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Sun H, Yan Z, Sun J, Zhang J, Wang H, Jiang X, Wang M, Zhang X, Xiao Y, Ji X, Tang J, Ren D. Polyhexamethylene guanidine accelerates the macrophage foamy formation mediated pulmonary fibrosis. Ecotoxicol Environ Saf 2024; 272:116084. [PMID: 38350217 DOI: 10.1016/j.ecoenv.2024.116084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 02/04/2024] [Accepted: 02/05/2024] [Indexed: 02/15/2024]
Abstract
Polyhexamethylene guanidine (PHMG) is manufactured and applied extensively due to its superior disinfectant capabilities. However, the inhalatory exposure to PHMG aerosols is increasingly recognized as a potential instigator of pulmonary fibrosis, prompting an urgent call for elucidation of the underlying pathophysiological mechanisms. Within this context, alveolar macrophages play a pivotal role in the primary immune defense in the respiratory tract. Dysregulated lipid metabolism within alveolar macrophages leads to the accumulation of foam cells, a process that is intimately linked with the pathogenesis of pulmonary fibrosis. Therefore, this study examines PHMG's effects on alveolar macrophage foaminess and its underlying mechanisms. We conducted a 3-week inhalation exposure followed by a 3-week recovery period in C57BL/6 J mice using a whole-body exposure system equipped with a disinfection aerosol generator (WESDAG). The presence of lipid-laden alveolar macrophages and downregulation of pulmonary tissue lipid transport proteins ABCA1 and ABCG1 were observed in mice. In cell culture models involving lipid-loaded macrophages, we demonstrated that PHMG promotes foam cell formation by inhibiting lipid efflux in mouse alveolar macrophages. Furthermore, PHMG-induced foam cells were found to promote an increase in the release of TGF-β1, fibronectin deposition, and collagen remodeling. In vivo interventions were subsequently implemented on mice exposed to PHMG aerosols, aiming to restore macrophage lipid efflux function. Remarkably, this intervention demonstrated the potential to retard the progression of pulmonary fibrosis. In conclusion, this study underscores the pivotal role of macrophage foaming in the pathogenesis of PHMG disinfectants-induced pulmonary fibrosis. Moreover, it provides compelling evidence to suggest that the regulation of macrophage efflux function holds promise for mitigating the progression of pulmonary fibrosis, thereby offering novel insights into the mechanisms underlying inhaled PHMG disinfectants-induced pulmonary fibrosis.
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Affiliation(s)
- He Sun
- Department of Respiratory and Critical Care Medicine, the Affiliated Hospital of Qingdao University, Qingdao 266000, China; Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Zhijiao Yan
- Department of Respiratory and Critical Care Medicine, the Affiliated Hospital of Qingdao University, Qingdao 266000, China; Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Jiaxing Sun
- Department of Respiratory and Critical Care Medicine, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Jianzhong Zhang
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Hongmei Wang
- Department of Respiratory and Critical Care Medicine, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Xinmin Jiang
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Mingyue Wang
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Xinglin Zhang
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Yuting Xiao
- Department of Respiratory and Critical Care Medicine, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Xiaoya Ji
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Jinglong Tang
- Department of Respiratory and Critical Care Medicine, the Affiliated Hospital of Qingdao University, Qingdao 266000, China; Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China.
| | - Dunqiang Ren
- Department of Respiratory and Critical Care Medicine, the Affiliated Hospital of Qingdao University, Qingdao 266000, China; Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China.
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Bi H, Ren D, Xiao Y, Zhou Y, Yi B, Han W, Shao Y, Wang J, Zhang C, Wang H. Prognostic implications of neutrophil-to-lymphocyte ratio in patients with extensive-stage small cell lung cancer receiving chemoimmunotherapy: A multicenter, real-world study. Thorac Cancer 2024; 15:559-569. [PMID: 38294282 PMCID: PMC10912525 DOI: 10.1111/1759-7714.15225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 01/07/2024] [Accepted: 01/09/2024] [Indexed: 02/01/2024] Open
Abstract
BACKGROUND Neutrophil-to-lymphocyte ratio (NLR) and platelet-to-lymphocyte ratio (PLR) are closely related to the prognosis of patients with non-small cell lung cancer, but their effect on extensive-stage small cell lung cancer (ES-SCLC) remains uncertain. METHODS This retrospective study was conducted in ES-SCLC patients treated with first-line atezolizumab or durvalumab and platinum-etoposide. Clinical data from three hospitals were analyzed. Significant risk factors for survival were identified using descriptive statistics and Cox regression. Homogeneity was assessed using t-tests or nonparametric tests. Kaplan-Meier analysis revealed an association between high NLR level and median PFS and OS. RESULTS A total of 300 ES-SCLC patients were included in the study. Cox regression analysis revealed that an elevated NLR level after the second treatment cycle (defined as NLRT2) was an independent prognostic factor for survival. Stratifying patients based on median NLRT2 showed significant differences in both PFS (HR: 1.863, 95% CI: 1.62-2.12, p < 0.001) and OS (HR: 2.581, 95% CI: 2.19-3.04, p < 0.001) between NLR ≥ 1.75 and NLR < 1.75 groups. mPFS and mOS were 8.2 versus 6.1 months and 13.7 versus 9.5 months, respectively. NLR was also associated with treatment efficacy and occurrence of irAEs. Further stratification based on NLR and irAEs showed that in the NLR < 1.75 group, patients with irAEs had prolonged mPFS and mOS. In the NLR ≥ 1.75 group, only mPFS showed a significant difference between patients with and without irAEs. CONCLUSION NLRT2 and irAEs can predict the prognosis of ES-SCLC patients with first-line ES-SCLC receiving PD-L1 inhibitors combined with chemotherapy.
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Affiliation(s)
- Huanhuan Bi
- Department of Respiratory and Critical Care Medicinethe Affiliated Hospital of Qingdao UniversityQingdaoChina
- Department of Respiratory and Critical Care MedicineThe Affiliated Qingdao Central Hospital of Medical College of Qingdao UniversityQingdaoChina
| | - Dunqiang Ren
- Department of Respiratory and Critical Care Medicinethe Affiliated Hospital of Qingdao UniversityQingdaoChina
| | - Yuting Xiao
- Department of Respiratory and Critical Care Medicinethe Affiliated Hospital of Qingdao UniversityQingdaoChina
| | - Yinxue Zhou
- Department of Respiratory and Critical Care Medicinethe Affiliated Hospital of Qingdao UniversityQingdaoChina
| | - Bingqian Yi
- Department of Respiratory and Critical Care Medicinethe Affiliated Hospital of Qingdao UniversityQingdaoChina
| | - Weizhong Han
- Department of Respiratory and Critical Care Medicinethe Affiliated Hospital of Qingdao UniversityQingdaoChina
| | - Yanmei Shao
- Department of Respiratory and Critical Care Medicinethe Affiliated Hospital of Qingdao UniversityQingdaoChina
| | - Jingluan Wang
- Department of Respiratory and Critical Care Medicinethe Affiliated Hospital of Qingdao UniversityQingdaoChina
| | - Chunling Zhang
- Department of Respiratory and Critical Care MedicineThe Affiliated Qingdao Central Hospital of Medical College of Qingdao UniversityQingdaoChina
| | - Hongmei Wang
- Department of Respiratory and Critical Care Medicinethe Affiliated Hospital of Qingdao UniversityQingdaoChina
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Li X, Zhang J, Wang M, Du C, Zhang W, Jiang Y, Zhang W, Jiang X, Ren D, Wang H, Zhang X, Zheng Y, Tang J. Pulmonary Surfactant Homeostasis Dysfunction Mediates Multiwalled Carbon Nanotubes Induced Lung Fibrosis via Elevating Surface Tension. ACS Nano 2024; 18:2828-2840. [PMID: 38101421 DOI: 10.1021/acsnano.3c05956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2023]
Abstract
Multiwalled carbon nanotubes (MWCNTs) have been widely used in many disciplines and raised great concerns about their negative health impacts, especially environmental and occupational exposure. MWCNTs have been reported to induce fibrotic responses; however, the underlying mechanisms remain largely veiled. Here, we reported that MWCNTs inhalation induced lung fibrosis together with decreased lung compliance, increased elastance in the mice model, and elevated surface tension in vitro. Specifically, MWCNTs increased surface tension by impairing the function of the pulmonary surfactant. Mechanistically, MWCNTs induced lamellar body (LB) dysfunction through autophagy dysfunction, which then leads to surface tension elevated by pulmonary surfactant dysfunction in the context of lung fibrosis. This is a study to investigate the molecular mechanism of MWCNTs-induced lung fibrosis and focus on surface tension. A direct mechanistic link among impaired LBs, surface tension, and fibrosis has been established. This finding elucidates the detailed molecular mechanisms of lung fibrosis induced by MWCNTs. It also highlights that pulmonary surfactants are expected to be potential therapeutic targets for the prevention and treatment of lung fibrosis induced by MWCNTs.
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Affiliation(s)
- Xin Li
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Jianzhong Zhang
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Mingyue Wang
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Chao Du
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Wenjing Zhang
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Yingying Jiang
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Wanjun Zhang
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Xinmin Jiang
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Dunqiang Ren
- Department of Respiratory Medicine, Affiliated Hospital of Medical College of Qingdao University, Qingdao 266021, China
| | - Hongmei Wang
- Department of Respiratory Medicine, Affiliated Hospital of Medical College of Qingdao University, Qingdao 266021, China
| | - Xinru Zhang
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Yuxin Zheng
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Jinglong Tang
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
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Wang P, Ren D, Guo C, Ding X, Cao Y, Zhao P, Wang Q, Xu W. A rare case of pulmonary artery embolism with choriocarcinoma: A case report and literature review. Oncol Lett 2023; 26:490. [PMID: 37854862 PMCID: PMC10579977 DOI: 10.3892/ol.2023.14077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Accepted: 09/07/2023] [Indexed: 10/20/2023] Open
Abstract
Pulmonary embolism (PE) caused by malignant tumor is not uncommon, but pulmonary artery with choriocarcinoma is rare and difficult to timely diagnose and effectively treat. To the best of our knowledge, there are only 15 cases reported at present in the literature that present variable clinical characteristics and prognosis. In the current study reports a 21-year-old female with a history of chest pain and slight fever for 4 months who was treated as a case of pneumonia. Owing to the recurrence of the symptoms, a contrast-enhanced chest computer tomography scan was performed on the patient, which revealed complete occlusion of the right pulmonary artery. The patient was diagnosed to have pulmonary embolism (PE). However, no abnormalities were observed in D-dimer value, tumor antigen testing or ultrasonography. Positron emission tomography/computed tomography (PET/CT) was performed, which revealed the abnormal hypermetabolic lesion of the right pulmonary artery. Following the laboratory report of a significantly elevated human chorionic gonadotropin β-subunit level combined with characteristic appearance of PET-CT, the diagnosis of primary pulmonary artery with choriocarcinoma was established based on guidelines of the European Society for Medical Oncology and the criteria formulated by the International Federation of Gynecology and Obstetrics. The patient underwent chemotherapy and responded well to the treatment. Although rare, choriocarcinoma should be considered for any fertile women who presents with a massive PE. These findings emphasize the importance of the early diagnosis and treatment of this disease.
