Testicular volume was assessed in 1029 infertile men and found to be normal in 704; 71 patients had unilateral and 213 had bilateral testicular hypotrophy; 4 had unilateral and 37 had bilateral atrophy. Sperm count and motility decreased in accordance with testicular volume. The lowest mean sperm counts and lowest mean motility percentages were found in patients with bilateral testicular atrophy. An increase in mean FSH and LH was also significantly linked to decreasing testicular volume; the increase in the former was not related to a drop in sperm count. A significant correlation was found between testicular volume and spermatogenesis and testicular volume is considered to be a reliable indicator of testicular function.
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http://dx.doi.org/10.1111/j.1464-410x.1989.tb05325.x | DOI Listing |
Arch Dis Child
January 2025
Pediatrics, Erasmus MC, Rotterdam, Netherlands
Objective: Impaired fetal and infant growth may cause alterations in developmental programming of the hypothalamic-pituitary-gonadal axis and subsequently pubertal development. We aimed to assess associations between fetal and infant growth and pubertal development.
Design: Population-based prospective birth cohort.
Anim Reprod Sci
January 2025
Department of Gamete and Embryo Biology, Institute of Animal Reproduction and Food Research, Polish Academy of Science, Olsztyn, Poland.
The quality and quantity of stripped and testicular wild northern pike (Esox lucius) sperm was compared and the effectiveness of short-term storage was assessed. Stripped sperm (SS) was collected using abdominal massage. Next, the fish were decapitated and the testes were removed.
View Article and Find Full Text PDFBackground: Differential diagnosis of hypogonadotropic hypogonadism (HH) and constitutional delay of puberty (CDP) is extremely important since with the latter puberty begins and completes without any medical intervention and in the case of HH puberty does not occur or is incomplete. Failure to start treatment on time leads to medical and psychosocial maladjustment of the patient.
Aim: Development of a method for differential diagnosis of hypogonadotropic hypogonadism and constitutional delay of puberty in boys 13.
Theriogenology
January 2025
Instituto de Investigaciones en Reproducción Animal, FCV, UNLP, Calle 60 y 118, La Plata, B1900AVW, Buenos Aires, Argentina; Universidad del Chaco Austral, Argentina. Electronic address:
This study aimed to evaluate the use of the Improvac® vaccine to avoid heat and pregnancies in queens and fertility in males during the breeding season. Twenty-eight intact animals were divided into treated males (G1, n = 7), treated females (G2, n = 18), and untreated males (G3, n = 3) that were untamed and could not be captured for immunization. In cats from the G1 group, the testicular volume (337.
View Article and Find Full Text PDFBasic Clin Androl
January 2025
Department of Ultrasound, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China.
Background: Hemodynamic alterations in the spermatic vein are implicated in infertility among patients with varicocele (VC). Contrast-enhanced ultrasound (CEUS), a powerful tool for hemodynamic analysis, remains unexplored for VC. This study aimed to demonstrate the feasibility of using CEUS to evaluate spermatic vein hemodynamics in patients with VC and establish a clear correlation between specific hemodynamic patterns and impaired semen parameters.
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