Plasma-derived from human umbilical cord blood restores ovarian function and improves serum reproductive hormones levels in mice with premature ovarian insufficiency (POI) through cytokines and growth factors.

Premature ovarian insufficiency (POI) patients experience a decline in ovarian function and a reduction in serum reproductive hormones, leading to a significant impact on the outcomes of assisted reproductive technology. Despite the absence of an effective clinical treatment to restore fertility in POI patients, recent research has indicated that cord blood plasma (CBP) derived from human umbilical cord blood (hUCB) may offer therapeutic benefits for various degenerative diseases. The primary aim of this study is to explore approaches for enhancing ovarian function and serum reproductive hormones through the administration of CBP in a murine model.

Bilateral varicocele leads to ferroptosis, pyroptosis and necroptosis of human spermatozoa and affects semen quality in infertile men.

This study explored the effects of bilateral varicocele on male semen quality in infertile men and the molecular mechanisms involving ferroptosis, pyroptosis and necroptosis signaling pathways. Totally, 20 healthy males and 26 patients with bilateral varicocele receiving infertility treatment were enrolled. Semen samples were collected.

The Predictive Levels of Serum Anti-Müllerian Hormone and the Combined Index of the Number of Retrieved Oocytes and Good-Quality Embryos in Advanced-Age Infertile Women.

The primary objective of the study was to assess the values of serum anti-Müllerian hormone (AMH) levels and the combined index for the prediction of number of oocytes retrieved (NOR) and number of good-quality embryos (GQE) in infertile women undergoing IVF/ICSI treatment. A group of 521 infertile women aged 21-46 years were recruited as subject in this study. Serum AMH, hormones, and antral follicle count (AFC) were measured.

LncRNAs induce oxidative stress and spermatogenesis by regulating endoplasmic reticulum genes and pathways.

Oligozoospermia or low sperm count is a leading cause of male infertility worldwide. Despite decades of work on non-coding RNAs (ncRNAs) as regulators of spermatogenesis, fertilization, and male fertility, the literature on the function of long non-coding RNAs (lncRNAs) in human oligozoospermia is scarce. We integrated lncRNA and mRNA sequencing data from 12 human normozoospermic and oligozoospermic samples and comprehensively analyzed the function of differentially expressed lncRNAs (DE lncRNAs) and mRNAs (DE mRNAs) in male infertility.

The status and comparison of ovarian reserve between fertile and infertile healthy Chinese women of reproductive age.

We aimed to investigate ovarian reserve status, and explore differences in ovarian reserve between fertile and infertile healthy Chinese women of reproductive age.We recruited 442 fertile women aged 23 to 49 years (mean: 35.22 ± 4.

High anti-Müllerian hormone levels might not reflect the likelihood of clinical pregnancy rate in IVF/ICSI treatment.

Objective: To investigate if high anti-Müllerian hormone (AMH) concentration is a useful tool to predict the outcome of assisted reproductive treatment.

Methods: Retrospective cohort study involving 520 patients who underwent IVF/ICSI procedures in a university hospital. We measured the serum AMH level on day 3 of the menstrual cycle.

The Epidemiological Characteristics of Late-Onset Hypogonadism in Chinese Middle-Aged and Elderly Men: Two Cross-Sectional Studies in the Same Community.

The purpose of this study was to investigate the prevalence and epidemiological characteristics of late-onset hypogonadism (LOH) in middle-aged and elderly Chinese men. Two cross-sectional studies were conducted at 5-year intervals in community-dwelling men living in the same area. A total of 1472 (Study 1, S1) and 944 (Study 2, S2) men aged 40-69 years old were recruited as subjects.

Melatonin induction of HSP90 expression exerts cryoprotective effect on ovarian tissue.

Our previous study revealed that melatonin (MLT) protected the quality of cryopreserved ovarian tissues in mice. This work was carried out to examine the role of MLT in inducing HSP90 expression of ovarian tissue for achieving cryoprotection. Pieces of ovarian tissues were obtained from 50 female rats treated with MLT at 0, 0.