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Affiliation(s)
- Pengcheng Wang
- Department of Respiratory and Critical Care Medicine, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
| | - Dunqiang Ren
- Department of Respiratory and Critical Care Medicine, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
| | - Caihong Guo
- Department of Respiratory and Critical Care Medicine, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
| | - Xiaoqian Ding
- Department of Respiratory and Critical Care Medicine, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
| | - Yiwei Cao
- Department of Respiratory and Critical Care Medicine, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
| | - Peige Zhao
- Department of Respiratory and Critical Care Medicine, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
| | - Qiang Wang
- Department of Respiratory and Critical Care Medicine, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
| | - Wenjuan Xu
- Department of Respiratory and Critical Care Medicine, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
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Han L, Guo Y, Ren D, Hui H, Li N, Xie X. A predictive role of C-reactive protein in colorectal cancer risk: an updated meta-analysis from 780,985 participants and 11,289 cancer cases. Int J Colorectal Dis 2023; 38:121. [PMID: 37160817 DOI: 10.1007/s00384-023-04419-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/25/2023] [Indexed: 05/11/2023]
Abstract
PURPOSE This meta-analysis is aimed at understanding the potential role of circulating C-reactive protein (CRP) in the prediction of colorectal cancer (CRC) risk and the potential effect of relevant variables, with specific concern to determine the incorporation of CRP into a CRC risk prediction model. METHODS Relevant articles on the association between circulating CRP and CRC risk were searched from PubMed, Embase, Web of Science, and Cochrane Database of Systematic Reviews through August 2022. Random-effects models were used to estimate the pooled relative risk (RR) for the highest versus lowest CRP categories. Linear and non-linear trend analyses were conducted to explore the dose-response associations between CRP and CRC risk. RESULTS Twenty-three articles including 780,985 participants and 11,289 cancer cases met the selection criteria. The overall result demonstrated a remarkable association between elevated CRP levels and CRC risk (RR, 1.259; 95% CI, 1.060-1.457), but not in dose-response analysis (RR, 1.002 (95% CI, 0.964-1.041) per natural log unit change in CRP). Subgroup analyses indicated a significant difference when grouped by study location, the length of follow-up, and gender composition. No evidence of publication bias was observed. CONCLUSION The predictive role of CRP in CRC incidence is limited to colon cancer and a period of 10 years after the initial discovery of CRP elevation. The result did not support the etiological role of CRP in CRC and the inclusion of CRP into the CRC risk prediction model.
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Affiliation(s)
- Liang Han
- Department of Oncology, Xuzhou Central Hospital , The Xuzhou School of Clinical Medicine of Nanjing Medical University, Clinical School of Xuzhou Medical University, Xuzhou, China
| | - Yongzhong Guo
- Department of Respiratory and Critical Care Medicine, Xuzhou Central Hospital, The Xuzhou School of Clinical Medicine of Nanjing Medical University, Xuzhou Clinical School of Xuzhou Medical University, Xuzhou, China
| | - Dunqiang Ren
- Department of Respiratory and Critical Care Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Hui Hui
- Department of Radiotherapy, Xuzhou Central Hospital, The Xuzhou School of Clinical Medicine of Nanjing Medical University, Xuzhou Clinical School of Xuzhou Medical University, Xuzhou, China
| | - Na Li
- Department of Radiotherapy, Xuzhou Central Hospital, The Xuzhou School of Clinical Medicine of Nanjing Medical University, Xuzhou Clinical School of Xuzhou Medical University, Xuzhou, China
| | - Xiaoxuan Xie
- Department of Radiotherapy, Xuzhou Central Hospital, The Xuzhou School of Clinical Medicine of Nanjing Medical University, Xuzhou Clinical School of Xuzhou Medical University, Xuzhou, China.
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Botros M, Alsaghayer A, Tanabe C, Armas K, Mabry M, Goodarzi A, Yau S, Youssef J, Huang H, Ren D, Suarez E. Extending Cold Ischemic Time Using LUNGguard: A Single Center Experience in Time Shifting. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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Jiang Y, Lu L, Du C, Li Y, Cheng W, Bi H, Li G, Zhuang M, Ren D, Wang H, Ji X. Human airway organoids as 3D in vitro models for a toxicity assessment of emerging inhaled pollutants: Tire wear particles. Front Bioeng Biotechnol 2023; 10:1105710. [PMID: 36686221 PMCID: PMC9853070 DOI: 10.3389/fbioe.2022.1105710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 12/14/2022] [Indexed: 01/08/2023] Open
Abstract
Three-dimensional (3D) structured organoids have become increasingly promising and effective in vitro models, and there is an urgent need for reliable models to assess health effects of inhaled pollutants on the human airway. In our study, we conducted a toxicity assessment of human airway organoids (hAOs) for tire wear particles (TWPs) as an emerging inhaled pollutant. We induced primary human bronchial epithelial cells (HBECs) to generated human airway organoids, which recapitulated the key features of human airway epithelial cells including basal cells, ciliated cells, goblet cells, and club cells. TWPs generated from the wearing of tire treads were considered a major source of emerging inhaled road traffic-derived non-exhaust particles, but their health effect on the lungs is poorly understood. We used human airway organoids to assess the toxicology of tire wear particles on the human airway. In an exposure study, the inhibitory effect of TWPs on the growth of human airway organoids was observed. TWPs induced significant cell apoptosis and oxidative stress in a dose-dependent manner. From the qPCR analysis, TWPs significantly up-regulated the expression pf genes involved in the inflammation response. Additionally, the exposure of TWPs reduced SCGB1A1 gene expression associated with the function of the club cell and KRT5 gene expression related to the function of basal cells. In conclusion, this was first study using human airway organoids for a toxicological assessment of TWPs, and our findings revealed that human airway organoids provide an evaluation model of inhaled pollutants potentially affecting the lungs.
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Affiliation(s)
- Yingying Jiang
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao, China
| | | | - Chao Du
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao, China
| | - Yanting Li
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao, China
| | - Wenting Cheng
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao, China
| | - Huanhuan Bi
- Department of Pulmonary and Critical Care Medicine, Affiliated Hospital of Medical College of Qingdao University, Qingdao, China
| | - Guo Li
- Department of Pulmonary and Critical Care Medicine, Affiliated Hospital of Medical College of Qingdao University, Qingdao, China
| | - Min Zhuang
- Department of Pulmonary and Critical Care Medicine, Affiliated Hospital of Medical College of Qingdao University, Qingdao, China
| | - Dunqiang Ren
- Department of Pulmonary and Critical Care Medicine, Affiliated Hospital of Medical College of Qingdao University, Qingdao, China
| | - Hongmei Wang
- Department of Pulmonary and Critical Care Medicine, Affiliated Hospital of Medical College of Qingdao University, Qingdao, China,*Correspondence: Hongmei Wang, ; Xiaoya Ji,
| | - Xiaoya Ji
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao, China,*Correspondence: Hongmei Wang, ; Xiaoya Ji,
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Zhang J, Li X, Cheng W, Li Y, Shi T, Jiang Y, Wang T, Wang H, Ren D, Zhang R, Zheng Y, Tang J. Chronic carbon black nanoparticles exposure increases lung cancer risk by affecting the cell cycle via circulatory inflammation. Environ Pollut 2022; 305:119293. [PMID: 35421554 DOI: 10.1016/j.envpol.2022.119293] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 03/22/2022] [Accepted: 04/09/2022] [Indexed: 06/14/2023]
Abstract
As a widely used pure elemental carbon in colloidal particles, carbon black was listed as a group 2B carcinogen by IARC in 2010. The most available mechanism information about carbon black and carcinogenesis are from in vivo or in vitro studies. However, few studies concerned the nanoparticle's real-ambient exposure causing systemic change and further affecting the target organ. Herein, we used an ex vivo biosensor assay to investigate the transcriptome change of primary bronchial epithelial cells after treatment with the plasma from workers with long-term occupational carbon black exposure history. Based on ex vivo biosensor assay and transcriptome sequencing, we found the effect of internal systemic environment on epithelial cells after carbon black exposure was an inflammatory response, which mainly activates cell cycle-related pathways. After exposure to carbon black, the internal systemic environment could activate cancer-related pathways like epithelial-mesenchymal transition, hypoxia, TNF-α signaling via NF-κB. The hub genes in the carbon black group (CDC20 and PLK1) and their correlation with the systemic environment were uncovered by constructing the protein-protein interaction network. Inflammatory cytokines, especially CRP, were strongly correlated with the expression of CDC20 and PLK1. Besides, we also find a strong correlation between CDC20 and cytokinesis-block micronucleus endpoints in peripheral blood (rho = 0.591, P < 0.001). Our results show that long-term carbon black exposure might activate cell cycle-related pathways through circulating inflammation and increase the risk of cancer, while the oxidative stress caused by diesel exhaust particles are mainly related to PAHs exposure. After exposure to carbon black, the systemic environment could activate cancer-related pathways like diesel exhaust particles, increasing the risk of lung cancer. These attempts might provide a further understanding of the indirect effect of chronic occupational inhaled carbon black exposure on pulmonary carcinogenesis.
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Affiliation(s)
- Jianzhong Zhang
- School of Public Health, Qingdao University, Qingdao, 266071, China
| | - Xin Li
- School of Public Health, Qingdao University, Qingdao, 266071, China
| | - Wenting Cheng
- School of Public Health, Qingdao University, Qingdao, 266071, China
| | - Yanting Li
- School of Public Health, Qingdao University, Qingdao, 266071, China
| | - Teng Shi
- School of Public Health, Qingdao University, Qingdao, 266071, China
| | - Yingying Jiang
- School of Public Health, Qingdao University, Qingdao, 266071, China
| | - Tao Wang
- School of Public Health, Qingdao University, Qingdao, 266071, China
| | - Hongmei Wang
- The Affiliated Hospital of Qingdao University, Qingdao, 266000, China
| | - Dunqiang Ren
- The Affiliated Hospital of Qingdao University, Qingdao, 266000, China
| | - Rong Zhang
- School of Public Health, Hebei Medical Univeristy, Shijiazhuang, 050017, China
| | - Yuxin Zheng
- School of Public Health, Qingdao University, Qingdao, 266071, China
| | - Jinglong Tang
- School of Public Health, Qingdao University, Qingdao, 266071, China.
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Cheng W, Pang H, Campen MJ, Zhang J, Li Y, Gao J, Ren D, Ji X, Rothman N, Lan Q, Zheng Y, Leng S, Hu Z, Tang J. Circulatory metabolites trigger ex vivo arterial endothelial cell dysfunction in population chronically exposed to diesel exhaust. Part Fibre Toxicol 2022; 19:20. [PMID: 35313899 PMCID: PMC8939222 DOI: 10.1186/s12989-022-00463-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 03/15/2022] [Indexed: 11/27/2022] Open
Abstract
Background Chronic exposure to diesel exhaust has a causal link to cardiovascular diseases in various environmental and occupational settings. Arterial endothelial cell function plays an important role in ensuring proper maintenance of cardiovascular homeostasis and the endothelial cell dysfunction by circulatory inflammation is a hallmark in cardiovascular diseases. Acute exposure to diesel exhaust in controlled exposure studies leads to artery endothelial cells dysfunction in previous study, however the effect of chronic exposure remains unknown. Results We applied an ex vivo endothelial biosensor assay for serum samples from 133 diesel engine testers (DETs) and 126 non-DETs with the aim of identifying evidence of increased risk for cardiovascular diseases. Environmental monitoring suggested that DETs were exposed to high levels of diesel exhaust aerosol (282.3 μg/m3 PM2.5 and 135.2 μg/m3 elemental carbon). Surprisingly, chronic diesel exhaust exposure was associated with a pro-inflammatory phenotype in the ex vivo endothelial cell model, in a dose-dependent manner with CCL5 and VCAM as most affected genes. This dysfunction was not mediated by reduction in circulatory pro-inflammatory factors but significantly associated with a reduction in circulatory metabolites cGMP and an increase in primary DNA damage in leucocyte in a dose-dependent manner, which also explained a large magnitude of association between diesel exhaust exposure and ex vivo endothelial biosensor response. Exogenous cGMP addition experiment further confirmed the induction of ex vivo biosensor gene expressions in endothelial cells treated with physiologically relevant levels of metabolites cGMP. Conclusion Serum-borne bioactivity caused the arterial endothelial cell dysfunction may attribute to the circulatory metabolites based on the ex vivo biosensor assay. The reduced cGMP and increased polycyclic aromatic hydrocarbons metabolites-induced cyto/geno-toxic play important role in the endothelial cell dysfunction of workers chronic exposure to diesel exhaust. Supplementary Information The online version contains supplementary material available at 10.1186/s12989-022-00463-0.
