JP2005320336A - 過酢酸滅菌法 - Google Patents
過酢酸滅菌法 Download PDFInfo
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- JP2005320336A JP2005320336A JP2005143247A JP2005143247A JP2005320336A JP 2005320336 A JP2005320336 A JP 2005320336A JP 2005143247 A JP2005143247 A JP 2005143247A JP 2005143247 A JP2005143247 A JP 2005143247A JP 2005320336 A JP2005320336 A JP 2005320336A
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- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 title claims abstract description 176
- 230000001954 sterilising effect Effects 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000004659 sterilization and disinfection Methods 0.000 title abstract description 30
- 102000008186 Collagen Human genes 0.000 claims abstract description 71
- 108010035532 Collagen Proteins 0.000 claims abstract description 71
- 229920001436 collagen Polymers 0.000 claims abstract description 71
- 230000008961 swelling Effects 0.000 claims abstract description 11
- 238000004090 dissolution Methods 0.000 claims abstract description 7
- 238000007634 remodeling Methods 0.000 claims description 5
- 239000003206 sterilizing agent Substances 0.000 claims description 5
- 238000006386 neutralization reaction Methods 0.000 claims 4
- 230000007935 neutral effect Effects 0.000 abstract description 8
- 230000004071 biological effect Effects 0.000 abstract description 4
- 230000000704 physical effect Effects 0.000 abstract description 4
- 238000002513 implantation Methods 0.000 abstract description 2
- 230000008439 repair process Effects 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 70
- 210000001519 tissue Anatomy 0.000 description 37
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 29
- 239000000463 material Substances 0.000 description 24
- LOKCTEFSRHRXRJ-UHFFFAOYSA-I dipotassium trisodium dihydrogen phosphate hydrogen phosphate dichloride Chemical compound P(=O)(O)(O)[O-].[K+].P(=O)(O)([O-])[O-].[Na+].[Na+].[Cl-].[K+].[Cl-].[Na+] LOKCTEFSRHRXRJ-UHFFFAOYSA-I 0.000 description 16
- 239000002953 phosphate buffered saline Substances 0.000 description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- 239000011780 sodium chloride Substances 0.000 description 15
- 230000000968 intestinal effect Effects 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 150000003839 salts Chemical class 0.000 description 9
- SCVJRXQHFJXZFZ-KVQBGUIXSA-N 2-amino-9-[(2r,4s,5r)-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]-3h-purine-6-thione Chemical compound C1=2NC(N)=NC(=S)C=2N=CN1[C@H]1C[C@H](O)[C@@H](CO)O1 SCVJRXQHFJXZFZ-KVQBGUIXSA-N 0.000 description 7
- 238000011534 incubation Methods 0.000 description 7
- 244000063299 Bacillus subtilis Species 0.000 description 5
- 235000014469 Bacillus subtilis Nutrition 0.000 description 5
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Natural products CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 239000002202 Polyethylene glycol Substances 0.000 description 4
