Výsledky vyhledávání - "Alirio Balza"

Akademický článek

Secondary metabolites of lichens in the snow zone of the Sierra Nevada in Mérida-Venezuela and their role in the absorption of ultraviolet radiation

Autor: José Alberto Rojas-Fernández, Alirio Balza-Quintero, Vicente Marcano, Paula Andrea Rojas, Delsy Dávila-Vera, Zulma Peña-Contreras, Rosa Virginia Mendoza-Briceño, Ernesto Palacios-Prü

Publikováno v: Anales del Jardín Botánico de Madrid, Vol 65, Iss 1, Pp 59-72 (2008)

Photochemical analyses of secondary compounds in lichens from the venezuelan andean snow zone were carried out in order to know the absorbance capacity of UV radiation at the UVA, UVB and UVC ranges and to determine its probable UV protective functio

Externí odkaz: https://doaj.org/article/f768abbf46084b1d9011b1e716f46eec

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Evaluación del tiempo de cristalización en la preparación de la zeolita BEA por síntesis hidrotermal

Autor: Julio Colmenares-Zerpa, Génesis Márquez, Miguel Delgado, Jines Contreras, Alirio Balza, Delsy Dávila, Marlín Villarroel, Claudio Lugo, Freddy Imbert, Pedro Rodríguez-Sulbarán

Se preparó una serie de materiales zeolíticos tipo BEA por síntesis hidrotermal variando el tiempo de cristalización, a partir de un gel con relación nominal Si/Al=25. Se empleó hidróxido de tetraetilamonio (TEAOH) como agente director de estr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9bae57476034ef196d52e793b2c9032d

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Developmental exposure to mancozeb induced neurochemical and morphological alterations in adult male mouse hypothalamus

Autor: Beluardi Sánchez-Gil, Delsy Dávila-Vera, Zulma Peña-Contreras, Alirio Balza-Quintero, Rosa Virginia Mendoza-Briceño, Yasmin Morales-Ovalles, Leticia Miranda-Contreras

Publikováno v: Environmental Toxicology and Pharmacology. 64:139-146

Mancozeb, a dithiocarbamate widely used in agriculture, is considered a developmental hazard in humans; however, more evidences are still needed concerning the consequences of chronic exposure to this pesticide. Mancozeb neurotoxicity in developing m

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3852732893bf62870d420ec743cce48a
https://doi.org/10.1016/j.etap.2018.10.004

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Diversity of culturable bacteria recovered from Pico Bolívar’s glacial and subglacial environments, at 4950 m, in Venezuelan tropical Andes

Autor: Alirio Balza-Quintero, Johnma Rondón, Wilvis Balcazar, Wileidy Gómez, Delsy Dávila-Vera, María M. Ball, Luis Andrés Yarzábal, Alejandra Melfo, Rosa Virginia Mendoza-Briceño, Marcos Rengifo

Publikováno v: Canadian Journal of Microbiology
Repositorio Universidad de Cuenca
Universidad de Cuenca
instacron:UCUENCA

Even though tropical glaciers are retreating rapidly and many will disappear in the next few years, their microbial diversity remains to be studied in depth. In this paper we report on the biodiversity of the culturable fraction of bacteria colonizin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d72d7c9aec5d1b34739f5cf137a6f577
https://doi.org/10.1139/cjm-2016-0172

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Atrazine and mancozeb induce excitotoxicity and cytotoxicity in primary cultures of mouse cerebellar cortex

Autor: Leticia Miranda-Contreras, Zulma Peña-Contreras, Siham Salmen, Alirio Balza-Quintero, Rosa Virginia Mendoza-Briceño, Delsy Dávila-Vera, Yasmin Morales-Ovalles, Melisa Colmenares-Sulbarán

Publikováno v: Toxicological & Environmental Chemistry. 98:959-976

This work aimed to determine the neurotoxicity of atrazine and mancozeb by high performance liquid chromatography (HPLC) evaluation of neurotransmitters, and morphologically by flow cytometry and ultrastructural analysis using transmission electron m

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::aa5ed2d0753c5813ad6eebd78236e8c2
https://doi.org/10.1080/02772248.2016.1151020

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Altered Hematological and Biochemical Parameters in Schoolchildren Living in an Agricultural Community of Merida State, Venezuela

Autor: Jesús Osuna, Iraida Salazar, Alirio Balza, Leticia Mir, a-Contreras, Melisa Colmenares, Rosanna Cicchetti, Ibis Cruz, Yasmin Morales, Beluardi Sanchez, Nolis Camacho, Leisalba Zavala

Publikováno v: Journal of Environmental & Analytical Toxicology.

