The in vitro effects of n-3 fatty acids on immune response regulation of bovine ex vivo endometrial explants

Authors

DOI:

https://doi.org/10.11606/issn.1678-4456.bjvras.2023.202442

Keywords:

Cytokines, Fatty acids, Reproduction, Uterus

Abstract

Fatty acids are considered metabolic intermediaries, although new facts indicate they also work as signaling molecules with different roles in the immune response. Based on that, in this study, we investigated the anti-inflammatory effects of n-3 polyunsaturated fatty acids (PUFAs) as eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), and α-linolenic acid (LNA) in ex vivo bovine endometrial explants. For this, two groups were formed: (1) LPS-challenged and (2) control, both to evaluate the accumulation of proinflammatory cytokines as interleukin 1β (IL1B) and interleukin 6 (IL6). To develop the study, bovine female reproductive tracts from non-pregnant Angus heifers without evidence of reproductive diseases were selected. Endometrial explants were processed and treated for 24 h with EPA, DHA, and LNA in five different concentrations (0μM, 50μM, 100 μM, 200μM and 400 μM) and then, challenged with LPS for 24 h. Supernatants were collected to evaluate the concentration of IL1B and IL6 by ELISA. Explants treated with EPA from control groups reduced the concentrations of ILB (200µM) and IL6 (400 µM), and IL6 (50 µM; 100 µM) from the LPS-challenged group. DHA decreased the accumulation of IL1B and IL6 at 200 µM on explants from the LPS-challenged group, and 200 µM reduced IL6 from the control group. In contrast, explants treated with LNA only reduced the accumulation of IL1B to 400μM (from both groups). In conclusion, the EPA acid is the best anti inflammatory option to decrease the concentration of both pro-inflammatory cytokines (IL1B and IL6) from LPS-challenged and control groups in bovine endometrial explants; while LNA evidence to be the last option to promote an anti-inflammatory response. 

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2023-06-06

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The in vitro effects of n-3 fatty acids on immune response regulation of bovine ex vivo endometrial explants. (2023). Brazilian Journal of Veterinary Research and Animal Science, 60, e202442. https://doi.org/10.11606/issn.1678-4456.bjvras.2023.202442