PMID- 18968760 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20130211 LR - 20190729 IS - 1873-3573 (Electronic) IS - 0039-9140 (Linking) VI - 58 IP - 2 DP - 2002 Aug 23 TI - Creatinine sensitive biosensor based on ISFETs and creatinine deiminase immobilised in BSA membrane. PG - 351-7 AB - A creatinine sensitive biosensor based on ion sensitive field-effect transistors (ISFETs) with immobilised creatinine deiminase (CD) is developed. CD is immobilised on the transducer surface by classical cross-linking with bovine serum albumin (BSA) in a glutaraldehyde (GA) vapour. The linear dynamic ranges of biosensors are between 0 and 5 mM creatinine concentration, and the sensor sensitivity depends on the sample buffer concentration. Minimal detection limit for creatinine determination in model solution with 144 mM NaCl and 5% BSA, pH 7.4, is about 10 muM. Biosensor responses are reproducible and stable during continuous work at least for 8 h, and the relative standard deviation of sensor response is approximately 3% (n=48, for creatinine concentrations of 0.2 and 0.6 mM). An investigation about storage stability of creatinine sensitive ENFETs kept in dry at 4-6 degrees C shows that biosensors demonstrate an excellent storage stability for at least 6 months and more. Moreover, creatinine sensitive enzymatic field-effect transistors (ENFETs), demonstrating very good performances, are very selective and specific and well suitable for hemodialysis monitoring. FAU - Soldatkin, Alexey P AU - Soldatkin AP AD - IFoS-UMR/CNRS 5621, Ecole Centrale de Lyon, 69131 36 Av. Guy de Collongue, F69134 Ecully, Cedex, France; Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, 150 Zabolotnogo St., Kiev 03143, Ukraine. FAU - Montoriol, Jean AU - Montoriol J FAU - Sant, William AU - Sant W FAU - Martelet, Claude AU - Martelet C FAU - Jaffrezic-Renault, Nicole AU - Jaffrezic-Renault N LA - eng PT - Journal Article PL - Netherlands TA - Talanta JT - Talanta JID - 2984816R EDAT- 2008/10/31 09:00 MHDA- 2008/10/31 09:01 CRDT- 2008/10/31 09:00 PHST- 2002/03/11 00:00 [received] PHST- 2002/05/17 00:00 [revised] PHST- 2002/05/21 00:00 [accepted] PHST- 2008/10/31 09:00 [pubmed] PHST- 2008/10/31 09:01 [medline] PHST- 2008/10/31 09:00 [entrez] AID - S0039-9140(02)00283-7 [pii] AID - 10.1016/s0039-9140(02)00283-7 [doi] PST - ppublish SO - Talanta. 2002 Aug 23;58(2):351-7. doi: 10.1016/s0039-9140(02)00283-7.