BACKGROUND The diagnosis of primary biliary cholangitis(PBC)remains challenging,particularly in cases where anti-mitochondrial antibody(AMA),anti-mitochondrial E2 subunit antibody(AMA-M2),anti-glycoprotein 210(anti-gp...BACKGROUND The diagnosis of primary biliary cholangitis(PBC)remains challenging,particularly in cases where anti-mitochondrial antibody(AMA),anti-mitochondrial E2 subunit antibody(AMA-M2),anti-glycoprotein 210(anti-gp210),and anti-speckled protein 100(anti-Sp100)are all negative.In such instances,the condition is often confirmed through a liver needle biopsy.AIM To identify additional plasma biomarkers for non-invasive diagnostic methods of PBC.METHODS We utilized the Sengenics KREX^(TM)immunome protein array to identify potential biomarkers for the diagnosis of PBC.Subsequently,we validated the predictive capability of the RPL30 antibody through an ELISA and retrospectively analyzed its association with the clinical features of 17 autoantibody-negative PBC cases and 45 autoantibody-positive PBC cases.RESULTS In our study we observed that RPL30 demonstrated the highest fold-change difference in PBC,with a penetrance frequency of 40%and a penetrance fold change of 38.30147.The analysis of anti-RPL30 optical density values between patients with AMA/AMA-M2/anti-gp210/anti-Sp100-negative PBC(autoantibody-negative PBC)and healthy controls using a receiver operating characteristic curve yielded an area under the curve of 0.853.This analysis established an optimal cutoff value of 0.0708,achieving 100%specificity and 75%sensitivity.The combination of anti-RPL30 and other autoantibodies elevated the diagnosis rate of PBC from 61.29%to 79.00%(P=0.0489).Anti-RPL30 demonstrated a high positive rate in antibody-negative PBC cases,including AMA/AMAM2/anti-gp210/anti-Sp100-negative cases.Correlation analysis of anti-RPL30 optical density values with clinical data from patients with PBC revealed a positive association with both the international normalized ratio(P=0.008)and the Model for End-Stage Liver Disease score(P=0.003).CONCLUSION Our study highlighted the potential of anti-RPL30 as a promising biomarker for diagnosing PBC,particularly in autoantibody-negative cases.展开更多
Objective:Varied acupoint selections represent a potential cause of the uncertainty surrounding the efficacy of acupuncture for knee osteoarthritis(OA).Skin temperature,a guiding factor for acupoint selection,may help...Objective:Varied acupoint selections represent a potential cause of the uncertainty surrounding the efficacy of acupuncture for knee osteoarthritis(OA).Skin temperature,a guiding factor for acupoint selection,may help to address this issue.This study explored thermal sensitization of acupoints used for the treatment of knee OA.Methods:This cross-sectional case-control study enrolled cases aged 45–75 years with symptomatic knee OA and age-and gender-matched non-knee OA controls in a 1:1 ratio.All participants underwent infrared thermographic imaging.The primary outcome was the relative skin temperature of acupoint(STA),and the secondary outcome was the absolute STA of 11 acupoints.The Z test was used to compare the relative and absolute STAs between the groups.Principal component analysis was used to extract the common factors(CFs,acupoint cluster)in the STAs.A general linear model was used to identify factors affecting the STA in the knee OA cases.For the group comparisons of relative STA,P<0.0045(adjusted for 11 acupoints through Bonferroni correction)was considered to indicate statistical significance.For other analyses,P<0.05 was used as the threshold for statistical significance.Results:The analysis included 308 participants,consisting of 151 cases(mean age:[64.58±6.67]years;male:25.83%;mean body mass index:[25.70±3.16]kg/m~2)and 157 controls(mean age:[63.37±5.96]years;male:26.11%;mean body mass index:[24.47±2.84]kg/m~2).The relative STAs of ST34(P=0.0001),EX-LE2(P<0.0001),EX-LE5(P=0.0006),SP10(P<0.0001),BL40(P=0.0012)and GB39(P=0.0037)were higher in the knee OA group.No difference was found in the STAs of ST35,ST36,SP9,GB33 and GB34.Four CFs were identified for relative STA in both groups.The acupoints within each CF were consistent between the groups.The mean values of the relative STAs across each CF were higher in the knee OA group.In the knee OA cases,no factors were observed to affect the relative STA,while age and gender were found to affect the absolute STA.Conclusion:Among patients with knee OA,thermal sensitization occurs in the acupoints of the lower extremity,exhibiting localized and regional thermal consistencies.The thermally sensitized acupoints that we identified in this study,ST34,SP10,EX-LE2,EX-LE5,GB39 and BL40,may be good choices for the acupuncture treatment of knee OA.展开更多
