JP6427497B2 - 眼疾患の治療剤又は予防剤 - Google Patents
眼疾患の治療剤又は予防剤 Download PDFInfo
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- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
Description
一般名アフリベルセプトは、日本国薬事法14条の規定に基づく医薬品等の製造販売の承認を受けた医薬品である(承認番号:番号:22400AMX01389)。アフリベルセプトは、ヒトVEGF受容体1及び2の細胞外ドメインをヒトIgG1のFcドメインに結合した組換え融合糖蛋白質である。アフリベルセプトは、可溶性のデコイ受容体として、VEGF−A及びPIGFに結合することで、これらの作用を阻害し、中心窩下脈絡膜新生血管を伴う加齢黄斑変性の治療に有効であることが知られている。
一般名ペガプタニブは、日本国薬事法14条の規定に基づく医薬品等の製造販売の承認を受けた医薬品である(承認番号:番号:22000AMX01705)。ペガプタニブは、VEGF−A165に対して選択的かつ高い親和性で結合しその活性を阻害するPEG化オリゴヌクレオチドであり、中心窩下脈絡膜新生血管を伴う加齢黄斑変性の治療に有効であることが知られている。
[1]
下記化学構造式:
有機酸との塩として、シュウ酸、マレイン酸、クエン酸、フマル酸、乳酸、リンゴ酸、コハク酸、酒石酸、酢酸、トリフルオロ酢酸、グルコン酸、アスコルビン酸、メタンスルホン酸、ベンゼンスルホン酸、p−トルエンスルホン酸等との塩が挙げられる。
本発明の医薬組成物は、医薬製剤の技術分野において公知の方法に従って、化合物A又はその製薬上許容される塩を、少なくとも1種以上の製薬上許容される担体等と、適宜、適量混合等することによって、製造される。該医薬組成物中の化合物A又はその製薬上許容される塩の含量は、剤形、投与量等により異なる。
「崩壊剤」としては、カルメロース、カルメロースカルシウム、カルメロースナトリウム、カルボキシメチルスターチナトリウム、クロスカルメロースナトリウム、クロスポビドン、低置換度ヒドロキシプロピルセルロース、ヒドロキシプロピルメチルセルロース、結晶セルロース等が挙げられる。
「結合剤」としては、ヒドロキシプロピルセルロース、ヒドロキシプロピルメチルセルロース、ポビドン、結晶セルロース、白糖、デキストリン、デンプン、ゼラチン、カルメロースナトリウム、アラビアゴム等が挙げられる。
「流動化剤」としては、軽質無水ケイ酸、ステアリン酸マグネシウム等が挙げられる。
「滑沢剤」としては、ステアリン酸マグネシウム、ステアリン酸カルシウム、タルク等が挙げられる。
「溶解補助剤」としては、プロピレングリコール、D−マンニトール、安息香酸ベンジル、エタノール、トリエタノールアミン、炭酸ナトリウム、クエン酸ナトリウム等が挙げられる。
「懸濁化剤」としては、塩化ベンザルコニウム、カルメロース、ヒドロキシプロピルセルロース、プロピレングリコール、ポビドン、メチルセルロース、モノステアリン酸グリセリン等が挙げられる。
「等張化剤」としては、ブドウ糖、D−ソルビトール、塩化ナトリウム、D−マンニトール等が挙げられる。
「緩衝剤」としては、リン酸水素ナトリウム、酢酸ナトリウム、炭酸ナトリウム、クエン酸ナトリウム等が挙げられる。
「無痛化剤」としては、ベンジルアルコール等が挙げられる。
「抗酸化剤」としては、亜硫酸ナトリウム、アスコルビン酸等が挙げられる。
「着色剤」としては、食用色素(例えば食用赤色2号又は3号、食用黄色4号又は5号等)、β−カロテン等が挙げられる。
「甘味剤」としては、サッカリンナトリウム、グリチルリチン酸二カリウム、アスパルテーム等が挙げられる。
ラットVEGF誘発網膜血管透過性増加モデルを用いて、化合物Aの網膜血管透過性増加抑制作用を評価した。動物モデルは、非特許文献3等を基に適宜の改変を加えて作成した。
実験動物は、8週齢の雄性Brown Norwayラット(日本チャールス・リバー株式会社)を用いた。
ラット両眼の硝子体内に、ラットVEGF164(400ng/eye、R&D Systems社)を注射した(VEGF投与群)。正常対照群のラット両眼の硝子体内には、D−PBS(−)(Sigma−Aldrich社)を硝子体内注射した。各群の例数は4匹(8眼)であった。
1%(w/v)メチルセルロース水溶液に懸濁した化合物Aを10mg/kg、30mg/kg又は100mg/kgで、VEGF硝子体内注射の1時間前、4時間後及び20時間後に経口投与した(化合物A投与群)。基剤投与群には、1%(w/v)メチルセルロース水溶液を上記化合物A投与群と同容量で、VEGF硝子体内注射の1時間前、4時間後及び20時間後に経口投与した。
VEGF硝子体内注射24時間後に、ラットを安楽死させた後、ラットの眼球を血液が混入しないように摘出した。眼球摘出後、視神経乳頭付近を手術用メスで小さく切開し、速やかに硝子体を摘出した。採取した硝子体中蛋白質濃度をBradford法で測定した。
