The present study explores the changes of nitric oxide synthesis and esophageal dysmotility in a feline model of esophagitis. Perfusion of the esophagus with acid produced inflammatory changes of esophageal mucosa. The esophageal motility was measured before and after the perfusion. The nitric oxide synthase activity, the l-arginine uptake, and the content of cyclic guanine monophosphate of the muscle and the mucous membrane were determined and the NADPH-diaphorase was stained. Esophagitis impairs the motility of the esophagus. The nitric oxide synthase activity, the content of cyclic guanine monophosphate, the NADPH-diaphorase stain and the maximum velocity of l-arginine uptake of lower esophageal sphincter of the cats in the acid perfusion group were higher than those of the control group. The maximum velocity of l-arginine transport and the content of cyclic guanine monophosphate of the mucosa in the acid perfusion group were lower than those of the control group. The results suggested that during esophagitis there is an alteration of the l-arginine/nitric oxide synthase/nitric oxide pathway in the esophagus, which may be one of the important mechanisms of esophageal motility dysfunction.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1046/j.1442-2050.2002.00249.x | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Neuroprotective role of sialic-acid-binding immunoglobulin-like lectin-11 in humanized transgenic mice.
Front Neurosci
December 2024
Institute of Reconstructive Neurobiology, Medical Faculty and University Hospital of Bonn, University of Bonn, Bonn, Germany.
Brain aging is a chronic process linked to inflammation, microglial activation, and oxidative damage, which can ultimately lead to neuronal loss. Sialic acid-binding immunoglobulin-like lectin-11 (SIGLEC-11) is a human lineage-specific microglial cell surface receptor that recognizes -2-8-linked oligo-/polysialylated glycomolecules with inhibitory effects on the microglial inflammatory pathways. Recently, the gene locus was prioritized as a top tier microglial gene with potential causality to Alzheimer's disease, although its role in inflammation and neurodegeneration remains poorly understood.
View Article and Find Full Text PDFUse of the Hyperbaric Chamber Versus Conventional Treatment for the Prevention of Amputation in Chronic Diabetic Foot and the Influence on Fitting and Rehabilitation: A Systematic Review.
Int J Vasc Med
December 2024
Department of Medical-Surgical Therapy, Medicine and Health Sciences Faculty, University of Extremadura, Badajoz, Spain.
Diabetes mellitus (DM) is one of the most common chronic endocrine diseases, characterized by hyperglycemia, due to abnormal nitric oxide synthesis. The trend of an increase in the number of patients with DM continues. The medical and economic burden of DM is not only associated with hyperglycemia management but also with the management of DM-related complications.
View Article and Find Full Text PDFAnalgesic Effect of Dehydrocorydaline on Chronic Constriction Injury-Induced Neuropathic Pain via Alleviating Neuroinflammation.
Chin J Integr Med
January 2025
Department of Anaesthesiology, Nanjing Drum Tower Hospital, Nanjing Drum Tower Hospital Clinical College, Nanjing University of Chinese Medicine, Nanjing, 210008, China.
Objective: To illustrate the role of dehydrocorydaline (DHC) in chronic constriction injury (CCI)-induced neuropathic pain and the underlying mechanism.
Methods: C57BL/6J mice were randomly divided into 3 groups by using a random number table, including sham group (sham operation), CCI group [intrathecal injection of 10% dimethyl sulfoxide (DMSO)], and CCI+DHC group (intrathecal injection of DHC), 8 mice in each group. A CCI mouse model was conducted to induce neuropathic pain through ligating the right common sciatic nerve.
Mechanistic insights and atmospheric implications of the degradation reaction of 3-methoxy-1-propanol by reaction with hydroxyl radicals and identification of the end products in the presence of O/NO.
Sci Rep
January 2025
Department of Physical Chemistry, Gdańsk University of Technology, Narutowicza 11/12, Gdańsk, 80-233, Poland.
The study investigated the degradation of 3-methoxy-1-propanol (3M1P) by OH using the M06-2X/6-311++G(d, p) level, with CCSD(T) single-point corrections. We focused on hydrogen atom abstraction from various alkyl groups within the molecule. The rate coefficient for 3M1P degradation was calculated from the sum of the rate coefficients corresponding to the removal of H-atoms from primary (-CH), secondary (-CH-), tertiary (-CH< ), and alcohol (-ΟH) groups.
View Article and Find Full Text PDFMicrobial changing patterns across lateral and vertical horizons in recently formed permafrost after the outburst of Zonag Lake, Tibetan Plateau.
FEMS Microbiol Ecol
January 2025
Center for Pan-third Pole Environment, Lanzhou University, Lanzhou, China.
In polar and alpine regions, global warming and landform changes are draining lakes, transforming them into permafrost with altered microbial communities and element cycling. In this study, we investigated bacterial and archaeal (prokaryotic) community changes in the newly exposed sediment of Zonag Lake (Tibetan Plateau), focusing on prokaryotic diversity, community structure, and genes involved in carbon fixation and nitrogen cycling across lateral (up to 800 m) and vertical (up to 80 cm) horizons. The results showed that prokaryotic richness decreased across the lateral horizons, coinciding with reductions in carbon concentrations.
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!