RESUMEN

Estradiol (E2) deficiency arising from menopause is closely related to changes in body composition and declines of muscle mass and strength in elderly women. Whole-body vibration training (WBV) is an emerging approach expected to improve muscle mass and strength of older person, but the underlying mechanisms remain unclear. The balance between protein synthesis and degradation is a determining factor for muscle mass and strength, which is regulated by Akt-mTOR and FoxO1 signal pathway, respectively. In the present study, we firstly determined whether the effects of WBV on muscle mass and strength in ovariectomized female mice was affected by estrogen level, then investigated whether this was associated with Akt-mTOR and FoxO1 signal pathways. We found that (1) WBV, E2 supplementation (E) and WBV combined with E2 supplementation (WBV+E) significantly increased serum estradiol content, quadriceps muscle mass and grip strength in ovariectomized mice, accompanied with alterations of body composition (reducing fat content, increasing lean body mass and lean percent), furthermore, the altered degrees of these indicators by WBV+E were greater than WBV alone; (2) WBV, E and WBV+E remarkably increased the activities of Akt and mTOR and decreased FoxO1 activity, and the changed degrees by WBV+E were greater than WBV alone; (3) Pearson correlation coefficient revealed that serum estradiol content was positively correlated with Akt and mTOR activities, while inversely associated with FoxO1 activity. We concluded that WBV could significantly increase muscle mass and strength in ovariectomized mice, which might achieve through activating Akt-mTOR and suppressing FoxO1 signal pathways, and the improving effect of WBV on muscle mass and strength was better when in the presence of estrogen.

Asunto(s)

Estradiol , Estrógenos , Proteína Forkhead Box O1 , Fuerza Muscular , Ovariectomía , Serina-Treonina Quinasas TOR , Vibración , Animales , Femenino , Vibración/uso terapéutico , Ratones , Fuerza Muscular/fisiología , Serina-Treonina Quinasas TOR/metabolismo , Estradiol/sangre , Proteína Forkhead Box O1/metabolismo , Estrógenos/sangre , Estrógenos/metabolismo , Transducción de Señal , Composición Corporal/fisiología , Humanos , Proteínas Proto-Oncogénicas c-akt/metabolismo , Músculo Esquelético/metabolismo , Músculo Esquelético/fisiología , Condicionamiento Físico Animal/fisiología , Condicionamiento Físico Animal/métodos

RESUMEN

Musculoskeletal pain is one of the common symptoms of menopause syndrome throughout the world. Estradiol is the most potent and abundant derivative of estrogen and is associated with musculoskeletal pain, stiffness, and depressed mood during the menopausal transition. C-telopeptide is a molecule released during osteoclastic bone resorption and degradation of type I collagen, which is reported to have higher levels in individuals with musculoskeletal pain. An observational analytical study with a cross-sectional design was used in this research. Estradiol and C-telopeptide levels were measured in this study using enzyme-linked immunosorbent assay (ELISA). Musculoskeletal pain was assessed using the Nordic Musculoskeletal Questionnaire (NMQ) and the Menopause Quality of Life Questionnaire (MENQOL). Musculoskeletal pain was determined if the participant answered "yes" on questions number 12, 14 and 25 on the MENQOL. Data analysis was performed using the independent Student t-test for normally distributed data and the Mann-Whitney test for non-normally distributed data. A correlation test was performed using the Pearson correlation test for normally distributed data and the Spearman correlation test for non-normally distributed data. The results showed a non-significant relationship between estradiol and C-telopeptide levels with musculoskeletal pain assessed using the NMQ or MENQOL questionnaires. The correlation test also showed no correlation between estradiol and C-telopeptide levels in women with and without musculoskeletal pain.

Asunto(s)

Colágeno Tipo I , Estradiol , Menopausia , Dolor Musculoesquelético , Péptidos , Calidad de Vida , Humanos , Femenino , Estradiol/sangre , Dolor Musculoesquelético/sangre , Estudios Transversales , Persona de Mediana Edad , Menopausia/sangre , Colágeno Tipo I/sangre , Péptidos/sangre , Encuestas y Cuestionarios , Ensayo de Inmunoadsorción Enzimática

RESUMEN

Menopause leads to decreased estradiol levels affecting tissue health and causing local inflammation in the genital organs and urinary tract. The rise of blood C-reactive protein (CRP) levels in menopausal women may indicate systemic inflammation associated with estradiol decline. The aim of this study was to determine the relationship between serum estradiol and CRP levels on genitourinary syndrome in menopausal women. A cross-sectional study was conducted among menopausal women who had not experienced menstruation for at least 12 consecutive months at Prof. dr. Chairuddin P. Lubis Hospital, Medan, Indonesia, in 2023. Estradiol and CRP levels were measured using enzyme-linked immunosorbent assay (ELISA) and the presence of genitourinary syndrome was assessed using the Menopause-Specific Quality of Life (MENQOL) questionnaire. The mean levels of estradiol and CRP were compared to menopausal women with and without genitourinary syndrome with the Mann-Whitney test. To assess the correlation between estradiol and CRP levels, and between their levels with the presence of genitourinary symptoms, the Spearman correlation test was used. The genitourinary syndrome was reported in 25% of the total included menopausal women. Our data indicated that the mean estradiol levels were not significantly different between menopausal women with and without genitourinary syndrome (9.13±2.47 pg/mL vs 18.96±31.23 pg/mL, p=0.881). The mean serum CRP level of menopausal women with genitourinary syndrome (9.72±6.30 mg/L) was higher than that of women without the syndrome (2.09±1.26 mg/L) with p<0.001. In addition, serum CRP level, not estradiol, was correlated with the symptom score of genitourinary syndrome. This study highlights that to identify and manage genitourinary syndrome, monitoring of CRP levels is essential in menopausal women.

