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
胰石蛋白(pancreatic stone protein, PSP),胰腺炎相关蛋白(pancreatitis-associated protein, PAP)和再生蛋白I (Regenerating protein I, Reg I)先后被独立地发现于胰腺的外分泌和内分泌疾病。随后的研究表明,PSP和RegI是同一种蛋白...胰石蛋白(pancreatic stone protein, PSP),胰腺炎相关蛋白(pancreatitis-associated protein, PAP)和再生蛋白I (Regenerating protein I, Reg I)先后被独立地发现于胰腺的外分泌和内分泌疾病。随后的研究表明,PSP和RegI是同一种蛋白并且其与PAP属于同一种蛋白家族。PSP/Reg和PAP具有相同的选择性特异性的胰酶切割位点,并被胰酶降解形成不溶性纤维。由于有假说提出PSP具有抑制胰石形成的功能,所以PSP又称为胰石蛋白(lithostathine)。但是胰石蛋白的抑制结石形成的功能受到了质疑。目前大部分研究结果表明PSP对于结石形成具有促进作用,而非抑制。展开更多
AIM: Pancreatic regenerating protein (regⅠ) stimulates pancreatic regeneration after pancreatectomy and is mitogenic to ductal andβ-cells. This suggests that regⅠand its receptor may play a role in recovery after p...AIM: Pancreatic regenerating protein (regⅠ) stimulates pancreatic regeneration after pancreatectomy and is mitogenic to ductal andβ-cells. This suggests that regⅠand its receptor may play a role in recovery after pancreatic injury. We hypothesized that regⅠand 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). RegⅠreceptor mRNA, serum regⅠprotein, and tissue regⅠprotein levels were determined by Northern analysis, enzyme-linked immunosorbent assay (ELISA), and Western analysis, respectively. Immunohistochemistry was used to localize changes in regⅠand its receptor. RESULTS: Serum amylase levels and histology confirmed necrotizing pancreatitis in taurocholate treated rats. There was no statistically significant change in serum regⅠconcentrations from controls. However, Western blot demonstrated increased tissue levels of regⅠat 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 regⅠreceptor mRNA expression with pancreatitis. Immunohistochemistry localized this increase to the ductal cells, islets, and acinar cells. CONCLUSION: Acute pancreatitis results in increased tissue regⅠprotein levels localized to the acinar and ductal cells, and a parallel threefold induction of regⅠreceptor in the ductal cells, islets, and acinar cells. These changes suggest that induction of reg I and its receptor may be important for recovery from acute pancreatitis.展开更多
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。
文摘胰石蛋白(pancreatic stone protein, PSP),胰腺炎相关蛋白(pancreatitis-associated protein, PAP)和再生蛋白I (Regenerating protein I, Reg I)先后被独立地发现于胰腺的外分泌和内分泌疾病。随后的研究表明,PSP和RegI是同一种蛋白并且其与PAP属于同一种蛋白家族。PSP/Reg和PAP具有相同的选择性特异性的胰酶切割位点,并被胰酶降解形成不溶性纤维。由于有假说提出PSP具有抑制胰石形成的功能,所以PSP又称为胰石蛋白(lithostathine)。但是胰石蛋白的抑制结石形成的功能受到了质疑。目前大部分研究结果表明PSP对于结石形成具有促进作用,而非抑制。
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 (regⅠ) stimulates pancreatic regeneration after pancreatectomy and is mitogenic to ductal andβ-cells. This suggests that regⅠand its receptor may play a role in recovery after pancreatic injury. We hypothesized that regⅠand 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). RegⅠreceptor mRNA, serum regⅠprotein, and tissue regⅠprotein levels were determined by Northern analysis, enzyme-linked immunosorbent assay (ELISA), and Western analysis, respectively. Immunohistochemistry was used to localize changes in regⅠand its receptor. RESULTS: Serum amylase levels and histology confirmed necrotizing pancreatitis in taurocholate treated rats. There was no statistically significant change in serum regⅠconcentrations from controls. However, Western blot demonstrated increased tissue levels of regⅠat 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 regⅠreceptor mRNA expression with pancreatitis. Immunohistochemistry localized this increase to the ductal cells, islets, and acinar cells. CONCLUSION: Acute pancreatitis results in increased tissue regⅠprotein levels localized to the acinar and ductal cells, and a parallel threefold induction of regⅠreceptor in the ductal cells, islets, and acinar cells. These changes suggest that induction of reg I and its receptor may be important for recovery from acute pancreatitis.
