Relevance of 'adaptive' mutations arising in non-dividing cells of microorganisms to age-related changes in mutant phenotypes of neurons.

Abstract excerpt

Brattleboro rats do not produce vasopressin (VP) because of a germ-line single-base deletion (di) that causes a frame shift downstream from the VP sequences and a loss of a stop codon. The resulting frame-shifted peptide precursor does not enter the secretory pathway in hypothalamic neurons, thereby blocking the neurosecretion of VP and other peptides. Yet, from birth onwards, a subpopulation of neurons in di/di...

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