水通道蛋白1在急性坏死性胰腺炎大鼠胰腺组织的表达及其意义

Objective To study the expression of aquaporin 1 ( AQP1 ) in pancreas and its pathogenic role in rats with experimental acute necrotizing pancreatitis (ANP). Methods Forty-eight male Sprague-Dawley rats were randomly divided into two groups : control group ( n = 24 ) and ANP group ( n = 24). Six rats in each group were sacrificed at 3,6,12 and 18 h after induction of experimental models. Quantity of ascites and levels of serum amylases were measured at each time point. Serum AQPI was determined by ELISA. Pathological changes of pancreatic tissues were examined. Capillary permeability in pancreatic tissues was tested by Evans Blue (EB) extravasation method. AQPI expression in pancreatic tissues was detected by immunohistochemieal staining, Western blot and fluorescence quantitative polymerase chain reaction (FQ-PCR). Results (1) Serum amylase level at 3,6,12, and 18 h in control group was (1308±759) ,(1077±508), (1325±761),(1328±762) U/L,and that in ANP group was (9102± 2199), (8799±1634), (9398±1473), (9484±862) U/L respectively. The concentration of EB in pancreatic tissues at each time point in control group was (205.61±32.99), (141.46±27.18 ), (96.94± 26.79), (61.43±24.82) mg/L, and that in ANP group was ( 273.59±23.47 ), ( 253.51±31.68 ), (221.15±73.68 ), (185.28±42.35) ,respectively. There was significandy difference between two groups. Serum AQP1 level in control group at each point was ( 74.08±11.80), (78.49±9.06 ), (75.77± 7.37 ), ( 72.75±13.87 ) mg/L, and that in AN P group was (73.29±9.61 ), ( 62.85±7.28 ), (62.07± 4.39 ), (46.33±11.91 ) mg/L, respectively ( P < 0.01 ). ( 2 ) Protein expression of AQPI in pancreatic tissues detected by immunohistochemical staining in control group at each time point was 114.13±7.92, 122.39±7.99,145.98±6.48,113.98±6.48, and that in ANP group was 80.07±14.89,110.54± 4.45,103.77±10.48,99.18±6.95;Protein expression of AQP1 in pancreatic tissues detected by Western blot in control group at each time point was 1.19±0.33,1.02±0.25,0.90±0.33,1.06±0.20,and that in ANP group was 0.83±0.11,0.96±0.21,0. 58±0.28,0.72±0.14, respectively ( P < 0.05 ). ( 3 ) The mRNA level of AQP1 gene expressed in pancreas in control group at each time point was 0.91±0.22,1.01±0.83,0.48±0.23,0.61±0.51,and that in ANP group was 2.13±0.63,2.02±1.40, 2.07±0.86,2.49±2.47,respectively (P<0.01).Condusion The expression of AQP1 wasdown-reg-ulated in pancreas in rats with ANP,which might could play an important role in the pathogenesis of capil-lary leak syndrome.     

