Sentences with word «granulosa»

Tumors of ovarian stromal cells include granulosa cell tumors, thecomas and interstitial cell tumors (luteomas).

Berberine improves insulin resistance in granulosa cells in similar way to metformin.

Rebecca Bartlett - «The effects of female pheromone on somatosensory neural activity in Taricha granulosa and its possible mediation by AVT» (Advisor: Dickinson / Thompson)

At birth, the primordial follicles contain the oocyte surrounded by granulosa cells.

These are called granulosa cells, and under the microscope they look like grapes glued to a beach ball.

In fact, Albertini has preliminary evidence suggesting that the communication between the egg cell and its surrounding granulosa cells rises and falls in a precise monthly cycle.

Leptin inhibits gonadotrophin - stimulated granulosa cell progesterone production by antagonizing insulin action.

Van Blerkom had been seeing hints of polarity since the 1970s, but one of the major turning points occurred in 1996 when, by accident, his lab discovered that cells surrounding the developing egg — the same granulosa cells that had piqued Albertini's interest — possessed a receptor very similar to the leptin receptor.

Mycotoxin zearalenone exposure impairs genomic stability of swine follicular granulosa cells in vitro Xue - Lian Liu, Rui - Ying Wu, Xiao - Feng Sun, Shun - Feng Cheng, Rui - Qian Zhang, Tian - Yu Zhang, Xi - Feng Zhang, Yong Zhao, Wei Shen, Lan Li International Journal of Biological Sciences 2018; 14:294 - 305

The fertility problems associated with polycystic ovary syndrome (PCOS) may be partly due to abnormal granulosa cell expression of estrogen receptors (ERs) in women with the condition, a study shows.

Thyroid hormones have also been found to augment steroidogenesis from granulosa and large luteal cells.2

Once recruited, it takes more than 300 days for a follicle to complete the preantral period, during which time granulosa cells replicate and theca cells are recruited.

Thyroid hormones work synergistically with follicle - stimulating hormone to develop healthy granulosa cells.

Stromal granulosa cell, epithelial tumors and dysgerminomas may become very large, in which case a swollen abdomen is the main sign.

It is thought that some surface skin tumors can be induced by ovarian granulosa tumors.

Some studies have found breeds like Boxers, German Shepherds, Yorkshire Terriers, English Bulldogs to be at an increased risk for granulosa - theca cell tumors, a type of sex cord stromal cell tumor.

Sex cord stromal cell tumors like granulosa cell tumor has been reported in dogs between 14 months to 16 years.

Taricha newts of western North America are particularly toxic; the Rough - skinned Newt (Taricha granulosa) of the Pacific Northwest produces more than enough tetrodotoxin to kill an adult human foolish enough to swallow a newt.

A mature egg, ready for fertilization, is covered with clusters of granulosa cells.

Woo MM, et al, «Direct action of melatonin in human granulosa - luteal cells,» J Clin Endocrinol Metab 001 Oct; 86 (10): 4789 - 97.

Because estrogen has been shown to be essential for folliculogenesis beyond the antral stage, it is perhaps not surprising that ERβ mRNA and protein are reduced in granulosa cells and theca cells from PCOS patients.

The Colorado lab discovered that granulosa cells — the cells that surround maturing eggs in the ovarian follicles — were pumping out leptin and shipping it into the egg.

And with that, he began prying away the granulosa cells clinging to the eggs, in order to get a better microscopic view of the nascent embryos to see if they were developing properly.

If you believe, for example, that granulosa cells and other very early features of ovarian ecology set up the polarities that ultimately determine the quality of a human egg, as Albertini does, then certain techniques widely used in IVF may be subtly perturbing the very mechanisms that eggs use to establish a plan to build an embryo and maximize the chances that it will develop properly.

From the time an egg begins to develop in one of a woman's ovaries, the granulosa cells serve as a communication system — signaling, for example, when the egg needs nutrients and proteins.

Albertini and his colleagues noticed that the interaction between the oocyte and the cells surrounding it was not symmetrical; there were more cells — and, it would turn out, more molecular back - and - forth traffic between the egg and the granulosa cells — at certain regions on the egg.

Thompson, RR, Tokar, Z, * Pistohl, D * Moore, FL. (1999) Behavioral evidence for a sex - pheremone in roughskin newts, Taricha granulosa.

Identifiication and characterization of mesotocin and V1a - like receptors in a urodele amphibian, Taricha granulosa.

Expression of ER - alpha mRNA was similar in control and PCOS follicles in the granulosa cells, but in the theca cells, ER - alpha concentrations were significantly increased in the PCOS samples, compared with the controls.

Similarly, in a rodent model of PCOS, levels of ERβ protein were decreased in the granulosa layers of cystic follicles.67 Idiopathic ovulatory dysfunction has been found to be associated with a G / A (1730) polymorphism in ERβ.2.

By the end of the follicular phase, the luteinizing hormone surge results in ejection of the oocyte and transforms the remaining follicle into the corpus luteum; small and large luteal cells are formed from theca and granulosa cells, respectively.

Excess androgens cause the granulosa cells of the ovary to over-express AMH in response to FSH.

During the first 2 - week period of the cycle, theca cells produce androgens, and granulosa cells aromatize androgens to estrogen.

These mares can have a tumor on an ovary called a granulosa theca cell tumor.