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au:Ramírez-Vargas, Marco Antonio

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El extracto acuoso de Retama sphaerocarpa induce daño citotóxico y genotóxico en células meristemáticas de Allium sativum
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Alejo-Martínez, Katia

; Espíritu-Sánchez, Héctor Javier

; Álvarez-Fitz, Patricia

; Moreno-Godínez, Ma. Elena

; Ramírez-Vargas, Marco Antonio

Manglar

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jul 2024, Volume 21 N. 3 Pages 371 - 376

Abstract: En Es | Text: En Es | PDF: En | PDF: Es

ABSTRACT: The ingestion of aqueous extracts from medicinal plants is frequently used in Mexico to treat various diseases. Retama sphaerocarpa (R. sphaerocarpa) is a medicinal plant. However, there needs to be more information about its toxic potential. For this reason, the present study evaluated the cytotoxic, genotoxic, and cytostatic effects of the aqueous extract of R. sphaerocarpa using meristematic cells of Allium sativum (A. Sativum). Root primordia from A. sativum bulblets were exposed for 72 h to 5 g/L or 10 g/L of R. sphaerocarpa aqueous extract. Root length, presence of chromosomal aberrations and mitotic division rate were determined. The results indicate that the aqueous extract of R. sphaerocarpa (5 g/L or 10 g/L) induces cytotoxic, genotoxic, and cytostatic damage predicting its possible toxicity and evidence of possible health risks associated with its consumption.

RESUMEN: En México la ingesta de extractos acuosos obtenidos a partir de plantas medicinales es un elemento frecuentemente utilizado para tratar diversas enfermedades. Existe poca o nula información sobre la evaluación del potencial tóxico de las plantas medicinales. Retama sphaerocarpa (R. sphaerocarpa) es una planta utilizada como una planta medicinal, sin embargo, existe poca información sobre su potencial tóxico. Por tal motivo, en el presente estudio se ha evaluado los efectos citotóxicos, genotóxicos y citostáticos del extracto acuoso de R. sphaerocarpa utilizando las células meristemáticas de Allium sativum (A. sativum). Los primordios radiculares de los bulbillos de A. sativum se expusieron por 72 h a 5 g/L o 10 g/L del extracto acuoso de R. sphaerocarpa, la longitud de raíz, la presencia de aberraciones cromosómicas y el índice de división mitótica fueron determinados. Los resultados indican que el extracto acuso de R. sphaerocarpa (5 g/L o 10 g/L) induce daño citotóxico, genotóxico y citostático indicando su posible toxicidad y evidencia el posible riesgo a la salud asociado a su consumo.

https://doi.org/10.57188/manglar.2024.040

Trends on deaths from acute pesticide poisoning in Mexico, 2000–2021
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Moreno-Godínez, Ma. Elena

; Flores-Alfaro, Eugenia

; Parra-Rojas, Isela

; Medina-Diaz, Irma Martha

; Rojas-García, Aurora Elizabeth

; Avilés-Ramírez, Cristian

; Campos-Viguri, Gabriela

; Ramírez-Vargas, Marco Antonio

Revista Brasileira de Epidemiologia

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2024, Volume 27 elocation e240001

Abstract: En Pt | Text: En Pt | PDF: En | PDF: Pt

ABSTRACT Objetive: To provide a comprehensive analysis of mortality trends from acute pesticide poisoning in Mexico from 2000 through 2021. Methods: The governmental records of deaths from acute pesticide poisoning were used. The age-standardized years of life lost and aged-standardized mortality rates were estimated. Significant changes in trends of annual percentage change were identified using Joinpoint regression. Results: Between 2000 and 2021, mortality was primarily observed in individuals aged 15 to 19 years. Males were the most affected. Self-inflicted pesticide poisoning was the primary registered reason for death. The age-standardized mortality rate from acute pesticide poisoning was reduced from 2012 to 2021 (APC: -4.4; p=0.003). Conclusion: This report is the first study about the mortality rate from acute pesticide poisoning in Mexico. The results provided evidence to consider in developing laws to prevent acute pesticide poisoning.

