Targeted transcript analysis revealed association of suboptimal expression of certain endometrial immunity-related genes with disparate uterine diseases in zebu cows

In: Tropical Animal Health and Production · 2019 · vol. 51(8) , pp. 2493–2503 · doi:10.1007/s11250-019-01958-3 · PMID:31197726 · W2953042401
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Suboptimal expression of certain endometrial immunity-related genes, like IL-1β and TNF-α, was associated with disparate uterine diseases in zebu cows.

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This study examined whether altered endometrial innate immune gene and prostaglandin expression around calving is associated with uterine health in zebu cows, comparing healthy cows (n=11) with cows that developed puerperal metritis (n=7) or clinical endometritis (n=6). Endometrial tissues on the day of calving were analyzed by qRT-PCR for cytokines (IL-1β, IL-6, IL-8, IL-10, TNF-α), prostaglandin synthases (PGFS, PGES), and antimicrobial peptides/calcium-binding proteins, while serum prostaglandin metabolites (PGEM, PGFM) were measured across the peripartum period. Compared with normal cows, uterine-infected cows showed lower endometrial expression of IL-6, IL-8, IL-10, and PGES, and higher expression of IL-1β, TNF-α, PGFS, BDEF-4, BDEF-5, S100A8, and S100A12; serum PGEM was higher in infected cows during peripartum, whereas PGFM was highest in puerperal metritis early after calving. The authors’ caveat is the observational design limited to associations measured at specific timepoints around calving. This paper does not explicitly discuss endometriosis or adenomyosis; it was included in the corpus via a keyword match in the upstream search index.

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Abstract

The onset of uterine infection during postpartum period compromises uterine health, fertility, and productivity of dairy cattle. Endometrial innate immunity plays a key role in eliminating uterine infection and keeping the uterus healthy. Hence, the present study has been designed with the hypothesis that altered endometrial immune response around calving may compromise uterine health during postpartum period. Expression of interleukins (IL-1β, IL-6, IL-8, IL-10, and TNF-α), prostaglandin synthase (PGFS, PGES), and antimicrobial peptides (beta-defensins (BDEF-4, BDEF-5), lingual antimicrobial peptide (LAP), and calcium-binding proteins (S100A8, S100A9, and S100A12) in endometrial tissues on the day of calving was studied using qRT-PCR, and circulating concentrations of prostaglandin E and F metabolites (PGEM and PGFM) during peripartum period (on days - 7, - 4, - 1 (before calving), 0 (on the day of calving), + 1, + 4, and + 7 (post calving)) of normal (healthy) cows (n = 11) that did not develop postpartum uterine infection and cows that developed puerperal metritis (n = 7) and clinical endometritis (n = 6) were studied. Endometrial expression of IL-1β, TNF-α, BDEF-4, BDEF-5, S100A8, S100A12, and PGFS was higher (P < 0.05), and expression of IL-6, IL-8, IL-10, and PGES was lower (P < 0.05) in normal (healthy) cows than puerperal metritic and clinical endometritic cows. The PGFM concentration in serum was high (P < 0.05) on days 0, + 1, and + 4 of calving in puerperal metritic cows followed by normal and clinical endometritic cows. However, PGEM concentration in serum was high (P < 0.05) during peripartum period in uterine-infected (puerperal metritic and clinical endometritic) cows compared with normal cows. From the above findings, it is concluded that higher constitutive expression of IL-1β, TNF-α, PGFS, BDEF-4, BDEF-5, S100A8, and S100A12 genes in the endometrium and lower concentration of PGEM during the period immediate to calving might be beneficial for uterine health of cows.
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Abstract

The onset of uterine infection during postpartum period compromises uterine health, fertility, and productivity of dairy cattle. Endometrial innate immunity plays a key role in eliminating uterine infection and keeping the uterus healthy. Hence, the present study has been designed with the hypothesis that altered endometrial immune response around calving may compromise uterine health during postpartum period. Expression of interleukins (IL-1β, IL-6, IL-8, IL-10, and TNF-α), prostaglandin synthase (PGFS, PGES), and antimicrobial peptides (beta-defensins (BDEF-4, BDEF-5), lingual antimicrobial peptide (LAP), and calcium-binding proteins (S100A8, S100A9, and S100A12) in endometrial tissues on the day of calving was studied using qRT-PCR, and circulating concentrations of prostaglandin E and F metabolites (PGEM and PGFM) during peripartum period (on days − 7, − 4, − 1 (before calving), 0 (on the day of calving), + 1, + 4, and + 7 (post calving)) of normal (healthy) cows (n = 11) that did not develop postpartum uterine infection and cows that developed puerperal metritis (n = 7) and clinical endometritis (n = 6) were studied. Endometrial expression of IL-1β, TNF-α, BDEF-4, BDEF-5, S100A8, S100A12, and PGFS was higher (P < 0.05), and expression of IL-6, IL-8, IL-10, and PGES was lower (P < 0.05) in normal (healthy) cows than puerperal metritic and clinical endometritic cows. The PGFM concentration in serum was high (P < 0.05) on days 0, + 1, and + 4 of calving in puerperal metritic cows followed by normal and clinical endometritic cows. However, PGEM concentration in serum was high (P < 0.05) during peripartum period in uterine-infected (puerperal metritic and clinical endometritic) cows compared with normal cows. From the above findings, it is concluded that higher constitutive expression of IL-1β, TNF-α, PGFS, BDEF-4, BDEF-5, S100A8, and S100A12 genes in the endometrium and lower concentration of PGEM during the period immediate to calving might be beneficial for uterine health of cows. Similar content being viewed by others

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Acknowledgments The authors thank the Indian Council of Agricultural Research, Government of India, the Director, ICAR-National Dairy Research Institute, Karnal, Haryana, and the Director, ICAR-Indian Veterinary Research Institute, Bareilly, U.P., India, for providing necessary facilities and logistics support to conduct this study. Funding This study was funded by the National Dairy Research Institute, India. Author information Authors and Affiliations Corresponding authors Ethics declarations The procedures applied have been approved by the Institute Animal Ethics Committee (1705/Go/ac/13/CPCSEA). Conflict of interest The authors declare that they have no conflict of interest. Additional information Publisher’s note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations. Electronic supplementary material ESM 1 (download DOCX ) (DOCX 10 kb). Rights and permissions About this article Cite this article Baithalu, R.K., Singh, S.K., Kumaresan, A. et al. Targeted transcript analysis revealed association of suboptimal expression of certain endometrial immunity-related genes with disparate uterine diseases in zebu cows. Trop Anim Health Prod 51, 2493–2503 (2019). https://doi.org/10.1007/s11250-019-01958-3 Received: Accepted: Published: Version of record: Issue date: DOI: https://doi.org/10.1007/s11250-019-01958-3

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