1.Application and Challenges of EEG Signals in Fatigue Driving Detection
Shao-Jie ZONG ; Fang DONG ; Yong-Xin CHENG ; Da-Hua YU ; Kai YUAN ; Juan WANG ; Yu-Xin MA ; Fei ZHANG
Progress in Biochemistry and Biophysics 2024;51(7):1645-1669
People frequently struggle to juggle their work, family, and social life in today’s fast-paced environment, which can leave them exhausted and worn out. The development of technologies for detecting fatigue while driving is an important field of research since driving when fatigued poses concerns to road safety. In order to throw light on the most recent advancements in this field of research, this paper provides an extensive review of fatigue driving detection approaches based on electroencephalography (EEG) data. The process of fatigue driving detection based on EEG signals encompasses signal acquisition, preprocessing, feature extraction, and classification. Each step plays a crucial role in accurately identifying driver fatigue. In this review, we delve into the signal acquisition techniques, including the use of portable EEG devices worn on the scalp that capture brain signals in real-time. Preprocessing techniques, such as artifact removal, filtering, and segmentation, are explored to ensure that the extracted EEG signals are of high quality and suitable for subsequent analysis. A crucial stage in the fatigue driving detection process is feature extraction, which entails taking pertinent data out of the EEG signals and using it to distinguish between tired and non-fatigued states. We give a thorough rundown of several feature extraction techniques, such as topology features, frequency-domain analysis, and time-domain analysis. Techniques for frequency-domain analysis, such wavelet transform and power spectral density, allow the identification of particular frequency bands linked to weariness. Temporal patterns in the EEG signals are captured by time-domain features such autoregressive modeling and statistical moments. Furthermore, topological characteristics like brain area connection and synchronization provide light on how the brain’s functional network alters with weariness. Furthermore, the review includes an analysis of different classifiers used in fatigue driving detection, such as support vector machine (SVM), artificial neural network (ANN), and Bayesian classifier. We discuss the advantages and limitations of each classifier, along with their applications in EEG-based fatigue driving detection. Evaluation metrics and performance assessment are crucial aspects of any detection system. We discuss the commonly used evaluation criteria, including accuracy, sensitivity, specificity, and receiver operating characteristic (ROC) curves. Comparative analyses of existing models are conducted, highlighting their strengths and weaknesses. Additionally, we emphasize the need for a standardized data marking protocol and an increased number of test subjects to enhance the robustness and generalizability of fatigue driving detection models. The review also discusses the challenges and potential solutions in EEG-based fatigue driving detection. These challenges include variability in EEG signals across individuals, environmental factors, and the influence of different driving scenarios. To address these challenges, we propose solutions such as personalized models, multi-modal data fusion, and real-time implementation strategies. In conclusion, this comprehensive review provides an extensive overview of the current state of fatigue driving detection based on EEG signals. It covers various aspects, including signal acquisition, preprocessing, feature extraction, classification, performance evaluation, and challenges. The review aims to serve as a valuable resource for researchers, engineers, and practitioners in the field of driving safety, facilitating further advancements in fatigue detection technologies and ultimately enhancing road safety.
