LICENSING AND CONTRACT RESEARCH

 

ONCOBRITEâ

 

In Vivo GFP Imaging

 

FIELD:

 

US: 6,232,523; 6,235,967; 6,759,038; 6,235,968; 6,251,384; 6,649,159; 6,905,831

Europe: 0979298; 1156833; 1294906

Japan: 3,709,343; 4,021,197

China: 03823937X

Germany: 60137501708

Korea: 10-868200

Australia: 749,338; 2003272221; 2001249297

Canada: 2,289,283; 2,358,439

Numerous worldwide patents pending

FluorVivo Imaging System

UVP iBOX

 

MetaMouseâ- ANGIOMOUSEâ

 

US: 5,491,284; 5,569,812 Reissue RE:39,337

Japan: 2,664,261

Europe: 0437488

 

HDRAâ 

HISTOCULTURE DRUG RESPONSE ASSAY

 

US: 5,424,909; 5,474,909; 5,726,009; 7,252,941

Europe: 714,448; 1,567,672

Japan: 4,336,654

China: ZL200380108676.2

 

DERMATEKâ 

 

US:  5,641,508; 5,646,508; 5,753,263; 5,830,177; 5,849,579; 5,914,126; 5,965,157; 6,080,127; 6,224,901; 6,261,596; 6,399,380; 6,733,776; 6,844,326; 7,556,825; 7,666,675

Japan: 2,950,519; 2,950,520; 3,978,179

China: ZL02823052.3

Europe: 573,606; 692,972

South Korea: 10-973424

Canada: 2,159,626

Australia: 2002336742, 731,559

 

ENZYMATIC Homocysteine Assay 

 

TECHNICAL BULLETIN FEATURES          

 

 

PRINCIPLE OF THE TOTAL ENZYMATIC HOMOCYSTEINE ASSAY

In the Enzymatic Homocysteine Assay, protein-bound tHcy is first reduced to free Hcy. Genetically-engineered recombinant homocysteinase (rHCYase) then reacts with the free Hcy to form hydrogen sulfide (H2S), ammonia, and a-ketobutyrate:

 

          

 tHcy  ------------->  a-ketobutyrate + NH4 + H2S

             rHCYase

 

H2S then reacts with a proprietary fluorophore to give a fluorescence or absorption change.  For fluorescence, the excitation wavelength is 665 nm and the emission is at 690 nm.  Absorbance can be read between 660 and 680 nm.  The test is linear from 1 mM to 50 mM.  The Enzymatic Homocysteine Assay has been specifically optimized to minimize any cross reactivity with cysteine and methionine.

 

 

AVAILABILITY

 

The Enzymatic Homocysteine Assay has 510 (k) FDA clearance for the Hitachi 912. Kits are now available. Contact Li Tang, Business Development Manager, at all@anticancer.com

 

SPECIMEN COLLECTION AND  PREPARATION

 

 

EDTA-plasma is recommended for homocysteine determination. Storage should be at 4°C for short periods.  For longer storage, samples should be kept frozen at -20°C or kept in 3-deazaadenosine.  Overnight fasting is recommended before blood is drawn.  Standardized sampling procedures are crucial.

 

 

ENZYMATIC HOMOCYSTEINE ASSAY PATENTS

US: 5,985,540; 5,998,191; 6,066,467; 6,140,102; 6,448,446; 6,468,762; 6,713,273

Japan: 3,337,693

Europe: 1,000,170, 1,265,846; 1,250,448

Australia: 758729; 2001229460

South Korea: 10-0682292

China: ZL98807531.8