Luteal phase estrous cycle. Medical search. Frequent questions

It is hypothesized that accumulation of corpora lutea from successive cycles are needed for the adequate amount of progesterone to maintain pregnancy. (vin.com)
Radioimmunoassay (RIA) technique reveals the level of progesterone at 30-70 pg/ml during the follicular phase, and 400-700 pg/ml in luteal phase. (vin.com)
The period in the MENSTRUAL CYCLE that follows OVULATION, characterized by the development of CORPUS LUTEUM, increase in PROGESTERONE production by the OVARY and secretion by the glandular epithelium of the ENDOMETRIUM. (lookformedical.com)
The objectives of this study were to determine the effects of flunixin meglumine (FM), a nonsteroidal anti-inflammatory drug on progtaglandin F2alpha (PGF) secretion, by characterizing plasma prostaglandin metabolites (PGFM), and luteal function by characterizing plasma progesterone (P4) concentrations in lactating Holstein dairy cows during the luteal phase of the estrous cycle. (tamu.edu)
Estrogen and progesterone levels fluctuate naturally for the duration of the primate menstrual cycle plus the rodent estrous cycle. (deubiquitinaseinhibitor.com)
The phase on the estrous cycle can be experimentally determined by measuring serum estradiol and progesterone levels or by evaluating adjustments in vaginal cytology (Becker et al. (deubiquitinaseinhibitor.com)
Progesterone secreted by the corpus luteum (CL) is critical for in-utero embryo survival and development, while CL proteins are key regulatory factors during the luteal phase. (elsevierpure.com)
Intervals between calving and first oestrus, first insemination and conception, the time of first emergence of a dominant follicle, milk progesterone concentration, and the diameter of the corpus luteum (CL) in the first luteal phase did not differ significantly between groups. (europa.eu)
The aim of this study was to determine whether endogenous progesterone regulates synthesis and secretion of luteal oxytocin. (oregonstate.edu)
Low-dose human chorionic gonadotropin versus estradiol/progesterone luteal phase support in gonadotropin-releasing hormone agonist-triggered assisted reproductive technique cycles: understanding a new approach. (druglib.com)
The effect of addition of equine chorionic gonadotropin to a progesterone-based estrous synchronization protocol in buffaloes (Bubalus bubalis) under tropical conditions. (druglib.com)
Ovarian function is best monitored in the dog and cat using a combination of serial vaginal cytology, a measure of estrogen impact on the vaginal epithelium, and serial serum progesterone concentrations, which are a measure of luteal function. (dvm360.com)
Progesterone assay is widely available, and, in general, serum concentrations exceeding 1.0 ng/ml are considered evidence of luteal function in both species. (dvm360.com)

Wallace, JM & McNeilly, AS 1986, ' Changes in FSH and the pulsatile secretion of LH during treatment of ewes with bovine follicular fluid throughout the luteal phase of the oestrous cycle ', Journal of Endocrinology , vol. 111, pp. 317-327. (elsevierpure.com)
These results suggest that FM treatment decreases plasma PGFM and therefore, may inhibit PGF secretion in lactating dairy cows during the luteal phase of the estrous cycle. (tamu.edu)
Although IL1A may stimulate in vitro luteolytic PGF 2α secretion during the estrous cycle, it only acts as a luteotrophic factor in vivo. (elsevierpure.com)

Ovulatory cycle can be defined into 3 phases: follicular, ovulation and luteal. (vin.com)
The luteal phase begins with ovulation and ends with the onset of MENSTRUATION. (lookformedical.com)
Large preovulatory follicles were slower to develop in RS gilts and it was not until late in the follicular phase that RS gilts developed the number of large preovulatory follicles needed to achieve their advantage in ovulation rate. (porkgateway.org)
It is divided into three stages: the follicular phase, ovulation, and the luteal phase. (jackwestin.com)
In contrast, COX-1 showed a twofold higher mRNA expression after ovulation compared with the other estrous cycle phases. (fu-berlin.de)
The interval from calving to first ovulation tended (p=0.10) to be lower and the diameter of the dominant follicle of the oestrous cycle at which cows conceived was greater (p=0.02) in Control than High-N cows. (europa.eu)
A novel method of luteal supplementation with recombinant luteinizing hormone when a gonadotropin-releasing hormone agonist is used instead of human chorionic gonadotropin for ovulation triggering: a randomized prospective proof of concept study. (druglib.com)
1,500 IU human chorionic gonadotropin administered at oocyte retrieval rescues the luteal phase when gonadotropin-releasing hormone agonist is used for ovulation induction: a prospective, randomized, controlled study. (druglib.com)

