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  1. Article ; Online: CONTENIDO DE COMPUESTOS FENÓLICOS Y CAPACIDAD ANTIOXIDANTE DE EXTRACTOS DE MORA (Rubus glaucus Benth) OBTENIDOS BAJO DIFERENTES CONDICIONES

    Jennifer Pilar Rojas -Llanes / Jairo René Martínez / Elena E Stashenko

    Vitae, Vol 21, Iss 3, Pp 218-

    2014  Volume 227

    Abstract: Antecedentes: La mora contiene compuestos fenólicos que contribuyen a su capacidad antioxidante ... el mayor contenido de compuestos fenólicos y el valor de capacidad antioxidante más alto en extractos de mora andina ... Rubus glaucus Benth). Comparar la capacidad antioxidante de los extractos de mora ...

    Abstract Antecedentes: La mora contiene compuestos fenólicos que contribuyen a su capacidad antioxidante. El método más común para aislar estas sustancias es la extracción con solventes, que puede asistirse con ultrasonido para aumentar el contenido de analitos extraídos. Objetivos: Determinar las condiciones de tipo y concentración de solvente en agua, y de tiempo de extracción asistida con ultrasonido, con las cuales se obtiene el mayor contenido de compuestos fenólicos y el valor de capacidad antioxidante más alto en extractos de mora andina (Rubus glaucus Benth). Comparar la capacidad antioxidante de los extractos de mora con la de antioxidantes de referencia como el di-terc-butilhidroxitolueno (BHT) y el a-tocoferol. Métodos: Se hicieron tres diseños de experimentos de dos factores con tres niveles cada uno. Las variables fueron la concentración de acetona, etanol o metanol en agua y el tiempo de extracción asistida con ultrasonido. Los observables-respuesta fueron el contenido total de compuestos fenólicos, que se determinó utilizando el reactivo de Folin-Ciocalteu, y la capacidad antioxidante, determinada mediante el ensayo ORAC (capacidad de absorción de radicales de oxígeno). Se calculó el coeficiente de correlación entre las dos variables de respuesta. Se comparó la capacidad antioxidante de los extractos de mora, obtenidos bajo las condiciones inferidas como óptimas, con las del BHT y del a-tocoferol. Resultados: Los extractos adquiridos con soluciones acuosas de acetona al 31% (v/v), asistiendo la extracción con ultrasonido durante 100 min, mostraron los mayores contenidos de compuestos fenólicos (30 ± 1 mg ácido gálico/g mora seca), y los valores de capacidad antioxidante más altos (273 ± 6 mmol Trolox®/g mora seca). El coeficiente de correlación entre las dos variables de respuesta fue 0,92. Los extractos de mora presentaron mejor capacidad antioxidante que el BHT y el a-tocoferol. Conclusiones: Bajo las condiciones óptimas de extracción, con las soluciones acuosas de acetona se obtuvieron el mayor contenido de compuestos fenólicos y el valor de capacidad antioxidante más alto. Se observó una relación lineal entre las dos variables de respuesta. Los extractos de mora, obtenidos bajo las mejores condiciones halladas, presentaron mayor capacidad antioxidante en comparación con la de los compuestos de referencia analizados.
    Keywords Mora andina ; compuestos fenólicos ; capacidad antioxidante ; ORAC ; ultrasonido ; Pharmacy and materia medica ; RS1-441 ; Medicine ; R
    Language Spanish
    Publishing date 2014-12-01T00:00:00Z
    Publisher Universidad de Antioquia
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Changes in lung function and dyspnea perception in Colombian Covid-19 patients after a 12-week pulmonary rehabilitation program.

    Zona, Diana Carolina / Páez-Mora, Carlos D / Angarita-Sierra, Teddy / Rojas-Paredes, Matilde E / Cano-Trejos, Daniela

    medRxiv

    Abstract: BACKGROUND: Although moderate and severe COVID-19 patients have shown obstructive and restrictive disorders in pulmonary function after recovery from the disease, studies evaluating the effectiveness of rehabilitation programs that seek to improve lung ... ...

