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1.
Rev. habanera cienc. méd ; 19(4): e3048, ilus
Article in Spanish | LILACS, CUMED | ID: biblio-1139171

ABSTRACT

Introducción: la Insuficiencia renal crónica es un problema de salud pública, por lo que surge la necesidad de incrementar las acciones dirigidas a su prevención, diagnóstico e intervenciones terapéuticas eficaces; estudios recientes emplean el Factor de crecimiento epidérmico para evaluar su efecto reno-protector en variables funcionales; sin embargo se carece de estudios relacionados con los efectos de este producto sobre las características histológicas de riñones insuficientes. Objetivo: determinar los posibles efectos protectores y/o reparadores del Factor de crecimiento epidérmico humano recombinante sobre las características histológicas de riñones con insuficiencia renal crónica. Material y métodos: se trabajó con tres series, formadas por un grupo control y uno experimental cada una, de cinco animales, a los grupos experimentales se les realizó ablación quirúrgica de 5/6 de la masa renal. La serie A se conformó por animales controles, la B por los tratados con Factor de crecimiento epidérmico 24 horas antes del procedimiento y la C por los tratados con el bioproducto 24 horas después. Pasados 56 días del acto operatorio a los animales se les practicó la eutanasia y se procedió al estudio histológico del riñón. Resultados: en los animales de la serie A se observaron alteraciones histológicas en los corpúsculos y túbulos renales, en la serie B se observó que la mayor parte del parénquima renal presentó características normales y los de la serie C mostraron un daño renal incrementado. Conclusiones: El Factor de crecimiento epidérmico humano recombinante posee efecto reno-protector, sin embargo, no ofrece efecto reno-reparador(AU)


Introduction: Chronic Kidney Failure is a public health problem; therefore, the need for actions aimed at its prevention, diagnosis and effective therapeutic interventions is a most. Recent studies use the Epidermal Growth Factor to evaluate its reno-protective effect on functional variables; however, there are no studies related to the effects of this product on histological features of kidney in chronic failure. Objective: To determine the possible protective and / or repair effects of recombinant human epidermal growth factor on the histological features of kidneys in chronic renal failure. Material and methods: We worked with three series, each consisting of a control group and an experimental group of five animals. The experimental groups underwent 5/6 surgical ablation of the renal mass. Series A consisted of control animals, series B included those animals treated with Epidermal Growth Factor 24 hours before the procedure and series C was made up of those animals treated with the bioproduct 24 hours after the procedure. Fifty-six days after surgical act, euthanasia was practiced on the animals and the kidneys were histologically studied. Results: Histological alterations were observed in the renal corpuscles and tubules in the animals included in series A; in series B it was observed that most of the renal parenchyma presented normal characteristics and those in series C showed increased kidney damage. Conclusions: Recombinant human epidermal growth factor has a reno-protective effect; however, it does not offer a repair effect of acute kidney(AU)


Subject(s)
Animals , Rats , Epidermal Growth Factor/pharmacology , Renal Insufficiency, Chronic/drug therapy , Kidney/drug effects
2.
Rev. cuba. invest. bioméd ; 31(1): 63-72, ene.-mar. 2012.
Article in Spanish | LILACS | ID: lil-644735

ABSTRACT

Se pretende determinar los efectos protectores sobre el timo de ratas adolescente con síndrome fetal alcohólico experimental, para lo cual se utilizaron 24 ratas Wistar adolescentes y gestantes divididas en 4 grupos: A) tratadas con etanol, B) tratadas con etanol y ácido fólico, C) tratadas solo con ácido fólico y D) grupo no tratado. El tratamiento se extendió durante toda la gestación hasta el parto. Se tomaron 2 crías por cada madre. A las crías se les practicó la eutanasia a los 35 días de vida posnatal. Se extrajo el timo y se obtuvieron cortes de 4 micrómetros y se colorearon con H/E. Se utilizó el programa digital para morfometría Image Tool. Se midieron las áreas de la corteza y médula del timo, así como la relación entre ambas variables. Se realizó ANOVA de 2 vías. El área de la corteza del timo fue significativamente menor en el grupo tratado con etanol en relación con el resto de los grupos. Los hijos de las madres tratadas con ácido fólico mostraron los valores mayores en el área de la corteza, y el grupo tratado con etanol y ácido fólico mostró un patrón muy similar al control. Se concluyó que el etanol provoca cambios histopatológicos evaluados como atrofia de la corteza del timo y que el ácido fólico suministrado a la madre durante la gestación tiene efecto protector sobre esta anomalía


The study is intended to determine the protective effects of folic acid on the thymus of adolescent rats with experimental fetal alcohol syndrome. To this end, 24 adolescent and pregnant Wistar rats were used, which were divided in 4 groups: A) treated with ethanol, B) treated with ethanol and folic acid, C) treated only with folic acid, and D) not treated. Treatment extended throughout the entire gestation period until delivery. Two offspring were chosen from each mother. The offspring were euthanized at 35 days of postnatal life. The thymus was extracted and 4-micrometer cutouts were obtained, which were colored with H/E. The digital program Image Tool was used for morphometry. Measurements were taken of areas of the thymic cortex and medulla, and the relationship between the two variables was determined. A two-way ANOVA was performed. The thymic cortex area was significantly smaller in the group treated with ethanol than in the other groups. Offspring of mothers treated with folic acid showed the highest cortex area values, and the group treated with ethanol and folic acid exhibited a pattern very similar to the control group. It was concluded that ethanol brings about histopathological changes evaluated as thymic cortex atrophy, and that the folic acid administered to mothers during gestation has a protective effect over this abnormality


Subject(s)
Rats , Folic Acid/therapeutic use , Fetal Alcohol Spectrum Disorders/prevention & control , Thymus Gland/anatomy & histology , Epidemiology, Descriptive , Prospective Studies
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