JP5140586B2 - 滅菌パンクレアチン粉末の製法 - Google Patents
滅菌パンクレアチン粉末の製法 Download PDFInfo
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- JP5140586B2 JP5140586B2 JP2008523364A JP2008523364A JP5140586B2 JP 5140586 B2 JP5140586 B2 JP 5140586B2 JP 2008523364 A JP2008523364 A JP 2008523364A JP 2008523364 A JP2008523364 A JP 2008523364A JP 5140586 B2 JP5140586 B2 JP 5140586B2
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- pancreatin
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Images
Classifications
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- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K38/00—Medicinal preparations containing peptides
- A61K38/16—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- A61K38/43—Enzymes; Proenzymes; Derivatives thereof
- A61K38/46—Hydrolases (3)
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/94—Pancreatin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K35/00—Medicinal preparations containing materials or reaction products thereof with undetermined constitution
- A61K35/12—Materials from mammals; Compositions comprising non-specified tissues or cells; Compositions comprising non-embryonic stem cells; Genetically modified cells
- A61K35/37—Digestive system
- A61K35/39—Pancreas; Islets of Langerhans
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Description
図1:溶剤含量1%でパンクレアチンを80℃、85℃、90℃、95℃及び100℃の温度で加熱実験後のリパーゼ活性。リパーゼ活性は2、4、6、12、15、18、21、24及び30時間後に測定した。
次に実施例に付き本発明を詳説するが、本発明はこれに限定するものではない。その他の好適な変形及び変更は、当業者が通常経験するものであり、請求の範囲に記載されている発明の精神及び範囲内である。
リパーゼ活性の測定は、Ph.Eur.(Pancreas Powder、European Pharmacopoeia 5.0、2179−2182;01/2005:0350)中の膵臓粉末の専門論文に準拠するSolvay試験法により行った。
本明細書に記載の水に関する溶剤含量は、FDAにより容認された修正カールフィッシャー法(Meyer and Boyd、Analytical Chem.、31:215−219、1959;May、その他、J.Biol. Standardization、10:249−259、1982;Centers for Biologics Evaluation and Research、FDA、Docket No.89D−0140、83−93;1990)により測定したレベルに関する。その他の溶剤の含量の定量は、どの溶剤を使用するかに応じて当業者に公知の方法により測定することができる。更に、これも本発明の開示に含まれるが、本明細書に開示した方法の間又はその後のパンクレアチン中の溶剤含量を測定するために好適なその他の方法は、例えば、熱重量分析(赤外線乾燥及びマイクロ波乾燥を含む)、分光法(赤外線スペクトロスコピー、マイクロ波スペクトロスコピー及び核磁気共鳴スペクトロスコピーを含む)、伝導度分析法、デカメートル法又は熱伝導である。