Asunto(s)

Proteína C-Reactiva , Estradiol , Enfermedades Urogenitales Femeninas , Menopausia , Calidad de Vida , Humanos , Femenino , Proteína C-Reactiva/análisis , Proteína C-Reactiva/metabolismo , Estradiol/sangre , Menopausia/sangre , Estudios Transversales , Persona de Mediana Edad , Enfermedades Urogenitales Femeninas/sangre , Síndrome , Indonesia/epidemiología , Encuestas y Cuestionarios , Ensayo de Inmunoadsorción Enzimática

RESUMEN

OBJECTIVE: Aim: To establish the peculiarities of the hormonal background in women with abnormal uterine bleeding and extragenital disorders. PATIENTS AND METHODS: Materials and Methods: The study involved examination of 100 women of reproductive age with concomitant ED and AUB (MG). CG included 50 healthy women. MG women were additionally divided into subgroups depending on the detected pathological changes in the uterine cavity. When examining the hormonal status, concentrations of FSH, LH, estradiol, progesterone, and leptin in BS were determined. Additionally, the level of 25-hydroxyvitamin D ((25-OH) D) was determined. RESULTS: Results: The decrease in FSH level in subgroups of GP, PSL, EH, EHL was 1.8-2.4 times (KWT, p<0.01). LH in BS of MG patients was statistically lower than that of CG patients (MWT, p=0.0083). The lowest level of LH was registered in patients with EHL, which was 2 times lower than this indicator in CG. A statistically significant increase in the level of estradiol was registered in 73% of MG patients (MWT, p=0.044). The lowest level of progesterone was registered in patients with EHL - 8.40, which is 4.7 times lower than in CG (MWT, p=0.0021). A statistically significant increase in the level of leptin in BS was observed in MG patients (KWT, p=0.0021). The highest level of leptin was found in women with AFP, 2.3 times higher than CG indicators. A statistically significant correlation between the level of leptin and BMI (r=0.86, p=0.011) and a statistically significant (p=0.023) correlation between the level of leptin and estradiol in BS of patients of the examined groups (r=0.42) were revealed. In 87% of MG women, vitamin D deficiency was observed in BS (KWT, p=0.03). A statistically significant (p=0.01) negative correlation between the level of estradiol and vitamin D in the BS of female patients was revealed (r=-0.61, p=0.01). CONCLUSION: Conclusions: Women of reproductive age with AUB and ED were found to have disorders in the hypothalamic-pituitary-ovarian system. Most patients are characterized by an elevated level of leptin, the concentration of which is closely correlated with BMI, and an elevated level of estradiol is correlated with the level of vitamin D.

Asunto(s)

Estradiol , Hormona Folículo Estimulante , Leptina , Hormona Luteinizante , Progesterona , Hemorragia Uterina , Humanos , Femenino , Adulto , Estradiol/sangre , Progesterona/sangre , Hormona Luteinizante/sangre , Leptina/sangre , Hormona Folículo Estimulante/sangre , Hemorragia Uterina/sangre , Vitamina D/sangre , Vitamina D/análogos & derivados , Adulto Joven , Persona de Mediana Edad

RESUMEN

BACKGROUND: The causal relationships between testosterone, estradiol, estrogen sulfotransferase, and idiopathic pulmonary fibrosis (IPF) are not well understood. This study employs a bidirectional two-sample Mendelian Randomization (MR) approach to explore these associations. METHODS: All genetic data utilized in our study were obtained from the IEU Open GWAS project. For the MR analysis, we employed the inverse variance weighted (IVW), MR-Egger, and weighted median methods to assess the causal relationships. We also conducted a multivariate MR (MVMR) analysis, with adjustments made for smoking. To ensure the robustness of our findings, sensitivity analyses were conducted using Cochran's Q test, MR-Egger regression, the MR-PRESSO global test, and the leave-one-out method. RESULTS: Genetically predicted increases in serum testosterone levels by one standard deviation were associated with a 58.7% decrease in the risk of developing IPF (OR = 0.413, PIVW=0.029, 95% CI = 0.187 ∼ 0.912), while an increase in serum estrogen sulfotransferase by one standard deviation was associated with a 32.4% increase in risk (OR = 1.324, PIVW=0.006, 95% CI = 1.083 ∼ 1.618). No causal relationship was found between estradiol (OR = 1.094, PIVW=0.735, 95% CI = 0.650 ∼ 1.841) and the risk of IPF. Reverse MR analysis did not reveal any causal relationship between IPF and testosterone (OR = 1.001, PIVW=0.51, 95% CI = 0.998 ∼ 1.004), estradiol (OR = 1.001, PIVW=0.958, 95% CI = 0.982 ∼ 1.019), or estrogen sulfotransferase (OR = 0.975, PIVW=0.251, 95% CI = 0.933 ∼ 1.018). The MVMR analysis demonstrated that the association between testosterone (OR = 0.442, P = 0.037, 95% CI = 0.205 ∼ 0.953) and estrogen sulfotransferase (OR = 1.314, P = 0.001, 95% CI = 1.118 ∼ 1.545) and the risk of IPF persisted even after adjusting for smoking. CONCLUSIONS: Increased serum levels of testosterone are associated with a reduced risk of IPF, while increased levels of serum estrogen sulfotransferase are associated with an increased risk. No causal relationship was found between estradiol and the development of IPF. No causal relationship was identified between IPF and testosterone, estradiol, or estrogen sulfotransferase.

