- 著者
- Ji-hoon Kim Chung-Oui Hong Yun-chang Koo Hee-Don Choi Kwang-Won Lee
- 出版者
- 公益社団法人日本薬学会
- 雑誌
- Biological and Pharmaceutical Bulletin (ISSN:09186158)
- 巻号頁・発行日
- vol.35, no.2, pp.260-264, 2012-02-01 (Released:2012-02-01)
- 参考文献数
- 30
- 被引用文献数
- 8 37
Gold nanoparticles (GNPs) have been reported to exhibit a variety of biological effects including anti-inflammatory and anti-oxidant activities. The extent of an in vitro glycation reaction mixture of collagen and glycolaldehyde was assayed to investigate the inhibition of glycolaldehye-derived advanced glycation end products (glycol-AGEs) formation with GNPs in collagen, which is a major protein component of the human dermis. GNP-treated collagen showed significantly less glycation (56.3±4.2%) than an untreated glycation control. Moreover, GNP-treated glycation in a collagen lattice model significantly decreased the AGEs distribution in the model system. Taken together, these results suggest that GNPs have the potential for use in the prevention of glycation-induced skin aging.
- 著者
- Ji-young Lee Jun-Gu Oh Jin Sook Kim Kwang-Won Lee
- 出版者
- 公益社団法人日本薬学会
- 雑誌
- Biological and Pharmaceutical Bulletin (ISSN:09186158)
- 巻号頁・発行日
- vol.37, no.7, pp.1162-1167, 2014-07-01 (Released:2014-07-01)
- 参考文献数
- 24
- 被引用文献数
- 1 14
Advanced glycation end-products (AGEs) have been implicated in the development of diabetic complications. We report the antiglycating activity of chebulic acid (CA), isolated from Terminalia chebula on breaking the cross-links of proteins induced by AGEs and inhibiting the formation of AGEs. Aminoguanidine (AG) reduced 50% of glycated bovine serum albumin (BSA) with glycolaldehyde (glycol-BSA)-induced cross-links of collagen at a concentration of 67.8±2.5 mM, the level of CA required for exerting a similar antiglycating activity was 38.8±0.5 µM. Also, the breaking activity on collagen cross-links induced by glycol-BSA was potent with CA (IC50=1.46±0.05 mM), exhibiting 50-fold stronger breaking activity than with ALT-711, a well-known cross-link breaker (IC50=72.2±2.4 mM). IC50 values of DPPH· scavenging activity for CA and ascorbic acid (AA) were 39.2±4.9 and 19.0±1.2 µg dry matter (DM) mL−1, respectively, and ferric reducing and antioxidant power (FRAP) activities for CA and AA were 4.70±0.06 and 11.4±0.1 mmol/FeSO4·7H2O/g DM, respectively. The chelating activities of CA, AG and ALT711 on copper-catalyzed oxidation of AA were compared, and in increasing order, ALT-711 (IC50 of 1.92±0.20 mM)<CA (IC50 of 0.96±0.07 mM)<AG (0.47±0.05 mM). Thus, CA could be a breaker as well as an inhibitor of AGE cross-linking, the activity of which may be explained in large part by its chelating and antioxidant activities, suggesting that CA may constitute a promising antiglycating candidate in intervening AGE-mediated diabetic complications.