JP5086246B2 - ビブリオ菌用反応媒体 - Google Patents
ビブリオ菌用反応媒体 Download PDFInfo
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- 239000012429 reaction media Substances 0.000 title claims description 13
- 241000607598 Vibrio Species 0.000 title description 16
- 241000607626 Vibrio cholerae Species 0.000 claims description 28
- 241000607272 Vibrio parahaemolyticus Species 0.000 claims description 24
- 229940118696 vibrio cholerae Drugs 0.000 claims description 20
- 239000000758 substrate Substances 0.000 claims description 19
- 235000000346 sugar Nutrition 0.000 claims description 15
- 102000005936 beta-Galactosidase Human genes 0.000 claims description 13
- 108010005774 beta-Galactosidase Proteins 0.000 claims description 13
- 230000000694 effects Effects 0.000 claims description 13
- SRBFZHDQGSBBOR-UHFFFAOYSA-N beta-D-Pyranose-Lyxose Natural products OC1COC(O)C(O)C1O SRBFZHDQGSBBOR-UHFFFAOYSA-N 0.000 claims description 9
- PGSADBUBUOPOJS-UHFFFAOYSA-N neutral red Chemical group Cl.C1=C(C)C(N)=CC2=NC3=CC(N(C)C)=CC=C3N=C21 PGSADBUBUOPOJS-UHFFFAOYSA-N 0.000 claims description 6
- AEMOLEFTQBMNLQ-AQKNRBDQSA-N D-glucopyranuronic acid Chemical compound OC1O[C@H](C(O)=O)[C@@H](O)[C@H](O)[C@H]1O AEMOLEFTQBMNLQ-AQKNRBDQSA-N 0.000 claims description 5
- 229940097042 glucuronate Drugs 0.000 claims description 5
- 239000003550 marker Substances 0.000 claims description 5
- 238000000338 in vitro Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 230000020477 pH reduction Effects 0.000 claims description 4
- 239000003593 chromogenic compound Substances 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- ZPLCXHWYPWVJDL-UHFFFAOYSA-N 4-[(4-hydroxyphenyl)methyl]-1,3-oxazolidin-2-one Chemical compound C1=CC(O)=CC=C1CC1NC(=O)OC1 ZPLCXHWYPWVJDL-UHFFFAOYSA-N 0.000 claims description 2
- 150000008163 sugars Chemical class 0.000 claims description 2
- SRBFZHDQGSBBOR-HWQSCIPKSA-N L-arabinopyranose Chemical compound O[C@H]1COC(O)[C@H](O)[C@H]1O SRBFZHDQGSBBOR-HWQSCIPKSA-N 0.000 claims 2
- 239000002609 medium Substances 0.000 description 45
- 238000001514 detection method Methods 0.000 description 10
- 235000015097 nutrients Nutrition 0.000 description 8
- 238000004040 coloring Methods 0.000 description 7
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- PYMYPHUHKUWMLA-LMVFSUKVSA-N aldehydo-D-ribose Chemical compound OC[C@@H](O)[C@@H](O)[C@@H](O)C=O PYMYPHUHKUWMLA-LMVFSUKVSA-N 0.000 description 2
- PYMYPHUHKUWMLA-WDCZJNDASA-N arabinose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)C=O PYMYPHUHKUWMLA-WDCZJNDASA-N 0.000 description 2
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- 238000012800 visualization Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- QWZHDKGQKYEBKK-UHFFFAOYSA-N 3-aminochromen-2-one Chemical compound C1=CC=C2OC(=O)C(N)=CC2=C1 QWZHDKGQKYEBKK-UHFFFAOYSA-N 0.000 description 1
- CJIJXIFQYOPWTF-UHFFFAOYSA-N 7-hydroxycoumarin Natural products O1C(=O)C=CC2=CC(O)=CC=C21 CJIJXIFQYOPWTF-UHFFFAOYSA-N 0.000 description 1
- 241000589291 Acinetobacter Species 0.000 description 1
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000238424 Crustacea Species 0.000 description 1
