Close-Range Thermography and Reflectance Spectroscopy Support In Vitro and In Vivo Characterization of Colletotrichum spp. Isolates from Mango Fruits.

Colletotrichum causing anthracnose in mango is known for its variable virulence that may have an effect on disease development and efficacy of management strategies. In this study, we characterized Colletotrichum spp. isolated from mango fruits under in vitro and in vivo conditions using close-range thermography and reflectance spectroscopy. Twenty-six isolates were phylogenetically characterized to ascertain species using the internal transcribed spacer sequence. Virulence, spectral (in vivo and in vitro), and thermographic responses (in vivo) of these isolates were analyzed. Isolates were grouped into the Colletotrichum gloeosporioides species complex and classified into eight morphotypes. Mycelial growth, conidia production, sporulation abundance, and area under disease progress curve (AUDPC) varied largely among isolates. Disease symptoms were observed 4 days after inoculation (dai), and, for most morphotypes, changes in tissue temperature were registered at 11 dai, with the greatest decrease at 14 dai with pathogen sporulation. In vitro and in vivo morphotypes shared changes in the spectrum range, and main variations were found in the number of informative spectral bands. In vivo average gross reflectance was higher in disease-inoculated tissue than in healthy uninoculated tissue. Morphotype responses varied depending on AUDPC values and postinoculation time. Discriminant analysis of the spectral response using principal component analysis and partial least squares regression explained 94 to 96.3 and 98 to 99.9% of the variance from in vitro and in vivo tests, respectively. Spectral markers were obtained for four distinct morphotype groups. We found three (550 to 650, 650.1 to 790, and 1,300 to 1,400 nm) and two (520 to 830 and 1,100 to 1,450 nm) regions with highly (P < 0.05) discriminant spectral bands for diseased fruits and morphotype characterization.

Physiological Response of Cape Gooseberry Plants to Fusarium oxysporum f. sp. physali, Fusaric Acid, and Water Deficit in a Hydrophonic System.

Cape gooseberry production has been limited by vascular wilt caused by Fusarium oxysporum f. sp. physali (Foph). Fusaric acid (FA) is a mycotoxin produced by many Fusarium species such as F. oxysporum formae speciales. The effects of the interaction between this mycotoxin and plants (such as cape gooseberry) under biotic stress (water deficit, WD) have been little explored. Three experiments were carried out. The objectives of this study were to evaluate (i) different Foph inoculum densities (1 × 104 and 1 × 106 conidia ml-1; experiment (1); (ii) the effect of times of exposure (0, 6, 9, and 12 h) and FA concentrations (0, 12.5, 25, 50, and 100 mg L-1; experiment (2), and (iii) the interaction between Foph (1 × 104 conidia mL-1) or FA (25 mg L-1 × 9 h), and WD conditions (experiment 3) on the physiological (plant growth, leaf stomatal conductance (g s ), and photochemical efficiency of PSII (Fv/Fm ratio) and biochemical [malondialdehyde (MDA) and proline] responses of cape gooseberry seedling ecotype Colombia. The first experiment showed that Foph inoculum density of 1 × 106 conidia ml-1 caused the highest incidence of the disease (100%). In the second experiment, g s (~40.6 mmol m-2 s-1) and Fv/Fm ratio (~0.59) decreased, whereas MDA (~9.8 µmol g-1 FW) increased in plants with exposure times of 9 and 12 h and an FA concentration of 100 mg L-1 compared with plants without FA exposure or concentrations (169.8 mmol m-2 s-1, 0.8, and 7.2 µmol g-1 FW for g s , Fv/Fm ratio and MDA, respectively). In the last experiment, the interaction between Foph or FA and WD promoted a higher area under the disease progress curve (AUDPC) (Foph × WD = 44.5 and FA × WD = 37) and lower g s (Foph × WD = 6.2 mmol m-2 s-1 and FA × WD = 9.5 mmol m-2 s-1) compared with plants without any interaction. This research could be considered as a new approach for the rapid scanning of responses to the effects of FA, Foph, and WD stress not only on cape gooseberry plants but also on other species from the Solanaceae family.

Dengue Virus Induces the Expression and Release of Endocan from Endothelial Cells by an NS1-TLR4-Dependent Mechanism.

