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1.
J Infect Dis ; 229(4): 1158-1165, 2024 Apr 12.
Artículo en Inglés | MEDLINE | ID: mdl-38099506

RESUMEN

BACKGROUND: Confounding introduced by individuals' sexual risk behavior is potentially a significant source of bias in HIV-1 prevention intervention studies. To more completely account for sexual behaviors when assessing the efficacy of the monthly dapivirine ring, a new longer-acting HIV-1 prevention option for women, we estimated per-sex-act risk reduction associated with product use. METHODS: We conducted a secondary analysis of data from MTN-020/ASPIRE, a phase 3, randomized, placebo-controlled efficacy trial of the dapivirine ring that recruited HIV-uninfected, African women aged 18-45 years. With cumulative sex acts as the time scale, we used multivariable Cox regression with inverse probability of censoring weights to estimate HIV-1 risk reduction associated with a rate of dapivirine release indicative of consistent product use. RESULTS: Women in the dapivirine ring group (n = 1187) had an estimated incidence rate of 2.3 (95% confidence interval [CI], 1.8-3.1) HIV-1 acquisition events per 10 000 sex acts versus 3.6 (95% CI, 2.9-4.4) per 10 000 acts in the placebo group (n = 1187). Dapivirine release indicative of consistent ring use was associated with a 63% (95% CI, 33%-80%) per-sex-act HIV-1 risk reduction. CONCLUSIONS: These results support the efficacy of the dapivirine vaginal ring for HIV-1 prevention and help to inform decision-making for women, providers, and policymakers regarding product use. CLINICAL TRIALS REGISTRATION: NCT01617096.


Asunto(s)
Fármacos Anti-VIH , Dispositivos Anticonceptivos Femeninos , Infecciones por VIH , Seropositividad para VIH , VIH-1 , Pirimidinas , Femenino , Humanos , Fármacos Anti-VIH/uso terapéutico , Infecciones por VIH/prevención & control , Infecciones por VIH/epidemiología , Conducta de Reducción del Riesgo , Adolescente , Adulto Joven , Adulto , Persona de Mediana Edad
2.
J Infect Dis ; 2024 Apr 24.
Artículo en Inglés | MEDLINE | ID: mdl-38655842

RESUMEN

BACKGROUND: On-demand topical products could be an important tool for HIV prevention. We evaluated the safety, pharmacokinetics, and ex vivo pharmacodynamics of a tenofovir alafenamide/elvitegravir (TAF/EVG; 16 mg/20 mg) insert administered rectally. METHODS: MTN-039 was a Phase 1, open-label, single-arm, 2-dose study. Blood, rectal fluid (RF), and rectal tissue (RT) were collected over 72 hours (hr) following rectal administration of one and two TAF/EVG inserts for each participant. ClinicalTrials.gov Identifier: NCT04047420. RESULTS: TAF/EVG inserts were safe and well tolerated. EVG and tenofovir (TFV) were detected in blood plasma at low concentrations: median peak concentrations after 2 inserts were EVG 2.4 ng/mL and TFV 4.4 ng/mL. RT EVG peaked at 2-hr (median 2 inserts= 9 ng/mg) but declined to BLQ in the majority of samples at 24-hr, whereas TFV-DP remained high >2,000 fmol/million cells for 72-hr with 2 inserts. Compared to baseline, median cumulative log10 HIV p24 antigen of ex vivo rectal tissue HIV infection was reduced at each timepoint for both 1 and 2 inserts (p<0.065 and p<0.039, respectively). DISCUSSION: Rectal administration of TAF/EVG inserts achieved high rectal tissue concentrations of EVG and TFV-DP with low systemic drug exposure and demonstrable ex vivo inhibition of HIV infection for 72 hours.

3.
Lancet ; 400 Suppl 1: S25, 2022 11.
Artículo en Inglés | MEDLINE | ID: mdl-36929968

RESUMEN

BACKGROUND: Response to the COVID-19 pandemic resulted in the temporary disruption of routine services in the UK National Health Service, including cancer screening. Following the reintroduction of services, we explored the impact on inequalities in uptake of the Bowel Screening Wales (BSW) programme to identify groups who might benefit from tailored intervention. METHODS: BSW records were linked to electronic health record and administrative data within the Secured Anonymised Information Linkage (SAIL) Databank Trusted Research Environment. We examined uptake in the first 3 months (from August to October, 2020) of invitations following the reintroduction of the BSW programme compared with the same period in the preceding 3 years. We analysed inequalities in uptake by sex, age group, income deprivation quintile, urban and rural location, ethnic group, and uptake between different periods using logistic regression models. FINDINGS: Overall uptake remained above the 60% Welsh standard during the COVID-19 pandemic period of 2020-21 but declined compared with the pre-pandemic period of 2019-20 (60·4% vs 62·7%; p<0·001). During the COVID-19 pandemic period of 2020-21, uptake declined for most demographic groups, except for older individuals (70-74 years) and those in the most deprived quintile. Variation by sex, age, income deprivation, and ethnic groups was observed in all periods studied. Among low-uptake groups, including males, younger individuals (60-64 years), those living in most deprived areas, and ethnic minorities, uptake remains below the 60% Welsh standard. INTERPRETATION: Despite the disruption, uptake remained above the Welsh standard and inequalities did not worsen after the programme resumed activities. However, variations associated with sex, age, deprivation, and ethnicity remain. These findings need to be considered in targeting strategies to improve uptake and informed choice in colorectal cancer screening such as co-producing information products with low-uptake groups and upscaling the use of GP-endorsed invitations and reminder letters for bowel screening. FUNDING: Health Data Research UK, UK Medical Research Council, Administrative Data Research UK, and Health and Care Research Wales.