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Affiliation(s)
- Wenting Cheng
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao, 266021, Shandong, China
| | - Huanhuan Pang
- School of Pharmaceutical Sciences, Tsinghua University, Beijing, 100084, China
| | - Matthew J Campen
- Department of Pharmaceutical Sciences, College of Pharmacy, University of New Mexico, Albuquerque, NM, 87131, USA
| | - Jianzhong Zhang
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao, 266021, Shandong, China
| | - Yanting Li
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao, 266021, Shandong, China
| | - Jinling Gao
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao, 266021, Shandong, China
| | - Dunqiang Ren
- Department of Respiratory Medicine, Affiliated Hospital of Medical College of Qingdao University, Qingdao University, Qingdao, 266021, Shandong, China
| | - Xiaoya Ji
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao, 266021, Shandong, China
| | - Nathaniel Rothman
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD, 20850, USA
| | - Qing Lan
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD, 20850, USA
| | - Yuxin Zheng
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao, 266021, Shandong, China
| | - Shuguang Leng
- Department of Internal Medicine, School of Medicine, University of New Mexico, Albuquerque, NM, 87131, USA. .,Cancer Control and Population Sciences, University of New Mexico Comprehensive Cancer Center, Albuquerque, NM, 87131, USA.
| | - Zeping Hu
- School of Pharmaceutical Sciences, Tsinghua University, Beijing, 100084, China.
| | - Jinglong Tang
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao, 266021, Shandong, China.
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10
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Pei X, Zheng F, Li Y, Lin Z, Han X, Feng Y, Tian Z, Ren D, Cao K, Li C. Niclosamide Ethanolamine Salt Alleviates Idiopathic Pulmonary Fibrosis by Modulating the PI3K-mTORC1 Pathway. Cells 2022; 11:cells11030346. [PMID: 35159160 PMCID: PMC8834116 DOI: 10.3390/cells11030346] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 01/05/2022] [Accepted: 01/15/2022] [Indexed: 12/24/2022] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is an interstitial pneumonia characterized by chronic progressive fibrosis, ultimately leading to respiratory failure and early mortality. Although not fully explored, the major causative factors in IPF pathogenesis are dysregulated fibroblast proliferation and excessive accumulation of extracellular matrix (ECM) deposited by myofibroblasts differentiated from pulmonary fibroblasts. More signalling pathways, including the PI3K-Akt-mTOR and autophagy pathways, are involved in IPF pathogenesis. Niclosamide ethanolamine salt (NEN) is a highly effective multitarget small-molecule inhibitor reported in antitumor studies. Here, we reported that in an IPF animal model treated with NEN for 14 days, attractive relief of pulmonary function and hydroxyproline content were observed. To further explore, the therapeutic effect of NEN in IPF and pathological changes in bleomycin-challenged mouse lung sections were assessed. Additionally, the effects of NEN on abnormal proliferation and ECM production in IPF cell models established with TGF-β1-stimulated A549 cells or DHLF-IPF cells were studied. In nonclinical studies, NEN ameliorated lung function and histopathological changes in bleomycin-challenged mice, and the lung hydroxyproline content was significantly diminished with NEN treatment. In vitro, NEN inhibited PI3K-mTORC1 signalling and arrested the cell cycle to prevent uncontrolled fibroblast proliferation. Additionally, NEN inhibited TGF-β1-induced epithelial–mesenchymal transition (EMT) and ECM accumulation via the mTORC1-4EBP1 axis. Furthermore, NEN-activated noncanonical autophagy resensitized fibroblasts to apoptosis. The above findings demonstrated the potential antifibrotic effect of NEN mediated via modulation of the PI3K-mTORC1 and autophagy pathways. These data provide strong evidence for a therapeutic role for NEN in IPF.
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Affiliation(s)
- Xiaolin Pei
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin 300350, China; (X.P.); (F.Z.); (Y.L.); (Z.L.); (X.H.); (Y.F.)
| | - Fangxu Zheng
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin 300350, China; (X.P.); (F.Z.); (Y.L.); (Z.L.); (X.H.); (Y.F.)
| | - Yin Li
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin 300350, China; (X.P.); (F.Z.); (Y.L.); (Z.L.); (X.H.); (Y.F.)
| | - Zhoujun Lin
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin 300350, China; (X.P.); (F.Z.); (Y.L.); (Z.L.); (X.H.); (Y.F.)
| | - Xiao Han
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin 300350, China; (X.P.); (F.Z.); (Y.L.); (Z.L.); (X.H.); (Y.F.)
| | - Ya Feng
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin 300350, China; (X.P.); (F.Z.); (Y.L.); (Z.L.); (X.H.); (Y.F.)
| | - Zhenhuan Tian
- Department of Thoracic Surgery, Peking Union Medical College Hospital, Peking Union Medical College, Beijing 100730, China;
| | - Dunqiang Ren
- Department of Respiratory and Critical Care Medicine, The Affiliated Hospital of Qingdao University, Qingdao 266000, China;
| | - Ke Cao
- Department of Pathophysiology, Jinzhou Medical University, Jinzhou 121001, China
- Correspondence: (K.C.); (C.L.)
| | - Chenggang Li
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin 300350, China; (X.P.); (F.Z.); (Y.L.); (Z.L.); (X.H.); (Y.F.)
- Correspondence: (K.C.); (C.L.)
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11
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Wei L, Guo Y, Ding X, Guo C, Ge N, Ren D, Wang H. The liver X receptor agonist T0901317 reduces the inflammation of alveolar epithelial cells induced by polyhexamethylene guanidine through inhibition of the NFκB signaling pathway. Ann Transl Med 2021; 9:1795. [PMID: 35071489 PMCID: PMC8756235 DOI: 10.21037/atm-21-6501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 12/22/2021] [Indexed: 11/21/2022]
Abstract
Background As a kind of disinfectant, polyhexamethylene guanidine (PHMG) can cause pulmonary inflammation. In addition to liver X receptors (LXRs) playing an important role in cholesterol and lipid metabolism, it has also been found to be involved in inflammation in recent years. This article explores the role of LXRs agonist T0901317 in the inflammation of alveolar epithelial cells induced by PHMG. Methods The A549 human alveolar basal epithelial cell line was exposed to PHMG, T0901317, or the nuclear factor (NF)κB inhibitor BAY11-7082. The cell survival rate was used to determine the cytotoxicity of PHMG and T0901317 to A549 cells. Western blot analysis was used to determine the expression of proteins related to the LXRs and the NFκB signaling pathway. Enzyme-linked immunosorbent assay (ELISA) was conducted to examine the expression of inflammatory cytokines such as interleukin (IL)-8 and interleukin (IL)-6. Results Incubation of A549 cells with PHMG decreased the expression of LXRs-related proteins, reduced the expression of cellular IκB, increased the expression of nuclear NFκB, and increased the levels of the inflammatory cytokineIL-8 and IL-6. However, pretreatment with the LXR agonist T0901317 partially reversed the effects of PHMG. The effects of T0901317on NFκB signaling pathway was similar to that observed with the NFκB inhibitor BAY11-7082. Conclusions The LXRs agonist T0901317 may reduce the inflammation of alveolar epithelial cells induced by PHMG by inhibiting the NFκB signaling pathway.
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Affiliation(s)
- Lutang Wei
- Department of Respiratory and Critical Care Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao, China
| | - Yongzhong Guo
- Department of Respiratory and Critical Care Medicine, Xuzhou Central Hospital, The Xuzhou School of Clinical Medicine of Nanjing Medical University, Xuzhou Clinical School of Xuzhou Medical University, Xuzhou, China
| | - Xiaoqian Ding
- Department of Respiratory and Critical Care Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Caihong Guo
- Department of Respiratory and Critical Care Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Nan Ge
- Department of Thoracic Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Dunqiang Ren
- Department of Respiratory and Critical Care Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao, China
| | - Hongmei Wang
- Department of Respiratory and Critical Care Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
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12
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Bi H, Ren D, Wu J, Ding X, Guo C, Miura S, Megyesfalvi Z, Arulananda S, Wang H. Lung squamous cell carcinoma with rare epidermal growth factor receptor mutation G719X: a case report and literature review. Ann Transl Med 2021; 9:1805. [PMID: 35071499 PMCID: PMC8756238 DOI: 10.21037/atm-21-6653] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 12/23/2021] [Indexed: 12/12/2022]
Abstract
Asians who develop non-small cell lung cancer (NSCLC) have a chance of approximately 50% of harboring the epidermal growth factor receptor (EGFR) mutation. The G719X mutation in EGFR has 3 subtypes (i.e., G719A, G719C, or G719S), all of them being classified as uncommon EGFR mutations. The EGFR mutation G719X is most often associated with lung adenocarcinoma. Conversely, its occurrence in lung squamous cell carcinoma is rare. Its response to tyrosine kinase inhibitor (TKI) treatment remains unknown. A 50-year-old Asian male with no smoking history was admitted to our hospital (Affiliated Hospital of Qingdao University) with an irritating dry cough and 1 month of progressive dyspnea. The patient was diagnosed with lung squamous cell carcinoma (cT4N3M0, stage IIIC). Lung biopsy revealed the presence of EFGR G719X mutation. The patient received a tracheobronchial stent, targeted therapy, chemotherapy, seed implantation and radiotherapy, and survived for 25.4 months following diagnosis. It is crucial that gene mutation analysis is performed in non-smoking male squamous cell carcinoma patients. Compared to lung adenocarcinoma patients with rare G719X mutation, this lung squamous cell carcinoma patient with G719X-mutant tumor had a higher sensitivity to 2nd-generation EGFR-TKI treatment, but similar progression-free survival. Importantly, the patient clearly benefited from the used comprehensive treatment plan. This article seeks to shed light on the treatment of lung squamous cell carcinoma patients with the uncommon EGFR G719X mutation.
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Affiliation(s)
- Huanhuan Bi
- Department of Respiratory and Critical Care Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Dunqiang Ren
- Department of Respiratory and Critical Care Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Jieqiong Wu
- Department of Respiratory and Critical Care Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xiaoqian Ding
- Department of Respiratory and Critical Care Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Caihong Guo
- Department of Respiratory and Critical Care Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Satoru Miura
- Department of Internal Medicine, Niigata Cancer Center Hospital, Niigata, Japan
| | - Zsolt Megyesfalvi
- Department of Thoracic Surgery, National Institute of Oncology-Semmelweis University, Budapest, Hungary.,National Koranyi Institute of Pulmonology, Budapest, Hungary.,Department of Thoracic Surgery, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Surein Arulananda
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Hongmei Wang
- Department of Respiratory and Critical Care Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
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13
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Li X, Zhang J, Du C, Jiang Y, Zhang W, Wang S, Zhu X, Gao J, Zhang X, Ren D, Zheng Y, Tang J. Polyhexamethylene guanidine aerosol triggers pulmonary fibrosis concomitant with elevated surface tension via inhibiting pulmonary surfactant. J Hazard Mater 2021; 420:126642. [PMID: 34329089 DOI: 10.1016/j.jhazmat.2021.126642] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 06/26/2021] [Accepted: 07/12/2021] [Indexed: 06/13/2023]
Abstract
Environmental chemicals inhalation exposure could induce pulmonary fibrosis, which is characterized by the excessive proliferation of fibroblasts and accumulation of extracellular matrix components, in which surface tension usually plays vital roles. Polyhexamethylene guanidine (PHMG) was first recognized as a potential hazard ingredient in humidifier disinfectants, which caused an outbreak of pulmonary fibrosis in South Korea. However, the underlying mechanisms involved in PHMG-induced pulmonary fibrosis have not yet been fully elucidated. Therefore, this study mainly focuses on the effect of PHMG on surface tension to unveil the influence and involved mechanisms in PHMG-induced pulmonary fibrosis. C57BL/6J mice were exposed to sub-acute PHMG aerosol for 8 weeks. The results indicated that PHMG induced pulmonary fibrosis combined with elevated surface tension. Results from in vitro study further confirmed PHMG elevated surface tension by inhibited pulmonary surfactant. Mechanistically, PHMG suppressed the key surfactant protein SP-B and SP-C by inhibiting protein expression and block their active sites. The present study, for the first time, revealed the molecular mechanism of PHMG-induced pulmonary fibrosis based on pulmonary surfactant inhibition mediated surface tension elevated. And pulmonary surfactant may be a potential target for further intervention to prevent PHMG-induced fibrosis or alleviate the symptom of relevant patients.
