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1.
Biology (Basel) ; 13(7)2024 Jul 10.
Artigo em Inglês | MEDLINE | ID: mdl-39056707

RESUMO

Species distribution modeling helps understand how environmental factors influence species distribution, creating profiles to predict presence in unexplored areas and assess ecological impacts. This study examined the habitat use and population ecology of the Chilean dolphin in Seno Skyring, Chilean Patagonia. We used three models-random forest (RF), generalized linear model (GLM), and artificial neural network (ANN)-to predict dolphin distribution based on environmental and biotic data like water temperature, salinity, and fish farm density. Our research has determined that the RF model is the most precise tool for predicting the habitat preferences of Chilean dolphins. The results indicate that these dolphins are primarily located within six kilometers of the coast, strongly correlating with areas featuring numerous fish farms, sheltered waters close to the shore with river inputs, and shallow productive zones. This suggests a potential association between dolphin presence and fish-farming activities. These findings can guide targeted conservation measures, such as regulating fish-farming practices and protecting vital coastal areas to improve the survival prospects of the Chilean dolphin. Given the extensive fish-farming industry in Chile, this research highlights the need for greater knowledge and comprehensive conservation efforts to ensure the species' long-term survival. By understanding and mitigating the impacts of fish farming and other human activities, we can better protect the habitat and well-being of Chilean dolphins.

2.
Sci Rep ; 13(1): 9374, 2023 Jun 09.
Artigo em Inglês | MEDLINE | ID: mdl-37296214

RESUMO

Urban wetlands are essential to the longstanding health and well-being of cities. Acknowledged as rich in biodiversity and highly productive ecosystems, they provide ecosystem services represented in aspects such as air purification, urban climate regulation, physical and mental health, recreation, and contemplation, among a wide variety of other goods and services on which the quality of life of the inhabitants of large cities such as Bogota depends largely. We used cellular automata to model and simulate urban wetland changes in Bogota, Colombia. The study applied the coupled Markov-Future Land Use Simulation (FLUS) model to simulate and analyze land use/land cover (LULC) change over 20 years. First, we used an orthomosaic (1998) and two WorldView-2 satellite images (2004 and 2010), to detect land cover changes. Then, using the artificial neural network FLUS module, we calculated the relationships between land classes and associated drivers and estimated the probability of occurrence of each land class. Finally, we applied Intensity Analysis to examine the observed and projected LULC change (1998-2034). Results indicate that gains in areas of crops and pastures are at the expense of wetlands. In addition, simulation outputs show that wetlands will likely represent less than 2% of the total study area in 2034, representing a 14% decrease in 24 years. The importance of this project lies in its potential contribution to the decision-making process within the city and as an instrument of natural resource management. Additionally, the results of this study could contribute to the United Nations Sustainable Development Goal 6, "Clean water and sanitation," and climate change mitigation.


Assuntos
Ecossistema , Áreas Alagadas , Colômbia , Qualidade de Vida , Conservação dos Recursos Naturais/métodos , Monitoramento Ambiental/métodos
3.
Rev Med Inst Mex Seguro Soc ; 61(2): 227-233, 2023 Mar 01.
Artigo em Espanhol | MEDLINE | ID: mdl-37201189

RESUMO

Background: Acute intermittent porphyria (AIP) is an uncommon metabolic disease, being the most common of the acute porphyrias. The most frequent symptom is acute abdominal pain, although can be accompanied by seizures, neuro-psychiatric alterations or symmetrical motor neuropathies, which in some patients can progress to respiratory musculature paralysis. Objective: To describe an atypical presentation of acute porphyria to be considered as differential diagnoses in abdominal pain. Clinical case: We present a case of a patient with AIP, presenting acute abdomen, seizures, later developed neuropsychiatric compromise and symmetrical motor neuropathy, and was admitted to mechanical ventilation. Due to the severity of the neurological involvement, he received hemin arginate, presenting with transient hypertransaminemia, an adverse event not previously reported. The evolution was favorable, with mechanical ventilation and hospital discharge withdrawn. Conclusions: The diagnosis of AIP should be considered in cases of acute abdominal pain associated with neurological and/or psychiatric symptoms, particularly young women. The administration of hemin is considered the standard of treatment, and even late could have beneficial effects.