Asunto(s)
COVID-19 , Pandemias , Masculino , Humanos , Gales/epidemiología , Medicina Estatal , Estudios Retrospectivos , Tamizaje Masivo/métodos , COVID-19/epidemiología
4.
Int J Syst Evol Microbiol ; 73(10)2023 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-37787404

RESUMEN

Four obligately anaerobic Gram-positive bacteria representing one novel genus and two novel species were isolated from the female genital tract. Both novel species, designated UPII 610-JT and KA00274T, and an additional isolate of each species were characterized utilizing biochemical, genotypic and phylogenetic analyses. All strains were non-motile and non-spore forming, asaccharolytic, non-cellulolytic and indole-negative coccobacilli. Fatty acid methyl ester analysis for UPII 610-JT and KA00274T and additional isolates revealed C16 : 0, C18 : 0, C18:1ω9c and C18:2ω6,9c to be the major fatty acids for both species. UPII 610-JT had a 16S rRNA gene sequence similarity of 99.4 % to an uncultured clone sequence (AY724740) designated as Bacterial Vaginosis Associated Bacterium 2 (BVAB2). KA00274T had a 16S rRNA gene sequence similarity of 96.5 % to UPII 610-JT. Whole genomic DNA mol% G+C content was 42.2 and 39.3 % for UPII 610-JT and KA00274T, respectively. Phylogenetic analyses indicate these isolates represent a novel genus and two novel species within the Oscillospiraceae family. We propose the names Amygdalobacter indicium gen. nov., sp. nov., for UPII 610-JT representing the type strain of this species (=DSM 112989T, =ATCC TSD-274T) and Amygdalobacter nucleatus gen. nov., sp. nov., for KA00274T representing the type strain of this species (=DSM 112988T, =ATCC TSD-275T).


Asunto(s)
Ácidos Grasos , Lactobacillales , Humanos , Femenino , Ácidos Grasos/química , Filogenia , ARN Ribosómico 16S/genética , ADN Bacteriano/genética , Composición de Base , Técnicas de Tipificación Bacteriana , Análisis de Secuencia de ADN , Genitales Femeninos , Lactobacillales/genética
5.
BMC Public Health ; 23(1): 546, 2023 03 22.
Artículo en Inglés | MEDLINE | ID: mdl-36949447

RESUMEN

BACKGROUND: Response to the early stages of the COVID-19 pandemic resulted in the temporary disruption of cancer screening in the UK, and strong public messaging to stay safe and to protect NHS capacity. Following reintroduction in services, we explored the impact on inequalities in uptake of the Bowel Screening Wales (BSW) programme to identify groups who may benefit from tailored interventions. METHODS: Records within the BSW were linked to electronic health records (EHR) and administrative data within the Secured Anonymised Information Linkage (SAIL) Databank. Ethnic group was obtained from a linked data method available within SAIL. We examined uptake for the first 3 months of invitations (August to October) following the reintroduction of BSW programme in 2020, compared to the same period in the preceding 3 years. Uptake was measured across a 6 month follow-up period. Logistic models were conducted to analyse variations in uptake by sex, age group, income deprivation quintile, urban/rural location, ethnic group, and clinically extremely vulnerable (CEV) status in each period; and to compare uptake within sociodemographic groups between different periods. RESULTS: Uptake during August to October 2020 (period 2020/21; 60.4%) declined compared to the same period in 2019/20 (62.7%) but remained above the 60% Welsh standard. Variation by sex, age, income deprivation, and ethnic groups was observed in all periods studied. Compared to the pre-pandemic period in 2019/20, uptake declined for most demographic groups, except for older individuals (70-74 years) and those in the most income deprived group. Uptake continues to be lower in males, younger individuals, people living in the most income deprived areas and those of Asian and unknown ethnic backgrounds. CONCLUSION: Our findings are encouraging with overall uptake achieving the 60% Welsh standard during the first three months after the programme restarted in 2020 despite the disruption. Inequalities did not worsen after the programme resumed activities but variations in CRC screening in Wales associated with sex, age, deprivation and ethnic group remain. This needs to be considered in targeting strategies to improve uptake and informed choice in CRC screening to avoid exacerbating disparities in CRC outcomes as screening services recover from the pandemic.