- GUBGYTABKSRVRQ-CUHNMECISA-N D-Cellobiose Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1O[C@@H]1[C@@H](CO)OC(O)[C@H](O)[C@H]1O GUBGYTABKSRVRQ-CUHNMECISA-N 0.000 description 1
- GUBGYTABKSRVRQ-UHFFFAOYSA-N D-Cellobiose Natural products OCC1OC(OC2C(O)C(O)C(O)OC2CO)C(O)C(O)C1O GUBGYTABKSRVRQ-UHFFFAOYSA-N 0.000 description 1
- WQZGKKKJIJFFOK-QTVWNMPRSA-N D-mannopyranose Chemical compound OC[C@H]1OC(O)[C@@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-QTVWNMPRSA-N 0.000 description 1
- 206010012735 Diarrhoea Diseases 0.000 description 1
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- 241000588724 Escherichia coli Species 0.000 description 1
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- 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
- 241000607259 Grimontia hollisae Species 0.000 description 1
- 241000588748 Klebsiella Species 0.000 description 1
- 241000588915 Klebsiella aerogenes Species 0.000 description 1
- 125000003599 L-arabinosyl group Chemical group C1([C@H](O)[C@@H](O)[C@@H](O)CO1)* 0.000 description 1
- 241000186781 Listeria Species 0.000 description 1
- 239000006154 MacConkey agar Substances 0.000 description 1
- 241000588621 Moraxella Species 0.000 description 1
- 241000237536 Mytilus edulis Species 0.000 description 1
- 241000237502 Ostreidae Species 0.000 description 1
- 241000607000 Plesiomonas Species 0.000 description 1
- 241000589516 Pseudomonas Species 0.000 description 1
- 239000006159 Sabouraud's agar Substances 0.000 description 1
- 241000277331 Salmonidae Species 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 241000191940 Staphylococcus Species 0.000 description 1
- 241000607594 Vibrio alginolyticus Species 0.000 description 1
- 241001135144 Vibrio metschnikovii Species 0.000 description 1
- 241000607253 Vibrio mimicus Species 0.000 description 1
- 241000607265 Vibrio vulnificus Species 0.000 description 1
- 208000012873 acute gastroenteritis Diseases 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- WQZGKKKJIJFFOK-PHYPRBDBSA-N alpha-D-galactose Chemical compound OC[C@H]1O[C@H](O)[C@H](O)[C@@H](O)[C@H]1O WQZGKKKJIJFFOK-PHYPRBDBSA-N 0.000 description 1
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 1
- 102000006995 beta-Glucosidase Human genes 0.000 description 1
- 108010047754 beta-Glucosidase Proteins 0.000 description 1
- 210000000941 bile Anatomy 0.000 description 1
- 239000012472 biological sample Substances 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 235000014633 carbohydrates Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000007382 columbia agar Substances 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
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- 229940092559 enterobacter aerogenes Drugs 0.000 description 1
- 230000002255 enzymatic effect Effects 0.000 description 1
- GNBHRKFJIUUOQI-UHFFFAOYSA-N fluorescein Chemical compound O1C(=O)C2=CC=CC=C2C21C1=CC=C(O)C=C1OC1=CC(O)=CC=C21 GNBHRKFJIUUOQI-UHFFFAOYSA-N 0.000 description 1
- -1 for example Substances 0.000 description 1
