Fatty acid extracts from Lucilia sericata larvae promote murine cutaneous wound healing by angiogenic activity

Department of Orthopedic Surgery, First Affiliated Hospital, Dalian Medical University, Dalian, Liaoning Province, China.
Lipids in Health and Disease (Impact Factor: 2.22). 03/2010; 9(1):24. DOI: 10.1186/1476-511X-9-24
Source: PubMed


fatty acids are considered to be effective components to promote wound healing and Lucilia sericata larvae are applied clinically to treat intractable wounds. We aimed to investigate the effect of fatty acid extracts from dried Lucilia sericata larvae on murine cutaneous wound healing as well as angiogenesis.
On day 7 and 10 after murine acute excision wounds creation, the percent wound contraction of fatty acid extracts group was higher than that of vaseline group. On day 3, 7 and 10 after wounds creation, the wound healing quality of fatty acid extracts group was better than that of vaseline group on terms of granulation formation and collagen organization. On day 3 after wounds creation, the micro vessel density and vascular endothelial growth factor expression of fatty acid extracts group were higher than that of vaseline group. Component analysis of the fatty acid extracts by gas chromatography-mass spectrometry showed there were 10 kinds of fatty acids in total and the ratio of saturated fatty acid, monounsaturated fatty acid and polyunsaturated fatty acid (PUFA) was: 20.57%:60.32%:19.11%.
Fatty acid extracts from dried Lucilia sericata larvae, four fifths of which are unsaturated fatty acids, can promote murine cutaneous wound healing probably resulting from the powerful angiogenic activity of the extracts.

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Available from: Jianing Zhang, May 07, 2014
    • "Bexfield et al. (2009), for example, isolated proangiogenic compounds in the larval ES among which the amino acids L-histidine, 3-guanidinopropionic acid, and L-valinol, which stimulate the proliferation of human endothelial cells. Moreover, Zhang et al. (2010) found that extracts of larval fatty acids of Lucilia sericata (Calliphoridae) have angiogenic activity, although the mechanism is still not well understood. Wang et al. (2010) also observed that larval ES promote the migration of endothelial cells, which are the blood vessel forming cells, during the healing of wounds. "
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    • "The ES enzymes or other constituents have been shown to activate the fibroblasts [156] and evidence is accumulating for an active role for ES in wound healing. Thus, specific amino acids derivatives and fatty acids extracts (Table 5) from L. sericata ES induce mitosis in human endothelial cells and activate angiogenesis and wound healing [135, 136]. "
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    • "In fact, today, allantoin and urea are components of many cosmetics. With recent advances in cellular biology and chemistry, we now know that maggot ASE stimulates the proliferation of fibroblasts [62] and endothelial tissue (unpublished data), increases angiogenesis [63], and enhances fibroblast migration over model wound surfaces [64] [65] [66]. Biopsies of maggot-treated wounds reveal profound angiogenesis [67]. "
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