Asunto(s)
COVID-19 , Neoplasias Colorrectales , Masculino , Humanos , Pandemias/prevención & control , Gales/epidemiología , Detección Precoz del Cáncer/métodos , COVID-19/diagnóstico , COVID-19/epidemiología , Neoplasias Colorrectales/diagnóstico , Neoplasias Colorrectales/epidemiología , Factores Socioeconómicos
6.
J Infect Dis ; 226(6): 1069-1074, 2022 09 21.
Artículo en Inglés | MEDLINE | ID: mdl-35763413

RESUMEN

BACKGROUND: Highly efficacious oral pre-exposure prophylaxis (PrEP) is the global standard for human immunodeficiency virus (HIV)-1 prevention, including in clinical trials of novel PrEP agents using active-comparator designs. The analysis assessed whether incident sexually transmitted infections (STIs) can serve as a surrogate indicator of HIV-1 incidence that might occur in the absence of PrEP. METHODS: We analyzed data from 3256 women randomized to placebo groups of oral and vaginal PrEP trials (MTN-003/VOICE and MTN-020/ASPIRE). Regression modeling assessed the correlation between incident individual STIs (Neisseria gonorrhoeae, Chlamydia trachomatis, and Trichomonas vaginalis, each considered separately) and incident HIV-1. RESULTS: Across 18 sites in 4 countries (Malawi, South Africa, Uganda, Zimbabwe), STI and HIV-1 incidences were high: HIV-1 4.9, N gonorrhoeae 5.3, C trachomatis 14.5, and T vaginalis 7.1 per 100 person-years. There was limited correlation between HIV-1 incidence and incidence of individual STIs: N gonorrhoeae (r = 0.02, P = .871), C trachomatis (r = 0.49, P = <.001), and T vaginalis (r = 0.10, P = .481). The modest association with C trachomatis was driven by country-level differences in both C trachomatis and HIV-1, with no statistically significant association within countries. CONCLUSIONS: Sexually transmitted infection incidence did not reliably predict HIV-1 incidence at the population level among at-risk African women participating in 2 large PrEP trials.


Asunto(s)
Infecciones por Chlamydia , Infecciones por VIH , VIH-1 , Profilaxis Pre-Exposición , Enfermedades de Transmisión Sexual , Infecciones por Chlamydia/epidemiología , Infecciones por Chlamydia/prevención & control , Chlamydia trachomatis , Femenino , Infecciones por VIH/epidemiología , Infecciones por VIH/prevención & control , Humanos , Incidencia , Neisseria gonorrhoeae , Prevalencia , Enfermedades de Transmisión Sexual/epidemiología , Enfermedades de Transmisión Sexual/prevención & control
7.
J Infect Dis ; 225(12): 2208-2218, 2022 06 15.
Artículo en Inglés | MEDLINE | ID: mdl-34865071

RESUMEN

BACKGROUND: A 25-mg dapivirine vaginal ring has been demonstrated to reduce risk of human immunodeficiency virus (HIV) acquisition in nonpregnant adult women. In this secondary analysis of studies conducted in US adolescent, lactating, and postmenopausal females, vaginal microbiota was assessed prior to and after ring use, and between dapivirine and placebo ring users. METHODS: Vaginal fluid swabs were collected before and after product use for the evaluation of microbiota using Nugent criteria, quantitative culture, and quantitative polymerase chain reaction. RESULTS: Vaginal ring use did not impact bacterial vaginosis prevalence among the 3 populations and was associated with minimal shifts in microbiota. Adolescents in both arms demonstrated an increased prevalence of Lactobacillus crispatus and a decrease in quantity of Megasphaera lornae. Postmenopausal active and placebo ring users demonstrated an increased prevalence of lactobacilli and non-albicans yeast, while dapivirine ring users demonstrated an increased prevalence of Candida albicans and increased quantity of group B Streptococcus and non-albicans yeasts. Prevotella species were increased in lactating women, whereas Prevotella timonensis increased in prevalence and concentration among adolescent and postmenopausal females and Prevotella bivia increased in prevalence among adolescent dapivirine ring users. CONCLUSIONS: Dapivirine vaginal ring use was associated with minimal changes in the vaginal microbiota that are likely not clinically significant.


Asunto(s)
Dispositivos Anticonceptivos Femeninos , Microbiota , Adolescente , Adulto , Femenino , Humanos , Lactancia , Posmenopausia , Pirimidinas , Vagina/microbiología
8.
J Infect Dis ; 225(5): 846-855, 2022 03 02.
Artículo en Inglés | MEDLINE | ID: mdl-34610131

RESUMEN

BACKGROUND: Previous research revealed antibodies targeting Chlamydia trachomatis elementary bodies was not associated with reduced endometrial or incident infection in C. trachomatis-exposed women. However, data on the role of C. trachomatis protein-specific antibodies in protection are limited. METHODS: A whole-proteome C. trachomatis array screening serum pools from C. trachomatis-exposed women identified 121 immunoprevalent proteins. Individual serum samples were probed using a focused array. Immunoglobulin (Ig) G antibody frequencies and endometrial or incident infection relationships were examined using Wilcoxon rank sum test. The impact of the breadth and magnitude of protein-specific IgGs on ascension and incident infection were examined using multivariable stepwise logistic regression. Complementary RNA sequencing quantified C. trachomatis gene transcripts in cervical swab samples from infected women. RESULTS: IgG to pGP3 and CT_005 were associated with reduced endometrial infection; anti-CT_443, anti-CT_486, and anti-CT_123 were associated with increased incident infection. Increased breadth of protein recognition did not however predict protection from endometrial or incident infection. Messenger RNAs for immunoprevalent C. trachomatis proteins were highly abundant in the cervix. CONCLUSIONS: Protein-specific C. trachomatis antibodies are not sufficient to protect against ascending or incident infection. However, cervical C. trachomatis gene transcript abundance positively correlates with C. trachomatis protein immunogenicity. These abundant and broadly recognized antigens are viable vaccine candidates.