Superhydrophilic surfaces have been applied for supercapacitor;however,during energy storage reaction,how the wettability affects the process of electrochemical reaction specifically is still unclear.Herein,we demonst...Superhydrophilic surfaces have been applied for supercapacitor;however,during energy storage reaction,how the wettability affects the process of electrochemical reaction specifically is still unclear.Herein,we demonstrate superhydrophilic surface for promotion of electrochemical reactions by liquid affinity and further explain the mechanism,where the transition of the wettability state caused by the change in surface free energy is the main reason for the obvious increase in specific capacitance.Through citric acid assistance strategy,an intrinsically hydrophobic Ni(OH)_(2)thick nanosheets(HNHTNs,16 nm)can be transitioned into superhydrophilic Ni(OH)_(2)ultrathin nanosheets(SNHUNs,6.8 nm),where the water contact angle was 0°and the surface free energy increased from 8.6to 65.8 mN·m^(-1),implying superhydrophilicity.Compared with HNHTNs,the specific capacitance of SNHUNs is doubled:from 1230 F·g^(-1)(HNHTNs)to 2350 F·g^(-1)(2A·g^(-1))and,even at 20 A·g^(-1),from 833 F·g^(-1)(HNHTNs)to 1670 F·g^(-1).The asymmetric capacitors assembled by SNHUNs and activated carbon show 52.44 Wh·kg^(-1)at 160W·kg^(-1)and excellent stability with~90%retention after5000 cycles(~80%retention after 9500 cycles).The promotion of electrochemical performances is ascribed to the change of surface wettability caused by surface free energy,which greatly increase affinity of electrode to the surrounding liquid environment to reduce the interface resistance and optimize the electron transport path.展开更多
Recent evidence suggests that low-intensity extracorporeal shock wave therapy(Li-ESWT)is a promising treatment for chronic prostatitis/chronic pelvic pain syndrome(CP/CPPS);however,its safety in pelvic organs,particul...Recent evidence suggests that low-intensity extracorporeal shock wave therapy(Li-ESWT)is a promising treatment for chronic prostatitis/chronic pelvic pain syndrome(CP/CPPS);however,its safety in pelvic organs,particularly prostate tissues and cells,remains unclear.The current study evaluates the risks of prostate cell damage or oncogenesis following the administration of LiESWT for prostatitis.To this end,a robust in vitro model(Cell Counting Kit-8[CCK-8]assay,clone formation assay,cell scratch assay,lactate dehydrogenase[LDH]release assay,flow cytometry,and immunoblotting assay)was designed to examine the effects of Li-ESWT on cell proliferation,clonogenicity,migration,membrane integrity,and DNA damage.Exome sequencing of Li-ESWTtreated cells was performed to determine the risk of carcinogenesis.Furthermore,an in vivo rat model(n=20)was employed to assess the effects of Li-ESWT on cancer biomarkers(carcinoembryonic antigen[CEA],Ki67,proliferating cell nuclear antigen[PCNA],and gamma-H2A histone family member X,phosphorylation of the H2AX Ser-139[γ-H2AX])in prostate tissue.Based on our findings,Li-ESWT promotes cellular growth and motility without inducing significant cell membrane or DNA damage or alterations.Genetic analyses did not demonstrate an increase in mutations,and no damage to prostate tissue or upregulation of cancer biomarkers was detected in vivo.This comprehensive in vitro and in vivo assessment confirms the safety of Li-ESWT in managing prostate disorders.展开更多
