Uso del análisis de restricción en el control de calidad de cepa del biolarvicida cubano BACTIVEC / Use of the restriction analysis in the quality control of the strain of Cuban biolarvicide BACTIVEC

Se mostró la caracterización genómica de la cepa utilizada en la producción del biolarvicida Bactivec. Se compararon los patrones de digestión de la cepa de referencia 266 de Bacillus thuringiensis de la colección del Instituto Pushkin del antiguo Leningrado y 2 cepas aisladas de 2 lotes del biolarvicida. Las digestiones del ADN cromosomal se realizaron con las enzimas HindIII y EcoRI. En todos los casos se observó el mismo patrón de restricción, lo que muestra la estabilidad genética del ingrediente activo del biolarvicida Bactivec

Polimorfismos del gen de lipoproteína lipasa en diabéticos no insulino-dependientes: estudio preliminar / Lipoprotein gene polymorphism in non dependent diabetics: preliminary study

Background: Lipoprotein lipase plays a crucial role in plasma lipoprotein metabolism. Several lipoprotein lipase gene polymorphisms have been found associated with lipid levels, premature atherosclerosis and cardiovascular disease. Aim: To investigate, in the Chilean population, the genotype distribution of lipoprotein lipase polymorphism and its possible association with lipid levels and obesity. Patients and methods: Hind III and Pvu II polymorphism was determined in 45 non-insulin-dependent diabetic patients and in 52 non diabetic controls from Santiago, Chile. Results: Hind III (+/+) polymorphism had a higher frequency in diabetics as compared to controls (0.6 and 0.29 respectively, p= 0.009). The frequency of heterozygous distribution was higher in non diabetic subjects. Controls and diabetics had comparable gene frequencies for the Pvu II genotype distribution. Analyzing the impact of these polymorphisms on plasma lipid levels, Hind III (+/+) genotype was associated with high Levels of total cholesterol and triglycerides in both groups. The hterozygote (+/-) or homozygote (-/-) state for Hind III was effectively associated with high levels of HDL cholesterol levels, as compared to the (+/+) genotype. There was no relationship between these genotypes and body mass index and waist to hip ratio. Conclusions: An association between genetic variation at the lipoprotein lipase locus with high levels of triglycerides and total cholesterol was confirmed. However, no association of these genetic markers with anthropometric measurements was found

Detecçäo de portadoras de gene da hemofilia A em uma populaçäo brasileira / Carriers detection of hemophilia A gene in a Brazilian population

A identificaçäo de portadores do gene para a hemofilia A foi levada a efeito em 20 famílias de pacientes que apresentavam essa condiçäo. A detecçäo foi realizada com base no estudo dos polimorfismos de restriçäo (RLFP) do gene do fator VIII para as enzimas BcII e HindIII. Os métodos utilizados incluíram a amplificaçäo de fragmentos do gene em análise pela reaçäo em cadeia de polimerase e posterior digestäo com as enzimas específicas. Foram estudados 84 indivíduos pertencentes a 20 famílias de pacientes. Foi possível identificar ou excluir portadoras do gene anormal em 76// das famílias estudadas. Esse traballho evidencia a possibilidade de detecçäo de portadoras na maioria das famílias de pacientes com hemofilia A na populaçäo brasileira com o emprego de um número restrito de polimorfismo de restriçäo