RESUMO Objetivo: Fornecer uma análise abrangente das tendências de mortalidade por envenenamento agudo por pesticidas no México de 2000 a 2021. Métodos: Foram usados os registros governamentais de mortes por envenenamento agudo por pesticidas. Foram estimados os anos de vida perdidos estandardizados por idade e as taxas de mortalidade estandardizados por idade. Modificações significativas nas tendências de variação percentual anual foram identificadas usando a regressão Joinpoint. Resultados: Entre 2000 e 2021, a mortalidade foi observada principalmente em indivíduos na faixa etária de 15 a 19 anos. Os homens foram os mais afetados. O envenenamento por pesticida autoinfligido foi o principal motivo de morte registrado. A taxa de mortalidade estandardizada por idade por intoxicação aguda por pesticidas foi reduzida de 2012 a 2021 (Annual Percent Change — APC: -4,4; p=0,003). Conclusão: Este relatório é o primeiro estudo sobre a taxa de mortalidade por intoxicação aguda por pesticidas no México. Os resultados forneceram evidências a serem consideradas no desenvolvimento de leis para prevenir o envenenamento agudo por pesticidas.

https://doi.org/10.1590/1980-549720240001

Trends on deaths from acute pesticide poisoning in Mexico, 2000–2021 Mexico 20002021 2000 2021 2000–202 2000202 200 202 2000–20 200020 20 2000–2 20002 2 2000–
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Moreno-Godínez, Ma. Elena

; Flores-Alfaro, Eugenia

; Parra-Rojas, Isela

; Medina-Diaz, Irma Martha

; Rojas-García, Aurora Elizabeth

; Avilés-Ramírez, Cristian

; Campos-Viguri, Gabriela

; Ramírez-Vargas, Marco Antonio

Revista Brasileira de Epidemiologia

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2024, Volume 27 elocation e240001

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

https://doi.org/10.1590/1980-549720240001

Diferencias en la gravedad del choque hemorrágico en mujeres con placenta previa y acretismo placentario antes y durante la pandemia de COVID-19
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Nares Torices, Miguel Ángel

; Hernández Pacheco, José Antonio

; Ramírez Calvo, José Antonio

; Flores Cortés, Mildred

; Becerra Navarro, Norma Patricia

; Martínez Hueyopa, Heidi Guadalupe

; Balladares Nava, Elisa Madai

; Serna-Castellanos, Karla Estela

; Brito Brito, Benjamín

; Vila Herrera, Salvador

; Rangel Vargas, Uriel Emmanuel

; Auqui Valarezo, Sandra Verónica

; Mota Calzada, Javier

Medicina crítica (Colegio Mexicano de Medicina Crítica)

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2023, Volume 37 N. 1 Pages 31 - 34

Abstract: Es En Pt | Text: Es En Pt | PDF: Es | PDF: En | PDF: Pt

Resumen: Introducción: estudios previos han mostrado una mayor incidencia de todas las causas de hemorragia postparto durante la pandemia de COVID-19. El acretismo placentario es una causa frecuente de hemorragia postparto. Objetivo: determinar las diferencias en la severidad del choque hemorrágico y la cantidad de sangrado en mujeres con diagnóstico del espectro placenta previa-acretismo, antes de la pandemia y durante la pandemia por COVID-19. Material y métodos: en un estudio con cohortes comparativas de mujeres con placenta previa-acretismo, atendidas en el Instituto Nacional de Perinatología, durante el periodo de enero de 2017 a diciembre de 2019, grupo I (prepandemia), y de enero de 2020 a marzo de 2022, grupo II (pandemia), se comparó entre los grupos la cantidad de hemorragia y la clase del choque hemorrágico de acuerdo a ATLS. Resultados: se estudió a 277 mujeres, 211 fueron del grupo I (pre-COVID-19) y 66 del grupo II (COVID-19), se observó una mayor cantidad de sangrado durante la pandemia de COVID versus la fase pre-COVID (2,150.56 ± 1,910.08 mL versus 1,246.34 ± 1,494.1 mL) p = 0.001, existieron diferencias en las proporciones de la gravedad del choque hemorrágico en la fase de pandemia para las clases III y IV. Conclusión: se encontró un incremento en la cantidad de sangrado y gravedad del choque durante la pandemia de COVID-19.