Thin film thermocouples（TFTCs） can provide fast and accurate surface temperature measurement with minimal impact on the physical characteristics of the supporting components. In this study, NiCr and NiSi films were ...Thin film thermocouples（TFTCs） can provide fast and accurate surface temperature measurement with minimal impact on the physical characteristics of the supporting components. In this study, NiCr and NiSi films were prepared with radio frequency（RF） magnetron sputtering and the influences of vacuum annealing on the resistivity of the films were investigated. Afterward, NiCr-NiSi films were deposited on Ni-based superalloy substrates to form TFTCs. The overall dimension of the thermocouple is 64 mm in length, 8 mm in width and 30 lm in thickness. Compared with those of as-deposited sample, the thermoelectric property and stability of the TFTC are significantly improved by vacuum annealing of NiCr and NiSi films. The variation of the Seebeck coefficient of TFTC was discussed based on the size effect of NiCr and NiSi films. And a lower Seebeck coefficient of TFTC of 38.4 μV·℃^-1 is obtained.展开更多
Major royal jelly protein 1（MRJP1）, designated apalbumin 1, has been regarded as a freshness marker of royal jelly（RJ）. A MRJP1-specific peptide（IKEALPHVPIFD） identified by bioinformatics analysis of homologous ...Major royal jelly protein 1（MRJP1）, designated apalbumin 1, has been regarded as a freshness marker of royal jelly（RJ）. A MRJP1-specific peptide（IKEALPHVPIFD） identified by bioinformatics analysis of homologous members of the major royal protein family was synthesized and used to raise polyclonal anti-MRJP1 antibody（antiSP-MRJP1 antibody）. Western blot analysis showed that anti-SP-MRJP1 antibody only reacted with MRJP1 in RJ. In contrast, the previously reported antibody against recombinant MRJP1（anti-R-MRJP1 antibody） reacted with other members of MRJP family in RJ. Enzyme-linked immunosorbent assay（ELISA） using anti-SP-MRJP1 antibody demonstrated that MRJP1 content in RJ stored at 40 °C significantly degraded by 37.3%, 55.9%, 58.0%, 60.6%, 65.7%, 72.7%, and 73.1% at 7, 14, 21, 28, 35, 42, and 49 d, respectively, when compared with MRJP1 content in fresh RJ（0 d）. Optical density analysis of MRJP bands from sodium dodecyl sulfate-polyacrylamide gel electrophoresis（SDS-PAGE） profiles demonstrated that the degradation of MRJP1, MRJP2, MRJP3, and MRJP5 in RJ was strongly and positively correlated with the period of storage（P〈0.0001）. Our results indicated anti-SP-MRJP1 antibody was highly specific for MRJP1, and ELISA using the antibody is a sensitive and easy-to-use method to determine the freshness and authenticity of RJ.展开更多
The complete mitochondrial genome of Acanthacorydalis orientalis （McLachlan） was determined and analyzed （GenBank accession number： KF840564）. This paper represents the first mitochondrial （mt） genome of the do...The complete mitochondrial genome of Acanthacorydalis orientalis （McLachlan） was determined and analyzed （GenBank accession number： KF840564）. This paper represents the first mitochondrial （mt） genome of the dobsonfly genus Acanthacorydalis. The mt genome is a typical circular DNA of 15 753 bp composed of 37 genes with an A＋T content of 76.7%. It has an ancestral gene arrangement of the insect mt genomes. Eleven of the 13 PCGs start with codon ATT and ATG,while several exceptions such as ATA and TTG respectively for atp 8 and nad 1 are also present. Five protein-coding genes end with a single T, while others have a termination codon of TAA or TAG. Most tRNAs are folded into the typical clover-leaf structure except for the trnS 1 whose dihydrouridine arm was a simple loop. The secondary structure of rrnl consists of five structural domains and 50 helices, while the rrns includes three domains and 34 helices. The control region has a stretches of Ts with a length of 22 bp but lacks obvious tandem repeat region. Both Bayesian inference and maximum likelihood （ML） analyses, based on all 13 protein-coding genes and two rRNA genes of the mt genomes, confirm the monophyly of Corydalinae and suggest that Acanthacorydalis, together with Corydalus, which is an endemic dobsonfly genus from the New World, belong to a monophyletic lineage.展开更多