2018. Dynamics of uterine and ovarian arteries flow velocity waveforms and their relation to follicular and luteal growth and blood flow vascularization during the estrous cycle in Friesian cows. (abanicoacademico.mx)
Ovarian follicular and luteal dynamics were determined using ultrasonography. (europa.eu)

The messenger RNA (mRNA) expression of BMP4 and its receptors was detected in bovine endometrium of both ipsilateral (corpus luteum [CL]-side) and contralateral (non-CL-side) uterine horns during the estrous cycle and early pregnancy. (bvsalud.org)
This study was designed to determine whether the uterine endometrium of cycling cows contains such cells, to identify markers of stemness and ultimately to isolate putative stem/progenitor cell and evaluate their capability to differentiate into mesodermal derivatives. (anid.cl)
We identified expression of embryonic (OCT4 and SOX2, but not NANOG) and mesenchymal (STAT3, CD44 and c-KIT) gene markers in the endometrium of cycling cows and the encoded proteins (Oct4, Sox2 and Cd44) in both stages of the oestrous cycle. (anid.cl)
In this research, we demonstrated the presence of mesenchymal progenitor cell populations of apparently mesenchymal origin in the endometrium of cycling cows, in both the early and late phases of the oestrous cycle. (anid.cl)
Explants of bovine endometrium (days 16-17 of the estrous cycle or early pregnancy) were stimulated with IL1A (10 ng/ml), IFNT (30 ng/ml), or IL1A combined with IFN. (elsevierpure.com)
Variations in L-selectin ligand expression in the luteal-phase endometrium after final oocyte maturation with human chorionic gonadotropin compared with a gonadotropin-releasing hormone agonist. (druglib.com)

Less estrous behavior occurs when cows are eating or contained in holding pens (Stevenson, 2001). (extension.org)
BMP4 protein levels were higher in the endometrial tissues obtained from those cows in early pregnancy than in the estrous cycle. (bvsalud.org)
Uteri from healthy cows in the early (days 1-5) and late luteal phases (days 13-18) of the oestrous cycle were collected. (anid.cl)
These luteotrophic effects may result in appropriate luteal development and function in cows during the estrous cycle and early pregnancy. (elsevierpure.com)
Finally, a supporting study demonstrated that raising concentrations of crude protein (CP) in pasture in spring by the frequent application of urea fertiliser did not affect ovarian follicular dynamics, luteal function, onset of oestrus and reproductive performance of dairy cows under farming conditions. (europa.eu)
A supporting study was available to assess if raising concentrations of crude protein (CP) in pasture in spring by the frequent application of urea fertiliser would affect ovarian follicular dynamics, luteal function, onset of oestrus and reproductive performance of dairy cows under farming conditions in New Zealand (Ordóñez et al. (europa.eu)

The cyclic nature of the capillary bed in the corpus luteum offers a unique experimental model to examine the life cycle of endothelial cells, involving discrete physiologically regulated steps of angiogenesis, blood vessel maturation and blood vessel regression. (biomedcentral.com)
Important insights on the morphology and function of luteal endothelial cells have been gained from a combination of in vitro and in vivo studies on endothelial cells. (biomedcentral.com)
The contributions of vasoactive peptides generated by the luteal endothelin-1 and the renin-angiotensin systems are discussed in context with the function of endothelial cells during corpus luteum formation and regression. (biomedcentral.com)
Manganese containing SOD (Mn-SOD or SOD2) and biliverdin reductase B (BLVRB) were localised in the large and small luteal cells and endothelial cells of CLs over peri-implantation periods. (elsevierpure.com)

