title: The role of chromogranins in the secretory pathway.
abstract: Chromogranins (Cgs) are acidic proteins implicated in several physiological processes, including the biogenesis and sorting of secretory vesicles, the generation of bioactive peptides, and the accumulation of soluble species inside large dense core vesicles (LDCV). Indeed, Cgs are the main protein component of the vesicular matrix in LDCV, and they are involved in the concentration of soluble species like neurotransmitters and calcium. Experiments using electrochemical techniques such amperometry, patch amperometry, and intracellular electrochemistry have clarified the functional roles of Cgs in the accumulation and release of catecholamines. We have focused this review at a single event of exocytosis of chromaffin cells from three mouse strains lacking Cgs. Accordingly, in this brief review, we will focus on the role of Cgs in maintaining the intravesicular environment of secretory vesicles and in exocytosis, bringing together the most recent findings from studies on adrenal chromaffin cells.
authors.forename: Judith
authors.initials: J
authors.lastname: Estevez-Herrera
authors.forename: Marta R
authors.initials: MR
authors.lastname: Pardo
authors.forename: Natalia
authors.initials: N
authors.lastname: Dominguez
authors.forename: Daniel
authors.initials: D
authors.lastname: Pereda
authors.forename: Jose D
authors.initials: JD
authors.lastname: Machado
authors.forename: Ricardo
authors.initials: R
authors.lastname: Borges
mesh_terms: D000818:Animals; D002395:Catecholamines / Q000502:physiology; D019439:Chromaffin Cells / Q000166:cytology; D002864:Chromogranins / Q000235:genetics / Q000502:physiology*; D005089:Exocytosis; D051379:Mice; D018377:Neurotransmitter Agents / Q000502:physiology; D055571:Secretory Pathway; D022142:Secretory Vesicles / Q000502:physiology
chemical_list: D002395:Catecholamines; D002864:Chromogranins; D018377:Neurotransmitter Agents