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Pineda-Díaz J, Miranda-Brito C, Juárez-Castelán CJ, Piña-Escobedo A, Lázaro-Pérez NDS, de la Cruz-Munguía A, Ramírez-Sánchez D, Gómez-Meraz Y, Vélez-Ixta JM, García-Mena J. Vaginal Microbiota Patterns Associated with Yeast Infection in Mexican Women, a Pilot Study. BIOTECH 2025; 14:31. [PMID: 40407486 PMCID: PMC12101427 DOI: 10.3390/biotech14020031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2025] [Accepted: 04/23/2025] [Indexed: 05/26/2025] Open
Abstract
Recurrent vulvovaginal candidiasis (RVVC) is a common condition that affects women of reproductive age. The etiology of RVVC remains largely unknown, but it is believed to be associated with changes in vaginal microbiota composition. This study investigates the vaginal microbiota in 57 women with RVVC and 38 healthy controls. Bacterial DNA was analyzed using high-throughput 16S rRNA gene sequencing, and Candida and Saccharomyces species were determined by PCR. RVVC cases had a higher prevalence of Nakaseomyses glabratus (former Candida glabrata) compared to controls. Alpha diversity metrics were similar between groups, but beta diversity analysis revealed significant differences in vaginal microbiota composition. The Firmicutes abundance was altered in RVVC cases, with genus Bifidobacterium and phylum Actinobacteriota being more abundant than in the controls. At the genus level, Lactobacillus dominated controls using antibiotics, while Bifidobacterium was higher in cases with no antibiotic intake. Our study provides evidence that Nakaseomyses glabratus (former Candida glabrata) is a significant pathogen in RVVC, while Candida albicans was more prevalent in healthy women. The vaginal microbiota composition differs significantly between the two groups, with distinct patterns of bacterial abundance and changes in Firmicutes abundance.
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Grants
- CONACYT-163235 Laboratorio de Referencia y Apoyo para la Caracterización de Genomas, Transcriptomas y Microbiomas en la Unidad Zacatenco del Cinvestav Secretaría de Ciencia, Humanidades, Tecnología e Innovación (SECIHTI)
- CONACYT FORDECYT-PRONACES/6669/2020_Programa Presupuestario F003-Ciencia de Frontera 2019 "Estudio de la vía Tracto-Digestivo-Materno Leche-Materna Trac-to-digestivo-neonato, una aproximación ómica" Secretaría de Ciencia, Humanidades, Tecnología e Innovación (SECIHTI)
- SECTEI/249/2019-CM-SECTEI/109/2020-CM-SECTEI/124/2021, Convocatoria 2019, Proyectos Científicos, Tecnológicos y/o de Innovación para la atención a problemas específicos de la Ciudad de México relacionados con la investigación y atención de enfermedades cr Secretaría de Educación, Ciencia, Tecnología e Innovación (SECTEI)
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Affiliation(s)
- Janet Pineda-Díaz
- Departamento de Genética y Biología Molecular, Cinvestav, Av. Instituto Politécnico Nacional 2508, Mexico City 07360, Mexico; (J.P.-D.); (C.M.-B.); (C.J.J.-C.); (A.P.-E.); (N.d.S.L.-P.); (A.d.l.C.-M.); (D.R.-S.); (J.M.V.-I.)
| | - Carolina Miranda-Brito
- Departamento de Genética y Biología Molecular, Cinvestav, Av. Instituto Politécnico Nacional 2508, Mexico City 07360, Mexico; (J.P.-D.); (C.M.-B.); (C.J.J.-C.); (A.P.-E.); (N.d.S.L.-P.); (A.d.l.C.-M.); (D.R.-S.); (J.M.V.-I.)
| | - Carmen Josefina Juárez-Castelán
- Departamento de Genética y Biología Molecular, Cinvestav, Av. Instituto Politécnico Nacional 2508, Mexico City 07360, Mexico; (J.P.-D.); (C.M.-B.); (C.J.J.-C.); (A.P.-E.); (N.d.S.L.-P.); (A.d.l.C.-M.); (D.R.-S.); (J.M.V.-I.)
