Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99


Any time

2019 ( 15 )

2018 ( 46 )

2017 ( 39 )

2016 ( 65 )

Custom range...

Search Results: 1 - 10 of 34683 matches for " Estrada-Martínez "
All listed articles are free for downloading (OA Articles)
Page 1 /34683
Display every page Item
Toxoplasma gondii infection and abdominal hernia: evidence of a new association
Cosme Alvarado-Esquivel, Sergio Estrada-Martínez
Parasites & Vectors , 2011, DOI: 10.1186/1756-3305-4-112
Abstract: The seroprevalence of anti-Toxoplasma IgG antibodies and IgG titers was significantly higher in subjects with abdominal hernia repair than those without hernia. There was a tendency for subjects with hernia repair to have a higher seroprevalence of anti-Toxoplasma IgM antibodies than subjects without hernia. The seroprevalence of anti-Toxoplasma IgG antibodies in subjects with hernia repair was significantly higher in subjects ≥ 50 years old than those < 50 years old. Further analysis in subjects aged ≥ 50 years showed that the seroprevalence of anti-Toxoplasma IgG antibodies was also significantly higher in individuals with hernia repair than those without hernia (OR = 2.72; 95% CI: 1.10-6.57). Matching by age and sex further showed that the seroprevalence of Toxoplasma infection was significantly higher in patients with hernia repair than those without hernia (OR: 4.50; 95% CI: 1.22-17.33).Results indicate that infection with Toxoplasma is associated with abdominal hernia. The contributing role of infection with Toxoplasma in abdominal hernia was observed mainly in subjects aged ≥ 50 years old. Our results might have clinical, prevention and treatment implications and warrant for further investigation.The protozoan parasite Toxoplasma gondii (T. gondii) is widely distributed around the world [1,2]. Human infections with T. gondii occur by ingesting food or water that is contaminated with oocysts shed by cats or by eating undercooked or raw meat containing tissue cysts [2-4]. Infections with T. gondii may result in an asymptomatic state or lead to disease. The parasite disseminates within the host's body and may affect lymph nodes, eyes, central nervous system, and other tissues [3,5-9]. In addition, primary infection during pregnancy may lead to severe damage to the fetus [2,3]. We have explored the seroprevalence of and risk factors for T. gondii infection in some healthy [10-12] and ill [13-16] populations in Durango, Mexico. In a recent study in liver disease p
Toxoplasma gondii infection in workers occupationally exposed to unwashed raw fruits and vegetables: a case control seroprevalence study
Cosme Alvarado-Esquivel, Sergio Estrada-Martínez, Oliver Liesenfeld
Parasites & Vectors , 2011, DOI: 10.1186/1756-3305-4-235
Abstract: Subjects, numbering 200, who worked growing or selling fruits and vegetables, and 400 control subjects matched by age, gender, and residence were examined by enzyme immunoassays for the presence of anti-Toxoplasma IgG and IgM antibodies. Socio-demographic, clinical, and behavioral characteristics from the study subjects were obtained.Of the 200 fruit and vegetable workers, 15 (7.5%) of whom, and 31 (7.8%) of the 400 controls were positive for anti-Toxoplasma IgG antibodies (P = 0.96). Anti-Toxoplasma IgM antibodies were found in 2 (1%) of the fruit workers and in 11 (2.8%) of the control subjects (P = 0.23). Seroprevalence of Toxoplasma antibodies increased with age (P = 0.0004). In addition, seropositivity to Toxoplasma was associated with ill status (P = 0.04), chronic tonsillitis (P = 0.03), and reflex impairment (P = 0.03). Multivariate analysis showed that Toxoplasma infection was associated with consumption of raw meat (OR = 5.77; 95% CI: 1.15-28.79; P = 0.03), unwashed raw fruits (OR = 2.50; 95% CI: 1.11-5.63; P = 0.02), and living in a house with soil floors (OR = 3.10; 95% CI: 1.22-7.88; P = 0.01), whereas Toxoplasma infection was negatively associated with traveling abroad (OR = 0.28; 95% CI: 0.12-0.67; P = 0.005).This is the first report of seroprevalence and contributing factors for Toxoplasma infection in workers occupationally exposed to unwashed raw fruits and vegetables, and the results may help in the design of optimal preventive measures against Toxoplasma infection especially in female workers at reproductive age.Toxoplasma gondii (T. gondii) infects humans worldwide [1-3]. Infections with T. gondii may result in asymptomatic latent infections or lymph node, ocular, or central nervous system disease [1-3]. We have been studying the epidemiology of T. gondii infection in humans [4-9] and other animals [10,11] in Durango, Mexico. Occupational exposure to parasite tissue cysts [12,13] and oocysts [13,14] in some population groups has been evaluated.
Contribución al conocimiento etnomicológico de los hongos comestibles silvestres de mercados regionales y comunidades de la Sierra Nevada (México)
