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Song Q, Liu J, Li C, Liu R, Zhang N, Shi H. Prognostic value of miR-223 for pregnancy outcomes in patients with in vitro fertilisation and intracytoplasmic sperm injection. J OBSTET GYNAECOL 2024; 44:2368773. [PMID: 38934480 DOI: 10.1080/01443615.2024.2368773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 06/09/2024] [Indexed: 06/28/2024]
Abstract
BACKGROUND This study aimed to analyse the expression of microRNA-223 (miR-223) in embryo culture medium and its correlation with pregnancy outcomes. METHODS Two hundred and two patients undergoing in vitro fertilisation/intracytoplasmic sperm injection (IVF/ICSI) were divided into clinical pregnancy group (n = 101) and non-pregnant group (n = 101). The baseline data, clinical indicators, and the expression level of miR-223 in the embryo medium were compared between the two groups. Logistic regression analysis was used to analyse the relationship between each index and the pregnancy outcome. Receiver operator characteristic curve was carried out to evaluate the differential ability of miR-223 in pregnancy status. Bioinformatics methods were used to identify the target genes of miR-223 and elucidate their functions. RESULTS Compared with pregnancy group, the non-pregnancy group exhibited a reduction in miR-223 expression (p < 0.001). Multivariate analysis revealed that miR-223 reduction was an independent factor for pregnancy failure (p < 0.05). The ROC curve demonstrated the discriminative capability of miR-223 in distinguishing pregnancy and non-pregnancy. In addition, bioinformatics analysis indicated that the target genes of miR-223 were predominantly located in the endocytic vesicle membrane and were primarily enriched in adenosine monophosphate-activated protein kinase (AMPK) and mammalian target of rapamycin (mTOR) signalling pathways. CONCLUSION In this study, levels of miR-223 in the embryo culture medium predicted pregnancy outcomes in subjects undergoing IVF/ICSI. Low expression of miR-223 was a risk factor for adverse pregnancy outcomes in subjects.
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Affiliation(s)
- Qi Song
- Department of Reproductive Medicine, Maternity & Child Care Center of Qinhuangdao, Qinhuangdao, China
| | - Jiajia Liu
- Department of Reproductive Medicine, Maternity & Child Care Center of Qinhuangdao, Qinhuangdao, China
| | - Chen Li
- Department of Reproductive Medicine, Maternity & Child Care Center of Qinhuangdao, Qinhuangdao, China
| | - Rongrong Liu
- Department of Child Health, Maternity & Child Care Center of Qinhuangdao, Qinhuangdao, China
| | - Nan Zhang
- Department of Reproductive Medicine, Maternity & Child Care Center of Qinhuangdao, Qinhuangdao, China
| | - Hongzhi Shi
- Department of Reproductive Medicine, Maternity & Child Care Center of Qinhuangdao, Qinhuangdao, China
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Silva JA, Castañares M, Mouguelar H, Valenciano JA, Pellegrino MS. Isolation of lactic acid bacteria from the reproductive tract of mares as potentially beneficial strains to prevent equine endometritis. Vet Res Commun 2024; 48:1353-1366. [PMID: 38233700 DOI: 10.1007/s11259-024-10295-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 01/05/2024] [Indexed: 01/19/2024]
Abstract
Endometritis, the inflammation of the endometrium, is the leading cause of subfertility in mares, and therefore responsible for major economic losses in the horse industry worldwide. It is generally treated with uterine lavages combined with ecbolic agents and local or systemic antibiotics. However, since antibiotic overuse has been associated with antimicrobial resistance in mares with persistent endometritis, new prevention and treatment alternatives are needed. One such alternative could be the use of probiotic lactic acid bacteria (LAB) isolated from the host. Thanks to their species specificity, resident microbiota may restore ecological equilibrium within the host, and therefore, help prevent infections and improve physiological functions. In the present study, 257 bacterial strains were isolated from 77 healthy mares, and 88.76% (n = 228) of them were phenotypically classified as LAB. Within this group, 65.79% were able to inhibit at least one strain from each of the genera that most commonly cause equine endometritis (Streptococcus equi subsp. zooepidemicus, Escherichia coli, and Staphylococcus spp.). Five strains (RCE11, RCE20, RCE91, RCE99, and RCE167) were selected on the basis of their beneficial properties: ability to autoaggregate and adhere to equine epithelial cells, high inhibition of and co-aggregation with all the bacteria isolated from clinical cases of endometritis evaluated, and negative co-inhibition between one another. All five were finally identified as Enterococcus spp., namely E. faecium (two strains), E. hirae (two strains), and E. gallinarum (one strain). Further studies will assess their safety and biotechnological potential for the design of a multi-strain probiotic formula to prevent equine endometritis.
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Affiliation(s)
- Jessica Alejandra Silva
- Department of Microbiology and Immunology, Faculty of Cs. Ex. Fco-Qcas y Naturales, National University of Río Cuarto, Route 36 Km 601, X5804ZAB, Río Cuarto, Córdoba, Argentina
- Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Godoy Cruz 2290, C1425FQB, Ciudad Autónoma de Buenos Aires, Buenos Aires, Argentina
| | - Mariana Castañares
- Department of Microbiology and Immunology, Faculty of Cs. Ex. Fco-Qcas y Naturales, National University of Río Cuarto, Route 36 Km 601, X5804ZAB, Río Cuarto, Córdoba, Argentina
| | - Horacio Mouguelar
- Departament of Anatomy, Faculty of Agronomy and Veterinary, National University of Río Cuarto, Route 36 Km 601, X5804ZAB, Río Cuarto, Córdoba, Argentina
| | - Javier Aguilar Valenciano
- Departament of Animal Production, Faculty of Agronomy and Veterinary, National University of Río Cuarto, Route 36 Km 601, X5804ZAB, Río Cuarto, Córdoba, Argentina
| | - Matías Santiago Pellegrino
- Department of Microbiology and Immunology, Faculty of Cs. Ex. Fco-Qcas y Naturales, National University of Río Cuarto, Route 36 Km 601, X5804ZAB, Río Cuarto, Córdoba, Argentina.
- Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Godoy Cruz 2290, C1425FQB, Ciudad Autónoma de Buenos Aires, Buenos Aires, Argentina.
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