Anticipated Notification of Sexual Partners following STD Diagnosis among Men Who Have Sex with Men and Transgender Women in Lima, Peru: A Mixed Methods Analysis

Background: New strategies to support partner notification (PN) are critical for STD control and require detailed understanding of how specific individual and partnership characteristics guide notification decisions. Methods: From 2011 to 2012, 397 MSM and TW recently diagnosed with HIV, syphilis, or another STD completed a survey on anticipated notification of recent sexual partners and associated factors. Qualitative interviews were conducted with a subset of participants to provide further depth to quantitative findings. Prevalence ratios and generalized estimating equation (GEE) models were used to analyze participant- and partner-level factors associated with anticipated PN. Results: Among all partners reported, 52.5% were described as “Very Likely” or “Somewhat Likely” to be notified. Anticipated notification was more likely for main partners than casual (adjusted Prevalence Ratio [aPR], 95% CI: 0.63, 0.54–0.75) or commercial (aPR, 95% CI: 0.44, 0.31–0.62) partners. Other factors associated with likely notification included perception of the partner as an STD source (aPR, 95% CI: 1.27, 1.10–1.48) and anticipated future sexual contact with the partner (aPR, 95% CI: 1.30, 1.11–1.52). An HIV diagnosis was associated with a lower likelihood of notification than non-HIV STDs (aPR: 0.68, 0.55–0.86). Qualitative discussion of the barriers and incentives to PN reflected a similar differentiation of anticipated notification according to partnership type and type of HIV/STD diagnosis. Discussion: Detailed attention to how partnership characteristics guide notification outcomes is essential to the development of new PN strategies. By accurately and thoroughly assessing the diversity of partnership interactions among individuals with HIV/STD, new notification techniques can be tailored to partner-specific circumstances

The influence of the preparation methods on the inclusion of model drugs in a β-cyclodextrin cavity

NOTICE: this is the author’s version of a work that was accepted for publication in European Journal of Pharmaceutics and Biopharmaceutics. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Eur J Pharm Biopharm. 2009 Feb;71(2):377-386. Epub 2008 Oct 17.The work aims to prove the complexation of two model drugs (ibuprofen, IB and indomethacin, IN) by bcyclodextrin (bCD), and the effect of water in such a process, and makes a comparison of their complexation yields. Two methods were considered: kneading of a binary mixture of the drug, bCD, and inclusion of either IB or IN in aqueous solutions of bCD. In the latter method water was removed by air stream, spray-drying and freeze-drying. To prove the formation of complexes in final products, optical microscopy, UV spectroscopy, IR spectroscopy, DSC, X-ray and NMR were considered. Each powder was added to an acidic solution (pH = 2) to quantify the concentration of the drug inside bCD cavity. Other media (pH = 5 and 7) were used to prove the existence of drug not complexed in each powder, as the drugs solubility increases with the pH. It was observed that complexation occurred in all powders, and that the fraction of drug inside the bCD did not depend neither on the method of complexation nor on the processes of drying considered

Diseño de componentes constructivos utilizando residuos sólidos urbanos: tubos de cartón espiralado

El mundo de hoy vive uno de los problemas más graves en la historia: la degradación del medio ambiente. El desafío para el futuro es, por tanto, conseguir compatibilizar el desarrollo económico de la sociedad con la preservación del medio ambiente que la sustenta; es lo que se conoce como desarrollo sostenible

Integración de geotecnologías en el estudio del cambio climático global, en espacios territoriales dentro de un contexto marginal. Caso de estudio: Malargüe, Mendoza, Argentina

Desde el siglo XVIII y hasta la fecha la ciencia ha cruzado una barrera descomunal que nos permite encontrar respuestas a los más insólitos interrogantes frente a problemáticas creadas por el hombre o por la propia naturaleza.  Las geotecnologías se nos presentan, entonces, como una fuente inagotable y permanente del saber y del hacer frente a la dinámica que nos impone el ambiente

Primera caracterización molecular de Leishmania infantum en pacientes con leishmaniosis visceral de la Provincia de Misiones, Argentina

