{"title":"[Construction and Validation of A Prognostic Model for Lung Adenocarcinoma \u2029Based on Ferroptosis-related Genes].","authors":"Zhanrui Zhang, Wenhao Zhao, Zixuan Hu, Chen Ding, Hua Huang, Guowei Liang, Hongyu Liu, Jun Chen","doi":"10.3779/j.issn.1009-3419.2025.102.04","DOIUrl":"10.3779/j.issn.1009-3419.2025.102.04","url":null,"abstract":"<p><strong>Background: </strong>Ferroptosis-related genes play a crucial role in regulating intracellular iron homeostasis and lipid peroxidation, and they are involved in the regulation of tumor growth and drug resistance. The expression of ferroptosis-related genes in tumor tissues can be used to predict patients' future survival times, aiding doctors and patients in anticipating disease progression. Based on the sequencing data of lung adenocarcinoma (LUAD) patients from The Cancer Genome Atlas (TCGA) database, this study identified genes involved in the regulation of ferroptosis, constructed a prognostic model, and evaluated the predictive performance of the model.</p><p><strong>Methods: </strong>A total of 1467 ferroptosis-related genes were obtained from the GeneCards database. Gene expression profiles and clinical data from 541 LUAD patients were collected from the TCGA database. The expression data of all ferroptosis-related genes were extracted, and differentially expressed genes were identified using R software. Survival analysis was performed on these genes to screen for those with prognostic value. Subsequently, a prognostic risk scoring model for ferroptosis-related genes was constructed using LASSO regression model. Each LUAD patient sample was scored, and the patients were divided into high-risk and low-risk groups based on the median score. Receiver operating characteristic (ROC) curves were plotted, and the area under the curve (AUC) was calculated. Kaplan-Meier survival curves were generated to assess model performance, followed by validation in an external dataset. Finally, univariate and multivariate Cox regression analyses were conducted to evaluate the independent prognostic value and clinical relevance of the model.</p><p><strong>Results: </strong>Through survival analysis, 121 ferroptosis-related genes associated with prognosis were initially identified. Based on this, a LUAD prognostic risk scoring model was constructed using 12 ferroptosis-related genes (ALG3, C1QTNF6, CCT6A, GLS2, KRT6A, LDHA, NUPR1, OGFRP1, PCSK9, TRIM6, IGF2BP1 and MIR31HG). The results indicated that patients in the high-risk group had significantly shorter survival time than those in the low-risk group (P<0.001), and the model demonstrated good predictive performance in both the training set (1-yr AUC=0.721) and the external validation set (1-yr AUC=0.768). Risk scores were significantly associated with the prognosis of LUAD patients in both univariate and multivariate Cox regression analyses (P<0.001), suggesting that this score is an important prognostic factor for LUAD patients.</p><p><strong>Conclusions: </strong>This study successfully established a LUAD risk scoring model composed of 12 ferroptosis-related genes. In the future, this model is expected to be used in conjunction with the tumor-node-metastasis (TNM) staging system for prognostic predictions in LUAD patients.</p>","PeriodicalId":39317,"journal":{"name":"中国肺癌杂志","volume":"28 1","pages":"22-32"},"PeriodicalIF":0.0,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11848621/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143483766","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}
中国肺癌杂志Pub Date : 2025-01-20DOI: 10.3779/j.issn.1009-3419.2025.101.01
Chengdao Li, Dongge Peng, Wei Sun
