A1R	adenosine receptor subtype 1
A2R	adenosine receptor subtype 2
A3R	adenosine receptor subtype 3
AD	Alzheimer’s disease
ADA	adenosine deaminase
ADK	adenosine kinase
AICAR	5-aminoimidazole-4-carboxamide ribonucleotide
ALL	acute lymphoblastic leukemia
AML	acute myeloid leukemia
AMP	adenosine 5′-monophosphate
AMPK	AMP-activated protein kinase
ALS	amyotrophic lateral sclerosis
ATIC	AICAR formyltransferase/IMP cyclohydrolase
Ascl1	achaete-scute family bHLH transcription factor 1
BDNF	TrkB brain-derived neurotrophic factor
CD26	trimeric complexes dipeptidyl peptidase IV
CLL	chronic lymphoid leukemia
CN-I	cytosolic 5′-nucleotidase-I
CN-II	cytosolic 5′-nucleotidase II
CNS	central nervous system
Darpp-32	the gene encoding dopamine- and cAMP-regulated phosphoprotein 32
dCF	deoxycoformycin
ENT2	adenosine equilibrative transporters NBTI-insensitive
ES	embryonic stem cells
Foxp1	forkhead box P1
GMP	guanosine 5′-monophosphate
HPRT	the gene coding for HPRT
HPRT	hypoxanthine guanine phosphoribosyl transferase
HSPs	hereditary spastic paraplegias
IMP	inosine 5′-monophosphate
IMPDH	inosine-5′-monophosphate dehydrogenase
Ipaf	ice protease-activating factor
LND	Lesch–Nyhan disease
MAPK	mitogen activated protein kinases
6-MP	6-mercaptopurine
NT5C2	the gene coding for cN-II
NTPDases	5′-triphosphate diphosphohydrolases
NTPase	nucleoside 5-triphosphatase
PPAT	5-phosphoribosyl-1-pyrophosphate amidotransferase
PRPP	5-phosphoribosyl-1-pyrophosphate
P2XR	purinergic receptor subtype 2X
P2YR	purinergic receptor subtype 2Y
SAH	S-adenosylhomocysteine
SAHH	SAH hydrolase
SCID	severe combined immunodeficiency
SNPs	single nucleotide polymorphism
SP45	autosomic recessive spastic paraplegia 45
WNT4	wingless-type MMTV integration site family, member 4
XDH	xanthine dehydrogenase
XOD	xanthine oxidase