<!--StartFragment--><p><strong>Objetivo</strong> Investigar en una universidad estatal delCaribe colombianoel estado de la salud sexual y reproductiva especialmente conocimientos sobre Enfermedades de Transmisión Sexual (ETS), fertilidad, sexualidad, embarazo y violencia.</p><p><strong>Métodos </strong>Estudio transversal tipo encuesta. Se seleccionaron estudiantes matriculados en el segundo período de 2010 que llenaron voluntariamente la encuesta. Los datos cualitativos fueron tabulados y graficados usando medidas de tendencia central para variables cuantitativas.</p><p><strong>Resultados </strong>La población tenía alrededor de 20 años de edad, provenía de la zona urbana (57,9 %; IC95 %=54,7-61,1), predominantemente heterosexual (89,7 %) con edad de inicio de vida sexual antes de los 18 años, con 11,8 % de promiscuidad que usaba principalmente el preservativo como Método de Planificación Familiar (MPF) (55 %). Aunque poseían información previa sobre salud sexual, MPF y ETS, no se comportaban acorde con ello, por la desinformación sobre formas de transmisión del VIH, bajo nivel de realización de pruebas serológicas para ETS, así como conductas de riesgo (sexo/alcohol/drogas). El 12,3% tuvo antecedente de embarazo, violencia física (21,6%) y sexual (4,6 %) con un predominante silencio de las víctimas de abuso sexual (61,8 %). <strong></strong></p><p class="MsoNormal" style="text-align: justify; line-height: 200%;"><strong>Conclusiones</strong> La muestra refleja la población universitaria de esta región del país.Se planea organizar un programa con apoyo médico y psicológico que permita disminuir los índices de ETS, embarazos no planificados, preparando al adolescente en esta importante etapa de su vida,sirviendo de modelo para otras universidades latinoamericanas. </p><p class="MsoNormal" style="text-align: justify; line-height: 200%;"> </p><p class="MsoNormal" style="text-align: justify; line-height: 200%;"> </p><p class="MsoNormal" style="text-align: justify; line-height: 200%;"> </p><p class="MsoNormal" style="text-align: justify; line-height: 200%;"> </p><!--EndFragment-->
In this study, a family of porphyrins based on 5,10,15,20-Tetrakis(4-ethylphenyl)porphyrin (1, Ph) and six metallo-derivatives (Zn2+(2, Ph-Zn), Sn4+(3, Ph-Sn), Mn2+ (4, Ph-Mn), Ni2+ (5, Ph-Ni), Al3+ (6, Ph-Al), and V3+ (7, Ph-V)) were tested as photosensitizers for photodynamic therapy against Leishmania braziliensis and panamensis. The singlet oxygen quantum yield value (ΦΔ) for (1–7) was measured using 1,3-diphenylisobenzofuran (DPBF) as a singlet oxygen trapping agent and 5,10,15,20-(tetraphenyl)-porphyrin (H2TPP) as a reference standard; besides, parasite viability was estimated by the MTT assay. After metal insertion into the porphyrin core, the ΦΔ increased from 0.76–0.90 and cell viability changed considerably. The ΦΔ and metal type changed the cytotoxic activity. Finally, (2) showed both the highest ΦΔ (0.90) and the best photodynamic activity against the parasites studied (IC50 of 1.2 μM).
Aedes aegypti is the main vector of dengue, chikungunya, and Zika viruses, which are of great public health importance in Colombia. Aedes control strategies in Colombia rely heavily on the use of organophosphate and pyrethroid insecticides, providing constant selection pressure and the emergence of resistant populations. In recent years, insecticide use has increased due to the increased incidence of dengue and recent introductions of chikungunya and Zika. In the present study, pyrethroid resistance was studied across six populations of Ae. aegypti from the Caribbean coast of Colombia. Susceptibility to λ-cyhalothrin, deltamethrin, and permethrin was assessed, and resistance intensity was determined. Activity levels of enzymes associated with resistance were measured, and the frequencies of three kdr alleles (V1016I, F1534C, V410L) were calculated. Results showed variations in pyrethroid susceptibility across Ae. aegypti populations and altered enzyme activity levels were detected. The kdr alleles were detected in all populations, with high variations in frequencies: V1016I (frequency ranging from 0.15-0.70), F1534C (range 0.94-1.00), and V410L (range 0.05-0.72). In assays of phenotyped individuals, associations were observed between the presence of V1016I, F1534C, and V410L alleles and resistance to the evaluated pyrethroids, as well as between the VI 1016 /CC 1534 /VL 410 tri-locus genotype and λ-cyhalothrin and permethrin resistance. The results of the present study contribute to the knowledge of the mechanisms underlying the resistance to key pyrethroids used to control Ae. aegypti along the Caribbean coast of Colombia.
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