A common hallmark of dengue infections is the dysfunction of the vascular endothelium induced by different biological mechanisms. In this paper, we studied the role of recombinant NS1 proteins representing the four dengue serotypes, and their role in promoting the expression and release of endocan, which is a highly specific biomarker of endothelial cell activation. We evaluated mRNA expression and the levels of endocan protein in vitro following the stimulation of HUVEC and HMEC-1 cell lines with recombinant NS1 proteins. NS1 proteins increase endocan mRNA expression 48 h post-activation in both endothelial cell lines. Endocan mRNA expression levels were higher in HUVEC and HMEC-1 cells stimulated with NS1 proteins than in non-stimulated cells (p < 0.05). A two-fold to three-fold increase in endocan protein release was observed after the stimulation of HUVECs or HMEC-1 cells with NS1 proteins compared with that in non-stimulated cells (p < 0.05). The blockade of Toll-like receptor 4 (TLR-4) signaling on HMEC-1 cells with an antagonistic antibody prevented NS1-dependent endocan production. Dengue-infected patients showed elevated serum endocan levels (≥30 ng/mL) during early dengue infection. High endocan serum levels were associated with laboratory abnormalities, such as lymphopenia and thrombocytopenia, and are associated with the presence of NS1 in the serum.

The Prevalence of Anti-Zein Antibodies: A Comparative Study between Celiac Disease and Irritable Bowel Syndrome.

Celiac disease (CD) is a chronic immune-mediated enteropathy triggered by exposure to dietary gluten in genetically predisposed individuals. In contrast, irritable bowel syndrome (IBS) is a common functional gastrointestinal disorder affecting the large intestine, without an autoimmune component. Here, we evaluated the prevalence of IgA and IgG antibodies to maize zeins (AZA) in patients with CD and IBS. Using an in-house ELISA assay, the IgA and IgG anti-zein antibodies in the serum of 37 newly diagnosed CD (16 biopsy proved and 21 serological diagnosis) and 375 IBS patients or 302 healthy control (HC) subjects were measured. Elevated levels of IgA AZA were found in CD patients compared with IBS patients (p < 0.01) and HC (p < 0.05). CD patients had the highest prevalence (35.1%), followed by IBS (4.3%) and HCs (2.3%) (p < 0.0001). IgG AZA antibodies were not found in any CD patients, IBS patients, or HC subjects. A significant positive correlation was found between IgA AZA with IgA anti-gliadin (AGA, r = 0.34, p < 0.01) and IgA anti-deaminated gliadin peptides (DGP, r = 0.42, p < 0.001) in the celiac disease group. Taken together, our results show for the first time a higher prevalence of AZA IgA antibodies in newly diagnosed CD patients than in IBS patients, confirming a biased immune response to other gliadin-related prolamins such as maize zeins in genetically susceptible individuals.

Characterization of the IL-17 and CD4+ Th17 Cells in the Clinical Course of Dengue Virus Infections.

The aims of this study were to determine the involvement of interleukin 17 (IL-17) and IL-17-producing cells in dengue pathogenesis. Blood samples from dengue virus (DENV)-infected patients were collected on different days after the onset of symptoms. Patients were classified according to 1997 World Health Organization guidelines. Our study examined 152 blood samples from dengue fever (DF, n = 109) and dengue hemorrhagic fever (DHF, n = 43) patients and 90 blood samples from healthy controls (HC). High serum concentrations of IL-17A and IL-22 were also associated with DHF (IL-17A [DHF vs. DF, p < 0.01; DHF vs. HC, p < 0.0001]; IL-22 [DHF vs. DF, p < 0.05; DHF vs. HC, p < 0.0001]). Moreover, there was a positive correlation between serum levels of IL-17A and IL-23, a key cytokine that promotes IL-17-based immune responses (r = 0.4089, p < 0.0001). Consistent with the IL-17-biased immune response in DHF patients, we performed ex vivo activation of peripheral blood mononuclear cells (PBMCs) from DHF patients and flow cytometry analysis showed a robust IL-17-biased immune response, characterized by a high frequency of CD4+IL-17+ producing cells. Our results suggests IL-17-producing cells and their related cytokines can play a prominent role in this viral disease.

