Myeloperoxidase Inhibition Decreases the Expression of Collagen and Metallopeptidase in Mare Endometria under In Vitro Conditions.
Abstract: Neutrophils can originate neutrophil extracellular traps (NETs). Myeloperoxidase (MPO) is a peroxidase found in NETs associated to equine endometrosis and can be inhibited by 4-aminobenzoic acid hydrazide (ABAH). Metallopeptidases (MMPs) participate in extracellular matrix stability and fibrosis development. The objectives of this in vitro work were to investigate, in explants of mare's endometrium, (i) the ABAH capacity to inhibit MPO-induced collagen type I (COL1) expression; and (ii) the action of MPO and ABAH on the expression and gelatinolytic activity of MMP-2/-9. Explants retrieved from the endometrium of mares in follicular or mid-luteal phases were treated with MPO, ABAH, or their combination, for 24 or 48 h. The qPCR analysis measured the transcription of , , and . Western blot and zymography were performed to evaluate COL1 protein relative abundance and gelatinolytic activity of MMP-2/-9, respectively. Myeloperoxidase elevated COL1 relative protein abundance at both treatment times in follicular phase ( < 0.05). The capacity of ABAH to inhibit MPO-induced COL1 was detected in follicular phase at 48 h ( < 0.05). The gelatinolytic activity of activated MMP-2 augmented in mid-luteal phase at 24 h after MPO treatment, but it was reduced with MPO+ABAH treatment. The activity of MMP-9 active form augmented in MPO-treated explants. However, this effect was inhibited by ABAH in the follicular phase at 48 h ( < 0.05). By inhibiting the pro-fibrotic effects of MPO, it might be possible to reduce the development of endometrosis. Metallopeptidase-2 might be involved in an acute response to MPO in the mid-luteal phase, while MMP-9 might be implicated in a prolonged exposition to MPO in the follicular phase.
Publication Date: 2021-01-16 PubMed ID: 33467081PubMed Central: PMC7830995DOI: 10.3390/ani11010208Google Scholar: Lookup
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Summary
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This research investigates how inhibiting a certain enzyme found in horse endometrium cells affects collagen production and the activity of proteins involved in maintaining the structure of tissues. The results suggest that this enzyme might play a role in the development of a common equine uterine disease, and that inhibiting it could potentially help reduce the risk of this disease.
Objective of the Research
- The research aimed to understand how the inhibition of Myeloperoxidase (MPO), an enzyme found in the endometrium of mares associated with the disease endometrosis, affects the production of collagen and the activity of proteins known as metallopeptidases (MMPs). MPO can be inhibited by a substance known as 4-aminobenzoic acid hydrazide (ABAH), and the researchers were interested in how this might affect the behavior of cells in the endometrium.
Methodology of the Research
- The researchers collected samples from the endometrium of mares and treated them with MPO, ABAH, or a combination of both. They carried out this process over 24 or 48 hours and then analyzed the samples using quantitative PCR (a method to measure gene expression), Western blot (a technique to identify specific proteins in a sample), and zymography (a technique to detect enzymatic activity).
Findings of the Research
- The researchers found that MPO increased the relative abundance of collagen protein (COL1) in the samples, particularly at both treatment times in the follicular phase, a certain stage of the mares’ reproductive cycle.
- They also found that ABAH was able to inhibit this increase in collagen production caused by MPO after 48 hours in the follicular phase.
- Moreover, the study revealed that the activity of MMPs was increased after treating the samples with MPO. Specifically, they recorded an increase in the gelatinolytic activity (ability to break down gelatin) of MMP-2 and MMP-9, two specific types of metallopeptidases. However, the combination of MPO and ABAH reduced this effect.
- Finally, they found that the activity of the active form of MMP-9 increased when the explants were treated with MPO. This effect was also inhibited by ABAH at 48 hours in the follicular phase.
Implications of the Research
- The findings suggest that MPO contributes to the progression of endometriosis, a common equine uterine disease, by stimulating collagen production and increasing the activity of MMPs. Inhibiting MPO using ABAH could potentially help reduce the risk of this disease.
