ALOIN Inhibits Interleukin (IL)-1β-Stimulated IL-8 Production in KB Cells.

Clostridium histolyticum collagenase (ChC) results dose-dependently inhibited by aloe gel and the activity-guided fractionation led to an active fraction enriched in phenolics and aloins.?Aloins have been shown to be able to bind and to inhibit ChC reversibly and non-competitively.?Aloe gel and aloins are also effective inhibitors of stimulated granulocyte matrix metalloproteinases (MMPs)[1].

Aloin effectively inhibits salivary IL-1β-induced IL-8 production by mitigating the p38 and ERK pathway. Therefore, aloin may be a good candidate for modulating oral inflammatory diseases[2].

Saliva was collected from volunteers to determine IL-1β and IL-8 levels. Samples from volunteers were divided into two groups: those with low and those with high IL-1β levels. KB cells were stimulated with IL-1β or saliva with or without IL-1 receptor agonist or specific mitogen-activated protein kinase (MAPK) inhibitors. IL-8 production was measured by enzyme-linked immunosorbent assay (ELISA). MAPK protein expression involved in IL-1β-induced IL-8 secretion was detected by Western blot. KB cells were pretreated with?aloin, and its effect on IL-1β-induced IL-8 production was examined by ELISA and Western blot analysis[1].