{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,2]],"date-time":"2026-11-02T21:37:32Z","timestamp":1793655452151,"version":"4.5.1"},"reference-count":60,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2023,3,6]],"date-time":"2023-03-06T00:00:00Z","timestamp":1678060800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Microorganisms"],"abstract":"<jats:p>Chlamydia trachomatis and human papillomavirus (HPV) are the most common pathogens found in sexually transmitted infections (STIs), and both are known to increase the risk of cervical cancer (CC) and infertility. HPV is extremely common worldwide, and scientists use it to distinguish between low-risk and high-risk genotypes. In addition, HPV transmission can occur via simple contact in the genital area. From 50 to 80% of sexually active individuals become infected with both C. trachomatis and HPV viruses during their lifetime, and up to 50% become infected with an HPV oncogenic genotype. The natural history of this coinfection is strongly conditioned by the balance between the host microbiome and immune condition and the infecting agent. Though the infection often regresses, it tends to persist throughout adult life asymptomatically and silently. The partnership between HPV and C. trachomatis is basically due to their similarities: common transmission routes, reciprocal advantages, and the same risk factors. C. trachomatis is a Gram-negative bacteria, similar to HPV, and an intracellular bacterium, which shows a unique biphasic development that helps the latter continue its steady progression into the host throughout the entire life. Indeed, depending on the individual\u2019s immune condition, the C. trachomatis infection tends to migrate toward the upper genital tract and spread to the uterus, and the fallopian tubes open up a pathway to HPV invasion. In addition, most HPV and C. trachomatis infections related to the female genital tract are facilitated by the decay of the first line of defense in the vaginal environment, which is constituted by a healthy vaginal microbiome that is characterized by a net equilibrium of all its components. Thus, the aim of this paper was to highlight the complexity and fragility of the vaginal microenvironment and accentuate the fundamental role of all elements and systems involved, including the Lactobacillus strains (Lactobacillus gasseri, Lactobacillus jensenii, Lactobacillus crispatus) and the immune\u2013endocrine system, in preserving it from oncogenic mutation. Therefore, age, diet, and genetic predisposition together with an unspecific, persistent low-grade inflammatory state were found to be implicated in a high frequency and severity grade of disease, potentially resulting in pre-cancerous and cancerous cervical lesions.<\/jats:p>","DOI":"10.3390\/microorganisms11030662","type":"journal-article","created":{"date-parts":[[2023,3,6]],"date-time":"2023-03-06T05:18:43Z","timestamp":1678079923000},"page":"662","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":41,"title":["Alterations of Vaginal Microbiota and Chlamydia trachomatis as Crucial Co-Causative Factors in Cervical Cancer Genesis Procured by HPV"],"prefix":"10.3390","volume":"11","author":[{"given":"Ciro","family":"Gargiulo Isacco","sequence":"first","affiliation":[{"name":"Department of Interdisciplinary Medicine, School of Medicine, University of Bari \u201cAldo Moro\u201d, 70124 Bari, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mario G.","family":"Balzanelli","sequence":"additional","affiliation":[{"name":"SET-118, Pre-Hospital and Emergency Department, SG Giuseppe Moscati Hospital, 74120 Taranto, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stefania","family":"Garzone","sequence":"additional","affiliation":[{"name":"Department of Interdisciplinary Medicine, School of Medicine, University of Bari \u201cAldo Moro\u201d, 70124 Bari, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1472-5171","authenticated-orcid":false,"given":"Mara","family":"Lorusso","sequence":"additional","affiliation":[{"name":"Department of Interdisciplinary Medicine, School of Medicine, University of Bari \u201cAldo Moro\u201d, 70124 Bari, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3797-5883","authenticated-orcid":false,"given":"Francesco","family":"Inchingolo","sequence":"additional","affiliation":[{"name":"Department of Interdisciplinary Medicine, School of Medicine, University of Bari \u201cAldo Moro\u201d, 70124 Bari, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kieu C. D.","family":"Nguyen","sequence":"additional","affiliation":[{"name":"Department of Interdisciplinary Medicine, School of Medicine, University of Bari \u201cAldo Moro\u201d, 70124 Bari, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5671-8124","authenticated-orcid":false,"given":"Luigi","family":"Santacroce","sequence":"additional","affiliation":[{"name":"Department of Interdisciplinary Medicine, School of Medicine, University of Bari \u201cAldo Moro\u201d, 70124 Bari, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adriana","family":"Mosca","sequence":"additional","affiliation":[{"name":"Department of Interdisciplinary Medicine, School of Medicine, University of Bari \u201cAldo Moro\u201d, 70124 Bari, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Raffaele","family":"Del Prete","sequence":"additional","affiliation":[{"name":"Department of Interdisciplinary Medicine, School of Medicine, University of Bari \u201cAldo Moro\u201d, 70124 Bari, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,3,6]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Zhang, X., Zeng, Q., Cai, W., and Ruan, W. 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