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Histopathology of prepubertal rat testes subjected to various durations of spermatic cord torsion
spermatic cord torsion rat
2009/2/23
Sixty prepubertal rats were subjected to unilateral spermatic cord torsion for a duration of 0, 1, 3, 5, 9 or 12 hours. At the end of this period, the ipsilateral testes either were removed for imme...
Stagnation of blood in the microvasculature of the affected and contralateral testes of men with short-term torsion of the spermatic cord
Testis germ cells microvasculature electron microscopy torsion
2009/2/23
Bilateral testicular biopsies from four men with a short duration (3 hours 10 minutes to 4 hours 30 minutes) of unilateral spermatic cord torsion and testicular biopsies from six men with irreversib...
Stagnation of blood in the microcirculatory vessels in the testes of men with varicocele
blood microcirculatory vessels men varicocele
2009/2/20
This study reports on the stagnation of blood within the microcirculatory vessels of the testes of patients with varicocele. Both fine structural and quantitative studies were carried out on testi...
Seminiferous tubule degeneration in human cryptorchid testes
Seminiferous tubule degeneration human cryptorchid testes
2009/2/20
Two types of degenerating seminiferous tubules were found in cryptorchid testes with Sertoli cell hyperplasia of children and adults: 1) tubules with central degeneration, and 2) tubules with total ...
Squash preparation studies of germ cells in human fetal testes
testis preleptotene germ cells chromosomes
2009/2/20
Testes from human fetuses 21 to 41 weeks of gestation were investigated using a modified squash technique. At all of the gestational ages examined, 90 to 95% of the germ cells were in interphase. Pr...
Ultrastructural lesions in testes from hyperprolactinemic men
Ultrastructural lesions testes hyperprolactinemic men
2009/2/20
Testicular tissue from eight men with prolactinomas and elevated serum prolactin were evaluated by light (LM) and transmission electron microscopy (TEM). A semiquantitative assessment of testicular ...
Ultrastructure and intercellular vacuolization of isolated perfused and control rat testes
testis perfusion rat ultrastructure
2009/2/20
Isolated rat testes perfused in closed circuit with albuminated Krebs-Ringer bicarbonate buffer were examined by light and electron microscopic techniques in order to assess the structural integrity...
Effects of Experimentally Induced Hyperprolactinemia on the Hypothalamus, Pituitary, and Testes in the Golden Hamster
hyperprolactinemia hypothalamus pituitary testis prolactin follicle-stimulating hormone norepinephrine testosterone dopamine luteinizing hormone releasing hormone
2009/2/19
Hyperprolactinemia was induced in adult male golden hamsters by transplantation of four homologous pituitaries under the renal capsules. The resulting elevation of plasma prolactin (PRL) levels wa...
Low-molecular-weight Inhibin from Sheep, Human, Rat, and Chicken Testes
inhibin testes avian mammalian
2009/2/19
Low-molecular-weight peptides with inhibin activity have been isolated from sheep, human, rat, and chicken testes by simple gel filtration. These peptides, isolated from avian and mammalian specie...
In Vitro Effect of Inhibin on Cyclic AMP-Phosphodiesterase Activity in Rat Testes
inhibin cyclic AMP-phosphodiesterase
2009/2/19
We have previously reported that incubation of testicular slices with inhibin in the presence of 6 x 10-8 M oFSH resulted in a dose-related reduction in accumulation of cyclic AMP due to a decreas...
Retained Undescended Testis in a 51-Year-old“Anorchic”Man: The Implications of Endocrine Evaluation in the Adult Male With Impalpable Testes
Retained Undescended Testis 51-Year-old "Anorchic" Man Implications Endocrine Evaluation
2009/2/19
A 51-year-old man with previously diagnosed bilateral anorchia was shown by endocrine investigation of his hypophyseal-gonadal axis to have functioning testicular tissue. The implications of endocri...
Expression of 140-kDa neural cell adhesion molecule in developing testes in vivo and in long-term Sertoli cell-gonocyte cocultures
Testicular development cell adhesion NCAM immunostaining
2009/2/17
The basis for cell-cell adhesion in the seminiferous epithelium of the developing testis is doubtless critical in supporting events that are essential for the onset and maintenance of normal sperm...
Ethnic differences in testicular structure and spermatogenic potential may predispose testes of Asian men to a heightened sensitivity to steroidal contraceptives
Spermatogenesis ethnicity
2009/2/17
Spermatogenesis in Asian men appears to be more susceptible to suppression by steroidal contraceptives administered in clinical trials than spermatogenesis in Caucasian men. The objective of this ...
Dogfish shark（Squalus acanthias）testes contain a relaxin
Testicular polypeptides testicular hormones hormonal
2009/2/17
Relaxin is a 6-kd polypeptide that exerts important hormonal effects in many female mammals. Relaxin is produced by the ovary, placenta, or uterus in many mammalian species. The functions of relax...
Impaired germ cell development in the testes of immature rats with neonatal hypothyroidism
Gonocyte Sertoli cell thyroid hormone stereology optical disector germ cell number
2009/2/17
The induction of neonatal hypothyroidism from day 1 to day 25 postpartum using 6-propyl-2-thiouracil (PTU) resulted in a 45% and 77% reduction of testis weight on days 20 and 30, respectively, and a...