Histological study of liver in Dhub lizard Uromastyx aegyptius microlepis (Blanford, 1874) during the period of hibernation
The Iraqi dhub-lizard enters the hibernation when the temperature decreases in the winter. During this period, light microscopic analysis showed that the hepatic tissue is surrounded by a thin capsule composed mainly of collagen fibres. Trabeculae extended from this capsule towards the parenchyma we...
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University of Guilan
2022-12-01
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| Series: | Caspian Journal of Environmental Sciences |
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| Online Access: | https://cjes.guilan.ac.ir/article_6083_1c39d3ed73a3215baa15b86ebd61b6a0.pdf |
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| author | Jasim Mohammed Jawad Saddama Saed Faraj |
| author_facet | Jasim Mohammed Jawad Saddama Saed Faraj |
| author_sort | Jasim Mohammed Jawad |
| collection | DOAJ |
| description | The Iraqi dhub-lizard enters the hibernation when the temperature decreases in the winter. During this period, light microscopic analysis showed that the hepatic tissue is surrounded by a thin capsule composed mainly of collagen fibres. Trabeculae extended from this capsule towards the parenchyma were restricted to the subcapsular region and the liver tissue had no clear lobulation. Hepatocytes were arranged into one or two cell thick cords or acini contained three to five cells. Hepatocytes were polyhedral, oval and pyramidal in shape, and some of these cells demonstrated degenerative changes. Sinusoids appeared either as narrow irregular shape channels separating the hepatic cords with two layers of cells or wide channels separating the cords with one layer of cells. At the beginning of hibernation, application of the PAS technique revealed that glycogen granules spread heterogeneously within the hepatocyte cytoplasm and appeared dark pink in colour while at the end of hibernation these granules decreased in quantity and appeared light pink in colour. Large quantities of various-sized melano-macrophage aggregations were present in the liver tissue. The liver contained a very dense vascular system represented by the vessels of portal areas, the central veins, and the presence of hematopoietic tissue. |
| format | Article |
| id | doaj-art-8787d626170545eb92bc7e9cf314d8bc |
| institution | OA Journals |
| issn | 1735-3033 1735-3866 |
| language | English |
| publishDate | 2022-12-01 |
| publisher | University of Guilan |
| record_format | Article |
| series | Caspian Journal of Environmental Sciences |
| spelling | doaj-art-8787d626170545eb92bc7e9cf314d8bc2025-08-20T01:57:05ZengUniversity of GuilanCaspian Journal of Environmental Sciences1735-30331735-38662022-12-012051091109710.22124/cjes.2022.60836083Histological study of liver in Dhub lizard Uromastyx aegyptius microlepis (Blanford, 1874) during the period of hibernationJasim Mohammed Jawad0Saddama Saed Faraj1Baghdad College High School, Baghdad, IraqCollege of Education for Pure Sciences (Ibn Al-Haytham), IraqThe Iraqi dhub-lizard enters the hibernation when the temperature decreases in the winter. During this period, light microscopic analysis showed that the hepatic tissue is surrounded by a thin capsule composed mainly of collagen fibres. Trabeculae extended from this capsule towards the parenchyma were restricted to the subcapsular region and the liver tissue had no clear lobulation. Hepatocytes were arranged into one or two cell thick cords or acini contained three to five cells. Hepatocytes were polyhedral, oval and pyramidal in shape, and some of these cells demonstrated degenerative changes. Sinusoids appeared either as narrow irregular shape channels separating the hepatic cords with two layers of cells or wide channels separating the cords with one layer of cells. At the beginning of hibernation, application of the PAS technique revealed that glycogen granules spread heterogeneously within the hepatocyte cytoplasm and appeared dark pink in colour while at the end of hibernation these granules decreased in quantity and appeared light pink in colour. Large quantities of various-sized melano-macrophage aggregations were present in the liver tissue. The liver contained a very dense vascular system represented by the vessels of portal areas, the central veins, and the presence of hematopoietic tissue.https://cjes.guilan.ac.ir/article_6083_1c39d3ed73a3215baa15b86ebd61b6a0.pdfliverdhub lizarduromastyx aegyptius microlepishibernation |
| spellingShingle | Jasim Mohammed Jawad Saddama Saed Faraj Histological study of liver in Dhub lizard Uromastyx aegyptius microlepis (Blanford, 1874) during the period of hibernation Caspian Journal of Environmental Sciences liver dhub lizard uromastyx aegyptius microlepis hibernation |
| title | Histological study of liver in Dhub lizard Uromastyx aegyptius microlepis (Blanford, 1874) during the period of hibernation |
| title_full | Histological study of liver in Dhub lizard Uromastyx aegyptius microlepis (Blanford, 1874) during the period of hibernation |
| title_fullStr | Histological study of liver in Dhub lizard Uromastyx aegyptius microlepis (Blanford, 1874) during the period of hibernation |
| title_full_unstemmed | Histological study of liver in Dhub lizard Uromastyx aegyptius microlepis (Blanford, 1874) during the period of hibernation |
| title_short | Histological study of liver in Dhub lizard Uromastyx aegyptius microlepis (Blanford, 1874) during the period of hibernation |
| title_sort | histological study of liver in dhub lizard uromastyx aegyptius microlepis blanford 1874 during the period of hibernation |
| topic | liver dhub lizard uromastyx aegyptius microlepis hibernation |
| url | https://cjes.guilan.ac.ir/article_6083_1c39d3ed73a3215baa15b86ebd61b6a0.pdf |
| work_keys_str_mv | AT jasimmohammedjawad histologicalstudyofliverindhublizarduromastyxaegyptiusmicrolepisblanford1874duringtheperiodofhibernation AT saddamasaedfaraj histologicalstudyofliverindhublizarduromastyxaegyptiusmicrolepisblanford1874duringtheperiodofhibernation |