Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Low-Field Magnetic Stimulation Alleviates MPTP Intoxicated Alterations on Motor Function and Dopaminergic Neurons in Male Mice

Version 1 : Received: 2 May 2023 / Approved: 4 May 2023 / Online: 4 May 2023 (07:40:20 CEST)

A peer-reviewed article of this Preprint also exists.

Sekar, S.; Zhang, Y.; Miranzadeh Mahabadi, H.; Buettner, B.; Taghibiglou, C. Low-Field Magnetic Stimulation Alleviates MPTP-Induced Alterations in Motor Function and Dopaminergic Neurons in Male Mice. Int. J. Mol. Sci. 2023, 24, 10328. Sekar, S.; Zhang, Y.; Miranzadeh Mahabadi, H.; Buettner, B.; Taghibiglou, C. Low-Field Magnetic Stimulation Alleviates MPTP-Induced Alterations in Motor Function and Dopaminergic Neurons in Male Mice. Int. J. Mol. Sci. 2023, 24, 10328.

Abstract

Recent studies show that repetitive transcranial magnetic stimulation (rTMS) improves cognitive and motor functions in patients with Parkinson’s Disease (PD). Gamma rhythm low-field magnetic stimulation (LFMS) is a new non-invasive rTMS technique that generates diffused and low-intensity magnetic stimulation to deep cortical and subcortical areas. To investigate potential therapeutic effects of LFMS in PD, we subjected an experimental mouse model to LFMS (as early treatment). We examined the LFMS effect on motor functions as well as neuronal and glial activities in 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) induced male C57BL/6J mice. Mice received MPTP injection (30 mg/kg, i.p., once daily for 5 days) followed by LFMS treatment, 20 minutes each day for 7 days. LFMS treatment improved motor functions compared to the sham-treated MPTP mice. Further, LFMS significantly improved tyrosine hydroxylase (TH) and decreased glial fibrillary acidic protein (GFAP) levels, in substantia nigra pars compacta (SNpc) and non- significantly in striatal (ST) regions. LFMS treatment improved neuronal nuclei (NeuN) level in SNpc. Our findings suggest that early LFMS treatment improved the neuron survival and in turn, motor functions in MPTP intoxicated mice brain. Further investigation is required to clearly define the molecular mechanisms by which LFMS improves motor and cognitive function in PD patients.

Keywords

MPTP; LFMS; neurons-glial functions; motor function; Parkinson’s disease

Subject

Medicine and Pharmacology, Neuroscience and Neurology

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