The receptor for activated C kinase 1(RACK1)is a protein that plays a crucial role in various signaling pathways and is involved in the pathogenesis of Alzheimer's disease(AD),a prevalent neurodegenerative disease...The receptor for activated C kinase 1(RACK1)is a protein that plays a crucial role in various signaling pathways and is involved in the pathogenesis of Alzheimer's disease(AD),a prevalent neurodegenerative disease.RACK1 is highly expressed in neuronal cells of the central nervous system and regulates the pathogenesis of AD.Specifically,RACK1 is involved in regulation of the amyloid-β precursor protein processing through α-or β-secretase by binding to different protein kinase C isoforms.Additionally,RACK1 promotes synaptogenesis and synaptic plasticity by inhibiting N-methyl-D-aspartate receptors and activating gamma-aminobutyric acid A receptors,thereby preventing neuronal excitotoxicity.RACK1 also assembles inflammasomes that are involved in various neuroinflammatory pathways,such as nuclear factor-kappa B,tumor necrosis factor-alpha,and NOD-like receptor family pyrin domain-containing 3 pathways.The potential to design therapeutics that block amyloid-β accumulation and inflammation or precisely regulate synaptic plasticity represents an attractive therapeutic strategy,in which RACK1 is a potential target.In this review,we summarize the contribution of RACK1 to the pathogenesis of AD and its potential as a therapeutic target.展开更多
Objective: Multidetector-row computed tomography(MDCT) and serum tumor biomarkers are commonly used to evaluate the preoperative lymph node metastasis and the clinical staging of gastric cancer(GC). This study intends...Objective: Multidetector-row computed tomography(MDCT) and serum tumor biomarkers are commonly used to evaluate the preoperative lymph node metastasis and the clinical staging of gastric cancer(GC). This study intends to evaluate the clinical predictive value of MDCT and serum tumor biomarkers in lymph node metastasis of GC.Methods: The clinicopathologic data of 445 GC patients who underwent radical gastrectomy were retrospectively analyzed to evaluate the diagnostic value of MDCT and serum tumor biomarkers in lymph node metastatic staging of GC before surgery.Results: With the multinomial logistic regression analysis, the independent relative factors of lymph node metastasis of GC were identified as tumor size, depth of tumor invasion, vessel invasion, vascular embolus, and soft tissue invasion. The optimal critical value of the short diameter of lymph nodes detected by MDCT scanning for evaluation of preoperative lymph node metastasis was 6.0 mm, with 75.7% as predictive accuracy of lymph node metastasis compared to the postoperative pathological results of GC patients. In addition, the critical value of the short diameter of lymph nodes combined with serum tumor biomarkers [including carbohydrate antigen(CA)-724 and CA-199] could show an enhancement of predictive sensitivity of lymph node metastasis(up to 89.3%) before surgery.Conclusions: MDCT combined with serum tumor biomarkers should be adopted to improve preoperative sensitivity and accuracy of lymph node metastasis for GC patients.展开更多
Objective: To investigate the prognostic impact of D2-plus lymphadenectomy including the posterior(No. 8 p,No. 12 b/p, No. 13, and No. 14 v), and para-aortic(No. 16 a2, and No. 16 b1) lymph nodes(LNs) in subtotal gast...Objective: To investigate the prognostic impact of D2-plus lymphadenectomy including the posterior(No. 8 p,No. 12 b/p, No. 13, and No. 14 v), and para-aortic(No. 16 a2, and No. 16 b1) lymph nodes(LNs) in subtotal gastrectomy for advanced gastric antral carcinoma.Methods: A total of 203 patients with advanced gastric cancer(GC) located in the antrum, who underwent R0 gastrectomy with D2 or D2-plus lymphadenectomy between January 2003 and December 2011 were enrolled.Propensity score matching was used to reduce the strength of the confounding factors to accurately evaluate prognoses. The therapeutic value index(TVI) was calculate to evaluate the survival benefit of dissecting each LN station.Results: Of 102 patients with D2-plus lymphadenectomy, 21(20.59%) were pathologically identified as having LN metastases beyond the extent of D2 lymphadenectomy. After matching, the overall survival(OS) was significantly better in the D2-plus than the D2 group(P=0.030). In the multivariate survival analysis, D2-plus lymphadenectomy(hazard ratio, 0.516;P=0.006) was confirmed to significantly improve the survival rate. In the logistic regression analysis, p N stage [odds ratio(OR), 2.533;95% confidence interval(95% CI), 1.368-4.691;P=0.003] and extent of LNs metastasis(OR, 5.965;95% CI, 1.335-26.650;P=0.019) were identified as independent risk factors for LN metastases beyond the extent of D2 lymphadenectomy. The TVI of patient with metastasis to LNs station was 7.1(No. 8p), 5.7(No. 12p), 5.1(No. 13), and 7.1(both No. 16a2 and No. 16b1), respectively.Conclusions: D2-plus lymphadenectomy may improve the prognoses of some patients with advanced GC located in the antrum, especially for No. 8p, No. 12b, No. 13, and No. 16.展开更多
基金supported by grants from the National Natural Science Foundation of China(Grant No.82071395)the Natural Science Foundation of Chongqing(Grant Nos.cstc2021ycjh-bgzxm0186,cstc2020jcyj-zdxmX0004,and cstc2021jcyj-bsh0023)the CQMU Program for Youth Innovation in Future Medicine(Grant No.W0044).
