Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

editorial

. 2022 Mar 14;15:11786469221083946. doi: 10.1177/11786469221083946

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© The Author(s) 2022

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (https://creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

PMC Copyright notice

Figure 1. — Potential mechanisms of altered tryptophan metabolism induced cerebrovascular and neurodegenerative diseases in Covid-19 aged population.

Abbreviations: BDNF, brain derived neurotrophic factor; IDO-1, indoleamine 2,3-dioxygenases; IFN-γ, interferon-gamma; iNOS, inducible nitric oxide synthase; LTP, long term potentiation; NO, Nitric oxide; TNF-α, tumour necrosis factor-alpha.