Publications by authors named "Baris Altay"

Objectives: This study aimed to investigate the correlation between testicular shear wave elastography (SWE) values and semen analysis results in men with infertility.

Methods: This was a retrospective case-control study. Patients were categorized as normal, abnormal, or azoospermic based on sperm analysis results.

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Article Synopsis
  • Non-obstructive azoospermia (NOA) is a prevalent and complex issue with varied treatment options and no definitive guidelines, leading to differing management practices internationally.
  • A comprehensive survey with 336 responses from specialists in 49 countries explored current medical and surgical strategies for NOA, analyzing results against existing guidelines and offering expert recommendations.
  • Key findings included diverse approaches to hormonal therapy, significant variation in sperm retrieval success rates, and differing protocols around varicocele repair and follicle-stimulating hormone cutoff levels for sperm retrieval.
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  • * Conducted from July to September 2022, a questionnaire gathered responses from 367 doctors in 49 countries, focusing on how they diagnose NOA through methods like hormone tests and genetic analyses.
  • * The survey identified that while many practices align with guidelines, significant differences in approaches were found, underscoring the need for standardized, evidence-based international guidelines for NOA evaluation.
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  • The study investigates global practices and challenges in using sperm DNA fragmentation (SDF) assays, which can affect male reproductive potential, as outlined in the latest WHO manual.
  • A survey of 436 reproductive clinicians revealed that the most popular SDF assay is TUNEL, with a significant influence from availability on their choices.
  • Clinicians see the value of SDF testing in understanding infertility but face barriers like insufficient professional guidelines and a lack of accepted reference values for interpreting SDF results.
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  • The meta-analysis investigates the effects of varicocele repair on semen parameters in infertile males, combining data from diverse studies without language restrictions.
  • A total of 351 studies were analyzed, revealing significant improvements in several semen parameters post-repair, including semen volume, sperm concentration, total sperm count, motility, and morphology, while sperm vitality showed no improvement.
  • This research is the largest of its kind and highlights the benefits of varicocele repair for male infertility, contributing valuable insights for clinical practice.
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Article Synopsis
  • The study investigates global practices for managing sperm DNA fragmentation (SDF) in infertile men, highlighting its impact on fertility and assisted reproductive technology (ART).
  • A survey collecting data from 436 reproductive experts across 55 countries revealed a common recommendation for lifestyle changes and antioxidants, with varying durations for treatment and differing management approaches for specific infertility cases.
  • The findings indicate a lack of uniformity in practices, emphasizing the need for standardized guidelines and expert consensus for treating men with elevated SDF.
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The aim of this study was to evaluate the data currently available on predictors of sperm retrieval (SR) in infertile men with Klinefelter syndrome (KS). The data of infertile patients with KS who were evaluated for primary infertility in the andrology outpatient clinics of six centres were retrospectively reviewed. SR, fertilization and pregnancy rates were evaluated.

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In this study, we aimed to elucidate the relationship between AZF deletion type and clinical information of azoospermic patients with AZF microdeletion in the Turkish population. Azoospermic patients with normal karyotype and AZF microdeletion were analysed retrospectively by collecting clinical data including hormone profile, demographic characteristics and micro-TESE results. As a result of the AZF microdeletion tests of 42 cases with 46 XY karyotype, AZFa deletion was detected in 3 cases, AZFb deletion in 2 cases, AZFc deletion in 31 cases, AZFb + AZFc deletion in 4 cases and AZFa + AZFb + AZFc deletion in 2 cases respectively.

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Background: Although few studies have reported fertility outcomes, no study has reported risk factors that might predict sperm retrieval and pregnancy in azoospermic men with a history of cryptorchidism in a large series.

Objectives: To investigate fertility outcomes and predictors for successful sperm retrieval and pregnancy in azoospermic men with a history of cryptorchidism who underwent microdissection testicular sperm extraction (mTESE).

Materials And Methods: This retrospective observational study included 327 azoospermic men with a history of cryptorchidism who underwent mTESE.

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Aims: In children with Down syndrome (DS) which causes cognitive impairment and intellectual disability (ID), dysfunctional voiding is proposed to be more common than in the normal population. In this study, we aimed to compare the voiding symptoms of DS children with a control group by validated questionnaires.

Methods: Thirty-seven DS children without any previous urological complaints and 59 non-DS healthy children as control group was included in the study.

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We aimed to correlate the predisposing demographic and clinical factors for erectile dysfunction (ED) in young men and treatment response in these men with data from older men. The patients were divided into two groups: <40 years (group I, n = 58) and ≥40 years (group II, n = 73). ED was evaluated with the International Index of Erectile Function-5 (IIEF-5) questionnaire, and Beck's Depression Inventory (BDI) questionnaire was used to evaluate mood status.

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Despite advances in the field of male reproductive health, idiopathic male infertility, in which a man has altered semen characteristics without an identifiable cause and there is no female factor infertility, remains a challenging condition to diagnose and manage. Increasing evidence suggests that oxidative stress (OS) plays an independent role in the etiology of male infertility, with 30% to 80% of infertile men having elevated seminal reactive oxygen species levels. OS can negatively affect fertility a number of pathways, including interference with capacitation and possible damage to sperm membrane and DNA, which may impair the sperm's potential to fertilize an egg and develop into a healthy embryo.

