Entry
Name
Morphine addiction - Lemur catta (Ring-tailed lemur)
Description
Morphine is an alkaloid from the plant extracts of opium poppy. Although morphine is highly effective for the treatment of pain, it is also known to be intensely addictive. We now know that the most important brain-reward circuit involves dopamine (DA) -containing neurons in the ventral tegmental area (VTA) of the midbrain and their target areas in the limbic forebrain, in particular, the nucleus accumbens (NAc) and frontal regions of cerebral cortex. Morphine can cause indirect excitation of VTA dopamine neurons by reducing inhibitory synaptic transmission mediated by GABAergic neurons. The chronic use of morphine is characterized by adaptive changes in neurons and neuronal communication; such adaptations (e.g., 'superactivation' of adenylyl cyclase) must underlie altered behaviour associated with morphine dependence and withdrawal syndrome, as well as drug-induced craving and relapse to drug use.
Class
Human Diseases; Substance dependence
BRITE hierarchy
Pathway map
Ortholog table
Other DBs
Organism
Lemur catta (Ring-tailed lemur) [GN:
lcat ]
Gene
123650029 G protein-activated inward rectifier potassium channel 1-like [KO:K04997 ]
123643345 KCNJ3; G protein-activated inward rectifier potassium channel 1 isoform X1 [KO:K04997 ]
123630738 KCNJ6; G protein-activated inward rectifier potassium channel 2 [KO:K05000 ]
123635181 KCNJ9; G protein-activated inward rectifier potassium channel 3 [KO:K05002 ]
123640996 KCNJ5; G protein-activated inward rectifier potassium channel 4 [KO:K04999 ]
123637429 CACNA1A; voltage-dependent P/Q-type calcium channel subunit alpha-1A isoform X1 [KO:K04344 ]
123646347 CACNA1B; voltage-dependent N-type calcium channel subunit alpha-1B isoform X1 [KO:K04849 ]
123628686 GABRA3; gamma-aminobutyric acid receptor subunit alpha-3 isoform X1 [KO:K05175 ]
123637997 GABRA1; gamma-aminobutyric acid receptor subunit alpha-1 [KO:K05175 ]
123645191 GABRA5; gamma-aminobutyric acid receptor subunit alpha-5 [KO:K05175 ]
123638879 GABRA6; gamma-aminobutyric acid receptor subunit alpha-6 [KO:K05175 ]
123624857 GABRA2; gamma-aminobutyric acid receptor subunit alpha-2 isoform X1 [KO:K05175 ]
123624869 GABRA4; gamma-aminobutyric acid receptor subunit alpha-4 [KO:K05175 ]
123644640 GABRB3; gamma-aminobutyric acid receptor subunit beta-3 isoform X1 [KO:K05181 ]
123637998 GABRB2; gamma-aminobutyric acid receptor subunit beta-2 isoform X1 [KO:K05181 ]
123624805 GABRB1; LOW QUALITY PROTEIN: gamma-aminobutyric acid receptor subunit beta-1 [KO:K05181 ]
123644398 GABRG3; gamma-aminobutyric acid receptor subunit gamma-3 [KO:K05186 ]
123637995 GABRG2; gamma-aminobutyric acid receptor subunit gamma-2 isoform X1 [KO:K05186 ]
123624085 GABRG1; gamma-aminobutyric acid receptor subunit gamma-1 [KO:K05186 ]
123634750 GABRD; gamma-aminobutyric acid receptor subunit delta [KO:K05184 ]
123628692 GABRE; gamma-aminobutyric acid receptor subunit epsilon [KO:K05185 ]
123628685 GABRQ; gamma-aminobutyric acid receptor subunit theta [KO:K05192 ]
123633062 GABRR1; gamma-aminobutyric acid receptor subunit rho-1 isoform X1 [KO:K05190 ]
123633064 GABRR2; gamma-aminobutyric acid receptor subunit rho-2 [KO:K05190 ]
123642471 GABRR3; gamma-aminobutyric acid receptor subunit rho-3 [KO:K05190 ]
123646636 GABBR2; gamma-aminobutyric acid type B receptor subunit 2 [KO:K04615 ]
123632808 GABBR1; gamma-aminobutyric acid type B receptor subunit 1 isoform X1 [KO:K04615 ]
123623249 GNAI2; guanine nucleotide-binding protein G(i) subunit alpha-2 [KO:K04630 ]
123647150 GNAI1; guanine nucleotide-binding protein G(i) subunit alpha-1 [KO:K04630 ]
123635002 GNAI3; guanine nucleotide-binding protein G(i) subunit alpha-3 [KO:K04630 ]
123625313 GNAO1; guanine nucleotide-binding protein G(o) subunit alpha isoform X1 [KO:K04534 ]
123636000 GNB1; guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 [KO:K04536 ]
123631640 GNB2; guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-2 [KO:K04537 ]
123640104 GNB3; guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-3 [KO:K07825 ]
123630284 GNB4; guanine nucleotide-binding protein subunit beta-4 [KO:K04538 ]
123622795 GNB5; guanine nucleotide-binding protein subunit beta-5 [KO:K04539 ]
123641343 GNG3; guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-3 [KO:K04540 ]
123627584 GNG4; guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-4 [KO:K04541 ]
