LIGHT MICROSCOPIC CHANGES IN THE VILLI HEIGHT OF THE SMALL INTESTINES OF LABORATORY RAT (RATTUS NORVEGICUS) FOLLOWING MEBENDAZOLE ADMINISTRATION; Pequeños cambios microscópicos observados en la altura del vello en el intestino delgado de la ratas de laboratorio (rattus norvegicus) después de la administración de mebendazole.

Autores/as

  • Thomas M. Amuti University of Nairobi, College of Health Sciences http://orcid.org/0000-0003-0532-3653
  • Anne Pulei University of Nairobi, College of Health Sciences
  • Paul Odula University of Nairobi, College of Health Sciences
  • Hassan Saidi University of Nairobi, College of Health Sciences

DOI:

https://doi.org/10.31051/1852.8023.v10.n1.19258

Palabras clave:

Villi height, Intestinal light microscopy, Altura del vello, microscopía de luz intestinal

Resumen

 

Through tubulin degradation, mebendazole interferes with glucose uptake into intestinal cells and exhaustion of glycogen reserves leads to parasite death. When used in humans, the drug may mediate mucosal changes responsible for reported side effects including diarrhea. Earlier studies have shown changes to the goblet and crypt cells in mammalian intestines. Its effects on the intestinal villi height has not been determined. Forty laboratory rats were used; ten rats, for determination of baseline features whereas three experimental groups of five rats received 1.6ml of MBZ for three, eight, and thirty days respectively. Once sacrificed, the rats from the interventional and control groups were dissected to harvest 5mm sections from duodenum, jejunum and ileum. These were processed, sectioned and stained for light microscopy to demonstrate cryoarchitecture. The villi were measured and data represented in medians. Mann Whitney U test was done to check for differences between controls versus experimental groups at specific time points, Krus Kall Wallis test, for differences among experimental groups or control groups alone. Mebendazole administration was associated with initial reduction in the villi height. The lowest value recorded was after 3 days in the duodenum and 8 days in the jejunum/iluem, beyond which continued MBZ administration was associated with increase in villous height until day thirty. Findings of this study suggest that MBZ does not have effects on the villous height when used for prolonged periods. This explains why patients who use the drug for long-term periods tolerate it.

 

Mediante la degradación de la tubulina, el mebendazole (MBZ) interfiere con la entrada de glucosa a las células intestinales, y el agotamiento de las reservas de glucógeno causa la muerte de parásitos. Al ser utilizada en seres humanos, el medicamento puede fungir como intermediario de cambios en las mucosas que pueden causar efectos secundarios reportados, incluida la diarrea. Los estudios anteriores han demostrado cambios en los intestinos de mamíferos, los cuales afectan las células caliciformes y células en las criptas de Lieberkuhn. No se han determinado aún sus efectos en la altura del vello intestinal. Se utilizaron cuarenta ratas de laboratorio; diez ratas para determinar características básicas, mientras que tres grupos experimentales de cinco ratas recibieron 1.6 mL de MBZ por tres, ocho y treinta días, respectivamente. Una vez que fueron sacrificadas, las ratas de los grupos de intervención y de control fueron disecadas para obtener secciones de 5 mm de su duodeno, yeyuno e íleon. Estos segmentos fueron procesados, seccionados y entintados para microscopía de la luz, para determinar su arquitectura celular bajo congelación. Se midieron los vellos y se utilizaron las medias como datos. Se realizó la prueba de Mann-Whitney para determinar si existían diferencias entre los grupos de control y experimentales tratados por plazos específicos de tiempo, y se realizó la prueba de Kruskal-Wallis para identificar sólo las diferencias entre grupos experimentales y grupos de control. La administración de mebendazole estuvo asociada con la reducción inicial en la altura del vello. El valor registrado más bajo ocurrió después de 3 días en el duodeno, y 8 días en el yeyuno y el íleon. Después de este tiempo, la continuación de la administración de MBZ fue asociada con un aumento en la altura del vello hasta el día treinta. Los hallazgos de este estudio sugieren que el MBZ no surte efecto alguno en la altura del vello intestinal si se utiliza por plazos largos de tiempo. Esto explica por qué los pacientes que utilizan el medicamento a largo plazo llegan a tolerarlo.

Biografía del autor/a

  • Thomas M. Amuti, University of Nairobi, College of Health Sciences
    I am a Bachelor of Science in Human Anatomy graduate and a junior editor in the Journal of Obstetrics and Gynacology in East and Central Africa. I also possess skills in research.

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2018-04-08

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LIGHT MICROSCOPIC CHANGES IN THE VILLI HEIGHT OF THE SMALL INTESTINES OF LABORATORY RAT (RATTUS NORVEGICUS) FOLLOWING MEBENDAZOLE ADMINISTRATION; Pequeños cambios microscópicos observados en la altura del vello en el intestino delgado de la ratas de laboratorio (rattus norvegicus) después de la administración de mebendazole. (2018). Revista Argentina De Anatomía Clínica, 10(1), 18-24. https://doi.org/10.31051/1852.8023.v10.n1.19258