- 229940127554 medical product Drugs 0.000 description 4
- 210000000056 organ Anatomy 0.000 description 4
- 229920001223 polyethylene glycol Polymers 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 210000000813 small intestine Anatomy 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 229940061607 dibasic sodium phosphate Drugs 0.000 description 3
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 102000013373 fibrillar collagen Human genes 0.000 description 3
- 108060002894 fibrillar collagen Proteins 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229940111688 monobasic potassium phosphate Drugs 0.000 description 3
- 235000019796 monopotassium phosphate Nutrition 0.000 description 3
- GNSKLFRGEWLPPA-UHFFFAOYSA-M potassium dihydrogen phosphate Chemical compound [K+].OP(O)([O-])=O GNSKLFRGEWLPPA-UHFFFAOYSA-M 0.000 description 3
- 210000004876 tela submucosa Anatomy 0.000 description 3
- 235000010469 Glycine max Nutrition 0.000 description 2
- 229920002274 Nalgene Polymers 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- 102000004142 Trypsin Human genes 0.000 description 2
- 108090000631 Trypsin Proteins 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 239000012620 biological material Substances 0.000 description 2
- 239000003519 biomedical and dental material Substances 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 210000004207 dermis Anatomy 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000005865 ionizing radiation Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 210000004872 soft tissue Anatomy 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 238000002054 transplantation Methods 0.000 description 2
- 239000012588 trypsin Substances 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 208000035143 Bacterial infection Diseases 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 description 1
- 244000068988 Glycine max Species 0.000 description 1
- 241000588747 Klebsiella pneumoniae Species 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 208000022362 bacterial infectious disease Diseases 0.000 description 1
- VEZXCJBBBCKRPI-UHFFFAOYSA-N beta-propiolactone Chemical compound O=C1CCO1 VEZXCJBBBCKRPI-UHFFFAOYSA-N 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000008366 buffered solution Substances 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000512 collagen gel Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000004821 effect on bone Effects 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000002496 gastric effect Effects 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 210000003709 heart valve Anatomy 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 210000000936 intestine Anatomy 0.000 description 1
- 230000002906 microbiologic effect Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229940045641 monobasic sodium phosphate Drugs 0.000 description 1
