Divergent regulation of ryanodine receptor 2 calcium release channels by arrhythmogenic human calmodulin missense mutants

HS Hwang, FR Nitu, Y Yang, K Walweel… - Circulation …, 2014 - Am Heart Assoc
K d values were obtained from Figure 1 and reference 8 and compared with control K d
values for WT-CaM. CaM indicates calmodulin; CPVT, catecholaminergic polymorphic …

The emerging role of calmodulin regulation of RyR2 in controlling heart rhythm, the progression of heart failure and the antiarrhythmic action of dantrolene

K Walweel, YW Oo, DR Laver - Clinical and Experimental …, 2017 - Wiley Online Library
The emerging role of calmodulin regulation of RyR2 in controlling heart rhythm, the progression
of heart failure and the antiarrhythmic action of dantrolene - Walweel - 2017 - Clinical …

Essential role of calmodulin in RyR inhibition by dantrolene

YW Oo, N Gomez-Hurtado, K Walweel… - Molecular …, 2015 - ASPET
Dantrolene is the first line therapy of malignant hyperthermia. Animal studies suggest that
dantrolene also protects against heart failure and arrhythmias caused by spontaneous Ca 2+ …

Ryanodine receptor modification and regulation by intracellular Ca2+ and Mg2+ in healthy and failing human hearts

K Walweel, P Molenaar, MS Imtiaz, A Denniss… - Journal of molecular and …, 2017 - Elsevier
… In all failing hearts there was an increase in RyR2 activity at end-diastolic cytoplasmic Ca 2
+ (100 nM), a decreased cytoplasmic [Ca 2 + ] required for half maximal activation (K a ) and …

Calmodulin inhibition of human RyR2 channels requires phosphorylation of RyR2-S2808 or RyR2-S2814

K Walweel, N Gomez-Hurtado, RT Rebbeck… - Journal of molecular and …, 2019 - Elsevier
… Using FRET between donor-FKBP12.6 and acceptor-CaM bound to RyR2, we
determined that CaM binds to RyR2 from healthy human heart with a K d = 121 ± 14 nM. Ex-vivo …

Dantrolene inhibition of ryanodine channels (RyR2) in artificial lipid bilayers depends on FKBP12. 6

K Walweel, N Beard, DF van Helden… - Journal of General …, 2023 - rupress.org
Dantrolene is a neutral hydantoin that is clinically used as a skeletal muscle relaxant to
prevent overactivation of the skeletal muscle calcium release channel (RyR1) in response to …

Differences in the regulation of RyR2 from human, sheep, and rat by Ca2+ and Mg2+ in the cytoplasm and in the lumen of the sarcoplasmic reticulum

K Walweel, J Li, P Molenaar, MS Imtiaz… - Journal of General …, 2014 - rupress.org
… Addition of physiological levels (1 mM) of Mg 2+ raised the K a for cytoplasmic Ca 2+ to 30
µM (human and sheep) or 90 µM (rat) and raised the K a for luminal Ca 2+ to ∼1 mM in all …

[HTML][HTML] Potential of β2AR for added benefit in treating heart failure through a better understanding of signaling

K Walweel, E Cheesman, P Molenaar - Current Opinion in Physiology, 2023 - Elsevier
… Author links open overlay panel Kafa Walweel a , Elizabeth Cheesman a b , Peter Molenaar
… Dr Kafa Walweel is supported by grant (ORF2023-05) from The Prince Charles Hospital …

Mechanisms of SR calcium release in healthy and failing human hearts

K Walweel, DR Laver - Biophysical reviews, 2015 - Springer
Normal heart contraction and rhythm relies on the proper flow of calcium ions (Ca 2+ ) into
cardiac cells and between their intracellular organelles, and any disruption can lead to …

[HTML][HTML] Endothelin receptor antagonist improves donor lung function in an ex vivo perfusion system

K Walweel, K Skeggs, AC Boon, LE See Hoe… - Journal of Biomedical …, 2020 - Springer
Background A lung transplant is the last resort treatment for many patients with advanced lung
disease. The majority of donated lungs come from donors following brain death (BD). The …