A qualitative and quantitative electron microscopic study of differences in adrenomedullary adrenaline cells between golden hamsters and rats, with special reference to the Golgi apparatus
スポンサーリンク
概要
- 論文の詳細を見る
Ultrastructural features of adrenomedullary adrenaline (A) cells in golden hamsters and rats were investigated qualitatively and quantitatively with special reference to the Golgi apparatus. The A cells displayed a characteristic follicular arrangement, with each cell showing structural polarity in hamsters, but not apparently in rats. In hamsters, the Golgi apparatus of A cells was larger (t-test: P<0.001) and more frequently showed large and complexly organized structures (chi(2)-test: P<0.005) compared with that of rats. Quantitative analysis of the Golgi apparatus revealed differences in the size and numerical density of Golgi vesicles in relation to the animal species and region. Two-way analysis of variance (ANOVA) confirmed species difference in the size of coated vesicles (P<0.005) and interaction between species and region concerning the size of smooth-clear vesicles (P<0.01) and numerical density of granular vesicles (P<0.05). One-way ANOVA revealed regional differences in the size and numerical density of smooth-clear vesicles in rats and hamsters (P<0.01 approximately 0.001), and in the numerical density of coated vesicles in hamsters (P<0.05). Data were further analyzed by Tukey-Kramer's method. These and other reported results suggest that, in hamster A cells, the Golgi apparatus has different structural, molecular, and functional mechanisms which are at least partly related to the distinct cellular polarity and higher concentration of peptide hormones in secretory vesicles, and that in rat A cells, in contrast, loading secretory vesicles with A during the post-Golgi stage is predominant. In conclusion, the Golgi apparatus in hamster A cells shows markedly different ultrastructural features compared with that in rat A cells.
- International Society of Histology and Cytologyの論文
- 2007-10-31
著者
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KACHI Takashi
Department of Anatomical Science, University of Hirosaki Graduate School of Medicine
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Sakamoto Tomomi
Department Of Obstetrics And Gynecology Hirosaki University Graduate School Of Medicine
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KAJIHARA Satoshi
Department of Anatomical Science, Hirosaki University Graduate School of Medicine
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Kachi Takashi
Department Of Anatomical Science Hirosaki University Graduate School Of Medicine
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Kachi Takashi
Dep. Of Anatomical Sci. Univ. Of Hirosaki Graduate School Of Medicine
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Kajihara Satoshi
Department Of Anatomical Science Hirosaki University Graduate School Of Medicine
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