Ultrastructural immunocytochemical studies of the localization and distribution of somatostatin, calcitonin, calcitonin gene-related peptide, and substance P in the bat thyroid follicle
| Autor: | Michael D. Gershon, Eladio A. Nunez, Robert F. Payette, Hadassah Tamir |
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| Rok vydání: | 1988 |
| Předmět: |
Calcitonin
medicine.medical_specialty Calcitonin Gene-Related Peptide Immunocytochemistry Thyroid Gland Substance P Calcitonin gene-related peptide Biology chemistry.chemical_compound Internal medicine Chiroptera medicine Animals Basement membrane Nerve Endings Thyroid Neuropeptides Agricultural and Biological Sciences (miscellaneous) Immunohistochemistry Microscopy Electron Endocrinology medicine.anatomical_structure Somatostatin chemistry Anatomy Free nerve ending |
| Zdroj: | The Anatomical record. 221(3) |
| ISSN: | 0003-276X |
| Popis: | Electron microscope immunocytochemistry was used to determine the intracellular localization and distribution among follicular elements of four peptides: calcitonin, somatostatin, calcitonin gene-related peptide (CGRP), and substance P in the thyroid glands of bats captured in the prehibernation phase of their annual life cycle. Previous studies have shown that this period of the hibernation-activity cycle is characterized by the accumulation and storage of secretory granules in parafollicular cells. Sites of binding of primary antisera to each of the four peptides were identified by means of affinity-purified secondary antisera directly coupled to colloidal gold particles. Calcitonin and somatostatin immunoreactivities were found in all parafollicular cells examined and in every secretory granule within these cells. CGRP was also found in all parafollicular cells examined (n = 75) but only in about half of their secretory granules. In contrast to these peptides, substance P immunoreactivity was not found in any parafollicular cells, but was localized exclusively in nerve endings within the basement membrane of the follicle. |
| Databáze: | OpenAIRE |
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