Ecología poblacional de Cittarium pica (Gastropoda: Trochidae) de San Andrés Isla, Reserva Internacional de Biósfera, Seaflower / Population ecology of Cittarium pica (Gastropoda: Trochidae) of San Andrés Island, International Biosphere Reserve, Seaflower

Resumen Cittarium pica es un gasterópodo conspicuo de los litorales rocosos del Caribe. Dada su importancia en la dieta de las comunidades del Caribe, éste ha sido sobrexplotado, incluso en algunos lugares se ha extinguido, por lo cual algunos países lo han incluido dentro de la lista roja de invertebrados marinos. En la isla de San Andrés Colombia la pesca es artesanal y no tiene regulaciones, conllevando a una disminución de su población. Teniendo en cuenta la importancia socioeconómica, cultural y ecológica de C. pica, así como su grado de vulnerabilidad a la extinción, es urgente desarrollar acciones de manejo que incrementen la resiliencia de la especie y el sostenimiento del recurso. Para evaluar el estado de la población de C. pica de la isla, se estimó la estructura por talla y por sexo, talla de maduración, y los parámetros de crecimiento a partir del análisis de datos de frecuencia de tallas. De septiembre a diciembre 2013 y de enero a marzo 2014, se recolectaron al azar 458 ejemplares en ocho estaciones representativas del litoral rocoso de la isla. Se midió el diámetro de la base de la concha, se determinó el sexo y el tamaño mínimo de maduración. El 80 % de la población consistió de individuos pequeños < 25.5 mm. La proporción de sexos fue de 1:1, excepto en noviembre y el tamaño mínimo de inicio de la madurez para sexos combinados fue de 14.07 mm. Los parámetros de von Bertalanffy K (0.730 año-1), L∞ (110.78 mm) y Φ (3.95) son mayores respecto a otras poblaciones del Caribe. La mortalidad total fue de 3.39 año-1, la mortalidad natural y por pesca fue de 1.02 año-1 y 2.36 año-1, respectivamente. El máximo reclutamiento se estimó para junio y la tasa de explotación máxima entre 0.563 y 0.640, para tamaños de captura de 40 y 50 mm. La tasa de explotación se estimó en 0.70, lo que sugiere una fuerte presión sobre el recurso. Por lo anterior, se recomienda vedar por completo la captura manual de C. pica hasta que un monitoreo evidencie que la población se recupera en la isla.

Abstract Cittarium pica is a conspicuous gastropod of the rocky coastlines of the Caribbean. Given its importance in the diet of Caribbean communities, it has been over-exploited, even reaching extinction in some places, and the species has been included in the red lists of marine invertebrates in some countries. Its fishery in San Andres Island-Colombia is artisanal without any regulation, leading to a decrease in its population. Taking into account the socio-economic, cultural and ecological importance of C. pica and its vulnerability to extinction, it is urgent to develop management actions directed to increase the resilience of the species and its sustainability as a fishery resource. To assess the current population state of C. pica from San Andrés Island, we estimated size structure, sex structure, maturation size, and growth parameters, based on length-frequency data analysis. From September to December 2013, and January to March 2014, we randomly collected 458 individuals at eight representative sites of the rocky shores of the island. We measured the longest diameter of the shell base, determined the sex by the color of the gonad, and thus determined the minimum maturation size. We found, that 80 % of the population consisted of small individuals < 25.5 mm sizes. The sex ratio was 1:1 except in November, where males were more abundant. The minimum size at the beginning of maturity for both sexes was 14.07 mm. The growth parameters of von Bertalanffy: K (0.730 yr-1), L∞ (110.78 mm) and Φ (3.95) were higher when compared to other populations of the Caribbean. The total mortality was 3.39 yr-1, while natural and fishing mortalities were 1.02 yr-1 and 2.36 yr-1, respectively. The maximum annual recruitment pulse was estimated for June, and the maximum exploitation rate for a sustainable yield was between 0.563 and 0.640, when the catch size was greater than 40 mm or 50 mm, respectively. The exploitation rate was estimated in 0.70, suggesting a strong extractive resource pressure. With these results we recommend the closure of the fishery and constant monitoring to promote and the population recovery is verified. Until a monitoring shows that the population recovers on the island.

Salud mental y calidad de sueño en estudiantes de ocho facultades de medicina humana del Perú / Mental health and quality of sleep from eight faculties of medical students in Peru

Introduction: The quality of sleep refers to the fact that we sleep well at night and daytime functioning. Thus, influences health and quality of life. Sleep loss is one of the most striking problem of modern society especially in medical students. This is related to the constant academic demands causing mental health problems and high levels of stress. Methods: A cross-sectional study. We evaluated 1,040 medical students in 8 universities of Peru from the first to the sixth year of study. Of these, 892 surveys were used. Mental health were evaluated according to the scale of Depression, Anxiety and Stress (DASS-21) and "poor sleepers" students were established with a score > 5 according to the Pittsburgh Sleep Quality Index (PSQI). Results: It was found that 693 (77.69%) students were poor sleepers. About mental health was found that 290 (32.51%) suffered from depression, 472 (52.91%) of anxiety and 309 (34.64%) stress. A significant association (p < 0.05) was found between poor sleep quality and female sex (OR = 1.13, CI = 1.05 to 1.21); depression (OR = 1.23, CI = 1,15-1,31); anxiety (OR = 1.32, CI = 1.23 to 1.43); and stress (OR = 1.26, CI = 1.19 to 1.35). Conclusion: We observed a high frequency of poor sleepers in medical students from eight universities of Peru. The poor quality of sleep was associated with anxiety, depression and stress in students of second and third year, respectively.