The comparison of evaluative effectiveness between antral follicle count/age ratio and ovarian response prediction index for the ovarian reserve and response functions in infertile women.

Aim of the present study was to explore the evaluative effectiveness of age, ovarian volume (OV), antral follicle count (AFC), serum follicle-stimulating hormone (FSH), anti-Müllerian hormone (AMH), AFC/Age ratio, AMH/Age ratio, FSH/luteinizing hormone (LH) ratio, and ovarian response prediction index (ORPI) to determine which could more advantageously assess ovarian reserve and response.This research enrolled 319 consecutive infertile women who had undergone in vitro fertilization-ET/intracytoplasmic sperm injection (IVF-ET/ICSI) treatments. Abovementioned variables were measured and calculated.

Melatonin Inhibits Oxidative Stress and Apoptosis in Cryopreserved Ovarian Tissues via Nrf2/HO-1 Signaling Pathway.

In the field of assisted reproductive technology, female fertility preservation, particularly ovarian tissue cryopreservation in adolescent cancer patients, has attracted much attention. Melatonin (MLT) is well known for its antioxidative and anti-apoptotic properties; however, whether it can ameliorate the cryoinjury and inhibit the generation of reactive oxygen species (ROS) in cryopreserved ovarian tissues (OTs) has not yet been reported. Here, we demonstrated that MLT could protect follicular integrity; prevent cell apoptosis; decrease ROS, malondialdehyde (MDA), and nitric oxide (NO) levels; and increase activities of glutathione peroxidases (GSH-Px), glutathione (GSH), catalase (CAT), and superoxide dismutase (SOD) in cryopreserved OTs.

Age-related changes in serum reproductive hormone levels and prevalence of androgen deficiency in Chinese community-dwelling middle-aged and aging men: Two cross-sectional studies in the same population.

To investigate the age-related nomograms and change trends of reproductive hormones, and prevalence of androgen deficiency (AD) in middle-aged and aging men from 2 studies.Two cross-sectional studies were conducted at 5-year intervals in Chinese community-dwelling men living in the same area. A total of 434 (Study 1, S1) and 944 (Study 2, S2) men aged 40 to 69 years were recruited as subjects and 59 (S1) and 98 (S2) men aged 20 to 39 years as controls to measure serum reproductive hormone levels.

[Levels of serum reproductive hormones and metabolic syndrome in adult males].

Objective: To investigate the prevalence of metabolic syndrome (MS) and its relationship with reproductive hormones in adult males in China.

Methods: Using the cluster and stratified sampling methods, we conducted an investigation among 3 600 adult males aged over 20 years in Hebei, Shaanxi and Jiangsu provinces. We obtained their reproductive hormone levels, biochemical indicators and basic body indexes and compared them between the two groups of subjects.

A clinical trial on the consistency of bilateral testicular tissue histopathology and Johnsen score: single side or bilateral side biopsy?

To evaluate and compare left and right testicular tissue histopathology and Johnsen score, and to investigate the necessity for bilateral testicular biopsy. We recruited180 patients with non-obstructiveazoospermia (NOA) on testicular biopsy who had undergonetesticular sperm aspiration (TESA). Pathological sections of testicular tissue were diagnosed by specially-assigned doctors, who evaluated pathological findings, determined the Johnsen score and confirmed for the presence or absence of sperm.

[Serum homocysteine and metabolic syndrome in middle-aged and elderly men].

Objective: To investigate the relationship among serum reproductive hormone levels, serum homocysteine (Hcy) levels, metabolic syndrome (MS), and the components of MS in middle-aged and elderly males.

Methods: Using the cluster and stratified sampling methods and a unified structured questionnaire, we conducted a survey among 948 men aged 40 - 80 years in the rural community, measured their basic physical parameters, and obtained their reproductive hormone levels, serum Hcy concentrations, and metabolism-related indicators. We collected 868 valid questionnaires along with their serum samples, divided the subjects into an MS and a non-MS control group in a 1:1 ratio, and measured their serum Hcy concentrations.

Correlation between body mass index and semen quality in male infertility patients.

