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1、2015年职称英语卫生B级原文出处(完型填空) 第十七篇EatingPotatoesGivesYourImmuneSystemaBoost Eatingpotatoesisnotonlygoodforbowelhealth,butalsoforthewholeimmunesystem,especiallywhentheycomeintheformofapotatosaladoreatencold.Inastudyonananimalmodel,researchersinSpainfoundthatpigsfedlargeq
2、uantitiesofrawpotatostarch(RPS)1notonlyhadahealthierbowel,butalsodecreasedlevelsofwhitebloodcells,suchasleucocytesandlymphocytesintheirblood.Whitebloodcellsareproducedasaresultofinflammationordisease,generallywhenthebodyischallenged. Thegeneraldown-regulationofleuc
3、ocytesobservedbytheSpanishresearcherssuggestsanoverallbeneficialeffect,agenerallymorehealthybody.2Thereductioninleukocytelevelswasabout15percent.Lowerlymphocytelevelsarealsoindicativeofreducedlevelsofinflammation,buttheobservedreductioninbothlymphocytedensityandlymp
4、hocyteapoptosisissurprising. Inwhatwasthelongeststudyofitskind,pigswerefedRPSover14weekstofindouttheeffectofstarchonbowelhealth.“Theuseofrawpotatostarchinthisexperimentisdesignedtosimulatetheeffectsofadiethighinresistantstarch,"saidstudyleaderJoseFranciscoPerezatth
5、eUniversitatAutonomadeBarcelona3,Spain. Humansdonoteatrawpotatoes,buttheydoeatalotoffoodsthatcontainresistantstarch,suchascoldboiledpotatoes,legumes,grains,greenbananas,pastaandcereals.About10percentofthestarcheatenbyhumanisresistantstarch-starchthatisnotdigestedin
6、thesmallintestineandsoisshuntedintothelargeintestinewhereitferments.Starchconsumptionisthoughttoreducetheriskoflargebowelcancerandmayalsohaveaneffectonirritablebowelsyndrome(IBS)4. ImmunologyexpertLenaOman’steampreviouslyfoundthattheoveralllymphocytelevelsdonotvary
7、forIBSpatients,butthatlymphocytesaretransferredfromtheperipheralbloodtothegut,whichsupportthehypothesisofIBSbeingatleastpartiallyallinflammatorydisorder.ShesaysthedecreaseinlymphocytesobservedbytheSpanishisthereforeinteresting,andadietofresistantstarchmaybeworthtryi
8、nginIBSpatients.OmaniscurrentlyattheDepartmentofInternalMedicine,GoteborgUniversity,Sweden5.ThestudyispublishedintheJournalChemistryandInd