Asunto(s)
Infecciones por Chlamydia , Chlamydia trachomatis , Anticuerpos Antibacterianos , Femenino , Humanos , Inmunoglobulina G , Reinfección
9.
Antimicrob Agents Chemother ; 66(11): e0081622, 2022 11 15.
Artículo en Inglés | MEDLINE | ID: mdl-36255254

RESUMEN

Data to inform behaviorally congruent delivery of rectal microbicides as lubricants are scant. Dapivirine (DPV) is a nonnucleoside reverse transcriptase inhibitor which has been demonstrated to be well-tolerated and efficacious in multiple clinical trials when used in a vaginal ring formulation. DPV gel administered rectally with an applicator was found to be well-tolerated in a phase 1 clinical trial. MTN-033, a single site, open label, sequence randomized, crossover study, enrolled HIV-negative men to receive 0.05% DPV gel intrarectally using an applicator (2.5 g) and self-administered on an artificial phallus as lubricant (up to 10 g). The study evaluated the pharmacokinetics (in plasma, rectal fluid, and mucosal rectal tissue), safety, acceptability, and pharmacodynamics of DPV gel when applied rectally. Statistical comparisons between methods of application were performed using mixed effects models or Wilcoxon's signed rank tests. Sixteen participants used DPV gel by applicator and 15/16 participants used gel as lubricant (mean, 1.8 g; SD, 0.8). DPV plasma AUC0-24h after use as lubricant was estimated to be 0.41 times the AUC0-24h (95% CI 0.24, 0.88) after use with applicator. While DPV was quantifiable in plasma and luminal fluid, it was not quantifiable in tissue for both applicator and as lubricant administration. No related adverse events (AE) were reported, and 15/15 participants felt the gel was easy to use. Evidence of local delivery and systemic absorption of DPV when dosed as an anal lubricant supports the feasibility and potential for development of lubricant-delivered rectal microbicides. There were no safety concerns associated with use of DPV gel and participants reported finding it easy to use. However, lower DPV exposure in plasma and lack of quantifiable DPV in rectal tissue indicate that higher potency, concentration, and longer half-life antiretrovirals with optimized formulations will be needed to achieve protective tissue concentrations.


Asunto(s)
Fármacos Anti-VIH , Infecciones por VIH , Humanos , Masculino , Femenino , Lubricantes/uso terapéutico , Estudios Cruzados , Pirimidinas/farmacocinética , Inhibidores de la Transcriptasa Inversa/uso terapéutico , Geles , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/prevención & control
10.
Annu Rev Med ; 71: 361-377, 2020 01 27.
Artículo en Inglés | MEDLINE | ID: mdl-31613684

RESUMEN

HIV topical microbicides are products with anti-HIV activity, generally incorporating a direct-acting antiretroviral agent, that when applied to the vagina or rectum have the potential to prevent the sexual acquisition of HIV in women and men. Topical microbicides may meet the prevention needs of individuals and groups for whom oral daily forms of pre-exposure prophylaxis (PrEP) have not been acceptable. Microbicides can provide personal control over HIV prevention and offer the possibility of discreet use, qualities that may be particularly important for receptive partners in sexual relationships such as women and transgender women and men, who together account for the clear majority of new HIV infections worldwide. Although the promise of such a product emerged nearly three decades ago, proof of concept has been demonstrated only within the last decade. A robust pipeline of microbicidal gels, films, inserts, and rings has been evaluated in multiple studies among at-risk women and men, and refinement of products for ease of use, reversibility, and high safety is the priority for the field.


Asunto(s)
Fármacos Anti-VIH/uso terapéutico , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/prevención & control , Transmisión Vertical de Enfermedad Infecciosa/prevención & control , Seguridad del Paciente , Complicaciones Infecciosas del Embarazo/prevención & control , Adulto , Antiinfecciosos Locales/uso terapéutico , Composición de Medicamentos , Femenino , Humanos , Masculino , Embarazo , Pronóstico , Recto/efectos de los fármacos , Parejas Sexuales , Vagina/efectos de los fármacos
11.
Prenat Diagn ; 42(5): 549-556, 2022 05.
Artículo en Inglés | MEDLINE | ID: mdl-35278232

