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1.
Med. infant ; 29(4): 268-274, dic 2022. ilus, tab
Artigo em Espanhol | LILACS, UNISALUD, BINACIS | ID: biblio-1415399

RESUMO

Las infecciones por Chlamydia trachomatis han aumentado su prevalencia, especialmente en jóvenes embarazadas. Esto adquiere relevancia en pediatría por el elevado riesgo de transmisión vertical al neonato y su potencial gravedad en el lactante. Estas infecciones requieren de un alto índice de sospecha, por cuadro clínico atípico y signos radiológicos inespecíficos. Los métodos diagnósticos convencionales presentan limitaciones para su detección. Las técnicas moleculares son las recomendadas por su elevada sensibilidad, especificidad y rapidez, lo cual permite una terapéutica adecuada y oportuna. En este estudio, desarrollado en una unidad de cuidados intensivos neonatales de un hospital de alta complejidad durante 12 años, se describieron las características de la población, su presentación clínica y evolución. La detección microbiológica se realizó por métodos moleculares. Se incluyeron 29 pacientes (p) con infección por C. trachomatis (3,9% del total de muestras enviadas),13 p con infección respiratoria y 16 p con compromiso ocular. La mediana de edad fue de 19 días al momento del diagnóstico y el 65% de las gestantes tenía <25 años. Veinticuatro p (83%) eran recién nacidos a término y 23 p (79%) previamente sanos. Nueve p (31%) presentaron fiebre al momento del ingreso y 12 (41%) eosinofilia. De los 13 p con enfermedad respiratoria, 9 (69%) consultaron por tos y 11 (85%) con hipoxemia, con requerimientos de oxígeno en 8 (61%), asistencia respiratoria mecánica en 3 (23%) y uno (16%) requirió ECMO. Los hallazgos radiológicos mostraron un patrón intersticial inespecífico. Nueve p (31%) presentaron coinfección y uno falleció asociado a influenza A (AU)


The prevalence of Chlamydia trachomatis infections has increased, especially among young pregnant women. This is of particular relevance in pediatrics due to the high risk of motherto-child transmission and the potential severity of the infection in infants. A high index of suspicion is required for these infections due to the atypical clinical features and non-specific radiological signs. The usefulness of conventional diagnostic methods is limited. Molecular techniques are recommended because of their high sensitivity, specificity, and speed, allowing for adequate and timely treatment. In this 12-year study conducted in a neonatal intensive care unit of a tertiary-care hospital, patient characteristics, clinical presentation, and outcome are described. Microbiological detection was performed using molecular methods. Twenty-nine patients with C. trachomatis infection (3.9% of the total samples submitted), of whom 13 had respiratory tract infection and 16 ocular involvement, were included. The median age at diagnosis was 19 days and 65% of the mothers were <25 years old. Twenty-four p (83%) were term newborns and 23 patients (79%) were previously healthy. On admission, 9 patients (31%) had fever and 12 (41%) had eosinophilia. Of the 13 patients with respiratory tract involvement, 9 (69%) consulted for cough and 11 (85%) had hypoxemia, requiring oxygen in 8 (61%), mechanical ventilation in 3 (23%), and ECMO in 1 (16%). Radiological findings showed a nonspecific interstitial pattern. Nine patients (31%) presented with coinfection, one of whom died due to an associated influenza A infection (AU)


Assuntos
Humanos , Gravidez , Recém-Nascido , Infecções por Chlamydia/complicações , Infecções por Chlamydia/diagnóstico , Infecções por Chlamydia/terapia , Unidades de Terapia Intensiva Neonatal , Infecções Sexualmente Transmissíveis/etiologia , Infecções Sexualmente Transmissíveis/epidemiologia , Reação em Cadeia da Polimerase/métodos , Transmissão Vertical de Doenças Infecciosas , Chlamydia trachomatis/isolamento & purificação , Estudos Retrospectivos , Antibacterianos/uso terapêutico
2.
Dtsch Med Wochenschr ; 147(21): 1407-1422, 2022 10.
Artigo em Alemão | MEDLINE | ID: mdl-36279866

RESUMO

Early detection and competent treatment of sexually transmitted diseases (STDs) is essential to maintain or restore the sexual health of those affected and to prevent further transmission. In this context, counselling on Sexually transmitted infections (STI) is of particular importance, both in terms of prevention and rapid diagnosis and treatment. STI are not rare in Germany: syphilis, gonococcal and chlamydial infections even occur with increasing frequency, especially among MSM. At-risk populations (MSM, sex workers, people from high-prevalence regions, partners of STI sufferers) should be offered STI screening. If an STI is present, those affected should also be actively screened for other STIs, and furthermore partners should also be examined for STIs and treated if necessary. Syphilis and other STIs also occur with completely unspecific symptoms. Even asymptomatic infections by gonococci, chlamydia, mycoplasma, HPV, HBV, HCV and HPV can lead to serious complications and late consequences. For STI (HIV, HBV, syphilis), highly effective post-exposure prophylaxis (PEP) is available in some cases.