Epidemiological studies have found that children living in a pesticide treated farmland have higher risk of developing cancer or other serious health problems. Their exposure to pesticides could be limited by periodic health assessments; however, the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::db55481c25d2ff1b709cf8d8c0d948f0
https://doi.org/10.4172/2161-0525.1000431

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Plasminogen binding proteins in secreted membrane vesicles of Leishmania mexicana

Autor: Amaranta Gómez-Arreaza, Delsy Dávila-Vera, Héctor Acosta, Wilfredo Quiñones, Juan Luis Concepción, Alirio Balza-Quintero, Rosa Virginia Mendoza-Briceño, Luisana Avilan, Lourdes Figuera

Publikováno v: Molecular and Biochemical Parasitology. 187:14-20

Membrane vesicles secreted by Leishmania mexicana were collected and analyzed. These vesicles can bind plasminogen and were shown to contain enolase, previously identified as a plasminogen-binding protein. In addition, another plasminogen-binding pro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d4acbae38962f160dc2972f2d0b67d2
https://doi.org/10.1016/j.molbiopara.2012.11.002

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[Effects of occupational exposure to pesticides on semen quality of workers in an agricultural community of Merida state, Venezuela]

Autor: Leticia, Miranda-Contreras, Ibis, Cruz, Jesús A, Osuna, Roald, Gómez-Pérez, Lisbeth, Berrueta, Siham, Salmen, Melisa, Colmenares, Silvio, Barreto, Alirio, Balza, Yasmin, Morales, Leisalba, Zavala, Emilitza, Labarca, Nelly, García, Beluardi, Sanchez, Carlos A, Contreras, Henry, Andrade

Publikováno v: Investigacion clinica. 56(2)

Numerous studies report adverse effects of pesticides on male reproductive health. The objectives of this study were to investigate whether there is a relationship between occupational exposure to pesticides and semen quality, and to determine whethe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::ce2084c628c2e2b27a948f8b8e957dc2
https://pubmed.ncbi.nlm.nih.gov/26299054

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Occupational exposure to organophosphate and carbamate pesticides affects sperm chromatin integrity and reproductive hormone levels among Venezuelan farm workers

Autor: Alirio Balza, Lenin Valeri, Leisalba Zavala, Gerardo Rojas, Yuri Molina, Ibis Cruz, Jesús Osuna, Melisa Colmenares, Siham Salmen, Yasmin Morales, Carlos A Contreras, Silvio Barreto, Lisbeth Berrueta, Leticia Miranda-Contreras, Roald Gómez-Pérez

Publikováno v: Scopus-Elsevier

Objectives Several reports suggest that chronic pesticide exposure may affect semen quality and male fertility in humans. The objective of this study was to evaluate the association between occupational exposure to organophosphate (OP) and carbamate

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3eb387d72d9ed86daeea1a70a01349cd
https://pubmed.ncbi.nlm.nih.gov/23445617

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[Pesticide residues in drinking water of an agricultural community in the state of Mérida, Venezuela]

Autor: Mery Elisa, Flores-García, Yuri, Molina-Morales, Alirio, Balza-Quintero, Pedro Rafael, Benítez-Díaz, Leticia, Miranda-Contreras

Publikováno v: Investigacion clinica. 52(4)

The aim of this study was to determine the presence of pesticides in drinking water from six aqueducts in a region of intense agricultural activity in the state of Merida, Venezuela. The study was conducted for four continuous weeks, between May and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::f2a3df61ef233218dc388da3b3f5f436
https://pubmed.ncbi.nlm.nih.gov/22523840

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