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Journal articles on the topic 'Mid-Luteal Phase'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Dhali, A., D. P. Mishra, M. Karunakaran, A. Mech та C. Rajkhowa. "Secretion patterns of luteinising hormone, follicle-stimulating hormone and 17β-oestradiol during oestrus and the mid-luteal phase of the oestrous cycle in mithun (Bos frontalis)". Reproduction, Fertility and Development 18, № 6 (2006): 619. http://dx.doi.org/10.1071/rd06005.

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The present study reports the pulsatile secretion of gonadotrophins and 17β-oestradiol (OE2) on the day of oestrus and at the mid-luteal phase of the oestrous cycle in mithun (Bos frontalis). The frequency of luteinising hormone (LH) and follicle-stimulating hormone (FSH) pulses was found to be greater (P < 0.05) on the day of oestrus than at the mid-luteal phase. In contrast, the amplitude of the LH and FSH pulses was greater (P < 0.01) at the mid-luteal phase than on the day of oestrus. A synchronised (P < 0.01) LH and FSH secretion pattern was found only at the mid-luteal phase. A

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Duffy, Diane M., Charles L. Chaffin та Richard L. Stouffer. "Expression of Estrogen Receptor α and β in the Rhesus Monkey Corpus Luteum during the Menstrual Cycle: Regulation by Luteinizing Hormone and Progesterone*". Endocrinology 141, № 5 (2000): 1711–17. http://dx.doi.org/10.1210/endo.141.5.7477.

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Abstract There are conflicting reports on the presence or absence of estrogen receptor (ER) in the primate corpus luteum, and the discovery of a second type of estrogen receptor, ERβ, adds an additional level of complexity. To reevaluate ER expression in the primate luteal tissue, we used semiquantitative RT-PCR based assays and Western blotting to assess ERα and β messenger RNA (mRNA) and protein levels in corpora lutea (n = 3/stage) obtained from adult female rhesus monkeys at early (days 3–5), mid (days 6–8), mid-late (days 10–12), and late (days 14–16) luteal phase of the natural menstrual

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Roberto da Costa, R. P., V. Branco, P. Pessa, J. Robalo Silva, and G. Ferreira-Dias. "Progesterone receptors and proliferating cell nuclear antigen expression in equine luteal tissue." Reproduction, Fertility and Development 17, no. 6 (2005): 659. http://dx.doi.org/10.1071/rd05024.

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Steroid hormones act via specific receptors, and these play an important physiological role in the ovary. The objective of this study was to evaluate the cellular distribution of progesterone receptors and their staining intensity in different equine luteal structures during the breeding season, as well as their relationship to luteal cell composition, cell proliferation pattern and plasma progesterone (P4) concentration. There was an increase in proliferating cell nuclear antigen (PCNA) expression in large luteal cells from the corpus hemorrhagicum (CH) to mid-luteal phase, followed by a decr

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Seki, Katsuyoshi, and Ichiro Nagata. "Effects of a dopamine antagonist (metoclopramide) on the release of LH, FSH, TSH and PRL in normal women throughout the menstrual cycle." Acta Endocrinologica 122, no. 2 (1990): 211–16. http://dx.doi.org/10.1530/acta.0.1220211.

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Abstract To obtain further insight into the role of endogenous dopamine on the adenohypophyseal hormones secretion in normal women, responses of the adenohypophyseal hormones to a dopamine antagonist, metoclopramide, were evaluated in 7 normal women during the early follicular, late follicular and mid-luteal phases of the menstrual cycle. PRL increments following metoclopramide were similar in all phases. During the early and late follicular phases, metoclopramide induced no significant change in circulating LH levels. However, a significant rise in serum LH was observed following metocloprami

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Tsonis, C. G., D. T. Baird, B. K. Campbell, J. A. Downing, and R. J. Scaramuzzi. "SECRETION OF BIOACTIVE INHIBIN BY THE OVARY OF THE BOOROOLA MERINO EWE WITH OR WITHOUT A COPY OF THE FECUNDITY (F) GENE." Journal of Endocrinology 119, no. 1 (1988): R5—R8. http://dx.doi.org/10.1677/joe.0.119r005.

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ABSTRACT The secretion rates of bioactive inhibin, oestradiol and progesterone were measured during the mid-luteal phase and at various times during the follicular phase of the cycle by a sensitive bioassay using sheep pituitary cells in culture in 12 Booroola ewes with and without copies of the Fecundity (F) gene in which the left ovary had been auto-transplanted to the neck. Inhibin secretion was high during the luteal phase and fell in the early follicular phase in all genotypes (P < 0.01). In Booroola ewes with a F/- genotype, inhibin secretion then increased again, towards luteal rates

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Sharma, Gauri, Neha Kumari, Richa H. Rai, Sheetal Kalra, Kashika Bhatia, and Tabassum Saher. "Relationship between Functional Capacity, Fatiguability, Anxiety Level, Static, and Dynamic Balance in Young Adult Females During Follicular and Luteal Phase of Menstrual Cycle." Medical Journal of Dr. D.Y. Patil Vidyapeeth 17, Suppl 2 (2024): S301—S307. http://dx.doi.org/10.4103/mjdrdypu.mjdrdypu_680_23.