Assuntos
Infecções por Chlamydia , Infecções por HIV , Infecções por Papillomavirus , Minorias Sexuais e de Gênero , Infecções Sexualmente Transmissíveis , Sífilis , Masculino , Humanos , Sífilis/diagnóstico , Sífilis/epidemiologia , Sífilis/terapia , Homossexualidade Masculina , Infecções Sexualmente Transmissíveis/diagnóstico , Infecções Sexualmente Transmissíveis/epidemiologia , Infecções Sexualmente Transmissíveis/terapia , Infecções por Chlamydia/diagnóstico , Infecções por Chlamydia/epidemiologia , Infecções por Chlamydia/terapia
3.
BMJ Open ; 12(12): e067488, 2022 12 20.
Artigo em Inglês | MEDLINE | ID: mdl-36600435

RESUMO

INTRODUCTION: The sexually transmitted infection chlamydia can cause significant complications, particularly among people with female reproductive organs. Optimal management includes timely and appropriate treatment, notifying and treating sexual partners, timely retesting for reinfection and detecting complications including pelvic inflammatory disease (PID). In Australia, mainstream primary care (general practice) is where most chlamydia infections are diagnosed, making it a key setting for optimising chlamydia management. High reinfection and low retesting rates suggest partner notification and retesting are not uniformly provided. The Management of Chlamydia Cases in Australia (MoCCA) study seeks to address gaps in chlamydia management in Australian general practice through implementing interventions shown to improve chlamydia management in specialist services. MoCCA will focus on improving retesting, partner management (including patient-delivered partner therapy) and PID diagnosis. METHODS AND ANALYSIS: MoCCA is a non-randomised implementation and feasibility trial aiming to determine how best to implement interventions to support general practice in delivering best practice chlamydia management. Our method is guided by the Consolidated Framework for Implementation Research and the Normalisation Process Theory. MoCCA interventions include a website, flow charts, fact sheets, mailed specimen kits and autofills to streamline chlamydia consultation documentation. We aim to recruit 20 general practices across three Australian states (Victoria, New South Wales, Queensland) through which we will implement the interventions over 12-18 months. Mixed methods involving qualitative and quantitative data collection and analyses (observation, interviews, surveys) from staff and patients will be undertaken to explore our intervention implementation, acceptability and uptake. Deidentified general practice and laboratory data will be used to measure pre-post chlamydia testing, retesting, reinfection and PID rates, and to estimate MoCCA intervention costs. Our findings will guide scale-up plans for Australian general practice. ETHICS AND DISSEMINATION: Ethics approval was obtained from The University of Melbourne Human Research Ethics Committee (Ethics ID: 22665). Findings will be disseminated via conference presentations, peer-reviewed publications and study reports.


Assuntos
Infecções por Chlamydia , Chlamydia , Feminino , Humanos , Infecções por Chlamydia/diagnóstico , Infecções por Chlamydia/terapia , Estudos de Viabilidade , Reinfecção , Inquéritos e Questionários , Vitória
4.
PLoS One ; 16(5): e0251113, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33970945

RESUMO

BACKGROUND: The United States is experiencing a surge in Chlamydia trachomatis (CT) infections representing a critical need to improve sexually transmitted infection (STI) screening and treatment programs. To understand where patients with STIs seek healthcare, we evaluated the relationship between CT infections and the place where individuals report usually receiving healthcare. METHODS: Our study used a nationally representative sample from the National Health and Nutrition Examination Survey (NHANES) from 1999 to 2016. The study population is adult patients, aged 18 to 39 years in whom a urine CT screen was obtained. Logistic regression models were used to determine if location of usual healthcare was predictive of a positive urine CT screen result. Models were adjusted for known confounders including age, gender, race/ethnicity, education, and insurance status. RESULTS: In this nationally representative sample (n = 19,275; weighted n = 85.8 million), 1.9% of individuals had a positive urine CT result. Participants reported usually going to the doctor's office (70.3%), "no place" (24.8%), Emergency Department (ED) (3.3%), or "other" place (1.7%) for healthcare. In adjusted models, the predicted probability of having a positive urine CT result is higher (4.9% vs 3.2%, p = 0.022; OR = 1.58) among those that reported the ED as their usual place for healthcare compared to those that reported going to a doctor's office or clinic. CONCLUSIONS: Individuals having a positive urine CT screen are associated with using the ED as a usual source for healthcare. Understanding this association has the potential to improve STI clinical and policy interventions as the ED may be a critical site in combatting the record high rates of STIs.


Assuntos
Infecções por Chlamydia/epidemiologia , Infecções por Chlamydia/terapia , Chlamydia trachomatis/isolamento & purificação , Infecções Sexualmente Transmissíveis/epidemiologia , Infecções Sexualmente Transmissíveis/terapia , Adolescente , Adulto , Infecções por Chlamydia/microbiologia , Infecções por Chlamydia/patologia , Bases de Dados Factuais , Atenção à Saúde/métodos , Serviço Hospitalar de Emergência , Feminino , Humanos , Masculino , Inquéritos Nutricionais/métodos , Prevalência , Estudos Retrospectivos , Infecções Sexualmente Transmissíveis/microbiologia , Infecções Sexualmente Transmissíveis/patologia , Estados Unidos/epidemiologia , Adulto Jovem
5.
Rev. Méd. Clín. Condes ; 32(2): 231-239, mar.-abr. 2021.
Artigo em Espanhol | LILACS | ID: biblio-1518392

RESUMO

La infección por Chlamydia trachomatis es la infección de transmisión sexual bacteriana más frecuente en el mundo. En este artículo se revisa la prevalencia reportada en Chile, cuadro clínico, diagnóstico, tratamiento, prevención y complicaciones a largo plazo en mujeres.