    Abstract BACKGROUND: Although moderate and severe COVID-19 patients have shown obstructive and restrictive disorders in pulmonary function after recovery from the disease, studies evaluating the effectiveness of rehabilitation programs that seek to improve lung function are scarce. AIM: Herein, we evaluate changes in lung function and perceived dyspnea in Covid-19 patients after undergoing 12 weeks of a PR program. DESIGN: Retrospective observational study SETTING: Cesar, Colombia Neumocesar Pneumological Center. POPULATION: 100 outpatients with a history of Covid-19 METHODS: We evaluated respiratory function using spirometry parameters, as well as the mMRC dyspnea scale for perceived dyspnea in 100 patients with a history of Covid-19. We used univariate and multivariate statistical approaches to assess changes in lung function and perceived dyspnea before and after a PR program to determine whether gender, age, height, weight, comorbidities, and oxygen delivery system affect the recovery of lung function and perceived dyspnea. RESULTS: We found that PR treatment has positive effects on respiratory pathologies caused by SARS-CoV-2 infection regardless of patient gender, indicating that rehabilitation provided benefits regardless of the physical characteristics of the patients. Both univariate and multivariate statistical analyses indicated that FVC, FEV1, FEF 25-75, and mMRC are robust diagnostic indicators of lung function recovery and perceived dyspnea. Both invasive and non-invasive positive pressure ventilatory support had deleterious effects on lung function prolongating patient recovery. CONCLUSIONS: Rehabilitation programs can benefit patients facing respiratory pathologies caused by SARS-CoV-2 infection. Additional research on the long-term effects of the sequelae of Covid-19 is needed. A large sample of patients is needed to clarify the effects of therapy on respiratory function. CLINICAL REHABILITATION IMPACT: PR programs have positive effects on patients facing respiratory pathologies caused by SARS-CoV-2 infection.
    Keywords covid19
    Language English
    Publishing date 2024-03-15
    Publisher Cold Spring Harbor Laboratory Press
    Document type Article ; Online
    DOI 10.1101/2024.03.11.24303896
    Database COVID19

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  3. Article ; Online: Statistical Improvement of rGILCC 1 and rPOXA 1B Laccases Activity Assay Conditions Supported by Molecular Dynamics.

    Mora-Gamboa, María P C / Ferrucho-Calle, María C / Ardila-Leal, Leidy D / Rojas-Ojeda, Lina M / Galindo, Johan F / Poutou-Piñales, Raúl A / Pedroza-Rodríguez, Aura M / Quevedo-Hidalgo, Balkys E

    Molecules (Basel, Switzerland)

    2023  Volume 28, Issue 21

    Abstract: Laccases (E.C. 1.10.3.2) are glycoproteins widely distributed in nature. Their structural ...

    Abstract Laccases (E.C. 1.10.3.2) are glycoproteins widely distributed in nature. Their structural conformation includes three copper sites in their catalytic center, which are responsible for facilitating substrate oxidation, leading to the generation of H
    MeSH term(s) Molecular Dynamics Simulation ; Laccase/metabolism ; Hydrogen Peroxide ; Citrates ; Oxidation-Reduction
    Chemical Substances 2,2'-azino-di-(3-ethylbenzothiazoline)-6-sulfonic acid (28752-68-3) ; Laccase (EC 1.10.3.2) ; Hydrogen Peroxide (BBX060AN9V) ; Citrates
    Language English
    Publishing date 2023-10-25
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 1413402-0
    ISSN 1420-3049 ; 1431-5165 ; 1420-3049
    ISSN (online) 1420-3049
    ISSN 1431-5165 ; 1420-3049
    DOI 10.3390/molecules28217263
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Identifying gaps on health impacts, exposures, and vulnerabilities to climate change on human health and wellbeing in South America: a scoping review.

    Palmeiro-Silva, Yasna K / Lescano, Andres G / Flores, Elaine C / Astorga E, Yamileth / Rojas, Luciana / Chavez, Mario G / Mora-Rivera, Wendel / Hartinger, Stella M

    Lancet regional health. Americas

    2023  Volume 26, Page(s) 100580

    Abstract: There is an important gap in regional information on climate change and health, limiting the development of science-based climate policies in South American countries. This study aims to identify the main gaps in the existing scientific literature on the ...

