Function Of Reproductive Organs Research Articles

Zinc Sulfate and α-tocopherol Supplementation Enhance Reproductive Performance in Male Albino Rats (Rattus norvegicus) With Lead Acetate Toxicity

Metal toxicity from lead affects reproductive organ function by activating reactive oxygen species processes. This study aims to see how α-tocopherol and zinc sulfate (ZnSO4) affect gonads, liver, follicle-stimulating hormone, luteinizing hormone, spermatogenesis (the amount of spermatogonia, spermatocytes, and spermatids), and Leydig cells in male albino rats (Rattus norvegicus) exposed to lead acetate Pb(CH3COO)2. The samples used were 25 male Wistar rats aged 4 months, separated into five groups. For 30 days, all treatment groups were exposed to Pb(CH3COO)2 at a level of 50-mg/kg body weight (BW). The T1 group was given a dosage of 100-mg/kg BW of α-tocopherol. The ZnSO4 was given to the T2 group at a dose of 0.54-mg/kg BW. Meanwhile, the T3 group was given a mixture of ZnSO4 at 0.54-mg/kg BW and α-tocopherol at 100-mg/kg BW orally. ELISA test was carried out to determine the level of luteinizing hormone (LH) and follicle-stimulating hormone (FSH) in a blood plasma sample of 100 μl / 1 mg. Histopathological observations made on the liver included counting damaged cells and seminiferous tubules that included counting the amount of spermatogonia, spermatocytes, spermatids, Sertoli cells, and Leydig cells. Using SPSS 20 software, the collected data were analyzed using analysis of variance, followed by Duncan’s test with a 95% simultaneous confidence level. The highest average levels of FSH and LH in the T3 group were 3.6162 mIU/mL and 14.9658 mIU/mL. The finding showed that Pb(CH3COO)2 caused disruptions in the spermatogenesis and Leydig cell processes. Exogenous antioxidants in combination with ZnSO4 and α-tocopherol had significant effect on enhancing reproductive performance in animals exposed to Pb(CH3COO)2.

Glyphosate: Hepatotoxicity, Nephrotoxicity, Hemotoxicity, Carcinogenicity, and Clinical Cases of Endocrine, Reproductive, Cardiovascular, and Pulmonary System Intoxication.

Glyphosate (GLP) is an active agent of GLP-based herbicides (GBHs), i.e., broad-spectrum and postemergent weedkillers, commercialized by Monsanto as, e.g., Roundup and RangerPro formulants. The GBH crop spraying, dedicated to genetically engineered GLP-resistant crops, has revolutionized modern agriculture by increasing the production yield. However, abusively administered GBHs' ingredients, e.g., GLP, polyoxyethyleneamine, and heavy metals, have polluted environmental and industrial areas far beyond farmlands, causing global contamination and life-threatening risk, which has led to the recent local bans of GBH use. Moreover, preclinical and clinical reports have demonstrated harmful impacts of GLP and other GBH ingredients on the gut microbiome, gastrointestinal tract, liver, kidney, and endocrine, as well as reproductive, and cardiopulmonary systems, whereas carcinogenicity of these herbicides remains controversial. Occupational exposure to GBH dysregulates the hypothalamic-pituitary-adrenal axis, responsible for steroidogenesis and endocrinal secretion, thus affecting hormonal homeostasis, functions of reproductive organs, and fertility. On the other hand, acute intoxication with GBH, characterized by dehydration, oliguria, paralytic ileus, as well as hypovolemic and cardiogenic shock, pulmonary edema, hyperkalemia, and metabolic acidosis, may occur fatally. As no antidote has been developed for GBH poisoning so far, the detoxification is mainly symptomatic and supportive and requires intensive care based on gastric lavage, extracorporeal blood filtering, and intravenous lipid emulsion infusion. The current review comprehensively discusses the molecular and physiological basics of the GLP- and/or GBH-induced diseases of the endocrine and reproductive systems, and cardiopulmonary-, nephro-, and hepatotoxicities, presented in recent preclinical studies and case reports on the accidental or intentional ingestions with the most popular GBHs. Finally, they briefly describe modern and future healthcare methods and tools for GLP detection, determination, and detoxification. Future electronically powered, decision-making, and user-friendly devices targeting major GLP/GBH's modes of actions, i.e., dysbiosis and the inhibition of AChE, shall enable self-handled or point-of-care professional-assisted evaluation of the harm followed with rapid capturing GBH xenobiotics in the body and precise determining the GBH pathology-associated biomarkers levels.

