Pub Date : 2022-12-13DOI: 10.25135/rnp.370.2210.2598
I. Gülçin, Hatice Kiziltaş, Zeynebe Bi̇ngöl, A. Gören, S. Alwasel
{"title":"Analysis of Phenolic Compounds by LC-HRMS and Determination of Antioxidant and Enzyme Inhibitory Properties of Verbascum speciousum Schrad","authors":"I. Gülçin, Hatice Kiziltaş, Zeynebe Bi̇ngöl, A. Gören, S. Alwasel","doi":"10.25135/rnp.370.2210.2598","DOIUrl":"https://doi.org/10.25135/rnp.370.2210.2598","url":null,"abstract":"","PeriodicalId":21053,"journal":{"name":"Records of Natural Products","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46662372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-13DOI: 10.25135/rnp.368.2206.2499
Cheng Peng, Jie Yan, D. Guo, Jin Pei, Yun Deng, Ding Liu, Xiaofang Xie, Wenxiu Guo, Lanyu Zhou, Bin Xiao, Xue-yan Huo, Yunjie Hu
{"title":"Eupalinolide N, a Previously Undescribed Sesquiterpene Lactone with Anti-inflammatory Activity from Eupatorium lindleyanum","authors":"Cheng Peng, Jie Yan, D. Guo, Jin Pei, Yun Deng, Ding Liu, Xiaofang Xie, Wenxiu Guo, Lanyu Zhou, Bin Xiao, Xue-yan Huo, Yunjie Hu","doi":"10.25135/rnp.368.2206.2499","DOIUrl":"https://doi.org/10.25135/rnp.368.2206.2499","url":null,"abstract":"","PeriodicalId":21053,"journal":{"name":"Records of Natural Products","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41465398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-11-26DOI: 10.25135/rnp.365.2205.2459
Na Liu, Yajie Sun, Yulin Sun, Yilin Sun, Ting Luo, Fengying Yang, Peng Wang, Di Ge
: A total of 23 diterpenoids were isolated from the seeds of Euphorbia lathyris , and one new compound ( 1 ) and twenty-two known compounds ( 2-23 ) were characterized by using 1D- and 2D-NMR spectra and HRESIMS analysis. Cytotoxicity of the isolated compounds against BT-549 and MDA-MB-231 cancer cells lines were evaluated further. Compounds 3 , 10 , 14 , and 22 were found to exhibit considerable cytotoxic activities against BT-549 cells, with IC 50 values ranging from 4.7 to 10.1 μM. Compounds 1 , 2 , 14 and 22 were able to inhibit the MDA-MB-231 cell line growth with IC 50 values of 5.7 to 21.3 μM, while other compounds showed no obvious inhibitory effects.
{"title":"Diterpenoids from the Seeds of Euphorbia Lathyris and their Cytotoxic Acitivity","authors":"Na Liu, Yajie Sun, Yulin Sun, Yilin Sun, Ting Luo, Fengying Yang, Peng Wang, Di Ge","doi":"10.25135/rnp.365.2205.2459","DOIUrl":"https://doi.org/10.25135/rnp.365.2205.2459","url":null,"abstract":": A total of 23 diterpenoids were isolated from the seeds of Euphorbia lathyris , and one new compound ( 1 ) and twenty-two known compounds ( 2-23 ) were characterized by using 1D- and 2D-NMR spectra and HRESIMS analysis. Cytotoxicity of the isolated compounds against BT-549 and MDA-MB-231 cancer cells lines were evaluated further. Compounds 3 , 10 , 14 , and 22 were found to exhibit considerable cytotoxic activities against BT-549 cells, with IC 50 values ranging from 4.7 to 10.1 μM. Compounds 1 , 2 , 14 and 22 were able to inhibit the MDA-MB-231 cell line growth with IC 50 values of 5.7 to 21.3 μM, while other compounds showed no obvious inhibitory effects.","PeriodicalId":21053,"journal":{"name":"Records of Natural Products","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2022-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47346277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-11-26DOI: 10.25135/rnp.367.2208.2547
I. Ogunwande, L. Huong, L. Giang, D. Dai
: Essential oils from the leaves of Alphonsea monogyma Merr. & Chun and Goniothalamus banii B. H. Quang, R. K. Choudhary & V.T. Chinh from Vietnam were obtained by hydrodisitllation and the chemical components determined by gas chromatography (GC) and gas chromatography coupled with mass spectrometry (GC/MS). The antimicrobial assay was conducted by microdilution broth method. The respective yields of the essential oils were 0.18% (v/w) and 0.355% (v/w), respectively. The major components of A. monogyma were ( E )-caryophyllene (13.8%), -cadinene (12.5%), bicyclogermacrene (12.4%), cis -β-elemene (12.1%), and