Puberty Development Research Articles

Association of childhood obesity with pubertal development in boys: A systematic review and meta-analysis.

Childhood obesity leads to early puberty development in girls, but its effect in boys remains unclear. We conducted a systematic review and meta-analysis to study the association between childhood obesity and puberty development in boys. We included 14 cohort studies with 114,822 boys. Meta-analysis showed that childhood overweight (RR, 1.44; 95%CI, 1.08-1.93; the number of studies [N] = 4) and obesity (RR, 1.35; 95%CI, 1.11-1.64; N = 5) were associated with the earlier occurrence of testicular volume ≥4mL (Tanner stage 2). Age reaching Tanner stage 2 in overweight boys was earlier than normal-weight boys (mean difference: -0.23 years, 95% CI: -0.37 to -0.08; N = 2); a similar trend was observed in obese boys, but the effect estimate did not reach significance level (mean difference: -0.27 years, 95% CI: -0.59 to 0.05; N = 3). Similarly, the age at pubarche in boys with overweight/obesity was earlier than those with normal weight. Qualitative analysis shows first nocturnal emission; change in voice and peak height velocity in boys with overweight/obesity appeared to develop earlier than those with normal weight. These findings suggest overweight/obesity is associated with earlier pubertal development in boys. Due to the limited number of studies identified in this review, further studies are warranted to confirm these associations.

The clinical characteristics of Hirayama disease in females

IntroductionTo characterize Hirayama disease in female patients, and increase awareness among clinicians regarding the specifics of this disease. MethodsBaseline data, clinical manifestations, characteristics of cervical-flexion magnetic resonance imaging, and electromyography were collected and compared among females and males with Hirayama disease. In addition, the literature on Hirayama disease in females up to October, 2021 was searched in PubMed and the relevant data were compared with the data from our study. ResultsTwenty female and 40 male patients were included in this study. The average ages of onset and menarche were 14.65 and 12.75 years old. All patients suffered from muscular weakness and atrophy of the upper limb(s), with flattening and/or atrophy of the lower cervical spinal cords in cervical-flexion magnetic resonance imaging, and neurogenic patterns in the atrophic muscles as determined using electromyography. The age of onset in females was about 2 years later than the age of menarche, and the age of onset in females was 2 years earlier than that in males. There were no obvious differences in clinical presentation between males and females. DiscussionAlthough females presented with Hirayama disease two years earlier than males, no other clinical differences were observed. Hirayama disease is likely associated with growth and development in puberty, and early identification, regardless of whether patients are male or female, is critical to optimizing prognosis.

Evaluation of the Safety and Efficacy of Curcumin-Synthesized Silver Nanoparticles in Rats Exposed to Chlorpyrifos During Puberty Development.

Silver nanoparticles (Ag-NPs) have garnered significant attention in recent years due to their therapeutic effects. Curcumin (CUR) has been utilized as a coating agent for synthesizing Ag-NPs, intended to act as a potential drug. This study was designed to evaluate the safety and efficacy of curcuminsynthesized silver nanoparticles on rats exposed to chlorpyrifos (CPF) during their pubertal development. Forty-two male Wistar rats, 23 days old, were selected and randomly divided into 7 groups (n=6) as follows: positive control, negative control, CPF (5 mg/kg), silver nanoparticles synthesized using curcumin at 40 μg/kg (CUR-Ag-NPs 40), CUR-Ag-NPs 80, CPF+ CUR-Ag-NPs 40, CPF+ CUR-AgNPs 80. All treatments were administered via gavage for 30 days. At the end of the study, rats were anesthetized using ketamine (50 mg/kg), and xylazine, (10 mg/kg) and blood was collected from the heart for serum analysis of liver enzymes, urea, and creatinine. Liver and kidney tissues were isolated for histopathological analysis. No significant differences were observed in serum levels of AST, ALT, and ALP enzymes as well as urea and creatinine levels among the different groups. Light microscopy observation revealed multifocal inflammatory mononuclear cell subsets in liver tissue associated with mild inflammatory mononuclear cell infiltration in the portal region in CPF, CUR-Ag-NPs 40, CUR-Ag-NPs 80, CPF+CUR-Ag-NPs 40, and CPF+CUR-Ag- NPs 80 groups. Histological examination of kidney tissue showed degenerative changes in the tubular epithelium, congestion, and mild infiltration of mononuclear inflammatory cells in the renal interstitial tissue in the CPF group, CUR-Ag-NPs 40, CUR-Ag-NPs 80, CPF+CUR-Ag-NPs 40 and CPF+CUR-Ag-NPs 80 groups. This study failed to establish the safety and efficacy of CUR-Ag-NP at 40 and 80 μg/kg in prepubertal rats exposed to CPF. However, further studies should be conducted to thoroughly characterize the efficacy of CUR-Ag-NP in developmental animal models.

