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. 2023 Jan 19:10:20543581221132748.
doi: 10.1177/20543581221132748. eCollection 2023.

Assessment of the Relationship Between Inflammation and Glomerular Filtration Rate

J B Ramirez-Gonzalez  1 , L E Morales-BuenRostro  2 , L Garcia-Covarrubias  3 , R L Pacheco-Domínguez  1 , R Durazo-Arvizu  4 , E N Cuevas-Medina  5 , J Furuzawa-Carballeda  6 , R A Osorio-Juárez  1 , R Correa-Rotter  2 , R Rincón-Pedrero  2 , Josefina Alberú-Gómez  7 , Malaquías López Cervantes  1
Affiliations

Assessment of the Relationship Between Inflammation and Glomerular Filtration Rate

J B Ramirez-Gonzalez et al. Can J Kidney Health Dis. .

Abstract
in English, French

Background: Chronic kidney disease (CKD) is a global health problem. As it progresses to end stages, renal replacement therapy is required but ultimately, the best treatment is transplantation. Decreased renal function has been associated with an inflammatory state associated to primary CKD and in kidney transplant recipients (KTRs).

Objective: To establish how the serum concentrations of some cytokines, such as interleukin (IL)-2, IL-8, IL-22, IL-17α, interferon-gamma, IL-4, and transforming growth factor-β, correlate with various CKD stages.

Methods: One hundred and forty-one KTRs between the ages of 18 and 75 years were included in the study. We also included 112 live kidney donors, 37 CKD PGCKD+3, and 76 GPhealthy. Participants were grouped according to their glomerular filtration rate (GFR) and their circulating cytokine levels, previously quantified by ELISA.

Results: By linear regression analysis, we established the relation of each cytokine with the GFR. Transforming growth factor-β correlated positively with the GFR in the study population, except in healthy individuals. A negative correlation of IL-8 and IL-17α and GFR was found in all cases.

Conclusions: Whether these cytokines (IL-8 and IL-17α) could be used as inflammatory biomarkers indicating CKD progression, regardless of the type of population, remains to be prospectively determined.

Contexte: L’insuffisance rénale chronique (IRC) est un problème de santé mondial. Une thérapie de remplacement rénal est nécessaire au fur et à mesure que la maladie évolue vers les stades terminaux. Mais, en définitive, le meilleur traitement reste la transplantation. La réduction de la fonction rénale a été associée à un état inflammatoire associé à l’IRC primaire; une association observée aussi chez les receveurs d’une greffe de rein.

Objectif: Déterminer la façon dont les concentrations sériques de certaines cytokines, notamment IL-2, IL-8, IL-22, IL-17a, IFN-γ, IL-4 et TGF-β, corrèlent avec divers stades de l’IRC.

Méthodologie: Ont été inclus dans l’étude 141 receveurs d’une greffe rénale âgés de 18 à 75 ans, 112 donneurs vivants de rein, 37 personnes atteintes d’IRC (PGIRC+3) et 76 personnes en bonne santé (PGen santé). Les sujets ont été regroupés en fonction de leur débit de filtration glomérulaire (DFGe) et de leur taux de cytokines en circulation, quantifiés préalablement par ELISA.

Résultats: Une analyse de régression linéaire a servi à établir la relation entre chaque cytokine et le DFGe. Dans la population étudiée, une corrélation positive a été observée entre TGF-β et le DFGe, sauf chez les individus sains. Dans tous les cas, la corrélation s’est avérée négative entre le DFGe et les taux d’IL-8 et d’IL-17a.

Conclusion: Il reste à déterminer prospectivement si ces cytokines (IL-8 et IL-17a) pourraient être utilisées comme biomarqueurs inflammatoires pour indiquer la progression de l’IRC, quelle que soit la population.

Keywords: chronic kidney disease; cytokines; inflammation; kidney transplantation.

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Conflict of interest statement

The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.

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