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Affiliation(s)
- Xin Li
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Jianzhong Zhang
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Chao Du
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Yingying Jiang
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Wanjun Zhang
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Shuo Wang
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Xiaoxiao Zhu
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Jinling Gao
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Xinru Zhang
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Dunqiang Ren
- Department of Respiratory Medicine, Affiliated Hospital of Medical College of Qingdao University, Qingdao 266021, China
| | - Yuxin Zheng
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Jinglong Tang
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266071, China.
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14
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Abstract
BACKGROUND This study was aimed to investigate the associations among Chitinase 3-like 1 (CHI3L1) polymorphisms, asthma and plasma YKL-40 levels in Chinese population. MATERIAL AND METHODS Four CHI3L1 single nucleotide polymorphisms (SNPs) were genotyped. The YKL-40 level in plasma and eosinophil percentage in peripheral blood were quantified. RESULTS A SNP (rs4950928) in the CHI3L1 promoter was associated with elevated plasma YKL-40 levels (p = .02), asthma (p = .042) and lung function (p = .029 to .002) in this Chinese population. Plasma YKL-40 levels were significantly elevated in patients with asthma compared to those in control subjects (p < .05). Plasma YKL-40 levels were significantly correlated with forced expiratory volume per cent (FEV1%) measurements (p < .05). Although plasma YKL-40 levels were decreased after treatment, the correlation with FEV1% still existed. CONCLUSIONS CHI3L1 locus is a risk factor for asthma in Chinese population.
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Affiliation(s)
- Jinlian Shao
- Department of ICU, The First Affiliated Hospital of Shantou University Medical College, Shantou, China
- Department of Respiratory Diseases, Nanfang Hospital, Guangzhou, China
| | - Xuexi Yang
- Department of Immunology, Southern Medical University, Guangzhou, China
| | - Dunqiang Ren
- The Affiliated Hospital of Medical College, Qingdao University, Qingdao, China
| | - Yaling Luo
- Department of Respiratory Diseases, Nanfang Hospital, Guangzhou, China
| | - Wenyan Lai
- Laborwatory of Cardiovascular Diseases, Nanfang Hospital, Guangzhou, China
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15
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Abstract
The incidence of lung cancer is high worldwide, and lung cancer is the leading cause of death from malignant tumors in both men and women. Early diagnosis of lung cancer can significantly improve the patient's prognosis. Therefore, searching for specific markers to assist in the early diagnosis of lung cancer is urgent question. Exosomes are nano-sized microvesicles and contain various biomaterial, including nucleic acids, proteins, and lipids. Exosomes are important carriers of these biomaterial, serve important roles in intracellular communications and signal transduction among tissues. Due to its unique enrichment mechanism, it has the stability and specificity as a biomarker. Exosomes are not only involved in the formation of tumor microenvironment and new blood vessels in lung cancer, but also involved in chemotherapy, targeted therapy response and prognosis assessment. Many research advances bring new hope for prolonging the survival of lung cancer patients. This article reviews the value of exosome specific protein and microRNA (miRNA) in lung cancer in the diagnosis and prognosis of lung cancer.
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Affiliation(s)
- Huanhuan Bi
- Department of Respiratory and Critical Care Medcine, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Dunqiang Ren
- Department of Respiratory and Critical Care Medcine, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Jun Zhang
- Department of Respiratory and Critical Care Medcine, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Hongmei Wang
- Department of Respiratory and Critical Care Medcine, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
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16
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Bi H, Ren D, Wang Q, Ding X, Wang H. Immune checkpoint inhibitor-induced myocarditis in lung cancer patients: a case report of sintilimab-induced myocarditis and a review of the literature. Ann Palliat Med 2021; 10:793-802. [PMID: 33545801 DOI: 10.21037/apm-20-2449] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 01/17/2021] [Indexed: 11/06/2022]
Abstract
Since its initial approval by the United States Food and Drug Administration (FDA) in 2014, the indications for the use of the immune checkpoint inhibitors (ICIs) in non-small cell lung cancer (NSCLC) patients has increased. However, to date, there has no report on immune myocarditis caused by the ICI sintilimab. In addition, there has been no literature review on ICI-induced myocarditis in lung cancer patients. This is a case report of an elderly male patient who presented with a productive cough and progressive dysphagia for 3 days. The symptoms started on day 6 after the third cycle of sintilimab treatment for his lung carcinoma. In accordance with his clinical manifestations of progressive dysphagia, a previous history of lung cancer, abnormal electrocardiograph, significantly increased serum myocardial enzyme levels, and normal coronary angiography results, sintilimab-induced myocarditis was diagnosed. Methylprednisolone (80-40 mg) was used to inhibit the immune injury and the patient was safely discharged on the 13th day following admission. Since ICI-induced myocarditis is rare and fatal, we summarized the characteristics of 20 cases of the disease in lung cancer patients to highlight to oncologists, respiratory experts, and cardiologists the serious side effects of the drug when they encounter lung cancer patients using ICIs. Like most ICIs, sintilimab induces severe immune myocarditis and requires corticosteroids therapy, and this should be recognized by doctors in multiple departments.
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Affiliation(s)
- Huanhuan Bi
- Department of Respiratory and Critical Care Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Dunqiang Ren
- Department of Respiratory and Critical Care Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Qiang Wang
- Department of Respiratory and Critical Care Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xiaoqian Ding
- Department of Respiratory and Critical Care Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Hongmei Wang
- Department of Respiratory and Critical Care Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China.
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17
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Zhang B, Liu W, Ren D, Li F, Wang Y, Huo D, Zhu S, Chen J, Song Q, Xu S. 62MO Comparison of lobectomy and sublobar resection for stage IA elderly NSCLC patients (≥70 years): A population-based propensity score matching study. J Thorac Oncol 2021. [DOI: 10.1016/s1556-0864(21)01904-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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18
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Zhang J, Ren D, Cao X, Wang T, Geng X, Li X, Tang J, Leng S, Wang H, Zheng Y. Ambient air pollutants and hospital visits for pneumonia: a case-crossover study in Qingdao, China. BMC Public Health 2021; 21:66. [PMID: 33413265 PMCID: PMC7791776 DOI: 10.1186/s12889-020-10065-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 12/14/2020] [Indexed: 11/29/2022] Open
Abstract
Background Pneumonia is one of the principal reasons for incidence and death in the world. The former research mainly concentrated on specific sources of patients. Besides, due to the heterogeneity among regions, there are inconsistencies in the outcome of these surveys. To explore the relationship between atmospheric pollution and hospital visits for pneumonia under the climate and pollution conditions in Qingdao, we carried out this study. Methods The medical records of pneumonia patients were gathered from the affiliated hospital of Qingdao University during Jan 1st, 2014, and Dec 31st,2018. Daily concentrations of PM2.5, PM10, SO2, NO2, as well as CO, were collected from the national air quality monitoring stations in Qingdao. Case-crossover study design and conditional logistic regression model were used to estimate the associations. Daily temperature, relative humidity, and atmospheric pressure were adjusted as the covariates in all models. A principal component analysis was used to solve the multicollinearity between atmospheric pollutants and investigate the relationship between various air pollutants and pneumonia occurs. Results In the single pollutant model, with interquartile range increment of the density of PM2.5, PM10, NO2 and SO2 at the lag2 days, the odds ratio of hospital visits for pneumonia patients increased by 6.4% (95%CI, 2.3–10.7%), 7.7% (95%CI, 3.2–12.4%), 6.7% (95%CI, 1.0–12.7%), and 7.2% (95%CI, 1.1–13.5%). Stratified analysis showed that pollutants were more significant in the cold period. Besides, the impact of atmospheric particulates on different ages mainly occurs in the young child (0 to 3-year-old). The odds ratio was 1.042 (95%CI, 1.012–1.072) when the principal components of atmospheric pollutants were included in the conditional logistic model. Conclusions Our study found a significant relationship between short-term uncovering to PM2.5, PM10, NO2, SO2, and hospital visits for pneumonia in Qingdao. The effect of atmospheric pollutants mainly arose in a cold period. The particulate matter might be the principal reason in inducing hospital visits for pneumonia.
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Affiliation(s)
- Jianzhong Zhang
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao, 266021, Shandong, China
| | - Dunqiang Ren
- Department of Respiratory Medicine and Critical care, The Affiliated Hospital of Qingdao University, Qingdao, 266003, Shandong, China
| | - Xue Cao
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao, 266021, Shandong, China
| | - Tao Wang
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao, 266021, Shandong, China
| | - Xue Geng
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao, 266021, Shandong, China
| | - Xin Li
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao, 266021, Shandong, China
| | - Jinglong Tang
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao, 266021, Shandong, China
| | - Shuguang Leng
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao, 266021, Shandong, China
| | - Hongmei Wang
- Department of Respiratory Medicine and Critical care, The Affiliated Hospital of Qingdao University, Qingdao, 266003, Shandong, China
| | - Yuxin Zheng
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao, 266021, Shandong, China.
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19
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Zhu X, Kong X, Ma S, Liu R, Li X, Gao S, Ren D, Zheng Y, Tang J. TGFβ/Smad mediated the polyhexamethyleneguanide areosol-induced irreversible pulmonary fibrosis in subchronic inhalation exposure. Inhal Toxicol 2020; 32:419-430. [PMID: 33148071 DOI: 10.1080/08958378.2020.1836091] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
AIM Polyhexamethylene guanidine (PHMG) is widely used as a disinfectant with broad spectra of bactericidal activity and low oral toxicity. However, inhalation of PHMG can cause pulmonary injury and severe pulmonary fibrosis. The mechanism underlying PHMG aerosol induced pulmonary fibrosis remains unclear. In this study, we aimed to examine the subchronic lung injury and determine potential cytokines involved in PHMG aerosol induced fibrosis. METHODS C57BL/6N mice were exposed to 1.03 mg/m3 PHMG through aerosol inhalation for 3 weeks, or 3 weeks followed by other 3 weeks recovery. RESULTS The results indicated that the expression of transforming growth factor-beta1 (TGF-β1) and extracellular matrix remodeling markers were up-regulated in the PHMG-treated mice and these parameters were aggravated after 3 weeks recovery. Bronchoalveolar lavage fluids (BALFs) analysis showed that the number of total cells was significantly decreased in exposure group. The percentage of macrophages in BALFs decreased significantly whereas the percentage of neutrophils and lymphocytes increased. Extensive collagen deposition was observed in the peribronchiolar and interstitial areas in the PHMG exposed lungs. CONCLUSION In conclusion, even low-does PHMG aerosol exposure could induce mice pulmonary local inflammation and irreversible fibrosis. In addition, TGF-β/Smad signaling pathway mediated the extracellular matrix remodeling involved in the development of pulmonary fibrosis.
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Affiliation(s)
- Xiaoxiao Zhu
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao, China
| | - Xiao Kong
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao, China
| | - Sai Ma
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao, China
| | - Rui Liu
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao, China
| | - Xin Li
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao, China
| | - Shaobo Gao
- Department of Respiratory Medicine, the Affiliated Hospital of Medical College Qingdao University, Qingdao, China
| | - Dunqiang Ren
- Department of Respiratory Medicine, the Affiliated Hospital of Medical College Qingdao University, Qingdao, China
| | - Yuxin Zheng
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao, China
| | - Jinglong Tang
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao, China
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20
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Bi H, Ren D, Ding X, Yin X, Cui S, Guo C, Wang H. Clinical characteristics of patients with ROS1 gene rearrangement in non-small cell lung cancer: a meta-analysis. Transl Cancer Res 2020; 9:4383-4392. [PMID: 35117804 PMCID: PMC8797378 DOI: 10.21037/tcr-20-1813] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Accepted: 05/26/2020] [Indexed: 11/21/2022]
Abstract
BACKGROUND ROS1 gene rearrangement has been reported in several types of cancers, including non-small cell lung cancer (NSCLC). It is reported that tyrosine kinase inhibitors are effective in the treatment of ROS1-rearranged NSCLC. Therefore, the identification of ROS1 rearrangement can be used as potential therapeutic target in lung cancer. Epidemiological data indicates that ROS1 gene rearrangement occurs in approximately 1-2% of NSCLC patients. The small sample sizes of the existing associated studies only represent the characteristics of patients in specific regions or countries, and there is still no latest statistical analysis on ROS1 gene rearrangement anywhere in the world. METHODS We conducted a systematic search of the PubMed, Embase, Cochrane Central Register of Controlled Trials (CENTRAL), CBM, CNKI, Wanfang, and VIP databases to identify studies on ROS1 gene rearrangement in NSCLC patients from January 1, 2015 to October 27, 2019. We conducted a meta-analysis to investigate the relationship between ROS1 gene rearrangement and clinical characteristics of NSCLC patients. The four clinical features are as follows: gender, smoking status, pathological type, and lung cancer stage. RESULTS Thirty-nine studies constituting of 25,055 NSCLC patients were eligible for inclusion in this meta-analysis. A prominently higher rate of ROS1 gene rearrangement was observed in female NSCLC patients (OR =1.94, 95% CI: 1.62-2.32%, P<0.05), patients with no smoking history (OR =2.82, 95% CI: 2.24-3.55%, P<0.05), patients with adenocarcinoma (OR =1.55, 95% CI: 1.14-2.11%, P<0.05), and patients with stage III-IV disease (OR =1.50, 95% CI: 1.15-1.94%, P<0.05). Our meta-analysis also showed that the prevalence of ROS1 rearrangement in adenocarcinoma was 2.49% (95% CI: 1.92-3.11%), while it was lower in non-adenocarcinoma patients (1.37%). CONCLUSIONS ROS1 gene rearrangement was more predominant in female patients, patients without smoking history, patients with adenocarcinoma and patients with advanced-stage disease (stages III to IV).