Estrada-Martínez,Emma; Guzmán,Gastón; Cibrián Tovar,David; Ortega Paczka,Rafael;
Interciencia , 2009,
Abstract: in this study, 67 species of wild edible mushrooms were studied, 65 of them were sold in four regional markets and some of them in communities, all on the sierra nevada found in the states of mexico, puebla, and tlaxcala, at e and ne of mexico city. the differential value of ethnomycological importance of the identified species was determined in terms of selling price as well as the presence and seasonality of the mushrooms, throughout one year, in 1998. also, preference for the edible mushrooms mentioned was recorded through a survey of 10 communities in this region, during 1999. of the mushrooms identified, hebeloma fastibile was the species of highest value in terms of ethnomycological importance in the markets and lyophyllum decastes was in the communities.
High seroprevalence of Toxoplasma gondii infection in a subset of Mexican patients with work accidents and low socioeconomic status
Cosme Alvarado-Esquivel, Alejandro Torres-Castorena, Oliver Liesenfeld, Sergio Estrada-Martínez, Jesús D Urbina-álvarez
Parasites & Vectors , 2012, DOI: 10.1186/1756-3305-5-13
Abstract: Eleven (8.3%) of 133 patients, and 14 (5.3%) of 266 controls had anti-T. gondii IgG antibodies. Anti-T. gondii IgG levels were higher than 150 IU/ml in 8 (6%) patients and 10 (3.8%) controls. Anti-T. gondii IgM antibodies were found in one (0.8%) of the workers, and in 6 (2.3%) of the controls. No statistically significant differences in the IgG seroprevalences, frequencies of high IgG levels, and IgM seroprevalences among patients and controls were found. In contrast, a low socio-economic level in patients with work accidents was associated with Toxoplasma seropositivity (P = 0.01). Patients with work accidents and low socioeconomic status showed a significantly (OR = 3.38; 95% CI: 0.84-16.06; P = 0.04) higher seroprevalence of T. gondii infection than controls of the same socioeconomic status (15.1% vs. 5%, respectively). Multivariate analysis showed a positive association of T. gondii infection with boar meat consumption (OR = 3.04; 95% CI: 1.03-8.94; P = 0.04). In contrast, a negative association between T. gondii infection and national trips (OR = 0.40; 95% CI: 0.17-0.96; P = 0.04), sausage consumption (OR = 0.20; 95% CI: 0.05-0.68; P = 0.01), and ham consumption (OR = 0.16; 95% CI: 0.05-0.51; P = 0.002) was found.In the study described here seropositivity to T. gondii was associated to work accidents in a subset of patients with low socioeconomic status. This is the first report of an association of T. gondii infection and work accidents. Further studies to confirm our results are needed. Results may help in designing optimal prevention strategies to avoid T. gondii infection.The parasite Toxoplasma gondii (T. gondii) infects humans and animals worldwide [1]. Major routes of infection with T. gondii include eating undercooked or raw meat containing tissue cysts, and ingesting food or water contaminated with oocysts [1,2]. The clinical spectrum of infection with T. gondii in humans varies from asymptomatic latent infection to severe disease affecting eyes, lymp
Toxoplasma gondii infection and liver disease: a case-control study in a Northern Mexican population
Cosme Alvarado-Esquivel, José Torres-Berumen, Sergio Estrada-Martínez, Oliver Liesenfeld, Miguel Mercado-Suarez
Parasites & Vectors , 2011, DOI: 10.1186/1756-3305-4-75
Abstract: Seroprevalence of anti-Toxoplasma IgG antibodies and IgG titers did not differ significantly in patients (10/75; 13.3%) and controls (16/150; 10.7%). Two (2.7%) patients and 5 (3.3%) controls had anti-Toxoplasma IgM antibodies (P = 0.57). Seropositivity to Toxoplasma did not show any association with the diagnosis of liver disease. In contrast, seropositivity to Toxoplasma in patients was associated with consumption of venison and quail meat. Toxoplasma seropositivity was more frequent in patients with reflex impairment (27.8%) than in patients without this impairment (8.8%) (P = 0.05). Multivariate analysis showed that Toxoplasma seropositivity in patients was associated with consumption of sheep meat (OR = 8.69; 95% CI: 1.02-73.71; P = 0.04) and rabbit meat (OR = 4.61; 95% CI: 1.06-19.98; P = 0.04).Seropositivity to Toxoplasma was comparable among liver disease patients and controls. Further studies with larger sample sizes are needed to elucidate the association of Toxoplasma with liver disease. Consumption of venison, and rabbit, sheep, and quail meats may warrant further investigation.Human infection with the protozoan parasite Toxoplasma gondii occurs worldwide [1,2]. Major routes of T. gondii infections include ingesting food or water that is contaminated with oocysts shed by cats or by eating undercooked or raw meat containing tissue cysts [2-4]. The clinical spectrum of T. gondii infection varies from an asymptomatic state to severe illness. The parasite can affect the host's lymph nodes, eyes, central nervous system, liver, and heart [3,5,6]. In liver, the parasite has been associated with a number of pathological changes including hepatomegaly, granuloma, hepatitis, and necrosis [7-14]. In addition, an epidemiological study has reported an association of T. gondii infection with liver cirrhosis [15]. However, epidemiological studies on the association of infection with T. gondii and liver disease are scarce, and have not been performed in Mexico. Therefor
