Abstract
Rationale
The d- and l-amphetamine sulphate isomers are used in the formulation of Adderall XR®, which is effective in the treatment of attention-deficit hyperactivity disorder (ADHD). The effects of these isomers on brain activity has not been examined using neuroimaging.
Objectives
This study determines the pharmacological magnetic resonance imaging blood-oxygenation-level-dependent (BOLD) response in rat brain regions after administration of each isomer.
Materials and methods
Rats were individually placed into a 2.35 T Bruker magnet for 60 min to achieve basal recording of variation in signal intensity. Either saline (n = 9), d-amphetamine sulphate (2 mg/kg, i.p.; n = 9) or l-amphetamine sulphate (4 mg/kg, i.p.; n = 9) were administered, and recording continued for a further 90 min. Data were analysed for BOLD effects using statistical parametric maps. Blood pressure, blood gases and respiratory rate were monitored during scanning.
Results
The isomers show overlapping effects on the BOLD responses in areas including nucleus accumbens, medial entorhinal cortex, colliculi, field CA1 of hippocampus and thalamic nuclei. The l-isomer produced greater global changes in the positive BOLD response than the d-isomer, including the somatosensory and motor cortices and frontal brain regions such as the orbitofrontal cortices, prelimbic and infralimbic cortex which were not observed with the d-isomer.
Conclusions
The amphetamine isomers produce different BOLD responses in brain areas related to cognition, pleasure, pain processing and motor control probably because of variations on brain amine systems such as dopamine and noradrenaline. The isomers may, therefore, have distinct actions on brain regions affected in ADHD patients.
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References
Arnsten AF, Li BM (2005) Neurobiology of executive functions: catecholamine influences on prefrontal cortical functions. Biol Psychiatry 57:1377–1384
Bandettini PA, Wong EC (1997) A hypercapnia-based normalization method for improved spatial localization of human brain activation with fMRI. Biomed 10(4–5):197–203
Bartus RT, Levere TE (1977) Frontal decortication in rhesus monkeys: a test of the interference hypothesis. Brain Res 119:233–248
Bechara A, Damasio H, Tranel D, Anderson SW (1998) Dissociation of working memory from decision making within the human prefrontal cortex. J Neurosci 18:428–437
Bechara A, Damasio H, Damasio AR, Lee GP (1999) Different contributions of the human amygdala and ventromedial prefrontal cortex to decision-making. J Neurosci 19:5473–5481
Berridge KC (2003) Pleasures of the brain. Brain Cogn 52(1):106–128
Birrell JM, Brown VJ (2000) Medial frontal cortex mediates perceptual attentional set shifting in the rat. J Neurosci 20:4320–4324
Blair RJ (2004) The roles of orbital frontal cortex in the modulation of antisocial behaviour. Brain Cogn 55(1):198–208
Bonson KR, Grant SJ, Contoreggi CS, Links JM, Metcalfe J, Weyl HL, Kurian V, Ernst M, London ED (2002) Neural systems and cue-induced cocaine craving. Neuropsychopharmacology 26:376–386
Brog JS, Salyapongse A, Deutch AY, Zahm DS (1993) The patterns of afferent innervation of the core and shell in the “accumbens” part of the rat ventral striatum: immunohistochemical detection of retrogradely transported fluoro-gold. J Comp Neurol 338:255–278
Carboni E, Imperato A, Perezzani L, Di Chiara G (1989) Amphetamine, cocaine, phencyclidine and nomifensine increase extracellular dopamine concentrations preferentially in the nucleus accumbens of freely moving rats. Neuroscience 28:653–661
