Glucagonomas: Ultrastructure and immunocytochemistry
نویسندگان
چکیده
منابع مشابه
Pancreatic endocrine cells in Bufo bufo: immunocytochemistry and ultrastructure.
The endocrine pancreas of the toad consists of rounded islets of various sizes embedded in the exocrine tissue. Isolated cells are also present. At least 4 types of endocrine cell are distinguishable by shape, size and electrondensity of the secretory granules as well as by their immunoreactivity with different antisera: insulin, somatostatin, pancreatic polypeptide, and glucagon cells. Insulin...
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One of the main characters used in acoel taxonomy is the male copulatory organ. Despite this, ultrastructural studies of this structure are scarce. We studied the ultrastructure of the copulatory organ in eight species of acoels belonging to the taxon Childia. Members of Childia possess a well-developed conical or cylindrical stylet-like structure composed of needles. Immunogold cytochemistry o...
متن کاملDo glucagonomas always produce glucagon?
Pancreatic islet α-cell tumours that overexpress proglucagon are typically associated with the glucagonoma syndrome, a rare disease entity characterised by necrolytic migratory erythema, impaired glucose tolerance, thromboembolic complications and psychiatric disturbances. Paraneoplastic phenomena associated with enteric overexpression of proglucagon-derived peptides are less well recognized an...
متن کاملSecretion by Glucagonomas of a Possible
A B S T R A C T Five patients with glucagonomas had elevated plasma levels of total glucagon immunoreactivity. Gel filtrations of these plasma samples on Bio-Gel P30 columns showed that most of the immunoreactivity eluted in the 3,500-(true glucagon) and 9,000-dalton fractions. After the administration of alpha cell effectors, changes in total glucagon immunoreactivity were seen which were acco...
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ژورنال
عنوان ژورنال: Cancer
سال: 1983
ISSN: 0008-543X,1097-0142
DOI: 10.1002/1097-0142(19830315)51:6<1091::aid-cncr2820510620>3.0.co;2-g