Serum E2 Research Articles

Production of XX neo-male mandarin fish, Siniperca chuatsi, after sexual differentiation by oral administration of 17α-methyltestosterone

A well-known fact about mandarin fish (Siniperca chuatsi) is that females grow faster than males. Mandarin fish that have all-female populations have economic advantages, but traditional neo-male fish are difficult to produce. In this study, indirect feeding of 500 ​mg/kg 17α-methyltestosterone (MT) to XX mandarin fish (60 dpf, days post fertilization) with completely differentiated ovaries induced secondary sex reversal. At 40 days after MT treatment, 14.7% of mandarin fish with complete reversal was produced, which showed for the first time that XX mandarin fishes with differentiated ovaries still have potentially bisexual germ cells and the plasticity of sex reversal. In the MT treatment group, there was no significant difference in survival compared to the control group. The body weight of the MT treatment group was significantly lower than that of the control group 40 days after treatment (dat) (P ​< ​0.05). During MT treatment, serum 11-KT and T concentrations increased and serum E2 concentration decreased in the MT treatment group, but there was no significant difference in hormone levels between the MT treatment group and the control group. A masculinization of mandarin fish was also confirmed by the expression patterns of sex-specific genes sox9, dmrt1, cyp19a1a and foxl2. A significant amount of sox9 and dmrt1 was expressed in the fish gonads of the MT treatment group, whereas cyp19a1a and foxl2 were minimally expressed in the fish gonads.

P079Etonogestrel contraceptive implant users can experience breakthrough ovulation with only two weeks of exposure to a strong cyp3a inducer

<h3>Objectives</h3> Rifampin is a strong CYP3A inducer and the gold standard for evaluating CYP3A-mediated drug-drug interactions per the US Food and Drug Administration. We hypothesized that even a short course (two weeks) of exposure would lead to breakthrough ovulation-mediated changes in endogenous estradiol (E2) and progesterone (P4) concentrations among etonogestrel (ENG) implant users. <h3>Methods</h3> We enrolled healthy people using ENG implants for 12–36 months. We measured baseline serum concentrations of E2 and P4 as surrogate biomarkers for ovulation suppression using clinical chemiluminescent immunoassays. After two weeks of rifampin 600 mg daily, we repeated E2 and P4 measurements. We determined breakthrough ovulation based on pre-exposure P4 3.0ng/mL with concurrent rise in post-treatment E2. <h3>Results</h3> Fifteen participants completed all study procedures. Participants' median age was 28.2 (range, 21.8–34.1), median BMI was 25.2 kg/m2 (range, 18.9–37.3), and median duration of implant use was 22 months (range, 12–32). At baseline, median E2 concentrations were 73 pg/mL (range, 32–686) and median P4 concentrations were 0.3 ng/mL (range, 0.2–6.1). After concomitant rifampin, median E2 concentrations were 201 pg/mL (range, 59–951) and median P4 concentrations were 0.4 ng/mL (range, 0.2–15.8). Serum E2 concentrations significantly increased with rifampin exposure (p=0.003, paired Wilcoxon signed rank test), but the increases in serum P4 concentrations were not statistically significant (p=0.185). Three participants (20%) experienced breakthrough ovulation with the following P4 changes: 0.3>5.0, 0.8>7.3, 0.5>15.8 (pre>post; ng/mL). <h3>Conclusions</h3> With only a short exposure to a strong CYP3A inducer, ENG implant users experienced clinically significant changes in hormone biomarkers indicative of waning follicular development and ovulation suppression.

The role of peak serum estradiol level in the prevention of multiple pregnancies in gonadotropin stimulated intrauterine insemination cycles

The objective was to assess whether the measurement of serum estradiol (E2) level on trigger day in controlled ovarian stimulation with intrauterine insemination (COS-IUI) cycles helps lower the multiple pregnancy (MP) rate. We performed a unicentric observational study. We included all patients who underwent COS-IUI and had a subsequent clinical pregnancy (CP) between 2011 and 2019. Our main outcome measure was the area under Receiver-Operating Characteristic (ROC) curve. We included 455 clinical pregnancies (CP) obtained from 3387 COS-IUI cycles: 418 singletons, 35 twins, and 2 triplets. The CP, MP, and live birth rates were respectively 13.4%, 8.1% and 10.8%. The area under ROC curve for peak serum E2 was 0.60 (0.52–0.69). The mean E2 level was comparable between singletons and MP (260.1 ± 156.1 pg/mL vs. 293.0 ± 133.4 pg/mL, p = 0.21, respectively). Univariate and multivariate logistic regression analysis showed that E2 level was not predictive of MP rate (aOR: 1.13 (0.93–1.37) and 1.06 (0.85–1.32), respectively). Our study shows that, when strict cancelation criteria based on the woman’s age and follicular response on ultrasound are applied, the measurement of peak serum E2 levels does not help reduce the risk of MP in COS-IUI cycles.