Chlamydia trachomatis infection is known to be the most common sexually transmitted bacterial infection world-wide. This article reviews the prevalence reported in the Chilean population, as well as the clinical manifestations, diagnosis, treatment, prevention and complications in women


Assuntos
Humanos , Feminino , Infecções por Chlamydia/diagnóstico , Infecções por Chlamydia/terapia , Chlamydia trachomatis , Infecções por Chlamydia/complicações , Infecções por Chlamydia/fisiopatologia , Infecções por Chlamydia/prevenção & controle , Fatores de Risco
6.
Eye (Lond) ; 35(6): 1614-1619, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-32782336

RESUMO

INTRODUCTION: Since 2007, the ocular 4:1 multiplex PCR assay in NHS Greater Glasgow and Clyde includes Chlamydia trachomatis (ocular chlamydia (OC)) testing. OC can be identified following routine 'viral' ophthalmic testing, including in asymptomatic patients. A published audit from 2008 identified only 25% of our OC patients attended and completed sexual health management, particularly when ophthalmologists initiated treatment. We subsequently created a shared care network between ophthalmology, virology and sexual health (including a designated sexual health advisor) to address these clinical issues. METHODS: A 10-year retrospective service review audit from January 2010 to December 2019 was performed to evaluate this approach. RESULTS: A total of 86 patients were identified (49 males (57%), median age 23 years (range 16-77)). Ophthalmologists initiated treatment for 37 patients (43%) prior to onward sexual health referral. Of this group, 5 (13.5%) received sub-optimal treatments, and 15 (40.5%) subsequently failed to attend sexual health services for partner notification. Of the 49 (57%) patients who attended sexual health, 25 (51%) had genital chlamydia co-infection, and 98% received adequate systemic treatment. All were offered full sexual health screening and 46 (93.9%) completed partner notification. CONCLUSIONS: This shared care approach more than doubled the proportion of OC patients attending sexual health services over this 10-year period (previously 25%, now 57%). Ophthalmologists could defer treatment to sexual health for more effective OC management; however, challenges remain to address real-world issues of non-attendance, inadequate treatment and incomplete contact tracing. We recommend a multi-disciplinary approach to best manage OC cases identified following ophthalmic testing.


Assuntos
Infecções por Chlamydia , Chlamydia trachomatis , Adolescente , Adulto , Idoso , Infecções por Chlamydia/diagnóstico , Infecções por Chlamydia/epidemiologia , Infecções por Chlamydia/terapia , Busca de Comunicante , Feminino , Humanos , Masculino , Programas de Rastreamento , Pessoa de Meia-Idade , Estudos Retrospectivos , Adulto Jovem
7.
Infect Immun ; 89(2)2021 01 19.
Artigo em Inglês | MEDLINE | ID: mdl-33139384

RESUMO

The obligate intracellular bacterium Chlamydia muridarum can colonize the mouse colon for a long period, but a gamma interferon (IFN-γ)-susceptible mutant clone fails to do so. Nevertheless, the mutant's colonization is rescued in mice deficient in interleukin-7 receptor (IL-7R) (lacking both lymphocytes and innate lymphoid cells [ILCs]) or IFN-γ but not in mice lacking recombination-activated gene 1 (Rag1-/- mice) (lacking adaptive immunity lymphocytes), indicating a critical role of ILC-derived IFN-γ in regulating chlamydial colonization. In the current study, we have used an adoptive transfer approach for further characterizing the responsible ILCs. First, intestinal ILCs isolated from Rag1-/- mice were able to rescue IL-7R-deficient mice to restrict the colonization of the IFN-γ-susceptible Chlamydia muridarum mutant. Second, the responsible ILCs were localized to the intestinal lamina propria since ILCs from the lamina propria but not the intraepithelial compartment conferred the restriction. Third, lamina propria ILCs enriched for RORγt expression but not those negative for RORγt rescued the IL-7R-deficient mice to restrict mutant colonization, indicating a critical role of group 3-like ILCs (ILC3s) since RORγt is a signature transcriptional factor of ILC3s. Fourth, a portion of the ILC3s expressed IFN-γ, thus defined as ex-ILC3s, and the transfer of the ex-ILC3s conferred colon resistance to mutant Chlamydia muridarum colonization in IFN-γ-deficient mice. Finally, genetically labeled RORγt-positive (RORγt+) ILCs were able to inhibit mutant colonization. Thus, we have demonstrated that ILC3s are sufficient for regulating chlamydial colonization, laying a foundation for further revealing the mechanisms by which an obligate intracellular bacterium activates colonic ILC3s.


Assuntos
Infecções por Chlamydia/terapia , Chlamydia muridarum/genética , Chlamydia muridarum/imunologia , Chlamydia muridarum/patogenicidade , Resistência à Doença/imunologia , Imunidade Inata/genética , Linfócitos/imunologia , Transferência Adotiva , Animais , Colo/microbiologia , Modelos Animais de Doenças , Resistência à Doença/genética , Variação Genética , Genótipo , Humanos , Interferon gama/imunologia , Transfusão de Linfócitos , Camundongos , Mutação , Virulência/genética , Virulência/imunologia
8.
Epidemiol. serv. saúde ; 30(spe1): e2020633, 2021. tab, graf
Artigo em Inglês, Português | LILACS | ID: biblio-1154152