The aim of the present study was to investigate the mRNA expression of COX-1 and COX-2 in different regions (ampulla and isthmus) of the bovine oviduct during the estrous cycle. (fu-berlin.de)
Bovine oviducts were collected at the slaughterhouse throughout the estrous cycle and classified into the following four phases: pre-ovulatory, post-ovulatory, early or late luteal phase. (fu-berlin.de)

The rodent estrous cycle lasts 4 days and consists of 4 phases: proestrus, estrus, metestrus (diestrus I), and diestrus (II). (deubiquitinaseinhibitor.com)
The present study was conducted by using 4 female cycling bligon goats (Capra hircus), aged 2-3 years, weighed 27-45 kgs, and clinically healthy and Venous blood sampling was done on days 1 (estrus), 3-4 (early luteal), 10-16 (late luteal), 17-20 (proestrus) using a syringe and collected in tubes containing lithium heparin. (ugm.ac.id)
At a dose of 51.4 mg/kgbw/day, Ginger prolonged the length of estrous cycle with a significant decrease in the duration of diestrous-metestrus (luteal) phase, prolonged proestrus-estrus (ovulatory) phase and reduced the number of cycles as well. (madridge.org)

Ovarian function in ewes after treatment with mifepristone early during the oestrous cycle. (oregonstate.edu)
Ewes were injected s.c. twice a day with vehicle or 10 mg RU486 on days 5-7 of the oestrous cycle (oestrus = day 0). (oregonstate.edu)
In Expt 2, ewes were injected s.c. each day with vehicle or 175 mg RU486 on days 2-5 of the oestrous cycle followed by administration of prostaglandin F(2alpha) on day 6. (oregonstate.edu)
Four of five RU486-treated ewes showed 'split-oestrus' (oestrous behaviour for 36 h and then again at 84-108 h after the onset of initial oestrus). (oregonstate.edu)
The mean masses of mature corpora lutea from control and RU486-treated ewes on day 6 of the oestrous cycle did not differ significantly (394.8 +/- 28.8 versus 319.5 +/- 48.3 mg). (oregonstate.edu)

Occurrence or induction of ESTRUS in all of the females in a group at the same time, applies only to non-primate mammals with ESTROUS CYCLE. (lookformedical.com)

(2, pdf ) investigated whether women's gait (how they walk) changes across the menstrual cycle and how men's attractiveness ratings of women's walk changes accordingly. (femininebeauty.info)
Analysis of the movement of these markers revealed that women in the fertile phase of their menstrual cycle (late follicular phase) could be distinguished, to some extent, from women in the non-fertile phase of the menstrual cycle, but it wasn't clear what exactly the difference was. (femininebeauty.info)
The authors also assessed the walking patterns of women on hormonal birth control and found that it was not distinguishable from the gait of women not on hormonal birth control and during the fertile phase of their menstrual cycle. (femininebeauty.info)
The authors then had male raters judge the attractiveness of the gaits of the women not on hormonal birth control, without telling them what the purpose of the study was or providing information on what phase of the menstrual cycle the women were in. (femininebeauty.info)
In contrast, a previous study had reported that the faces of women were rated more attractive while they were in the fertile phase of their menstrual cycle than when they were in the non-fertile phase. (femininebeauty.info)
The primate menstrual and rodent estrous cycles are closely analogous in spite of the fact that female rodents do not have a functional corpus luteum and consequently do not have a phase analogous to the primate luteal phase (Finn, 2020). (deubiquitinaseinhibitor.com)
The ovarian and menstrual cycles of female reproduction are regulated by hormones produced by the hypothalamus, pituitary, and ovaries. (jackwestin.com)
The female reproductive cycle or menstrual cycle is the physiological change that occurs in fertile women for sexual reproduction and fertilization. (jackwestin.com)
Rising and falling hormone levels result in the progression of the ovarian and menstrual cycles. (jackwestin.com)

