K. Takezawa

Simultaneous automatic determination of catecholamines and their 3-O-methyl metabolites in rat plasma by high-performance liquid chromatography using peroxyoxalate chemiluminescence reaction.

T. Santa, K. Imai, M. Tsunoda, 1999, Analytical biochemistry.

Attenuation of methylation of catecholamines and treatment with a coenzyme of catechol-O-methyltransferase in Spontaneously Hypertensive Rats (SHR)

T. Santa, K. Imai, M. Tsunoda, 1999 .

A method for the measurement of catechol-O-methyltransferase activity using norepinephrine, an endogenous substrate.

K. Imai, M. Tsunoda, K. Takezawa, 2001, The Analyst.

Automatic semi-microcolumn liquid chromatographic determination of catecholamines in rat plasma utilizing peroxyoxalate chemiluminescence reaction.

T. Santa, K. Imai, M. Tsunoda, 2000, The Analyst.

Rat liver and kidney catechol-O-methyltransferase activity measured by high-performance liquid chromatography with fluorescence detection.

K. Imai, M. Tsunoda, Mayumi Masuda, 2002, Biomedical chromatography : BMC.

Synthesis and characterization of stable polymer-coated C8 stationary phase with high durability under extreme pH conditions for high-performance liquid chromatography.

H. Takasaki, K. Takezawa, T. Kanda, 2005, Journal of chromatography. A.

An automatic analyzer for catecholamines and their 3-O-methyl metabolites using a micro coulometric flow cell as a postcolumn reactor for fluorogenic reaction.

K. Imai, M. Tsunoda, K. Takezawa, 2000, Analytical chemistry.