Objective To study the serum laminin(LN)and fibronectin(FN)changes in acute coronary syndromes(ACS),and explore the role of them in assessing the severity of ACS.Methods This study included 46 ACS patients [25 with ac...Objective To study the serum laminin(LN)and fibronectin(FN)changes in acute coronary syndromes(ACS),and explore the role of them in assessing the severity of ACS.Methods This study included 46 ACS patients [25 with acute myocardial infarction(AMI)and 21 with unstable angina(UA)],51 stable angina(SA)patients and 47 people without CHD as controls.Serum levels of LN,FN,fibrinogen and blood fat were assessed.Coronary angiography were performed on 49 of them.Results The serum concentration of LN was lower in ACS patients [(85.20±27.57)ng/mL],higher in SA patients [(116.80±28.80)ng/mL] as compared to that in the control group [(100.06±29.96)ng/mL],with significant difference among the groups(P<0.05).No difference was found in FN among the three groups.However,the subgroup analysis in the group with ACS showed that the serum concentration of FN was significantly higher in UA patients [(229.60±121.39)μg/mL],and lower in AMI patients [(108.31±47.12)μg/mL].The serum LN and FN concentration could respectively enter the logistic regression equations of ACS patients and US patients.Neither LN nor FN concentration was correlated with narrowing of coronary artery of angiography.Conclusion Serum LN and FN level may be a useful indicator for stability of atherosclerosis plaque in coronary arterial disease patients,but could not predict the extent of narrowing in coronary angiography.展开更多
AIM： To clarify the clinicopathological significance of laminin-5 y2 （LNγ2） and 133 （LNI33） chains and MMP7 expression in biliary tract cancer. METHODS： We analyzed the association between immunohistochemically...AIM： To clarify the clinicopathological significance of laminin-5 y2 （LNγ2） and 133 （LNI33） chains and MMP7 expression in biliary tract cancer. METHODS： We analyzed the association between immunohistochemically detected LNγ2, LNβ3, and MMP7 expression in biliary tract cancer and clinicopathological characteristics. Activity of MMP7 was analyzed by casein zymography. An in vitro invasion assay after treatment with MMP7-specific siRNA was performed. RESULTS： LNγ2 expression was predominantly observed in carcinoma cells at the invasive front. LNγ2 expression was seen in 57% of patients with biliary tract cancer, and was associated with depth of invasion, histologic type, and advanced stage. The expression pattern of LNβ3 was classified Into two types： invasive front dominant type （38%） and diffuse type （28%）.The invasive front dominant type was associated with histologic type and advanced stage. MMP7 positivity was correlated with LNγ2 or LNβ3 expression but not with clinicopathological characteristics. Active MMP7 detected by casein zymography was correlated with depth of invasion and advanced stage. Downregulation of MMP7 expression by siRNA resulted in a significant decrease in biliary tract cancer cell invasion in vitro.CONCLUSION： Our results suggest that LNγ2 and LNβ3, in conjunction with MMP7, play a key role in the progression of biliary tract cancer.展开更多
Fibronectin glomerulopathy is a rare autosomal dominant inherited glomerular disease associated with massive deposition of fibronectin.We recently diagnosed fibronectin glomerulopathy in a 29-year-old woman presenting...Fibronectin glomerulopathy is a rare autosomal dominant inherited glomerular disease associated with massive deposition of fibronectin.We recently diagnosed fibronectin glomerulopathy in a 29-year-old woman presenting nephrotic syndrome.Genetic analysis of fibronectin 1 gene showed heterozygosity for the Y973C mutation.However,this mutation was not found in her parents.She had stable renal function but persistent nephrotic proteinuria after one-year follow-up.展开更多
目的:研究lam in in和survivin蛋白在原发性胆囊癌组织中的表达情况,及其与癌组织类型、病理分级和转移状况的关系。方法:应用免疫组织化学方法检测49例原发性胆囊癌、21例胆囊腺瘤和13例慢性胆囊炎组织中lam in in和survivin蛋白的表...目的:研究lam in in和survivin蛋白在原发性胆囊癌组织中的表达情况,及其与癌组织类型、病理分级和转移状况的关系。方法:应用免疫组织化学方法检测49例原发性胆囊癌、21例胆囊腺瘤和13例慢性胆囊炎组织中lam in in和survivin蛋白的表达。结果:胆囊黏膜内癌或原位癌细胞基底膜lam in in线性染色完整;NevinⅡ期胆囊癌组织表现为基底膜不完整,变薄,断裂,或缺损;临床NevinⅢ、Ⅳ、Ⅴ期胆囊癌,则无基底膜形成,在肿瘤组织周围,lam in in表达类型呈碎片状或断线状和连续线状,部分癌组织内lam in in染色消失和癌细胞浆内有lam in in弱染色。胆囊癌组织中survivin阳性表达率明显高于胆囊腺瘤和慢性胆囊炎组织,但survivin的阳性表达与胆囊癌细胞分化程度、病理分级和转移无关(P>0.05)。且胆囊癌组织中lam in in的连续线断裂或缺失,与胆囊癌组织中survivin的表达情况无相关性。结论:胆囊癌基质中lam in in的表达类型与胆囊癌的侵袭和转移有关,而survivin在胆囊癌中表达增加,但两者之间似乎无关联。展开更多