Asunto(s)

Estradiol , Fibrosis Pulmonar Idiopática , Análisis de la Aleatorización Mendeliana , Sulfotransferasas , Testosterona , Humanos , Estradiol/sangre , Sulfotransferasas/genética , Testosterona/sangre , Fibrosis Pulmonar Idiopática/genética , Fibrosis Pulmonar Idiopática/sangre , Estudio de Asociación del Genoma Completo , Polimorfismo de Nucleótido Simple , Femenino , Masculino , Factores de Riesgo

RESUMEN

OBJECTIVE: This study aimed to evaluate the impact of adding 4 mg estradiol valerate to progesterone for luteal support on pregnancy rates in IVF cycles following a long protocol with reduced luteal serum estradiol levels post-hCG triggering. DESIGN, SETTING, AND PARTICIPANTS: The prospective randomized controlled trial was conducted at a public tertiary hospital reproductive center with 241 patients who experienced a significant decrease in serum estrogen levels post-oocyte retrieval. INTERVENTIONS: Participants received either a daily 4 mg dose of estradiol valerate in addition to standard progesterone or standard progesterone alone for luteal support. RESULTS: The ongoing pregnancy rate did not show a significant difference between the E2 group and the control group (56.6% vs. 52.2%, with an absolute rate difference (RD) of 4.4%, 95% CI -0.087 to 0.179, P = 0.262). Similarly, the live birth rate, implantation rate, clinical pregnancy rate, early abortion rate, and severe OHSS rate were comparable between the two groups. Notably, the E2 group had no biochemical miscarriages, contrasting significantly with the control group (0.0% vs. 10.7%, RD -10.7%, 95% CI -0.178 to -0.041, P = 0.000). In the blastocyst stage category, the clinical pregnancy rate was notably higher in the E2 group compared to the control group (75.6% vs. 60.8%, RD 14.9%, 95% CI 0.012 to 0.294, P = 0.016). CONCLUSION: Adding 4 mg estradiol valerate to progesterone for luteal support does not affect the ongoing pregnancy rate in embryo transfer cycles using a long protocol with a significant decrease in serum estradiol levels after hCG triggering. However, it may reduce biochemical miscarriages and positively impact clinical pregnancy rates in blastocyst embryo transfer cycles. TRIAL REGISTRATION: ChiCTR1800020342.

Asunto(s)

Gonadotropina Coriónica , Estradiol , Fertilización In Vitro , Fase Luteínica , Inducción de la Ovulación , Índice de Embarazo , Progesterona , Humanos , Femenino , Estradiol/sangre , Estradiol/administración & dosificación , Embarazo , Adulto , Gonadotropina Coriónica/administración & dosificación , Fase Luteínica/efectos de los fármacos , Fase Luteínica/sangre , Fertilización In Vitro/métodos , Progesterona/sangre , Progesterona/administración & dosificación , Estudios Prospectivos , Inducción de la Ovulación/métodos , Transferencia de Embrión/métodos , Recuperación del Oocito/métodos

RESUMEN

Knowledge on hormonal regulation of reproductive cycles in viperid snakes is still incipient, especially when it comes to females and tropical species. There is an urgent need to understand the reproduction of venomous snakes to improve assisted reproduction techniques and optimize the maintenance of these animals in captivity. With this in mind, we monitored Northern pit viper females year-round throughout different seasons via serum levels of progesterone (P4) and estradiol (E2) in conjunction with ultrasound examinations. Ovarian follicles were classified according to their size and stage of vitellogenesis in F-I and F-II (non-vitellogenic phase) or in F-III and F-IV (vitellogenic phase). During autumn and winter, five adult males were rotated among these females for reproductive pairing, which resulted in 17 copulations and 2 pregnancies in the first year and 12 copulations and 5 pregnancies in the second year. Then, we assessed changes in P4 and E2 levels according to seasons, predominant ovarian structures and the presence of embryos or eggs in the oviduct. Our findings showed high levels of E2 when a greater number of vitellogenic follicles were detected, indicating a possible influence of E2 on vitellogenesis and higher levels of P4 whenever eggs and embryos were visualized in the oviduct, implying its role in maintaining pregnancy. Descriptive analysis of the vipers' ovarian cycles revealed a greater number of vitellogenic follicles during winter, probably as a result of increases in E2; whereas pregnancies occurred predominantly in spring, under the influence of P4. The use of ultrasound images, as a minimally invasive methodology, associated with serum steroid levels has proven to be an efficient approach in the reproductive monitoring of Northern pit vipers in vivo. In addition, these data suggest that female pit vipers under human care display a seasonal reproductive cycle, despite earlier studies involving captive males of the species indicating a lack of seasonality in sperm production and quality.