水通道蛋白1在急性坏死性胰腺炎大鼠胰腺组织的表达及其意义

Objective To study the expression of aquaporin 1 ( AQP1 ) in pancreas and its pathogenic role in rats with experimental acute necrotizing pancreatitis (ANP). Methods Forty-eight male Sprague-Dawley rats were randomly divided into two groups : control group ( n = 24 ) and ANP group ( n = 24). Six rats in each group were sacrificed at 3,6,12 and 18 h after induction of experimental models. Quantity of ascites and levels of serum amylases were measured at each time point. Serum AQPI was determined by ELISA. Pathological changes of pancreatic tissues were examined. Capillary permeability in pancreatic tissues was tested by Evans Blue (EB) extravasation method. AQPI expression in pancreatic tissues was detected by immunohistochemieal staining, Western blot and fluorescence quantitative polymerase chain reaction (FQ-PCR). Results (1) Serum amylase level at 3,6,12, and 18 h in control group was (1308±759) ,(1077±508), (1325±761),(1328±762) U/L,and that in ANP group was (9102± 2199), (8799±1634), (9398±1473), (9484±862) U/L respectively. The concentration of EB in pancreatic tissues at each time point in control group was (205.61±32.99), (141.46±27.18 ), (96.94± 26.79), (61.43±24.82) mg/L, and that in ANP group was ( 273.59±23.47 ), ( 253.51±31.68 ), (221.15±73.68 ), (185.28±42.35) ,respectively. There was significandy difference between two groups. Serum AQP1 level in control group at each point was ( 74.08±11.80), (78.49±9.06 ), (75.77± 7.37 ), ( 72.75±13.87 ) mg/L, and that in AN P group was (73.29±9.61 ), ( 62.85±7.28 ), (62.07± 4.39 ), (46.33±11.91 ) mg/L, respectively ( P < 0.01 ). ( 2 ) Protein expression of AQPI in pancreatic tissues detected by immunohistochemical staining in control group at each time point was 114.13±7.92, 122.39±7.99,145.98±6.48,113.98±6.48, and that in ANP group was 80.07±14.89,110.54± 4.45,103.77±10.48,99.18±6.95;Protein expression of AQP1 in pancreatic tissues detected by Western blot in control group at each time point was 1.19±0.33,1.02±0.25,0.90±0.33,1.06±0.20,and that in ANP group was 0.83±0.11,0.96±0.21,0. 58±0.28,0.72±0.14, respectively ( P < 0.05 ). ( 3 ) The mRNA level of AQP1 gene expressed in pancreas in control group at each time point was 0.91±0.22,1.01±0.83,0.48±0.23,0.61±0.51,and that in ANP group was 2.13±0.63,2.02±1.40, 2.07±0.86,2.49±2.47,respectively (P<0.01).Condusion The expression of AQP1 wasdown-reg-ulated in pancreas in rats with ANP,which might could play an important role in the pathogenesis of capil-lary leak syndrome.     

水通道蛋白1在急性坏死性胰腺炎大鼠胰腺组织的表达及其意义

Objective To study the expression of aquaporin 1 ( AQP1 ) in pancreas and its pathogenic role in rats with experimental acute necrotizing pancreatitis (ANP). Methods Forty-eight male Sprague-Dawley rats were randomly divided into two groups : control group ( n = 24 ) and ANP group ( n = 24). Six rats in each group were sacrificed at 3,6,12 and 18 h after induction of experimental models. Quantity of ascites and levels of serum amylases were measured at each time point. Serum AQPI was determined by ELISA. Pathological changes of pancreatic tissues were examined. Capillary permeability in pancreatic tissues was tested by Evans Blue (EB) extravasation method. AQPI expression in pancreatic tissues was detected by immunohistochemieal staining, Western blot and fluorescence quantitative polymerase chain reaction (FQ-PCR). Results (1) Serum amylase level at 3,6,12, and 18 h in control group was (1308±759) ,(1077±508), (1325±761),(1328±762) U/L,and that in ANP group was (9102± 2199), (8799±1634), (9398±1473), (9484±862) U/L respectively. The concentration of EB in pancreatic tissues at each time point in control group was (205.61±32.99), (141.46±27.18 ), (96.94± 26.79), (61.43±24.82) mg/L, and that in ANP group was ( 273.59±23.47 ), ( 253.51±31.68 ), (221.15±73.68 ), (185.28±42.35) ,respectively. There was significandy difference between two groups. Serum AQP1 level in control group at each point was ( 74.08±11.80), (78.49±9.06 ), (75.77± 7.37 ), ( 72.75±13.87 ) mg/L, and that in AN P group was (73.29±9.61 ), ( 62.85±7.28 ), (62.07± 4.39 ), (46.33±11.91 ) mg/L, respectively ( P < 0.01 ). ( 2 ) Protein expression of AQPI in pancreatic tissues detected by immunohistochemical staining in control group at each time point was 114.13±7.92, 122.39±7.99,145.98±6.48,113.98±6.48, and that in ANP group was 80.07±14.89,110.54± 4.45,103.77±10.48,99.18±6.95;Protein expression of AQP1 in pancreatic tissues detected by Western blot in control group at each time point was 1.19±0.33,1.02±0.25,0.90±0.33,1.06±0.20,and that in ANP group was 0.83±0.11,0.96±0.21,0. 58±0.28,0.72±0.14, respectively ( P < 0.05 ). ( 3 ) The mRNA level of AQP1 gene expressed in pancreas in control group at each time point was 0.91±0.22,1.01±0.83,0.48±0.23,0.61±0.51,and that in ANP group was 2.13±0.63,2.02±1.40, 2.07±0.86,2.49±2.47,respectively (P<0.01).Condusion The expression of AQP1 wasdown-reg-ulated in pancreas in rats with ANP,which might could play an important role in the pathogenesis of capil-lary leak syndrome.     