- 229910000403 monosodium phosphate Inorganic materials 0.000 description 1
- 235000019799 monosodium phosphate Nutrition 0.000 description 1
- 210000004400 mucous membrane Anatomy 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 230000002138 osteoinductive effect Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 230000001575 pathological effect Effects 0.000 description 1
- 230000002572 peristaltic effect Effects 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 238000011533 pre-incubation Methods 0.000 description 1
- 239000003761 preservation solution Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229960000380 propiolactone Drugs 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000009256 replacement therapy Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000008237 rinsing water Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 210000002460 smooth muscle Anatomy 0.000 description 1
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 235000011008 sodium phosphates Nutrition 0.000 description 1
- KEAYESYHFKHZAL-OUBTZVSYSA-N sodium-24 Chemical compound [24Na] KEAYESYHFKHZAL-OUBTZVSYSA-N 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000003330 sporicidal effect Effects 0.000 description 1
- 239000008174 sterile solution Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229940071127 thioglycolate Drugs 0.000 description 1
- 239000007143 thioglycolate medium Substances 0.000 description 1
- CWERGRDVMFNCDR-UHFFFAOYSA-M thioglycolate(1-) Chemical compound [O-]C(=O)CS CWERGRDVMFNCDR-UHFFFAOYSA-M 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/0005—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor for pharmaceuticals, biologicals or living parts
- A61L2/0082—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor for pharmaceuticals, biologicals or living parts using chemical substances
- A61L2/0088—Liquid substances
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N1/00—Preservation of bodies of humans or animals, or parts thereof
- A01N1/02—Preservation of living parts
- A01N1/0205—Chemical aspects
- A01N1/021—Preservation or perfusion media, liquids, solids or gases used in the preservation of cells, tissue, organs or bodily fluids
- A01N1/0215—Disinfecting agents, e.g. antimicrobials for preserving living parts
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/16—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group; Thio analogues thereof
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental Sciences (AREA)
- Zoology (AREA)
- Chemical & Material Sciences (AREA)
- Wood Science & Technology (AREA)
- Dentistry (AREA)
- Medicinal Chemistry (AREA)
- Epidemiology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Animal Behavior & Ethology (AREA)
- Molecular Biology (AREA)
- Biomedical Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials For Medical Uses (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Peptides Or Proteins (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
