The Effects of Single-dose Administration of a Novel Selective alpha2c Antagonist on Emotional and Cognitive Processing in Healthy Volunteers: an fMRI Investigation

The aim of the present study is to investigate changes in neural activity (BOLD signal), as measured using fMRI, in brain areas associated with emotional and working memory during task performance after single-dose administration of a novel selective alpha2c adrenoceptor antagonist (ORM-12741) in healthy volunteers. Further, it will be explored whether ORM-12741 affects connectivity between brain areas in rest, as measured using fMRI, and cognitive performance in the sample under investigation.

Start Date26 Mar 2018

Sponsor / Collaborator

University of Cape Town

[+2]

NCT03128320 / CompletedPhase 2

A Randomized, Single-blind, Threefold Crossover, Single-center Study to Assess the Safety and the Effects of 1 mg and 5 mg BAY1193397 in Comparison to Placebo on Skin Capillary Blood Flow and Transcutaneous Oxygen Pressure After Single Dose in Type II Diabetic Patients

The purpose of the study is to analyse skin blood flow in diabetic patients. The patients receive a single dose of placebo, 1 mg BAY1193397, and 5 mg BAY1193397. The analysis of safety and tolerability are secondary objectives of this study.

Start Date25 May 2017

Sponsor / Collaborator

Bayer AG

EUCTR2014-000217-30-HR / Not yet recruitingPhase 2

EFFICACY OF ORM-12741 ON AGITATION/AGGRESSION SYMPTOMS IN PATIENTS WITH ALZHEIMER’S DISEASE: A RANDOMISED, DOUBLE-BLIND, PLACEBO-CONTROLLED, PARALLEL GROUP, MULTICENTRE STUDY OF 12 WEEKS - NEBULA

Start Date24 Feb 2016

Sponsor / Collaborator

Orion Oyj

100 Clinical Results associated with α2C-AR

100 Translational Medicine associated with α2C-AR

0 Patents (Medical) associated with α2C-AR

412

Literatures (Medical) associated with α2C-AR

01 Oct 2024·Clinical Pharmacology & Therapeutics

Clinical Pharmacogenetics Implementation Consortium Guideline (CPIC) for CYP2D6, ADRB1, ADRB2, ADRA2C, GRK4, and GRK5 Genotypes and Beta‐Blocker Therapy

Review

Author: Stein, C. Michael ; Huddart, Rachel ; Lee, Craig R. ; van Schaik, Ron H. N. ; Klein, Teri E. ; Schwab, Matthias ; Nagy, Mohamed ; Agundez, Jose A. G. ; Thomas, Cameron D. ; Uppugunduri, Chakradhara Rao S. ; Caudle, Kelly E. ; Donnelly, Roseann S. ; Lanfear, David E. ; Baye, Jordan F. ; Duarte, Julio D. ; Monte, Andrew A. ; Luzum, Jasmine A. ; Gaedigk, Andrea

Beta‐blockers are widely used medications for a variety of indications, including heart failure, myocardial infarction, cardiac arrhythmias, and hypertension. Genetic variability in pharmacokinetic (e.g., CYP2D6) and pharmacodynamic (e.g., ADRB1, ADRB2, ADRA2C, GRK4, GRK5) genes have been studied in relation to beta‐blocker exposure and response. We searched and summarized the strength of the evidence linking beta‐blocker exposure and response with the six genes listed above. The level of evidence was high for associations between CYP2D6 genetic variation and both metoprolol exposure and heart rate response. Evidence indicates that CYP2D6 poor metabolizers experience clinically significant greater exposure and lower heart rate in response to metoprolol compared with those who are not poor metabolizers. Therefore, we provide therapeutic recommendations regarding genetically predicted CYP2D6 metabolizer status and metoprolol therapy. However, there was insufficient evidence to make therapeutic recommendations for CYP2D6 and other beta‐blockers or for any beta‐blocker and the other five genes evaluated (updates at www.cpicpgx.org).

