Pesquisa | SciELO

Resumen Introducción: El vitiligo es incurable, lentamente progresivo, su prevalencia varía de 0.4 a 2.0 %. La calidad de vida relacionada con la salud (CVRS) se refiere al bienestar autopercibido asociado a la presencia de una enfermedad y su tratamiento. Métodos: Estudio transversal en un centro dermatológico. Se incluyeron adultos con vitiligo no segmentario (VNS), en tanto que se excluyeron pacientes con otros trastornos pigmentarios y otros tipos de vitiligo. Se aplicó el cuestionario VitiQoL (0 = sin afectación, 90 = máxima afectación), el Vitiligo Extent Score (VES) y el Vitiligo Area Scoring Index (VASI). Resultados: Participaron 492 pacientes, 63 % mujeres. Se obtuvieron 32.6 puntos de promedio en el VitiQoL (IC 95 % = 30.6-34.5). La autopercepción de gravedad y la CVRS se correlacionaron (r = 0.568, p < 0.001). La edad, el sexo femenino, la menor educación y la mayor gravedad autopercibida se asociaron a peor CVRS. La proporción de personas que reportaron una adicción fue similar en los grupos con peor y mejor CVRS (28 % versus 32 %, p = 0.23). Conclusión: La peor CVRS se explica por la autopercepción de gravedad, preocupación por la progresión de la enfermedad, aspecto de la piel y acciones necesarias para evitar la exposición al sol durante la recreación.

Abstract Introduction: Vitiligo is an incurable, slowly progressive skin condition, the prevalence of which ranges from 0.4 to 2.0%. Health-related quality of life (HRQoL) refers to self-perceived well-being associated with the presence of a disease and its treatment. Methods: Cross-sectional study at a dermatological center. Adults with non-segmental vitiligo (NSV) were included, while patients with other pigmentary disorders and other types of vitiligo were excluded. The VitiQoL questionnaire (0 = no skin involvement, 90 = maximum skin involvement), the Vitiligo Extent Score (VES) and the Vitiligo Area Scoring Index (VASI) were applied. Results: 492 patients did participate; 63% were women. An average score of 32.6 was obtained on VitiQoL (95% CI = 30.6-34.5). Self-perception of severity and HRQoL were correlated (r = 0.568, p < 0.001). Age, the female gender, lower education and higher self-perceived severity were associated with poorer HRQoL. The proportion of subjects who reported an addiction was similar in the worst and best HRQoL groups (28% vs. 32%, p = 0.23). Conclusion: Poorer HRQoL is explained by severity self-perception, concern about disease progression, appearance of the skin and necessary actions to avoid sun exposure during recreation.

https://doi.org/10.24875/gmm.22000120

Familias de médicos en la Academia Nacional de Medicina de México
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Marín-López, Antonio

; García-Villaseñor, Elizabeth

; Bojalil-Álvarez, Lorena

; Murrieta-Álvarez, Iván

; Cantero-Fortiz, Yahveth

; Viesca-Treviño, Carlos A.

; Sánchez-Anzaldo, Francisco J.

; Ruiz-Argüelles, Guillermo J.

Gaceta médica de México

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Jun 2022, Volume 158 Nº 3 Páginas 170 - 176

Resumo: Es En | Texto: Es En | PDF: Es | PDF: En

Resumen Introducción: La decisión de involucrarse en el estudio y la práctica de la medicina no es fácil. Dentro del ambiente científico, alcanzar el éxito tanto profesional como personal requiere de una disciplina estricta en donde el esfuerzo se vuelve parte esencial de la vida diaria, además, el tener el apoyo familiar se vuelve un pilar para no perder la ilusión ante las distintas adversidades que se presentan en la formación médica. Objetivo: Identificar a las familias donde mínimo dos miembros pertenecen a la Academia Nacional de Medicina. Métodos: Se llevó a cabo un estudio transversal para analizar las familias de médicos mexicanos en las que por lo menos dos miembros, consanguíneos o políticos, han sido o son miembros de la Academia Nacional de Medicina de México por medio de la consulta del Directorio de la Academia Nacional de Medicina del año 2017 y el contacto de manera personal con los distintos académicos. Resultados: Se recolectó información de 45 familias pertenecientes a la Academia Nacional de Medicina de México. Conclusiones: A partir de este estudio es posible evidenciar la gran influencia que emiten algunos médicos en su entorno familiar, que hace que el estudio de la medicina sea atractivo como proyecto de vida.

Abstract Introduction: The decision to get involved in the study and practice of medicine is not easy. Within the scientific environment, achieving both professional and personal success requires a strict discipline, where effort becomes an essential part of daily life; in addition, having family support becomes crucial in order for not to lose hope when confronting the different adversities that arise during medical training. Objective: To identify members where at least two members belong to the Academia Nacional de Medicina de México” (ANMM). Methods: A cross-sectional study was carried out to identify families of Mexican doctors where at least two members, consanguineous or in-laws, have been or are ANMM members of the through a review of 2017 ANMM Directory personal contact with the different academics. Results: Information on 45 families belonging to the ANMM was collected. Conclusions: From this study, it is possible to show the great influence that some doctors have in their family environment, wich makes the study of medicine attractive as a life project.

https://doi.org/10.24875/gmm.21000476 23 downloads

Focused nutrition during oestrus synchronization in Pelibuey ewes with different body conditions
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Hernández-Marín, J.A.

