Objective:To determine the effect of Lentinula edodes extract on ultraviolet(UV)A and UVB-induced changes in matrix metalloproteinase(MMP)and type I procollagen expression using human immortalized HaCaT keratinocytes....Objective:To determine the effect of Lentinula edodes extract on ultraviolet(UV)A and UVB-induced changes in matrix metalloproteinase(MMP)and type I procollagen expression using human immortalized HaCaT keratinocytes.Methods:Lentinula edodes ethanol extract(LEE)was obtained by extraction with 80%ethanol for 4 h at 80℃.Effect of LEE on UVinduced alteration on the expression and production of MMPs and type I procollagen in keratinocytes was investigated using ELISA,RT-PCR,and Western blotting assay.To determine the underlying mechanism of LEE-mediated effects,mitogen-activated protein kinase(MAPK)and activator protein 1 signaling pathways were analysed by Western blotting assay.Results:LEE significantly inhibited the expression of MMP-1 and MMP-9 and increased the expression of type I procollagen in UVA and UVB-irradiated HaCaT keratinocytes.The phosphorylation levels of p38 were significantly inhibited by LEE whereas it did not affect c-Jun N-terminal kinase and extracellular signal-regulated kinase phosphorylation.Suppression of p38 phosphorylation was also accompanied by downregulation of UVA and UVB-induced increase in c-Fos.Conclusions:LEE effectively inhibits the expression of MMP-1 and MMP-9 and increases type I procollagen production through the p38 MAPK/c-Fos signaling pathway in UVA and UVB-irradiated HaCaT keratinocytes.This findings suggest that Lentinula edodes may be developed as a cosmetic material to suppress UV exposuremediated skin aging.展开更多
BACKGROUND Intracranial and extracranial artery stenosis is associated with cerebral infarction.Vascular calcification and atherosclerosis are the main causes of stenosis and major risk factors for cardiovascular and ...BACKGROUND Intracranial and extracranial artery stenosis is associated with cerebral infarction.Vascular calcification and atherosclerosis are the main causes of stenosis and major risk factors for cardiovascular and cerebrovascular events in patients with type 2 diabetes mellitus(T2DM).Bone turnover biomarkers(BTMs)are associated with vascular calcification,atherosclerosis,glucose,and lipid metabolism.AIM To investigate the association of circulating BTM levels with severe intracranial and extracranial artery stenosis in patients with T2DM.METHODS For this cross-sectional study including 257 T2DM patients,levels of the BTMs serum osteocalcin(OC),C-terminal cross-linked telopeptide of type I collagen(CTX),and procollagen type I N-peptide were measured by electrical chemiluminescent immunoassay,and artery stenosis was assessed by color Doppler and transcranial Doppler.Patients were grouped according to the existence and location(intracranial vs.extracranial)of artery stenosis.Correlations between BTM levels,previous stroke,stenosis location,and glucose and lipid metabolism were analyzed.RESULTS T2DM patients with severe artery stenosis had a higher frequency of previous stroke and levels of all three tested BTMs(all P<0.05)than patients without.Some differences in OC and CTX levels were observed according to the location of artery stenosis.Significant associations were also observed between BTM levels and some glucose and lipid homeostasis parameters.On multivariate logistic regression analysis,all BTMs were significant predictors of artery stenosis in T2DM patients with and without adjustment for confounding factors(all P<0.001),and receiver operating characteristic curve analysis demonstrated the ability of BTM levels to predict artery stenosis in T2DM patients.CONCLUSION BTM levels were found to be independent risk factors for severe intracranial and extracranial artery stenosis and were differentially associated with glucose and lipid metabolism in patients with T2DM.Therefore,BTMs may be promising biomarkers and potential therapeutic targets for artery stenosis.展开更多
目的:探讨慢性阻塞性肺疾病(chronic obstructive pulmonary disease,COPD)患者Ⅰ型胶原氨基端前肽(N-terminal propeptide of typeⅠprocollagen,PⅠNP)、Ⅰ型胶原羧基端肽β特殊序列(β-Cterminal telopeptide of typeⅠcollagen,β-C...目的:探讨慢性阻塞性肺疾病(chronic obstructive pulmonary disease,COPD)患者Ⅰ型胶原氨基端前肽(N-terminal propeptide of typeⅠprocollagen,PⅠNP)、Ⅰ型胶原羧基端肽β特殊序列(β-Cterminal telopeptide of typeⅠcollagen,β-CTX)水平与骨密度降低的关系。方法:选取COPD患者80例,分为COPD急性加重组40例与COPD稳定组40例,选取同期在本院体检的健康人群40例作为对照组,采用双能X射线骨密度检测仪测量所有对象的骨密度,测定并比较血清中骨代谢指标PⅠNP、β-CTX的水平。结果:COPD急性加重组与COPD稳定组骨质疏松发生率均明显高于对照组(P<0.001)。COPD急性加重组与COPD稳定组血清β-CTX水平较对照组均显著升高,且COPD急性加重组高于COPD稳定组,差异均有统计学意义(P<0.05);而COPD急性加重组与COPD稳定组血清PⅠNP水平、PⅠNP/β-CTX比值均低于对照组(P<0.01)。结论:COPD患者,尤其是急性加重期的患者,骨吸收功能异常活跃,新骨形成速度减慢,骨量丢失明显增加,从而存在较高的继发骨质疏松的风险。展开更多
