The invention discloses a glucose sensitive
controlled release microballoon composition and a preparation method thereof. The
medicine for treating the diabetes, the
glucose oxidase (GOD) and the
catalase (POD) are embedded in the microballoon. By taking the
insulin as an example, when the in-vivo glucose concentration is raised, the glucose can be diffused to the surface of the microballoon and is oxidized by the GOD in the microballoon to form the
gluconic acid, the pH value in the environment is reduced to about 3-5, the microballoon degradation and
corrosion speed is rapidly increased and the
insulin release speed is quickened; when the
blood sugar concentration is controlled, the PH value is recovered to the physiological PH value of about 7.4, the microballoon degradation speed is reduced and the
insulin release speed is slowed. When the
blood sugar is raised again, the release behavior is repeated, the insulin presents a glucose-sensitive self-regulating release behavior, the POD can perform
catalytic decomposition on the
hydrogen peroxide to generate
oxygen, the
oxygen consumed in the microballoon GOD
enzyme reaction is compensated and the
enzyme active
utilization rate is increased. The glucose sensitive
controlled release microballoon composition can be used for solving the problem that the
traditional medicine for treating the diabetes cannot perform self regulation to release the diabetes treating
medicine according to the in-vivo
blood sugar change.