Abstract
The last couple of months have witnessed the world in a state of virtual standstill. The SARS-CoV-2 virus has overtaken globe to economic and social lockdown. Many patients with COVID-19 have compromised immunity, especially in an aged population suffering from Parkinson disease (PD). Alteration in dopaminergic neurons or deficiency of dopamine in PD patients is the most common symptoms affecting 1% population above the age of 60 years. The compromised immune system and inflammatory manifestation in PD patients make them an easy target. The most common under trial drugs for COVID-19 are Remdesivir, Favipiravir, Chloroquine and Hydroxychloroquine, Azithromycin along with adjunct drugs like Amantadine with some monoclonal antibodies. Presently, clinically US FDA approved drugs in PD includes Levodopa, catechol-O-methyl transferase (COMT) inhibitors, (Entacapone and Tolcapone), Dopamine agonists (Bromocriptine, Ropinirole, Pramipexole, and Rotigotine), Monoamine oxidase B (MAO-B) inhibitors (Selegiline and Rasagiline), Amantadine and Antimuscarinic drugs. The drugs have established mechanism of action on PD patients with known pharmacodynamics and pharmacokinetic properties along with dose and adverse effects. Conclusion and relevance of this review focus on the drugs that can be tried for the PD patients with SAR CoV-2 infection, in particular, Amantadine approved by all developed countries a common drug possessing both antiviral properties by downregulation of CTSL, lysosomal pathway disturbance and change in pH necessary to uncoat the viral proteins and antiParkinson properties. The significant prognostic adverse effect of SARS-CoV-2 on PD and the present-day treatment options, clinical presentation and various mechanism is warrant need of the hour.
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