Chronic inflammation,through a variety of mechanisms,plays a key role in the occurrence and development of digestive system malignant tumors(DSMTs).In this study,we feature and provide a comprehensive understanding of...Chronic inflammation,through a variety of mechanisms,plays a key role in the occurrence and development of digestive system malignant tumors(DSMTs).In this study,we feature and provide a comprehensive understanding of DSMT prevention strategies based on preventing or controlling chronic inflammation.The development and evaluation of cancer prevention strategies is a longstanding process.Cancer prevention,especially in the early stage of life,should be emphasized throughout the whole life course.Issues such as the time interval for colon cancer screening,the development of direct-acting antiviral drugs for liver cancer,and the Helicobacter pylori vaccine all need to be explored in long-term,large-scale experiments in the future.展开更多
By using first-principles calculation,we study the properties of h-BN/BC_(3)heterostructure and the effects of external electric fields and strains on its electronic and optical properties.It is found that the semicon...By using first-principles calculation,we study the properties of h-BN/BC_(3)heterostructure and the effects of external electric fields and strains on its electronic and optical properties.It is found that the semiconducting h-BN/BC_(3)has good dynamical stability and ultrahigh stiffness,enhanced electron mobility,and well-preserved electronic band structure as the BC_(3)monolayer.Meanwhile,its electronic band structure is slightly modified by an external electric field.In contrast,applying an external strain can mildly modulate the electronic band structure of h-BN/BC_(3)and the optical property exhibits an apparent redshift under a compressive strain relative to the pristine one.These findings show that the h-BN/BC_(3)hybrid can be designed as optoelectronic device with moderately strain-tunable electronic and optical properties.展开更多
Objective:The mechanism of Yupingfeng Powder in the treatment of non-small cell lung cancer was analyzed by network pharmacology and molecular docking method.Methods:Search the related literature and TCMSP database,qu...Objective:The mechanism of Yupingfeng Powder in the treatment of non-small cell lung cancer was analyzed by network pharmacology and molecular docking method.Methods:Search the related literature and TCMSP database,query the chemical composition and action target of Yupingfeng powder,query the disease database of Genecards,OMIM,DisGeNET,Drugbank,etc.,use"non-small cell lung cancer"as the keyword to search the disease-related target,select the intersection target with Yupingfeng powder as the research target,and use Cytoscape 3.7.2 software to construct the active component-target network map.The protein-protein interaction network map was constructed by using STRING database,and the treatment core targets were further screened by topological parameters,and GO analysis and KEGG signal pathway enrichment analysis were carried out.Finally,molecular docking was verified.Results:37 active components of Yupingfeng Powder were screened,including 146 common targets and 44 core targets.GO analysis and KEGG analysis show that the core target participates in many biological processes such as angiogenesis and cell proliferation,and acts on a variety of signal pathways such as AGE-RAGE,IL-17,TNF,MAPK and so on.Molecular docking shows that the core compound has good docking activity with the target.Conclusion:Network pharmacological analysis shows that Yupingfeng powder in the treatment of non-small cell lung cancer involves multi-target and multi-pathway mechanism,and the drug and target have good docking activity,which can provide theoretical basis for follow-up experimental research.展开更多
基金Supported by National Natural Science Foundation of China,No.82172257Health Care Major Project of Guangzhou,No.202206080001Science and Technology Cooperation Program of Fujian Province,No.2021I0036。
