The KP dynamics showed decreased levels of KYN, KYN/Trp and anthranilic acid (AA) across the study period (2, 4, and 12 months post-COVID), whereas QUIN and 3-HAA had an increasing trend over time (2 to 8 months) [ 16 ].
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The KP dynamics showed decreased levels of KYN, KYN/Trp and anthranilic acid (AA) across the study period (2, 4, and 12 months post-COVID), whereas QUIN and 3-HAA had an increasing trend over time (2 to 8 months) [ 16 ].