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Objective: There is no clear consensus on which patients and how many of microscopic testicular sperm extraction (mTESE) procedures will be successful. In this study, we aimed to evaluate the sperm retrieval rates and factors affecting these rates in men who underwent repeat mTESEs.

Material And Methods: A total of 346 patients who underwent mTESE for sperm retrieval were included in the study.

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In this study, we aimed to evaluate the effect of oral antioxidant treatment on semen parameters and pregnancy rates in infertile men who underwent varicocelectomy. The study was conducted between January 2016 and January 2018. Subinguinal microscopic varicocelectomy was performed in 90 patients who were referred for infertility and diagnosed with clinical varicocele.

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Purpose: We aimed to investigate the effect of percutaneous nephrostomy (PCN) implementation on the second ureteroscopy (URS) outcomes after a failed URS.

Materials And Methods: The data of four hundred forty-eight patients with an unsuccessful URS history were evaluated. Patients were divided into two groups; patients who underwent PCN before second URS (Group A) and patients who did not (Group B).

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Conventional semen analysis solely is not completely adequate to predict pregnancy outcomes. Therefore, advanced sperm function tests have been developed and introduced to clinical practice. These tests use different methods and techniques to evaluate different stages of fertilization steps.

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We aimed to analyse the relationship between sperm parameters and International Index of Erectile Function (IIEF) score, the Female Sexual Function Index (FSFI) score, the testosterone (T) level in infertile men and between FSFI score and partners' fertility. Patients were divided into three groups; (group 1: azoospermia [n = 57], group 2: sperm count <15 million [n = 41], group 3: sperm count >15 million [n = 81]). Patients and their partners filled the IIEF and FSFI forms.

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In this study, it was aimed to investigate apoptosis in renal injury and the effect of lisinopril in rat model, which constitute unilateral ureteral obstruction. The retroperitoneal ureter was ligated with a 4.0 silk for the experimental model of ureteral obstruction in Wistar albino rats.

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Objectives: To evaluate the therapeutic effects of a selective endothelin type A receptor antagonist (ERA-A) on testis of streptozotocin (STZ)-induced diabetic rats.

Methods: Eighty rats were analyzed in 4 groups: healthy controls, diabetic rats, diabetic rats treated with ERA-A, and healthy rats treated with ERA-A. Diabetes was induced in 40 rats by a single intraperitoneal injection of STZ and followed for 2 months.

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We aimed to determine the changes of inducible nitric oxide synthase (iNOS) and endothelial nitric oxide synthase (eNOS) immunoreactivity and apoptosis after proximal and distal obstruction models on ipsilateral and contralateral testicular tissues. Male albino Wistar rats were randomly divided into three groups (n=30): a control group which underwent sham operations (n=10), a unilateral vasal ligation (n=10) and a unilateral epididymal ligation group (n=10). iNOS and eNOS distribution and apoptosis were studied in both ipsilateral and contralateral testes using quantitative immunohistochemistry.

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The electromyographic properties of the cremaster muscle (CM) are quite different from other skeletal muscles. It shows excessive spontaneous discharges, and the motor unit shape and firing frequency of the CM muscle differ from that of limb muscles. In this study, CM of six adult cadavers and six orchiectomy specimens were used to reveal the detailed histology of the muscle and provide an anatomophysiological explanation for these unusual electromyographic properties.

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Background And Purpose: To assess the results of shockwave lithotripsy (SWL) for renal calculi in upper, middle, and lower calices according to the stone burden.

Patient And Methods: A series of 52 female and 66 male patients with a mean age of 47.8 years and isolated single caliceal stones who underwent SWL monotherapy were enrolled.

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Objective: We aimed to investigate electrophysiologically the intersegmental reflex circuit from sacral to lumbar cord segments in normopotent adult men, in patients with spinal cord injury and in patients with premature ejaculation.

Methods: Reflex EMG activity of the cremasteric (CM) and bulbocavernosus (BC) muscles was recorded simultaneously by needle electrodes during electrical stimulation of the upper lumbar and sacral dermatomes, respectively. Thirty-three healthy male volunteers, 16 patients with spinal cord injury (SCI) at the thoracic or cervical levels, and 26 men with premature ejaculation (PME) were included in the study.

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Objective: To describe the effects of epididymal and vasal ligation, in an experimental rat model, by using connexin 43 and occludin immunohistochemistry as well as transmission electron microscopy.

Design: Comparative and controlled experimental research study.

Setting: University animal research and histology laboratories in Turkey.

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Objective: To study prospectively experimental effects of unilateral epididymal obstruction on testis and epididymis histopathologically in prepubertal rats.

Study Design: Organ weights, mean seminiferous tubule diameter (MSTD), mean ductus epididymis diameter (MDED), mean tubular biopsy scores (MTBS) and histopathology of 21 male albino Wistar rats were compared with the immunostaining affinity of anti-desmin, anti-vimentin, anti-laminin and anti-collagen antibodies.

Results: Statistical analysis of mean weight of testes, MTBS, mean epididymal weight, MDED and MSTD was significant.

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