Premium
Correlation of nitric oxide and atrial natriuretic peptide changes with altered cGMP homeostasis in liver cirrhosis
Author(s) -
Montoliu Carmina,
Kosenko Elena,
Del Olmo Juan A.,
Serra Miguel A.,
Rodrigo José M.,
Felipo Vicente
Publication year - 2005
Publication title -
liver international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.873
H-Index - 110
eISSN - 1478-3231
pISSN - 1478-3223
DOI - 10.1111/j.1478-3231.2005.01066.x
Subject(s) - nitric oxide , medicine , endocrinology , chemistry , atrial natriuretic peptide , cirrhosis , guanylate cyclase 2c , gucy1a3 , soluble guanylyl cyclase , gucy1b3 , activator (genetics) , guanylate cyclase , homeostasis , natriuretic peptide , portal hypertension , receptor , heart failure
Abstract: Background: Cyclic GMP (cGMP) concentration is increased in plasma of patients with liver cirrhosis. Three possible mechanisms may contribute: increased cGMP synthesis by soluble (activated by nitric oxide), or particulate (activated by atrial natriuretic peptide (ANP)) guanylate cyclase or increased release from cells. Aim: The aim of this work was to analyze the possible contributors to increased plasma cGMP and to assess whether changes in the parameters of the system vary with the degree of liver disease (Child Pugh score) or by the presence of ascites. Methods: We measured cGMP in plasma and lymphocytes, soluble guanylate cyclase activation by nitric oxide in lymphocytes, nitrates and nitrites and ANPs (activator of particulate guanylate cyclase) in plasma. We analyzed the correlation between changes in different parameters to discern which parameters contribute to increased plasma cGMP. Results: The plasma content of nitrates+nitrites, ANP and cGMP are increased. Activation of soluble guanylate cyclase by nitric oxide is increased in patients while basal cGMP in lymphocytes is decreased. Conclusions: Both increased ANP and increased activation of soluble guanylate cyclase by nitric oxide contribute to increased plasma cGMP in patients. The concentrations of ANP and cGMP in plasma increase with the degree of disease and are higher in patients with ascites.