Results 61 to 70 of about 279,908 (354)

Selective acquired long QT syndrome (saLQTS) upon risperidone treatment

BMC Psychiatry, 2012
Background Numerous structurally unrelated drugs, including antipsychotics, can prolong QT interval and trigger the acquired long QT syndrome (aLQTS). All of them are thought to act at the level of KCNH2, a subunit of the potassium channel.
Lazarczyk Maciej, Bhuiyan Zahir A, Perrin Nicolas, Giannakopoulos Panteleimon   +3 more
doaj   +1 more source

Restricting excessive cardiac action potential and QT prolongation: a vital role for IKs in human ventricular muscle [PDF]

, 2005
Background - Although pharmacological block of the slow, delayed rectifier potassium current (I-Ks) by chromanol 293B, L-735,821, or HMR-1556 produces little effect on action potential duration (APD) in isolated rabbit and dog ventricular myocytes, the ...
Biliczki, Péter, Bitay, Miklós, Bogáts, Gábor, Jost, Norbert, Lathrop, David A., Lengyel, Csaba Attila, Nagy, Zsolt, Papp, Gyula, Takács, János, Varró, András, Virág, László   +10 more
core   +1 more source

Acquired Long QT Syndrome and Electrophysiology of Torsade de Pointes

Arrhythmia & Electrophysiology Review, 2019
Congenital long QT syndrome (LQTS) has been the most investigated cardiac ion channelopathy. Although congenital LQTS remains the domain of cardiologists, cardiac electrophysiologists and specialised centres, the much more frequently acquired LQTS is the
N. El-Sherif, G. Turitto, M. Boutjdir
semanticscholar   +1 more source

Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of Multiple Ascending Doses and Dose Titration of Bexicaserin in Healthy Participants in a Randomized, Double‐Blind, Placebo‐Controlled Study

Clinical Pharmacology in Drug Development, EarlyView.
Abstract Bexicaserin (LP352) is a selective superagonist of the 5‐hydroxytryptamine 2C (5‐HT2C) receptor currently in development for the treatment of seizures that arise from developmental and epileptic encephalopathies. This phase 1, double‐blind, placebo‐controlled multiple ascending dose (MAD) study assessed the safety, tolerability, and ...
Jonathan Williams, Rosa Chan, Chad Orevillo, Gale O'Connell, Dewey McLin, Shikha Polega, Nuggehally R. Srinivas, Randall Kaye   +7 more
wiley   +1 more source

Exploring the impact of a KCNH2 missense variant on Long QT syndrome: insights into a novel gender-selective, incomplete penetrance inheritance mode

Frontiers in Genetics
BackgroundLong QT syndrome (LQTS) is an inherited malignant arrhythmia syndrome that poses a risk of sudden death. Variants in the Potassium Voltage-Gated Channel Subfamily H Member 2 (KCNH2) gene are known to cause Long QT syndrome through an autosomal ...
Peng Chen, Peng Chen, Zainul Zampawala, Hong Wang, Luyun Wang   +4 more
doaj   +1 more source

Vomiting, electrolyte disturbance, and medications; the perfect storm for acquired long QT syndrome and cardiac arrest: a case report

Journal of Medical Case Reports, 2022
Background Acquired long QT syndrome is an important and preventable cause of cardiac arrest. Certain medications and electrolyte disturbance are common contributors, and often coexist. In this case, we report five contributors to cardiac arrest.
K. D. Tiver, D. Dharmaprani, J. X. Quah, A. Lahiri, K. E. Waddell-Smith, A. N. Ganesan   +5 more
doaj   +1 more source

Case Report: Expanding the Phenotypic Spectrum of Timothy Syndrome Type 1: A Sporadic Case With a de novo CACNA1C Pathogenic Variant and Segmental Ileal Dilatation

Frontiers in Pediatrics, 2021
Background: Long QT syndactyly syndrome (long QT syndrome type 8), also known as Timothy Syndrome (TS) was first described in 1994 with still <50 case reported in the literature.
Ahmed A. Nugud, Nermeen Mahmoud ELkholy, Awad Alkarim Omar, Abid Qazi, Christos Tzivinikos, Christos Tzivinikos, Nidheesh Chencheri, Sabina Khan, Muhammad Eyad Ba'Ath, Muhammad Eyad Ba'Ath   +9 more
doaj   +1 more source

Genetics update: monogenetics, polygene disorders and the quest for modifying genes [PDF]

, 2018
The genetic channelopathies are a broad collection of diseases. Many ion channel genes demonstrate wide phenotypic pleiotropy, but nonetheless concerted efforts have been made to characterise genotype-phenotype relationships.
Symonds, Joseph D., Zuberi, Sameer M.
core   +1 more source

A multipart phase 1 study of the safety, pharmacodynamics and pharmacokinetics of ALG‐055009, a novel thyroid hormone receptor beta (THR‐β) agonist for metabolic dysfunction‐associated steatohepatitis (MASH), in healthy participants

Clinical Pharmacology in Drug Development, EarlyView.
Abstract ALG–055009 is an oral thyroid hormone receptor beta (THR‐β) agonist being evaluated for treating metabolic dysfunction–associated steatohepatitis (MASH). This study evaluated the safety, tolerability, pharmacokinetics, and pharmacodynamics of ALG‐055009 and bioavailability/food effect.
Hakim Charfi, Benedetta Massetto, Megan Fitzgerald, Kha Le, Stanley Wang, Ifong Kan‐Eng, Meenakshi Venkatraman, Naqvi Mohammad, Lawrence Blatt, Tse‐I Lin, Sushmita M. Chanda, John Fry   +11 more
wiley   +1 more source

Congenital Long QT Syndrome: An Update and Present Perspective in Saudi Arabia [PDF]

, 2013
Primary cardiac arrhythmias are often caused by defects, predominantly in the genes responsible for generation of cardiac electrical potential, i.e., cardiac rhythm generation.
Al-Aama, J., Al-Shahrani, S., Bhuiyan, Z.A., Momenah, T.S., Wilde, A.A.M.   +4 more
core   +1 more source