Long-term follow-up results of testicular torsion in children.

A retrospective cohort study was conducted at the Children's Hospital of Chongqing Medical University from November 2004 to December 2020 to investigate the long-term follow-up results after testicular torsion (TT) in children. Boys with TT were divided into the salvage orchiopexy group and the orchiectomy group, and the baseline characteristics, ultrasonographic indications, intraoperative findings, testicular volumes, and adverse events during follow-up were compared. A total of 145 cases were included in this study.

Diagnosis, treatment, outcome, and reasons for delayed treatment of cryptorchidism with torsion in children: a 16-year retrospective study in a large pediatric medical center.

We describe and summarize the diagnosis, treatment, and reasons for delayed treatment of children with cryptorchidism torsion in Children's Hospital of Chongqing Medical University. The study included 19 cases of cryptorchidism torsion. The age of the children ranged from 16 days to 12 years (median: 6 years).

The gut-microbiota-testis axis mediated by the activation of the Nrf2 antioxidant pathway is related to prepuberal steroidogenesis disorders induced by di-(2-ethylhexyl) phthalate.

Di-(2-ethylhexyl) phthalate (DEHP) is a common plasticizer, which is known to be an environmental endocrine-disrupting chemical that can jeopardize the male reproductive system. Prepuberal exposure to DEHP leads to steroidogenesis disorders. However, the specific mechanism remains ambiguous.

Increased m6A RNA modification is related to the inhibition of the Nrf2-mediated antioxidant response in di-(2-ethylhexyl) phthalate-induced prepubertal testicular injury.

Di-(2-ethylhexyl) phthalate (DEHP) is a common environmental endocrine disrupting chemical that may induce male reproductive disorders. Exposure to DEHP at a prepubertal stage could lead to prepubertal testicular injury, but the underlying mechanisms remain unclear. In this study, we exposed Sprague-Dawley rats to 0, 250, and 500 mg DEHP per kg body weight per day at the prepuberty stage from postnatal day 22 (PND 22) to PND 35 by oral gavage.

Automobile exhaust-derived PM induces blood-testis barrier damage through ROS-MAPK-Nrf2 pathway in sertoli cells of rats.

Particulate matter with an aerodynamic diameter of less than 2.5 μm (PM) derived from automobile exhaust can lead to serious male spermatogenesis dysfunction, but its specific molecular mechanism is unclear. In this experiment, we focused on the blood-testis barriers (BTB) and explored the intracellular mechanisms underlying the fertility toxicity of PM originating from automobile exhaust in the primary cultured Sertoli cells(SCs) of rats.

Incidence characteristics of testicular microlithiasis and its association with risk of primary testicular tumors in children: a systematic review and meta-analysis.

Background: To systematically evaluate the incidence characteristics of testicular microlithiasis (TM) in children and its association with primary testicular tumors (PTT).

Methods: A systematic review and meta-analysis were conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-analysis (PRISMA) statement. A priori protocol was registered in the PROSPERO database (CRD42018111119), and a literature search of all relevant studies published until February 2019 was performed.

Clinical and socioeconomic factors associated with delayed orchidopexy in cryptorchid boys in China: a retrospective study of 2423 cases.

We investigated the associations of clinical and socioeconomic factors with delayed orchidopexy for cryptorchidism in China. A retrospective study was conducted on cryptorchid boys who underwent orchidopexy at Children's Hospital at Chongqing Medical University in China from January 2012 to December 2017. Of 2423 patients, 410 (16.

Spermatogenesis dysfunction induced by PM from automobile exhaust via the ROS-mediated MAPK signaling pathway.

Long-term exposure to particulate matter 2.5 (PM) from automobile exhaust impairs spermatogenesis through oxidative stress injury, but the underlying mechanism is unknown. To investigate the toxic mechanism of PM-induced spermatogenesis impairment, we focused on the MAPK signaling pathway.

DEHP exposure destroys blood-testis barrier (BTB) integrity of immature testes through excessive ROS-mediated autophagy.

Di-(2-ethylhexyl) phthalate (DEHP), is known to impair testicular functions and reproduction. However, its effects on immature testis Blood-testis barrier (BTB) and the underlying mechanisms remain obscure. We constructed a rat model to investigate the roles of autophagy in BTB toxicity induced by DEHP.

Management of undescended testis may be improved with educational updates and new transferring model.

Background: To investigate whether management of undescended testis (UDT) may be improved with educational updates and new transferring model among referring providers (RPs).

Methods: The age of orchidopexies performed in Children's Hospital of Chongqing Medical University were reviewed. We then proposed educational updates and new transferring model among RPs.

Testicular developmental impairment caused by flutamide-induced and DEHP-induced cryptorchid rat models is mediated by excessive apoptosis and deficient autophagy.