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Affiliation(s)
- Huanhuan Bi
- Department of Respiratory and Critical Care Medicine, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Dunqiang Ren
- Department of Respiratory and Critical Care Medicine, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Xiaoqian Ding
- Department of Respiratory and Critical Care Medicine, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Xiaojiao Yin
- Department of Respiratory and Critical Care Medicine, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Shichao Cui
- Department of Respiratory and Critical Care Medicine, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Caihong Guo
- Department of Respiratory and Critical Care Medicine, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Hongmei Wang
- Department of Respiratory and Critical Care Medicine, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
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Wang T, Wang H, Chen J, Wang J, Ren D, Hu W, Wang H, Han W, Leng S, Zhang R, Zheng Y. Association between air pollution and lung development in schoolchildren in China. J Epidemiol Community Health 2020; 74:792-798. [PMID: 32527860 PMCID: PMC7577101 DOI: 10.1136/jech-2020-214283] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 05/13/2020] [Accepted: 05/23/2020] [Indexed: 12/24/2022]
Abstract
Background China has been facing nationwide air pollution at unprecedented high levels primarily from fossil–fuel combustion in the past decade. However, few studies have been conducted on the adverse effect of severe air pollution on lung development in school-age children. Methods Using wellness check and air pollution data from 2014 to 2017, we conducted a retrospective analysis of lung development in 21 616 school-age children from Shijiazhuang and Qingdao from North China with severe vs mild air pollution. Linear mixed effects model was performed to assess the effect of air pollution on forced vital capacity (FVC) growth. Results Exposure to severe air pollution was associated with a dramatic reduction in annual FVC growth rate (−71.3 mL, p< 0.001). In addition, every 10 μg/m3 increase in annual PM2.5 level was associated with a reduction of annual FVC growth by 12.2 mL ( p< 0.001). Sex discrepancy (boys vs girls) in FVC growth was greater in Qingdao (35.4 mL/year, 95% CI: 26.0 to 44.7) than in Shijiazhuang (19.8 mL/year, 95% CI: 9.3 to 30.3) (p for interaction=0.063). Exposure to indoor coal- or wood-burning stove heating (−79.4 mL, p< 0.001) and secondhand smoke at home (−59.3 mL, p= 0.003) were inversely associated with FVC growth. Conclusion Our study raised serious alarm over the threat of severe air pollution to lung development in school-age children. Sex discrepancy in lung development was reduced dramatically in heavily polluted area.
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Affiliation(s)
- Tao Wang
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao, China
| | - Haitao Wang
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao, China
| | - Jian Chen
- Department of School Health, Qingdao Municipal Center for Disease Control and Prevention, Qingdao, China
| | - Jiansheng Wang
- Policy Research Center for Environment and Economy, Ministry of Ecology and Environment of the People's Republic of China, Beijing, China
| | - Dunqiang Ren
- Department of Respiratory and Critical Care Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Wei Hu
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao, China
| | - Hongmei Wang
- Department of Respiratory and Critical Care Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Wei Han
- Department of Respiratory and Critical Care Medicine, Qingdao Municipal Hospital Group, Qingdao, China
| | - Shuguang Leng
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao, China
| | - Rong Zhang
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang City, China
| | - Yuxin Zheng
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao, China
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Drizik E, Corbett S, Zheng Y, Vermeulen R, Dai Y, Hu W, Ren D, Duan H, Niu Y, Xu J, Fu W, Meliefste K, Zhou B, Zhang X, Yang J, Bassig B, Liu H, Ye M, Liu G, Jia X, Meng T, Bin P, Zhang J, Silverman D, Spira A, Rothman N, Lenburg ME, Lan Q. Transcriptomic changes in the nasal epithelium associated with diesel engine exhaust exposure. Environ Int 2020; 137:105506. [PMID: 32044442 PMCID: PMC8725607 DOI: 10.1016/j.envint.2020.105506] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 12/19/2019] [Accepted: 01/17/2020] [Indexed: 05/13/2023]
Abstract
BACKGROUND Diesel engine exhaust (DEE) exposure causes lung cancer, but the molecular mechanisms by which this occurs are not well understood. OBJECTIVES To assess transcriptomic alterations in nasal epithelium of DEE-exposed factory workers to better understand the cellular and molecular effects of DEE. METHODS Nasal epithelial brushings were obtained from 41 diesel engine factory workers exposed to relatively high levels of DEE (17.2-105.4 μg/m3), and 38 unexposed workers from factories without DEE exposure. mRNA was profiled for gene expression using Affymetrix microarrays. Linear modeling was used to identify differentially expressed genes associated with DEE exposure and interaction effects with current smoking status. Pathway enrichment among differentially expressed genes was assessed using EnrichR. Gene Set Enrichment Analysis (GSEA) was used to compare gene expression patterns between datasets. RESULTS 225 genes had expression associated with DEE exposure after adjusting for smoking status (FDR q < 0.25) and were enriched for genes in pathways related to oxidative stress response, cell cycle pathways such as MAPK/ERK, protein modification, and transmembrane transport. Genes up-regulated in DEE-exposed individuals were enriched among the genes most up-regulated by cigarette smoking in a previously reported bronchial airway smoking dataset. We also found that the DEE signature was enriched among the genes most altered in two previous studies of the effects of acute DEE on PBMC gene expression. An exposure-response relationship was demonstrated between air levels of elemental carbon and the first principal component of the DEE signature. CONCLUSIONS A gene expression signature was identified for workers occupationally exposed to DEE that was altered in an exposure-dependent manner and had some overlap with the effects of smoking and the effects of acute DEE exposure. This is the first study of gene expression in nasal epithelial cells of workers heavily exposed to DEE and provides new insights into the molecular alterations that occur with DEE exposure.
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Affiliation(s)
- E Drizik
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - S Corbett
- Bioinformatics Program, Boston University, Boston, MA, USA
| | - Y Zheng
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational, Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China.
| | - R Vermeulen
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands
| | - Y Dai
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational, Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - W Hu
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD, USA
| | - D Ren
- Chaoyang Center for Disease Control and Prevention, Chaoyang, China
| | - H Duan
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational, Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Y Niu
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational, Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - J Xu
- Hong Kong University, Hong Kong, China
| | - W Fu
- Chaoyang Center for Disease Control and Prevention, Chaoyang, China
| | - K Meliefste
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands
| | - B Zhou
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational, Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Xiaohui Zhang
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - J Yang
- Chaoyang Center for Disease Control and Prevention, Chaoyang, China
| | - Bryan Bassig
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD, USA
| | - Hanqiao Liu
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - M Ye
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational, Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Gang Liu
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - X Jia
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational, Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - T Meng
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational, Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - P Bin
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational, Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - J Zhang
- Nicholas School of the Environment and Duke Global Health Institute, Duke University, Durham, NC, USA; Global Health Research Center, Duke Kunshan University, Kunshan City, Jiangsu Province, China
| | - D Silverman
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD, USA
| | - A Spira
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA, USA; Bioinformatics Program, Boston University, Boston, MA, USA; The Lung Cancer Initiative at Johnson & Johnson, Cambridge, MA, USA
| | - N Rothman
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD, USA
| | - M E Lenburg
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA, USA; Bioinformatics Program, Boston University, Boston, MA, USA.
| | - Q Lan
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD, USA
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Guan R, Liu Y, Ren D, Li J, Xu T, Hu H. The efficacy and safety of fluticasone propionate/formoterol compared with fluticasone propionate/salmeterol in treating pediatric asthma: a systematic review and meta-analysis. J Int Med Res 2019; 48:300060519889442. [PMID: 31852314 PMCID: PMC7607222 DOI: 10.1177/0300060519889442] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Objective To evaluate the efficacy and safety of fluticasone propionate/formoterol
(FP/FORM) versus fluticasone propionate/salmeterol (FP/SAL) in treating
pediatric asthma during a 12-week treatment cycle. Methods Randomized controlled trials of FP/FORM compared with FP/SAL in treating
pediatric asthma were searched systematically using Medline, Embase, and the
Cochrane Controlled Trials Register. Results Two articles including 546 patients were evaluated. The FP/SAL group showed
obvious improvements in pre-dose forced expiratory volume in 1 s
(FEV1) from day 0 to 84, asthma symptom scores, and sleep
disturbance scores compared with the FP/FORM group; however, the FP/FORM
group had improved peak expiratory flow rate (PEFR). In terms of 2-hour
post-dose FEV1 from day 0 to 84, 2-hour forced expiratory flow at
25%, 50%, and 75%, and 2-hour forced vital capacity, we observed no
significant differences between the two groups. For safety, including
patients with at least one adverse event, bronchitis, cough, or pharyngitis,
both groups had similar incidences, differing only in incidence of
nasopharyngitis. Conclusion Compared with FP/FORM, FP/SAL showed a clear improvement in pre-dose
FEV1, asthma symptom scores, and sleep disturbance scores.
However, FP/FORM resulted in improved PEFR with a lower incidence of
nasopharyngitis.
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Affiliation(s)
- Renzheng Guan
- Department of Pediatrics, The Affiliated Hospital of Qingdao University, Qingdao, China.,Medical College, The Qingdao University, Qingdao, Shandong Province, China
| | - Yanli Liu
- Department of Respiratory Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Dunqiang Ren
- Department of Respiratory Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Jinfeng Li
- Department of Respiratory Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Tao Xu
- Department of Respiratory Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Haiyan Hu
- Center of Diagnosis and Treatment of Breast Disease, The Affiliated Hospital of Qingdao University, Qingdao, China
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Belmadani A, Jayaraj N, Ren D, George D, Paller A, Miller R, Menichella D. 666 Role for epidermal keratinocytes in small fiber degeneration in diabetic peripheral neuropathy. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Nugent BD, Ren D, Bender C, Rosenzweig M. Abstract P1-17-10: The impact of age and adjuvant chemotherapy modifications on disease-free and overall survival among African American women with breast cancer. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p1-17-10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: During chemotherapy for breast cancer, African American women receive less relative dose intensity with more dose reductions and early chemotherapy cessation compared to Caucasian women. Other research has found that older breast cancer patients are most at risk for treatment modifications; however, it is unclear if this remains true for African American patients. Furthermore, the clinical implications of treatment modifications and delays on survival is uncertain, particularly in African American patients.
Purpose: The purpose of this study was to investigate whether age (diagnosis <55 vs. diagnosis ≥55) was a moderator for the association between treatment modifications (dose held, dose delayed, and early cessation) and overall survival (OS) and disease-free survival (DFS) in African American women with breast cancer.
Methods: A retrospective cohort study of early stage African American breast cancer patients treated with adjuvant chemotherapy was employed. Dose held, dose delayed and early cessation were examined as dichotomous variables: any adjustment to the initially prescribed treatment plan was considered a modification. Medical record data extraction was utilized to gather this information. The sample was divided into two groups: those diagnosed <55 years of age and those diagnosed ≥55 years of age. A Cox's proportional hazards regression model was used to examine the interaction between age group and treatment modifications for OS and DFS, while controlling for stage and ER and HER2 status.
