نتایج جستجو برای: testes morphometry

تعداد نتایج: 18398  

2017
Aashish Rajesh Mohammed Farooq

INTRODUCTION Persistent Mullerian duct syndrome (PMDS) is a rare type of male pseudohermaphroditism. Transverse testicular ectopia (TTE) is characterized by one testis moving to the opposite side and both testes traversing the same inguinal canal. CASE PRESENTATION An 11-month-old boy presented with bilateral cryptorchidism. The left testis was not palpable; the right testis was canalicular w...

Journal: :Fertility and sterility 2015
Craig Niederberger

Bisphenol A (BPA) is a widely studied typical endocrine-disrupting chemical, and one of the major new issues is the safe replacement of this commonly used compound. Bisphenol S (BPS) and bisphenol F (BPF) are already or are planned to be used as BPA alternatives. With the use of a culture system that we developed (fetal testis assay [FeTA]), we previously showed that 10 nmol/L BPA reduces basal...

2012
Mingxi Liu Lin Qi Yan Zeng Yang Yang Ye Bi Xiaodan Shi Hui Zhu Zuomin Zhou Jiahao Sha

BACKGROUND In most mammals, the testes provide a stable environment for spermatogenesis, which depends on a lower temperature than the core body temperature. It has been reported that mild testicular heating safely and reversibly suppresses spermatogenesis, and is under consideration for its potential application as a male contraceptive. Previously, we focused on the molecular mechanism of germ...

2013
Qinglian Zhang Jinhu Ma

The expression of LDH-C (Lactate dehydrogenase C) gene is restricted in mature germ cells; however multiple splice variants of LDH-C expressed in human cancers and yak normal testes were reported recently. In order to know if there are any LDH-C splice variants in human normal testes, we set out to clone the putative variants in human and rat. Four splicing variants in human testes, 1 splicing ...

Journal: :Archives of histology and cytology 2004
Takehiko Ogawa Chizuru Ito Takahisa Nakamura Yoichi Tamura Tadashi Yamamoto Tetsuo Noda Yoshinobu Kubota Kiyotaka Toshimori

Cnot7 is a co-factor of transcription regulation, expressed in a variety of tissues including the lung, liver, thyroid gland, and testis. Our previous study (Nakamura et al., 2004) showed that deletion of the Cnot7 gene in mice caused almost no abnormal phenotypes except for male infertility, due to oligo-astheno-teratozoospermia. This study also showed that Cnot7-/- mouse germ cells transplant...

Journal: :Evolution; international journal of organic evolution 2009
Stefan Lüpold George M Linz James W Rivers David F Westneat Tim R Birkhead

Sperm morphology varies considerably across taxa, and postcopulatory sexual selection is thought to be one of the main forces responsible for this diversity. Several studies have investigated the effects of the variation in sperm design on sperm function, but the consequences of variation in sperm design on testis morphology have been overlooked. Testes size or architecture may determine the si...

Journal: :RNA 2007
Kazumichi M Nishida Kuniaki Saito Tomoko Mori Yoshinori Kawamura Tomoko Nagami-Okada Sachi Inagaki Haruhiko Siomi Mikiko C Siomi

Genetic studies have shown that Aubergine (Aub), one of the Piwi subfamily of Argonautes in Drosophila, is essential for germ cell formation and maintaining fertility. aub mutations lead to the accumulation of retrotransposons in ovaries and testes, and Stellate transcripts in testes. Aub in ovaries associates with a variety of Piwi-interacting RNAs (piRNAs) derived from repetitive intergenic e...

2014
BAO-GUO XIE JING LI WEI-JIE ZHU

Mouse testicular experimental models are widely used in the study of andrology, reproductive toxicology and pharmacology. Under physiological conditions, a normal adult mouse is usually considered to have normal testes. However, whether normal adult mouse testes exhibit pathological changes has not been evaluated. The objective of this study was to investigate the pathological changes of testic...

Journal: :NeuroImage 2012
Joshua M. Carlson Felix Beacher Karen S. Reinke Reza Habib Eddie Harmon-Jones Lilianne R. Mujica-Parodi Greg Hajcak

An important aspect of the fear response is the allocation of spatial attention toward threatening stimuli. This response is so powerful that modulations in spatial attention can occur automatically without conscious awareness. Functional neuroimaging research suggests that the amygdala and anterior cingulate cortex (ACC) form a network involved in the rapid orienting of attention to threat. A ...

Journal: :NeuroImage 2009
Kristine B. Walhovd Anders M. Fjell Inge K. Amlien Ramune Grambaite Vidar Stenset Atle Bjørnerud Ivar Reinvang Leif Gjerstad Tone Cappelen Paulina Due-Tønnessen Tormod Fladby

This study compared sensitivity of FDG-PET, MR morphometry, and diffusion tensor imaging (DTI) derived fractional anisotropy (FA) measures to diagnosis and memory function in mild cognitive impairment (MCI). Patients (n=44) and normal controls (NC, n=22) underwent FDG-PET and MRI scanning yielding measures of metabolism, morphometry and FA in nine temporal and parietal areas affected by Alzheim...

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