AIM： Pancreatic regenerating protein （reg Ⅰ ） stimulates pancreatic regeneration after pancreatectomy and is mitogenic to ductal and 13-cells. This suggests that reg Ⅰand its receptor may play a role in recovery ...AIM： Pancreatic regenerating protein （reg Ⅰ ） stimulates pancreatic regeneration after pancreatectomy and is mitogenic to ductal and 13-cells. This suggests that reg Ⅰand its receptor may play a role in recovery after pancreatic injury. We hypothesized that reg Ⅰ and its receptor are induced in acute pancreatitis. METHODS： Acute pancreatitis was induced in male Wistar rats by retrograde injection of 3% sodium taurocholate into the pancreatic duct. Pancreata and serum were collected 12, 24, and 36 hours after injection and from normal controls （4 rats/group）. Reg Ⅰ receptor mRNA, serum reg Ⅰ protein, and tissue reg Ⅰ protein levels were determined by Northern analysis, enzymelinked immunosorbent assay （ELISA）, and Western analysis, respectively. Immunohistochemistry was used to localize changes in reg Ⅰ and its receptor. RESULTS： Serum amylase levels and histology confirmed necrotizing pancreatitis in taurocholate treated rats. There was no statistically significant change in serum reg Ⅰ concentrations from controls. However, Western blot demonstrated increased tissue levels of reg Ⅰ at 24 and 36 h. This increase was localized primarily to the acinar cells and the ductal cells by immunohistochemistry. Northern blot demonstrated a significant increase in reg Ⅰ receptor mRNA expression with pancreatitis. Immunohistochemistry localized this increase to the ductal cells, islets, and acinar cells. CONCLUSION： Acute pancreatitis results in increased tissue reg Ⅰ protein levels localized to the acinar and ductal cells, and a parallel threefold induction of reg Ⅰ receptor in the ductal cells, islets, and acinar cells. These changes suggest that induction of reg Ⅰand its receptor may be important for recovery from acute pancreatitis.展开更多
目的检测不同临床阶段2型糖尿病(T2DM)患者胰腺再生蛋白(Reg)水平,分析血清Reg与T2DM及其慢性并发症的关系。方法选取2012年9月—2014年12月东南大学附属中大医院及南京6个社区医院(红山、玄武、莫愁、夫子庙、中华门和徐家巷)收治的门...目的检测不同临床阶段2型糖尿病(T2DM)患者胰腺再生蛋白(Reg)水平,分析血清Reg与T2DM及其慢性并发症的关系。方法选取2012年9月—2014年12月东南大学附属中大医院及南京6个社区医院(红山、玄武、莫愁、夫子庙、中华门和徐家巷)收治的门诊、住院患者以及健康体检者,根据诊断标准与排除标准共纳入950名参与者,将其分为5组:健康对照组(HC组,n=97)、高危人群组(HR组,n=209)、糖调节受损组(IGR组,n=292)、初发T2DM组(Onset组,n=188)和长程T2DM无并发症组(LD-无并发症组,n=94)、长程T2DM有并发症组(LD-有并发症组,n=70)。采用酶联免疫吸附法(ELISA)测定受试者清晨空腹状态下的血清Reg水平,分析Reg与T2DM病程及慢性并发症的关系。结果各组年龄、糖尿病家族史、吸烟史、收缩压比较,差异均无统计学意义(P>0.05);各组性别、体质指数(BMI)、舒张压、空腹血糖(FPG)、餐后2 h血糖(2 h PG)、糖化血红蛋白(Hb A1c)、Reg比较,差异均有统计学意义(P<0.05)。T2DM患者血清Reg水平与病程呈正相关(rs=0.284,P<0.01)。在所有受试者中血清Reg水平与Hb A1c、FPG、2 h PG呈正相关(rs=0.188、0.115、0.111,P<0.001)。Reg诊断T2DM的ROC曲线下面积为0.640〔95%CI(0.605,0.674)〕,最佳截点为25 ng/ml,其灵敏度为46%,特异度为76%,阳性似然比为1.92,阴性似然比为0.71。Reg诊断T2DM慢性并发症的ROC曲线下面积为0.754〔95%CI(0.694,0.813)〕,最佳截点为27 ng/ml,其灵敏度为65%,特异度为74%,阳性似然比为2.50,阴性似然比为0.47。结论检测血清Reg水平有助于预测T2DM及其慢性并发症,Reg将来可能成为T2DM及其进展的一种预测因子。展开更多
