Palaeoclimatic and palaeoenvironmental reconstructions of the Cryogenian Period have attracted attention in relation to the debated“Snowball Earth”hypothesis and the early evolution of metazoan life.The carbon cycle...Palaeoclimatic and palaeoenvironmental reconstructions of the Cryogenian Period have attracted attention in relation to the debated“Snowball Earth”hypothesis and the early evolution of metazoan life.The carbon cycle and redox conditions of the Sturtian-Marinoan non-glacial interval have been subjected to much controversy in the past decades because of the lack of a high-resolution stratigraphic correlation scheme.As one of the typical Sturtian-Marinoan interglacial deposits,the Datangpo Formation was widely distributed in South China with shales continuously deposited.The previous zircon dating data of the Datangpo Formation provide important ages for global constrain of the Sturtian-Marinoan non-glacial interval.Here we present a high-resolution straitigraphic study of the organic carbon isotopes of the Datangpo Formation from a drill core section in northern Guizhou Province.Based on measured episodicδ^(13)C_(org) perturbations,three positive shifts and three negative excursions are identified.Aδ^(13)C_(org)-based chemostratigraphic correlation scheme is proposed herein that works well for the Datangpo Formation regionally.Meanwhile,theδ^(13)C_(org) vertical gradients changed dynamically throughout the formation.This discovery implies that a significant ocean circulation overturn might have occurred in the upper Datangpo Formation,coinciding with the potential oxygenation.展开更多
Background:Inflammation is often related to cancer,and several inflammatory scores have been established to predict the prognosis of various types of cancer.Our study aimed to determine the prognostic value of the pre...Background:Inflammation is often related to cancer,and several inflammatory scores have been established to predict the prognosis of various types of cancer.Our study aimed to determine the prognostic value of the preoperative lymphocyte to C-reactive protein ratio(LCR)for predicting postoperative outcomes in patients with resectable gallbladder cancer(GBC).Methods:A retrospective analysis of 104 GBC patients who received curative surgery at Xinhua Hospital,Affiliated to Shanghai Jiao Tong University School of Medicine from January 2000 to December 2016 was performed.A time-dependent receiver operating characteristic curve was constructed to evaluate the accuracy of different markers.Univariate and multivariate Cox proportional hazard models were used to define factors associated with overall survival.Results:Among the assessed variables,the preoperative LCR showed the highest accuracy in predicting the overall survival of GBC patients(AUC:0.736).Decreased preoperative LCR was significantly associated with advanced tumor stage,including tumor invasion(P=0.018),lymph node metastasis(P=0.011)and TNM stage(P=0.022).A low preoperative LCR(cutoff threshold=145.5)was an independent risk factor for overall survival in patients with resectable GBC(P<0.001).Conclusions:The preoperative LCR is a novel and valuable prognostic indicator of postoperative survival in patients with resectable GBC.展开更多
基金Special thanks to Erik Tihelka for improving the English.This study was supported by the National Natural Science Foundation of China(41602126)the China Geological Survey(DD20160018,DD20221661)+1 种基金the Second Tibetan Plateau Scientific Expedition and Research Program(2019QZKK0706)Liu Bao-jun Academician Research Funds subsidized by Chengdu Center of China Geological Survey.
文摘Palaeoclimatic and palaeoenvironmental reconstructions of the Cryogenian Period have attracted attention in relation to the debated“Snowball Earth”hypothesis and the early evolution of metazoan life.The carbon cycle and redox conditions of the Sturtian-Marinoan non-glacial interval have been subjected to much controversy in the past decades because of the lack of a high-resolution stratigraphic correlation scheme.As one of the typical Sturtian-Marinoan interglacial deposits,the Datangpo Formation was widely distributed in South China with shales continuously deposited.The previous zircon dating data of the Datangpo Formation provide important ages for global constrain of the Sturtian-Marinoan non-glacial interval.Here we present a high-resolution straitigraphic study of the organic carbon isotopes of the Datangpo Formation from a drill core section in northern Guizhou Province.Based on measured episodicδ^(13)C_(org) perturbations,three positive shifts and three negative excursions are identified.Aδ^(13)C_(org)-based chemostratigraphic correlation scheme is proposed herein that works well for the Datangpo Formation regionally.Meanwhile,theδ^(13)C_(org) vertical gradients changed dynamically throughout the formation.This discovery implies that a significant ocean circulation overturn might have occurred in the upper Datangpo Formation,coinciding with the potential oxygenation.
基金supported by grants from the National Natural Science Foundation of China(81974371)the Emerging Frontier Program of Hospital Development Center(SHDC12018107)+6 种基金the General Surgery Construction Program of Shanghai Municipal Health Commission(2017ZZ02011)the Project of Excellent Young Scholars from Shanghai Municipal Health and Family Planning Commission(2018YQ10)the Talent Development Fund from Shanghai Municipal Human Resources and Social Security Bureau(2018048)the Experiment Animal Program of Shanghai Science and Technology Committee Innovative(19140902700)Research Team of High-level Local Universities in ShanghaiShanghai Key Laboratory of Biliary Tract Disease Research Foundation(17DZ2260200)the National Science and Technology Major Project(2019ZX09301-158)。
文摘Background:Inflammation is often related to cancer,and several inflammatory scores have been established to predict the prognosis of various types of cancer.Our study aimed to determine the prognostic value of the preoperative lymphocyte to C-reactive protein ratio(LCR)for predicting postoperative outcomes in patients with resectable gallbladder cancer(GBC).Methods:A retrospective analysis of 104 GBC patients who received curative surgery at Xinhua Hospital,Affiliated to Shanghai Jiao Tong University School of Medicine from January 2000 to December 2016 was performed.A time-dependent receiver operating characteristic curve was constructed to evaluate the accuracy of different markers.Univariate and multivariate Cox proportional hazard models were used to define factors associated with overall survival.Results:Among the assessed variables,the preoperative LCR showed the highest accuracy in predicting the overall survival of GBC patients(AUC:0.736).Decreased preoperative LCR was significantly associated with advanced tumor stage,including tumor invasion(P=0.018),lymph node metastasis(P=0.011)and TNM stage(P=0.022).A low preoperative LCR(cutoff threshold=145.5)was an independent risk factor for overall survival in patients with resectable GBC(P<0.001).Conclusions:The preoperative LCR is a novel and valuable prognostic indicator of postoperative survival in patients with resectable GBC.