Background: Cryptorchidism is a common condition of childhood, and it is known to impair fertility potential. However, the underlying mechanisms remain unclear.

Methods: This study constructed two cryptorchid rat models to investigate the roles of apoptosis and autophagy in testicular impairment induced by cryptorchidism.

Urban fine particulate matter (PM2.5) exposure destroys blood-testis barrier (BTB) integrity through excessive ROS-mediated autophagy.

Context: Blood-testis barrier (BTB), constituted by tight junctions (TJs), adherens junctions and gap junctions, is important for spermatogenesis. PM2.5 is known to impair testicular functions and reproduction.

Diagnosis and treatment of urethral prolapse in children: 16 years' experience with 89 Chinese girls.

Objective: To review our experience and results in the diagnosis and treatment of urethral prolapse (UP) in Chinese girls.

Patients And Methods: We conducted a retrospective chart review of 89 consecutive girls (aged <16 years) with UP and without other complications, who received treatment for UP from January 1999 to January 2015 (a study period of 16 years) at the Children's Hospital of Chongqing Medical University, China. Data analysed included: age, symptoms, clinical findings, predisposing factors, management, and outcomes.

Urban fine particulate matter exposure causes male reproductive injury through destroying blood-testis barrier (BTB) integrity.

Blood-testis barrier (BTB) provides a suitable microenvironment for germ cells that is required for spermatogenesis. Exposure to particulate matter (PM) is recognized to occasion male reproductive impairment, but the mechanism of which remains unclear. Male Sprague-Dawley (SD) rats were used to establish animal models with PM exposure concentration of 0, 10, and 20mg/kg.

A 22-year retrospective study: educational update and new referral pattern of age at orchidopexy.

Objectives: To determine the current age at orchidopexy in China and whether changing targets have altered practice, as research suggesting progressive deterioration in an undescended testis (UDT) has led to the reduction in the target age for orchidopexy to 6-12 months but it is still unknown whether changing targets have altered practice.

Patients And Methods: The demographics of orchidopexies performed in the Children's Hospital of Chongqing Medical University between 1993 and 2014 were reviewed. A survey of the general publics' awareness of UDT and survey of primary healthcare practitioners' current opinion on age at orchidopexy and referral patterns were performed.

[Testicular teratoma in children: Analysis of 64 cases].

Objective: To improve the diagnosis and treatment of testicular teratoma in children by analysis of clinical data.

Methods: We retrospectively analyzed the clinical data about 64 cases of testicular teratoma treated in the Children's Hospital of Chongqing Medical University from 1995 to 2014.

Results: Sixty-one of the cases presented painless scrotal mass with a sense of bearing down and the other 3 cases were confirmed because of empty scrotum diagnosed as cryptorchidism.

[Di-(2-ethylhexyl) phthalate increases the DNA methylation level of genomes in the mouse testis].

Objective: To investigate the effect of the exposure to di- (2-ethylhexyl) phthalate (DEHP) during pregnancy on the DNA methylation level of genomes in the testis of the offspring in mice.

Methods: Pregnant KM mice were randomly divided into three groups, normal control, corn oil and DEHP-exposed. Corn oil and DEHP (500 mg/[kg x d]) were administrated respectively from gestation day 12.

Transforming growth factor-beta3 expression up-regulates on cleft palates induced by 2,3,7,8-tetrachlorodibenzo-p-dioxin in mice.

2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) has been shown to induce cleft palate, in which the molecular etiology of the defect is poorly characterized. Recently, transforming growth factor-beta3 (TGF-beta3) has been indicated to play an essential role in the development of palatal shelves. In this developmental toxicity study, we investigated the effects of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) on the expression of TGF-beta3 in fetal mice.

[Effects of Di (2-ethylhexyl) phthalate on the testis and testicular gubernaculum of fetal KM mice].

Objective: To explore the effects of Di (2-ethylhexyl) phthalate (DEHP) on the testis and testicular gubernaculum of fetal KM mice in vivo and to investigate the mechanism of DEHP-induced cryptorchidism.

Methods: Thirty healthy pregnant KM mice were randomly and equally divided into a blank control group, a corn oil control group and a DEHP group. The pregnant mice in the latter group were exposed to DEHP by gavage at the dose of 500 mg/kg body weight per day from gestation day 12 (GD12) through gestation day 19 (GD19).

Rapid separation and analysis of six organic acids in Bayer liquors by RP-HPLC after solid-phase extraction.

A rapid revised phase high-performance liquid chromatographic (RP-HPLC) method for the determination of six organic acids in Bayer liquors is reported. Oxalic, tartaric, acetic, succinic, glutaric and butene dicarboxylic acid were separated and quantified in 10 min. First time repeatability, reproducibility and recoveries were determined out for these acids in Bayer liquors.