文摘The receptor for activated C kinase 1(RACK1)is a protein that plays a crucial role in various signaling pathways and is involved in the pathogenesis of Alzheimer's disease(AD),a prevalent neurodegenerative disease.RACK1 is highly expressed in neuronal cells of the central nervous system and regulates the pathogenesis of AD.Specifically,RACK1 is involved in regulation of the amyloid-β precursor protein processing through α-or β-secretase by binding to different protein kinase C isoforms.Additionally,RACK1 promotes synaptogenesis and synaptic plasticity by inhibiting N-methyl-D-aspartate receptors and activating gamma-aminobutyric acid A receptors,thereby preventing neuronal excitotoxicity.RACK1 also assembles inflammasomes that are involved in various neuroinflammatory pathways,such as nuclear factor-kappa B,tumor necrosis factor-alpha,and NOD-like receptor family pyrin domain-containing 3 pathways.The potential to design therapeutics that block amyloid-β accumulation and inflammation or precisely regulate synaptic plasticity represents an attractive therapeutic strategy,in which RACK1 is a potential target.In this review,we summarize the contribution of RACK1 to the pathogenesis of AD and its potential as a therapeutic target.
基金supported in part by grants from the Programs of National Natural Science Foundation of China (No. 81572372)National Key Research and Development Program “major chronic non-infectious disease research” (No. 2016YFC1303202)National Key Research and Development Program “precision medicine research” (No. 2017YFC0908304)
文摘Objective: Multidetector-row computed tomography(MDCT) and serum tumor biomarkers are commonly used to evaluate the preoperative lymph node metastasis and the clinical staging of gastric cancer(GC). This study intends to evaluate the clinical predictive value of MDCT and serum tumor biomarkers in lymph node metastasis of GC.Methods: The clinicopathologic data of 445 GC patients who underwent radical gastrectomy were retrospectively analyzed to evaluate the diagnostic value of MDCT and serum tumor biomarkers in lymph node metastatic staging of GC before surgery.Results: With the multinomial logistic regression analysis, the independent relative factors of lymph node metastasis of GC were identified as tumor size, depth of tumor invasion, vessel invasion, vascular embolus, and soft tissue invasion. The optimal critical value of the short diameter of lymph nodes detected by MDCT scanning for evaluation of preoperative lymph node metastasis was 6.0 mm, with 75.7% as predictive accuracy of lymph node metastasis compared to the postoperative pathological results of GC patients. In addition, the critical value of the short diameter of lymph nodes combined with serum tumor biomarkers [including carbohydrate antigen(CA)-724 and CA-199] could show an enhancement of predictive sensitivity of lymph node metastasis(up to 89.3%) before surgery.Conclusions: MDCT combined with serum tumor biomarkers should be adopted to improve preoperative sensitivity and accuracy of lymph node metastasis for GC patients.
基金supported in part by grants from the Programs of National Natural Science Foundation of China(No.81572372)National Key Research and Development Program“major chronic non-infectious disease research”(No.2016YFC1303202)National Key Research and Development Program“precision medicine research”(No.2017YFC0908304).
文摘Objective: To investigate the prognostic impact of D2-plus lymphadenectomy including the posterior(No. 8 p,No. 12 b/p, No. 13, and No. 14 v), and para-aortic(No. 16 a2, and No. 16 b1) lymph nodes(LNs) in subtotal gastrectomy for advanced gastric antral carcinoma.Methods: A total of 203 patients with advanced gastric cancer(GC) located in the antrum, who underwent R0 gastrectomy with D2 or D2-plus lymphadenectomy between January 2003 and December 2011 were enrolled.Propensity score matching was used to reduce the strength of the confounding factors to accurately evaluate prognoses. The therapeutic value index(TVI) was calculate to evaluate the survival benefit of dissecting each LN station.Results: Of 102 patients with D2-plus lymphadenectomy, 21(20.59%) were pathologically identified as having LN metastases beyond the extent of D2 lymphadenectomy. After matching, the overall survival(OS) was significantly better in the D2-plus than the D2 group(P=0.030). In the multivariate survival analysis, D2-plus lymphadenectomy(hazard ratio, 0.516;P=0.006) was confirmed to significantly improve the survival rate. In the logistic regression analysis, p N stage [odds ratio(OR), 2.533;95% confidence interval(95% CI), 1.368-4.691;P=0.003] and extent of LNs metastasis(OR, 5.965;95% CI, 1.335-26.650;P=0.019) were identified as independent risk factors for LN metastases beyond the extent of D2 lymphadenectomy. The TVI of patient with metastasis to LNs station was 7.1(No. 8p), 5.7(No. 12p), 5.1(No. 13), and 7.1(both No. 16a2 and No. 16b1), respectively.Conclusions: D2-plus lymphadenectomy may improve the prognoses of some patients with advanced GC located in the antrum, especially for No. 8p, No. 12b, No. 13, and No. 16.