(303) The Predictive Role of Baseline Hormone Profile Evaluation for the Likelihood of Having a Child in Infertile Men

Abstract Introduction Sex hormone profile evaluation is commonly used in male infertility assessment to identify potential hormonal imbalances and underlying issues that can impact sperm production, sperm quality, or reproductive organ function. Objective To evaluate the likelihood of having a child in subfertile and infertile men within five years based on their serum hormone levels on their initial encounter for infertility evaluation/treatment. Methods We identified a retrospective cohort from the Subfertility, Health, and Assisted Reproduction (SHARE) study (compiled 1996-2017) linked with familial information from the Utah Population Database (UPDB) including all men with a measured value of albumin, follicle-stimulating hormone (FSH), luteinizing hormone (LH), Free testosterone (T), total, and bioavailable T, sex hormone binding globulin (SHBG), and estradiol (E). We included men who had a semen analysis (SA) within 1 year of their hormone measurement. The primary outcome of the study was any evidence of childbirth, and the secondary outcome was the time from baseline hormone evaluation to childbirth. All men were followed for 60 months after their recorded hormone value for evidence of childbirth. Using Cox proportional hazards models, we modeled the likelihood of having a child and the time to childbirth (using linear regression) against the quintile of hormone distribution. Results A total number of 1298 men who underwent hormone profile evaluation and SA were included in this study. The mean age for the total cohort was 33 (29-37) years old. Men who had a child at the end of the study period (31 (28-36)) were significantly younger than men without a child at the end of the study with a mean age of (35.5 (32-40.25)) (p < 0.001). The mean sperm concentration for the total cohort was 7.6 (1-27.4) (M/ml) and the mean total progressive motile count was 9 (0.9-47) (M). Overall, semen parameters showed no significant differences between men who had a child at the end of the study follow-up versus men who did not. Our models showed that prolactin serum levels in quantile 7 have the highest ratio (2.236 (0.919-5.44) p=0.076) for the likelihood of having a child. Total testosterone in quantiles 3 and 5 showed an increased likelihood of having a child (2.119 (1.176-3.821) (p=0.012), (2.518 (1.412-4.491)) (p=0.002), respectively. Albumin in quantiles 5-9 followed a similar pattern with the highest ratio in quantile 8 (3.551 (1.486-8.487)) (p=0.004). Our results did not show meaningful patterns between semen parameters, serum hormone levels, and time to having a child. Conclusions The outcomes of this study indicate that prolactin, total testosterone, and albumin serum levels on the first visit in men with infertility concerns are associated with an increased likelihood of having a child. Abnormal semen analysis outcomes are not well associated with hypoandrogenism in infertile men. Our study shows that baseline serum prolactin, total testosterone, and albumin levels can be used to estimate the likelihood of having a child in subfertile and infertile men. These findings can provide the basis for further studies to determine an optimal screening method for male-factor infertility related to abnormal hormone levels. Disclosure Any of the authors act as a consultant, employee or shareholder of an industry for: Equity/salary/officer in company: Paterna bio, firmtech; Consulting: Turtle health, maximus, carrot; inherent bio.

Functions and mechanism of noncoding RNA in regulation and differentiation of male mammalian reproduction.

Noncoding RNAs (ncRNAs) are active regulators of a wide range of biological and physiological processes, including the majority of mammalian reproductive events. Knowledge of the biological activities of ncRNAs in the context of mammalian reproduction will allow for a more comprehensive and comparative understanding of male sterility and fertility. In this review, we describe recent advances in ncRNA-mediated control of mammalian reproduction and emphasize the importance of ncRNAs in several aspects of mammalian reproduction, such as germ cell biogenesis and reproductive organ activity. Furthermore, we focus on gene expression regulatory feedback loops including hormones and ncRNA expression to better understand germ cell commitment and reproductive organ function. Finally, this study shows the role of ncRNAs in male reproductive failure and provides suggestions for further research.