RESUMEN

OBJECTIVE: To evaluate the implementation of non-invasive prenatal testing (NIPT) on pregnant women's choices in a national NHS antenatal screening programme for Down's syndrome, Edwards' syndrome and Patau's syndrome. METHOD: An observational study of all pregnant women with a singleton pregnancy and higher chance (≤1:150) combined or quadruple screening result from 30 April 2018 to 25 September 2020 in Wales, UK. Pregnant women's journey through the pathway was determined including uptake of NIPT, performance of NIPT in a non-research setting and invasive procedures performed. RESULTS: Of the 1273 women with a higher chance initial screening, 1073 (84%) chose NIPT contingent test, 174 (14%) no further testing and 26 (2%) invasive procedure. There were 1001 (93%) low chance NIPT results; 11 (1%) failed results and 61 (6%) high chance results. Average annual incidence of 27 invasive procedures undertaken compared to 229 pre-NIPT implementation, a nearly ninefold reduction. Down's syndrome annual live birth rate remained unchanged across the implementation period. DISCUSSION: This study demonstrates that NIPT contingent screening was highly acceptable to women with a resulting reduction in invasive procedures performed. CONCLUSION: The high uptake of NIPT in NHS antenatal screening pathway conditions should inform planning for other national screening programmes.


Asunto(s)
Síndrome de Down , Síndrome de Down/diagnóstico , Femenino , Humanos , Masculino , Embarazo , Diagnóstico Prenatal/métodos , Síndrome de la Trisomía 13 , Síndrome de la Trisomía 18 , Reino Unido/epidemiología
12.
Cytopathology ; 33(3): 350-356, 2022 05.
Artículo en Inglés | MEDLINE | ID: mdl-34935223

RESUMEN

BACKGROUND: The coronavirus pandemic has had a profound impact on the cervical screening programme in Wales for the eligible women, sample takers, and laboratory and colposcopy services. AIMS: To explore what changes due to the pandemic have adversely affected screening outcomes in Wales and what lessons can be learned to improve cervical screening in Wales and elsewhere. METHODS: A review of the screening performance in 2020 and the first quarter of 2021 in Wales as well as a comparison with other cervical screening programme responses to the pandemic. RESULTS: A 3 month pause of screening together with a change in a variety of working practices, including social distancing, use of personal protective equipment, use of virtual meetings, and home working have been implemented. The combination of a pause to the issuing of invitations, plus reduced services in primary and secondary care, together with population lockdown, have contributed to longer waiting times for colposcopy and potentially delayed cancer diagnoses. Some programme changes which were being evaluated prior to the pandemic could be developed now to mitigate the impact of the pandemic such as improved information, increased screening intervals for human papillomavirus-based screening programmes, and home working for call and recall staff. CONCLUSIONS: Despite a considerable short-term interruption to the cervical screening programme, some changes introduced as a result of the coronavirus pandemic could provide key lessons learnt for improvement for cervical cancer prevention services.


Asunto(s)
Infecciones por Coronavirus , Coronavirus , Infecciones por Papillomavirus , Displasia del Cuello del Útero , Neoplasias del Cuello Uterino , Colposcopía , Detección Precoz del Cáncer , Femenino , Humanos , Tamizaje Masivo , Pandemias/prevención & control , Infecciones por Papillomavirus/diagnóstico , Infecciones por Papillomavirus/epidemiología , Infecciones por Papillomavirus/prevención & control , Embarazo , Neoplasias del Cuello Uterino/diagnóstico , Neoplasias del Cuello Uterino/epidemiología , Frotis Vaginal , Displasia del Cuello del Útero/diagnóstico
13.
J Infect Dis ; 224(12 Suppl 2): S23-S28, 2021 08 16.
Artículo en Inglés | MEDLINE | ID: mdl-34396398

RESUMEN

Pelvic inflammatory disease (PID) is a syndrome that causes substantial morbidity, including chronic pelvic pain, to women globally. While limited data are available from low- and middle-income countries, national databases from the United States and Europe suggest that PID incidence may be decreasing but the rate of decrease may differ by the etiologic cause. Recent studies of women with PID have reported that fewer than half of women receiving a diagnosis of PID have gonococcal or chlamydial infection, while Mycoplasma genitalium, respiratory pathogens, and the constellation of bacteria associated with bacterial vaginosis may account for a substantial fraction of PID cases. The clinical diagnosis of PID is nonspecific, creating an urgent need to develop noninvasive tests to diagnose PID. Advances in serologic testing for Chlamydia trachomatis and Neisseria gonorrhoeae could advance epidemiologic studies, while the development of vaccines against these sexually transmitted pathogens could affect incident PID and associated morbidity.