- The results also indicate that different MMPs may play a role in the body’s response to the presence of MPO at different stages of the mares’ reproductive cycle. This suggests that the MPO-MMP interaction could be a useful area for future research into the prevention and treatment of equine endometriosis.
Cite This Article
APA
Amaral A, Fernandes C, Rebordão MR, Szóstek-Mioduchowska A, Lukasik K, Pinto-Bravo P, Telo da Gama L, Jan Skarzynski D, Ferreira-Dias G.
(2021).
Myeloperoxidase Inhibition Decreases the Expression of Collagen and Metallopeptidase in Mare Endometria under In Vitro Conditions.
Animals (Basel), 11(1), 208.
https://doi.org/10.3390/ani11010208 Publication
Researcher Affiliations
- CIISA-Centro de Investigação Interdisciplinar em Sanidade Animal, Departamento de Morfologia e Função, Faculdade de Medicina Veterinária, Universidade de Lisboa, 1300-477 Lisboa, Portugal.
- CIISA-Centro de Investigação Interdisciplinar em Sanidade Animal, Departamento de Morfologia e Função, Faculdade de Medicina Veterinária, Universidade de Lisboa, 1300-477 Lisboa, Portugal.
- CIISA-Centro de Investigação Interdisciplinar em Sanidade Animal, Departamento de Morfologia e Função, Faculdade de Medicina Veterinária, Universidade de Lisboa, 1300-477 Lisboa, Portugal.
- Polytechnic of Coimbra, Coimbra Agriculture School, Bencanta, 3045-601 Coimbra, Portugal.
- Institute of Animal Reproduction and Food Research, Polish Academy of Science, 10-748 Olsztyn, Poland.
- Institute of Animal Reproduction and Food Research, Polish Academy of Science, 10-748 Olsztyn, Poland.
- Polytechnic of Coimbra, Coimbra Agriculture School, Bencanta, 3045-601 Coimbra, Portugal.
- CIISA-Centro de Investigação Interdisciplinar em Sanidade Animal, Departamento de Morfologia e Função, Faculdade de Medicina Veterinária, Universidade de Lisboa, 1300-477 Lisboa, Portugal.
- Institute of Animal Reproduction and Food Research, Polish Academy of Science, 10-748 Olsztyn, Poland.
- CIISA-Centro de Investigação Interdisciplinar em Sanidade Animal, Departamento de Morfologia e Função, Faculdade de Medicina Veterinária, Universidade de Lisboa, 1300-477 Lisboa, Portugal.
Conflict of Interest Statement
The authors declare no conflict of interest.
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Citations
This article has been cited 5 times.- Amaral A, Cebola N, Szóstek-Mioduchowska A, Rebordão MR, Kordowitzki P, Skarzynski D, Ferreira-Dias G. Inhibition of Myeloperoxidase Pro-Fibrotic Effect by Noscapine in Equine Endometrium.. Int J Mol Sci 2023 Feb 10;24(4).
- Parrilla Hernández S, Franck T, Munaut C, Feyereisen É, Piret J, Farnir F, Reigner F, Barrière P, Deleuze S. Characterization of Myeloperoxidase in the Healthy Equine Endometrium.. Animals (Basel) 2023 Jan 21;13(3).
- Amaral A, Fernandes C, Szóstek-Mioduchowska A, Lukasik K, Rebordão MR, Pinto-Bravo P, Skarzynski DJ, Ferreira-Dias G. The Inhibitory Effect of Noscapine on the In Vitro Cathepsin G-Induced Collagen Expression in Equine Endometrium.. Life (Basel) 2021 Oct 19;11(10).
- Fantini P, Jiménez R, Vilés K, Iborra A, Palhares MS, Catalán J, Prades M, Miró J. Simple Tube Centrifugation Method for Platelet-Rich Plasma (PRP) Preparation in Catalonian Donkeys as a Treatment of Endometritis-Endometrosis.. Animals (Basel) 2021 Oct 9;11(10).
- Amaral A, Fernandes C, Szóstek-Mioduchowska A, Rebordão MR, Skarzynski DJ, Ferreira-Dias G. Noscapine Acts as a Protease Inhibitor of In Vitro Elastase-Induced Collagen Deposition in Equine Endometrium.. Int J Mol Sci 2021 May 19;22(10).
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