Naringin is a flavonoid glycoside found in citrus fruits and grapes with wide range of therapeutic actions. We aimed to study the inotropic effect naringin on rat-isolated atria, dissecting intracellular mechanisms involved this response. Concentration-response curves (0.003-6 mM) were obtained before after pre-incubation selective antagonists. Our results showed that presented biphasic respons...

Estrogen-related receptors (ERRs) are founding members of the orphan nuclear receptor (ONR) subgroup of the nuclear receptor superfamily. Twenty-seven years of study have yet to identify cognate ligands for the ERRs, though they have firmly placed ERRα and ERRγ at the intersection of cellular metabolism and oncogenesis. The pace of discovery for novel functions of ERRβ, however, has until recen...

Background Bronchial smooth muscle (BSM) remodelling in asthma is related to an increased mitochondrial biogenesis and enhanced BSM cell proliferation asthma. Since mitochondria produce the highest levels of cellular energy fatty acid β-oxidation most powerful way ATP, we hypothesised that, asthmatic cells, energetic metabolism shifted towards acids. Objectives We aimed characterise both vitro ...

The role of crosstalk between the Smad and the MAPK signaling pathways in activin-, transforming growth factor-β (TGF-β)-, hydroxyurea (HU) - and butyrate-dependent erythroid differentiation of K562 leukemic cells was studied. Treatment with all four inducers caused transient phosphorylation of Smad2/3 and MAPK proteins including ERK, p38 and JNK. Use of specific inhibitors of p38, ERK and JNK ...

First identified as mediators of G-protein-coupled receptor desensitization and internalization and later as signaling platforms, β-arrestins play a requisite role in chemotaxis and reorganization of the actin cytoskeleton, downstream of multiple receptors. However, the precise molecular mechanisms underlying their involvement have remained elusive. Initial interest in β-arrestins as facilitato...

This receptor family comprises a group of receptors for the calcitonin/CGRP peptides. The calcitonin (CT), amylin (AMY), gene-related peptide (CGRP) and adrenomedullin (AM) (nomenclature as agreed by NC-IUPHAR Subcommittee on CGRP, AM, AMY, CT [131, 74, 71]) are generated genes CALCR (which codes receptor, CTR) CALCRL receptor-like CLR, previously known CRLR). Their function pharmacology altere...

Pancreatic β-cell neogenesis in vivo holds great promise for cell replacement therapy diabetic patients, and discovering the relevant clinical therapeutic strategies would push it forward to application. Liraglutide, a widely used antidiabetic glucagon-like peptide-1 (GLP-1) analog, has displayed diverse β-cell-protective effects type 2 animals. Glucagon receptor (GCGR) monoclonal antibody (mAb...

Chronic activation of Wnt/β-catenin signaling is found in a variety of human malignancies including melanoma, colorectal and hepatocellular carcinomas. Interestingly, expression of the HCMV-encoded chemokine receptor US28 in intestinal epithelial cells promotes intestinal neoplasia in transgenic mice, which is associated with increased nuclear accumulation of β-catenin. In this study we show th...

The role of receptor phosphorylation on the redistribution of β-adrenergic receptors (β-ARs) in rat hearts during different phases of sepsis was investigated. Sepsis was induced by cecal ligation and puncture (CLP). Changes in the distribution of β-ARs in the sarcolemmal and light vesicle fractions were studied using (-)-[4,6-propyl-3H]dihydroalprenolol ([3H]DHA). Phosphorylation of β-ARs was s...