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Objective: To explore the value of systematic male reproductive system ultrasonography in the diagnosis of azoospermia etiology.
Methods: Retrospective analysis and classification statistics were conducted on the data of azoospermia cases who underwent systematic male reproductive system ultrasound examination at the First Affiliated Hospital of Ningbo University from January 2013 to January 2023.
Results: A total of 375 cases were included in the group, of which 303 cases could be diagnosed by ultrasound, including 161 cases of obstructive causes, 110 cases of non obstructive causes, and 32 cases of mixed causes. Obstructive causes mainly include bilateral absence or underdevelopment of the seminal vesicles and vas deferens, non obstructive causes mainly include bilateral simple testicular dysplasia, and the most common combined causes are bilateral absence or underdevelopment of the seminal vesicles and vas deferens combined with bilateral testicular dysplasia. The main causes involved a single organ in 174 cases, with 82 cases, 43 cases, and 4 cases involving 2-4 organs, respectively. In addition, there are multiple accompanying ultrasound manifestations of non primary causes.
Conclusion: Systematic ultrasound examination can comprehensively evaluate the male reproductive system, effectively diagnose the causes of most azoospermia, and provide valuable imaging evidence for clinical treatment.
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Environ Toxicol Chem
September 2025
Univ. Savoie Mont Blanc, CNRS. EDYTEM.
The environmental impact of Tire and Road Wear Particles (TRWP), arising from tire-road friction, has raised significant concerns. Like microplastics, TRWP contaminate air, water, and soil, with considerable annual emissions and runoff into freshwater ecosystems. Among TRWP compounds, 6PPD-Q, leached from tire particles, shows varying toxicity across species, notably affecting fish and invertebrates.
View Article and Find Full Text PDFSoc Work Public Health
September 2025
Strategic Partnerships - Louisiana, Planned Parenthood Gulf Coast, Houston, Texas, USA.
Engaging men as advocates and change agents is a critical mechanism to challenge and reform the social and political factors that impact women's sexual and reproductive health. While there is a growing body of evidence that well-designed interventions can increase males' gender-equitable attitudes and behaviors regarding sexual and reproductive health, most studies focus on men as partners. This paper describes the development and implementation of Men in the Movement, an intervention that provides a safe space for young men of color in Baton Rouge and New Orleans, Louisiana, to consider a gender-equitable future of manhood, discuss issues that are important to them, and to empower them to become advocates and leaders in their communities.
View Article and Find Full Text PDFInt J Vitam Nutr Res
July 2025
Department of Urology and Andrology, The First Affiliated Hospital, Sun Yat-sen University, 510080 Guangzhou, Guangdong, China.
Background: Obesity, a prevalent global health issue, is associated with testosterone deficiency (TD). A body shape index (ABSI) provides a more precise assessment of obesity and visceral fat, but its relationship with testosterone remains unclear. This study aimed to explore the association between ABSI and testosterone levels leading to TD.
View Article and Find Full Text PDFMol Biol Evol
September 2025
Department of Evolution and Ecology, University of California, Davis, CA, USA.
Drosophila seminal fluid proteins (SFPs) are often cited as an example of interlocus sexual conflict, wherein the proteins increase male fitness while decreasing female fitness, spurring recurring female counter adaptations and rapid molecular evolution. This model predicts that male-expressed genetic variation in the accessory gland, which produces seminal fluid, should generate counter-evolving genetic pathways in females, resulting in sexual coevolution. Using a trio of D.
View Article and Find Full Text PDFFront Toxicol
August 2025
Covestro Deutschland AG, Leverkusen, Germany.
The CLARITY-BPA Core Study is the most comprehensive animal study of oral bisphenol A (BPA) exposure to date. Rats were exposed daily, until postnatal day 21 or for the animals' lifetime. While the study authors concluded that several observations at the highest dose may be BPA treatment-related, a No-Observed-Adverse-Effect Level (NOAEL) has not been proposed in the published reports.
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