An Animal Model Using Metallic Ions to Produce Autoimmune Nephritis.

Autoimmune nephritis triggered by metallic ions was assessed in a Long-Evans rat model. The parameters evaluated included antinuclear autoantibody production, kidney damage mediated by immune complexes detected by immunofluorescence, and renal function tested by retention of nitrogen waste products and proteinuria. To accomplish our goal, the animals were treated with the following ionic metals: HgCl2, CuSO4, AgNO3, and Pb(NO3)2. A group without ionic metals was used as the control. The results of the present investigation demonstrated that metallic ions triggered antinuclear antibody production in 60% of animals, some of them with anti-DNA specificity. Furthermore, all animals treated with heavy metals developed toxic glomerulonephritis with immune complex deposition along the mesangium and membranes. These phenomena were accompanied by proteinuria and increased concentrations of urea. Based on these results, we conclude that metallic ions may induce experimental autoimmune nephritis.

Evaluación de la infección de Trichinella spiralis en cerdos gonadectomizados, Zacatecas, México / An assessment of Trichinella spiralis infection in gonadectomized pigs in Zacatecas, Mexico

Objetivo: Evaluar la infección de Trichinella spiralis en cerdos gonadectomizados. Material y método: El presente trabajo se realizó utilizando 9 cerdos de la raza York de 4 meses de edad divididos en tres grupos: 3 cerdos control sanos, 3 cerdos infectados con Trichinella spiralis y 3 cerdos gonadectomizados y posteriormente infectados con Trichinella spiralis, todos los animales fueron sangrados pretratamiento y postratamiento para detección de anticuepos anti T. spiralis por las técnicas inmunologicas, Wester Blot y Inmunofluorescencia indirecta. Los animales fueron sacrificados a las 6 semanas de infección por Trichinella spiralis, se obtuvo tejido para las técnicas directas de compresión en placa y digestión artificial para evaluación de carga parasitaria. Resultados: en los cerdos gonadectomizados e infectados se presentó un ataque agudo de Trichinellosis, la carga parasitaria fue mayor estadísticamente significativa en relación a los cerdos infectados con P < 0.01), por el método de ANOVA y sin gonadectomizar, las técnicas inmunológicas fueron positivas en ambos grupos infectados y gonadectomizados. Conclusión: El diagnóstico oportuno de Trichinella spiralis mediante la evaluación directa y aletoria en camadas de cerdos a través de la observación de larva infectante en tejido cerebral, detección de anticuerpos anti - T. spiralis. por inmunofluorecescia indirecta e inmunoelectrotransferencia resultan eficaces y eficientes para hacer un diagnóstico oportuno en el animal para consumo humano.

Objective: To assess the prevalence of Trichinella spiralis in gonadectomized pigs. Material and methods: The study was performed using 9 four-month old pigs, York race, which were divided in three groups: 3 healthy control animals, 3 pigs infected with Trichinella spiralis, and 3 gonadectomized animals that later were infected with T. spiralis. Blood samples were taken from every animal before and after therapy for the detection of anti-T. spiralis antibodies using Western Blot and indirect immunofluorescence techniques. All animals were killed after 6 weeks of being infected with T. spiralis, and tissue samples were obtained for performing assessments using direct methods, such as plate compression and artificial digestion in order to look for the parasite load. Results: Gonadectomized and infected pigs developed an acute presentation of trichinellosis, their parasite load was statistically higher compared to infected non-gonadectomized pigs using ANOVA (P<0.01), and immune methods yielded positive results in both infected groups of animals. Conclusion: The timely diagnosis of Trichinella spiralis in pigs using direct and random assessments by observing the presence of infective worms in brain tissue, together with the detection of anti-T. spiralis antibodies using indirect immunofluorescence and immunoelectrotransference are both efficacious and efficient for the early diagnosis of this infection in animals whose meat is about to be consumed.

Efecto del albendazol en ratas long evans gestantes e infectadas con T. spiralis / Albendazol effect in Long Evans Rats pregnant and infected with T. spiralis

El Albendazol es el antihelmíntico de primera elección para varias parasitosis, entre ellas la Trichinellosis, sin embargo, el tiempo de tratamiento debe ser por periodos prolongados. El objetivo del trabajo fue determinar el efecto de este medicamento sobre ratas Long Evans gestantes e infectadas con T. spiralis. Se sincronizaron las ratas para gestarlas e infectarlas, el tratamiento fue de uno a catorce días, se utilizó la técnica de Hematoxilina-Eosina para evaluar el efecto sobre el hígado y el aparato reproductor, se determino el número de crías por tratamiento y las características de las crías obtenidas, los resultados indican una degeneración de los tejidos conforme aumenta el tiempo de tratamiento además se observa que el numero de crías es afectado directamente al aumentar el tiempo de tratamiento

The Albendazol is the antihelmintic of first election for several parasitism, among them trichinellosis, nevertheless, the time of treatment must be per prolonged periods. The aim of this work was to determine the effect of this medicine on Long rats Evans pregnant and infected with T. spiralis. We synchronize the rats to develop them and to infect them, the treatment went of one to fourteen days, used the Hematoxilina-Eosin technique to verify the effect on the liver and the reproductive apparatus and verified the number of young for each treatment and if correspondence between the obtained characteristics of the reproductive apparatus and young existed, the results indicate a degeneration of weaves as increases the time of treatment in addition is observed that I number of young is directly affected when increasing the treatment

Detección de los cambios fenotípicos en productos de ratas long evans infectadas con trichinella spiralis y tratadas con albendazol / Phenotypic changes detection in new born Long Evans Rat infected with T. spiralis and Albendazol treated

Trichinella spiralis es uno de los agentes causantes de la Trichinellosis, es una zoonosis de distribución mundial, afecta a gran número de mamíferos así como al humano. En México la causa principal de infección se asocia con el consumo de carne de cerdo infectada con T. spiralis. En este trabajo se detectaron los cambios fenotípicos en productos de ratas Long Evans infectas con T. spiralis y tratadas con Albendazol. Utilizamos ratas cepa Long Evans en edad reproductiva. Divididas en grupos, incluidos controles y con tratamiento de uno a catorce días de tratamiento, para sincronizar la gestación en las ratas se realizaron frotis vaginales. Para la detección del parásito se utilizaron técnicas directas de compresión en placa y digestión artificial y la técnica indirecta de MIDD, para los cambios fenotípicos de crías obtenidas se realizo análisis detallado con microscopio estereoscópico

Trichinella spiralis is one of the causative agents of the Trichinellosis, is a zoonosis of world-wide distribution, affects to big number of mammals like this as to the human. In Mexico the main cause of infection associate with the consumption of pig infected meat with T. spiralis. In this work detected the phenotypical changes in long Evans rats products infected with Trichinells spiralis and threated with albendazol medication. Use rats cepa long evans ina reproductive age. Divided in groups, included controls and with treatment varying of one to fourteen days of treatment, to synchronize the management in the rats realized vaginal.smears For the detection of the parasites used direct techniques of understanding in plate and artificial digestion and the indirect technician of MIID, for the phenotypical changes of baby rats obtained realized a detailed analysis with stereoscopic microscope