Casey BJ, Castellanos FX, Giedd JN, Marsh WL, Hamburger SD, Schubert AB, Vauss YC, Vaituzis AC, Dickstein DP, Sarfatti SE, Rapoport JL (1997) Implication of right frontostriatal circuitry in response inhibition and attention-deficit/hyperactivity disorder. J Am Acad Child Adolesc Psych 36:374–383
Cash D, Lowe AS, Roberts TJ, Ireland MD, Williams SCR (2002) In vivo mapping of mouse brain response to d-amphetamine using bold contrast FMRI. J Psychopharmacol (Berl) 16:A65
Chudasama Y, Passetti F, Rhodes SE, Lopian D, Desai A, Robbins TW (2003) Dissociable aspects of performance on the 5-choice serial reaction time task following lesions of the dorsal anterior cingulate, infralimbic and orbitofrontal cortex in the rat: differential effects on selectivity, impulsivity and compulsivity. Behav Brain Res 146:105–119
Clarke PB, Franklin KB (1992) Infusions of 6-hydroxydopamine into the nucleus accumbens abolish the analgesic effect of amphetamine but not of morphine in the formalin test. Brain Res 580:106–110
Concannon JT, Schechter MD (1982) Failure of amphetamine isomers to decrease hyperactivity in developing rats. Pharmacol Biochem Behav 17:5–9
Coyle JT, Snyder SH (1969) Catecholamine uptake by synaptosomes in homogenates of rat brain: stereospecificity in different areas. J Pharmacol Exp Ther 170:221–231
Dalley JW, Thomas KL, Howes SR, Tsai TH, Aparicio-Legarza MI, Reynolds GP, Everitt BJ, Robbins TW (1999) Effects of excitotoxic lesions of the rat prefrontal cortex on CREB regulation and presynaptic markers of dopamine and amino acid function in the nucleus accumbens. Eur J Neurosci 11:1265–1274
Davis TL, Kwong KK, Weisskoff RM, Rosen BR (1998) Calibrated functional MRI: mapping the dynamics of oxidative metabolism. Proc Natl Acad Sci USA 95:1834–1839
De Bruin JP, Feenstra MG, Broersen LM, Van Leeuwen M, Arens C, De Vries S, Joosten RN (2000) Role of the prefrontal cortex of the rat in learning and decision making: effects of transient inactivation. Prog Brain Res 126:103–113
Devous MD Sr, Trivedi MH, Rush AJ (2001) Regional cerebral blood flow response to oral amphetamine challenge in healthy volunteers. J Nucl Med 42:535–542
Dias R, Robbins TW, Roberts AC (1996) Dissociation in prefrontal cortex of affective and attentional shifts. Nature 380:69–72
Dixon AL, Prior M, Morris PM, Shah YB, Joseph MH, Young AM (2005) Dopamine antagonist modulation of amphetamine response as detected using pharmacological MRI. Neuropharmacology 48:236–245
Easton N, Shah YB, Marshall FH, Fone KC, Marsden CA (2006) Guanfacine produces differential effects in frontal cortex compared to striatum: assessed by phMRI BOLD contrast. Psychopharmacology (Berl) 189:369–385
Easton N, Marshall F, Fone K, Marsden C (2007a) Atomoxetine produces changes in cortico-basal thalamic loop circuits: assessed by phMRI BOLD contrast. Neuropharmacology 52:812–826
Easton N, Steward CA, Marshall FH, Fone KC, Marsden CA (2007b) Effects of amphetamine isomers, methylphenidate and atomoxetine on synaptosomal and synaptic vesicle accumulation and release of dopamine and noradrenaline in-vitro in the rat brain. Neuropharmacology 52:405–414
Febo M, Segarra AC, Nair G, Schmidt K, Duong TQ, Ferris CF (2005) The neural consequences of repeated cocaine exposure revealed by functional MRI in awake rats. Neuropsychopharmacology 30:936–943
Ferris RM, Tang FL, Maxwell RA (1972) A comparison of the capacities of isomers of amphetamine, deoxypipradrol and methylphenidate to inhibit the uptake of tritiated catecholamines into rat cerebral cortex slices, synaptosomal preparations of rat cerebral cortex, hypothalamus and striatum and into adrenergic nerves of rabbit aorta. J Pharmacol Exp Ther 181:407–416
Flecknell PA, Waynsworth HB (1992) Experimental and surgical techniques in rats. Academic, San Diego