Ultrasonography is particularly beneficial for monitoring a mareʼs cycle, ovarian or uterine disease and pregnancy. (westernhorsereview.com)
If you have a craving to better understand what your vet is explaining about your mareʼs cycle and perhaps her subsequent pregnancy, this two-part article will explain how ultrasonography works and why it is beneficial for equine reproduction. (westernhorsereview.com)

Other studies showed that RS gilts maintain elevated concentrations of folliclestimulating hormone (FSH), but not luteinizing hormone (LH), during the late luteal and early follicular phases of the estrous cycle (days 12 to 14). (porkgateway.org)
The elevated concentrations of FSH in RS gilts during the late luteal and early follicular phases may be involved with the maintenance of a larger pool of healthy 5 to 6.9 mm follicles from which preovulatory follicles are selected. (porkgateway.org)
Cholesterol concentrations during the estrous cycle were analyzed by General Linear Model Repeated Measure. (ugm.ac.id)

In an in vivo experiment, saline or IL1A at different doses (0.001-10 μg/per animal) was applied to the uterine lumen on day 16 of the cycle. (elsevierpure.com)

The length of the estrous cycle in dairy cattle is 18 to 24 days, with an average of approximately 21 days. (extension.org)
Ovarian denervation was performed on day 3 of the first studied oestrous cycle and then, on days 7-21 of the cycle, DXM was administered. (akjournals.com)
We therefore characterised protein expression patterns in ovine CLs of pregnancy (days 12, 16 and 20) compared with those of controls, CLs of oestrous cycle (days 12 and 16), using 2DE gel-based proteomics. (elsevierpure.com)
Fresh luteal tissue was collected from young gilts at distinct phases of the estrous cycle: early (Days 4-7), mid (Days 8-12), and late (Days 14-18). (johnshopkins.edu)
The queen is seasonally polyestrus, cycling every four to 30 (14-19 modal) days in the presence of a day length of, or exceeding, 14 hours. (dvm360.com)

Oestrous behaviour and the number, time and outcome of inseminations were also recorded. (europa.eu)

As the nonpregnant cow nears the end of one estrous cycle, the preovulatory follicle (which contains the ovum, or egg) grows larger and produces increasingly more estradiol. (extension.org)

During the luteal phase, secretory cells were more and ciliated cells were less in the epithelium of infundibulum and ampulla. (org.in)
The benefit of human chorionic gonadotropin supplementation throughout the secretory phase of frozen-thawed embryo transfer cycles. (druglib.com)

Changes in both the morphology and the steroidogenic activity of porcine ovaries denervated surgically on day 12 of the oestrous cycle were studied. (akjournals.com)

The study was aimed to assess the status of cholesterol levels during the estrous cycle in goats. (ugm.ac.id)

Positive immunostaining was evident in porcine CL at all stages of the estrous cycle. (johnshopkins.edu)
Quantitative real-time RT-PCR revealed a significant higher expression of COX-2 in the ampulla compared with the isthmus during all stages of the estrous cycle. (fu-berlin.de)

When trying to determine where a mare is at in terms of her cycle or pregnancy, because of the sheer size of the horse, the transducer is placed inside the mareʼs rectum directly overtop of the reproductive tract. (westernhorsereview.com)
The integrated action of hormones controls the male and female sexual development, and reproductive cycle of female including pregnancy, parturition, and lactation. (jackwestin.com)
The luteal phase begins with the formation of the corpus luteum stimulated by FSH and LH and ends in either pregnancy or luteolysis . (jackwestin.com)
Is earlier administration of human chorionic gonadotropin (hCG) associated with the probability of pregnancy in cycles stimulated with recombinant follicle-stimulating hormone and gonadotropin-releasing hormone (GnRH) antagonists? (druglib.com)

The present study was conducted on different segments of oviduct of ten adult Jaffarabadi buffaloes during lutealÂ phase of estrous cycle. (org.in)

Cryopreserved-thawed human embryo transfer: spontaneous natural cycle is superior to human chorionic gonadotropin-induced natural cycle. (druglib.com)

It can be concluded that the plasma level of cholesterol does not change significantly during the estrous cycle. (ugm.ac.id)