Abstract: Introduction: previous studies have shown an increased incidence of all-cause postpartum hemorrhage during the COVID-19 pandemic. Placental accreta is a frequent cause of hemorrhagic shock. Objective: determine the severity of shock and the amount of bleeding during the COVID-19 pandemic in women diagnosed with placenta previa and placental accreta. Material and methods: in a comparative cohort study of women with placenta previa and accreta treated at the National Institute of Perinatology during the period from January 2017 to December 2019 group I (pre-pandemic) and from January 2020 to March 2022 group II (pandemic) the amount of hemorrhage and the class of hemorrhagic shock according to ATLS were compared between the groups. Results: 277 women were studied, 211 were from group I (pre COVID-19) and 66 from group II (COVID-19). A greater amount of bleeding was observed during the COVID pandemic versus the pre COVID phase (2,150.56 ± 1,910.08 mL vs 1,246.34 ± 1,494.1 mL) p = 0.001, there were differences in the proportions of severity of hemorrhagic shock in the pandemic phase for classes III and IV. Conclusion: an increase in the amount of bleeding and severity of shock was found during the COVID-19 pandemic.

Resumo: Introdução: estudos anteriores mostraram uma maior incidência de hemorragia pós-parto de todas as causas durante a pandemia de COVID-19. O acretismo placentário é uma causa frequente de hemorragia pós-parto. Objetivo: determinar as diferenças na gravidade do choque hemorrágico e na quantidade de sangramento em mulheres diagnosticadas com o espectro de placenta prévia-acretismo antes da pandemia e durante a pandemia de COVID-19. Material e métodos: em um estudo de coorte comparativo de mulheres com placenta prévia e acreta tratadas no Instituto Nacional de Perinatologia durante o período de janeiro de 2017 a dezembro de 2019, grupo I (pré-pandemia) e de janeiro de 2020 a março de 2022, grupo I II (pandemia) a quantidade de sangramento e a classe de choque hemorrágico de acordo com o ATLS foram comparadas entre os grupos. Resultados: foram estudadas 277 mulheres, 211 eram do grupo I (pré-COVID-19) e 66 do grupo II (COVID-19). Observou-se uma maior quantidade de sangramento durante a pandemia de COVID versus a fase pré-COVID (2,150.56 ± 1,910.08 mL vs 1,246.34 ± 1,494.1 ml) p = 0.001, houve diferenças nas proporções da gravidade do choque hemorrágico na fase pandêmica para as classes III e IV. Conclusão: um aumento na quantidade de sangramento e gravidade do choque foi encontrado durante a pandemia de COVID-19.

https://doi.org/10.35366/109960

Code infarction initiative of Bajio region, during the pandemic by COVID-19 in a reconversion hospital
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Villar-Valencia, Cristian Adrián

