Takeda Pharmaceutical Company Limited

Shigeo Yanai

Naoyuki Murata

The present disclosure provides a safer novel opening system with highly broad utility for a blood-brain barrier (BBB), the opening system containing a combination of (1) nano-bubble water or nano-bubble aqueous solution containing nano-bubbles having an average diameter of not more than 200 nm, and (2) an ultrasound generating apparatus; a method for opening a BBB, including using the nano-bubble water or nano-bubble aqueous solution, and an ultrasound; and a method for increasing BBB permeability of a drug, including using the nano-bubble water or nano-bubble aqueous solution, and an ultrasound.

Drug administration method

A method of producing crystal of a poorly water-soluble pharmaceutical compound, including mixing a solution of a poorly water-soluble pharmaceutical compound in a good solvent and nanobubble water or an aqueous nanobubble solution to precipitate crystal of the poorly water-soluble pharmaceutical compound. The crystal of a poorly water-soluble pharmaceutical compound obtained by the method is microparticulate and has more uniform particle size distribution, and is superior in the absorbability and sustainability.

Growing community of inventors

Osaka, Japan

Shigeo Yanai