Introducción. La leishmaniosis cutánea por Leishmania braziliensis ha sidotradicionalmente endémica en Argentina y se han sido descritos casos de compromiso visceral después de una leishmaniosis cutánea inicial. La leishmaniosis visceral emergió en Argentina en el año 2006 en la ciudad de Posadas, provincia de Misiones, afectando tanto a humanos como a perros. Objetivo. Identificar el agente etiológico a nivel de especie de los pacientes diagnosticados con leishmaniosis visceral en Misiones y describir sus características clínico-epidemiológicas.Materiales y métodos. Se estudió una serie de 24 pacientes con diagnóstico confirmado de leishmaniosis visceral en la provincia de Misiones en el período 2009 al 2016. Para la identificación de Leishmania spp., los pacientes fueron sometidos a estudios diagnósticos indirectos (serológicos) y directos (microscopía, detección de ADN y secuenciación). También, se estudiaron variables como edad, sexo, lugar de residencia, y signos y síntomas clínicos indicativos de leishmaniosis visceral. Resultados. De los 24 pacientes estudiados, 18 (75 %) eran hombres y 6 (25 %) eran menores de cuatro años. La manifestación clínica más frecuente fue el síndrome febril prolongado en 21 (87,5 %) de los pacientes, seguido de esplenomegalia en 17 (70,8 %). Se identificó la especie Leishmania infantum en todos los pacientes estudiados. Conclusión. Este hallazgo constituye la primera identificación de la especie L. infantum en pacientes autóctonos de la provincia de Misiones. El estudio evidenció la importancia de la PCR para el manejo epidemiológico de la leishmaniosis visceral en Argentina

Muito tempo sem ver: Expansão dos registros de Loxosceles amazonica (Araneae: Sicariidae) para o estado do Amazonas, Brasil

Spiders of the genus Loxosceles, commonly known as brown recluse spiders, can cause serious accidents in humans. Their venom has a powerful proteolytic and hemolytic action. Each year these spiders are the cause of a great number of araneism in Brazil. This work presents new records of Loxosceles amazonica for the municipal districts of Manaus and Iranduba, Amazonas, Brazil.As aranhas do gênero Loxosceles, conhecidas como aranhas marrons, podem causar sérios acidentes em humanos. O veneno destas aranhas possui potente ação proteolítica e hemolítica. A cada ano estas aranhas são responsáveis pelo maior número de araneísmos no Brasil. Este trabalho apresenta novos registros de Loxosceles amazonica para o estado do Amazonas, Brasil

Primera caracterización molecular de Leishmania infantum en pacientes con leishmaniosis visceral de la Provincia de Misiones, Argentina