水通道蛋白1在急性坏死性胰腺炎大鼠胰腺组织的表达及其意义

Objective To study the expression of aquaporin 1 ( AQP1 ) in pancreas and its pathogenic role in rats with experimental acute necrotizing pancreatitis (ANP). Methods Forty-eight male Sprague-Dawley rats were randomly divided into two groups : control group ( n = 24 ) and ANP group ( n = 24). Six rats in each group were sacrificed at 3,6,12 and 18 h after induction of experimental models. Quantity of ascites and levels of serum amylases were measured at each time point. Serum AQPI was determined by ELISA. Pathological changes of pancreatic tissues were examined. Capillary permeability in pancreatic tissues was tested by Evans Blue (EB) extravasation method. AQPI expression in pancreatic tissues was detected by immunohistochemieal staining, Western blot and fluorescence quantitative polymerase chain reaction (FQ-PCR). Results (1) Serum amylase level at 3,6,12, and 18 h in control group was (1308±759) ,(1077±508), (1325±761),(1328±762) U/L,and that in ANP group was (9102± 2199), (8799±1634), (9398±1473), (9484±862) U/L respectively. The concentration of EB in pancreatic tissues at each time point in control group was (205.61±32.99), (141.46±27.18 ), (96.94± 26.79), (61.43±24.82) mg/L, and that in ANP group was ( 273.59±23.47 ), ( 253.51±31.68 ), (221.15±73.68 ), (185.28±42.35) ,respectively. There was significandy difference between two groups. Serum AQP1 level in control group at each point was ( 74.08±11.80), (78.49±9.06 ), (75.77± 7.37 ), ( 72.75±13.87 ) mg/L, and that in AN P group was (73.29±9.61 ), ( 62.85±7.28 ), (62.07± 4.39 ), (46.33±11.91 ) mg/L, respectively ( P < 0.01 ). ( 2 ) Protein expression of AQPI in pancreatic tissues detected by immunohistochemical staining in control group at each time point was 114.13±7.92, 122.39±7.99,145.98±6.48,113.98±6.48, and that in ANP group was 80.07±14.89,110.54± 4.45,103.77±10.48,99.18±6.95;Protein expression of AQP1 in pancreatic tissues detected by Western blot in control group at each time point was 1.19±0.33,1.02±0.25,0.90±0.33,1.06±0.20,and that in ANP group was 0.83±0.11,0.96±0.21,0. 58±0.28,0.72±0.14, respectively ( P < 0.05 ). ( 3 ) The mRNA level of AQP1 gene expressed in pancreas in control group at each time point was 0.91±0.22,1.01±0.83,0.48±0.23,0.61±0.51,and that in ANP group was 2.13±0.63,2.02±1.40, 2.07±0.86,2.49±2.47,respectively (P<0.01).Condusion The expression of AQP1 wasdown-reg-ulated in pancreas in rats with ANP,which might could play an important role in the pathogenesis of capil-lary leak syndrome.     

