luteinizing hormone
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2022 ◽  
Vol 12 (1) ◽  
pp. 78-86
Njoku CM ◽  
Meludu SC ◽  
Dioka CE

There is a traditional believe that if premenopausal women engage in prolonged physical exercise, they are likely to have infertility. This study assessed the effect of prolonged moderate – vigorous exercise on ovarian reserve and ovulatory status in premenopausal students of Nnamdi Azikiwe University, Nnewi Campus. The objectives were to determine the effect of moderate – vigorous intensity exercise on Anti-Mullerian hormone (AMH), day 3 Follicle stimulating hormone (FSH), Luteinizing Hormone (LH), day 3 Estrogen, day 21 Estrogen, and day 21 Progesterone levels in premenopausal women. This was a prospective comparative study involving 80 participants aged between 19 and 25 years, randomly selected and assigned to exercise group and control group. The exercise group comprised 40 participants who engaged in moderate – vigorous intensity exercise using elliptical bike for 30 minutes, five days a week for 3 months; however, 30 individuals completed the exercise. The control group comprised of 40 individuals that did not do exercise but 30 individuals completed the study. Blood (8ml) was collected from each of the participants at baseline, 1 month, 2 months, and 3 months. AMH, FSH, LH, Estrogen and Progesterone levels were analyzed using enzyme- linked Immunosorbent assay (ELISA) method. Results were regarded as significant at p˂ 0.05. In the exercise group, the serum level of day 3 FSH, LH, Estrogen were significantly lower from 7.27±0.77 mIU/ml, 7.00±0.77 mIU/ml, 36.33±5.13 pg/ml respectively at baseline to 5.62±0.48 mIU/ml, 5.36±0.80 mIU/ml, 21.36±4.34 pg/ml respectively after 3 months of exercise while there was significantly higher levels of AMH and day 21 progesterone after 3 months of exercise compared with the baseline and respective control (p<0.05). Prolonged Moderate-to-vigorous exercise may enhance fertility and well-being of premenopausal women. Key words: Anti-Mullerian hormone (AMH), day 3 Follicle stimulating hormone (FSH), Luteinizing Hormone (LH), day 3 Estrogen, day 21 Estrogen, day 21 Progesterone, moderate – vigorous exercise, ovarian reserve, ovulatory status, premenopausal women.

2021 ◽  
Vol 13 (4) ◽  
pp. 396-402
I Gede Widhiantara ◽  
Anak Agung Ayu Putri Permatasari ◽  
I Wayan Rosiana ◽  
Putu Angga Wiradana ◽  
Luh Putu Widiastini ◽  

BACKGROUND: The discovery of herbal ingredients for antihypercholesterolemic and to improve male reproductive function is very necessary due to high-cholesterol diet factors. Blumea balsamifera leaf extract (BBLE) is known to be able to increase the number and diameter of Leydig cells in rats given high-fat feed. This study was to conducted to determine the levels of total cholesterol, body weight, plasma malondialdehyde (MDA), Superoxide Dismutase (SOD), Luteinizing Hormone (LH) in high-cholesterol-fed male rats provided with BBLE.METHODS: This research utilized a randomized post-test only control group. Ethanol was used to extract the BBLE, which was then evaporated. For 21 days, 16 Wistar rats were given a high-cholesterol diet. To determine the effect of BBLE on the high-cholesterol diet, the samples were divided into two groups (control and BBLE group) on day 22. The treatments lasted 30 days. SOD, plasma MDA, LH, and total cholesterol were measured.RESULTS: The results showed that the SOD and LH parameters were significantly higher in the treatment of BBLE compared to the control group (p<0.05). The parameters of total cholesterol levels, bodyweight, and MDA of rats given BBLE were significantly lower than those of the control group (p<0.05).CONCLUSION: Our findings highlight that BBLE has antihypercholesterolemic and antioxidant effects. The BBLE also has potential to be used as a therapy to maintain male reproductive function because it has a positive effect on the hypothalamic-pituitary axis through increasing LH secretion.KEYWORDS: Malondialdehyde, Superoxide dismutase, Luteinizing hormone, Blumea balsamifera extract, High-cholesterol diet