Developmental heat stress interrupts spermatogenesis inducing early male sterility in Drosophila melanogaster

Thermal stress leads to fertility reduction, can cause temporal sterility and thus results in fitness loss with severe ecological and evolutionary consequences, e.g., threatening species persistence already at sub-lethal temperatures. For males we here tested which developmental stage is particularly sensitive to heat stress in the model species Drosophila melanogaster. As developmental stages characterize the different steps of sperm development, we could narrow down which particular processes are heat sensitive. We studied early male reproductive ability and, by following recovery dynamics after a move to benign temperatures, we investigated general mechanisms behind a subsequent gain of fertility. We found strong support to suggest that the last steps of spermatogenesis are particularly sensitive to heat stress, as processes occurring during the pupal stage were mostly interrupted, delaying both sperm production and sperm maturation. Moreover, further measurements in the testes and for proxies of sperm availability indicating the onset of adult reproductive capacity matched the expected heat-induced delay in completing spermatogenesis. We discuss these results within the context of how heat stress affects reproductive organ function and the consequences for male reproductive potential.

Empowerment Education Programmed for Teenagers as Health Cadres On Reproductive Health Awareness in Bojonegoro, Indonesia

Puberty makes adolescents aware of their potential and become more expressive in exploring their sexual organs and behaviour. The increasing number of adolescent reproductive health issues, especially those related to personal hygiene, the provision of information, services and health education to adolescents is very important. The solution to the problem of lack of knowledge about the function of reproductive organs is done by increasing counselling on the introduction of the reproductive system, female personal hygiene, male personal hygiene, unwanted pregnancy and understanding STIs & HIV/AIDS by using the concepts of input, process, outcome and impact. The method used in community empowerment activities is in the form of counselling activities for adolescent health cadres at Al Munawar Islamic Boarding School as many as 30 students. The purpose of this community service is to increase the knowledge and skills of adolescent cadres through training and the formation of adolescent cadres aware of reproductive health at Pondok Pesantran Al Munawar Kunci Village, Dander Kab. Bojonegoro. After the provision of Health Education, the results of activities in the form of Increased knowledge obtained Pre test and Post test scores obtained. The average value of the Pre Test is 51.75 and the average Post test is 82.88, there is an increase in knowledge of 31.13% trainees, on Skills in Counseling or IEC on Adolescent Reproductive Health obtained The average value of IEC is 84.38 and the results are 66.7% very good results. The implication of this research is the active role of adolescents and the community in increasing Adolescent Health Knowledge about reproductive health so as to produce a healthy young generation in preparing their reproduction

Educational Game Design Sex for Early Childhood Based Android application to Prevent Sexual Harassment and Bullying in Children

Sex education is effort teaching , awareness , and giving information about problem sexual . The information provided includes _ knowledge about reproductive organ function with instill morals, ethics , commitment , religion so as not to happen abuse of reproductive organs the . Knowledge about sex in children can prevent happening deviation sex in children . Sex education in children can also prevent children _ No become a victim of abuse sexual , with provided knowledge about sex , they become understand which behaviors are included abuse sexual . Study This aim For produce android application in the form of educational games sex For child age early and Develop a guide use application as well as test effectiveness product . Study This belong in Research and Development (R&D), using steps _ _ following : Define, Design, Development , and Dissemination or abbreviated with 4D. Research results This form android application in form of educational games sex For child age early , or called “ GmES ” Educational Game Sex for Early Childhood . Has 4 main menus , namely : 1) Main page containing information about applications , 2) Educational videos containing song touch may and touch No yes , 3) Educational game containing part body touch may and may not can child lali - male and female , 4) Evaluation Menu question based quiz you can done with parents . _ kindly appearance and function showing good results , however _ Still need development next . Conclusion in This research is research to produce sex educational games for early childhood based Android application that contains 4 main menus namely : Home Page, Educational Videos , Game Touch Yes & No OK , evaluate with Parents . _ Educational Games Early Childhood Sex delivers _ education through video, train child through pictures and sound , evaluation with parents . Suggestions for next can developed more game forms interactive and interesting , as well can added appearance based on Augmented Reality.

Roles of the Oxytocin Receptor (OXTR) in Human Diseases.

