Changes In Estrogen Levels Research Articles

Comsol Multiphysics modeling of an electrochemical biosensor using carbon nanotubes for detecting urinary estrogen receptor

A class of steroid hormones known as estrogens is essential for the health of the heart, bones, and reproductive system. Changes in estrogen levels have been connected to several health problems, such as endocrine disorders, metabolic syndromes, and cancer. In pharmaceutical applications, environmental monitoring, and medical diagnostics, biosensors that measure estrogen levels are essential. This study models estrogen detection biosensors based on urine liquid, horseradish peroxidase biorecognition, and carbon nanotubes (CNT) using Comsol Multiphysics. This study demonstrates that most interactions happen at the upper boundary of the concave pillars put inside the box. Besides, it shows that the velocity has the highest value between the concave pillars inside the box. The results demonstrate that the number of interactions (absorption and adsorption) rises with increasing the concave pillars' area, affecting the biosensor output.

Estrogen deficiency in rats alters the expression and localization of redox proteins in the bone and bone marrow

Imbalances in bone formation/bone resorption ratio can occur under diverse conditions and diseases leading to an alteration of bone mineral density and strength. One of the most dramatic changes altering bone’s microarchitecture occurs under estrogen deficient conditions in humans and in other mammals. For instance, estrogen deficiency during menopause in women induces the formation and accumulation of reactive oxygen species (ROS) and a dysregulation of redox signaling. The bone and bone marrow are especially susceptible to the effects of oxidative stress and ROS. In tissues like the bone, cells are equipped with important defense systems to maintain homeostasis and to survive. Redox proteins of the thioredoxin family represent the most important protective system in cells that act against ROS and repair their intracellular effects. Redox proteins of the thioredoxin family comprise thioredoxins (Trxs), glutaredoxins (Grxs), and peroxiredoxins (Prxs). From all these protein classes, Prxs are the only ones that work as classical ROS scavengers being able to reduce hydrogen peroxide (H2O2), peroxynitrites and organic peroxides. Prxs are localized in different cellular compartments such as mitochondria (Prx3), cytosol and nucleus (Prx1 and Prx2), endoplasmic reticulum (Prx4), and peroxisomes (Prx5). We hypothesized that changes in estrogen levels may alter the expression and localization of Prxs in the bone and bone marrow. In this study, we analyzed the cellular localization and expression patterns of Prxs in the bone and bone marrow of rats as well as the effects of estrogens on their expression levels. We compared sham, ovariectomized, as well as ovariectomized/estrogen-replaced female rats of the same age. Western blot and immunohistochemistry revealed that all peroxiredoxins were abundantly expressed in different cell types of the bone and bone marrow such as osteocytes, chondrocytes, osteoclasts, bone lining cells, osteoblasts, and hematopoietic precursor cells. After ovariectomy, redox protein levels were significantly reduced in most cell types of the bone and bone marrow compartment. In addition to this, estrogen deficient animals showed increased levels of Prx1 in bone marrow supernatant suggesting a major redox dysregulation in this compartment. Estrogen replacement restored the levels of most redox proteins in the bone and bone marrow compartment and reduced the amount of extracellular Prx1. Based on these results, we conclude that estrogen deficiency negatively affects the ability of bone and bone marrow cells to maintain redox proteins at physiological levels. These results also reveal the widespread effects that are mediated by estrogen affecting different protein systems and tissues in the body. This work was funded by a Seed Discovery Grant (grant #3670920201102 to JG) from Long Island University. This is the full abstract presented at the American Physiology Summit 2024 meeting and is only available in HTML format. There are no additional versions or additional content available for this abstract. Physiology was not involved in the peer review process.