Introducción: La calidad de sueño nos hace referencia al hecho de dormir bien durante la noche y el rendimiento diurno. De esa forma, influye en salud y la buena calidad de vida. La pérdida de sueño es uno de los problemas de la sociedad moderna más llamativos especialmente en estudiantes de medicina humana. Esto se relaciona a la constante y creciente exigencia académica ocasionando problemas de salud mental y altos niveles de estrés. Métodos: Estudio transversal analítico. Se evaluaron 1.040 estudiantes de medicina humana obtenidos en forma equitativa de 8 universidades del Perú desde el primer al sexto año de estudios. De ellos, se usaron 892 encuestas. Se evaluó la salud mental según la escala de Depresión, Ansiedad y Estrés (DASS-21) y se estableció a los estudiantes "malos dormidores" como aquellos con una puntuación > 5 según el índice de calidad de sueño de Pittsburgh (ICSP). Resultados: Se encontró que 693 (77,69%) alumnos fueron malos dormidores. Con respecto a la salud mental se halló que 290 (32,51%) sufrían de depresión, 472 (52,91%) de ansiedad y 309 (34,64%) de estrés. Se halló asociación significativa (p < 0,05) entre la mala calidad de sueño y el sexo femenino (RP = 1,13; IC = 1,051,21); depresión (RP = 1,23; IC = 1,15-1,31); ansiedad (RP = 1,32; IC = 1,23-1,43); y estrés (RP = 1,26; IC = 1,19-1,35). Conclusión: Se observa una frecuencia elevada de malos dormidores en estudiantes de medicina de ocho universidades del Perú. La mala calidad de sueño se asoció con la ansiedad, depresión y estrés en los estudiantes de segundo y tercer año, respectivamente.

La atención a los pacientes en los servicios de salud para poblaciones indígenas / The attention to patients in health services for indigenous populations

Las poblaciones indígenas de Latinoamerica requieren la atención de sus problemas de salud en el contexto de su manera de vivir y cultura. Ofrecemos el fundamento teórico de los cofactores por considerar, para ofrecer atención y tratamiento a los problemas de salud en dichas situaciones, así como sugerencias concretas para la mejora de los servicios. (AU)

La atención del personal de salud al paciente en situaciones interculturales / The health care staff to the patient in intercultural situations

Las diferentes actitudes, valores y conocimientos que tanto el personal de salud como sus pacientes tienen sobre la naturaleza de las diferencias interculturales deben generar conductas específicas y evaluables, que llevarán a la mejoría de la calidad y calidez de los servicios, evaluadas ya sea mediante los criterios de la administración científica.

Datos antropométricos para el diseño de mobiliario de prescolares / Anthropometric data for the design of furniture for preschool children

Investigación basada en las mediciones antropológicas de 278 niños (130 mujeres y 148 varones) asistentes a la guardería infantil (CENDIS) de la Universidad Nacional Autónoma de México (UNAM), ubicada en la Ciudad Universitaria. Se determinó, en primer lugar, la estatura de los menores allí albergados; en seguida, se efectuaron mediciones que permitieran determinar los siguientes puntos: la altura del asiento desde el piso, su inclinación óptima en relación con el plano horizontal, además de la anchura, profundidad anteroposterior, altura y anchura del respaldo, así como la altura de la superficie de trabajo de la mesa, todo ello en relación con las características antropométricas de los niños que quedaron ubicadas en tres grupos que ameritan tres modelos de mobiliario

Merolicos y educacion de salud. / Merolicos and health education

Los merolicos que venden preparados medicinales ofreciendo un espectaculo en la via publica, se valen de tecnicas que un desde la ventriloquia hasta el espectaculo comico para vender sus productos. Las investigaciones que a continuacion se describe indica hasta que punto los merolicos son comunicadores efectivos y que importante contribucion pueden aportar a los actuales esfuerzos de educacion en el campo de la salud publica