a-method-to-study-c924t-polymorphism-thromboxane-a2-receptor

A Method to Study the C924T Polymorphism of the Thromboxane A2 Receptor Gene

The thromboxane A2 receptor (TBXA2R) gene is a member of the G-protein coupled superfamily with seven-transmembrane regions. It is involved in ...

university of chieti

Oral anticoagulant therapy, such as vitamin K antagonists (VKAs), is prominent for the prevention of cerebral ischemic stroke or systemic embolism and all-cause mortality in patients with atrial fibrillation, venous thromboembolism, and mechanical or biological valve. VKA treatment requires monitoring of the international normalized ratio (INR) in order to maintain it in a therapeutic range, avoiding side effects, the main and most significant of which is bleeding. The aim of the present study was to evaluate the event rates of several clinical composite outcomes, such as bleeding, thromboembolic events, and all-cause death.

Analytical Management of Patients Undergoing Oral Anticoagulant Therapy Could Have a Strong Impact on Clinical Outcomes: A Follow-up Study.

In order to better characterize the molecular mechanisms involved in processing mutated transcripts, we investigated the post-transcriptional role of the C924T polymorphism (rs4523) located in the 3' region of the TBXA2R gene.

Differential TBXA2 receptor transcript stability is dependent on the C924T polymorphism.

Autophagy is a not well-understood conserved mechanism activated during nutritional deprivation in order to maintain cellular homeostasis. In the present study, we investigated the correlations between autophagy, apoptosis and the MAPK pathways in melanoma cell lines. We demonstrated that during starvation the EGF receptor mediated signaling activates many proteins involved in the MAPK pathway. Our data also suggest a previously unidentified link between the EGFR and Beclin-1 in melanoma cell line. We demonstrated that, following starvation, EGFR binds and tyrosine-phosphorylates Beclin-1, suggesting that it may play a key inhibitory role in the early stage of starvation, possibly through the Beclin-1 sequestration. Furthermore, EGFR releases Beclin-1 and allows initiating steps of the autophagic process. Interestingly enough, when the EGFR pathway was blocked by anti-EGF antibodies, immunoprecipitated Beclin-1 did not bind the phospho-EGFR. In addition, an extended binding of p-Bcl2 either with Beclin-1 or with Bax was observed with a decreased activation of the stress-induced JNK kinase, thus avoiding the transduction pathways that activate autophagy and apoptosis, respectively. For this reason, we advance the hypothesis that the activation of the EGFR is a necessary event that allows the ignition and progression of the autophagic process, at least in melanoma cells.

Sebastiano Ursi

SS Annunziata University Hospital,
Unit of Clinical Molecular Biology and Predictive Medicine,
SS Annunziata University Hospital, Unit of Clinical Molecular Biology and Predictive Medicine

university of chieti

A Method to Study the C924T Polymorphism of the Thromboxane A2 Receptor Gene

Sebastiano Ursi

.css-o250i3{font-size:18px;font-family:Open Sans,sans-serif;line-height:21.6px;}SS Annunziata University Hospital,Unit of Clinical Molecular Biology and Predictive Medicine,SS Annunziata University Hospital, Unit of Clinical Molecular Biology and Predictive Medicine

university of chieti

A Method to Study the C924T Polymorphism of the Thromboxane A2 Receptor Gene

SS Annunziata University Hospital,
Unit of Clinical Molecular Biology and Predictive Medicine,
SS Annunziata University Hospital, Unit of Clinical Molecular Biology and Predictive Medicine