Prevalencia de violencia doméstica en la ciudad de Durango
Alvarado-Zaldívar,Gloria; Salvador Moysén,Jaime; Estrada-Martínez,Sergio; Terrones-González,Alberto;
Salud Pública de México , 1998, DOI: 10.1590/S0036-36341998000600004
Abstract: objective. to characterize and determine the prevalence of the different types of gender-associated violence in the city of durango, mexico. material and methods. with a transversal design, 384 women residents of the city of durango, either living with or having lived with someone before, were interviewed. the sample was proportionately distributed in 6 city sectors which were randomly chosen and representative of the high middle and low socioeconomic levels. sixty-four interviews were conducted in each city sector. the questionnaire consisted of 184 closed and 22 open questions, including identification, sociodemographic and reproductive data, as well as specific questions on physical, emotional and sexual violence. results. median age of the studied group was 41.5 years, ranging from 12 to 48 years. prevalence of domestic violence was: sexual 42%; physical 40%; emotional 39%. conclusions. the problem of violence, in its different forms, is a highly prevalent factor wich jeopardizes the welfare of the family nucleus. higher prevalence values of domestic violence were detected in the presence of factors such as violence antecedents, alcoholism and/or drug consumption by some member of the family.
Prevalencia de violencia doméstica en la ciudad de Durango
Alvarado-Zaldívar Gloria,Salvador Moysén Jaime,Estrada-Martínez Sergio,Terrones-González Alberto
Salud Pública de México , 1998,
Abstract: Objetivo. Caracterizar y determinar, desde un enfoque de género, la prevalencia de los diferentes tipos de violencia que se presentan en la ciudad de Durango, Dgo., México. Material y métodos. Con un dise o transversal se entrevistaron 384 mujeres casadas, o bien, unidas al momento del estudio o alguna vez, residentes de la ciudad de Durango. El tama o de la muestra se distribuyó en forma proporcional en seis sectores de la ciudad, seleccionados al azar y representativos de los niveles socioeconómicos alto, medio y bajo. En cada sector se realizaron 64 entrevistas. El instrumento de medición fue un cuestionario con 184 preguntas cerradas y 22 abiertas, que incluía datos de identificación, sociodemográficos y reproductivos, así como reactivos específicos para la violencia física, emocional y sexual. Resultados. La mediana de edad del grupo estudiado fue de 41.5 a os, con un rango de 12 a 48 a os. La prevalencia de violencia doméstica fue: alguna forma de violencia sexual, 42%; física, 40%, y emocional, 39%. Conclusiones. Se reconoce que el problema de la violencia, en sus diferentes formas, es un hecho altamente prevalente que pone en peligro el bienestar del núcleo familiar. Se observó una mayor prevalencia de violencia doméstica en presencia de factores tales como: antecedente de violencia, alcoholismo y/o consumo de drogas en algún miembro de la familia.
Propiedades psicométricas de la CES-D/IS en población universitaria de la ciudad de Durango, México
Alberto Terrones-González,Sergio Estrada-Martínez,Angélica María Lechuga-Qui?ones,Jaime Salvador-Moysén
Salud mental , 2012,
Abstract: La depresión es un aspecto que constantemente se ha relacionado con la conducta suicida. La sintomatología depresiva ha sido evidenciada en varios estudios donde ha estado presente en adolescentes y jóvenes con pensamientos e intentos de suicidio. Por esta razón es de suma prioridad e interés el contar con un instrumento válido y confiable para la identificación y la medición de características relacionadas con la conducta autodestructiva en estudiantes universitarios. Objetivo Evaluar las propiedades psicométricas de la CES-D/IS, mediante su aplicación a estudiantes de nivel licenciatura de la Universidad Juárez del estado de Durango (UJED). Material y métodos El estudio incluyó a 943 estudiantes de 13 unidades académicas durante el periodo escolarizado de 2008. Se aplicó la escala CES-D/ IS. Se solicitó a los participantes el consentimiento informado y se les aseguró el manejo confidencial de los datos. Para medir la validez del instrumento se utilizó el análisis factorial exploratorio, se evaluó la consistencia interna mediante el coeficiente alfa de Cronbach, se emplearon estadísticos descriptivos, t de Student y U de Mann-Whitney para inferencias al 0.05. Los datos se procesaron con los paquetes estadísticos SPSS v15 y R v 2.7.2. Resultados La escala presentó una consistencia interna de =0.89. El índice resultó homogéneo cuando se analizó por área de estudio, edad ysexo. El análisis factorial mostró cuatro factores con el 45.5% de la varianza explicada. Conclusiones La escala CES-D/IS, presentó buenas propiedades tanto en su confiabilidad como en su validez.