Friston KJ, Ashburner J, Poline JB, Frith CD, Heather JD, Frackowiak RSJ (1995a) Spatial registration and normalization of images. Hum Brain Map 2:165–189
Friston KJ, Holmes AP, Worsley KJ, Poline JP, Frith CD, Frackowiak RSJ (1995b) [SPM_3] Statistical parametric maps in functional imaging: a general linear approach. Hum Brain Map 2:189–210
Giorgi O, Piras G, Lecca D, Corda MG (2005) Differential activation of dopamine release in the nucleus accumbens core and shell after acute or repeated amphetamine injections: a comparative study in the Roman high- and low-avoidance rat lines. Neuroscience 135:987–998
Godefroy O, Rousseaux M (1996) Divided and focused attention in patients with lesion of the prefrontal cortex. Brain Cogn 30:155–174
Goldberg ME, Wurtz RH (1972) Activity of superior colliculus in behaving monkey. II. Effect of attention on neuronal responses. J Neurophysiol 35:560–574
Graziano MS, Taylor CS, Moore T, Cooke DF (2002) The cortical control of movement revisited. Neuron 36:349–362
Harris JE, Baldessarini RJ (1973) Uptake of (3H)-catecholamines by homogenates of rat corpus striatum and cerebral cortex: effects of amphetamine analogues. Neuropharmacology 12:669–679
Hedou G, Homberg J, Martin S, Wirth K, Feldon J, Heidbreder CA (2000) Effect of amphetamine on extracellular acetylcholine and monoamine levels in subterritories of the rat medial prefrontal cortex. Eur J Pharmacol 390:127–136
Heikkila RE, Orlansky H, Mytilineou C, Cohen G (1975) Amphetamine: evaluation of d- and l-isomers as releasing agents and uptake inhibitors for 3H-dopamine and 3H-norepinephrine in slices of rat neostriatum and cerebral cortex. J Pharmacol Exp Ther 194:47–56
Hennig J, Nauerth A, Friedburg H (1986) RARE imaging: a fast imaging method for clinical MR. Magn Reson Med 3:823–833
Hertel P, Mathe JM, Nomikos GG, Iurlo M, Mathe AA, Svensson TH (1995) Effects of d-amphetamine and phencyclidine on behavior and extracellular concentrations of neurotensin and dopamine in the ventral striatum and the medial prefrontal cortex of the rat. Behav Brain Res 72:103–114
Holmes JC, Rutledge CO (1976) Effects of the d- and l-isomers of amphetamine on uptake, release and catabolism of norepinephrine, dopamine and 5-hydroxytryptamine in several regions of rat brain. Biochem Pharmacol 25:447–451
Ignashchenkova A, Dicke PW, Haarmeier T, Thier P (2004) Neuron-specific contribution of the superior colliculus to overt and covert shifts of attention. Nat Neurosci 7:56–64
Jackson ME, Frost AS, Moghaddam B (2001) Stimulation of prefrontal cortex at physiologically relevant frequencies inhibits dopamine release in the nucleus accumbens. J Neurochem 78:920–923
Jane JA, Masterton RB, Diamond IT (1965) The function of the tectum for attention to auditory stimuli in the cat. J Comp Neurol 125:165–191
Jaskiw GE, Weinberger DR, Crawley JN (1991a) Microinjection of apomorphine into the prefrontal cortex of the rat reduces dopamine metabolite concentrations in microdialysate from the caudate nucleus. Biol Psychiatry 29:703–706
Jaskiw GE, Tizabi Y, Lipska BK, Kolachana BS, Wyatt RJ, Gilad GM (1991b) Evidence for a frontocortical-septal glutamatergic pathway and compensatory changes in septal glutamate uptake after cortical and fornix lesions in the rat. Brain Res 550:7–10
Jodo E, Suzuki Y, Kayama Y (2000) Selective responsiveness of medial prefrontal cortex neurons to the meaningful stimulus with a low probability of occurrence in rats. Brain Res 856:68–74
Jones N, O’Neill MJ, Tricklebank M, Libri V, Williams SCR (2005) Examining the neural targets of the AMPA receptor potentiator LY404187 in the rat brain using pharmacological magnetic resonance imaging. Psychopharmacology (Berl) 180:743–751
