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Vermeulen R, Lan Q, Qu Q, Linet MS, Zhang L, Li G, Portengen L, Vlaanderen J, Sungkyoon K, Hayes RB, Yin S, Smith MT, Rappaport SM, Rothman N. Nonlinear low dose hematotoxicity of benzene; a pooled analyses of two studies among Chinese exposed workers. Environ Int 2023; 177:108007. [PMID: 37290291 DOI: 10.1016/j.envint.2023.108007] [Citation(s) in RCA: 2] [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] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Revised: 05/23/2023] [Accepted: 05/29/2023] [Indexed: 06/10/2023]
Abstract
BACKGROUND Impairment of the hematopoietic system is one of the primary adverse health effects from exposure to benzene. We previously have shown that exposure to benzene at low levels (<1 ppm) affects the blood forming system and that these effects were proportionally stronger at lower versus higher levels of benzene exposure. This observation is potentially explained by saturation of enzymatic systems. METHODS Here we extend these analyses by detailed modeling of the exposure response association of benzene and its major metabolites (i.e. catechol, muconic acid, phenol, and hydroquinone) on peripheral white blood cell (WBC) counts and its major cell-subtypes (i.e. granulocytes, lymphocytes, and monocytes) using two previously published cross-sectional studies among occupationally exposed Chinese workers. RESULTS Supra-linear exposure response associations were observed between air benzene concentrations (range ∼ 0.1 - 100 ppm) and WBC counts and its cell-subtypes, with a larger than proportional decrease in cell counts at lower than at higher levels of benzene exposure. The hematotoxicity associations were largely similar in shape when the analyses were repeated with benzene urinary metabolites suggesting that enzymatic saturation is not a full explanation of the observed non-linearity with WBC endpoints. DISCUSSION We hypothesize that the flattening of the exposure response curve especially at higher benzene exposure levels may reflect a response by the bone marrow to maintain hematopoietic homeostasis. Toxicity to the bone marrow and an induced hyper-proliferative response could both contribute to risk of subsequently developing a hematopoietic malignancy. Additional work is needed to explore this hypothesis.
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Affiliation(s)
- Roel Vermeulen
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands
| | - Qing Lan
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, MD 20892, United States
| | - Qingshan Qu
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, NY, United States
| | - Martha S Linet
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, MD 20892, United States
| | - Luoping Zhang
- School of Public Health, University of California, Berkeley, CA 94720, United States
| | - Guilan Li
- Chinese Center for Disease Control and Prevention, Beijing, China
| | - Lutzen Portengen
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands
| | - Jelle Vlaanderen
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands
| | - Kim Sungkyoon
- School of Public Health, Seoul National University, Seoul, Republic of Korea
| | | | - Songnian Yin
- Chinese Center for Disease Control and Prevention, Beijing, China
| | - Martyn T Smith
- School of Public Health, University of California, Berkeley, CA 94720, United States
| | - Stephen M Rappaport
- School of Public Health, University of California, Berkeley, CA 94720, United States
| | - Nathaniel Rothman
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, MD 20892, United States
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Qu Q, Sun JY, Kan JY, Wang C, Wang RX. [Research progress in the application of artificial intelligence on evaluating the electrocardiogram]. Zhonghua Xin Xue Guan Bing Za Zhi 2021; 49:1146-1151. [PMID: 34775727 DOI: 10.3760/cma.j.cn112148-20210422-00365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Q Qu
- Department of Cardiology, Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi 214023, China
| | - J Y Sun
- Department of Cardiology, Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi 214023, China
| | - J Y Kan
- Department of Cardiology, Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi 214023, China
| | - C Wang
- Department of Cardiology, First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - R X Wang
- Department of Cardiology, Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi 214023, China
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Shangguan CF, Jiang M, Yang C, Lou GY, Li YT, Qu Q. Clinical efficacy of palbociclib-based therapy in women with HR+/HER2- metastatic breast cancer in the real-world setting for Chinese women: a comparison with the IRIS study. Eur Rev Med Pharmacol Sci 2021; 25:6138-6148. [PMID: 34661274 DOI: 10.26355/eurrev_202110_26892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE This retrospective study aimed to explore the clinical efficacy of palbociclib with endocrine therapy (ET) in women with hormone receptor-positive (HR+)/human epidermal growth factor receptor 2-negative (HER2-) metastatic breast cancer in real-world practice. PATIENTS AND METHODS This retrospective study analyzed the medical records of patients to determine treatment outcomes. Progression-free survival (PFS) curves were generated using log-rank tests with the Kaplan-Meier method. Treatment outcomes in Chinese patients were compared with those in patients from the USA, Argentina, Canada, and Europe in the IRIS study. RESULTS In total, 69 patients were included in this study. The median PFS was 12.8 months (95% confidence interval: 10.1-15.5). A longer PFS was observed for patients with bone-only metastases, no liver metastases, no previous palliative chemotherapy, no previous palliative ET, and ET sensitivity. The overall response rate was 10.1%, and the clinical benefit rate was 78.3%. Nineteen patients (27.5%) received a reduced dose of palbociclib according to the decision of their physicians. Dose reduction did not affect the clinical efficacy of the combined treatment. Compared with those in the IRIS study, Chinese patients receiving palbociclib-based treatment were younger, and they had fewer bone-only metastases and more visceral and liver metastases. The clinical benefit rate and overall response rate for Chinese patients were lower than those observed for the patients in the IRIS study. CONCLUSIONS ET combined with palbociclib treatment was effective and well-tolerated in HR+/HER2- metastatic breast cancer patients in the real-world setting. Earlier use of palbociclib-ET was associated with more clinical benefits in HR+/HER2- metastatic breast cancer.
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Affiliation(s)
- C-F Shangguan
- Department of Oncology, Ruijin Hospital Shanghai Jiaotong University School of Medicine, Shanghai, P.R. China.
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Xue W, Wang C, Chen J, Sun X, Wu X, Peng L, Chen Z, Qu Q, Zhang X, Fu Y, Dong Z, Chen Z, Feng G, Lin T, Men T, Yu L, Sun Q, Zhao Y, Zhou J, Zeng L, Zhao M, Tan J, Ye Q, Shi B, Ming Y, Zhu T, Sui W, Huang C, Fu Y. A prediction model of delayed graft function in deceased donor for renal transplant: a multi-center study from China. Ren Fail 2021; 43:520-529. [PMID: 33719820 PMCID: PMC7971200 DOI: 10.1080/0886022x.2021.1895838] [Citation(s) in RCA: 3] [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] [Indexed: 02/08/2023] Open
Abstract
Background Kidneys obtained from deceased donors increase the incidence of delayed graft function (DGF) after renal transplantation. Here we investigated the influence of the risk factors of donors with DGF, and developed a donor risk scoring system for DGF prediction. Methods This retrospective study was conducted in 1807 deceased kidney donors and 3599 recipients who received donor kidneys via transplants in 29 centers in China. We quantified DGF associations with donor clinical characteristics. A donor risk scoring system was developed and validated using an independent sample set. Results The incidence of DGF from donors was 19.0%. Six of the donor characteristics analyzed, i.e., age, cause of death, history of hypertension, terminal serum creatinine, persistence of hypotension, and cardiopulmonary resuscitation (CPR) time were risk factors for DGF. A 49-point scoring system of donor risk was established for DGF prediction and exhibited a superior degree of discrimination. External validation of DGF prediction revealed area under the receiver-operating characteristic (AUC) curves of 0.7552. Conclusions Our study determined the deceased donor risk factors related to DGF after renal transplantation pertinent to the Chinese cohort. The scoring system developed here had superior diagnostic significance and consistency and can be used by clinicians to make evidence-based decisions on the quality of kidneys from deceased donors and guide renal transplantation therapy.
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Affiliation(s)
- Wujun Xue
- The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.,Institute of Organ Transplantation of Xi'an Jiaotong University, Xi'an, China
| | - Changxi Wang
- The First Affiliated Hospital Of Sun Yat-sen University, Guangzhou, China
| | - Jianghua Chen
- First Affiliated Hospital Of Zhejiang University Medical School, Hangzhou, China
| | - Xuyong Sun
- The Chinese People's Liberation Army 923 Hospital, Nanjing, China
| | - Xiaotong Wu
- Second People's Hospital of Shanxi Province, Taiyuan, China
| | - Longkai Peng
- The Second Xiangya Hospital Of Central South University, Changsha, China
| | - Zhishui Chen
- Tongji Hospital Affiliated to Tongji Medical College Huazhong University of Science and Technology, Wuhan, China
| | - Qingshan Qu
- People's Hospital of Zhengzhou City, Zhengzhou, China
| | - Xiaodong Zhang
- Beijing Chaoyang Hospital Affiliated to The Capital University of Medical Sciences, Beijing, China
| | - Yaowen Fu
- Bethune First Hospital of Jilin University, Changchun, China
| | - Zhen Dong
- The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Zheng Chen
- The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Guiwen Feng
- The First Affiliated Hospital Of Zhengzhou University, Zhengzhou, China
| | - Tao Lin
- West China Hospital of Sichuan University, Chengdu, China
| | - Tongyi Men
- The First Affiliated Hospital of the First Shandong Medical University, Jinan, China
| | - Lixin Yu
- Nanfang Hospital of Southern Medical University, Guangzhou, China
| | - Qiquan Sun
- The Third Hospital Affiliated of Sun-Yet University, Guangzhou, China
| | - Yongheng Zhao
- Kunming City First People's Hospital, Kunming, China
| | | | - Li Zeng
- Changhai Hospital of Naval Military Medical University, Shanghai, China
| | - Ming Zhao
- Zhujiang Hospital, of Southern Medical University, Guangzhou, China
| | - Jianming Tan
- The 900 Hospital of Joint Logistic Support Department of PLA, Fuzhou, China
| | - Qifa Ye
- Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Bingyi Shi
- The Eighth Medical Center of People's Liberation Army General Hospital, Beijing, China
| | - Yingzi Ming
- The Third Xiangya Hospital of Central South University, Changsha, China
| | - Tongyu Zhu
- Zhongshan Hospital Affiliated to Fudan University, Shanghai, China
| | - Weiguo Sui
- The 924 Hospital of Joint Logistic Support Department of PLA, Guilin, China
| | - Chibing Huang
- The Second Affiliated Hospital of Army Military Medical University, Chongqing, China
| | - Yingxin Fu
- Tianjin First Central Hospital, Tianjin, China
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Lv S, Qu Q. Mechanism of Propolis Affecting Oral Flora Structure and Immune Microenvironment of Oral Mucositis in Patients with Leukemia Undergoing Chemotherapy. Indian J Pharm Sci 2021. [DOI: 10.36468/pharmaceutical-sciences.spl.360] [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: 11/22/2022] Open
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Hui M, Xu Y, Zhang N, He XD, Qu Q. [Clinical characteristics of abdominal solitary fibrous tumor: an analysis of 18 cases]. Zhonghua Yi Xue Za Zhi 2018; 98:1439-1442. [PMID: 29804409 DOI: 10.3760/cma.j.issn.0376-2491.2018.18.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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 summarize the clinical manifestations, pathological features, diagnosis, and treatment of abdominal solitary fibrous tumor (SFT). Methods: The data of clinical manifestations, pathological features, diagnosis, and treatment of 18 patients with abdominal SFT admitted to Department of General Surgery, Peking Union Medical College Hospital between January 2000 and December 2016 were retrospectively reviewed. Results: Abdominal mass was first presented in 14 patients. The blood routine, liver, kidney, and coagulation function were normal in all the patients. Tumor markers were abnormal in 4 cases. Most SFT showed hypoechoic mass with regular shape under ultrasound. CT findings differed among the cases. All the 18 patients underwent surgical treatment, and the diagnosis was proved by the postoperative histopathology. SFT differed in general morphology. The positive rate of Ki-67, smooth muscle actin (SMA), CD34, and S-100 was high under immunohistochemistry. Conclusions: Early diagnosis of abdominal SFT is difficult, leading to a low preoperative diagnosis rate. Complete removal of the tumor is the only reliable method of radical treatment.