文摘BACKGROUND The diagnosis of primary biliary cholangitis(PBC)remains challenging,particularly in cases where anti-mitochondrial antibody(AMA),anti-mitochondrial E2 subunit antibody(AMA-M2),anti-glycoprotein 210(anti-gp210),and anti-speckled protein 100(anti-Sp100)are all negative.In such instances,the condition is often confirmed through a liver needle biopsy.AIM To identify additional plasma biomarkers for non-invasive diagnostic methods of PBC.METHODS We utilized the Sengenics KREX^(TM)immunome protein array to identify potential biomarkers for the diagnosis of PBC.Subsequently,we validated the predictive capability of the RPL30 antibody through an ELISA and retrospectively analyzed its association with the clinical features of 17 autoantibody-negative PBC cases and 45 autoantibody-positive PBC cases.RESULTS In our study we observed that RPL30 demonstrated the highest fold-change difference in PBC,with a penetrance frequency of 40%and a penetrance fold change of 38.30147.The analysis of anti-RPL30 optical density values between patients with AMA/AMA-M2/anti-gp210/anti-Sp100-negative PBC(autoantibody-negative PBC)and healthy controls using a receiver operating characteristic curve yielded an area under the curve of 0.853.This analysis established an optimal cutoff value of 0.0708,achieving 100%specificity and 75%sensitivity.The combination of anti-RPL30 and other autoantibodies elevated the diagnosis rate of PBC from 61.29%to 79.00%(P=0.0489).Anti-RPL30 demonstrated a high positive rate in antibody-negative PBC cases,including AMA/AMAM2/anti-gp210/anti-Sp100-negative cases.Correlation analysis of anti-RPL30 optical density values with clinical data from patients with PBC revealed a positive association with both the international normalized ratio(P=0.008)and the Model for End-Stage Liver Disease score(P=0.003).CONCLUSION Our study highlighted the potential of anti-RPL30 as a promising biomarker for diagnosing PBC,particularly in autoantibody-negative cases.
基金funded by the National Natural Science Foundation of China(No.82104693 and 81825024)。
文摘Objective:Varied acupoint selections represent a potential cause of the uncertainty surrounding the efficacy of acupuncture for knee osteoarthritis(OA).Skin temperature,a guiding factor for acupoint selection,may help to address this issue.This study explored thermal sensitization of acupoints used for the treatment of knee OA.Methods:This cross-sectional case-control study enrolled cases aged 45–75 years with symptomatic knee OA and age-and gender-matched non-knee OA controls in a 1:1 ratio.All participants underwent infrared thermographic imaging.The primary outcome was the relative skin temperature of acupoint(STA),and the secondary outcome was the absolute STA of 11 acupoints.The Z test was used to compare the relative and absolute STAs between the groups.Principal component analysis was used to extract the common factors(CFs,acupoint cluster)in the STAs.A general linear model was used to identify factors affecting the STA in the knee OA cases.For the group comparisons of relative STA,P<0.0045(adjusted for 11 acupoints through Bonferroni correction)was considered to indicate statistical significance.For other analyses,P<0.05 was used as the threshold for statistical significance.Results:The analysis included 308 participants,consisting of 151 cases(mean age:[64.58±6.67]years;male:25.83%;mean body mass index:[25.70±3.16]kg/m~2)and 157 controls(mean age:[63.37±5.96]years;male:26.11%;mean body mass index:[24.47±2.84]kg/m~2).The relative STAs of ST34(P=0.0001),EX-LE2(P<0.0001),EX-LE5(P=0.0006),SP10(P<0.0001),BL40(P=0.0012)and GB39(P=0.0037)were higher in the knee OA group.No difference was found in the STAs of ST35,ST36,SP9,GB33 and GB34.Four CFs were identified for relative STA in both groups.The acupoints within each CF were consistent between the groups.The mean values of the relative STAs across each CF were higher in the knee OA group.In the knee OA cases,no factors were observed to affect the relative STA,while age and gender were found to affect the absolute STA.Conclusion:Among patients with knee OA,thermal sensitization occurs in the acupoints of the lower extremity,exhibiting localized and regional thermal consistencies.The thermally sensitized acupoints that we identified in this study,ST34,SP10,EX-LE2,EX-LE5,GB39 and BL40,may be good choices for the acupuncture treatment of knee OA.
