学術論文
岩手県立大学盛岡短期大学部研究論集第15号2013年3月
BullelinofMol・iokaJuniorCollegelwatePre従cturalUniversity,No.l51‑6MarchZOl3
E従ctsofnmorBearingonSerumandLiverLipidLevelsinSatoLungCarcinoma
(SLC)‑ImplantedRats
佐藤肺癌移植ラットにおける血青および肝臓脂質レベルに対する担癌の影響
MasashiKAWALSAKrl 川 崎 雅 志
T11ee碇ctsoftumor造beaIingonserumandliverlipidlevelsweneinvestigatedinSatolLmgca1℃inoma(SLC}implamedl3tsb6/compalinglonomlal
田 t s f d a d i e t肋" ( c o n m l ) a n d p a i ト f b d g m u p s 、 T i l m o r ‑ b e a r i n g 恥 w e 配 i m p l a n t e d w i t h 5 × l O 6 S L C c e l l s a n d m a i n t a i n e d f b r 2 1 d a y s 、 S e m m
totalcholeste1℃l,andespeciallyhigh‑densiwlilpopmtein(HDL)‑cholesterolandesteriiiedcholesterolconcemanons,wercsiglificanllydecreasedf b l l o w i n g t u m o r i m p l a n t a t i o n a s c o m p a l 1 e d t o t h e c o n t r o l g r o u p 、 S e r u m H D L ‑ c h o l e s t e r o l a n d e s t e l f i f i e d c h o l e s t e r o l c o n c e n n a t i o n s i n t h c p a i ト 舵 d g r o u p w e I E a I s o s i g l i f i c a n t l y d e c 唾 a s e d a s c o m p a I E d t o t h e c o n t r o l g D u p 、 T h e s e m e s u l t s s u g g e s t t h a t i n S L C ‑ i m p l a n t e d I a t s , s e m m c h o l e s t e m l
conccntmtionsundeIgochange,resultinginabnomlallipidmetabolism,andthattheseserumcholesterolconcentmnon‑IEductiveactionsmightbe due,atleastinpaIt,tolhedecIcaseiI1theibodintakeaccompaniedbythetumoILbealingslaleinaddiljontothetumo雁bearinge雌ctitselfK匂ノ。、h:cα雁ersα" 航/jip/q('1,〃(ノノ迄bBf"・"19 癌,血清および肝臓脂質,担癌
lNTRODUCTlON
ThetumorccllhasavelydistinctivemetabolismSevemlpにvious studieshaveconsideIEdthemetabolicchangCsthattakeplaceinthe hostaftertumorimplantanonMetabolicabnomlaliticsarisingfmm malnutritionandmalignancyameseeninanimalsorPatientswithcancer
c a c h c x i a 、 V h r i o u s c a n c e I s a H b c t t h c l i p i d m e t a b o l i s m . '7 ) R a t s
subcutaneouslyimplantedwiththeasciteshepatomacelllincAHlO9A showhyperlipidemiawithanotabledec1℃aseinthehigh‑densiw lipopmtein(HDL)hHctionandanenoImousincI℃aseinthe very‑low‑densitylipOpmtein(VLDL)pluslow‑densiwlipopIutein( L D L ) 症 l c t i o n s s , 7 ) d u I i n g g D w t h o f t h e s o l i d t u m o I : 5 ) A H 1 0 9 A i s a
hepatomaandoIiginates丘omthelivemThelivercamcsoutmaiorIipid metabolism,includingcholesterol,fltWacid,andtriglyceIide biosynlheses,aswellasVLDLproductionltisthemelblEconsidelEd thathcpatomacellsmayailもctlipidmelabolisminlhchostbodyfmd thatlhecancerstateafiもctslipidmelabolism・
Salollmgca1℃inoma(SLC)isamnsplamahlesolidpulmonaly lumoI・inducedinamaleDonlyuslmlnmtwilh4‑nihDquinoline l‑oxide、SLCcellsinjectedimavenouslyhavebeenfbLuldtopmduce metastaticibcionlyinthelungowithalliniectedratsdyingof
p u l m o n a I y m e t a s t a S e S 、 8 9 )
lnthep1℃sentstudyうtoinvestigatethee舵ctsoftheSLC implantationonlipidmetabolismchangesinlipidlevelsinserumand liverwe肥examinedinSLC‑implantedrats,TheSLCisalungcancer andol・iginalEslmmthelungtheIEfb1℃,theeHbctsofthcimplanted tLlmorcellsonlipidmetabolismofSLCmaybesmallascomparedto
t h e h e p a l o m a 品 7 ) w h i c h o r i g i n a t e s 6 ' o m t h e l i v e I ・ a n d i s a c t i v e i n v a n o u s
typesoflipidmetabolismlnaddition,inthetumo雁bearingstate, decmeasesinlbodintakeandbodyweightalEseenasaIEsultofa canceHnducedcachexiaTherefbre,apail湾fもedingstudywas conductcdtoinvcstigatethee舵ctsoffbodrestlictiononUlmoI達bealing imSLC‑implantcdl別ts.
MATERIALSANDMETHODS
Aノ7αAαノ7〔/dIセKs・Thisanimalexpemnentwasconducted wilhthcappmvalofthclwatePIEfectumlUniveIsityResea1℃h
EthicsCommittee・
MaleDonIyumts(1burweeksofage,JapanSLClnc.,ShizuokzL Japan)we1℃individuallyhousedinstainlesssteelcageswithwire boUomsinanaiI迄conditioI1edlwoomwhhatemperaUlreof22±2℃,a ldativehumidilyoI、55±5%,andan8:O0am・to8:00p.m.lightcycle andwelEkeptonastockpelletdietOV征;OIientalYeastCo.,1bkyo,
J a p a n ) , f b l l o w e d b y a b a s a l d i e t c o n t a i n i n g 2 0 % c a s c i n 、 ' 0 ) T 1 1 e
compositionol、lhebasaldietwasasfbllows:20%casein(Oriental YeastCo.)、13.2%a‑comstarch(O1ientalY1eastCo.),39.75%comsta1℃h(OrientalYeastCo.),10%sucmse(NissinSugar ManufncturingCo.、Tbkyo,Japan),5%cellulosepowder(Oriental YeastCo.).7%soybeanoil(OrientalYeastCo.),3.5%mineIalmixtulE
( A I N 9 3 G c o m p o s i l i o n ) ' 0 ) ( O I i e n t a l Y e a s t C o . ) , 1 % v i t a m i n m i x t u m e ( A l N 9 3 c o m p o s i t i o n ) ' 0 ) ( O r i e n t a l Y e a s t C o . ) , 0 . 2 5 % c h o l i n c b i t a l l m t c
(WtlkoPulcChcmicalIndustries,Osaka,Japan),and0.3%L‑cystine (WakoPuI・eChcmicallndustries).AfterplBliminalyibeding,thcllats*lFoodandNuuitionMaiol;ScienceofLivingDepallment・
A b b 唾 v i a t i o n s : H D L h i g j l ‑ d e n s i W l i p o p m に i n ; L C A m l e c i t h i n ‑ c h o l e s t e m l a c y l t m n s f e m s e ; L D L , I o w ‑ d e n s i M i p O p m t e i n ; P B S ( ‑ ) , p h o s p h a t e ‑ b u 碇 I 迄
edsaline;TBARS,thiobaIbituIicacid‑IEactivesubstance;VLDL,vely‑low‑densiWlipoprotcin.− 1 −