Results: In the study of 115 participants, 58 (50.4%) were diagnosed before the age of 55, and 57 (49.6%) were diagnosed age 55 or older. Across the entire sample, 43 (37.4%) patients experienced a treatment modification. There were no significant differences in the proportions of treatment modifications between the two age groups. We found no interaction between age group and treatment modifications for OS. However, there was a significant interaction between age group and held dose for DFS (p=0.045). Specifically, those diagnosed at 55 years of age and older, who had doses of chemotherapy held, experienced worse DFS compared to those who did not (hazard ratio (HR)=3.390, 95% CI (1.013,11.34)). In contrast, there was no difference in DFS between those who did and did not have doses held in patients diagnosed below 55 years of age (HR=0.563, 95%CI (0.159, 1.986)).
Conclusions: African American women receiving adjuvant chemotherapy for treatment of early stage breast cancer have high levels of treatment modifications across all age groups. However, held doses of chemotherapy in older African American patients were associated with worse DFS. Further research is needed to elucidate the clinical implications of adjuvant chemotherapy treatment modifications, particularly in African American patients, and the subgroups of patients who are at greatest risk.
Citation Format: Nugent BD, Ren D, Bender C, Rosenzweig M. The impact of age and adjuvant chemotherapy modifications on disease-free and overall survival among African American women with breast cancer [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P1-17-10.
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Affiliation(s)
- BD Nugent
- University of Pittsburgh, Pittsburgh, PA
| | - D Ren
- University of Pittsburgh, Pittsburgh, PA
| | - C Bender
- University of Pittsburgh, Pittsburgh, PA
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Pan Y, Jing J, Qiao L, Liu J, An L, Li B, Ren D, Liu W. MiRNA-seq reveals that miR-124-3p inhibits adipogenic differentiation of the stromal vascular fraction in sheep via targeting C/EBPα. Domest Anim Endocrinol 2018; 65:17-23. [PMID: 29860204 DOI: 10.1016/j.domaniend.2018.05.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 04/24/2018] [Accepted: 05/02/2018] [Indexed: 01/17/2023]
Abstract
MicroRNAs (miRNAs) are small noncoding 20-25 nt RNA molecules that regulate gene expression by posttranscriptional repression of messenger RNA. There have been few investigations on the profiles and functions of miRNAs in ovine subcutaneous fat; their roles in the metabolism and deposition of subcutaneous fat also remain unclear. In this study, small RNA libraries were constructed for 2 important Chinese local sheep breeds, Small-tailed Han Sheep, and Shanxi Meat Sheep Dam Line, and used for high-throughput sequencing. Differentially expressed miRNAs were identified, revealing the effect of miR-124-3p on adipogenic differentiation by targeting C/EBPα. Our results provide both a comprehensive understanding of miRNA expression patterns in sheep subcutaneous fat and an insight into the specific roles of miRNAs in adipogenesis.
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Affiliation(s)
- Y Pan
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China
| | - J Jing
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China
| | - L Qiao
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China
| | - J Liu
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China
| | - L An
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China
| | - B Li
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China
| | - D Ren
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China
| | - W Liu
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China.
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Abstract
BACKGROUND The clinical features of patients with common single-mutation of epidermal growth factor receptor (EGFR) in non-small cell lung cancer (NSCLC) has been well characterized. There is a high adenocarcinoma incidence rate among female patients with none or shorter smoking history. Those patients have higher objective response rate (ORR) and progression free survival (PFS) treated with EGFR tyrosine kinase inhibitors (EGFR-TKIs). However, it is still unclear that the clinical features of patients with EGFR double mutation and the sensitivity towards EGFR-TKIs treatment. METHODS We performed a retrospective cohort study of 1,238 primary NSCLC patients who had EGFR gene testing in Affiliated Hospital of Qingdao University from January 1, 2015 to December 31, 2016 and identified 603 patients with single mutation and 59 patients with double mutation. All genes were uniformly detected by using ARMS-PCR technology. We analyze the gene of 32 double-mutant patients with specific genotyping, and randomly selected 60 patients with single mutation and compared the clinical features with 59 patients with double mutation. Furthermore, we examined the efficacy of EGFR-TKIs treatment in lung cancer patients with double mutation and single mutation in EGFR. RESULTS The rare single mutation gene is the most common in patients with double mutation of EGFR. There is no significant statistical difference in gender, smoking history, age, pathological type or tumor-node-metastasis (TNM) staging among patients with single and double EGFR mutantion. In the double mutation patients treated with EGFR-TKIs, the objective response rate was 36.80%, the disease control rate was 68.40%. The objective response rate was 60.00% and the disease control rate was 90.00% in the patients with single mutation. However, overall PFS was significantly higher in EGFR single mutation patients (P=0.003), with median PFS of 12.0 months compared with 6.0 months in EGFR double mutation patients. CONCLUSIONS There was no significant difference between the clinical features of patients with EGFR double mutation and single mutation. Patients with EGFR double mutation is associated with poor survival underwent the first generation of EGFR-TKIs treatment compared with patients with a single mutation.
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Affiliation(s)
- Mengyao Wang
- Department of Respiration, Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Dunqiang Ren
- Department of Respiration, Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Caihong Guo
- Department of Respiration, Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Xiaoqian Ding
- Department of Respiration, Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Hongmei Wang
- Department of Respiration, Affiliated Hospital of Qingdao University, Qingdao 266003, China
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Ayrton ST, Chen X, Bain RM, Pulliam CJ, Achmatowicz M, Flick TG, Ren D, Cooks RG. Gas Phase Ion Chemistry to Determine Isoaspartate in a Peptide Backbone. J Am Soc Mass Spectrom 2018; 29:1339-1344. [PMID: 29546595 DOI: 10.1007/s13361-018-1923-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 02/06/2018] [Accepted: 02/07/2018] [Indexed: 06/08/2023]
Abstract
Proof of concept evidence is presented for a new method for the determination of isoaspartate, an important post-translational modification. Chemical derivatization is performed using common reagents for the modification of carboxylic acids and shown to yield suitable diagnostic information with regard to isomerization at the aspartate residue. The diagnostic gas phase chemistry is probed by collision-induced dissociation mass spectrometry, on the timescale of the MS experiment and semi-quantitative calibration of the percentage of isoaspartate in a peptide sample is demonstrated. Graphical Abstract ᅟ.
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Affiliation(s)
- S T Ayrton
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN, 47907, USA
| | - X Chen
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN, 47907, USA
| | - R M Bain
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN, 47907, USA
| | - C J Pulliam
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN, 47907, USA
| | - M Achmatowicz
- Department of Analytical Research & Development, Amgen Inc., 1 Amgen Center Drive, Thousand Oaks, CA, 91320, USA
| | - T G Flick
- Department of Analytical Research & Development, Amgen Inc., 1 Amgen Center Drive, Thousand Oaks, CA, 91320, USA
| | - D Ren
- Department of Analytical Research & Development, Amgen Inc., 1 Amgen Center Drive, Thousand Oaks, CA, 91320, USA
| | - R G Cooks
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN, 47907, USA.
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Ding P, Ren D, He S, He M, Zhang G, Chen Y, Sang H, Peng Z, Yan W. Sirt1 mediates improvement in cognitive defects induced by focal cerebral ischemia following hyperbaric oxygen preconditioning in rats. Physiol Res 2017; 66:1029-1039. [PMID: 28937253 DOI: 10.33549/physiolres.933544] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Hyperbaric oxygen preconditioning (HBO-PC) has been proposed as a safe and practical approach for neuroprotection in ischemic stroke. However, it is not known whether HPO-PC can improve cognitive deficits induced by cerebral ischemia, and the mechanistic basis for any beneficial effects remains unclear. We addressed this in the present study using rats subjected to middle cerebral artery occlusion (MCAO) as an ischemic stroke model following HBO-PC. Cognitive function and expression of phosphorylated neurofilament heavy polypeptide (pNF-H) and doublecortin (DCX) in the hippocampus were evaluated 14 days after reperfusion and after short interfering RNA-mediated knockdown of sirtuin1 (Sirt1). HBO-PC increased pNF-H and DCX expression and mitigated cognitive deficits in MCAO rats. However, these effects were abolished by Sirt1 knockdown. Our results suggest that HBO-PC can protect the brain from injury caused by ischemia-reperfusion and that Sirt1 is a potential molecular target for therapeutic approaches designed to minimize cognitive deficits caused by cerebral ischemia.
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Affiliation(s)
- P Ding
- Department of Anesthesiology, Gansu Provincial Hospital, Lanzhou, China, Department of Psychiatry, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China. pengzhengwu1446@ 163.com and
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Wang H, Xia F, Xing DM, Ren D, Feng W, Chen Y, Xiao ZH, Zhao ZM. [Effects of vacuum sealing drainage technique in acute and chronic suppurative tenosynovitis of hand]. Zhonghua Wai Ke Za Zhi 2017; 55:384-388. [PMID: 28464581 DOI: 10.3760/cma.j.issn.0529-5815.2017.05.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the effects of vacuum sealing drainage technique in acute and chronic suppurative tenosynovitis of hand. Methods: A total of 9 cases acute and chronic suppurative tenosynovitis patients from January 2013 to April 2015 in Puai Hospital Affiliated to Tongji Medical College, Huazhong University of Science and Technology were retrospectively reviewed. There were 6 males and 3 females, aging from 27 to 65 years, the average age was 55 years. There were 3 cases of index finger, 3 cases of middle finger, 2 cases of ring finger, 1 case include three fingers. The infection causes included stabbing with fishbone in 3 cases, stabbing with animal bone fragments in 3 cases, wound by sawdust in 3 cases, meat grinder injury in 1 case, multiple fingers crush injury postoperative infection of garbage truck in 1 case. Bacterial infection included 2 cases with Staphylococcus aureus, 2 cases with Staphylococcus epidermidis, 1 case with normal Escherichia coli, 1 case with mixed infection of Enterobacter aerogenes, Klebsiella oxytoca and Staphylococcus, 1 case with Bauman Acinetobacter bacillus, 1 case with Proteus mirabilis and 1 case of no growth of pathogenic bacteria culture. After thorough debridement, vacuum sealing drainage was used to observe the characteristics of irrigation fluid, the formation of cavity inflammation, the prognosis of infection and the recovery of finger function. Results: Seven patients with suppurative tenosynovitis were treated for 7 to 14 days, replaced the vacuum sealing drainage dressing once; 1 patient was an illustration of the finger tip defect flap infected patients after 21 days of treatment, replaced the vacuum sealing drainage dressing twice, 1 patient was an illustration of the central refers to trauma, postoperative infection patients 28 d, replaced three times in the VSD. The follow-up time was 3 to 12 months (mean 8.2 months), 7 patients without tendon necrosis, secondary suture with no infection, 2 cases of traumatic surgery of patients with infection, tendon necrosis was removed, the infection has been effectively controlled, secondary suture with no infection. There were 6 cases were good and 3 cases were poor in the evaluation of postoperative finger function. Conclusion: Thoroughly debridement after vacuum sealing drainage in the treatment of suppurative tenosynovitis of hand has satisfactory curative effect.