Chromosomal polymorphisms have no negative effect on reproductive outcomes after IVF/ICSI-ET/FET

The present study aimed to explore whether chromosomal polymorphisms (CPs) have negative effects on reproductive outcomes of in vitro fertilization/intracytoplasmic sperm injection-embryo transfer (IVF/ICSI-ET)/frozen-thawing embryo transfer (FET)? We conducted a retrospective study consisting of 21,867 assisted reproductive technology treatment cycles, among which, fresh embryo transfer cycles accounted for 10,400, and the rest were FET cycles. According to karyotype of CPs, the former was grouped as: group 1 (male carrier, n = 425), group 2 (female carrier, n = 262), and group 3 (couple without CPs, n = 9713). Accordingly, FET cycles were divided into 3 groups: group 4 (male carrier, n = 298), group 5 (female carrier, n = 311), and group 6 (couple without CPs, n = 10,858). The embryo implantation rate (IR), clinical pregnancy rate (CPR), live birth rate (LBR), and early miscarriage rate (EMR) were compared among the groups. In fresh embryo transfer cycles after IVF/ICSI, there were no significant differences in the infertility duration, BMI, basal FSH, no. of oocyte, no. of 2PN, endometrial thickness on trigger day, serum E2, P, and LH level on trigger day (P > 0.05). The female age, no. of 2PN embryo cleavage, top-quality embryo, and no. of embryo transferred were significantly different among groups (P < 0.05). The IR was 38.8%, 36.2%, and 34.0% in groups 1, 2, and 3, respectively. The CPR was 55.1%, 52.3%, and 49.7%, respectively. The LBR was 36.9%, 37.4%, and 36.4%, respectively. The CPR and LBR showed no significant differences among groups. The IR was lower and the EMR was higher in group 3 than those of groups 1 and 2. Binary logistic regression analysis indicated that female age, no. of embryo transferred, EMT, LH, and P on the trigger day were independently factors associated with CPR. Besides, no. of embryo transferred, and EMT on trigger day were associated with LBR, while the CPs was not related with CPR and LBR after IVF/ICSI-ET. In FET cycles, the infertility duration was similar (P > 0.05), but the female age, BMI, no. of embryo transferred were significantly different among groups (P > 0.05). The IR was 24.3%, 23.6% and 22.3% in group 4, 5, and 6, receptivity. The CPR was 31.8%, 30.9%, and 30.0%, the LBR was 23.8%,26.3%, and 23.8%, while the EMR was 12.6%, 13.1%, 14.4%, respectively. The IR, CPR, EMR, and LBR showed no significant differences among groups (P > 0.05). Binary logistic regression analysis indicated that female age, infertility duration, and no. of embryo transferred were independently factors affecting CPR and LBR after FET. The CPs were not associated with CPR and LBR after FET. The results suggested that uniparental carrying of CPs have no effects on the reproductive outcomes after IVF/ICSI-ET/FET. However, it is not clear whether both parents carrying CPs would affect pregnancy outcome.

Hyperestrogenism is associated with sexual function impairment in men – findings from a cross-sectional, real-life study

High estrogens levels have been associated with higher rates of heart attacks, strokes, and prostate cancer. Moreover, hyperestrogenism is believed to be harmful to male sexuality. We aimed to investigate the impact of hyperestrogenism on sexual functioning in the real-life setting. Data from 481 men seeking first medical help for new-onset ED at a single andrology centre were analyzed. Comorbidities were scored with the Charlson Comorbidity Index (CCI). All patients completed the International Index of Erectile Function (IIEF) categorized according to Cappelleri's criteria. Circulating hormones were measured in every patient. Hyperestrogenism was defined as estrogen (E2) levels >42.6 pg/mL (Tan RS et al. 2015). Descriptive statistics and logistic/linear regression models tested the association between hyperestrogenism and IIEF scores. Overall, 88 (18.3%) patients had serum estrogen levels suggestive for hyperestrogenism. Men with hyperestrogenism were older [median (IQR) 46 (34-58) vs. 44 (32-55) years; p<0.001], had more comorbidities [CCI≥2: 18 (20.5%) vs. 28 (7.1%); p<0.001] and higher serum testosterone (TT) levels [5.4 (4.2-7.3) vs. 4.3 (3.1-5.7); p=0.02] than those with normal E2 values. A higher rate of severe ED was found in men with elevated E2 levels (48.9% vs. 30%; p=0.02). Moreover, the IIEF-orgasmic function (IIEF-OF) domain was lower in ED men with hyperestrogenism than those with normal E2 values [6 (3-10) vs. 9 (6-10), p=0.03]. Serum E2 levels were correlated with TT levels (rho 0.25, p<0.001), but negatively correlated with IIEF-OF scores (rho -0.17, p=0.005) and IIEF-EF scores (rho -0.32, p<0.001) (Figure 1). At multivariable logistic regression analysis, hyperestrogenism (OR 2.37, p=0.03) was associated with severe ED after accounting for age, BMI, CCI and serum T values. One out of five men seeking first medical help for ED showed elevated serum E2 values in the real-life setting. Hyperestrogenism was associated with orgasmic function impairment and higher severity of ED. None

