Objective: The purpose of this study was to investigate the role of nitric oxide (NO) during the development of fever and other symptoms of sickness behavior (i.e. anorexia, cachexia) in response to localized tissue inflammation caused by injection of turpentine in freely moving biotelemetered rats.
Methods: To determine the role of NO in turpentine-induced fever, we injected the NO synthase (NOS) inhibitor N(omega)-nitro-L-arginine methyl ester (L-NAME) intraperitoneally simultaneously or 5 h after turpentine injection.
Results: Rats responded with fever to intramuscular injection of 20 microl of turpentine that commenced 6 h after injection and reached peak values 11 h after injection. Although turpentine did not significantly alter food and water intake, it caused a drop in body weight. Rats injected with turpentine and treated with L-NAME responded with a substantial rise in fever, independently of the time of L-NAME injection. The rise in body temperature (T(b)) due to turpentine injection began slightly sooner and reached the maximal T(b) value faster in rats treated with L-NAME than in the ones treated with saline (control for L-NAME). The enhanced decrease in food and water intake in rats treated with a combination of L-NAME and turpentine was also observed. As a result, L-NAME-injected rats responded with a profound drop in body mass due to turpentine, independently of the time of L-NAME injection. L-NAME alone did not affect food and water intake, but slightly suppressed the gain of body mass.
Conclusion: These results indirectly indicate that NO is involved in pyrogenic and behavioral responses in rats during turpentine abscess.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1159/000054279 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Fully Atomistic Molecular Dynamics Simulation of Ice Nucleation Near an Antifreeze Protein.
J Am Chem Soc
January 2025
Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong, Kowloon 999077, China.
Heterogeneous ice nucleation is a widespread phenomenon in nature. Despite extensive research on ice nucleation near biological antifreeze proteins, a probe for ice nucleation and growth processes at the atomic level is still lacking. Herein, we present simulation evidence of the heterogeneous ice nucleation process on the ice-binding surface (IBS) of the antifreeze protein (TmAFP).
View Article and Find Full Text PDFNutritional and Functional Characterization of Chia Expeller and Gluten-Free Flours as Ingredients for Premixes.
Plant Foods Hum Nutr
January 2025
UNCPBA, Facultad de Ingeniería, Departamento de Ingeniería Química y Tecnología de los Alimentos, TECSE, Olavarría, Buenos Aires, Argentina.
The growing consumer demand for healthier foods that help reduce the risk of chronic diseases has driven the food industry to innovate with nutritionally and technologically viable products. This trend and the nutritional gaps in gluten-free diets have spurred the exploration of unconventional, high-quality ingredients like flour from pseudocereals, legumes, and oilseeds. This study evaluated the nutritional and functional profiles of chia expeller and flours from buckwheat, green/yellow peas, and rice to study their potential as techno-functional ingredients for new gluten-free premixes.
View Article and Find Full Text PDFAfter the storm, the calm never came: Hurricane Maria-related stressors and PTSD symptoms among Puerto Rican youth.
Psychol Trauma
January 2025
Medical University of South Carolina, Department of Psychiatry and Behavioral Sciences.
Objective: Youth may develop posttraumatic stress disorder (PTSD) following a hurricane. Triaging of mental health services is crucial to effectively deliver trauma-focused interventions following natural disasters. Given the increased likelihood of hurricanes due to the current climate crisis, this study sought to examine the dose-response effect between hurricane-related stressors and PTSD, identify a cumulative stressor cutoff score based on the number of hurricane-related stressors experienced, and identify important individual hurricane-related stressors in explaining PTSD symptoms among youth.
View Article and Find Full Text PDFEnhancing Waterproof Food Packaging with Janus Structure: Lotus Leaf Biomimicry and Polyphenol Particle Technology for Vegetable Preservation.
ACS Appl Mater Interfaces
January 2025
College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
With the increasing demand for improved food preservation, conventional waterproof food packaging has proven inadequate because of its limited functionality. Although incorporating features such as antibacterial and antioxidant properties into packaging enhances protection, it can compromise the hydrophobicity of the involved material, thereby increasing the risk of contamination from external sources. To address this challenge, a robust and reliable barrier capable of simultaneously integrating multiple protective functions is required.
View Article and Find Full Text PDFFluorescence Analysis of Quinine in Commercial Tonic Waters.
Methods Protoc
January 2025
Department of Chemistry, Virginia Commonwealth University, 1001 West Main Street, Richmond, VA 23284, USA.
Quinine is known for treating malaria, muscle cramps, and, more recently, has been used as an additive in tonic water due to its bitter taste. However, it was shown that excessive consumption of quinine can have severe side effects on health. In this work, we utilized fluorescence spectroscopy to measure the concentration of quinine in commercial tonic water samples.
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!