Seroepidemiology of Toxoplasma gondii infection in pregnant women in a public hospital in northern Mexico
Cosme Alvarado-Esquivel, Antonio Sifuentes-álvarez, Sergio Narro-Duarte, Sergio Estrada-Martínez, Juan Díaz-García, Oliver Liesenfeld, Sergio Martínez-García, Arturo Canales-Molina
BMC Infectious Diseases , 2006, DOI: 10.1186/1471-2334-6-113
Abstract: Three hundred and forty three women seeking prenatal care in a public hospital of Durango City in Mexico were examined for T. gondii infection. All women were tested for anti-T. gondii IgM and IgG antibodies by using IMx Toxo IgM and IMx Toxo IgG 2.0 kits (Abbott Laboratories, Abbott Park, IL, USA), respectively. Socio-demographic, clinical and behavioural characteristics from each participant were also obtained.Twenty one out of the 343 (6.1%) women had IgG anti-T. gondii antibodies. None of the 343 women had IgM anti-T. gondii antibodies. Multivariate analysis using logic regression showed that T. gondii infection was associated with living in a house with soil floor (adjusted OR = 7.16; 95% CI: 1.39–36.84), residing outside of Durango State (adjusted OR = 4.25; 95% CI: 1.72–10.49), and turkey meat consumption (adjusted OR = 3.85; 95% CI: 1.30–11.44). Other characteristics as cat contact, gardening, and food preferences did not show any association with T. gondii infection.The prevalence of T. gondii infection in pregnant women of Durango City is low as compared with those reported in other regions of Mexico and the majority of other countries. Poor housing conditions as soil floors, residing in other Mexican States, and turkey meat consumption might contribute to acquire T. gondii infection.Toxoplasma gondii (T. gondii) is a protozoan parasite widely distributed around the world [1,2]. It has been estimated that up to one third of the world's population is infected by T. gondii [3]. This parasite is transmitted to humans mainly by ingesting food or water that is contaminated with oocysts shed by cats or by eating undercooked or raw meat containing tissue cysts [3-5]. Infections in humans are usually asymptomatic but in some infected persons cervical lymphadenopathy or ocular disease may occur [1,3]. However, primary infection acquired during pregnancy may result in severe damage to the foetus [3,6]. Manifestations of congenital toxoplasmosis include mental retard
Seroprevalence of selected viral, bacterial and parasitic infections among inpatients of a public psychiatric hospital of Mexico
Alvarado-Esquivel, Cosme;Arreola-Valenzuela, Miguel ángel;Rodríguez-Briones, Alfredo;Alanís-Qui?ones, Olga Patricia;Estrada-Martínez, Sergio;Luevanos-Becerra, Carlos;Martínez-Saenz, Luis Felipe;Martínez-García, Sergio Arturo;Ramírez-Valles, Eda Guadalupe;Ibarra-Torres, Isaac;González-Verdín, Cesar Arnulfo;
Revista do Instituto de Medicina Tropical de S?o Paulo , 2008, DOI: 10.1590/S0036-46652008005000001
Abstract: we sought to determine the frequency of serological markers of selected infections in a population of psychiatric patients in durango city, mexico, and to determine whether there are any epidemiological characteristics of the subjects associated with the infections. one hundred and five inpatients of a public psychiatric hospital of durango were examined for hbsag, anti-hcv antibodies, anti-hiv antibodies, anti-brucella antibodies, rapid plasma reagin and anti-cysticercus antibodies by commercially available assays. anti-cysticercus antibodies were confirmed by western blot and hbsag by neutralization assay. epidemiological data from each participant were also obtained. seroprevalences of hbsag, anti-hcv, anti-hiv, anti-brucella, rapid plasma reagin and anti-cysticercus antibodies found were 0.0%, 4.8%, 0.9%, 0.0%, 1.9%, and 0.9%, respectively. overall, 9 (8.6%) inpatients showed seropositivity to any infection marker. we concluded that our psychiatric inpatients have serological evidence of a number of infections. hcv is an important pathogen among our psychiatric inpatients. health care strategies for prevention and control of infections in mexican psychiatric patients should be considered.
Page 1 /34683
Display every page Item

Copyright © 2008-2017 Open Access Library. All rights reserved.