Mechanisms of development of postoperative pain syndrome in gynecological patients

Introduction. Despite all the advances in anesthesiology, postoperative pain syndrome remains a serious problem. The lowest satisfaction with postoperative pain relief was found among gynecological patients. For adequate anesthesia and relief of postoperative pain syndrome in gynecological patients, a clear understanding of the features of pain development is necessary. The purpose of the study: identification of mechanisms of development of postoperative pain syndrome in gynecological patients. Materials and methods. The search and analysis of literature sources in the databases Scholar Google, Cyberleninka, PubMed, by keywords: physiology of pain, postoperative pain in gynecology, pain syndrome after uterine surgery. Criteria for the inclusion of articles: compliance with the subject of the review and the relevance of the data. The search depth was 33 years. The review includes 59 literary sources. Results. The development of pain syndrome is influenced by pathophysiological mechanisms, such as: the formation of hyperalgesia zones, changes in estrogen levels, damage to nerve fibers and genetic factors. To assess the level of pain, specialized scales are used, such as YOURS, CRH, DN4 scale. Psychological factors have a great influence on the formation of postoperative pain. Namely, the level of anxiety and depression, the level of catastrophization of pain, coping strategies used, psychological stability. Conclusion. Postoperative pain syndrome in gynecological patients is associated not only with the physiological mechanisms of pain development, but also with psychoemotional factors. A multidisciplinary approach is needed to alleviate pain in gynecological patients, including not only adequate multimodal anesthesia and analgesia in the perioperative period, but also collaboration with clinical psychologists, psychotherapists, to evaluate and possible selection of psycho-social therapy.

Role of sex steroid hormone on hand grip strength and cognitive function in the elderly

The aging process is associated with changes in hormone levels. There is a noticeable change in estrogen levels in women, while in men, there is a change in testosterone levels. In the elderly, as a result of the aging process, changes in these hormone levels affect handgrip strength, and cognitive function. In both women and men, the function of several organs is influenced by sex steroid hormones, namely Oestrogen and androgens. There are two theories of steroid action mechanism on target cells, namely steroid hormone action mechanism genomically and non-genomically. The function and action mechanism of steroid hormone is important because it is the basis of the hormonal aspect for muscle mass, handgrip strength, and cognitive function. Due to the aging process, hormonal changes in the elderly are different compared to the previous period. This has consequences for changes in metabolic processes that affect the body’s condition, including changes in the composition of bones, muscles, and other tissues, such as the brain. In the aging process, it is important to pay attention to nutritional factors because they contribute to hormone levels that help maintain muscle mass, body mass index, hand grip strength, and cognitive function. In the brain, the sex steroid hormone has activating and organizational effects mediated by intracellular or transmembrane G-protein-coupled receptors. Articles published in English in the last 9 years (from 2014 to 2023) were retrieved from Science Direct, PubMed, Springer link, Oxford and Nature using relevant searching terms. The fact that testosterone bioavailability is predominated in the brain in relation to its activity and significant positive association with processing speed, sustained attention, and working memory in older men. To obtain a better quality of life for the elderly, nutritional factors must be considered to maintain optimal sex steroid hormone levels, hand grip strength, and cognitive function.

(108) The Vaginal and Vulvar Microbiomes of Post-menopausal Women with Lichen Sclerosus