2.Mechanism of ginsenoside Rg1 inhibiting the proliferation and metastasis of tongue squamous cell carcinoma
Xue LI ; Sha-Fei ZHAI ; Xin-Yang MA ; Dan-Yang WANG ; Juan CHAI ; Fang ZHOU ; Jia ZHANG
The Chinese Journal of Clinical Pharmacology 2024;40(13):1888-1892
Objective To investigate the inhibitory effect of Ginsenosides Rg1(GS-Rg1)on the proliferation and metastasis of tongue squamous cell carcinoma(TSCC),and its related mechanisms of action.Methods TSCC cells were treated with GS-Rg1 at concentrations of 1.25,2.5,5.0 and 10.0 μmol·L-1 for 48 hours.The proliferation ability of cells at different concentrations was measured by cell counting kit-8(CCK-8)experiment,and the IC5ovalue of GS-Rg1 at CAL-27 for 48 hours was calculated.TSCC cells CAL-27 were divided into control group and GS-Rg1 group.The control group and GS-Rg1 group were treated with 0.9%NaCl and IC50concentration of GS-Rg1 for 48 hours,respectively.The cell cycle distribution of each group was detected by flow cytometry,and the cell metastasis ability of each group was detected by Transwell experiment.Construct TOP/FOP Flash plasmid,transfect control group and GS-Rg1 group,and detect the effect of GS-Rg1 effect on wnt/β-catenin signaling pathway activity in TSCC cell CAL-27 using luciferase assay.Using wnt/β-catenin pathway inhibitor XAV939 treated GS-Rg1 group cells(XAV939+GS-Rg1 group),and wnt/β-catenin pathway activator HLY78 was used to treat GS-Rg1 group cells(HLY78+GS-Rg1 group)and detect changes of wnt/β-catenin signaling pathway activity,the cell proliferation ability,cell cycle distribution,and metastasis ability in XAV939+GS-Rg1 group,HLY78+GS-Rg1 group and GS-Rg1 group.The expression of wnt/β-catenin signaling pathway related proteins β-catenin,and its downstream cell cycle related proteins cellular myelocytomatosis oncogene(cMYC),Cyclin dependent kinase 4(CDK4),andcyclinD1,as well as metastasis related proteins E-cadherin,N-cadherin and matrix metalloproteinase 2(MMP-2)were detected by Western blotting in each group of cells.Results GS-Rg1 significantly inhibited the proliferation ability of TSCC cells CAL-27(P<0.05),and the IC50value of GS-Rg1 on CAL-27 was(5.46±1.58)μmol·L-1.The ratio of GO/G1 phase cells in the control group and GS-Rg1 group were(60.65±2.16)%and(71.20±2.38)%,respectively;the number of cell transmembrane penetration were 87.33±7.51 and 50.67±3.21,respectively;the luciferase activity were 1.00±0.02 and 0.35±0.06,respectively.Compared with the control group,the GS-Rg1 group showed cell cycle arrest in GO/G1 phase,decreased cell metastasis ability,and the activity of wnt/β-catenin signaling pathway decreased(P<0.05,P<0.01).Compared with the GS-Rg1 group,the activity of the wnt/β-catenin signaling pathway was decreased,cell proliferation ability and metastasis ability was decreased(P<0.05),while the number of GO/G1 phase cells was increased(P<0.05),the expression of β-catenin,cMYC,CDK4,cyclinD1,E-cadherin and MMP-2 proteins were decreased(P<0.05),while the expression of N-cadherin protein increased in XAV939+GS-Rg1 group cells.However,the result were opposite in the HLY78+GS-Rg1 group of cells.Conclusion GS-Rg1 downregulates wnt/β-catenin signaling pathway inhibits the proliferation and metastasis ability of TSCC cells.
3.Effects of long-term high-altitude exposure on the composition of gut microflora in different intestinal segments of rats
Zhi-Fang ZHAO ; Xu-Fei ZHANG ; Ning SUN ; Hao LI ; Hai-Lin MA
Modern Interventional Diagnosis and Treatment in Gastroenterology 2024;29(5):552-559
Objective To investigate the effects of long-term high altitude exposure on the composition and structure of the gut microbiota in rats in different intestinal segments,and to explore the key affected intestinal segments initially.Methods Six-week-old C57BL/6 mice were randomly divided into a control group(Control group)and a high altitude exposed group(HA group).The HA group was exposed to a low-pressure oxygen chamber at a simulated altitude of 3500-4000 m for 20 weeks,after which the microbiomes of both groups were analysed using high-throughput 16s rRNA sequencing and core changes in the duodenal,jejunal,ileal and colonic microflora communities were determined.Results The microbial abundance of the colon was significantly reduced in the hypoxic environment of high altitude,the microbial abundance and diversity of the foregut did not change significantly,and the AVD value of the colon was higher than that of the other intestinal segments,and it tended to be more stable after prolonged exposure to treatment in high altitude;At the Bray-curtis distance,the Microbial structure of the ileum and colon was significantly different between the Control and HA groups,whereas the duodenum and jejunum showed no significant changes;The predominant phylum in all intestinal segments was Firmicutes,but the dominant phyla varied in different intestinal segments and treatment groups,with Lactobacillus spp.contributing highly to the changes in the gut microflora;the complexity of the phylogenetic network of the ileum was higher than that of the other intestinal segments,whereas the colon had the fewest phylogenetic interactions;the jejunum and the ileum consisted mainly of abundant taxa,whereas the colon had a significantly smaller proportion of abundant taxa,mainly Conditionally rare taxa.The duodenum differed in taxa composition between the Control and HA groups.Conclusion High-altitude hypoxia can affect the microecological environment of the ileum and colon by remodelling the composition and structure of the intestinal microflora,especially in the ileum compared with the other three intestinal segments.In addition,the ileum is characterised by both lower complexity of the microflora structure and the prominent role of key genera in the high altitude hypoxia study,in which the changes of Lactobacillus spp.are worthy of more in-depth study at a later stage.Therefore,the ileal microbiota of rats may have a higher research value compared with other intestinal segments.
