The complete convergence for weighted sums of sequences of independent,identically distributed random variables under sublinear expectation space is studied.By moment inequality and truncation methods,we establish the...The complete convergence for weighted sums of sequences of independent,identically distributed random variables under sublinear expectation space is studied.By moment inequality and truncation methods,we establish the equivalent conditions of complete convergence for weighted sums of sequences of independent,identically distributed random variables under sublinear expectation space.The results complement the corresponding results in probability space to those for sequences of independent,identically distributed random variables under sublinear expectation space.展开更多
The emergence of SARS-CoV-2 variants and drug-resistant mutants emphasizes the urgent need to develop novel antiviral agents.In the present study,we examined the therapeutic effect of the Chinese medicinal herb,Scutel...The emergence of SARS-CoV-2 variants and drug-resistant mutants emphasizes the urgent need to develop novel antiviral agents.In the present study,we examined the therapeutic effect of the Chinese medicinal herb,Scutellaria barbata D.Don(SBD),against SARS-CoV-2 infection both in vitro and in vivo.Using a viral replicon particle(VRP)-based mouse model of SARS-CoV-2 infection,our study revealed that SBD extracts can reduce viral load in mouse lungs and alleviate the viral induced pneumonia.In vitro antiviral determination further validated the direct acting antiviral efficacy of SBD extracts against SARS-CoV-2 replication.Mechanistic studies demonstrated that SBD can act against SARS-CoV2 replication by targeting both 3-chymotrypsin-like and papain-like cysteine proteases,via a combination of multiple active constituents.Moreover,SBD can modulate the host inflammation response in a bi-directional manner,which also contribute to the mitigation of viral induced acute lung injury.In summary,our study provides SBD as a promising therapeutic agent to combat SARS-CoV-2 infections that merit further development.展开更多
Objective:Despite the combination of Scutellaria barbata D.Don and Scleromitrion diffusum(Willd.)R.J.Wang(SB-SD)being a recognized Chinese medicinal herbal pair that is commonly used in the treatment of ovarian cancer...Objective:Despite the combination of Scutellaria barbata D.Don and Scleromitrion diffusum(Willd.)R.J.Wang(SB-SD)being a recognized Chinese medicinal herbal pair that is commonly used in the treatment of ovarian cancer,there is a poor understanding of their pharmacological mechanisms.This study examines the antitumor properties and potential mechanisms of SB-SD on human ovarian cancer A2780 cells through a multi-omics approach,establishing a pharmacological basis for clinical utilization.Methods:A range of mass ratios and reagents were used in the hot reflux extraction of SB-SD.The inhibitory effect of the SB-SD extracts on A2780 cell proliferation was assessed using the cell-counting kit 8assay.A zebrafish tumor implantation model was used to evaluate the effects of SB-SD extracts on tumor growth and metastasis in vivo.Transcriptomics and proteomics were used to investigate alterations in biological pathways in A2780 cells after treatment with different concentrations of SB-SD extract.Cell cycle,cell apoptosis,intracellular free iron concentration,intracellular reactive oxygen species(ROS)concentration,malondialdehyde(MDA),and mitochondrial membrane potential were measured.Real-time quantitative reverse transcription polymerase chain reaction and Western blotting were utilized to investigate the effects of heme catabolism and ferritinophagy on ferroptosis induced by SB-SD extract in A2780 cells.Results:The 70%ethanol extract of SB-SD(a mass ratio of 4:1)inhibited A2780 cell proliferation significantly with a half maximal inhibitory concentration of 660μg/m L in a concentration-and timedependent manner.Moreover,it effectively suppressed tumor growth and metastasis in a zebrafish tumor implantation model.SB-SD extract induced the accumulation of free iron,ROS,MDA,and mitochondrial damage in A2780 cells.The mechanisms might involve the upregulated expression of ferritinophagyrelated genes microtubule-associated protein 1 light chain 3,autophagy-related gene 5,and nuclear receptor coactivator 4.Conclusion:SB-SD extract effectively inhibited the development of ovarian cancer both in vitro and in vivo.Its mechanism of action involved inducing ferroptosis by facilitating heme catabolism and ferritinophagy.This herbal pair holds promise as a potential therapeutic option for ovarian cancer treatment and may be utilized in combination with routine treatment to improve the treatment outcomes of ovarian cancer patients.展开更多
