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Antimicrobial resistance is an important health concern globally, and probiotics are considered an alternative to minimize it. The present study examined the in vitro probiotic characteristics and in vivo immunomodulatory potential of Bacillus sp. 62A - an extremophile bacterium. Bacillus sp. 62A was evaluated in vitro for its cytotoxicity, hemolytic activity, antibiotic susceptibility, and resistance to gastrointestinal conditions (bile salts, low pH, and intestinal adherence). Additionally, the immunomodulatory effect of Bacillus sp. 62A was studied in mice. The animals were supplemented daily with phosphate-buffered saline (control) and Bacillus sp. 62A at 1 × 108 colony forming units (CFU). Samples were taken on days 5 and 10. Isolated splenocytes were challenged with Escherichia coli for immunological analyses and immune-related gene expression. Serum and feces were collected for IgA and IgG determination. Bacillus sp. 62A did not show cytotoxicity, hemolytic activity, or resistance to antibiotics. Furthermore, the bacterium has autoaggregation and intestinal adhesion capacities and grows in the presence of bile salts and low pH. Bacillus supplementation in mice improved respiratory burst activity, nitric oxide production, and IL-1ß and IL-6 gene expressions, mainly at 10 days. After E. coli challenge, Bacillus supplementation in mice induced an anti-inflammatory response through a decrease in immunological parameters and an increase in IL-10 gene expression. Moreover, serum IgA and IgG and fecal IgG augmented in supplemented mice. In conclusion, Bacillus sp. 62A has biosafe and immunomodulatory probiotic potential.
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The dialectical relationship between ecosystems and society is complex; therefore, holistic approaches are required to address this complexity. This view also stands out in the ecosystem services valuation field, where different scholars and global platforms have drawn attention to the need to incorporate plural valuation initiatives at decision-making. In this sense, through a comprehensive design, we conducted a multi-layered valuation of ecosystem services, and we highlighted multiple values in two areas of the province of Caldas, Colombia. We proposed a three-phase valuation process called Recognizing, Normalizing and Articulating values. Then, in cooperation with the regional environmental authority, we obtained different water-related ecosystem services values. Our results showed some warnings: first, we found mismatches between ecosystem services values; second, people assigned high values to ecosystems but the actual capacity of ecosystems to support ES is low. Finally, monetary values were marginal compared to social and ecological values. We conclude by saying that the more strata are assessed, the more values appear in the valuation scenarios, and those values could be conflicting. Our results have political implications, since they highlight the need to incorporate plural values as a fundamental tool for planning and land use in real scenarios where conflicts of interest and values are evident.
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Introducción: La sífilis gestacional continúa sien-do un problema de salud pública en el mundo. Produce severos efectos adversos en la madre y en el feto de no ser tratada. En Chile, el Ministerio de Salud ha establecido un tamizaje para esta infección cada 3 meses en el embarazo y al momento del parto. Un tratamiento adecuado y oportuno es capaz de prevenir todos los efectos adversos de la sífilis en el embarazo. Métodos: Este fue un estudio transversal retrospectivo que incluyó a 406 embarazadas controladas en la Unidad de Atención y Control en Salud Sexual (UNACESS) del Hospital San José (HSJ) entre los años 2010-2016. Resultados: Los resultados del estudio fueron que un 87,7% de las embarazadas eran chilenas y un 12,3% de otras nacionalidades. Las nacionalidades más frecuentes para el grupo de extranjeras fueron: 54% peruanas y 18% haitianas. Al ingreso al estudio, 47,5% de las embarazadas se encontraban en el segundo trimestre de embarazo. De todas las participantes, un 38,7% se encontraba en riesgo de sífilis congénita. Discusión: En total, un 23% de las participantes presentó un falso positivo biológico, cifra similar a la reportada en otros estudios. En este estudio encontramos que, en gestantes extranjeras, había mayor proporción de diagnóstico tardío en que chilenas. Esto podría deberse a dificultades para ingresar a la atención en salud. Conclusión: Pese a que en Chile contamos con buenas tasas de diagnóstico, el manejo de la sífilis gestacional podría ser mejorado con una detección y tratamiento temprano. Las extranjeras buscaron atención en salud más tarde que las chilenas, por lo tanto, recibieron tratamiento más tardío y con mayor riesgo de sífilis congénita. Esto se puede explicar por dificultades para ingresar al sistema de salud.
Introduction: Syphilis in pregnancy remains a global public health problem with severe outcomes if it is not treated properly. The Chilean Ministry of Health has established syphilis screening at three times during pregnancy, with a final retest is during labor. An adequate treatment can prevent all side effects of syphilis in pregnancy. Methods: This was a descriptive, transversal study which included 406 pregnant women who consulted for potential syphilis at the Control and Treatment of Sexual Health Unit (UNACESS in Spanish) of San José Hospital (HSJ) in Santiago, Chile from 2010 to 2016.Results: A 87,7% of the pregnant women were Chilean, while 12,3% had a different nationality. Among immigrants, the most frequent nationalities were: peruvian 54% and Haitian 18%. At enrol-ment, 47,5% of the pregnant women were in their second trimester. 38,4% was at risk of congenital syphilis.Discussion: Overall, 23,1% of the participants had a false positive test, which is congruent with pre-viously reported data. In this study, we found a higher rate of late diagnosis, mainly in the immigrant pregnant women, which could be due to difficulties in accessing healthcare and cultural matters. Conclusion: Despite a high overall treatment rate, antenatal syphilis management in this population could be improved by earlier detection and treatment. Immigrant women sought attention later in pregnancy, thus receiving delayed treatment with higher risk of congenital syphilis. This could be explained by obstacles in their access to healthcare.
