The brain-pituitary-gonad axis of precociously matured females (PMFs) of Indian catfish (Heteropneustes fossilis), produced by testosterone treatment during juvenile stages, was analyzed by studies on immunoreactive gonadotropin-releasing hormone (ir-GnRH) secreting cells of the preoptic area of brain, plasma levels of gonadotropin (GtH-II), testosterone (T), and estradiol-17 beta (E(2)). GnRH cells of PMFs were large and strongly immunoreactive in comparison to control females. PMFs showed higher plasma levels of GtH-II, T, and E(2) than did control females. The ovaries of PMFs contained ripe ova, whereas control females had ova at maturing stages. This study suggests testosterone-mediated activation of the brain-pituitary-ovarian axis for precocious maturation in juvenile catfish.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1006/gcen.2001.7751 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The effect of post-exercise heat exposure (passive heat acclimation) on endurance exercise performance: a systematic review and meta-analysis.
BMC Sports Sci Med Rehabil
January 2025
Idaho College of Osteopathic Medicine, 1401 E. Central Dr, Meridian, ID, 83642, USA.
Background: "Active" heat acclimation (exercise-in-the-heat) can improve exercise performance but the efficacy of "passive" heat acclimation using post-exercise heat exposure is unclear. Therefore, we synthesised a systematic review and meta-analysis to answer whether post-exercise heat exposure improves exercise performance.
Methods: Five databases were searched to identify studies including: (i) healthy adults; (ii) an exercise training intervention with post-exercise heat exposure via sauna or hot water immersion (treatment group); (iii) a non-heat exposure control group completing the same training; and (iv) outcomes measuring exercise performance in the heat (primary outcome), or performance in thermoneutral conditions, V̇Omax, lactate threshold, economy, heart rate, RPE, core temperature, sweat rate, and thermal sensations.
Epidemiological Characteristics of HIV-Infected Individuals by the Registration for Special Exempted Calculation: A Nationwide Cohort Study.
Infect Chemother
December 2024
Institute for Health and Society, Hanyang University, Seoul, Korea.
Background: The Korean government is implementing policy to reduce medical costs and improve treatment related for human immunodeficiency virus (HIV) patients. The level of cost reduction and the benefits provided vary depending on how individuals with HIV utilize the system. This study aims to determine exact HIV prevalence by analyzing healthcare utilization patterns and examining differences in healthcare usage based on how individuals pay for their medical expenses.
View Article and Find Full Text PDFImpact of dietary supplementation of L-citrulline to meat goats during gestation on reproductive performance.
J Anim Sci Biotechnol
January 2025
Department of Animal Science, Texas A&M University, College Station, Texas, 77843, USA.
Background: Meat goat production is a worldwide industry with products such as meat, milk, soap, and fiber being produced. There are approximately 2.6 million meat goats in the United States.
View Article and Find Full Text PDFAn integrative taxonomic approach reveals two putatively novel species of phlebotomine sand fly (Diptera: Psychodidae) in Thailand.
Parasit Vectors
January 2025
Center of Excellence in Veterinary Parasitology, Department of Pathology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, 10330, Thailand.
Background: The subfamily Phlebotominae comprises 1028 species of sand fly, of which only 90 are recognized as vectors of pathogenic agents such as Trypanosoma, Leishmania, and Bartonella. In Thailand, leishmaniasis-a sand fly-borne disease-is currently endemic, with 36 documented sand fly species. However, many cryptic species likely remain unidentified.
View Article and Find Full Text PDFCessation of thumb/finger sucking habit in children using electronic habit reminder versus palatal crib: a randomized clinical pilot study.
BMC Oral Health
January 2025
Paediatric Dentistry and Dental Public Health Department, Faculty of Dentistry, Cairo University, EL-Saraya Street, Cairo, Egypt.
Background: There are different intraoral appliances for cessation of thumb/finger sucking habit, but they have many disadvantages and to overcome it, extra oral appliances with colourful and attractive shape were developed. Electronic habit reminder in the form of wristwatch with alarming sound was assessed in cessation of thumb/finger sucking habit in children versus palatal crib after 6 and 9 months.
Methods: This study is a randomized clinical pilot study, with allocation ratio 1:1 parallel group.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!