{"title":"[Dual Roles of Neutrophil Extracellular Traps in Lung Cancer: \u2029Mechanism Exploration and Therapeutic Prospects].","authors":"Chengdao Li, Dongge Peng, Wei Sun","doi":"10.3779/j.issn.1009-3419.2025.101.01","DOIUrl":"10.3779/j.issn.1009-3419.2025.101.01","url":null,"abstract":"<p><p>Lung cancer is one of the most common and lethal malignancies in China. In the context of the tumor microenvironment, neutrophil extracellular traps (NETs) released by neutrophils exert a profound impact on the occurrence and progression of lung cancer. Although the exact mechanisms by which NETs promote tumor growth have not been fully elucidated, existing research has revealed their multiple roles in tumor growth, invasion, metastasis, and cancer-related thrombosis. This article will review the molecular biology mechanisms and research progress of NETs in lung cancer based on recent studies.\u2029.</p>","PeriodicalId":39317,"journal":{"name":"中国肺癌杂志","volume":"28 1","pages":"63-68"},"PeriodicalIF":0.0,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11848645/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143484157","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}
中国肺癌杂志Pub Date : 2025-01-20DOI: 10.3779/j.issn.1009-3419.2025.106.02
Liangyuan Chen, Yiqing Xie, Chong Li
{"title":"[Intestinal Flora Dysregulation and Lung Cancer: \u2029Mechanism Analysis and Clinical Application].","authors":"Liangyuan Chen, Yiqing Xie, Chong Li","doi":"10.3779/j.issn.1009-3419.2025.106.02","DOIUrl":"10.3779/j.issn.1009-3419.2025.106.02","url":null,"abstract":"<p><p>Lung cancer is the deadliest form of cancer globally, with millions of new cases diagnosed each year. Although rapid advancements in surgical techniques, targeted therapies, and immunotherapy have significantly improved patient outcomes, the overall 5-year survival rate remains disappointingly low. Recent studies have highlighted the vital role of gut microbiota in maintaining host health and its close association with the onset and progression of lung cancer through various mechanisms. This article provides a systematic analysis of the role of gut microbiota in lung cancer, focusing on its immunomodulatory and metabolic functions, as well as its potential applications in treatment, while also exploring its prospects for clinical use.\u2029.</p>","PeriodicalId":39317,"journal":{"name":"中国肺癌杂志","volume":"28 1","pages":"69-74"},"PeriodicalIF":0.0,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11848647/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143484162","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":"[Exploration and Challenge of Whole Course Follow-up Management Model \u2029for Small Cell Lung Cancer].","authors":"Chengming Huang, Yongzhao Zhou, Jing Xu, Wenting Lu, Li Tu, Yalun Li, Panwen Tian","doi":"10.3779/j.issn.1009-3419.2025.106.01","DOIUrl":"10.3779/j.issn.1009-3419.2025.106.01","url":null,"abstract":"<p><p>Small cell lung cancer (SCLC) is a highly malignant disease that has garnered significant attention in terms of treatment modalities and course management. Gaining an understanding of the clinical characteristics of SCLC, acquiring proficiency in screening, diagnosis, and treatment methods for this condition, as well as promptly addressing any adverse reactions to treatment are essential foundations for developing a scientific and rational pathological management plan for SCLC. By utilizing an intelligent whole course follow-up management platform, dynamic follow-up, timely warnings, and early interventions can enable high-quality whole life cycle management. This article aims to review the current treatment landscape of SCLC while exploring the challenges associated with implementing a comprehensive process-oriented management approach. The goal is to provide valuable insights for better managing SCLC patients and ultimately improving their quality of life and prognosis.\u2029.</p>","PeriodicalId":39317,"journal":{"name":"中国肺癌杂志","volume":"28 1","pages":"47-54"},"PeriodicalIF":0.0,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11848691/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143484159","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}
中国肺癌杂志Pub Date : 2025-01-20DOI: 10.3779/j.issn.1009-3419.2025.102.02
Sen Han, Lan Mi, Jian Fang, Xu Ma