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Affiliation(s)
- H Wang
- Department of Hand Surgery, Puai Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
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Wang H, Guo C, Ren D, Xu T, Cao Y, Xiao W, Jiao W. Let it bind: cyclization of Mig-6 segment 2 to target EGFR signaling in lung cancer. Med Chem Res 2017. [DOI: 10.1007/s00044-017-1849-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Ren D, Zhang XX, Wang HK, Li WJ, Yu Y. Improving thermo-oxidative degradation resistance of bamboo fiber reinforced polypropylene composite with antioxidants. Part I: Screening of antioxidants. J Appl Polym Sci 2016. [DOI: 10.1002/app.44198] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- D. Ren
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
| | - X. X. Zhang
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
| | - H. K. Wang
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
| | - W. J. Li
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
| | - Y. Yu
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
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Ren D, Zhang XX, Wang HK, Li WJ, Yu Y. Improving thermo-oxidative degradation resistance of bamboo fiber reinforced polymer composites with antioxidants. Part II: Effect on other select properties. J Appl Polym Sci 2016. [DOI: 10.1002/app.44199] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- D. Ren
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
| | - X. X. Zhang
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
| | - H. K. Wang
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
| | - W. J. Li
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
| | - Y. Yu
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
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Li L, Zeng Q, Ren D, Huang L, Tang Y. 0517 Effect of buffalo αs1-casein polymorphism on the semi-hard Monterey Jack-type cheese quality. J Anim Sci 2016. [DOI: 10.2527/jam2016-0517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Liu M, Ren D, Wu D, Zheng J, Tu W. Stem Cell and Idiopathic Pulmonary Fibrosis: Mechanisms and Treatment. Curr Stem Cell Res Ther 2016; 10:466-76. [PMID: 25986617 DOI: 10.2174/1574888x10666150519092639] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2014] [Accepted: 05/04/2015] [Indexed: 01/12/2023]
Abstract
Idiopathic pulmonary fibrosis (IPF) is a progressive and lethal lung disease resulting from multiplex causes. Evidence indicates that stem/progenitor cells might play a key role in IPF pathogenesis and repair, which may provide some novel potential strategies for the future treatment of IPF. In this review, we first summarize the current understanding of the relationship between stem cells and IPF and then review the advancements made in recent clinical trials using stem/progenitor cells, especially mesenchymal stem cells, in treating IPF and their interpretations.
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Affiliation(s)
| | | | | | | | - Wenwei Tu
- Department of Pediatrics and Adolescent Medicine Li Ka Shing Faculty of Medicine, The University of Hong Kong China.
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Liu M, Zeng X, Wang J, Fu Z, Wang J, Liu M, Ren D, Yu B, Zheng L, Hu X, Shi W, Xu J. Immunomodulation by mesenchymal stem cells in treating human autoimmune disease-associated lung fibrosis. Stem Cell Res Ther 2016; 7:63. [PMID: 27107963 PMCID: PMC4842299 DOI: 10.1186/s13287-016-0319-y] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2015] [Revised: 03/09/2016] [Accepted: 04/08/2016] [Indexed: 12/25/2022] Open
Abstract
Background Interstitial pneumonia in connective tissue diseases (CTD-IP) featuring inflammation and fibrosis is a leading cause of death in CTD-IP patients. The related autoimmune lung injury and disturbed self-healing process make conventional anti-inflammatory drugs ineffective. Equipped with unique immunoregulatory and regenerative properties, mesenchymal stem cells (MSCs) may represent a promising therapeutic agent in CTD-IP. In this study, we aim to define the immunopathology involved in pulmonary exacerbation during autoimmunity and to determine the potential of MSCs in correcting these disorders. Methods Lung and blood specimens, bronchoalveolar lavage fluid cells collected from CTD-IP patients, and human primary lung fibroblasts (HLFs) from patients pathologically diagnosed with usual interstitial pneumonia (UIP) and healthy controls were analyzed by histology, flow cytometry and molecular biology. T cell subsets involved in the process of CTD-IP were defined, while the regulatory functions of MSCs isolated from the bone marrow of normal individuals (HBMSCs) on cytotoxic T cells and CTD-UIP HLFs were investigated in vitro. Results Higher frequencies of cytotoxic T cells were observed in the lung and peripheral blood of CTD-IP patients, accompanied with a reduced regulatory T cell (Treg) level. CTD-UIP HLFs secreted proinflammatory cytokines in combination with upregulation of α-smooth muscle actin (α-SMA). The addition of HBMSCs in vitro increased Tregs concomitant with reduced cytotoxic T cells in an experimental cell model with dominant cytotoxic T cells, and promoted Tregs expansion in T cell subsets from patients with idiopathic pulmonary fibrosis (IPF). HBMSCs also significantly decreased proinflammatory chemokine/cytokine expression, and blocked α-SMA activation in CTD-UIP HLFs through a TGF-β1-mediated mechanism, which modulates excessive IL-6/STAT3 signaling leading to IP-10 expression. MSCs secreting a higher level of TGF-β1 appear to have an optimal anti-fibrotic efficacy in BLM-induced pulmonary fibrosis in mice. Conclusions Impairment of TGF-β signal transduction relevant to a persistent IL-6/STAT3 transcriptional activation contributes to reduction of Treg differentiation in CTD-IP and to myofibroblast differentiation in CTD-UIP HLFs. HBMSCs can sensitize TGF-β1 downstream signal transduction that regulates IL-6/STAT3 activation, thereby stimulating Treg expansion and facilitating anti-fibrotic IP-10 production. This may in turn block progression of lung fibrosis in autoimmunity. Electronic supplementary material The online version of this article (doi:10.1186/s13287-016-0319-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ming Liu
- State Key Laboratory of Respiratory Diseases, Guangzhou Institute of Respiratory Diseases, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, P. R. China
| | - Xiansheng Zeng
- State Key Laboratory of Respiratory Diseases, Guangzhou Institute of Respiratory Diseases, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, P. R. China.,Department of Respiratory Medicine, Xiangyang Central Hospital, Xiangyang, Hubei province, P. R. China
| | - Junli Wang
- State Key Laboratory of Respiratory Diseases, Guangzhou Institute of Respiratory Diseases, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, P. R. China
| | - Zhiping Fu
- State Key Laboratory of Respiratory Diseases, Guangzhou Institute of Respiratory Diseases, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, P. R. China
| | - Jinsong Wang
- State Key Laboratory of Respiratory Diseases, Guangzhou Institute of Respiratory Diseases, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, P. R. China.,Shenzhen Beike Cell Engineering Research Institute, Shenzhen, P. R. China
| | - Muyun Liu
- Shenzhen Beike Cell Engineering Research Institute, Shenzhen, P. R. China
| | - Dunqiang Ren
- State Key Laboratory of Respiratory Diseases, Guangzhou Institute of Respiratory Diseases, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, P. R. China
| | - Baodan Yu
- State Key Laboratory of Respiratory Diseases, Guangzhou Institute of Respiratory Diseases, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, P. R. China
| | - Lixia Zheng
- State Key Laboratory of Respiratory Diseases, Guangzhou Institute of Respiratory Diseases, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, P. R. China
| | - Xiang Hu
- Shenzhen Beike Cell Engineering Research Institute, Shenzhen, P. R. China
| | - Wei Shi
- Developmental Biology and Regenerative Medicine Program, Department of Surgery, The Saban Research Institute of Children's Hospital Los Angeles, University of Southern California Keck School of Medicine, Los Angeles, CA, USA
| | - Jun Xu
- State Key Laboratory of Respiratory Diseases, Guangzhou Institute of Respiratory Diseases, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, P. R. China.
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Pan L, Xie X, Liu D, Ren D, Guo Y. Obstructive sleep apnoea and risks of all-cause mortality: preliminary evidence from prospective cohort studies. Sleep Breath 2016; 20:345-53. [PMID: 26779904 DOI: 10.1007/s11325-015-1295-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 11/22/2015] [Accepted: 12/08/2015] [Indexed: 12/16/2022]
Abstract
PURPOSE A meta-analysis of prospective cohort studies was conducted to clarify the association between obstructive sleep apnoea (OSA) and future risk of all-cause mortality. METHODS Eligible studies were identified by searching the PubMed and EMBASE databases up to July 2015. Pooled hazard ratios (HRs) and their corresponding 95 % confidence intervals (CIs) were calculated to estimate the association between OSA and risk of all-cause mortality. Sources of heterogeneity were identified by subgroup and meta-regression analyses. RESULTS Twelve prospective cohort studies involving 34,382 participants were included in this meta-analysis. The pooled HR of all-cause mortality was 1.262 (95 % CI 1.093-1.431) with significant heterogeneity. Subgroup analyses indicated that the pooled HRs of all-cause mortality in patients with mild, moderate and severe OSA were 0.945 (95 % CI 0.810-1.081), 1.178 (95 % CI 0.978-1.378) and 1.601 (95 % CI 1.298-1.902), respectively. OSA severity could be a possible sources of heterogeneity. Existing publication bias produced a minor contribution to effect size. CONCLUSION Severe, but not mild to moderate, OSA is significantly associated with increased risk of all-cause mortality.
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Affiliation(s)
- Lei Pan
- Department of Respiratory and Critical Care Medicine, Binzhou Medical University Hospital, Binzhou, Shandong, 256603, China
| | - Xiaomei Xie
- Department of Radiotherapy, Xuzhou Central Hospital, The Affiliated Xuzhou Hospital of Medical College of Southeast University, Xuzhou, Jiangsu, 221009, China
| | - Dayue Liu
- Department of Respiratory Medicine, XuZhou Central Hospital, The Affiliated XuZhou Hospital of Medical College of Southeast University, 199 South Jiefang Road, Xuzhou, Jiangsu, 221009, China
| | - Dunqiang Ren
- Department of Respiratory Medicine, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, 266003, China
| | - Yongzhong Guo
- Department of Respiratory Medicine, XuZhou Central Hospital, The Affiliated XuZhou Hospital of Medical College of Southeast University, 199 South Jiefang Road, Xuzhou, Jiangsu, 221009, China.
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Kim JM, Ren D, Reverter A, Roura E. A regulatory gene network related to the porcine umami taste receptor (TAS1R1/TAS1R3). Anim Genet 2015; 47:114-9. [PMID: 26554867 DOI: 10.1111/age.12374] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/03/2015] [Indexed: 11/28/2022]
Abstract
Taste perception plays an important role in the mediation of food choices in mammals. The first porcine taste receptor genes identified, sequenced and characterized, TAS1R1 and TAS1R3, were related to the dimeric receptor for umami taste. However, little is known about their regulatory network. The objective of this study was to unfold the genetic network involved in porcine umami taste perception. We performed a meta-analysis of 20 gene expression studies spanning 480 porcine microarray chips and screened 328 taste-related genes by selective mining steps among the available 12,320 genes. A porcine umami taste-specific regulatory network was constructed based on the normalized coexpression data of the 328 genes across 27 tissues. From the network, we revealed the 'taste module' and identified a coexpression cluster for the umami taste according to the first connector with the TAS1R1/TAS1R3 genes. Our findings identify several taste-related regulatory genes and extend previous genetic background of porcine umami taste.
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Affiliation(s)
- J M Kim
- Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation Hartley Teakle 83, The University of Queensland, St Lucia, Queensland, 4072, Australia
| | - D Ren
- Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation Hartley Teakle 83, The University of Queensland, St Lucia, Queensland, 4072, Australia
| | - A Reverter
- CSIRO Agriculture Flagship, Queensland Bioscience Precinct, 306 Carmody Road, St Lucia, Queensland, 4067, Australia
| | - E Roura
- Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation Hartley Teakle 83, The University of Queensland, St Lucia, Queensland, 4072, Australia
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Abstract
Adhesion of microbes, such as bacteria and fungi, to surfaces and the subsequent formation of biofilms cause multidrug-tolerant infections in humans and fouling of medical devices. To address these challenges, it is important to understand how material properties affect microbe-surface interactions and engineer better nonfouling materials. Here we review the recent progresses in this field and discuss the main challenges and opportunities. In particular, we focus on bacterial biofilms and review the effects of surface energy, charge, topography, and stiffness of substratum material on bacterial adhesion. We summarize how these surface properties influence oral biofilm formation, and we discuss the important findings from nondental systems that have potential applications in dental medicine.