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Affiliation(s)
- M Hui
- Department of General Surgery, Peking Union Medical College Hospital, Beijing 100730, China
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Gu D, Ding Y, Zhao Y, Miao S, Qu Q. Positively increased visceral adiposity index in hyperuricemia free of metabolic syndrome. Lipids Health Dis 2018; 17:101. [PMID: 29734946 PMCID: PMC5938806 DOI: 10.1186/s12944-018-0761-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [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: 12/12/2017] [Accepted: 04/26/2018] [Indexed: 02/07/2023] Open
Abstract
Background Visceral adiposity index (VAI) was closely associated with metabolic syndrome, however almost no research focused on VAI and hyperuricemia, therefore, this study was conducted to determine the relationship of VAI and hyperuricemia free of metabolic syndrome and estimate the power of VAI as predictor for hyperuricemia. Methods A cross-sectional research coming from a health check-up program was conducted. All participants were divided into four groups according to VAI quartiles. A multivariate logistic analysis was used to analyze the relationship between the quartiles and hyperuricemia. A receiver operating characteristic (ROC) curve analysis was used to evaluate the accuracy of predictions for hyperuricemia. Results VAI was independent risk factor of hyperuricemia. The ORs of which in the upper quartile were 3.077 (95%CI 1.78-5.293), P = 0.000, in model 1, after adjusting for age, systolic blood pressure, diastolic blood pressure, heart rate, fast plasma glucose, serum creatinine, triglyceride, total cholesterol, high density lipoprotein cholesterol, and low density lipoprotein cholesterol; and 3.041 (95CI 1.767-5.233), P = 0.000, in model 2, after adjusting for the above plus physical activity, diet, smoking habits, alcohol consumption, hypertension and diabetes history. The area under the ROC curve (AUC) value of VAI was 0.618 (95%CI 0.572-0.665), P = 0.000; it was higher than WC, which was 0.556 (95%CI 0.508-0.604), P = 0.024, for hyperuricemia. Conclusions VAI was associated with hyperuricemia among individuals free of metabolic syndrome, and also a powerful indicator.
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Affiliation(s)
- Dongfeng Gu
- Department of Nephrology and Transplantation Center, The People's Hospital of Zhengzhou, Affiliated with Southern Medical University, Zhengzhou, 450003, People's Republic of China.
| | - Yanan Ding
- Division of Cardiovascular Medicine, The People's Hospital of Zhengzhou, Affiliated with Southern Medical University, Zhengzhou, 450003, People's Republic of China
| | - Yunfeng Zhao
- Department of Nephrology and Transplantation Center, The People's Hospital of Zhengzhou, Affiliated with Southern Medical University, Zhengzhou, 450003, People's Republic of China
| | - Shuzhai Miao
- Department of Nephrology and Transplantation Center, The People's Hospital of Zhengzhou, Affiliated with Southern Medical University, Zhengzhou, 450003, People's Republic of China
| | - Qingshan Qu
- Department of Nephrology and Transplantation Center, The People's Hospital of Zhengzhou, Affiliated with Southern Medical University, Zhengzhou, 450003, People's Republic of China
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9
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Abstract
AIM To study the relationship of visceral adiposity index (VAI) and prediabetes and the power of which in predicting of prediabetes. METHODS A cross-sectional epidemiological survey was conducted. All participants were divided into four groups: VAI and WC (both are normal), VAI↑ and WC (postcritical VAI and normal WC), VAI and WC↑ (Normal VAI and postcritical WC), and VAI↑ and WC↑ (postcritical VAI and postcritical WC). A multivariate logistic analysis was used to analyze the relationship between the four groups and prediabetes, and diabetes. A receiver operating characteristic (ROC) curve analysis was used to evaluate the accuracy of predictions for prediabetes and diabetes. RESULTS Both VAI and WC were independent risk factors of Prediabetes. The ORs for Prediabetes in the VAI↑&WC group were 1.641 (95%CI 1.146-2.349), P=0.007, in males, in Model 2. The ORs for Prediabetes in the VAI&WC↑ group were 1.454 (95%CI 1.055-2.005), P=0.022, in males, in Model 2. The ORs for Prediabetes in the VAI↑&WC group were 2.305 (95%CI 1.623-3.273), P=0.000, in females, in Model 2. The ORs for Prediabetes in the VAI&WC↑ group were 1.997 (95%CI 1.529-2.608), P=0.000, in females, in Model 2. The AUC value of VAI were 0.601 (95%CI 0.568-0.634), P=0.000, in prediabetes of men; which were 0.645 (95%CI 0.618-0.672), P=0.000, in prediabetes women. WC had the highest AUC value of 0.605 (95%CI 0.571-0.638), P=0.000, in prediabetes of men, also had the highest of AUC value of 0.673 (95%CI 0.648-0.697), P=0.000, in prediabetes of women. CONCLUSION VAI was positively associated with prediabetes, and also a usefulindicator of prediabetes.
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Affiliation(s)
- Dongfeng Gu
- Department of Nephrology and Transplantation Center, The People's Hospital of Zhengzhou, Affiliated with Southern Medical University, Zhengzhou 450003, P.R. China
| | - Yanan Ding
- Division of Cardiovascular Medicine, The People's Hospital of Zhengzhou, Affiliated with Southern Medical University, Zhengzhou 450003, P.R. China
| | - Yunfeng Zhao
- Department of Nephrology and Transplantation Center, The People's Hospital of Zhengzhou, Affiliated with Southern Medical University, Zhengzhou 450003, P.R. China
| | - Qingshan Qu
- Department of Nephrology and Transplantation Center, The People's Hospital of Zhengzhou, Affiliated with Southern Medical University, Zhengzhou 450003, P.R. China
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Li F, Du X, Zhang H, Ju T, Chen C, Qu Q, Zhang X, Qi L, Lizée G. Next-generation sequencing of Chinese stage IV lung cancer patients reveals an association between EGFR mutation status and survival outcome. Clin Genet 2016; 91:488-493. [PMID: 27221040 DOI: 10.1111/cge.12809] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [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: 03/30/2016] [Revised: 05/18/2016] [Accepted: 05/20/2016] [Indexed: 12/28/2022]
Abstract
Large-scale genomic characterization of non-small cell lung cancer (NSCLC) has revealed several putative oncogenic driver mutations that may constitute druggable therapeutic targets. However, there are little data to suggest that such gene alterations have clinical relevance. Over 12 consecutive months, tumor biopsy samples from 80 patients with stage IV NSCLC were analyzed for mutations in selected exons of 508 cancer-related genes using next-generation sequencing. From 85 specimens referred for genomic characterization, 80 (94%) specimens were successfully genotyped, and all had identifiable somatic alterations. Epidermal growth factor receptor (EGFR) and TP53 genes contained the highest frequency of observed mutations (65% and 40%, respectively) in the stage IV NSCLC cases. Notably, patients with EGFR mutations showed a significantly shorter survival time compared with patients expressing wild-type EGFR (p = 0.0053). Moreover, of the 32 patients harboring EGFR mutations, EGFR-L858R mutant patients showed a significantly shorter survival time compared with patients with other EGFR mutations (p = 0.036). In conclusion, tumors from stage IV NSCLC patients harbor characteristic gene alterations, of which EGFR L858R in particular appears to be a poor prognostic factor for overall survival.
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Affiliation(s)
- F Li
- Department of Gynecology, Tianjin First Center Hospital, Tianjin, China.,Department of Oncology Research, Tianjin HengJia Biotechnology Development Co, Ltd., Tianjin, China
| | - X Du
- Department of Oncology, Tianjin Beichen Hospital, Tianjin, China
| | - H Zhang
- Department of Integrated Chinese and Western Medicine Treatment Center, Henan Cancer Hospital, Zhengzhou, China
| | - T Ju
- Department of Oncology, Tianjin Beichen Hospital, Tianjin, China
| | - C Chen
- Department of Oncology, Tianjin Beichen Hospital, Tianjin, China
| | - Q Qu
- Department of Gynecology, Tianjin First Center Hospital, Tianjin, China
| | - X Zhang
- Department of Lymphoma & Myeloma, University of Texas M.D. Anderson Cancer Center, Houston, TX, USA
| | - L Qi
- Laboratory of Molecular Neuro-Oncology, Texas Children's Cancer Center, Houston, TX, USA
| | - G Lizée
- Department of Melanoma Medical Oncology, University of Texas M.D. Anderson Cancer Center, Houston, TX, USA.,Department of Immunology, University of Texas M.D. Anderson Cancer Center, Houston, TX, USA
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Zhang Y, Pan Z, Fang J, Qu Q, Jiang X, Li M. Clinical effect of treating renal transplant recipients with percutaneous coronary intervention and its safety. Pak J Med Sci 2016; 32:333-6. [PMID: 27182234 PMCID: PMC4859017 DOI: 10.12669/pjms.322.8952] [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] [Indexed: 11/21/2022] Open
Abstract
Objective: To explore clinical effect of treating acute coronary syndrome (ACS) of renal transplant recipients with percutaneous coronary intervention and its safety. Methods: Forty two renal transplant recipients who were diagnosed with acute coronary syndrome and received percutaneous coronary intervention (PCI) in our hospital were selected. Serum creatinine (Cr) and glomerular filtration rate (GFR) were compared before surgery, 48 ~ 72 hour after surgery and one year after surgery. All patients were followed up. Results: All patients successfully completed PCI. Contrast-induced nephropathy was not found after surgery. Cr and GFR 48 ~ 72 hour after surgery and one year after surgery had no significant differences with that before surgery (P>0.05). The follow up lasted for (61.2±32.2) months averagely. Of 42 cases, 4 cases died, 6 cases were found with nonfatal myocardial infarction, 4 cases were observed with repeat revascularization and 12 cases had accumulative major adverse cardiovascular events (MACE). Conclusion: PCI is proved to be effective in treating renal transplant recipients; no severe complications are found and renal function recovers well after treatment.