; Hernández-González, Martha Alicia

; Borrayo-Sánchez, Gabriela

; Celis-Quintal, Juan German

; Solorio-Meza, Sergio Eduardo

; Medina-Torres, Oscar Samuel

; Gutiérrez-Galván, Maraí Xochitl

; Rodríguez-Martínez, Braulio

; Prado-Rodríguez, Luis Humberto

; Vázquez-Morones, Ana Laura

; Alatoma-Medina, Juan Pablo

; Hernández-Estala, Jorge

; Patiño-Amaya, Aristóteles

; Magdaleno-Serrano, Hugo Ivan

; Rodríguez-Déniz, Carmen

; Arellano-Sotelo, Hugo

; Nava-Hernández, Guillermo

; Ramírez-Vázquez, Ricardo

; Chimal-Flores, Marco Antonio

; Alegría-Peredia, Emiliano

; Ramos-González, Gerardo Rubén

; Pérez-Benítez, Rigoberto

; Bermúdez-Acévez, Erik

; Valencia-Martínez, Hypatia

; Segovia-Solís, Hugo

; López-Varela, Manuel

; Monroy-Córdoba, Doryan

; Marmolejo-López, Adriana

; Báez-Montes, Alfredo

; Hernández-Cerqueda, Fabián

; Nolasco-Muñoz, Luis Ricardo

; Vargas-Ramírez, Luis Manuel

; Celis-Quintal, Juan German

; Bernal-Ruíz, Enrique Alfredo

; Delgado-Sánchez, Anabella

; Sánchez-López, José Manuel

; Bautista-López, Germán Ramón

; Acevedo-Gómez, Pablo Francisco

; Acuña-Valerio, Jorge Francisco

; González-Ortíz, Oracio

; Hernández-Padilla, Adolfo Asahel

; Solórzano-Vázquez, Marco Alejandro

; Franco-Herrera, Noel

; González, Luis Jonathan

; Reyes-Álvarez, José Miguel

; Salinas-Cavazos, Iván Rosendo

; Tiscareño-Villanueva, Ashby Daniel

; Vidrio-Villaseñor, Ramiro

; Fernández-Yáñez, Gabriel

; Meza, Ma. Guadalupe

; Nucamendi-Solórzano, Freeman Issac

; Sandoval-Uribe, José de Jesús

; Sotelo-García, Luis David

; Zamoaya-Paz, Luis Carlos

; Espriu, Donovan Fernando

; García-Rodríguez, Román

; López-Ibarra, Daniel Eugenio

; López-Valencia, Andrea Janeth

; Villar-Valencia, Cristian Adrián

; Navarro-Pérez-Macedo, Javier

Cardiovascular and metabolic science

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sep 2022, Volume 33 N. 3 Pages 97 - 105

Abstract: En Es | Text: En Es | PDF: En | PDF: Es

Abstract: Introduction: Acute myocardial infarction has a high prevalence and possibility of death if timely care is not given. It is possible that treatment could be delayed during a health crisis such as the COVID-19 pandemic. Objective: The objective of this study was to evaluate the impact of the COVID-19 pandemic on the function of the infarction code in the High Specialty Medical Unit of our institution. The medical indicators of acute coronary ischemic syndrome with ST-segment elevation were compared at two times: before the COVID-19 pandemic and during it. Material and methods: An ambispective, analytical, comparative cohort study was conducted, comparing the periods of February-September 2019 and February-September 2020, in the High Specialty Medical Unit, Centro Médico del Bajío number 1, Instituto Mexicano del Seguro Social, Leon, Guanajuato, Mexico. All patients older than 18 years with clinical, electrocardiographic, and enzymatic data of acute coronary ischemic syndrome, accepted in the medical network as infarction code registered in the National Registry of Acute Coronary Ischemic Syndromes (RENASCA) electronic case report form were included in the study. Results: The independent samples t-test was used to determine the impact of the infarction code initiative based on the reperfusion therapies performed, the door-to-needle, the door-to-balloon time, and the ischemia time. There was a significant difference in the reperfusion strategy, with greater thrombolysis during the COVID-19 pandemic (57.4% versus 72.6%, odds ratio [OR] 1.97, 95% confidence interval [CI] 0.49-0.82, p < 0.001), as well as reperfusion criteria (21.03% versus 35.37%, OR 2.05, 95% CI 0.53-0.80, p < 0.0001). Mortality was not different between the time periods. Conclusions: The COVID-19 pandemic has not impacted operation of the infarction code in the High Specialty Medical Unit Centro Médico del Bajío number 1 because the medical indicators of acute coronary ischemic syndrome with ST-segment elevation did not change.