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ABSTRACT Introduction: The MC’s phases have been shown to influence various physiological and psychological aspects, yet their potential impact on physical performance and psychological well-being remains less explored. This research study investigates the intricate interplay between functional capacity, fatiguability, anxiety level, and static and dynamic balance in young adult females across the MC’s early follicular and mid-luteal phases. Materials and Methods: A cross-sectional study where 46 healthy eumenorrheic females aged 19–24 years were recruited. Participants underwent various tests

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Khan-Dawood, FS, J. Yang, and MY Dawood. "Hormonal regulation of connexin-43 in baboon corpora lutea." Journal of Endocrinology 157, no. 3 (1998): 405–14. http://dx.doi.org/10.1677/joe.0.1570405.

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The synthesis and secretion of progesterone in the corpus luteum are regulated by both endocrine and paracrine/ autocrine factors which affect the steroidogenic cells. Evidence suggests that these cells communicate via cell-cell junctional proteins, the connexins. Previously we have shown that connexin-43 is expressed in both human and baboon (Papio hamadryus anubis) corpora lutea, with differential expression throughout luteal development, but is not detectable in corpora albicantia. We have examined the effect of human chorionic gonadotropin (hCG), oxytocin, clomiphene citrate and the anti-p

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Greenhalgh, E. A. "Luteal steroidogenesis and regression in the rat: Progesterone secretion and lipid peroxidation induced in luteal cells by human chorionic gonadotrophin, phospholipase A2 and prostaglandin F2α". Journal of Endocrinology 125, № 3 (1990): 397–402. http://dx.doi.org/10.1677/joe.0.1250397.

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ABSTRACT Mid-luteal phase (control) and mid-luteal phase luteal cell suspensions from rats given prostaglandin F2α (PGF2α) to induce luteal regression and killed 24 h later (P24-regressed) were incubated at 37 °C in serum-free medium. Progesterone secretion and lipid peroxidation induced by treatment with human chorionic gonadotrophin (hCG) alone or hCG plus phospholipase A2 and PGF2α were measured. Differences were demonstrated in progesterone secretion and lipid peroxide measurements between control and P24-regressed cell suspensions. The experiments suggested that malondialdehyde formation

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Monaghan, J. C., D. A. Willcocks, M. J. Sinosich, and G. S. Stokes. "Erythrocyte cation fluxes during the menstrual cycle in normal female subjects." Clinical Science 73, no. 2 (1987): 223–26. http://dx.doi.org/10.1042/cs0730223.

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1. Studies of erythrocyte cation transport mechanisms in vitro were performed on eight normotensive, premenopausal female subjects at the mid-points of the follicular and luteal phases of their menstrual cycles. Concurrent plasma concentrations of 17β-oestradiol, progesterone, aldosterone and renin activity were measured. 2. Ouabain-resistant, frusemide-resistant rubidium influx (an index of passive potassium diffusion) was significantly lower in the luteal than the follicular phase. 3. In further studies in four of the eight subjects, the mean rate constant of the rubidium influx measurement

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Naderi, Borna, Lauren Yee, Sonia Shirin, et al. "Ovulatory and anovulatory cycle phase influences on QT interval dynamics during the menstrual cycle." PLOS One 20, no. 5 (2025): e0320846. https://doi.org/10.1371/journal.pone.0320846.

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Background Ovarian hormones affect cardiovascular health yet few sufficient-sized studies with reliable ovulatory documentation have assessed the QTc-hormonal relationship. This study investigated QTc changes across ovulatory and anovulatory menstrual cycle phases. Methods This prospective cohort investigation, a cardiac sub-study of the Menstruation and Ovulation Study 2 (MOS2), involved 62 healthy, regularly menstruating community-dwelling women during spontaneous menstrual cycles. Electrocardiographic recordings were obtained within-woman during different cycle phases: mid-follicular for al

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Hromatko, Ivana, and Una Mikac. "A Mid-Cycle Rise in Positive and Drop in Negative Moods among Healthy Young Women: A Pilot Study." Brain Sciences 13, no. 1 (2023): 105. http://dx.doi.org/10.3390/brainsci13010105.

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Clinically oriented studies of mood as a function of the menstrual cycle mainly address the negative moods in the premenstrual phase of the cycle. However, a periovulatory increase in positive emotions and motivations related to reproduction has also been noted. Thus, it has been suggested that the drop in mood during the luteal phase of the menstrual cycle might be a byproduct of elevated positive moods occurring mid-cycle. The aim of this prospective study was to compare both the positive and negative dimensions of mood across the menstrual cycle. A group of 60 healthy, normally cycling wome

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Aguilar, J., H. M. Fraser, H. Wilson, E. Clutton, D. J. Shaw, and E. D. Watson. "Temporal relationship between proliferating and apoptotic hormone-producing and endothelial cells in the equine corpus luteum." Reproduction 132, no. 1 (2006): 111–18. http://dx.doi.org/10.1530/rep.1.01051.

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The temporal relationship between endothelial cell death, vascular regression and the death of hormone-producing cells in the mare has not been established. To determine the dynamics of cell proliferation and death throughout the luteal phase, corpora lutea were studied at the early, mid- and late luteal phase, and after treatment with cloprostenol in the mid-luteal phase to induce premature luteolysis. Changes in cell proliferation and apoptosis were investigated utilising specific markers (phosphorylated histone-3 and activated caspase-3 respectively). Histone-3 positive cells were most abun

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Meers, Jessica, Joanne Bower, Sara Nowakowski, and Candice Alfano. "0737 Age, menstrual phase, and circadian preference impact sleep in menstruating individuals." SLEEP 46, Supplement_1 (2023): A324—A325. http://dx.doi.org/10.1093/sleep/zsad077.0737.

