Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Particulate form
Patent
1994-07-05
1996-07-09
Nutter, Nathan M.
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Particulate form
424 854, 424484, 514 2, 514 21, 514964, A61K 914
Patent
active
055342698
ABSTRACT:
A method of producing a sustained-release preparation which includes permitting a water-soluble polypeptide to permeate into a biodegradable matrix in the aqueous solution. The production method of the present invention makes possible the permeation of a water-soluble polypeptide into a biodegradable matrix without bringing the water-soluble polypeptide into contact with an organic solvent. Hence the water-soluble polypeptide is prepared without affecting the water-soluble polypeptide bioactivity and is thus effective for use as a pharmaceutical.
REFERENCES:
patent: 4962091 (1990-10-01), Eppstein et al.
A. Supersaxo et al., "Preformed porous microspheres for controlled and pulsed release of macro-molecules", Journal of Controlled Release, vol. 23, (1993), pp. 157-164.
Igari Yasutaka
Okamoto Kayoko
Yamagata Yutaka
Yamamoto Kazumichi
Nutter Nathan M.
Takeda Chemical Industries Ltd.
Truong Duc
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