基金financially supported by the National Natural Science Foundation of China(Nos.22278349 and 62071413)Hebei Natural Science Foundation(Nos.B2020203013 and F2020203056)+4 种基金the Science and Technology Project of Hebei Education Department(No.QN2020137)Subsidy for Hebei Key Laboratory of Applied Chemistry after Operation Performance(No.22567616H)the Cultivation Project for Basic Research Innovation of Yanshan University(No.2021LGZD015)the Natural Science Foundation of Heilongjiang Province of China(No.LH2022B025)the Fundamental Research Funds for the Provincial Universities of Heilongjiang Province(No.KYYWF10236190104)。
文摘Superhydrophilic surfaces have been applied for supercapacitor;however,during energy storage reaction,how the wettability affects the process of electrochemical reaction specifically is still unclear.Herein,we demonstrate superhydrophilic surface for promotion of electrochemical reactions by liquid affinity and further explain the mechanism,where the transition of the wettability state caused by the change in surface free energy is the main reason for the obvious increase in specific capacitance.Through citric acid assistance strategy,an intrinsically hydrophobic Ni(OH)_(2)thick nanosheets(HNHTNs,16 nm)can be transitioned into superhydrophilic Ni(OH)_(2)ultrathin nanosheets(SNHUNs,6.8 nm),where the water contact angle was 0°and the surface free energy increased from 8.6to 65.8 mN·m^(-1),implying superhydrophilicity.Compared with HNHTNs,the specific capacitance of SNHUNs is doubled:from 1230 F·g^(-1)(HNHTNs)to 2350 F·g^(-1)(2A·g^(-1))and,even at 20 A·g^(-1),from 833 F·g^(-1)(HNHTNs)to 1670 F·g^(-1).The asymmetric capacitors assembled by SNHUNs and activated carbon show 52.44 Wh·kg^(-1)at 160W·kg^(-1)and excellent stability with~90%retention after5000 cycles(~80%retention after 9500 cycles).The promotion of electrochemical performances is ascribed to the change of surface wettability caused by surface free energy,which greatly increase affinity of electrode to the surrounding liquid environment to reduce the interface resistance and optimize the electron transport path.
基金supported by grants from the National Natural Science Foundation of China(No.PR0121015)the National Natural Science Foundation of China(No.82160148)the Natural Science Foundation Project of Gansu Province(No.2106RJZA110).
文摘Recent evidence suggests that low-intensity extracorporeal shock wave therapy(Li-ESWT)is a promising treatment for chronic prostatitis/chronic pelvic pain syndrome(CP/CPPS);however,its safety in pelvic organs,particularly prostate tissues and cells,remains unclear.The current study evaluates the risks of prostate cell damage or oncogenesis following the administration of LiESWT for prostatitis.To this end,a robust in vitro model(Cell Counting Kit-8[CCK-8]assay,clone formation assay,cell scratch assay,lactate dehydrogenase[LDH]release assay,flow cytometry,and immunoblotting assay)was designed to examine the effects of Li-ESWT on cell proliferation,clonogenicity,migration,membrane integrity,and DNA damage.Exome sequencing of Li-ESWTtreated cells was performed to determine the risk of carcinogenesis.Furthermore,an in vivo rat model(n=20)was employed to assess the effects of Li-ESWT on cancer biomarkers(carcinoembryonic antigen[CEA],Ki67,proliferating cell nuclear antigen[PCNA],and gamma-H2A histone family member X,phosphorylation of the H2AX Ser-139[γ-H2AX])in prostate tissue.Based on our findings,Li-ESWT promotes cellular growth and motility without inducing significant cell membrane or DNA damage or alterations.Genetic analyses did not demonstrate an increase in mutations,and no damage to prostate tissue or upregulation of cancer biomarkers was detected in vivo.This comprehensive in vitro and in vivo assessment confirms the safety of Li-ESWT in managing prostate disorders.
