Linked Life Data

19041641

Source:http://linkedlifedata.com/resource/pubmed/id/19041641

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2008-12-16
pubmed:abstractText
It is well-known that chronic ultraviolet B (UVB) exposure at low-dose causes skin photoaging including increases in skin thickness and wrinkle formation and reduction in skin elasticity. This study examined the effects of total saponins and ginsenoside Rb(1) isolated from Red Ginseng roots on skin thickness, elasticity, and wrinkle formation caused by long-term, low-dose UVB irradiation in hairless mice. The topical application of total ginseng saponins (10 pg or 100 ng/mouse) and ginsenoside Rb(1) (100 fg, 10 pg, or 1 ng/mouse) significantly inhibited increases in skin thickness and wrinkle formation and the reduction in skin elasticity induced by long-term UVB irradiation. Furthermore, we examined the histological effects of total saponins and ginsenoside Rb(1) in the skin of UVB-irradiated hairless mice. The increases in apoptotic, Ki-67-, and 8-hydroxy-2'-deoxyguanosine-positive cells induced by UVB exposure were prevented by the topical application of total saponins and ginsenoside Rb(1). Furthermore, total saponins and ginsenoside Rb(1) prevented the disruption of collagen fibers induced by the long-term UVB irradiation. Ginsenoside Rb(1) (100 fg, 10 pg, and 1 ng/ml) increased the Bcl-2 expression level in UVB-treated human keratinocytes. The protective effect of ginsenoside Rb(1) on UVB-mediated apoptosis may be due to the up-regulation of Bcl-2 expression. These results suggest that the protective effect of ginsenoside Rb(1) on skin photoaging induced by chronic UVB exposure may be due to the increase in collagen synthesis and/or the inhibition of matrix metalloproteinase expression in dermal fibroblasts.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
1879-0712
pubmed:author
pubmed:issnType
Electronic
pubmed:day
5
pubmed:volume
602
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
148-56
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
Effects of ginseng saponins isolated from red ginseng on ultraviolet B-induced skin aging in hairless mice.
pubmed:affiliation
Division of Functional Histology, Department of Functional Biomedicine, Ehime University Graduate School of Medicine, Shitsukawa, Toon City, Ehime 791-0295, Japan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't