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OBJECTIVE: To evaluate the risk of IgE sensitization and symptoms to shrimp in a population that has received AIT with polymerized mite extract. METHODS: Patients with allergic rhinitis sensitized to dust mites (Dermatophogides spp) with an indication for mite AIT were included. Those patients who had not yet received AIT or had received less than 6 doses were included as controls and those who had received more than 24 doses of AIT were included as cases. Sensitization to shrimp was assessed by skin prick test with complete shrimp extract and/or shrimp-specific IgE. RESULTS: A total of 68 patients were included; 47 cases and 21 controls. When calculating the odds ratio of sensitization according to time with immunotherapy we observed that there were no differences between the group of cases and controls (OR 0.76 95% CI 0.26 to 2.22 p 0.7 by MacNemar technique). Factors such as consumption or not of shrimp and frequency of consumption do not seem to be related to the outcome. CONCLUSION: In contrast to what was reported with aqueous extracts, we observed that AIT with polymerized extracts is not a risk factor for shrimp sensitization. It is necessary to reproduce these results with a larger sample size to explore other factors.
OBJETIVO: Evaluar el riesgo de sensibilización IgE y síntomas a camarón en una población que ha recibido AIT con extracto polimerizado para ácaros. MÉTODOS: Se incluyeron pacientes con rinitis alérgica sensibilizados a ácaros del polvo (Dermatophogides spp) con indicación de AIT para ácaros. Aquellos pacientes que no habían aún recibido AIT o llevaban menos de seis dosis, fueron incluidos como controles, y aquellos que llevaban más de 24 dosis de AIT, fueron incluidos como casos. Se evaluó la sensibilización a camarón mediante prueba cutánea con extracto completo de camarón y/o IgE específica a camarón. RESULTADOS: En total, 68 pacientes fueron incluidos; 47 casos y 21 controles. Al calcular el odds ratio de la sensibilización de acuerdo al tiempo con la inmunoterapia, observamos que no había diferencias entre el grupo de casos y controles (OR 0,76 95% IC 0,26 a 2,22 p 0,7 por técnica de MacNemar). Factores como el consumo o no de camarón y la frecuencia de consumo, no parecen estar relacionados con el desenlace. CONCLUSIÓN: A diferencia de lo reportado con extractos acuosos, observamos de AIT con extractos polimerizados para no es un factor de riesgo para la sensibilización a camarón. Es necesario reproducir estos resultados con un mayor tamaño de muestra que permita explorar otros factores.
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Desensibilización Inmunológica , Penaeidae , Pyroglyphidae , Humanos , Animales , Masculino , Femenino , Pyroglyphidae/inmunología , Adulto , Penaeidae/inmunología , Adolescente , Adulto Joven , Niño , Persona de Mediana Edad , Polimerizacion , Rinitis Alérgica/terapia , Antígenos Dermatofagoides/inmunología , Inmunoglobulina E/inmunologíaRESUMEN
Particulate matter (PM) has been associated with adverse effects on human health, causing allergies, skin and eye irritation and corrosion, respiratory tract irritation, headaches, bronchoconstriction, cardiopulmonary diseases such as asthma, chronic obstructive pulmonary disease (COPD), lung cancer, reproductive problems, premature deaths, and epigenetic changes that lead to a wide variety of cancers, among other health conditions. The air quality in the Medellín - Colombia presents fluctuations that oscillate between the maximum permissible levels established at the national level and by the WHO, which represents a latent risk to people's health. Although important efforts have been made to quantify the different levels of pollution and administrative measures have been established to mitigate air pollution, little research work has been done to establish the relationship between these levels of pollutants and the effects on biological systems. The objective of the present research was to make a morphological and chemical characterization of particulate matter (PM) captured with a commercial air filter and a electrospun nanofiber membrane and evaluate the cytotoxicity of the each PM extracts in monolayer and co-culture models which recreate microphysiological systems of lung, skin and cornea and propose the possible cellular interactions that lead the cytotoxic response of the chemical compounds found in particulate matter in cities. The morphology and elemental chemical characterization were done with scanning electron microscopy coupled with energy dispersive X-ray spectroscopy (SEM - EDS). For the polycyclic aromatic hydrocarbons detection was made with a chromatographic method accoupled to