{"title":"Enzyme–and GSH–responsive gelatin coated magnetic multi-shell hollow mesoporous organosilicon nanoparticles for avermectin controlled release","authors":"Jiazhen Gao, Pengyu Luo, Siqiang Shen, Ying Liu, Xiaoyun Li, Xiaoying Wang","doi":"10.1186/s42825-025-00191-z","DOIUrl":"10.1186/s42825-025-00191-z","url":null,"abstract":"<div><p>To enhance the utilization of pesticides and reduce environmental risks, we constructed the magnetic recyclable and dual stimulus-responsive microspheres to achieve on-demand pesticide release. Magnetic multi-shell hollow mesoporous organosilicon nanoparticles (mMSN) were prepared by one-step hydrothermal method and loaded with pesticide avermectin (A@mMSN), afterward A@mMSN was coated with gelatin through emulsification and chemical cross-linking to prepare A@mMSN@G microspheres (21.5 ± 9.7 μm). After being absorbed by the pests, the gelatin layer was hydrolyzed with the neutral protease, and the disulfide bonds within mMSN framework were decomposed by glutathione (GSH), endowing A@mMSN@G microspheres with enzyme and GSH responsiveness to achieve sustained avermectin release till 7 days (about 3.5 times that of the commercial avermectin emulsion). Importantly, the A@mMSN@G microspheres containing Fe<sub>3</sub>O<sub>4</sub> nanoparticles could be easily magnetically collected from soil with a recovery ratio of 63.7%, to reduce the environmental risks. With excellent biosafety, A@mMSN@G microspheres showed outstanding pest control effects till two weeks and the growth of cabbage was not affected by it. Therefore, based on the recyclability and dual stimulus-responsive controllable release, the fabricated A@mMSN@G microspheres have broad application potential in pesticide delivery.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":640,"journal":{"name":"Journal of Leather Science and Engineering","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://JLSE.SpringerOpen.com/counter/pdf/10.1186/s42825-025-00191-z","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143761665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pengfei Qiao, Jie Liu, Liqiang Jin, Feifei Zhang, Zhonghe Feng, Yulu Wang
{"title":"Ecofriendly and sustainable metal-free leather tanning using novel poly(carbamoyl sulfonate) technology","authors":"Pengfei Qiao, Jie Liu, Liqiang Jin, Feifei Zhang, Zhonghe Feng, Yulu Wang","doi":"10.1186/s42825-025-00190-0","DOIUrl":"10.1186/s42825-025-00190-0","url":null,"abstract":"<div><p>Despite its potential as a metal-free tanning agent capable of eliminating Cr pollution in the leather industry, the conventional preparation of poly(carbamoyl sulfonate) faces challenges, such as the extensive use of low-boiling organic solvents and low blocking ratios of –NCO groups. Herein, a liquid sulfonate chain extender, 2,3-dihydroxypropanesulfonic acid triethylamine salt (DHPSTEA), was initially synthesized. A series of poly(carbamoyl sulfonate) tanning agents (CTAS) were then synthesized using DHPSTEA and various diisocyanates as reaction monomers, with sodium bisulfite serving as the blocking agent and without utilizing organic solvents. CTAS demonstrated a blocking ratio of > 99% and satisfactory stability under acidic conditions at room temperature. Application experiments revealed that CTAS exhibited excellent tanning performance, with the parent diisocyanate monomer markedly influencing their tanning properties. CTAS synthesized with dicyclohexylmethane-4,4′-diisocyanate resulted in optimal product performance, yielding a shrinkage temperature of 83.2 °C at a 6% dosage. CTAS-tanned leather displayed excellent collagen fiber dispersion, yellowing resistance and mechanical properties. Additionally, CTAS is easy to biodegrade (BOD<sub>5</sub>/COD > 0.45). Thus, this novel metal-free tanning agent holds a great potential as a sustainable alternative to traditional chrome tanning agent.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":640,"journal":{"name":"Journal of Leather Science and Engineering","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://JLSE.SpringerOpen.com/counter/pdf/10.1186/s42825-025-00190-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A novel approach for analyzing the migration behavior of fatliquors within leather","authors":"Ruibin Li, Chen Yang, Yuanqing Liu, Yue Yu","doi":"10.1186/s42825-025-00189-7","DOIUrl":"10.1186/s42825-025-00189-7","url":null,"abstract":"<div><p>Fatliquor migration within the leather matrix may lead to the formation of fatty spew, oil patches and fogging, posing challenges to the production of high-quality leather. Currently, it lacks a straightforward and effective method for analyzing fatliquor migration behavior. This investigation introduces a novel approach for analyzing fatliquor migration by measuring its spreading area on collagen fiber membranes. By applying 300 mg of fatliquor onto 0.5 mm square membranes (10 cm × 10 cm), distinct oil spots were observed, enabling analysis of migration behavior. Using stearic acid as a standard reference compound effectively minimized the influence of different leather sections on fatliquor migration. Fatliquors with low molecular weight, low melting point and high aliphatic ester content exhibited obvious migration potential. Organic-tanned leathers and sulfated fatliquors displayed weak interactions, resulting in easy fatliquor migration within the leather. Conversely, metal-tanned leathers and phosphorylated fatliquors demonstrated strong interactions, effectively hindering migration. This research provides valuable practical and theoretical insights for developing effective strategies to prevent and control fatliquor migration in leather production.