6544 M6A methylation of PLCβ in the hypothalamus regulates GnRH synthesis and secretion by interfering Ca2+ signaling pathway

Abstract Disclosure: X. Yin: None. S. Zang: None. P. Li: None. Backgrounds: In recent years, the incidence of precocious puberty has increased rapidly, posing a serious threat to girls' physical and mental health. Epigenetic changes, especially m6A methylation modification, may be an important influencing factor. Researches had found that m6A modification plays an irreplaceable role in the development and functional homeostasis of the nervous system. A variety of factors could changed RNA m6A level in the hypothalamus and affect the process of adolescent sexual development. In the study,we aimed to explore the specific role of m6A methylation in precocious puberty, and to identify its downstream target genes by multi-omics approach and to verify its function. Hypothesis The demethylase FTO regulated the m6A modification of the target gene in the hypothalamus to affect the synthesis and secretion of GnRH and regulate the initiation of puberty. Methods: The modification abundance of m6A was investigated by the girls with central precious puberty (CPP). The changes of m6A modification in total RNA and the expression of important modulator genes were detected by colorimetry and qRT-PCR respectively in the hypothalamic ARC nucleus of female rats at three different developmental stages (juvenile, early puberty and puberty) and precocious rat model. MeRIP and mRNA sequencing was used to screen target genes which related to puberty development. Knockdown or overexpression of FTO were constructed using plasmid or lentivirus transfection. The target mRNA targeted regulated by FTO was verified with RNA-seq, qRT-PCR, WB and Flow cytometry. Results This study confirmed that the level of RNA m6A in the peripheral blood of the precocious group was significantly higher than that of the control group. The level of RNA m6A in the hypothalamus of female rats gradually increases with the development of puberty, and the expression of demethylase gradually decreases. MeRIP-seq combined with mrNA-seq screening analysis showed that the m6A modification of PLCβ in the ARC nucleus of the hypothalamus was reduced, and its mRNA expression was significantly increased in sexually precocious female rats. Combined with bioinformatics analysis, it was found that there were multiple m6A modified motif sites on the mRNA of PLCβ, and luciferase experiment confirmed that there was a regulatory relationship between them. After over-expressing FTO, the mRNA and protein expression of PLCβ were significantly increased, and the up-regulation of FTO expression induced a significant increase in intracellular Ca2+ concentration, the expression of CAM, and the activation of Ca2+ signaling pathway. Conclusions In the ARC nucleus of the hypothalamus, FTO affects the synthesis and secretion of GnRH by regulating the m6A modification level of PLCβ through the Ca2+ signaling pathway, and interferes with the initiation of female sexual development. Presentation: 6/1/2024

Complete Androgen Insensitivity Syndrome in a Young Girl with Primary Amenorrhea and Suspected Delayed Puberty: A Case-Based Review of Clinical Management, Surgical Follow-Up, and Oncological Risk.

Background: Complete androgen insensitivity syndrome (CAIS) is a rare disorder of sex development characterized by 46,XY karyotype and testes, yet presenting with a complete female phenotype, which is related to mutations in the androgen receptor (AR) gene. Case presentation: We herein present the case of a 14-year-old adolescent with primary amenorrhea and suspected delayed puberty whose diagnostic journey led to the identification of CAIS through the demonstration of a novel AR variant (c.159_207del). Case-based review: Our report encompasses the complexity of CAIS management, focusing on the risk of malignancy, surveillance options, hormone replacement therapy, timing of an eventual gonadectomy, and the psychosocial impact of such a diagnosis. An algorithm has been formulated for the management of CAIS starting in adolescence, highlighting the conservative approach for those patients unwilling to undergo gonadectomy. Conclusions: Primary amenorrhea and delay in puberty development may provide clues, ultimately leading to a diagnosis of CAIS. This review emphasizes the cruciality of a multidisciplinary approach in managing patients with CAIS, needing for an individualized care to optimize the overall outcome.