mass spectrometer. Finally, the cytotoxicity was made in monolayers of A549, HEK001, and SIRC cell lines and microphysiological systems consisting of two-cell layer construct to resemble the interaction between fibroblast and epithelial cells that comprises naturally the corneal, skin and lung tissue. We performed three different cocultures models with BALB/3T3 clone A31 as a feeder layer, using porous Transwell® inserts in the in-contact and non-contact way. Monolayer and co-culture models were exposed to coarse and fine PM (1, 2, and 5 mg/mL) and the cell viability was evaluated at 24 h using an MTT assay. The electrospun nanofibers membranes demonstrates higher efficiency to capture PM with different sizes and high concentration of polycyclic aromatic hydrocarbons, heavy metals, and other chemical compounds responsible of many human diseases. Cytotoxic effects of MP were observed in all models at higher concentration; however, models exposed to fine PM exhibited a significant reduction in cell viability compared to those exposed to coarse PM. In addition, multilayer models are more resistant to PM exposure than monolayer models. Furthermore, the study indicated that, depending on the seeding strategy, different results might be observed: the non-contact model showed higher resistance to PM exposure than in-contact for SIRC and HEK001, but A549 monolayers showed the highest viability response. This study demonstrates the usefulness of applying co-culture models to assess environmental pollutant toxicity, in addition to being a potential alternative method to animal testing for risk assessment.
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Contaminantes Atmosféricos , Contaminantes Ambientales , Hidrocarburos Policíclicos Aromáticos , Animales , Humanos , Material Particulado/toxicidad , Contaminantes Atmosféricos/toxicidad , Contaminantes Atmosféricos/análisis , Sistemas Microfisiológicos , Pulmón/metabolismo , Contaminantes Ambientales/análisis , Córnea , Hidrocarburos Policíclicos Aromáticos/toxicidadRESUMEN
Self-limited epilepsy with autonomic seizures, formerly known as benign occipital epilepsy of childhood or Panayiotopoulos syndrome is a focal epilepsy that is part of the epileptic syndromes with onset during childhood. The objective of this report is to raise awareness about its importance and describe the clinical manifestations, timely diagnosis, and treatment. A pediatric patient admitted with gastrointestinal manifestations is presented. The autonomic manifestations must be considered as part of the clinical spectrum that includes this disease and the digestive and autonomic manifestations that mask the diagnosis, sometimes even in the absence of motor seizures themselves. Electroencephalographic confirmation was performed, avoiding cataloging it in other differential diagnoses.
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Artificial intelligence methods using unsupervised learning tools can support problem solving by establishing unidentified grouping or classification patterns that allow typing subgroups for more individualized management. There are few studies that allow us to know the influence of digestive and extra-digestive symptoms in the classification of functional dyspepsia. This research carried out a cluster unsupervised learning analysis based on these symptoms to discriminate subtypes of dyspepsia and compare with one of the currently most accepted classifications. An exploratory cluster analysis was carried out in adults with functional dyspepsia according to digestive, extra-digestive and emotional symptoms. Grouping patterns were formed in such a way that within each group there was homogeneity in terms of the values adopted by each variable. The cluster analysis method was two-stage and the results of the classification pattern were compared with one of the most accepted classifications of functional dyspepsia. Of 184 cases, 157 met the inclusion criteria. The cluster analysis excluded 34 unclassifiable cases. Patients with type 1 dyspepsia (cluster one) presented improvement after treatment in 100% of cases, only a minority presented depressive symptoms. Patients with type 2 dyspepsia (cluster two) presented a higher probability of failure to treatment with proton pump inhibitor, suffered more frequently from sleep disorders, anxiety, depression, fibromyalgia, physical limitations or chronic pain of a non-digestive nature. This classification of dyspepsia by cluster analysis establishes a more holistic vision of dyspepsia in which extradigestive characteristics, affective symptoms, presence or absence of sleep disorders and chronic pain allow discriminating behavior and response to first-line management.
