Abstract
Rats that consume a diet 50% rich in protein exhibit hyperactivity and hyperresponsiveness to nociceptive stimuli, in which facilitation of dopaminergic activity has been implicated. We studied the regional changes in the concentrations of dopamine (DA) and its metabolites, dihydroxyphenylacetic acid (DOPAC) and homovanillic acid (HVA) in the brains of rats that were maintained on high-protein (HP, 50% casein), normal-protein (NP, 20% casein), and low-protein (LP, 8% casein) diets for 36 weeks. Brain nuclei that represented different DAergic systems were punchdissected and analyzed using HPLC. In the substantia nigra, the striatum, and the dentate gyrus, DA concentrations decreased and increased, respectively, with a decrease and increase in dietary protein (p<0.05 compared to the NP diet). Similar trends in the effect of the HP diet were observed in the ventral tegmental area, amygdala, frontal cortex, subiculum, centromedial nucleus (CM) of the thalamus, and inferior colliculi (IC), although the differences in DA concentrations were not statistically significant. These brain areas also showed a pattern of decreased DA concentration in association with the LP diet, and the differences were statistically significant (p<0.05) in the CM and IC. DA concentrations in most regions of the midbrain and brainstem were not different between the diet groups, nor were consistent trends observed in those regions. Also, there were no consistent relationships between DOPAC/DA and HVA/DA ratios and dietary protein level. These data suggest that only discrete dopaminergic neuronal circuits in the rat forebrain were sensitive to changes in dietary protein level.
Similar content being viewed by others
References
Bannon, M.J., and Roth, R.H. 1983. Pharmacology of mesocortical dopamine neurons. Pharmacol. Rev. 35(1):53–68.
Bartholini, G., Stadler, H., Gadea-Ciria, M., and Lloyd, K.G. 1977. Interaction of dopaminergic and cholinergic neurons in the extrapyramidal and limbic systems.in, Costa, E., and Gessa, G.L. (eds.), Advances in Biochemical Psychopharmacology, vol. 16, Raven Press, New York, pp. 391–395.
Bischoff, S. 1986. Mesohippocampal dopamine system: characterization, function, and clinical implications. Pages 1–32,in Isaacson, R.L., and Pribram, K.H. (eds.), The Hippocampus, vol. 3, Plenum Publishing Corp. New York.
Brock, J.W., and Prasad, C. 1991. Motor, but not sensory, cortical potentials are amplified by high-protein diet. Physiol. Behav. 50:887–893.
Brownstein, M., Saavedra, J.M., and Palkovits, M. 1974. Norepinephrine and dopamine in the limbic system of the rat. Brain Res. 79:431–436.
Carboni, E., Imperato, A., Perezzani, L., and 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.
Costa, E., Panula, P., Thompson, H.K., and Cheny, D.L. 1983. The trans-synaptic regulation of the septo-hippocampal cholinergic neurons. Life Sci. 32:165–179.
Damsma, G., Wenkstern, D., Pfaus, J.G., Phillips, A.G., and Fibiger, H.C. 1992. Sexual behavior increases dopamine transmission in the nucleus accumbens and striatum of male rats: comparison with novelty and locomotion. Behav. Neurosci. 106(1):181–191.
During, M.J., Acworth, I.N., and Wurtman, R.J. 1989. Dopamine release in the striatum: physiological coupling to tyrosine supply. J. Neurochem. 52:1449–1454.
Fallon, J.H., and Loughlin, S.E. 1985. Substantia nigra. Pages 353–374,in Paxinos, G. (ed.), The Rat Nervous System, Academic Press, Australia.
Fanelli, M., Nahmod, V.E., Torres, N., Santajuliana, D., Garcia, S.I., Finkielman, S., and Pirola, C.J. 1992. Brain amines in glucocorticoid-induced hypertension in the rat. Neurosci. Lett 135:189–192.
Galey, D., Durkin, T., Sifakis, G., Kempf, E., and Jaffard, R. 1985. Facilitation of spontaneous and learned spatial behaviors following 6-hydroxydopamine lesions of the lateral septum: a cholinergic hypothesis. Brain Res. 340:171–174.