| | - Alberto Piña-Escobedo
- Departamento de Genética y Biología Molecular, Cinvestav, Av. Instituto Politécnico Nacional 2508, Mexico City 07360, Mexico; (J.P.-D.); (C.M.-B.); (C.J.J.-C.); (A.P.-E.); (N.d.S.L.-P.); (A.d.l.C.-M.); (D.R.-S.); (J.M.V.-I.)
| | - Noemí del Socorro Lázaro-Pérez
- Departamento de Genética y Biología Molecular, Cinvestav, Av. Instituto Politécnico Nacional 2508, Mexico City 07360, Mexico; (J.P.-D.); (C.M.-B.); (C.J.J.-C.); (A.P.-E.); (N.d.S.L.-P.); (A.d.l.C.-M.); (D.R.-S.); (J.M.V.-I.)
| | - Alejandra de la Cruz-Munguía
- Departamento de Genética y Biología Molecular, Cinvestav, Av. Instituto Politécnico Nacional 2508, Mexico City 07360, Mexico; (J.P.-D.); (C.M.-B.); (C.J.J.-C.); (A.P.-E.); (N.d.S.L.-P.); (A.d.l.C.-M.); (D.R.-S.); (J.M.V.-I.)
| | - Daniela Ramírez-Sánchez
- Departamento de Genética y Biología Molecular, Cinvestav, Av. Instituto Politécnico Nacional 2508, Mexico City 07360, Mexico; (J.P.-D.); (C.M.-B.); (C.J.J.-C.); (A.P.-E.); (N.d.S.L.-P.); (A.d.l.C.-M.); (D.R.-S.); (J.M.V.-I.)
| | - Yuliana Gómez-Meraz
- Ginecología y Obstetricia, Centro Médico ABC Santa Fe, Av. Carlos Graef Fernández 154, Mexico City 05300, Mexico;
| | - Juan Manuel Vélez-Ixta
- Departamento de Genética y Biología Molecular, Cinvestav, Av. Instituto Politécnico Nacional 2508, Mexico City 07360, Mexico; (J.P.-D.); (C.M.-B.); (C.J.J.-C.); (A.P.-E.); (N.d.S.L.-P.); (A.d.l.C.-M.); (D.R.-S.); (J.M.V.-I.)
| | - Jaime García-Mena
- Departamento de Genética y Biología Molecular, Cinvestav, Av. Instituto Politécnico Nacional 2508, Mexico City 07360, Mexico; (J.P.-D.); (C.M.-B.); (C.J.J.-C.); (A.P.-E.); (N.d.S.L.-P.); (A.d.l.C.-M.); (D.R.-S.); (J.M.V.-I.)
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Zhang D, Dong R, Jiang T, Ren S, Yue X, Zhai M, Jiang S, He B, Tang R, Deng Y, Lyu W, Zhao B, Tao F, Yang Y, Yin Z, Yu Z, Ji D, Liang C. The relationships of metals exposure and disturbance of the vaginal microbiota with the risk of PROM: Results from a birth cohort study. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2025; 289:117420. [PMID: 39705865 DOI: 10.1016/j.ecoenv.2024.117420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2024] [Revised: 11/18/2024] [Accepted: 11/25/2024] [Indexed: 12/23/2024]
Abstract
The vaginal microbiota is proposed to be associated with reproductive health. Exposure to metals during pregnancy is a risk factor for premature rupture of membranes (PROM). PROM can lead to serious maternal complications, thus, identifying the cause and therapeutic targets for it is crucial. However, the role of vaginal microbiota in the association between metals exposure and the risk of PROM are not clear. Based on a prospective birth cohort study including 668 pregnant women, maternal blood levels of 15 metals in the first trimester (n=668) and microbiota of vaginal secretions in the third trimester (n=244) were assessed. The metals that significantly associated with the risk of PROM were screened out via four statistical models, the top three were barium (Ba), chromium (Cr) and thallium (Tl) according to their weight indices. The results from the BKMR model showed a positive association of the mixture (Ba, Cr and Tl) with the risk of PROM. PROM and non-PROM were characterised by different beta diversities, moreover, the relative abundances of Bifidobacterium, Corynebacterium and Collinsella were statistically and negatively related to the risk of PROM [the adjusted odds ratios (ORs) and 95 % confidence intervals (CIs) were 0.06 (0.00, 0.82), 0.32 (0.14, 0.74) and 0.50 (0.30, 0.84), respectively]. On the other hand, women with different levels of Ba exposure were also characterised by different beta diversities (p value = 0.047); and blood Ba levels were also negatively associated with the relative abundances of Collinsella; additionally, Cr levels were positively associated with alpha diversity indices [Shannon index: β (95 % CI) = 0.25 (0.01, 0.50); Simpson index: β (95 % CI) = 0.08 (0.00, 0.17), respectively]. The results from mediation analysis showed the proportion of the relationship between Ba exposure and PROM risk mediated by the relative abundance of Collinsella was 26.4 %. Further verification analysis exploring the potential cause of the above phenomenon indicated that the neutrophil count, one of blood inflammation indicators for PROM, was higher in women with the absence of Collinsella (p value = 0.039), moreover, the cumulative hazard of PROM for women with the presence of Collinsella was also significantly lower than that of those without Collinsella (p value = 0.007). Collectively, the changes in the diversity and composition of the bacterial community, especially the reduction in Collinsella abundance caused by metal exposure, may be related to the occurrence of PROM, which provides a new microbiota-based perspective for intervention in metal exposure-related PROM. Confirming these relationships and determining the possible processes at play will require more investigation.