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Dolor Crónico , Dispepsia , Adulto , Humanos , Dispepsia/diagnóstico , Inteligencia Artificial , Aprendizaje Automático no Supervisado , Dolor Abdominal/diagnóstico , Dolor Abdominal/etiología , Análisis por ConglomeradosRESUMEN
INTRODUCTION: Perianal fistulizing Crohn's disease (CD) is a phenotype with a poor prognosis. There are no studies in our country. Our objective is to determine the clinical, sociodemographic and treatment characteristics of perianal fistulizing CD in a Colombian multicenter registry. MATERIALS AND METHODS: A retrospective, multicenter observational study was carried out, with prospective data collection, in the main reference centers for inflammatory Bowel disease (IBD) in the country. Continuous variables were expressed as medians and interquartile ranges. The categorical outcome variables were compared by the Chi-square test. RESULTS: Sixty-five patients with perianal fistulizing CD were documented, with a median age of appearance of perianal fistula of 31.0 years (range: 24-42), predominantly in men (61.5%; H:M ratio: 1.4:1). Complex perianal fistulas were more frequent than simple ones (75.35 vs. 24.6%). Regarding medical treatment, 66.2% of the patients received antibiotics, 64.6% steroids, 78.5% biological therapy, 47.7% non-cutting setons, and 46.2% required surgical management, other than seton placement. Only 29.2% achieved complete remission of the fistula, and 9.2% of the patients ended up in a definitive colostomy. CD patients with complex fistulas received more biological therapy, compared to CD patients with simple fistulas (84.8 vs. 56.3%; P: 0.038). CONCLUSIONS: Perianal fistulizing CD has a poor prognosis in our setting, only 3 out of 10 patients achieve complete remission despite treatment. A multidisciplinary management is essential for the comprehensive management of this difficult pathology.
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Enfermedad de Crohn , Fístula Rectal , Humanos , Infliximab/uso terapéutico , Enfermedad de Crohn/terapia , Enfermedad de Crohn/tratamiento farmacológico , Colombia , Estudios Retrospectivos , Anticuerpos Monoclonales/uso terapéutico , Resultado del Tratamiento , Terapia Combinada , Fístula Rectal/etiología , Fístula Rectal/terapia , Sistema de RegistrosRESUMEN
Introducción. Toxoplasma gondii es un parásito con gran potencial zoonótico que puede infectar un amplio rango de huéspedes de sangre caliente, incluidos los animales del sector pecuario, lo que causa pérdidas a la industria. En el humano, es patógeno en personas inmunosuprimidas y afecta el desarrollo del feto en infecciones congénitas. Además, se asocia con diversos trastornos del comportamiento en personas sanas. El humano puede adquirir T. gondii al consumir carnes contaminadas mal cocidas. Objetivo. Determinar la positividad de T. gondii en carnes de consumo humano (res, pollo y cerdo) en Ibagué, Colombia. Materiales y métodos. Se utilizó la PCR convencional anidada y la secuencia del gen B1 de T. gondii como blanco de amplificación. Se tomaron 186 muestras de carne comercializada en la zona urbana de Ibagué (62 de res, 62 de pollo y 62 de cerdo) y se obtuvo el porcentaje de positividad en cada tipo de carne evaluada. Resultados. Se encontró un porcentaje de positividad de 18,8 % en las muestras, siendo la carne de cerdo la del mayor porcentaje (22,5 %; 14/62), seguida por las muestras de carne de res (19,3 %; 12/62) y de pollo (14,5 %; 9/62). Los mejores productos amplificados fueron secuenciados en Macrogen, y alineados con las secuencias del gen B1 depositadas en el GenBank, con lo que se confirmó su identidad. Conclusiones. Este es el primer estudio sobre prevalencia de T. gondii en carnes para consumo humano en Ibagué y el departamento del Tolima. Se demostró que los tres tipos de carne representan un riesgo para la infección en humanos a nivel local.
Introduction: Toxoplasma gondii is a parasite with great zoonotic potential. It can infect a broad range of warm-blooded hosts (including livestock) and causes significant losses in the industry. In humans, it has been described as a pathogen in immunosuppressed people, it affects the fetus development in congenital infections, and is associated with various behavioral disorders in healthy people. Humans can acquire T. gondii by consuming undercooked, contaminated meat. Objective: To determine T. gondii positivity (currently unknown) in meat for human consumption (i.e., beef, chicken, and pork) in the city of Ibague, Colombia. Materials and methods: We used conventional nested PCR and the T. gondii B1 gene sequence as amplification target. We collected samples of meat (N=186) sold in the urban area of Ibagué (62 beef, 62 chicken, and 62 pork samples) and determined the T. gondii positivity percentage for each type of meat. Results: The study found an average of 18.8% positivity for all meat samples, pork having the highest percentage (22.5%; 14/62), followed by beef (19.3%; 12/62) and chicken (14.5%; 9/62). The best-amplified products were sequenced by macrogen and aligned with the B1 gene sequences in GenBank, thereby confirming their identity. Conclusions: This is the first study of T. gondii prevalence in meat for human consumption carried out in the city of Ibagué and the department of Tolima. All three types of meat sampled represent a risk for local human infection.