RF03 | PMON300 Sex Hormones, Sex Hormone Binding Globulin, and Gonadotropins in Men with Inguinal Hernias

Abstract Background More than 1 in 4 men will undergo inguinal hernia repair during their lifetime. Age is a significant risk factor for inguinal hernias in men with increased incidence in older age. Sex steroid hormone changes are observed with a higher ratio of serum estradiol (E2) to testosterone (T) as men age. We previously demonstrated that a shift from androgen to estrogen action caused inguinal hernia formation in a transgenic male mouse model with increased estrogen action in lower abdominal muscle tissues. However, age-related changes in serum E2 levels in men are conflicting, as some studies have reported increases but others have noted unchanged or even decreased E2 levels with advancing age. Method: This study was performed on 212 men with inguinal hernias, aged 20 to 90 years, stratified at 10-year intervals of age (20-30, 31-40, 41-50, 51-60, 61-70, 71-80, 81-90 years). We assessed total T (TT), total E2 (TE2), dehydroepiandrosterone (DHEA), sex hormone-binding globulin (SHBG), and gonadotropins (FSH and LH). Body mass index (BMI) was calculated using height and weight. Results The BMI distribution was balanced for men with inguinal hernias among all age groups. TE2 was low in 23.7%, normal in 65.8%, and high in 10.5% of men 50 years or younger. In contrast, the percentage of patients with high TE2 was increased 2.6-fold in men over the age of 50 (20.1% in low, 52.3% in normal, and 27.6% in high). TT was normal in all men 50 years and younger but was low in 3.5% and normal in 96.5% of men over the age of 50. We found that serum TE2 levels and the ratio of TE2/TT positively correlated with age (p=0.001). In addition, serum TE2 levels were significantly higher in the advanced age groups (71-80 and 81-90 years) than in the young age group (20-40 years). Serum TT levels decreased but did not reach significance in the advanced age groups compared to the young age group. Remarkably the ratio of E2/T was higher in the advanced age groups than in the young age group (20-30 years). Serum DHEA levels in men over the age of 50 were significantly higher than in men 50 years or younger. SHBG levels were higher in men over 70 years than men 50 years or younger (p&amp;lt; 0.01). Serum levels of FSH and LH in men over 60 years were 3-fold greater than in men 50 or younger (p&amp;lt;0.01). Conclusions Our findings suggest a correlation of increased estrogen action in the formation of inguinal hernias at an advanced age. This points to a potential utilization of inhibitors of estrogen synthetase or estrogen antagonists in a subset of elderly inguinal hernia patients with increased circulating estrogen as a non-surgical intervention. Presentation: Saturday, June 11, 2022 1:42 p.m. - 1:47 p.m., Monday, June 13, 2022 12:30 p.m. - 2:30 p.m.

Early pregnancy exposure to beta-cypermethrin compromises endometrial decidualisation in mice via downregulation of cyclin D3, CDK4/6, and p21.

Beta-cypermethrin (β-CYP) is a highly effective broad-spectrum insecticide that can potentially affect female reproduction. However, little is known about the effect of β-CYP on uterine decidualisation, which is a vital process by which the uterus provides a suitable microenvironment for pregnancy maintenance. Therefore, we focused on the effect and mechanism of β-CYP on endometrial decidualisation during early pregnancy in mice. The results indicated that the expression levels of HOXA10, BMP2, and IGFBP1 was significantly downregulated in the decidual tissue and primary endometrial stromal cells of pregnant and pseudopregnant mice following β-CYP treatment. Serum E2 concentration was significantly increased, whereas P4 concentration and oestrogen receptor (ERα) and progesterone receptor (PRA) expression were significantly downregulated following β-CYP exposure. The number of polyploid decidual cells was lower in the β-CYP-treated group. Furthermore, β-CYP significantly downregulated the protein expression levels of CDK4 and CDK6, and the mRNA expression levels of cyclin D3 and p21. The number of foetuses per female in the first litter was markedly reduced following exposure to β-CYP. In summary, early pregnancy exposure to β-CYP may result in defective endometrial decidualisation via compromised proliferation of uterine stromal cells and reduced expressions of cyclin D3, CDK4/6, and p21 in mice.

