JP5295652B2 - 光障害の軽減剤 - Google Patents
光障害の軽減剤 Download PDFInfo
- Publication number
- JP5295652B2 JP5295652B2 JP2008156439A JP2008156439A JP5295652B2 JP 5295652 B2 JP5295652 B2 JP 5295652B2 JP 2008156439 A JP2008156439 A JP 2008156439A JP 2008156439 A JP2008156439 A JP 2008156439A JP 5295652 B2 JP5295652 B2 JP 5295652B2
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- JP
- Japan
- Prior art keywords
- group
- iron
- aminolevulinic acid
- administration
- fluorescence
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000008832 photodamage Effects 0.000 title claims description 17
- ZGXJTSGNIOSYLO-UHFFFAOYSA-N 88755TAZ87 Chemical compound NCC(=O)CCC(O)=O ZGXJTSGNIOSYLO-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229960002749 aminolevulinic acid Drugs 0.000 claims abstract description 36
- 150000003839 salts Chemical class 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 7
- 239000004480 active ingredient Substances 0.000 claims abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 28
- -1 aralkyl ester Chemical class 0.000 claims description 14
- 229910052742 iron Inorganic materials 0.000 claims description 11
- 239000003638 chemical reducing agent Substances 0.000 claims description 9
- 150000007524 organic acids Chemical class 0.000 claims description 9
- 125000000217 alkyl group Chemical group 0.000 claims description 8
- 235000005985 organic acids Nutrition 0.000 claims description 4
- 150000002505 iron Chemical class 0.000 claims description 3
- 159000000014 iron salts Chemical class 0.000 claims description 3
- 150000004697 chelate complex Chemical class 0.000 claims description 2
- 150000002506 iron compounds Chemical class 0.000 abstract description 9
- 125000004432 carbon atom Chemical group C* 0.000 description 18
- 210000004027 cell Anatomy 0.000 description 14
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- KSFOVUSSGSKXFI-GAQDCDSVSA-N CC1=C/2NC(\C=C3/N=C(/C=C4\N\C(=C/C5=N/C(=C\2)/C(C=C)=C5C)C(C=C)=C4C)C(C)=C3CCC(O)=O)=C1CCC(O)=O Chemical compound CC1=C/2NC(\C=C3/N=C(/C=C4\N\C(=C/C5=N/C(=C\2)/C(C=C)=C5C)C(C=C)=C4C)C(C)=C3CCC(O)=O)=C1CCC(O)=O KSFOVUSSGSKXFI-GAQDCDSVSA-N 0.000 description 9
- 239000012190 activator Substances 0.000 description 9
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- 150000003278 haem Chemical class 0.000 description 6
- APVZWAOKZPNDNR-UHFFFAOYSA-L iron(ii) citrate Chemical compound [Fe+2].OC(=O)CC(O)(C([O-])=O)CC([O-])=O APVZWAOKZPNDNR-UHFFFAOYSA-L 0.000 description 6
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- ZLHFONARZHCSET-UHFFFAOYSA-N 5-aminolevulinic acid hydrochloride Chemical compound Cl.NCC(=O)CCC(O)=O ZLHFONARZHCSET-UHFFFAOYSA-N 0.000 description 5
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- QPCDCPDFJACHGM-UHFFFAOYSA-N N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC(O)=O QPCDCPDFJACHGM-UHFFFAOYSA-N 0.000 description 4
- 125000003118 aryl group Chemical group 0.000 description 4
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- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
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- 125000003710 aryl alkyl group Chemical group 0.000 description 3
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- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