The oxytocin receptor (OXTR), encoded by the OXTR gene, is responsible for the signal transduction after binding its ligand, oxytocin. Although this signaling is primarily involved in controlling maternal behavior, it was demonstrated that OXTR also plays a role in the development of the nervous system. Therefore, it is not a surprise that both the ligand and the receptor are involved in the modulation of behaviors, especially those related to sexual, social, and stress-induced activities. As in the case of every regulatory system, any disturbances in the structures or functions of oxytocin and OXTR may lead to the development or modulation of various diseases related to the regulated functions, which in this case include either mental problems (autism, depression, schizophrenia, obsessive-compulsive disorders) or those related to the functioning of reproductive organs (endometriosis, uterine adenomyosis, premature birth). Nevertheless, OXTR abnormalities are also connected to other diseases, including cancer, cardiac disorders, osteoporosis, and obesity. Recent reports indicated that the changes in the levels of OXTR and the formation of its aggregates may influence the course of some inherited metabolic diseases, such as mucopolysaccharidoses. In this review, the involvement of OXTR dysfunctions and OXTR polymorphisms in the development of different diseases is summarized and discussed. The analysis of published results led us to suggest that changes in OXTR expression and OXTR abundance and activity are not specific to individual diseases, but rather they influence processes (mostly related to behavioral changes) that might modulate the course of various disorders. Moreover, a possible explanation of the discrepancies in the published results of effects of the OXTR gene polymorphisms and methylation on different diseases is proposed.

Kisspeptin regulates the proliferation and apoptosis of ovary granulosa cells in polycystic ovary syndrome by modulating the PI3K/AKT/ERK signalling pathway

BackgroundThe development of polycystic ovary syndrome (PCOS) is closely correlated with apoptosis and oxidative stress in ovarian granulosa cells. Kisspeptin plays an important role in reproductive organ function. This study aimed to explore the role of kisspeptin in PCOS and oxidative stress-triggered apoptosis of ovarian granular cells.MethodsA PCOS rat model was established by injecting dehydroepiandrosterone (DHEA) and feeding the rats a high-fat diet. The RNA and protein levels of kisspeptin were analysed by quantitative PCR, western blotting, and histological staining. Tissue damage was evaluated using haematoxylin and eosin (H&E) staining. The viability and proliferation of human granulosa cell KGN were measured using the cell counting kit-8 (CCK-8) and 5-ethynyl-2′-deoxyuridine (EdU) assays. Cell cycle and apoptosis were analysed by flow cytometry. Oxidative stress was analysed by measuring reactive oxygen species (ROS), malondialdehyde (MDA), glutathione (GSH), superoxide dismutase (SOD), and catalase (CAT) levels.ResultsKisspeptin was downregulated in the ovarian granulosa cells of PCOS rats compared to those of control rats. Kisspeptin overexpression enhanced KGN cell proliferation and inhibited apoptosis. ROS generation was suppressed by kisspeptin, along with decreased levels of MDA and increased levels of the antioxidants GSH, SOD, and CAT. Kisspeptin activates PI3K/AKT and ERK signalling, and inactivation of ERK1/2 suppresses the protective role of kisspeptin in ovarian granulosa cells.ConclusionKisspeptin improves proliferation and alleviates apoptosis and oxidative stress in ovarian granulosa cells by activating PI3K/AKT and ERK signalling.

Pendidikan Seks Sebagai Pencegahan Perilaku Seksual Beresiko pada Remaja

Adolescence is an important period of life where there is a change from children to adults. Adolescence undergoes many changes such as physical, psychological, Â social and biological changes. Changes that occur in adolescents because of the active start and development of reproductive organ function. Until now, young people still face serious challenges that can destroy their future, namely risky sexual behavior such as premarital sex, prostitution and others that will increase the risk of teenage pregnancy, STD infection and HIV/AIDS. This can be caused by the lack of knowledge and behavior of adolescents caused by the lack of early sex education. The purpose of this activity is to provide health education on the prevention of dangerous behavior in adolescents. One of the efforts to overcome risky adolescent sex behavior is to increase information through the sex education program. This youth sex education is carried out boldly in the form of socialization on sexual risk behavior and its impacts targeting high school youth and university students in Sidoarjo, Surabaya, Mojokerto. and Gresik. After the implementation of health education activities, it was found that most of the people (94%) had good knowledge. This shows that health education about sex education in increasing public knowledge in preventing dangerous behavior in adolescents. The recommendation from this activity is that it is necessary to offer sex health education in an effort to prevent risky behavior in adolescents so that adolescent behavior will be positive so that it does not have unwanted impacts.

