We studied the possibilities of inhibition of neurodegeneration in MPTP-induced model of Parkinson’s disease (PD) in C57Bl/6J mice and transgenic model of early PD stage (5-monthold B6.Cg-Tg(Prnp-SNCA*A53T)23Mkle/J mice) by autophagy activation through mTOR-dependent and mTOR-independent pathways with rapamycin and trehalose, respectively. Therapy with autophagy inducers in a “postponed” mode (7 days after MPTP intoxication) restored the expression of the dopaminergic neuron marker tyrosine hydroxylase and markedly improved cognitive function in the conditioned passive avoidance response (CPAR; fear memory). The transgenic model also showed an increase in the expression of tyrosine hydroxylase in the nigrostriatal system of the brain. An enhanced therapeutic effect of the combined treatment with the drugs was revealed on the expression of tyrosine hydroxylase, but not in the CPAR test. Thus, activation of both pathways of autophagy regulation in PD models with weakened neuroinflammation can restore the dopaminergic function of neurons and cognitive activity in mice.
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Translated from Byulleten’ Eksperimental’noi Biologii i Meditsiny, Vol. 171, No. 4, pp. 429-435, April, 2021
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Pupyshev, A.B., Tenditnik, M.V., Ovsyukova, M.V. et al. Restoration of Parkinson’s Disease-Like Deficits by Activating Autophagy through mTOR-Dependent and mTOR-Independent Mechanisms in Pharmacological and Transgenic Models of Parkinson’s Disease in Mice. Bull Exp Biol Med 171, 425–430 (2021). https://doi.org/10.1007/s10517-021-05242-z
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DOI: https://doi.org/10.1007/s10517-021-05242-z