AIM: To investigate the association of the functional monocyte chemotactic protein-1 (MCP-1) promoter polymorphism (A-2518G) with spontaneous bacterial peritonitis (SBP).
AIM:To investigate a genetic polymorphism of the monocyte chemotactic protein-1 (MCP-1 ) gene in patients with spontaneous bacterial peritonitis (SBP).METHODS:MCP-1 genotyping was performed in 23 patients with SBP and...AIM:To investigate a genetic polymorphism of the monocyte chemotactic protein-1 (MCP-1 ) gene in patients with spontaneous bacterial peritonitis (SBP).METHODS:MCP-1 genotyping was performed in 23 patients with SBP and 83 cirrhotic control patients with non-infected ascites.RESULTS:The frequency of carriers of the G-allele was lower in SBP patients but this difference did not reach statistical significance. However,in the subgroup of patients with alcoholic cirrhosis (n=80),carriers of the G-allele were significantly less frequent in SBP-patients (38.1%) than in cirrhotic controls (67.8%,P=0.021). CONCLUSION:In patients with alcoholic liver cirrhosis,the-2518 MCP-1 genotype AA is a risk factor for the development of SBP.展开更多
AIM: To investigate plasma Monocyte Chemotactic Protein-1 levels preoperatively in colorectal cancer(CRC) and benign patients and postoperatively after CRC resection.METHODS: A plasma bank was screened for minimally i...AIM: To investigate plasma Monocyte Chemotactic Protein-1 levels preoperatively in colorectal cancer(CRC) and benign patients and postoperatively after CRC resection.METHODS: A plasma bank was screened for minimally invasive colorectal cancer resection(MICR) for CRC and benign disease(BEN) patients for whom preoperative, early postoperative, and 1 or more late postoperative samples(postoperative day 7-27) were available. Monocyte chemotactic protein-1(MCP-1) levels(pg/mL) were determined via enzyme linked immuno-absorbent assay. RESULTS: One hundred and two CRC and 86 BEN patients were studied. The CRC patient's median preoperative MCP-1 level(283.1, CI: 256.0, 294.3) was higher than the BEN group level(227.5, CI: 200.2, 245.2; P = 0.0004). Vs CRC preoperative levels, elevated MCP-1 plasma levels were found on postoperative day 1(446.3, CI: 418.0, 520.1), postoperative day 3(342.7, CI: 320.4, 377.4), postoperative day 7-13(326.5, CI: 299.4, 354.1), postoperative day 14-20(361.6, CI: 287.8, 407.9), and postoperative day 21-27(318.1, CI: 287.2, 371.6; P < 0.001 for all). CONCLUSION: Preoperative MCP-1 levels were higher in CRC patients(vs BEN). After MICR for CRC, MCP-1 levels were elevated for 1 mo and may promote angiogenesis, cancer recurrence and metastasis.展开更多
I read with great interest the article by Gbele et al published in issue 44 of World J Gastroenterol 2009.The results of their study indicate that-2518 Monocyte chemotactic protein-1(MCP-1)genotype AA is a risk fact...I read with great interest the article by Gbele et al published in issue 44 of World J Gastroenterol 2009.The results of their study indicate that-2518 Monocyte chemotactic protein-1(MCP-1)genotype AA is a risk factor for spontaneous bacterial peritonitis in patients with alcoholic cirrhosis.However,there are some items that need to be discussed.展开更多
AIM:To explain the role of Monocyte chemotactic protein-1 (MCP-1) and soluble adhesion molecules in chronic hepatitis C during the treatment of interferon alpha (IFNα) 2 b and ribavirin (RBV). METHODS:Concentrations ...AIM:To explain the role of Monocyte chemotactic protein-1 (MCP-1) and soluble adhesion molecules in chronic hepatitis C during the treatment of interferon alpha (IFNα) 2 b and ribavirin (RBV). METHODS:Concentrations of MCP-1,soluble adhesion molecules intercellular adhesion molecule-1 (sICAM-1),sP- selectin,interleukin (IL) 6,and IL10 in serum were estimated in the group of 40 patients with chronic hepatitis C treated with IFNalpha2 b and RBV in 0,16,32,48 wk of the therapy, RESULTS:In chronic hepatitis C,before and during the treatment,the serum levels of MCP-1 and sP-selectin in responders were similar to those of healthy subjects.In non- responders (NR),MCP-1 increased in the course of IFNc^+RBV treatment,differences were statistically significant as compared to responders.MCP-1 correlated statistically with the activity of periportal inflammation (r=0.35,P<0.05) but not with staging of liver fibrosis,sICAM-1 positively correlated with inflammatory activity and fibrosis in NR.sP-selectin did not correlate with histological findings in the liver.The MCP-1 correlated with the soluble form of sP-selectin concentrations (r= 6,P<0.001) and with IL-10 level in NR (r=0.4,P<0.05).There was no correlation observed between the concentration of MCP-1 and sICAM-1,IL-6 during the treatment. CONCLUSION:MCP-1 concentration may be a prognostic marker of the efficacy of IFN+RBV therapy in patients with chronic hepatitis C.展开更多