; Pérez-Hernández, P.

; Cortez-Romero, C.

; Pro-Martínez, A.

; Gallegos-Sánchez, J.

South African Journal of Animal Science

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

2022, Volume 52 Nº 4 Páginas 492 - 497

Resumo: En | Texto: En | PDF: En

The aim of this study was to evaluate ovarian follicular activity, ovulation percentage, and body weight change in response to focused nutrition during synchronization of oestrus with an intravaginal device (CIDR®) (9 days) in Pelibuey ewes with high and low body condition. Seventy-two non-pregnant ewes without offspring were randomly distributed to one of four treatments, namely T1: (n = 18) ewes without focused nutrition and low body condition; T2: (n = 18) ewes without focused nutrition and high body condition; T3: (n = 18) ewes with focused nutrition and low body condition; and T4: (n = 18) ewes with focused nutrition and high body condition. While the CIDR device was in place, the ewes with focused nutrition received a supplement of 1.5 kg ewe/day, which contained 2.9 MCal metabolizable energy, 16% crude protein, 88.5% dry matter, 11.8% crude fibre, and 6.7% of ash. The concentration of progesterone (P4) was measured to determine ovulation percentage. The follicular population was quantified (2-3 mm, 4-5 mm, and >6 mm in diameter). The number of follicles between 2-3 mm and 4-5 mm in diameter was similar among treatments. The number of follicles >6 mm in diameter was higher in T4 ewes (2.2 ± 0.2) compared with T1, T2, and T3. The response to oestrus, the onset of oestrus, and the ovulation percentage were similar among treatments. Focused nutrition increased the number of ovarian follicles >6 mm in diameter in ewes with high body condition.

https://doi.org/10.4314/sajas.v52i4.09

Antioxidant capacity, reproductive response and glucose concentration and insulin of ewes supplemented prior to insemination with orange residue
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Rodríguez-Magadán, H.M.

; Salinas-Rios, T.

; Hernández-Bautista, J.

; Cadena-Villegas, S.

; Pérez, J. Herrera-

; Nieto-Aquino, R.

; Marín-Sánchez, J.

Arquivo Brasileiro de Medicina Veterinária e Zootecnia

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Dez 2021, Volume 73 Nº 6 Páginas 1301 - 1308

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

RESUMO O objetivo deste estudo foi avaliar a capacidade antioxidante, a concentração de glicose e insulina e o comportamento reprodutivo de ovelhas suplementadas com resíduo de laranja antes da inseminação. Cinquenta e cinco ovelhas multíparas foram divididas em dois currais e 15 ovelhas sem raça foram mantidas individualmente para se medir o consumo de ração. Duas dietas integrais foram administradas; T0: tratamento controle e T1: dieta com 20% de resíduo de laranja seco. Dias após o início da suplementação, as ovelhas foram sincronizadas. A suplementação foi finalizada antes da inseminação artificial e, em seguida, foi coletada uma amostra de sangue para medir a capacidade antioxidante e a concentração de glicose e insulina. Uma análise de variância foi feita para avaliar o efeito do tratamento sobre a capacidade antioxidante, a glicose e a insulina, e um teste do ji quadrado foi realizado para analisar a resposta ao estro, a porcentagem de gestação e de prolificidade. Dos nove compostos antioxidantes encontrados no resíduo laranja, a hesperidina (7,44%), o ácido clorogênico (0,50%) e o ácido protocatecuico foram os de maior concentração. O consumo alimentar, a resposta ao estro, a porcentagem de gestação, a capacidade antioxidante, a concentração de glicose e a insulina não foram afetados pelo tratamento. Conclui-se que é possível a inclusão de 20% de resíduos de laranja na dieta antes da inseminação em ovelhas.

ABSTRACT The objective was to evaluate the antioxidant capacity, glucose and insulin concentration and reproductive performance of ewes supplemented with orange residue prior to insemination. Fifty-five multiparous ewes were divided into two corrals, and 15 unbred ewes were kept individually to measure feed consumption. Two integral diets were administered; T0: control treatment and T1: with 20% of dry matter of orange residue. Ten days after the start of supplementation, the ewes were synchronized. Supplementation was finalized prior to artificial insemination, then, a blood sample was taken to measure the antioxidant capacity and glucose and insulin concentration. An analysis of variance was made to evaluate the effect of treatment on the antioxidant capacity, glucose and insulin; and to analyze the response to estrus, percentage of gestation and prolificity a ji squared test was performed. Of 9 antioxidant compounds found in the orange residue, hesperidin (7.44%), chlorogenic acid (0.50%) and protocatechuic acid had the highest concentration. Feed intake, estrus response, percentage of gestation, antioxidant capacity, and glucose and insulin concentration were not affected by the treatment. It is concluded that inclusion of 20% of orange residue in the diet prior to insemination in ewes is possible.

https://doi.org/10.1590/1678-4162-12128 1 downloads

Immune characterization of a Colombian family cluster with SARS-CoV-2 infection
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Aguilar-Jiménez, Wbeimar

; Flórez-Álvarez, Lizdany

; Rincón, Daniel S.

; Marín-Palma, Damariz

; Sánchez-Martínez, Alexandra

; Martínez, Jahnnyer

; Zapata, María Isabel

; Loaiza, John D.