    Abstract There is an important gap in regional information on climate change and health, limiting the development of science-based climate policies in South American countries. This study aims to identify the main gaps in the existing scientific literature on the impacts, exposure, and vulnerabilities of climate change on population health. A scoping review was performed guided by four sub-questions focused on the impacts of climate change on physical and mental health, exposure and vulnerability factors of population to climate hazards. The main findings showed that physical impacts mainly included infectious diseases, while mental health impacts included trauma, depression, and anxiety. Evidence on population exposure to climate hazards is limited, and social determinants of health and individual factors were identified as vulnerability factors. Overall, evidence on the intersection between climate change and health is limited in South America and has been generated in silos, with limited transdisciplinary research. More formal and systematic information should be generated to inform public policy.
    Funding: None.
    Language English
    Publishing date 2023-08-24
    Publishing country England
    Document type Journal Article ; Review
    ISSN 2667-193X
    ISSN (online) 2667-193X
    DOI 10.1016/j.lana.2023.100580
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Había una vez un lugar donde aprendimos a escuchar. The Other Front line_voces por la justicia social.

    Ruiz-Azarola, Ainhoa / Miranda Rojas, Daniela E / Aguilera-Cruz, Jeny / Gras-García, Elena Mª / Hernán García, Mariano / Pereira Iglesia, Ana / Mora Barrios, Juan Román / Mary Popay, Jennifer

    Revista espanola de salud publica

    2023  Volume 97

    Abstract: Government responses to the COVID-19 pandemic generated a new wave of social inequalities for communities around the world living in unjust circumstances . Lockdowns and health measures overlooked housing conditions, transitions to virtual schooling, ... ...

    Title translation Once upon a time there was a place where we learned to listen. The Other Front line_voices for social justice.
    Abstract Government responses to the COVID-19 pandemic generated a new wave of social inequalities for communities around the world living in unjust circumstances . Lockdowns and health measures overlooked housing conditions, transitions to virtual schooling, ignoring homes and families without the technological infrastructure and skills to access education, as well as overlooking the availability of an economic remainder. informal employment. The experiences of various communities around the world, from racialized/ethnic communities, homeless, migrants, elderly to young populations, were not reflected in the knowledge that guided the Government's responses; in fact, their experiences were involuntarily silenced . As a result of all this, it was necessary to create alliances with communities that lived in vulnerable conditions and that bore the great burden of the pandemic, to ensure that their voices were included in Public Health policies and practices.
    MeSH term(s) Humans ; Aged ; Pandemics ; Spain ; Socioeconomic Factors ; COVID-19/epidemiology ; Social Justice
    Language Spanish
    Publishing date 2023-12-22
    Publishing country Spain
    Document type English Abstract ; Journal Article
    ZDB-ID 1288657-9
    ISSN 2173-9110 ; 0034-8899 ; 1135-5727
    ISSN (online) 2173-9110
    ISSN 0034-8899 ; 1135-5727
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: An immersive experience in the virtual 3D VirBELA environment for leadership development in undergraduate students during the COVID-19 quarantine

    Mora-Beltrán, C. E. / Rojas, A. E. / Mejía-Moncayo, C.

    ICAI Workshops, ICAIW 2020 - 1st International Workshop on Applied Artificial Intelligence, WAAI 2020|2nd International Workshop on Applied Informatics for Economics, Society and Development, AIESD 2020|3rd International Workshop on Data Engineering and Analytics, WDEA 2020|3rd International Workshop on Smart and Sustainable Cities, WSSC 2020

    Abstract: Leadership is an essential soft skill in any professional today However, its development can be a significant challenge in traditional classes focused on disciplinary competencies In this sense, the use of an immersive 3D virtual environment can be an ... ...

    Abstract Leadership is an essential soft skill in any professional today However, its development can be a significant challenge in traditional classes focused on disciplinary competencies In this sense, the use of an immersive 3D virtual environment can be an advantage for leadership development, since it can facilitate communication and interaction between the participants;thanks to overcoming fear associated with face-to-face interaction In this regard, this work exposes a leadership activity developed in Vir- BELA, explaining their designing, developing, and evaluating processes The results obtained show that this activity under the participants' perception was facilitating the interaction of the participants among themselves and with the professor and improve the learning process in different ways This process was carried out during quarantine due to Covid19 © 2020 Copyright for this paper by its authors
    Keywords covid19
    Publisher WHO
    Document type Article
    Note WHO #Covidence: #923188
    Database COVID19

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  7. Article ; Online: Occurrence of pharmaceuticals, hazard assessment and ecotoxicological evaluation of wastewater treatment plants in Costa Rica.