Asunto(s)

Estradiol , Progesterona , Ultrasonografía , Animales , Femenino , Progesterona/sangre , Estradiol/sangre , Estaciones del Año , Masculino , Bothrops , Ovario/diagnóstico por imagen , Ovario/metabolismo , Folículo Ovárico/diagnóstico por imagen , Folículo Ovárico/metabolismo , Genitales Femeninos/diagnóstico por imagen , Bothrops atrox

RESUMEN

Purpose: The study aimed to investigate the correlation between the change of sex hormone levels and ocular surface parameters in girls with idiopathic central precocious puberty(ICPP). Methods: Eighteen girls with ICPP and 18 age-matched normal girls participated in this study, all of the participants had undergone physical measurements, laboratory tests, imaging examination and ocular surface assessments. Results: The Objective Scatter Index (OSI) in the ICPP group was significantly higher than in the control group (P = 0.031), girls with ICPP showed slightly lower MNITBUT compared to the normal control group, although this difference was not statistically significant. Bivariate analysis revealed a positive association between estradiol and OSI (r=0.383, P=0.021), Additionally, in the study population, both Luteinizing hormone (LH) and Follicle-stimulating hormone (FSH) were negatively correlated with Mean noninvasive tear breakup time (MNITBUT) (r=-0.359, P=0.031)(r=-0.357, P=0.032). Conclusion: In comparison with the normal control group, alterations in the OSI were observed in girls with ICPP. This alteration may be associated with an elevation in estrogen levels. Although there was a slight non-significant decrease in NITBUT in ICPP girls, the negative correlation between LH and FSH with MNITBUT suggests new perspective for further investigation.

Asunto(s)

Hormona Folículo Estimulante , Hormona Luteinizante , Pubertad Precoz , Lágrimas , Humanos , Femenino , Pubertad Precoz/sangre , Pubertad Precoz/metabolismo , Niño , Hormona Luteinizante/sangre , Lágrimas/metabolismo , Hormona Folículo Estimulante/sangre , Estradiol/sangre , Hormonas Esteroides Gonadales/sangre , Estudios de Casos y Controles

RESUMEN

In humans' and experimental animals' components of the somatotropic axis, such as growth hormone (GH) and insulin-like growth factor 1 (IGF-1) concentrations, decrease with advancing age. Although there is evidence regarding IGF-1, the effect of age on GH in mares, as well as the relationships between both parameters, have not yet been elucidated. On the other hand, although GH and IGF-1 are related to follicular development, it is unknown if they could be correlated with the circulating concentrations of ovarian steroids in mares, as occurs in other species. The hypothesis of this study was that both GH and IGF-1 could experience physiological changes with advancing age also in mares, and that both GH/IGF-1 could be correlated with oestradiol-17ß (E2) and progesterone (P4), as recorded for other species. Hence, the objective of this study was to evaluate the concentrations of GH, IGF-1, E2, and P4 in mares, according to the different ages. Blood samples were drawn from 56 healthy cyclic Spanish Purebred mares belonging to four different age groups: 6-9 years, 10-13 years, 14-16 years and >16 years. Mares aged 6-9 years and 10-13 years showed higher GH concentrations (P < 0.05) than mares of 14-16 and >16 years; and mares aged 14-16 showed higher GH concentrations (P < 0.05) than >16 years (P < 0.05). Mares aged >16 years showed lower IGF-1 concentrations (P < 0.05) than mares of 6-9, 10-13 and 14-16 years (P < 0.05). The concentrations of E2 and P4 showed no significant differences among different age groups. Both GH and IGF-1 were not correlated with each other or with E2 and P4. The concentrations of E2 and P4 did not change with age. Advancing age leads to a decrease in the activity of the somatotropic axis in physiological cyclic mares, represented by a significant GH reduction, which, however, was ascribed for IGF-1 exclusively to mares over 16 years of age, without alterations in steroid hormone patterns.

Asunto(s)

Envejecimiento , Biomarcadores , Estradiol , Hormona del Crecimiento , Factor I del Crecimiento Similar a la Insulina , Progesterona , Animales , Caballos/fisiología , Factor I del Crecimiento Similar a la Insulina/metabolismo , Factor I del Crecimiento Similar a la Insulina/análisis , Femenino , Hormona del Crecimiento/sangre , Estradiol/sangre , Progesterona/sangre , Biomarcadores/sangre , Ovario/fisiología , Ovario/metabolismo

RESUMEN

A novel self-powered and flexible enzymatic biofuel cell (EBFC)-based aptasensor was developed for the sensitive and selective detection of 17 ß-estradiol (E2). A flexible polyvinyl alcohol (PVA)-tannic acid­carbon nanotube/reduced graphene oxide (PTCR) substrate was modified with gold nanoparticles (AuNPs) and thiolated aptamer 1 (Apt1) to yield Apt1@AuNPs/PTCR. A copper-based metal-organic framework (Cu-MOF) with peroxidase mimicking activity was employed to anchor glucose oxidase (GOD) and Apt2, forming the Cu-MOF@GOD/Apt2 tag. When E2 was recognized by Apt1, the anchored E2 quantitatively recognized Cu-MOF@GOD/Apt2 to create a Cu-MOF@GOD/Apt2-E2-Apt1 sandwich structure for glucose oxidation to generate electrical power. Increased E2 concentrations enhanced Cu-MOF@GOD/Apt2 capture and amplified the electrical signal. The electrical power increased linearly as the E2 concentration increased from 1.0 pM to 1.0 nM. The sensor was successfully applied to various food samples and blood serum detection. This work promoted the application of novel self-powered biosensors for food safety analysis.