; Cárdenas, Constanza

; Guzmán, Fanny

; Velilla, Paula A.

; Taborda, Natalia A.

; Zapata, Wildeman

; Hernández, Juan C.

; Díaz, Francisco J.

; Rugeles, María T.

Biomédica

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Out 2021, Volume 41 Supl. 2 Páginas 86 - 102

Resumo: Es En | Texto: Es En | PDF: Es | PDF: En

Resumen Introducción. Se han descrito diferentes marcadores inmunológicos durante la COVID-19, los cuales persisten incluso después de la convalecencia y se asocian con los estadios clínicos de la infección. Sin embargo, aún son pocos los estudios orientados al análisis exhaustivo de las alteraciones del sistema inmunológico en el curso de la infección. Objetivo. Evaluar la producción de citocinas proinflamatorias, la reacción de anticuerpos, y el fenotipo y la función de las células NK y los linfocitos T en una familia colombiana con infección por SARS-CoV-2. Materiales y métodos. Se evaluaron las citocinas proinflamatorias mediante RT-PCR y ELISA; la frecuencia, el fenotipo y la función de las células NK (en cocultivos con células K562) y linfocitos T CD8+ (estimulados con péptidos spike/RdRp) mediante citometría de flujo, y los anticuerpos anti-SARS-CoV-2, mediante inmunofluorescencia indirecta y prueba de neutralización por reducción de placa. Resultados. Durante la COVID-19 hubo una producción elevada de citocinas proinflamatorias, con disminución de las células NK CD56 bright y reacción citotóxica. Comparados con los controles sanos, los individuos infectados presentaron con gran frecuencia linfocitos T CD8+ disfuncionales CD38+HLA-DR-. Además, en los linfocitos T CD8+ estimulados con péptidos virales, predominó una reacción monofuncional con gran producción de IL-10 durante la fase aguda y una reacción bifuncional caracterizada por la coexpresión de CD107a y granzima B o perforina durante la convalecencia. Conclusión. Aunque la reacción inflamatoria caracteriza la infección por SARS-CoV-2, hay otras alteraciones fenotípicas y funcionales en células NK y linfocitos T CD8+ que podrían asociarse con la progresión de la infección. Se requieren estudios adicionales para entender estas alteraciones y guiar futuras estrategias de inmunoterapia.

Abstract Introduction: Immunological markers have been described during COVID-19 and persist after recovery. These immune markers are associated with clinical features among SARS- CoV-2 infected individuals. Nevertheless, studies reporting a comprehensive analysis of the immune changes occurring during SARS-CoV-2 infection are still limited. Objective: To evaluate the production of proinflammatory cytokines, the antibody response, and the phenotype and function of NK cells and T cells in a Colombian family cluster with SARS-CoV-2 infection. Materials and methods: Proinflammatory cytokines were evaluated by RT-PCR and ELISA. The frequency, phenotype, and function of NK cells (cocultures with K562 cells) and T-cells (stimulated with spike/RdRp peptides) were assessed by flow cytometry. Anti-SARS-CoV-2 antibodies were determined using indirect immunofluorescence and plaque reduction neutralization assay. Results: During COVID-19, we observed a high proinflammatory-cytokine production and a reduced CD56bright-NK cell and cytotoxic response. Compared with healthy controls, infected individuals had a higher frequency of dysfunctional CD8+ T cells CD38+HLA-DR-. During the acute phase, CD8+ T cells stimulated with viral peptides exhibited a monofunctional response characterized by high IL-10 production. However, during recovery, we observed a bifunctional response characterized by the co-expression of CD107a and granzyme B or perforin. Conclusion: Although the proinflammatory response is a hallmark of SARS-CoV-2 infection, other phenotypic and functional alterations in NK cells and CD8+ T cells could be associated with the outcome of COVID-19. However, additional studies are required to understand these alterations and to guide future immunotherapy strategies.

https://doi.org/10.7705/biomedica.5976 26 downloads

Consenso de hemofilia en México
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

López-Arroyo, José L.

; Pérez-Zúñiga, Juan M.

; Merino-Pasaye, Laura E.

; Saavedra-González, Azucena

; Alcivar-Cedeño, Luisa María

; Álvarez-Vera, José Luis

; Anaya-Cuellar, Irene

; Arana-Luna, Luara L.

; Ávila-Castro, David

; Bates-Martín, Ramón A.

; Cesarman-Maus, Gabriela

; Chávez-Aguilar, Lénica A.

; Peña-Celaya, José A. de la

; Espitia-Ríos, María E.

; Estrada-Domínguez, Patricia

; Fermín-Caminero, Denisse

; Flores-Patricio, Willy

; García Chávez, Jaime

; García-Lee, María T.

; González-Pérez, María del Carmen

; González-Rubio, María del Carmen

; González-Villareal, María Guadalupe

; Ramírez-Moreno, Fabiola

; Hernández-Colin, Ana K.

; Hernández-Ruiz, Eleazar

; Herrera-Olivares, Wilfrido

; Leyto-Cruz, Faustino

; Loera-Fragoso, Sergio

; Martínez-Ríos, Annel

; Miranda-Madrazo, María R.

; Morales-Hernández, Alba

; Nava-Villegas, Lorena

; Orellana-Garibay, Juan J.

; Palma-Moreno, Orlando G.

