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Diet-InducedAtherosclerosis/HypercholesterolemiainRodentModelsBriefScientificLiteratureReview-October2008byMichaelA.Pellizzon,Ph.D.SeniorScientist,ResearchDiets,Inc.Atherosclerosisisacomplexchronicdiseasecharacterizedbytheaccumulationoflipidswithinarterialwallsthateventuallygoontoformplaques,whichcancausenarrowing,hardening,and/orcompleteblockageofarteries.Onewellknownriskfactorinhumansishypercholesterolemia(i.e.elevatedtotalcholesterol(TC)andlow-densitylipoproteincholesterol(LDL-C))(1),andotherimportantcontributorstothisdiseaseincludeinflammation,oxidativestress,andinsulinresistance(2,3).Foodshighindietarysaturatedfat(SF)andcholesterol(i.e.“Western-typediets”)havebeenlinkedtoelevationsincirculatingcholesterollevels(inparticular,LDL-C)(4),promptingtherecommendationthathumanslimittheintakeofthesedietaryconstituents(1).Likehumans,Western-typedietscaninduceelevatedLDL-Candatherosclerosisincertainrodentmodels(i.e.mice,hamsters,guineapigs).erefore,theuseofsuchdietsforpromotingatherosclerosisinthesemodelshasbeenavaluabletoolforbothgainingmoreunderstandingofthisdiseaseandtestingtherapiesthatcanpotentiallyreverseit. |
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