Assessment of the efficacy of a gonadotropin releasing factor (GnRF) analog to suppress ovarian function in gilts under pre-clinical and clinical conditions.

The administration of a gonadotropin releasing factor (GnRF) analog to pigs has proven to induce antibodies against endogenous GnRF. In gilts (young female pigs), the subsequent blocking of GnRF activity by specific antibodies results in a temporary suppression of ovarian activity and sexual maturation. One pre-clinical and two clinical studies were conducted to assess the ability of the GnRF analog to produce immunologically suppression of the ovarian function, preventing gilts from reaching puberty before harvest, at 27 weeks of age. In the three studies, a significant reduction of size and weight of reproductive organs and gilts in oestrus was demonstrated in vaccinated gilts compared with intact gilts. A significant increase in anti-GnRF antibody levels in sera was observed after the 2nd dose, which lasted until the end of the study in each of the protocols used. Progesterone levels were significantly reduced from 6 to 8 weeks after 2nd vaccination in clinical studies 2 and 1 respectively, and from 6 weeks after 2nd vaccination in the pre-clinical study. Estradiol levels were below the limit of detection for clinical study 2 and significantly reduced in vaccinated gilts at the end of the pre-clinical study and the clinical study 1. Vaccination of gilts with a GnRF analog with two different protocols (1st dose from 10 to 14 weeks of age, and a 2nd dose 8 or 4 weeks later) was effective in reducing the development of puberty for at least 9 weeks post 2nd dose. These results confirm the flexibility of vaccination programs for veterinarians and producers which can be adapted to pig management practices in commercial farms.

Association of screen exposure/sedentary behavior and precocious puberty/early puberty.

In recent years, with the development of society, children's daily exposure to screen time has gradually increased. Screen exposure and sedentary behavior have brought a host of harms to children's lives. The aim of this study was to explore the effects of screen exposure and sedentary behavior on precocious puberty and early development. This is a cross-sectional study in the school-based population. A total of 3,560 children were recruited from Qufu City, Shandong province using multistage stratified cluster random sampling. All study subjects had a physical examination by professional pediatricians in October 2019, and were investigated with health questionnaires. Precocious puberty is defined as development of secondary sexual signs in boys before 9 years or in girls before 8 years. Screen time was calculated as the average of screen time on weekdays and weekend days, and sedentary time was calculated as the average of sedentary time on weekdays and weekend days. After adjusting for potential confounders, logistic regression was used to examine the association between screen exposure and sedentary behavior and early puberty and precocious puberty. Sedentary time was a risk factor for precocious puberty and early development (OR = 1.428, 95% CI = 1.087-1.876) in girls without adjustment. No significant association was found between screen exposure and early puberty and early development both in girls and boys. Excessive sedentary behavior was associated with an increased risk of early puberty, especially in girls, while there was no significant association between screen exposure and early puberty and early development. In addition, further longitudinal investigations are needed to determine the causal relationship between screen exposure, sedentary behavior and precocious puberty.

The experience of transfeminine adolescents and their parents regarding fertility preservation via testicular sperm extraction (TESE): a qualitative study.

