JP5164567B2 - 慢性副鼻腔炎の重症度および再発性の検査方法 - Google Patents
慢性副鼻腔炎の重症度および再発性の検査方法 Download PDFInfo
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Description
鼻茸は慢性副鼻腔炎の症状のうち鼻閉や頭重感を引き起こすのみならず、鼻副鼻腔の換気障害による副鼻腔炎の重症化や、後鼻漏による下気道の障害を引き起こす。
したがって、鼻茸を伴う慢性副鼻腔炎の治療は手術療法であるが、喘息を合併した症例や、局所の好酸球浸潤の強い症例は2〜3年以内に再発が認められる。
アレルギー, Vol.54, No.3/4, Page.384 アレルギー, Vol.52, No.8/9, Page.759
1)副鼻腔炎に伴う重症の鼻茸では好酸球の浸潤が顕著である。
2)通常、好酸球にはH−PGDSが検出されないが、病変部位ではEG2あるいはMBP陽性の活性化好酸球でH−PGDSの発現が亢進する。
3)好酸球でのH−PGDSの発現量は、好酸球性炎症疾患の重症度と相関する。すなわちH−PGDSの発現量が高いほど好酸球性炎症疾患が重症である。
4)好酸球でのH−PGDSの発現量は、鼻茸の再発率と相関する。すなわちH−PGDSの発現量が高いほど鼻茸の再発率が高い。
2)好酸球性疾患を誘導する前または後に造血器型プロスタグランジンD合成酵素(H−PGDS)阻害物質またはプロスタグランジン受容体(DP)拮抗薬候補化合物をトランスジェニックマウスに投与し、
3)トランスジェニックマウスにおける好酸球性炎症疾患の状態を、候補物質を与えないトランスジェニックマウスにおける状態と比較する、
ことを含む好酸球性炎症疾患の進行を防止し、または再発の予防に用いる化合物のスクリーニング方法をも要旨とする。
本発明において「重症度」とは、好酸球性炎症疾患を軽症、中等症、重症に分ける指標を示し、それぞれの疾患の診断基準や重症度分類等(例えば、2002年版 鼻アレルギー診療ガイドライン、厚生労働省21世紀型医療開拓推進研究事業[EBM分野]アレルギー鼻炎ガイドライン班 作成)により診断される。
本発明において「再発性」とは、好酸球性炎症疾患(特に鼻茸)症状の再燃性を示し、例えば鼻茸を伴う慢性副鼻腔炎の場合には、鼻茸切除後、2年以内に副鼻腔粘膜の腫脹が見られた場合を「再発」とする。
また上述のように測定したPGD2量、H−PGDSについて、好酸球性炎症疾患の炎症部位でのPGD2量、H−PGDSタンパク質の発現量が高いほど、好酸球性炎症疾患の再発性が高いことが明らかとなった。特に鼻茸においては、鼻茸におけるPGD2量、H−PGDSタンパク質の発現量が高いほど、鼻茸の再発性、特に鼻茸切除後の経過を追跡した2年以内の再発性が高いことが明らかとなった。従って、本発明は、患者から採取された好酸球性炎症疾患の炎症部位でのH−PGDSタンパク質の発現量またはPGD2量が高いほど、好酸球性炎症疾患の再発性が高いと予測する、好酸球性炎症疾患の再発性を予測する方法も提供する。更には、患者から採取された鼻茸でのH−PGDSタンパク質の発現量またはPGD2量が高いほど、鼻茸の再発性が高いことを予測する、鼻茸の再発性を予測する方法も提供する。
本願発明により好酸球性炎症疾患とH-PDGSの発現が相関性を有する事が明らかになったので、H-PDGSの発現が好酸球性炎症疾患の発症の原因である事が予測し得る。したがってH−PGDS阻害物質またはDP拮抗薬が好酸球性炎症疾患の治療剤となりうる可能性がある。