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Abstract Introduction An eveningness chronotype is generally associated with reduced sleep continuity and quality, as well as social jetlag. Changes in hormones and menstrual phase similarly impact sleep, although research on the chronobiological effects of these changes are equivocal. This study aimed to examine the role of menstrual cycle in daily self-report and actigraphy-assessed sleep in two consecutive menstrual cycles. Methods Participants (n=51; 43% Caucasian), 18-35 years (23.67±4.68) completed actigraphy and daily sleep diaries over two menstrual cycles (m days=51.29). Four menstrua

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SYMONDS, C. S., P. GALLAGHER, J. M. THOMPSON, and A. H. YOUNG. "Effects of the menstrual cycle on mood, neurocognitive and neuroendocrine function in healthy premenopausal women." Psychological Medicine 34, no. 1 (2004): 93–102. http://dx.doi.org/10.1017/s0033291703008535.

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Background. Neurocognitive functioning may be impaired in the luteal phase of the menstrual cycle due to associated changes in hypothalamic–pituitary–adrenal (HPA) axis function. This study examines the relationship between changes in neurocognition and HPA axis function in different phases of the menstrual cycle.Method. Fifteen female volunteers, free from psychiatric history and hormonal medication were tested twice, during mid-follicular and late-luteal phases in a randomized, crossover design. Mood, neurocognitive function, and basal cortisol and dehydroepiandrosterone (DHEA) were profiled

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Haneda, Mayumi, Yuki Hashimoto, Airi Mishima, Daichi Saito, and Takeshi Yoshitomi. "Changes in choroidal circulation hemodynamics during the menstrual cycle in young, healthy women." PLOS ONE 17, no. 6 (2022): e0270501. http://dx.doi.org/10.1371/journal.pone.0270501.

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Purpose The current study aimed to investigate the time course of changes in choroidal circulation hemodynamics and their relationship to systemic circulation dynamics during the normal menstrual cycle in young, healthy women using laser speckle flowgraphy (LSFG). Methods This prospective study included 26 eyes from 13 young, healthy women (21.3 ± 4.0 years) with a normal menstrual cycle and 24 eyes from 12 young, healthy men (21.8 ± 4.4 years) as a control group. The macular mean blur rate (MBR), a quantitative index of relative blood flow velocity in the choroid, was measured using LSFG. MBR

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Mirzaei Khalil Abadi, Maryam, Mohammad Hemmatinafar, and Maryam Koushkie Jahromi. "Effects of menstrual cycle on cognitive function, cortisol, and metabolism after a single session of aerobic exercise." PLOS ONE 19, no. 10 (2024): e0311979. http://dx.doi.org/10.1371/journal.pone.0311979.

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Aim This study aimed to investigate the effects of the two pre-ovulatory and mid-luteal phases of the menstrual cycle on cognitive function, as well as possible mediators of metabolism and salivary cortisol, at rest and after an aerobic exercise session. Study design Twelve active young unmarried women aged 22–30 years volunteered to participate in the study. The participants performed a 20-min exercise session on a cycle ergometer at 60–70% of their reserve heart rate twice, during the follicular (pre-ovulation: days 7–10) and luteal (mid-luteal: days 21–24) phases of the menstrual cycle. Sal

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Mascaro, L., J. Leota, S. Sammak, S. Rajaratnam, S. Drummond, and E. Facer-Childs. "O007 Menstrual cycle phase classification methods and the relationship with sleep, mood, and performance in elite female athletes." Sleep Advances 5, Supplement_1 (2024): A4. https://doi.org/10.1093/sleepadvances/zpae070.007.

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Abstract Introduction Female athletes are often excluded from sports-science research due to hormonal variations across the menstrual cycle. Effects of menstrual cycle phase on outcomes are inconclusive likely due to between-study variation in phase classification. We aimed to test if the relationship between menstrual cycle phase and sleep, mood, and performance differed depending on whether a continuous, 2-phase, 3-phase, or 4-phase approach was used to classify cycle phase. Methods Elite Australian Rules footballers reporting a regular menstrual cycle and not on contraception (N=18, M-age=2

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Fraser, H. M., S. F. Lunn, G. M. Cowen, and P. J. Illingworth. "Induced luteal regression in the primate: evidence for apoptosis and changes in c-myc protein." Journal of Endocrinology 147, no. 1 (1995): 131–37. http://dx.doi.org/10.1677/joe.0.1470131.

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Abstract There is increasing molecular evidence that apoptosis is involved in the process of structural luteal regression in non-primate species. Apoptosis is dependent upon the activation of certain proto-oncogenes and c-myc protein has an important regulatory role in this process in some cell types. The aim of the present study was to determine the occurrence and localisation of c-myc protein within the primate corpus luteum, determine changes during induction of luteal regression and examine the corpora lutea for morphological evidence of apoptosis. Ovaries were studied from marmoset monkey

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Griskova-Bulanova, Inga, Ramune Griksiene, Milena Korostenskaja, and Osvaldas Ruksenas. "40 Hz auditory steady-state response in females: When is it better to entrain?" Acta Neurobiologiae Experimentalis 74, no. 1 (2014): 91–97. http://dx.doi.org/10.55782/ane-2014-1975.