Kalisch R, Elbel GK, Gossl C, Czisch M, Auer DP (2001) Blood pressure changes induced by arterial blood withdrawal influence bold signal in anesthesized rats at 7 Tesla: implications for pharmacologic mri. Neuroimage 14:891–898
Kalisch R, Delfino M, Murer MG, Auer DP (2005) The phenylephrine blood pressure clamp in pharmacologic magnetic resonance imaging: reduction of systemic confounds and improved detectability of drug-induced BOLD signal changes. Psychopharmacology (Berl) 180:774–780
Kankaanpaa A, Meririnne E, Lillsunde P, Seppala T (1998) The acute effects of amphetamine derivatives on extracellular serotonin and dopamine levels in rat nucleus accumbens. Pharmacol Biochem Behav 59:1003–1009
Karreman M, Moghaddam B (1996) The prefrontal cortex regulates the basal release of dopamine in the limbic striatum: an effect mediated by ventral tegmental area. J Neurochem 66:589–598
Kastrup A, Kruger G, Glover GH, Moseley ME (1999a) Assessment of cerebral oxidative metabolism with breath holding and fMRI. Magn Reson Med 42:608–611
Kastrup A, Kruger G, Glover GH, Neumann-Haefelin T, Moseley ME (1999b) Regional variability of cerebral blood oxygenation response to hypercapnia. Neuroimage 10:675–681
Kesner RP (1989) Retrospective and prospective coding of information: role of the medial prefrontal cortex. Exp Brain Res 74:163–167
Kluver H, Bucy PC (1997) Preliminary analysis of functions of the temporal lobes in monkeys. J Neuropsychiatry Clin Neurosci 9:606–620
Kohler C, Sundberg H (1977) Locomotor activity and exploratory behavior after medial entorhinal cortex lesions in the albino rat. Behav Biol 20:419–432
Kolachana BS, Saunders RC, Weinberger DR (1995) Augmentation of prefrontal cortical monoaminergic activity inhibits dopamine release in the caudate nucleus: an in vivo neurochemical assessment in the rhesus monkey. Neuroscience 69:859–868
Kuczenski R, Segal DS, Cho AK, Melega W (1995) Hippocampus norepinephrine, caudate dopamine and serotonin, and behavioral responses to the stereoisomers of amphetamine and methamphetamine. J Neurosci 15:1308–1317
Lee JS, Kim BN, Kang E, Lee DS, Kim YK, Chung JK, Lee MC, Cho SC (2005) Regional cerebral blood flow in children with attention deficit hyperactivity disorder: comparison before and after methylphenidate treatment. Hum Brain Map 24:157–164
Liu ZHM, Schmidt KF, Sicard KM, Duong TQ (2004) Imaging oxygen consumption in forepaw somatosensory stimulation in rats under isoflurane anesthesia. Magn Reson Med 52:277–285
Malmo RB (1942) Interference factors in delayed response in monkeys after removal of frontal lobes. J Neurophysiol 5:295–308
Manes F, Sahakian B, Clark L, Rogers R, Antoun N, Aitken M, Robbins T (2002) Decision-making processes following damage to the prefrontal cortex. Brain 125:624–639
Mediavilla A, Feria M, Fernandez JF, Cagigas P, Pazos A, Florez J (1979) The stimulatory action of d-amphetamine on the respiratory centre, and its mediation by a central alpha-adrenergic mechanism. Neuropharmacology 18:133–142
Miyamoto S, Leipzig JN, Lieberman JA, Duncan GE (2000) Effects of ketamine, MK-801, and amphetamine on regional brain 2-deoxyglucose uptake in freely moving mice. Neuropsychopharmacology 22:400–412
Muir JL, Everitt BJ, Robbins TW (1996) The cerebral cortex of the rat and visual attentional function: dissociable effects of mediofrontal, cingulate, anterior dorsolateral, and parietal cortex lesions on a five-choice serial reaction time task. Cereb Cortex 6:470–481
Mulder AB, Nordquist R, Orgut O, Pennartz CM (2000) Plasticity of neuronal firing in deep layers of the medial prefrontal cortex in rats engaged in operant conditioning. Prog Brain Res 126:287–301