; Paredes-Lozano, Eugenia P.

; Peña-Alcántara, Paula

; Pérez-Lozano, Uendy

; Pichardo-Cepín, Yayra M.

; Reynoso-Pérez, Ana Carolina

; Rodríguez-Serna, Mishel

; Rojas-Castillejos, Flavio

; Romero-Rodelo, Hilda

; Ruíz-Contreras, Josué I.

; Segura-García, Adela

; Silva-Vera, Karina

; Soto-Cisneros, Paulina M.

; Tapia-Enríquez, Ana L.

; Tavera-Rodríguez, Martha G.

; Teomitzi-Sánchez, Óscar

; Tepepa-Flores, Fredy

; Valencia-Rivas, María D.

; Valle-Cárdenas, Teresa

; Varela-Constantino, Ana

; Javier-Morales, Adrián

; Martínez-Ramírez, Mario A.

; Tena-Cano, Sergio

; Terrazas-Marín, Ricardo

; Vilchis-González, Shendel P.

; Villela-Peña, Atenas

; Mena-Zepeda, Verónica

; Alvarado Ibarra, Martha

Gaceta médica de México

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

2021, Volume 157 Supl. 1 Páginas S1 - S37

Resumo: En Es | Texto: En Es | PDF: En | PDF: Es

Abstract Hemophilia is a hemorrhagic disorder with a sex-linked inherited pattern, characterized by an inability to amplify coagulation due to a deficiency in coagulation factor VIII (hemophilia A or classic) or factor IX (hemophilia B). Sequencing of the genes involved in hemophilia has provided a description and record of the main mutations, as well as a correlation with the various degrees of severity. Hemorrhagic manifestations are related to levels of circulating factor, mainly affecting the musculoskeletal system and specifically the large joints (knees, ankles and elbows). This document is a review and consensus of the main genetic aspects of hemophilia, from the inheritance pattern to the concept of women carriers, physiopathology and classification of the disorder, the basic and confirmation studies when hemophilia is suspected, the various treatment regimens based on infusion of the deficient coagulation factor as well as innovative factor-free therapies and recommendations for the management of complications associated with treatment (development of inhibitors and/or transfusion transmitted infections) or secondary to articular hemorrhagic events (hemophilic arthropathy). Finally, relevant reviews of clinical and treatment aspects of hemorrhagic pathology charachterized by acquired deficiency of FVIII secondary to neutralized antibodies named acquired hemophilia.

resumen está disponible en el texto completo

https://doi.org/10.24875/gmm.m20000451 305 downloads

Giraldo, J. (2019). Marx después del marxismo. Medellín: Editorial Universidad de Antioquia
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Sánchez Marín, Leandro

Estudios de Filosofía

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Dez 2020, Nº 62 Páginas 189 - 194

Resumo: Es | Texto: Es | PDF: Es

https://doi.org/10.17533/udea.ef.n62a11 242 downloads

Productive and quality response of six varieties of bell pepper (Capsicum annuum L.) to organic fertilization in Guadalzacar, S.L.P
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

García-Hernández, S. A.

; Marín-Sánchez, J.

; Romero-Méndez, M.

; Hernández-Pérez, C.

; López-Aguirre, S.

Revista bio ciencias

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

2020, Volume 7 elocation e743

Resumo: En Es | Texto: En Es | PDF: En | PDF: Es

ABSTRACT The aim of this work was to evaluate productive and quality response of six commercial varieties of bell pepper (Capsicum annuum L.) to organic fertilization in macrotunnels in the municipality of Guadalcazar, San Luis Potosi, Mexico. In this sense, an experiment was carried out in the period from June to November 2018. Bocashi-like fertilizer, supermagro fertilizer and sulfocalcium broth for pest control were elaborated. Evaluated bell pepper varieties were Revolution F1, Mysterio F1, Karisma F1, Anaconda, Green Noa 214 and Monarcha 30. The evaluated treatments were without fertilization and with organic fertilization, measured variables were the yield in t ha-1 and the percentage of products with specific characteristics for the use of Mexico Supreme Quality label. A randomized complete block design was performed with sub-sampling. All evaluated bell pepper varieties showed higher yields and better quality when organic fertilization was applied. Revolution and Mysterio were the commercial varieties that had the highest productive response (20.5 and 20.3 t ha-1) and more than 85 % of the produced bell peppers met criteria to obtain Mexico Supreme Quality label. Therefore, it was concluded that organic production can be an ecological and profitable alternative for bell peppers production in the municipality of Guadalcáza, San Luis Potosí, México.

RESUMEN La finalidad del presente trabajo fue evaluar la respuesta productiva y calidad de seis variedades comerciales de pimiento morrón (Capsicum annuum L.) a la fertilización orgánica en el Municipio de Guadalcazar, San Luis Potosi, México. En macro túneles. Por lo cual se realizó un experimento en el periodo comprendido de los meses de junio a noviembre del 2018. Se elaboró abono tipo bocashi, fertilizante supermagro y caldo sulfocalcico para control de plagas. Las variedades de pimiento morrón evaluadas fueron Revolution F1, Mysterio F1, Karisma F1, Anaconda, Green Noa 214 y Monarcha 30. Los tratamientos evaluados fueron sin fertilizar y con fertilización orgánica; las variables medidas fueron rendimiento en t ha-1 y porcentaje de productos con características específicas para el uso del distintivo México Calidad Suprema. El diseño estadístico se realizó en bloques al azar con submuestreo. Todas las variedades de pimiento morrón evaluadas mostraron rendimientos mayores y de mejor calidad cuando se les aplicó la fertilización orgánica. Revolution y Mysterio, fueron las variedad comercial que tuvieron la mayor respuesta productiva (20.5 y 20.3 t ha-1), y más del 85 % de pimientos producidos cumplieron con los criterios para obtener el distintivo de México Calidad Suprema. Por lo que, se concluye que la producción orgánica puede ser una alternativa ecológica y rentable para la producción de pimientos en el municipio de Guadalcázar, San Luis Potosí, México.