Fibronectins are adhesive glycoproteins that can be found in tissue matrices and circulating in various fluids of the body. The variable composition of fibronectin molecules facilitates a diversity of interactions wit...Fibronectins are adhesive glycoproteins that can be found in tissue matrices and circulating in various fluids of the body. The variable composition of fibronectin molecules facilitates a diversity of interactions with cell surface receptors that suggest a role for these proteins beyond the structural considerations of the extracellular matrix. These interactions implicate fibronectin in the regulation of mechanisms that also determine cell behavior and activity. The two major forms, plasma fibronectin (pFn) and cellular fibronectin (cFn), exist as balanced amounts under normal physiological conditions. However, during injury and/or disease, tissue and circulating levels of cFn become disproportionately elevated. The accumulating cFn, in addition to being a consequence of prolonged tissue damage, may in factstimulate cellular events that promote further damage. In this review, we summarize what is known regarding such interactions between fibronectin and cells that may influence the biological response to injury. We elaborate on the effects of cFn in the liver, specifically under a condition of chronic alcohol-induced injury. Studies have revealed that chronic alcohol consumption stimulates excess production of cFn by sinusoidal endothelial cells and hepatic stellate cells while impairing its clearance by other cell types resulting in the build up of this glycoprotein throughout the liver and its consequent increased availability to influence cellular activity that could promote the development of alcoholic liver disease. We describe recent findings by our laboratory that support a plausible role for cFn in the promotion of liver injury under a condition of chronic alcohol abuse and the implications of cFn stimulation on the pathogenesis of alcoholic liver disease. These findings suggest an effect of cFn in regulating cell behavior in the alcohol-injured liver that is worth further characterizing not only to gain a more comprehensive understanding of the role this reactive glycoprotein plays in the progression of injury but also for the insight further studies could provide towards the development of novel therapies for alcoholic liver disease.展开更多
文摘Objective To study the serum laminin(LN)and fibronectin(FN)changes in acute coronary syndromes(ACS),and explore the role of them in assessing the severity of ACS.Methods This study included 46 ACS patients [25 with acute myocardial infarction(AMI)and 21 with unstable angina(UA)],51 stable angina(SA)patients and 47 people without CHD as controls.Serum levels of LN,FN,fibrinogen and blood fat were assessed.Coronary angiography were performed on 49 of them.Results The serum concentration of LN was lower in ACS patients [(85.20±27.57)ng/mL],higher in SA patients [(116.80±28.80)ng/mL] as compared to that in the control group [(100.06±29.96)ng/mL],with significant difference among the groups(P<0.05).No difference was found in FN among the three groups.However,the subgroup analysis in the group with ACS showed that the serum concentration of FN was significantly higher in UA patients [(229.60±121.39)μg/mL],and lower in AMI patients [(108.31±47.12)μg/mL].The serum LN and FN concentration could respectively enter the logistic regression equations of ACS patients and US patients.Neither LN nor FN concentration was correlated with narrowing of coronary artery of angiography.Conclusion Serum LN and FN level may be a useful indicator for stability of atherosclerosis plaque in coronary arterial disease patients,but could not predict the extent of narrowing in coronary angiography.
基金Supported by Grants-in-Aid for Scientific Research from the Ministry of Education, Culture,Sports,Science and Technology of Japan (H.Y. and K.I.)Grants-in-Aid for Cancer Research and for the Third Term Comprehensive 10-Year Strategy for Cancer Control from the Ministry of Health,Labor and Welfare of Japan (H.Y. and K.I.)