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https://doi.org/10.35366/107622

Paraoxonasa 1 y su relación con factores de riesgo en fumigadores del estado de Guerrero: estudio preliminar
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Granados-García, Isis Beatriz

; Armendáriz-Arnez, Cynthia

; Nicasio-Arzeta, Sergio

; Huerta-Beristáin, Gerardo

; Ramírez-Vargas, Marco Antonio

; Moreno-Godínez, Ma. Elena

Revista internacional de contaminación ambiental

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2022, Volume 38 elocation 54224

Abstract: En Es | Text: En Es | PDF: En | PDF: Es

ABSTRACT Organophosphate pesticides (OP) are widely used for the control of pests and vector-borne diseases by state and national governments. However, these compounds can cause acute and chronic intoxication, and diverse factors play a relevant role in their toxicity. One such factor is paraoxonase 1 (PON1), a protein that hydrolyzes OP and protects the body from toxicity. The objective of this study was to assess the serum concentration of PON1 and its relationship with risk factors in a population of fumigators from the state of Guerrero, in Mexico. A cross-sectional study was conducted with 67 fumigators and a control group of 46 non-fumigators. A survey instrument was applied to capture the labor practices and pesticides used, and anthropometric and biochemical measurements were determined. Serum concentration of PON1 was quantified by enzyme-linked immunoassay (ELISA). The results show that most of the fumigators use carbamates (38 %) and OP (32 %) pesticides. The PON1 concentrations were 21.2 ng/mL in the fumigators vs. 18.7 ng/ml in the control group. We also found that body mass index, diabetes history, time in years that the worker reports carrying out the pesticide fumigation, the number of pesticides used, and the consumption of alcohol, vitamins and food supplements were risk factors associated with PON1 concentration shifts. It is necessary to consider the intrinsic and extrinsic factors of individuals when evaluating PON1 levels in populations exposed to pesticides.

RESUMEN Los plaguicidas organofosforados (OF) son ampliamente utilizados para el control de plagas y vectores transmisores de enfermedades por gobiernos estatales y nacionales. Sin embargo, se sabe que estos compuestos pueden causar intoxicaciones agudas y crónicas, y que diversos factores desempeñan un papel relevante en su toxicidad. Uno de ellos es la paraoxonasa 1 (PON1), una proteína que hidroliza los plaguicidas OF y protege al organismo de su toxicidad. El objetivo de este estudio fue valorar la concentración sérica de PON1 y su relación con factores de riesgo que pueden modificar la concentración de la enzima en una población de fumigadores guerrerenses. Se realizó un estudio de corte transversal con 67 fumigadores y 46 en el grupo testigo. Se aplicó un instrumento para conocer sus prácticas laborales, plaguicidas utilizados y medidas antropométricas. Las concentraciones séricas de PON1 fueron cuantificadas por enzimoinmunoanálisis de adsorción (ELISA, por su sigla en inglés). Los resultados mostraron que los fumigadores utilizan principalmente carbamatos (38 %) y OF (32 %). Las concentraciones de PON1 fueron de 21.2 ng/mL en los fumigadores vs. 18.7 ng/ml en el grupo testigo. Encontramos que el índice de masa corporal, los antecedentes de diabetes, la antigüedad en la labor de fumigación, el número de plaguicidas utilizados y el consumo de alcohol, vitaminas y suplementos alimenticios son factores de riesgo asociados a los cambios en la concentración de PON1. Es necesario considerar los factores intrínsecos y extrínsecos de los individuos cuando se evalúan los niveles de PON1.

https://doi.org/10.20937/rica.54224

Clinical and Epidemiological Characteristics of Patients Diagnosed with COVID-19 in a Tertiary Care Center in Mexico City: A Prospective Cohort Study
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Ortiz-Brizuela, Edgar

; Villanueva-Reza, Marco

; González-Lara, María F.