https://doi.org/10.15741/revbio.07.e743 435 downloads

A spatially explicit model for predicting the probability of occurrence of zero-catch quadrants in the tuna purse seine fishery of the Eastern Tropical Pacific Ocean
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Marín-Enríquez, Emigdio

; Moreno-Sánchez, Xchel G.

; Urcádiz-Cázares, Francisco J.

; Morales-Bojórquez, Enrique

; Ramírez-Pérez, J. Saúl

Ciencias marinas

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

2020, Volume 46 Nº 1 Páginas 19 - 38

Resumo: En Es | Texto: En Es | PDF: En | PDF: Es

ABSTRACT. Null purse seine sets (those in which the catch is zero) are common in every tuna fishery in the world. Current evidence suggests that different environmental factors can influence the occurrence of null sets. In this study, we used a long-term (2003-2015) database from the tuna purse seine fishery in the eastern Pacific Ocean to analyze the temporal and spatial variability of the occurrence of 1º × 1º quadrants where the retained tuna catch was zero (“null cells”). We fitted a logistic generalized additive model to predict the occurrence of null cells as a function of environmental and operational covariates. Results of the modeling process suggested that high probabilities of null cell occurrence exist mainly in 2 environmentally different zones: the entrance to the Gulf of California, Mexico, and off the coast of Central America. The final statistical model suggested that operational variables (number of sets, type of fishing indicator) are more important to null cell occurrence tan environmental factors (sea surface temperature, chlorophyll concentration, sea level anomaly, and El Niño events).

RESUMEN. Los lances nulos (lances en donde la captura retenida es cero) ocurren de manera común en las pesquerías de túnidos alrededor del mundo. La evidencia actual sugiere que existen distintos factores ambientales que pueden influir en la ocurrencia de este tipo de lances. En el presente trabajo se utilizó una base de datos histórica (2003-2015) de la pesquería de túnidos que opera con red de cerco en el Pacífico Tropical Oriental. Se analizó la variabilidad espaciotemporal de la ocurrencia de cuadrantes de 1º × 1º en donde la captura retenida fue cero (“cuadrantes nulos”). Se ajustó un modelo aditivo generalizado logístico para predecir la ocurrencia de los cuadrantes nulos en función de distintas variables ambientales y operacionales. Los resultados sugirieron que existen 2 zonas con alta probabilidad de ocurrencia de cuadrantes nulos, las cuales son muy diferentes desde el punto de vista ambiental: la entrada al golfo de California, México, y frente a la costa de Centroamérica. El modelo estadístico final sugirió que los factores operacionales (número de lances, indicador de pesca) son más importantes para determinar la ocurrencia de cuadrantes nulos que los factores ambientales (temperatura superficial del mar, concentración de clorofila, anomalía del nivel del mar, y eventos El Niño).

https://doi.org/10.7773/cm.v46i1.3026 127 downloads

10.

Análisis de la variabilidad morfológica de maíces nativos y exóticos en valles altos de México
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Velasco-García, Ángela M.

; García-Zavala, J. Jesús

; Sahagún-Castellanos, Jaime

; Lobato-Ortiz, Ricardo

; Sánchez-Abarca, Carlos

; Marín-Montes, Iván M.

Revista fitotecnia mexicana

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

2020, Volume 43 Nº 4a Páginas 517 - 524

Resumo: Es En | Texto: Es En | PDF: Es | PDF: En

Resumen El maíz (Zea mays L.) de origen tropical y subtropical de México es un reservorio de alelos útiles y diferentes a los existentes en razas de valles altos de México, que ayudaría a enfrentar distintos factores adversos y a contribuir a incrementar su adaptabilidad. El objetivo del presente estudio fue identificar la variabilidad morfológica existente entre poblaciones de maíz exóticas, adaptadas y sin adaptación previa a valles altos, y entre algunas de sus cruzas interraciales. El material genético evaluado estuvo integrado por nueve poblaciones originales de maíz exótico y sus ciclos avanzados de selección en valles altos, ocho cruzas simples, dos cruzas dobles, una cruza triple, las generaciones avanzadas de las cruzas y cuatro testigos locales. Las evaluaciones se realizaron en tres ambientes, mediante un diseño de bloques completos al azar con tres repeticiones; la unidad experimental consistió de dos surcos de 6 m de longitud, separados a 0.80 m y con una distancia entre plantas de 0.5 m. Se registraron 28 caracteres cualitativos y cuantitativos. Mediante análisis de componentes principales, agrupamiento jerárquico, análisis discriminante y comparación de medias con la prueba de Tukey se identificaron seis grupos contrastantes. Las variables de estructura morfológica, precocidad de planta y características de mazorca explicaron la variabilidad y agrupación de los genotipos. Las poblaciones exóticas originales fueron de mayor altura, más tardías y disminuyeron su rendimiento en mazorca. En contraste, las poblaciones seleccionadas para adaptación a valles altos mostraron mayor rendimiento en mazorca, menos días a floración, menor altura de planta, más ramas primarias de espiga y mazorcas cónicas. Estos atributos podrían incorporarse en programas de mejoramiento de maíz para valles altos de México o combinarse con el germoplasma local para mejorar su adaptabilidad y su heterosis.