4.Contrast-Enhanced Ultrasound in the Differential Diagnosis of Gallbladder Polypoid Lesions:A Multicenter Study
Ligang JIA ; Xiang FEI ; Xiang JING ; Mingxing LI ; Fang NIE ; Dong JIANG ; Shaoshan TANG ; Wei ZHANG ; Hong DING ; Tao SONG ; Qi ZHOU ; Bei ZHANG ; Zhixia SUN ; Xiaojuan MA ; Nianan HE ; Fang LI ; Yingqiao ZHU ; Wen CHENG ; Yukun LUO
Chinese Journal of Medical Imaging 2024;32(11):1147-1154
Purpose To explore the value of contrast-enhanced ultrasound(CEUS)in the differential diagnosis of gallbladder polypoid lesions(GPLs)(diameter≥10 mm).Materials and Methods A prospective enrollment of 229 patients with GPLs who underwent cholecystectomy in 17 hospitals from December 1 2021 to June 30 2024 was conducted to analyze the relationship between general data,conventional ultrasound,CEUS characteristics and the nature of GPLs.Multivariate Logistic regression was employed to identify independent risk factors for neoplastic polyps,the differential diagnostic value of different indicators was compared.Results Among 229 patients with GPLs,there were 108 cases of cholesterol polyps,102 cases of adenoma and 19 cases of gallbladder cancer.Age(Z=-4.476,P<0.001),polyp number(χ2=15.561,P<0.001),diameter(Z=-8.149,P<0.001),echogenicity(χ2=9.241,P=0.010),vascularity(χ2=23.107,P<0.001),enhancement intensity(χ2=47.610,P<0.001),enhancement pattern(χ2=6.468,P=0.011),vascular type(χ2=84.470,P<0.001),integrity of gallbladder wall(χ2=7.662,P=0.006)and stalk width(Z=-9.831,P<0.001)between cholesterol polyps and neoplastic polyps were statistically significant.Age,location,diameter,echogenicity,enhancement pattern,vascular type and stalk width between adenoma and gallbladder cancer were statistically significant(Z=-4.333,-3.902,-5.042,all P<0.05).Multivariate Logistic regression analysis showed that hyper-enhancement,branched vascular type and stalk width were independent risk factors for neoplastic polyps(OR=4.563,5.770,3.075,all P<0.001).The combination of independent risk factors was better than single factor and diameter in the differential diagnosis of cholesterol polyps and neoplastic polyps(all P<0.01).Conclusion CEUS can effectively identify the nature of GPLs and provide a valuable imaging reference for the selection of treatment methods.
5.Effect of transcutaneous auricular vagus nerve stimulation on functional connectivity in the related brain regions of patients with depression based on the resting-state fMRI.
Yue MA ; Chun-Lei GUO ; Ji-Fei SUN ; Shan-Shan GAO ; Yi LUO ; Qing-Yan CHEN ; Yang HONG ; Lei ZHANG ; Jiu-Dong CAO ; Xue XIAO ; Pei-Jing RONG ; Ji-Liang FANG
Chinese Acupuncture & Moxibustion 2023;43(4):367-373
OBJECTIVE:
To explore the brain effect mechanism and the correlation between brain functional imaging and cognitive function in treatment of depressive disorder (DD) with transcutaneous auricular vagus nerve stimulation (taVNS) based on the resting-state functional magenetic reasonance imaging (rs-fMRI).