水通道蛋白1在急性坏死性胰腺炎大鼠胰腺组织的表达及其意义

Objective To study the expression of aquaporin 1 ( AQP1 ) in pancreas and its pathogenic role in rats with experimental acute necrotizing pancreatitis (ANP). Methods Forty-eight male Sprague-Dawley rats were randomly divided into two groups : control group ( n = 24 ) and ANP group ( n = 24). Six rats in each group were sacrificed at 3,6,12 and 18 h after induction of experimental models. Quantity of ascites and levels of serum amylases were measured at each time point. Serum AQPI was determined by ELISA. Pathological changes of pancreatic tissues were examined. Capillary permeability in pancreatic tissues was tested by Evans Blue (EB) extravasation method. AQPI expression in pancreatic tissues was detected by immunohistochemieal staining, Western blot and fluorescence quantitative polymerase chain reaction (FQ-PCR). Results (1) Serum amylase level at 3,6,12, and 18 h in control group was (1308±759) ,(1077±508), (1325±761),(1328±762) U/L,and that in ANP group was (9102± 2199), (8799±1634), (9398±1473), (9484±862) U/L respectively. The concentration of EB in pancreatic tissues at each time point in control group was (205.61±32.99), (141.46±27.18 ), (96.94± 26.79), (61.43±24.82) mg/L, and that in ANP group was ( 273.59±23.47 ), ( 253.51±31.68 ), (221.15±73.68 ), (185.28±42.35) ,respectively. There was significandy difference between two groups. Serum AQP1 level in control group at each point was ( 74.08±11.80), (78.49±9.06 ), (75.77± 7.37 ), ( 72.75±13.87 ) mg/L, and that in AN P group was (73.29±9.61 ), ( 62.85±7.28 ), (62.07± 4.39 ), (46.33±11.91 ) mg/L, respectively ( P < 0.01 ). ( 2 ) Protein expression of AQPI in pancreatic tissues detected by immunohistochemical staining in control group at each time point was 114.13±7.92, 122.39±7.99,145.98±6.48,113.98±6.48, and that in ANP group was 80.07±14.89,110.54± 4.45,103.77±10.48,99.18±6.95;Protein expression of AQP1 in pancreatic tissues detected by Western blot in control group at each time point was 1.19±0.33,1.02±0.25,0.90±0.33,1.06±0.20,and that in ANP group was 0.83±0.11,0.96±0.21,0. 58±0.28,0.72±0.14, respectively ( P < 0.05 ). ( 3 ) The mRNA level of AQP1 gene expressed in pancreas in control group at each time point was 0.91±0.22,1.01±0.83,0.48±0.23,0.61±0.51,and that in ANP group was 2.13±0.63,2.02±1.40, 2.07±0.86,2.49±2.47,respectively (P<0.01).Condusion The expression of AQP1 wasdown-reg-ulated in pancreas in rats with ANP,which might could play an important role in the pathogenesis of capil-lary leak syndrome.     

水通道蛋白1在急性坏死性胰腺炎大鼠胰腺组织的表达及其意义

Objective To study the expression of aquaporin 1 ( AQP1 ) in pancreas and its pathogenic role in rats with experimental acute necrotizing pancreatitis (ANP). Methods Forty-eight male Sprague-Dawley rats were randomly divided into two groups : control group ( n = 24 ) and ANP group ( n = 24). Six rats in each group were sacrificed at 3,6,12 and 18 h after induction of experimental models. Quantity of ascites and levels of serum amylases were measured at each time point. Serum AQPI was determined by ELISA. Pathological changes of pancreatic tissues were examined. Capillary permeability in pancreatic tissues was tested by Evans Blue (EB) extravasation method. AQPI expression in pancreatic tissues was detected by immunohistochemieal staining, Western blot and fluorescence quantitative polymerase chain reaction (FQ-PCR). Results (1) Serum amylase level at 3,6,12, and 18 h in control group was (1308±759) ,(1077±508), (1325±761),(1328±762) U/L,and that in ANP group was (9102± 2199), (8799±1634), (9398±1473), (9484±862) U/L respectively. The concentration of EB in pancreatic tissues at each time point in control group was (205.61±32.99), (141.46±27.18 ), (96.94± 26.79), (61.43±24.82) mg/L, and that in ANP group was ( 273.59±23.47 ), ( 253.51±31.68 ), (221.15±73.68 ), (185.28±42.35) ,respectively. There was significandy difference between two groups. Serum AQP1 level in control group at each point was ( 74.08±11.80), (78.49±9.06 ), (75.77± 7.37 ), ( 72.75±13.87 ) mg/L, and that in AN P group was (73.29±9.61 ), ( 62.85±7.28 ), (62.07± 4.39 ), (46.33±11.91 ) mg/L, respectively ( P < 0.01 ). ( 2 ) Protein expression of AQPI in pancreatic tissues detected by immunohistochemical staining in control group at each time point was 114.13±7.92, 122.39±7.99,145.98±6.48,113.98±6.48, and that in ANP group was 80.07±14.89,110.54± 4.45,103.77±10.48,99.18±6.95;Protein expression of AQP1 in pancreatic tissues detected by Western blot in control group at each time point was 1.19±0.33,1.02±0.25,0.90±0.33,1.06±0.20,and that in ANP group was 0.83±0.11,0.96±0.21,0. 58±0.28,0.72±0.14, respectively ( P < 0.05 ). ( 3 ) The mRNA level of AQP1 gene expressed in pancreas in control group at each time point was 0.91±0.22,1.01±0.83,0.48±0.23,0.61±0.51,and that in ANP group was 2.13±0.63,2.02±1.40, 2.07±0.86,2.49±2.47,respectively (P<0.01).Condusion The expression of AQP1 wasdown-reg-ulated in pancreas in rats with ANP,which might could play an important role in the pathogenesis of capil-lary leak syndrome.     

