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Ординатура / Офтальмология / Английские материалы / Retinal Degenerative Diseases Laboratory and Therapeutic Investigations_Anderson_2008.pdf
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198

L. Xiaoting et al.

22.2.7 Statistical Analysis

Results are presented as mean ± SEM. The RPE cells viability (A value), NO level, IOD value of iNOS expressed in RPE cells were analyzed by one-way analysis of variance (ANOVA) using SPSS14.0 software. Difference was compared between the groups. When p <0.05, difference had remarkably statistical significance.

22.3 Results

22.3.1 Identification of Hesperidin by HPLC

The purity of hesperidin extracted from the Pericarpium Citri Reticulatae was 98.7% indentitified by HPLC.

22.3.2 RPE Cells Morphology

RPE cells in the control group were in the presence of applanation and polygon. Intracytoplasm of RPE cells had few pigment granules and the cell body was impellucidus. The RPE cells in the model group had multiple and irregular shapes. The cell body thinningzed in the model group compared with in the model group. Cellular shape of the RPE cells in the experimental groups was less obvious change than in the control group compared with in the model group.

22.3.3Influence of Hesperin on RPE Cell Proliferation Under the Condition of High Glucose

As shown in Table 22.1, A value in the model group (0.284 ± 0.004) was markedly lower than in the control group (0.456 ± 0.007). It indicated that the treatment of RPE cells with 33 mmol/L glucose caused an obviously decrease of cellular viability. After pretreated with hesperidin, cell viability was elevated compared with the model group (p <0.0001). The growth rate of RPE cells was associated with the concentration of hesperidin.

22.3.4 Assay of NO and iNOS

To determine the NO-blocking effect of hesperidin, we monitored nitrite levels in culture media after stimulating cells with high glucose in the presence or absence of hesperidin for 24 h. Nitrite concentrations in medium were increased by high glucose compared with control cells (Table 22.1), and had remarkably statistical significance (p < 0.0001). This NO production induced by high glucose was significantly inhibited by hesperidin at 10–80 mg/L.