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1.
Indian J Lepr ; 1991 Apr-Jun; 63(2): 203-8
Article in English | IMSEAR | ID: sea-54807

ABSTRACT

In the present study we have evaluated the Fluorescein Diacetate/Ethidium Bromide (FDA/EB) staining technique to assess the viability of Mycobacterium leprae obtained from biopsies of leprosy patients under different periods of treatment. Bacillary suspensions were obtained from skin punch biopsies and stained with the FDA/EB solution. The average percentage of green cells seen which were deemed to be viable were: 67.2% of green cells in patients without previous treatment; 45.6% in patients with 1 to 6 months of treatment; 25.9% for patients with 7 to 12 months of treatment and 10.5% in patients with 13 to 24 months of treatment. All the patients studied were on multidrug therapy. The differences obtained in the percentages of green cells in the different groups of patients were statistically significant as determined by the Wilcoxon's test. The decrease in the percentage of green cells observed with increasing periods of treatment suggests that the FDA/EB technique correlates with the actual viability of M. leprae. The application of this technique in the routine procedures performed with Hansen's disease patients could be very useful for monitoring the effectiveness of treatment in leprosy patients.


Subject(s)
Ethidium , Fluoresceins , Humans , Leprosy/drug therapy , Mycobacterium leprae/growth & development , Staining and Labeling
2.
Rev. Inst. Invest. Cienc. Salud ; 3(1): 107-28, dic. 1988. tab
Article in Spanish | LILACS | ID: lil-75586

ABSTRACT

La protoporfirna es metabolismo indispensable en al síntesis del HEM, pues su presencia hace posible que el hierro en estado ferroso se incorpore en su interior mediante la acción catalítica de una enzima mitrocondrial denominada ferroquetalasa o hem sintetasa y finalmente formarse el Hem. Este hecho puede alterarse ya sea, por un estado deficitário en hierro en forma crónica o por acumulación anormal de plomo. El estudio se realiza en 199 personas de la zona rural de Sto. Domingo de los Colorados, integrado por 87 hombres (43.72%) y 112 mujeres (56.28%). Los resultados nos permiten inferir la existencia de un estado deficitario de este mineral son: niños en crecimiento rápido (lactantes, preescolares y escolares), mujeres en edad fértil y mujeres embarazadas (no consideradas en este trabajo). En este presente estudio aproximadamente el 90% de las personas pertencientes a estos grupos señalados presentan algún trastorno relacionado con el metabolismo del hierro, definido por una disminución en la concentración sanguínea de hemoglobina y un aumento en la concentración de protoporfirina eritrocitaria. Con el presente estudio pretendemos insistir en el uso de indicadores adecuados y técnicas de laboratório fáciles y fiables para determinar el estado de hierro en el organismo


Subject(s)
Infant , Child, Preschool , Child , Adolescent , Adult , Middle Aged , Humans , Male , Female , Hemoglobins/analysis , /diagnosis , Protoporphyrins/analysis , Erythrocyte Indices
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