OBJECTIVE The G-protein-coupled receptor APJ and its ligand apelin are highly expressed in the pulmonary vasculature, but their function in this vascular bed is unclear. We hypothesized that disruption of apelin signaling would lead to worsening of the vascular remodeling associated with pulmonary hypertension (PH). METHODS AND RESULTS We found that apelin-null mice developed more severe PH c...

Background: Apelin is an endogenous peptide with positive inotropic property secreted by the heart besides other tissues. Plasma apelin levels are altered in chronic heart failure with left ventricular dysfunction. However, the effect of left atrial hemodynamic overload on plasma apelin levels in mitral stenosis (MS) is unknown. In this observational study, we estimated plasma apelin level in M...

Downregulation of Apelin in the Human Placental Chorionic Villi from Preeclamptic 1 Pregnancies 2 3 Liliya M. Yamaleyeva, Mark C. Chappell, K. Bridget Brosnihan, Lauren Anton, David L. 4 Caudell, Sara Shi, Carolynne McGee, Nancy Pirro, Patricia E. Gallagher, Robert N. Taylor, 5 David C. Merrill, Heather L. Mertz 6 7 Hypertension and Vascular Research Center, Department of Obstetrics and Gynecol...

BACKGROUND/AIMS Levels of serum apelin (s-apelin), an endogenous ligand for angiotensin-like receptor 1, have been shown to be related to hepatic fibrosis and hemodynamic abnormalities in preclinical studies. We investigated the clinical implications of s-apelin as a noninvasive prognostic biomarker for chronic liver disease (CLD). METHODS From January 2009 to December 2012, 215 CLD patients ...

OBJECTIVE We examined the change in apelin concentration and its relationship with left ventricular diastolic function in patients treated for hypertension. METHODS Ninety treatment-naive patients with newly diagnosed hypertension and 33 age- and sex-matched control subjects were prospectively enrolled. Patients with hypertension were randomized to treatment either with telmisartan 80 mg or a...

AIM The rs2235306 of apelin polymorphism has been shown to be associated with fasting plasma glucose levels and hypertension. The present study aimed to investigate the impact of the apelin rs2235306 gene polymorphism on the risk of metabolic syndrome (MeS) in a sample of the Iranian population. MATERIALS AND METHODS This population-based cross-sectional study was performed on 151 subjects wi...

Adipokines play key roles in the regulation of bone growth, obesity, diabetes mellitus type 2, and HIV infection. As a newly discovered hormone in the adipokine family, the precise role of apelin on articular cartilage metabolism is not yet clear. The aim of this study was to evaluate the role of apelin on articular cartilage. In vitro, we examined the effects of apelin on normal chondrocyte pr...

A wide range of adipokines identified over the past years has allowed considering the white adipose tissue as a secretory organ closely integrated into overall physiological and metabolic control. Apelin, a ubiquitously expressed peptide was known to exert different physiological effects mainly on the cardiovascular system and the regulation of fluid homeostasis prior to its characterization as...

I t has been unclear whether there is a pathway that regulates plasma glucose through the action of peripheral tissue of apelin with the secretory function of insulin, which exerts a control in adipo-cytes in addition to the direct regulation of plasma glucose. Our study was designed to identify the changes in plasma apelin levels in newly diagnosed type 2 diabetes in Chinese people. We also tr...