Abstract Introduction Lichen sclerosus is a chronic, inflammatory disorder of the genital and extragenital skin that can lead to sexual dysfunction. The possible causes of this disorder include genetic predisposition, chronic irritation, infection and autoimmunity. Post-menopausal women are at higher risk for Lichen sclerosus. The vaginal microbiome is important for reproductive health and is known to shift after menopause to a Lactobacillus-depleted community due to changes in estrogen levels. However, little is known about the role of the vaginal and vulvar microbiome in Lichen sclerosus and its pathogenesis. Objective Here, we describe and compare microbial taxa between matching vaginal and vulvar samples collected from post-menopausal women with Lichen sclerosus. Methods Matching vaginal and vulvar swabs were collected from 27 women with Lichen sclerosus. Genomic DNA was extracted from swab eluates using the QIAGEN DNeasy Blood and Tissue kit and PCR amplification was performed on the V3-V4 regions of the 16s rRNA gene using 745R and 341F customized primers. 16S rRNA sequencing was performed using the Illumina MiSeq platform. Data was analyzed using the Mothur pipeline with alignment using SILVA, and ribosomal database project (RDP) for taxonomic classification. Sequencing analysis and plots were performed with R programming software packages: reshape2, ggplot, dplyr, compositions, and vegan. Statistical tests were performed on proportional and CLR-transformed data. Results Of the 27 vaginal samples, 51.9% (n=14) were polymicrobial, 22.2% (n=6) were Gardnerella co-dominant, 14.8% (n=4) were Lactobacillus dominant, 3.7% (n=1) was Atopobium co-dominant, 3.7% (n=1) was Corynebacterium dominant, and 3.7% (n=1) was Staphylococcus dominant. Of the 27 matching vulvar samples, 55.6% (n=15) were polymicrobial, 14.8% (n=4) Staphylococcus co-dominant, 7.4% (n=2) were Gardnerella co-dominant, 7.4% (n=2) Atopobium co-dominant, 7.4% (n=2) Lactobacillus dominant, and 7.4% (n=2) Lactobacillus/Bifidobacterium co-dominant. Principal coordinate analysis demonstrated that samples grouped based on the participant they were collected from suggesting similar beta diversity between vaginal and vulvar microbiomes within the same woman (Bray-Curtis distances, p =0.001, r2=0.833, perMANOVA). However, there were a number of bacteria (n=14) that significantly differed between the vaginal and vulvar compartments including Actinomyes, Corynebacterium, Campylobacter, Peptoniphilus, Staphylococcus, Ezakiella, Finegoldia, Porphyromonas, and Actinotignum which were increased in vulvar microbiome whereas Enhydrobacter, Lactobacillus, Micrococcus, Granulicatella and Bacillus were increased in the vaginal microbiome (p<0.05, paired t-test). Vulvar samples were also significantly more diverse than matching vaginal samples (Shannon’s H index, paired t-test, p=0.042). Conclusions Women with Lichen sclerosus have diverse, non-Lactobacillus dominant vaginal and vulvar microbiomes, which are considered less optimal for reproductive health. Understanding the role of these bacteria in Lichen sclerosus pathogenesis will be an important future investigation. Disclosure No

Interindividual differences contribute to variation in microbiota composition more than hormonal status: A prospective study.

Ovarian hormone deficiency is one of the main risk factors for osteoporosis and bone fractures in women, and these risks can be mitigated by menopausal hormone therapy. Recent evidence suggests that gut microbiota may link changes in estrogen levels and bone metabolism. This study was conducted to investigate the potential relationship between hormonal and bone changes induced by oophorectomy and subsequent hormonal therapy and shifts in gut microbiota composition. We collected 159 stool and blood samples in several intervals from 58 women, who underwent bilateral oophorectomy. Changes in fecal microbiota were assessed in paired samples collected from each woman before and after oophorectomy or the start of hormone therapy. Bacterial composition was determined by sequencing the 16S rRNA gene on Illumina MiSeq. Blood levels of estradiol, FSH, biomarkers of bone metabolism, and indices of low-grade inflammation were measured using laboratory analytical systems and commercial ELISA. Areal bone mineral density (BMD) of the lumbar spine, proximal femur, and femur neck was measured using dual-energy X-ray absorptiometry. We found no significant changes in gut microbiota composition 6 months after oophorectomy, despite major changes in hormone levels, BMD, and bone metabolism. A small decrease in bacterial diversity was apparent 18 months after surgery in taxonomy-aware metrics. Hormonal therapy after oophorectomy prevented bone loss but only marginally affected gut microbiota. There were no significant differences in β-diversity related to hormonal status, although several microbes (e.g., Lactococcus lactis) followed estrogen levels. Body mass index (BMI) was the most significantly associated with microbiota variance. Microbiota was not a suitable predictive factor for the state of bone metabolism. We conclude that neither the loss of estrogens due to oophorectomy nor their gain due to subsequent hormonal therapy is associated with a specific gut microbiota signature. Sources of variability in microbiota composition are more related to interindividual differences than hormonal status.

Preterm Birth and Breast Cancer Risk: A Systematic Review and Meta-Analysis.