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Toxoplasma , Toxoplasmosis , Reacción en Cadena de la Polimerasa , Prevalencia , CarneRESUMEN
Resumen Introducción: la anemia es la complicación más frecuente en enfermedad inflamatoria intestinal (EII). El objetivo de este estudio fue determinar la prevalencia, asociaciones y tratamiento de la anemia en EII en nuestro medio. Materiales y métodos: se analizaron de forma retrospectiva datos de pacientes adultos con EII del Hospital Pablo Tobón Uribe en Medellín, Colombia, que consultaron desde 2001 hasta febrero de 2019. Se emplearon frecuencias absolutas y relativas. Para comparar dos proporciones se utilizó la prueba de chi cuadrado de independencia y se estimó el Odds ratio (OR). Resultados: se documentaron 759 pacientes con EII, de los cuales 544 (71,6 %) presentaron colitis ulcerativa (CU); 200 (26,3 %), enfermedad de Crohn (EC), y 15, EII no clasificable (1,9 %). En total, 185 (24,4 %) pacientes con EII presentaron anemia, que es menos frecuente en CU que en EC (22,2 % frente a 32,5 %, respectivamente; OR: 0,684; IC: 0,456-0,96; p = 0,03). Los pacientes con CU extensa (54,1 %) tenían más anemia que aquellos con CU no extensa (46,3 %) (OR: 4,4; IC: 2,6-7,4; p = 0,001); lo mismo se observó al comparar la CU grave (66,1 %) con la no grave (32,3 %) (OR: 4,95; IC: 2,87-8,51; p = 0,000). En la EC, los pacientes con comportamiento no inflamatorio (B2, B3: 73,9 %) presentaron más anemia en comparación con aquellos con comportamiento inflamatorio (B1: 26,2 %) (OR: 0,35; IC: 0,18-0,67; p = 0,000). 44,3 % de los pacientes no recibió tratamiento, 19,5 % recibió hierro oral, 20,0 % recibió hierro intravenoso y 16,2 % fue transfundido. Conclusiones: la anemia es una complicación frecuente de la EII en nuestro medio (24,4 %). A pesar de las guías internacionales, el tratamiento es subóptimo en nuestro medio.
Abstract Introduction: Anemia is the most frequent complication of inflammatory bowel disease (IBD). This study aims to determine the prevalence, connection, and treatment of anemia in IBD in a local context. Materials and Methods: This retrospective study was conducted at The Pablo Tobon Uribe Hospital, in Medellín (Colombia) with adult patients who (were admitted) came for consultation from 2001, until February 2019. Absolut and relative frequencies were calculated. The Chi square test of independence was applied for comparing two proportions and the odds ratio (OR) was estimated. Results: A total of 759 IBD patients were enrolled, 544 (71.6%) with ulcerative colitis (UC); 200 (26.3%) Crohn's disease (CD), and 15 (1.9%) with non-classifiable IBD. In total, 185 (24,4 %) IBD patients had a diagnosis of anemia, that is less frequent in UC patients that in CD patients (22,2 % versus 32,5 %, respectively; OR: 0,684; CI: 0,456-0,96; p = 0,03). Extensive UC patients (54,1 %) had a more recurrent level of anemia than non-extensive UC (46,3 %) (OR: 4,4; CI: 2,6-7,4; p = 0,001); the same result was observed when severe UC (66,1 %) was compared with UC non-severe (32,3 %) (OR: 4,95; CI: 2,87-8,51; p = 0,000). In the analysis of CD, patients with a non-inflammatory response (B2, B3: 73,9 %) had a more recurrent level of anemia than patients with an inflammatory response (B1: 26,2 %) (OR: 0,35; CI: 0,18-0,67; p = 0,000). 44,3 % of the total number of patients received treatment, 19,5 % received oral iron, 20,0 % received intravenous iron, and 16,2 % received a blood transfusion. Conclusions: In our context, Anemia is a common complication in IBD cases (24,4 %). Despite the existence of international guidelines, the treatment in our context is not optimal.
