نتایج جستجو برای: testis
تعداد نتایج: 22471 فیلتر نتایج به سال:
ناباروری( infertility) یکی از جدی ترین مشکلات اجتماعی در کشورهای پیشرفته است.تقریبا15% از زوج ها با موارد مختلف ناباروری مواجه میشوندو علت 50% از ناباروری این زوج ها مربوط به فاکتورهای وابسته به مردان است. بر اساس تحقیقات موجود علل ناباروری در مردان بیشتر در طی فرایند اسپرماتوژنز ( spermatogenesis) صورت می گیرد. تغییرات ژنتیکی در ژنهایی که در این فرایند درگیر هستند نقش مهمی در اختلالات روند اس...
Transforming growth factor β1 (TGF-β1) is a polypeptide with various biological activities. Recent studies have shown that this and they receptors are expressed in human Leydig cells, Sertoli spermatogonia, spermatocytes sperm cells after birth, involved the endocrine regulation of spermatogenesis. However, there no report on expression TGF-β embryonic testis. TGF-β1 peptide widely distributed ...
This research aims to study testis and epididymis of dry land goat (Capra hircus) on B-mode ultrasound imaging. Twelve adult local male goats were examined normal testes ultrasonic appearances. real time scanner with a 7.5 MHz, linear array transducer was used evaluate the echotexture testicular parenchyma, mediastinum epididymis. The parenchyma represented uniformly homogenous moderately echog...
Perineal Ectopic Testis in One and A Half Year Old Child As A Rare Congenital Anomaly: A Case Report
Ectopic testis is described as an abnormality of testicle development in which one or both testicles aren’t descending through the normal pathways. Among all newborns with undescended testis, only 1% are diagnosed ectopic testis. In this case, 18 months old boy was presented to hospital chief complaint impalpable dextra. Phsical examination showed right not palpable scrotum and perineum. Ultras...
سرطان عامل اصلی مرگ در کشورهای توسعه یافته اقتصادی و دومین عامل مرگ در کشورهای در حال توسعه است. سرطان کولورکتال یکی از سومین سرطان رایج و چهارمین دلیل مرگ و میر در جهان است. سرطان کولورکتال در ایران، در مردان، چهارمین سرطان بوده و در زنان دومین سرطان محسوب می¬شود. بیشترین مرگ و میر ناشی از سرطان کولورکتال به علت متاستاز دادن آن است. تشخیص زود هنگام و اتخاذ روش های درمانی مناسب برای این افراد ا...
Samenvatting In dit case report beschrijven wij een 36-jarige man, die zich op de Spoedeisende Hulp presenteerde met pijn in rechterflank en rechter testis, bleek te berusten segmenteel infarct van testis. Een testisinfarct is zeldzame oorzaak acute scrotale echografisch lastig onderscheiden testistumor. De vaak idiopathisch. Predisponerende factoren zijn onder andere infectie, trauma hematolog...
in order to study the anatomy and histology of the testis and epididymis of caspian miniature horse, five adult stallions were used. routine anatomical and histological methods were used. anatomical study indicated that there were no differences between the testis and epididymis of the caspian miniature horse with the ordinary horse, except with the smaller sizes. the epididymis is attached to ...
Testis tortion in the newborn (especially antenatal testis tortion) is observed very rarely and constitutes 10-12% of childhood testis tortions. In testis tortion, firm and painless testicular tissue is palpated on physical examination. Doppler ultrasonography is a sensitive method in the diagnosis. In cases of neonatal testis tortion, the testis can be saved with appropriate surgical explorati...
PURPOSE Retractile testis is considered to be a variant of normal testis in prepubertal boys. There is no agreed-upon management of retractile testis. The aim of this study was to provide data on the long-term outcomes of patients with retractile testis. MATERIALS AND METHODS This study retrospectively reviewed the medical record of 43 boys who were referred for suspected undescended or retra...
The testis is the special male gonad responsible for spermatogenesis and steroidogenesis with complex gene expressions. Characterizing and comparing the testis-specific genes in different species can reveal key genes related to testis specific functions and provide supplementary information for study of human testis function. We screened testis-specific genes from Unigene libraries, total 317, ...
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