{"title":"[Real-world Study of Icotinib in EGFR Mutant Non-small Cell Lung Cancer \u2029Based on the Therapeutic Drug Monitoring].","authors":"Sen Han, Lan Mi, Jian Fang, Xu Ma","doi":"10.3779/j.issn.1009-3419.2025.102.02","DOIUrl":"10.3779/j.issn.1009-3419.2025.102.02","url":null,"abstract":"<p><strong>Background: </strong>In the real world, the plasma drug concentration range of Icotinib treated with epidermal growth factor receptor (EGFR) gene mutant non-small cell lung cancer (NSCLC) is not yet clear, and there may be a correlation between drug concentration and its efficacy, as well as adverse reactions. This study conducted therapeutic drug monitoring (TDM) of Icotinib. The aim of this study was to analyze the drug exposure of Icotinib in targeted therapy for NSCLC, and to investigate the relationship between Icotinib drug concentration and its efficacy and safety.</p><p><strong>Methods: </strong>Prospective blood samples were collected from NSCLC patients with EGFR-sensitive mutations who received treatment with Icotinib in Peking University Cancer Hospital from April 2022 to July 2024. The drug trough concentration of Icotinib in plasma was detected, and the correlation between drug concentration and efficacy, as well as the toxic side effects, were further analyzed based on the patient's clinical medical records.</p><p><strong>Results: </strong>22 patients who were treated with Icotinib underwent TDM, but one of them did not acquire the data due to prolonged discontinuation. The remaining 21 patients, each with 1-7 blood draws, obtained a total of 32 plasma drug concentration data. The drug concentration of icotinib is a range of 126.9-2317.1 ng/mL. Among the 21 patients, 18 cases were female (85.7%), and 3 cases were male (14.3%), with an age range of 44-85 years old. The pathological types are all lung adenocarcinoma. Except for 5 patients receiving postoperative adjuvant therapy, 16 patients had assessable tumors. The objective response rate was 43.8% (7/16), and the disease control rate reached 100.0% (16/16). The median value of drug concentration is 805.5 ng/mL among those 21 patients. Compared with the patients who achieved stable disease, the median value of drug concentrations of Icotinib in patients who achieved partial response were 497.2 and 1195.5 ng/mL, respectively (P=0.017). The median value of drug concentrations for patients who did not experience adverse reactions during treatment and those who experienced adverse reactions were 997.0 and 828.6 ng/mL, respectively (P=0.538).</p><p><strong>Conclusions: </strong>Icotinib demonstrates good therapeutic effect and tolerable toxicity on the EGFR gene mutant NSCLC. There is a certain negative correlation between the plasma drug concentration of Icotinib and its efficacy, while there seems no significant correlation with safety.</p>","PeriodicalId":39317,"journal":{"name":"中国肺癌杂志","volume":"28 1","pages":"33-39"},"PeriodicalIF":0.0,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11848650/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143484163","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 Case Report of Lung Adenocarcinoma with EGFR G719A Mutation \u2029and LMNA-NTRK1 Fusion].","authors":"Shiqi Song, Yaxian Yang, Weiquan Luo, Yueya Liang, Qi Li, Tongxu Zhuo, Weibin Xiong, Jian Huang","doi":"10.3779/j.issn.1009-3419.2025.106.03","DOIUrl":"10.3779/j.issn.1009-3419.2025.106.03","url":null,"abstract":"<p><p>Fusion variations of neurotrophic receptor tyrosine kinase (NTRK) are oncogenic drivers in various solid tumors such as breast cancer, salivary gland carcinoma, infant fibrosarcoma, etc. Gene rearrangements involving NTRK1/2/3 lead to constitutive activation of the tropomyosin receptor kinase (TRK) domain, and the expressed fusion proteins drive tumor growth and survival. NTRK fusions are estimated to occur at a frequency of approximately 0.1% to 1% in non-small cell lung cancer (NSCLC). Epidermal growth factor receptor (EGFR) mutations are prevalent in NSCLC, but the frequency of EGFR G719A mutation is relatively low (about 2%), and EGFR mutations are typically mutually exclusive with NTRK fusion variants. The study presented the first documented case of lung adenocarcinoma harboring both EGFR G719A mutation and LMNA-NTRK1 fusion. A review of the literature was conducted to elucidate the role of NTRK fusion mutations in NSCLC and their relationship with EGFR mutations, aiming to enhance the understanding of NTRK fusion mutations in NSCLC.