Amr Kassem, Manisha Timalsena, Siffat Ullah, Hussain Ramzan
{"title":"Critical Considerations on the Proposed In Vitro Secnidazole Susceptibility Breakpoint for Trichomonas vaginalis.","authors":"Amr Kassem, Manisha Timalsena, Siffat Ullah, Hussain Ramzan","doi":"10.1097/OLQ.0000000000002253","DOIUrl":null,"url":null,"abstract":"<p><strong>Abstract: </strong>This correspondence calls into question the research by Graves et al. that determines an in vitro minimal lethal concentration (MLC) of 12.5 μg/ml for secnidazole (SEC) as linked to clinical resolution in Trichomonas vaginalis [1]. Recognizing the significance of establishing SEC susceptibility thresholds with increasing metronidazole (MTZ) resistance, we highlight several critical limitations: (1) No pharmacokinetic-pharmacodynamic (PK-PD) validation correlating the MLC with attainable drug concentrations in genital tissue; (2) Omission of isolates from males even with their roles in morbidity/reservoirs; (3) Neglect of the impact of vaginal microbiota on drug-parasite dynamics; (4) Absence of analysis on molecular resistance mechanisms; and (5) Possible selection bias due to the low representation of clinical SEC failures (n = 5) and MTZ-resistant isolates (n = 1).</p>","PeriodicalId":21837,"journal":{"name":"Sexually transmitted diseases","volume":" ","pages":""},"PeriodicalIF":1.7000,"publicationDate":"2025-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Sexually transmitted diseases","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1097/OLQ.0000000000002253","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"INFECTIOUS DISEASES","Score":null,"Total":0}
引用次数: 0
Abstract
Abstract: This correspondence calls into question the research by Graves et al. that determines an in vitro minimal lethal concentration (MLC) of 12.5 μg/ml for secnidazole (SEC) as linked to clinical resolution in Trichomonas vaginalis [1]. Recognizing the significance of establishing SEC susceptibility thresholds with increasing metronidazole (MTZ) resistance, we highlight several critical limitations: (1) No pharmacokinetic-pharmacodynamic (PK-PD) validation correlating the MLC with attainable drug concentrations in genital tissue; (2) Omission of isolates from males even with their roles in morbidity/reservoirs; (3) Neglect of the impact of vaginal microbiota on drug-parasite dynamics; (4) Absence of analysis on molecular resistance mechanisms; and (5) Possible selection bias due to the low representation of clinical SEC failures (n = 5) and MTZ-resistant isolates (n = 1).
期刊介绍:
Sexually Transmitted Diseases, the official journal of the American Sexually Transmitted Diseases Association, publishes peer-reviewed, original articles on clinical, laboratory, immunologic, epidemiologic, behavioral, public health, and historical topics pertaining to sexually transmitted diseases and related fields. Reports from the CDC and NIH provide up-to-the-minute information. A highly respected editorial board is composed of prominent scientists who are leaders in this rapidly changing field. Included in each issue are studies and developments from around the world.