基金financially supported by the National Natural Science Foundation of China (No.61223002)Sichuan Youth Science and Technology Innovation Research Team Funding (No.2011JTD0006)Program for Cooperation of Industry, Education and Academy of Guangdong Province, China (No.2013B090400001)
文摘Thin film thermocouples（TFTCs） can provide fast and accurate surface temperature measurement with minimal impact on the physical characteristics of the supporting components. In this study, NiCr and NiSi films were prepared with radio frequency（RF） magnetron sputtering and the influences of vacuum annealing on the resistivity of the films were investigated. Afterward, NiCr-NiSi films were deposited on Ni-based superalloy substrates to form TFTCs. The overall dimension of the thermocouple is 64 mm in length, 8 mm in width and 30 lm in thickness. Compared with those of as-deposited sample, the thermoelectric property and stability of the TFTC are significantly improved by vacuum annealing of NiCr and NiSi films. The variation of the Seebeck coefficient of TFTC was discussed based on the size effect of NiCr and NiSi films. And a lower Seebeck coefficient of TFTC of 38.4 μV·℃^-1 is obtained.
基金supported by the Public Beneficial Scientific&Technical Plan of Zhejiang(No.2011C22039)the Important Scientific & Technical Plan of Zhejiang(No.2011C12023)+2 种基金the Important Scientific & Technical Innovation Project of Hangzhou(No.20131812A25)the Foundation of Fuli Institute of Food Science of Zhejiang University(No.KY201404)the National Natural Science Foundation of China(No.31271848)
文摘Major royal jelly protein 1（MRJP1）, designated apalbumin 1, has been regarded as a freshness marker of royal jelly（RJ）. A MRJP1-specific peptide（IKEALPHVPIFD） identified by bioinformatics analysis of homologous members of the major royal protein family was synthesized and used to raise polyclonal anti-MRJP1 antibody（antiSP-MRJP1 antibody）. Western blot analysis showed that anti-SP-MRJP1 antibody only reacted with MRJP1 in RJ. In contrast, the previously reported antibody against recombinant MRJP1（anti-R-MRJP1 antibody） reacted with other members of MRJP family in RJ. Enzyme-linked immunosorbent assay（ELISA） using anti-SP-MRJP1 antibody demonstrated that MRJP1 content in RJ stored at 40 °C significantly degraded by 37.3%, 55.9%, 58.0%, 60.6%, 65.7%, 72.7%, and 73.1% at 7, 14, 21, 28, 35, 42, and 49 d, respectively, when compared with MRJP1 content in fresh RJ（0 d）. Optical density analysis of MRJP bands from sodium dodecyl sulfate-polyacrylamide gel electrophoresis（SDS-PAGE） profiles demonstrated that the degradation of MRJP1, MRJP2, MRJP3, and MRJP5 in RJ was strongly and positively correlated with the period of storage（P〈0.0001）. Our results indicated anti-SP-MRJP1 antibody was highly specific for MRJP1, and ELISA using the antibody is a sensitive and easy-to-use method to determine the freshness and authenticity of RJ.
