Mammotrope heterogeneity in the pituitary gland of European ferret,Mustela putorius furo: An immunoelectron-microscopic study |
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| Authors: | B Mohanty T Tachibana H Nogami H Ishikawa D R Naik |
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| Institution: | (1) Department of Anatomy, Jikei University School of Medicine, Minato-ku, 105 Tokyo, Japan;(2) Department of Zoology, Utkal University, 751004 Bhubaneswar, India |
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| Abstract: | Employing the superimposition technique of electron-microscopic immunocytochemistry ultrastructural heterogeneity of the mammotropes
in the pituitary gland of the European ferret,Mustela putorius furo,was studied. On the basis of the size of their secretory granules, the mammotropes were classified into three subtypes, type-I,
type-II and type-Ill, which may correspond to different developmental or physiological states of a single cell type. Simultaneous
study of mammotropes and somatotropes in several pairs of serial semithin sections demonstrated the occasional occurrence
of bihormonal somatomammotropes /mammosomatotropes which may represent a transitional stage of the progenitor stem-somatotrope
during its differentiation into mammotrope; alternatively it may be a functional intermediate during the cross-transformation
of somatotrope into mammotrope or
vice versa. |
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| Keywords: | Pituitary gland mammotrope heterogeneity somatomammotrope Immunoelectron microscopy European ferret (Mustela) |
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