Results 211 to 220 of about 4,991 (262)

Activins and Cell Migration

Vitamins and Hormones, 2011
Activins are the members of transforming growth factor β superfamily and act as secreted proteins; they were originally identified with a reproductive function, acting as endocrine-derived regulators of pituitary follicular stimulating hormone. In recent years, additional functions of activins have been discovered, including a regulatory role during ...
Hong-Yo Kang, Chih-Rong Shyr
exaly   +3 more sources

Activins and their receptors in female reproduction [PDF]

Biochemistry and Cell Biology, 2000
Activins are growth and differentiation factors belonging to the transforming growth factor-β superfamily. They are dimeric proteins consisting of two inhibin β subunits. The structure of activins is highly conserved during vertebrate evolution. Activins
Chun Peng
exaly   +2 more sources

Bovine preantral follicles and activin: Immunohistochemistry for activin and activin receptor and the effect of bovine activin a in vitro

Theriogenology, 1997
Activin was originally isolated from follicular fluid as a factor stimulating FSH from the pituitary. Recent studies also suggest a local role for activin in the development of preantral and early antral follicles. In the present study, activin and activin receptor immunoreactivity are shown in oocyte and granulosa cells of bovine preantral follicles ...
S C, Hulshof, J R, Figueiredo, J F, Beckers, M M, Bevers, H, Vanderstichele, R, van den Hurk   +5 more
openaire   +2 more sources

Activin A and Activin Receptors in Thyroid Cancer

Thyroid, 2001
Proliferation is controlled by a network of mitogenic and growth inhibitory factors. Transforming growth factor-beta1 (TGF-beta1) and activin A are the most important growth inhibitors of benign follicular epithelial cells of the human thyroid. The effects of these substances on malignant primary thyrocytes are not known.
K M, Schulte, C, Jonas, R, Krebs, H D, Röher   +3 more
openaire   +2 more sources

Activins and activin antagonists in the prostate and prostate cancer

Molecular and Cellular Endocrinology, 2012
Activins are members of the TGF-β super-family. There are 4 mammalian activin subunits (β(A), β(B), β(C) and β(E)) that combine to form functional proteins. The role of activin A (β(A)β(A)) is well characterized and known to be a potent growth and differentiation factor.
Elspeth, Gold, Gail, Risbridger
openaire   +2 more sources

Inhibins and Activins

1988
Publisher Summary This chapter discusses the isolation, structure, characterization, and biosynthesis of inhibins and activins. The two pituitary gonadotropins, luteinizing hormone (LH) and follicle-stimulating hormone (FSH) which regulate the development and maturation of the gonad, are identified.
N, Ling, N, Ueno, S Y, Ying, F, Esch, S, Shimasaki, M, Hotta, P, Cuevas, R, Guillemin   +7 more
openaire   +2 more sources

Activin, Activin-Binding Protein (Follistatin) and Activin Receptor

1993
The principal regulators of the pituitary gonadotropins LH and FSH in mammals are the gonadotropin-releasing hormone (GnRH) from the hypothalamus and the gonadal steroids.
Hiromu Sugino, Takanori Nakamura, Kishiko Sugino, Koiti Titani   +3 more
openaire   +1 more source

Activin A In Brain Injury

2007
Activin A is a growth factor composed of two betaA subunits belonging to the transforming growth factor beta (TGF-beta) superfamily of dimeric proteins. The biological activity of activin A is mediated by two different types of receptors, the type I (ARI and ARIB) and the type II receptors (ARII and ARIIB), and by two activin-binding proteins ...
Florio, Pasquale, Gazzolo, Diego, Luisi, Stefano, Petraglia, Felice   +3 more
openaire   +3 more sources

Activins [PDF]

, 2008
openaire   +2 more sources

Activins [PDF]

, 2006
core   +3 more sources