How do transfeminine adolescents and their parents experience fertility preservation via testicular sperm extraction (TESE)? Participants experienced the TESE process positively when provided with appropriate guidance to navigate the decisional dilemma between preserving future biological parenthood and the pressure to start puberty suppression early. Sperm banking through ejaculation is not feasible for all transfeminine adolescents due to genital dysphoria and early puberty; for this group, TESE is the only alternative. However, during early puberty, they must postpone or pause puberty suppression until spermatogenesis is fully developed. All consecutive TESE patients in our centre and their parents were invited to participate. Between December 2022 and May 2023, we included 6 adolescents and 10 parents. We used a qualitative approach based on semi-structured interviews to study the experience of the transfeminine adolescents and their parents. Transfeminine adolescents diagnosed with gender dysphoria in early puberty (Tanner stage ≥2) who underwent TESE before the start of puberty suppression or gender-affirming hormones participated in this study. The interviews were recorded, manually transcribed and analysed using reflective thematic analysis focusing on understanding the participants' experiences of puberty and fertility preservation and the various factors and social processes influencing their decision to undergo TESE. Transfeminine adolescents decide to undergo invasive fertility preservation because of a possible, future desire for parenthood. Parents stressed the importance of preventing future decisional regret. They both saw masturbation to obtain a semen sample as unreachable. Even though TESE is a surgical procedure with possible complications and pain afterwards, this alternative seemed less dysphoric to them.Adolescents had to postpone the start of puberty suppression, waiting for spermatogenesis to complete. Given the unpredictable development of puberty, they felt a lot of stress and anxiety during this period and were primarily concerned about the lowering of their voice. Because of this puberty-related stress, they were constantly balancing their motivations for fertility preservation against the early start of puberty suppression to prevent unwanted irreversible pubertal body changes. To support this decisional dilemma, adolescents and their parents need adequate communication with each other and their healthcare providers to reflect on their stress for pubertal change. Furthermore, close, continuous surveillance of their current mental state by their parents, together with their psychologist and pubertal development by their physicians, is needed. Despite the challenging decision and postponement of puberty suppression, they retrospectively experienced it positively without any regret. All adolescents successfully underwent TESE, with viable spermatozoa obtained and without complications. This may result in a more positive reflective experience regarding fertility preservation. Furthermore, the perspectives of adolescents with the intention of TESE but who already started with puberty suppression before the preservation were not included. This study helps healthcare providers improve their counselling and guidance of transfeminine adolescents who consider postponing puberty suppression for fertility preservation via TESE. The adolescents and their parents know more clearly what to expect during fertility preservation. Specific peer-support programs may facilitate the decision process for upcoming adolescents. No external funding was used for this study. None of the authors have any conflicts of interest. Not applicable.

Impacts of tolylfluanid on implantation and placental development: Disruption of mitochondrial function and implantation-related gene expression in vitro and in vivo

Tolylfluanid is a widely used pesticide and antifouling agent in agricultural and marine industries and is recognized as a potential endocrine disruptor. However, the toxicological effects of tolylfluanid on the placenta development was not elucidated. This study used trophoblastic cell (HTR-8/SVneo cell) and endometrial cell (T HESCs) lines as in vitro model and mouse models as in vivo model to investigate the toxic effects of tolylfluanid on implantation-associated cell and placenta development during early pregnancy. Experimental results indicated that both cell lines exhibited reduced viability upon tolylfluanid exposure. Various in vitro experiments were conducted at <1 mg/L concentration. The results indicate that tolylfluanid can arrest cell cycle and induce apoptosis in endometrial and trophoblastic cells, abnormally regulate Ca2+ homeostasis and MAPK signaling pathways, and disrupt mitochondrial function. In vivo experiments, subchronic tolylfluanid exposure to mouse during puberty and pregnancy period impaired placenta development, resulting in reduced fetal and placental weight, abnormal placental structures, and altered gene expression. Specifically, a decrease in the ratio of labyrinth/junctional zones and changes in placenta gene expression patterns after tolylfluanid exposure were similar to characters of adverse pregnancy outcomes such as preeclampsia and fetal growth restriction (FGR). This study suggests that tolylfluanid exposure may have negative outcomes on female reproduction, and highlights the need for stricter regulation and monitoring of tolylfluanid use to protect women's reproductive health. This is the first study indicating the adverse effects of tolylfluanid on implantation and placental development during pregnancy.

Adult-Onset Case of Female Idiopathic Hypogonadotropic Hypogonadism and Ataxia: Genetic Background

Adult-onset cases of idiopathic hypogonadotropic hypogonadism (IHH) are characterized by partial or normal puberty development until adolescence and by the impairment of the hypothalamic–pituitary–gonadal (HPG) axis in adulthood. WDR11 and DCC genes are known to be involved in axonal development, particularly of hypothalamic GnRH neurons, and ciliogenesis. We report a female case of adult-onset hypogonadism and cerebellar ataxia, in which we identified two gene mutations. A panel of 48 genes was set up to search for variants in the causative genes of CHH. The variants found were analyzed following the American College of Medical Genetics and Genomics (ACMG) criteria to define their pathogenicity. We identified a missense heterozygous variant in the WDR11 gene NM_018117.12:c.2306T&gt;G (p.Met769Arg) and a mutation in a second gene DCC resulting in amino acid substitutions NM_005215.4:c.3533C&gt;T (p.Ser1178Phe). These variants were classified as being of uncertain clinical significance. We assume that there is a link between the variants found and the impairment of the gonadotrophic and neurological phenotype of the patient. Therefore, we propose the genetic test to identify the best therapeutic approach to identify infertility in female patients with IHH; we believe it is necessary to test WDR11 and DCC genes in larger populations with the same condition to introduce it in future protocols of assessment.