RESUMO

Este artigo aborda as infecções que causam corrimento uretral, tema que compõe o Protocolo Clínico e Diretrizes Terapêuticas para Atenção Integral às Pessoas com Infecções Sexualmente Transmissíveis, publicado pelo Ministério da Saúde do Brasil em 2020. Tal documento foi elaborado com base em evidências científicas e validado em discussões com especialistas. As uretrites, quando não tratadas de maneira correta, ou quando o microrganismo desenvolve resistência ao tratamento empregado, podem causar danos graves e até irreversíveis à saúde. Os níveis de resistência antimicrobiana que esses agentes têm desenvolvido são considerados uma emergência global em saúde pública. Neste artigo, são apresentados aspectos epidemiológicos e clínicos, recomendações sobre diagnóstico e tratamento e estratégias para as ações de vigilância, prevenção e controle das infecções que causam corrimento uretral, com a finalidade de contribuir com gestores e profissionais de saúde para a qualificação da assistência.


This article approach infections that cause urethral discharge, theme which is part of the Clinical Protocol and Therapeutic Guidelines for Comprehensive Care for People with Sexually Transmitted Infections, published by the Ministry of Health of Brazil in 2020. These guidelines were prepared based on scientific evidence and validated in discussions with experts. When urethritis is not treated correctly, or when the microorganism develops antimicrobial resistance, it can cause serious and even irreversible health damage. It is noteworthy that the high levels of antimicrobial resistance developed by pathogens that causes urethritis comprises a global emergency in public health. This article presents epidemiological and clinical aspects, recommendations on diagnostic and treatment, and strategies for surveillance, prevention and control actions of infections that cause urethral discharge, with the purpose of contributing with managers and health professionals to care qualification.


El artículo trata de las infecciones que causan secreción uretral, tema que hace parte del Protocolo Clínico y Directrices Terapéuticas para Atención Integral a Personas con Infecciones de Transmisión Sexual, publicado por el Ministerio de Salud de Brasil en 2020. Dicho documento se elaboró con base en evidencias científicas y se validó en discusiones con expertos. Las uretritis, cuando no tratadas correctamente o cuando el microorganismo desarrolla resistencia al tratamiento, puede ocasionar daños graves a la salud. Los niveles de resistencia antimicrobiana que estos agentes desarrollan son considerados una emergencia de salud pública. En este artículo, se presentan aspectos epidemiológicos y clínicos, recomendaciones para el diagnóstico y tratamiento y estrategias para acciones de monitoreo epidemiológico, prevención y control de las infecciones que causan secreción uretral, a fin de contribuir con gestores y personal de salud para la cualificación de la asistencia.


Assuntos
Humanos , Uretrite/terapia , Infecções Sexualmente Transmissíveis/diagnóstico , Infecções Sexualmente Transmissíveis/terapia , Infecções Sexualmente Transmissíveis/epidemiologia , Protocolos Clínicos , Brasil/epidemiologia , Infecções por Chlamydia/terapia , Gonorreia/terapia
9.
Praxis (Bern 1994) ; 109(16): 1251-1259, 2020.
Artigo em Alemão | MEDLINE | ID: mdl-33292013

RESUMO

Pelvic Inflammatory Disease - Synergies between Family Practices and Gynaecological Specialised Assessment Abstract. The 'pelvic inflammatory disease' (PID) describes an ascending inflammation of the upper female genital tract, beginning with a local cervicitis and proceeding to endometritis and adnexitis. It is a common clinical picture with rising numbers in recent years, and it occurs both in gynaecological and general practice. The symptoms are often unspecific, discrete or althogehter lacking. In order to reduce long-term risks of chronic pelvic pain, sterility and/or ectopic pregnancies, rapid diagnosis followed by immediate therapy and a good interdisciplinary cooperation are necessary. Screening programs for chlamydia and gonococcus as the most common pathogens of PID have not yet been implemented in Switzerland so far.


Assuntos
Infecções por Chlamydia , Gonorreia , Doença Inflamatória Pélvica , Infecções por Chlamydia/diagnóstico , Infecções por Chlamydia/terapia , Medicina de Família e Comunidade , Feminino , Humanos , Doença Inflamatória Pélvica/diagnóstico , Doença Inflamatória Pélvica/terapia , Gravidez , Suíça
10.
J Int AIDS Soc ; 23 Suppl 6: e25599, 2020 10.
Artigo em Inglês | MEDLINE | ID: mdl-33000907