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Affiliation(s)
- F. Song
- Department of Biomedical and Chemical Engineering, Syracuse University, Syracuse, NY, USA
- Syracuse Biomaterials Institute, Syracuse University, Syracuse, NY, USA
| | - H. Koo
- Department of Orthodontics and Divisions of Pediatric Dentistry & Community Oral Health, University of Pennsylvania, Philadelphia, PA, USA
| | - D. Ren
- Department of Biomedical and Chemical Engineering, Syracuse University, Syracuse, NY, USA
- Syracuse Biomaterials Institute, Syracuse University, Syracuse, NY, USA
- Department of Civil and Environmental Engineering, Syracuse University, Syracuse, NY, USA
- Department of Biology, Syracuse University, Syracuse, NY, USA
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Sherwood PR, Weimer J, Price T, Ren D, Lieberman F, Donovan H. P18.09 * STRESS INDUCED IMMUNE DYSFUNCTION IN NEURO-ONCOLOGY CAREGIVERS. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou174.433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Jhun H, Chaikriangkrai K, Gudsoorkar V, Sinha N, Kaleekal T, Mankidy B, Scheinin S, Loebe M, Bruckner B, Ren D, Jyothula S. Prevalence of Gastroparesis After Lung Transplantation: A Single Center Study. J Heart Lung Transplant 2014. [DOI: 10.1016/j.healun.2014.01.772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Ren D, Cai Z, Song J, Wu Z, Zhou S. dsRNA uptake and persistence account for tissue-dependent susceptibility to RNA interference in the migratory locust, Locusta migratoria. Insect Mol Biol 2014; 23:175-184. [PMID: 24308607 DOI: 10.1111/imb.12074] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
RNA interference (RNAi) by introducing double-stranded RNA (dsRNA) is a powerful approach to the analysis of gene function in insects; however, RNAi responses vary dramatically in different insect species and tissues, and the underlying mechanisms remain poorly understood. The migratory locust, a destructive insect pest and a hemimetabolic insect with panoistic ovaries, is considered to be a highly susceptible species to RNAi via dsRNA injection, but its ovary appears to be completely insensitive. In the present study, we showed that dsRNA persisted only briefly in locust haemolymph. The ovariole sheath was permeable to dsRNA, but injected dsRNA was not present in the follicle cells and oocytes. The lack of dsRNA uptake into the follicle cells and oocytes is likely to be the primary factor that contributes to the ineffective RNAi response in locust ovaries. These observations provide insights into tissue-dependent variability of RNAi and help in achieving successful gene silencing in insensitive tissues.
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Affiliation(s)
- D Ren
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
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Ai J, Huang Y, Xu K, Ren D, Qi X, Ji H, Ge A, Dai Q, Li J, Bao C, Tang F, Shi G, Shen T, Zhu Y, Zhou M, Wang H. Case-control study of risk factors for human infection with influenza A(H7N9) virus in Jiangsu Province, China, 2013. Euro Surveill 2013; 18:20510. [PMID: 23827526 DOI: 10.2807/1560-7917.es2013.18.26.20510] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
We describe a case-control study performed in Jiangsu, China, to evaluate risk factors for human infection with novel avian influenza A(H7N9) virus. Twenty-five cases and 93 controls matched by age, sex, and location were included in the study. Direct contact with poultry or birds in the two weeks before illness onset, chronic medical conditions (hypertension excluded), and environment-related exposures were significantly associated with A(H7N9) infection.
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Affiliation(s)
- J Ai
- Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, Jiangsu, China
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Gong J, Ren D, Luo Y, Lai W, Li J, Wang W. [Effects of dexamethasone on expressions of IL-21 and its receptor in lungs of experimental asthma mice]. Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi 2013; 29:561-564. [PMID: 23746235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
OBJECTIVE To observe the expressions of IL-21 and its receptor (IL-21R) in the lungs of chronic asthmatic mice, and investigate the effects of dexamethasone (Dex) on their expressions. METHODS Thirty-three specific pathogen free (SPF) BALB/c female mice were randomly divided into control group, asthmatic group and Dex treated group, 11 mice each group. The asthma model mice were induced by ovalbumin (OVA) with the classic method. The airway inflammation was evaluated by HE staining. The thicknesses of bronchial wall (Wat/Pbm) and airway smooth muscle (Wam/Pbm) were measured. The expressions of IL-21 and IL-21R proteins were detected by immunohistochemistry and Western blotting. RESULTS Compared with the control group, the Wat/Pbm and Wam/Pbm in the asthmatic group significantly increased (P<0.01). The indexes in the Dex group were significantly reduced as compared with those in the asthmatic group (P<0.01). The expressions of IL-21 and IL-21R proteins in the asthmatic group were higher than those in the control group (P<0.05), but they were lower in the Dex group than in the asthmatic group (P<0.05). CONCLUSION The enhanced expressions of IL-21 and IL-21R in the asthmatic mice are found, and Dex can inhibit the expressions of IL-21 and IL-21R in the lung tissues of asthmatic mice.
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Affiliation(s)
- Jing Gong
- Department of Respiratory Diseases, Nangfang Hospital, Southern Medical University, Guangzhou 510515, China.
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Guo Y, Pan L, Ren D, Xie X. Impact of continuous positive airway pressure on C-reactive protein in patients with obstructive sleep apnea: a meta-analysis. Sleep Breath 2012; 17:495-503. [PMID: 22664769 DOI: 10.1007/s11325-012-0722-2] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Revised: 05/16/2012] [Accepted: 05/21/2012] [Indexed: 12/23/2022]
Abstract
PURPOSE C-reactive protein (CRP) is associated with the development of obstructive sleep apnea (OSA) and cardiovascular diseases. Continuous positive airway pressure (CPAP) is an effective treatment for OSA, but the impact of CPAP therapy on CRP levels in patients with OSA remains unclear. To obtain this information, we performed a meta-analysis to determine whether effective CPAP therapy could reduce serum CRP levels. METHODS A comprehensive literature search was performed to identify studies that examined the impact of CPAP on serum CRP levels in OSA patients who were treated with CPAP for at least 4 weeks. Standardized mean difference (SMD) was used to analyze the summary estimates for CPAP therapy. RESULTS Fourteen self-control design studies involving 1199 patients with OSA met the inclusion criteria. Meta-analysis indicated that the overall SMD for the CRP levels was 0.64 units (95 % confidence interval (CI) 0.40 to 0.88) before and after CPAP therapy; test for overall effect z = 5.27 (P = 0.000). Subgroup analysis showed that evolution of CRP decreased non-significantly in less than 3 months (SMD, 0.26, 95 % CI -0.08 to 0.60, P = 0.138), significantly decreased after 3 months (SMD, 0.68, 95 % CI 0.34 to 1.02, P = 0.000), and further declined after 6 months (SMD, 0.74, 95 % CI 0.43 to 1.05, P = 0.000). CONCLUSIONS The systemic inflammation, as measured by CRP, was present and significantly reduced by effective CPAP therapy in patients with OSA. The use of CRP levels may be clinically recognized as a valuable predictor for OSA treatment monitoring.
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Affiliation(s)
- Yongzhong Guo
- Guangzhou Institute of Respiratory Diseases, State Key Lab of Respiratory Diseases, The First Affiliated Hospital, Guangzhou Medical College, 151 Yanjiang Road, Guangzhou, Guangdong 510120, China.
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Loebe M, Ren D, Rodriguez L, La Francesca S, Bismuth J, Lumsden A. Acute and chronic thoracic aortic disease: surgical considerations. HSR Proc Intensive Care Cardiovasc Anesth 2012; 4:243-50. [PMID: 23439669 PMCID: PMC3563558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Acute thoracic aortic aneurysm is one of the most life-threatening vascular disorders recognized to date. The majority of these aortic ruptures rapidly end in mortality, with 50% of patients suffering death before reaching the hospital. Thus, acute management through surgical intervention is often indicated, especially in cases of ascending aortic rupture. Physical examination is critical in making the diagnosis, as clinical signs and symptoms often vary depending on the location of the dissection. Clinicians should have a low threshold for including thoracic aortic dissection in their differential diagnosis, especially when a patient presents with acute onset chest or back pain. In this report, we discuss the different categories of aortic dissections and the current treatment modalities for each. These include endovascular aortic repair, which has become a viable treatment modality in certain cases of type B dissection. Offering a less invasive approach, the technique known as thoracic endovascular repair currently affords a treatment option to a patient population who would have otherwise been deemed non-surgical candidates. Hybrid thoracic endovascular aortic repair has also become a pertinent surgical technique, and successful outcomes have been demonstrated when it is employed to repair ascending aortic aneurysms. We also describe our Acute Aortic Treatment Center, a rapid multicentric triage system for the management of acute aortic pathologies, which has resulted in significant improvements in patient outcomes.
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Deng Y, Cai Y, Xiao J, Ling J, Fang L, Huang M, Peng J, Ren D, Lan P, Wang J. A pilot study of FOLFOX with or without radiation in treating patients with locally advanced rectal cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e14147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Lan H, Zhong H, Gao Y, Ren D, Chen L, Zhang D, Lai W, Xu J, Luo Y. The PTEN tumor suppressor inhibits human airway smooth muscle cell migration. Int J Mol Med 2011; 26:893-9. [PMID: 21042784 DOI: 10.3892/ijmm_00000539] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Airway remodeling in asthma is characterized by increased airway smooth muscle (ASM) mass, accompanied by cell migration. It is well known that the proliferation and migration of ASM cells (ASMCs) play a key role in airway remodeling, but the precise mechanism modulating these cellular events remains unclear. One of the genes most likely to be involved in this process is the phosphatase and tensin homolog (PTEN) gene, whose deletion from chromosome 10 can inhibit the proliferation and migration of many cell types. In this study, we investigated the effects of PTEN on human ASMCs. The cells were infected with recombinant adenovirus containing wild-type PTEN cDNA (Ad-PTEN), and the results were compared with those from the uninfected cells and those infected with the GFP-labeled adenovirus vector. Cell proliferation was measured using the MTT method. Cell migration was determined by wound-healing and transwell assays. The expressions of PTEN, phospho-Akt, Akt, phospho-ERK1/2, ERK1/2, phospho-focal adhesion kinase (FAK) and FAK, were examined by Western blot analysis. The results show that PTEN is expressed endogenously in ASMCs, and that Ad-PTEN inhibits the proliferation and migration of these cells. In addition, the Ad-PTEN treatment decreased the phosphorylation of Akt and FAK but not that of ERK1/2. In conclusion, this study demonstrates that PTEN overexpression inhibits the proliferation and migration of human ASMCs by down-regulating the activity of the Akt and FAK signaling pathways.
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Affiliation(s)
- Haibing Lan
- Department of Respiratory Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, P.R. China
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Ren D, Xing Y, Lin M, Wu Y, Li K, Li W, Yang S, Guo T, Ren J, Ma J, Lan L, Huang L. Evaluations of boar gonad development, spermatogenesis with regard to semen characteristics, libido and serum testosterone levels based on large White Duroc x Chinese Erhualian crossbred boars. Reprod Domest Anim 2010; 44:913-9. [PMID: 19000221 DOI: 10.1111/j.1439-0531.2008.01117.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Chinese Erhualian pigs are known for prolificacy with distinct reproductive traits compared with Western commercial breeds. In this study, a four-generation intercross resource population was constructed using White Duroc boars and Chinese Erhualian sows as founder animals, and a total of 14 male reproductive traits were recorded in 411 F2/F3 boars including the testis and epididymis weights, the seminiferous tubular diameter and spermatogenesis at 60, 90 and 300 days of age, semen characteristics, serum testosterone concentration and libido level at 300 days of age. The White Duroc-Erhualian boars showed remarkable segregations in the traits measured except for the seminiferous tubular diameter and had high ratio (13.9%) of the abnormality of spermatogenesis, providing a good experimental population for detecting quantitative trait loci affecting these male reproductive traits. Furthermore, the correlations among nine male reproductive traits at 300 days of age indicated that the testis weight and the body weight were strongly correlated with the sperm production, supporting the two traits as important parameters for boar selection to increase sperm production and ultimately improve boar fertility. The libido level in the White Duroc-Erhualian boars that was evaluated by a new and easily recorded scoring system showed a significant correlation with serum testosterone concentration. Yet, both libido and serum testosterone concentration were not correlated with the sperm production. Results of this study provided new information on the male reproductive physiology and genetics in Chinese Erhualian and White Duroc boars.
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Affiliation(s)
- D Ren
- Key Laboratory for Animal Biotechnology of Jiangxi Province and the Ministry of Agriculture of China, Jiangxi Agricultural University, Nanchang 330045, China
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Zhu H, Chen H, Zhong Y, Ren D, Qian Y, Tang H, Zhu Y. Determination of Trace Inorganic Anions in Weak Acids by Single-Pump Column-Switching Ion Chromatography. J Chromatogr Sci 2010; 48:553-8. [DOI: 10.1093/chromsci/48.7.553] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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