- 229930182830 galactose Natural products 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000003102 growth factor Substances 0.000 description 1
- 239000003966 growth inhibitor Substances 0.000 description 1
- 238000011081 inoculation Methods 0.000 description 1
- 235000020638 mussel Nutrition 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 235000020636 oyster Nutrition 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 239000007793 ph indicator Substances 0.000 description 1
- 239000002504 physiological saline solution Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- HSSLDCABUXLXKM-UHFFFAOYSA-N resorufin Chemical compound C1=CC(=O)C=C2OC3=CC(O)=CC=C3N=C21 HSSLDCABUXLXKM-UHFFFAOYSA-N 0.000 description 1
- 239000012449 sabouraud dextrose agar Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 235000015170 shellfish Nutrition 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000009331 sowing Methods 0.000 description 1
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- 125000000185 sucrose group Chemical group 0.000 description 1
- DHCDFWKWKRSZHF-UHFFFAOYSA-N sulfurothioic S-acid Chemical compound OS(O)(=O)=S DHCDFWKWKRSZHF-UHFFFAOYSA-N 0.000 description 1
- 235000019465 surimi Nutrition 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- ORHBXUUXSCNDEV-UHFFFAOYSA-N umbelliferone Chemical compound C1=CC(=O)OC2=CC(O)=CC=C21 ORHBXUUXSCNDEV-UHFFFAOYSA-N 0.000 description 1
- HFTAFOQKODTIJY-UHFFFAOYSA-N umbelliferone Natural products Cc1cc2C=CC(=O)Oc2cc1OCC=CC(C)(C)O HFTAFOQKODTIJY-UHFFFAOYSA-N 0.000 description 1
- 239000007151 vibrio medium Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/02—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving viable microorganisms
- C12Q1/04—Determining presence or kind of microorganism; Use of selective media for testing antibiotics or bacteriocides; Compositions containing a chemical indicator therefor
- C12Q1/045—Culture media therefor
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q2334/00—O-linked chromogens for determinations of hydrolase enzymes, e.g. glycosidases, phosphatases, esterases
- C12Q2334/50—Indoles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2333/00—Assays involving biological materials from specific organisms or of a specific nature
- G01N2333/195—Assays involving biological materials from specific organisms or of a specific nature from bacteria
- G01N2333/28—Assays involving biological materials from specific organisms or of a specific nature from bacteria from Vibrionaceae (F)
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2333/00—Assays involving biological materials from specific organisms or of a specific nature
- G01N2333/90—Enzymes; Proenzymes
- G01N2333/914—Hydrolases (3)
- G01N2333/924—Hydrolases (3) acting on glycosyl compounds (3.2)
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S435/00—Chemistry: molecular biology and microbiology
- Y10S435/8215—Microorganisms
- Y10S435/822—Microorganisms using bacteria or actinomycetales
- Y10S435/909—Vibrio
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Zoology (AREA)
- Wood Science & Technology (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Analytical Chemistry (AREA)