Summary Tropical and subtropical maize (Zea mays L.) native from Mexico is an important source of useful alleles that could be different to those of the germplasm from the mexican high valleys, and that would help avoiding the effects of adverse factors and contributing to increase their adaptability. The aim of this study was to identify the morphological variation between adapted and non-adapted exotic maize populations to high valleys and some of their interracial crosses. The germplasm evaluated was nine original populations of exotic maize and their advanced selection cycles in high valleys, eight single crosses, two double crosses, one triple cross, the advanced generations of the crosses and four local checks. The evaluations were done in three environments under a randomized complete block design with three replicates; the experimental plot had two rows of 6 m, separated to 0.80 m and with 0.5 m between plants. Twenty-eight qualitative and quantitative characters were recorded. Principal component analysis, hierarchical grouping, discriminant analysis and the Tukey’s mean comparison allowed to identify six contrasting groups. Traits of morphological structure, plant earliness and ear characteristics explained the variability and clustering of the genotypes. The original exotic populations increased in height, were late-flowering and decreased their ear yield. In contrast, the selected populations showed higher ear yields, fewer days to flowering, lower plant height, more primary tassel branches and conical ears. These attributes could be incorporated into maize breeding programs for mexican high valleys or combined with the local germplasm to improve their adaptability and heterosis.

https://doi.org/10.35196/rfm.2020.4-a.517

11.

RENDIMIENTO, COMPONENTES DE RENDIMIENTO Y HETEROSIS DE GERMOPLASMA DE MAÍZ ADAPTADO A VALLES ALTOS
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics

Velasco-García, Ángela M.

; García-Zavala, J. Jesús

; Sahagún-Castellanos, Jaime

; Lobato-Ortiz, Ricardo

; Sánchez-Abarca, Carlos

; Marín-Montes, Iván M.

Revista fitotecnia mexicana

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Dez 2019, Volume 42 Nº 4 Páginas 367 - 374

Resumo: En Es | Texto: En Es | PDF: En | PDF: Es

Abstract Varieties of maize (Zea mays L.) introduced from other latitudes are a source of favorable alleles useful in plant breeding, but before being used they must be adapted to the climatic conditions of the target environments. The objective of this study was to evaluate the yield and its components in representative populations of tropical and subtropical maize races adapted by recurrent mass selection to the Mexican highlands, as well as the heterosis of their interracial crosses to identify genotypes useful for maize breeding in those environments. Nine adapted maize populations, eight crosses of two populations, one cross of three populations, advanced generations of the crosses and four commercial checks were evaluated. Genotypes were tested in three environments under a randomized complete blocks design with three replications. Grain yield and its components were recorded. Analysis of variance, comparison of means (Tukey, P ≤ 0.05), correlation analysis were performed and the heterosis was estimated in relation to the mid- parent. There were significant differences (P ≤ 0.01) between genotypes for all the traits; the adapted materials yielded from 3.89 to 11.71 t ha-1 and the checks from 8.06 to 11.56 t ha-1. The yield correlated with the prolificacy index (r = 0.67), ear length (r = 0.64), ear diameter (r = 0.65) and number of grains per row (r = 0.64). The average heterosis for yield and its components ranged from -5.30 to 6.53 %, with 5.68 % for yield, where the F1 P9 × P8 cross showed the highest heterosis (26.19 %). Adapted populations and their crosses showed a performance similar to that of commercial checks; thus, they can be used by themselves or as participants for breeding local maize of highlands.

Resumen Las variedades de maíz (Zea mays L.) introducidas de otras latitudes son una fuente de alelos favorables de utilidad en el mejoramiento genético, pero antes de ser empleados deben adaptarse a las condiciones climáticas de los ambientes de interés. El objetivo del presente estudio fue evaluar el rendimiento y sus componentes en poblaciones representativas de razas de maíz originarias del trópico y subtrópico adaptadas por selección masal recurrente a los Valles Altos de México, así como la heterosis de sus cruzas interraciales para identificar genotipos útiles al mejoramiento genético del maíz para esos ambientes. Se evaluaron nueve poblaciones de maíz adaptado, ocho cruzas de dos poblaciones, una cruza de tres poblaciones, generaciones avanzadas de las cruzas y cuatro testigos comerciales. Los genotipos se evaluaron en tres ambientes bajo un diseño experimental de bloques completos al azar con tres repeticiones. Se registró el rendimiento y sus componentes. Se realizó análisis de varianza, comparación de medias (Tukey, P ≤ 0.05), análisis de correlación y se estimó la heterosis con respecto al progenitor medio. Hubo diferencias significativas (P ≤ 0.01) entre genotipos para todos los caracteres; los materiales adaptados rindieron de 3.89 a 11.71 t ha-1 y los testigos de 8.06 a 11.56 t ha-1. El rendimiento correlacionó con el índice de prolificidad (r = 0.67), longitud (r = 0.64), diámetro de mazorca (r = 0.65) y número de granos por hilera (r = 0.64). La heterosis promedio para rendimiento y sus componentes fluctuó de -5.30 a 6.53 %, con 5.68 % para rendimiento, donde la cruza F1 P9 × P8 presentó la mayor heterosis (26.19 %). Las poblaciones adaptadas y sus cruzas presentaron rendimientos similares a los testigos comerciales; por esto, pueden aprovecharse per se o como participantes para mejoramiento genético del maíz local de Valles Altos.