Objective: To study the chemotactic superfamily genes expression profiling of macrophage line U937 treated with monocyte chemoattractant protein-1 (MCP-1) using gene chip technique. Methods: Total RNA from macrophage ...Objective: To study the chemotactic superfamily genes expression profiling of macrophage line U937 treated with monocyte chemoattractant protein-1 (MCP-1) using gene chip technique. Methods: Total RNA from macrophage line U937 (as control) and U937 with MCP-1 was extracted, made reverse transcript to cDNA and tested with gene expression chip HO2 human. Results: Some chemotactic-related gene expressions were changed in all analyzed genes. Regulated upon activation, normal T cell expressed and secreted (RANTES) was up-regulated over 2-fold and 7 chemotactic-related genes (CCR2, CCR5, CCL16, GROβ, GROγ, IL-8 and granulocyte chemotactic protein 2) were down-regulated over 2-fold in MCP-1 treated U937 cells at mRNA level. Conclusion: MCP-1 can influence some chemokines and receptors expression in macrophage in vitro, in which MCP-1 mainly down-regulates the chemotactic genes expression of those influencing neutrophilic granulocyte (GROβ, GROγ, IL-8 and granulocyte chemotactic protein 2). Another novel finding is that it can also down-regulate the mRNA level of CCR5, which plays a critical role in many disorders and illnesses.展开更多
BACKGROUND Massive hepatocyte death is the core event in acute liver failure(ALF).Gasdermin D(GSDMD)-mediated pyroptosis is a type of highly inflammatory cell death.However,the role of hepatocyte pyroptosis and its me...BACKGROUND Massive hepatocyte death is the core event in acute liver failure(ALF).Gasdermin D(GSDMD)-mediated pyroptosis is a type of highly inflammatory cell death.However,the role of hepatocyte pyroptosis and its mechanisms of expanding inflammatory responses in ALF are unclear.AIM To investigate the role and mechanisms of GSDMD-mediated hepatocyte pyroptosis through in vitro and in vivo experiments.METHODS The expression of pyroptosis pathway-associated proteins in liver tissues from ALF patients and a hepatocyte injury model was examined by Western blot.GSDMD short hairpin RNA(shRNA)was used to investigate the effects of downregulation of GSDMD on monocyte chemotactic protein 1(MCP1)and its receptor CC chemokine receptor-2(CCR2)in vitro.For in vivo experiments,we used GSDMD knockout mice to investigate the role and mechanism of GSDMD in a D-galactose/lipopolysaccharide(D-Galn/LPS)-induced ALF mouse model.RESULTS The levels of pyroptosis pathway-associated proteins in liver tissue from ALF patients and a hepatocyte injury model increased significantly.The level of GSDMD-N protein increased most obviously(P<0.001).In vitro,downregulation of GSDMD by shRNA decreased the cell inhibition rate and the levels of MCP1/CCR2 proteins(P<0.01).In vivo,GSDMD knockout dramatically eliminated inflammatory damage in the liver and improved the survival of DGaln/LPS-induced ALF mice(P<0.001).Unlike the mechanism of immune cell pyroptosis that involves releasing interleukin(IL)-1βand IL-18,GSDMDmediated hepatocyte pyroptosis recruited macrophages via MCP1/CCR2 to aggravate hepatocyte death.However,this pathological process was inhibited after knocking down GSDMD.CONCLUSION GSDMD-mediated hepatocyte pyroptosis plays an important role in the pathogenesis of ALF,recruiting macrophages to release inflammatory mediators by upregulating MCP1/CCR2 and leading to expansion of the inflammatory responses.GSDMD knockout can reduce hepatocyte death and inflammatory responses,thus alleviating ALF.展开更多
文摘AIM: To investigate the association of the functional monocyte chemotactic protein-1 (MCP-1) promoter polymorphism (A-2518G) with spontaneous bacterial peritonitis (SBP).