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Auditory steady-state responses (ASSRs) are widely applied to test brain’s ability to follow external stimulation in neuropsychiatric disorders. It is known that ASSRs are related to GABAergic transmission. Female sex steroid homones – both estrogens and progesterone – affect functioning of GABAergic system. However, it is not known how these hormones affect brain’s ability to entrain. This study was designed to test the ability to synchronize to 40 Hz stimulation during different phases of the menstrual cycle. Twenty-eight healthy females participated in the research during one of the menstru

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Dickson, SE, R. Bicknell, and HM Fraser. "Mid-luteal angiogenesis and function in the primate is dependent on vascular endothelial growth factor." Journal of Endocrinology 168, no. 3 (2001): 409–16. http://dx.doi.org/10.1677/joe.0.1680409.

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Vascular endothelial growth factor (VEGF) is essential for the angiogenesis required for the formation of the corpus luteum; however, its role in ongoing luteal angiogenesis and in the maintenance of the established vascular network is unknown. The aim of this study was to determine whether VEGF inhibition could intervene in ongoing luteal angiogenesis using immunoneutralisation of VEGF starting in the mid-luteal phase. In addition, the effects on endothelial cell survival and the recruitment of periendothelial support cells were examined. Treatment with a monoclonal antibody to VEGF, or mouse

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Endo, T., H. Watanabe, H. Yamamoto, S. Tanaka та M. Hashimoto. "Prostaglandin F2α- and phorbol 12-myristate-13-acetate-stimulated progesterone production by cultured human luteal cells in the mid-luteal phase: prostaglandin F2α increases cytosolic Ca2+ and inositol phosphates". Journal of Endocrinology 133, № 3 (1992): 451–58. http://dx.doi.org/10.1677/joe.0.1330451.

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ABSTRACT While prostaglandin F2α (PGF2α) has been thought to be a natural luteolysin in non-primates, a luteolytic effect in the human corpus luteum is less evident. We therefore investigated the action of PGF2α on monolayer cultures of human luteal cells obtained from mid-luteal phase corpora lutea. PGF2α increased basal and human chorionic gonadotrophin (hCG)-stimulated progesterone production by human cultured luteal cells. A potent tumour-promoting phorbol ester, phorbol 12-myristate-13-acetate (PMA), also stimulated progesterone production by cultured human luteal cells. Although human lu

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Fraser, H. M., M. Abbott, N. C. Laird, A. S. McNeilly, J. J. Nestor, and B. H. Vickery. "Effects of an LH-releasing hormone antagonist on the secretion of LH, FSH, prolactin and ovarian steroids at different stages of the luteal phase in the stumptailed macaque (Macaca arctoides)." Journal of Endocrinology 111, no. 1 (1986): 83–90. http://dx.doi.org/10.1677/joe.0.1110083.

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ABSTRACT The role of the pituitary gonadotrophins in controlling luteal function in the stumptailed macaque has been investigated by examining profiles of serum concentrations of LH, FSH, progesterone and oestradiol in daily blood samples from 13 monkeys during the menstrual cycle, and in blood samples taken at hourly intervals between 09.00 and 21.00 h on different days of the luteal phase in 13 cycles. The effects of acute withdrawal of gonadotrophins was investigated by administering a single injection of 300 μg LHRH antagonist/kg body weight at different stages of the luteal phase during 2

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Bramley, T. A., D. Stirling, I. A. Swanston, G. S. Menzies, A. S. McNeilly, and D. T. Baird. "Specific binding sites for gonadotrophin-releasing hormone, LH/chorionic gonadotrophin, low-density lipoprotein, prolactin and FSH in homogenates of human corpus luteum. II: Concentrations throughout the luteal phase of the menstrual cycle and early pregnancy." Journal of Endocrinology 113, no. 2 (1987): 317–27. http://dx.doi.org/10.1677/joe.0.1130317.

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ABSTRACT Corpora lutea were obtained from 52 women undergoing laparotomy during the luteal phase of the menstrual cycle. In addition, stromal, thecal and granulosa cell preparations were obtained from seven women undergoing ovariectomy during the late follicular–preovulatory phase of the cycle. The specific binding of a 125I-labelled gonadotrophin-releasing hormone (GnRH) agonist [d-Ser(But)6] GnRH(1–9)-ethylamide (buserelin) and of human chorionic gonadotrophin (hCG), human FSH (hFSH), human prolactin (hPRL) and human low-density lipoprotein (hLDL) to tissue homogenates was measured under opt

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Fraser, Hamish M., Helen Wilson, Christine Wulff, John S. Rudge, and Stanley J. Wiegand. "Administration of vascular endothelial growth factor Trap during the ‘post-angiogenic’ period of the luteal phase causes rapid functional luteolysis and selective endothelial cell death in the marmoset." Reproduction 132, no. 4 (2006): 589–600. http://dx.doi.org/10.1530/rep.1.01064.

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The intense angiogenesis characteristic of early corpus luteum development is dependent upon vascular endothelial growth factor (VEGF) as inhibitors of VEGF administered at the peri-ovulatory period suppress endothelial cell proliferation and progesterone secretion. We now report that administration of VEGF Trap, a soluble decoy receptor-based inhibitor, at the mid- or the late luteal phase in the marmoset results in a rapid decline in plasma progesterone. Since vascularisation of the corpus luteum is largely complete by the mid-luteal phase, it suggested that this functional luteolysis involv

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Li, Danyang, Lepu Zhang, and Xiaochun Wang. "The Effect of Menstrual Cycle Phases on Approach–Avoidance Behaviors in Women: Evidence from Conscious and Unconscious Processes." Brain Sciences 12, no. 10 (2022): 1417. http://dx.doi.org/10.3390/brainsci12101417.

