PMID- 12505774 OWN - NLM STAT- MEDLINE DCOM- 20030731 LR - 20190922 IS - 1570-0232 (Print) IS - 1570-0232 (Linking) VI - 784 IP - 2 DP - 2003 Feb 5 TI - Method for monitoring alginate released in biological fluids by high-performance anion-exchange chromatography with pulsed amperometric detection. PG - 265-74 AB - The use of alginate-entrapped cells in cell therapy requires a method for monitoring possible released compound within biological fluids following either their implantation or inoculation in artificial organs. Oligomannuronic and oligoguluronic acids were prepared by enzymatic depolymerization with alginate lyase from Pseudomonas alginovora, characterized by high-performance anion-exchange chromatography with pulsed amperometric detection and quantitated in human, pig and rabbit blood, urine and tissue samples. The method was tested for linearity and detection limit, accuracy, intra- and inter-day precision. The limit of detection was 3 microgram/ml in both urine and plasma and 5 mg/g of tissues. The relative standard deviations (RSDs) of intra-day precision were 6.0-16.6% and 4.8-8.7% in plasma and urine, respectively; the RSDs of inter-day precision were 5.1-14.4% and 5.0-11.6% in plasma and urine, respectively. Thus, this method appears suitable for the measurement of released alginate from entrapped cells used in cell therapy. FAU - Desille, Mireille AU - Desille M AD - INSERM U456-Detoxication et Reparation Tissulaire, Universite de Rennes I, Rennes, France. FAU - Allain, Nathalie AU - Allain N FAU - Anger, Jean Pierre AU - Anger JP FAU - Mahler, Stephan AU - Mahler S FAU - Lognone, Vincent AU - Lognone V FAU - Malledant, Yannick AU - Malledant Y FAU - Clement, Bruno AU - Clement B LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - J Chromatogr B Analyt Technol Biomed Life Sci JT - Journal of chromatography. B, Analytical technologies in the biomedical and life sciences JID - 101139554 RN - 0 (Alginates) RN - 0 (Hexuronic Acids) RN - 8A5D83Q4RW (Glucuronic Acid) SB - IM MH - Alginates/*analysis/pharmacokinetics MH - Animals MH - Biological Availability MH - Chromatography, High Pressure Liquid/*methods MH - Chromatography, Ion Exchange/*methods MH - Electrochemistry/*methods MH - Glucuronic Acid MH - Hexuronic Acids MH - Rabbits MH - Sensitivity and Specificity EDAT- 2002/12/31 04:00 MHDA- 2003/08/02 05:00 CRDT- 2002/12/31 04:00 PHST- 2002/12/31 04:00 [pubmed] PHST- 2003/08/02 05:00 [medline] PHST- 2002/12/31 04:00 [entrez] AID - S1570023202008012 [pii] AID - 10.1016/s1570-0232(02)00801-2 [doi] PST - ppublish SO - J Chromatogr B Analyt Technol Biomed Life Sci. 2003 Feb 5;784(2):265-74. doi: 10.1016/s1570-0232(02)00801-2.