Abstract
【解決手段】 本発明は、移植、再建、または哺乳動物宿主に使用されるコラーゲンおよびコラーゲン様組織の滅菌法に関する。滅菌剤は、低濃度の過酢酸を中性溶液あるいは高イオン強度溶液のいずれか一方のかたちで用いる。これによって、コラーゲン組織が膨潤あるいは溶解するのを極力止めて滅菌することが可能となるので、コラーゲンの構造安定特性および生物学的リモデリング特性が保持される。
【選択図】 なし
Description
滅菌剤、すなわち中性過酢酸溶液の調製法を以下の実施例に記載する。
4℃のリン酸緩衝生理食塩水(PBS)
過酢酸(35%濃度)
10N水酸化ナトリウム(NaOH)
パスツール・ピペットおよびバルブ
1,500mlの滅菌済みナルゲン(Nalgene)・ボトル
pHメータ
リン酸緩衝生理食塩水(PBS)溶液は、0.144グラムの1塩基リン酸カリウム;3.00グラムの2塩基リン酸ナトリウム(7H2O);
9.00グラムの塩化ナトリウム;および1リットルの純水から調製した。
1.349mlのPBSを500ml滅菌ナルゲン・ボトルに加えた。
2.1.4mlの過酢酸をPBSに加えた。
3.過酢酸溶液が入った上記ボトルにキャップを付けてやさしく振った。
4.攪拌子をボトルに入れ、このボトルを撹拌プレート上に置いた。
5.pHメータを用いて過酢酸溶液のpHを測定した。読み取られた値は、pH4.0〜5.0の範囲内であった。
6.パスツール・ピペットを用いて10NのNaOHをpHが7.0〜7.2になるまで上記溶液に滴下することによって、溶液の中和を行った。加えたNaOHの総量は約0.4〜0.8mlであった。pH反応が遅いので、
NaOH溶液の滴下をゆっくり行った。
7.500mlと読み取れるところまで、PBSによって溶液の増量を行うことによって最終過酢酸濃度を0.1%にした。
以下の実施例で、滅菌剤:希釈、高塩濃度、過酢酸溶液の調製について述べる。
過酢酸(35%濃度)
塩化ナトリウム(NaCl)
1,500mlの滅菌済みナルゲン・ボトル
1.29.22グラムのNaClを水に溶解して500mlの容量にした。
2.1.4mlの35%過酢酸を加えて0.1%溶液にした。
ブタの腸から採取したコラーゲン材料からなる1フット(1′)切片を3枚
実施例1および実施例2にもとづいて調製し、かつ新鮮な滅菌過酢酸溶液
滅菌リン酸緩衝生理食塩水(PBS)
1.ブタの小腸を回収し、シート状に切り落とした場合は機械的にはぎ取り、かつ洗浄し、粘膜下層(tunica submucosa)を離層して分離した。対向するローラで原料を機械的に挟んで両側から強く押しつけることによって、小腸からこの粘膜下組織を分離した。小腸の粘膜下層は回りの組織よりも硬く、かつ張っており、ローラーによって圧搾することによって粘膜組織から柔らかい部分が搾り出される。
2.洗浄したブタの腸コラーゲン材料からなる1フット試料3枚を、100mlの中和された0.1%過酢酸溶液に16、40、または62時間にわたって浸した(3つの試料それぞれについて、各時間ポイントをとった)。この溶液は、実施例1にもとづいて調製した。
3.中和された0.1%過酢酸溶液で所定の時間インキュベーションした後、腸コラーゲン材料からなる各1フット試料から1インチの試料を取った。このようにして採取された試料を、滅菌トリプシン大豆ブイヨン(TBS)またはチオグリコレート培地(Thio)のいずれか一方に無菌的に移し、それぞれ37℃または30℃で40日間にわたるインキュベーションを行った。また、1インチ試料を未処理のコラーゲン材料から採取し、対称群として同様にTBSまたはThioで40日間にわたるインキュベーションを行った。
実験した過酢酸処理移植片試料のすべてが、16、40、または60時間のインキューベーションにかかわらず、TSBまたはThioのいずれか一方で40日間放置後、滅菌された。未処理の対称群から得た切片は、TSBまたはThioのいずれか一方に放置後14日目から、どれもが肺炎杆菌(Klebsiella pneumoniae)および大腸菌(Eschericia coli)による汚染が認められた。
ブタ腸コラーゲン材料
枯草菌(Bacillus subtilis)胞子
実施例1に記載した中和過酢酸溶液
液体チオグリコレート・ブイヨン(Thio)
トリプシン大豆ブイヨン(TSB)
1.実施例3に記載したように、腸コラーゲン材料からなる試料に対して、該材料の1フット長あたり2億個の枯草菌胞子を接種した。
2.接種された材料の1フット試料を150mlの中和0.1%過酢酸溶液に浸し、8時間または16時間(6つの試料それぞれについて、各時間ポイントをとった)。
3.中和過酢酸処理小腸コラーゲン材料および対称群(枯草菌を接種、しかし過酢酸処理せず)の1インチ試料をそれぞれ別々にTSBまたはThioに移し、14日間にわたってインクベーションを行った(それぞれのインキュベーション温度は37℃または30℃)。
腸コラーゲン材料からなる過酢酸処理された試料のすべてが滅菌された。枯草菌胞子が打ちつけられた対称群試料は、TSBによるインキュベーション後1日目およびThioによるインキュベーション後3日目で枯草菌の成長が認められた。
ブタの腸コラーゲン材料
0.1%過酢酸溶液含有水(pH3.5)
0.1%過酢酸溶液含有リン酸緩衝生理食塩水(pH6.1)
0.1%過酢酸溶液含有リン酸緩衝生理食塩水、実施例1の記載したようにしてpH7.2に中和
実施例2に記載されたものと同様の0.1%過酢酸溶液含有1M塩化ナトリウム(pH3.3)
腸コラーゲン材料の切片(約3インチの長さ)を実施例3の記載にもとづいて調製し、吸い取り乾燥し、計量して50mlの上記希過酢酸溶液のいずれか1つに入れた(実験は三重におこなった)。室温で19時間インキュベーションした後、試料を新鮮な溶液に移し、さらに28時間放置した。その後、試料を取り出し、表面の液体を軽く吸い取り、再度計量した。
米国特許出願一連番号第07/772,529号(米国特許第5,378,469号明細書)(特許文献1)に記載された方法にもとづいて得られた密な線維状コラーゲン(DFC)シート
0.1%過酢酸溶液含有水(pH3.5)
0.1%過酢酸溶液含有リン酸緩衝生理食塩水(pH6.1)
0.1%過酢酸溶液含有リン酸緩衝生理食塩水、実施例1の記載したようにしてpH7.2に中和
実施例2に記載されたものと同様の0.1%過酢酸溶液含有1M塩化ナトリウム(pH3.3)
乾燥させたDFCシート(六ヶ月以上乾燥保存)の切片を計量し、50mlの上記希過酢酸溶液のいずれか1つに入れた(実験は三重におこなった)。室温で19時間インキュベーションした後、試料を取り出し、表面の液体を軽く吸い取り、再度計量した。
糸製造:
