JP6788796B2 - 抗血栓性金属材料 - Google Patents
抗血栓性金属材料 Download PDFInfo
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- JP6788796B2 JP6788796B2 JP2016520167A JP2016520167A JP6788796B2 JP 6788796 B2 JP6788796 B2 JP 6788796B2 JP 2016520167 A JP2016520167 A JP 2016520167A JP 2016520167 A JP2016520167 A JP 2016520167A JP 6788796 B2 JP6788796 B2 JP 6788796B2
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- Prior art keywords
- compound
- acid
- metal material
- antithrombotic
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- Prior art date
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- 239000007769 metal material Substances 0.000 title claims description 121
- 230000002785 anti-thrombosis Effects 0.000 title claims description 82
- 239000003146 anticoagulant agent Substances 0.000 title claims description 64
- 239000011248 coating agent Substances 0.000 claims description 128
- 238000000576 coating method Methods 0.000 claims description 128
- 150000001875 compounds Chemical class 0.000 claims description 98
- 229920000642 polymer Polymers 0.000 claims description 96
- 125000004434 sulfur atom Chemical group 0.000 claims description 67
- HTTJABKRGRZYRN-UHFFFAOYSA-N Heparin Chemical compound OC1C(NC(=O)C)C(O)OC(COS(O)(=O)=O)C1OC1C(OS(O)(=O)=O)C(O)C(OC2C(C(OS(O)(=O)=O)C(OC3C(C(O)C(O)C(O3)C(O)=O)OS(O)(=O)=O)C(CO)O2)NS(O)(=O)=O)C(C(O)=O)O1 HTTJABKRGRZYRN-UHFFFAOYSA-N 0.000 claims description 65
- 125000000129 anionic group Chemical group 0.000 claims description 51
- 230000014508 negative regulation of coagulation Effects 0.000 claims description 48
- 229910052717 sulfur Inorganic materials 0.000 claims description 48
- 125000004429 atom Chemical group 0.000 claims description 47
- 229920000669 heparin Polymers 0.000 claims description 46
- 239000000463 material Substances 0.000 claims description 46
- 229960002897 heparin Drugs 0.000 claims description 41
- 125000001453 quaternary ammonium group Chemical group 0.000 claims description 39
- VVJKKWFAADXIJK-UHFFFAOYSA-N Allylamine Chemical compound NCC=C VVJKKWFAADXIJK-UHFFFAOYSA-N 0.000 claims description 26
- 239000000178 monomer Substances 0.000 claims description 24
- YCIMNLLNPGFGHC-UHFFFAOYSA-N o-dihydroxy-benzene Natural products OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 claims description 24
- 239000002628 heparin derivative Substances 0.000 claims description 21
