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Research article summary:
Cathepsin D exon 2 polymorphism associated with general intelligence in a healthy older population.
Abstract Extract: General intelligence is a heritable trait that is a risk factor for both the onset of dementia and the rate of cognitive decline in community-dwelling older persons. Previous studies screening for quantitative trait loci (QTLs) that influence general ... (Full abstract text below) Published 2003Jan
in Journal: Mol Psychiatry
(Language : eng)
Full Pubmed Extract
This information was retrieved, real-time, on your behalf from the public area of the Pubmed website:
1. Mol Psychiatry.
2003 Jan;8(1):14-8
Cathepsin D exon 2 polymorphism associated with general intelligence in a healthy older population.
Payton A, Holland F, Diggle P, Rabbitt P, Horan M, Davidson Y, Gibbons L, Worthington J, Ollier WE, Pendleton N
Centre for Integrated Genomic Medical Research, Manchester University, UK. tony@s1.ser.man.ac.uk
General intelligence is a heritable trait that is a risk factor for both the onset of dementia and the rate of cognitive decline in community-dwelling older persons. Previous studies screening for quantitative trait loci (QTLs) that influence general intelligence in healthy individuals have identified four loci, two of which are located within the genes insulin-like growth factor 2 receptor (IGF2R) and the Msx1 homeobox. Here, we report the finding of another QTL associated with general intelligence that is located within exon 2 of the cathepsin D (CTSD) gene. A group of 767 healthy adults with a follow-up period of over 15 years have been analyzed for cross-sectional and longitudinal trends in cognitive change using the Heim intelligence test score (AH4-1). We observed a significant association (P = 0.01) between a functional C > T (Ala > Val) transition within exon 2 of the CTSD gene that increases the secretion of pro-CTSD from the cell, and the AH4-1 score at initial testing on entry to the longitudinal study. Interestingly, CTSD is transported by IGF2R from the trans Golgi network to the lysosome.
PMID : 12556904 [PubMed - Indexed for MEDLINE]
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Full Author Information
| First Name | LastName | Initials |
| A | Payton | A |
| F | Holland | F |
| P | Diggle | P |
| P | Rabbitt | P |
| M | Horan | M |
| Y | Davidson | Y |
| L | Gibbons | L |
| J | Worthington | J |
| W E R | Ollier | WE |
| N | Pendleton | N |
Affiliation: Centre for Integrated Genomic Medical Research, Manchester University, UK. tony@s1.ser.man.ac.uk
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MESH categories and related page links
This article was linked to the MESH categories shown on the left below. The links on the right are related Memletics pages.
Category links from this article:- Aged
- Aged, 80 and over
- Aging - genetics
- Cathepsin D - genetics
- Cognition
- Cognition Disorders - genetics
- Exons
- Female
- Genotype
- Humans
- Intelligence - genetics
- Male
- Middle Aged
- Polymorphism, Genetic
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