Immunocytochemical Evidence for the Presence of a Mutant Vasopressin Precursor in the Supraoptic Nucleus of the Homozygous Brattleboro Rat

Overview

Journal Cell Tissue Res

Specialties Anatomy & Histology
Cell Biology

Date 1986 Jan 1

PMID 3719667

Citations 3

Authors

S E Guldenaar

P Nahke

B T PICKERING

Affiliations

Soon will be listed here.

Abstract

CP-14, a tetradecapeptide from the predicted mutant vasopressin precursor in the homozygous Brattleboro rat was detected immunocytochemically in the supraoptic nucleus of homozygous Brattleboro but not normal rats. The staining was localized to the periphery of the perikarya. CP-14 immunoreactivity was not found in the neural lobes, paraventricular nuclei, accessory nuclei or suprachiasmatic nuclei of either homozygous Brattleboro or normal rats. Vasopressin immunoreactivity was found in the neural lobe and in the perinuclear region of neurons of the supraoptic, paraventricular, suprachiasmatic and accessory nuclei of normal rats. Vasopressin immunoreactivity was also found in homozygous Brattleboro rats, mainly in the ventral part of the supraoptic nucleus: densely stained solitary cells were found amongst other faintly stained perikarya. In both cell-types the staining was mainly in the periphery of the perikarya. No vasopressin immunoreactivity was detected in the paraventricular nuclei, suprachiasmatic nuclei, accessory nuclei or neural lobe of homozygous Brattleboro rats. CP-14 and vasopressin immunoreactivities were found to be co-localized; both were present in the periphery of the same perikarya of the supraoptic nuclei of homozygous Brattleboro rats. Differential staining was found with antioxytocin serum in both normal rats and homozygous Brattleboro rats: separate neurons were stained for either oxytocin or vasopressin and CP-14. Immunoreactive oxytocin was found mainly in the perinuclear region of the neurons from the supraoptic, paraventricular and accessory nuclei.

Citing Articles

Mutant vasopressin precursor in the endoplasmic reticulum of the Brattleboro rat. Ultrastructural evidence from individual "vasopressin" cells localized with the light microscope by use of a new gold/silver method for immunostain enhancement.

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PMID: 2762332 PMC: 297851. DOI: 10.1073/pnas.86.16.6417.

A single base substitution in the coding region for neurophysin II associated with familial central diabetes insipidus.

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