[Objective] The aim was to study the effect of different treatments on development and growth of Halenia ellipitica D.Don.[Method] Three treatments (urea treatment group, diammonium phosphate treatment group and contr...[Objective] The aim was to study the effect of different treatments on development and growth of Halenia ellipitica D.Don.[Method] Three treatments (urea treatment group, diammonium phosphate treatment group and control group) were set in the experiment with 3 replications to detect plant height,root length, leaf number, branch number, flower number and biomass of Halenia ellipitica D.Don. in all experimental groups.[Result] The leaf number,branch number, flower number and output of crude drug of Halenia ellipitica D.Don. in urea treatment group were more than that of Halenia ellipitica D.Don. in diammonium phosphate treatment group and control group,however,the plant height and root length were not significantly different among all groups.[Conclusion] The urea generated better effect on Halenia ellipitica D.Don. cultivation than that produced by diammonium phosphate treatment.展开更多
"伟大的人民教育家"陶行知留学美国哥伦比亚大学期间,无论在专业课程选修抑或毕业论文指导上,该校施吹耳(G. D. Strayer)教授都扮演着十分重要的角色。就其归国后教育理论的形成和教育事业的建树而言,尤其在教育行政观、学校..."伟大的人民教育家"陶行知留学美国哥伦比亚大学期间,无论在专业课程选修抑或毕业论文指导上,该校施吹耳(G. D. Strayer)教授都扮演着十分重要的角色。就其归国后教育理论的形成和教育事业的建树而言,尤其在教育行政观、学校调查法和公共教育思想等方面,可以清晰地看出他对乃师施氏教育思想及理念的认同与承传。即是说,施氏所授对陶行知的教育思想和实践产生的影响颇为显现。展开更多
基金supported by Doctoral Scientific Research Starting Foundation of Jingdezhen Ceramic University(Grant No.102/01003002031)Re-accompanying Funding Project of Academic Achievements of Jingdezhen Ceramic University(Grant Nos.215/20506277,215/20506341)。
文摘The complete convergence for weighted sums of sequences of independent,identically distributed random variables under sublinear expectation space is studied.By moment inequality and truncation methods,we establish the equivalent conditions of complete convergence for weighted sums of sequences of independent,identically distributed random variables under sublinear expectation space.The results complement the corresponding results in probability space to those for sequences of independent,identically distributed random variables under sublinear expectation space.
基金supported by the National Natural Science Foundation of China(82274204 and 82104134)the Natural Science Foundation of Shandong Province,China(ZR2024QH110)+1 种基金the Major Basic Program of Shandong Natural Science Foundation,China(ZR2021ZD17)the Project of Youth Innovation Team of Shandong Province(2022KJ254).
文摘The emergence of SARS-CoV-2 variants and drug-resistant mutants emphasizes the urgent need to develop novel antiviral agents.In the present study,we examined the therapeutic effect of the Chinese medicinal herb,Scutellaria barbata D.Don(SBD),against SARS-CoV-2 infection both in vitro and in vivo.Using a viral replicon particle(VRP)-based mouse model of SARS-CoV-2 infection,our study revealed that SBD extracts can reduce viral load in mouse lungs and alleviate the viral induced pneumonia.In vitro antiviral determination further validated the direct acting antiviral efficacy of SBD extracts against SARS-CoV-2 replication.Mechanistic studies demonstrated that SBD can act against SARS-CoV2 replication by targeting both 3-chymotrypsin-like and papain-like cysteine proteases,via a combination of multiple active constituents.Moreover,SBD can modulate the host inflammation response in a bi-directional manner,which also contribute to the mitigation of viral induced acute lung injury.In summary,our study provides SBD as a promising therapeutic agent to combat SARS-CoV-2 infections that merit further development.
