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Veterinary Research Forum، جلد ۴، شماره ۳، صفحات ۱۳۷-۱۴۴
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| عنوان فارسی |
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| چکیده فارسی مقاله |
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| کلیدواژه‌های فارسی مقاله |
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| عنوان انگلیسی |
Cytochemical identification of endocrine thymus of chicken in relation to aging |
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| چکیده انگلیسی مقاله |
Age related cytochemical changes of thymic endocrine cells were studied in 78 day old chicks at five day interval to age of day 60 employing a panel of cytochemical stains. Methenamine silver revealed cell morphology including cell processes distinctly while diamine silver revealed a stronger argentaffinity in these cells. The cells had greater affinity for diamine silver compared to methenamine silver (Argentaffin), followed by formaldehyde induced auto-fluorescence, argyrophilia, lead hematoxylin and HCl-toluidine. The chromaffin reaction was the weakest. Cytochemically, three different endocrine cell populations i.e. argentaffin cells, argyrophilic cells and amine precursor uptake and decarboxylation series (APUD)/chromaffin cells, formed the resident population of thymic endocrine cells. Occurrence of numerous serotonin storing cells, moderately frequent APUD cells, and fewer chromaffin as well as mast cells suggests for a conspicuous reservoir of amine storing cells in thymus. Morphologically argentaffin cells were of four types i.e. the peripherally granulated spherical cells (Type-I), densely granulated oval cells (Type-II), pyramidal argentaffin cells (Type-III) and diffusely granulated elongated cells (Type-IV). The type-II argentaffin cells were most frequent in the medulla followed by the type-I cells and the type-III cells. The type-IV cells were least in frequency. The age related changes in frequency of these cells are also discussed. |
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| کلیدواژه‌های انگلیسی مقاله |
Aging,Chicken,Endocrine cells,Serotonin cells,Thymus |
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| نویسندگان مقاله |
uma kanta میشرا | uma kanta
department of anatomy, histology and embryology, faculty of veterinary science and animal husbandry, orissa university of agriculture and technology, bhubaneswar, india
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| نشانی اینترنتی |
http://vrf.iranjournals.ir/article_2966_79a7004184006e4572d1ea243244b7ec.pdf |
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| کد مقاله (doi) |
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| زبان مقاله منتشر شده |
en |
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