Asunto(s)

Aptámeros de Nucleótidos , Técnicas Biosensibles , Cobre , Oro , Estructuras Metalorgánicas , Aptámeros de Nucleótidos/química , Técnicas Biosensibles/instrumentación , Estructuras Metalorgánicas/química , Cobre/química , Oro/química , Nanopartículas del Metal/química , Humanos , Peroxidasa/química , Estrógenos/análisis , Estrógenos/química , Glucosa Oxidasa/química , Estradiol/química , Estradiol/análisis , Estradiol/sangre , Límite de Detección

RESUMEN

Difficulties in fear regulation can sometimes result in maladaptive fear responses. To better understand how to improve fear regulation, it is important to determine how known factors, such as sex hormone status and stress, might interact to influence fear memory. Research has shown that women with high estradiol levels (mid-cycle) and men exhibit better extinction retention compared to women with low estradiol levels (women in the early follicular cycle or using oral contraceptives). Stress has also been demonstrated to affect both the learning and retention of extinction. Despite documented interactions between stress and sex hormones, their combined effects have not been thoroughly studied. This study aims to examine the impact of stress as a function of sex hormone status on extinction learning and retention. A total of 168 non-clinical participants were studied, including men (n = 46), women using oral contraceptives (n = 38), women in the early follicular phase (n = 40), and women in mid-cycle (n = 44). On Day 1, fear acquisition training was performed. On day 2, prior to extinction training, half of the participants were exposed to a psychosocial stressor, while the other half performed a non-stressful control task. On day 3, extinction retention was tested. Fear was quantified using skin conductance responses, while stress hormones were quantified through saliva samples. Exposure to stress prior to extinction training did not affect extinction learning, regardless of sex hormone status. In contrast, pre-extinction stress exposure had different effects on extinction retention depending on hormone status. Stressed men showed impairment in extinction retention compared to controls, while the experimental condition had no effect on naturally cycling women. Regardless of stress exposure, early follicular women exhibited a deficit in fear regulation, while mid-cycle women showed effective fear regulation. Among women using oral contraceptives, the stress group demonstrated better extinction retention compared to the control group. These results demonstrate the importance of considering sex hormone status and stress exposure during extinction learning, as both components may modulate extinction retention. These results could help identifying hormonal conditions that may enhance the effectiveness of extinction-based psychological therapies used in the treatment of fear-related disorders.

Asunto(s)

Extinción Psicológica , Miedo , Estrés Psicológico , Humanos , Extinción Psicológica/fisiología , Femenino , Masculino , Adulto , Miedo/fisiología , Miedo/psicología , Estrés Psicológico/metabolismo , Estrés Psicológico/fisiopatología , Adulto Joven , Estradiol/metabolismo , Estradiol/sangre , Estradiol/análisis , Caracteres Sexuales , Hormonas Esteroides Gonadales/metabolismo , Hormonas Esteroides Gonadales/análisis , Factores Sexuales , Adolescente , Saliva/química , Saliva/metabolismo , Fase Folicular/fisiología , Fase Folicular/psicología , Ciclo Menstrual/fisiología , Ciclo Menstrual/psicología , Condicionamiento Clásico/fisiología

RESUMEN

Bilateral salpingo-oophorectomy (BSO; removal of ovaries and fallopian tubes) prior to age 48 is associated with elevated risk for both Alzheimer's disease (AD) and sleep disorders such as insomnia and sleep apnea. In early midlife, individuals with BSO show reduced hippocampal volume, function, and hippocampal-dependent verbal episodic memory performance associated with changes in sleep. It is unknown whether BSO affects fine-grained sleep measurements (sleep microarchitecture) and how these changes might relate to hippocampal-dependent memory. We recruited thirty-six early midlife participants with BSO. Seventeen of these participants were taking 17ß-estradiol therapy (BSO+ET) and 19 had never taken ET (BSO). Twenty age-matched control participants with intact ovaries (AMC) were also included. Overnight at-home polysomnography recordings were collected, along with subjective sleep quality and hot flash frequency. Multivariate Partial Least Squares (PLS) analysis was used to assess how sleep varied between groups. Compared to AMC, BSO without ET was associated with significantly decreased time spent in non-rapid eye movement (NREM) stage 2 sleep as well as increased NREM stage 2 and 3 beta power, NREM stage 2 delta power, and spindle power and maximum amplitude. Increased spindle maximum amplitude was negatively correlated with verbal episodic memory performance. Decreased sleep latency, increased sleep efficiency, and increased time spent in rapid eye movement sleep were observed for BSO+ET. Findings suggest there is an association between ovarian hormone loss and sleep microarchitecture, which may contribute to poorer cognitive outcomes and be ameliorated by ET.