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The menstrual cycle affects women’s emotional states, with estrogen and progesterone having predominant roles. However, it remains unclear whether the phases of the menstrual cycle also affect women’s motivational behaviors. In this study, the main aim was to investigate how the menstrual cycle influences approach–avoidance behavior under conditions of conscious versus unconscious processing of emotions. Briefly, after recruitment by advertisement and screening with a menstrual cycle survey questionnaire, 27 naturally cycling, healthy women participated in an improved “manikin task” and were p

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Thulasiraman, Sarath, Thangamani Annadurai, Rajkumar Ramasamy, Reshma Abdul та Sakthivel Manokaran. "Characterization of Luteal Response to PGF2α Treatment During Mid-luteal Phase in Graded Murrah Buffaloes". Indian Journal of Animal Reproduction 46, № 1 (2025): 30–32. https://doi.org/10.48165/ijar.2025.46.01.5.

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The present study was conducted with the objective to evaluate the functional and structural regression of corpus luteum following administration of PGF2 α during mid-luteal phase of estrous cycle in graded Murrah buffaloes. Healthy, plu riparous lactating and cyclic graded Murrah buffaloes (n=7; 6-8 years) were administered with PGF2 alpha (Cloprostenol sodium, 500µg) intramuscularly during mid-luteal phase of estrous cycle and recorded luteolysis (functional, structural regression) and corresponding follicular growth periodically from time of administration (0, 6, 12, 24, 48hr and 72 hr). Re

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Romero-Parra, Nuria, Laura Barba-Moreno, Beatriz Rael, et al. "Influence of the Menstrual Cycle on Blood Markers of Muscle Damage and Inflammation Following Eccentric Exercise." International Journal of Environmental Research and Public Health 17, no. 5 (2020): 1618. http://dx.doi.org/10.3390/ijerph17051618.

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The aim of this study was to evaluate whether the menstrual cycle and its underlying hormonal fluctuations affect muscle damage and inflammation in well-trained females following an eccentric exercise. Nineteen eumenorrheic women performed an eccentric squat-based exercise in the early follicular phase, late follicular phase and mid-luteal phase of their menstrual cycle. Sex hormones and blood markers of muscle damage and inflammation –creatine kinase, myoglobin, lactate dehydrogenase, interleukin-6, tumoral necrosis factor-α, and C reactive protein– were analyzed in each phase. No effect of m

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Ganeva, Rumiana, Dimitar Parvanov, Maria Handzhiyska, et al. "IMMUNE CELLS IN THE ENDOMETRIUM DURING MID-LUTEAL PHASE." Fertility and Sterility 116, no. 3 (2021): e113. http://dx.doi.org/10.1016/j.fertnstert.2021.07.315.

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Ances, BM, and JA Detre. "Perfusion Changes with Photic Stimulation During two Phases of the Menstrual Cycle: A Pilot Study Comparing Controls and True Menstrual Migraine Patients." Cephalalgia 23, no. 9 (2003): 907–13. http://dx.doi.org/10.1046/j.1468-2982.2003.00625.x.

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This pilot study investigated the effect of menstrual cycle phase (late luteal and mid-follicular) on cerebral perfusion changes during photic stimulation in both controls ( n = 5) and true menstrual migraine patients ( n = 5). No significant differences in resting baseline perfusion were observed between the two groups during either phase of the menstrual cycle. During the late luteal phase, changes in perfusion within the occipital lobe due to photic stimulation were similar for both groups. However, during the mid-follicular phase, occipital perfusion during visual stimulation decreased for

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Boiti, C., D. Zampini, G. Guelfi, F. Paolocci, M. Zerani, and A. Gobbetti. "Expression patterns of endothelial and inducible nitric oxide synthase isoforms in corpora lutea of pseudopregnant rabbits at different luteal stages." Journal of Endocrinology 173, no. 2 (2002): 285–96. http://dx.doi.org/10.1677/joe.0.1730285.

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Total activity of nitric oxide (NO) synthase (NOS) and expression of both endothelial (eNOS) and inducible (iNOS) isoforms were examined in corpora lutea (CL) of rabbits across pseudopregnancy by quantitative RT-PCR analysis, Western blot and immunohistochemistry. CL were collected at early- (day 4), mid- (day 9) and late- (day 13) luteal phases of pseudopregnancy. The PCR product of rabbit luteal eNOS was cloned and its direct sequence exhibited 90% homology with those of other species. The steady-state mRNA levels encoding eNOS remained fairly constant throughout both early- and mid-luteal s

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Fraser, H. M., and C. G. Tsonis. "Manipulation of inhibin during the luteal-follicular phase transition of the primate menstrual cycle fails to affect FSH secretion." Journal of Endocrinology 142, no. 1 (1994): 181–86. http://dx.doi.org/10.1677/joe.0.1420181.

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Abstract The pattern of inhibin concentrations in blood during the menstrual cycle in primates has suggested an endocrine role of inhibin in the negative feedback control of FSH secretion during the luteal phase. Conversely, the fall in inhibin during the late luteal phase may play a role in the rise in serum FSH during the luteal-follicular phase transition. This hypothesis was examined by determining the effects of manipulation of inhibin on FSH secretion in stumptailed macaques. During the mid-luteal phase the putative inhibin feedback was inhibited by i.v. administration of 20 ml of ovine

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Alzueta, Elisabet, Massimiliano de Zambotti, Teji Dulai, et al. "259 Tracking naturalistic sleep over the menstrual cycle with a wearable in healthy young women." Sleep 44, Supplement_2 (2021): A104. http://dx.doi.org/10.1093/sleep/zsab072.258.