Assuntos
Humanos , Feminino , Gravidez , Adolescente , Adulto , Complicações Infecciosas na Gravidez/diagnóstico , Sífilis Congênita/diagnóstico , Sífilis/diagnóstico , Complicações Infecciosas na Gravidez/epidemiologia , Sífilis Congênita/epidemiologia , Sífilis/transmissão , Sífilis/epidemiologia , Chile , Programas de Rastreamento , Estudos Transversais , Estudos Retrospectivos , Distribuição por Idade , Transmissão Vertical de Doenças Infecciosas/estatística & dados numéricos , Reações Falso-Positivas , Emigrantes e Imigrantes/estatística & dados numéricos , Hospitais PúblicosRESUMO
Environmental objectives tend to receive a push to the background in post-conflict scenarios. On the other hand, the processes displacement and refugee's relocation in post-conflict countries have been associated with different environmental impacts. Currently, Colombia faces a post-conflict scenario, which brings about relevant socio-environmental challenges: it is a mega-biodiverse country, it has millions of displaced people and is one of the most inequitable country in the world. Since there is a gap in post-conflict studies regarding the exploration of victims' involvement in environmental strategies, this paper aims to analyze victims' willingness to participate (WP) in Land Recovery Strategies (LRS) in post-conflict Colombia. This research (1) describes the socio-economic characteristics of forced-displacement victims from a Caribbean municipality of Colombia; (2) analyzes the victims' WP in hypothetical LRS and their preferred type of participation in the project, (3) identifies the way of grouping victims according their WP. Finally, (4) it analyzes the kind of benefits victims would prefer to receive in exchange for their participation in the LRS. Our results made evident that the majority of the consulted victims are willing to participate in LRS by giving up manual work time or in exchange of local ecological knowledge. We also found that the victims' participation in LRS associates to the age of the respondents, and whether they have benefited from government programs previously. Victims would prefer monetary retribution in exchange for their involvement in LRS, which may be explained by their vulnerable socioeconomic conditions. This research also demonstrates that victims with positive WP in LRS are a heterogeneous group. We highlight the need of actively involving women in LRS and other post-conflict projects in order to ensure their wellbeing. The results of this research are valuable, because they put forward the population of victims as an active performer within environmental sustainability.
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Conservação dos Recursos Naturais , Refugiados , Região do Caribe , Colômbia , Meio Ambiente , Política Ambiental , HumanosRESUMO
La diversidad de poblaciones microbianas que colonizan de forma permanente o transitoria la piel, depende de la topografía y fisiología de cada zona del cuerpo y cada área provee las condiciones necesarias para el desarrollo de microorganismos simbióticos, inofensivos e incluso beneficiosos, al mismo tiempo que regula las condiciones necesarias para evitar la colonización de agentes perjudiciales o patógenos. Alteraciones en este equilibrio dinámico, pueden causar infecciones locales o generalizadas por la diseminación de la flora normal de un sitio a otro. El proceso evolutivo de la resistencia bacteriana ha sido corto y variable, condicionado en parte, por la presión selectiva ejercida frente a la terapia antimicrobiana. En respuesta, los microorganismos se han adaptado a las condiciones adversas mediante mecanismos de persistencia y resistencia que generan problemáticas a nivel epidemiológico, terapéutico y en la salud pública. El fenómeno de la multiresistencia causa un impacto directo en la morbimortalidad e incrementa los costos en la atención en salud, por lo cual, además del correcto, apropiado y racional uso de los antimicrobianos, se requiere la prevención de las infecciones asociadas a la atención en salud mediante el control de la contaminación ambiental y el lavado de manos. Finalmente, de las bacterias aprendemos que su interacción y organización comunitaria se constituyen en su "verdadera inteligencia" y podríamos morir en el intento de contener su ataque, si seguimos fortaleciendo las armas del "enemigo".
The enormous diversity of microbial populations that colonize the human skin in permanent or temporar way depends on the topography and physiology of each area of the body. Each area of which are harmless and even beneficial. At the same time that regulate the basic conditions to prevent pathogenic bacteria colonization. Alterations in this dynamic equilibrium could spread the normal flora to a different place generating local or systemic infections. After the penicillin discovery for the treatment of infectious disease caused by bacteria, the microorganisms have developed strategies to survive through different mechanisms resulting in potentially ineffective antibiotics. Parallel to bacteria resistance has been the creation hundreds of antibiotics for clinical use. The multi-drug resistance phenomenon has direct impact on morbidity, mortality rates and in the health care, increased cost, thus it is essential to have a correct, appropriate and a rational use of antimicrobials. One key tools to prevent infection, is the environmental pollution control and hand washing, not less important a new approach to the understanding of the pathophysiology, the prevention of spreading using natural products and the creation of innovative molecules such as antimicrobial peptides.