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":640,"journal":{"name":"Journal of Leather Science and Engineering","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://JLSE.SpringerOpen.com/counter/pdf/10.1186/s42825-025-00189-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yan Liu, Can Cheng, Jiaqi Xing, Zhaoxi Deng, Xu Peng
{"title":"Recent advances and practical challenges in the research of decellularized matrices for the fabrication of tiny-diameter artificial arteries","authors":"Yan Liu, Can Cheng, Jiaqi Xing, Zhaoxi Deng, Xu Peng","doi":"10.1186/s42825-025-00192-y","DOIUrl":"10.1186/s42825-025-00192-y","url":null,"abstract":"<div><p>Despite advances in synthetic vascular grafts, replicating the dynamic biological functions of native microvasculature remains a critical challenge in cardiovascular tissue engineering. While polymer-based conduits offer scalability and dimensional versatility, the inherent bioinert nature leads to high failure rates in < 6 mm diameter applications due to thrombotic complications and mechanical mismatch with host tissue. Decellularized matrices (dECM) scaffolds emerge as a biologically strategic alternative, preserving crucial vascular basement membrane components and biomechanical cues through collagen/elastin retention. The present review systematically elaborates the research advancements, critical determinants, and practical challenges in utilizing dECM for tiny-diameter artificial vessels (inner diameter < 3 mm), while proposing three forward-looking solutions to address clinical translation barriers: (1) matrix optimization strategies through diameter-specific compliance matching and elastin reconstitution; (2) sterilization and preservation protocols preserving structural integrity with controlled immunogenicity; (3) immunomodulatory engineering via macrophage polarization regulation. The proposed methodologies establish innovative avenues for the engineering and clinical transplantation of tiny-diameter artificial vessels.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":640,"journal":{"name":"Journal of Leather Science and Engineering","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://JLSE.SpringerOpen.com/counter/pdf/10.1186/s42825-025-00192-y","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143676376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Haofei Xu, Yang Liu, Longxue Qiu, Antonio Lorenzo Masa Mbomio Mangue, Juntao Zhang, Benmei Wei, Lian Zhu, Chengzhi Xu, Evgeny A. Shirshin, Haibo Wang
{"title":"Preparation and application of collagen-based hemostatic materials: a review","authors":"Haofei Xu, Yang Liu, Longxue Qiu, Antonio Lorenzo Masa Mbomio Mangue, Juntao Zhang, Benmei Wei, Lian Zhu, Chengzhi Xu, Evgeny A. Shirshin, Haibo Wang","doi":"10.1186/s42825-025-00193-x","DOIUrl":"10.1186/s42825-025-00193-x","url":null,"abstract":"<div><p>Traumatic wounds are the prevalent scenarios encountered in battleground and emergency rooms. The rapid and effective hemostasis is imperative for life saving in these scenarios, for which the development of high-efficiency and biocompatible hemostatic materials is essential. Due to its excellent hemostatic property and biocompatibility, collagen has emerged as an ideal component of hemostatic materials. Furthermore, the properties of collagen-based hemostatic materials could be improved by the integration of other biomacromolecules, such as alginate, cellulose derivatives, and chitosan derivatives. Therefore, more and more novel hemostatic materials with exceptional hemostatic properties have been developed. This review aims to overview recent progress of collagen-based hemostatic materials. Firstly, the hemostatic mechanism of collagen was introduced. Secondly, various forms of collagen-based hemostatic materials, such as hydrogels, sponges, and powders, were highlighted. Thirdly, composite hemostatic materials of collagen and other biomacromolecules were overviewed. Finally, the outlook of collagen-based hemostatic materials was discussed.