Collectively, these studies demonstrate that the rate of endothelial cell proliferation is highest during corpus luteum formation, then decreases and remains low during the mid-luteal phase and structural regression of the corpus luteum. (biomedcentral.com)
The aim of this study was to determine the in vitro effects of peroxisome proliferator-activated receptor-beta/delta (PPARβ/δ) ligands on the transcriptomic profile of the lipopolysaccharide (LPS)-stimulated pig corpus luteum (CL) in the mid-luteal phase of the estrous cycle using RNA-seq technology. (zhihuiya.com)

Immunoactivity was associated primarily with the steroidogenic cells, most consistently with the large luteal cells, and was most intense in regressing tissue (i.e., late). (johnshopkins.edu)

Immunoblotting of protein extracts from luteal tissue revealed three major reactive bands. (johnshopkins.edu)
This represents the first direct in situ evidence that protein modification by lipid peroxidation products occurs during the natural luteal life span. (johnshopkins.edu)

In the course of the reproductive cycle, the vaginal epithelium is subject to normal, cyclic changes, that are influenced by estrogen: with increasing circulating levels of the hormone, there is proliferation of epithelial cells along with an increase in the number of cell layers. (wikipedia.org)
The cells isolated from the late luteal phase were more acquiescent to differentiate into mesodermal derivatives than cells in the early luteal phase. (anid.cl)

These quiescent primordial oocytes are activated, perhaps by certain mechanisms involving the interaction between stimulatory and inhibitory factors, to enter the growth phase. (go.jp)

Cell lines from late luteal phase displayed osteogenic and chondrogenic differentiation potential upon chemical stimulation. (anid.cl)
Evaluation of the pattern of follicular development showed that RS gilts maintain a larger pool of 3 to 6.9 mm follicles than C gilts during the mid to late follicular phase of the estrous cycle. (porkgateway.org)
IL1A also stimulated luteolytic PGF 2α output in the late luteal phase. (elsevierpure.com)

The period in the ESTROUS CYCLE associated with maximum sexual receptivity and fertility in non-primate female mammals. (lookformedical.com)

The estrous cycle of the elephant last 16-19 weeks, based on measurement of urinary bioactive follicle stimulating hormone (FSH) levels. (vin.com)
Follicle-stimulating hormone administered at the time of human chorionic gonadotropin trigger improves oocyte developmental competence in in vitro fertilization cycles: a randomized, double-blind, placebo-controlled trial. (druglib.com)

The pattern of activation and inhibition of these hormones varies between phases of the reproductive cycle. (jackwestin.com)

and 2) determine whether FSH therapy (treatment with FSH-P, a commercially available porcine FSH preparation) during the early to mid follicular phase of the estrous cycle will prevent the loss of medium follicles and reverse the pattern of development and/ or maintenance of fewer medium follicles in C than RS gilts during the mid follicular phase. (porkgateway.org)

Especially the expression pattern of COX-2 suggests that an estrous cycle-dependant and region-specific synthesis of PGs is required for a successful reproduction. (fu-berlin.de)

The isthmus showed less difference in ciliation during different phases of oestrous cycle. (org.in)

Moreover, FM may help to extend luteal function by reducing the rate of P4 decline. (tamu.edu)

Expression of COX-1 and -2 mRNA was detected in all regions of the oviduct during the whole estrous cycle. (fu-berlin.de)

These findings suggest that Ginger can disrupt the estrous cycle and blastocyst implantation without teratogenesis. (madridge.org)

A repeat breeder is defined as a cow that fails to become pregnant after 3 or more consecutive inseminations within the same lactation period without any detectable abnormalities in the genital tract and with apparently normal estrous cycles [1-3]. (kjvr.org)

Access to factual information on anabolic steroids, peptides and other image and performance enhancing drugs, testosterone shut down and post cycle therapy. (tvyoc.org)

2005). Hormonal fluctuations in the course of the estrous cycle have the same pattern in younger female rodents starting puberty as they do in older females. (deubiquitinaseinhibitor.com)

Men tended to rate women's walk during their non-fertile phase more appealing than during their fertile phase. (femininebeauty.info)

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