通常、パンクレアチン中の溶剤含量を測定するための有利な方法は熱重量分析(例えば"乾燥時損失"の測定)である。それはこの方法が例えば水及び酵素親和性有機溶剤、例えばイソプロパノールを含むパンクレアチン中に存在しうる全ての液体をカバーしうるからである。熱重量分析は特にパンクレアチン中の9質量%−3.5質量%の溶剤含量を測定するために好適である。パンクレアチン中でこれより低い溶剤含量を測定すべきである場合には、例えば3.5%より低い溶剤含量、更に例えば3%より少ない、もっと更には1.6質量%より少ない溶剤含量を測定すべきである場合には、パンクレアチンの溶剤含量中に存在する水の割合はパンクレアチン中に存在する酵素親和性有機溶剤の割合より重い。従って、3.5%より低い溶剤含量、更に例えば3%より少ない、もっと更には1.6質量%より少ない溶剤含量はより鋭敏なKarl Fischer法又はその修正法を使用して測定するのが有利であろう。工業用のバッチの大きさ及び連続測定用には、特に3.5%より低い溶剤含量、更に例えば3%より少ない、もっと更には1.6質量%より少ない溶剤含量を測定すべきである場合、例えば予備加熱の加熱工程の定常状態では、溶剤含量の赤外線分光測定が有利である。当業者に公知である近赤外線スペクトロスコピー測定法(NIR)が有利である。赤外線スペクトロスコピー法は典型的にはカールフィッシャー水滴定法又はその修正法であってよい、レファレンス法に対して標準化する必要があろう。前記で概説したような理由でパンクレアチン中の全溶剤含量を測定する最も有利な方法は、熱重量分析法(即ちパンクレアチン中の乾燥に際しての損失の測定、特に比較的高い溶剤含量を有するパンクレアチン用)とカールフィッシャー法又はその修正法(即ちパンクレアチン中の残存水含量の測定、特に比較的低い溶剤含量を有するパンクレアチン用)の組合せである。
処理した試料内のウイルス滴定はウイルス終点滴定により測定し、Bundesanzeiger No.84、May4 1994に記載されているようにTCID50をSpearman−Kaerber式により算出した。ディテクターPk−13−細胞(ブタ腎臓)との不相溶性を回避するために、試験物質を各場合に滴定前に3対数力価(例えば1:20000)で希釈した。ウイルスを不活性化又は除去する処理能力は、対数減少率によって記載した。ある程度試験物質自体の特性に由来するであろう培養期間中の感染性の必須減少と無関係に、ウイルス力価の減少を評価することができるように、保持試料を採取した。試料の対数力価減少(LTR)を保持試料と終点試料間ののウイルス力価の差(log10 TCID50/ml)としてECガイドラインIII/8115/89−EN、付録II(現在のCPMP/BWP/268/95)により計算した。
実験室規模用に、加熱は乾燥炉(例えばMemmert社、ULE400)又は水浴(例えばBuechiB−480)付き回転蒸発器(例えばBuechi社、R−144)で行った。パイロット規模では、真空乾燥機(会社:Hosokawa、Vrieco−Nauta(R)、容量120L)を使用した。製造規模では真空乾燥機(会社:Hosokawa、Vrieco−Nauta(R)、容量4000L)を使用した。
湿ったパンクレアチン(最初の溶剤含量40〜50%)50kg〜1000kgを真空乾燥機中で連続的に攪拌しながら乾燥させた。温度を60℃から95℃に段階的に上昇させた。次いで乾燥を少なくとも70℃で<3.5%の溶剤含量に達するまで行った。各々6%、9%又は12質量%の溶剤含量のパンクレアチン粉末試料を得るために、試料を公知方法で乾燥工程の間に適切な早い時点で採取した。
(a)標準化したパンクレアチン粉末の実験室規模での製造用の更なる工程には下記が含まれる:下記実験の開始要求条件(下記例1から11)に応じて、所望温度で各々1質量%又は3質量%の溶剤含量に達するまで加熱すること。
(b)パイロット規模及び製造規模で標準化パンクレアチン粉末の製造用のその他の工程には下記が含まれる:下記実験の開始要求条件(下記例1から11)に応じて、所望温度で1質量%の溶剤含量及び80℃〜100℃の生成物温度に達するまで加熱すること。
科学及び薬理学界で一般に容認された原理に従って、原理の証明を確立するためにパンクレアチンを添加ブタパルボウイルスでスパイクした。スパイクはガイドラインCPMP/BWP/268/95に従って行った。