\u2029.</p>","PeriodicalId":39317,"journal":{"name":"中国肺癌杂志","volume":"28 1","pages":"75-80"},"PeriodicalIF":0.0,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11848618/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143484387","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":"[Research Progress of Tumor-associated Neutrophils \u2029in the Occurrence and Development of Lung Cancer].","authors":"Xiaoyan Li, Jianjun Zhou, Chaoting Zhao, Yudi Zhang","doi":"10.3779/j.issn.1009-3419.2025.101.02","DOIUrl":"10.3779/j.issn.1009-3419.2025.101.02","url":null,"abstract":"<p><p>Lung cancer is the malignant tumor with the highest mortality rate worldwide. The tumor microenvironment (TME) is a key factor in the progression of lung cancer, composed of tumor cells, signaling molecules, fibroblasts, immune cells, etc. Among them, tumor associated neutrophil (TAN), as an important component of immune cells in the TME, plays multiple roles in tumor cell proliferation, invasion, angiogenesis, and metastasis due to its aberrant function, and is closely associated with poor prognosis. However, there are limited researches on the mechanism of TAN in lung cancer. This review aims to provide more scientific basis for studying the therapeutic targets of lung cancer and developing new drugs by elucidating the different subtypes of TAN and their mechanisms of action in the occurrence and development of lung cancer.\u2029.</p>","PeriodicalId":39317,"journal":{"name":"中国肺癌杂志","volume":"28 1","pages":"55-62"},"PeriodicalIF":0.0,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11848648/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143484165","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}
中国肺癌杂志Pub Date : 2024-12-20DOI: 10.3779/j.issn.1009-3419.2024.106.33
Sihan Tan, Weimin Li, Panwen Tian
{"title":"[Predictive Value of Prognostic Nutritional Index in Prognosis and \u2029Spontaneous Pleurodesis of Patients with Advanced Non-small Cell Lung Cancer \u2029and Malignant Pleural Effusion].","authors":"Sihan Tan, Weimin Li, Panwen Tian","doi":"10.3779/j.issn.1009-3419.2024.106.33","DOIUrl":"10.3779/j.issn.1009-3419.2024.106.33","url":null,"abstract":"<p><strong>Background: </strong>A prognostic nutritional index (PNI) developed by nutritional status and inflammation are closely associated with poor prognosis in malignant tumors. However, the predictive impact of PNI in patients with malignant pleural effusion (MPE) remains inconclusive. The study aimed to determine the predictive value of PNI in prognosis and spontaneous pleurodesis among patients with MPE.</p><p><strong>Methods: </strong>The patients diagnosed with advanced non-small cell lung cancer (NSCLC) with MPE in West China Hospital between January 2015 and December 2022 were reviewed and allocated randomly to development set(60%) and validation set(40%). After collecting clinical data, peripheral blood inflammation indices and calculating systemic inflammation indices, the effects of PNI on prognosis and spontaneous pleurodesis have been evaluated by Cox proportional hazards models, Kaplan-Meier method and Nelson-Aalen cumulative risk curve.</p><p><strong>Results: </strong>In total, 261 patients diagnosed NSCLC with MPE were selected (development set: n=157; validation set: n=104), of whom 58.2% were aged <65 years, 53.6% were male and 95.8% were diagnosed with adenocarcinoma. The dichotomous cut-off value for PNI was 44.1, respectively. Compared with lower PNI (PNI<44.1) cases, patients with higher PNI (PNI≥44.1) showed significantly longer overall survival (36.5 vs 24.3 mon, P=0.02) and higher incidence of spontaneous pleurodesis (P=0.009). According to the multivariate Cox analysis, higher PNI was associated with good prognosis and successful spontaneous pleurodesis (P<0.05). According to the results of Cox regression analysis, the PNI-prognosis and PNI-spontaneous pleurodesis models are determined, the receiver operating characteristic (ROC) curves are drawn, and the area under the curves (AUC) value of development set are 0.694 (95%CI: 0.620-0.776) and 0.673 (95%CI: 0.590-0.737).