2021 ◽  
Vol 10 (2) ◽  
pp. 683-688
Puji Fauziyyah Iskandar

Pendahuluan: Infertilitas merupakan permasalahan utama pada pasangan suami istri dan 40% disebabkan oleh faktor laki-laki. Hal ini disebabkan oleh peningkatan reactive oxygen species (ROS) yang dapat mempengaruhi kuantitas maupun kualitas spermatozoa sehingga terdapat perubahan jumlah maupun motilitas dari spermatozoa yang diproduksi. Tujuan: mengetahui efektivitas pemberian ekstrak lada hitam (Piper nigrum L) terhadap jumlah dan motilitas spermatozoa. Metode: menggunakan studi literatur dari berbagai sumber jurnal nasional maupun internasional dengan cara meringkas pembahasan, dan membadingkan hasil yang disajikan pada berbagai sumber tersebut. Hasil: lada hitam memiliki kandungan utama piperin yang berperan sebagai antioksidan. Piperin juga dapat meningkatkan hormon gonadotropin terutama luteinizing hormone (LH) yang akan merangsang pembentukan dari spermatozoa atau proses spermatogenesis sehingga berpengaruh terhadap jumlah dan motilitas spermatozoa. Kesimpulan: Pemberian ekstrak lada hitam memiliki pengaruh terhadap jumlah dan motilitas spermatozoa

2021 ◽  
Vol 36 (4) ◽  
pp. 167-174
Kwan-Sik Min ◽  
Munkhzaya Byambaragchaa ◽  
Seung-Hee Choi ◽  
Hyo-Eun Joo ◽  
Sang-Gwon Kim ◽  

2021 ◽  
Vol 16 (2) ◽  
pp. 69
Muslim Muslim ◽  
Agus Oman Sudrajat ◽  
Muhammad Zairin Jr. ◽  
Muhammad Agus Suprayudi ◽  
Arief Boediono ◽  

Indonesian leaffish, Pristolepis grootii (Bleeker, 1852), is an undomesticated freshwater fish species native to the rivers, flooded swamps, and tributaries of Indonesia. The fish is mainly captured for consumption. In order to prevent its extinction and supply its growing demands, the artificial breeding of the fish should be developed. The purpose of this study was to determine the optimum dose of luteinizing hormone-releasing hormone analog (LHRHa) for stimulating the female P. grootii gonadal development at a dosage of 0, 1, 10, and 50 µg kg-1 of fish. Female fish (20.0 ± 0.6 g) were adapted for 30 days in the rearing environment and then separated into 12 aquariums with six fish per aquarium. Fish were then reared for another 21 days and fed with Tubifex sp. The LHRHa injection was conducted twice on day-7 and 14. Fish bodyweight, gonadosomatic index, gonad histology, blood estradiol-17â, and FSH-â and LH-â gene expression were evaluated at day 0, 7, 14, and 21. The results showed that the injection of the LHRHa hormone stimulated the development of fish gonads and was better achieved with a higher concentration of LHRHa. The best treatment was observed by the administration of 50 µg kg-1 of LHRHa that produced the fastest development among all treatments. This study demonstrated that the LHRHa induction could potentially stimulate the gonadal development of the newly domesticated fish. To our knowledge, this is the first study that reported the success of the induction of female gonad development in the Indonesian leaffish P. grooti.KEYWORDS: 

Endocrinology ◽  
2021 ◽  
Karen J Tonsfeldt ◽  
Pamela L Mellon ◽  
Hanne M Hoffmann

Abstract For 3.5 billion years before electric light was invented in 1879, life on Earth evolved under the pattern of light during the day and darkness during the night. Through evolution, nearly all organisms internalized the temporal rhythm of Earth’s 24-hour rotation and evolved self-sustaining biological clocks with a ~24-hour rhythm. These internal rhythms are called circadian rhythms, and the molecular constituents that generate them are called molecular circadian clocks. Alignment of molecular clocks with the environmental light-dark rhythms optimizes physiology and behavior. This is particularly true for reproductive function, in which seasonal breeders use day-length information to time yearly changes in fertility. However, it is becoming increasingly clear that light-induced disruption of circadian rhythms can negatively impact fertility in non-seasonal breeders as well. In particular, the luteinizing hormone surge promoting ovulation, is sensitive to circadian disruption. In this review, we will summarize our current understanding of the neuronal networks that underlie circadian rhythms and the luteinizing hormone surge.

2021 ◽  
Vol 25 (5-6) ◽  
pp. 39-42
O.A. Polyvyana ◽  
V.I. Shepitko ◽  
Ye.V. Stetsuk ◽  
O.Ye. Akimov ◽  
O.S. Yakushko ◽  

In recent years, researchers have focused on the problem of the dependence of the functioning of various organs and systems on the level of androgens. The effect of long inhibition of testosterone synthesis by triptorelin on liver tissue is poorly understood. The aim of this research was to establish the microscopic organization of rat livers, production of nitric oxide and the intensity of oxidative stress in the rat livers during experimental central deprivation of luteinizing hormone synthesis by diphereline injection on the 270-360th day of the experiment. The experiments were carried out on 30 sexually mature male white rats of the Wistar line. Rats were divided into 2 groups: the control group (10) and the experimental group (20). Animals from the experimental group were subcutaneously injected triptorelin at a dose of 0.3 mg of the active substance/ per kg of body weight for 360 days, while the control group received an injection of saline. It was found that oxidative stress develops in hepatocytes, which is morphologically confirmed by karyopyknosis of the nuclei, oxyphilia of the cytoplasm with the appearance of a significant number of vacuoles in it. The vessels of the microcirculatory bed react with stasis. An increase in the production of superoxide radical anion in rat liver may be due to the absence of an inhibitory effect of testosterone on macrophages and liver mitochondria, which is accompanied by depletion of antioxidant enzymes and the development of oxidative stress. The intensity of biochemical markers of oxidative stress on the 360th day is lower than on the 270th day, which is due to an increase in the activity of antioxidant enzymes and a decrease in the production of reactive oxygen species.