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- RYQOILLJDKPETL-UHFFFAOYSA-N 5-aminolevulinic acid hexyl ester Chemical compound CCCCCCOC(=O)CCC(=O)CN RYQOILLJDKPETL-UHFFFAOYSA-N 0.000 description 2
- 229950000258 5-aminolevulinic acid hexyl ester Drugs 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 description 2
- RGHNJXZEOKUKBD-SQOUGZDYSA-N D-gluconic acid Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 description 2
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- 229920002307 Dextran Polymers 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 2
- 108090000790 Enzymes Proteins 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 241000124008 Mammalia Species 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 235000007144 ferric diphosphate Nutrition 0.000 description 2
- 239000011706 ferric diphosphate Substances 0.000 description 2
- CADNYOZXMIKYPR-UHFFFAOYSA-B ferric pyrophosphate Chemical compound [Fe+3].[Fe+3].[Fe+3].[Fe+3].[O-]P([O-])(=O)OP([O-])([O-])=O.[O-]P([O-])(=O)OP([O-])([O-])=O.[O-]P([O-])(=O)OP([O-])([O-])=O CADNYOZXMIKYPR-UHFFFAOYSA-B 0.000 description 2
- 229940036404 ferric pyrophosphate Drugs 0.000 description 2
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- 239000011790 ferrous sulphate Substances 0.000 description 2
- 125000003707 hexyloxy group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])O* 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 230000003834 intracellular effect Effects 0.000 description 2
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 2
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 2
- YUUAYBAIHCDHHD-UHFFFAOYSA-N methyl 5-aminolevulinate Chemical compound COC(=O)CCC(=O)CN YUUAYBAIHCDHHD-UHFFFAOYSA-N 0.000 description 2
- LQPLDXQVILYOOL-UHFFFAOYSA-I pentasodium;2-[bis[2-[bis(carboxylatomethyl)amino]ethyl]amino]acetate Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[O-]C(=O)CN(CC([O-])=O)CCN(CC(=O)[O-])CCN(CC([O-])=O)CC([O-])=O LQPLDXQVILYOOL-UHFFFAOYSA-I 0.000 description 2
- 229940124597 therapeutic agent Drugs 0.000 description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
- DIWZKTYQKVKILN-VKHMYHEASA-N (2s)-2-(dicarboxymethylamino)pentanedioic acid Chemical compound OC(=O)CC[C@@H](C(O)=O)NC(C(O)=O)C(O)=O DIWZKTYQKVKILN-VKHMYHEASA-N 0.000 description 1
- 125000004169 (C1-C6) alkyl group Chemical group 0.000 description 1
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 description 1
- ZEYKLMDPUOVUCR-UHFFFAOYSA-N 2-chloro-5-(trifluoromethyl)benzenesulfonyl chloride Chemical compound FC(F)(F)C1=CC=C(Cl)C(S(Cl)(=O)=O)=C1 ZEYKLMDPUOVUCR-UHFFFAOYSA-N 0.000 description 1
- RPERJPYDELTDMR-UHFFFAOYSA-K 2-hydroxyethyl(trimethyl)azanium;2-hydroxypropane-1,2,3-tricarboxylate Chemical compound C[N+](C)(C)CCO.C[N+](C)(C)CCO.C[N+](C)(C)CCO.[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O RPERJPYDELTDMR-UHFFFAOYSA-K 0.000 description 1
- YNVZDODIHZTHOZ-UHFFFAOYSA-K 2-hydroxypropanoate;iron(3+) Chemical compound [Fe+3].CC(O)C([O-])=O.CC(O)C([O-])=O.CC(O)C([O-])=O YNVZDODIHZTHOZ-UHFFFAOYSA-K 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
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- 101100269552 Arabidopsis thaliana ALA6 gene Proteins 0.000 description 1