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Abstract Introduction A woman’s menstrual cycle is characterized by hormonal changes that might affect sleep and therefore daily functionality. While some studies using self-reports have shown a lower sleep quality in the peri-menstruation phase, objective – in lab – studies have not found significant differences in sleep continuity during the menstrual cycle, but are limited by only a few recordings across the cycle. The aim of this study is to examine changes in sleep during the healthy menstrual cycle using a multi-sensory wearable, allowing continuous, objective, reliable and ecologically

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GHOSH, JYOTIRMOY, SUDHIR C. ROY, and R. UMAYA SUGANTHI. "Changes in phosphatases activities in uterine secretion during estrous cycle:A possible indicator of important biochemical changes in buffaloes uterine microenvironment." Indian Journal of Animal Sciences 82, no. 12 (2012): 1499–503. http://dx.doi.org/10.56093/ijans.v82i12.25664.

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Defining biochemical nature of uterine secretion has been the focus of recent research interest due to conception failure after embryo transfer and normal pregnancy in ruminants including buffaloes. Proteins are important as biomolecules for cell function, and phosphatases control the protein function. Therefore identification of changes on secretory proteins and phosphatases activities during early luteal, mid luteal, late luteal and follicular stages of estrous cycle in buffaloes is attempted. The luteal stages uterine secretion contained significantly more protein as compared to the follicu

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Roberto da Costa, R. P., P. M. Serrão, S. Monteiro, P. Pessa, J. Robalo Silva, and G. Ferreira-Dias. "Caspase-3-mediated apoptosis and cell proliferation in the equine endometrium during the oestrous cycle." Reproduction, Fertility and Development 19, no. 8 (2007): 925. http://dx.doi.org/10.1071/rd06159.

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Cell proliferation and apoptosis are hormone-dependent physiological processes involved in endometrial growth and regression. The aims of the present study were: (1) to evaluate endometrial cell proliferation using proliferating cell nuclear antigen (PCNA) expression; (2) to evaluate the induction of endometrial cell death by the expression of active caspase-3 and the apoptotic phenotype visualised by DNA fragmentation; and (3) to relate these observations to endometrial tissue dynamics in the equine endometrium throughout the oestrous cycle. Endometria were assigned to follicular and luteal p

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Köse, Bereket. "Analysis of the Effect of Menstrual Cycle Phases on Aerobic-Anaerobic Capacity and Muscle Strength." Journal of Education and Training Studies 6, no. 8 (2018): 23. http://dx.doi.org/10.11114/jets.v6i8.3207.

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The objective of this study is to examine the effect of menstrual cycle phases on aerobic-anaerobic capacity and muscle strength. 10 female kickboxing athletes with an average age of 21.40±2.01 years; average height of 169.60±6.14 cm; average weight of 63.90±5.76 kg and average training age of 7.41±2.10 participated in the study. On the first day, maximal strength (1RM), strength endurance, wingate anaerobic power and capacity test (WAnT) were conducted and aerobic measurements were taken the next day. The measurements were conducted in follicular phase on the days 2-3rd of menstrual bleeding,

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Kim, Soon Ok, Nune Markosyan, Gerald J. Pepe та Diane M. Duffy. "Estrogen promotes luteolysis by redistributing prostaglandin F2α receptors within primate luteal cells". REPRODUCTION 149, № 5 (2015): 453–64. http://dx.doi.org/10.1530/rep-14-0412.

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Prostaglandin F2α (PGF2α) has been proposed as a functional luteolysin in primates. However, administration of PGF2α or prostaglandin synthesis inhibitors in vivo both initiate luteolysis. These contradictory findings may reflect changes in PGF2α receptors (PTGFRs) or responsiveness to PGF2α at a critical point during the life span of the corpus luteum. The current study addressed this question using ovarian cells and tissues from female cynomolgus monkeys and luteinizing granulosa cells from healthy women undergoing follicle aspiration. PTGFRs were present in the cytoplasm of monkey granulosa

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Amaral, Ana, Carina Fernandes, Maria Rosa Rebordão, et al. "Myeloperoxidase Inhibition Decreases the Expression of Collagen and Metallopeptidase in Mare Endometria under In Vitro Conditions." Animals 11, no. 1 (2021): 208. http://dx.doi.org/10.3390/ani11010208.

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Neutrophils can originate neutrophil extracellular traps (NETs). Myeloperoxidase (MPO) is a peroxidase found in NETs associated to equine endometrosis and can be inhibited by 4-aminobenzoic acid hydrazide (ABAH). Metallopeptidases (MMPs) participate in extracellular matrix stability and fibrosis development. The objectives of this in vitro work were to investigate, in explants of mare’s endometrium, (i) the ABAH capacity to inhibit MPO-induced collagen type I (COL1) expression; and (ii) the action of MPO and ABAH on the expression and gelatinolytic activity of MMP-2/-9. Explants retrieved from

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Suzuki, T., H. Sasano, H. Sasaki, T. Fukaya, and H. Nagura. "Quantitation of P450 aromatase immunoreactivity in human ovary during the menstrual cycle: relationship between the enzyme activity and immunointensity." Journal of Histochemistry & Cytochemistry 42, no. 12 (1994): 1565–73. http://dx.doi.org/10.1177/42.12.7983357.

