Journal of Ethnopharmacology 2019-May
Influence of traditionally used Nepalese plants on wound healing and immunological properties using primary human cells in vitro.
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MATERIALS AND METHODS
Nine Nepalese plant extracts in three different solvents (methanol, ethyl acetate, petroleum ether) were immunologically characterised. Water-soluble tetrazolium (WST-1) assays and scratch assays were performed to determine their impact on viability and wound healing capacity of human keratinocytes and fibroblasts. Effects on proliferation, viability and function of physiologically relevant anti-CD3 and anti-CD28 stimulated primary human T lymphocytes were assessed using carboxyfluorescein succinimidyl ester (CFSE), annexin V/propidium iodide staining assays and flow cytometry-based surface receptor characterisation. The secretion level of interleukin-2 (IL-2) was analysed with the ELISA technique. Dendritic cells were generated out of peripheral blood mononuclear cells (PBMC) by CD14+ magnetic bead selection. Flow cytometry-based surface receptor characterisation and ELISA-based technique were used to evaluate the DC activation state and the interleukin-8 (IL-8) secretion level.