- 208000003174 Brain Neoplasms Diseases 0.000 description 1
- FERIUCNNQQJTOY-UHFFFAOYSA-M Butyrate Chemical compound CCCC([O-])=O FERIUCNNQQJTOY-UHFFFAOYSA-M 0.000 description 1
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Natural products CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 1
- 102000018832 Cytochromes Human genes 0.000 description 1
- 108010052832 Cytochromes Proteins 0.000 description 1
- HNBPGMZUKDCQEE-UWTATZPHSA-N D-alanyl phosphate Chemical compound C[C@@H](N)C(=O)OP(O)(O)=O HNBPGMZUKDCQEE-UWTATZPHSA-N 0.000 description 1
- RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 description 1
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 1
- BDAGIHXWWSANSR-UHFFFAOYSA-M Formate Chemical compound [O-]C=O BDAGIHXWWSANSR-UHFFFAOYSA-M 0.000 description 1
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
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- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 1
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- 125000003277 amino group Chemical group 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
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- XNSQZBOCSSMHSZ-UHFFFAOYSA-K azane;2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxymethyl)amino]acetate;iron(3+) Chemical compound [NH4+].[Fe+3].[O-]C(=O)CN(CC([O-])=O)CCN(CC([O-])=O)CC([O-])=O XNSQZBOCSSMHSZ-UHFFFAOYSA-K 0.000 description 1
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- BVEUYZRNNURYFB-DFWYDOINSA-N azanium (4S)-4-amino-5-(dicarboxymethoxy)-5-oxopentanoate Chemical compound N[C@@H](CCC(=O)[O-])C(=O)OC(C(=O)O)C(=O)O.[NH4+] BVEUYZRNNURYFB-DFWYDOINSA-N 0.000 description 1
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- MDXRFOWKIZPNTA-UHFFFAOYSA-L butanedioate;iron(2+) Chemical compound [Fe+2].[O-]C(=O)CCC([O-])=O MDXRFOWKIZPNTA-UHFFFAOYSA-L 0.000 description 1
- XTLFWLBUAMNLGH-UHFFFAOYSA-N butyl 5-amino-4-oxopentanoate Chemical compound CCCCOC(=O)CCC(=O)CN XTLFWLBUAMNLGH-UHFFFAOYSA-N 0.000 description 1
- 125000004063 butyryl group Chemical group O=C([*])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
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- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- ZNRVBINYQYCPPK-QTNFYWBSSA-L disodium (2S)-2-(dicarboxymethylamino)pentanedioate Chemical compound [Na+].[Na+].OC(=O)C(C(O)=O)N[C@H](C([O-])=O)CCC([O-])=O ZNRVBINYQYCPPK-QTNFYWBSSA-L 0.000 description 1
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- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- 125000003754 ethoxycarbonyl group Chemical group C(=O)(OCC)* 0.000 description 1
- CWULDSIGYRKXFB-UHFFFAOYSA-N ethyl 5-amino-4-oxopentanoate Chemical compound CCOC(=O)CCC(=O)CN CWULDSIGYRKXFB-UHFFFAOYSA-N 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- VEPSWGHMGZQCIN-UHFFFAOYSA-H ferric oxalate Chemical compound [Fe+3].[Fe+3].[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O VEPSWGHMGZQCIN-UHFFFAOYSA-H 0.000 description 1
- 239000004222 ferrous gluconate Substances 0.000 description 1
- 235000013924 ferrous gluconate Nutrition 0.000 description 1
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- 239000004503 fine granule Substances 0.000 description 1
