Methylene blue and the NO/cGMP pathway in solid organs transplants.

Minerva Anestesiol

Division of Cardiothoracic Surgery, Department of Surgery and Anatomy, Ribeirão Preto School of Medicine, University of São Paulo, São Paulo, Brazil -

Published: April 2020

The nitric oxide/cyclic guanosine monophosphate (NO/cGMP) pathway has a significative influence in hemodynamic changes that occur in transplants. Classically, the ischemia-reperfusion syndrome (IRS) is characterized by hypotension and low vascular resistance, when cGMP and nitric oxide (NO) are increased, contributing to oxidative stress, within an inflammatory context. These mechanisms occur in several types of transplants, such as liver, heart, lungs, kidney, which are a therapeutic choice in several clinical conditions when conventional treatments failed. It is well known the significant relation between graft dysfunction or rejection and ischemia-reperfusion injury that is linked to inflammatory response and NO/cGMP pathway activation. This review aims to study the NO/cGMP pathway in solid organ transplants. Finally, we inquire whether physicians do not underestimate the NO/cGMP pathway.

Download full-text PDF

Source
http://dx.doi.org/10.23736/S0375-9393.20.13841-0DOI Listing

Publication Analysis

Top Keywords

no/cgmp pathway
20
pathway solid
8
no/cgmp
5
pathway
5
methylene blue
4
blue no/cgmp
4
solid organs
4
transplants
4
organs transplants
4
transplants nitric
4

Similar Publications

Phosphodiesterase 2 A (PDE2A) function is stimulated by cGMP to catabolize cAMP. However, neurological and neurochemical effects of PDE2A deficiency are poorly understood. To address this gap, we studied behavioral characteristics and cerebral morpho-chemical changes of adult male heterozygous C57BL/6-PDE2A+/- (HET), and wild type C57BL/6-PDE2A+/+ (WT) mice.

View Article and Find Full Text PDF

Background: Cardiac fibrosis, a key contributor to heart failure, is driven by the activation of cardiac fibroblasts (CFs), often induced by angiotensin II (Ang II). Relaxin, a peptide hormone, has been reported to counteract fibrotic processes. This study aims to investigate the antifibrotic effects of relaxin on Ang II-induced CF activation, with a focus on the involvement of the nitric oxide/cyclic guanosine monophosphate (NO/cGMP) signaling pathway.

View Article and Find Full Text PDF

Soluble guanylyl cyclase stimulators and activators: Promising drugs for the treatment of hypertension?

Eur J Pharmacol

January 2025

Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic; First Department of Internal Medicine, Cardiology, Olomouc University Hospital and Palacký University, Olomouc, Czech Republic.

Nitric oxide (NO)-stimulated cyclic guanosine monophosphate (cGMP) is a key regulator of cardiovascular health, as NO-cGMP signalling is impaired in diseases like pulmonary hypertension, heart failure and chronic kidney disease. The development of NO-independent sGC stimulators and activators provide a novel therapeutic option to restore altered NO signalling. sGC stimulators have been already approved for the treatment of pulmonary arterial hypertension (PAH), chronic thromboembolic pulmonary hypertension (CTEPH), and chronic heart failure (HFrEF), while sGC activators are currently in phase-2 clinical trials for CKD.

View Article and Find Full Text PDF

Ethnopharmacological Relevance: Fritillaria imperialis L. (Fabaceae), commonly known as "Laleh vazhgon", ethnomedicinally utilized in Iranian traditional medicine to treat joint pain, chronic daily headaches, and back pain.

Aim Of The Study: To investigate the antinociceptive, anti-neuropathic, and anti-migraine activities of Fritillaria imperialis bulbs essential oil (FIEO) as well as to uncover the potential mechanisms of action involved.

View Article and Find Full Text PDF

Adenosine relaxes vagina smooth muscle through the cyclic guanosine monophosphate- and cyclic guanosine monophosphate-dependent pathways.

J Sex Med

January 2025

Andrology and Gender Endocrinology Unit, Department of Experimental Clinical and Biomedical Sciences "Mario Serio", University of Florence, Florence, 50134, Italy.

Background: In males, adenosine (ADO) is known to relax penile smooth muscles, although its role in the vagina is not yet fully elucidated.

Aim: This study investigated the effect of ADO on vagina smooth muscle activity, using a validated female Sprague-Dawley rat model.

Methods: Contractility studies, using noradrenaline-precontracted vaginal strips, tested the effects of ADORA1/3 antagonists and ADORA2A/2B antagonists and agonists.

View Article and Find Full Text PDF

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!