RESUMO

INTRODUCTION: Young men who have sex with men (MSM) and transgender women (TGW) face stigmas that hinder access to healthcare. The aim of the study was to understand age-related determinants of healthcare needs and engagement among MSM and TGW. METHODS: The TRUST/RV368 cohort provides integrated prevention and treatment services for HIV and other sexually transmitted infections (STIs) tailored to the needs of sexual and gender minorities. MSM and TGW aged ≥16 years in Abuja and ≥18 years Lagos, Nigeria, completed standardized behavioural questionnaires and were tested for HIV, Neisseria gonorrhoeae (NG) and Chlamydia trachomatis (CT) every three months for up to 18 months. Logistic regression was used to estimate adjusted odds ratios (aORs) for associations of age and other factors with outcomes of interest upon enrolment, including HIV care continuum steps - HIV testing, ART initiation and viral suppression <1000 copies/mL. Cox proportional hazards models were used to calculate adjusted hazard ratios (aHRs) for associations with incident infections. RESULTS: Between March 2013 and February 2019, 2123 participants were enrolled with median age 23 (interquartile range 21 to 27) years. Of 1745 tested, 865 (49.6%) were living with HIV. HIV incidence was 11.6/100 person-years [PY], including 23.1/100PY (95% CI 15.5 to 33.1) among participants aged 16 to 19 years and 23.8/100 PY (95% CI 13.6 to 39.1) among TGW. Compared to participants aged ≥25 years, those aged 16 to 19 years had decreased odds of prior HIV testing (aOR 0.40 [95% CI 0.11 to 0.92]), disclosing same-sex sexual practices to healthcare workers (aOR 0.53 [95% CI 0.36 to 0.77]) and receiving HIV prevention information (aOR 0.60 [95% CI 0.41 to 0.87]). They had increased odds of avoiding healthcare (aOR 1.94 [95% CI 1.3 to 2.83]) and engaging in transactional sex (aOR 2.76 [95% CI 1.92 to 3.71]). Age 16 to 19 years was independently associated with increased incidence of HIV (aHR 4.09 [95% CI 2.33 to 7.49]), NG (aHR 3.91 [95% CI 1.90 to 8.11]) and CT (aHR 2.74 [95% CI 1.48 to 5.81]). CONCLUSIONS: Young MSM and TGW demonstrated decreased healthcare engagement and higher incidence of HIV and other STIs as compared to older participants in this Nigerian cohort. Interventions to address unique obstacles to healthcare engagement by adolescents and young adults are needed to curb the spread of HIV and other STIs among MSM and TGW in Nigeria.


Assuntos
Atenção à Saúde , Homossexualidade Masculina , Avaliação das Necessidades , Minorias Sexuais e de Gênero , Infecções Sexualmente Transmissíveis/terapia , Pessoas Transgênero , Adolescente , Adulto , Fatores Etários , Infecções por Chlamydia/diagnóstico , Infecções por Chlamydia/terapia , Chlamydia trachomatis , Estudos de Coortes , Estudos Transversais , Revelação , Feminino , Gonorreia/diagnóstico , Gonorreia/terapia , Infecções por HIV/prevenção & controle , Infecções por HIV/terapia , Instalações de Saúde , Pessoal de Saúde , Humanos , Masculino , Neisseria gonorrhoeae , Nigéria/epidemiologia , Infecções Sexualmente Transmissíveis/diagnóstico , Infecções Sexualmente Transmissíveis/epidemiologia , Estigma Social , Pessoas Transgênero/estatística & dados numéricos , Adulto Jovem
11.
Sex Health ; 17(4): 381-383, 2020 08.
Artigo em Inglês | MEDLINE | ID: mdl-32843134

RESUMO

Partners of heterosexual cases with chlamydia, who were identified as having difficulty in attending the clinic, were offered patient-delivered partner therapy (PDPT). Medication was delivered by the index case after telephone consultation with the partner to assess symptoms and medical history. The opportunity for testing of partners for chlamydia was provided. The PDPT process was evaluated by standardised phone interview with index patients and partners. Telephone consultation enables safe medication prescribing and an opportunity for further contact tracing. Partners were unlikely to seek testing when provided with PDPT. Delivery of medication resulted in a reported rate of treatment of 100%. PDPT was an acceptable treatment option to both index and partner and should be considered if legislation permits.


Assuntos
Antibacterianos/uso terapêutico , Infecções por Chlamydia/epidemiologia , Infecções por Chlamydia/terapia , Busca de Comunicante , Aceitação pelo Paciente de Cuidados de Saúde , Parceiros Sexuais , Adolescente , Adulto , Azitromicina/uso terapêutico , Infecções por Chlamydia/prevenção & controle , Doxiciclina/uso terapêutico , Feminino , Acessibilidade aos Serviços de Saúde , Heterossexualidade , Humanos , Masculino , Pessoa de Meia-Idade , Adulto Jovem
12.
Infect Immun ; 88(10)2020 09 18.
Artigo em Inglês | MEDLINE | ID: mdl-32747602

RESUMO

Chlamydia trachomatis, a leading infectious cause of tubal infertility, induces upper genital tract pathology, such as hydrosalpinx, which can be modeled with Chlamydia muridarum infection in mice. Following C. muridarum inoculation, wild-type mice develop robust hydrosalpinx, but OT1 mice fail to do so because their T cell receptors are engineered to recognize a single ovalbumin epitope (OVA457-462). These observations have demonstrated a critical role of Chlamydia-specific T cells in chlamydial pathogenicity. In the current study, we have also found that OT1 mice can actively inhibit chlamydial pathogenicity. First, depletion of CD8+ T cells from OT1 mice led to the induction of significant hydrosalpinx by Chlamydia, indicating that CD8+ T cells are necessary to inhibit chlamydial pathogenicity. Second, adoptive transfer of CD8+ T cells from OT1 mice to CD8 knockout mice significantly reduced chlamydial induction of hydrosalpinx, demonstrating that OT1 CD8+ T cells are sufficient for attenuating chlamydial pathogenicity in CD8 knockout mice. Finally, CD8+ T cells from OT1 mice also significantly inhibited hydrosalpinx development in wild-type mice following an intravaginal inoculation with Chlamydia Since T cells in OT1 mice are engineered to recognize only the OVA457-462 epitope, the above observations have demonstrated a chlamydial antigen-independent immune mechanism for regulating chlamydial pathogenicity. Further characterization of this mechanism may provide information for developing strategies to reduce infertility-causing pathology induced by infections.