水通道蛋白1在急性坏死性胰腺炎大鼠胰腺组织的表达及其意义

Objective To study the expression of aquaporin 1 ( AQP1 ) in pancreas and its pathogenic role in rats with experimental acute necrotizing pancreatitis (ANP). Methods Forty-eight male Sprague-Dawley rats were randomly divided into two groups : control group ( n = 24 ) and ANP group ( n = 24). Six rats in each group were sacrificed at 3,6,12 and 18 h after induction of experimental models. Quantity of ascites and levels of serum amylases were measured at each time point. Serum AQPI was determined by ELISA. Pathological changes of pancreatic tissues were examined. Capillary permeability in pancreatic tissues was tested by Evans Blue (EB) extravasation method. AQPI expression in pancreatic tissues was detected by immunohistochemieal staining, Western blot and fluorescence quantitative polymerase chain reaction (FQ-PCR). Results (1) Serum amylase level at 3,6,12, and 18 h in control group was (1308±759) ,(1077±508), (1325±761),(1328±762) U/L,and that in ANP group was (9102± 2199), (8799±1634), (9398±1473), (9484±862) U/L respectively. The concentration of EB in pancreatic tissues at each time point in control group was (205.61±32.99), (141.46±27.18 ), (96.94± 26.79), (61.43±24.82) mg/L, and that in ANP group was ( 273.59±23.47 ), ( 253.51±31.68 ), (221.15±73.68 ), (185.28±42.35) ,respectively. There was significandy difference between two groups. Serum AQP1 level in control group at each point was ( 74.08±11.80), (78.49±9.06 ), (75.77± 7.37 ), ( 72.75±13.87 ) mg/L, and that in AN P group was (73.29±9.61 ), ( 62.85±7.28 ), (62.07± 4.39 ), (46.33±11.91 ) mg/L, respectively ( P < 0.01 ). ( 2 ) Protein expression of AQPI in pancreatic tissues detected by immunohistochemical staining in control group at each time point was 114.13±7.92, 122.39±7.99,145.98±6.48,113.98±6.48, and that in ANP group was 80.07±14.89,110.54± 4.45,103.77±10.48,99.18±6.95;Protein expression of AQP1 in pancreatic tissues detected by Western blot in control group at each time point was 1.19±0.33,1.02±0.25,0.90±0.33,1.06±0.20,and that in ANP group was 0.83±0.11,0.96±0.21,0. 58±0.28,0.72±0.14, respectively ( P < 0.05 ). ( 3 ) The mRNA level of AQP1 gene expressed in pancreas in control group at each time point was 0.91±0.22,1.01±0.83,0.48±0.23,0.61±0.51,and that in ANP group was 2.13±0.63,2.02±1.40, 2.07±0.86,2.49±2.47,respectively (P<0.01).Condusion The expression of AQP1 wasdown-reg-ulated in pancreas in rats with ANP,which might could play an important role in the pathogenesis of capil-lary leak syndrome.     

