title: Cortical alterations of angiotensin converting enzyme, angiotensin II and AT1 receptor in Alzheimer's dementia.
abstract: We investigated the immunohistochemical alterations of angiotensin converting enzyme (ACE), angiotensin II and AT1 receptor in the parietal cortex in Alzheimer's dementia (AD) to reveal the contributive role of the brain renin-angiotensin system in the disease process. In controls, ACE, angiotensin II and AT1 immunoreactivities were localized to pyramidal neurons of the cortex. The staining intensity was distinctly increased in AD for all three antigens, involving predominantly cortical layer V, which may reflect the enhanced brain renin-angiotensin system activity in the disease process. In addition, a prominent perivascular ACE and angiotensin II immunoreactivity surrounding some cortical vessels in aged controls and AD patients points to an underlying microvascular pathology in the process of neurodegeneration.
authors.affiliation: Department of Psychiatry, University of Basel, Wilhelm Klein-Str.27, CH-4054, Basel, Switzerland. esavaskan@datacomm.ch
authors.forename: E
authors.initials: E
authors.lastname: Savaskan
authors.forename: C
authors.initials: C
authors.lastname: Hock
authors.forename: G
authors.initials: G
authors.lastname: Olivieri
authors.forename: S
authors.initials: S
authors.lastname: Bruttel
authors.forename: C
authors.initials: C
authors.lastname: Rosenberg
authors.forename: C
authors.initials: C
authors.lastname: Hulette
authors.forename: F
authors.initials: F
authors.lastname: Müller-Spahn
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000544:Alzheimer Disease / Q000378:metabolism* / Q000473:pathology; D000804:Angiotensin II / Q000032:analysis / Q000378:metabolism*; D002540:Cerebral Cortex / Q000737:chemistry / Q000378:metabolism* / Q000473:pathology; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D008875:Middle Aged; D007703:Peptidyl-Dipeptidase A / Q000032:analysis / Q000378:metabolism*; D044140:Receptor, Angiotensin, Type 1; D044139:Receptor, Angiotensin, Type 2; D011945:Receptors, Angiotensin / Q000032:analysis / Q000378:metabolism*; D012084:Renin-Angiotensin System
chemical_list: D044140:Receptor, Angiotensin, Type 1; D044139:Receptor, Angiotensin, Type 2; D011945:Receptors, Angiotensin; D000804:Angiotensin II; D007703:Peptidyl-Dipeptidase A