Assuntos
Linfócitos T CD8-Positivos/imunologia , Infecções por Chlamydia/imunologia , Chlamydia muridarum/patogenicidade , Salpingite/imunologia , Transferência Adotiva , Animais , Derrame de Bactérias/imunologia , Linfócitos T CD8-Positivos/transplante , Infecções por Chlamydia/microbiologia , Infecções por Chlamydia/patologia , Infecções por Chlamydia/terapia , Chlamydia muridarum/imunologia , Modelos Animais de Doenças , Feminino , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Transgênicos , Ovalbumina/química , Ovalbumina/imunologia , Fragmentos de Peptídeos/imunologia , Receptores de Antígenos de Linfócitos T/genética , Receptores de Antígenos de Linfócitos T/imunologia , Salpingite/microbiologia , Salpingite/patologia , Salpingite/terapia
13.
Sex Transm Dis ; 47(12): 790-797, 2020 12.
Artigo em Inglês | MEDLINE | ID: mdl-32740451

RESUMO

BACKGROUND: The majority of research on patient-delivered partner therapy (PDPT) has focused on its impact on reinfections. This study aimed to systematically review the evidence regarding the acceptability of PDPT by patients and partners for chlamydia infection. METHODS: Three electronic databases were searched in March 2019 using terms related to PDPT. Studies were included if they reported on patient or partner acceptance of PDPT for chlamydia and were conducted in high-income countries. Actual and perceived acceptabilities of PDPT were assessed. RESULTS: Thirty-three studies were included: 24 quantitative, 3 qualitative, and 6 mixed methods. Most were clinic based. Quantitative data showed that participants' perceived willingness to give PDPT to their partner(s) ranged from 44.7% to 96.3% (median, 84%), and 24% to 71% (median, 65%) of people who offered PDPT for their partner(s) accepted it. Partners' perceived willingness to accept ranged from 42.7% to 67% (median, 62%), and actual acceptance ranged from 44.7% to 80% (median, 77%). Those in longer-term relationships were generally more likely to accept PDPT; however, beyond this, we identified few clear trends. Qualitative studies found that convenience of PDPT and assurance of partner treatment were benefits, whereas partners not seeing a health care professional was viewed as a downside. Packaging that appeared legitimate and coaching on delivering PDPT were facilitators. CONCLUSIONS: Because patients bear responsibility for the success of PDPT, this information is crucial in clinical settings. Acceptance, perceived and real, of PDPT was generally high. Patients are best placed to determine whether PDPT is appropriate for them, and it should be offered as an option.


Assuntos
Antibacterianos/uso terapêutico , Infecções por Chlamydia/terapia , Busca de Comunicante/métodos , Gonorreia/terapia , Parceiros Sexuais/psicologia , Instituições de Assistência Ambulatorial , Antibacterianos/administração & dosagem , Chlamydia , Infecções por Chlamydia/tratamento farmacológico , Infecções por Chlamydia/epidemiologia , Infecções por Chlamydia/transmissão , Chlamydia trachomatis , Busca de Comunicante/estatística & dados numéricos , Gonorreia/epidemiologia , Gonorreia/transmissão , Humanos , Gestantes
14.
Sex Health ; 17(4): 321-329, 2020 08.
Artigo em Inglês | MEDLINE | ID: mdl-32741430

RESUMO

Background Patient-delivered partner therapy (PDPT) is a method for an index patient to give treatment for genital chlamydia to their sexual partner(s) directly. In Australia, PDPT is considered suitable for heterosexual partners of men and women, but is not uniformly endorsed. We explored the policy environment for PDPT in Australia and considered how PDPT might become a routine option. METHODS: Structured interviews were conducted with 10 key informants (KIs) representing six of eight Australian jurisdictions and documents relevant to PDPT were appraised. Interview transcripts and documents were analysed together, drawing on KIs' understanding of their jurisdiction to explore our research topics, namely the current context for PDPT, challenges, and actions needed for PDPT to become routine. RESULTS: PDPT was allowable in three jurisdictions (Victoria, New South Wales, Northern Territory) where State governments have formally supported PDPT. In three jurisdictions (Western Australia, Australian Capital Territory, Tasmania), KIs viewed PDPT as potentially allowable under relevant prescribing regulations; however, no guidance was available. Concern about antimicrobial stewardship precluded PDPT inclusion in the South Australian strategy. For Queensland, KIs viewed PDPT as not allowable under current prescribing regulations and, although a Medicine and Poisons Act was passed in 2019, it is unclear if PDPT will be possible under new regulations. Clarifying the doctor-partner treating relationship and clinical guidance within a care standard were viewed as crucial for PDPT uptake, irrespective of regulatory contexts. CONCLUSION: Endorsement and guidance are essential so doctors can confidently and routinely offer PDPT in respect to professional standards and regulatory requirements.