溶剤含量1%を有する標準化パンクレアチン48kgを次いで80℃に30時間加熱した。リパーゼ活性を0、2、4、6、12、15、18、21、24及び30時間後に測定した。この実験結果は第1表及び図1に記載する。
溶剤含量1%を有する標準化パンクレアチン48kgを次いで85℃に30時間加熱した。リパーゼ活性を0、6、12、15、18、21、24及び30時間後に測定した。この実験結果は第1表及び図1に記載する。
溶剤含量1%を有する標準化パンクレアチン48kgを次いで90℃に30時間加熱した。リパーゼ活性を0、6、12、15、18、21、24及び30時間後に測定した。この実験結果は第1表及び図1に記載する。
溶剤含量1%を有する標準化パンクレアチン48kgを次いで95℃に30時間加熱した。リパーゼ活性を0、6、12、15、18、21、24及び30時間後に測定した。この実験結果は第1表及び図1に記載する。
溶剤含量1%を有する標準化パンクレアチン48kgを次いで100℃に30時間加熱した。リパーゼ活性を0、6、12、15、18、21及び24時間後に測定した。この実験結果は第1表及び図1に記載する。
溶剤含量3%を有する標準化パンクレアチン1.5gを次いで90℃に48時間加熱した。リパーゼ活性を0、2、4、8、6、15、24及び48時間後に測定した。この実験結果は第2表及び図2に記載する。
溶剤含量3%を有する標準化パンクレアチン1.5gを次いで95℃に48時間加熱した。リパーゼ活性を0、2、4、8、6、15、24及び48時間後に測定した。この実験結果は第2表及び図2に記載する。
溶剤含量3%を有する標準化パンクレアチン1.5gを次いで80℃に3.0時間加熱した。リパーゼ活性を0.5、1.0及び3.0時間後に測定した。この実験結果は第3表及び図3に記載する。
溶剤含量6%を有する標準化パンクレアチン1.5gを次いで80℃に3.0時間加熱した。リパーゼ活性を0.5、1.0及び3.0時間後に測定した。この実験結果は第3表及び図3に記載する。
溶剤含量9%を有する標準化パンクレアチン1.5gを次いで80℃に3.0時間加熱した。リパーゼ活性を0.5、1.0及び3.0時間後に測定した。この実験結果は第3表及び図3に記載する。
溶剤含量12%を有する標準化パンクレアチン1.5gを次いで80℃に3.0時間加熱した。リパーゼ活性を0.5、1.0及び3.0時間後に測定した。この実験結果は第3表及び図3に記載する。
溶剤含量1%を有するブタパルボウイルス−スパイクしたパンクレアチン1.5gを次いで80℃に30時間加熱した。ウイルス濃度を6、12、15、18、21、24及び30時間後に測定した。この実験結果は第4及び5表並びに図4に記載する。
溶剤含量1%を有するブタパルボウイルス−スパイクしたパンクレアチン1.5gを次いで85℃に30時間加熱した。ウイルス濃度を6、12、15、18、21、24及び30時間後に測定した。この実験結果は第4、4a及び5表並びに図4に記載する。
溶剤含量1%を有するブタパルボウイルス−スパイクしたパンクレアチン1.5gを次いで90℃に30時間加熱した。ウイルス濃度を6、12、15、18、21、24及び30時間後に測定した。この実験結果は第4及び5表並びに図4に記載する。
溶剤含量1%を有するブタパルボウイルス−スパイクしたパンクレアチン1.5gを次いで95℃に30時間加熱した。ウイルス濃度を6、12、15、18、21、24及び30時間後に測定した。この実験結果は第4及び5表並びに図4に記載する。
溶剤含量1%を有するブタパルボウイルス−スパイクしたパンクレアチン1.5gを次いで100℃に30時間加熱した。ウイルス濃度を6、12、15、18、21、24及び30時間後に測定した。この実験結果は第4及び5表並びに図4に記載する。
溶剤含量1%を有するブタパルボウイルス−スパイクしたパンクレアチン1.5gを次いで90℃に12時間加熱した。ウイルス濃度を3、6及び12時間後に測定した。この実験結果は第6及び7表並びに図5に記載する。
溶剤含量3%を有するブタパルボウイルス−スパイクしたパンクレアチン1.5gを次いで90℃に12時間加熱した。ウイルス濃度を3、6及び12時間後に測定した。この実験結果は第6及び7表並びに図5に記載する。
溶剤含量1%を有するブタパルボウイルス−スパイクしたパンクレアチン1.5gを次いで95℃に12時間加熱した。ウイルス濃度を3、6及び12時間後に測定した。この実験結果は第6及び7表並びに図5に記載する。
溶剤含量3%を有するブタパルボウイルス−スパイクしたパンクレアチン1.5gを次いで95℃に12時間加熱した。ウイルス濃度を3、6及び12時間後に測定した。この実験結果は第6及び7表並びに図5に記載する。
