A Comparative Study of the Ileum in Rat (Rattus norvegicus), Bat (Eidolon helvum) and Pangolin (Manis tricuspis) as Investigated Using Histological Method

Abstract

A Comparative Study of the Ileum in Rat (Rattus norvegicus), Bat (Eidolon helvum) and Pangolin (Manis tricuspis) as Investigated Using Histological Method Estudio Comparativo del Íleon en Rata (Rattus norvegicus), Murciélago (Eidolon helvum) y Pangolín (Manis tricuspis) Utilizando como Investigación el Método Histológico A.; ADEEYO, O. A.; AJAYI, S. A.; OLUWAYINKA, P. O.; ADELAKUN, E. A.; KEJI, S. T. & ADESANYA, O. A. A comparative study of the ileum in rat (Rattus norvegicus), bat (Eidolon helvum) and pangolin (Manis tricuspis) as investigated using histological method. Int. J. Morphol., 26(1):137-141, 2008. SUMMARY:The histological and morphometric differences in some parts of the gastrointestinal tracts of rat, bat and pangolin have been well established. This investigation aims at comparatively elucidating any adaptational changes the ileum of the three mammals must have adopted to meet its dietary requirements and also cope with their morphological differences. The investigation was carried out using ten rats, ten bats and ten pangolins of both sexes. The animals were slightly anaesthetized under chloroform inhalation. The intestines were harvested and the ileum excised and fixed in 10% formol saline. The tissues were processed for light microscopic study. The following stains were employed: Haematoxylin and eosin (H & E), Van Gieson and Verhoeff's haematoxylin elastic tissue stain. Stained slides were also analysed morphometrically. The results revealed microstructural modifications which characterized the mucosa as well as the pattern of distribution of the conjuntive tissue fibers in the ileum of the three mammals. These modifications are means of successfully coping with their respective diets and morphological differences. A.; ADEEYO, O. A.; AJAYI, S. A.; OLUWAYINKA, P. O.; ADELAKUN, E. A.; KEJI, S. T. & ADESANYA, O. A. A comparative study of the ileum in rat (Rattus norvegicus), bat (Eidolon helvum) and pangolin (Manis tricuspis) as investigated using histological method. Int. J. Morphol., 26(1):137-141, 2008. PALABRAS CLAVE: Pangolin; Murciélago; Rata; Íleon; Microanatomía, Tejido Conjuntivo. OFUSORI, D. A; CAXTON-MARTINS, E. A.; KOMOLAFE, O. O.; OLUYEMI, K. A.; ADEEYO, O. A.; AJAYI, S. A.; OLUWAYINKA, P. O.; ADELAKUN, E. A.; KEJI, S. T. & ADESANYA, O. A. A comparative study of the ileum in rat (Rattus norvegicus), bat (Eidolon helvum) and pangolin (Manis tricuspis) as investigated using histological method. OFUSORI, D. A; CAXTON-MARTINS, E. A.; KOMOLAFE, O. O.; OLUYEMI, K. A.; ADEEYO, O. A.; AJAYI, S. A.; OLUWAYINKA, P. O.; ADELAKUN, E. A.; KEJI, S. T. & ADESANYA, O. A. A comparative study of the ileum in rat (Rattus norvegicus), bat (Eidolon helvum) and pangolin (Manis tricuspis) as investigated using histological method.

Comparative Collagen Distribution in the Small Intestine of Eidolon Helvum and Manis Tricuspis

“…The morphological organisation of the small intestine in both animals conforms to that of a typical tubular organ as described previously (Coico et al, 2003;Hildebrand and Goslow, 2001;Young et al, 2006). The findings of this study disagree with the observations of Ofusori et al (2008) regarding the absence of collagen fibres in the submucosa of bat ileum. The reason for this might be that this study utilised a more appropriate Masson's trichrome stain for the demonstration of collagen.…”

Arsenic abrogates the estrogen-signaling pathway in the rat uterus

“…The number of the eye piece divisions and its corresponding stage measurements was noted. The occulometer fixed into the microscope was then focused through stained sections of the tissue to allow for measurement of the luminal diameter, height of luminal epithelial cells, size of endometrial glands and longitudinal muscle layer [ 40 ].…”

Bio-Inspired Functional Surfaces Based on Laser-Induced Periodic Surface Structures

“…[ 127 ]; ( d ) Adapted from Ofusori et al . [ 128 ]; ( e ) Adapted from Tong et al . [ 129 ] with permission from Springer; ( h ) Reproduced with permission from Abdel-Aal and El Mansori [ 130 ] Copyright IOP Publishing.…”