Changes in estrogen levels during pregnancy as well as histologic changes in breast tissue can justify the relationship of preterm birth (PTB) and the risk of BC. Therefore, there is a hypothesis that the duration of pregnancy can be associated with BC, so the aim of this study was to find out whether PTB is a risk factor for BC. Published studies were located back to the earliest available publication date (1983), using the Medline/PubMed, Embase, Scopus, and Web of Science bibliographic databases. This review included the cohort or case control studies that assessed the association between PTB and BC. Pooled effect sizes with corresponding 95% confidence intervals (CI) were calculated using random-effects models. Thirteen studies including a total of 2,845,553 women were included in this meta-analysis. Pooled results suggested that PTB could increase the risk of BC (RR: 1.03, 95% CI: 1.00, 1.07; I2= 62.5%). The risk was significantly increased in women who delivered at 37-39 (RR: 1.03, 95% CI: 1.01, 1.06) and 26-31 weeks of gestation (RR: 1.25, 95% CI: 1.04, 1.47) compared to women who delivered at 40-41 weeks of gestation. A significant increment in the risk of BC was observed in primiparous (RR: 1.05, 95% CI: 1.01, 1.08) and women older than 45 years (RR = 1.12, 95% CI: 1.01, 1.24). There was no difference between other gestational age categories. Our findings add to evidence that short gestation pregnancies may increase the risk of BC, especially in primiparous and women older than 45 years. Considering the methodological weaknesses existed in included studies, minor clinical differences, and the complexity of the exact pathophysiology of PTB on BC, the precise position of PTB as a risk factor for BC in clinical practice is undetermined. Further studies are still needed.<br />.

Analysis of the oral microbiome during hormonal cycle and its alterations in menopausal women: the “AMICA” project

The maintenance of human health is dependent on a symbiotic relationship between humans and associated bacteria. The diversity and abundance of each habitat’s signature microbes vary widely among body areas and among them the oral microbiome plays a key role. Significant changes in the oral cavity, predominantly at salivary and periodontal level, have been associated with changes in estrogen levels. However, whether the oral microbiome is affected by hormonal level alterations is understudied. Hence the main objective pursued by AMICA project was to characterize the oral microbiome (saliva) in healthy women through: profiling studies using "omics" technologies (NMR-based metabolomics, targeted lipidomics by LC–MS, metagenomics by NGS); SinglePlex ELISA assays; glycosidase activity analyses and bioinformatic analysis. For this purpose, thirty-nine medically healthy women aged 26–77 years (19 with menstrual cycle and 20 in menopause) were recruited. Participants completed questionnaires assessing detailed medical and medication history and demographic characteristics. Plasmatic and salivary levels of sexual hormones were assessed (FSH, estradiol, LH and progesteron) at day 3 and 14 for women with menstrual cycle and only once for women in menopause. Salivary microbiome composition was assessed through meta-taxonomic 16S sequencing and overall, the salivary microbiome of most women remained relatively stable throughout the menstrual cycle and in menopause. Targeted lipidomics and untargeted metabolomics profiling were assessed through the use of LC–MS and NMR spectroscopy technologies, respectively and significant changes in terms of metabolites were identified in saliva of post-menopausal women in comparison to cycle. Moreover, glycosyl hydrolase activities were screened and showed that the β-D-hexosaminidase activity was the most present among those analyzed. Although this study has not identified significant alterations in the composition of the oral microbiome, multiomics analysis have revealed a strong correlation between 2-AG and α-mannosidase. In conclusion, the use of a multidisciplinary approach to investigate the oral microbiome of healthy women provided some indication about microbiome-derived predictive biomarkers that could be used in the future for developing new strategies to help to re-establish the correct hormonal balance in post-menopausal women.

Environmental Enrichment and Estrogen Upregulate Beta-Hydroxybutyrate Underlying Functional Improvement.

Environmental enrichment (EE) is a promising therapeutic strategy in improving metabolic and neuronal responses, especially due to its non-invasive nature. However, the exact mechanism underlying the sex-differential effects remains unclear. The aim of the current study was to investigate the effects of EE on metabolism, body composition, and behavioral phenotype based on sex. Long-term exposure to EE for 8 weeks induced metabolic changes and fat reduction. In response to the change in metabolism, the level of βHB were influenced by sex and EE possibly in accordance to the phases of estrogen cycle. The expression of β-hydroxybutyrate (βHB)-related genes and proteins such as monocarboxylate transporters, histone deacetylases (HDAC), and brain-derived neurotrophic factor (BDNF) were significantly regulated. In cerebral cortex and hippocampus, EE resulted in a significant increase in the level of βHB and a significant reduction in HDAC, consequently enhancing BDNF expression. Moreover, EE exerted significant effects on motor and cognitive behaviors, indicating a significant functional improvement in female mice under the condition that asserts the influence of estrogen cycle. Using an ovariectomized mice model, the effects of EE and estrogen treatment proved the hypothesis that EE upregulates β-hydroxybutyrate and BDNF underlying functional improvement in female mice. The above findings demonstrate that long-term exposure to EE can possibly alter metabolism by increasing the level of βHB, regulate the expression of βHB-related proteins, and improve behavioral function as reflected by motor and cognitive presentation following the changes in estrogen level. This finding may lead to a marked improvement in metabolism and neuroplasticity by EE and estrogen level.