IMPACT OF ESTRADIOL AND ENDOMETRIAL THICKNESS IN FROZEN EMBRYO TRANSFER CYCLES BASED ON PREPARATION PROTOCOL

The value of obtaining late-proliferative phase serum E2 (estradiol) levels in FET (frozen embryo transfer) cycles has been debated. Furthermore, very little data is published regarding the significance of this levels stratified across FET preparation type and if one preparation regimen is clinically superior to another.

Effect of human umbilical cord mesenchymal stem cells on ovarian function in lupus mice

AbstractBackgroundPatients with systemic lupus erythematosus (SLE) suffer from a high incidence of premature ovarian failure, which might be due to cyclophosphamide gonadal toxicity, immune abnormalities, or other reasons. This study aimed to investigate whether the transplantation of human umbilical cord mesenchymal stem cells (HUC‐MSCs) can improve ovarian reserve function in lupus mice.MethodsWe used MRL/lpr mice to observe changes in ovarian structure and secretory function in SLE. Lupus mice and controls were injected with HUC‐MSCs at Weeks 12 and 16. We detected serum concentrations of the sex hormones estradiol (E2), follicle‐stimulating hormone (FSH), and anti‐Müllerian hormone (AMH), using enzyme‐linked immunosorbent assays. Hematoxylin and eosin staining showed ovarian tissue structure and enabled the counting of follicles. Hepatocyte growth factor (HGF) and insulin‐like growth factor 1 (IGF‐1) expression in ovarian tissue was observed by immunohistochemistry.ResultsOvarian function in lupus mice was abnormal, as indicated by decreased serum E2 and AMH concentrations, and increased FSH concentrations. HUC‐MSC transplantation caused significant upregulation of serum E2 and AMH and downregulation of FSH (all p &lt; 0.05). Ovarian structure improved and the follicle number increased after HUC‐MSC transplantation. Multiple infusions of HUC‐MSCs at Weeks 12 and 16 resulted in a significantly higher number of primordial follicles than infusions of HUC‐MSCs at only Week 12 (p &lt; 0.05). Immunohistochemistry showed that IGF‐1 and HGF expression increased after HUC‐MSC transplantation, but this was not significant.ConclusionsHUC‐MSCs transplantation restores disturbed hormone secretion and folliculogenesis in lupus mice. HUC‐MSC transplantation should be repeated for the best treatment effect.

Effects of electroacupuncture on sexual development and ovarian estrogen receptor β expression in female adolescent obese rats

To observe the effect of electroacupuncture on sexual development and ovarian estrogen receptor β(ER-β) expression in female adolescent obese rats induced by high-fat diet, so as to explore its underlying mechanisms of improving adolescent obesity. Female SD rats (age of 21 days) were randomly divided into control, model and acupuncture groups, with 6 rats in each group. The obese model was established by feeding high-fat diet for 6 weeks. Rats of the acupuncture group received electroacupuncture(2 Hz, 0.5-1.2 mA)stimulation at bilateral "Sanyinjiao"(SP6), "Fenglong"(ST40) and "Zusanli"(ST36) for 30 min, once a day for 14 days. The body mass and abdominal circumference of rats were measured before and after treatment. The contents of serum follicle stimulating hormone (FSH), luteinizing hormone (LH) and estradiol (E2) were detected by ELISA. The number of corpus luteum and follicle were observed by HE staining. The expression levels of ER-β mRNA and protein in ovary were detected by fluorescence quantitative PCR and Western blot, respectively. Compared with the control group, the body mass and abdominal circumference, the contents of serum FSH and E2, and the expression levels of ER-β mRNA and protein in ovary were significantly increased (P<0.05)in the model group, while the number of mature follicles and corpus luteum increased significantly. Compared with the model group, the body mass and abdominal circumference, the contents of serum FSH and E2, and the expression levels of ER-β mRNA and protein in ovary were significantly decreased (P<0.05) in the acupuncture group, while the number of mature follicles and corpus luteum decreased significantly. Electroacupuncture can effectively improve the levels of sex hormone and the development of ovary, down-regulate the expression levels of ER-β mRNA and protein in ovary, so as to regulate the process of sexual development of female adolescent obese rats induced by high-fat diet.

Identification of Candidate Genes for Twinning Births in Dezhou Donkeys by Detecting Signatures of Selection in Genomic Data.