- Toxicology (AREA)
- Immunology (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Biophysics (AREA)
- Physics & Mathematics (AREA)
- Biotechnology (AREA)
- Biochemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Genetics & Genomics (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
Description
・β−ガラクトシダーゼ酵素活性検出用の基質、
・糖、
・着色標識。
この培養基は、液体、又は、調製済みのゲル、すなわちチューブ若しくはフラスコ又はペトリ皿内で接種可能な形態であってよい。培養基がフラスコ中にある場合には、ペトリ皿中に注ぐ前に、媒体をあらかじめ再生しておく(100℃を通す)ことが好ましい。本発明による媒体は、選択媒体、すなわち、検出対象である細菌及び酵母の増殖阻害剤を含む媒体であることが好ましい。
・明らかにしたい酵素活性に対して特異的な第一の部分(この第一の部分は、対象微生物に特異的な上記酵素と相互作用することができる)、
・蛍光性であっても発色性であってもよい、標識として作用する、第二の部分(以下、標識部分と呼ぶ)。
a−純粋な菌株を使用する媒体の評価
本発明による媒体は、ビブリオ菌22株(コレラ菌 8株、V.mimicus 2株、V.vulnificus 2株、腸炎ビブリオ 4株、V.alginolyticus 2株、V.fluvialis 2株、V.hollisae 1株及びV.metschnikovii 1株);ブドウ球菌 8株;
シュードモナス 6株;カンジダ 6株;エンテロコッカス 4株;腸内細菌 3株;大腸菌 2株;クレブシエラ 2株;プロテウス属腸内細菌 2株;サルモネラ菌 2株;シゲラ 2株;エルシニア属 2株;アエロモナス属 2株;モラクセラ属 2株;プレシオモナス属 2株;リステリア 1株;アシネトバクター属 1株を含む69株について試験した。
次の4つの養分マトリックス:カキ、テナガエビ、急速冷凍されたシーバスの切り身及びシートラウト全身を、コレラ菌で汚染させた。上記以外の5マトリックス、タラ科の切り身、冷凍の地中海テナガエビ、イガイ、魚パテ及びすり身を、腸炎ビブリオで汚染させた。
本発明による媒体は、塩基性媒体としてトリプカーゼ大豆媒体(trypcase−soy medium)(ビオメリュー社、商品番号43011)を含み、かつ、次の要素(g/l)を含む選択媒体である。
IPTG(イソプロピルチオガラクトピラノシド) 0.05
胆汁酸塩 0.6
ニュートラルレッド 0.005
L−アラビノース 10
5−ブロモ−4−クロロ−3−インドキシル−β−D−ガラクトピラノシド 0.1
さらに、第二の糖(グルクロン酸塩;10g/l)を、腸炎ビブリオ及びコレラ菌の検出の特異性を改善するために添加する。
本出願人が保存している株に由来する細菌及び酵母の株を、生理食塩水中に懸濁して播種し、各媒体上に別々にコロニーを形成させた。培養皿を37℃において48時間インキュベートした。24時間又は40時間以上インキュベートした後に、形成されたコロニーの外観を調べた。これらのコロニーの着色の強度を評価した後、菌株が着色強度の値が>0.5であれば陽性であると考えて、それぞれの菌株を陽性と陰性とに分けた(所望の表現型を発現しているか、発現していないか)。
着色強度の読み取り尺度
この尺度は、試験した全生体試料及び媒体に共通の任意のものである。この尺度は、この実験と、後続の実験についても有効である。次のように定義することができる:
* 0 活性がないことに相当する。
* 0.1 わずかな着色に相当する。
* 0.5 非常に薄い着色に相当する。
* 1 明瞭かつ強度の弱い着色に相当する。
* 2 強度が中程度で明確な着色に相当する。
* 3 濃い着色に相当する。
* 4 非常に濃い着色に相当する。
結果は、24時間インキュベート後の感度及び特異性について全試験に対する正確な診断の%で表し、下記表中に、媒体上における真の陽性の検出数を真の陽性の総検出数で割った値に相当する%感度、及び、媒体上における真の陰性の検出数を真の陰性の総検出数で割った値に相当する%特異性で表す。
以下の表中に示す結果は、37℃で24時間インキュベートした後で観察されたものである。人工汚染されたマトリックスから得られた媒体をそれぞれ、対照媒体(人工汚染されていない養分マトリックスから得られた)と比較することによって、関連する叢のうち、養分を汚染するのに理論上使用される細菌種を特定する。上記で特定されたそれぞれのコロニーを分離し、その後、従来の試験によって識別する。識別が確認された場合、そのコロニーは真の+と考えられ、逆の場合には偽の+である。さらに、予想される色のコロニー以外に、予想されていないが特有の着色を示す他のコロニーに対しても、識別を実行する。識別によって、予想外の種に属するがコレラ菌群(vulnificus、mimicus)又は腸炎ビブリオの一部である種が確認される場合、真の+であり、養分中に天然に存在する;一方、識別によりコレラ菌(vulnificus、mimicus)又は腸炎ビブリオが確認されない場合、その種は偽の+であると考えられる。
ビブリオ菌ID媒体は、感度及び特異性の点から性能が良好である。さらに、読み取りやすさ、すなわち陽性コロニーを検出する能力又は陰性コロニーを除外する能力も非常に良好である。感度は、汚染度の低いサンプルの場合に非常に良好である。
Claims (7)
- 以下を含む、コレラ群ビブリオ菌(コレラ菌/vulnificus及びmimicus)及び腸炎ビブリオ細菌用の反応媒体:
・β−ガラクトシダーゼ酵素活性検出用の基質、
・L−アラビノース及びグルクロン酸塩からなる群より選択される少なくとも1つの糖、
・pHが変化すると変色する着色標識。 - 前記着色標識はニュートラルレッド又はブロモチモールブルーである
ことを特徴とする請求項1に記載の反応媒体。 - 前記着色標識はニュートラルレッドである
ことを特徴とする請求項1又は2に記載の反応媒体。 - 前記糖はL−アラビノース及びグルクロン酸塩である
ことを特徴とする請求項1〜3のいずれか1項に記載の反応媒体。 - 前記基質はX−β−ガラクトシド発色性基質である
ことを特徴とする請求項1〜4のいずれか1項に記載の反応媒体。 - 請求項1〜5のいずれか1項に記載の媒体を用いてコレラ菌と腸炎ビブリオ細菌とをin vitroにおいて識別する方法であって、これによって、β−ガラクトシダーゼ活性が検出されてコレラ菌が識別され、糖の酸性化が検出されて腸炎ビブリオが明らかにされる方法。
- コレラ群ビブリオ菌(コレラ菌/vulnificus及びmimicus)及び腸炎ビブリオを分離及び識別するための、請求項1〜5のいずれか1項に記載の媒体のin vitroにおける使用。
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