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Affiliation(s)
- Yanxuan Zhang
- Yanxuan Zhang, MD. Kidney Disease Center, People's Hospital of Zhengzhou, Henan, 450002, China
| | - Zhenhong Pan
- Zhenhong Pan, B Med. Kidney Disease Center, People's Hospital of Zhengzhou, Henan, 450002, China
| | - Jun Fang
- Jun Fang, MM. Kidney Disease Center, People's Hospital of Zhengzhou, Henan, 450002, China
| | - Qingshan Qu
- Qingshan Qu, B Med. Kidney Disease Center, People's Hospital of Zhengzhou, Henan, 450002, China
| | - Xin Jiang
- Xin Jiang, MM. Kidney Disease Center, People's Hospital of Zhengzhou, Henan, 450002, China
| | - Ming Li
- Ming Li, MM. Kidney Disease Center, People's Hospital of Zhengzhou, Henan, 450002, China
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Qiao L, Qu Q, Jiang X. Clinical significance of quantitative and qualitative detection of BK and JC virus in blood and urine of renal transplantation recipients. Pak J Med Sci 2016; 32:435-9. [PMID: 27182256 PMCID: PMC4859039 DOI: 10.12669/pjms.322.8978] [Citation(s) in RCA: 2] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Objective: To evaluate value of quantitative and qualitative detection of BK virus (BKV) and JC virus (JCV) in timely diagnosing polyomavirus-associated nephropathy (PVAN) occurring inrenal transplantation recipients. Methods: We collected 306 cases of urine specimen and 310 cases of blood specimen from 306 patients who underwent renal transplant. Levels of BKV and JCV in blood and urine were detected using real-time quantitative polymerase chain reaction (PCR). Results: Detection rate of BKV DNA was 33.3% (102/306) in urine and 34.8% (108/310); while that of JCV DNA was 30.7% (94/306) and 33.5% (104/310) respectively. The lowest detectable limit of BCK and JCV detection for patients who underwent renal transplant was 2×103 copies/ml, suggesting high specificity and sensitivity. Conclusion: Real-time quantitative PCR is able to monitor BCV and JCV in renal transplant recipients in a convenient and rapid way, thus it is beneficial for early discovery, diagnosis and treatment of PVAN.
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Affiliation(s)
- Liangwei Qiao
- Liangwei Qiao, Department of Kidney Transplantation, People's Hospital of Zhengzhou, Zhengzhou, Henan, 450000, China
| | - Qingshan Qu
- Qingshan Qu, Department of Kidney Transplantation, People's Hospital of Zhengzhou, Zhengzhou, Henan, 450000, China
| | - Xin Jiang
- Xin Jiang, Department of Kidney Transplantation, People's Hospital of Zhengzhou, Zhengzhou, Henan, 450000, China
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Zhang L, Li Y, Qu Q, Wen K. Myxoid leiomyosarcoma of the uterus: a case report and review of the literature. EUR J GYNAECOL ONCOL 2016; 37:870-872. [PMID: 29943940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A para 1, 52-year-old female was admitted with complaints of irregular vaginal bleeding for the previous six months. Ultrasonography revealed a 4x6-cm tumor extending into the uterine cavity and cervical canal. On vaginal examination, a 2x2-cm tumor protruding from the cervical os was found, and an enlarged uterus was palpated. Vaginal intrauterine tumor resection was performed, and the patient was diagnosed with uterine myxoid leiomyosarcoma. A total abdominal hysterectomy with bilateral salpingo-oophorectomy was performed, followed by postoperative chemotherapy. Twenty-one months after surgery, the patient died of tumor recurrence. Uterine myxoid leiomyosarcoma is an extremely rare variant of uterine sarcoma with a poor prognosis and malignant biological behavior.
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Huang JY, Yang JF, Qu Q, Qu J, Liu F, Liu FE, Xiong T, Lu SH. DNA repair gene XRCC3 variants are associated with susceptibility to glioma in a Chinese population. Genet Mol Res 2015; 14:10569-75. [PMID: 26400288 DOI: 10.4238/2015.september.8.18] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The susceptibility to glioma is not well understood. It has been suggested that the X-ray cross complementing group 3 (XRCC3) gene influences the capacity to repair DNA damage, leading to increased glioma susceptibility. In this study, we evaluated the relationship between XRCC3 mutations and glioma risk. Genotypes were assessed in 389 Chinese glioma patients and 358 healthy controls. XRCC3 Thr241Met (rs861539) and 2 additional polymorphisms, rs3212112 (c.774+19T>G) and rs1799796 (c.562-14A>G), were directly sequenced. The frequency of the rs861539 T allele was significantly lower in the glioma group than in healthy controls [11.1 vs 17.7%, odds ratio = 0.62 (0.48-0.80), P < 0.001]; the frequencies of the CT or CT+TT genotypes differed between groups (18.5 vs 31%, 20.3 vs 33.2%, respectively). The frequency of the rs3212112 G allele was significantly higher in the glioma group than in healthy controls [15.8 vs 5.3%, odds ratio = 2.94 (2.07-4.17), P < 0.001]. The frequencies of the GT or TG+GG genotypes differed between groups (25.4 vs 7.8%, 28.5 vs 9.2%, respectively). This study demonstrates that the rs861539 and rs3212112 polymorphisms in the XRCC3 gene may influence the risk of glioma development in Chinese populations.
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Affiliation(s)
- J Y Huang
- Operation Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - J F Yang
- Department of Neurosurgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Q Qu
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, China
| | - J Qu
- Institute of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China
| | - F Liu
- Department of Neurosurgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - F E Liu
- Department of Neurosurgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - T Xiong
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
| | - S H Lu
- Department of Neurosurgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
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Jiang X, Zhai J, Song D, Qu Q, Li M, Xing L, Miao S. Investigation of the structure of anti-human seminal plasma protein single-chain antibody and its association with linker peptide length. Mol Med Rep 2015; 12:4117-4122. [PMID: 26099852 PMCID: PMC4526083 DOI: 10.3892/mmr.2015.3980] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Accepted: 05/08/2015] [Indexed: 12/03/2022] Open
Abstract
To enhance the activity of seminoprotein single-chain variable fragment (γ-Sm-ScFv) antibodies, modulation of the length of the linker peptide, which connects the variable region of the heavy chain (VH) and the light chain (VL) of single-chain antibodies, was performed in the present study. Homologous modeling of single VH and VL were performed, respectively. Subsequently, modeling of the whole ScFv sequence, which was previously modified with added linkers of different lengths was also performed, and the (Gly4Ser)n peptide chain structure was used as the linker. The similarities between VH and VL prior to and following the addition of the linker were compared by applying the algorithm of protein similarity, based on spherical coordinates layering. In addition, changes in the fore and aft distance, and diffusion radius were calculated using a MATLAB tool, based on which changes in structural stability were analyzed. Finally, the single-chain antibody was assessed in a nude mouse model. When n=3 or n=6, the similarity between the original distance and VH and VL were the highest, and the fore and aft distance and diffusion radius were relatively close. In addition, the nude mouse model indicated that, when n=3 or n=6, the inhibitory rate of the single-chain antibody against tumor cells was significantly higher, compared with the other linker peptides of different lengths. The effect of structural changes of the linker peptides in the single-chain antibodies on the whole antibody molecule was examined at different levels using a combination of mathematical modeling, bioinformatics methods and biological experiments. The findings of the present study may provide a foundation for further investigation into the preparation of single-chain antibodies.
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Affiliation(s)
- Xin Jiang
- Department of Urology, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Jun Zhai
- Reproductive Center, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Dongkui Song
- Department of Urology, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Qingshan Qu
- Department of Kidney Transplantation, People's Hospital of Zhengzhou, Zhengzhou, Henan 450003, P.R. China
| | - Ming Li
- Department of Kidney Transplantation, People's Hospital of Zhengzhou, Zhengzhou, Henan 450003, P.R. China
| | - Li Xing
- Department of Kidney Transplantation, People's Hospital of Zhengzhou, Zhengzhou, Henan 450003, P.R. China
| | - Shuzhai Miao
- Department of Kidney Transplantation, People's Hospital of Zhengzhou, Zhengzhou, Henan 450003, P.R. China
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16
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Cuevas AK, Niu J, Zhong M, Liberda EN, Ghio A, Qu Q, Chen LC. Metal rich particulate matter impairs acetylcholine-mediated vasorelaxation of microvessels in mice. Part Fibre Toxicol 2015; 12:14. [PMID: 26041432 PMCID: PMC4456050 DOI: 10.1186/s12989-014-0077-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Accepted: 12/23/2014] [Indexed: 12/20/2022] Open
Abstract
Background Exposure to PM2.5 (particulate matter <2.5 μm) has been associated with changes in endothelial function. PM2.5 was collected from two Chinese cities, Jinchang (JC) and Zhangye (ZH), both with similar PM2.5 concentrations. However, JC had levels of nickel (Ni), selenium (Se), copper (Cu), and arsenic (As) that were 76, 25, 17, and 7 fold higher than that measured in ZH, respectively. We used this unique PM sample to delineate the chemical components that drive pulmonary and systemic effects and explore the mechanism(s) by which vascular dysfunction is caused. Methods Male FVB/N mice received oropharyngeal aspiration of water or PM2.5 from JC, ZH or ZH spiked with one of the following elements at the same concentrations found in the JC PM (Ni = 4.76; As = 2.36; Se = 0.24; Cu = 2.43 μg/mg) followed by evaluation of markers of pulmonary and systemic inflammation. Mesenteric arteries were isolated for gene expression or functional response to various agonists (Phenylephrine, Acetylcholine, and Sodium Nitroprusside) and inhibitors (L-NAME, Apocynin, and VAS2870) ex vivo. Results Protein and total cell counts from lung lavage revealed significant pulmonary inflammation from ZH (p < 0.01) and JC and ZH + NiSO4 (p < 0.001) as compared to control and a significant decrease in mesenteric artery relaxation (p < 0.001) and this decrease is blunted in the presence of NADPH oxidase inhibitors. Significant increases in gene expression (TNF-α, IL-6, Nos3; p < 0.01; NOX4; p < 0.05) were observed in JC and ZH + NiSO4, as well as significantly higher concentrations of VEGF and IL-10 (p < 0.01, p < 0.001; respectively). Conclusions Our results indicate that the specific toxicity observed in PM from JC is likely due to the nickel component in the PM. Further, since VAS2870 was the most successful inhibitor to return vessels to baseline relaxation values, NADPH Oxidase is implicated as the primary source of PM-induced O2•-.