本明細書に記載の方法により得たパンクレアチンから成る組成物は、下記のようにして得られる:例2の方法により得たパンクレアチン10kgをエチレングリコール4000 2.5kg及びプロパン−2−オール1.5kgと混合して混合物にし、次いで公知方法で押出成形機で押出成形した。パンクレアチンマイクロペレットはEP0583726に記載したようにして製造し、更にカプセル又はサシェに詰めることができる。
例21により得たパンクレアチンマイクロペレットコアに耐胃酸コーティングを施すことができる。例えばパンクレアチンマイクロペレットコアを耐胃酸被膜形成剤、例えばヒドロキシプロピルメチルセルロースアセテートスクシネート(=HPMCAS)、ヒドロキシプロピルメチルセルロースフタレート(=HPMCP)、セルロースアセテートフタレート(=CAP)又はポリビニルアセテートフタレート(=PVAP)でコーティングすることができる。被膜形成剤として公知のコポリマー、例えばメタクリル酸/メチルメタクリレートコポリマー又はメタクリル酸/エチルアクリレートコポリマーを使用することもできる。被膜形成剤をパンクレアチンマイクロペレットコアに、種々のフィルムコーティング機、例えばコーターを使用して通用の形、例えば有機溶液又は有機又は水性分散液として、場合により慣用の可塑剤を添加して、塗布することができる。得られる耐酸性フィルムコーティングしたパンクレアチンマイクロペレットは、例えば0.6g/ml〜0.85g/mlの範囲の高い嵩密度を特徴とし、それによってカプセル当たりの充填量、従って各カプセルの活性成分含量を増加させることができる。耐胃酸フィルムコーティングパンクレアチンマイクロペレットの製法に関する更なる実験に基づく詳細は、EP0583726に記載されている。
Claims (16)
- (a)1種以上の溶剤を含有するパンクレアチンの分散形を85℃〜100℃の温度に予備加熱する工程と、
(b)パンクレアチンの分散形の加熱を85℃〜100℃の温度で15〜30時間の間続け、方法工程(b)の間の任意の時点で3.5質量%以下のパンクレアチンの分散形中の全溶剤含分を得る工程とを含み、
その際、パンクレアチンの分散形を、粉末、ペレット、マイクロペレット、ミクロスフィア、粒剤及び顆粒から選択する、ウイルス汚染物質を減少するパンクレアチンの製法。 - 方法工程(b)で得られた溶剤含量が、0.1〜3.5質量%である、請求項1に記載の方法。
- 方法工程(a)の温度及び方法工程(b)の温度が両方とも85℃〜95℃である、請求項1に記載の方法。
- 方法工程(b)の加熱を連続的に行う、請求項1に記載の方法。
- 方法工程(b)の加熱を不連続的に行う、請求項1に記載の方法。
- 加熱後の分散したパンクレアチン中に存在する任意のウイルス汚染物質の力価レベルが加熱前の分散したパンクレアチン中に存在するそのウイルス汚染物質の力価レベルより少なくとも1000倍少ない、請求項1から5までのいずれか1項に記載の方法。
- 加熱の間のパンクレアチンの分散形中の得られた溶剤含量を、カールフィッシャー水滴定法又はカールフィッシャー水滴定法に対して標準化された赤外分光法により決定する、請求項1〜6に記載の方法。
- パンクレアチンの分散形が粉末である、請求項1に記載の方法。
- 加熱後のパンクレアチンリパーゼ活性が加熱前の少なくとも50%のリパーゼ活性である請求項1記載の方法。
- 請求項1〜9のいずれか1項に記載の方法により得られる、加熱後の分散したパンクレアチン中に存在する任意のウイルス汚染物質の力価レベルが加熱前の分散したパンクレアチン中に存在するそのウイルス汚染物質の力価レベルより少なくとも1000倍少ない、パンクレアチン。
- 薬理学的に有効量の請求項10に記載のパンクレアチン及び1種以上の製薬的に認容性の賦形剤を含む医薬組成物。
- パンクレアチンが、経口投与及び即時又は調整放出に好適な剤形であり、この剤形を錠剤、マイクロタブレット、ペレット、マイクロペレット、ミクロスフィア、粒剤、顆粒、粉末、懸濁液、乳剤、分散液、カプセル及びサシュから選択する、請求項11に記載の医薬組成物。
- パンクレアチンが耐胃酸コーティングでコーティングしてある剤形中に存在する、請求項12に記載の医薬組成物。
- カプセル又はサシェの形である、請求項12に記載の医薬組成物。
- 組成物が、経口投与及び即時又は調整放出に好適である剤形で存在する、請求項12又は13に記載の医薬組成物。
- 請求項11に記載の医薬組成物であって、
(a)請求項10に記載のパンクレアチン50〜90質量%と
(b)製薬的に認容性の賦形剤10〜50質量%と
を含む医薬組成物。
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