網膜血管透過性増加抑制率は、下記式Xに従い、算出した。
[式X]
網膜血管透過性増加抑制率(%)=(PB−PX)/(PB−PA)×100
PA:正常対照群の硝子体中蛋白質濃度
PB:基剤投与群の硝子体中蛋白質濃度
PX:化合物A投与群の硝子体中蛋白質濃度
化合物Aの評価結果を図1に示した。
実験動物は、8週齢の雄性Brown Norwayラット(日本チャールス・リバー株式会社)を用いた。
ラットVEGF164(400ng/eye、R&D Systems社)と、基剤で溶解または懸濁させた化合物A(10μg/eye、30μg/eye又は100μg/eye)の混合液をラット両眼の硝子体内に注射した(化合物A投与群)。基剤投与群のラット両眼の硝子体内には、ラットVEGF164と上記化合物A投与群と同容量の基剤との混合液を注射した。基剤には水性の基剤を使用した。正常対照群のラット両眼の硝子体に、D−PBS(−)(SIGMA社)を注射した。各群の例数は4匹(8眼)であった。
VEGF硝子体内注射24時間後に、ラットを安楽死させた後、ラットの眼球を血液が混入しないように摘出した。眼球摘出後、視神経乳頭付近を手術用メスで小さく切開し、速やかに硝子体を摘出した。採取した硝子体中蛋白質濃度をBradford法で測定した。網膜血管透過性増加抑制率は、下記式Xに従い、算出した。
[式X]
網膜血管透過性増加抑制率(%)=(PB−PX)/(PB−PA)×100
PA:正常対照群の硝子体中蛋白質濃度
PB:基剤投与群の硝子体中蛋白質濃度
PX:化合物A投与群の硝子体中蛋白質濃度
化合物Aの評価結果を図2に示した。
実験動物は、8週齢の雄性Crl:CD(SD)ラット(日本チャールス・リバー株式会社)を用いた。
1%(w/v)メチルセルロース水溶液に懸濁した化合物Aを100mg/kgで、ラットに経口投与した。経口投与から0.5、1、2、4、6及び24時間後に血漿及び神経網膜を採取し、液体クロマトグラフィー質量分析法(LC−MS法)で化合物Aの血漿中及び神経網膜中濃度を定量した。
ラット両眼の硝子体内に、基剤で溶解または懸濁させた化合物Aをそれぞれ10μg/eyeで注射した。硝子体内注射から1、2、4及び24時間後に神経網膜を採取し、LC−MS法で化合物Aの神経網膜中濃度を定量した。各群の例数は2〜3匹(4〜6眼)であった。
経口投与(100mg/kg)した化合物Aの血漿中濃度推移を表1に、経口投与(100mg/kg)した化合物Aの神経網膜中濃度推移を表2に、硝子体内注射(10μg/eye)した化合物Aの神経網膜中濃度推移を表3に示した。
Claims (16)
- 加齢黄斑変性が滲出型加齢黄斑変性である、請求項1に記載の治療剤又は予防剤。
- 黄斑浮腫が糖尿病黄斑浮腫又は網膜静脈分枝閉塞症に伴う黄斑浮腫である、請求項1に記載の治療剤又は予防剤。
- 網膜静脈閉塞症が網膜中心静脈閉塞症である、請求項1に記載の治療剤又は予防剤。
- 治療剤又は予防剤が経口投与される、請求項1に記載の治療剤又は予防剤。
- 治療剤又は予防剤が眼に投与される、請求項1に記載の治療剤又は予防剤。
- 投与部位が硝子体である、請求項6に記載の治療剤又は予防剤。
- 剤形が注射剤である、請求項6又は7に記載の治療剤又は予防剤。
- 加齢黄斑変性が滲出型加齢黄斑変性である、請求項9に記載の治療剤又は予防剤。
- 黄斑浮腫が糖尿病黄斑浮腫又は網膜静脈分枝閉塞症に伴う黄斑浮腫である、請求項9に記載の治療剤又は予防剤。
- 網膜静脈閉塞症が網膜中心静脈閉塞症である、請求項9に記載の治療剤又は予防剤。
- 治療剤又は予防剤が経口投与される、請求項9に記載の治療剤又は予防剤。
- 治療剤又は予防剤が眼に投与される、請求項9に記載の治療剤又は予防剤。
- 投与部位が硝子体である、請求項14に記載の治療剤又は予防剤。
- 剤形が注射剤である、請求項14又は15に記載の治療剤又は予防剤。
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US20240041883A1 (en) | 2024-02-08 |
EP3061455A4 (en) | 2017-04-05 |
EP3061455A1 (en) | 2016-08-31 |
WO2015060208A1 (ja) | 2015-04-30 |
EP3061455B1 (en) | 2018-11-28 |
KR20160065979A (ko) | 2016-06-09 |
CN105636590B (zh) | 2019-01-01 |
CN105636590A (zh) | 2016-06-01 |
US20160367556A1 (en) | 2016-12-22 |
MY176525A (en) | 2020-08-13 |
JPWO2015060208A1 (ja) | 2017-03-09 |
KR102306276B1 (ko) | 2021-09-30 |
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