文摘AIM:To investigate a genetic polymorphism of the monocyte chemotactic protein-1 (MCP-1 ) gene in patients with spontaneous bacterial peritonitis (SBP).METHODS:MCP-1 genotyping was performed in 23 patients with SBP and 83 cirrhotic control patients with non-infected ascites.RESULTS:The frequency of carriers of the G-allele was lower in SBP patients but this difference did not reach statistical significance. However,in the subgroup of patients with alcoholic cirrhosis (n=80),carriers of the G-allele were significantly less frequent in SBP-patients (38.1%) than in cirrhotic controls (67.8%,P=0.021). CONCLUSION:In patients with alcoholic liver cirrhosis,the-2518 MCP-1 genotype AA is a risk factor for the development of SBP.
文摘AIM: To investigate plasma Monocyte Chemotactic Protein-1 levels preoperatively in colorectal cancer(CRC) and benign patients and postoperatively after CRC resection.METHODS: A plasma bank was screened for minimally invasive colorectal cancer resection(MICR) for CRC and benign disease(BEN) patients for whom preoperative, early postoperative, and 1 or more late postoperative samples(postoperative day 7-27) were available. Monocyte chemotactic protein-1(MCP-1) levels(pg/mL) were determined via enzyme linked immuno-absorbent assay. RESULTS: One hundred and two CRC and 86 BEN patients were studied. The CRC patient's median preoperative MCP-1 level(283.1, CI: 256.0, 294.3) was higher than the BEN group level(227.5, CI: 200.2, 245.2; P = 0.0004). Vs CRC preoperative levels, elevated MCP-1 plasma levels were found on postoperative day 1(446.3, CI: 418.0, 520.1), postoperative day 3(342.7, CI: 320.4, 377.4), postoperative day 7-13(326.5, CI: 299.4, 354.1), postoperative day 14-20(361.6, CI: 287.8, 407.9), and postoperative day 21-27(318.1, CI: 287.2, 371.6; P < 0.001 for all). CONCLUSION: Preoperative MCP-1 levels were higher in CRC patients(vs BEN). After MICR for CRC, MCP-1 levels were elevated for 1 mo and may promote angiogenesis, cancer recurrence and metastasis.
文摘I read with great interest the article by Gbele et al published in issue 44 of World J Gastroenterol 2009.The results of their study indicate that-2518 Monocyte chemotactic protein-1(MCP-1)genotype AA is a risk factor for spontaneous bacterial peritonitis in patients with alcoholic cirrhosis.However,there are some items that need to be discussed.