Introducción: la porfiria aguda intermitente (PAI) es una enfermedad metabólica infrecuente, siendo la más común de las porfirias agudas. El síntoma más frecuente es el dolor abdominal agudo, aunque también pueden acompañarse de convulsiones, alteraciones neuro-psiquiátricas o neuropatías motoras simétricas, y que en algunos pacientes puede progresar a la parálisis de la musculatura respiratoria. El objetivo de este trabajo es describir una forma atípica de presentación de una porfiria aguda, a fin de considerar como diagnósticos diferenciales en dolor abdominal. Caso clínico: paciente con PAI, que presenta abdomen agudo, convulsiones, posteriormente compromiso neuro-psiquiátrico y neuropatía motora simétrica, ingresando a ventilación mecánica. Por la gravedad del compromiso neurológico recibió arginato de hemina, cursando con hipertransaminemia transitoria, evento adverso no reportado previamente. La evolución fue favorable, retirándosele la ventilación mecánica y el alta hospitalaria. Conclusiones: se debe considerar el diagnóstico de PAI en casos de dolor abdominal agudo asociado a síntomas neurológicos y/o psiquiátricos, particularmente en mujeres jóvenes. La administración de hemina es considerada el estándar de tratamiento, y aun en forma tardía podría tener efectos beneficiosos.


Assuntos
Porfiria Aguda Intermitente , Masculino , Humanos , Feminino , Porfiria Aguda Intermitente/complicações , Porfiria Aguda Intermitente/diagnóstico , Porfiria Aguda Intermitente/terapia , Hemina , Dor Abdominal/diagnóstico , Dor Abdominal/etiologia , Convulsões , Diagnóstico Diferencial
4.
Molecules ; 26(9)2021 May 08.
Artigo em Inglês | MEDLINE | ID: mdl-34066776

RESUMO

The aim of this work was to monitor the quality, antioxidant capacity and digestibility of chickpea exposed to different modified atmospheres. Chickpea quality (proximal analysis, color, texture, and water absorption) and the antioxidant capacity of free, conjugated, and bound phenol fractions obtained from raw and cooked chickpea, were determined. Cooked chickpea was exposed to N2 and CO2 atmospheres for 0, 25, and 50 days, and the antioxidant capacity was analyzed by DPPH (2,2'-diphenyl-1-picrylhydrazyl), ABTS (2,2'-azino-bis-[3ethylbenzothiazoline-6-sulfonic acid]), and total phenols. After in vitro digestion, the antioxidant capacity was measured by DPPH, ABTS, FRAP (ferric reducing antioxidant power), and AAPH (2,2'-Azobis [2-methylpropionamidine]). Additionally, quantification of total phenols, and UPLC-MS profile were determined. The results indicated that this grain contain high quality and high protein (18.38%). Bound phenolic compounds showed the highest amount (105.6 mg GAE/100 g) and the highest antioxidant capacity in all techniques. Cooked chickpeas maintained their quality and antioxidant capacity during 50 days of storage at 4 and -20 °C under a nitrogen atmosphere. Free and conjugated phenolic compounds could be hydrolyzed by digestive enzymes, increasing their bioaccessibility and their antioxidant capacity during each step of digestion. The majority compound in all samples was enterodiol, prevailing the flavonoid type in the rest of the identified compounds. Chickpea contains biological interest compounds with antioxidant potential suggesting that this legume can be exploited for various technologies.