Asunto(s)

Nivel de Alerta , Polisomnografía , Sueño , Humanos , Femenino , Persona de Mediana Edad , Sueño/fisiología , Nivel de Alerta/fisiología , Adulto , Homeostasis/fisiología , Salpingooforectomía , Estradiol/sangre , Calidad del Sueño , Ovariectomía , Menopausia/fisiología

RESUMEN

Exposure to environmental heavy metals may pose a risk factor for developing preeclampsia (PE) modified through intervention. This case-control study aimed to investigate the association between serum heavy metal concentrations and PE in pregnant women and whether hormones served as mediating factors in the impact of heavy metals on PE. From October 2020 to 2022, 160 patients with PE and 160 pregnant women with normal deliveries were recruited at Dongguan Songshan Lake Central Hospital. Serum concentrations of manganese (Mn), nickel (Ni), copper (Cu), zinc (Zn), arsenic (As), cadmium (Cd), lead (Pb), ß-human chorionic gonadotropin (ß-hCG), progesterone (P), estradiol (E2), testosterone (T), cortisol (Cort), and cortisone (Cor) were measured. Logistic, restricted cubic splines, weighted quantile sum and multivariate linear regression models were employed to account for different aspects and explore the relationships among heavy metals, hormones, and PE. Mediation model analysis was performed to assess the role of hormones in mediation. The median concentrations of Mn, E2, and Cort were lower in the PE group than in the control group. The median concentrations of Cu, Zn, ß-hCG, and T were higher in the PE than in the control. Mn, E2, and Cort showed negative associations with PE, while Cu, Zn, ß-hCG, and T demonstrated positive associations, as determined through logistic regression. Mn, Cu, and Zn displayed linear dose-response relationships with PE. Zn and Cu had high weights in the positive association model of mixed heavy metal exposure with PE. The mediation analysis revealed that serum E2, P, T, Cort, and Cort/Cor might be potential mediators of the association between heavy metals (Mn, Cu, and Zn) and PE.

Asunto(s)

Metales Pesados , Preeclampsia , Femenino , Metales Pesados/sangre , Humanos , Preeclampsia/sangre , Embarazo , Adulto , Estudios de Casos y Controles , Estradiol/sangre , Contaminantes Ambientales/sangre , Hormonas/sangre , Progesterona/sangre , Adulto Joven , Hidrocortisona/sangre , Exposición a Riesgos Ambientales , Testosterona/sangre

RESUMEN

The possible vulnerability of the male reproductive system to environmental pollutants such as air pollution necessitates a thorough investigation of the underlying mechanisms involved in the dysregulation of male reproductive function. The present study was designed to investigate the influence of the filtered fraction of diesel exhaust (predominantly comprising gases) on male reproductive function in Wistar rat model. Adult male rats were randomly assigned into three groups (n=8/group): Control (unexposed) group (CG-A), the Clean air group in WBE chamber (CAG-A), and Filtered diesel exhaust group in WBE chamber (FDG-A). The exposure protocol for CAG-A and FDG-A was 6 h/day x 5d/week x 6 weeks,evaluation of sperm parameters, testicular histopathology, quantification of hormones (testosterone, LH, FSH, 17ß-Estradiol, and prolactin), and GST levels were performed. Results showed that WBE to FDE leads to a significant decline in sperm concentration (p=0.008, CG-A vs FDG-A; p=0.014, CAG-A vs FDG-A), motility (p=0.008, CG-A vs FDG-A; p=0.029, CAG-A vs FDG-A), serum testosterone (p=0.024, CG-A vs FDG-A; p=0.007, CAG-A vs FDG-A), testicular testosterone (p=0.008, CG-A vs FDG-A; p=0.028, CAG-A vs FDG-A), 17ß-Estradiol (p=0.007, CG-A vs FDG-A), and GST levels (p=0.0002, CG-A vs FDG-A; p=0.0019, CAG-A vs FDG-A). These findings demonstrate the disruption of testosterone-estradiol balance in the intratesticular milieu without significant alterations in other principal pituitary hormones in adult rats exposed to FDE. The predominant presence of gaseous components in FDE can cause testicular damage due to oxidative imbalance. This underscores the causality of FDE exposure and impaired male reproductive outcomes.

Asunto(s)

Contaminantes Atmosféricos , Glutatión Transferasa , Ratas Wistar , Espermatozoides , Testículo , Emisiones de Vehículos , Animales , Masculino , Emisiones de Vehículos/toxicidad , Testículo/efectos de los fármacos , Testículo/patología , Testículo/metabolismo , Glutatión Transferasa/metabolismo , Espermatozoides/efectos de los fármacos , Contaminantes Atmosféricos/toxicidad , Motilidad Espermática/efectos de los fármacos , Testosterona/sangre , Recuento de Espermatozoides , Estradiol/sangre , Ratas , Hormona Folículo Estimulante/sangre , Hormona Luteinizante/sangre

RESUMEN

Previous studies have suggested that the effects of androgens on body weight (BW) and appetite are affected by the estrogen milieu in females; however, the mechanism underlying these effects remains unclear. We hypothesized that androgens may affect endogenous oxytocin (OT), which is a hypothalamic anorectic factor, and that these effects of androgens may be altered by the estrogen milieu in females. To investigate this hypothesis, in the present study, we examined the effects of testosterone on peripheral and central OT levels in ovariectomized female rats that did or did not receive estradiol supplementation. Ovariectomized female rats were randomly divided into non-estradiol-supplemented or estradiol-supplemented groups, and half of the rats in each group were concurrently supplemented with testosterone (i.e., rats were divided into four groups, n = 7 per each group). We also measured peripheral and central OT receptor (OTR) gene expression levels. As a result, we found that testosterone increased serum and hypothalamic OT levels and OT receptor mRNA levels in non-estradiol-supplemented rats, whereas it had no effects on these factors in estradiol-supplemented rats. In addition, testosterone reduced food intake, BW gain, and fat weight in non-estradiol-supplemented rats, whereas it did not have any effects on BW, appetite, or fat weight in estradiol-supplemented rats. These findings indicate that the effects of androgens on OT may be affected by the estrogen milieu, and elevated OT levels may be related to the blunting of appetite and prevention of obesity under estrogen-deficient conditions.