水通道蛋白1在急性坏死性胰腺炎大鼠胰腺组织的表达及其意义

Objective To study the expression of aquaporin 1 ( AQP1 ) in pancreas and its pathogenic role in rats with experimental acute necrotizing pancreatitis (ANP). Methods Forty-eight male Sprague-Dawley rats were randomly divided into two groups : control group ( n = 24 ) and ANP group ( n = 24). Six rats in each group were sacrificed at 3,6,12 and 18 h after induction of experimental models. Quantity of ascites and levels of serum amylases were measured at each time point. Serum AQPI was determined by ELISA. Pathological changes of pancreatic tissues were examined. Capillary permeability in pancreatic tissues was tested by Evans Blue (EB) extravasation method. AQPI expression in pancreatic tissues was detected by immunohistochemieal staining, Western blot and fluorescence quantitative polymerase chain reaction (FQ-PCR). Results (1) Serum amylase level at 3,6,12, and 18 h in control group was (1308±759) ,(1077±508), (1325±761),(1328±762) U/L,and that in ANP group was (9102± 2199), (8799±1634), (9398±1473), (9484±862) U/L respectively. The concentration of EB in pancreatic tissues at each time point in control group was (205.61±32.99), (141.46±27.18 ), (96.94± 26.79), (61.43±24.82) mg/L, and that in ANP group was ( 273.59±23.47 ), ( 253.51±31.68 ), (221.15±73.68 ), (185.28±42.35) ,respectively. There was significandy difference between two groups. Serum AQP1 level in control group at each point was ( 74.08±11.80), (78.49±9.06 ), (75.77± 7.37 ), ( 72.75±13.87 ) mg/L, and that in AN P group was (73.29±9.61 ), ( 62.85±7.28 ), (62.07± 4.39 ), (46.33±11.91 ) mg/L, respectively ( P < 0.01 ). ( 2 ) Protein expression of AQPI in pancreatic tissues detected by immunohistochemical staining in control group at each time point was 114.13±7.92, 122.39±7.99,145.98±6.48,113.98±6.48, and that in ANP group was 80.07±14.89,110.54± 4.45,103.77±10.48,99.18±6.95;Protein expression of AQP1 in pancreatic tissues detected by Western blot in control group at each time point was 1.19±0.33,1.02±0.25,0.90±0.33,1.06±0.20,and that in ANP group was 0.83±0.11,0.96±0.21,0. 58±0.28,0.72±0.14, respectively ( P < 0.05 ). ( 3 ) The mRNA level of AQP1 gene expressed in pancreas in control group at each time point was 0.91±0.22,1.01±0.83,0.48±0.23,0.61±0.51,and that in ANP group was 2.13±0.63,2.02±1.40, 2.07±0.86,2.49±2.47,respectively (P<0.01).Condusion The expression of AQP1 wasdown-reg-ulated in pancreas in rats with ANP,which might could play an important role in the pathogenesis of capil-lary leak syndrome.     