Assuntos
Antioxidantes/química , Atmosfera/química , Dióxido de Carbono , Cicer/química , Grão Comestível/química , Nitrogênio , Cromatografia Líquida , Digestão , Flavonoides/química , Lignanas/química , Espectrometria de Massas , Fenóis/química , Proteínas de Plantas/química
5.
Acevedo-Peña, Juan; Yomayusa-González, Nancy; Cantor-Cruz, Francy; Pinzon-Florez, Carlos; Barrero-Garzón, Liliana; De-La-Hoz-Siegler, Ilich; Low-Padilla, Eduardo; Ramírez-Ceron, Carlos; Combariza-Vallejo, Felipe; Arias-Barrera, Carlos; Moreno-Cortés, Javier; Rozo-Vanstrahlen, José; Correa-Pérez, Liliana; Rojas-Gambasica, José; González-González, Camilo; La-Rotta-Caballero, Eduardo; Ruíz-Talero, Paula; Contreras-Páez, Rubén; Lineros-Montañez, Alberto; Ordoñez-Cardales, Jorge; Escobar-Olaya, Mario; Izaguirre-Ávila, Raúl; Campos-Guerra, Joao; Accini-Mendoza, José; Pizarro-Gómez, Camilo; Patiño-Pérez, Adulkarín; Flores-Rodríguez, Janine; Valencia-Moreno, Albert; Londoño-Villegas, Alejandro; Saavedra-Rodríguez, Alfredo; Madera-Rojas, Ana; Caballero-Arteaga, Andrés; Díaz-Campos, Andrés; Correa-Rivera, Felipe; Mantilla-Reinaud, Andrés; Becerra-Torres, Ángela; Peña-Castellanos, Ángela; Reina-Soler, Aura; Escobar-Suarez, Bibiana; Patiño-Escobar, Bonell; Rodríguez-Cortés, Camilo; Rebolledo-Maldonado, Carlos; Ocampo-Botero, Carlos; Rivera-Ordoñez, Carlos; Saavedra-Trujillo, Carlos; Figueroa-Restrepo, Catalina; Agudelo-López, Claudia; Jaramillo-Villegas, Claudia; Villaquirán-Torres, Claudio; Rodríguez-Ariza, Daniel; Rincón-Valenzuela, David; Lemus-Rojas, Melissa; Pinto-Pinzón, Diego; Garzón-Díaz, Diego; Cubillos-Apolinar, Diego; Beltrán-Linares, Edgar; Kondo-Rodríguez, Emilio; Yama-Mosquera, Erica; Polania-Fierro, Ernesto; Real-Urbina, Evalo; Rosas-Romero, Andrés; Mendoza-Beltrán, Fernán; Guevara-Pulido, Fredy; Celia-Márquez, Gina; Ramos-Ramos, Gloria; Prada-Martínez, Gonzalo; León-Basantes, Guillermo; Liévano-Sánchez, Guillermo; Ortíz-Ruíz, Guillermo; Barreto-García, Gustavo; Ibagón-Nieto, Harold; Idrobo-Quintero, Henry; Martínez-Ramírez, Ingrid; Solarte-Rodríguez, Ivan; Quintero-Barrios, Jorge; Arenas-Gamboa, Jaime; Pérez-Cely, Jairo; Castellanos-Parada, Jeffrey; Garzón-Martínez, Fredy; Luna-Ríos, Joaquín; Lara-Terán, Joffre; Vargas-Fodríguez, Johanna; Dueñas-Villamil, Rubén; Bohórquez-Feyes, Vicente; Martínez-Acosta, Carlos; Gómez-Mesa, Esteban; Gaitán-Rozo, Julián; Cortes-Colorado, Julián; Coral-Casas, Juliana; Horlandy-Gómez, Laura; Bautista-Toloza, Leonardo; Palacios Palacios, Leonardo; Fajardo-Latorre, Lina; Pino-Villarreal, Luis; Rojas-Puentes, Leonardo; Rodríguez-Sánchez, Patricia; Herrera-Méndez, Mauricio; Orozco-Levi, Mauricio; Sosa-Briceño, Mónica; Moreno-Ruíz, Nelson; Sáenz-Morales, Oscar; Amaya-González, Pablo; Ramírez-García, Sergio; Nieto-Estrada, Víctor; Carballo-Zárate, Virgil; Abello-Polo, Virginia.
Acta méd. colomb ; 46(1): 51-72, ene.-mar. 2021. tab, graf
Artigo em Inglês, Espanhol | LILACS, COLNAL | ID: biblio-1278159

