[Protective effect of haliotidis on the oxidative damage in the human lens epithelial cells]

To study the influence of haliotidis extractive on the oxidative damage in the human lens epithelial cells cultured in vitro.

Experimental study. Cultured human lens epithelial cells in vitro were intervened with hydrogen peroxide caused oxidative damage model, at the same time added different concentrations of concha haliotidis extractive. With control experiment research cells were divided into the blank control group, positive control group hydrogen peroxide group and hydrogen peroxide and different concentrations of concha haliotidis group, and on the first, third, fifth day the activity of Cultured human lens epithelial cells were detected with Cell Counting Kit-8 (CCK-8) , cellular proliferation and morphological changes were observed with interred phase contrast microscope, and then on the third day chemical colorimetric were used to detect the homogenates superoxide dismutase(SOD), glutathione(GSH) and malondialdehyde (MDA) level.

(1) At different time points there were variations between the activity of HLEC in each experimental group, Among each experimental group HLEC OD value of the cell vitality at 1 d, 3 d, 5 d , respectively were blank control group: 0.88, 1.28, 1.32; Positive control group: 0.73, 1.02, 1.06; 0.001% concha haliotis extract group: 0.73, 1.03, 1.06; 0.01% concha haliotis extract group: 0.76, 1.10, 1.13; 0.1% concha haliotis extract group: 0.79, 1.22, 1.21; 0.3% concha haliotis extract group: 0.79, 1.21, 1.21; the difference between groups was statistically significant (P < 0.05) (1 d, F = 23 922.42, P < 0.05;3 d, F = 120 605.86, P < 0.05; 5 d, F = 150 939.45, P < 0.05). H2O2 made the vitality of the cells reduce, concha haliotidis enhance its vitality, and in a certain range of time and concentrations there was dependence, with which the third day and 0.1% was the best. (2) After adding H2O2, the SOD and GSH level of HLEC reduced,(SOD 158.05 U/mgprot,GSH 15.05 mg/gprot) but MDA increased to 18.11 nmol/mgprot, concha haliotidis groups made the increase of antioxidant level(SOD 188.64 U/mgprot,GSH 21.05 mg/1000 mgprot)and the decrease of lipid peroxidation in oxidative damaged HLECs(MDA 14.16 nmol/mgprot), change had a statistical significance(P < 0.05) (SOD: F = 983.04, P < 0.05; GSH: F = 444.44, P < 0.05; MDA: F = 830.52, P < 0.05). (3)The chromatin of the positive control group concentrated and aggregated obviously, the aggregation of chromatin in concha haliotidis group lightened.

The concha haliotidis can protect the cultured human lens epithelial cells in vitro which are oxidative injured, increased intracellular antioxidant levels, reduce the generation of hazardous products.