ABSTRACT
Introducción: En las dos últimas décadas, se ha explorado el rol de la infección por Helicobacter pylori en la génesis de las enfermedades alérgicas, obteniéndose datos que apoyan la idea de que podría jugar un papel importante en el desarrollo de la alergia. Objetivo: Identificar la asociación entre Helicobacter pylori y enfermedades alérgicas. Materiales y métodos: Estudio de casos y controles prospectivo realizado en la Clínica "Santa Cruz" (Barquisimeto, Estado Lara, Venezuela), entre junio 2022 y junio 2023, donde se compararon 65 niños con enfermedades alérgicas con 130 controles sanos, con edades entre 2 y 15 años, que acudieron a consulta ambulatoria de rutina. Fueron comparadas variables demográficas, parto por cesárea, antecedentes familiares de alergias, tiempo de lactancia materna, exposición al humo de tabaco, mascotas, obesidad, porcentaje de eosinófilos y test de Helicobacter pylori positivo en heces con la presencia de enfermedades alérgicas como variable dependiente. Se utilizó: análisis bivariable y regresión logística binaria. Resultados: Los factores asociados significativamente a enfermedades alérgicas fueron: antecedentes familiares de alergia, tiempo de lactancia materna menor a 12 meses, y test de Helicobacter pylori positivo en heces. Fueron identificados como predictores independientes asociados a enfermedades alérgicas: antecedentes familiares de alergia (RO=2,345; IC95%: 1,245 - 4,416; p = 0,008) y test de Helicobacter pylori positivo en heces (RO=2,072; IC95%: 1,090 - 3,939; p = 0,026). Conclusión: La presencia de antecedentes familiares de alergia y test de Helicobacter pylori positivo en heces fueron identificados como variables independientes asociadas a enfermedades alérgicas.
Introduction: In the last two decades, the role of Helicobacter pylori infection in the genesis of allergic diseases has been explored, showing data supporting the idea that it could play an important role in the development of allergy. Objective: To identify the association between Helicobacter pylori and allergic diseases. Materials and methods: This was a prospective case-control study carried out at the "Santa Cruz" Clinic (Barquisimeto, Lara State, Venezuela), between June 2022 and June 2023, where 65 children with allergic diseases were compared with 130 healthy controls, aged between 2 and 15 years old, who presented for routine outpatient consultation. Demographic variables, cesarean delivery, family history of allergies, breastfeeding time, exposure to tobacco smoke, pets, obesity, percentage of eosinophils and a positive Helicobacter pylori test in feces were compared with the presence of allergic diseases as a dependent variable. Bivariate analysis and binary logistic regression were used. Results: Factors significantly associated with allergic diseases were: family history of allergy, breastfeeding time of less than 12 months, and positive Helicobacter pylori test in feces. The following were identified as independent predictors associated with allergic diseases: family history of allergy (OR=2.345; 95%CI: 1.245 - 4.416; p = 0.008) and positive Helicobacter pylori test in stool (OR=2.072; 95%CI: 1.090 - 3.939; p = 0.026). Conclusions: The presence of a family history of allergy and a positive Helicobacter pylori test in stool were identified as independent variables associated with allergic diseases.
ABSTRACT
OBJETIVOS: Investigar en humanos la presencia de anticuerpos IgG anti-Trypanosoma cruzi y los hábitos alimenticios de triatominos de las viviendas de 3 localidades de la provincia de Nasca, Perú. MATERIAL Y MÉTODOS: Estudio de anticuerpos IgG anti-T. cruzi por medio de los métodos RIFI y ELISA en muestras de sangre de 867 habitantes (excluidos los menores de un año), en las localidades de Tulín, Vista Alegre y Changuillo, para evaluar el problema de la enfermedad de Chagas. Además se investigó las condiciones de 494 casas, se capturó 581 ejemplares de Triatoma infestans (411 ninfas y 170 adultos) y se examinó su contenido intestinal, para la identificación de sus hábitos alimenticios y búsqueda de T. cruzi. RESULTADOS: Se identificó anticuerpos IgG anti-T. cruzi en muestras de 128 personas (14,8 por ciento ), 89 (15,9 por ciento ) de sexo femenino y 39 (12,6 por ciento ) de sexo masculino. La reacción de precipitina en tubo capilar (8 antígenos) identificó en 401 insectos (69,0 por ciento ) sus fuentes de alimento, siendo las principales: aves 252 ( 43,4 por ciento ), roedores 36 (6,2 por ciento ), humano 23 (3,9 por ciento ) y perro (1,6 por ciento ). Una hembra de T. infestans se encontró infectada por T. cruzi. CONCLUSIONES: La prevalencia en humanos fue de 14,8 por ciento . En relación a los hábitos alimenticios, la ingesta de sangre humana se encontró en 3,9 por ciento de los triatominos, lo cual indica factor de riesgo para contraer la enfermedad de Chagas.
Subject(s)
Humans , Triatoma , Trypanosoma cruzi , Triatominae , Chagas DiseaseABSTRACT
Background. Thyrotoxic periodic paralysis (TPP) is characterized by episodes of neuromuscular weakness occurring in the context of hypokalemia and hyperthyroidism and has been predominantly described in Oriental populations. Whereas it is uncommon in Caucasians and Blacks, TPP does occur in individuals of Native American descent. The objective was to analyze the clinical, biochemical, and HLA characteristics of group of Mexican mestizo patients with TPP. Methods. The sample was comprised of 14 men with TPP diagnosed since january 1990, based on one or more episodes of flaccid paralysis, accompanied by hypokalemia and occurring in the context of clinical and biochemical hyperthyroidism. Eight were available HLA testing. Results. Hyperthyroidsm was diagnosed before the development of periodic paralysis in five of the patients, whereas in six it occurred afterward. The severity of paralysis did not correlate with the degree of either hypokalemia or hyperthyroidism. An increased frequency of HLA-DR3 was found in Graves' patients without paralysis but not in those with paralysis, as compared to the general population. Conclusions. TPP is more common than previously thoought in Mexicans, in whom it behaves as in other Native American groups. The lack of HLA-DR3 association in Graves' patients with TPP is interesting, but at the moment has no pathophysiological implications
Subject(s)
Humans , Male , Adult , Middle Aged , HLA Antigens/analysis , Ethnicity , Gene Frequency , Graves Disease/complications , White People/genetics , Hypokalemia/ethnology , Paralysis/ethnology , Thyrotoxicosis/ethnology , /analysis , HLA Antigens/genetics , Gene Frequency , Graves Disease/immunology , Hypokalemia/blood , Indians, North American/genetics , Paralysis/blood , Potassium/blood , Thyroid Hormones/blood , Thyrotoxicosis/etiologyABSTRACT
Most cases of primary hyperparathyroidism are due to either a parathyroid adenoma or to parathyroid hyperplasia. Parathyroid carcinoma is a very rare cause of hyperparathyroidism. Although the diagnosis of parathyroid carcinoma is usually established based on pathological criteria of vascular and capsular invasion, some clinical and biochemical features differentiate it from benign forms of hyperparathyroidism. We report the case of a middle-aged woman with a long standing history of nephrolithiasis, who presented with a palpable neck mass, wigh loss, severe hypercalcemia and hypophosphatemia, as well as very high serum levels of intact parathyroid hormone. Surgical neck exploration revealed a large tumor that invaded trache, esophagus, recurrent laryngeal nerve, right apical pleura and right carotid artery. Pathological examination confirmed the invasive nature of the tumor. Along with the case report, we review the literature and discuss the diagnostic and therapeutic options of this rare condition