilatation and tortuosity of the internal spermatic vein (ISV). Cross sections of ISV showed marked thickening of smooth muscle layer under microscopy. This study examined Bcl-2 (anti-apoptotic protein) expression in the ISV of patients with varicocele. METHODS The study group consisted of eight patients with left varicocele, grade 3. The cont...

Journal: :Human reproduction 2004
Susan H Benoff Colleen Millan Ian R Hurley Barbara Napolitano Joel L Marmar

BACKGROUND Varicoceles are associated with venous flux that may cause increased heat and interstitial pressure within the testes, but these effects are variable. Some men with varicocele have infertility, but others do not. We question whether other factors contribute to the infertility, and whether these other factors could be identified by specific molecular/genetic markers. Can such markers ...

Journal: :Urology 2004
Kiran P Nallella Shyam S R Allamaneni Fabio F Pasqualotto Rakesh K Sharma Anthony J Thomas Ashok Agarwal

OBJECTIVES To examine levels of interleukin-6 (IL-6) in fertile semen donors and patients with varicocele and examine its association with semen characteristics and levels of reactive oxygen species (ROS). METHODS We conducted a prospective study consisting of 15 fertile donors (controls) and 35 infertile patients with varicocele. Semen analysis was performed according to the World Health Org...

2013
Piotr Bryniarski Zbigniew Kaletka Jacek Huk Mieczysław Fryczkowski Grzegorz Prokopowicz Marcin Życzkowski Bartosz Muskała Piotr Taborowski Andrzej Paradysz

INTRODUCTION Failure to perform surgical repair of varicocele before puberty is among the common causes of male infertility. The purpose of this study was to evaluate the testicular volume and fertility potential in men after laparoscopic varicocelectomy conducted in adolescence due to varicocele and concomitant testicular hypotrophy. MATERIAL AND METHODS From 1996 through 2011, eighty-two ad...

2001
Arcangelo Merla Andrea Ledda Luigi Di Donato Gian Luca Romani

Infrared Functional Imaging (IRFI) was used to detect sub-clinical varicocele. The evaluation of varicocele related hyperthermia and the different thermal properties of healthy and unhealthy testicles were used to detect the presence of the disease. A mild cold thermal stress performed on the scrotal region highlighted differences in the thermal recovery between the contralateral testicles and ...

Journal: :Fertility and sterility 2004
Shyam S R Allamaneni Cathy K Naughton Rakesh K Sharma Anthony J Thomas Ashok Agarwal

Increased levels of reactive oxygen species (ROS) are associated with clinical varicoceles; however, its correlation with varicocele grade and testis size is unknown. In our study, seminal ROS levels showed significant correlation with left varicocele grade and significantly elevated seminal ROS levels were seen in men with left varicocele grade 2 and 3 compared to grade 1.

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