2021 ◽  
Ayaka Kukino ◽  
Thijs J Walbeek ◽  
Lori J Sun ◽  
Alexander T Watt ◽  
Jin Ho Park ◽  

In rodents, eating at atypical circadian times, such as during the biological rest phase when feeding is normally minimal, reduces fertility. Prior findings suggest this fertility impairment is due, at least in part, to reduced mating success. However, the physiological and behavioral mechanisms underlying this reproductive suppression are not known. In the present study, we tested the hypothesis that mistimed feeding-induced infertility is due to a disruption in the normal circadian timing of mating behavior and/or the generation of pre-ovulatory luteinizing hormone (LH) surges (estrogen positive feedback). In the first experiment, male+female mouse pairs, acclimated to be food restricted to either the light (mistimed feeding) or dark (control feeding) phase, were scored for mounting frequency and ejaculations over 96 hours. Male mounting behavior and ejaculations were distributed much more widely across the day in light-fed mice than in dark-fed controls and fewer light-fed males ejaculated. In the second experiment, the timing of the LH surge, a well characterized circadian event driven by estradiol (E2) and the SCN, was analyzed from serial blood samples taken from ovariectomized and E2-primed female mice that were light-, dark-, or ad-lib-fed. LH concentrations peaked 2h after lights-off in both dark-fed and ad-lib control females, as expected, but not in light-fed females. Instead, the normally clustered LH surges were distributed widely with high inter-mouse variability in the light-fed group. These data indicate that mistimed feeding disrupts the temporal control of the neural processes underlying both ovulation and mating behavior, contributing to subfertility.

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Chang Ji ◽  
Wanling Xu ◽  
Zhiqing Zhang ◽  
Shuai Cui ◽  
Wei Yi

Polycystic ovarian syndrome (PCOS) is a common, complex, and heterogeneous endocrine and metabolic disorder. There is no standardized treatment, and it therefore requires individualized therapies according to the symptoms and pathogenesis of each patient. The present study aimed to determine the effect of electroacupuncture at the acupoints Zusanli (ST36), Sanyinjiao (SP6), and Neiguan (PC6) on reproductive disorders and insulin resistance in a murine model of PCOS induced by dehydroepiandrosterone (DHEA). Vaginal smear analysis was used to determine mice estrous cycle; intraperitoneal glucose and insulin tolerance tests were adopted to analyze metabolic characteristics; enzyme-linked immunosorbent assay was used to measure hormone levels; gene expression was quantified with real-time PCR; hematoxylin and eosin staining was used to observe ovarian morphology. We observed disordered estrous cycle, polycystic ovarian morphology, and higher levels of homeostasis model assessment-insulin resistance (HOMA-IR) and testosterone (T), indicating successful modeling of PCOS. DHEA increased levels of estrogen (E2), progesterone (P), testosterone (T), luteinizing hormone (LH), and follicle-stimulating hormone (FSH), and EA treatment restored them to levels seen in the control group. EA reduced the days in estrus caused by DHEA, improved the abnormal sex hormone receptor genes, and attenuated the DHEA-induced histomorphological changes in mouse ovaries. The average expressions of the androgen receptor (AR), estrogen receptor (ER), luteinizing hormone receptor (LHR), and follicle-stimulating hormone receptor (FSHR) genes in the ovary greatly increased after DHEA treatment and significantly decreased in the DHEA + EA group. After EA treatment, the cystic follicle (CF) number was reduced and corpora lutea (CL) increased in the DHEA + EA group compared to the DHEA group. EA improved glucose intolerance and insulin intolerance. Statistical analysis of intraperitoneal glucose tolerance test-area under curve (IPGTT-AUC) glucose levels revealed a significant decrease in DHEA group mice compared to the control and DHEA + EA groups. EA was found to restore fasting blood glucose, fasting serum insulin, and HOMA-IR. In summary, our study suggests that EA has a remarkable effect in the DHEA-induced murine PCOS model. Management of EA could improve estrous cycle, hormonal disorders, abnormal sex hormone receptors in ovaries, ovary morphology, and insulin resistance in PCOS mice.

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