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Affiliation(s)
- Dongyang Zhang
- School of Public Health, Anhui Medical University, No 81 Meishan Road, Hefei, Anhui 230032, China
| | - Rui Dong
- School of Public Health, Anhui Medical University, No 81 Meishan Road, Hefei, Anhui 230032, China
| | - Tingting Jiang
- School of Public Health, Anhui Medical University, No 81 Meishan Road, Hefei, Anhui 230032, China
| | - Shiwei Ren
- School of Public Health, Anhui Medical University, No 81 Meishan Road, Hefei, Anhui 230032, China
| | - Xinyu Yue
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, No 218 Jixi Road, Hefei, Anhui 230022, China
| | - Muxin Zhai
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, No 218 Jixi Road, Hefei, Anhui 230022, China
| | - Siyu Jiang
- The Second Clinical School of Anhui Medical University, No 81 Meishan Road, Hefei, Anhui 230032, China
| | - Bingxia He
- School of Public Health, Anhui Medical University, No 81 Meishan Road, Hefei, Anhui 230032, China
| | - Ran Tang
- School of Public Health, Anhui Medical University, No 81 Meishan Road, Hefei, Anhui 230032, China
| | - Yujie Deng
- School of Public Health, Anhui Medical University, No 81 Meishan Road, Hefei, Anhui 230032, China
| | - Wenjie Lyu
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, No 218 Jixi Road, Hefei, Anhui 230022, China
| | - Baojing Zhao
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, No 218 Jixi Road, Hefei, Anhui 230022, China
| | - Fangbiao Tao
- School of Public Health, Anhui Medical University, No 81 Meishan Road, Hefei, Anhui 230032, China; Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of the People's Republic of China, No 81 Meishan Road, Hefei, Anhui 230032, China; NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract (Anhui Medical University), No 81 Meishan Road, Hefei, Anhui 230032, China; Anhui Provincial Institute of Translational Medicine, No 81 Meishan Road, Hefei, Anhui 230032, China
| | - Yuanyuan Yang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, No 218 Jixi Road, Hefei, Anhui 230022, China.
| | - Zongzhi Yin
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, No 218 Jixi Road, Hefei, Anhui 230022, China; Center for Big Data and Population Health of IHM, The First Affiliated Hospital of Anhui Medical University, Hefei, China.
| | - Zhen Yu
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, No 218 Jixi Road, Hefei, Anhui 230022, China; NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract (Anhui Medical University), No 81 Meishan Road, Hefei, Anhui 230032, China.
| | - Dongmei Ji
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, No 218 Jixi Road, Hefei, Anhui 230022, China; Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of the People's Republic of China, No 81 Meishan Road, Hefei, Anhui 230032, China; NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract (Anhui Medical University), No 81 Meishan Road, Hefei, Anhui 230032, China; Anhui Provincial Institute of Translational Medicine, No 81 Meishan Road, Hefei, Anhui 230032, China; Center for Big Data and Population Health of IHM, The First Affiliated Hospital of Anhui Medical University, Hefei, China; Anhui Province Key Laboratory of Reproductive Health and Genetics, No 81 Meishan Road, Hefei, Anhui 230032, China; Anhui Provincial Engineering Research Center of Biopreservation and Artificial Organs, No 81 Meishan Road, Hefei, Anhui 230032, China.