The Biological Effects of 3D Resins Used in Orthodontics: A Systematic Review

Three-dimensional (3D) resin medical-dental devices have been increasingly used in recent years after the emergence of digital technologies. In Orthodontics, therapies with aligners have gained popularity, mainly due to the aggressive promotion policies developed by the industry. However, their systemic effects are largely unknown, with few studies evaluating the systemic toxicity of these materials. The release of bisphenol A and other residual monomers have cytotoxic, genotoxic, and estrogenic effects. This systematic review aims to analyze the release of toxic substances from 3D resins used in Orthodontics and their toxic systemic effects systematically. The PICO question asked was, “Does the use of 3D resins in orthodontic devices induce cytotoxic effects or changes in estrogen levels?”. The search was carried out in several databases and according to PRISMA guidelines. In vitro, in vivo, and clinical studies were included. The in vitro studies’ risk of bias was assessed using the guidelines for the reporting of pre-clinical studies on dental materials by Faggion Jr. For the in vivo studies, the SYRCLE risk of bias tool was used, and for the clinical studies, the Cochrane tool. A total of 400 articles retrieved from the databases were initially scrutinized. Fourteen articles were included for qualitative analysis. The risk of bias was considered medium to high. Cytotoxic effects or estrogen levels cannot be confirmed based on the limited preliminary evidence given by in vitro studies. Evidence of the release of bisphenol A and other monomers from 3D resin devices, either in vitro or clinical studies, remains ambiguous. The few robust results in the current literature demonstrate the absolute need for further studies, especially given the possible implications for the young patient’s fertility, which constitutes one of the largest groups of patients using these orthodontic devices.

Auditory-verbal memory function of women during the menstruation and ovulation periods

Background and Aim: Auditory-verbal mem­ory (AVM) is the ability to learn, retain, and recall syllables and words. Memory has a strong relationship with the nervous and endocrine systems in humans. Changes in estrogen levels occur naturally at short (menstrual period) and long (pregnancy, menopause, and maturity) peri­ods. Changes in estrogen levels are likely to affect memory function. This study aimed to evaluate the effects of hormone fluctuations on the AVM of women. Methods: This cross-sectional study with a pretest/posttest design was conducted on 25 women aged 40−49 years with normal hearing and normal menstrual cycles of 28 ± 4 days, who were selected using a convenience sampling method. They were evaluated using two Persian versions of Rey Auditory-Verbal Learning Test (RAVLT). This test was performed twice and at two different menstrual periods (2-5 and 14−16 days). Results: A significant correlation was observed between the mean of total recall score, recall score after interference, and delayed recall score at two different periods (p &lt; 0.01). The scores of women in three areas on days 14−16 of the menstrual cycle were higher than on days 2−5. Conclusion: Women’s RAVLT scores on days 14−16 of the menstrual cycle are higher than on days 2−5, indicating the effect of hormonal fluc­tuations on their AVM function. Therefore, it is necessary to consider the changes in women’s AVM in different days of the menstrual cycle. Keywords: Auditory-verbal working memory; Rey learning test; menstrual cycle

Fragile queen mole rats

Development Honey bees are social animals, with populations consisting of castes of siblings with defined divisions of labor and matching phenotypes. Drones, queens, and workers have specific jobs within the hive for reproduction, rearing the brood, or gathering pollen and nectar. The Damaraland mole rat ( Fukomys damarensis ) is similarly social. Groups of mole rats consist of a single breeding pair and their offspring, which divide the labor of locating food, burrowing, nest building, and caring for offspring. Knowing that, similar to honey bees, mole rats show phenotypic differences depending on caste, Johnston et al. investigated the molecular basis for these transformations. If a female mole rat is experimentally induced to become a breeding “queen,” her vertebral column lengthens. The authors found that transitions in breeding status were accompanied by skeletal gene-regulatory changes that endowed major skeletal remodeling. In addition to a lengthening of the lumbar vertebrae, gene expression analysis indicated increased bone resorption and changes in estrogen levels in queens that reduced long bone growth and femur density. These morphological costs are thus a trade-off between fertility and bone fragility. eLife 10 , e65760 (2021).

