Last edited by Tugal
Wednesday, July 22, 2020 | History

4 edition of Rat ovarian cycle found in the catalog.

Rat ovarian cycle

Rat ovarian cycle

its relationship to liver glycogen content and exercise endurance

  • 319 Want to read
  • 23 Currently reading

Published .
Written in English

    Subjects:
  • Sexual cycle,
  • Liver -- Glycogenic function

  • Edition Notes

    Statementby Jerry Edgington.
    The Physical Object
    FormatMicroform
    Paginationvii, 49 leaves
    Number of Pages49
    ID Numbers
    Open LibraryOL13598027M
    OCLC/WorldCa9456588

    The menstrual cycle is the regular natural change that occurs in the female reproductive system (specifically the uterus and ovaries) that makes pregnancy possible. The cycle is required for the production of oocytes, and for the preparation of the uterus for pregnancy. The menstrual cycle occurs due to the rise and fall of estrogen. This cycle results in the thickening of the lining of the.   The ovarian cycle of the rat is the most thoroughly documented one among mammalian species. As noted earlier, the domestic rat has been the primary subject of medical research since the early twentieth century.

    The menstrual cycle is now thought to be mainly determined by the ovary itself, which sends various signals to the pituitary and the hypothalamus. The hypothalamus is an autonomous pacemaker, with a pulse frequency that is modulated by ovarian signals; in turn, it is indispensable to ovarian functio . The Ovarian Cycle and the Menstrual Cycle. The ovarian cycle governs the preparation of endocrine tissues and release of eggs, while the menstrual cycle governs the preparation and maintenance of the uterine lining. These cycles occur concurrently and are coordinated over a 22–32 day cycle, with an average length of 28 days.

    In addition to influencing food intake in general, ovarian hormones also have been implicated in the etiology and expression of eating disorder symptoms. 2, 3, 9 Recent studies have used within‐subject, longitudinal designs across the menstrual cycle to examine the role of ovarian hormones in binge eating behaviors, in particular. 2, 3 The.   Effect of ALLO on ovarian morphometry. Our results on E stage were published previously [22, 23] and they were included in this article in order to make comparisons results of the morphometric analysis are showed in Table number of PF decreased in D2 treated rats (pcycle .


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Rat ovarian cycle Download PDF EPUB FB2

The stage of the reproductive cycle cannot easily be determined from the appearance of the ovarian follicles in a species like the rat, which has a short estrous cycle. Follicles in virtually all stages of development are generally present within the ovaries at all phases of the by: The present results show that during the second estrous cycle after the start of PTU treatment the rats are frankly HypoT and show some alterations in hormone secretion, and in the expression of ovarian receptors, members of the GH/IGF family and cyp19A1 aromatase that may stimulate luteal function and survival and thus account for the Cited by: Rat ovarian cycle: its relationship to liver glycogen content and exercise endurance.

[Jerry Edgington] Home. WorldCat Home About WorldCat Help. Search. Search for Library Items Search for Lists Search for IndividualProduct\/a>, schema:Book\/a>, bgn:Thesis\/a> ; \u00A0\u00A0\u00A0\n bgn. Cell apoptosis or cell cycle arrest is activated when the Stkpp21 signaling pathway is expressed.

In the present study, it was found that TG treatment in rats caused significant ovarian granuloma cell apoptosis or necrosis. Furthermore, the expression of the Stkpp21 signaling pathway in the TG-treated rat ovaries was detected. This study found that the proliferation and progression of cell cycle in G0/G1 phase and S phase were inhibited, whereas the G2/M phase was enhanced by NP in rat ovarian GCs.

Rat ovarian cycle book, the cell cycle-associated protein p21 increased while cyclin D1 decreased : Teng Liu, Qian-Nan Di, Jia-Hui Sun, Meng Zhao, Qian Xu, Yang Shen.

DHEA-induced rats with PCOS exhibited significantly higher levels of fibrosis (collagen IV) in both ovarian and uterine tissues. Rat ovarian cycle book In ovarian tissue, the expression of connective tissue growth factor (CTGF) increased following DHEA treatment at both mRNA and protein levels (P.

The relation between ovulation and ovarian carcinoma in humans has attracted interest. 16, 17 Because the mitotic activity of mouse ovarian surface epithelial cells markedly increases during estrus, 18 interest may be focused on the timing of DMBA application during the ovarian cycle, and it is well known that in rats the vaginal cycle Cited by: After this prolonged hiatus, a subsequent menstrual cycle was normal in length and endocrine pattern.