製薬上許容される塩とは、塩基性塩として、例えば、ナトリウム塩、カリウム塩等のアルカリ金属塩;カルシウム塩、マグネシウム塩等のアルカリ土類金属塩;アンモニウム塩;トリメチルアミン塩、トリエチルアミン塩、ジシクロヘキシルアミン塩、エタノールアミン塩、ジエタノールアミン塩、トリエタノールアミン塩、ブロカイン塩等の脂肪族アミン塩;N,N−ジベンジルエチレンジアミン等のアラルキルアミン塩;ピリジン塩、ピコリン塩、キノリン塩、イソキノリン塩等のヘテロ環芳香族アミン塩;テトラメチルアンモニウム塩、テトラエチルアモニウム塩、ベンジルトリメチルアンモニウム塩、ベンジルトリエチルアンモニウム塩、ベンジルトリブチルアンモニウム塩、メチルトリオクチルアンモニウム塩、テトラブチルアンモニウム塩等の第4級アンモニウム塩;アルギニン塩、リジン塩等の塩基性アミノ酸塩等が挙げられる。酸性塩としては、例えば、塩酸塩、硫酸塩、硝酸塩、リン酸塩、炭酸塩、炭酸水素塩、過塩素酸塩等の無機酸塩;酢酸塩、プロピオン酸塩、乳酸塩、マレイン酸塩、フマール酸塩、酒石酸塩、リンゴ酸塩、クエン酸塩、アスコルビン酸塩等の有機酸塩;メタンスルホン酸塩、イセチオン酸塩、ベンゼンスルホン酸塩、p−トルエンスルホン酸塩等のスルホン酸塩;アスパラギン酸塩、グルタミン酸塩等の酸性アミノ酸等が挙げられる。これらの塩は、通常行われる方法によって形成させることができる。水和物を形成する時は、任意の数の水分子と配位していてもよい。
2)好酸球性疾患を誘導する前または後にH−PGDS阻害物質またはDP拮抗薬候補化合物をトランスジェニックマウスに投与し、
3)トランスジェニックマウスにおける好酸球性炎症疾患の状態を、候補物質を与えないトランスジェニックマウスにおける状態と比較する、
ことを含む好酸球性炎症疾患の進行を防止し、または再発の予防に用いる化合物のスクリーニング方法にも関する。
鼻茸でのH−PGDSの細胞分布を調べる目的で、H−PGDSと好酸球の指標である主要塩基性蛋白質(MBP)に対する抗体を用いた酵素免疫染色を行った。
EG2陽性活性化好酸球でのH−PGDSの発現
鼻茸でのH−PGDSの活性化好酸球への分布を調べる目的で、H−PGDSと活性化好酸球の指標であるEG2抗原(Eosinophil Cationic Protein (ECP)活性化された好酸球に認められる、傷害性の蛋白質)を特異的に認識する抗体(Bentley AM, Jacobson MR, Cumberworth V, Barkans JR, Moqbel R. et al. Immunohistology of the nasal mucosa in seasonal allergic rhinitis: increases in activated eosinophils and epithelial mast cells. J Allergy Clin Immunol. 1992;89(4): 877-83.)の発現を免疫組織化学染色法によって比較した。
慢性副鼻腔炎患者から採取した鼻茸組織検体のウェスタンブロッティング(1)
鼻茸でのH−PGDS蛋白質の発現を調べる目的で、鼻茸組織の抽出液を用いてSDSゲル電気泳動を行い、泳動後の蛋白質の転写ナイロン膜を用いてH−PGDSに対する抗体によるウェスタンブロッティングを行った。
鼻茸切除時点でのH−PGDSタンパク質の発現と再発率の関係を調べる目的で、鼻茸切除後の経過を追跡し、2年以内に副鼻腔粘膜の腫脹が見られた症例を再発群とし、2年以内に粘膜の腫脹が見られなかった症例を経過良好群として、H−PGDSの発現を調べた。患者背景を表2に示す。
実施例3と同様の方法で、H−PGDS抗体、シクロオキシゲナーゼ(COX)−1、COX−2抗体にてウェスタンブロッティング(Kanaoka Y, Ago H, Inagaki E, et al. Cloning and crystal structure of hematopoietic prostaglandin D synthase. Cell 1997; 90:10851095.)を行った。
慢性副鼻腔炎患者から採取した鼻茸組織検体の定量的PCR
H−PGDS mRNAの発現と再発率との関係を調べる目的で、定量的RT−PCR(Kanaoka Y, Ago H, Inagaki E, et al. Cloning and crystal structure of hematopoietic prostaglandin D synthase. Cell 1997; 90:10851095.)を行った。