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To understand changes associated with the menstrual cycle in the human ovary, it is very important to examine chronological changes in P450 aromatase (P450arom) enzymatic activity in the normal cycling ovary. Therefore, we initially examined the correlation between intensity of P450arom immunoreactivity and its biochemical enzymatic activity in five estrogen-producing human cancer cell lines (HHUA, Ishikawa, HEC-59, OMC-2, and MCF-7). P450arom immunointensity per cell was evaluated by the CAS 200 computed image analysis system, and its catalytic activity per 10(6) culture cells was analyzed by

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Bramley, T. A., and G. S. Menzies. "Receptors for lactogenic hormones in the porcine corpus luteum: properties and luteal phase concentrations." Journal of Endocrinology 113, no. 3 (1987): 355–64. http://dx.doi.org/10.1677/joe.0.1130355.

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ABSTRACT Homogenates of pig corpora lutea contained specific, high-affinity receptors for ovine prolactin (oPRL) and human GH (hGH). Specific hormone binding was enhanced by divalent metal ions, but only when included in the binding reaction. Divalent metal ions did not act by increasing the recovery of bound hormone by low-speed centrifugation, but appeared to promote the formation of a more stable hormone– receptor complex. Both oPRL and hGH tracers were bound in similar amounts and with similar affinities by pig luteal homogenates and the concentrations of either unlabelled hormone required

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Whitelaw, Christine Margaret, Jane Elizabeth Robinson, Peter Mark Hastie, Vasantha Padmanabhan, and Neil Price Evans. "Effects of cycle stage on regionalised galanin, galanin receptors 1–3, GNRH and GNRH receptor mRNA expression in the ovine hypothalamus." Journal of Endocrinology 212, no. 3 (2011): 353–61. http://dx.doi.org/10.1530/joe-11-0352.

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The neurotransmitter galanin has been implicated in the steroidogenic regulation of reproduction based on work mainly conducted in rodents. This study investigated the temporal changes in the expression of galanin and its three receptor isoforms andGNRHandGNRHRmRNA in specific hypothalamic nuclei known to be involved in the regulation of reproductive cyclicity, namely the medial pre-optic area (mPOA), the rostral mPOA/organum vasculosum of the lamina terminalis, the paraventricular nucleus and the arcuate nucleus using an ovine model. Following synchronisation of their oestrous cycles, tissues

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Hinney, Bernd, Christina Henze, and Wolfgang Wuttke. "Regulation of luteal function by luteinizing hormone and prolactin at different times of the luteal phase." European Journal of Endocrinology 133, no. 6 (1995): 701–17. http://dx.doi.org/10.1530/eje.0.1330701.

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Hinney B, Henze C, Wuttke W. Regulation of luteal function by luteinizing hormone and prolactin at different times of the luteal phase. Eur J Endocrinol 1995;133:701–17. ISSN 0804–4643 In 54 healthy women luteal function was assessed by sequential withdrawals of blood samples at 10-min intervals for 8–10 h. Subgroups of the women were studied during the early and late ovulatory period and during the early, mid- and late luteal phase. Bio- and immunoreactive luteinizing hormone (LH), prolactin, testosterone, estradiol and progesterone levels were determined in each sample. While the bio- and im

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Beckers, Nicole G. M., Peter Platteau, Marinus J. Eijkemans, et al. "The early luteal phase administration of estrogen and progesterone does not induce premature luteolysis in normo-ovulatory women." European Journal of Endocrinology 155, no. 2 (2006): 355–63. http://dx.doi.org/10.1530/eje.1.02199.

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Objective: The luteal phase after ovarian hyperstimulation for in vitro fertilization (IVF) is insufficient. Therefore, luteal phase supplementation is routinely applied in IVF. It may be postulated that premature luteolysis after ovarian hyperstimulation is due to supraphysiological steroid levels in the early luteal phase. In the present study, high doses of steroids are administered after the LH surge in normo-ovulatory volunteers in order to investigate whether this intervention gives rise to endocrine changes and a shortening of the luteal phase. Design: Randomized controlled trial. Metho

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Kowalewski, Mariusz P., Barbara Fox, Aykut Gram, Alois Boos, and Iris Reichler. "Prostaglandin E2 functions as a luteotrophic factor in the dog." REPRODUCTION 145, no. 3 (2013): 213–26. http://dx.doi.org/10.1530/rep-12-0419.

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The luteal phase in dogs is governed by many poorly understood regulatory mechanisms. Functioning of the corpus luteum (CL) is unaffected by hysterectomy. Recently, the role of prostaglandins in regulating canine CL function was addressed suggesting a luteotrophic effect of prostaglandin E2 (PGE2) during the early luteal phase. However, compelling functional evidence was lacking. The potential of PGE2 to stimulate steroidogenesis was tested in canine primary luteal cells isolated from developing CL of non-pregnant dogs. In addition, the luteal expression of prostaglandin transporter (PGT) and

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Lee, Li-Hsuan, and Chao Chin Hsu. "#129 : The Ratio of Luteal Phase Serum Progesterone and Estradiol Can be Used to Predict Pregnancy in Frozen Embryo Transfer Cycles." Fertility & Reproduction 05, no. 04 (2023): 712–13. http://dx.doi.org/10.1142/s2661318223744223.