    Ramírez-Morales, Didier / Masís-Mora, Mario / Montiel-Mora, José R / Cambronero-Heinrichs, Juan Carlos / Briceño-Guevara, Susana / Rojas-Sánchez, Carlos E / Méndez-Rivera, Michael / Arias-Mora, Víctor / Tormo-Budowski, Rebeca / Brenes-Alfaro, Laura / Rodríguez-Rodríguez, Carlos E

    The Science of the total environment

    2020  Volume 746, Page(s) 141200

    Abstract: The continuous release of pharmaceuticals from WWTP effluents to freshwater is a matter of concern, due to their potential effects on non-target organisms. The occurrence of pharmaceuticals in WWTPs and their associated hazard have been scarcely studied ... ...

    Abstract The continuous release of pharmaceuticals from WWTP effluents to freshwater is a matter of concern, due to their potential effects on non-target organisms. The occurrence of pharmaceuticals in WWTPs and their associated hazard have been scarcely studied in Latin American countries. This study aimed at monitoring for the first time the occurrence of 70 pharmaceutical active compounds (PhACs) in WWTPs across Costa Rica; the application of the hazard quotient (HQ) approach coupled to ecotoxicological determinations permitted to identify the hazard posed by specific pharmaceuticals and toxicity of the effluents, respectively. Thirty-three PhACs were found, with 1,7-dimethylxanthine, caffeine, acetaminophen, ibuprofen, naproxen, ketoprofen and gemfibrozil being the most frequently detected (influents/effluents). HQ for specific pharmaceuticals revealed 24 compounds with high/medium hazard in influents, while the amount only decreased to 21 in effluents. The top HQ values were obtained for risperidone, lovastatin, diphenhydramine and fluoxetine (influent/effluent samples), plus caffeine (influent) and trimethoprim (effluent). Likewise, the estimation of overall hazard in WWTP samples (sum of individual HQ, ∑HQ) demonstrated that every influent and 96% of the effluents presented high hazard towards aquatic organisms. Ecotoxicological analysis (Daphnia magna, Lactuca sativa and Microtox test) revealed that 16.7% of the effluents presented toxicity towards all benchmark organisms; the phytotoxicity was particularly frequent, as inhibition values ≥20% in the germination index for L. sativa were obtained for all the effluents. The ∑HQ approach estimated the highest hazard in urban wastewater, while the ecotoxicological results showed the highest toxicity in hospital and landfill wastewater. Likewise, ecotoxicological results and ∑HQ values showed a rather poor correlation; instead, better correlations were obtained between ecotoxicological parameters and HQ values for some individual pharmaceuticals such as cephalexin and diphenhydramine. Findings from this study provide novel information on the occurrence of pharmaceuticals and the performance of WWTPs in the tropical region of Central America.
    MeSH term(s) Animals ; Central America ; Costa Rica ; Environmental Monitoring ; Pharmaceutical Preparations ; Waste Disposal, Fluid ; Waste Water/analysis ; Water Pollutants, Chemical/analysis ; Water Pollutants, Chemical/toxicity
    Chemical Substances Pharmaceutical Preparations ; Waste Water ; Water Pollutants, Chemical
    Language English
    Publishing date 2020-07-26
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2020.141200
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Impact of oxytetracycline and bacterial bioaugmentation on the efficiency and microbial community structure of a pesticide-degrading biomixture.

    Castro-Gutiérrez, Víctor / Masís-Mora, Mario / Carazo-Rojas, Elizabeth / Mora-López, Marielos / Rodríguez-Rodríguez, Carlos E

    Environmental science and pollution research international

    2018  Volume 25, Issue 12, Page(s) 11787–11799

    Abstract: An experimental study evaluating the effect of bioaugmentation and antibiotic (oxytetracycline) application on pesticide degradation and microbial community structure of a biomixture used in a biopurification system (BPR) was conducted. The ... ...

