4-AP	4-aminopyridine
5-HT	Serotonin receptors
AC	Adenylate cyclase
ACh	Acetylcholine
ADRA	Adrenergic receptors
BK	Large-conductance calcium-activated potassium channels
cGMP	Cyclic guanosine monophosphate
COX-2	Cyclooxygenase-2
CREB	cAMP response element-binding protein
DAG	diacylglycerol
EC50	half-maximal effective concentration
eNOS	Endothelial nitric oxide synthase
GI	Gastrointestinal
IBS	Irritable bowel syndrome
IK	Intermediate-conductance calcium-activated potassium channels
IL	Interleukin
iNOS	Inducible nitric oxide synthase
IP3	Inositol trisphosphate
IP3R	Inositol trisphosphate potassium receptor
KATP	ATP-sensitive potassium channels
LES	Lower esophageal sphincter
L-NAME	N(G)-nitro-L-arginine methyl ester
M2, M3	Muscarinic acetylcholine receptors
MLC20	20 kDa regulatory light chains
MLCK	Myosin light chain kinase
MLCP	Myosin light chain phosphatase
MPO	Myeloperoxidase
NMR	Nuclear magnetic resonance spectroscopy
NO	Nitric oxide
NOS	Nitric oxide synthase
ODQ	NO-sensitive guanylyl cyclase
PIP2	phosphatidylinositol 4,5-bisphosphate
PKA	Protein kinase A
PKC	Protein kinase C
PKG	Protein kinase G
PLB	phospholamban
PLCβ	phospholipase C beta
ROCK	Rho-associated protein kinase
RyR	Ryanodine receptor
SERCA2a	sarco/endoplasmic reticulum Ca2+-ATPase 2a
sGC	Soluble guanylate cyclase
SK	Small-conductance calcium-activated potassium channels
SR	Sarcoplasmic reticulum
TEA	Triethylamine
TNF	Tumor necrosis factor
TTX	Tetrodotoxin
VGCC	Voltage-gated calcium channel