Perkembangan Masa Puber

Puberty development is a significant transitional phase in an individual's life, characterized by complex physical, emotional, and psychological changes. This research aims to explain the process of puberty development from various perspectives, including the influencing factors and their impact on individuals. The research method involves synthesizing literature from various sources to provide a comprehensive picture of the changes that occurred during this time. It is hoped that the findings from this research will provide a deeper understanding of the challenges individuals face during puberty as well as their potential implications in the context of education, health and personal development.

Effective and appropriate use of weight loss medication in pediatric obesity: a narrative review.

Over the past few decades, there has been a notable increase in the incidence of pediatric obesity, which is a significant public health concern. Children who are obese have a greater risk of type 2 diabetes, hypertension, dyslipidemia, polycystic ovary syndrome, obstructive sleep apnea, and adult obesity. Lifestyle modification therapy is typically the initial approach to treat pediatric obesity. For patients who do not achieve success with lifestyle modification therapy alone, pharmacotherapy is the next logical treatment option. When selecting an anti-obesity medication (AOM), it is essential to first ascertain the medical background of the patient, including current medications and obesity-associated comorbidities. Evaluation of obesity phenotypes in patients may also be beneficial. AOMs for pediatric obesity include metformin, orlistat, glucagon-like peptide 1 agonists, phentermine, and the phentermine/topiramate combination. Sufficient lifestyle modification therapy should be administered before considering pharmacotherapy and continued after the initiation of AOM. To ensure healthy development, monitoring growth and puberty development during anti-obesity treatments is essential.

Retrospective evaluation of patients diagnosed with central precocious puberty who reached the final height.

Central precocious puberty (CPP) is the onset of puberty before the age of 8 in girls and 9 in boys. The primary goal of CPP treatment is control and arrest of puberty development. In this study, it was aimed to determine the factors associated with final height in patients who received gonadotropin-releasing hormone analogs (GnRHa) treatment and reached their final height. From the medical records of the patients, age on admission, bone age (BA), weight-standard deviation score (SDS), height-SDS, BMI-SDS, target height-SDS, basal LH, FSH, E2, age at menarche, and pelvic USG findings were obtained. The mean age on admission of the 67 female patients was 7.5 ± 0.60 years. On admission, 4.5 % of the patients were obese and 19.4 % were overweight. There was no difference between BMI-SDS at admission and after treatment. The mean age at menarche was 11.57 ± 0.78 years. About 58.2 % of the patients reached the target height, 35.8 % exceeded the target height, and 6 % were below the target height. The mean height-SDS and predicted adult height (PAH) on admission were better in patients who exceeded the target height. It was determined that target height-SDS had a positive effect on delta height-SDS, while BA/CA ratio had a negative effect. It was found that GnRHa treatment did not have a negative effect on BMI-SDS. It was shown that 94 % of the patients who received GnRHa treatment reached the target height, and in fact, 35.8 % exceeded the target height. A greater final height may be associated with good height-SDS and PAH values on admission.

Lipid Profile and Triglyceride-Glucose Index (TyG) Alterations in a Single-Center Cohort of Children Diagnosed with Central Precocious Puberty.