The administration of UltraMimi Kids® UHT milk by PT. Ultrajaya Milk Industry increased body weight and did not increase estrogen hormone level in female albino rat (Rattus norvegicus) Wistar strain

Background: This study aimed to prove that administration of UltraMimi Kids® UHT milk by PT. Ultrajaya Milk Industry increased body weight and estrogen levels in female albino rat (Rattus norvegicus) Wistar strain.&#x0D; Methods: This research was a true experimental with randomized pretest-posttest control group design. The research subjects were 18-female-albino-rats aged 21-days, weight 25-28 grams, divided into 2-groups: control group which was given standard food and sugar solution (0.36 grams of sugar dissolved in 1 ml aquadest), and intervention group which was given standard food and UltraMimi Kids® UHT milk 1 ml for the first 14-days and upgraded to 2 ml for the rest 14-days, given three times a day for 28-days. The rats body weight and estrogen levels were measured using Tanita-KD-192-digital-scales and ELISA method.&#x0D; Results: The control group had an increased body weight (26.2±1.2-66.1±5.94 grams; p&lt;0,001), but there was no change in estrogen levels (38.59±11.19-44.59±5.42 ng/L; p=0.217). Whereas, the intervention group had an increased body weight (25.77±0.83-85.33±10.24 grams; p=0.008), but there was no change in estrogen levels (39.91±3.73-42.66±2.24 ng/L; p=0.066). After 28-days of intervention (posttest), it was found that the mean of body weight in the intervention group was higher than the control group (p&lt;0.001), there was no significant difference in estrogen levels (p=0.339) and food intake from the remaining feed in both groups (0.51±0.81-0.36±0.55 grams; p=0.823).&#x0D; Conclusion: The administration of UltraMimi Kids® UHT milk by PT. Ultrajaya Milk Industry increased body weight and did not increase estrogen hormone level in female albino rat (Rattus norvegicus) Wistar strain.

Menopause

The female reproductive system matures in a continuous, natural process from menarche to menopause as the finite numbers of oocytes produced during fetal development are gradually lost to ovulation and senescence. Menopause is defined as the permanent cessation of menses; by convention, the diagnosis of menopause is not made until the individual has had 12 months of amenorrhea. Menopause is thus characterized by the menstrual changes that reflect oocyte depletion and subsequent changes in ovarian hormone production. However, hormonal changes, rather than the cessation of menstruation itself, cause the manifestations that occur around the time of menopause. Therefore, a woman who has undergone a hysterectomy but who retains her ovaries can experience normal menopausal symptoms as oocyte depletion leads to changes in estrogen levels, even though cessation of menstruation occurred with surgery. This review covers definitions, natural menopause, menopausal transition and postmenopausal symptom management, and premature ovarian insufficiency. Figures show stages of reproductive aging, serum concentrations of hormones during menopausal transition and postmenopause, hormonal changes associated with reproductive aging, symptoms of menopausal transition and menopause, treatment algorithm(s), and Women’s Health Initiative findings: risks and benefits of estrogen alone and estrogen plus progestin by age group: 50 to 59, 60 to 69, and 70 to 79 years. Tables list target tissues, physical manifestations, and menopausal symptoms; selective estrogen receptor modulators used in postmenopausal women; differential diagnosis and evaluation of common menopausal symptoms; estrogen doses; progestogen dosing for endometrial protection; nonhormonal pharmaceutical hot flash therapies; and pharmacologic therapy for genitourinary atrophy. This review contains 6 figures, 8 tables, and 122 references.