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Enfermedades Inflamatorias del Intestino , Prevalencia , Anemia , Hierro , Pacientes , Terapéutica , Transfusión Sanguínea , Enfermedad de Crohn , HospitalesRESUMEN
Enceladus is a potential target for future astrobiological missions. NASA's Cassini spacecraft demonstrated that the Saturnian moon harbors a salty ocean beneath its icy crust and the existence and analysis of the plume suggest water-rock reactions, consistent with the possible presence of hydrothermal vents. Particularly, the plume analysis revealed the presence of molecular hydrogen, which may be used as an energy source by microorganisms ( e.g., methanogens). This could support the possibility that populations of methanogens could establish in such environments if they exist on Enceladus. We took a macroscale approximation using ecological niche modeling to evaluate whether conditions suitable for methanogenic archaea on Earth are expected in Enceladus. In addition, we employed a new approach for computing the biomass using the Monod growth model. The response curves for the environmental variables performed well statistically, indicating that simple correlative models may be used to approximate large-scale distributions of these genera on Earth. We found that the potential hydrothermal conditions on Enceladus fit within the macroscale conditions identified as suitable for methanogens on Earth, and estimated a concentration of 1010-1011 cells/cm3.
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INTRODUCTION: Extraintestinal manifestations (EIMs) are frequent in patients with inflammatory bowel disease (IBD). Our objective is to characterize and determine the prevalence of MEIs in our cohort of patients with IBD. PATIENTS AND METHODS: A retrospective study was carried out in adult patients with IBD at the Pablo Tobón Uribe Hospital in Medellín. Colombia. Articular MEIs, primary sclerosing cholangitis (PSC), both ophthalmological and dermatological, were considered. Absolute and relative frequencies were used. The Chi square test of independence was used to compare 2proportions and the odds ratio (OR) was estimated. RESULTS: Our registry has 759 patients with IBD, 544 present UC (71.6%), 200 CD (26.3%) and 15 unclassifiable IBD (1.9%); 177 patients with IBD (23.3%) presented EIMs, 123 of 544 (22.6%) with UC and 53 of 200 (26.5%) with CD (OR: 0.81, 95% CI: 0.55-1.17, P=0.31). Regarding the type of EIMs, the articular ones were the most frequent (13.5%), more in CD than in UC (20.0 vs. 11.3%, OR 1.94, 95% CI: 1.25-3.00, P=0.0037). Patients with IBD and EIMs used more antibodies against tumor necrosis factor (anti-TNFs), compared to those without EIMs (43.5 vs. 18.5%, OR 3.38, 95% CI: 2.31-4.90, P=0.0001). CONCLUSIONS: The prevalence of EIMs in our cohort is high (23.3%) and the most frequent type is joint. Anti-TNFs are most used when IBD and EIMs coexist. Our study provides valuable information on the association of EIMs and IBD in Latin America.
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Enfermedades Inflamatorias del Intestino/complicaciones , Distribución de Chi-Cuadrado , Estudios de Cohortes , Colitis Ulcerosa/complicaciones , Colitis Ulcerosa/epidemiología , Colombia/epidemiología , Enfermedad de Crohn/complicaciones , Enfermedad de Crohn/epidemiología , Eritema Nudoso/epidemiología , Eritema Nudoso/etiología , Femenino , Humanos , Enfermedades Inflamatorias del Intestino/epidemiología , Artropatías/epidemiología , Artropatías/etiología , Masculino , Oportunidad Relativa , Úlceras Bucales/epidemiología , Úlceras Bucales/etiología , Prevalencia , Psoriasis/epidemiología , Psoriasis/etiología , Piodermia Gangrenosa/epidemiología , Piodermia Gangrenosa/etiología , Estudios Retrospectivos , Escleritis/epidemiología , Uveítis/epidemiología , Uveítis/etiologíaRESUMEN
Absctrat Endocarditis associated with antiPR3 ANCA and acute kidney injure generates a challenge in its diagnosis and treatment. In order to make a review about that combination, we presented a patient with necrotizing glomerulonephritis produced by a Enterococcus faecalis's subacute endocarditis and antiPR3 ANCA positive. Differential diagnosis is made between an acute kidney failure produced by ANCA's vasculitis vs necrotizing glomerulonephritis by endocarditis. Frequently it is necessary to make a biopsy to get a diagnosis. Negative immunofluorescence will guide to vasculitis associated ANCA, while positive immune complexes will guide to poststreptococcal glomerulonephritis. Other challenge that generates the association of acute kidney disease, endocarditis and antiPR3 ANCA is the treatment. ANCA positive can prompt to start immunosuppressant treatments. However, in the context of endocarditis, it could be inadvisable and even dangerous to use it. For this reason, it is controversial the use of immunosuppressant in combination with antibiotics in the acute process, in contrast with the use of only antibiotics. In the current paper we collect the 19 reports in the literature about endocarditis associated with antiPR3 ANCA, the treatment and the renal evolution of each patient. We concluded, generally, a better improvement of kidney function in patients treated with only antibiotics than those patients treated with the combination of antibiotics and corticoids. However, there are so few reports that we can't consider significant the different between both treatment groups.