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Background and Aims: Low serum progesterone (P) levels on day of embryo transfer (ET) and luteal phase have been associated with poorer pregnancy outcome. This study aimed to know if serum estradiol (E2) and P levels during mid and late luteal phase are related with ongoing pregnancy. Method: The serum E2 and P levels from mid luteal phase (5 days after ET) to the day of the [Formula: see text]-hCG check (11 days after ET) in both fresh and frozen embryo transfer (FET) cycles was investigated between January 2019 and December 2021. Eligible patients were reproductive aged women with a normal u

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Schmalenberger, Katja M., Tory A. Eisenlohr-Moul, Lena Würth, et al. "A Systematic Review and Meta-Analysis of Within-Person Changes in Cardiac Vagal Activity across the Menstrual Cycle: Implications for Female Health and Future Studies." Journal of Clinical Medicine 8, no. 11 (2019): 1946. http://dx.doi.org/10.3390/jcm8111946.

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Interest in cardiac vagal activity (CVA; e.g., parasympathetically-mediated heart rate variability) as a biomarker of physical and mental health has increased exponentially in recent years. However, the understanding of sources of within-person change (i.e., intra-individual variance) in CVA is lagging behind. This systematic review and meta-analysis summarizes and quantifies current empirical evidence of within-person changes in measures of CVA across the menstrual cycle in naturally-cycling premenopausal females. We conducted an extensive literature search following the Preferred Reporting I

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Kwissa, Malgorzata, Tomasz Krauze, Agnieszka Mitkowska-Redman, et al. "Cardiovascular Function in Different Phases of the Menstrual Cycle in Healthy Women of Reproductive Age." Journal of Clinical Medicine 11, no. 19 (2022): 5861. http://dx.doi.org/10.3390/jcm11195861.

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Background: Sex hormones influence the cardiovascular (CV) function in women. However, it is uncertain whether their physiological variation related to the regular menstrual cycle affects the CV system. We studied changes in the hemodynamic profile and body’s water content and their relation to sex hormone concentration in healthy women during the menstrual cycle. Material and methods: Forty-five adult women were examined during the early follicular, late follicular, and mid-luteal phases of the same menstrual cycle. The hemodynamic profile was estimated non-invasively by cardiac impedance whi

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Hayashida, Harumi, Nicola J. Dolan, Charlotte Hounsome, Nawal Alajmi, and Nicolette C. Bishop. "Salivary SIgA responses to acute moderate–vigorous exercise in monophasic oral contraceptive users." Applied Physiology, Nutrition, and Metabolism 40, no. 9 (2015): 863–67. http://dx.doi.org/10.1139/apnm-2014-0468.

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The purpose of this study was to examine the effect of oral contraceptive (OC) use on salivary secretory immunoglobulin A (SIgA) levels at rest and in response to an acute bout of moderate–vigorous exercise during 2 phases of the 4-week OC cycle corresponding to different phases of the synthetic menstrual cycle. Ten healthy active females completed a cycling at 70% peak oxygen uptake for 45 min at 2 time points of an OC cycle: during the equivalent in time to the mid-follicular phase (day 8 ± 2) and the mid-luteal phase (day 20 ± 2). Timed unstimulated saliva samples were obtained before, imme

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Fisch, B., R. A. Margara, R. M. L. Winston, and S. G. Hillier. "Cellular basis of luteal steroidogenesis in the human ovary." Journal of Endocrinology 122, no. 1 (1989): 303—NP. http://dx.doi.org/10.1677/joe.0.1220303.

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ABSTRACT A primary monolayer cell culture system was developed to investigate human corpus luteum (CL) function in vitro. Steroidogenic cells were isolated by collagenase dispersal and Percoll density-gradient fractionation from CLs enucleated at progressive stages of the luteal phase (tubal surgery patients). 'Pure' granulosa-lutein cells were aspirated from ovulatory follicles at mid-cycle (in-vitro fertilization patients). The steroidogenic capacity (progesterone/20α-dihydroprogesterone biosynthesis and aromatase activity) of isolated luteal cells was assessed in relation to CL development.

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Challawar, Rutuja, Aparna Menon, Manisha Kar, and Sushil Chandra Mahapatra. "Effect of acute bout of moderate exercise on P300 component of event-related potential in young women during different phases of menstrual cycle: A pilot study." Indian Journal of Physiology and Pharmacology 64 (February 27, 2021): 272–78. http://dx.doi.org/10.25259/ijpp_78_2020.

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Objectives: Ovarian hormones not only regulate reproductive functions but also are implicated in emotional and cognitive processing. But, menstrual cycle studies do not provide convincing evidences. However, evidence supports a link between estrogen depletion and risk for Alzheimer’s disease. Physical exercise has shown to improve a person’s attentiveness and cognitive skills. Since both exercise and ovarian hormones may affect cognition, the present study intends to determine the effect of acute bout of moderate exercise on cognitive processing in young women in early proliferative phase and

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Liebermann, J., D. Schams, and A. Miyamoto. "Effects of local growth factors on the secretory function of bovine corpus luteum during the oestrous cycle and pregnancy in vitro." Reproduction, Fertility and Development 8, no. 6 (1996): 1003. http://dx.doi.org/10.1071/rd9961003.

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The impact of insulin-like growth factor-I (IGF-I) basic fibroblast growth factor (bFGF), endothelin-1 (ET-1), tumour necrosis factor-alpha (TNF-alpha), transforming growth factor-alpha (TGF-alpha) and platelet-derived growth factor (PDGF) on the release of progesterone (P4) and oxytocin (OT) from individual bovine corpora lutea at different stages of the oestrous cycle and pregnancy was evaluated with a microdialysis system (MDS) in vitro. IGF-I (1 microgram mL-1) induced significantly the acute effects on P4 release at the late luteal stage (Days 15-18) and early pregnancy (Days 60-120), whe

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