Linked Life Data

15777622

Source:http://linkedlifedata.com/resource/pubmed/id/15777622

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2005-4-12
pubmed:abstractText
Megalin, a family of endocytic receptors related to the low-density lipoprotein (LDL) receptor, is a major pathway for proximal tubular aminoglycoside accumulation. We previously reported that aminoglycoside antibiotics reduce SGLT1-dependent glucose transport in pig proximal tubular epithelial LLC-PK1 cells in parallel with the order of their nephrotoxicity. In this study, using a model of gentamicin C (GMC)-induced reduction in SGLT1 activity, we examined whether ligands for megalin protect LLC-PK1 cells from the GMC-induced reduction in SGLT1 activity. We employed apolipoprotein E3 (apoE3) and lactoferrin as ligands for megalin. Then the cells were treated with various concentrations of apoE3, lactoferrin and bovine serum albumin with or without 100 microg/ml of GMC, and the SGLT1-dependent methyl alpha-D-glucopyranoside (AMG) uptake and levels of SGLT1 expression were determined. As a result, we demonstrated that the apoE3 significantly protects these cells from GMC-induced reduction in AMG uptake, but neither lactoferrin nor albumin does. In accord with a rise in AMG uptake activity, the mRNA and protein levels of SGLT1 were apparently up-regulated in the presence of apoE3. Furthermore, we found that the uptake of [3H] gentamicin is decreased by apoE3, and that apoE3 showed obvious protection against the GMC-dependent N-acetyl-beta-D-glucosamidase (NAG) release from LLC-PK1 cells. Thus, these results indicate that apoE3 could be a valuable tool for the prevention of aminoglycoside nephrotoxicity.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0006-3002
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
1722
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
247-53
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Apolipoprotein E3 (apoE3) safeguards pig proximal tubular LLC-PK1 cells against reduction in SGLT1 activity induced by gentamicin C.
pubmed:affiliation
Numazu Bio-Medical Research Institute, Microbial Chemistry Research Center, 18-24 Miyamoto, Numazu-shi, Shizuoka 410-0301, Japan.
pubmed:publicationType
Journal Article