22 Jan 2024·Journal of Biomolecular Structure and Dynamics

Tracing the pathways and mechanisms involved in the anti-breast cancer activity of glycyrrhizin using bioinformatics tools and computational methods

Article

Author: Hashemipour, Hassan ; Poustforoosh, Alireza ; Faramarz, Sanaz ; Tüzün, Burak ; Negahdaripour, Manica

A complete investigation to understand the pathways that could be affected by glycyrrhizin (licorice), as anti-breast cancer (BC) agent, has not been performed to date. This study aims to investigate the pathways involved in the anti-cancer activity of glycyrrhizin against BC. For this purpose, the target genes of glycyrrhizin were obtained from the ChEMBL database. The BC-associated genes for three types of BC (breast carcinoma, malignant neoplasm of breast, and triple-negative breast neoplasms) were retrieved from DisGeNET. The target genes of glycyrrhizin and the BC-associated genes were compared, and the genes with disease specificity index (DSI) > 0.6 were selected for further evaluation using in silico methods. The protein-protein interaction (PPI) network was constructed, and the Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways were analyzed. The potential complexes were further evaluated using molecular dynamics (MD) simulation. The results revealed that among 80 common genes, ten genes had DSI greater than 0.6, which included POLK, TACR2, MC3R, TBXAS1, HH1R, SLCO4A1, NPY2R, ADRA2C, ADRA1A, and SLCO2B1. The binding affinity of glycyrrhizin to the cognate proteins and binding characteristics were assessed using molecular docking and binding free energy calculations (MM/GBSA). POLK, TBXAS1, and ADRA1A showed the highest binding affinity with -8.9, -9.3, and -9.6 kcal/mol, respectively. The final targets had an association with BC at several stages of tumor growth. By affecting these targets, glycyrrhizin could influence and control BC efficiently. MD simulation suggested the pathways triggered by the complex glycyrrhizin-ADRA1A were more likely to happen.Communicated by Ramaswamy H. Sarma.

01 Jan 2024·Journal of Cancer

Pan-cancer analysis of the role of α2C-adrenergic receptor (ADRA2C) in human tumors and validation in glioblastoma multiforme models

Article

Author: Wang, Chenyang ; Liu, Liyan ; Nie, Shuangfa ; Gao, Xiang ; Chen, Chan ; Huang, Ning ; Chen, Junli ; Chen, Huitong ; Zhang, Xiaoxiao

Background: Several studies have reported the relationship between α2C-adrenergic receptor (ADRA2C) and both neoplastic and non-neoplastic diseases. However, a comprehensive pan-cancer analysis is currently lacking. Methods: Utilizing the RNA sequencing (RNA-seq) datasets from The Cancer Genome Atlas (TCGA) database, the roles of ADRA2C in human pan-cancer were analyzed through a variety of bioinformatics approaches, including R programming language and single-cell sequencing data analysis, et al. Besides, cell migration assay and immunochemistry were employed to further validate the role of ADRA2C in glioblastoma multiforme (GBM) cell lines and GBM mouse model. Results: A total of 33 cancer types were involved in this study. It was revealed that the expression level of ADRA2C varied across different clinical stages in patients with breast invasive carcinoma (BRCA), esophageal adenocarcinoma (ESCA), kidney renal papillary cell carcinoma (KIRP) and lung squamous cell carcinoma (LUSC). Meanwhile, it was found that ADRA2C may play roles in prognosis of adrenocortical carcinoma (ACC), glioblastoma multiforme and lower grade glioma (GBM-LGG), and uveal melanoma (UVM). Functional enrichment analysis suggested that ADRA2C expression level was highly correlated with neuronal system-related pathways. Moreover, ADRA2C may be a promising diagnostic marker for cervical squamous cell carcinoma and endocervical adenocarcinoma (CESC), cholangiocarcinoma (CHOL), GBM, GBMLGG, kidney chromophobe (KICH), and KIRP. Additionally, ADRA2C expression level was correlated with the levels of several infiltrating cells and immune checkpoint genes. Besides, the single-cell sequencing data analysis indicated that ADRA2C played a role in multiple tumor development processes in GBM, retinoblastoma (RB), and UVM. Finally, in vitro and in vivo experiments confirmed that the expression level of ADRA2C may be associated with glioma cell migration, apoptosis, and invasion. Conclusion: ADRA2C exhibited to play a notable role in several cancer types, suggesting that ADRA2C could serve as a promising biomarker or target for cancer diagnosis, prognosis, and treatment, particularly for GBM.

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