- -1 phosphonic acid compound Chemical class 0.000 claims description 21
- 239000000470 constituent Substances 0.000 claims description 20
- 229910052757 nitrogen Inorganic materials 0.000 claims description 18
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- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 16
- WLJVNTCWHIRURA-UHFFFAOYSA-N pimelic acid Chemical compound OC(=O)CCCCCC(O)=O WLJVNTCWHIRURA-UHFFFAOYSA-N 0.000 claims description 14
- KDXKERNSBIXSRK-UHFFFAOYSA-N Lysine Natural products NCCCCC(N)C(O)=O KDXKERNSBIXSRK-UHFFFAOYSA-N 0.000 claims description 13
- 239000004472 Lysine Substances 0.000 claims description 13
- 102000007327 Protamines Human genes 0.000 claims description 13
- 108010007568 Protamines Proteins 0.000 claims description 13
- UYMKPFRHYYNDTL-UHFFFAOYSA-N ethenamine Chemical compound NC=C UYMKPFRHYYNDTL-UHFFFAOYSA-N 0.000 claims description 13
- ABLZXFCXXLZCGV-UHFFFAOYSA-N phosphonic acid group Chemical group P(O)(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 claims description 13
- 229940048914 protamine Drugs 0.000 claims description 13
- KDXKERNSBIXSRK-YFKPBYRVSA-N L-lysine Chemical compound NCCCC[C@H](N)C(O)=O KDXKERNSBIXSRK-YFKPBYRVSA-N 0.000 claims description 12
- NJSSICCENMLTKO-HRCBOCMUSA-N [(1r,2s,4r,5r)-3-hydroxy-4-(4-methylphenyl)sulfonyloxy-6,8-dioxabicyclo[3.2.1]octan-2-yl] 4-methylbenzenesulfonate Chemical compound C1=CC(C)=CC=C1S(=O)(=O)O[C@H]1C(O)[C@@H](OS(=O)(=O)C=2C=CC(C)=CC=2)[C@@H]2OC[C@H]1O2 NJSSICCENMLTKO-HRCBOCMUSA-N 0.000 claims description 12
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 12
- 229920006318 anionic polymer Polymers 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 10
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- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 9
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 8
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims description 8
- 125000004432 carbon atom Chemical group C* 0.000 claims description 8
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 claims description 8
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- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 claims description 8
- 125000000217 alkyl group Chemical group 0.000 claims description 7
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
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- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 claims description 6
