By A.D. Roses, K.H. Weisgraber, Y. Christen
There is now huge genetic proof that the kind four allele of the apolipoprotein E gene is an important susceptibility issue linked to late-onset Alzheimer's sickness, the typical type of the ailment outlined as beginning after sixty years of age. The position of apolipoprotein E in general mind metabolism and within the pathogenesis of Alzheimer's affliction are new and interesting avenues of analysis. This booklet, written by means of the main remarkable scientists during this new filed, is the 1st presentation of effects in regards to the implications of apolipoprotein E at the genetics, telephone biology, neuropathology, biochemistry, and healing administration of Alzheimer's disease.
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Extra resources for Apolipoprotein E and Alzheimer’s Disease
1993). More interestingly, a gene dosage effect was observed in both familial (Corder et al. 1993) and sporadic (Poirier et al. , as age of onset increases, £4 allele copy number decreases). Women, who are generally at a greater risk of developing AD, showed increased apo£4 allele frequency when compared to age-matched men (Poirier et al. 1993b). Apolipoprotein E4 and ~ Amyloid ApoE-like immunoreactivity has been found to be associated with amyloid in senile plaques, cerebral vessels and neurofibrillary tangles (Namba et al.
1989; Pitas et al. 1987; Skene and Shooter 1983; Muller et al. 1986; Ignatius et al. 1986). These studies led to the observation that the presence of apoE influences neurite outgrowth in primary neuronal cultures (Handelmann et al. 1992). More recently, apoE was shown to influence this outgrowth in an isoform-specific manner, with apoE3, the most common isoform, promoting neurite outgrowth and apoE4, the product of the AD susceptibility gene, retarding outgrowth (Nathan et al. 1994). This difference may have a profound effect on normal nerve maintenance and repair of neurons that occur during remodeling of synaptic connections.
Simmons T, Mahley RW, Welsgraber KH, Agard DA (1994) Human apohpoprotem E Role of argmme 61m medlatmg the hpoprotem preferences of the E3 and E4 Isoforms J BIOI Chern 269 22358-22365 IgnatIUS MJ, Geblcke-Harter PJ, Skene IHP, Schllhng lW. Welsgraber KH, Mahley RW, Shooter EM (1986) ExpreSSIOn of apohpoprotem E dunng nerve degeneratIOn and regeneration Proc Natl Acad SCI USA 83 1125-1129 Handelmann GE, Boyles lK, Welsgraber KH. Mahley RW. Pitas RE (1992) Effects of apohpoprotem E, fi-very low denSity hpoprotems, and cholesterol on the extensIOn of neuntes by rabbit dorsal root ganghon neurons m Vitro J Lipid Res 33 1677-1688 Ma 1, Yee A.