Gardier, A.M., Trouvin, J.H., Orosco, M., Nicolaidis, S., and Jacquot, C. 1988. Biogenic amines and turnover in discrete rat hypothalamic and amygdalar feeding related structures by an improved LC-ECD assay. Biogenic Amines 5(2):177–189.
German, D.C., Manaye, K., Smith, W.K., Woodward, D.J., and Saper, C.B. 1989. Midbrain dopaminergic cell loss in Parkinson's disease: computer visualization. Ann. Neurol. 26:507–514.
Glaeser, B.S., Maher, T.J., and Wurtman, R.J. 1983. Changes in brain levels of acidic, basic, and neutral amino acids after consumption of single meals containing various proportions of protein. J. Neurochem. 41(4):1016–1021.
Growden, J.H., Melamed, E., Logue, M., Hefti, F., and Wurtman, R.J. 16. 1982. Effects of orall-tyrosine administration on CSF tyrosine and homovanillic acid levels in patients with Parkinson's Disease. Life Sci. 30:827–832.
Hamdi, A., Onaivi, E.S., and Prasad, C. 1992. A low protein-high carbohydrate diet decreases D2 dopamine receptor density in rat brain. Life Sci. 50:1529–1534.
Heffner, T.G., Hartman, J.A., and Seiden, L.S. 1980. Feeding increases dopamine metabolism in the rat brain. Science 208:1168–1170.
Hjemdahl, P. 1984. Catecholamine measurements by high-performance liquid chromatography. Am. J. Physiol. 247 (Endrocrinol. Metab. 10):E13-E20.
Kabani, N.J., Reader, T.A., and Dykes, R.W. 1990. Monoamines and their metabolites in somatosensory, visual, and cingulate cortices of adult rat: differences in content and lack of sidedness. Neurochem. Res. 15(10):1031–1036.
Kaneyuki, T., Morimasa, T., and Shohmori, T. 1984. Relationship of tyrosine concentration to catecholamine levels in rat brain. Acta Med. Okayama 38(4):403–407.
Langlais, P.J., Walsh, F.X., Stevens, T.J., and Bird, E.D. Estimation of dopamine turnover in striatal, limbic and frontal cortical areas of human brain. Soc. Neurosci. Abstr. 8:114, 1982.
Lavielle, S., Tassin, J.P., Thierry, A.M., Blanc, G., Herve, D., Barthelemy, C., and Glowinski, J. 1978. Blockade by benzodiazepines of the selective high increase in dopamine turnover induced by stress in mesocortical dopaminergic neurons of the rat. Brain Res. 168:585–594.
LeDoux, J.E., Ruggiero, D.A., Forest, R., Stornetta, R. and Reis, D.J. 1987. Topographic organization of convergent projections to the thalamus from the inferior colliculus and spinal cord in the rat. J. Comp. Neurol. 264:123–146.
Le Moal, M., and Simon, H. 1991. Mesocorticolimbic dopaminergic network: functional and regulatory roles. Physiol. Rev. 71(1):155–234.
Louilot, A., Taghzouti, K., Simon, H., and Le Moal, M. 1989. Limbic system, basal ganglia, and dopaminergic neurons. Brain Behav. Evol. 33:157–161.
Lindvall, O., Bjorklund, A., and Divac, I. 1977. Organization of mesencephalic dopamine neurons projecting to neocortex and septum. Pages 39–46,in Costa, E., and Gessa, G.L. (eds.), Advances in Biochemical Psychopharmacology, vol. 16, Raven Press, New York.
Moore, R.Y., and Bloom, F.E. 1978. Central catecholamine neuron systems: anatomy and physiology of the dopamine systems. Ann. Rev. Neurosci. 1:129–169.
Munkvad, I., Pakkenberg, H., and Randrup, A. 1968. Aminergic systems in basal ganglia associated with stereotyped hyperactive behavior and catalepsy. Brain Behav. Evol. 1:89–100.
Niemegeers, C.J.E., McGuire, J.L., and Janssen, P.A.J. 1978. Domperidone, a novel gastrokinetic drug. Pharmacologist 20:209.