; Tamez-Torres, Karla M.

; Román-Montes, Carla M.

; Díaz-Mejía, Bruno A.

; Pérez-García, Esteban

; Olivas-Martínez, Antonio

; Rajme-López, Sandra

; Martinez-Guerra, Bernardo A.

; León-Cividanes, Nereyda A. de

; Fernández-García, Oscar A.

; Guerrero-Torres, Lorena

; Torres-González, Lorena

; Carrera-Patiño, Fabián A.

; Corral-Herrera, Ever A.

; Hernández-Alemón, Aldo N.

; Tovar-Vargas, Maria de los Ángeles

; Serrano-Pinto, Yamile G.

; Espejo-Ortiz, Cristian E.

; Morales-Ortega, María de la L.

; Lozano-Cruz, Óscar A.

; Cárdenas-Fragoso, José L.

; Vidal-Mayo, José de J.

; Hernández-Gilsoul, Thierry

; Rivero-Sigarroa, Eduardo

; Domínguez-Cherit, Guillermo

; Cervantes-Villar, Luz E.

; Ramos-Cervantes, Maria del P.

; Ibarra-González, Violeta

; Calva-Mercado, Juan J.

; Sierra-Madero, Juan G.

; López-Íñiguez, Álvaro

; Ochoa-Hein, Eric

; Crabtree-Ramírez, Brenda E.

; Galindo-Fraga, Arturo

; Guerrero-Almeida, María de L.

; Ruiz-Palacios, Guillermo M.

; Gulías-Herrero, Alfonso

; Sifuentes-Osornio, José

; Kershenobich-Stalnikowitz, David

; Ponce-de-León, Alfredo

Revista de investigación clínica

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jun 2020, Volume 72 N. 3 Pages 165 - 177

Abstract: En | Text: En | PDF: En

ABSTRACT Background: Regional information regarding the characteristics of patients with coronavirus disease (COVID)-19 is needed for a better understanding of the pandemic. Objective: The objective of the study to describe the clinical features of COVID-19 patients diagnosed in a tertiary-care center in Mexico City and to assess differences according to the treatment setting (ambulatory vs. hospital) and to the need of intensive care (IC). Methods: We conducted a prospective cohort, including consecutive patients with COVID-19 from February 26, 2020 to April 11, 2020. Results: We identified 309 patients (140 inpatients and 169 outpatients). The median age was 43 years (interquartile range, 33-54), 59.2% men, and 18.6% healthcare workers (12.3% from our center). The median body mass index (BMI) was 29.00 kg/m2 and 39.6% had obesity. Compared to outpatients, inpatients were older, had comorbidities, cough, and dyspnea more frequently. Twenty-nine (20.7%) inpatients required treatment in the IC unit (ICU). History of diabetes (type 1 or 2) and abdominal pain were more common in ICU patients compared to non-ICU patients. ICU patients had higher BMIs, higher respiratory rates, and lower room-air capillary oxygen saturations. ICU patients showed a more severe inflammatory response as assessed by white blood cell count, neutrophil and platelet count, C-reactive protein, ferritin, procalcitonin, and albumin levels. By the end of the study period, 65 inpatients had been discharged because of improvement, 70 continued hospitalized, and five had died. Conclusions: Patients with comorbidities, either middle-age obese or elderly complaining of fever, cough, or dyspnea, were more likely to be admitted. At admission, patients with diabetes, high BMI, and clinical or laboratory findings consistent with a severe inflammatory state were more likely to require IC.

https://doi.org/10.24875/ric.20000211 533 downloads

The MHC2TA gene polymorphisms are not associated with restenosis after coronary stenting in Mexican patients
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Delgadillo, Hilda