- 150000001449 anionic compounds Chemical class 0.000 claims description 6
- 239000001630 malic acid Substances 0.000 claims description 6
- 235000011090 malic acid Nutrition 0.000 claims description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
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- 239000004220 glutamic acid Substances 0.000 claims description 5
- RTBFRGCFXZNCOE-UHFFFAOYSA-N 1-methylsulfonylpiperidin-4-one Chemical compound CS(=O)(=O)N1CCC(=O)CC1 RTBFRGCFXZNCOE-UHFFFAOYSA-N 0.000 claims description 4
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 4
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 4
- 239000001361 adipic acid Substances 0.000 claims description 4
- 235000011037 adipic acid Nutrition 0.000 claims description 4
- JFCQEDHGNNZCLN-UHFFFAOYSA-N anhydrous glutaric acid Natural products OC(=O)CCCC(O)=O JFCQEDHGNNZCLN-UHFFFAOYSA-N 0.000 claims description 4
- 235000015165 citric acid Nutrition 0.000 claims description 4
- 239000011975 tartaric acid Substances 0.000 claims description 4
- 235000002906 tartaric acid Nutrition 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- CKLJMWTZIZZHCS-REOHCLBHSA-N L-aspartic acid Chemical compound OC(=O)[C@@H](N)CC(O)=O CKLJMWTZIZZHCS-REOHCLBHSA-N 0.000 claims description 3
- WHUUTDBJXJRKMK-VKHMYHEASA-N L-glutamic acid Chemical compound OC(=O)[C@@H](N)CCC(O)=O WHUUTDBJXJRKMK-VKHMYHEASA-N 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 235000003704 aspartic acid Nutrition 0.000 claims description 3
- OQFSQFPPLPISGP-UHFFFAOYSA-N beta-carboxyaspartic acid Natural products OC(=O)C(N)C(C(O)=O)C(O)=O OQFSQFPPLPISGP-UHFFFAOYSA-N 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 150000004679 hydroxides Chemical class 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
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- 229910052697 platinum Inorganic materials 0.000 claims description 3
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- 239000004332 silver Substances 0.000 claims description 3
- 239000001384 succinic acid Substances 0.000 claims description 3
- 239000011135 tin Substances 0.000 claims description 3
- 229910052718 tin Inorganic materials 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
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- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