METHODS:
Thirty-two DD patients were included in a depression group and 32 subjects of healthy condition were enrolled in a normal group. In the depression group, the taVNS was applied to bilateral Xin (CO15) and Shen (CO10), at disperse-dense wave, 4 Hz/20 Hz in frequency and current intensity ≤20 mA depending on patient's tolerance, 30 min each time, twice daily. The duration of treatment consisted of 8 weeks. The patients of two groups were undertaken rs-fMRI scanning. The scores of Hamilton depression scale (HAMD), Hamilton anxiety scale (HAMA) and Wisconsin card sorting test (WCST) were observed in the normal group at baseline and the depression group before and after treatment separately. The differential brain regions were observed before and after treatment in the two groups and the value of degree centrality (DC) of fMRI was obtained. Their correlation was analyzed in terms of HAMD, HAMA and WCST scores.
RESULTS:
The scores of HAMD and HAMA in the depression group were all higher than those in the normal group (P<0.05). After treatment, the scores of HAMD and HAMA were lower than those before treatment in the depression group; the scores of total responses, response errors and perseverative errors of WCST were all lower than those before treatment (P<0.05). The brain regions with significant differences included the left inferior temporal gyrus, the left cerebellar peduncles region 1, the left insula, the right putamen, the bilateral supplementary motor area and the right middle frontal gyrus. After treatment, the value of DC in left supplementary motor area was negatively correlated to HAMD and HAMA scores respectively (r=-0.324, P=0.012; r=-0.310, P=0.015); the value of DC in left cerebellar peduncles region 1 was negatively correlated to the total responses of WCST (r=-0.322, P=0.013), and the left insula was positively correlated to the total responses of WCST (r=0.271, P=0.036).
CONCLUSION
The taVNS can modulate the intensity of the functional activities of some brain regions so as to relieve depressive symptoms and improve cognitive function.
Humans
;
Depression/therapy*
;
Magnetic Resonance Imaging/methods*
;
Vagus Nerve Stimulation/methods*
;
Brain/diagnostic imaging*
;
Transcutaneous Electric Nerve Stimulation/methods*
;
Vagus Nerve
6.The Pathogenic Characteristics of the Initial Three Mpox Cases in Hunan Province, China.
Rong Jiao LIU ; Xing Yu XIANG ; Zi Xiang HE ; Qian Lai SUN ; Fu Qiang LIU ; Shuai Feng ZHOU ; Yi Wei HUANG ; Fang Cai LI ; Chao Yang HUANG ; Juan WANG ; Fang Ling HE ; Xin Hua OU ; Shi Kang LI ; Yu Ying LU ; Fan ZHANG ; Liang CAI ; Hai Ling MA ; Zhi Fei ZHAN
Biomedical and Environmental Sciences 2023;36(12):1167-1170
7.The trend and challenge of DNA methylation clinical application in cervical cancer
Yuli LIU ; Xiaobing XIE ; Fei CHEN ; Weizhen LOU ; Ma MI ; Fang LI
Chinese Journal of Laboratory Medicine 2023;46(4):341-346
According to the current cervical cancer screening strategy and the World Health Orgnization cervical cancer diagnosis/screening guidelines, gene methylation will be included in the new guidelines in the future. However, the value of detecting DNA methylation at specific sites in the clinical specimens during the cervical cancer treatment remains to be discussed. This article summarised the role of DNA methylation in the development of cervical cancer and discusses the potential clinical application of methylation detection in the management of high-risk human papillomavirus (hrHPV) positive female patients. It is believed that methylation test can not only be used for the preliminary classification of hrHPV positive female patients, but also for the secondary triage of female patients with slight cytological abnormalities to determine the high risk of cervical intraepithelial neoplasia 3(CIN3) or cancer. It can also be used for the withdrawal test of women in the screening program to support the management of CIN.
8.Clinical analysis of the usefulness of letermovir for prevention of cytomegalovirus infection after haploidentical hematopoietic stem cell transplantation.