基金supported by the National Natural Science Foundation of China(31322051,31320103902)the Foundation for the Author of National Excellent Doctoral Dissertation of PR China(201178)
文摘The complete mitochondrial genome of Acanthacorydalis orientalis （McLachlan） was determined and analyzed （GenBank accession number： KF840564）. This paper represents the first mitochondrial （mt） genome of the dobsonfly genus Acanthacorydalis. The mt genome is a typical circular DNA of 15 753 bp composed of 37 genes with an A＋T content of 76.7%. It has an ancestral gene arrangement of the insect mt genomes. Eleven of the 13 PCGs start with codon ATT and ATG,while several exceptions such as ATA and TTG respectively for atp 8 and nad 1 are also present. Five protein-coding genes end with a single T, while others have a termination codon of TAA or TAG. Most tRNAs are folded into the typical clover-leaf structure except for the trnS 1 whose dihydrouridine arm was a simple loop. The secondary structure of rrnl consists of five structural domains and 50 helices, while the rrns includes three domains and 34 helices. The control region has a stretches of Ts with a length of 22 bp but lacks obvious tandem repeat region. Both Bayesian inference and maximum likelihood （ML） analyses, based on all 13 protein-coding genes and two rRNA genes of the mt genomes, confirm the monophyly of Corydalinae and suggest that Acanthacorydalis, together with Corydalus, which is an endemic dobsonfly genus from the New World, belong to a monophyletic lineage.
基金Supported by the Open Project Fund of Henan International Joint Laboratory of Prevention and Treatment of Pediatric Diseases,No.SS202204.
文摘Chronic inflammation,through a variety of mechanisms,plays a key role in the occurrence and development of digestive system malignant tumors(DSMTs).In this study,we feature and provide a comprehensive understanding of DSMT prevention strategies based on preventing or controlling chronic inflammation.The development and evaluation of cancer prevention strategies is a longstanding process.Cancer prevention,especially in the early stage of life,should be emphasized throughout the whole life course.Issues such as the time interval for colon cancer screening,the development of direct-acting antiviral drugs for liver cancer,and the Helicobacter pylori vaccine all need to be explored in long-term,large-scale experiments in the future.
基金the National Natural Science Foundation of China(Grant No.11904081)the Natural Science Foundation of Henan Province,China(Grant Nos.202300410247 and 21A140013)。
文摘By using first-principles calculation,we study the properties of h-BN/BC_(3)heterostructure and the effects of external electric fields and strains on its electronic and optical properties.It is found that the semiconducting h-BN/BC_(3)has good dynamical stability and ultrahigh stiffness,enhanced electron mobility,and well-preserved electronic band structure as the BC_(3)monolayer.Meanwhile,its electronic band structure is slightly modified by an external electric field.In contrast,applying an external strain can mildly modulate the electronic band structure of h-BN/BC_(3)and the optical property exhibits an apparent redshift under a compressive strain relative to the pristine one.These findings show that the h-BN/BC_(3)hybrid can be designed as optoelectronic device with moderately strain-tunable electronic and optical properties.
基金Priority Theme Setting of Traditional Chinese Medicine for Malignant Tumor and Implementation Scheme Design of Evidence-based Research(No.K-858)Beijing Municipal Commission of Science and Technology(No.D161100005116001)。
文摘Objective:The mechanism of Yupingfeng Powder in the treatment of non-small cell lung cancer was analyzed by network pharmacology and molecular docking method.Methods:Search the related literature and TCMSP database,query the chemical composition and action target of Yupingfeng powder,query the disease database of Genecards,OMIM,DisGeNET,Drugbank,etc.,use"non-small cell lung cancer"as the keyword to search the disease-related target,select the intersection target with Yupingfeng powder as the research target,and use Cytoscape 3.7.2 software to construct the active component-target network map.The protein-protein interaction network map was constructed by using STRING database,and the treatment core targets were further screened by topological parameters,and GO analysis and KEGG signal pathway enrichment analysis were carried out.Finally,molecular docking was verified.Results:37 active components of Yupingfeng Powder were screened,including 146 common targets and 44 core targets.GO analysis and KEGG analysis show that the core target participates in many biological processes such as angiogenesis and cell proliferation,and acts on a variety of signal pathways such as AGE-RAGE,IL-17,TNF,MAPK and so on.Molecular docking shows that the core compound has good docking activity with the target.Conclusion:Network pharmacological analysis shows that Yupingfeng powder in the treatment of non-small cell lung cancer involves multi-target and multi-pathway mechanism,and the drug and target have good docking activity,which can provide theoretical basis for follow-up experimental research.