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":640,"journal":{"name":"Journal of Leather Science and Engineering","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://JLSE.SpringerOpen.com/counter/pdf/10.1186/s42825-025-00193-x","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143655325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A simple method for identifying the elementary units governing the mechanical properties in leather materials","authors":"Wenjun Long, Liangqiong Peng, Jiheng Li, Yue Yu, Wenhua Zhang","doi":"10.1186/s42825-024-00184-4","DOIUrl":"10.1186/s42825-024-00184-4","url":null,"abstract":"<div><p>Understanding the mechanical properties of leather is crucial for expanding its range of application, but the influence of collagen fibril bundles (FBs) remains unclear. In this study, 12 kinds of bovine leather were prepared with varying FB sizes using Cr(III), Zr(IV) and aldehyde as the crosslinking agents along with different fillers such as rapeseed oil phosphate, polyacrylic acid and their combination. The experimental results revealed that the tear strength of leather was affected by the crosslinking agents, which could be further adjusted by the filler. Accordingly, a simple method using mercury intrusion porosimetry has been proposed for determining the FB size based on the crack-bridging model. Specifically, the tear strength of leather showed a strong correlation with the FB radius where the strength increased with the decrease in FB radius. This indicated that FBs served as the elementary units contributing to loading strength. These findings may facilitate the development of cleaner technologies for fabricating high-performance leather through the regulation of FB size.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":640,"journal":{"name":"Journal of Leather Science and Engineering","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://JLSE.SpringerOpen.com/counter/pdf/10.1186/s42825-024-00184-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143521646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Identification of a dual-function peptide for the detection and haematopoietic potency assessment of type I collagen hydrolysates","authors":"Guiya Deng, Jiajun Wang, Cuicui Men, Keyi Cao, Chengming Li, Liang Zheng, Haibin Liu, Shangwei Guo, Yaqin Huang","doi":"10.1186/s42825-024-00188-0","DOIUrl":"10.1186/s42825-024-00188-0","url":null,"abstract":"<div><p>Type I collagen hydrolysate with haematopoietic activity has shown tremendous potential for application in the functional food fields. The identification of peptide with haematopoietic activity to ensure the efficiency of functional foods remains challenging because of the vast combinatorial potential of short peptides from collagen hydrolysates. In the present study, we identified a novel marker peptide (the I-1 peptide, GAAGLpGPK, p: hydroxyproline) for type I collagen with haematopoietic capabilities via theoretical sequence analysis and computational prediction of activity. The I-1 peptide was shown to increase the survival rate of haematopoietic stem cells following injury induced by 5-fluorouracil (5-FU), increasing the survival rate from 65.40 to 105.28%, thereby exhibiting significant haematopoietic activity. More importantly, the mechanism underlying the haematopoietic activity of the I-1 peptide was analogous to activate the JAK/STAT signalling pathway mediated by granulocyte‒macrophage colony‒stimulating factor. On this basis, a high-precision method for the detection of type I collagen hydrolysates was developed using the I-1 peptide (relative standard deviation = 1.57%). This study not only provides novel perspectives for the exploration of haematopoietic peptides but also offers a new methodology for controlling the bioactivity of collagen-based food products.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":640,"journal":{"name":"Journal of Leather Science and Engineering","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://JLSE.SpringerOpen.com/counter/pdf/10.1186/s42825-024-00188-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143489638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Topological data analysis with digital microscope leather images for animal species classification","authors":"Takuya Ehiro, Takeshi Onji","doi":"10.1186/s42825-024-00187-1","DOIUrl":"10.1186/s42825-024-00187-1","url":null,"abstract":"<div><p>This study presents a method for classifying cow and horse leather using a small number of digital microscope images and topological data analysis. In this method, hair pore coordinates in the images are used as essential information for classification. First, the coordinates were semiautomatically extracted using conventional image processing methods and persistent homology (PH) computation. Binary images with white pixels corresponding to the coordinates were generated, and their PHs were computed using filtration based on the Manhattan distance. In addition to the pairwise distance between the two pores, zeroth- and first-order lifetimes were used as explanatory variables to construct the classifier. Among the three explanatory variables, the zeroth-order lifetime resulted in the highest classification accuracy (86%) for the test data. Furthermore, we constructed logistic regression (LR) and random forest (RF) models using the zeroth-order lifetime computed from all images and conducted model interpretation. In both LR and RF, information on a zeroth-order lifetime of less than 10 was used as an important explanatory variable. Additionally, the inverse analysis of birth–death pairs suggested that the zeroth-order lifetime contains topological information distinct from the conventional pairwise distance. Our proposed method is designed to be robust in data-limited situations because it only uses hair pore coordinates as explanatory variables and does not require other information, such as hair pore density or pore size. This study demonstrates that accurate classifiers can be obtained using topological features related to hair pore arrangement.