Asunto(s)
Enfermedad Inflamatoria Pélvica , Infecciones por Chlamydia/complicaciones , Infecciones por Chlamydia/diagnóstico , Infecciones por Chlamydia/epidemiología , Infecciones por Chlamydia/microbiología , Chlamydia trachomatis/aislamiento & purificación , Femenino , Gonorrea/diagnóstico , Gonorrea/epidemiología , Humanos , Incidencia , Neisseria gonorrhoeae , Enfermedad Inflamatoria Pélvica/diagnóstico , Enfermedad Inflamatoria Pélvica/epidemiología , Enfermedad Inflamatoria Pélvica/etiología , Enfermedad Inflamatoria Pélvica/microbiología , Estados Unidos/epidemiología
14.
J Infect Dis ; 224(12 Suppl 2): S29-S35, 2021 08 16.
Artículo en Inglés | MEDLINE | ID: mdl-34396407

RESUMEN

Pelvic inflammatory disease (PID) is a clinical syndrome that has been associated with a wide range of potential causal pathogens. Three broad groups of organisms have been isolated from the genital tract of people with PID: sexually transmitted organisms such as Neisseria gonorrhoeae, Chlamydia trachomatis, Mycoplasma genitalium, and Trichomonas vaginalis; bacterial vaginosis (BV)-associated species and genera such as Atopobium vaginae, Sneathia, and Megasphaera; and genera and species usually associated with the gastrointestinal or respiratory tracts such as Bacteroides, Escherichia coli, Streptococcus, or Haemophilus influenza. Although PID is often considered to be synonymous with gonorrhea or chlamydia, these pathogens are found in only one quarter to one third of people with PID, suggesting that broader screening and diagnostic and treatment strategies need to be considered to reduce the burden of PID and its associated sequelae.


Asunto(s)
Enfermedad Inflamatoria Pélvica , Enfermedades de Transmisión Sexual/microbiología , Vagina/microbiología , Infecciones por Chlamydia/diagnóstico , Infecciones por Chlamydia/epidemiología , Chlamydia trachomatis , Femenino , Gonorrea/diagnóstico , Gonorrea/epidemiología , Humanos , Infecciones por Mycoplasma/epidemiología , Mycoplasma genitalium , Neisseria gonorrhoeae , Enfermedad Inflamatoria Pélvica/diagnóstico , Enfermedad Inflamatoria Pélvica/etiología
15.
J Infect Dis ; 224(12 Suppl 2): S64-S71, 2021 08 16.
Artículo en Inglés | MEDLINE | ID: mdl-34396400

RESUMEN

BACKGROUND: Chlamydia trachomatis (Ct) infection ascending to the upper genital tract can cause infertility. Direct association of genetic variants as contributors is challenging because infertility may not be diagnosed until years after infection. Investigating the intermediate trait of ascension bridges this gap. METHODS: We identified infertility genome-wide association study (GWAS) loci using deoxyribonucleic acid from Ct-seropositive cisgender women in a tubal factor infertility study and Ct-infected cisgender women from a longitudinal pelvic inflammatory disease cohort with known fertility status. Deoxyribonucleic acid and blood messenger ribonucleic acid from 2 additional female cohorts with active Ct infection and known endometrial infection status were used to investigate the impact of infertility single-nucleotide polymorphisms (SNPs) on Ct ascension. A statistical mediation test examined whether multiple infertility SNPs jointly influenced ascension risk by modulating expression of mediator genes. RESULTS: We identified 112 candidate infertility GWAS loci, and 31 associated with Ct ascension. The SNPs altered chlamydial ascension by modulating expression of 40 mediator genes. Mediator genes identified are involved in innate immune responses including type I interferon production, T-cell function, fibrosis, female reproductive tract health, and protein synthesis and degradation. CONCLUSIONS: We identified Ct-related infertility loci and their potential functional effects on Ct ascension.


Asunto(s)
Infecciones por Chlamydia/complicaciones , Chlamydia trachomatis/genética , Infertilidad Femenina/genética , Infertilidad Femenina/microbiología , Infertilidad/microbiología , Infecciones por Chlamydia/genética , ADN , Femenino , Estudio de Asociación del Genoma Completo , Interacciones Microbiota-Huesped , Humanos , Polimorfismo de Nucleótido Simple , Factores de Riesgo
16.
Clin Infect Dis ; 72(9): 1538-1543, 2021 05 04.
Artículo en Inglés | MEDLINE | ID: mdl-32350529

RESUMEN

BACKGROUND: Although vaginal symptoms are common, diagnosis of bacterial vaginosis (BV), vulvovaginal candidiasis (VVC), and Trichomonas vaginalis (TV) is not standardized. Diagnostic approaches and appropriateness of treatment were evaluated for women with symptoms of vaginitis who were seeking care at community practice sites. METHODS: Three hundred three symptomatic women, across 8 University of Pittsburgh Medical Center-affiliated clinics, were evaluated per standard office-based practice. Four of 5 vaginal swabs (1 cryopreserved) were collected for a US Food and Drug Administration-authorized nucleic acid amplification test (NAAT) for vaginitis/vaginosis diagnosis; Nugent scoring (BV); yeast culture (VVC); and a second NAAT (for TV). Two hundred ninety women had evaluable samples. Medical record extraction facilitated verification of treatments prescribed within 7 days of the index visit and return visit frequency within 90 days. RESULTS: Women had a mean age of 29.4 ± 6.5 years, 90% were not pregnant, 79% were of white race, and 38% reported vaginitis treatment within the past month. Point-of-care tests, including vaginal pH (15%), potassium hydroxide/whiff (21%), and wet mount microscopy (17%), were rarely performed. Of the 170 women having a laboratory-diagnosed cause of vaginitis, 81 (47%) received 1 or more inappropriate prescriptions. Of the 120 women without BV, TV, or VVC, 41 (34%) were prescribed antibiotics and/or antifungals. Among women without infectious vaginitis, return visits for vaginitis symptoms were more common among women treated empirically compared to those not receiving treatment (9/41 vs 5/79, P = .02). CONCLUSIONS: Within a community practice setting, 42% of women having vaginitis symptoms received inappropriate treatment. Women without infections who received empiric treatment were more likely have recurrent visits within 90 days. CLINICAL TRIALS REGISTRATION: NCT03151928.


