JP2008513001A - α−グルコシダーゼ活性を用いたStreptococcusagalactiaeの検出方法 - Google Patents
α−グルコシダーゼ活性を用いたStreptococcusagalactiaeの検出方法 Download PDFInfo
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- 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
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- C12Q1/14—Streptococcus; Staphylococcus
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- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
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- G01N2333/195—Assays involving biological materials from specific organisms or of a specific nature from bacteria
- G01N2333/315—Assays involving biological materials from specific organisms or of a specific nature from bacteria from Streptococcus (G), e.g. Enterococci
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Abstract
【解決手段】本発明は、Streptococcus agalactiaeを特異的に検出及び識別する方法であって、少なくとも1つのα−グルコシダーゼ酵素基質を含む反応培地を使用することを特徴とする方法に関する。
【選択図】なし
Description
CDC(Center for Disease Control) recommendations, MMWR(Morbidity and Mortality Weekly Report),August 16,2002,Vol.51, No.RR−11
a) サンプルのすべて又は一部を上記反応培地に播種すること、
b) 播種した培地をインキュベートすること、
c) 少なくとも1つのα−グルコシダーゼ活性の存在を、単独で、又は、α−グルコシダーゼ活性以外の少なくとも1つの他の酵素活性と共に顕現させること
(本発明の別の主題を構成する)。
1.1 反応培地の調製
反応培地は、心臓−脳抽出物(4.84g/l;Solabia社)、肉汁(1.96g/l;Solabia社)、ビオチン(biothione)(1g/l;Solabia社)、ビオトリプカーゼ(biotrypcase)(7.2g/l;Solabia社)、炭酸ナトリウム(0.3g/l;VWR社)、ピルビン酸ナトリウム(2g/l;Fluka社)、HEPESバッファー(0.4g/l;シグマ社)、ラクトアルブミンペプトン(2g/l;DMV)、グルコース(1g/l;メルク社)、アメリカ寒天(2g/l;Sobigel社)及びヨーロッパ寒天(12g/l;Roko社)を混合することによって調製した。
* 6−ブロモ−3−インドリル−α−D−グルコピラノシド(RedA−α−Glu; Inalco社)
* 6−クロロ−3−インドリル−α−D−グルコピラノシド(Rose−α−Glu; Inalco社)
* 5−ブロモ−6−クロロ−3−インドリル−α−D−グルコピラノシド(Magenta−α−Glu;Glycosynth社)
* 5−ブロモ−4−クロロ−3−インドリル−α−D−グルコピラノシド(X−α−Glu;Biosynth社)
* 5−ブロモ−4−クロロ−3−インドリル−N−メチル−α−D−グルコピラノシド(GreenA−α−Glu;Inalco社)
本出願人が保存している株に由来するStreptococcus agalactiae株8つを生理食塩水中に懸濁して播種し、各培地上に別々にコロニーを形成させる。その後、培養皿を37℃において48時間インキュベートした。18時間、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る。このコロニーの着色、増殖、及び、この着色の濃さについて記録した。
得られた結果を、下記表1中に示し、以下のように示す。
− 増殖(G)について、大きさはmmで示される。
− 着色の濃さ(I)について、0〜4の任意のスケールに基づいて、0は活性がないことに相当し、4は非常に濃い着色があることに相当する。
− 色(Co)について、T=青緑色、R=ピンク色又は赤色、Gr=緑色、Mg=赤紫色である。
− インキュベート時間について、時間(T)である。
酵素基質の濃度を変える以外は上記プロトコルを繰り返した。
この基質133mg/lを使用し、かつ、オートクレーブした後でアズトレオナム(ICN社)0.047g/l、アンホテリシンB(Squibb社)0.004g/l及び次の成分を培地に添加する以外は、GreenA−α−Gluを使用して、実施例1中に記載されるプロトコルを繰り返した。
培地1;実施例1の培地に対応するコントロール培地とGreenA−α−Gluとを、上述のように改変したもの。
培地2;6−クロロ−3−インドリル−β−D−セロビオシダーゼ(Rose−β−セロビオシダーゼ)400mg/l。
培地3;6−クロロ−3−インドリル−β−N−アセチルグルコサミニド(Rose−β−NAGlu)400mg/l及びN−アセチルグルコサミニド0.5g/l。
この感度試験において、上記実施例中に記載されるように調製した、GreenA−α−Glu 0.130g/lと、Rose−β−D−セロビオシダーゼ0.250g/l、アズトレオナム0.064g/l及びアンホテリシンB(α−Glu培地)0.004g/lを含む本発明による培地を使用した。
この試験には、上記実施例4中で調製された本発明による培地を使用した。