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Affiliation(s)
- Azita K Cuevas
- Department of Environmental Medicine, New York University School of Medicine, 57 Old Forge Road, Tuxedo, 10987, NY, USA.
| | - Jingping Niu
- Lanzhou University School of Public Health, Lanzhou, China.
| | - Mianhua Zhong
- Department of Environmental Medicine, New York University School of Medicine, 57 Old Forge Road, Tuxedo, 10987, NY, USA.
| | - Eric N Liberda
- Department of Environmental Medicine, New York University School of Medicine, 57 Old Forge Road, Tuxedo, 10987, NY, USA.
| | - Andrew Ghio
- Human Studies Division, NHEERL, USEPA, Research Triangle Park, Chapel Hill, NC, USA.
| | - Qingshan Qu
- Department of Environmental Medicine, New York University School of Medicine, 57 Old Forge Road, Tuxedo, 10987, NY, USA.
| | - Lung Chi Chen
- Department of Environmental Medicine, New York University School of Medicine, 57 Old Forge Road, Tuxedo, 10987, NY, USA.
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Abstract
Background The prevalence of prehypertension has increased in China, and prehypertension frequently progress to hypertension over a short time period; both have become public health problems. Therefore, this study was conducted to determine the relationship between the Visceral Adiposity Index (VAI) and blood pressure (BP) in China. Methods A cross-sectional epidemiological survey was conducted in China using a stratified random cluster sampling method. Sex-specific VAI quartile cut-off points were used as follows: 0.88, 1.41, 2.45 in males and 0.85, 1.33, 2.22 in females. Prehypertension and hypertension were each defined according to The Seventh Report of the Joint National Committee on the Prevention, Detection, Evaluation, and Treatment of High Blood Pressure (JNC 7) guidelines. A multivariate logistic analysis was conducted to analyze the relationship among VAI, prehypertension and hypertension. Results The ORs for prehypertension and hypertension in the upper quartiles of the VAI were 1.514 (1.074-2.133), P=0.018 and 1.660 (1.084-2.542), P=0.020, in males, after adjusting for age, education, smoking habits, alcohol consumption, physical activity, serum creatinine, fasting glucose, and plasma insulin. Following further adjustments for the above confounders, chronic kidney disease, and diabetes, the ORs for prehypertension and hypertension in the upper quartile of the VAI were 1.660 1.533 (1.086-2.165), P=0.015, and 1.743 (1.133-2.680), P=0.011, in males. The ORs for prehypertension and hypertension in the upper quartile of the VAI were 1.691 (1.223-2.338), P=0.001, and 1.682 (1.162-2.435), P=0.006, in females, after adjusting for age, education, smoking habits, alcohol consumption, physical activity, serum creatinine, fasting glucose, and plasma insulin. Following further adjustments for the above confounders, chronic kidney disease, and diabetes, the ORs for prehypertension and hypertension in the upper quartile of the VAI were 1.688 (1.220-2.334), P=0.002, and 1.657 (1.141-2.406), P=0.008, in females. Conclusions A higher VAI was positively associated with both prehypertension and hypertension in both males and females. It is both essential and urgent that clinicians take steps to control and prevent visceral adiposity.
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Affiliation(s)
- Yanan Ding
- Division of Cardiovascular Medicine, The People’s Hospital of Zhengzhou, Affiliated with Southern Medical University, Zhengzhou, P.R. China
| | - Dongfeng Gu
- Department of Nephrology and Transplantation Center, The People’s Hospital of Zhengzhou, Affiliated with Southern Medical University, Zhengzhou, P.R. China
| | - Yanxuan Zhang
- Department of Nephrology and Transplantation Center, The People’s Hospital of Zhengzhou, Affiliated with Southern Medical University, Zhengzhou, P.R. China
| | - Wenjie Han
- Division of Cardiovascular Medicine, The People’s Hospital of Zhengzhou, Affiliated with Southern Medical University, Zhengzhou, P.R. China
| | - Hengliang Liu
- Division of Cardiovascular Medicine, The People’s Hospital of Zhengzhou, Affiliated with Southern Medical University, Zhengzhou, P.R. China
| | - Qingshan Qu
- Department of Nephrology and Transplantation Center, The People’s Hospital of Zhengzhou, Affiliated with Southern Medical University, Zhengzhou, P.R. China
- * E-mail:
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18
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Zhao S, Qingmin C, Fu M, Yang X, Qu Q, Dai H. The inhibition of exogenous ethylene generated by solid ethylene-releasing agents on sprouting of potato tubers in relation to carbohydrate metabolism. Quality Assurance and Safety of Crops & Foods 2015. [DOI: 10.3920/qas2013.0384] [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] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- S. Zhao
- College of Food Science and Bioengineering, Qilu University of Technology, Ji'nan, China P.R
| | - C. Qingmin
- Department of Food Science and Engineering, Shandong Agriculture and Engineering College, Ji'nan, China P.R
| | - M. Fu
- College of Food Science and Bioengineering, Qilu University of Technology, Ji'nan, China P.R
| | - X. Yang
- College of Food Science and Bioengineering, Qilu University of Technology, Ji'nan, China P.R
| | - Q. Qu
- College of Food Science and Bioengineering, Qilu University of Technology, Ji'nan, China P.R
| | - H. Dai
- College of Food Science and Bioengineering, Qilu University of Technology, Ji'nan, China P.R
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Abstract
INTRODUCTION The discovery of endothelial progenitor cells (EPCs) may help to explain observed cardiovascular effects associated with inhaled nickel nanoparticle exposures, such as increases in vascular inflammation, generation of reactive oxygen species, altered vasomotor tone and potentiated atherosclerosis in murine species. METHODS Following an acute whole body inhalation exposure to 500 µg/m(3) of nickel nanoparticles for 5 h, bone marrow EPCs from C57BL/6 mice were isolated. EPCs were harvested for their RNA or used in a variety of assays including chemotaxis, tube formation and proliferation. Gene expression was assessed for important receptors involved in EPC mobilization and homing using RT-PCR methods. EPCs, circulating endothelial progenitor cells (CEPCs), circulating endothelial cells (CECs) and endothelial microparticles (EMPs) were quantified on a BD FACSCalibur to examine endothelial damage and repair associated with the exposure. RESULTS AND CONCLUSIONS Acute exposure to inhaled nickel nanoparticles significantly increased both bone marrow EPCs as well as their levels in circulation (CEPCs). CECs were significantly elevated indicating that endothelial damage occurred due to the exposure. There was no significant difference in EMPs between the two groups. Tube formation and chemotaxis, but not proliferation, of bone marrow EPCs was impaired in the nickel nanoparticle exposed group. These results coincided with a decrease in the mRNA of receptors involved in EPC mobilization and homing. These data provide new insight into how an acute nickel nanoparticle exposure to half of the current Occupational Safety & Health Administration (OSHA) permissible exposure limit may adversely affect EPCs and exacerbate cardiovascular disease states.
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Affiliation(s)
- Eric N Liberda
- Department of Environmental Medicine, New York University School of Medicine , Tuxedo, NY , USA and
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20
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Mao Y, Qu Q, Wu J, Chen X, Huang O, Shen K. P222 Tumor-infiltrating lymphocytes predict prognosis in early breast cancer. Breast 2015. [DOI: 10.1016/s0960-9776(15)70254-7] [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: 10/23/2022] Open
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21
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Chen Q, Fu M, Qu Q, Dai H, Zhao S. Effect of blanching pre-treatment on antioxidant activities and involved compounds in fresh daylily (Hemerocallis fulva L.) flowers. Quality Assurance and Safety of Crops & Foods 2015. [DOI: 10.3920/qas2013.0344] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Q. Chen
- Department of Food Science and Engineering, Shandong Agriculture and Engineering College, 866 Nongganyuan Road, Ji'nan, China P.R
| | - M. Fu
- College of Food Science and Bioengineering, Qilu University of Technology, 3501 Daxue Road, Ji'nan, China P.R
| | - Q. Qu
- College of Food Science and Bioengineering, Qilu University of Technology, 3501 Daxue Road, Ji'nan, China P.R
| | - H. Dai
- Department of Food Science and Engineering, Shandong Agriculture and Engineering College, 866 Nongganyuan Road, Ji'nan, China P.R
| | - S. Zhao
- College of Food Science and Bioengineering, Qilu University of Technology, 3501 Daxue Road, Ji'nan, China P.R
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Jiang X, Qu Q, Li M, Miao S, Li X, Cai W. Horsetail mixture on rheumatoid arthritis and its regulation on TNF-α and IL-10. Pak J Pharm Sci 2014; 27:2019-2023. [PMID: 25410066] [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] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Taking autoimmune inflammation of rheumatoid arthritis as entry point, this paper discussed the clinical effect of horsetail mixture on rheumatoid arthritis (RA) and its mechanism. A total of 60 cases of patients with RA were randomly divided into experimental group and control group using randomized controlled trial. We observed its biochemistry, TNF-α and IL-10 before and after treatment, and then systematically assessed the clinical effect of horsetail on RA. Results showed that the total effective rate of experimental group was 80%, while that of control group was 16.67%. After statistical treatment, the differences between two groups were significant (p<0.01). Comparison of the difference value of TNF-α (p<0.05) and IL-0.05 in serum between groups before and after treatment, there were significant differences. Comparison of CRP within group before and after treatment was significantly different (p<0.05), while comparison of CRP between groups was not significantly different (p>0.05). Comparison of ESR and RF within group before and after treatment was significantly different (p<0.01), and comparison of them between groups was also significantly different (p<0.05). Comparison of difference values within group before and after treatment were also significantly different (p<0.01). It was concluded that horsetail mixture has remarkable curative effect on rheumatoid arthritis, and its clinical application is safe and reliable. It has obvious down regulatory effect on cell factor TNF-α related to RA, that is, it can down regulate the level of pre-inflammatory factor TNF-α as well as the level of anti-inflammatory factor IL-10. Therefore, it is considered that the regulating effect of horsetail mixture on TNF-α and IL-10 is one of the mechanisms of its treatment on RA.