RESUMO

resumen está disponible en el texto completo


Abstract Recent studies have reported the occurrence of thrombotic phenomena or coagulopathy in patients with COVID-19. There are divergent positions regarding the prevention, diagnosis, and treatment of these phenomena, and current clinical practice is based solely on deductions by extension from retrospective studies, case series, observational studies, and international guidelines developed prior to the pandemic. In this context, the aim was to generate a group of recommendations on the prevention, diagnosis and management of thrombotic complications associated with COVID-19. Methods: A rapid guidance was carried out applying the GRADE Evidence to Decision (EtD) frameworks and an iterative participation system, with statistical and qualitative analysis. Results: 31 clinical recommendations were generated focused on: a) Coagulation tests in symptomatic adults with suspected infection or confirmed SARS CoV-2 infection; b) Thromboprophylaxis in adults diagnosed with COVID-19 (Risk scales, thromboprophylaxis for outpatient, in-hospital management, and duration of thromboprophylaxis after discharge from hospitalization), c) Diagnosis and treatment of thrombotic complications, and d) Management of people with previous indication of anticoagulant agents. Conclusions: Recommendations of this consensus guide clinical decision-making regarding the prevention, diagnosis, and treatment of thrombotic phenomena in patients with COVID-19, and represent an agreement that will help decrease the dispersion in clinical practices according to the challenge imposed by the pandemic.


Assuntos
Humanos , Masculino , Feminino , Adulto , SARS-CoV-2 , COVID-19 , Embolia e Trombose , Consenso , Anticoagulantes
6.
Rev. cub. inf. cienc. salud ; 32(1): e1831, tab, fig
Artigo em Espanhol | LILACS, CUMED | ID: biblio-1280204

RESUMO

El presente estudio se propuso caracterizar los cursos de posgrado del Movimiento iSchools en América del Norte, Asia Pacífico y Europa. Se enuncian los aspectos teóricos conceptuales referentes al posgrado, además de la génesis y desarrollo del movimiento iSchools. Se utiliza el enfoque cuantitativo, apoyado del método análisis de contenido y la técnica análisis documental para analizar el tipo, la modalidad, duración, evaluación y contenidos de los posgrados en el movimiento iSchools. Se consultan los campos semánticos del Docutes para la identificación de los principales contenidos presentes en los programas de posgrado. Dentro de los principales resultados se identificaron las maestrías como tipología de posgrado más frecuentes. La modalidad a tiempo completo fue la más utilizada por las tres regiones geográficas. Los tipos de evaluación de mayor cuantía fueron las tesis. Los contenidos más relevantes en los tres capítulos continentales se encuentran asociados a los campos semánticos Sistemas de Información y Representación y recuperación de información(AU)


The present study aimed to characterize the graduate courses of the iSchools Movement in North America, Asia Pacific and Europe. The theoretical and conceptual aspects of postgraduate studies are enunciated, as well as the genesis and development of the iSchools movement. The quantitative approach is used, supported by the content analysis method and the documentary analysis technique to analyze the type, modality, duration, evaluation and content of postgraduate courses in the iSchools movement. The semantic fields of the Docutes were consulted for the identification of the main contents present in the postgraduate programs. Among the main results, master's degrees were identified as the most frequent postgraduate typology. The full-time modality was the most used by the three geographical regions. The types of evaluation with the highest amount were theses. The most relevant contents in the three continental chapters are associated with the semantic fields Information Systems and Information representation and retrieval(AU)


Assuntos
Humanos , Sistemas de Informação , Armazenamento e Recuperação da Informação , Movimento
7.
Saudi J Biol Sci ; 28(2): 1401-1416, 2021 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-33613070

