Results 241 to 250 of about 2,475,670 (267)

Mechanisms of follicle selection and development.

Minerva ginecologica, 2011
Follicle recruitment and selection, the process that gives rise to the dominant follicle (DF) and the physiological state of the DF are important areas of research. The selection of a single ovarian follicle for further differentiation and finally ovulation is a shared phenomenon in monovulatory species including humans.
W Y, Son, M, Das, E, Shalom-Paz, H, Holzer   +3 more
openaire   +1 more source

Follicle blood flow and FSH concentration associated with variations in characteristics of follicle selection in heifers

Theriogenology, 2019
Selection of the dominant follicle during a follicular wave is manifested by diameter deviation. At deviation (day 0), growth rate continues for the future dominant follicle (F1) and begins to decrease for the largest subordinate follicle (F2). The percentage of color-Doppler blood-flow signals in the wall of F1 and F2 and the temporality between FSH ...
O J, Ginther, S V, Dangudubiyyam, R R, Domingues   +2 more
openaire   +2 more sources

A model for follicle selection and the determination of ovulation rate in the ewe

Reproduction, Fertility and Development, 1993
A model for folliculogenesis is proposed that is based as far as possible on a knowledge of physiological, rather than anatomical, changes taking place during follicle development. The model is therefore functional, rather than descriptive, and consists of five classes of follicles that have been defined by their dependency and sensitivity to ...
RJ Scaramuzzi, NR Adams, DT Baird, BK Campbell, JA Downing, JK Findlay, KM Henderson, GB Martin, KP McNatty, AS McNeilly, CG Tsonis   +10 more
openaire   +2 more sources

The feasibility of targeted selective gene therapy of the hair follicle

Nature Medicine, 1995
Loss of hair and hair colour is associated with ageing, and when it involves the scalp hair, it can be distressing to both sexes. Hair loss resulting from cancer chemotherapy is particularly distressing. However, safe, effective therapies directed to hair have only just started to be developed.
L, Li, R M, Hoffman
openaire   +2 more sources

A multiscale model for the controlled selection process of ovulatory follicles

Proceedings of the 44th IEEE Conference on Decision and Control, 2006
The biological meaning of follicular development is to free fertilizable oocytes at the time of ovulation. The selection of ovulatory follicles in mammal ovaries is an FSH-dependant selection process. In this paper, we design a multi-scale model of follicular development, where selection arises from the feedback between the ovaries and the pituitary ...
Nki Echenim, Michel Sorine, Frédérique Clément   +2 more
openaire   +2 more sources

Selective Macropinocytosis of Thyroglobulin in Rat Thyroid Follicles^*

Endocrinology, 1983
We have explored the possibility that pseudopods might provide a mechanism by which newly synthesized, hormone-poor thyroglobulin recently delivered to the follicle lumen escapes immediate reuptake and degradation. The study was performed with electron microscopic autoradiography on rats pretreated with T4 for 2 days and injected with [3H]leucine or ...
L E, Ericson, K M, Ring, T, Ofverholm
openaire   +2 more sources

Follicle selection in cattle: follicle deviation and codominance within sequential waves.

Biology of reproduction, 2001
Follicle deviation during bovine follicular waves is characterized by continued growth of a developing dominant follicle and reduction or cessation of growth of subordinate follicles. Characteristics of follicle deviation for waves with a single dominant follicle were compared between wave 1 (begins near ovulation; n = 15) and wave 2 (n = 15 ...
L J, Kulick, D R, Bergfelt, K, Kot, O J, Ginther   +3 more
openaire   +1 more source

[Mechanism of ovarian follicle selection for ovulation].

Morfologiia (Saint Petersburg, Russia), 1999
Mechanisms of ovarian follicles selection for ovulation remain incompletely deciphered. Studying mechanisms of transmission of hormonal stimulatory and inhibitory signals to follicular histion somatic cells may assist in progress in this area of knowledge.
O V, Volkova, T G, Borovaia, L V, Didenko   +2 more
openaire   +1 more source

The Role of Gonadotropins in the Selection of the Preovulatory Follicle

Clinical Obstetrics and Gynecology, 1984
A J, Zeleznik, S G, Hillier
openaire   +2 more sources

Luteinizing hormone pulses, follicle-stimulating hormone and control of follicle selection in sheep.

Journal of reproduction and fertility. Supplement, 1993
The growth of large oestrogenic follicles that have the potential to ovulate if given an appropriate luteinizing hormone (LH) signal is dictated by the plasma concentration of follicle-stimulating hormone (FSH). Basal amounts of LH are essential for this FSH-induced follicle growth, but pulses of LH do not appear to be essential.
A S, McNeilly, W, Crow, J, Brooks, G, Evans   +3 more
openaire   +1 more source