Asunto(s)

Estradiol , Hipotálamo , Ovariectomía , Oxitocina , Receptores de Oxitocina , Testosterona , Animales , Oxitocina/sangre , Oxitocina/farmacología , Femenino , Testosterona/sangre , Hipotálamo/metabolismo , Hipotálamo/efectos de los fármacos , Estradiol/sangre , Estradiol/farmacología , Ratas , Receptores de Oxitocina/metabolismo , Receptores de Oxitocina/genética , Estrógenos/sangre , Estrógenos/farmacología , Peso Corporal/efectos de los fármacos , Ingestión de Alimentos/efectos de los fármacos , Ingestión de Alimentos/fisiología , Ratas Sprague-Dawley , Apetito/efectos de los fármacos , ARN Mensajero/metabolismo

RESUMEN

Determining the female animal cycle is crucial in preclinical studies and animal husbandry. Changes in hormone levels during the cycle affect physiological responses, including altered contractility of the visceral smooth muscle. The study aimed to identify estrus and anestrus using smooth muscle electromyographic (SMEMG) measurements, in vivo fluorescent imaging (IVIS) and in vitro organ contractility of the uterus and cecum. The study involved sexually mature female Sprague-Dawley rats, aged 10-12 weeks. The rats received a daily injection of cetrorelix acetate solution for 7 days, while another group served as the control. The animals were subjected to gastrointestinal and myometrial SMEMG. The change in αvß3 integrin activity was measured with IVIS in the abdominal cavity. Contractility studies were performed in isolated organ baths using dissected uterus and cecum samples. Plasma samples were collected for hormone level measurements. A 3-fold increase in spontaneous contraction activity was detected in SMEMG measurements, while a significant decrease in αvß3 integrin was measured in the IVIS imaging procedure. Cetrorelix reduced the level of LH and the progesterone / estradiol ratio, increased the spontaneous activity of the cecum rings, and enhanced KCl-evoked contractions in the uterus. We found a significant change in the rate of SMEMG signals, indicating simultaneous increases in the contraction of the cecum and the non-pregnant uterus, as evidenced by isolated organ bath results. Fluorescence imaging showed high levels of uterine αvß3 integrin during the proestrus-estrus phase, but inhibiting the sexual cycle reduced fluorescence activity. Based on the results, the SMEMG and IVIS imaging methods are suitable for detecting estrus phase alterations in rats.

Asunto(s)

Electromiografía , Ciclo Estral , Ratas Sprague-Dawley , Animales , Femenino , Ratas , Ciclo Estral/efectos de los fármacos , Músculo Liso/efectos de los fármacos , Músculo Liso/fisiología , Progesterona/sangre , Contracción Muscular/efectos de los fármacos , Estro/fisiología , Útero/fisiología , Útero/efectos de los fármacos , Ciego/efectos de los fármacos , Integrina alfaVbeta3/metabolismo , Estradiol/sangre , Estradiol/análogos & derivados

RESUMEN

Background and Objectives: Fertility tracking apps and devices are now currently available, but urinary hormone levels lack accuracy and sensitivity in timing the start of the 6-day fertile window and the precise 24 h interval of transition from ovulation to the luteal phase. We hypothesized the serum hormones estradiol (E2) and progesterone (P) might be better biomarkers for these major ovulatory cycle events, using appropriate mathematical tools. Materials and Methods: Four women provided daily blood samples for serum E2, P, and LH (luteinizing hormone) levels throughout their entire ovulatory cycles, which were indexed to the first day of dominant follicle (DF) collapse (defined as Day 0) determined by transvaginal sonography; therefore, ovulation occurred in the 24 h interval of Day -1 (last day of maximum diameter DF) to Day 0. For comparison, a MiraTM fertility monitor was used to measure daily morning urinary LH (ULH), estrone-3-glucuronide (E3G), and pregnanediol-3-glucuronide (PDG) levels in three of these cycles. Results: There were more fluctuations in the MiraTM hormone levels compared to the serum levels. Previously described methods, the Fertility Indicator Equation (FIE) and Area Under the Curve (AUC) algorithm, were tested for identifying the start of the fertile window and the ovulation/luteal transition point using the day-specific hormone levels. The FIE with E2 levels predicted the start of the 6-day fertile window on Day -7 (two cycles) and Day -5 (two cycles), whereas no identifying signal was found with E3G. However, both pairs of (E2, P) and (E3G, PDG) levels with the AUC algorithm signaled the Day -1 to Day 0 ovulation/luteal transition interval in all cycles. Conclusions: serum E2 and (E2, P) were better biomarkers for signaling the start of the 6-day fertile window, but both MiraTM and serum hormone levels were successful in timing the [Day -1, Day 0] ovulatory/luteal transition interval. These results can presently be applied to urinary hormone monitors for fertility tracking and have implications for the direction of future fertility tracking technology.