Background: A correlation between plasma lipids and timing of pubertal development has been hypothesized, though lipid influence remains unclear in central precocious puberty (CPP). Aim: To assess any possible alterations in the lipid profile and triglyceride glucose index (TyG) in children diagnosed with CPP. Patients and Methods: Retrospective single-center study conducted on children (aged 6.3 ± 2.1 years) evaluated for the suspicion of CPP. Results: Based on the results of the gonadotropin releasing hormone (GnRH) test, considering 5 IU/L as cut-off of the luteinizing hormone peak, CPP was confirmed in 43 patients (57.3%). Sixteen (37.2%) had a pathologic body mass index (BMI), with 9 (20.9%) being overweight and 7 (16.27%) obese. High total cholesterol was found in 3 patients with CPP (6.97%), high triglycerides were found in 11 patients with CPP (25.58%), high LDL cholesterol was found in 5 patients with CPP (11.62%), low HDL cholesterol was found in 12/43 patients with CPP (27.9%), a pathologic TyG was found in 13/43 patients with CPP (30.23%). No significant association was observed in the lipid profile for patients with or without CPP, except for HDL cholesterol, which was lower in the CPP group (47.1 ± 10.9; p = 0.033). However, the association between serum HDL cholesterol and CPP was not confirmed at the multivariate logistic regression analysis adjusted for patients' sex and age (p = 0.1; OR: 1.035; 95% CI: 0.993-1.078). Conclusion: The overall lipid profile of our pediatric patients diagnosed with CPP did not differ from patients having idiopathic precocious thelarche or normal variants of puberty development.

Management of dairy heifers in Uruguay

Management practices during the rearing of dairy heifers should allow an adequate body growth and reproductive development to attain puberty several months before the first conception. Proposed target age and body weight (BW) at first calving for Holstein heifers are between 22-24 months and 82% of mature BW, respectively, for which heifers must conceive at around 15 months of age with 60% of their mature BW. Pre- and postweaning feeding level has effects on feed efficiency, behavior, energy metabolism and body and reproductive development, while social environment during rearing, specifically the social dominance and social regroupings, is known to affect energy metabolism, feeding behavior and body and reproductive development of the heifer. In Uruguay, the information published regarding the management of the dairy heifer is scarce. The aim of this review is to briefly assess the main factors affecting the onset of puberty, and to present an integrative approach of the information generated in Uruguay regarding the effects of modifying the feeding level and social environment during the rearing period on body development, metabolism, and onset of puberty in dairy heifers. In addition, we make a proposal of knowledge gaps that should be addressed in future studies.

Zhibai dihuang pill (ZBDH) exhibits therapeutic effects on idiopathic central sexual precocity in rats by modulating the gut microflora

To reveal the role of gut microbiota (GM) in the occurrence and development of idiopathic central precocious puberty (ICPP) using 16S rDNA sequencing and bioinformatics analysis. The Danazol-induced ICPP model was successfully constructed in this study. ZBDH and GnRHa treatments could effectively inhibit ICPP in rats, as manifested by the delayed vaginal opening time, reduced weight, decreased uterine organ coefficient, and decreased uterine wall thickness and corpus luteum number, as well as remarkably reduced serum hormone (LH, FSH, and E2) levels. According to 16S rDNA sequencing analysis results, there was no significant difference in the GM community diversity across different groups; however, the composition of the microbial community and the abundance of the dominant microbial community were dramatically different among groups. ZBDH and GnRHa treatments could effectively reduce the abundance of Muribaculateae and Lactobacillus and promote Prevotella abundance. ZBDH and GnRHa were effective in treating Danazol-induced ICPP model rats. The therapeutic effects of ZBDH and GnRHa could be related to the changes in GM in rats.

Dietary Contribution to the Development of Precocious Puberty in Children

This study examined seven dietary factors contributing to precocious puberty in 200 children, with an age and gender-matched control group of 200 healthy children. The case group was classified according to Traditional Chinese Medicine principles; their dietary habits were investigated by questionnaire, with dietary statistics compiled for each Traditional Chinese Medicine evidence group. The χ2 test revealed a statistically significant higher exposure in the case group to five factors, namely frequent consumption of nutritional supplements, foods with high hormone content, anti-seasonal fruits and vegetables, products with high trace elements of zinc, and foods packaged in plastic (P &lt; 0.01 or P &lt; 0.05). The results of logistic regression analysis showed that frequent consumption of nutritional supplements (odds ratio = 13.558), foods containing high levels of hormones (odds ratio = 11.829), anti-seasonal fruits and vegetables (odds ratio = 8.114), products containing high trace elements of zinc (odds ratio = 6.734 ), and plastic wrapped food (odds ratio = 3.419) were high-risk factors; the order of preference in dietary habits was as follows: salty &gt; greasy &gt; sweet &gt; spicy &gt; cold &gt; hot &gt; light.

Cryptorchidism and puberty.