Resumen La endocarditis asociada a ANCA anti-PR3 e insuficiencia renal plantea un dilema tanto en su diagnóstico como tratamiento. Para abordar una revisión de dicho tema, se presenta el caso de un paciente con glomerulonefritis rápidamente progresiva secundaria a endocarditis subaguda por Enterococcus faecalis y positividad para ANCA anti-PR3. El diagnóstico diferencial principal se establecería entre una afectación renal de una vasculitis asociada a ANCA no diagnosticada previamente vs una glomerulonefritis postinfecciosa secundaria a la endocarditis. En muchos casos es necesario disponer de una biopsia renal que esclarezca el diagnóstico, ya que una inmunofluorescencia negativa orientará hacia una vasculitis, mientras que una positividad para inmunocomplejos iría a favor de una glomerulonefritis postestreptocócica. El tratamiento a seguir es otro reto que se plantea en la coexistencia de insuficiencia renal aguda, endocarditis y ANCA anti-PR3 positivo. La positividad de ANCAs induce a valorar iniciar tratamiento con inmunosupresores, no obstante, en el lecho de una endocarditis puede resultar desaconsejado e incluso poner en riesgo la vida del paciente someterlo a un estado de inmunosupresión. Es, por tanto, controvertido el uso de inmunosupresión en combinación con antibioterapia en el proceso agudo en contraposición al uso de antibioterapia exclusivamente. En el actual artículo se recogen los 19 casos publicados en la literatura de endocarditis asociados a ANCA anti-PR3, así como el tratamiento que se realizó en cada uno de los casos y la evolución en la función renal de cada paciente, concluyendo, en general, una mejor recuperación de la función renal en los pacientes tratados con antibioterapia en exclusiva que en aquellos tratados con la combinación antibiótico-corticoides. Sin embargo, dado el pequeño tamaño muestral, no se puede considerar significativa la diferencia entre ambos tratamientos.
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Humanos , Masculino , Anticuerpos Anticitoplasma de Neutrófilos , Endocarditis , Glomerulonefritis , España , Lesión Renal AgudaRESUMEN
Las lesiones intracraneales penetrantes trans-orbitarias representan pocos casos de todos los Traumas Craneo-encefálicos, sin embargo, representan del 25 al 50 por ciento de todos los traumas penetrantes craneales. Este tipo de traumas trans-orbitarios se han reportado por diferentes tipos de objetos, incluyendo objetos de metal y de madera. Muchos de estos traumas intracraneales pueden pasar desapercibidos en casos donde el material que ingresa no queda expuesto posterior al trauma y cuando no se presenta lesión neurológica que requiera examinación exhaustiva adicional con neuro-imágenes.
Trans-orbital penetrating intracranial injuries represent few cases of all Traumatic Brain Injuries, although they represent between 25 to 50 percent of all penetrating brain injuries. Trans-orbital intracranial penetrating injuries have been reported caused by different types of objects, including metal and wooden objects. Many of these intracranial traumas can be dismissed, especially in those cases where the material is not exposed after the injury and there is no need of further examination with neuroimaging in absence of neurological deficit.