The effect of conazoles on reproductive organs structure and function – a review

Conazoles are azole antifungals used in agricultural and pharmaceutical products. Exposure to conazole fungicides leads to several toxic endpoints, including reproductive and endocrine. The results of animal experiments have shown that various conazole fungicides at high doses affect the structure and functions of reproductive organs. In males, adverse effects of conazole fungicides are manifested in the testes, prostate, sperm viability, fertility and sexual behaviour. Reduced testis weight, testis atrophy and reduced or absent sperm production were frequently observed. In female genitalia, structural changes in the ovaries and uterus have been observed. The extent of the changes depends on the dose and duration of treatment. Triazoles affected the expression of multiple genes involved in steroid hormone metabolism and modulate enzyme activity of multiple cytochrome P450 (CYP) and other metabolic enzymes in mammalian liver and other tissues. Conazole fungicides act as endocrine disruptors. Conazoles have been reported to reduce oestradiol and testosterone production and to increase progesterone concentration, indicating the inhibition of enzymes involved in the conversion of progesterone to testosterone. The reproductive effects are consistent with impairment of testosterone homeostasis. The disruption in steroid homeostasis is a common mode of action, leading to abnormal reproductive development and diminished reproductive function. At high doses, azole fungicides affect reproductive organs and fertility in several species.

Effects of Selected Metal Nanoparticles (Ag, ZnO, TiO2) on the Structure and Function of Reproductive Organs.

Various studies have shown that the reproductive organs are highly sensitive to toxic elements found in the environment. Due to technological progress, the use of nanoparticles has become more common nowadays. Nanoparticles are used for drug delivery because their dimensions allow them to circulate throughout the body and enter directly into the cell. Antimicrobial properties are increasingly used in the manufacture of medical devices, textiles, food packaging, cosmetics, and other consumer products. Nanoparticles provide several benefits, but aspects related to their effects on living organisms and the environment are not well known. This review summarizes current in vivo, and in vitro animal studies focused on the evaluation of toxicity of selected metal nanoparticles (Ag, ZnO, TiO2) on male and female reproductive health. It can be concluded that higher concentrations of metal nanoparticles in the male reproductive system can cause a decrease in spermatozoa motility, viability and disruption of membrane integrity. Histopathological changes of the testicular epithelium, infiltration of inflammatory cells in the epididymis, and prostatic hyperplasia have been observed. Nanoparticles in the female reproductive system caused their accumulation in the ovaries and uterus. Metal nanoparticles most likely induce polycystic ovary syndrome and follicular atresia, inflammation, apoptosis, and necrosis also occurred.

Obesity in women: current aspects of reproductive health disorders

Obesity and overweight tend to increase in prevalence in the whole world. Obese people have a higher incidence of cardiovascular diseases, stroke, osteoarthritis, diabetes mellitus and reproductive system diseases. This is especially evident in women. Hormonal imbalances is developed among obese women in the hypothalamic-pituitary-ovarian axis, typically there are menstruation disorders, anovulation and female infertility. Adipose tissue is an endocrine organ, with an intricate role in bioactive molecules secrete, in particularly adipokines, which interact differently with a variety of molecular pathways, contribute to the development of insulin resistance, inflammation, hypertension, increased risk of cardiovascular events, disorders of blood clotting, differentiation and maturation of oocytes. In addition, women with obesity and metabolic syndrome have problems with conception at the endometrial level often, a significantly higher risk of having a miscarriage, and worse assisted reproductive technology outcomes. Obesity has negative effects on the endometrium in non-pregnant women, it is increasing the risk of abnormal uterine bleeding. Hormones derived from adipose tissue could be affected on the function of the uterus/endometrium and, consequently, affect the amount of menstrual blood loss. Contradictory results are observed in patients with endometriosis. The correlation of body mass index to the risk of endometriosis has not been proven in clinical studies, but there was a direct relationship between the severity of endometriosis and a high body mass index. The review presents possible relationships of diseases of the reproductive system with obesity and overweight, determining their development and pathogenesis of disorders of the formation of the functions of reproductive organs.

The effect of heat stress on the cellular behavior, intracellular signaling profile of porcine growth hormone (pGH) in swine testicular cells.