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Affiliation(s)
- Xin Jiang
- Department of Urology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China / Department of Kidney Transplantation, People's Hospital of Zhengzhou, Zhengzhou, China
| | - Qingshan Qu
- Department of Urology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Ming Li
- Department of Urology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Shuzhai Miao
- Department of Urology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xing Li
- Department of Urology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Wenli Cai
- Department of Urology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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Sun X, Mao Y, Wang J, Zu L, Hao M, Cheng G, Qu Q, Cui D, Keller ET, Chen X, Shen K, Wang J. IL-6 secreted by cancer-associated fibroblasts induces tamoxifen resistance in luminal breast cancer. Oncogene 2014:onc2014158. [PMID: 24909173 DOI: 10.1038/onc.2014.158] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Revised: 04/22/2014] [Accepted: 04/24/2014] [Indexed: 11/09/2022]
Abstract
Cancer-associated fibroblasts (CAFs) have been implicated in the development of resistance to anticancer drugs; however, the role and mechanism underlying CAFs in luminal breast cancer (BrCA) tamoxifen resistance are unclear. We found that stromal fibroblasts isolated from the central or peripheral area of BrCA have similar CAF phenotype and activity. In vitro and in vivo experiments showed that CAFs derived from clinical-luminal BrCAs induce tamoxifen resistance through decreasing estrogen receptor-α (ER-α) level when cultured with luminal BrCA cell lines MCF7 and T47D. CAFs promoted tamoxifen resistance through interleukin-6 (IL-6) secretion, which activates Janus kinase/signal transducers and activators of transcription (JAK/STAT3) and phosphatidylinositol 3-kinase (PI3K)/AKT pathways in tumor cells, followed by induction of epithelial-mesenchymal transition and upregulation of E3 ubiquitin ligase anaphase-promoting complex 10 activity, which targeted ER-α degradation through the ubiquitin-proteasome pathway. Inhibition of proteasome activity, IL-6 activity or either the JAK/STAT3 or PI3K/AKT pathways markedly reduced CAF-induced tamoxifen resistance. In xenograft experiments of CAFs mixed with MCF7 cells, CAF-specific IL-6 knockdown inhibited tumorigenesis and restored tamoxifen sensitivity. These findings indicate that CAFs mediate tamoxifen resistance through IL-6-induced degradation of ER-α in luminal BrCAs.Oncogene advance online publication, 9 June 2014; doi:10.1038/onc.2014.158.
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Affiliation(s)
- X Sun
- Department of Biochemistry and Molecular and Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and Inflammation, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Y Mao
- Comprehensive Breast Health Center, Shanghai Jiaotong University School of Medicine, Ruijin Hospital, Shanghai, China
| | - J Wang
- Department of Biochemistry and Molecular and Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and Inflammation, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - L Zu
- Department of Biochemistry and Molecular and Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and Inflammation, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - M Hao
- Department of Biochemistry and Molecular and Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and Inflammation, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - G Cheng
- Department of Biochemistry and Molecular and Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and Inflammation, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Q Qu
- Comprehensive Breast Health Center, Shanghai Jiaotong University School of Medicine, Ruijin Hospital, Shanghai, China
| | - D Cui
- Department of Urology, University of Michigan, Ann Arbor, MI, USA
| | - E T Keller
- Department of Urology, University of Michigan, Ann Arbor, MI, USA
| | - X Chen
- Comprehensive Breast Health Center, Shanghai Jiaotong University School of Medicine, Ruijin Hospital, Shanghai, China
| | - K Shen
- Comprehensive Breast Health Center, Shanghai Jiaotong University School of Medicine, Ruijin Hospital, Shanghai, China
| | - J Wang
- 1] Department of Biochemistry and Molecular and Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and Inflammation, Shanghai Jiaotong University School of Medicine, Shanghai, China [2] Comprehensive Breast Health Center, Renji Hospital, Shanghai, China
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Qu Q, Mao Y, Zhang Y, Liu J, Chen X, Shen K. USP2 Promotes Progression in Triple Negative Breast Cancer. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu066.16] [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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Mao Y, Qu Q, Zhang Y, Liu J, Wang G, Liang Y, Shen K. The Prognosis of Signal Transducer and Activator of Transcription 3 Expression On Breast Cancer Survival: a Meta-Analysis and Retrospective Study. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu066.22] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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26
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Lucas B, Chen WC, Bleck B, Reibman J, Rom W, Narayanan N, Qu Q, Park SH, Grunig G. Regulation of microRNA expression in the lungs by exposure to air pollution & antigen (HUM2P.340). The Journal of Immunology 2014. [DOI: 10.4049/jimmunol.192.supp.53.13] [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] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Abstract
Pulmonary Hypertension is characterized by pulmonary arterial remodeling and increased pressure in the pulmonary circulation. It is often associated with inflammation in the lungs and can lead to right heart failure. Our work shows that urban ambient pollution exacerbates the experimental pulmonary hypertension phenotype just like other types of inflammatory lung conditions. We aimed to identify microRNAs (miRNAs) that are differentially expressed in our mouse model. In addition, we examined plasma samples from individuals occupationally exposed to high levels of air pollution or cigarette smoke, and from controls. Our study is the first to show significantly de-regulated expression of three microRNA species (miR-135a, miR-21, miR-204) in the lungs of mice that were exposed to antigen and particulate matter and developed pulmonary hypertension. De-regulated levels of miR-21 and miR-204 have been reported in human pulmonary hypertension and in experimental pulmonary hypertension. MiR-135a is targeting STAT6 and upregulated expression has been reported in experimental asthma. Using human samples, our study showed that plasma levels of miR-21 and miR-135a, but not levels of miR-204, clustered individuals with high dose exposures and individuals with low dose environmental exposures. Current studies are aimed at identifying the cytokines that control these miRNAs’ expression. The long range goal is to identify miRNAs that indicate an at-risk state of the pulmonary vasculature.
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Affiliation(s)
- Benjamin Lucas
- 1Environmental Medicine, New York University Medical Center, New York, NY
| | - Wen-Chi Chen
- 1Environmental Medicine, New York University Medical Center, New York, NY
| | - Bertram Bleck
- 2Medicine (Pulmonary), New York University Medical Center, New York, NY
| | - Joan Reibman
- 2Medicine (Pulmonary), New York University Medical Center, New York, NY
- 1Environmental Medicine, New York University Medical Center, New York, NY
| | - William Rom
- 2Medicine (Pulmonary), New York University Medical Center, New York, NY
- 1Environmental Medicine, New York University Medical Center, New York, NY
| | | | - Qingshan Qu
- 1Environmental Medicine, New York University Medical Center, New York, NY
| | - Sung-Hyun Park
- 1Environmental Medicine, New York University Medical Center, New York, NY
| | - Gabriele Grunig
- 1Environmental Medicine, New York University Medical Center, New York, NY
- 2Medicine (Pulmonary), New York University Medical Center, New York, NY
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Trasande L, Niu J, Li J, Liu X, Zhang B, Li Z, Ding G, Sun Y, Chen M, Hu X, Chen LC, Mendelsohn A, Chen Y, Qu Q. The Environment and Children's Health Care in Northwest China. BMC Pediatr 2014; 14:82. [PMID: 24670157 PMCID: PMC3986873 DOI: 10.1186/1471-2431-14-82] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Accepted: 03/21/2014] [Indexed: 11/11/2022] Open
Abstract
Background Industrialization in the northwest provinces of the People’s Republic of China is accelerating rapid increases in early life environmental exposures, yet no publications have assessed health care provider capacity to manage common hazards. Methods To assess provider attitudes and beliefs regarding the environment in children’s health, determine self-efficacy in managing concerns, and identify common approaches to managing patients with significant exposures or environmentally-mediated conditions, a two-page survey was administered to pediatricians, child care specialists, and nurses in five provinces (Gansu, Shaanxi, Xinjiang, Qinghai, and Ningxia). Descriptive and multivariable analyses assessed predictors of strong self-efficacy, beliefs or attitudes. Results 960 surveys were completed with <5% refusal; 695 (72.3%) were valid for statistical analyses. The role of environment in health was rated highly (mean 4.35 on a 1-5 scale). Self-efficacy reported with managing lead, pesticide, air pollution, mercury, mold and polychlorinated biphenyl exposures were generally modest (2.22-2.52 mean). 95.4% reported patients affected with 11.9% reporting seeing >20 affected patients. Only 12.0% reported specific training in environmental history taking, and 12.0% reported owning a text on children’s environmental health. Geographic disparities were most prominent in multivariable analyses, with stronger beliefs in environmental causation yet lower self-efficacy in managing exposures in the northwestern-most province. Conclusions Health care providers in Northwest China have strong beliefs regarding the role of environment in children’s health, and frequently identify affected children. Few are trained in environmental history taking or rate self-efficacy highly in managing common hazards. Enhancing provider capacity has promise for improving children’s health in the region.
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Affiliation(s)
- Leonardo Trasande
- Department of Pediatrics, New York University School of Medicine, 227 East 30th Street Rm 109, New York, NY 10016, USA.