Muller JR, Philiastides MG, Newsome WT (2005) Microstimulation of the superior colliculus focuses attention without moving the eyes. Proc Natl Acad Sci USA 102:524–529
Murase S, Grenhoff J, Chouvet G, Gonon FG, Svensson TH (1993) Prefrontal cortex regulates burst firing and transmitter release in rat mesolimbic dopamine neurons studied in vivo. Neurosci Lett 157:53–56
Olds ME, Olds J (1963) Pharmacological patterns in subcortical reinforcement behavior. Int J Neuropharmacol 64:309–325
Parkinson JA, Olmstead MC, Burns LH, Robbins TW, Everitt BJ (1999) Dissociation in effects of lesions of the nucleus accumbens core and shell on appetitive Pavlovian approach behavior and the potentiation of conditioned reinforcement and locomotor activity by d-amphetamine. J Neurosci 19:2401–2411
Phillipson OT, Griffiths AC (1985) The topographic order of inputs to nucleus accumbens in the rat. Neuroscience 16:275–296
Posse S, Kemna LJ, Elghahwagi B, Wiese S, Kiselev VG (2001) Effect of graded hypo- and hypercapnia on fMRI contrast in visual cortex quatification of T (*) (2) changes by multiecho EPI. Magn Reson Med 46:264–271
Rees H, Roberts MH (1987) Anterior pretectal stimulation alters the responses of spinal dorsal horn neurones to cutaneous stimulation in the rat. J Physiol 385:415–436
Rogeness GA, Javors MA, Pliszka SR (1992) Neurochemistry and child and adolescent psychiatry. J Am Acad Child Adolesc Psych 31:765–781
Rogers RD, Owen AM, Middleton HC, Williams EJ, Pickard JD, Sahakian BJ, Robbins TW (1999) Choosing between small, likely rewards and large, unlikely rewards activates inferior and orbital prefrontal cortex. J Neurosci 19:9029–9038
Rose SE, Janke AL, Strudwick MW, McMahon KL, Chalk JB, Snyder P, De zubicaray GI (2006) Assessment of dynamic susceptibility contrast cerebral blood flow response to amphetamine challenge: a human pharmacological magnetic resonance imaging study at 1.5 and 4 T. Magn Reson Med 55(1):9–15
Rostrup E, Law I, Blinkenberg M, Larsson HB, Born AP, Holm S, Paulson OB (2000) Regional differences in the CBF and BOLD responses to hypercapnia: a combined PET and fMRI study. Neuroimage 11:87–97
Sachs C, Jonsson G, Fuxe K (1973) Mapping of central noradrenaline pathways with 6-hydroxy-DOPA. Brain Res 63:249–261
Sanes JN (2003) Neocortical mechanisms in motor learning. Curr Opin Neurobiol 13:225–231
Saunders RC, Kolachana BS, Weinberger DR (1994) Local pharmacological manipulation of extracellular dopamine levels in the dorsolateral prefrontal cortex and caudate nucleus in the rhesus monkey: an in vivo microdialysis study. Exp Brain Res 98:44–52
Schenk F, Inglin F, Gyger M (1983) Activity and exploratory behavior after lesions of the medial entorhinal cortex in the woodmouse (Apodemus sylvaticus). Behav Neural Biol 37:89–107
Schmidt KF, Febo M, Shen Q, Luo F, Sicard KM, Ferris CF, Stein EA, Duong TQ (2006) Hemodynamic and metabolic changes induced by cocaine in anesthetized rat observed with multimodal functional MRI. Psychopharmacology (Berl) 185:479–486
Scott SH (2000) Role of motor cortex in coordinating multi-joint movements: is it time for a new paradigm? Can J Physiol Pharm 78:923–933
Segal DS (1975) Behavioral characterization of d- and l-amphetamine: neurochemical implications. Science 190:475–477
Sellings LH, Clarke PB (2003) Segregation of amphetamine reward and locomotor stimulation between nucleus accumbens medial shell and core. J Neurosci 23:6295–6303
Sharp T, Zetterstrom T, Ljungberg T, Ungerstedt U (1987) A direct comparison of amphetamine-induced behaviours and regional brain dopamine release in the rat using intracerebral dialysis. Brain Res 20(401):322–330