Twinning trait in donkeys is an important manifestation of high fecundity, but few reports are available elucidating its genetic mechanism. To explore the genetic mechanism underlying the twin colt trait in Dezhou donkeys, DNA from 21 female Dezhou donkeys that had birthed single or twin colts were collected for whole-genome resequencing. FST, θπ and Tajima’s D were used to detect the selective sweeps between single and twin colt fecundity in the Dezhou donkey groups. Another set of 20 female Dezhou donkeys with single or multiple follicles during estrus were selected to compare concentrations of reproductive hormone including follicle-stimulating hormone (FSH), luteinizing hormone (LH), estradiol (E2) and progesterone (P4). Four candidate genes including ENO2, PTPN11, SOD2 and CD44 were identified in the present study. The CD44 gene had the highest FST value, and ENO2, PTPN11 and SOD2 were screened by two joint analyses (FST and θπ, θπ and Tajima’s D). There was no significant difference in the LH, FSH and P4 levels between the two groups (p > 0.05); however, the serum E2 content in the multi-follicle group was significantly higher than that in the single-follicle group (p < 0.05). The identified candidate genes may provide new insights into the genetic mechanism of donkey prolificacy and may be useful targets for further research on high reproductive efficiency.

Study of Serum Anti-Mullerian Hormone in the Diagnosis of Ovarian Reserve Function in Patients with Premature Ovarian Insufficiency.

Objective To explore the diagnostic value of serum anti-Mullerian hormone (AMH) for patients with premature ovarian insufficiency (POI) and premature ovarian failure (POF). Methods Totally, 125 women with menstrual disorder treated in the Obstetrics and Gynecology Department of Ningbo Women & Children Hospital between January 2020 and December 2021 were enrolled. Among them, based on the follicle-stimulating hormone (FSH) level, 54 patients (25 IU/L < FSH ≤ 40 IU/L) were assigned to the POI group, and 71 patients (FSH > 40 IU/L) were assigned to the POF group. In addition, 72 individuals who went physical examination in the hospital and showed normal menstrual cycle were selected as the control (CON) group. Serum AMH in each group was quantified via enzyme-linked immunosorbent assay (ELISA) and Beckman Coulter Access active immunoassay analyzer, and the levels of serum neutral hormones [luteinizing hormone (LH), FSH, as well as estradiol (E2)] in each group were detected through the electrochemiluminescence method. The difference between AMH level acquired by the latest automatic method and that acquired by the traditional manual ELISA was compared, and the correlation of serum AMH with sex hormones was analyzed. In addition, receiver-operating characteristic (ROC) curves were drawn for determining the diagnostic value of serum AHM for POI ad POF. Results Beckman Coulter Access quantified AMH more accurately and fastly (Beckman Coulter Access: 35 minutes; manual quantification: 3-4 hours) and was more sensitive than ELISA, with a requirement to less serum. The levels of serum AMH and E2 in the POF group were 0.04 ± 0.10 ng/mL and 35.16 ± 53.06 ng/mL, respectively, which were notably lower than those in the POI group ((0.69 ± 1.46) ng/mL and (3.96 ± 2.82) ng/mL) and CON group ((76.31 ± 97.84) ng/mL and (113.19 ± 114.84) ng/mL). The LH and FSH levels in the POF group were 37.86 ± 19.44 IU/L and 75.05 ± 35.31 IU/L, which were higher than those in POI group ((22.66 ± 26.15) IU/L and (11.30 ± 17.05) IU/L) and the CON group ((29.81 ± 4.45) IU/L and (6.78 ± 3.45) IU/L) (P < 0.05). The POI group showed a notably lower serum AMH level and notably higher LH and FSH levels than the CON group (P < 0.05), and the POI group was similar to the CON group in the E2 level (P > 0.05). Serum AMH showed a positive correlation with E2 (r = 0.291, P < 0.05) and a negative association with both FSH (r = −0.476, P < 0.05) and LH (r = −0.143, P < 0.1). The optimal cut-off value of serum AMH in predicting POI was 0.83 ng/mL, and the corresponding sensitivity and specificity were 95.8% and 85.2%. The optimal cut-off of serum AMH in predicting POF was 0.075 ng/mL, and the corresponding sensitivity and specificity were 81.7% and 94.4%. The area under ROC curve (AUC) of serum AMH + FSH in the diagnosis of POF was close to 1. Conclusion Beckman Coulter Access AMH test is the latest automatic electrochemiluminescence sandwich immunoassay, with higher sensitivity and reproducibility than traditional manual ELISA and with ability to produce repeatable results. With the decline of ovarian function, the serum AMH of POI patients decreases gradually, and the serum AMH of POF patients decreases obviously, so serum AMH level has great value in predicting POI and POF and can be used as a sensitive index for early diagnosis of the two. Serum AMH combined with FSH can lift the diagnostic efficiency of POF.

URINARY E3G MONITORING WITH THE MIRA FERTILITY TRACKER DURING COH AS AN ALTERNATIVE TO SERUM E2

A commercially available, direct to consumer, FDA-registered device called the Mira Fertility Tracker (“Mira”), measures quantitative urinary hormone levels via immunofluorescence for ovulation monitoring with a comparable accuracy to clinical immunoanalyzers. While Mira is marketed for use in physiological cycles, the ability to quantify estrone 3-glucuronide (E3G), the urinary metabolite of estradiol (E2), may provide an alternative to serum E2 measurements during IVF.