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Niu J, Liberda EN, Qu S, Guo X, Li X, Zhang J, Meng J, Yan B, Li N, Zhong M, Ito K, Wildman R, Liu H, Chen LC, Qu Q. The role of metal components in the cardiovascular effects of PM2.5. PLoS One 2013; 8:e83782. [PMID: 24386277 PMCID: PMC3873977 DOI: 10.1371/journal.pone.0083782] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Accepted: 11/08/2013] [Indexed: 12/20/2022] Open
Abstract
Exposure to ambient fine particulate matter (PM2.5) increases risks for cardiovascular disorders (CVD). However, the mechanisms and components responsible for the effects are poorly understood. Based on our previous murine exposure studies, a translational pilot study was conducted in female residents of Jinchang and Zhangye, China, to test the hypothesis that specific chemical component of PM2.5 is responsible for PM2.5 associated CVD. Daily ambient and personal exposures to PM2.5 and 35 elements were measured in the two cities. A total of 60 healthy nonsmoking adult women residents were recruited for measurements of inflammation biomarkers. In addition, circulating endothelial progenitor cells (CEPCs) were also measured in 20 subjects. The ambient levels of PM2.5 were comparable between Jinchang and Zhangye (47.4 and 54.5µg/m3, respectively). However, the levels of nickel, copper, arsenic, and selenium in Jinchang were 82, 26, 12, and 6 fold higher than Zhangye, respectively. The levels of C-reactive protein (3.44±3.46 vs. 1.55±1.13), interleukin-6 (1.65±1.17 vs. 1.09±0.60), and vascular endothelial growth factor (117.6±217.0 vs. 22.7±21.3) were significantly higher in Jinchang. Furthermore, all phenotypes of CEPCs were significantly lower in subjects recruited from Jinchang than those from Zhangye. These results suggest that specific metals may be important components responsible for PM2.5-induced cardiovascular effects and that the reduced capacity of endothelial repair may play a critical role.
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Affiliation(s)
- Jingping Niu
- Lanzhou University School of Public Health, Lanzhou, China
| | - Eric N Liberda
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, New York, United States of America
| | - Song Qu
- New York University College of Arts and Sciences, New York City, New York, United States of America
| | - Xinbiao Guo
- Peking University School of Public Health, Beijing, China
| | - Xiaomei Li
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, New York, United States of America
| | - Jingjing Zhang
- Lanzhou University School of Public Health, Lanzhou, China
| | - Junliang Meng
- Lanzhou University School of Public Health, Lanzhou, China
| | - Bing Yan
- Lanzhou University School of Public Health, Lanzhou, China
| | - Nairong Li
- Lanzhou University School of Public Health, Lanzhou, China
| | - Mianhua Zhong
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, New York, United States of America
| | - Kazuhiko Ito
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, New York, United States of America
| | - Rachel Wildman
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, New York, United States of America
| | - Hong Liu
- Peking University School of Public Health, Beijing, China
| | - Lung Chi Chen
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, New York, United States of America
| | - Qingshan Qu
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, New York, United States of America
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Arita A, Muñoz A, Chervona Y, Niu J, Qu Q, Zhao N, Ruan Y, Kiok K, Kluz T, Sun H, Clancy HA, Shamy M, Costa M. Gene expression profiles in peripheral blood mononuclear cells of Chinese nickel refinery workers with high exposures to nickel and control subjects. Cancer Epidemiol Biomarkers Prev 2013; 22:261-9. [PMID: 23195993 PMCID: PMC3565097 DOI: 10.1158/1055-9965.epi-12-1011] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [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] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Occupational exposure to nickel (Ni) is associated with an increased risk of lung and nasal cancers. Ni compounds exhibit weak mutagenic activity, alter the cell's epigenetic homeostasis, and activate signaling pathways. However, changes in gene expression associated with Ni exposure have only been investigated in vitro. This study was conducted in a Chinese population to determine whether occupational exposure to Ni was associated with differential gene expression profiles in the peripheral blood mononuclear cells (PBMC) of Ni-refinery workers when compared with referents. METHODS Eight Ni-refinery workers and ten referents were selected. PBMC RNA was extracted and gene expression profiling was conducted using Affymetrix exon arrays. Differentially expressed genes (DEG) between both groups were identified in a global analysis. RESULTS There were a total of 2,756 DEGs in the Ni-refinery workers relative to the referents [false discovery rate (FDR) adjusted P < 0.05] with 770 upregulated genes and 1,986 downregulated genes. DNA repair and epigenetic genes were significantly overrepresented (P < 0.0002) among the DEGs. Of 31 DNA repair genes, 29 were repressed in the Ni-refinery workers and 2 were overexpressed. Of the 16 epigenetic genes, 12 were repressed in the Ni-refinery workers and 4 were overexpressed. CONCLUSIONS The results of this study indicate that occupational exposure to Ni is associated with alterations in gene expression profiles in PBMCs of subjects. IMPACT Gene expression may be useful in identifying patterns of deregulation that precede clinical identification of Ni-induced cancers.
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Affiliation(s)
- Adriana Arita
- New York University School of Medicine, Nelson Institute of Environmental Medicine, 57 Old Forge Road, NY 10987
| | - Alexandra Muñoz
- New York University School of Medicine, Nelson Institute of Environmental Medicine, 57 Old Forge Road, NY 10987
| | - Yana Chervona
- New York University School of Medicine, Nelson Institute of Environmental Medicine, 57 Old Forge Road, NY 10987
| | - Jingping Niu
- Lanzhou University School of Public Health, Lanzhou, China
| | - Qingshan Qu
- New York University School of Medicine, Nelson Institute of Environmental Medicine, 57 Old Forge Road, NY 10987
| | - Najuan Zhao
- Lanzhou University School of Public Health, Lanzhou, China
| | - Ye Ruan
- Lanzhou University School of Public Health, Lanzhou, China
| | - Kathrin Kiok
- New York University School of Medicine, Nelson Institute of Environmental Medicine, 57 Old Forge Road, NY 10987
| | - Thomas Kluz
- New York University School of Medicine, Nelson Institute of Environmental Medicine, 57 Old Forge Road, NY 10987
| | - Hong Sun
- New York University School of Medicine, Nelson Institute of Environmental Medicine, 57 Old Forge Road, NY 10987
| | - Hailey A. Clancy
- New York University School of Medicine, Nelson Institute of Environmental Medicine, 57 Old Forge Road, NY 10987
| | - Magdy Shamy
- King Abdulaziz University, Department of Environmental Sciences, Faculty of Meteorology, Environment and Arid Land Agriculture, Jeddah, Saudi Arabia
| | - Max Costa
- New York University School of Medicine, Nelson Institute of Environmental Medicine, 57 Old Forge Road, NY 10987
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Vuskovic M, Barbuti AM, Goldsmith-Rooney E, Glassman L, Bovin N, Pass H, Tchou-Wong KM, Chen M, Yan B, Niu J, Qu Q, Costa M, Huflejt M. Plasma Anti-Glycan Antibody Profiles Associated with Nickel level in Urine. ACTA ACUST UNITED AC 2013; 6:302-312. [PMID: 24737927 PMCID: PMC3984841 DOI: 10.4172/jpb.1000295] [Citation(s) in RCA: 3] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Nickel (Ni) compounds are widely used in industrial and commercial products including household and cooking utensils, jewelry, dental appliances and implants. Occupational exposure to nickel is associated with an increased risk for lung and nasal cancers, is the most common cause of contact dermatitis and has an extensive effect on the immune system. The purpose of this study was two-fold: (i) to evaluate immune response to the occupational exposure to nickel measured by the presence of anti-glycan antibodies (AGA) using a new biomarker-discovery platform based on printed glycan arrays (PGA), and (ii) to evaluate and compile a sequence of bioinformatics and statistical methods which are specifically relevant to PGA-derived information and to identification of putative "Ni toxicity signature". The PGAs are similar to DNA microarrays, but contain deposits of various carbohydrates (glycans) instead of spotted DNAs. The study uses data derived from a set of 89 plasma specimens and their corresponding demographic information. The study population includes three subgroups: subjects directly exposed to Nickel that work in a refinery, subjects environmentally exposed to Nickel that live in a city where the refinery is located and subjects that live in a remote location. The paper describes the following sequence of nine data processing and analysis steps: (1) Analysis of inter-array reproducibility based on benchmark sera; (2) Analysis of intra-array reproducibility; (3) Screening of data - rejecting glycans which result in low intra-class correlation coefficient (ICC), high coefficient of variation and low fluorescent intensity; (4) Analysis of inter-slide bias and choice of data normalization technique; (5) Determination of discriminatory subsamples based on multiple bootstrap tests; (6) Determination of the optimal signature size (cardinality of selected feature set) based on multiple cross-validation tests; (7) Identification of the top discriminatory glycans and their individual performance based on nonparametric univariate feature selection; (8) Determination of multivariate performance of combined glycans; (9) Establishing the statistical significance of multivariate performance of combined glycan signature. The above analysis steps have delivered the following results: inter-array reproducibility ρ=0.920 ± 0.030; intra-array reproducibility ρ=0.929 ± 0.025; 249 out of 380 glycans passed the screening at ICC>80%, glycans in selected signature have ICC ≥ 88.7%; optimal signature size (after quantile normalization)=3; individual significance for the signature glycans p=0.00015 to 0.00164, individual AUC values 0.870 to 0.815; observed combined performance for three glycans AUC=0.966, p=0.005, CI=[0.757, 0947]; specifity=94.4%, sensitivity=88.9%; predictive (cross-validated) AUC value 0.836.