文摘AIM： To clarify the clinicopathological significance of laminin-5 y2 （LNγ2） and 133 （LNI33） chains and MMP7 expression in biliary tract cancer. METHODS： We analyzed the association between immunohistochemically detected LNγ2, LNβ3, and MMP7 expression in biliary tract cancer and clinicopathological characteristics. Activity of MMP7 was analyzed by casein zymography. An in vitro invasion assay after treatment with MMP7-specific siRNA was performed. RESULTS： LNγ2 expression was predominantly observed in carcinoma cells at the invasive front. LNγ2 expression was seen in 57% of patients with biliary tract cancer, and was associated with depth of invasion, histologic type, and advanced stage. The expression pattern of LNβ3 was classified Into two types： invasive front dominant type （38%） and diffuse type （28%）.The invasive front dominant type was associated with histologic type and advanced stage. MMP7 positivity was correlated with LNγ2 or LNβ3 expression but not with clinicopathological characteristics. Active MMP7 detected by casein zymography was correlated with depth of invasion and advanced stage. Downregulation of MMP7 expression by siRNA resulted in a significant decrease in biliary tract cancer cell invasion in vitro.CONCLUSION： Our results suggest that LNγ2 and LNβ3, in conjunction with MMP7, play a key role in the progression of biliary tract cancer.
文摘Fibronectin glomerulopathy is a rare autosomal dominant inherited glomerular disease associated with massive deposition of fibronectin.We recently diagnosed fibronectin glomerulopathy in a 29-year-old woman presenting nephrotic syndrome.Genetic analysis of fibronectin 1 gene showed heterozygosity for the Y973C mutation.However,this mutation was not found in her parents.She had stable renal function but persistent nephrotic proteinuria after one-year follow-up.
文摘目的:研究lam in in和survivin蛋白在原发性胆囊癌组织中的表达情况,及其与癌组织类型、病理分级和转移状况的关系。方法:应用免疫组织化学方法检测49例原发性胆囊癌、21例胆囊腺瘤和13例慢性胆囊炎组织中lam in in和survivin蛋白的表达。结果:胆囊黏膜内癌或原位癌细胞基底膜lam in in线性染色完整;NevinⅡ期胆囊癌组织表现为基底膜不完整,变薄,断裂,或缺损;临床NevinⅢ、Ⅳ、Ⅴ期胆囊癌,则无基底膜形成,在肿瘤组织周围,lam in in表达类型呈碎片状或断线状和连续线状,部分癌组织内lam in in染色消失和癌细胞浆内有lam in in弱染色。胆囊癌组织中survivin阳性表达率明显高于胆囊腺瘤和慢性胆囊炎组织,但survivin的阳性表达与胆囊癌细胞分化程度、病理分级和转移无关(P>0.05)。且胆囊癌组织中lam in in的连续线断裂或缺失,与胆囊癌组织中survivin的表达情况无相关性。结论:胆囊癌基质中lam in in的表达类型与胆囊癌的侵袭和转移有关,而survivin在胆囊癌中表达增加,但两者之间似乎无关联。
基金Supported by The National Institute on Alcohol Abuse and Al-coholism and the US Department of Veterans Affairs
文摘Fibronectins are adhesive glycoproteins that can be found in tissue matrices and circulating in various fluids of the body. The variable composition of fibronectin molecules facilitates a diversity of interactions with cell surface receptors that suggest a role for these proteins beyond the structural considerations of the extracellular matrix. These interactions implicate fibronectin in the regulation of mechanisms that also determine cell behavior and activity. The two major forms, plasma fibronectin (pFn) and cellular fibronectin (cFn), exist as balanced amounts under normal physiological conditions. However, during injury and/or disease, tissue and circulating levels of cFn become disproportionately elevated. The accumulating cFn, in addition to being a consequence of prolonged tissue damage, may in factstimulate cellular events that promote further damage. In this review, we summarize what is known regarding such interactions between fibronectin and cells that may influence the biological response to injury. We elaborate on the effects of cFn in the liver, specifically under a condition of chronic alcohol-induced injury. Studies have revealed that chronic alcohol consumption stimulates excess production of cFn by sinusoidal endothelial cells and hepatic stellate cells while impairing its clearance by other cell types resulting in the build up of this glycoprotein throughout the liver and its consequent increased availability to influence cellular activity that could promote the development of alcoholic liver disease. We describe recent findings by our laboratory that support a plausible role for cFn in the promotion of liver injury under a condition of chronic alcohol abuse and the implications of cFn stimulation on the pathogenesis of alcoholic liver disease. These findings suggest an effect of cFn in regulating cell behavior in the alcohol-injured liver that is worth further characterizing not only to gain a more comprehensive understanding of the role this reactive glycoprotein plays in the progression of injury but also for the insight further studies could provide towards the development of novel therapies for alcoholic liver disease.