Paeoniflorin exhibits antidepressant activity in rats with postpartum depression via the TSPO and BDNF‑mTOR pathways.

Postpartum depression (PPD) is the most common type of puerperal mental syndrome and affects maternal physical and mental health and even the growth and development of infants. Paeoniflorin exerts a potential antidepressive effect; however, the functional roles and potential mechanisms of paeoniflorin in PPD are still largely unknown. PPD rat models were prepared by withdrawing hormone‑simulated pregnancy (HSP), and subjects were treated with paeoniflorin and fluoxetine or plasmids. The sucrose preference test (SPT), forced swimming test (FST) and tail suspension test (TST) were used to monitor depression‑like behavior in rats. A radioimmunoassay was utilized for estradiol (E2) and progesterone (P) measurements. ELISA was performed to detect serum corticosterone (Cor), hippocampal allopregnanolone (Allo), IL‑1β and TNF‑α levels. Expression of the E2 receptors ERα and ERβ was detected by qPCR. Western blotting was used to detect TSPO, BDNF and mTOR phosphorylation. Paeoniflorin drastically increased the sucrose preference of rats while decreasing the immobility time in the FST and TST in PPD models. Moreover, paeoniflorin intervention upregulated serum E2, hippocampal Allo, ERα, and ERβ levels but degraded P, serum Cor, IL‑1β, TNF‑α and ERα/ERβ levels. Mechanistically, paeoniflorin promoted TSPO and BDNF‑mTOR pathway activation in PPD rats. Furthermore, suppression of TSPO or the BDNF‑mTOR pathway partially reversed the effects of paeoniflorin on depression‑like behaviors, hormone levels, and inflammatory cytokine release. Paeoniflorin may improve symptoms of PPD by regulating the TSPO and BDNF‑mTOR pathways, indicating that paeoniflorin may be an effective anti‑PPD and antidepressant drug, providing evidence for the future treatment of PPD.

Association between Serum Copper, Selenium, Zinc, and Serum Estradiol in Women.

The objective is to examine the associations between serum copper, selenium, zinc, and serum estradiol (E2) among 2388 female participants from the National Health and Nutrition Examination Survey (NHANES). To estimate the association between serum copper, selenium, zinc, and serum E2, multivariate logistic regression analyses were conducted. Fitted smoothing curves and generalized additive models were also performed. After adjusting for confounding factors, it was found that female serum copper was positively correlated with serum E2. The relationship between serum copper and E2 showed an inverted U-shaped curve (inflection point: 28.57 μmol/L). Serum selenium in women was negatively correlated with serum E2, and in the subgroup of women aged 25-55, the relationship between serum selenium and E2 showed an inverted U-shaped curve (inflection point: 1.39 μmol/L). There was no correlation between serum zinc and serum E2 in women. Our study revealed a correlation between serum copper and selenium and serum E2 in women and identified an inflection point for each.

Optimizing estradiol level for gonadotrophin-releasing hormone antagonist initiation among patients with simple tubal factor infertility.

ObjectiveThe aim of this study is to investigate the optimal estradiol (E2) level on the day of gonadotropin-releasing hormone antagonist (GnRH-ant) initiation to maximize the clinical pregnancy rate (CPR) after fresh embryo transfer among patients with simple tubal factor infertility.MethodsA retrospective cohort study was conducted in the Reproductive Medicine Center, the Second Hospital of Hebei Medical University. A total of 1,493 IVF-ET cycles of patients diagnosed with single tubal factor infertility from August 2016 to August 2021 were included and equally allocated into five distinct groups according to the quintile serum E2 levels on the day of GnRH-ant initiation. The five groups had similar baseline data except for antral follicle count.Result(s)The serum E 2 level on GnRH-ant initiation day was determined as an independent predictor of clinical pregnancy after adjusting for confounding factors such as age, infertility duration, body mass index, cycle number, antral follicle count, and the number of transferred embryos. Through smooth curve fitting, we found that, with the increase of serum E2 levels on the day of GnRH-ant initiation, CPR showed a trend of slight increase and then slight decrease. The maximal CPR was achieved when the serum E2 level on GnRH-ant initiation day was 498 pg/ml. When E2 was less than 498 pg/ml, the odds ratio (OR) of clinical pregnancy was 1.05 (95% CI: 1.00, 1.11, P = 0.0583). When E2 was greater than 498 pg/ml, the OR of clinical pregnancy was 0.97 (95% CI: 0.95, 0.98, P = 0.0003). Furthermore, CPR remained high when E2 was 436.8–658.6 pg/ml but declined significantly by more than 40% when E2 was ≥ 894.4 pg/ml (P < 0.05).Conclusion(s)The serum E2 level should be considered as an adjuvant parameter for GnRH-ant initiation. The best E2 value was 498 pg/ml, and GnRH-ant administration could be recommended to initiate when serum E2 was 436.8–658.6 pg/ml. If GnRH-ant was initiated when serum E2 was above 894.4 pg/ml, then the CPR after fresh embryo transfer may decline dramatically, and thus, cancellation of fresh embryo transfer and earlier initiation of GnRH-ant in future cycles should be considered.