基金supported by the Ministry of Trade,Industry&Energy,Korea Institute for Advancement of Technology and Busan Institute For Regional Program Evaluation through the Encouragement Program for the Social and Economic Innovation Growth(project number,P0008724)
文摘Objective:To determine the effect of Lentinula edodes extract on ultraviolet(UV)A and UVB-induced changes in matrix metalloproteinase(MMP)and type I procollagen expression using human immortalized HaCaT keratinocytes.Methods:Lentinula edodes ethanol extract(LEE)was obtained by extraction with 80%ethanol for 4 h at 80℃.Effect of LEE on UVinduced alteration on the expression and production of MMPs and type I procollagen in keratinocytes was investigated using ELISA,RT-PCR,and Western blotting assay.To determine the underlying mechanism of LEE-mediated effects,mitogen-activated protein kinase(MAPK)and activator protein 1 signaling pathways were analysed by Western blotting assay.Results:LEE significantly inhibited the expression of MMP-1 and MMP-9 and increased the expression of type I procollagen in UVA and UVB-irradiated HaCaT keratinocytes.The phosphorylation levels of p38 were significantly inhibited by LEE whereas it did not affect c-Jun N-terminal kinase and extracellular signal-regulated kinase phosphorylation.Suppression of p38 phosphorylation was also accompanied by downregulation of UVA and UVB-induced increase in c-Fos.Conclusions:LEE effectively inhibits the expression of MMP-1 and MMP-9 and increases type I procollagen production through the p38 MAPK/c-Fos signaling pathway in UVA and UVB-irradiated HaCaT keratinocytes.This findings suggest that Lentinula edodes may be developed as a cosmetic material to suppress UV exposuremediated skin aging.
基金Supported by Beijing Municipal Hospital Management Center“Cultivation Plan”,No.PX2022032.
文摘BACKGROUND Intracranial and extracranial artery stenosis is associated with cerebral infarction.Vascular calcification and atherosclerosis are the main causes of stenosis and major risk factors for cardiovascular and cerebrovascular events in patients with type 2 diabetes mellitus(T2DM).Bone turnover biomarkers(BTMs)are associated with vascular calcification,atherosclerosis,glucose,and lipid metabolism.AIM To investigate the association of circulating BTM levels with severe intracranial and extracranial artery stenosis in patients with T2DM.METHODS For this cross-sectional study including 257 T2DM patients,levels of the BTMs serum osteocalcin(OC),C-terminal cross-linked telopeptide of type I collagen(CTX),and procollagen type I N-peptide were measured by electrical chemiluminescent immunoassay,and artery stenosis was assessed by color Doppler and transcranial Doppler.Patients were grouped according to the existence and location(intracranial vs.extracranial)of artery stenosis.Correlations between BTM levels,previous stroke,stenosis location,and glucose and lipid metabolism were analyzed.RESULTS T2DM patients with severe artery stenosis had a higher frequency of previous stroke and levels of all three tested BTMs(all P<0.05)than patients without.Some differences in OC and CTX levels were observed according to the location of artery stenosis.Significant associations were also observed between BTM levels and some glucose and lipid homeostasis parameters.On multivariate logistic regression analysis,all BTMs were significant predictors of artery stenosis in T2DM patients with and without adjustment for confounding factors(all P<0.001),and receiver operating characteristic curve analysis demonstrated the ability of BTM levels to predict artery stenosis in T2DM patients.CONCLUSION BTM levels were found to be independent risk factors for severe intracranial and extracranial artery stenosis and were differentially associated with glucose and lipid metabolism in patients with T2DM.Therefore,BTMs may be promising biomarkers and potential therapeutic targets for artery stenosis.
文摘目的:探讨慢性阻塞性肺疾病(chronic obstructive pulmonary disease,COPD)患者Ⅰ型胶原氨基端前肽(N-terminal propeptide of typeⅠprocollagen,PⅠNP)、Ⅰ型胶原羧基端肽β特殊序列(β-Cterminal telopeptide of typeⅠcollagen,β-CTX)水平与骨密度降低的关系。方法:选取COPD患者80例,分为COPD急性加重组40例与COPD稳定组40例,选取同期在本院体检的健康人群40例作为对照组,采用双能X射线骨密度检测仪测量所有对象的骨密度,测定并比较血清中骨代谢指标PⅠNP、β-CTX的水平。结果:COPD急性加重组与COPD稳定组骨质疏松发生率均明显高于对照组(P<0.001)。COPD急性加重组与COPD稳定组血清β-CTX水平较对照组均显著升高,且COPD急性加重组高于COPD稳定组,差异均有统计学意义(P<0.05);而COPD急性加重组与COPD稳定组血清PⅠNP水平、PⅠNP/β-CTX比值均低于对照组(P<0.01)。结论:COPD患者,尤其是急性加重期的患者,骨吸收功能异常活跃,新骨形成速度减慢,骨量丢失明显增加,从而存在较高的继发骨质疏松的风险。