germacrene D (11.4%). However, myrcene (47.1%), α-pinene (9.7%) and ( E )-caryophyllene (9.1%) were the dominant constituents of the essential oil of G. banii . The leaf essential oil of A. monogyma displayed potent antimicrobial activity towards the Gram-positive microorganisms of Enterococcus faecalis ATCC29212, Staphylococcus aureus ATCC25923 and Bacillus cereus ATCC14579 with minimum inhibitory concentration (MIC) values of 2.23 µg/mL, 10.45 µg/mL and 10.33 µg/mL, respectively. On the other hand, essential oil from G. banii exhibited the most effective antibacterial against Gram-negative Pseudomonas aeruginosa ATCC27853 (MIC 5.67 µg/mL), and anti-candidal action towards Candida albicans ATCC10231 (MIC 32.67 µg/mL). The chemical constituents and antimicrobial activity of the essential oils of A. monogyma and G. banii were being reported for the first time.
{"title":"Essential Oil Compositions and Antimicrobial Activity of the Leaves of Alphonsea monogyma Merr. & Chun and Goniothalamus banii B. H. Quang, R. K. Choudhary & V.T. Chinh from Vietnam","authors":"I. Ogunwande, L. Huong, L. Giang, D. Dai","doi":"10.25135/rnp.367.2208.2547","DOIUrl":"https://doi.org/10.25135/rnp.367.2208.2547","url":null,"abstract":": Essential oils from the leaves of Alphonsea monogyma Merr. & Chun and Goniothalamus banii B. H. Quang, R. K. Choudhary & V.T. Chinh from Vietnam were obtained by hydrodisitllation and the chemical components determined by gas chromatography (GC) and gas chromatography coupled with mass spectrometry (GC/MS). The antimicrobial assay was conducted by microdilution broth method. The respective yields of the essential oils were 0.18% (v/w) and 0.355% (v/w), respectively. The major components of A. monogyma were ( E )-caryophyllene (13.8%), -cadinene (12.5%), bicyclogermacrene (12.4%), cis -β-elemene (12.1%), and germacrene D (11.4%). However, myrcene (47.1%), α-pinene (9.7%) and ( E )-caryophyllene (9.1%) were the dominant constituents of the essential oil of G. banii . The leaf essential oil of A. monogyma displayed potent antimicrobial activity towards the Gram-positive microorganisms of Enterococcus faecalis ATCC29212, Staphylococcus aureus ATCC25923 and Bacillus cereus ATCC14579 with minimum inhibitory concentration (MIC) values of 2.23 µg/mL, 10.45 µg/mL and 10.33 µg/mL, respectively. On the other hand, essential oil from G. banii exhibited the most effective antibacterial against Gram-negative Pseudomonas aeruginosa ATCC27853 (MIC 5.67 µg/mL), and anti-candidal action towards Candida albicans ATCC10231 (MIC 32.67 µg/mL). The chemical constituents and antimicrobial activity of the essential oils of A. monogyma and G. banii were being reported for the first time.","PeriodicalId":21053,"journal":{"name":"Records of Natural Products","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2022-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43118826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-11-25DOI: 10.25135/rnp.364.2207.2528
Ksenija S. Mileski, A. Ćirić, U. Gašić, Lazar D. Žarković, Z. Krivošej, A. Džamić
: The traditional European medicinal plant Laserpitium siler L. was studied for the first time for the chemical composition and in vitro biological potential of extracts from fruits and aerial parts. Eight extracts were subjected to spectrophotometric detection and LC-MS quantification of phenolics. The bioactivity assessment comprised antioxidant, antimicrobial, anti-denaturation, acetylcholinesterase, tyrosinase, α-amylase, and α-glucosidase inhibition assays. The spectrophotometric analyses showed that the alcoholic extracts contained the most phenolic acids and coumarins. Among the twenty quantified compounds in the methanolic extracts, chlorogenic acid (29.10 mg/kg in the fruits; 47.00 mg/kg in the aerial parts) and p -coumaric acid (7.50 mg/kg in the fruits; 9.50 mg/kg in the aerial parts) were the most abundant. The DPPH/ABTS/BBT tests showed the strongest antioxidant effect of the methanolic extract of the aerial parts. The results of the microdilution assay referred to stronger antibacterial than antifungal activity, with the essential oil being as effective as the antibiotics used. The extracts expressed promising activity against P . aeruginosa PAO1 biofilm formation and pyocyanin synthesis. The prevention of BSA denaturation by the ethanolic extracts was comparable to diclofenac (91.08%-fruits, 95.08%-aerial parts, and 95.60%-diclofenac). IC 50 values showed greater enzyme inhibitory potential of aerial parts and the highest reduction of α-glucosidase activity.