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- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 238000001361 intraarterial administration Methods 0.000 description 1
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- PVFSDGKDKFSOTB-UHFFFAOYSA-K iron(3+);triacetate Chemical compound [Fe+3].CC([O-])=O.CC([O-])=O.CC([O-])=O PVFSDGKDKFSOTB-UHFFFAOYSA-K 0.000 description 1
- YPJCVYYCWSFGRM-UHFFFAOYSA-H iron(3+);tricarbonate Chemical compound [Fe+3].[Fe+3].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O YPJCVYYCWSFGRM-UHFFFAOYSA-H 0.000 description 1
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- VRIVJOXICYMTAG-IYEMJOQQSA-L iron(ii) gluconate Chemical compound [Fe+2].OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O.OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O VRIVJOXICYMTAG-IYEMJOQQSA-L 0.000 description 1
- FZWBNHMXJMCXLU-BLAUPYHCSA-N isomaltotriose Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@@H]1OC[C@@H]1[C@@H](O)[C@H](O)[C@@H](O)[C@@H](OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O)O1 FZWBNHMXJMCXLU-BLAUPYHCSA-N 0.000 description 1
- 125000003253 isopropoxy group Chemical group [H]C([H])([H])C([H])(O*)C([H])([H])[H] 0.000 description 1
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- BKJXSPNFVILSSW-UHFFFAOYSA-N n'-[2-(2-aminoethylamino)ethyl]ethane-1,2-diamine;iron Chemical compound [Fe].NCCNCCNCCN BKJXSPNFVILSSW-UHFFFAOYSA-N 0.000 description 1
- 125000006606 n-butoxy group Chemical group 0.000 description 1
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- XVNIJEYEHHBPPR-UHFFFAOYSA-N pentyl 5-amino-4-oxopentanoate Chemical compound CCCCCOC(=O)CCC(=O)CN XVNIJEYEHHBPPR-UHFFFAOYSA-N 0.000 description 1
- 239000000546 pharmaceutical excipient Substances 0.000 description 1
- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 208000017983 photosensitivity disease Diseases 0.000 description 1
- 231100000434 photosensitization Toxicity 0.000 description 1
- 239000003504 photosensitizing agent Substances 0.000 description 1
- 239000002504 physiological saline solution Substances 0.000 description 1
- 150000004032 porphyrins Chemical class 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 125000001501 propionyl group Chemical group O=C([*])C([H])([H])C([H])([H])[H] 0.000 description 1
- KYELCRMQMAPVJB-UHFFFAOYSA-N propyl 5-amino-4-oxopentanoate Chemical compound CCCOC(=O)CCC(=O)CN KYELCRMQMAPVJB-UHFFFAOYSA-N 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 210000004927 skin cell Anatomy 0.000 description 1
- OOTLZFANIDERRE-UHFFFAOYSA-K sodium butanedioic acid 2-hydroxypropane-1,2,3-tricarboxylate iron(2+) Chemical compound [Na+].[Fe+2].C(CC(O)(C(=O)[O-])CC(=O)[O-])(=O)[O-].C(CCC(=O)O)(=O)O OOTLZFANIDERRE-UHFFFAOYSA-K 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- SRFKWQSWMOPVQK-UHFFFAOYSA-K sodium;2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxymethyl)amino]acetate;iron(2+) Chemical compound [Na+].[Fe+2].OC(=O)CN(CC([O-])=O)CCN(CC([O-])=O)CC([O-])=O SRFKWQSWMOPVQK-UHFFFAOYSA-K 0.000 description 1
- KXFFQVUPQCREHA-UHFFFAOYSA-K sodium;2-hydroxypropane-1,2,3-tricarboxylate;iron(2+) Chemical compound [Na+].[Fe+2].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KXFFQVUPQCREHA-UHFFFAOYSA-K 0.000 description 1
