BACKGROUND Early quantitative assessment of liver fat content is essential for patients with fatty liver disease.Mounting evidence has shown that magnetic resonance(MR)technique has high accuracy in the quantitative a...BACKGROUND Early quantitative assessment of liver fat content is essential for patients with fatty liver disease.Mounting evidence has shown that magnetic resonance(MR)technique has high accuracy in the quantitative analysis of fatty liver,and is suitable for monitoring the therapeutic effect on fatty liver.However,many packaging methods and postprocessing functions have puzzled radiologists in clinical applications.Therefore,selecting a quantitative MR imaging technique for patients with fatty liver disease remains challenging.AIM To provide information for the proper selection of commonly used quantitative MR techniques to quantify fatty liver.METHODS We completed a systematic literature review of quantitative MR techniques for detecting fatty liver,following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses protocol.Studies were retrieved from PubMed,Embase,and Cochrane Library databases,and their quality was assessed using the Quality Assessment of Diagnostic Studies criteria.The Reference Citation Analysis database(https://www.referencecitationanalysis.com)was used to analyze citation of articles which were included in this review.RESULTS Forty studies were included for spectroscopy,two-point Dixon imaging,and multiple-point Dixon imaging comparing liver biopsy to other imaging methods.The advantages and disadvantages of each of the three techniques and their clinical diagnostic performances were analyzed.CONCLUSION The proton density fat fraction derived from multiple-point Dixon imaging is a noninvasive method for accurate quantitative measurement of hepatic fat content in the diagnosis and monitoring of fatty liver progression.展开更多
Background:Insomnia is a sleep disorder,which seriously affects people's physical and mental health.Our experimental study will further explain the efficacy and mechanism of the traditional Chinese medicine prescr...Background:Insomnia is a sleep disorder,which seriously affects people's physical and mental health.Our experimental study will further explain the efficacy and mechanism of the traditional Chinese medicine prescription Sanwei Anmian Decoction as well as the single drug treatment for insomnia,and provide scientific basis for TCM decoction to cure more insomnia patients.Methods:42 mices,half male and half female,were randomly divided into 7 groups,6 in each group,Blank group,Model group,Positive group,Sanwei Anmian Decoction group(abbreviated as Sanwei group),Suanzaoren group,Maidong group,Yuanzhi group.Intraperitoneal injection(ip)of PCPA 350 mg·kg^-1 in other groups except Blank group to establish a mice model of insomnia.On the next day after the successful modeling,10ml·kg^-1 corresponding decoction was given to Sanwei group,Suanzaoren group,Yuanzhi group and Maidong group respectively,0.8mg·kg^-1 estazolam for Positive group,Blank group and the Model group with the same amount of normal saline,three times a day for two days.The body weight and the number of autonomous activities of mice were observed.The sleep rate,sleep latency and sleep time were recorded after the last administration,and the contents of serum 5-hydroxytryptamine(5-HT)and dopamine(DA)were detected.Results:The changes of hair yellowing,alarm,food loss and weight loss in mice showed that the model was successful.After the last administration,compared with the Model group and the Blank group,the weight of mice in Sanwei Anmian Decoction and each disassembled prescription group increased,the autonomous activity decreased,the number of mice fell asleep increased,the concentration of 5-HT in serum increased and the concentration of DA decreased,P<0.01,which was statistically significant.Conclusions:Sanwei Anmian Decoction can effectively improve the symptoms of PCPA insomnia mice model.For single drug,Suanzaoren Decoction has the most obvious effect on the treatment of insomnia.展开更多