密な線維状コラーゲン(DF)糸の製造は米国特許出願一連番号第07/772,529号(米国特許第5,378,469号明細書)(特許文献1)に記載さている。この文献をここでは援用する。この実験で用いられたように、5.8mg/mlコラーゲン溶液含有8.8mM酢酸が入った140mlシリンジをシリンジ・ポンプ(Harvard Apparatus, South Natick, MA)に充填し、250ml/分で注入するように設定した。シリコン・チューブ(内径1/8インチ)を介して18ゲージの鈍ステンレス製針にシリンジを接続した。この針は、20%ポリエチレングリコール(PEG)、MW8,000(Spectrum Chemicals, New Brunswick, NJ)を含む5リットルの94mM2塩基リン酸ナトリウム/24mM1塩基リン酸ナトリウム溶液(pH7.55)が入った長さが18フット、径が2インチのPVC溝の一端に浸されている。PEG溶液を蠕動ポンプを用いて循環させ、針先端部での流体速度が約4cm/秒となるようにした。コラーゲンは中和pH溶液に接することによってゲル化し、コラーゲンとPEG溶液との間に形成された浸透圧勾配によって発生しようとする糸の脱水が始まる。凝集溝は浴槽中の糸の残留時間が約4分となるように構成された。糸が蓄積されると、pH7.10で5.5mM2塩基リン酸ナトリウム、0.5mM1塩基リン酸カリウム、および75mMNaClによって満たされた6フット長の溝に移し、5ないし10分間放置した。
縮み温度、コラーゲン三重らせんの安定性の値を、pH7.30で1.0mM1塩基リン酸カリウム、11mM2塩基リン酸ナトリウム、および150mMNaClに2.5g荷重の5ないし7cmループの糸を浸し、縮みが起こるまで分あたり1℃で加熱した。少なくとも10%まで試料を縮ませる温度を縮み温度として記録した。
コラーゲン糸を以下の溶液に20分間さらした。
2) 0.1%過酢酸溶液含有リン酸緩衝生理食塩水(pH6.1);
3) 0.1%過酢酸溶液含有リン酸緩衝生理食塩水、実施例1の記載したようにしてpH7.2に中和;
4) 実施例2に記載されたような0.1%過酢酸溶液含有1M塩化ナトリウム(pH3.3)。
Claims (12)
- コラーゲンまたはコラーゲン様組織を滅菌するための方法であって、膨潤および溶解を起こさないで、またはそれらの量を最小限にしつつ前記コラーゲンまたはコラーゲン様組織を滅菌する低濃度の過酢酸溶液に、前記コラーゲンまたはコラーゲン様組織を接触させる工程を含み、前記低濃度の過酢酸溶液が5%未満の過酢酸濃度を有し、且つ、6.0から8.0の中和pHを有することを特徴とする方法。
- 前記中和pHの値は、7.0から7.5であることを特徴とする請求項1の方法。
- 前記過酢酸の濃度は、0.02%から5%までの範囲内であることを特徴とする請求項1または2に記載の方法。
- 前記過酢酸の濃度は、0.02%から1.0%までの範囲内であることを特徴とする請求項3に記載の方法。
- コラーゲンまたはコラーゲン様組織の膨潤を防止するかまたは最小限にする低濃度の過酢酸溶液を含む、組織工学に用いられるコラーゲンまたはコラーゲン様組織のための滅菌剤であり、前記低濃度の過酢酸溶液は、5%未満の過酢酸濃度を有し、且つ、6.0から8.0の中和pHを有することを特徴とする滅菌剤。
- 中和pH溶液に5%未満の低濃度の過酢酸溶液を含み、前記中和pHは6.0から8.0までの範囲である組織工学に用いられるコラーゲンまたはコラーゲン様組織のための滅菌剤。
- 前記過酢酸の濃度は、0.02%から5%までの範囲内であることを特徴とする請求項5または6に記載の滅菌剤。
- 前記過酢酸の濃度は、0.02%から1.0%までの範囲内であることを特徴とする請求項5または6に記載の滅菌剤。
- 膨潤および溶解を起こさないで、またはそれらを最小限にしつつコラーゲンまたはコラーゲン様組織を滅菌する低濃度の過酢酸溶液に、前記コラーゲンまたはコラーゲン様組織を接触させる工程を含み、前記溶液は過酢酸濃度が0.02%から1.0%の範囲で、且つ中和pHが6.0から8.0であることを特徴とするコラーゲンまたはコラーゲン様組織を滅菌するための方法。
- 前記溶液は過酢酸濃度が0.1%であることを特徴とする請求項9の方法。
- 滅菌されたコラーゲンまたはコラーゲン様組織がその構造的完全性および生物学的リモデリング特性を保持することを特徴とする請求項1、2、3、4、9または10のいずれか1項に記載のコラーゲンまたはコラーゲン様組織を滅菌するための方法。
- 滅菌されたコラーゲンまたはコラーゲン様組織がその構造的完全性および生物学的リモデリング特性を保持することを特徴とする請求項5、6、7または8のいずれか1項に記載の滅菌剤。
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JP2007282514A (ja) * | 2006-04-12 | 2007-11-01 | Applied Cell Biotechnologies Inc | コラーゲン類生産方法及びコラーゲン類 |
JP2014505569A (ja) * | 2011-04-12 | 2014-03-06 | ハンス バイオメド コーポレーション | 哺乳類の軟骨組織由来の生体移植材 |
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MX9602545A (es) | 1997-05-31 |
CA2179017A1 (en) | 1995-07-13 |
JPH09508103A (ja) | 1997-08-19 |
EP0738106B1 (en) | 2001-08-16 |
EP0738106A4 (en) | 1997-05-28 |
EP0738106A1 (en) | 1996-10-23 |
DE69522203T2 (de) | 2002-05-23 |
US5460962A (en) | 1995-10-24 |
WO1995018529A1 (en) | 1995-07-13 |
CA2179017C (en) | 2005-05-03 |
ATE204122T1 (de) | 2001-09-15 |
PT738106E (pt) | 2001-12-28 |
JP3990408B2 (ja) | 2007-10-10 |
JP3708961B2 (ja) | 2005-10-19 |
DE69522203D1 (de) | 2001-09-20 |
ES2161281T3 (es) | 2001-12-01 |
DK0738106T3 (da) | 2001-10-08 |
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