| | - Chunmei Liang
- School of Public Health, Anhui Medical University, No 81 Meishan Road, Hefei, Anhui 230032, China; Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, No 218 Jixi Road, Hefei, Anhui 230022, China; Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of the People's Republic of China, No 81 Meishan Road, Hefei, Anhui 230032, China; NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract (Anhui Medical University), No 81 Meishan Road, Hefei, Anhui 230032, China; Anhui Provincial Institute of Translational Medicine, No 81 Meishan Road, Hefei, Anhui 230032, China; Anhui Province Key Laboratory of Reproductive Health and Genetics, No 81 Meishan Road, Hefei, Anhui 230032, China; Anhui Provincial Engineering Research Center of Biopreservation and Artificial Organs, No 81 Meishan Road, Hefei, Anhui 230032, China.
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Yao H, Chen J, Wang Y, Li Y, Jiang Q. Assessing causal relationships between gut microbiota and abortion: evidence from two sample Mendelian randomization analysis. Front Endocrinol (Lausanne) 2024; 15:1415730. [PMID: 39050566 PMCID: PMC11266152 DOI: 10.3389/fendo.2024.1415730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Accepted: 06/26/2024] [Indexed: 07/27/2024] Open
Abstract
Background While some studies have suggested a link between gut microbiota (GM) and abortion, the causal relationship remains unclear. Methods To explore the causal relationship between GM and abortion, including spontaneous abortion (SA) and habitual abortion (HA), we performed a two-sample Mendelian randomization (MR) analysis. We used summary statistics data from MiBioGen and FinnGen for genome-wide association studies (GWAS), with GM data as the exposure variable and abortion data as the outcome variable. Results In the absence of heterogeneity and horizontal pleiotropy, the inverse-variance weighted (IVW) method identified five genetically predicted GM genera linked to the risk of abortions. Lactococcus was negatively correlated with the risk of SA, whereas the Eubacterium fissicatena group was positively correlated with the risk of SA. Genetic predictions of Coprococcus3 and Odoribacter were linked to a reduced risk of HA, while the Eubacterium ruminantium group was associated with an increased risk of HA. Conclusion Our study suggests a genetic causal relationship between specific GM and two types of abortions, improving our understanding of the pathological relationship between GM and abortion.
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Affiliation(s)
- Hang Yao
- School of Traditional Chinese Medicine, Binzhou Medical University, Yantai, China
| | - Jiahao Chen
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Yu Wang
- Graduate School of Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Yuxin Li
- Graduate School of Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Qingling Jiang
- School of Traditional Chinese Medicine, Binzhou Medical University, Yantai, China
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Malloy E, Kates AE, Dixon J, Riley C, Safdar N, Hanson L. Vaginal and Rectal microbiome changes following administration of a multi-species antenatal probiotic: A randomized control trial. GUT MICROBES REPORTS 2024; 1:1-10. [PMID: 38708373 PMCID: PMC11065196 DOI: 10.1080/29933935.2024.2334311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 03/14/2024] [Accepted: 03/14/2024] [Indexed: 05/07/2024]
Abstract
The gut and vaginal microbiome undergo changes during pregnancy which may be protective or harmful to the birthing person. Probiotics have been found to cause protective changes to the gut and vaginal microbiomes, with the potential to improve perinatal outcomes. This randomized control trial compares the vaginal and rectal microbiomes before and after an antenatal probiotic or placebo intervention, with a diverse group of pregnant people and a special focus on racial disparities. The vaginal and rectal microbiomes reveal non-significant increased Lactobacillus in the probiotics group, with a greater increase in participants who identified as Black. Potential implications and future study are discussed.