BONE MASS DENSITY AND CARDIORESPIRATORY FITNESS AMONG 30 ~ 59-Y WOMEN

PURPOSE: Bone mass density(BMD) and cardiorespiratory endurance(CRF) are main markers of physical fitness and wellness. This study aims to explore the relationship between BMD and CRF among 30 ~ 59-y women, and the role of Estradiol (E2) and osteocalcin (BGP). METHODS: 226 healthy women age 30 to 59 y participated. BMD of total and various parts of the body were measured by DEXA (GE company). All participants conducted symptom restricted exercise load test with Bicycle ergometer (cortex custo ec300). Serum E2 and BGP were measured using Radioimmunoasssay (DSL). F-test, Correlation and Linear regression methods were used (SPSS 15.0). RESULTS: The concentration of BGP was positively correlated with exercise termination load and time (r1 = 0.296, r2 = 0.309, P < 0.05); There is a significant positive correlation between serum E2 and exercise termination load, termination heart rate and time (r1 = 0.300, r2 = 0.305, r3 = 0.290, P < 0.05). But those correlations are no longer significant after adjusting for age. There is a significant correlation between BMD of thigh, trunk, pelvis and whole body and exercise termination load (r = 0.304, 0.319, 0.303, 0.330, P < 0.05) after age adjusted. The regression equation between exercise termination load intensity and whole-body BMD Z score is y = 99.350 + 8.619x (R = 0.320, R2 = 0.103). There is a significant positive correlation between Z-score of whole-body BMD and exercise termination load. The participants were divided into three groups with low (the lowest 20%, Z-Score ≤ - 0.6), medium (middle 40% Z-Score : - 0.6 ~ 0.6) and high (the highest 40%, Z-score ≥ - 0.6) BMD, and the age of each group was balanced. There is significant difference in exercise termination load between different BMD groups (88.6 ± 20.5, 99.1 ± 22.0 and 110.7 ± 21.3 W respectively, F = 3.287, P = 0.046). CONCLUSIONS: The changes of body composition are related to cardiopulmonary function, especially BMD is positively correlated with CRF. The relationship between E2 level and exercise ability could be mainly attributed to the age change. Improving body composition, especially maintaining BMD through lifestyle intervention is of great significance to women’s cardiovascular health. This Study was Suppoted by the National Science and Technology Key Project 2018YFC2000600

Influence Of The Menstrual Cycle On Muscle Damage Marker And Leukocyte Reaction Following Eccentric Exercise

PURPOSE:Ovarian hormone could inhibit exercise-induced muscle damage and leukocyte infiltration. Premenopausal women experience ovarian hormonal changes by the menstrual cycle (MC); therefore, MC could be related to muscle damage and leukocyte reaction, although it is not be clear. The purpose of this study was to investigate how MC could influence serum creatine kinase (CK) and leukocyte reaction following eccentric exercise. METHODS: Twenty-two untrained women with eumenorrhea (age 27.0 ± 6.4 years; height 160.1 ± 4.2 cm; weight 57.8 ± 7.0 kg; and body mass index 22.5 ± 2.3 kg/m2 [mean ± SD]) participated in the study. The subjects performed 10 sets of 6 repetitions of eccentric exercises with their nondominant arm in the early follicular phase (E-FP, n = 12) or midluteal phase (M-LP, n = 10). Blood samples were collected pre-exercise (PRE) and 4, 48, and 96 hours (h) post-exercise (POST) to analyze serum estradiol (E2) and progesterone (P4) concentration, serum CK, leukocyte count, and leukocyte fractionation (neutrophils, lymphocyte, monocyte, and other leukocytes). We assessed the isometric strength of elbow flexion, range of motion in the elbow joint, upper arm circumference and visual analog scale rating of perceived muscle soreness at PRE, immediately post, POST 4, 48, and 96 h. RESULTS: The serum E2 concentrations at PRE were significantly higher in the M-LP than the E-FP (E-FP 42.9 ± 18.6 vs. M-LP 186.4 ± 98.6 pg/mL; p < 0.01). The serum P4 concentrations at PRE were significantly higher in the M-LP than the E-FP (E-FP 0.2 ± 0.1 vs. M-LP 15.0 ± 3.1 ng/mL; p < 0.01). Significant time effects were present for serum CK at PRE to POST 48 h and 96 h (p < 0.05). No MC phase effect could be observed. The percent change in neutrophils at PRE to POST 4 h tended to be lower in the M-LP than the E-FP (E-FP 38.2 ± 32.6 vs. M-LP 11.4 ± 20.6%; p = 0.050). The serum E2 and P4 concentrations were not related to serum CK at all measurement points. A significant positive correlation could be observed between the PRE serum E2 concentration and PRE lymphocyte count (r = 0.470, p < 0.05). It was unrelated after the exercise. The POST 96 h serum CK was related to the POST 96 h neutrophil count (r = 0.469, p < 0.05). CONCLUSIONS: These results suggest that MC could affect the early leukocyte reaction following eccentric exercise without influencing the serum CK.

