PMID- 24967547 OWN - NLM STAT- MEDLINE DCOM- 20150414 LR - 20140806 IS - 1873-4367 (Electronic) IS - 0927-7765 (Linking) VI - 121 DP - 2014 Sep 1 TI - Model carcinogen adsorption dynamics of DNA gel. PG - 122-8 LID - S0927-7765(14)00283-5 [pii] LID - 10.1016/j.colsurfb.2014.05.039 [doi] AB - We have derived theoretical equations describing the adsorption of carcinogen to gels in an immersion medium containing carcinogens. The theory was developed for a cylindrical boundary condition under the assumption of a carcinogen diffusion-limited process combined with the "moving boundary picture (Furusawa et al., 2007)". The time course of the adsorbed carcinogen layer thickness and that of the carcinogen concentration in an immersion medium were expressed by a set of scaled variables, and the asymptotic behavior in the initial stage was derived. Experiments based on the theory were performed using a DNA gel sandwiched between a set of coverglasses in a medium containing acridine orange (AO). The boundary between the AO-adsorbed gel layer and AO-nonadsorbed gel layer was traced during the immersion. The time courses of the AO-adsorbed gel layer thickness and the AO concentration in the immersion medium were well explained by the theory, and the number ratio of the total AO molecules to the adsorption sites in the DNA gel was determined. CI - Copyright (c) 2014 Elsevier B.V. All rights reserved. FAU - Tomita, Naoko AU - Tomita N AD - Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Tenjin-cho, Kiryu, Gunma 376-8515, Japan. FAU - Naito, Daisuke AU - Naito D AD - Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Tenjin-cho, Kiryu, Gunma 376-8515, Japan. FAU - Rokugawa, Isamu AU - Rokugawa I AD - Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Tenjin-cho, Kiryu, Gunma 376-8515, Japan. FAU - Yamamoto, Takao AU - Yamamoto T AD - Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Tenjin-cho, Kiryu, Gunma 376-8515, Japan. FAU - Dobashi, Toshiaki AU - Dobashi T AD - Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Tenjin-cho, Kiryu, Gunma 376-8515, Japan. Electronic address: dobashi@gunma-u.ac.jp. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140605 PL - Netherlands TA - Colloids Surf B Biointerfaces JT - Colloids and surfaces. B, Biointerfaces JID - 9315133 RN - 0 (Carcinogens) RN - 0 (Gels) RN - 0 (Solutions) RN - 9007-49-2 (DNA) RN - F30N4O6XVV (Acridine Orange) SB - IM MH - Acridine Orange/*chemistry MH - Adsorption MH - Animals MH - Carcinogens/*chemistry MH - DNA/*chemistry MH - Gels/*chemistry MH - Salmon MH - Solutions MH - Time Factors OTO - NOTNLM OT - Adsorption OT - DNA OT - Dynamics OT - Gel OT - Model carcinogen EDAT- 2014/06/27 06:00 MHDA- 2015/04/15 06:00 CRDT- 2014/06/27 06:00 PHST- 2014/01/11 00:00 [received] PHST- 2014/05/25 00:00 [revised] PHST- 2014/05/28 00:00 [accepted] PHST- 2014/06/27 06:00 [entrez] PHST- 2014/06/27 06:00 [pubmed] PHST- 2015/04/15 06:00 [medline] AID - S0927-7765(14)00283-5 [pii] AID - 10.1016/j.colsurfb.2014.05.039 [doi] PST - ppublish SO - Colloids Surf B Biointerfaces. 2014 Sep 1;121:122-8. doi: 10.1016/j.colsurfb.2014.05.039. Epub 2014 Jun 5.