Menopause

The female reproductive system matures in a continuous, natural process from menarche to menopause as the finite numbers of oocytes produced during fetal development are gradually lost to ovulation and senescence. Menopause is defined as the permanent cessation of menses; by convention, the diagnosis of menopause is not made until the individual has had 12 months of amenorrhea. Menopause is thus characterized by the menstrual changes that reflect oocyte depletion and subsequent changes in ovarian hormone production. However, hormonal changes, rather than the cessation of menstruation itself, cause the manifestations that occur around the time of menopause. Therefore, a woman who has undergone a hysterectomy but who retains her ovaries can experience normal menopausal symptoms as oocyte depletion leads to changes in estrogen levels, even though cessation of menstruation occurred with surgery. This review covers definitions, natural menopause, menopausal transition and postmenopausal symptom management, and premature ovarian insufficiency. Figures show stages of reproductive aging, serum concentrations of hormones during menopausal transition and postmenopause, hormonal changes associated with reproductive aging, symptoms of menopausal transition and menopause, treatment algorithm(s), and Women’s Health Initiative findings: risks and benefits of estrogen alone and estrogen plus progestin by age group: 50 to 59, 60 to 69, and 70 to 79 years. Tables list target tissues, physical manifestations, and menopausal symptoms; selective estrogen receptor modulators used in postmenopausal women; differential diagnosis and evaluation of common menopausal symptoms; estrogen doses; progestogen dosing for endometrial protection; nonhormonal pharmaceutical hot flash therapies; and pharmacologic therapy for genitourinary atrophy. This review contains 6 figures, 8 tables, and 122 references.

Menopause

The female reproductive system matures in a continuous, natural process from menarche to menopause as the finite numbers of oocytes produced during fetal development are gradually lost to ovulation and senescence. Menopause is defined as the permanent cessation of menses; by convention, the diagnosis of menopause is not made until the individual has had 12 months of amenorrhea. Menopause is thus characterized by the menstrual changes that reflect oocyte depletion and subsequent changes in ovarian hormone production. However, hormonal changes, rather than the cessation of menstruation itself, cause the manifestations that occur around the time of menopause. Therefore, a woman who has undergone a hysterectomy but who retains her ovaries can experience normal menopausal symptoms as oocyte depletion leads to changes in estrogen levels, even though cessation of menstruation occurred with surgery. This review covers definitions, natural menopause, menopausal transition and postmenopausal symptom management, and premature ovarian insufficiency. Figures show stages of reproductive aging, serum concentrations of hormones during menopausal transition and postmenopause, hormonal changes associated with reproductive aging, symptoms of menopausal transition and menopause, treatment algorithm(s), and Women’s Health Initiative findings: risks and benefits of estrogen alone and estrogen plus progestin by age group: 50 to 59, 60 to 69, and 70 to 79 years. Tables list target tissues, physical manifestations, and menopausal symptoms; selective estrogen receptor modulators used in postmenopausal women; differential diagnosis and evaluation of common menopausal symptoms; estrogen doses; progestogen dosing for endometrial protection; nonhormonal pharmaceutical hot flash therapies; and pharmacologic therapy for genitourinary atrophy. This review contains 6 figures, 8 tables, and 122 references.

Pengaruh konsumsi susu kedelai terhadap amenorhoe sekunder pada remaja putri periode late adolescence di Dayah Insan Qur’ani Aceh Besar

Secondary amenorrhea is a menstrual cycle that occurs in women who have menstruated but does not increase menstruation within 3-6 months. The key to the menstrual cycle depends on changes in estrogen levels. Soybeans are the main source of phytoestrogens which play a role in stabilizing estrogen levels in the body, whereas 250 ml of soy milk contains 40 mg of phytoestrogens. The purpose of this study was to determine how to consume soy milk against changes in secondary amenorrhea in young women. This research is a descriptive-analytic conducted cross-sectionally. This type of research is an easy experiment with a non-randomized posttest group design. The research sample is young women who change secondary amenorrhea which is grouped into 2 groups of 17 people each. Data collection was conducted from August 2 to October 19, 2016. The statistical test used was the Wilcoxon test. The results showed that normal menstruation occurs in secondary amenorrhea adolescents after being given soy milk which is equal to 82.4% while in adolescents who are given sweetened condensed milk only by 29,4%. Statistical tests show the results of p= 0,002. The conclusion, there is a change in secondary amenorrhea between the samples gave soy milk, and those given sweetened condensed milk. Suggestions, it is necessary to provide a daily menu for students so that the menstrual cycle is maintained.

Sleep and Methylation of Estrogen Receptor Genes, ESR1 and GPER, in Healthy Middle-Aged and Older Women: Findings from the Women 40+ Healthy Aging Study.