This phase 2/3 trial (NCT04856787) assessed the efficacy and safety of SHR-1701, a bifunctional protein targeting PD-L1 and TGF-β,in combination with BP102 (a bevacizumab biosimilar) and XELOX (capecitabine plus oxal...This phase 2/3 trial (NCT04856787) assessed the efficacy and safety of SHR-1701, a bifunctional protein targeting PD-L1 and TGF-β,in combination with BP102 (a bevacizumab biosimilar) and XELOX (capecitabine plus oxaliplatin) as a first-line treatment forunresectable metastatic colorectal cancer (mCRC). In this phase 2 study, a total of 62 patients with untreated, histologicallyconfirmed colorectal adenocarcinoma and no prior systemic therapy for metastatic disease were enrolled. Patients receivedSHR-1701 (30 mg/kg), bevacizumab (7.5 mg/kg), and oxaliplatin (130 mg/m^(2)) intravenously on day 1, along with oral capecitabine(1 g/m^(2) twice daily) on days 1-14 of 21-day cycles. Up to eight induction cycles were administered, followed by maintenancetherapy for responders or those with stable disease. The primary endpoints were safety and objective response rate (ORR) perRECIST v1.1. The combination achieved an ORR of 59.7% and a disease control rate (DCR) of 83.9%. Median progression-free survival(PFS) was 10.3 months (95% CI: 8.3-13.7), with 6- and 12-month PFS rates of 77.2% and 41.3%, respectively. The estimated12-month overall survival (OS) rate was 67.7%. Grade ≥3 treatment-related adverse events (TRAEs) were reported in 59.7% ofpatients, with anemia and neutropenia (8.1% each) being the most common. Retrospective DNA sequencing revealed that hightumor mutational burden, neo-antigens, and SBS15 enrichment correlated with better responses. Elevated baseline lactatedehydrogenase was linked to shorter PFS. SHR-1701 combined with XELOX and bevacizumab demonstrated a manageable safetyprofile and potent antitumor activity in unresectable mCRC.展开更多
Inherent brittleness and low heat resistance are the two major obstacles that hinder the wide applications of poly（L-lactide）（PLLA）. In this study,we report a fully biobased,highly toughened and heat-resistant PLL...Inherent brittleness and low heat resistance are the two major obstacles that hinder the wide applications of poly（L-lactide）（PLLA）. In this study,we report a fully biobased,highly toughened and heat-resistant PLLA ternary blend,which was prepared by dynamic vulcanization of PLLA with poly（D-lactide）（PDLA） and an unsaturated bioelastomer（UBE）. The results indicated that during dynamic vulcanization PDLA cocrystallized with PLLA to form stereocomplex（SC） crystallites,which not only enhanced the molecular entanglement but also accelerated the crystallization rate of PLLA matrix. With increase in the content of PDLA,the matrix molecular entanglement increased while phase-separation was enhanced,which enabled the impact strength to increase first and then decrease. The ternary blends containing 10 wt.% PDLA showed the highest impact strength. The presence of SC crystallites makes it possible to achieve a fully sustainable PLLA/VUB/PDLA ternary blend with highly crystalline matrix under conventional injection molding,due to the high nucleation efficiency of SC towards crystallization of PLLA. The highly crystalline ternary blend showed excellent heat resistance and better impact toughness than high impact polystyrene.展开更多
基金Supported by Beijing Municipal Science and Technology Commission,No.Z171100000417056Key Support Project of Guo Zhong Health Care of China General Technology Group,No.SGGK202201001。
文摘BACKGROUND Early quantitative assessment of liver fat content is essential for patients with fatty liver disease.Mounting evidence has shown that magnetic resonance(MR)technique has high accuracy in the quantitative analysis of fatty liver,and is suitable for monitoring the therapeutic effect on fatty liver.However,many packaging methods and postprocessing functions have puzzled radiologists in clinical applications.Therefore,selecting a quantitative MR imaging technique for patients with fatty liver disease remains challenging.AIM To provide information for the proper selection of commonly used quantitative MR techniques to quantify fatty liver.METHODS We completed a systematic literature review of quantitative MR techniques for detecting fatty liver,following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses protocol.Studies were retrieved from PubMed,Embase,and Cochrane Library databases,and their quality was assessed using the Quality Assessment of Diagnostic Studies criteria.The Reference Citation Analysis database(https://www.referencecitationanalysis.com)was used to analyze citation of articles which were included in this review.RESULTS Forty studies were included for spectroscopy,two-point Dixon imaging,and multiple-point Dixon imaging comparing liver biopsy to other imaging methods.The advantages and disadvantages of each of the three techniques and their clinical diagnostic performances were analyzed.CONCLUSION The proton density fat fraction derived from multiple-point Dixon imaging is a noninvasive method for accurate quantitative measurement of hepatic fat content in the diagnosis and monitoring of fatty liver progression.
基金This work was supported by the National College Students Innovation and Entrepreneurship Training Program(Grant No:201610471013).