- 230000003381 solubilizing effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000003826 tablet Substances 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 229940070710 valerate Drugs 0.000 description 1
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
Description
さらに5−アミノレブリン酸の投与は、プロトポルフィリンIXの生成を利用した脳腫瘍の術中診断にも応用されている(非特許文献3)。
従って、本発明の目的は、5−アミノレブリン酸投与時に生じる光障害を軽減する手段を提供することにある。
また、本発明は、(A)5−アミノレブリン酸、その誘導体又はそれらの塩と(B)鉄化合物とを組み合せてなる細胞の活性化剤を提供するものである。
5−アミノレブリン酸又は誘導体としては、次の一般式(1)で表されるものが挙げられる。
R2R1NCH2COCH2CH2COR3 (1)
[式中、R1及びR2は各々独立に、水素原子、アルキル基、アシル基、アルコキシカルボニル基、アリール基又はアラルキル基を示し;R3はヒドロキシ基、アルコキシ基、アシルオキシ基、アルコキシカルボニルオキシ基、アリールオキシ基、アラルキルオキシ基又はアミノ基を示す。]
8週齢雄のCH3マウスの背部の毛を、皮膚表面に傷をつけないよう短く刈った。翌日毛を刈った場所に傷の無いことを確認し、1ケージ2匹に分け、尾にマジックし、個体識別を行い、体重を測定した。(ALA)塩酸塩を5%グルコース溶液に溶解して、経口ゾンデを用いて、ALA塩酸塩50,100,150mg/kgを経口投与した。
投与後遮光し、時間毎に皮膚をVLD−M1(分光器内蔵型紫色半導体レーザー装置、エムアンドエム社)を用いて405nmを照射し、635nmの発光を測定した。その際、組織由来の500nmの白色蛍光(自家蛍光)も測定し、白色蛍光の影響を考慮した。塗布後遮光した状態で四時間経過した後、マウスを尊殺し、塗布部分の毛根の凍結切片を作成し、蛍光顕微鏡で蛍光の有無を確認した。
その結果、蛍光強度(635nm/500nm)は、塗布後210分で最高に達し、その後減衰した(図1)。また、蛍光顕微鏡で、405nmの蛍光をあて毛根付近で赤色光部位を観察し、ALAが代謝されてプロトポルフィリンIXに変換されことを確認した(図2)。
8週齢雄のCH3マウスの背部の毛を、皮膚表面に傷をつけないよう短く刈った。翌日毛を刈った場所に傷の無いことを確認し、1ケージ2匹に分け、尾にマジックし、個体識別を行い、体重を測定した。経口ゾンデを用いて、ALA塩酸塩100mg/kgを経口投与した後、鉄剤(クエン酸第一鉄、ジエチレントリアミン五酢酸鉄アンモニウム(DTPA−Fe)、ピロリン酸第二鉄、硫酸第一鉄)をALAとモル比が1:4となるように続けてゾンデで経口投与した。なお、ALA塩酸塩のみを経口投与したものをコントロールとした。投与後遮光し、時間毎に皮膚をVLD−M1(分光器内蔵型紫色半導体レーザー装置、エムアンドエム社)を用いて405nmを照射し、635nmの発光を測定した。その際、組織由来の500nmの白色蛍光(自家蛍光)も測定し、白色蛍光の影響を考慮した。塗布後遮光した状態で四時間経過した後、マウスを尊殺し、塗布部分の毛根の凍結切片を作成し、蛍光顕微鏡で蛍光の有無を確認した。
その結果、鉄なしのときの時間毎の蛍光強度(635nm/500nm)を100%とした場合、クエン酸第一鉄とDTPA−Feでは、塗布30分以降において80%以上蛍光強度を抑制しているのに対し、ピロリン酸第二鉄と硫酸第一鉄では、80%未満しか抑制していなかった(表1)。また、蛍光顕微鏡で、405nmの蛍光をあてたところ、クエン酸第一鉄とDTPA−Feでは赤色光部位を観察できず、プロトポルフィリンIXに鉄が配位されヘムに変換されことを確認した(図3)。
8週齢雄のCH3マウスの背部の毛を、皮膚表面に傷をつけないよう短く刈った。翌日毛を刈った場所に傷の無いことを確認し、1ケージ2匹に分け、尾にマジックし、個体識別を行い、体重を測定した。ゾンデを用いて、ALA塩酸塩100mg/kgを経口投与した後、クエン酸第一鉄をALAとモル比が1:0.25、1:0.5、1:2、1:4となるように続けてゾンデで経口投与した。投与後遮光し、時間毎に皮膚をVLD−M1(分光器内蔵型紫色半導体レーザー装置、エムアンドエム社)を用いて405nmを照射し、635nmの発光を測定した。その際、組織由来の500nmの白色蛍光(自家蛍光)も測定し、白色蛍光の影響を考慮した。塗布後遮光した状態で四時間経過した後、マウスを尊殺し、塗布部分の毛根の凍結切片を作成し、蛍光顕微鏡で蛍光の有無を確認した。
その結果、クエン酸第一鉄をALAとモル比が1:0.25、1:0.5、1:2、1:4となるよう投与すると120分をピークとしてそれ以降蛍光強度が抑制されていくことを確認した。(図4)。
8週齢オスのCH3マウスの背部の毛を、処方液を塗布できるよう剃毛した。翌日剃毛した場所に傷の無いことを確認し、1ケージ2匹に分け、尾にマジックし、個体識別を行った。ALAリン酸塩0.6%、1.5%、3%、6%を塗布した。塗布後遮光し、時間毎に皮膚をVLD−M1(分光器内蔵型紫色半導体レーザー装置、エムアンドエム社)を用いて405nmを照射し、635nmの発光を測定した。その際、組織由来の500nmの白色蛍光(自家蛍光)も測定し、白色蛍光の影響を考慮した。塗布後遮光した状態で四時間経過した後、マウスを尊殺し、塗布部分の毛根の凍結切片を作成し、蛍光顕微鏡で蛍光の有無を確認した。
その結果、蛍光強度(635nm/500nm)は、塗布後240分まで向上した(図5)。また、蛍光顕微鏡で、405nmの蛍光をあて毛根付近で赤色光部位を観察し、ALAが代謝されてプロトポルフィリンIXに変換されことを確認した(図6)。
8週齢オスのCH3マウスの背部の毛を、処方液を塗布できるよう剃毛した。翌日剃毛した場所に傷の無いことを確認し、1ケージ2匹に分け、尾にマジックし、個体識別を行った。ALA塩酸塩6%とDTPA−FeをALAとモル比が1:0.25、1:0.5、1:2、1:4となる詳報液を作成し塗布した。塗布後遮光し、時間毎に皮膚をVLD−M1(分光器内蔵型紫色半導体レーザー装置、エムアンドエム社)を用いて405nmを照射し、635nmの発光を測定した。その際、組織由来の500nmの白色蛍光(自家蛍光)も測定し、白色蛍光の影響を考慮した。塗布後遮光した状態で四時間経過した後、マウスを尊殺し、塗布部分の毛根の凍結切片を作成し、蛍光顕微鏡で蛍光の有無を確認した。
その結果、DTPA−FeをALAとモル比が1:0.25、1:0.5、1:2、1:4となるよう投与すると180分をピークとしてそれ以降蛍光強度が抑制されていくことを確認した。(図7)。
Claims (3)
- 有機酸の鉄塩を有効成分とする、5−アミノレブリン酸、そのアルキル若しくはアラルキルエステル又はそれらの塩投与時の光障害の軽減剤。
- 有機酸の鉄塩が、有機酸と鉄を含むキレート錯体である請求項1記載の光障害の軽減剤。
- 有機酸の鉄塩及び5−アミノレブリン酸、そのアルキル若しくはアラルキルエステル又はそれらの塩が経口投与されるものである請求項1又は2記載の光障害の軽減剤。
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