摘要:
[Object] To provide a drug that can mitigate shortcomings, such as low retention in blood, associated with L-DOPA in treating Parkinson's disease. [Solution] Incorporation of L-DOPA into a carrier in a form of a block copolymer (PEG-b-poly(3,4-hydroxy-protected L-DOPA)) significantly improves the retention of the agent in the blood.
摘要:
[Problem] To provide a composition capable of effectively preventing adhesion. [Solution] An adhesion-preventing preparation comprising, as an active ingredient, a composition comprising an A-B-A triblock copolymer, in which A denotes a cationically chargeable polymer block and B denotes a water-soluble block that comprises a poly(ethylene glycol) (or poly(oxyethylene)) chain, and a polyanionic polymer.
摘要:
[Problem] To provide a physiologically active peptide-loaded stable composition for injection into living bodies. [Solution] A composition containing a triblock copolymer represented by formula (I), a polyanionic polymer and a physiologically active peptide:
CNR-PEG-CNR (I)
in the formula, CNR moieties are each independently a polymer segment containing a repeating unit that contains, as a part of a pendant group, a cyclic nitroxide radical bonded to a main polymer chain via a linking group that contains at least one amino group, and PEG is a segment that contains poly(ethylene glycol).
摘要:
An object of the present invention is to provide an assembled body of ornithine low in toxicity, effective even in oral administration and high in bioavailability. Another object of the present invention is to provide an ornithine assembled body which is effective in preventing or treating hepatic disorders. Another object is to provide a condensate obtained by introducing an acyl group or the like into an ornithine side chain amino group of polyethylene glycol-b-polyornithine, and to provide a novel assembled body not based on PIC.
摘要:
An object of the present invention is to provide surface-modified ferromagnetic iron oxide particles suitable for electromagnetic-induction cancer ablation, which have excellent heat generation properties and also have excellent dispersion stability in a medium for injection. The surface-modified iron oxide particles for cancer ablation of the present invention as a means for achieving the object are characterized in that a block copolymer of polyethylene glycol and polystyrene having a phosphorous acid group in the side chain is bound to the surface of ferromagnetic iron oxide particles having a plate-like shape with a length of 20 to 200 nm and a length-to-thickness ratio of 1.5 to 30 and having magnetic properties such that the coercivity is 30 to 300 Oe, the saturation magnetization is 20 to 80 emu/g, and the squareness ratio of the magnetic hysteresis loop is 0.20 to 0.50.
摘要:
Provided is a valproic acid derivative for improving disadvantages or defects accompanying when valproic acid itself or the like is used as a medicine. Provided is a block copolymer which is a polymerized product of valproic acid and comprises a poly(ethylene glycol) segment and a poly(vinyl valproate) segment.
摘要:
[Problem] To provide a method for efficiently producing a poly(ethylene glycol)- b -poly(halomethylstyrene), a novel poly(ethylene glycol)- b -poly(halomethylstyrene) produced using the method, and a derivative thereof. [Solution] The target novel copolymer can be provided by introducing a functional group, which enables reversible addition-fragmentation chain transfer (RAFT) polymerization, to the ω terminal of poly(ethylene glycol) and copolymerizing the resulting poly(ethylene glycol) with a halomethylstyrene.
摘要:
Provided is a triblock copolymer represented by General Formula (1): €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒCNR-PEG-CNR€ƒ€ƒ€ƒ€ƒ€ƒ(1) or a polycation thereof, wherein each CNR is independently a polymer segment having a repeating unit containing as part of a pendant group a cyclic nitroxide radical that binds to the polymer main chain via a linking group having at least one imino group or ether bond, and PEG is a segment containing poly(ethylene glycol).