; Vargas-Alarcón, Gilberto

; Gómez-Monterrosas, Omar

; Martínez-Rodríguez, Nancy

; Ramírez-Fuentes, Silvestre

; Carrillo-Sánchez, Silvia

; Peña-Duque, Marco Antonio

; Martínez-Ríos, Marco Antonio

; Pérez-Méndez, Oscar

; Fragoso, José Manuel

Archivos de cardiología de México

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sep 2012, Volume 82 N. 3 Pages 208 - 213

Abstract: En Es | Text: En Es | PDF: En | PDF: Es

Objective: The aim of this study was to test for association between MHC2TA gene polymorphisms and risk for restenosis after coronary stent placement in a group of Mexican patients. Methods: The MHC2TA-168A>G (rs3087456), 1614C>G (rs4774), and 2536G>A (rs2229320) single nucleotide polymorphisms were genotyped using 5' exonuclease TaqMan genotyping assays in a group of 202 patients, who underwent coronary artery stenting. Basal and procedure coronary angiography were analyzed, looking for angiographic predictors of restenosis and follow-up angiography was performed to screen for binary restenosis. Results: The results obtained in this study showed that the frequency of the three polymorphisms studied was similar in patients with and without restenosis. Univariate analysis showed that the use of drug-eluting stent (DES) reduces the risk of developing restenosis (p < 0.001, OR = 0.26). In contrast, the diameter< 2.5 mm of the stent and bifurcations increased the risk of developing restenosis (p = 0.049, OR = 1.74 and p = 0.041, OR = 1.8). Conclusion: The present study suggests that the MHC2TA polymorphisms are not involved in the risk of developing restenosis after coronary stent placement.

Objetivo: El propósito de este estudio fue evaluar la asociación de los polimorfismos del gen MHC2TA y el riesgo de desarrollar reestenosis, después del implante de stent coronario en un grupo de pacientes mexicanos. Métodos: Los polimorfismos de un solo nucleótido MHC2TA-168A>G (rs3087456), 1614C>G (rs4774) y 2536G>A (rs2229320), se determinaron en un grupo de 202 pacientes tratados con stent coronario. Los polimorfismos fueron evaluados utilizando ensayos de genotipificacion Taq-Man 5' exonucleasa. El procedimiento basal y la búsqueda de predictores de reestenosis fueron analizados por medio de angiografía coronaria, y seguimiento angiográfico con el fin de detectar reestenosis binaria. Resultados: Los resultados obtenidos en este estudio mostraron que la distribución génica de los tres polimorfismos estudiados fue muy similar, en pacientes con o sin reestenosis. Sin embargo, el análisis univariado mostró que el uso de los stent medicados reducen el riesgo de desarrollar reestenosis (p < 0.001, OR = 0.26). En contraste, con las bifurcaciones y el diámetro < 2.5 mm del stent que se incrementa el riesgo de desarrollar reestenosis (p = 0.049, OR = 1.74 y p = 0.041, OR = 1.8). Conclusión: El presente estudio sugiere que los polimorfismos del gen MHC2TA no están asociados con el riesgo de desarrollar reestenosis, después del implante de stent coronario.

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FPGA Implementation of Fuzzy Mamdani System with Parametric Conjunctions Generated by Monotone Sum of Basic t-Norms
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Cortés Antonio, Prometeo

; Batyrshin, Ildar

; Molina Lozano, Herón

; Ramírez Salinas, Marco Antonio

; Villa Vargas, Luis

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dec 2011, N. 44 Pages 53 - 58

Abstract: En | Text: En | PDF: En

The paper presents the results of FPGA implementation of fuzzy Mamdani system with parametric conjunctions generated by monotone sum of basic t-norms. The system is implemented on the DE2 Altera development board using VHDL language. The system contains reconfigurable fuzzy Mamdani model with parametric membership functions and parametric operations that gives possibility to adjust the system to specific application.

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