ArticleClinica chimica acta; international journal of clinical chemistry2022
Alteration of the kynurenine pathway is inversely associated with the humoral immune response in patients with SARS-CoV-2.
Article in Clinica chimica acta; international journal of clinical chemistry, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Who cites it
1 citing paper in PubMed, 2 citations in OpenAlex.
- The Biology and Biochemistry of Kynurenic Acid, a Potential Nutraceutical with Multiple Biological Effects.International journal of molecular sciences · 2024Review
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Authors and funding
8 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe scale and the course of antibody production in patients with SARS-CoV-2 is highly variable. Factors involved in the immune regulation during the infection may play a major role in the antibody response. We investigated the relationship between the inflammatory markers of the kynurenine pathway and the concentration of antibodies against SARS-CoV-2 in infected patients 8 - 11 days after admission.
methodsThe study included 72 SARS-CoV-2 - positive inpatients hospitalized between August 2020 and April 2021. The plasma concentrations of tryptophan, kynurenine, anti-SARS-CoV-2 antibodies and the leucocyte count were measured 8 - 11 days after admission. The kynurenine/tryptophan ratio (KYN/TRP ratio) was calculated. Tertiles based on the values for tryptophan, kynurenine, KYN/TRP ratio and the leucocytes were generated.
resultsStatistically significant correlations were observed between anti-SARS-CoV-2 antibodies and tryptophan, kynurenine, KYN/TRP ratio and the leucocytes (p-values < 0.001-0.007). The high kynurenine and KYN/TRP ratio tertiles showed significantly lower antibody titers compared to the low tertiles (p-values 0.017 and < 0.001). The low tryptophan and leucocytes tertiles showed significantly lower antibody titers compared to the high tertiles (p-values 0.001 and 0.008).
conclusionPatients with higher activation levels of the kynurenine pathway tended to develop lower anti-SARS-CoV-2 antibody titers.
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