Asunto(s)

Estradiol , Estrona , Hormona Luteinizante , Ovulación , Pregnanodiol , Progesterona , Humanos , Femenino , Estradiol/sangre , Estradiol/orina , Estradiol/análisis , Pregnanodiol/análogos & derivados , Pregnanodiol/orina , Pregnanodiol/sangre , Pregnanodiol/análisis , Progesterona/sangre , Progesterona/orina , Progesterona/análisis , Estrona/orina , Estrona/análogos & derivados , Estrona/sangre , Hormona Luteinizante/sangre , Hormona Luteinizante/orina , Adulto , Ovulación/fisiología , Biomarcadores/orina , Biomarcadores/sangre , Biomarcadores/análisis

RESUMEN

This study assessed morphometric traits of the ampulla of the oviducts in prepubertal gilts treated with chorionic gonadotropins. With the day of slaughter as D0, gilts were assigned to four treatments (n = 8 each): control (untreated), eCG (200 IU eCG on D3), eCG+hCG (1200 IU eCG on D6 plus 500 IU hCG on D3), and eCG+hCG+AI (the previous treatment plus artificial insemination on D1). Blood and ampullae samples were collected at slaughter. Serum progesterone concentrations were higher for gilts treated with hCG than for those in the eCG and control treatments (p < 0.001), but estradiol concentrations did not differ (p > 0.05). The epithelium, muscle and lumen areas and the inner and larger ampullae diameters did not differ across treatments (p > 0.05). Therefore, treatment with chorionic gonadotropins did not alter the ampullae morphometry of prepubertal gilts.

Asunto(s)

Gonadotropina Coriónica , Estradiol , Inseminación Artificial , Progesterona , Maduración Sexual , Animales , Femenino , Gonadotropina Coriónica/farmacología , Gonadotropina Coriónica/administración & dosificación , Progesterona/sangre , Progesterona/farmacología , Estradiol/sangre , Estradiol/farmacología , Maduración Sexual/efectos de los fármacos , Inseminación Artificial/veterinaria , Porcinos , Sus scrofa

RESUMEN

Research on sex differences has increased across various fields, including cancer and its treatment domains. Reports have indicated sex differences in cancer incidence, survival rates, and the efficacy of anticancer drugs. However, such reports are limited, and in-depth assessments of the underlying mechanisms are still in progress. Although various chemotherapeutic regimens are applicable for breast cancer treatment, reports have surfaced regarding weight gain in female patients undergoing fluorouracil, epirubicin, cyclophosphamide (FEC) or cyclophosphamide, methotrexate, fluorouracil (CMF) therapy. We hypothesized the potential of 5-fluorouracil (5-FU) in weight gain and sex-related differences. To address this, we conducted experiments in mice to confirm weight gain and sex differences following 5-FU administration, and elucidate the underlying mechanisms. Our findings revealed weight gain and increased food intake in female mice following 5-FU administration. Additionally, female mice receiving 5-FU exhibited increased norepinephrine and α1- and α2-adrenergic receptor expression, reduced estradiol levels, and increased ghrelin levels. These results indicate 5-FU administration-induced sex differences in weight gain and implicate increased food intake because of increased norepinephrine and α1- and α2-adrenergic receptor expression, reduced estradiol levels, and a subsequent increase in ghrelin levels, which contribute to weight gain in female patients undergoing CMF therapy.

Asunto(s)

Fluorouracilo , Ghrelina , Caracteres Sexuales , Aumento de Peso , Animales , Femenino , Aumento de Peso/efectos de los fármacos , Masculino , Antimetabolitos Antineoplásicos , Ingestión de Alimentos/efectos de los fármacos , Ratones , Estradiol/sangre , Norepinefrina/metabolismo , Ratones Endogámicos C57BL

RESUMEN

Background A transfeminine patient is a 79-year-old with past medical history significant for type 2 diabetes mellitus, hypertension, gender dysphoria, chronic kidney disease, dyslipidemia, total left hip replacement, and recent provoked deep venous thromboembolism (DVT). She was seen by a pharmacist in a primary care clinic after her discharge from a skilled nursing facility. The patient was experiencing symptoms of gender dysphoria after discontinuation of her estradiol in setting of her DVT. Assessment Her renal function was calculated to ensure she was on appropriate dosing of her medications. Because her DVT was provoked, providers determined she would require only 3 months of anticoagulation. Her laboratory test results showed a subtherapeutic estradiol level and her estradiol was restarted. Additionally, aspirin was being prescribed for primary prevention of atherosclerotic cardiovascular disease and was discontinued. Outcome She has significant improvement in her gender dysphoria symptoms with resuming her estradiol and now has a therapeutic estradiol level. She is tolerating her direct oral coagulant well and reports good quality of life. Conclusion When reviewing medications for patients it is important to take several factors into account, including dose, appropriate indication, and patient preference. Pharmacists play a key role, through collaboration with providers, in assessing these medication-specific factors. Estradiol was stopped in this patient because of her DVT, but given her DVT was provoked after a recent surgery, it was unlikely that estradiol was the cause of her clot. Weighing the risks and benefits for any patient is important when determining what medications are appropriate to continue. Additionally, calculating renal function appropriately in a gender-non-conforming patients ensures appropriate and safe dosing.

Asunto(s)

Anticoagulantes , Humanos , Anciano , Femenino , Anticoagulantes/uso terapéutico , Anticoagulantes/efectos adversos , Anticoagulantes/administración & dosificación , Disforia de Género/tratamiento farmacológico , Estradiol/uso terapéutico , Estradiol/sangre , Estradiol/administración & dosificación , Tromboembolia Venosa/prevención & control , Tromboembolia Venosa/tratamiento farmacológico , Aspirina/uso terapéutico , Aspirina/administración & dosificación , Calidad de Vida , Atención de Afirmación de Género