Shimm DS, Logue GL, Maltbie AA, Dugan S (1979) Medical management of chronic cancer pain. JAMA 241:2408–2412
Sicard KM, Duong TQ (2005) Effects of hypoxia, hyperoxia, and hypercapnia on baseline and stimulus-evoked BOLD, CBF, and CMRO2 in spontaneously breathing animals. Neuroimage 25:850–858
Sicard K, Shen Q, Brevard ME, Sullivan R, Ferris CF, King JA, Duong TQ (2003) Regional cerebral blood flow and BOLD responses in conscious and anesthetized rats under basal and hypercapnic conditions: implications for functional MRI studies. J Cereb Blood Flow Metab 23:472–481
Siggaard-Andersen O (1971) An acid-base chart for arterial blood with normal and pathophysiological reference areas. Scand J Clin Lab Invest 27:239–245
Skoubis PD, Hradil V, Chin CL, Luo Y, Fox GB, McGaraughty S (2006) Mapping brain activity following administration of a nicotinic acetylcholine receptor agonist, ABT-594, using functional magnetic resonance imaging in awake rats. Neuroscience 137:583–591
Sokoloff L (1981) The deoxyglucose method for the measurement of local glucose utilization and the mapping of local functional activity in the central nervous system. Int Rev Neurobiol 22:287–333
Sprague JM (1991) The role of the superior colliculus in facilitating visual attention and form perception. Proc Natl Acad Sci USA 88:1286–1290
Tipper CM, Cairo TA, Woodward TS, Phillips AG, Liddle PF, Ngan ET (2005) Processing efficiency of a verbal working memory system is modulated by amphetamine: an fMRI investigation. Psychopharmacology (Berl) 180:634–643
Tuor UI, McKenzie E, Tomanek B (2002) Functional magnetic resonance imaging of tonic pain and vasopressor effects in rats. Magn Reson Imaging 20:707–712
Veazey RB, Severin CM (1980) Efferent projections of the deep mesencephalic nucleus (pars medialis) in the rat. J Comp Neurol 190:245–258
Volkow ND, Chang L, Wang GJ, Fowler JS, Ding YS, Sedler M, Logan J, Franceschi D, Gatley J, Hitzemann R, Gifford A, Wong C, Pappas N (2001) Low level of brain dopamine D2 receptors in methamphetamine abusers: association with metabolism in the orbitofrontal cortex. Am J Psychiatry 158:2015–2021
Wang XM, Yuan B, Hou ZL (1992) Role of the deep mesencephalic nucleus in the antinociception induced by stimulation of the anterior pretectal nucleus in rats. Brain Res 577:321–325
Webb SS, Smith GM, Evans WO, Webb NC (1978) Toward the development of a potent, nonsedating, oral analgesic. Psychopharmacology (Berl) 60:25–28
Wilkins AJ, Shallice T, McCarthy R (1987) Frontal lesions and sustained attention. Neuropsychologia 25:359–365
Willson MC, Wilman AH, Bell EC, Asghar SJ, Silverstone PH (2004) Dextroamphetamine causes a change in regional brain activity in vivo during cognitive tasks: a functional magnetic resonance imaging study of blood oxygen level-dependent response. Biol Psychiatry 56:284–291
Wise RA (1980) The dopamine synapse and the notion of “pleasure centers” in the brain. Trends Neurosci 3:91–94
Yeomans JS (1982) The cells and axons mediating medial forebrain bundle reward. In: Hoebel BG, Novin D (eds) The neural basis of feeding and reward. Haer Institute, Brunswick, ME
Acknowledgements
The authors wish to thank Malcolm Prior for MRI technical assistance. This work was funded by Shire pharmaceuticals.
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Easton, N., Marshall, F., Fone, K.C.F. et al. Differential effects of the d- and l- isomers of amphetamine on pharmacological MRI BOLD contrast in the rat. Psychopharmacology 193, 11–30 (2007). https://doi.org/10.1007/s00213-007-0756-5
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DOI: https://doi.org/10.1007/s00213-007-0756-5