Results 41 to 50 of about 4,930,458 (259)

Plasma and testicular testosterone levels, volume density and number of Leydig cells and spermatogenic efficiency of rabbits

Brazilian Journal of Medical and Biological Research, 2002
Plasma and tissue testosterone concentrations were determined by radioimmunoassay in 12 eight-month-old sexually mature New Zealand White rabbits and evaluated for possible associations with spermatogenic efficiency as well as with volume density and ...
A.C.S. Castro, W.E. Berndtson, F.M. Cardoso   +2 more
doaj   +1 more source

Grtp1 Safeguards Against Paternal Reproductive Aging and Intergenerational Behavioral Deficits by Preserving Redox Homeostasis

Advanced Science, EarlyView.
This study identifies that Grtp1 maintains germline redox homeostasis by interacting with PRDX1/4‐TXN to antagonize paternal reproductive aging. Growth hormone restores Grtp1 expression, rectifies aberrant sperm DNA methylation, and ameliorates intergenerational anxiety and social deficits, highlighting the GH‐GRTP1 axis as a promising intervention ...
Yingdong Liu, Shanyao Liu, Haixin Liang, Jiani Yang, Yanhe Li, Jiqing Yin, Xueguang Zhang, Yan Zhang, Dandan Bai, Zihui Yan, Zhuoao Zhang, Yanping Jia, Kuisheng Liu, Yifan Sheng, Jiani Xiang, Chenxiang Xi, Baoxing Dong, Xinyi Lei, Jiayu Chen, Hong Wang, Yi Guo, Yanping Zhang, Shaorong Gao, Wenqiang Liu   +23 more
wiley   +1 more source

DUET‐seq: An Open‐Source Droplet Platform for High‐Fidelity Joint Chromatin and Transcriptome Profiling Reveals Temporal Regulatory Decoupling in Single Cells

Advanced Science, EarlyView.
DUET‐seq is an open‐source droplet platform that jointly profiles chromatin accessibility and gene expression from the same nucleus. Dissolvable dual‐linker hydrogel beads and a one‐step intra‐droplet RT‐PCR co‐index both modalities in under 12 h at roughly $0.04 per cell.
Dong Cheng, Zijun Meng, Lan Wei, Pingjing Yang, Fanfan Zhang, Zhiyi Luo, Ting Lai, Chunli Li, Mengyao Zhao, Mengqin Xu, Jiaqi Wang, Linjun Li, Huarong Chen, Jin Li, Ailong Huang, Youquan Bu, Liuyang Zhao   +16 more
wiley   +1 more source

Evaluation of therapeutic effects of D‐limonene following orchiopexy in the rat model of cryptorchidism

Animal Models and Experimental Medicine, EarlyView.
D‐limonene supplementation enhances testicular recovery following orchiopexy in a rat model of bilateral cryptorchidism. Treatment with D‐limonene reduces oxidative stress (↓MDA, ↑SOD, ↑GPx, ↑TAC), downregulates pro‐apoptotic proteins (↓TNF‐α, ↓BAX, ↓Caspase‐3), and upregulates anti‐apoptotic Bcl‐2 expression.
Arman Norouzi‐Ghalehbala, Mohammadjavad Rezaei‐Varmaziar, Majid Taati, Ali Soleimanzadeh, Abbas Raisi, Farshid Davoodi, Amir Ali Shahbazfar   +6 more
wiley   +1 more source

Simultaneous Sertoli Cell-Only Syndrome and Leydig Cell Tumor in a Patient with Azoospermia: A Rare Case Report

Case Reports in Oncology, 2022
Testicular cancers comprise 1–1.5% of entire cancers in men, and sex cord-stromal tumors include 5% of testicular cancers. This study aims to report a simultaneous Sertoli cell-only syndrome and Leydig cell tumor in the same patient.
Rawa Bapir, Rawezh Q. Salih, Karzan M. Salih, Bana Shabur, Abdulwahid M. Salih, Fahmi H. Kakamad, Hiwa O. Abdullah, Fattah H. Fattah, Shvan H. Mohammed   +8 more
doaj   +1 more source

Bone morphogenetic protein 4 inhibits rat stem/progenitor Leydig cell development and regeneration via SMAD-dependent and SMAD-independent signaling

Cell Death and Disease, 2022
Bone morphogenetic protein 4 (BMP4) is an important member of the transforming growth factor-β superfamily. BMP4 is expressed in the Leydig cell lineage. We hypothesized that BMP4 might regulate the development of stem/progenitor Leydig cells.
Xiaoheng Li, Yinghui Fang, Lanlan Chen, Hehua Quan, Yiyan Wang, Ren-Shan Ge   +5 more
doaj   +1 more source

Determining the timeline of gonadal and genital differentiation in male and female equine fetuses allows for early detection and intervention in malformations

The Anatomical Record, EarlyView.
Abstract Sexual differentiation in the equine fetus involves coordinated morphogenetic processes that shape both the gonads and the genital ducts. Although the formation of testes and ovaries has been relatively well documented, the temporal dynamics and morphometric patterns of the mesonephric (Wolffian) and paramesonephric (Müllerian) ducts remain ...
Tais Harumi de Castro Sasahara, Silvio Pires Gomes, Fabio Cesar Magioli Abdala, Bruno Cesar Schimming, Maria Angelica Miglino   +4 more
wiley   +1 more source

Long-term suppression of Leydig cell steroidogenesis prevents Leydig cell aging [PDF]

Proceedings of the National Academy of Sciences, 1999
Male aging is accompanied by reduced testosterone production by the Leydig cells, the testosterone-producing cells of the testis. The mechanism by which this occurs is unknown. Based on the observations that reactive oxygen is capable of damaging components of the steroidogenic pathway and that reactive oxygen is produced during steroidogenesis itself,
H, Chen, B R, Zirkin
openaire   +2 more sources

Characterization of stem cells associated with seminiferous tubule of adult rat testis for their potential to form Leydig cells

Stem Cell Research, 2019
Adult testicular Leydig cells arise from stem cells in the neonatal and adult testis. The nature of these stem Leydig cells (SLCs) have not been well characterized.
Xiaoju Guan, Panpan Chen, Xingxing Zhao, Xinrui Hao, Fenfen Chen, Minpeng Ji, Xin Wen, Han Lin, Leping Ye, Haolin Chen   +9 more
doaj   +1 more source

Essential roles of COUP-TFII in Leydig cell differentiation and male fertility. [PDF]

PLoS ONE, 2008
Chicken Ovalbumin Upstream Promoter-Transcription Factor II (COUP-TFII; also known as NR2F2), is an orphan nuclear receptor of the steroid/thyroid hormone receptor superfamily.
Jun Qin, Ming-Jer Tsai, Sophia Y Tsai
doaj   +1 more source