At present, heat stress caused by the thermal environment is the main factor that endangers the reproductive function of animals. Growth hormone (GH) is a polypeptide hormone, the biological function of reproductive organs has been reported, and it has many important physiological functions in the body. However, so far, the behavior and signal transduction of GH in testicular cells under heat stress are still unclear. To this end, in the current work, we use a swine testicular cell line (ST) as an in vitro model to explore the cell behavior and intracellular signaling profile of porcine growth hormone (pGH) under heat stress; the results showed that when cells were under heat stress, pGH and GHR were basically not internalized, and a large number of them accumulated on the cell membrane. In addition, we also studied the effect of pGH on the JAK2-STATs signaling pathway and IGF-1 expression under heat stress, we found that the ability of pGH to activate the JAK-STATs signaling pathway and IGF-1 under heat stress was greatly reduced (p < 0.05). In conclusion, our research shows that when cells undergo heat stress, the internalization of pGH and GHR were inhibited, and the activation of the JAK2-STATs signaling pathway and IGF-1 expression were reduced; this lays a solid foundation for further research on the effect of pGH on swine testicular tissue under thermal environment.

Associations of MCM8 rs3761873 and rs16991617 variants with abnormal uterine bleeding induced by copper intrauterine device.

Intrauterine device (IUD) is a commonly used contraceptive method worldwide. Abnormal uterine bleeding (AUB) is one of the most common side effects of Cu-IUDs. Since AUB varies among Cu-IUD users, changes in the bleeding-related genetic factors may contribute to AUB. This study aimed to determine the genetic risk factors of AUB after Cu-IUD insertion. We conducted a case-control study on women who experienced AUB after Cu-IUD insertion (case:control=62:59). Six candidate variants were genotyped using the Sequenom MassARRAY. Genotype and allele frequencies were analyzed using SHEsisPlus. We performed Pearson's Chi-squared test to analyze categorical data, and ESEfinder to predict the impact on splicing regulation. MCM8 coding sequence variants: rs3761873-A>C was in Exon 7 and rs16991617 A>G was in Exon 12 of all 19 exons, both of which were significantly different between cases and controls (pallele =0.039 and pgenotype =0.092). rs6022 and rs6029 in F5 gene and rs3761873 and rs16991617 in the MCM8 gene showed strong linkage disequilibrium (R2 > 0.8). ESEfinder indicated that the variants of MCM8 may affect the splicing regulation. MCM8 rs376187 and rs16991617 were associated with AUB in Cu-IUDs users. MCM8 may play a role in AUB by regulating functions of reproductive organs and primary ovarian insufficiency. Our findings may improve the understanding of the genetic basis of AUB caused by Cu-IUDs.

Effect of Cannabis Sativa on Spermatogenesis of Male Albino Rats

Abstract-Herbaceous plants have been used as food and medicine since time unknown. Excess of everything is harmful. Many plants may also be harmful if taken for long time and may impair function of reproductive organs i.e. testis and ovary. Cannabis sativa Linn. (Hemp plant), commonly known as "Bhang" or "Marijuana", now cultivated all over India, found wild in Himalayan region. Its preparations mainly 'cannabinoids' used as narcotic and psychotropic (medicinal) drugs. In the present communication, the effect of C. sativa (leaf powder) on spermatogenesis is reported. The leaf powder as aqueous suspension at doses of 50, 100 and 200 mg/kg/day were fed to three groups (dose wise) with a control group (vehicle treated) of male albino rats for 60 days. On day 61st, all the rats were sacrificed. The reproductive organs were taken out from body and processed for histological examination. Both initial and final body weight were recorded. The weight of organs were also taken before autopsy. The weight of reproductive organs were significantly reduced at higher doses. The spermatogenesis was arrested in testes. The seminiferous tubules were disfigured and reduced in size. Their lumen filled with cellular debris. The Leydig's cells were atrophied. The epididymes and vasa deferentia were devoid of spermatozoa. It is concluded that Cannabis sativa is harmful to male reproductive status of animal and human beings.

Heavy Metal Toxicosis and Male Fertility: The Role of Pentahydroxyflavone Quercetin: a Review