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":640,"journal":{"name":"Journal of Leather Science and Engineering","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://JLSE.SpringerOpen.com/counter/pdf/10.1186/s42825-024-00187-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ming Yang, Xia Li, Bo Wang, Xian Liu, Bo Zhang, Xue-Pin Liao
{"title":"Collagen peptide protects Saccharomyces cerevisiae from furfural stress for enhancing bioethanol synthesis","authors":"Ming Yang, Xia Li, Bo Wang, Xian Liu, Bo Zhang, Xue-Pin Liao","doi":"10.1186/s42825-024-00183-5","DOIUrl":"10.1186/s42825-024-00183-5","url":null,"abstract":"<div><p>The efficient biosynthesis is important for the sustainable development of lignocellulosic ethanol industry, but it is limited by furfural stress produced with cellulose pretreatment. Collagen peptide (CP), as an affluent protein resource, considerably improved the tolerance of <i>Saccharomyces cerevisiae</i> against furfural stress. When the furfural concentration was 2 g/L, the residual sugar concentration was reduced from 122.39 to 8.90 g/L, and the final ethanol yield increased from 30.69 to 87.27 g/L in the presence of CP. In addition, the ethanol yield in CP containing media was higher than those in other peptides. Transcriptome analysis showed CP can improve the expression of genes (<i>FBA1</i>, <i>PDC1</i>, <i>PDC6</i>, and <i>ENO1</i>) associated with glycolysis to promote sugar utilization, and enhance ethanol biosynthesis under furfural stress, which were further verified by quantitative real-time PCR. These results indicated that CP is a promising protectant and accelerator for bioethanol biosynthesis.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":640,"journal":{"name":"Journal of Leather Science and Engineering","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://JLSE.SpringerOpen.com/counter/pdf/10.1186/s42825-024-00183-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jiyu Liang, Jianhui Wu, Chunhua Wang, Jun Sang, Keshuai Ren, To Ngai, Wei Lin
{"title":"Ethylene vinyl acetate as a multifunctional compatibilizer for natural rubber/cis-1,4-polybutadiene rubber blends with enhanced compatibility, filler dispersion and mechanical properties","authors":"Jiyu Liang, Jianhui Wu, Chunhua Wang, Jun Sang, Keshuai Ren, To Ngai, Wei Lin","doi":"10.1186/s42825-024-00181-7","DOIUrl":"10.1186/s42825-024-00181-7","url":null,"abstract":"<div><p>The blending of natural rubber (NR) with <i>cis</i>-1,4-polybutadiene rubber (BR) has gained widespread attention due to its potential in enhancing the low temperature resistance and abrasion resistance of NR. However, the incompatibility between NR and BR as well as the non-uniform distribution of fillers often have an adverse impact on the mechanical properties. Herein, we propose a facile approach to modulate the multi-scale structures in NR/BR blends including polymer compatibility and filler distribution by introducing ethylene vinyl acetate (EVA) with varying vinyl acetate (VA) content as multifunctional compatibilizers. The results indicate that the cure characteristics (i.e., processability) and mechanical properties of NR/BR blends can be readily tailored through adjustment of the VA content in EVA. When the VA content in EVA is increased to 18% (EVA-18), the NR/BR blends simultaneously exhibit favorable processability and mechanical properties. The microstructural analysis demonstrates that the introduction of EVA-18 not only enhances the compatibility between NR and BR with significantly reduced domain size, but also improves fillers dispersion in the rubber matrix. The presence of EVA-18 at concentrations up to 20 parts per hundred of rubber (phr) in NR/BR vulcanizates improves the mechanical properties by approximately 24% compared to un-compatibilized NR/BR vulcanizates, which is superior to the most present studies. This work will be beneficial for the development of NR/BR blends in the industry and provide a guideline for designing efficient compatibilizers for other immiscible rubber blends.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":640,"journal":{"name":"Journal of Leather Science and Engineering","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://JLSE.SpringerOpen.com/counter/pdf/10.1186/s42825-024-00181-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}