Cryptorchidism is the condition in which one or both testes have not descended adequately into the scrotum. The congenital form of cryptorchidism is one of the most prevalent urogenital anomalies in male newborns. In the acquired form of cryptorchidism, the testis that was previously descended normally is no longer located in the scrotum. Cryptorchidism is associated with an increased risk of infertility and testicular germ cell tumors. However, data on pubertal progression are less well-established because of the limited number of studies. Here, we aim to review the currently available data on pubertal development in boys with a history of non-syndromic cryptorchidism-both congenital and acquired cryptorchidism. The review is focused on the timing of puberty, physical changes, testicular growth, and endocrine development during puberty. The available evidence demonstrated that the timing of the onset of puberty in boys with a history of congenital cryptorchidism does not differ from that of non-cryptorchid boys. Hypothalamic-pituitary-gonadal hormone measurements showed an impaired function or fewer Sertoli cells and/or germ cells among boys with a history of cryptorchidism, particularly with a history of bilateral cryptorchidism treated with orchiopexy. Leydig cell function is generally not affected in boys with a history of cryptorchidism. Data on pubertal development among boys with acquired cryptorchidism are lacking; therefore, more research is needed to investigate pubertal progression among such boys.

Association of Traditional dietary pattern with early and precocious puberty: a population-based cross-sectional study.

Precocious puberty is an endocrine disease that is diagnosed by sex, age, and Tanner stage of puberty. This study aimed to investigate the association between various dietary patterns and early or precocious puberty, especially Traditional dietary patterns, which have been rarely investigated. A total of 4085 primary school students in grades 1-3 (6-9 years) completed individual characteristic surveys, health examinations, and food frequency questionnaires (FFQs). Physical examinations were also conducted to assess obesity and pubertal onset. Traditional, Westernized, and Protein dietary patterns were determined by factor analysis, and their associations with pubertal onset were analyzed by multiple logistic regression analysis. Compared to the other two patterns, children who predominant the Traditional dietary pattern were protectively associated with precocious puberty (OR = 0.72, 95% CI = 0.55, 0.94), even after adjusting the confounders (OR = 0.66, 95% CI = 0.48, 0.89). Neither the Westernized nor Protein dietary pattern demonstrated an association with pubertal onset. The Traditional dietary pattern was negatively associated with children's weight status, classified by body mass index (BMI), and was positively associated with parental education. The maternal education and the Protein dietary pattern were negatively related. Traditional dietary patterns were protective associated with early and precocious puberty among Chinese children. The Traditional dietary pattern was protective associated with early puberty or precocious puberty in children, as found in large-scale population-based public health research. Current research primarily focuses on Westernized dietary patterns, and we studied Traditional dietary patterns to further explore the influence of food on children's puberty development. We discovered that children's preference for Traditional dietary patterns is protective of pubertal development, which implies that society and parents can benefit from diet guidance to protect children's natural development during adolescence.

Accelerated Early Childhood Growth Is Associated With the Development of Earlier Adrenarche and Puberty.

Small birth size and increased postnatal growth have been associated with earlier timing of adrenarche and puberty, but it is not well known whether these factors alone or together lead to earlier maturation. This work aimed to search for different growth trajectories using a clustering approach to analyze the effects of birth size and postnatal growth on adrenarchal and pubertal development. Altogether 351 children (48% girls) were examined prospectively at ages 6 to 9 and 9 to 11 years. Birth and early-growth data were collected retrospectively. Main outcome measures included clinical signs of adrenarche and puberty, and serum androgen concentrations (dehydroepiandrosterone, dehydroepiandrosterone sulfate, androstenedione, testosterone). We detected 4 clusters with different birth sizes and postnatal growth trajectories: 1) children with average birth size and increased postnatal growth (AI), 2) children with small birth size and increased postnatal growth (SI), 3) children with average birth size and postnatal growth (AA), and 4) children with small birth size and average postnatal growth (SA). Thelarche at age 9 to 11 was most common and serum androgens at ages 6 to 9 and 9 to 11 years were highest in girls belonging to the AI and SI groups. Similar patterns in the onset of puberty and in androgen levels were not seen in the SA group. Increased early growth and weight gain predict higher serum androgen concentrations and earlier onset of puberty in girls. Adrenarche and puberty do not appear to be shifted earlier in children with small birth size who do not have catch-up growth.