基金supported by the National Natural Science Foundation of China(No.81873195)the Applied Basic Research Program of Liaoning Province(No.2023JH2/101300103)+1 种基金the Liaoning Revitalization Talents Program(No.XLYC1907113)the Dalian Medical University Foundation for Teaching Reform Project of Undergraduate Innovative Talents Training(No.111807010303)。
文摘Objective:Despite the combination of Scutellaria barbata D.Don and Scleromitrion diffusum(Willd.)R.J.Wang(SB-SD)being a recognized Chinese medicinal herbal pair that is commonly used in the treatment of ovarian cancer,there is a poor understanding of their pharmacological mechanisms.This study examines the antitumor properties and potential mechanisms of SB-SD on human ovarian cancer A2780 cells through a multi-omics approach,establishing a pharmacological basis for clinical utilization.Methods:A range of mass ratios and reagents were used in the hot reflux extraction of SB-SD.The inhibitory effect of the SB-SD extracts on A2780 cell proliferation was assessed using the cell-counting kit 8assay.A zebrafish tumor implantation model was used to evaluate the effects of SB-SD extracts on tumor growth and metastasis in vivo.Transcriptomics and proteomics were used to investigate alterations in biological pathways in A2780 cells after treatment with different concentrations of SB-SD extract.Cell cycle,cell apoptosis,intracellular free iron concentration,intracellular reactive oxygen species(ROS)concentration,malondialdehyde(MDA),and mitochondrial membrane potential were measured.Real-time quantitative reverse transcription polymerase chain reaction and Western blotting were utilized to investigate the effects of heme catabolism and ferritinophagy on ferroptosis induced by SB-SD extract in A2780 cells.Results:The 70%ethanol extract of SB-SD(a mass ratio of 4:1)inhibited A2780 cell proliferation significantly with a half maximal inhibitory concentration of 660μg/m L in a concentration-and timedependent manner.Moreover,it effectively suppressed tumor growth and metastasis in a zebrafish tumor implantation model.SB-SD extract induced the accumulation of free iron,ROS,MDA,and mitochondrial damage in A2780 cells.The mechanisms might involve the upregulated expression of ferritinophagyrelated genes microtubule-associated protein 1 light chain 3,autophagy-related gene 5,and nuclear receptor coactivator 4.Conclusion:SB-SD extract effectively inhibited the development of ovarian cancer both in vitro and in vivo.Its mechanism of action involved inducing ferroptosis by facilitating heme catabolism and ferritinophagy.This herbal pair holds promise as a potential therapeutic option for ovarian cancer treatment and may be utilized in combination with routine treatment to improve the treatment outcomes of ovarian cancer patients.
文摘[Objective] The aim was to study the effect of different treatments on development and growth of Halenia ellipitica D.Don.[Method] Three treatments (urea treatment group, diammonium phosphate treatment group and control group) were set in the experiment with 3 replications to detect plant height,root length, leaf number, branch number, flower number and biomass of Halenia ellipitica D.Don. in all experimental groups.[Result] The leaf number,branch number, flower number and output of crude drug of Halenia ellipitica D.Don. in urea treatment group were more than that of Halenia ellipitica D.Don. in diammonium phosphate treatment group and control group,however,the plant height and root length were not significantly different among all groups.[Conclusion] The urea generated better effect on Halenia ellipitica D.Don. cultivation than that produced by diammonium phosphate treatment.
文摘"伟大的人民教育家"陶行知留学美国哥伦比亚大学期间,无论在专业课程选修抑或毕业论文指导上,该校施吹耳(G. D. Strayer)教授都扮演着十分重要的角色。就其归国后教育理论的形成和教育事业的建树而言,尤其在教育行政观、学校调查法和公共教育思想等方面,可以清晰地看出他对乃师施氏教育思想及理念的认同与承传。即是说,施氏所授对陶行知的教育思想和实践产生的影响颇为显现。
