Journal
CARBOHYDRATE POLYMERS
Volume 105, Issue -, Pages 169-176Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2014.01.080
Keywords
Lachnum; Heteropolysaccharide; Purification; Structural characterization; Scald; Wound healing
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Funding
- National Natural Science Foundation of China [31070021]
- Fundamental Research Funds for the Central Universities [2012HGZY0020]
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An exopolysaccharide (LEP-2b) with molecular weight of 2.8 x 10(4) Da was isolated from Lachnum YM405 and purified by DEAE-cellulose 52, Sepharose CL-6B chromatographic column. It consisted of rhamnose (Rha),mannose (Man), glucose (Glc) and galactose (Gal) in a molar ratio of 1.0:5.0:11.5:12.5. Its backbone consisted of -> 4)-beta-D-Manp-(1 ->, -> 2)-alpha-D-Rhap-(1 ->, -> 6)-beta-D-Glcp-(1 ->, and -> 6)-alpha-D-Galp-(1 ->, and three types of branches were composed of -> 6)-alpha-D-1-OMe-Manf-(2 ->, -> 6)-beta-D-1-OMe-Manf-(2 ->, -> 1)-alpha-D-Galp-(6 ->, -> 1)-beta-D-Galp-(6 -> and -> 1)-beta-D-Glcp, which were at O-3 of 1,3,6-linked alpha-D-Manp and O-2,O-3 of the same 1,2,3,6-linked beta-D-Glcp in the backbone respectively. LEP-2b ointment significantly accelerated the decrustation of the wounded skin, shortened the healing time and increased the water and hydroxyproline contents of the healed skin. Combined with the results of macroscopic and histological observations, we deemed that LEP-2b could inhibit inflammatory reaction of scalded skin, accelerate tissue repair and re-epithelialization, thereby playing a positive role in promoting wound healing. (C) 2014 Elsevier Ltd. All rights reserved.
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