Measurements were made of spontaneous contractions and release of prostaglandin E-and F-like material into the bathing medium by uterine horns isolated from rats in different stages of the sex cycle. After 70 min of contractile activity the preparations from estrous rats released more PGF than those from proestrous or metestrous rats. On the other hand, similar amounts of PGF-like material is generated by estrous and diestrous horns. Less PGE-like material was found in the bathing solution during estrus than in metestrus or diestrus; the values obtained during proestrus were similar to those in estrus. PGI2 like material produced by chopped uterine tissue was greater during diestrus than in estrus. The initial isometric developed tension (IDI) and tension constancy varied depending of the stage of the sex cycle. Uteri from metestrous rats exhibited greater IDT and less % change with time than preparations from estrous or proestrous rats. The initial IDT, the tension change with time and contractile frequency correlate with the PGE-like material in the bathing solution during the 4 days of the sex cycle. There was no correlation with PGF-like material.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/0090-6980(81)90073-3 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Improved Voltammetric Procedure for Chloride Determination in Highly Acidic Media.
Materials (Basel)
December 2024
Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland.
Cyclic voltammetry (CV) can be applied as a reliable method for the determination of chloride ions in a range from several to a couple hundred (about 200) ppm. Since the standard potential of chloride ion/gaseous chlorine is 1.36 V vs.
View Article and Find Full Text PDFCan microplastic pollution be affected by beach nourishment? Assessment in intertidal sediment and bivalves.
Sci Total Environ
January 2025
Laboratory of Coastal Biology and Microplastic Analysis, Department of Chemistry, Federal University of Espírito Santo, Brazil.
Several methods can be used to mitigate coastal erosion, and one of the leading solutions is known as beach nourishment (BN), which involves using dredged material for nourishment, adding sand to extend an eroding beach. Although it has many advantages, the environmental impacts of BN remain poorly understood, especially on plastic pollution, which had not been investigated until this study. We aimed to compare the abundance and distribution of microplastics (MPs) found in intertidal sediments and specimens of the bivalve mollusks Crassostrea brasiliana, Mytella strigata, Perna perna, and Tivela mactroides, collected in two beaches of Vitoria, Southeast of Brazil (da Costa et al.
View Article and Find Full Text PDFAssessing caregiver burden: the role of assistive devices and identification of assistive device needs.
Disabil Rehabil Assist Technol
January 2025
Hanyang University Research Institute of Nursing Science, Seoul, Korea.
Purpose: There is insufficient information on whether the use of assistive devices is associated with a lower burden on caregivers of individuals with disabilities. This study was conducted (1) to examine how care recipient-level factors, caregiver-level factors, and the use of assistive devices were associated with caregiver burden, and (2) to investigate the assistive device needs of caregivers.
Materials And Methods: This cross-sectional descriptive study used surveys.
Comparative study of a commercial formula containing natural antimicrobials versus oral cephalexin or topical chlorhexidine-miconazole therapies for treating superficial pyoderma in dogs.
Vet Dermatol
January 2025
Department of Veterinary Medicine, School of Medicine and Life Sciences, Pontifícia Universidade Católica Do Paraná, Curitiba, Brazil.
Background: Chronic and recurrent pyoderma in dogs is driving a growing interest in natural antimicrobial products that offer minimal adverse effects and avoid antibiotic resistance.
Objectives: Evaluate the safety and efficacy of dermatological products with antimicrobial peptides and plant extracts, comparing them to chlorhexidine + miconazole and cephalexin therapy for superficial pyoderma in dogs.
Materials And Methods: Forty-five dogs with superficial pyoderma underwent clinical, cytopathological and microbiological diagnosis, and were randomly assigned to Group 1 (G1) treated with shampoo (two weekly baths) and lotion (twice daily on the affected areas) containing natural antimicrobials; Group 2 (G2) treated with two weekly baths using a therapeutic shampoo containing 2% chlorhexidine and 2.
The Use of Microwave Treatment as a Sustainable Technology for the Drying of Metallurgical Sludge.
Materials (Basel)
December 2024
Faculty of Metals Engineering and Industrial Computer Science, AGH University of Krakow, Mickiewicza 30, 30-059 Krakow, Poland.
The modern metallurgical industry produces approximately 90% of the volume of all produced steel; for this, integrated technology based on fossil materials such as coal, fluxes, and especially iron ore is used. This industry generates large amounts of waste and by-products at almost all stages of production. Alternative iron and steel production technologies based on iron ore, methane, or pure hydrogen are also not waste-free.
View Article and Find Full Text PDFWant 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!