Publications by authors named "H Keyhan"

Objective: The present study aimed to provide an early insight into the effect of intra-axial frontal lobe tumors on the micturition center and its potential role in producing compression in and around the prefrontal cortex.

Patients And Methods: A total of 149 symptomatic patients were selected for urodynamic testing. The study sample included all patients with intra-axial frontal lobe tumors treated at two locations: the University Medical Center Tuebingen (Germany), and Azad University of Medical Sciences (Iran) between 2017 and 2020.

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Purpose: To determine serum fetuin-A pattern after renal transplantation and its association with graft outcome.

Materials And Methods: In 41 renal transplant recipients, serum pretransplant fetuin-A levels and serum fetuin-A concentrations on days 7 and 30 after transplantation were measured using the enzyme-linked immunosorbent as­say (ELISA) method. Also, the association between serum fetuin-A levels with clinical and laboratory parameters was evaluated.

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Background: Since nitric oxide (NO) has an oxidant activity, lower levels following a varicocelectomy may result in better functioning sperm, improved semen quality and consequently higher fertility rates. However, this procedure should be examined in more detail.

Objectives: Accordingly, this study was performed to compare the before and after varicocelectomy levels of NO in the seminal fluid of infertile men.

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Introduction: Elevated nitric oxide (NO) levels have been shown to have toxic effects on sperm function and motility. This study was conducted to compare NO levels in the seminal fluid of infertile men with varicocele with those of infertile and fertile men without varicocele.

Materials And Methods: Semen samples were obtained from 40 infertile men with varicocele (group 1), 40 infertile men without varicocele (group 2), and 40 fertile volunteers without varicocele (group 3).

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