Background/aim: The question of whether body mass index (BMI) affects semen quality and male fertility is controversial. The purpose of this research was to determine whether there is a correlation between BMI and semen analysis parameters.

Materials And Methods: A total of 617 male infertility patients were recruited and separated into 3 groups according to BMI values as follows: normal weight group (n = 334), overweight group (n = 220), and obese group (n = 63).

The prevalence of erectile dysfunction among subjects with late-onset hypogonadism: a population-based study in China.

Introduction: The concurrence of chronic diseases and some well-defined risk factors significantly impacts the prevalence of erectile dysfunction (ED).

Aim: To determine whether late-onset hypogonadism (LOH) impacts the prevalence of ED using investigation reproductive health data of middle-aged and aging males in China.

Methods: The reproductive health status of 1498 males, aged 40-69 years, was evaluated using questionnaires of LOH based on the Androgen Deficiency in Aging Males (ADAM) and Aging Male Symptoms scale (AMS), as well as the International Index of Erectile Function-5 (IIEF-5) assessment.

Is serum sex hormone-binding globulin a dominant risk factor for metabolic syndrome?

This multi-center, cross-sectional study investigated the association between serum testosterone (T) levels, serum sex hormone-binding globulin (SHBG) levels, and the risk of metabolic syndrome (MS) in 3332 adult Chinese men. The prevalence of MS was 34.7%, and men with MS had lower serum levels of total T (TT) and SHBG than those without MS (P < 0.

[Serum testosterone reduction and metabolism in aging male rats: correlation and mechanism].

Objective: To investigate the mechanism of serum testosterone reduction, its relationship with metabolism, changes in the number and morphology of Leydig cells and endocrine function in aging male rats.

Methods: The levels of serum total testosterone (tT), LH, FSH, HDL, LDL, TG, TC, Glu, INS, IRG and LP were determined in young (9 mo) and aging rats (12, 15, 18 and 21 mo), with 6 in each group. The morphological changes of Leydig cells were observed under the microscope.

[Clinical validation of screening scales for late onset of hypogonadism in Chinese males].

Objective: To investigate the incidence of late onset of hypogonadism (LOH) in males as well as the sensitivity, specificity and applicability of the androgen deficiency in aging males (ADAM) questionnaire and the aging males' symptoms (AMS) scale in Chinese males based on the community population data.

Methods: A total of 1 498 old and middle-aged healthy males attended the ADAM and AMS investigations, of whom 434 received the measurement of the concentration of serum reproductive hormones, the positive rate of LOH screening, the rate of androgen deficiency, the clinical incidence of LOH, and the sensitivity and specificity of ADAM and AMS by tT and fT cut-off. The symptom evaluation cut-off value of the AMS score was optimized using the ROC curve.

[Changes of serum reproductive hormones with aging among healthy males in a community population of Hebei Province].

Objective: To investigate the changes of serum reproductive hormones with male aging and to compare the differences in the hormone levels among different age groups or between township and rural males of the same age group.

Methods: Using cluster and stratified sampling, we recruited 434 healthy old and middle-aged (40-69 years) males, 198 from the township and 236 from the rural communities. We determined the concentrations of serum total testosterone (tT), luteinizing hormone (LH) and sex hormone binding globulin (SHBG), free testosterone (fT), bio-available testosterone (Bio-T), and obtained the testosterone secretion index (TSI) and free testosterone index (fTI).

[Update of researches on and utilization of screening questionnaires on late-onset hypogonadism in males].

The screening questionnaires on late-onset hypogonadism (LOH) in males are being gradually perfected with the progress in the researches on this problem. Among the more commonly used screeners are the Aging Male Symptoms Scale (AMS), Androgen Deficiency in the Aging Males Questionnaire (ADAM) and Massachusetts Male Aging Survey Questionnaire (MMAS), which are intended for the screening or diagnosis of LOH as well as for the evaluation of its therapeutic results. Nowadays LOH-related researches are mostly concentrated on the utilization of the questionnaires, validation of their sensitivity and specificity, correlation of screening outcomes or some items with serum hormone levels, and comparison of different screening questionnaires, etc.