Rui MA ; Yun HE ; Hui Fang WANG ; Lu BAI ; Wei HAN ; Yi Fei CHENG ; Kai Yan LIU ; Lan Ping XU ; Xiao Hui ZHANG ; Yu WANG ; Yuan Yuan ZHANG ; Feng Rong WANG ; Xiao Dong MO ; Chen Hua YAN ; Xiao Jun HUANG ; Yu Qian SUN
Chinese Journal of Internal Medicine 2023;62(7):826-832
Objective: To analyze the efficacy and safety of letermovir in primary prophylaxis of cytomegalovirus (CMV) reactivation in patients receiving haploidentical hematopoietic stem cell transplantation. Methods: This retrospective, cohort study was conducted using data of patients who underwent haploidentical transplantation at Peking University Institute of Hematology and received letermovir for primary prophylaxis between May 1, 2022 and August 30, 2022. The inclusion criteria of the letermovir group were as follows: letermovir initiation within 30 days after transplantation and continuation for≥90 days after transplantation. Patients who underwent haploidentical transplantation within the same time period but did not receive letermovir prophylaxis were selected in a 1∶4 ratio as controls. The main outcomes were the incidence of CMV infection and CMV disease after transplantation as well as the possible effects of letermovir on acute graft versus host disease (aGVHD), non-relapse mortality (NRM), and bone marrow suppression. Categorical variables were analyzed by chi-square test, and continuous variables were analyzed by Mann-Whitney U test. The Kaplan-Meier method was used for evaluating incidence differences. Results: Seventeen patients were included in the letermovir prophylaxis group. The median patient age in the letermovir group was significantly greater than that in the control group (43 yr vs. 15 yr; Z=-4.28, P<0.001). The two groups showed no significant difference in sex distribution and primary diseases, etc. (all P>0.05). The proportion of CMV-seronegative donors was significantly higher in the letermovir prophylaxis group in comparison with the control group (8/17 vs. 0/68, χ2=35.32, P<0.001). Three out of the 17 patients in the letermovir group experienced CMV reactivation, which was significantly lower than the incidence of CMV reactivation in the control group (3/17 vs. 40/68, χ2=9.23, P=0.002), and no CMV disease development observed in the letermovir group. Letermovir showed no significant effects on platelet engraftment (P=0.105), aGVHD (P=0.348), and 100-day NRM (P=0.474). Conclusions: Preliminary data suggest that letermovir may effectively reduce the incidence of CMV infection after haploidentical transplantation without influencing aGVHD, NRM, and bone marrow suppression. Prospective randomized controlled studies are required to further verify these findings.
Humans
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Cytomegalovirus
;
Retrospective Studies
;
Cohort Studies
;
Prospective Studies
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Cytomegalovirus Infections/prevention & control*
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Hematopoietic Stem Cell Transplantation/adverse effects*
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Graft vs Host Disease/prevention & control*
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Recurrence
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Antiviral Agents/therapeutic use*
9.Electroacupuncture in Treatment of Acute Gastrointestinal Injury in Patients with Severe Traumatic Brain Injury: A Multicenter Randomized Controlled Trial.
Xi XING ; Rong-Lin JIANG ; Shu LEI ; Yi-Hui ZHI ; Mei-Fei ZHU ; Li-Quan HUANG ; Ma-Hong HU ; Jun LU ; Kun FANG ; Qiu-Yan WANG
Chinese journal of integrative medicine 2023;29(8):721-729
OBJECTIVE:
To evaluate whether electroacupuncture (EA) would improve gastrointestinal function and clinical prognosis in patients with severe traumatic brain injury (TBI) complicocted by acute gastrointestinal injury (AGI).
METHODS:
This multicenter, single-blind trial included patients with TBI and AGI admitted to 5 Chinese hospitals from September 2018 to December 2019. A total of 500 patients were randomized to the control or acupuncture groups using a random number table, 250 cases in each group. Patients in the control group received conventional treatment, including mannitol, nutritional support, epilepsy and infection prevention, and maintenance of water, electrolytes, and acid-base balance. While patients in the acupuncture group received EA intervention at bilateral Zusanli (ST 36), Shangjuxu (ST 37), Xiajuxu (ST 39), Tianshu (ST 25), and Zhongwan (RN 12) acupoints in addition to the conventional treatment, 30 min per time, twice daily, for 7 d. The primary endpoint was 28-d mortality. The secondary endpoints were serum levels of D-lactic acid (D-lac), diamine oxidase (DAO), lipopolysaccharide (LPS), motilin (MTL) and gastrin (GAS), intra-abdominal pressure (IAP), bowel sounds, abdominal circumference, AGI grade, scores of gastrointestinal failure (GIF), Glasgow Coma Scale (GCS), Acute Physiology and Chronic Health Evaluation (APACHE II), Sequential Organ Failure Assessment (SOFA), and Multiple Organ Dysfunction Syndrome (MODS), mechanical ventilation time, intense care unit (ICU) stay, and the incidence of hospital-acquired pneumonia.