356 downloads

12.

Complete resolution of dysphagia after sequential Polyflex(tm) stenting in a case of recurrent anastomotic stenosis in an adult with congenital esophageal atresia
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

del-Pozo-García, Andrés J.

; Piedracoba-Cadahia, Carlos

; Sánchez-Gómez, Fernando

; Marín-Gabriel, José Carlos

; Rodríguez-Muñoz, Sarbelio

Revista Española de Enfermedades Digestivas

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Dez 2018, Volume 110 Nº 12 Páginas 826 - 829

Resumo: En | Texto: En | PDF: En

ABSTRACT We present a case of intractable dysphagia in a 23-year-old female with type 1 esophageal atresia (EA) and subsequent postsurgical refractory esophageal strictures. The patient was referred due to increasing symptomatology and a slight response to balloon dilations. A biodegradable polydioxanone stent (ELLA) was placed, but this did not relieve the dysphagia. After the sequential placement of two siliconated polypropylene stents (Polyflex(tm), Boston Scientifics), the dysphagia was definitively relieved. To our knowledge, this is the first published case with a full resolution of dysphagia using this strategy in an adult patient.

https://doi.org/10.17235/reed.2018.5620/2018 105 downloads

13.

"Male effect" and "temporary weaning" in synchronization of post-partum ovarian activity in Pelibuey ewes
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Hernández-Marín, J.A.

; Cortez-Romero, C.

; Herrera-Corredor, C.A.

; Pérez-Hernández, P.

; Pro-Martínez, A.

; Gallegos-Sánchez, J.

South African Journal of Animal Science

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

2018, Volume 48 Nº 4 Páginas 743 - 750

Resumo: En | Texto: En | PDF: En

To evaluate the response of the "male effect" and "temporary weaning" on the synchronization of postpartum ovarian activity in Pelibuey ewes, an experiment was carried out using 78 Pelibuey ewes with suckling lambs. The ewes were separated from their offspring for 48 hours and randomly assigned to one of four treatments derived from the arrangement of two factors, "male effect" and "temporary weaning", each at two levels. Treatments were: T1 (n = 20) control ewes, without "male effect" and without "temporary weaning"); T2 (n = 19) ewes without "male effect" and with "temporary weaning"; T3 (n = 20) ewes with "male effect" and without "temporary weaning"; and T4 (n = 19), ewes with "male effect" and with "temporary weaning". The response to oestrus, return to oestrus, gestation rate and lambing rate were analysed using logistic regression. The onset of oestrus was analysed using survival curves. No significant differences were found for lambing rate and prolificacy among treatments. "Temporary weaning" (T2) and "male effect" (T3) did not influence the response to oestrus, rate and duration of return to oestrus, or gestation rate and fertility, and was similar to the control group (T1). The interaction of "male effect" with "temporary weaning" (T4) increased the response to oestrus, reduced the rate and duration of return to oestrus, and the gestation rate, but increased fertility. Synchronizing post-partum ovarian activity with "male effect" and "temporary weaning" reduces the onset of oestrus and the rate of return to oestrus, but increases the response to oestrus and fecundity in Pelibuey ewes.

https://doi.org/10.4314/sajas.v48i4.16 354 downloads

14.

Meningioma en gestante afecta de endometriosis profunda. A propósito de un caso
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics

Pérez Buendía, J.

; Marín Sánchez, M.P.

; Moreno Sánchez, C.

; Ibarra Vilar, P.

; Nieto Meca, L.

; Nieto Díaz, A.

Revista chilena de obstetricia y ginecología

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

2018, Volume 83 Nº 6 Páginas 614 - 620

Resumo: En Es | Texto: En Es | PDF: En | PDF: Es

ABSTRACT A pregnancy woman affected by deep endometriosis is presented in this clinical case. A cavernous sinus syndrome was diagnosed during her pregnancy. She started suffering from headache and facial hypoesthesia. After a detailed neurological examination and the relevant complementary tests the patient was diagnosed of a meningioma. Given the progressive clinical worsening that was taking place, she had to undergo a cesarean section prior to the therapeutic approach of the tumor. Through this clinical case we will try to approach the possible causes of the association between endometriosis and meningioma, such as the predominantly estrogenic environment of patients with endometriosis. Similarly, we will address the management of meningioma both inside and outside of pregnancy, using the related available literature.