{"title":"Comparative Analyses on Chemical Constituents and Biological Activities of Laserpitium siler L. from Serbia","authors":"Ksenija S. Mileski, A. Ćirić, U. Gašić, Lazar D. Žarković, Z. Krivošej, A. Džamić","doi":"10.25135/rnp.364.2207.2528","DOIUrl":"https://doi.org/10.25135/rnp.364.2207.2528","url":null,"abstract":": The traditional European medicinal plant Laserpitium siler L. was studied for the first time for the chemical composition and in vitro biological potential of extracts from fruits and aerial parts. Eight extracts were subjected to spectrophotometric detection and LC-MS quantification of phenolics. The bioactivity assessment comprised antioxidant, antimicrobial, anti-denaturation, acetylcholinesterase, tyrosinase, α-amylase, and α-glucosidase inhibition assays. The spectrophotometric analyses showed that the alcoholic extracts contained the most phenolic acids and coumarins. Among the twenty quantified compounds in the methanolic extracts, chlorogenic acid (29.10 mg/kg in the fruits; 47.00 mg/kg in the aerial parts) and p -coumaric acid (7.50 mg/kg in the fruits; 9.50 mg/kg in the aerial parts) were the most abundant. The DPPH/ABTS/BBT tests showed the strongest antioxidant effect of the methanolic extract of the aerial parts. The results of the microdilution assay referred to stronger antibacterial than antifungal activity, with the essential oil being as effective as the antibiotics used. The extracts expressed promising activity against P . aeruginosa PAO1 biofilm formation and pyocyanin synthesis. The prevention of BSA denaturation by the ethanolic extracts was comparable to diclofenac (91.08%-fruits, 95.08%-aerial parts, and 95.60%-diclofenac). IC 50 values showed greater enzyme inhibitory potential of aerial parts and the highest reduction of α-glucosidase activity.","PeriodicalId":21053,"journal":{"name":"Records of Natural Products","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2022-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45884088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-29DOI: 10.25135/rnp.389.2210.2400
M. Öztürk, Ahmet C. Gören
{"title":"Editorial","authors":"M. Öztürk, Ahmet C. Gören","doi":"10.25135/rnp.389.2210.2400","DOIUrl":"https://doi.org/10.25135/rnp.389.2210.2400","url":null,"abstract":"","PeriodicalId":21053,"journal":{"name":"Records of Natural Products","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2022-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44476165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-29DOI: 10.25135/rnp.363.2210.2593
Q. Chen, Yifang Chen, Ying Lu, Jian-Qiang Zhao
: The marine-derived fungus SCZ-1 was cultured on rice solid medium. The fermented materials was extracted using ethyl acetate to afford an extract, which was separated by repeated column chromatography to afford three polyketides and five alkaloids, including 2 new polyketides ( 1 and 2 ). The known compounds were identified to be penipyrol A ( 3 ), cyclopenin ( 4 ), cyclopenol ( 5 ), terretrione D ( 6 ), viridicatol ( 7 ), and viridicatin ( 8 ). The structures of 1 and 2 were determined by extensive analyses of spectroscopic data (1D and 2D NMR, and HRESIMS). The absolute configuration of 2 was assigned by comparison of the experimental ECD spectrum with calculated ECD spectrum. Compound 1 , bearing a two-carbon side chain at C-2, is seldom found among natural isocoumarins. All metabolites were screened for their inhibitory effects toward -glucosidase, only compound 8 showed weak activity with an IC 50 value of 548 M.