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- 239000010937 tungsten Substances 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
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- 230000002949 hemolytic effect Effects 0.000 description 54
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Description
(1) ホスホン酸化合物又はカテコール化合物と、アルキレンイミン、ビニルアミン、アリルアミン、リジン、プロタミン及びジアリルジメチルアンモニウムクロライドからなる群から選択される化合物を構成モノマーとして含むポリマーと、硫黄原子を含むアニオン性の抗凝固活性を有する化合物と、を含む被覆材料によって金属材料の表面が被覆され、上記硫黄原子を含むアニオン性の抗凝固活性を有する化合物は、上記ポリマーとイオン結合され、上記ポリマーは、上記ホスホン酸化合物又は上記カテコール化合物と共有結合され、上記ホスホン酸化合物又は上記カテコール化合物は、自身のホスホン酸基又はカテコール基を介して上記金属材料に結合され、前記ホスホン酸化合物は、下記一般式(I)又は下記一般式(II)で表される化合物であり、
前記カテコール化合物は、下記一般式(IV)〜下記一般式(VII)から選ばれる少なくとも1つの化合物であり、
(2) 上記ポリマーは、第4級アンモニウム基を有する、(1)記載の抗血栓性金属材料。
(3) 上記第4級アンモニウム基は、窒素原子に結合する炭素鎖がアルキル基で構成され、該アルキル基1つ当たりの炭素数が1〜12個である、(2)記載の抗血栓性金属材料。
(4) 上記被覆材料は、アクリル酸、メタクリル酸、α−グルタミン酸、γ−グルタミン酸及びアスパラギン酸からなる群から選択される化合物を構成モノマーとして含むアニオン性ポリマー、又は、シュウ酸、マロン酸、コハク酸、フマル酸、グルタル酸、アジピン酸、ピメリン酸、スベリン酸、アゼライン酸、セバシン酸、リンゴ酸、酒石酸及びクエン酸からなる群から選択されるアニオン性化合物を含む、(1)〜(3)のいずれか記載の抗血栓性金属材料。
(5) 上記硫黄原子を含むアニオン性の抗凝固活性を有する化合物は、ヘパリン又はヘパリン誘導体である、(1)〜(4)のいずれか記載の抗血栓性金属材料。
(6) 上記ポリマーの重量平均分子量は、600〜2000000である、(1)〜(5)のいずれか記載の抗血栓性金属材料。
(7) 上記金属材料は、鉄、チタン、アルミニウム、スズ、金、銀、銅、白金、クロム、コバルト、ニッケル、亜鉛、タングステン及びこれらの合金並びにこれらの金属の酸化物及び水酸化物からなる群から選択される、(1)〜(6)のいずれか記載の抗血栓性金属材料。
(8) (1)〜(7)のいずれか記載の抗血栓性金属材料から製造された、体内留置用の医療器材。
[測定条件]
装置 :TOF.SIMS5(ION−TOF社製)
1次イオン種 :Bi3 ++
2次イオン極性 :正又は負
エッチングイオン :Arガスクラスターイオン(Ar−GCIB)
質量範囲(m/z) :0〜1500
ラスターサイズ :300μm四方
ピクセル数(1辺) :128ピクセル
後段加速 :10kV
測定真空度(試料導入前) :4×10−7Pa以下
1次イオン加速電圧 :30kV
パルス幅 :5.1ns
バンチング :あり(高質量分解能測定)
帯電中和 :なし
[測定条件]
装置 :ESCALAB220iXL(VG Scientific社製)
励起X線 :monochromaticAlKα1,2線(1486.6eV)
X線径 :1mm
X電子脱出角度 :90°(抗血栓性金属材料の表面に対する検出器の傾き)
分割ratio : 各分割ピーク成分の存在比率(%)
N1sratio : 全原子の存在量に対する窒素原子の存在比率(%)
分割percent : N1sピークにおける各分割ピーク成分の割合(%)
分割ratio : 各分割ピーク成分の存在比率(%)
C1sratio : 全原子の存在量に対する炭素原子の存在比率(%)
分割percent : C1sピークにおける各分割ピーク成分の割合(%)
At : 検体の吸光度
An : 陰性対照の吸光度
Ap : 陽性対照の吸光度
金属材料としてSUS304の板材(縦:1cm、横0.5cm)を用いた。SUS304を水、アセトン、メタノールの順で超音波洗浄後、真空乾燥した。洗浄したSUS304を1mMの化合物A(以下の一般式(I))エタノール溶液に37℃で一晩浸漬してから、エタノールと水で洗浄後、真空乾燥して、SUS304の表面に化合物Aを共有結合させた(第1の被覆工程)。
化合物Aを化合物B(以下の一般式(II))に変更した以外は、実施例1と同様の操作を行い、第1の被覆工程及び第2の被覆工程を実施した。また、実施例1と同様の操作を行い、臭化エチルを用いて第4級アンモニウム化工程を実施した後、第3の被覆工程を実施した。
実施例1と同様の操作を行い、第1の被覆工程と第2の被覆工程を実施した後、SUS304を0.5重量%DMT−MM、0.5重量%PAA(和光純薬工業株式会社製)の水溶液に浸漬し、30℃で2時間反応させた(第1の追加工程)。反応後の水溶液を除去し、炭酸ナトリウム水溶液や蒸留水で洗浄した。
SUS304を水、アセトン、メタノールの順で超音波洗浄後、真空乾燥した。洗浄したSUS304に第3の被覆工程を実施し、ヘパリンをSUS304の表面にイオン結合させたSUS304をサンプル9とした。
