RESUMO
Objective: To investigate the anti-inflammatory properties of methanolic extract of Clausena excavata in lipopolysaccharide (LPS)-activated macrophages (J774A.1) and the effect on skin wound in a rat model through determining cytokine levels and gene expressions. Methods: The effects of methanolic extract of Clausena excavata on in vitro viability and TNF-α, IL-6, IL-10, and nitric oxide release by LPS-activated J774A.1 cells were determined. In addition, relative expressions of BAX, BCL-2 and COX-2 genes were examined in healed wounds of rats. Results: The methanolic extract of Clausena excavata was not toxic to J774A.1 cells at the highest dose of 400 μg/mL. It decreased levels of TNF-α and IL-6, while increasing IL-10 level in LPS-activated J774A.1 cells and in the healed wounds of rats. The methanolic extract of Clausena excavata also inhibited nitric oxide production in LPS-activated J774A.1 cells. The BAX and COX-2 genes were downregulated while the BCL-2 gene was upregulated in the healed wound of rats. Conclusions: The methanolic extract of Clausena excavata promotes wound healing via its anti-inflammatory and anti-apoptotic activities.
RESUMO
Objective: To investigate the anti-inflammatory properties of methanolic extract of Clausena excavata in lipopolysaccharide (LPS)-activated macrophages (J774A.1) and the effect on skin wound in a rat model through determining cytokine levels and gene expressions.Methods: The effects of methanolic extract of Clausena excavata on in vitro viability and TNF-α, IL-6, IL-10, and nitric oxide release by LPS-activated J774A.1 cells were determined. In addition, relative expressions of BAX, BCL-2 and COX-2 genes were examined in healed wounds of rats. Results: The methanolic extract of Clausena excavata was not toxic to J774A.1 cells at the highest dose of 400 μg/mL. It decreased levels of TNF-α and IL-6, while increasing IL-10 level in LPS-activated J774A.1 cells and in the healed wounds of rats. The methanolic extract of Clausena excavata also inhibited nitric oxide production in LPS-activated J774A.1 cells. The BAX and COX-2 genes were downregulated while the BCL-2 gene was upregulated in the healed wound of rats. Conclusions: The methanolic extract of Clausena excavata promotes wound healing via its anti-inflammatory and anti-apoptotic activities.
RESUMO
OBJECTIVE： To analyze the difference of volatile oil components from the leaves of Clausena lansium and Clausena excavata. METHODS： The volatile oil was extracted from the leaves of C. lansium and C. excavata by steam distillation. GC-MS method was adopted to analyze volatile oil to obtain TIC. After mass spectra scanning of the chromatographic peaks in the TIC diagram by HPMSD chemical workstation， chemical components of volatile oil in 2 kinds of samples were identified by retrieving and comparing mass spectrum database NIST Version 1.7. The peak area normalization method was used to calculate the relative mass fraction of each component. RESULTS： A total of 43 and 31 kinds of components were identified in volatile oil from the leaves of C. lansium and C. excavata； total relative mass fractions were 97.59％ and 98.57％. Relative mass fractions of 19 and 18 components in volatile oil from the leaves of C. lansium and C. excavata were more than 1％， mainly being sesquiterpenoids. Relative mass fractions of 7 and 5 components in volatile oil from the leaves of C. lansium and C. excavata were more than 5％； the volatile components in volatile oil from the leaves of C. lansium were mainly （-）-spatol （12.35％） and （E）-5-{（1R，3R，6S）-2，3-dimethyltricyclic [2.2.1.02，6] heptane-3-yl}-2-methyl pentane-2-enol （14.70％）； those from the leaves of C. excavata were mainly （E）-sesquihydrated betuline （24.94％） and 1-（1， 5-dimethy-4-hexenyl）-4-methyl-benzene （16.15％）. A total of 4 components were found in volatile oil from the leaves of C. lansium and C. excavata， mainly being α-humulene， （E）-5-{（1R，3R，6S）-2，3-dimethyltricyclic [2.2.1.02，6] heptane-3-yl}-2-methylpentaeryl-2-enol， caryophyllene oxide and （-）-spatol； the content differences of them were not significant. CONCLUSIONS： The components of volatile oils from the leaves of C. lansium and C. excavata are basically similar However， the composition and comtent of specific components are quiet different and can not substituted for each other.