Claims (6)
- Streptococcus agalactiaeを特異的に検出及び識別する方法であって、
少なくとも1つのα−グルコシダーゼ酵素基質を含む反応培地を使用する
ことを特徴とする方法。 - 酵素基質はインドキシル誘導体に基づく基質である
ことを特徴とする請求項1に記載の方法。 - 反応培地中の酵素基質の濃度は10〜2000mg/lである
ことを特徴とする請求項2に記載の方法。 - 前記反応培地は、アズトレオナム及びアンホテリシンBの混合物をさらに含む
ことを特徴とする請求項1〜3のいずれか1項に記載の方法。 - 反応培地は、好ましくはβ−セロビオシダーゼ基質及びβ−グルコサミニダーゼ基質から選択される、異なる酵素活性に対する少なくとも1つの他の基質をさらに含む
ことを特徴とする請求項1〜4のいずれか1項に記載の方法。 - Streptococcus agalactiae種の細菌を含んでいることが多い試料中においてStreptococcus agalactiae種の細菌を特異的に検出及び識別する方法であって、
次の工程:
d) サンプルのすべて又は一部を請求項1〜5のいずれか1項に記載の反応培地に播種すること、
e) 播種した培地をインキュベートすること、
f) 少なくとも1つのα−グルコシダーゼ活性の存在を、単独で、又は、α−グルコシダーゼ活性以外の少なくとも1つの他の酵素活性と共に顕現させること:を含む
ことを特徴とする方法。
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FR0452066 | 2004-09-16 | ||
FR0452066A FR2875240B1 (fr) | 2004-09-16 | 2004-09-16 | Procede de detection de streptococcus agalactiae en utilisant l'activite alpha-glucosidase |
PCT/FR2005/050740 WO2006032810A1 (fr) | 2004-09-16 | 2005-09-14 | PROCEDE DE DETECTION DE STREPTOCOCCUS AGALACTIAE EN UTILISANT L'ACTIVITE α-GLUCOSIDASE |
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JP2011519579A (ja) * | 2008-05-15 | 2011-07-14 | トピジェン ファーマスーティカルズ インク | 炎症および新生細胞増殖の治療のためのオリゴヌクレオチド |
JP2014512408A (ja) * | 2011-04-29 | 2014-05-22 | エフィック ソシエテ アノニム | アルキルポリグルコシドをベースとする膣用組成物 |
JP2016540513A (ja) * | 2013-12-16 | 2016-12-28 | コンパニー ジェルヴェ ダノンCompagnie Gervais Danone | 食品中の混合物中の乳酸菌の差別的列挙の方法 |
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FR2915492B1 (fr) * | 2007-04-30 | 2011-04-15 | Biomerieux Sa | Milieu reactionnel pour l'identification / detection de microorganismes |
CN101686964A (zh) * | 2007-05-22 | 2010-03-31 | 威斯康星旧生研究基金会 | 基因组维护接口的抗细菌药物靶向 |
FR2937052A1 (fr) * | 2008-10-08 | 2010-04-16 | Biomerieux Sa | Milieu reactionnel pour les bacteries staphylococcus aureus |
FR2936816B1 (fr) * | 2008-10-08 | 2013-03-22 | Biomerieux Sa | Milieu reactionnel pour les bacteries staphylococcus aureus resistantes a la meticilline (mrsa) |
US8497086B2 (en) * | 2009-08-13 | 2013-07-30 | Biomereux | Reaction medium for methicillin-resistant Staphylococcus aureus (MRSA) bacteria |
CN101991437B (zh) * | 2009-08-24 | 2013-09-04 | 深圳迈瑞生物医疗电子股份有限公司 | 一种信号处理方法和装置及多普勒超声系统 |
WO2013140210A1 (en) * | 2012-03-21 | 2013-09-26 | Empire Technology Development Llc | Identification of cellulolytic microorganism contamination in food and other materials |
CN107287275B (zh) * | 2016-03-31 | 2022-02-01 | 启新生物科技有限公司 | 培养基、包含其的试剂盒、及其应用 |
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JP2014512408A (ja) * | 2011-04-29 | 2014-05-22 | エフィック ソシエテ アノニム | アルキルポリグルコシドをベースとする膣用組成物 |
JP2016540513A (ja) * | 2013-12-16 | 2016-12-28 | コンパニー ジェルヴェ ダノンCompagnie Gervais Danone | 食品中の混合物中の乳酸菌の差別的列挙の方法 |
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