Asunto(s)
Candidiasis Vulvovaginal , Vaginitis por Trichomonas , Excreción Vaginal , Vaginosis Bacteriana , Adulto , Candidiasis Vulvovaginal/diagnóstico , Candidiasis Vulvovaginal/tratamiento farmacológico , Femenino , Humanos , Embarazo , Síndrome , Vaginitis por Trichomonas/diagnóstico , Vaginitis por Trichomonas/tratamiento farmacológico , Vaginitis por Trichomonas/epidemiología , Vaginosis Bacteriana/diagnóstico , Vaginosis Bacteriana/tratamiento farmacológico , Vaginosis Bacteriana/epidemiología , Adulto Joven
17.
Clin Infect Dis ; 72(7): 1181-1189, 2021 04 08.
Artículo en Inglés | MEDLINE | ID: mdl-32052831

RESUMEN

BACKGROUND: Anaerobic organisms are important pathogens in acute pelvic inflammatory disease (PID). The currently recommended PID regimen of a single dose of ceftriaxone and doxycycline for 14 days has limited anaerobic activity. The need for broader anaerobic coverage is unknown and concerns have been raised about metronidazole tolerability. METHODS: We conducted a randomized, double-blind, placebo-controlled trial comparing ceftriaxone 250 mg intramuscular single dose and doxycycline for 14 days, with or without 14 days of metronidazole in women with acute PID. The primary outcome was clinical improvement at 3 days following enrollment. Additional outcomes at 30 days following treatment were the presence of anaerobic organisms in the endometrium, clinical cure (absence of fever and reduction in tenderness), adherence, and tolerability. RESULTS: We enrolled 233 women (116 to metronidazole and 117 to placebo). Clinical improvement at 3 days was similar between the 2 groups. At 30 days following treatment, anaerobic organisms were less frequently recovered from the endometrium in women treated with metronidazole than placebo (8% vs 21%, P < .05) and cervical Mycoplasma genitalium was reduced (4% vs 14%, P < .05). Pelvic tenderness was also less common among women receiving metronidazole (9% vs 20%, P < .05). Adverse events and adherence were similar in each treatment group. CONCLUSIONS: In women treated for acute PID, the addition of metronidazole to ceftriaxone and doxycycline was well tolerated and resulted in reduced endometrial anaerobes, decreased M. genitalium, and reduced pelvic tenderness compared to ceftriaxone and doxycycline. Metronidazole should be routinely added to ceftriaxone and doxycycline for the treatment of women with acute PID. CLINICAL TRIALS REGISTRATION: NCT01160640.


Asunto(s)
Mycoplasma genitalium , Enfermedad Inflamatoria Pélvica , Antibacterianos/efectos adversos , Ceftriaxona/efectos adversos , Doxiciclina/uso terapéutico , Femenino , Humanos , Metronidazol/uso terapéutico , Enfermedad Inflamatoria Pélvica/tratamiento farmacológico
18.
Clin Infect Dis ; 73(3): 513-520, 2021 08 02.
Artículo en Inglés | MEDLINE | ID: mdl-32505132

RESUMEN

BACKGROUND: Limited evidence suggests that the nonhormonal contraceptive copper intrauterine device (Cu-IUD) may increase bacterial vaginosis (BV) risk, possibly due to increased volume and duration of menses, a common side effect of Cu-IUD use. Although increases in bleeding typically resolve within 6-12 months following initiation, evaluations of the association between Cu-IUD and BV have not included more than 6 months of follow-up. METHODS: This secondary analysis of a human immunodeficiency virus type 1 prevention trial included 2585 African women ages 18-45 followed for up to 33 months. Women reported contraceptive use each month. BV was evaluated by Nugent score in 6-monthly intervals and, if clinically indicated, by Amsel criteria. Andersen-Gill proportional hazards models were used to (1) evaluate BV risk among Cu-IUD users relative to women using no/another nonhormonal contraceptive and (2) test changes in BV frequency before, while using, and following Cu-IUD discontinuation. RESULTS: BV frequency was highest among Cu-IUD users at 153.6 episodes per 100 person-years (95% confidence interval [CI]: 145.2, 162.4). In adjusted models, Cu-IUD users experienced 1.28-fold (95% CI: 1.12, 1.46) higher BV risk relative to women using no/another nonhormonal contraception. Compared to the 6 months prior to initiation, BV risk was 1.52-fold (95% CI: 1.16, 2.00) higher in the first 6 months of Cu-IUD use and remained elevated over 18 months of use (P < .05). Among women who discontinued Cu-IUD, BV frequency was similar to pre-initiation rates within 1 year. CONCLUSIONS: Cu-IUD users experienced elevated BV risk that persisted throughout use. Women and their providers may wish to consider BV risk when discussing contraceptive options.