Assuntos
Antibacterianos/uso terapêutico , Infecções por Chlamydia/terapia , Atenção à Saúde/métodos , Atenção à Saúde/normas , Pacientes , Médicos/normas , Parceiros Sexuais , Austrália/epidemiologia , Busca de Comunicante , Documentação , Feminino , Guias como Assunto , Humanos , Entrevistas como Assunto , Masculino , Política Pública , Padrão de Cuidado
15.
FEMS Microbiol Rev ; 44(5): 583-605, 2020 09 01.
Artigo em Inglês | MEDLINE | ID: mdl-32556174

RESUMO

The iconic Australian marsupial, the koala (Phascolarctos cinereus), has suffered dramatic population declines as a result of habitat loss and fragmentation, disease, vehicle collision mortality, dog attacks, bushfires and climate change. In 2012, koalas were officially declared vulnerable by the Australian government and listed as a threatened species. In response, research into diseases affecting koalas has expanded rapidly. The two major pathogens affecting koalas are Chlamydia pecorum, leading to chlamydial disease and koala retrovirus (KoRV). In the last eight years, these pathogens and their diseases have received focused study regarding their sources, genetics, prevalence, disease presentation and transmission. This has led to vast improvements in pathogen detection and treatment, including the ongoing development of vaccines for each as a management and control strategy. This review will summarize and highlight the important advances made in understanding and combating C. pecorum and KoRV in koalas, since they were declared a threatened species. With complementary advances having also been made from the koala genome sequence and in our understanding of the koala immune system, we are primed to make a significant positive impact on koala health into the future.


Assuntos
Infecções por Chlamydia/veterinária , Phascolarctidae/imunologia , Infecções por Retroviridae/veterinária , Animais , Austrália , Chlamydia , Infecções por Chlamydia/diagnóstico , Infecções por Chlamydia/prevenção & controle , Infecções por Chlamydia/terapia , Espécies em Perigo de Extinção , Phascolarctidae/microbiologia , Phascolarctidae/virologia , Retroviridae , Infecções por Retroviridae/diagnóstico , Infecções por Retroviridae/prevenção & controle , Infecções por Retroviridae/terapia , Vacinas Virais
16.
BMC Health Serv Res ; 20(1): 316, 2020 Apr 16.
Artigo em Inglês | MEDLINE | ID: mdl-32299437

RESUMO

BACKGROUND: Community-based screening may be one solution to increase testing and treatment of sexually transmitted infections in sexually active teenagers, but there are few data on the practicalities and cost of running such a service. We estimate the cost of running a 'Test n Treat' service providing rapid chlamydia (CT) and gonorrhoea (NG) testing and same day on-site CT treatment in technical colleges. METHODS: Process data from a 2016/17 cluster randomised feasibility trial were used to estimate total costs and service uptake. Pathway mapping was used to model different uptake scenarios. Participants, from six London colleges, provided self-taken genitourinary samples in the nearest toilet. Included in the study were 509 sexually active students (mean 85/college): median age 17.9 years, 49% male, 50% black ethnicity, with a baseline CT and NG prevalence of 6 and 0.5%, respectively. All participants received information about CT and NG infections at recruitment. When the Test n Treat team visited, participants were texted/emailed invitations to attend for confidential testing. Three colleges were randomly allocated the intervention, to host (non-incentivised) Test n Treat one and four months after baseline. All six colleges hosted follow-up Test n Treat seven months after baseline when students received a £10 incentive (to participate). RESULTS: The mean non-incentivised daily uptake per college was 5 students (range 1 to 17), which cost £237 (range £1082 to £88) per student screened, and £4657 (range £21,281 to £1723) per CT infection detected, or £13,970 (range £63,842 to £5169) per NG infection detected. The mean incentivised daily uptake was 19 students which cost £91 per student screened, and £1408/CT infection or £7042/NG infection detected. If daily capacity for screening were achieved (49 students/day), costs including incentives would be £47 per person screened and £925/CT infection or £2774/NG infection detected. CONCLUSIONS: Delivering non-incentivised Test n Treat in technical colleges is more expensive per person screened than CT and NG screening in clinics. Targeting areas with high infection rates, combined with high, incentivised uptake could make costs comparable. TRIAL REGISTRATION: ISRCTN58038795, Assigned August 2016, registered prospectively.


Assuntos
Infecções por Chlamydia/diagnóstico , Gonorreia/diagnóstico , Custos de Cuidados de Saúde/estatística & dados numéricos , Programas de Rastreamento/economia , Infecções Sexualmente Transmissíveis/diagnóstico , Adolescente , Infecções por Chlamydia/epidemiologia , Infecções por Chlamydia/terapia , Custos e Análise de Custo , Estudos de Viabilidade , Feminino , Gonorreia/epidemiologia , Gonorreia/terapia , Humanos , Londres/epidemiologia , Masculino , Motivação , Prevalência , Estudantes , Inquéritos e Questionários , Universidades , Adulto Jovem
17.
Artigo em Inglês | MEDLINE | ID: mdl-32295243

RESUMO

Background: Early sexually transmitted infections (STIs) diagnosis facilitates prompt treatment initiation and contributes to reduced transmission. This study examined the extent to which contextual characteristics such as proximity to screening site, rurality, and neighborhood disadvantage along with demographic variables, may influence treatment seeking behavior among individuals with STIs (i.e., chlamydia, gonorrhea, and syphilis). Methods: Data on 16,075 diagnosed cases of STIs between 2007 and 2018 in Yakima County were obtained from the Washington State Department of Health Database Surveillance System. Multilevel models were applied to explore the associations between contextual and demographic characteristics and two outcomes: (a) not receiving treatment and (b) the number of days to receiving treatment. Results: Contextual risk factors for not receiving treatment or having increased number of days to treatment were living ≥10 miles from the screening site and living in micropolitan, small towns, or rural areas. Older age was a protective factor and being female was a risk for both outcomes. Conclusions: Healthcare providers and facilities should be made aware of demographic and contextual characteristics that can impact treatment seeking behavior among individuals with STIs, especially among youth, females, and rural residents.