RESUMO

Navicula incerta is a marine microalga distributed in Baja California, México, commonly used in aquaculture nutrition, and has been extended to human food, biomedical, and pharmaceutical industries due to its high biological activity. Therefore, the study aimed to optimize culture conditions to produce antioxidant pigments. A central composite experimental design and response surface methodology (RSM) was employed to analyze the best culture conditions. The medium (nitrogen-deficient concentrations), salinity (PSU = Practical Salinity Unity [g/kg]), age of culture (days), and solvent extraction (ethanol, methanol, and acetone) were the factors used for the experiment. Chlorophyll a (Chl a) and total carotenoids (T-Car), determined spectroscopically, were used as the response variables. The antioxidant capacity was evaluated by DPPH• and ABTS•+ radical inhibition, FRAP, and anti-hemolytic activity. According to the overlay plots, the optimum growth conditions for Chl a and T-Car production were the following conditions: medium = 0.44 mol·L-1 of NaNO3, salinity = 40 PSU, age of culture: 3.5 days, and solvent = methanol. The pigment extracts obtained in these optimized conditions had high antioxidant activity in ABTS•+ (86.2-92.1% of inhibition) and anti-hemolytic activity (81.8-96.7% of hemolysis inhibition). Low inhibition (33-35%) was observed in DPPH•. The highest value of FRAP (766.03 ± 16.62 µmol TE/g) was observed in the acetonic extract. The results demonstrated that RSM could obtain an extract with high antioxidant capacity with potential applications in the biomedical and pharmaceutical industry, which encourages the use of natural resources for chemoprevention of chronic-degenerative pathologies.

8.
Rev. colomb. cardiol ; 27(5): 446-460, sep.-oct. 2020. tab, graf
Artigo em Espanhol | LILACS, COLNAL | ID: biblio-1289255

RESUMO

Introducción estudios recientes han reportado fenómenos trombóticos o coagulopatía en pacientes con COVID-19. Hay posiciones divergentes en cuanto a la prevención, el diagnóstico y el tratamiento de estos fenómenos, y la práctica clínica actual está basada únicamente en deducciones por extensión a partir de estudios retrospectivos, series de casos, estudios observacionales y guías internacionales desarrolladas previas a la pandemia. Objetivo establecer una serie de recomendaciones sobre prevención, diagnóstico y manejo de las complicaciones trombóticas asociadas a COVID-19. Métodos se desarrolló una guía rápida en la que se aplicó el marco de la evidencia a la decisión (EtD) de GRADE y un sistema de participación iterativo, con análisis estadísticos y cualitativos de sus resultados. Resultados se generaron 31 recomendaciones clínicas enfocadas a: a) Pruebas de coagulación en adultos sintomáticos con sospecha de infección o infección confirmada por SARS-CoV-2; b) Tromboprofilaxis en personas adultas con diagnóstico de COVID-19 (escalas de riesgo, tromboprofilaxis de manejo ambulatorio, intrahospitalario y duración de tromboprofilaxis después del egreso de hospitalización), c) Diagnóstico y tratamiento de las complicaciones trombóticas y d) Manejo de personas con indicación previa a usar agentes anticoagulantes. Conclusiones las recomendaciones clínicas de este consenso orientan la toma de decisiones clínicas respecto a prevención, diagnóstico y tratamiento de fenómenos trombóticos en pacientes con COVID-19, y representan un acuerdo que ayudará a disminuir la dispersión en las prácticas clínicas acorde con el desafío que impone la pandemia.


Abstract Introduction: recent studies have reported the occurrence of thrombotic phenomena or coagulopathy in patients with COVID-19. There are divergent positions regarding the prevention, diagnosis, and treatment of these phenomena, and current clinical practice is based solely on deductions by extension from retrospective studies, case series, observational studies, and international guidelines developed prior to the pandemic. Objective: to generate a group of recommendations on the prevention, diagnosis and management of thrombotic complications associated with COVID-19. Methods: a rapid guidance was carried out applying the GRADE Evidence to Decision (EtD) frameworks and an iterative participation system, with statistical and qualitative analysis. Results: 31 clinical recommendations were generated focused on: a) Coagulation tests in symptomatic adults with suspected infection or confirmed SARS CoV-2 infection; b) Thromboprophylaxis in adults diagnosed with COVID-19 (Risk scales, thromboprophylaxis for outpatient, in-hospital management, and duration of thromboprophylaxis after discharge from hospitalization), c) Diagnosis and treatment of thrombotic complications, and d) Management of people with previous indication of anticoagulant agents. Conclusions: recommendations of this consensus guide clinical decision-making regarding the prevention, diagnosis, and treatment of thrombotic phenomena in patients with COVID-19, and represent an agreement that will help decrease the dispersion in clinical practices according to the challenge imposed by the pandemic.