</p><p><strong>Conclusions: </strong>PNI is a reliable biomarker of prognosis and spontaneous pleurodesis in patients with MPE. Attention to the patient's nutritional status and inflammation may improve the prognosis and efficacy of pleural effusion.</p>","PeriodicalId":39317,"journal":{"name":"中国肺癌杂志","volume":"27 12","pages":"931-939"},"PeriodicalIF":0.0,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11843482/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143442372","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}
中国肺癌杂志Pub Date : 2024-12-20DOI: 10.3779/j.issn.1009-3419.2024.102.37
Xinyi Wang, Ning Mu, Mei Liu, Yue Xu, Shengnan Wu, Huan Lv, Chunhua Ma
{"title":"[Crizotinib Treatment for Lorlatinib-resistant MET-amplified EML4-ALK-fusion Positive Advanced Lung Adenocarcinoma: A Case Report].","authors":"Xinyi Wang, Ning Mu, Mei Liu, Yue Xu, Shengnan Wu, Huan Lv, Chunhua Ma","doi":"10.3779/j.issn.1009-3419.2024.102.37","DOIUrl":"10.3779/j.issn.1009-3419.2024.102.37","url":null,"abstract":"<p><p>Lung cancer is a major cause of cancer-related mortality worldwide. Among patients with non-small cell lung cancer (NSCLC), approximately 3%-7% harbor anaplastic lymphoma kinase (ALK) gene fusions. In recent years, multiple tyrosine kinase inhibitors (TKIs) have significantly improved the survival of patients with metastatic ALK-positive NSCLC. However, disease progression due to resistance remains a challenge. This article retrospectively analyzes a case of advanced lung adenocarcinoma with the echinoderm microtubule associated protein like 4 (EML4)-ALK fusion variant 3 (V3). The patient developed resistance to Lorlatinib treatment accompanied by mesenchymal-epithelial transition factor (MET) amplification. Effective tumor control was achieved with the combined use of Crizotinib and Lorlatinib, providing a valuable reference for further exploration of treatment strategies following resistance to ALK-TKIs in clinical practice.\u2029.</p>","PeriodicalId":39317,"journal":{"name":"中国肺癌杂志","volume":"27 12","pages":"956-960"},"PeriodicalIF":0.0,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11839500/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143442354","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}
中国肺癌杂志Pub Date : 2024-12-20DOI: 10.3779/j.issn.1009-3419.2024.106.31
Shaowei Zhang
{"title":"[Research Progress of Pulmonary Extranodal Marginal Zone Lymphoma].","authors":"Shaowei Zhang","doi":"10.3779/j.issn.1009-3419.2024.106.31","DOIUrl":"10.3779/j.issn.1009-3419.2024.106.31","url":null,"abstract":"<p><p>Mucosa-associated lymphoid tissue (MALT) lymphoma is the most common primary pulmonary lymphoma, which is an indolent B-cell lymphoma thought to originate from marginal zone B cells. Its pathophysiology is closely related to chronic antigenic stimulation, regardless of whether the antigens are auto-antigens or of microbial origin. Due to its nonspecific clinical presentation and low prevalence, pulmonary MALT lymphoma is often misdiagnosed. The disease is slow-growing, and different treatments have shown good efficacy, but its optimal treatment is somewhat controversial. This paper reviews the epidemiology, pathogenesis, clinical manifestations, computed tomography (CT) features, pathological diagnosis, treatment and prognosis of pulmonary MALT lymphoma, providing reference for clinicians to further understanding of the disease.\u2029.</p>","PeriodicalId":39317,"journal":{"name":"中国肺癌杂志","volume":"27 12","pages":"947-955"},"PeriodicalIF":0.0,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11839501/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143442394","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}