Introduction: Cutaneous leishmaniasis caused by L. braziliensis has been historically endemic in Argentina and several cases of visceral leishmaniasis following initial cutaneous leishmaniasis have been reported. Visceral leishmaniasis started to appear in Argentina in 2006 in the city of Posadas, Misiones province, affecting both humans and dogs.Objective: To identify the etiologic agent to species level in patients with visceral leishmaniasis diagnosis in Misiones province and describe its clinical and epidemiological characteristics.Materials and methods: A cohort of 24 patients from Misiones province was studied from 2009 to 2016, all with a confirmed diagnosis of visceral leishmaniasis. To identify the Leishmania species involved, patient samples were analyzed by microscopy, serologic studies, DNA detection, and sequencing. Variables such as age, sex, place of residence, clinical signs and symptoms consistent with visceral leishmaniasis were also recorded.Results: 75% (18/24) of the patients studied were males and 25% (6/24) were younger than 4 years. The most frequent symptom was a prolonged fever in 87.5% of the patients (21/24), followed by splenomegaly in 70.8% (17/24). Leishmania infantum was the only parasite species identified in all patients.Conclusion: This finding constitutes the first molecular identification of the Leishmania infantum species in autochthonous patients of Misiones province, Argentina. This study highlights the importance of PCR for species identification in epidemiological studies of visceral leishmaniosis in Argentina.Introducción. La leishmaniosis cutánea por Leishmania braziliensis ha sido tradicionalmente endémica en Argentina y se han sido descritos casos de compromiso visceral después de una leishmaniosis cutánea inicial. La leishmaniosis visceral emergió en Argentina en el año 2006 en la ciudad de Posadas, provincia de Misiones, afectando tanto a humanos como a perros.Objetivo. Identificar el agente etiológico a nivel de especie de los pacientes diagnosticados con leishmaniosis visceral en Misiones y describir sus características clínicoepidemiológicas.Materiales y métodos. Se estudió una serie de 24 pacientes con diagnóstico confirmado de leishmaniosis visceral en la provincia de Misiones en el período 2009 al 2016. Para la identificación de Leishmania spp., los pacientes fueron sometidos a estudios diagnósticos indirectos (serológicos) y directos (microscopía, detección de ADN y secuenciación). También, se estudiaron variables como edad, sexo, lugar de residencia, y signos y síntomas clínicos indicativos de leishmaniosis visceral.Resultados. De los 24 pacientes estudiados, 18 (75 %) eran hombres y 6 (25 %) eran menores de cuatro años. La manifestación clínica más frecuente fue el síndrome febril prolongado en 21 (87,5 %) de los pacientes, seguido de esplenomegalia en 17 (70,8 %). Se identificó la especie Leishmania infantum en todos los pacientes estudiados.Conclusión. Este hallazgo constituye la primera identificación de la especie L. infantum en pacientes autóctonos de la provincia de Misiones. El estudio evidenció la importancia de la PCR para el manejo epidemiológico de la leishmaniosis visceral en Argentina

Homophobia and heteronormativity as dimensions of stigma that influence sexual risk behaviors among men who have sex with men (MSM) and women (MSMW) in Lima, Peru: a mixed-methods analysis

Background Stigma differentially influences HIV and STI care among MSM, especially regarding partner notification practices. Recognizing the heterogeneous behaviors/identities within the category “MSM,” we used mixed-methods to assess sexual risk behaviors among men who have sex with men only (MSMO) and behaviorally bisexual MSM (MSMW) with HIV and/or other STIs. Methods MSMO/MSMW recently diagnosed (< 30 days) with HIV, syphilis, urethritis, or proctitis completed a cross-sectional survey assessing sexual risk behaviors, anticipated disclosure, and sexual partnership characteristics (n = 332). Multivariable generalized estimating equation models assessed characteristics associated with female compared to male partners in the last three partnerships. Follow-up qualitative interviews (n = 30) probed partner-specific experiences (e.g., acts and disclosure). Results Among all participants, 13.9% (n = 46) described at least one of their last three sex partners as female (MSMW). MSMW (mean age of 31.8) reported a mean of 3.5 partners (SD = 4.5) in the past 3 months and MSMO (mean age 30.6) reported a mean of 4.6 partners (SD = 9.7) in the past 3 months. MSMW were more likely to report unprotected insertive anal sex (77.9%) than MSMO (43.1%; p < 0.01). Cisgender female partners were associated with condomless insertive sex in the last 3 months (aPR: 3.97, 95%CI: 1.98–8.00) and classification as a “primary” partnership (2.10, 1.34–3.31), and with lower prevalence of recent HIV diagnosis (0.26, 0.11–0.61). Planned notification of HIV/STI diagnoses was less common for female than for male partners (0.52, 0.31–0.85). Narratives illustrate internal (e.g., women as ‘true’ partners) and community-level processes (e.g., discrimination due to exposure of same-sex behavior) that position homosexual behavior and bisexual identity as divergent processes of deviance and generate vulnerability within sexual networks. Conclusions MSMW recently diagnosed with HIV/STI in Peru report varying partnership characteristics, with different partner-specific risk contexts and prevention needs. Descriptions highlight how behaviorally bisexual partnerships cut across traditional risk group boundaries and suggest that HIV/STI prevention strategies must address diverse, partnership-specific risks