Bisphenol A analogues in associations with serum hormone levels among reproductive-aged Chinese men.

Bisphenol A (BPA) as an endocrine disrupting chemical has been shown to alter reproductive endocrine function, but little is known on its analogues such as bisphenol F (BPF) and bisphenol S (BPS) with increasing usage and exposure. To explore the associations between exposures to BPA, BPF and BPS and serum reproductive hormones among reproductive-aged Chinese men. We measured BPA, BPF and BPS concentrations in repeated urine samples and multiple reproductive hormones in the serum samples collected from 462 men attending an infertility clinic in Wuhan, China. Linear regression models were applied to assess the associations between averaged urinary BPA, BPF and BPS levels and serum hormone concentrations, and restricted cubic spline (RCS) models were further utilized to explore potential non-linear associations. We also examined potential modifying effects by age and body mass index (BMI). There was little evidence of associations between BPA exposure and altered reproductive hormones. However, we found that elevated BPF and BPS exposures were in negative associations with estrogen (E2) levels and E2/T (total testosterone) ratio (all P for trends<0.05), and that elevated BPS exposure was negatively associated with SHBG levels (P for trend=0.09). Based on the RCS models, these linear negative associations except that between BPS exposure and E2/T ratio were further confirmed. In stratified analyses, BPF and BPS exposures in relation to reduced E2 and E2/T ratio were more pronounced among men aged>30years, whereas their associations with reduced SHBG levels were more pronounced among men aged≤30. Also, BPS exposure in negative association with FSH only emerged among men with BMI≥24kg/m2 (P for interaction=0.03). BPF and BPS exposures were negatively associated with male serum E2, E2/T ratio and SHBG levels, and these associations varied by age and BMI.

High expression of CFTR in cumulus cells from mature oocytes is associated with high-quality of oocyte and subsequent embryonic development.

The purpose of this study was to explore the association of expression of cystic fibrosis transmembrane conductance regulator (CFTR) in cumulus cells (CCs) from mature oocytes with oocyte quality and embryonic development. A total of 338 infertile women who underwent ovarian stimulation cycle of oocyte retrieval in Zhejiang University School of Medicine were retrospectively enrolled in this study. The relative mRNA expression levels of CFTR, bone morphogenetic protein 15 (BMP15), and growth differentiation factor 9 (GDF9) in CCs were detected by qPCR technology. ROC curve was applied for the diagnosis of oocyte maturation. The serum levels of anti-Müllerian hormone (AMH), E2, follicle-stimulating hormone (FSH), luteinizing hormone (LH), and androstenedione were measured. Oocyte maturation rate, fertilization rate, cleavage rate, high-quality embryo formation rate, and implantation rate after embryo transfer were also determined. The mRNA expression levels of CFTR in CCs were significantly increased in metaphase II (MII) oocytes compared to that in metaphase I (MI) or germinal vesicle (GV) oocytes. The ROC curve analysis illustrated that CFTR mRNA expression could efficiently discriminate MII oocytes from MI or GV oocytes (AUC = 0.954), and revealed that 0.695 RQU is the optimal cut-off value for diagnosis. So the cut-off value of 2-ΔΔCT = 0.70 was used to divide the patients into two groups: low- (n = 114) and high-CFTR group (n = 224). The mRNA expression of CFTR in CCs was positively correlated with the antral follicular count (AFC), number of oocytes retrieved, number of MII oocytes, serum E2 level on hCG day, and BMP15 and GDF9 expression in CCs. Under continuous stimulation with the same dose of recombinant follicle-stimulating hormone (rFSH), the number of follicles, average recovered oocytes, recovered oocytes, MII oocytes, as well as the oocyte recovery rate, fertilization rate, oocyte cleavage rate, high-quality embryo formation rate, and implantation rate were decreased in patients with lower CFTR. This study suggests that CFTR expression in CCs is associated with the developmental potential of human oocytes.