    Abstract An experimental study evaluating the effect of bioaugmentation and antibiotic (oxytetracycline) application on pesticide degradation and microbial community structure of a biomixture used in a biopurification system (BPR) was conducted. The bioaugmentation employed a carbofuran-degrading bacterial consortium. The non-bioaugmented biomixture showed excellent performance for removal of atrazine (t
    MeSH term(s) Anti-Bacterial Agents/pharmacology ; Atrazine/metabolism ; Bacteria/drug effects ; Bacteria/metabolism ; Benzimidazoles/metabolism ; Biodegradation, Environmental ; Carbamates/metabolism ; Carbofuran/metabolism ; Oxytetracycline/pharmacology ; Pesticides/chemistry ; Pesticides/metabolism ; Soil Microbiology
    Chemical Substances Anti-Bacterial Agents ; Benzimidazoles ; Carbamates ; Pesticides ; carbendazim (H75J14AA89) ; Atrazine (QJA9M5H4IM) ; Carbofuran (SKF77S6Y67) ; Oxytetracycline (X20I9EN955)
    Language English
    Publishing date 2018-02-14
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1178791-0
    ISSN 1614-7499 ; 0944-1344
    ISSN (online) 1614-7499
    ISSN 0944-1344
    DOI 10.1007/s11356-018-1436-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: Meso-organizations, relational capital, and rural producers' integration into the market in a context of violence

    Orozco Collazos, L. E. / Forero Pineda, C. / Baldrich Mora, V. A. / Moscoso Rojas, M. F.

    Journal of rural studies

    2020  Volume 80, Issue -, Page(s) 391

    Language English
    Document type Article
    ZDB-ID 252458-2
    ISSN 0743-0167
    Database Current Contents Nutrition, Environment, Agriculture

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  10. Article: Elemental composition of airborne particulate matter from coastal South Florida area influenced by African dust events

    Ramirez, Cesar E. / Quinete, Natalia / Rojas de Astudillo, Luisa / Arroyo-Mora, Luis E. / Seba, Douglas / Gardinali, Piero

    Aeolian research. 2022 Feb., v. 54

    2022  

    Abstract: Airborne particulate matter (APM) is a complex mixture of dust, dirt, soot and smoke containing both organic and inorganic components as well as biological particles. APM below 10 µm can enter the respiratory track and are known to cause adverse health ... ...

    Abstract Airborne particulate matter (APM) is a complex mixture of dust, dirt, soot and smoke containing both organic and inorganic components as well as biological particles. APM below 10 µm can enter the respiratory track and are known to cause adverse health effects. African dust storms are responsible for the transport of large amount of APM across the Atlantic Ocean during summer months. Anthropogenic activities are also responsible for APM pollution contribution in coastal areas and could have potential effects on sensitive ecosystems. The present study evaluates the elemental composition of APM collected from a coastal area in South Florida. In this study, a high-volume air sampler equipped with Versapor filters and located near the Port of Fort Lauderdale was employed for APM collection from 2005 to 2010. APM chemical composition was analyzed for multiple elements by ICP-MS. Seven of the eleven metals listed by the EPA as hazardous air pollutants (Mn, Cd, Cr, Ni, Pb, As, Co and Se) were detected in the samples. Iron and aluminum were the most abundant elements found in all samples, followed by V and Ni, which are usually associated with anthropogenic pollution coming from fossil fuel combustion. Specific sources of APM pollution were identified by principal component analysis and using the U.S. EPA UNMIX model for environmental data analyses. Rare earth elements were used to identify contributions of geological material to the APM and African dust influence during the summer months.
    Keywords United States Environmental Protection Agency ; air ; aluminum ; coasts ; dust ; elemental composition ; fossil fuels ; fuel combustion ; models ; particulates ; principal component analysis ; research ; soot ; summer ; Atlantic Ocean ; Florida
    Language English
    Dates of publication 2022-02
    Publishing place Elsevier B.V.
    Document type Article
    ISSN 1875-9637
    DOI 10.1016/j.aeolia.2022.100774
    Database NAL-Catalogue (AGRICOLA)

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