Assuntos
Acessibilidade aos Serviços de Saúde , Infecções Sexualmente Transmissíveis , Adolescente , Idoso , Infecções por Chlamydia/diagnóstico , Infecções por Chlamydia/terapia , Feminino , Gonorreia/diagnóstico , Gonorreia/terapia , Infecções por HIV/diagnóstico , Infecções por HIV/terapia , Humanos , Masculino , Programas de Rastreamento , População Rural , Infecções Sexualmente Transmissíveis/diagnóstico , Infecções Sexualmente Transmissíveis/terapia , Sífilis/diagnóstico , Sífilis/terapia , Washington
18.
Hautarzt ; 71(4): 275-283, 2020 Apr.
Artigo em Alemão | MEDLINE | ID: mdl-32025745

RESUMO

BACKGROUND: Sexually transmitted infections (STIs) in the anorectal region are disproportionally detected in risk populations such as men who have sex with men (MSM). However, due to changes in sexual behaviour they are increasingly diagnosed in heterosexual individuals. Due to the recent implementation of oral HIV pre-exposure prophylaxis together with lack of condom use, a further rise in STIs is expected. OBJECTIVES: This review addresses epidemiology, clinical picture, diagnostic pitfalls and current therapy guidelines of "classical" bacterial STIs involving the anorectum. CONCLUSIONS: STI manifestations in the anal region are frequently nonspecific or asymptomatic so that the diagnosis may be missed. In an endoscopic examination of the rectum, they can even mimic inflammatory bowel disease or malignancy. Therefore, knowledge of possible symptoms of bacterial STIs in this area is helpful for early diagnosis. Coinfections with other STIs are common and should prompt a search of other pathogens including HIV and hepatitis B/C.


Assuntos
Doenças do Ânus/diagnóstico , Coinfecção/diagnóstico , Doenças Retais/diagnóstico , Comportamento Sexual , Infecções Sexualmente Transmissíveis , Sexo sem Proteção , Doenças do Ânus/epidemiologia , Doenças do Ânus/terapia , Infecções por Chlamydia/diagnóstico , Infecções por Chlamydia/epidemiologia , Infecções por Chlamydia/terapia , Coinfecção/epidemiologia , Feminino , Gonorreia/diagnóstico , Gonorreia/epidemiologia , Gonorreia/terapia , Infecções por HIV/diagnóstico , Infecções por HIV/epidemiologia , Heterossexualidade , Homossexualidade Masculina , Humanos , Linfogranuloma Venéreo/diagnóstico , Linfogranuloma Venéreo/epidemiologia , Linfogranuloma Venéreo/terapia , Masculino , Doenças Retais/epidemiologia , Doenças Retais/terapia , Infecções Sexualmente Transmissíveis/diagnóstico , Infecções Sexualmente Transmissíveis/epidemiologia , Infecções Sexualmente Transmissíveis/terapia , Sífilis/diagnóstico , Sífilis/epidemiologia , Sífilis/terapia
20.
Sex Transm Dis ; 46(7): 480-486, 2019 07.
Artigo em Inglês | MEDLINE | ID: mdl-30950981

RESUMO

BACKGROUND: We aimed to test the acceptability and utility of strategies designed to facilitate the delivery of clinical best practice for patients diagnosed with chlamydia or gonorrhea in primary care. METHODS: A nonrandomized pilot intervention study with a historic control period was run over 9 months in six primary health care clinics (2 youth services, 3 low-fee clinics, and 1 student health service) in Wellington, New Zealand. "Study nurses" in participating clinics oversaw the implementation of strategies designed to facilitate partner notification and follow-up for patients diagnosed with chlamydia or gonorrhea. Clinics chose which of 2 approaches they wished to trial-either managing all study processes themselves or drawing on the assistance of an external specialist sexual health advisor. Outcome measures included acceptability and utility of study processes ascertained via structured interviews with study nurses and collection of clinical data. RESULTS: Outcomes for 287 patients seen during the intervention were compared with 240 historic controls. Participant views on study processes were positive overall, and all clinics intended to continue all or most of the study processes implemented. During the intervention, substantial improvements were observed in documented patient management (sexual history, partner notification, and outcomes, P < 0.05). Increases were observed in percentages of patients reached for follow-up (74% vs. 26% at baseline, P < 0.05) and partners reported to have been notified (79% vs. 23%, P < 0.05). CONCLUSIONS: Nurse-led strategies implemented were deemed acceptable and appeared to facilitate delivery of best practice care for patients diagnosed with bacterial sexually transmitted infections in participating primary care practices.


Assuntos
Infecções por Chlamydia/terapia , Chlamydia trachomatis/isolamento & purificação , Busca de Comunicante , Gonorreia/terapia , Neisseria gonorrhoeae/isolamento & purificação , Atenção Primária à Saúde , Adolescente , Adulto , Infecções por Chlamydia/epidemiologia , Intervenção Médica Precoce , Feminino , Gonorreia/epidemiologia , Humanos , Masculino , Nova Zelândia/epidemiologia , Enfermeiras e Enfermeiros , Projetos Piloto , Estudos Retrospectivos , Comportamento Sexual , Parceiros Sexuais , Adulto Jovem
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