基金Supported by NIDDK R01 DK.54511 (MZ), R01 DK060106 (BD) NIH Digestive Disease Research Core Center (DDRCC) grant P30 DK52574 (BD)
文摘AIM： Pancreatic regenerating protein （reg Ⅰ ） stimulates pancreatic regeneration after pancreatectomy and is mitogenic to ductal and 13-cells. This suggests that reg Ⅰand its receptor may play a role in recovery after pancreatic injury. We hypothesized that reg Ⅰ and its receptor are induced in acute pancreatitis. METHODS： Acute pancreatitis was induced in male Wistar rats by retrograde injection of 3% sodium taurocholate into the pancreatic duct. Pancreata and serum were collected 12, 24, and 36 hours after injection and from normal controls （4 rats/group）. Reg Ⅰ receptor mRNA, serum reg Ⅰ protein, and tissue reg Ⅰ protein levels were determined by Northern analysis, enzymelinked immunosorbent assay （ELISA）, and Western analysis, respectively. Immunohistochemistry was used to localize changes in reg Ⅰ and its receptor. RESULTS： Serum amylase levels and histology confirmed necrotizing pancreatitis in taurocholate treated rats. There was no statistically significant change in serum reg Ⅰ concentrations from controls. However, Western blot demonstrated increased tissue levels of reg Ⅰ at 24 and 36 h. This increase was localized primarily to the acinar cells and the ductal cells by immunohistochemistry. Northern blot demonstrated a significant increase in reg Ⅰ receptor mRNA expression with pancreatitis. Immunohistochemistry localized this increase to the ductal cells, islets, and acinar cells. CONCLUSION： Acute pancreatitis results in increased tissue reg Ⅰ protein levels localized to the acinar and ductal cells, and a parallel threefold induction of reg Ⅰ receptor in the ductal cells, islets, and acinar cells. These changes suggest that induction of reg Ⅰand its receptor may be important for recovery from acute pancreatitis.
文摘目的检测不同临床阶段2型糖尿病(T2DM)患者胰腺再生蛋白(Reg)水平,分析血清Reg与T2DM及其慢性并发症的关系。方法选取2012年9月—2014年12月东南大学附属中大医院及南京6个社区医院(红山、玄武、莫愁、夫子庙、中华门和徐家巷)收治的门诊、住院患者以及健康体检者,根据诊断标准与排除标准共纳入950名参与者,将其分为5组:健康对照组(HC组,n=97)、高危人群组(HR组,n=209)、糖调节受损组(IGR组,n=292)、初发T2DM组(Onset组,n=188)和长程T2DM无并发症组(LD-无并发症组,n=94)、长程T2DM有并发症组(LD-有并发症组,n=70)。采用酶联免疫吸附法(ELISA)测定受试者清晨空腹状态下的血清Reg水平,分析Reg与T2DM病程及慢性并发症的关系。结果各组年龄、糖尿病家族史、吸烟史、收缩压比较,差异均无统计学意义(P>0.05);各组性别、体质指数(BMI)、舒张压、空腹血糖(FPG)、餐后2 h血糖(2 h PG)、糖化血红蛋白(Hb A1c)、Reg比较,差异均有统计学意义(P<0.05)。T2DM患者血清Reg水平与病程呈正相关(rs=0.284,P<0.01)。在所有受试者中血清Reg水平与Hb A1c、FPG、2 h PG呈正相关(rs=0.188、0.115、0.111,P<0.001)。Reg诊断T2DM的ROC曲线下面积为0.640〔95%CI(0.605,0.674)〕,最佳截点为25 ng/ml,其灵敏度为46%,特异度为76%,阳性似然比为1.92,阴性似然比为0.71。Reg诊断T2DM慢性并发症的ROC曲线下面积为0.754〔95%CI(0.694,0.813)〕,最佳截点为27 ng/ml,其灵敏度为65%,特异度为74%,阳性似然比为2.50,阴性似然比为0.47。结论检测血清Reg水平有助于预测T2DM及其慢性并发症,Reg将来可能成为T2DM及其进展的一种预测因子。