将海洋真菌SCZ-1在水稻固体培养基上培养。发酵材料用乙酸乙酯提取得到提取物，通过重复柱色谱分离得到三种聚酮和五种生物碱，包括两种新的聚酮（1和2）。已知的化合物被鉴定为penipropol A（3）、环蛋白（4）、环醇（5）、terretrione D（6）、virididicol（7）和virididicin（8）。通过对光谱数据（1D和2D NMR以及HRESIMS）的广泛分析来确定1和2的结构。通过将实验ECD光谱与计算的ECD光谱进行比较来分配2的绝对构型。化合物1在C-2具有双碳侧链，在天然异香豆素中很少发现。对所有代谢产物的抑制作用进行了筛选 -葡萄糖苷酶，只有化合物8表现出较弱的活性，IC50值为548 M
{"title":"Polyketides and Alkaloids from the Fungus Penicillium sp.","authors":"Q. Chen, Yifang Chen, Ying Lu, Jian-Qiang Zhao","doi":"10.25135/rnp.363.2210.2593","DOIUrl":"https://doi.org/10.25135/rnp.363.2210.2593","url":null,"abstract":": The marine-derived fungus SCZ-1 was cultured on rice solid medium. The fermented materials was extracted using ethyl acetate to afford an extract, which was separated by repeated column chromatography to afford three polyketides and five alkaloids, including 2 new polyketides ( 1 and 2 ). The known compounds were identified to be penipyrol A ( 3 ), cyclopenin ( 4 ), cyclopenol ( 5 ), terretrione D ( 6 ), viridicatol ( 7 ), and viridicatin ( 8 ). The structures of 1 and 2 were determined by extensive analyses of spectroscopic data (1D and 2D NMR, and HRESIMS). The absolute configuration of 2 was assigned by comparison of the experimental ECD spectrum with calculated ECD spectrum. Compound 1 , bearing a two-carbon side chain at C-2, is seldom found among natural isocoumarins. All metabolites were screened for their inhibitory effects toward -glucosidase, only compound 8 showed weak activity with an IC 50 value of 548 M.","PeriodicalId":21053,"journal":{"name":"Records of Natural Products","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2022-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44531358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-29DOI: 10.25135/rnp.355.2207.2518
Xinya Xu, Chun-Ju Lu, Zhenzhou Tang, Y. Liu, Cheng-Hai Gao, Haiyan Li, Ge Zhang, Zhi-wei Su
: Two new compounds, carneusins A-B ( 1-2 ), as well as fifteen known compounds ( 3-17 ), were isolated from the marine-derived fungus Aspergillus carneus GXIMD00519. Their structures were elucidated by the analysis of detailed spectroscopic data and quantum chemistry calculations. All the compounds were evaluated for their antibacterial, antibiofilm and cytotoxic effects. Compound 1 showed a moderate inhibitory effect against MRSA with the MIC value of 32 µg/mL. Compound 2 exhibited an anti-microfouling effect against biofouling bacterial Vibrio rotiferianus and Alteromonas macleodii with MIC value of 64 µg/mL. Compound 5 displayed antibiofilm activity against A. macleodii with the EC 50 value of 10.42 ± 0.58 µg/mL. Compounds 1 , 3 , 4 , 8 and 15 showed cytotoxicity against human pancreatic cancer cell lines SW1990, colorectal adenocarcinoma cell line DLD1, human pancreatic cancer cell line PANC1, and human hepatocellular carcinoma cell line Bel7402 with IC 50 values ranging of 2.75-17.77 µM.