&#x0D; &#x0D; &#x0D; The effect of heavy metals (HMs) has been extensively studied. They cause diverse clinical manifestation through various mechanisms. Male fertility is among the most disturbing effect of HMs affecting family life in human and reproduction in animals. Notably among these effects is interference with the reproductive hormones, morphology and function of reproductive organs, sexual behaviors, and the spermiogram. Quercetin is a dietary flavanoid from edible plants and, has proven pharmacological properties in the treatment and management of many disease conditions. Quercetin ameliorates the adverse effects of HMs on male reproductive hormones by increasing the activity of 3β-hydroxysteroid dehydrogenase (3β- HSD) and 17β-hydroxysteroid dehydrogenase (17β-HSD) in the synthesis of testosterone. Quercetin chelates HMs, scavenge free radicals, and other cytotoxicant capable of disrupting the morphology and function of the male reproductive system. Apart from it neuroprotective activity on the pituitary gland and increased steroidogenesis, quercetin mitigate neurotransmitter that aid in copulation and improve histopathological changes in the brain due to HMs toxicity to improve sexual behavior. Quercetin was also found to be effective in increasing sperm count, daily sperm production, mortility, viability, and also decreased in the percentage of abnormal sperm morphology due to HMs toxicity. In conclusion quercetin was found to be effective in mitigating HMs toxicity that affects male fertility, and so, it is recommended to be incorporated into the treatment and management of HMs toxicity. Individuals who are at risk of HMs toxicity should take dietary plants that contain quercetin to minimize the effects of these metals.&#x0D; &#x0D; &#x0D;

Bio-Conductive Polymers for Treating Myocardial Conductive Defects: Long-Term Efficacy Study.

Following myocardial infarction (MI), the resulting fibrotic scar is nonconductive and leads to ventricular dysfunction via electrical uncoupling of the remaining viable cardiomyocytes. The uneven conductive properties between normal myocardium and scar tissue result in arrhythmia, yielding sudden cardiac death/heart failure. A conductive biopolymer, poly-3-amino-4-methoxybenzoic acid-gelatin (PAMB-G), is able to resynchronize myocardial contractions in vivo. Intravenous PAMB-G injections into mice show that it does not cause any acute toxicity, up to the maximum tolerated dose (1.6 mL kg-1 ), which includes the determined therapeutic dose (0.4 mL kg-1 ). There is also no short- or long-term toxicity when PAMB-G is injected into the myocardium of MI rats, with no significant changes in body weight, organ-brain ratio, hematologic, and histological parameters for up to 12months post-injection. At the therapeutic dose, PAMB-G restores electrical conduction in infarcted rat hearts, resulting in lowered arrhythmia susceptibility and improved cardiac function. PAMB-G is also durable, as mass spectrometry detected the biopolymer for up to 12months post-injection. PAMB-G did not impact reproductive organ function or offspring characteristics when given intravenously into healthy adult rats. Thus, PAMB-G is a nontoxic, durable, and conductive biomaterial that is able to improve cardiac function for up to 1year post-implantation.

Research Progress of PCNA in Reproductive System Diseases.

Reproductive system diseases have become a public health problem that endangers human physical and mental health. The causes of reproductive diseases are complex and diverse. From a biological point of view, abnormal cell proliferation may affect important physiological functions of reproductive organs and cause various gynecological or andrological diseases. Proliferating cell nuclear antigen (PCNA) is the most commonly used indicator for detecting cell proliferation activity. The up- or downregulation of its expression is of great significance in reproductive system diseases. This review summarizes the significance of the latest research on PCNA expression in reproductive system diseases.

Optimalisasi Peningkatan Derajat Kesehatan Remaja Melalui Pemberdayaan Masyarakat Kelompok Remaja Dengan Peer Educator di Kelurahan Ladang Bambu Kecamatan Medan Tuntungan

Adolescent individuals are often involved in conflicts and have many problems, both problems with themselves or with the environment outside themselves. Many teenagers are not ready to compensate for the changes they experience, such as physical changes, emotional levels, morals, social interactions and ways of acting and thinking. Recently, during the spread of the coronavirus, many teenagers only spend time sleeping and then wake up to study online or play gadgets. This raises concerns about changes in adolescents' conditions, especially their psychological conditions. Teenagers are preoccupied with online schooling which makes them busier in the virtual world than in the real world. This, not only causes boredom for adolescents, but also has an effect on adolescent mental health, so they need a partner who can help with the problems experienced. This community service intends to improve the degree of adolescent health by empowering adolescents through Peer Education of their own friends within the scope of the organization in the context of monitoring growth and development with tools in the form of Adolescent Health Cards (KMS) and simulations as a vehicle for empowering adolescents in improving peer counselor skills. The approach method offered to solve the problems of program partners that have been agreed upon using a survey approach, namely data collection in Ladang Bambu Village, Medan Tuntungan Subdistrict with observational data collection methods by means of field observation. Implementation is carried out according to a predetermined schedule by gathering teenagers who have become members together. The results of community service have increased knowledge, attitudes, behavior of adolescents about the function of reproductive organs and trained in organization so that peer education can be formed.