RESULTS:
The 28-d mortality in the acupuncture group was lower than that in the control group (22.80% vs. 33.20%, P<0.05). Compared with the control group, the acupuncture group at 7 d showed lower GIF, APACHE II, SOFA, MODS scores, D-lac, DAO, LPS, IAP, and abdominal circumference and higher GCS score, MTL, GAS, and bowel sound frequency (all P<0.05). In addition, the above indices showed simillar changes at 7 d compared with days 1 and 3 (all P<0.05) in the EA group.
CONCLUSION
Early EA can improve gastrointestinal function and clinical prognosis in patients with severe TBI complicated by AGI. (Registration No. ChiCTR2000032276).
Humans
;
Electroacupuncture
;
Lipopolysaccharides
;
Single-Blind Method
;
Acupuncture Therapy
;
Brain Injuries, Traumatic/therapy*
10.Preliminary study on differentially expressed proteins in a mouse model of secondary alveolar echinococcosis based on data independent acquisition proteomics
Xiao-mei SI ; Jun-ying MA ; Xue-fei ZHANG ; Hu WANG ; Xi SUN ; Xiao MA ; Wei WANG ; Yu-fang LIU ; Jia LIU ; Shuai GUO ; De-hong HAN ; Shuang HAN
Chinese Journal of Schistosomiasis Control 2022;34(1):52-58
Objective To identify the differentially expressed proteins in different liver tissues in the mouse model of alveolar echinococcosis using high-resolution mass spectrometry with data independent acquisition (DIA), and to identify the key proteins contributing to the pathogenesis of alveolar echinococcosis. Methods Protoscoleces were isolated from Microtus fuscus with alveolar echinococcosis and the experimental model of alveolar echinococcosis was established in female Kunming mice aged 6 to 8 weeks by infection with Echinococcus multilocularis protoscoleces. Mice were divided into the experimental and control groups, and animals in the experimental group was injected with approximately 3 000 protoscoleces, while mice in the control group were injected with the same volume of physiological saline. Mouse liver specimens were sampled from both groups one year post-infection and subjected to pathological examinations. In addition, the lesions (the lesion group) and peri-lesion specimens (the peri-lesion group) were sampled from the liver of mice in the experimental group and the normal liver specimens (the normal group) were sampled from mice in the control group for DIA proteomics analysis, and the differentially expressed proteins were subjected to bioinformatics analysis. Results A total of 1 020 differentially expressed proteins were identified between the lesion group and the normal group, including 671 up-regulated proteins and 349 down-regulated proteins, and 495 differentially expressed proteins were identified between the peri-lesion group and the normal group, including 327 up-regulated proteins and 168 down-regulated proteins. The Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis revealed that these differentially expressed proteins were involved in peroxisome, peroxisome proliferator-activated receptor (PPAR) and fatty acid degradation pathways, and the peroxisome and PPAR signaling pathways were found to correlate with liver injury. Several differentially expressed proteins that may contribute to the pathogenesis of alveolar echinococcosis were identified in these two pathways, including fatty acid binding protein 1 (Fabp1), Acyl-CoA synthetase long chain family member 1 (Acsl1), Acyl-CoA oxidase 1 (Acox1), Enoyl-CoA hydratase and 3-hydroxyacyl CoA dehydrogenase (Ehhadh) and Acetyl-Coenzyme A acyltransferase 1B (Acaa1b), which were down-regulated in mice in the experimental group. Conclusion A large number of differentially expressed proteins are identified in the liver of the mouse model of alveolar echinococcosis, and Fabp1, Acsl1, Acox1, Ehhadh and Acaa1b may contribute to the pathogenesis of alveolar echinococcosis.

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