Hormone Secretion by Experimental Cryptorchid Testes *
نویسنده
چکیده
This investigation has been aided by a grant from the Dr. Wallace C. and Clara A. Abbott Memorial Fund of The University of Chicago. Grateful acknowledgment is made to the following individuals for providing the gonadotrophic substances employed in the investigation. To Mr. Donald C. Wonder for Gonadin; to Dr. Oliver Kamm for Antuitrin-S; to Dr. J. A. Morrell for Prospermine; and to Dr. G. H. Hart for untreated pregnant mare serum.
منابع مشابه
Impaired estrogen production by Leydig cells of the naturally retained testis in unilaterally cryptorchid boars and stallions.
Estrogen production in vitro was compared for Leydig cells from cryptorchid and scrotal testes in boars and stallions. Animals with natural and experimental cryptorchidism were used. Purified Leydig cells were prepared from testes of mature animals by collagenase treatment and Percoll density gradients. After incubation for 3 hours (1 X 10(6) cells), estrone sulfate and estrone in the media wer...
متن کاملThe effects of cryptorchidism on the regulation of steroidogenesis and gap junctional communication in equine testes.
INTRODUCTION Evidence collected over the years has demonstrated that cryptorchidism is associated with a defect in spermatogenesis and, as a consequence, with either reduced fertility or infertility. However, the effect of cryptorchidism on Leydig cell function is less clear. The aim of our study therefore was to investigate the regulation of steroid hormone biosynthesis and, additionally, inte...
متن کاملAnti-Müllerian hormone as an indicator of hemi-castrated unilateral cryptorchid horses
Anti-Müllerian hormone (AMH), a glycoprotein secreted from the fetal testis, is responsible for regression of the Müllerian duct in the male fetus. The aim of this study was to evaluate the usefulness of serum AMH as a biomarker for diagnosis of cryptorchidism in horses. Serum AMH concentrations were measured in intact stallions, hemi-castrated unilateral cryptorchid stallions, and geldings. In...
متن کاملAndrogen secretion and characteristics of testicular HCG binding in cryptorchid rats.
Response of the cryptorchid testis to gonadotrophic stimulation was assessed by comparison of the androgen production capability in vivo and in vitro with that of the normal scrotal testis. Serum androgen concentrations in cryptorchid rats were similar to those in normal rats, and the incremental increase 60 min after 50 i.u. hCG (i.v.) was about 7-fold for both groups. Basal and hCG-stimulated...
متن کاملEffect of Vitamin C on Epididymal Sperm Quality in the Rat Experimentally Induced Unilateral Cryptorchidism
Objective- Release of free radicals and oxidants following increased temperature of testis in cryptorchidism, play an important role in the producing testicular damage. The present study investigated the role of vitamin C as an antioxidant in protecting the testis against damage in experimental unilateral cryptorchidism. Design- Experimental study Animals- Forty five male adult Wistar–Albino ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- The Yale Journal of Biology and Medicine
دوره 17 شماره
صفحات -
تاریخ انتشار 1944