## Abstract Leukemia inhibitory factor (LIF) promotes the survival of oligodendrocytes both in vitro and in an animal model of multiple sclerosis, but the possible role of LIF signaling in myelination during normal development has not been investigated. We find that LIF^β/β^ mice have a pronounced
Key factors in the regulation of fetal and postnatal leydig cell development
β Scribed by Xiufeng Wu; Shengqin Wan; Mary M. Lee
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 110 KB
- Volume
- 213
- Category
- Article
- ISSN
- 0021-9541
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
The primary function of testicular Leydig cells is the production of androgens to promote sexual differentiation in the fetus, secondary sexual maturation at puberty, and spermatogenesis in the adult. The fetal and postnatal (adult) populations of Leydig cells differ morphologically and have distinct profiles of gene expression. As postnatal Leydig cells differentiate, they transition through three discrete maturational stages characterized by decreasing proliferative rate and increasing testosterone biosynthetic capacity. In this review, we discuss the development of both fetal and postnatal Leydig cells and review the regulation of this process by some of the key hormones and growth factors. J. Cell. Physiol. 213: 429β433, 2007. Β© 2007 WileyβLiss, Inc.
π SIMILAR VOLUMES
## Abstract The mammalian heart lacks the capacity to replace the large numbers of cardiomyocytes lost due to cardiac injury. Several different cellβbased routes to myocardial regeneration have been explored, including transplantation of cardiac progenitors and cardiomyocytes into injured myocardiu
The morphology, frequency, and distribution of mitotic cells in the epithelium of the Harderian gland was studied in the male and female hamster from birth to the ninetieth day of postnatal life using light and electron microscopic techniques. The results obtained show that there is a gradual declin
Epidermal growth factor (EGF) and transforming growth factor-a (TGF-a) regulate branching morphogenesis of fetal mouse submandibular gland (SMG) rudiments in vitro. The EGF system (EGF, TGF-a, and their shared receptor, EGFR) also regulates expression of integrins and their ligands in the extracellu