文摘Background:Insomnia is a sleep disorder,which seriously affects people's physical and mental health.Our experimental study will further explain the efficacy and mechanism of the traditional Chinese medicine prescription Sanwei Anmian Decoction as well as the single drug treatment for insomnia,and provide scientific basis for TCM decoction to cure more insomnia patients.Methods:42 mices,half male and half female,were randomly divided into 7 groups,6 in each group,Blank group,Model group,Positive group,Sanwei Anmian Decoction group(abbreviated as Sanwei group),Suanzaoren group,Maidong group,Yuanzhi group.Intraperitoneal injection(ip)of PCPA 350 mg·kg^-1 in other groups except Blank group to establish a mice model of insomnia.On the next day after the successful modeling,10ml·kg^-1 corresponding decoction was given to Sanwei group,Suanzaoren group,Yuanzhi group and Maidong group respectively,0.8mg·kg^-1 estazolam for Positive group,Blank group and the Model group with the same amount of normal saline,three times a day for two days.The body weight and the number of autonomous activities of mice were observed.The sleep rate,sleep latency and sleep time were recorded after the last administration,and the contents of serum 5-hydroxytryptamine(5-HT)and dopamine(DA)were detected.Results:The changes of hair yellowing,alarm,food loss and weight loss in mice showed that the model was successful.After the last administration,compared with the Model group and the Blank group,the weight of mice in Sanwei Anmian Decoction and each disassembled prescription group increased,the autonomous activity decreased,the number of mice fell asleep increased,the concentration of 5-HT in serum increased and the concentration of DA decreased,P<0.01,which was statistically significant.Conclusions:Sanwei Anmian Decoction can effectively improve the symptoms of PCPA insomnia mice model.For single drug,Suanzaoren Decoction has the most obvious effect on the treatment of insomnia.
基金supported by Jiangsu Hengrui Pharmaceuticals and the following grants:the National Natural Science Foundation of China(NSFC:82321003,82173128,82073377,81930065)the Natural Science Foundation of Guangdong(2021A1515012439)+2 种基金Guangdong Basic and Applied Basic Research Foundation(2024B1515020120)the CAMS Innovation Fund for Medical Sciences(CIFMS:2019-I2M-5-036)Additional funding was provided by the Cancer Innovative Research Program of Sun Yat-sen University Cancer Center(CIRP-SYSUCC-0004).
文摘This phase 2/3 trial (NCT04856787) assessed the efficacy and safety of SHR-1701, a bifunctional protein targeting PD-L1 and TGF-β,in combination with BP102 (a bevacizumab biosimilar) and XELOX (capecitabine plus oxaliplatin) as a first-line treatment forunresectable metastatic colorectal cancer (mCRC). In this phase 2 study, a total of 62 patients with untreated, histologicallyconfirmed colorectal adenocarcinoma and no prior systemic therapy for metastatic disease were enrolled. Patients receivedSHR-1701 (30 mg/kg), bevacizumab (7.5 mg/kg), and oxaliplatin (130 mg/m^(2)) intravenously on day 1, along with oral capecitabine(1 g/m^(2) twice daily) on days 1-14 of 21-day cycles. Up to eight induction cycles were administered, followed by maintenancetherapy for responders or those with stable disease. The primary endpoints were safety and objective response rate (ORR) perRECIST v1.1. The combination achieved an ORR of 59.7% and a disease control rate (DCR) of 83.9%. Median progression-free survival(PFS) was 10.3 months (95% CI: 8.3-13.7), with 6- and 12-month PFS rates of 77.2% and 41.3%, respectively. The estimated12-month overall survival (OS) rate was 67.7%. Grade ≥3 treatment-related adverse events (TRAEs) were reported in 59.7% ofpatients, with anemia and neutropenia (8.1% each) being the most common. Retrospective DNA sequencing revealed that hightumor mutational burden, neo-antigens, and SBS15 enrichment correlated with better responses. Elevated baseline lactatedehydrogenase was linked to shorter PFS. SHR-1701 combined with XELOX and bevacizumab demonstrated a manageable safetyprofile and potent antitumor activity in unresectable mCRC.
基金supported by the National Science Foundation of China (51673158)the Opening Project of Key Laboratory of Polymer Processing Engineering (South China University of Technology),Ministry of Education (KFKT02)the Fundamental Research Funds for the Central Universities (XDJK2017A016 and XDJK2017C022)
文摘Inherent brittleness and low heat resistance are the two major obstacles that hinder the wide applications of poly（L-lactide）（PLLA）. In this study,we report a fully biobased,highly toughened and heat-resistant PLLA ternary blend,which was prepared by dynamic vulcanization of PLLA with poly（D-lactide）（PDLA） and an unsaturated bioelastomer（UBE）. The results indicated that during dynamic vulcanization PDLA cocrystallized with PLLA to form stereocomplex（SC） crystallites,which not only enhanced the molecular entanglement but also accelerated the crystallization rate of PLLA matrix. With increase in the content of PDLA,the matrix molecular entanglement increased while phase-separation was enhanced,which enabled the impact strength to increase first and then decrease. The ternary blends containing 10 wt.% PDLA showed the highest impact strength. The presence of SC crystallites makes it possible to achieve a fully sustainable PLLA/VUB/PDLA ternary blend with highly crystalline matrix under conventional injection molding,due to the high nucleation efficiency of SC towards crystallization of PLLA. The highly crystalline ternary blend showed excellent heat resistance and better impact toughness than high impact polystyrene.