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Affiliation(s)
- Emily Malloy
- Aurora UW Medical Group Midwifery & Wellness, Advocate Aurora Healthcare Milwaukee, USA
- College of Nursing, Marquette University, Milwaukee, USA
| | - Ashley E. Kates
- Department of Medicine, Division of Infectious Disease, University of Wisconsin-Madison, Madison, USA
- William S. Middleton Memorial Veterans Hospital, Madison, USA
| | - Jonah Dixon
- Department of Medicine, Division of Infectious Disease, University of Wisconsin-Madison, Madison, USA
- William S. Middleton Memorial Veterans Hospital, Madison, USA
| | - Colleen Riley
- Department of Medicine, Division of Infectious Disease, University of Wisconsin-Madison, Madison, USA
- William S. Middleton Memorial Veterans Hospital, Madison, USA
| | - Nasia Safdar
- Department of Medicine, Division of Infectious Disease, University of Wisconsin-Madison, Madison, USA
- William S. Middleton Memorial Veterans Hospital, Madison, USA
| | - Lisa Hanson
- College of Nursing, Marquette University, Milwaukee, USA
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Díaz-Rodríguez K, Pacheco-Aranibar J, Manrique-Sam C, Ita-Balta Y, del Carpio-Toia AM, López-Casaperalta P, Chocano-Rosas T, Fernandez-F F, Villanueva-Salas J, Bernabe-Ortiz JC. Intestinal Microbiota in Children with Anemia in Southern Peru through Next-Generation Sequencing Technology. CHILDREN (BASEL, SWITZERLAND) 2022; 9:1615. [PMID: 36360343 PMCID: PMC9688611 DOI: 10.3390/children9111615] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 09/16/2022] [Accepted: 09/22/2022] [Indexed: 08/30/2023]
Abstract
Knowledge of the sequencing of the 16S rRNA gene constitutes a true revolution in understanding the composition of the intestinal microbiota and its implication in health states. This study details microbial composition through next-generation sequencing (NGS) technology in children with anemia. Anemia is the most frequent hematological disorder that affects human beings. In Peru, it is one of the conditions that presents the most significant concern due to the adverse effects that cause it, such as delayed growth and psychomotor development, in addition to a deficiency in cognitive development.
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Affiliation(s)
- Karla Díaz-Rodríguez
- Post-Graduate School, Universidad Católica de Santa María, Urb. San José s/n, Umacollo, Arequipa 04013, Peru
| | - Jani Pacheco-Aranibar
- Post-Graduate School, Universidad Católica de Santa María, Urb. San José s/n, Umacollo, Arequipa 04013, Peru
- Deparment of Biology, Universidad Nacional de San Agustín, Santa Catalina Nro. 117, Arequipa 04001, Peru
- Department of Molecular Biology, Instituto de Biotecnología del ADN Uchumayo, Arequipa 04401, Peru
| | - Cecilia Manrique-Sam
- Post-Graduate School, Universidad Católica de Santa María, Urb. San José s/n, Umacollo, Arequipa 04013, Peru
| | - Yuma Ita-Balta
- Post-Graduate School, Universidad Católica de Santa María, Urb. San José s/n, Umacollo, Arequipa 04013, Peru
| | - Agueda Muñoz del Carpio-Toia
- Post-Graduate School, Universidad Católica de Santa María, Urb. San José s/n, Umacollo, Arequipa 04013, Peru
- Vicerrectorado de Investigación, Universidad Católica de Santa María, Urb. San José s/n, Umacollo, Arequipa 04013, Peru
| | - Patricia López-Casaperalta
- Vicerrectorado de Investigación, Universidad Católica de Santa María, Urb. San José s/n, Umacollo, Arequipa 04013, Peru
| | - Teresa Chocano-Rosas
- Post-Graduate School, Universidad Católica de Santa María, Urb. San José s/n, Umacollo, Arequipa 04013, Peru
| | - Fernando Fernandez-F
- Post-Graduate School, Universidad Católica de Santa María, Urb. San José s/n, Umacollo, Arequipa 04013, Peru
| | - Jose Villanueva-Salas
- Post-Graduate School, Universidad Católica de Santa María, Urb. San José s/n, Umacollo, Arequipa 04013, Peru
| | - Julio Cesar Bernabe-Ortiz
- Post-Graduate School, Universidad Católica de Santa María, Urb. San José s/n, Umacollo, Arequipa 04013, Peru
- Deparment of Biology, Universidad Nacional de San Agustín, Santa Catalina Nro. 117, Arequipa 04001, Peru
- Department of Molecular Biology, Instituto de Biotecnología del ADN Uchumayo, Arequipa 04401, Peru
- Vicerrectorado de Investigación, Universidad Católica de Santa María, Urb. San José s/n, Umacollo, Arequipa 04013, Peru
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