TY - JOUR
T1 - Comparison of the irritation potentials of Boswellia serrata gum resin and of acetyl-11-keto-β-boswellic acid by in vitro cytotoxicity tests on human skin-derived cell lines
AU - Burlando, Bruno
AU - Parodi, Alessandro
AU - Volante, Andrea
AU - Bassi, Anna Maria
N1 - Funding Information:
We thank the Comitato Scientifico EQUIVITA, Animalisti Italiani and Movimento Ecologico Nazionale UNA for their financial support to part of this study. A.V. is recipient of a Research Fellowship from the University of Piemonte Orientale.
PY - 2008/3/15
Y1 - 2008/3/15
N2 - Indian frankincense is a gum resin from Boswellia serrata of Burseraceae used in Ayurveda and Western medicine for the antinflammatory effects of boswellic acids, particularly 3-O-acetyl-11-keto-β-boswellic acid (AKBA). We evaluated in vitro cytotoxicities of B. serrata extract and AKBA on differentiated and undifferentiated keratinocytes (HaCaT and NCTC 2544), and foetal dermal fibroblasts (HFFF2), using neutral red uptake (NRU), MTT, and DNA assays. Comparison between NRU and MTT, and between the extract and AKBA, suggested a relatively higher toxicity of both substances on lysosomes respect to mitochondria. Extract cytotoxicity on lysosomes was higher in NCTC and HFFF2 than on the more differentiated HaCaT. DNA assay showed low extract inhibition on HFFF2 proliferation, possibly due to lower growth rate, and a stronger effect on NCTC than on HaCaT, possibly related to higher proapoptotic effect on the less differentiated NCTC, as also suggested by higher AKBA toxicity on NCTC than on HaCaT. In general, gum resin and AKBA toxicities were slightly lower or higher than that of the reference compound SDS. Our in vitro model allowed to compare the sensitivities of different human skin cells to B. serrata, and indicated that the gum resin and AKBA exert moderate to low toxicity on the skin.
AB - Indian frankincense is a gum resin from Boswellia serrata of Burseraceae used in Ayurveda and Western medicine for the antinflammatory effects of boswellic acids, particularly 3-O-acetyl-11-keto-β-boswellic acid (AKBA). We evaluated in vitro cytotoxicities of B. serrata extract and AKBA on differentiated and undifferentiated keratinocytes (HaCaT and NCTC 2544), and foetal dermal fibroblasts (HFFF2), using neutral red uptake (NRU), MTT, and DNA assays. Comparison between NRU and MTT, and between the extract and AKBA, suggested a relatively higher toxicity of both substances on lysosomes respect to mitochondria. Extract cytotoxicity on lysosomes was higher in NCTC and HFFF2 than on the more differentiated HaCaT. DNA assay showed low extract inhibition on HFFF2 proliferation, possibly due to lower growth rate, and a stronger effect on NCTC than on HaCaT, possibly related to higher proapoptotic effect on the less differentiated NCTC, as also suggested by higher AKBA toxicity on NCTC than on HaCaT. In general, gum resin and AKBA toxicities were slightly lower or higher than that of the reference compound SDS. Our in vitro model allowed to compare the sensitivities of different human skin cells to B. serrata, and indicated that the gum resin and AKBA exert moderate to low toxicity on the skin.
KW - Boswellic acids
KW - Human skin-derived cells
KW - In vitro cytotoxicity
KW - Indian frankincense
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U2 - 10.1016/j.toxlet.2008.01.008
DO - 10.1016/j.toxlet.2008.01.008
M3 - Article
C2 - 18304763
AN - SCOPUS:39749102786
SN - 0378-4274
VL - 177
SP - 144
EP - 149
JO - Toxicology Letters
JF - Toxicology Letters
IS - 2
ER -