A single s.c. administration of danazol resulted in a prolonged suppression of ovarian cyclicity in both normally cycling rats and cynomolgus monkeys.

Vaginal smears were daily made while the EEG was recorded continuously. The phase of the estrous cycle was determined on the basis of cytological examination. There were more spike-wave discharges at pro-estrus than at the other three days, suggesting a role for ovarian hormones.

Obesity constitutes a health problem of increasing worldwide prevalence. Among the health detriments caused by obesity, reproduction is disrupted. However, the mechanisms involved in this disruption are not fully understood. Animals fed a cafeteria diet constitute the model for the study of obesity that most closely reflects Western diet habits.

The aims of this study were to evaluate whether. (*)Assuming a 28 day cycle. There are two phases of the ovarian cycle the follicular phase and the luteal phase.

In the follicular phase about follicles are taken from preantral or early antrial follicles to develop further. Seven days later the dominant follicle is selected to develop to full maturity.

This is the pre-cursor for ovulation. Freeman, ME Knobil, E, Neill, JD The neuroendocrine control of the ovarian cycle of the rat The physiology of Reproduction 2 New York Raven Press Google Scholar Gosden, RG, Laing, SC, Felicio, LS, Nelson, JF, Finch, CE Imminent oocyte exhaustion and reduced follicular recruitment mark the transition to acyclicity in aging C57BL/6J mice.

Parabens are widely used preservatives in basic necessities such as cosmetic and pharmaceutical products. In previous studies, xenoestrogenic actions of parabens were reported in an immature rat model and a rat pituitary cell line (GH3 cells).

The relationship between parabens and ovarian failure has not been described. In the present study, the influence of parabens on ovarian. ABSTRACT. The two pituitary gonadotropins, luteinizing hormone (LH) and follicle-stimulating hormone (FSH), and the placental homologue of LH, human chorionic gonadotropin (hCG), play a pivotal role in the regulation of ovarian differentiation, growth, and endocrine and gametogenic functions.

Restoration of ovarian tissue function and estrous cycle in rat after autotransplantation using hyaluronic acid hydrogel scaffold containing VEGF and bFGF Growth Factors. Aug;34() doi: / women using hormonal contraception (36–40) or ovarian stimulation therapy for assisted reproduction (41, 42).

Despite the progress made in ovarian imaging during the past 30 years, there are limited data on the rates of growth of ovarian follicles in women. Follicles have been reported to grow in a linear fashion during the menstrual cycle (43).

Ramos SD, Lee JM, Peuler JD () An inexpensive meter to measure differences in electrical resistance in the rat vagina during the ovarian cycle. Journal of Applied Physiology View Article Google Scholar 7. Effects of oxytocin on rat ovarian contractility in vitro during the estrous cycle. BioI Reprod7.

Gimeno AL, Gimeno MF, Sterin de Borda L, Borda E: Endocrine factors influencing in vitro pharmacological responses of tubal and ovarian smooth muscle. Acta Physiol Lat Am8. Proliferative phase: day 4 – day 14 of menstrual cycle Hormonal control of endometrial changes during the menstrual cycle: SECRETORY PHASESECRETORY PHASE (days 14 – 28 of cycle) Secretory phase - under control of progesterone (luteal phase of ovarian cycle - uterine glands coiled, larger lumens - secrete glycogen, mucin Ovarian cycle – Describes the development and release of the oocyte (or immature egg) in the ovary and changes in the follicles.

Usually occurs within ~28 days. This cycle consists of the follicular phase and the luteal phase. Uterine cycle– Describes the preparation of the.

@article{osti_, title = {Luteinizing hormone receptors in human ovarian follicles and corpora lutea during the menstrual cycle}, author = {Yamoto, M and Nakano, R and Iwasaki, M and Ikoma, H and Furukawa, K}, abstractNote = {The binding of /sup /I-labeled human luteinizing hormone (hLH) to the g fraction of human ovarian follicles and corpora lutea during the entire menstrual.Ovarian mRNA content relative to S16 (see Materials and Methods section for further details) of PRLR long, ERα, ERβ and cyp19A1 aromatase estimated by semi-quantitative RT-PCR in control and HypoT rats during the 2 nd estrous cycle after initiation of PTU results represent the means ± SEM of groups of rats.

* p. Ovulation is the phase in which a mature ovarian follicle ruptures and discharges an ovum (also known as an oocyte, female gamete, or egg). Ovulation also occurs in the estrous cycle of other female mammals, which differs in many fundamental ways from the menstrual cycle.