RESUMEN El siguiente caso clínico trata de una paciente, gestante tras fecundación in vitro, afecta de endometriosis profunda. Dicha paciente debutó durante el embarazo con un síndrome del seno cavernoso con cefalea e hipoestesia facial, siendo diagnosticada tras una exploración neurológica detallada y las pruebas complementarias pertinentes de un meningioma. Por este motivo, tuvo que ser sometida a una cesárea previa al abordaje terapéutico del tumor, dado el empeoramiento clínico progresivo que se estaba produciendo. Dado que en la literatura científica la asociación entre la endometriosis y la aparición de meningiomas ya ha sido descrita, con este caso clínico intentaremos acercarnos a las posibles causas de dicha asociación, como podría ser el ambiente predominantemente estrogénico de las pacientes con endometriosis. De igual modo, abordaremos el manejo del meningioma tanto dentro como fuera del embarazo, sirviéndonos para ello de la bibliografía disponible.

933 downloads

15.

Aerotransporte de pacientes con alto riesgo de contaminación por enfermedad infecciosa: a propósito de tres casos
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics

Cantalejo Pérez, F.

; González García, C.

; Seguido Chacón, R.

; Martínez Marín, I.

; Sánchez López, G.

; Couceiro de Miguel, J.

; Peralba Vañó, I.

Sanidad Militar

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Mar 2017, Volume 73 Nº 1 Páginas 46 - 56

Resumo: En Es | Texto: En Es | PDF: En | PDF: Es

Spanish troops deployed on international operations all over African tropical areas can be exposed to high-risk situations due to severe infectious diseases that can affect the population under their responsibility as well as to the possible use of biological weapons in current international conflicts. In this situation the Spanish Unified Defense Medical Command and, in this particular case, the Spanish Unit Medical Evacuation (UMAER) updated their NBC defense procedures since the beginning of these missions of Spanish armed forces in Africa. Initially the response capability to this biological threat was reinforced in these territories, and afterwards training was carried out for the possibility of MEDEVAC missions of patients with infectious diseases in order to receive definitive treatment on national territory. This article is a report of what happened during these missions. It is recognition of all people involved and their efforts.

Las tropas españolas destacadas en operaciones internacionales en áreas tropicales con enfermedades infecciosas emergentes pueden verse en situación de riesgo de contagio, a lo que se suma el potencial uso de armas biológicas en los actuales conflictos de guerra desigual. Este riesgo puede hacerse extensivo a toda la población bajo responsabilidad española. Esta situación hizo que la Sanidad Militar Española y, en el caso que se presenta, la Unidad Médica de Aeroevacuación (UMAER) actualizase sus procedimientos de defensa NBQ en vigor desde el inicio de las misiones de las Fuerzas Armadas en territorio africano. Se reforzó la respuesta a la amenaza biológica en dichos ambientes tropicales y se trabajó y entrenó en la posibilidad de transporte aéreo de pacientes con enfermedades infecciosas transmisibles para su tratamiento definitivo en territorio nacional. Este artículo es un informe de lo sucedido durante estas misiones. Es un reconocimiento a todas las personas involucradas y sus esfuerzos.

2434 downloads

Exibindo

itens por página

Página de 4 Próxima

Selecione um ou mais resultados

Todos Ordem alfabética

Resultados

Gráfico comparativo Download CSV

Visualizar estatísticas de

Enviar resultado

E-mail do(s) destinatários*

Utilize ; (ponto e vírgula) para mais de um e-mail.

Enviar por e-mail

Esta página

Registros selecionados

Todos os registros (max. 300)

Alterar remetente, assunto e comentários

Seu email

Assunto

Comentários

Alterar remetente, assunto e comentários

Exportar resultados

Formato de exportação:

RIS (para EndNote, ProCite, Reference Manager, RefWorks, Citavi, etc.)

BibTeX

Citação

CSV (para Excel, etc)

Exportar:

Esta página

Itens selecionados

Todos os registros (max. 2000)

Mostrar mais

Sem resultados

Não foram encontrados documentos para sua pesquisa

Glossário e ajuda para busca

Você pode enriquecer sua busca de uma forma muito simples. Use os índices de pesquisa combinados com os conectores (AND ou OR) e especifique cada vez mais sua busca.

Por exemplo, se você deseja buscar artigos sobre
casos de dengue no Brasil em 2015, use:
ti:dengue and publication_year:2015 and aff_country:Brasil

Veja abaixo a lista completa de índices de pesquisa que podem ser usados:

Cód. do Índice	Elemento
ti	título do artigo
au	autor
kw	palavras-chave do artigo
subject	assunto (palavras do título, resumo e palavras-chave)
ab	resumo
ta	título abreviado da revista (ex. Cad. Saúde Pública)
journal_title	título completo da revista (ex. Cadernos de Saúde Pública)
la	código do idioma da publicação (ex. pt - Português, es - Espanhol)
type	tipo do documento
pid	identificador da publicação
publication_year	ano de publicação do artigo
sponsor	financiador
aff_country	código do país de afiliação do autor
aff_institution	instituição de afiliação do autor
volume	volume do artigo
issue	número do artigo
elocation	elocation
doi	número DOI
issn	ISSN da revista
in	código da coleção SciELO (ex. scl - Brasil, col - Colômbia)
use_license	código da licença de uso do artigo

SciELO - Scientific Electronic Library Online
Rua Dr. Diogo de Faria, 1087 – 9º andar – Vila Clementino 04037-003 São Paulo/SP - Brasil
Email: scielo@scielo.org

Todo o conteúdo de www.scielo.org, exceto onde está identificado, está licenciado sob uma Licença Creative Commons.
saiba mais »