Oades, R.D., Taghzouti, K., Rivet, J.M., Simon, H. and Le Moal, M. 1986. Locomotor activity in relation to dopamine and noradrenaline in t he nucleus accumbens, septal and frontal areas: a 6-hydroxydopamine study. Neuropsychobiology 16:37–42.
Onaivi, E.S., Payne, S., Brock, J.W., Hamdi, A., Farooqui, S., and Prasad, C. 1991. The performance of Sprague-Dawley and Hooded rats in the shuttle-box avoidance paradigm is dependent on the level of protein in the diet. IBRO World Congr. Neurosci. Abstr. 1:424.
Onaivi, E.S., Brock, J.W., and Prasad, C. 1992. Dietary protein levels alter rat behavior. Nutr. Res. 12:1025–1039.
Palkovits, M. 1973. Isolated removal of hypothalamic or other brain nuclei of the rat. Brain Res. 59:449–450.
Palkovits, M., Brownstein, M., Saavedra, J.M., and Axelrod, J. 1974. Norepinephrine and dopamine content of hypothalamic nuclei of the rat. Brain Res. 77:137–149.
Paxinos, G., and Watson, C. 1986. The Rat Brain in Stereotaxic Coordinates, 2nd Ed., Academic Press, Inc. San Diego, CA.
Peters, J.C., and Harper, A.E. 1985. Adaptation of rats to diets containing different levels of protein: effects on food intake, plasma and brain amino acid concentrations and brain neurotransmitter metabolism. J. Nutr. 115:382–398.
Peters, J.C., and Harper, A.E. 1987. Acute effects of dietary protein on food intake, tissue amino acids, and brain serotonin. Am. J. Physiol. 252:R902-R914.
Plantz, R.G., Williston, J.S., and Jewett, D.L. 1981. Effects of undernutrition on development of far-field auditory brain stem responses in rat pups. Brain Res. 68:319–326.
Prasad, C., Hamdi, A., Brock, J.W., and Hilton, C.W. 1992. Cyclo(His-Pro) and Food Intake. Pages 277–289,in Bray, G., and Ryan, D.H. (eds.), The science of food regulation. Pennington Center Nutrition Series, vol 2, Louisiana State University Press, Baton Rouge, LA.
Raab, A., and Oswald, R. 1980. Coping with social conflict: impact on the activity of tyrosine hydroxylase in the limbic system and in the adrenals. Physiol. Behav. 24:387–394.
Ranje, C., and Ungerstedt, U. 1977. High correlations between number of dopamine cells, dopamine levels and motor performance. Brain Res. 134:83–93.
Spring, B. 1986. Effects of foods and nutrients on the behavior of normal individuals. Pages 1–47,in Wurtman, R.J., and Wurtman, J.J. (eds.), Nutrition and the Brain, vol 7, Raven Press, New York.
Suave, Y., and Reader, T.A. 1988. Effects of alpha-methyl-ptyrosine on monoamines and catecholamine receptors in rat cerebral cortex and neostriatum. Neurochem. Res. 13:807–815.
Weiss, J.M., Goodman, P.A., Losito, B.G., Corrigan, S., Charry, J.M., and Bailey, W.H. 1981. Behavioral depression produced by an uncontrollable stressor: relationship to norepinephrine, dopamine, and serotonin levels in various regions of rat brain. Brain Res. Rev. 3:167–205.
Westerink, B.H.C., and De Vries, J.B. 1991. Effect of precursor loading on the synthesis rate and release of dopamine and serotonin in the striatum: a microdialysis study in conscious rats. J. Neurochem. 56:228–233.
Winick, M. 1970. Nutrition and mental development. Med. Clin. N. Am. 54:1413–1429.
Woods, S.K., and Meyer, J.S. 1991. Exogenous tyrosine potentiates the methylphenidate-induced increase in extracellular dopamine in the nucleus accumbens: a microdialysis study. Brain Res. 560:97–105.
Wurtman, R.J., Hefty, F., and Melamed, E. 1981. Precursor control of neurotransmitter synthesis. Pharmacol. Rev. 32:315–335.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Farooqui, S.M., Brock, J.W., Onaivi, E.S. et al. Differential modulation of dopaminergic systems in the rat brain by dietary protein. Neurochem Res 19, 167–176 (1994). https://doi.org/10.1007/BF00966812
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00966812