{"title":"Secondary Metabolites from Marine-Derived Fungus Aspergillus carneus GXIMD00519","authors":"Xinya Xu, Chun-Ju Lu, Zhenzhou Tang, Y. Liu, Cheng-Hai Gao, Haiyan Li, Ge Zhang, Zhi-wei Su","doi":"10.25135/rnp.355.2207.2518","DOIUrl":"https://doi.org/10.25135/rnp.355.2207.2518","url":null,"abstract":": Two new compounds, carneusins A-B ( 1-2 ), as well as fifteen known compounds ( 3-17 ), were isolated from the marine-derived fungus Aspergillus carneus GXIMD00519. Their structures were elucidated by the analysis of detailed spectroscopic data and quantum chemistry calculations. All the compounds were evaluated for their antibacterial, antibiofilm and cytotoxic effects. Compound 1 showed a moderate inhibitory effect against MRSA with the MIC value of 32 µg/mL. Compound 2 exhibited an anti-microfouling effect against biofouling bacterial Vibrio rotiferianus and Alteromonas macleodii with MIC value of 64 µg/mL. Compound 5 displayed antibiofilm activity against A. macleodii with the EC 50 value of 10.42 ± 0.58 µg/mL. Compounds 1 , 3 , 4 , 8 and 15 showed cytotoxicity against human pancreatic cancer cell lines SW1990, colorectal adenocarcinoma cell line DLD1, human pancreatic cancer cell line PANC1, and human hepatocellular carcinoma cell line Bel7402 with IC 50 values ranging of 2.75-17.77 µM.","PeriodicalId":21053,"journal":{"name":"Records of Natural Products","volume":"1 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2022-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69542884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
: A new monoterpene rhamnoside, (+)-( R )- α -terpineol α -L-rhamnoside ( 1 ), along with ten known compounds ( 2 – 11 ) were obtained after purification of the ethanol extract of Cercis glabra legumes. Their structures were elucidated by spectroscopic evidence including NMR, optical rotatory dispersion (ORD), HR-ESI-MS and chemical hydrolysis. In the acetylcholinesterase inhibitory assay, compounds 3 and 8 showed high percentages of inhibition which were comparable to the activity of donepezil (a commercial drug, the positive control), and exhibited IC 50 values of 0.488, 0.391 mg/mL. These bioactive components could be promising acetylcholinesterase inhibitors.
{"title":"A New Monoterpene Rhamnoside from Cercis glabra Legumes","authors":"Penghua Shu, Tingxiao Xu, Yueyue Lou, Yabing Ge, Xiaoqing Lu, Pengpai Zhang","doi":"10.25135/rnp.362.2209.2593","DOIUrl":"https://doi.org/10.25135/rnp.362.2209.2593","url":null,"abstract":": A new monoterpene rhamnoside, (+)-( R )- α -terpineol α -L-rhamnoside ( 1 ), along with ten known compounds ( 2 – 11 ) were obtained after purification of the ethanol extract of Cercis glabra legumes. Their structures were elucidated by spectroscopic evidence including NMR, optical rotatory dispersion (ORD), HR-ESI-MS and chemical hydrolysis. In the acetylcholinesterase inhibitory assay, compounds 3 and 8 showed high percentages of inhibition which were comparable to the activity of donepezil (a commercial drug, the positive control), and exhibited IC 50 values of 0.488, 0.391 mg/mL. These bioactive components could be promising acetylcholinesterase inhibitors.","PeriodicalId":21053,"journal":{"name":"Records of Natural Products","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2022-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48266366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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