Asunto(s)
Dispositivos Intrauterinos de Cobre , Vaginosis Bacteriana , Adolescente , Adulto , Estudios de Cohortes , Femenino , Humanos , Dispositivos Intrauterinos de Cobre/efectos adversos , Levonorgestrel , Estudios Longitudinales , Persona de Mediana Edad , Estudios Prospectivos , Vaginosis Bacteriana/epidemiología , Adulto Joven
19.
BMC Womens Health ; 21(1): 175, 2021 04 23.
Artículo en Inglés | MEDLINE | ID: mdl-33892693

RESUMEN

BACKGROUND: Clinical trials have found that a monthly dapivirine vaginal ring was well-tolerated and reduced HIV-1 risk among women in sub-Saharan Africa. However, in order for the ring or other novel prevention methods to have optimal impact, it is necessary to understand and address women's challenges to uptake and adherence. This paper provides insight into a few key challenges noted by women using the ring and contraceptives simultaneously. METHODS: The qualitative portion of the MTN-020/ASPIRE study consisted of data collection using single in-depth interviews, serial in-depth interviews, and focus group discussions, conducted with 214 participants across 15 sites in Malawi, South Africa, Uganda and Zimbabwe. A coding team used qualitative analysis software to identify themes within the interviews. RESULTS: The primary qualitative themes among participant data pertained to side effects. Participants reported negative side effects related to menses, in some cases attributing these effects to their contraceptives and in others to the vaginal ring. Participants also expressed concern over the long-term impact of contraception and ring use on fertility, including the reversibility of the contraceptive, especially among nulliparous women. CONCLUSIONS: Women's attitudes toward contraceptives can impact their willingness to concurrently use and adhere to a novel HIV prevention product. To optimize the potential of both prevention products, researchers should pre-emptively address concerns about contraceptive impact on fertility and counsel women about the expected side effects of contraceptives versus the ring. Clinical trials identifier NCT01617096. Registered on 6-12-2012 at clinicaltrials.gov https://clinicaltrials.gov/ct2/show/NCT01617096.


Asunto(s)
Fármacos Anti-VIH , Dispositivos Anticonceptivos Femeninos , Infecciones por VIH , Fármacos Anti-VIH/uso terapéutico , Anticoncepción , Femenino , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/prevención & control , Humanos , Malaui , Sudáfrica , Uganda , Zimbabwe
20.
J Low Genit Tract Dis ; 25(1): 76-80, 2021 Jan 01.
Artículo en Inglés | MEDLINE | ID: mdl-33347046

RESUMEN

OBJECTIVE: The aim of the study was to evaluate the performance of nucleic acid amplification testing (NAAT) for the diagnosis of vulvovaginal candidiasis (VVC), bacterial vaginosis, and Trichomonas vaginalis. METHODS: A cross-sectional analysis of women with (n = 200) and without (n = 100) vulvovaginal symptoms was enrolled from outpatient gynecology offices and a vulvovaginal referral clinic. Vaginal swabs were analyzed by wet mount microscopy, yeast culture, Gram stain, T. vaginalis culture, and NAAT. Sensitivity and specificity analyses were performed. RESULTS: Among symptomatic women, the sensitivity of microscopy was 48.5% for VVC and 75% for T. vaginalis. Sensitivities of NAAT and culture for diagnosing VVC were 92.4% and 83.3%, respectively, whereas these methods were 100% and 93.8% for T. vaginalis. The sensitivity for bacterial vaginosis diagnosis by clinical criteria ("Amsel criteria"), Gram stain, and NAAT were 98.7%, 82.7%, and 78.7%, respectively. Test concordance rates were high between culture and NAAT for Candida species (91%) and between Gram stain and NAAT for the detection of bacterial vaginosis (88%). Among asymptomatic women, 20%-21% tested positive for bacterial vaginosis by Gram stain or NAAT, and 8%-13% were colonized with Candida species based on culture or NAAT. CONCLUSIONS: Given the limitations of wet mount sensitivity for VVC and T. vaginalis, culture or NAAT testing should be considered when evaluating women with symptoms of vaginitis who test negative by microscopy. Although Amsel criteria accurately diagnosed bacterial vaginosis, NAAT is preferred for detection of T. vaginalis and performed similarly to culture for the diagnosis of VVC.


Asunto(s)
Candidiasis Vulvovaginal/diagnóstico , Microscopía/estadística & datos numéricos , Técnicas de Amplificación de Ácido Nucleico/estadística & datos numéricos , Vaginitis por Trichomonas/diagnóstico , Técnicas de Cultivo de Célula/métodos , Estudios Transversales , Femenino , Violeta de Genciana , Humanos , Microscopía/métodos , Técnicas de Amplificación de Ácido Nucleico/métodos , Pennsylvania , Fenazinas , Sensibilidad y Especificidad
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