PurposeSleep problems in middle-aged and older women are very common and have been associated with menopause-related changes in estrogen levels. However, not all women experience sleep problems as they enter perimenopause, and epigenetic mechanisms might contribute to the differences in sleep quality within this population. In this study, we hypothesized that increased methylation of two estrogen receptor (ER) genes (ESR1 and GPER) would be associated with increased sleep problems in healthy pre-, peri-, and postmenopausal women, either directly or indirectly through the experience of vasomotor symptoms (VMS).Materials and MethodsIn 130 healthy women aged 40–73 years, we assessed DNA methylation from dried blood spots (DBS). Women rated their sleep quality using the Pittsburgh Sleep Quality Index (PSQI), and VMS using the Menopause Rating Scale (MRS).ResultsHigher percentage methylation of ESR1 was associated with increased sleep problems, mediated by VMS, even after controlling for age, menopausal status, body mass index, estradiol levels, depressive symptoms, and caffeine consumption. There was no significant association between GPER methylation and either sleep problems or VMS.ConclusionThe study findings support an association between increased ESR1 methylation and sleep problems through increased VMS among healthy women aged 40–73 years.

Biomimetic and estrogenic fibers promote tissue repair in mice and human skin via estrogen receptor β

The dynamic changes in estrogen levels throughout aging and during the menstrual cycle influence wound healing. Elevated estrogen levels during the pre-ovulation phase accelerate tissue repair, whereas reduced estrogen levels in post-menopausal women lead to slow healing. Although previous reports have shown that estrogen may potentiate healing by triggering the estrogen receptor (ER)-β signaling pathway, its binding to ER-α has been associated with severe collateral effects and has therefore limited its use as a therapeutic agent. To this end, soy phytoestrogens, which preferentially bind to the ER-β, are currently being explored as a safer therapeutic alternative to estrogen. However, the development and evaluation of phytoestrogen-based materials as local ER-β modulators remains largely unexplored. Here, we engineered biomimetic and estrogenic nanofiber wound dressings built from soy protein isolate (SPI) and hyaluronic acid (HA) using immersion rotary jet spinning. These engineered scaffolds were shown to successfully recapitulate the native dermal architecture, while delivering an ER-β-triggering phytoestrogen (genistein). When tested in ovariectomized mouse and ex vivo human skin tissues, HA/SPI scaffolds outperformed controls (no treatment or HA only scaffolds) towards promoting cutaneous tissue repair. These improved healing outcomes were prevented when the ER-β pathway was genetically or chemically inhibited. Our findings suggest that estrogenic fibrous scaffolds facilitate skin repair by ER-β activation.

Role of Estradiol in the Expression of Genes Involved in Serotonin Neurotransmission: Implications for Female Depression.

Background: In women, changes in estrogen levels may increase the incidence and/or symptomatology of de-pression and affect the response to antidepressant treatments. Estrogen therapy in females may provide some mood benefits as a single treatment or might augment clinical response to antidepressants that inhibit serotonin reuptake.Objective: We analyzed the mechanisms of estradiol action involved in the regulation of gene expression that modulates sero-tonin neurotransmission implicated in depression.Method: Publications were identified by a literature search on PubMed.Results: The participation of estradiol in depression may include regulation of the expression of tryptophan hydroxylase-2, monoamine oxidase A and B, serotonin transporter and serotonin-1A receptor. This effect is mediated by estradiol binding to intracellular estrogen receptor that interacts with estrogen response elements in the promoter sequences of tryptophan hy-droxylase-2, serotonin transporter and monoamine oxidase-B. In addition to directly binding deoxyribonucleic acid, estrogen receptor can tether to other transcription factors, including activator protein 1, specificity protein 1, CCAAT/enhancer bind-ing protein β and nuclear factor kappa B to regulate gene promoters that lack estrogen response elements, such as monoamine oxidase-A and serotonin 1A receptor.Conclusion: Estradiol increases tryptophan hydroxylase-2 and serotonin transporter expression and decreases the expres-sion of serotonin 1A receptor and monoamine oxidase A and B through the interaction with its intracellular receptors. The understanding of molecular mechanisms of estradiol regulation on the protein expression that modulates serotonin neuro-transmission will be helpful for the development of new and more effective treatment for women with depression.