123648542 guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-5-like [KO:K04542 ]
123633190 GNG7; guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-7 [KO:K04543 ]
123623917 GNG8; guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-8 [KO:K04544 ]
123646542 GNG10; guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-10 isoform X1 [KO:K04545 ]
123647376 GNG11; guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-11 [KO:K04546 ]
123637148 GNG14; LOW QUALITY PROTEIN: putative guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-14 [KO:K04347 ]
123635536 GNG12; guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-12 [KO:K04347 ]
123631427 GNG13; guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-13 [KO:K04547 ]
123647151 GNGT1; guanine nucleotide-binding protein G(T) subunit gamma-T1 [KO:K04548 ]
123620748 GNGT2; guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-T2 [KO:K04549 ]
123622310 guanine nucleotide-binding protein G(s) subunit alpha isoforms short isoform X1 [KO:K04632 ]
123639689 PDE1B; calcium/calmodulin-dependent 3',5'-cyclic nucleotide phosphodiesterase 1B isoform X1 [KO:K13755 ] [EC:3.1.4.17 ]
123647146 PDE1C; calcium/calmodulin-dependent 3',5'-cyclic nucleotide phosphodiesterase 1C isoform X1 [KO:K13755 ] [EC:3.1.4.17 ]
123643211 PDE1A; calcium/calmodulin-dependent 3',5'-cyclic nucleotide phosphodiesterase 1A isoform X1 [KO:K13755 ] [EC:3.1.4.17 ]
123644485 PDE7A; high affinity cAMP-specific 3',5'-cyclic phosphodiesterase 7A isoform X1 [KO:K18436 ] [EC:3.1.4.53 ]
123645085 PDE8A; high affinity cAMP-specific and IBMX-insensitive 3',5'-cyclic phosphodiesterase 8A isoform X1 [KO:K18437 ] [EC:3.1.4.53 ]
123648576 PDE8B; high affinity cAMP-specific and IBMX-insensitive 3',5'-cyclic phosphodiesterase 8B [KO:K18437 ] [EC:3.1.4.53 ]
Compound
D02271 Morphine hydrochloride hydrate (JP18)
Reference
Authors
Bailey CP, Connor M
Title
Opioids: cellular mechanisms of tolerance and physical dependence.
Journal
Reference
Authors
Williams JT, Christie MJ, Manzoni O
Title
Cellular and synaptic adaptations mediating opioid dependence.
Journal
Reference
Authors
Gintzler AR, Chakrabarti S
Title
Post-opioid receptor adaptations to chronic morphine; altered functionality and associations of signaling molecules.
Journal
Reference
Authors
Bonci A, Williams JT
Title
A common mechanism mediates long-term changes in synaptic transmission after chronic cocaine and morphine.
Journal
Reference
Authors
Liu JG, Anand KJ
Title
Protein kinases modulate the cellular adaptations associated with opioid tolerance and dependence.
Journal
Reference
Authors
Shoji Y, Delfs J, Williams JT
Title
Presynaptic inhibition of GABA(B)-mediated synaptic potentials in the ventral tegmental area during morphine withdrawal.
Journal
Reference
Authors
Zhang Y, Chen Q, Yu LC
Title
Morphine: a protective or destructive role in neurons?
Journal
Reference
Authors
Tso PH, Wong YH
Title
Molecular basis of opioid dependence: role of signal regulation by G-proteins.
Journal
Reference
Authors
Johnson SW, North RA
Title
Opioids excite dopamine neurons by hyperpolarization of local interneurons.
Journal
Reference
Authors
Madhavan A, Bonci A, Whistler JL
Title
Opioid-Induced GABA potentiation after chronic morphine attenuates the rewarding effects of opioids in the ventral tegmental area.
Journal
Reference
Authors
Bonci A, Williams JT
Title
Increased probability of GABA release during withdrawal from morphine.
Journal
Reference
Authors
Morikawa H, Paladini CA
Title
Dynamic regulation of midbrain dopamine neuron activity: intrinsic, synaptic, and plasticity mechanisms.
Journal
Reference
Authors
Xi ZX, Stein EA
Title
GABAergic mechanisms of opiate reinforcement .
Journal
Reference
Authors
Kalivas PW
Title
Neurotransmitter regulation of dopamine neurons in the ventral tegmental area.
Journal
Reference
Authors
Jalabert M, Bourdy R, Courtin J, Veinante P, Manzoni OJ, Barrot M, Georges F
Title
Neuronal circuits underlying acute morphine action on dopamine neurons.
Journal
Reference
Authors
Chakrabarti S, Gintzler AR
Title
Phosphorylation of Gbeta is augmented by chronic morphine and enhances Gbetagamma stimulation of adenylyl cyclase activity.
Journal
Reference
Authors
Ferrer-Alcon M, La Harpe R, Garcia-Sevilla JA
Title
Decreased immunodensities of micro-opioid receptors, receptor kinases GRK 2/6 and beta-arrestin-2 in postmortem brains of opiate addicts.
Journal
Related pathway
KO pathway
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