実施例1と同様の操作を行い、第1の被覆工程、第2の被覆工程、第4級アンモニウム化工程を実施した後、第3の被覆工程を実施した。
実施例1と同様の操作を行い、第1の被覆工程及び第2の被覆工程を実施した後、SUS304を0.5重量%DMT−MM、0.5重量%PAA(和光純薬工業株式会社製)の水溶液に浸漬し、30℃で2時間反応させた(第1の追加工程)。反応後の水溶液を除去し、炭酸ナトリウム水溶液や蒸留水で洗浄した。
特許第5576441号公報に開示された方法を用いて、ヘパリンを固定化したSUS304をサンプル14とした。
第1の被覆工程において、化合物Aを化合物C(以下一般式IV)、化合物D(以下の一般式(V)、化合物E(以下の一般式(VI)、化合物F(以下の一般式(VII))のいずれかに変更して、洗浄したSUS304をそれぞれ1mMの化合物C、化合物D、化合物E又は化合物Fのトリス塩酸緩衝液(pH8.5)溶液に37℃で一晩浸漬してから、水で洗浄後、真空乾燥した(第1の被覆工程)。第1の被覆工程以外は、実施例1と同様の操作を行い、第2の被覆工程を実施した。また、臭化エチル又は臭化ペンチルを用いて第4級アンモニウム化工程を実施した後、第3の被覆工程を実施した。
第1の被覆工程において、化合物A又は化合物Bを、化合物C又は化合物Eのいずれかに変更して、洗浄したSUS304をそれぞれ1mMの化合物C又は化合物Eのトリス塩酸緩衝液(pH8.5)溶液に37℃で一晩浸漬してから、水で洗浄後、真空乾燥した(第1の被覆工程)。第1の被覆工程以外は、実施例3と同様の操作を行い、第2の被覆工程、第1の追加工程、第2の追加工程を実施した。また、臭化エチルを用いて第4級アンモニウム化工程を実施した後、第3の被覆工程を実施した。
第1の被覆工程において、化合物A又は化合物Bを、化合物C又は化合物Eのいずれかに変更して、洗浄したSUS304をそれぞれ1mMの化合物C又は化合物Eのトリス塩酸緩衝液(pH8.5)溶液に37℃で一晩浸漬してから、水で洗浄後、真空乾燥した(第1の被覆工程)。第1の被覆工程以外は、比較例2と同様の操作を行い、第2の被覆工程、第4級アンモニウム化工程、第3の被覆工程を実施した。
第1の被覆工程において、化合物Aを、化合物C又は化合物Eに変更して、洗浄したSUS304をそれぞれ1mMの化合物C又は化合物Eのトリス塩酸緩衝液(pH8.5)溶液に37℃で一晩浸漬してから、水で洗浄後、真空乾燥した(第1の被覆工程)。第1の被覆工程以外は、比較例3と同様の操作を行い、第2の被覆工程、第1の追加工程、第2の追加工程、第3の追加工程、第4の追加工程、第4級アンモニウム化工程、第3の被覆工程を実施した。
抗血栓性金属材料の各サンプルを0.5×0.5cmのサイズにカットし、生理食塩水を用いて37℃で30分間洗浄した。洗浄後のサンプルを“テストチーム(登録商標) ヘパリンS”(積水メディカル株式会社製)の操作手順に従って反応させ、405nmの吸光度をマイクロプレートリーダ(MTP−300;コロナ電気株式会社製)で測定した。“テストチーム(登録商標) ヘパリンS”(積水メディカル株式会社製)の操作手順に従って検量線を作成して抗ファクターXa活性による表面量を算出した。表面量は高い程よく、15mIU/cm2以上であることが好ましく、30mIU/cm2以上であることがより好ましく、100mIU/cm2以上であることがさらにより好ましい。表面量が15mIU/cm2未満であれば、表面量が少ないとして(−)、15mIU/cm2以上であれば表面量が多いとして(+)、30mIU/cm2以上であれば表面量がさらに多いとして(++)、100mIU/cm2以上であれば表面量がさらにより多いとして(+++)と判定した。
抗血栓性金属材料の各サンプルを1.0×0.5cmのサイズにカットし、被覆材料で被覆されていない同種の金属材料(陽性対照)を1.0×0.5cmのサイズにカットし、生理食塩水で37℃、30分間洗浄してから2mLのマイクロチューブに入れた。ヒト新鮮血に0.4U/mLとなるようにヘパリンナトリウム注(味の素製薬株式会社製)を添加した後、このヒト血液を2mL添加し、37℃で2時間インキュベートした。インキュベート後にSUS304を取り出し、血液中のトロンビン−アンチトロンビン複合体(以下TAT)の濃度を測定した。以下の式4に示すように、血栓形成抑制能を算出した。
血栓形成抑制能 = Ct/Cpre ・・・式4
Ct : サンプルをインキュベートした後の測定濃度(ng/mL)
Cpre : サンプルをインキュベートする前の測定濃度(ng/mL)
ヒト新鮮血をガラスビーズ入り三角フラスコの壁面を伝うように入れた。手のひらの上で、水平に円を描くように、およそ1秒間に2回の間隔で約5分間振とうし、脱線維血を調製した。抗血栓性金属材料の各サンプルを1.0×0.5cmのサイズにカットし、生理食塩水で37℃、30分間洗浄してから2mLのマイクロチューブに入れた。金属材料が入ったマイクロチューブに生理食塩水で50倍希釈した脱線維血を1mL添加し、37℃で4時間インキュベートした。インキュベート後、750Gで5分間遠心分離した。上清を採取し、576nmでのUV吸収を測定した。式3より算出した値が2より大きい値、すなわち溶血性有りであれば(+)、2以下の値、すなわち非溶血性であれば(−)と判定した。溶血毒性は無い方がよく、非溶血性であることが好ましい。