水通道蛋白1在急性坏死性胰腺炎大鼠胰腺组织的表达及其意义

Objective To study the expression of aquaporin 1 ( AQP1 ) in pancreas and its pathogenic role in rats with experimental acute necrotizing pancreatitis (ANP). Methods Forty-eight male Sprague-Dawley rats were randomly divided into two groups : control group ( n = 24 ) and ANP group ( n = 24). Six rats in each group were sacrificed at 3,6,12 and 18 h after induction of experimental models. Quantity of ascites and levels of serum amylases were measured at each time point. Serum AQPI was determined by ELISA. Pathological changes of pancreatic tissues were examined. Capillary permeability in pancreatic tissues was tested by Evans Blue (EB) extravasation method. AQPI expression in pancreatic tissues was detected by immunohistochemieal staining, Western blot and fluorescence quantitative polymerase chain reaction (FQ-PCR). Results (1) Serum amylase level at 3,6,12, and 18 h in control group was (1308±759) ,(1077±508), (1325±761),(1328±762) U/L,and that in ANP group was (9102± 2199), (8799±1634), (9398±1473), (9484±862) U/L respectively. The concentration of EB in pancreatic tissues at each time point in control group was (205.61±32.99), (141.46±27.18 ), (96.94± 26.79), (61.43±24.82) mg/L, and that in ANP group was ( 273.59±23.47 ), ( 253.51±31.68 ), (221.15±73.68 ), (185.28±42.35) ,respectively. There was significandy difference between two groups. Serum AQP1 level in control group at each point was ( 74.08±11.80), (78.49±9.06 ), (75.77± 7.37 ), ( 72.75±13.87 ) mg/L, and that in AN P group was (73.29±9.61 ), ( 62.85±7.28 ), (62.07± 4.39 ), (46.33±11.91 ) mg/L, respectively ( P < 0.01 ). ( 2 ) Protein expression of AQPI in pancreatic tissues detected by immunohistochemical staining in control group at each time point was 114.13±7.92, 122.39±7.99,145.98±6.48,113.98±6.48, and that in ANP group was 80.07±14.89,110.54± 4.45,103.77±10.48,99.18±6.95;Protein expression of AQP1 in pancreatic tissues detected by Western blot in control group at each time point was 1.19±0.33,1.02±0.25,0.90±0.33,1.06±0.20,and that in ANP group was 0.83±0.11,0.96±0.21,0. 58±0.28,0.72±0.14, respectively ( P < 0.05 ). ( 3 ) The mRNA level of AQP1 gene expressed in pancreas in control group at each time point was 0.91±0.22,1.01±0.83,0.48±0.23,0.61±0.51,and that in ANP group was 2.13±0.63,2.02±1.40, 2.07±0.86,2.49±2.47,respectively (P<0.01).Condusion The expression of AQP1 wasdown-reg-ulated in pancreas in rats with ANP,which might could play an important role in the pathogenesis of capil-lary leak syndrome.     

脑红蛋白在内毒素脑损伤大鼠模型中的表达变化

Objective To investigate the expression of neuroglobin(Ngb) in frontal cortex, cere-brospinal fluid (CSF) and serum in rats with brain injury induced by LPS and to elucidate its significance. Methods Seventy adult Sprague-Dawley rats were randomly divided into LPS (n = 60, with injection of 0.1 mg/kg LPS into cistern) and control (C, n =10, with injection of equal volume of isotonic saline into cistern) groups, with 10 rats in each group. The plasma, CSF as well as frontal cortex from sacrificed rats were collected in LPS group at 3, 6, 12, 24, 48, 72 post injection hour (PIH), with 10 rats at each time point. The protein expression of Ngb was measured by enzyme-linked immunosorbent assay(ELISA) and Western blot. Expression of Ngb in frontal cortex was determined by SP. Water content of frontal cortex was assessed by drying method. The correlation among Ngb contents in serum, CSF, frontal cortex and water con-tent of frontal cortex was analyzed with multiple comparison. Results Ngb expression ( by ELISA) : Ngb expression of frontal cortex, CSF, and serum in LPS group was higher than that in C group at each time point, and it peaked at 48 PBH (35.4±3.9, 22.7±3.1, 14.4±2.8 ng/mL, respectively, P <0.01). Ngb ex-pression ( by Western blot) : Ngb protein with relative molecular mass of 17×103 was observed in each group. Ngb expression detected by Western blot was similar to that detected by ELISA. Brain water content was significantly greater in LPS group than that of C group at 6-72 PIH ( P<0.01) , and it peaked at 48 PBH ( 83.3±1.9) %. Ngb contents in serum, CSF, frontal cortex, and water content of frontal cortex were positively correlated with muhipie comparison (γ=0.631-0.719, P<0.01). Conclusions Up-regu-lation of Ngb expression in brain injury induced by LPS is correlated with duration after challenge of LPS.     

Faculty of Anaesthetists of the Royal College of Surgeons of Ireland

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