文摘AIM:To explain the role of Monocyte chemotactic protein-1 (MCP-1) and soluble adhesion molecules in chronic hepatitis C during the treatment of interferon alpha (IFNα) 2 b and ribavirin (RBV). METHODS:Concentrations of MCP-1,soluble adhesion molecules intercellular adhesion molecule-1 (sICAM-1),sP- selectin,interleukin (IL) 6,and IL10 in serum were estimated in the group of 40 patients with chronic hepatitis C treated with IFNalpha2 b and RBV in 0,16,32,48 wk of the therapy, RESULTS:In chronic hepatitis C,before and during the treatment,the serum levels of MCP-1 and sP-selectin in responders were similar to those of healthy subjects.In non- responders (NR),MCP-1 increased in the course of IFNc^+RBV treatment,differences were statistically significant as compared to responders.MCP-1 correlated statistically with the activity of periportal inflammation (r=0.35,P<0.05) but not with staging of liver fibrosis,sICAM-1 positively correlated with inflammatory activity and fibrosis in NR.sP-selectin did not correlate with histological findings in the liver.The MCP-1 correlated with the soluble form of sP-selectin concentrations (r= 6,P<0.001) and with IL-10 level in NR (r=0.4,P<0.05).There was no correlation observed between the concentration of MCP-1 and sICAM-1,IL-6 during the treatment. CONCLUSION:MCP-1 concentration may be a prognostic marker of the efficacy of IFN+RBV therapy in patients with chronic hepatitis C.
文摘Objective: To study the chemotactic superfamily genes expression profiling of macrophage line U937 treated with monocyte chemoattractant protein-1 (MCP-1) using gene chip technique. Methods: Total RNA from macrophage line U937 (as control) and U937 with MCP-1 was extracted, made reverse transcript to cDNA and tested with gene expression chip HO2 human. Results: Some chemotactic-related gene expressions were changed in all analyzed genes. Regulated upon activation, normal T cell expressed and secreted (RANTES) was up-regulated over 2-fold and 7 chemotactic-related genes (CCR2, CCR5, CCL16, GROβ, GROγ, IL-8 and granulocyte chemotactic protein 2) were down-regulated over 2-fold in MCP-1 treated U937 cells at mRNA level. Conclusion: MCP-1 can influence some chemokines and receptors expression in macrophage in vitro, in which MCP-1 mainly down-regulates the chemotactic genes expression of those influencing neutrophilic granulocyte (GROβ, GROγ, IL-8 and granulocyte chemotactic protein 2). Another novel finding is that it can also down-regulate the mRNA level of CCR5, which plays a critical role in many disorders and illnesses.
基金Supported by the National Natural Science Foundation of China,No.81570543 and No.81560104
文摘BACKGROUND Massive hepatocyte death is the core event in acute liver failure(ALF).Gasdermin D(GSDMD)-mediated pyroptosis is a type of highly inflammatory cell death.However,the role of hepatocyte pyroptosis and its mechanisms of expanding inflammatory responses in ALF are unclear.AIM To investigate the role and mechanisms of GSDMD-mediated hepatocyte pyroptosis through in vitro and in vivo experiments.METHODS The expression of pyroptosis pathway-associated proteins in liver tissues from ALF patients and a hepatocyte injury model was examined by Western blot.GSDMD short hairpin RNA(shRNA)was used to investigate the effects of downregulation of GSDMD on monocyte chemotactic protein 1(MCP1)and its receptor CC chemokine receptor-2(CCR2)in vitro.For in vivo experiments,we used GSDMD knockout mice to investigate the role and mechanism of GSDMD in a D-galactose/lipopolysaccharide(D-Galn/LPS)-induced ALF mouse model.RESULTS The levels of pyroptosis pathway-associated proteins in liver tissue from ALF patients and a hepatocyte injury model increased significantly.The level of GSDMD-N protein increased most obviously(P<0.001).In vitro,downregulation of GSDMD by shRNA decreased the cell inhibition rate and the levels of MCP1/CCR2 proteins(P<0.01).In vivo,GSDMD knockout dramatically eliminated inflammatory damage in the liver and improved the survival of DGaln/LPS-induced ALF mice(P<0.001).Unlike the mechanism of immune cell pyroptosis that involves releasing interleukin(IL)-1βand IL-18,GSDMDmediated hepatocyte pyroptosis recruited macrophages via MCP1/CCR2 to aggravate hepatocyte death.However,this pathological process was inhibited after knocking down GSDMD.CONCLUSION GSDMD-mediated hepatocyte pyroptosis plays an important role in the pathogenesis of ALF,recruiting macrophages to release inflammatory mediators by upregulating MCP1/CCR2 and leading to expansion of the inflammatory responses.GSDMD knockout can reduce hepatocyte death and inflammatory responses,thus alleviating ALF.