以上の結果は、患者から採取した組織のH−PGDSタンパク質やmRNA量をウェスタンブロッティング法やPCR法で定量することによって、鼻茸の再発性を予測することができることを示している。
好酸球でのH−PGDS発現と再発率との関係を調べる目的で、実施例2と同様の方法で、好酸球EG2抗体とH−PGDSとの蛍光抗体染色を行った。
その結果、経過良好群(症例R12)では、H−PGDSとEG2陽性細胞(図6、矢印)はほとんど一致しないが、再発群(症例R6)では、EG2陽性細胞のほとんどがH−PGDS陽性細胞と一致する。以上の結果は、H−PGDSとEG2の両方が陽性の活性化好酸球の多い鼻茸は再発率が高いことを示している。
Claims (7)
- 患者から採取された炎症部位での造血器型プロスタグランジンD合成酵素(H−PGDS)タンパク質の発現を測定することを含み、当該測定が主要塩基性蛋白質(MBP)陽性細胞数に対するH−PGDS陽性細胞数の割合を測定することを含み、その測定された割合が25.4%より高いことを慢性副鼻腔炎の重症度の指標とすることを特徴とする、慢性副鼻腔炎の重症度を検査する方法。
- 患者から採取される炎症部位が鼻茸であることを特徴とする、請求項1に記載の方法。
- 患者から採取された炎症部位での造血器型プロスタグランジンD合成酵素(H−PGDS)タンパク質の発現を測定することを含み、当該測定がEG2陽性細胞数に対するH−PGDS陽性細胞数の割合を測定することを含み、その測定された割合が44.3%より高いことを慢性副鼻腔炎の重症度の指標とすることを特徴とする、慢性副鼻腔炎の重症度を検査する方法。
- 患者から採取される炎症部位が鼻茸であることを特徴とする、請求項3に記載の方法。
- 患者から採取された炎症部位での造血器型プロスタグランジンD合成酵素(H−PGDS)タンパク質の発現を定量的RT−PCRにより測定することを含み、その測定されたH−PGDSタンパク質の発現量が、同じ部位での定量的RT−PCRによるGAPDHの発現量に対して0.04より高いことを慢性副鼻腔炎の再発性の指標とすることを特徴とする、慢性副鼻腔炎の再発性を検査する方法。
- 患者から採取される炎症部位が鼻茸であることを特徴とする、請求項5に記載の方法。
- 慢性副鼻腔炎が、鼻茸を伴うことを特徴とする、請求項5または6に記載の方法。
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JP5871228B2 (ja) | 2011-10-31 | 2016-03-01 | 国立大学法人佐賀大学 | 慢性副鼻腔炎の検出方法 |
US9444723B1 (en) * | 2014-01-15 | 2016-09-13 | Cisco Technology, Inc. | Passing data over virtual links |
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JPN6011036038; 岡野光博 他: '慢性副鼻腔炎におけるプロスタグランジン合成酵素の難治化への関与' 日本耳鼻咽喉科学会会報 Vol.108 No.4, 20050420, Page.455 * |
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EP1882937B1 (en) | 2012-02-22 |
US8568967B2 (en) | 2013-10-29 |
US20100138937A1 (en) | 2010-06-03 |
EP1882937A1 (en) | 2008-01-30 |
EP1882937A4 (en) | 2009-03-25 |
JPWO2006123677A1 (ja) | 2008-12-25 |
WO2006123677A1 (ja) | 2006-11-23 |
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