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Humanos , Lesiones Traumáticas del Encéfalo , Lesiones Traumáticas del Encéfalo/fisiopatología , Fracturas Orbitales , Órbita/anatomía & histología , Órbita/lesiones , Traumatismos Penetrantes de la Cabeza/diagnóstico , Angiografía por Resonancia Magnética/métodos , Cuerpos Extraños , Tomografía Computarizada Espiral/métodosRESUMEN
El género Salmonella comprende bacilos Gram negativos anaerobios facultativos, fermentadoresde glucosa, positivos para citrato y negativos para oxidasa, lactosa, sacarosa, urea e indol, móviles y productoras de sulfuro (excepto Salmonella enterica serotipo Typhi). La infección por Salmonella no tifoideas se produce al ingerir alimentos o agua contaminados con heces de humanos o de animales portadores como reptiles y anfibios. Objetivo: Detectar la presencia de Salmonella spp. en muestras de reptiles, anfibios y aves que conviven con niños menores de 12 años y establecer la sensibilidad antimicrobiana de los aislamientos. Materiales y métodos: Se recolectaron muestras de heces de 50 animales (reptiles, anfibios y aves) en Bogotá D.C. y seis municipios del departamento de Cundinamarca, Colombia. Los animales exóticos registrados durante el muestreo se comunicaron a la Secretaria del Medio Ambiente y a la Corporación Autónoma Regional (CAR) Cundinamarca. Las muestras se procesaron en medio Rapapport-Vassiliadis y agar MacConkey a 37 °C por 24 horas. Se realizaron pruebas bioquímicas, de aglutinación y antibiograma de 11 antibióticos utilizados para el tratamiento de las infecciones por Salmonella spp...
The genus Salmonella is comprised by facultative anaerobic Gram-negative rods, glucose fermenters, and positives to citrate; negatives to oxidase, lactose, sucrose, urea and indole, are mobile and produce sulfur (except Salmonella enterica serotype Typhi). Infection for non-typhoid Salmonella occurs by ingesting food or water contaminated with feces from humans or animals as reptiles and amphibians. Aim: To detect the presence of Salmonella spp. in samples of reptiles, amphibians and birds that live with children less than 12 years and establishing antimicrobial susceptibility of isolates. Materials and Methods: Stool samples of 50 animals (reptiles, amphibians and birds) were collecte in Bogotá D.C. and six municipalities in Cundinamarca, Colombia. The exotic animals recorded during samples collection were communicated to Secretaria del Medio Ambiente and Corporacion Autonoma Regional (CAR) Cundinamarca. The samples were processed in RappaportVassiliadis and MacConkey agar at 37 °C for 24 h, then we performed biochemical tests, agglutination and antimicrobial susceptibility for 11 antibiotics commonly used in the treatment of Salmonella spp. infection...
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Humanos , Crianza de Animales Domésticos , Pruebas de Sensibilidad Microbiana , SalmonellaRESUMEN
Reactive oxygen species and oxidative stress are involved in quinolinic acid (QUIN)-induced neurotoxicity. QUIN, a N-methyl-D-aspartate receptor (NMDAr) agonist and prooxidant molecule, produces NMDAr overactivation, excitotoxic events, and direct reactive oxygen species formation. Copper is an essential metal exhibiting both modulatory effects on neuronal excitatory activity and antioxidant properties. To investigate whether this metal is able to counteract the neurotoxic and oxidative actions of QUIN, we administered copper (as CuSO(4)) intraperitoneally to rats (2.5, 5.0, 7.5, and 10.0 mg/kg) 30 min before the striatal infusion of 1 microliter of QUIN (240 nmol). A 5.0 mg/kg CuSO(4) dose significantly increased the copper content in the striatum, reduced the neurotoxicity measured both as circling behavior and striatal gamma-aminobutyric acid (GABA) depletion, and blocked the oxidative injury evaluated as striatal lipid peroxidation (LP). In addition, copper reduced the QUIN-induced decreased striatal activity of Cu,Zn-dependent superoxide dismutase, and increased the ferroxidase activity of ceruloplasmin in cerebrospinal fluid from QUIN-treated rats. However, copper also produced significant increases of plasma lactate dehydrogenase activity and mortality at the highest doses employed (7.5 and 10.0 mg/kg). These results show that at low doses, copper exerts a protective effect on in vivo QUIN neurotoxicity.