Assuntos
Humanos , Adulto , Consenso , Diagnóstico , COVID-19 , Transtornos da Coagulação Sanguínea , Embolia e Trombose , SARS-CoV-2 , COVID-19 , Anticoagulantes
9.
J Immunoassay Immunochem ; 41(5): 896-912, 2020 Sep 02.
Artigo em Inglês | MEDLINE | ID: mdl-32799635

RESUMO

Microalbuminuria is a term to describe a moderate increase in the level of albumin in urine. It is an important prognostic marker for kidney damage in diseases such as diabetes mellitus and hypertension. A simple sandwich-type ultramicroELISA assay (UMELISA) has been developed for the measurement of albumin in human urine samples. Strips coated with a high affinity monoclonal antibody directed against albumin are used as solid phase, to ensure the specificity of the assay. The albumin assay was completed in 1 hr and 30 min, with a measuring range of 1.44-200 ng/mL. The intra- and inter-assay coefficients of variation were 3.98-4.35% and 7.59-8.92%, respectively, depending on the albumin concentrations evaluated. Percentage recovery ranged from 94.26 to 98.50%. Regression analysis showed a good correlation with the commercial quantitative turbidimetric test Microalbumin-turbilatex (n = 240, r = 0.994, p < .01). The analytical performance characteristics of our UMELISA MICROALBUMINA endorse its use for the quantification of albumin in human urine samples. This test will make a cost-effective diagnostic kit accessible to low-income countries such as Latin American countries and is now available in the Cuban Public Health System.


Assuntos
Albuminas/análise , Albuminúria , Ensaio de Imunoadsorção Enzimática , Humanos
10.
Curr Protein Pept Sci ; 20(12): 1204-1217, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31208309

RESUMO

Legume proteins are precursors of bioactive components, such as peptides. In the present paper, different types of legume as sources of bioactive peptides and hydrolysates are considered and discussed based on their anti-inflammatory effect. Peptides with anti-inflammatory activity were included from in vitro and in vivo studies. Current strategies for obtaining bioactive peptides, as well as their structure and impact on health, were also reviewed. It was discovered that peptides derived from legume protein, mainly soybean and bean, can regulate several inflammatory markers, which include prostaglandin E2 (PGE2), nitric oxide (NO), inducible nitric oxide synthase (iNOS), cyclooxygenase 2 (COX- 2), cytokines, and chemokines. So far, lunasin, VPY and γ-glutamyl peptides have been identified with anti-inflammatory activity but their mechanisms have not been fully elucidated. Furthermore, it is necessary to gather more information about hydrolysates containing peptides and single peptides with antiinflammatory activity. Considering the wide diversity, legume may be promising components to produce peptides efficient to ameliorate inflammatory disorders.


Assuntos
Anti-Inflamatórios não Esteroides/química , Fabaceae/química , Peptídeos/química , Extratos Vegetais/química , Proteínas de Plantas/química , Anti-Inflamatórios não Esteroides/farmacologia , Quimiocinas/metabolismo , Ciclo-Oxigenase 2/metabolismo , Citocinas/metabolismo , Dinoprostona/metabolismo , Descoberta de Drogas/métodos , Humanos , Óxido Nítrico/metabolismo , Óxido Nítrico Sintase Tipo II/metabolismo , Peptídeos/farmacologia , Extratos Vegetais/farmacologia , Proteínas de Plantas/farmacologia , Conformação Proteica , Relação Estrutura-Atividade
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