細胞接着性とは、材料に対する細胞の接着のしやすさを示す性質であり、以下の評価法で測定される。抗血栓性金属材料の各サンプルを1.0×0.5cmのサイズにカットし、細胞培養用の24ウェル・マイクロプレート(住友ベークライト社製)のウェルに内壁面を上にして1枚入れ、上から肉厚1mmの金属パイプ状の錘を乗せた。2%FBS内皮細胞培地キット−2(タカラバイオ社製)に懸濁した正常ヒト臍帯静脈内皮細胞(タカラバイオ社)を1ウェル当たり4×104個になるように添加した。1mLの培地中で37℃、5%CO2の環境下で24時間培養した。その後、PBS(−)(ニッスイ社製)でリンスした後に、Cell Counting Kit−8(同仁化学社製)を100μL添加し、37℃、5%CO2の環境下で4時間培養した。その後、450nmの吸光度をマイクロプレートリーダ(MTP−300;コロナ電気株式会社製)で測定して、以下の式5に示すように、吸光度を算出した。
As = At−Ab ・・・式5
At : 測定値の吸光度
Ab : ブランク溶液の吸光度(培地及びCell Counting Kit−8の溶液のみで細胞なし。)
As : 算出された吸光度
細胞接着性(%) = As(sample)X 100/As(control) ・・・式6
As(sample) : サンプルをインキュベートした後に算出された吸光度
As(control) : 被覆材料で被覆されていない同種の金属材料(陽性対照)をインキュベートした後に算出された吸光度
Claims (8)
- ホスホン酸化合物又はカテコール化合物と、アルキレンイミン、ビニルアミン、アリルアミン、リジン、プロタミン及びジアリルジメチルアンモニウムクロライドからなる群から選択される化合物を構成モノマーとして含むポリマーと、硫黄原子を含むアニオン性の抗凝固活性を有する化合物と、を含む被覆材料によって金属材料の表面が被覆され、
前記硫黄原子を含むアニオン性の抗凝固活性を有する化合物は、前記ポリマーとイオン結合され、
前記ポリマーは、前記ホスホン酸化合物又は前記カテコール化合物と共有結合され、
前記ホスホン酸化合物又は前記カテコール化合物は、自身のホスホン酸基又はカテコール基を介して前記金属材料に結合され、
前記ホスホン酸化合物は、下記一般式(I)又は下記一般式(II)で表される化合物であり、
前記カテコール化合物は、下記一般式(IV)〜下記一般式(VII)から選ばれる少なくとも1つの化合物であり、
表面におけるX線電子分光法(XPS)で測定した全原子の存在量に対する硫黄原子の存在量の比率が3.0〜6.0原子数%である、抗血栓性金属材料。 - 前記ポリマーは、第4級アンモニウム基を有する、請求項1記載の抗血栓性金属材料。
- 前記第4級アンモニウム基は、窒素原子に結合する炭素鎖がアルキル基で構成され、該アルキル基1つ当たりの炭素数が1〜12個である、請求項2記載の抗血栓性金属材料。
- 前記被覆材料は、アクリル酸、メタクリル酸、α−グルタミン酸、γ−グルタミン酸及びアスパラギン酸からなる群から選択される化合物を構成モノマーとして含むアニオン性ポリマー、又は、シュウ酸、マロン酸、コハク酸、フマル酸、グルタル酸、アジピン酸、ピメリン酸、スベリン酸、アゼライン酸、セバシン酸、リンゴ酸、酒石酸及びクエン酸からなる群から選択されるアニオン性化合物を含む、請求項1〜3のいずれか一項記載の抗血栓性金属材料。
- 前記硫黄原子を含むアニオン性の抗凝固活性を有する化合物は、ヘパリン又はヘパリン誘導体である、請求項1〜4のいずれか一項記載の抗血栓性金属材料。
- 前記ポリマーの重量平均分子量は、600〜2000000である、請求項1〜5のいずれか一項記載の抗血栓性金属材料。
- 前記金属材料は、鉄、チタン、アルミニウム、スズ、金、銀、銅、白金、クロム、コバルト、ニッケル、亜鉛、タングステン及びこれらの合金並びにこれらの金属の酸化物及び水酸化物からなる群から選択される、請求項1〜6のいずれか一項記載の抗血栓性金属材料。
- 請求項1〜7のいずれか一項記載の抗血栓性金属材料から製造された、体内留置用の医療器材。
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CN107405431A (zh) | 2017-11-28 |
WO2016159243A1 (ja) | 2016-10-06 |
EP3278819A1 (en) | 2018-02-07 |
EP3278819A4 (en) | 2019-01-02 |
BR112017017572B1 (pt) | 2021-10-05 |
JPWO2016159243A1 (ja) | 2018-01-18 |
CA2979779C (en) | 2023-06-20 |
CA2979779A1 (en) | 2016-10-06 |
RU2017134610A3 (ja) | 2019-08-14 |
CN107405431B (zh) | 2021-02-02 |
US20180344906A1 (en) | 2018-12-06 |
RU2711652C2 (ru) | 2020-01-17 |
EP3278819B1 (en) | 2020-07-15 |
BR112017017572A2 (ja) | 2018-05-08 |
US10709822B2 (en) | 2020-07-14 |
RU2017134610A (ru) | 2019-04-04 |
KR20170133321A (ko) | 2017-12-05 |
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