Fujimori Kogyo Co., Ltd.

Chisso Corporation

Tomoko Wada

Kazuya Hosokawa

Hisayo Kaneko

Takao Sato

Takaaki Hasegawa

Yasuto Ishikawa

Tomoka Nagasato

Masashi Fukasawa

Taro Kondo

Maki Terada

A method for analyzing thrombogenic capacity or blood coagulation capacity, the method comprising adding calcium, a blood coagulation factor XII (FXII) inhibitor, and a kallikrein inhibitor to blood collected with a blood collection tube containing sodium citrate, to allow initiation of blood coagulation reaction, is provided. Preferably, heparin, heparan sulfate, and tissue factor are further added to the blood, and thrombogenic capacity or blood coagulation capacity is analyzed.

Blood collection tube, reagent, and method for analyzing blood characteristics using same

The present invention addresses a problem in which, when examining blood properties in measurements of thrombus formation capacity and platelet function or the like, measurement data is changed as a result of sedimentation of blood in reservoirs during measurement. An erythrocyte membrane ion transport inhibitor, such as disodium 4,4'-dinitrostilbene-2,2&#x2032;-disulfonate (DNDS) or 4,4&#x2032;-diisothiocyanatostilbene-2,2&#x2032;-disulfonic acid (DIDS), is used to inhibit erythrocyte sedimentation, and accurate measurement data is obtained.

Erythrocyte sedimentation inhibitor

A microchip for testing a blood property, comprising first and second channels for allowing a blood sample(s) to flow inside, wherein the first channel has a first reaction section coated with collagen and tissue thromboplastin; and said second channel has a second reaction section, wherein the second section has been coated with collagen and tissue thromboplastin the amount of which is equivalent to or smaller than the amount of tissue thromboplastin on said first channel, or the second section has been coated with collagen but not with tissue thromboplastin.

Microchip for assay of blood properties, and device for assay of blood properties

Blood observation device

A microchip for measuring platelet function by allowing blood to flow through a channel to induce platelet aggregation, wherein the microchip has a channel provided inside thereof, wherein at least a part of the channel is coated with collagen for allowing adhesion of platelets; a plurality of walls extend along the direction of the flow of blood in the channel and divide the width of the channel to form a channel dividing section; and the walls are treated to have a surface roughness (Ra) of 10 to 200 nm.

Microchip for platelet examination and platelet examination device using same

A microchip comprising therein a first channel which allows inflow of a first liquid selected from whole blood, platelet-rich plasma and a drug-treated liquid thereof, a second channel connected to the first channel, which allows inflow of a second liquid containing an agent that is reactive with the first liquid, and a merged channel extended from the connection portion of the first channel with the second channel, wherein, in the merged channel, a stirring section having a stirring bar for mixing the first liquid with the second liquid is provided; and a blood monitoring device using the same.

Microchip and blood monitoring device

A thrombin mutant in which at least serine at position 205 among amino acids in the active center of the thrombin B chain has been replaced with another amino acid, and further at least one of the following replacements have been introduced: (I) replacement of arginine at position 89 in the B-chain with another amino acid; (II) replacement of threonine at position 69 or serine at position 22 in the B-chain with another amino acid; (III) replacement of alanine at position 200 in the B-chain with another amino acid; and (IV) replacement of lysine at position 65 in the B-chain with threonine.

Growing community of inventors

Tokyo, Japan

Tomoko Wada