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Affiliation(s)
- Marko Vuskovic
- Department of Computer Science, San Diego State University, San Diego, 92182 CA, USA
| | - Anna-Maria Barbuti
- Department of Cardiothoracic Surgery, NYU School of Medicine, New York, 10016 NY, USA
| | - Emma Goldsmith-Rooney
- Department of Cardiothoracic Surgery, NYU School of Medicine, New York, 10016 NY, USA
| | - Laura Glassman
- Department of Cardiothoracic Surgery, NYU School of Medicine, New York, 10016 NY, USA
| | - Nicolai Bovin
- Shemyakin Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
| | - Harvey Pass
- Department of Cardiothoracic Surgery, NYU School of Medicine, New York, 10016 NY, USA
| | - Kam-Meng Tchou-Wong
- Department of Environmental Medicine, NYU School of Medicine, New York, 10016 NY, USA
| | - Meichi Chen
- Lanzhou University School of Public Health, Lanzhou, Gansu 730000, China
| | - Bing Yan
- Lanzhou University School of Public Health, Lanzhou, Gansu 730000, China
| | - Jingping Niu
- Lanzhou University School of Public Health, Lanzhou, Gansu 730000, China
| | - Qingshan Qu
- Department of Environmental Medicine, NYU School of Medicine, New York, 10016 NY, USA
| | - Max Costa
- Department of Environmental Medicine, NYU School of Medicine, New York, 10016 NY, USA
| | - Margaret Huflejt
- Department of Cardiothoracic Surgery, NYU School of Medicine, New York, 10016 NY, USA
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Arita A, Shamy MY, Chervona Y, Clancy HA, Sun H, Hall MN, Qu Q, Gamble MV, Costa M. The effect of exposure to carcinogenic metals on histone tail modifications and gene expression in human subjects. J Trace Elem Med Biol 2012; 26:174-8. [PMID: 22633395 PMCID: PMC3620044 DOI: 10.1016/j.jtemb.2012.03.012] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/29/2012] [Accepted: 03/16/2012] [Indexed: 10/28/2022]
Abstract
The precise mechanisms by which nickel and arsenic compounds exert their carcinogenic properties are not completely understood. In recent years, alterations of epigenetic mechanisms have been implicated in the carcinogenesis of compounds of these two metals. In vitro exposure to certain nickel or arsenic compounds induces changes in both DNA methylation patterns, as well as, in the levels of posttranslational modifications of histone tails. Changes in DNA methylation patterns have been reported in human subjects exposed to arsenic. Here we review our recent reports on the alterations in global levels of posttranslational histone modifications in peripheral blood mononuclear cells (PBMCs) of subjects with occupational exposure to nickel and subjects exposed to arsenic in their drinking water. Occupational exposure to nickel was associated with an increase in H3K4me3 and decrease in H3K9me2. A global increase in H3K9me2 and decrease in H3K9ac was found in subjects exposed to arsenic. Additionally, exposure to arsenic resulted in opposite changes in a number of histone modifications in males when compared with females in the arsenic population. The results of these two studies suggest that exposure to nickel or arsenic compounds, and possibly other carcinogenic metal compounds, can induce changes in global levels of posttranslational histone modifications in peripheral blood mononuclear cells.
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Affiliation(s)
- Adriana Arita
- Department of Environmental Medicine, New York University School of Medicine, Tuxedo, New York, USA
| | - Magdy Y. Shamy
- Department of Environmental Sciences, Meteorology, Environment and Arid Land Agriculture, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Yana Chervona
- Department of Environmental Medicine, New York University School of Medicine, Tuxedo, New York, USA
| | - Harriet A. Clancy
- Department of Environmental Medicine, New York University School of Medicine, Tuxedo, New York, USA
| | - Hong Sun
- Department of Environmental Medicine, New York University School of Medicine, Tuxedo, New York, USA
| | - Megan N. Hall
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Qingshan Qu
- Department of Environmental Medicine, New York University School of Medicine, Tuxedo, New York, USA
| | - Mary V. Gamble
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Max Costa
- Department of Environmental Medicine, New York University School of Medicine, Tuxedo, New York, USA
- Corresponding author: Max Costa; New York University School of Medicine, 57 Old Forge Road, Tuxedo, New York, 10987, USA.
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Xu X, Deng F, Guo X, Lv P, Zhong M, Liu C, Wang A, Tzan K, Jiang SY, Lippmann M, Rajagopalan S, Qu Q, Chen LC, Sun Q. Association of systemic inflammation with marked changes in particulate air pollution in Beijing in 2008. Toxicol Lett 2012; 212:147-56. [PMID: 22617750 DOI: 10.1016/j.toxlet.2012.05.014] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2012] [Revised: 05/11/2012] [Accepted: 05/12/2012] [Indexed: 12/21/2022]
Abstract
Many studies have linked ambient fine particulate matter (aerodynamic diameters less than 2.5 μm, PM₂.₅) air pollution to increased morbidity and mortality of cardiovascular diseases in the general population, but the biologic mechanisms of these associations are yet to be elucidated. In this study, we aimed to evaluate the relationship between daily variations in exposure to PM₂.₅ and inflammatory responses in mice during and for 2 months after the Beijing Olympic Games. Male C57BL/6 mice were exposed to Beijing PM₂.₅ or filtered air (FA) in 2008 during the 2 months of Beijing Olympic and Paralympic Games, and for 2 months after the end of the Games. During the Games, circulating monocyte chemoattractant protein 1 and interleukin 6 were increased significantly in the PM₂.₅ exposure group, when compared with the FA control group, although there were no significant inter-group differences in tumor necrosis factor-α or interferon-γ, or in macrophages, neutrophils or lymphocytes in the spleen or thymus between these 2 groups. However, macrophages were significantly increased in the lung and visceral fat with increasing PM₂.₅. After the Olympic Games, there were no significant PM₂.₅-associated differences for macrophages, neutrophils or lymphocytes in the thymus, but macrophages were significantly elevated in the lung, spleen, subcutaneous and visceral fat with increasing PM₂.₅, and the numbers of macrophages were even higher after than those during the Games. Moreover, the number of neutrophils was markedly higher in the spleen for the PM₂.₅-exposed- than the FA-group. These data suggest that short-term increases in exposure to ambient PM₂.₅ leads to increased systemic inflammatory responses, primarily macrophages and neutrophils in the lung, spleen, and visceral adipose tissue. Short-term air quality improvements were significantly associated with reduced overall inflammatory responses.
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Affiliation(s)
- Xiaohua Xu
- Division of Environmental Health Sciences, College of Public Health, The Ohio State University, Columbus, OH, USA
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Arita A, Niu J, Qu Q, Zhao N, Ruan Y, Nadas A, Chervona Y, Wu F, Sun H, Hayes RB, Costa M. Global levels of histone modifications in peripheral blood mononuclear cells of subjects with exposure to nickel. Environ Health Perspect 2012; 120:198-203. [PMID: 22024396 PMCID: PMC3279455 DOI: 10.1289/ehp.1104140] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [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: 06/28/2011] [Accepted: 10/24/2011] [Indexed: 05/03/2023]
Abstract
BACKGROUND Occupational exposure to nickel (Ni) is associated with an increased risk for lung and nasal cancers. Ni compounds exhibit weak mutagenic activity, cause gene amplification, and disrupt cellular epigenetic homeostasis. However, the Ni-induced changes in global histone modification levels have only been tested in vitro. OBJECTIVE This study was conducted in a Chinese population to determine whether occupational exposure to Ni is associated with alterations of global histone modification levels and to evaluate the inter- and intraindividual variance of global histone modification levels. METHOD Forty-five subjects with occupational exposure to Ni and 75 referents were recruited. Urinary Ni and global H3K4 trimethylation, H3K9 acetylation, and H3K9 dimethylation levels were measured in peripheral blood mononuclear cells (PBMCs) of subjects. RESULTS H3K4me3 was elevated in Ni-exposed subjects (0.25% ± 0.11%) compared with referents (0.15% ± 0.04%; p = 0.0004), and H3K9me2 was decreased (Ni-exposed subjects, 0.11% ± 0.05%; referents, 0.15% ± 0.04%; p = 0.003). H3K4me3 was positively (r = 0.4, p = 0.0008) and H3K9ac was negatively (r = 0.1, p = 0.01) associated with urinary Ni. Interindividual variances of H3K4me3, H3K9ac, and H3K9me2 were larger compared with intraindividual variance in both exposure test groups, resulting in reliability coefficients (an estimate of consistency of a set of measurements) of 0.60, 0.67, and 0.79 for H3K4me3, H3K9ac, and H3K9me2, respectively, for Ni-exposed subjects and of 0.75, 0.74, and 0.97, respectively, for referent subjects. CONCLUSION The results of this study indicate that occupational exposure to Ni is associated with alterations of global histone modification levels and that measurements of global levels of histone modifications are relatively stable over time in human PBMCs.
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Affiliation(s)
- Adriana Arita
- Department of Environmental Medicine, New York University School of Medicine, New York, New York, USA
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Zhou L, Rui JA, Wang SB, Chen SG, Qu Q. Prognostic factors of solitary large hepatocellular carcinoma: The importance of differentiation grade. Eur J Surg Oncol 2011; 37:521-5. [DOI: 10.1016/j.ejso.2011.03.137] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2010] [Revised: 02/10/2011] [Accepted: 03/28/2011] [Indexed: 12/19/2022] Open
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Arita AG, Wu F, Sun H, Kiok K, Kluz T, Qu Q, Zhao N, Ruan Y, Niu J, Hayes R, Costa M. Abstract 2012: Changes in gene expression and global histone marks in a human population exposed to nickel compounds. Cancer Res 2011. [DOI: 10.1158/1538-7445.am2011-2012] [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
All of the studies on the global and selective gene promoter changes in epigenetic marks induced by carcinogenic Nickel compounds have been mostly done in tissue culture model systems. Here we report the results of the first study to evaluate the global changes in epigenetic marks and changes in gene expression that occur in the peripheral blood lymphocytes of a human population occupationally exposed to Nickel compounds. Nickel (II) is a toxic nonessential transition metal used in modern industry with other metals to form alloys to produce coins, jewelry, stainless steel, Ni-Cd batteries, and carbon nanoparticles. Nickel is of great environmental concern because occupational exposure to Ni compounds has been associated with an increased risk for lung and nasal cancers. Using an ELISA method, a decrease in both H3K4me3 and H3K9me2 histone marks were found with increasing levels of Nickel in the urine of subjects recruited to the study from a nickel refinery in Jinchang, China. Changes in global levels of other epigenetic marks are also being measured in the samples of subjects recruited to the study. Inter- and intra-individual variability of H3K4me3 and H3K9me2 and other epigenetic marks will also be evaluated in primary lymphocytes of this particular Chinese population. Additionally, changes in gene expression patterns between individuals with low exposure to Ni and those with higher exposure will be compared in order to identify a possible biomarker of Ni exposure. Studies on the effect of Ni compounds to human health are very important since Nickel is a classified human carcinogen. Here we are studying for the first time the mechanisms of nickel-associated changes in gene regulation and global histone epigenetic marks found in the primary lymphocytes of a human population occupationally exposed to Nickel compounds.
Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 102nd Annual Meeting of the American Association for Cancer Research; 2011 Apr 2-6; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2011;71(8 Suppl):Abstract nr 2012. doi:10.1158/1538-7445.AM2011-2012
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Affiliation(s)
| | - Fen Wu
- 1New York University, Tuxedo, NY
| | - Hong Sun
- 1New York University, Tuxedo, NY
| | | | | | | | - Najuan Zhao
- 2Lanzhou University School of Public Health, Lanzhou, Gansu, China
| | - Ye Ruan
- 2Lanzhou University School of Public Health, Lanzhou, Gansu, China
| | - Jingping Niu
- 2Lanzhou University School of Public Health, Lanzhou, Gansu, China
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Liberda EN, Cuevas AK, Gillespie PA, Grunig G, Qu Q, Chen LC. Exposure to inhaled nickel nanoparticles causes a reduction in number and function of bone marrow endothelial progenitor cells. Inhal Toxicol 2010; 22 Suppl 2:95-9. [PMID: 20936915 DOI: 10.3109/08958378.2010.515269] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
INTRODUCTION Particulate matter (PM), specifically nickel (Ni) found on or in PM, has been associated with an increased risk of mortality in human population studies and significant increases in vascular inflammation, generation of reactive oxygen species, altered vasomotor tone, and potentiated atherosclerosis in murine exposures. Recently, murine inhalation of Ni nanoparticles have been shown to cause pulmonary inflammation that affects cardiovascular tissue and potentiates atherosclerosis. These adverse cardiovascular outcomes may be due to the effects of Ni on endothelial progenitor cells (EPCs), endogenous semi-pluripotent stem cells that aid in endothelial repair. Thus, we hypothesize that Ni nanoparticle exposures decrease cell count and cause impairments in function that may ultimately have significant effects on various cardiovascular diseases, such as, atherosclerosis. METHODS Experiments involving inhaled Ni nanoparticle exposures (2 days/5 h/day at ∼1200 µg/m(3), 3 days/5 h/day at ∼700 µg/m(3), and 5 days/5 h/day at ∼100 µg/m(3)), were performed in order to quantify bone marrow resident EPCs using flow cytometry in C57BL/6 mice. Plasma levels of human stromal cell-derived factor 1α (SDF-1α) and vascular endothelial growth factor (VEGF) were assessed by enzyme-linked immunosorbent assay and in vitro functional assessments of cultured EPCs were conducted. RESULTS AND CONCLUSIONS Significant EPC count differences between exposure and control groups for Ni nanoparticle exposures were observed. Differences in EPC tube formation and chemotaxis were also observed for the Ni nanoparticle exposed group. Plasma VEGF and SDF-1α differences were not statistically significant. In conclusion, this study shows that inhalation of Ni nanoparticles results in functionally impaired EPCs and reduced number in the bone marrow, which may lead to enhanced progression of atherosclerosis.
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Affiliation(s)
- Eric N Liberda
- Department of Environmental Medicine, New York University School of Medicine, Tuxedo, New York, USA
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Wang S, Prophete C, Soukup JM, Chen LC, Costa M, Ghio A, Qu Q, Cohen MD, Chen H. Roles of MAPK pathway activation during cytokine induction in BEAS-2B cells exposed to fine World Trade Center (WTC) dust. J Immunotoxicol 2010; 7:298-307. [PMID: 20731619 DOI: 10.3109/1547691x.2010.509289] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
The World Trade Center (WTC) collapse on September 11, 2001 released copious amounts of particulate matter (PM) into the atmosphere of New York City. Follow-up studies on persons exposed to the dusts have revealed a severely increased rate for asthma and other respiratory illnesses. There have only been a few studies that have sought to discern the possible mechanisms underlying these untoward pathologies. In one study, an increased cytokine release was detected in cells exposed to WTC fine dusts (PM₂.₅ fraction or WTC₂.₅). However, the mechanism(s) for these increases has yet to be fully defined. Because activation of the mitogen-activated protein kinase (MAPK) signaling pathways is known to cause cytokine induction, the current study was undertaken to analyze the possible involvement of these pathways in any increased cytokine formation by lung epithelial cells (as BEAS-2B cells) exposed to WTC₂.₅. Our results showed that exposure to WTC₂.₅ for 5 hr increased interleukin-6 (IL-6) mRNA expression in BEAS-2B cells, as well as its protein levels in the culture media, in a dose-dependent manner. Besides IL-6, cytokine multiplex analyses revealed that formation of IL-8 and -10 was also elevated by the exposure. Both extracellular signal-regulated kinase (ERK) and p38, but not c-Jun N-terminal protein kinase, signaling pathways were found to be activated in cells exposed to WTC₂.₅. Inactivation of ERK signaling pathways by PD98059 effectively blocked IL-6, -8, and -10 induction by WTC₂.₅; the p38 kinase inhibitor SB203580 significantly decreased induction of IL-8 and -10. Together, our data demonstrated activation of MAPK signaling pathway(s) likely played an important role in the WTC₂.₅-induced formation of several inflammatory (and, subsequently, anti-inflammatory) cytokines. The results are important in that they help to define one mechanism via which the WTC dusts may have acted to cause the documented increases in asthma and other inflammation-associated respiratory dysfunctions in the individuals exposed to the dusts released from the WTC collapse.
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Affiliation(s)
- Shang Wang
- Department of Environmental Medicine, New York University School of Medicine, Tuxedo, NY 10987, USA
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Schayer SR, Qu Q, Wang Y, Cohen BS. 210Pb: A Predictive Biomarker of Retrospective Cigarette Smoke Exposure. Cancer Epidemiol Biomarkers Prev 2010; 19:338-50. [DOI: 10.1158/1055-9965.epi-09-1008] [Citation(s) in RCA: 4] [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: 11/16/2022] Open
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Qu S, Liberda EN, Qu Q, Chen LC. In vitro assessment of the inflammatory response of respiratory endothelial cells exposed to particulate matter. J Toxicol Environ Health A 2010; 73:1113-1121. [PMID: 20574913 DOI: 10.1080/15287394.2010.484335] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Particulate matter (PM) is a ubiquitous environmental pollutant that has been associated with increased risk of cardiopulmonary mortality and morbidity in urban communities. An increasing body of evidence suggests that inflammation induced by PM may play an important role in the development of cardiovascular diseases. However, airway epithelial cell lines, instead of vascular endothelial cells, are commonly used to investigate the effects of PM with respect to cardiovascular effects. Thus, the present study was conducted using primary human vascular endothelial cells (HMVEC-LB1), human white blood cells (WBC), and their cocultures to evaluate their inflammatory responses to various PM exposures. Enzyme-linked immunosorbent assay (ELISA) kits were used to measure the concentrations of interleukin (IL)-6, soluble intercellular adhesion marker (sICAM-1), and soluble vascular cell adhesion marker (sVCAM-1) in HMVEC-LB1, WBC, and their cocultures after exposure to size-fractionated PM. Pretreatment of cells with inhibitors was performed in order to examine pathways involved in PM-induced cellular responses. IL-6 levels increased significantly in HMVEC-LB1 cells exposed to PM in both a time- and concentration-dependent manner. However, particle exposure for up to 24 h failed to induce any detectable production of sICAM-1 or sVCAM-1 in HMVEC-LB1 cells. IL-6 production in response to size-fractioned PM exposures failed to show evidence of relative importance of particle sizes in their abilities to induce proinflammatory responses. Lastly, cocultures with WBC significantly enhanced particle induced IL-6 release in HMVEC-LB1 cells in a synergistic manner. The present study suggests that HMVEC-LB1 cells can be successfully used as an in vitro model to examine effects of PM exposure.
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Affiliation(s)
- Song Qu
- New York University College of Arts and Sciences, New York, NY 10987, USA.
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Zhang C, Su Z, Zhao B, Qu Q, Tan Y, Cai L, Li X. Tat-modified leptin is more accessible to hypothalamus through brain-blood barrier with a significant inhibition of body-weight gain in high-fat-diet fed mice. Exp Clin Endocrinol Diabetes 2009; 118:31-7. [PMID: 19472101 DOI: 10.1055/s-0029-1202273] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Obesity in human was found mainly due to the poor transportation of leptin through brain-blood barrier (BBB), called as leptin resistance. To produce a leptin capable of penetrating BBB, we have added Tat-PTD(9) to the C terminal of leptin to construct a fusion protein. The fusion Tat-leptin and native leptin genes were synthesized by single-step insertion of a polymerase chain reaction and expressed in Escherichia coli BL21 (Rosseta). The expressing products were purified and renatured by Ni-NTA affinity chromatography, and identified by the molecular size in SDS-PAGE gel and by its immunoreactivity to specific antibody with Western-blotting assay. To bio-functionally evaluate the fusion protein, Balb/c mice fed with high-fat diet (HFD) were given Tat-leptin, leptin or saline for 19 days. The immunohistochemical staining showed the increases in positive stains for the leptin in the region of hypothalamus of the HFD mice with either Tat-leptin or leptin as compared to saline group, but the staining intensity and frequency in the group with Tat-leptin were stronger and higher than those in the group with leptin. Furthermore, the most efficiency in preventing the body-weight gain caused by HFD was found in Tat-leptin group among these three groups. These results suggest that Tat-modified leptin may become a great potential candidate for the prevention or therapy of obese patients.
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Affiliation(s)
- C Zhang
- Engineering Research Center of Bioreactor and Pharmaceutical Development, Ministry of Education, Jilin Agricultural University, Changchun, China
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Abstract
The radon decay products lead-210 ((210)Pb) and polonium-210 ((210)Po) are known components of tobacco. China is the world's largest producer and consumer of cigarettes, yet no comprehensive published reports of the (210)Pb and (210)Po activity concentrations in Chinese cigarettes are available. Twelve brands of cigarettes that were commonly smoked within a group of 184 Chinese smokers were selected for (210)Pb and (210)Po activity analysis. For each brand, the tobacco from two cigarettes was isolated, dried, weighed, spiked with a (209)Po tracer for yield, and digested with concentrated HNO3, followed by HCl. The polonium in each digested solution was spontaneously deposited onto a nickel disc. The polonium activity was then counted using alpha spectroscopy. The mean (range) (210)Po activity for all brands was 23 (18-29) mBq cig(-1). The state of radioactive equilibrium between (210)Po and (210)Pb in each cigarette was verified in three brands of cigarettes. Cigarettes from two brands were smoked on a machine in order to estimate the fraction of (210)Pb and (210)Po inhaled. An average of 8% of the (210)Pb and 13% of the (210)Po in the tobacco of the cigarettes was transferred to the mainstream smoke. It is thus estimated that a person smoking 20 of these cigarettes per day in China would inhale a mean (range) of 37 (29-46) mBq d(-1) of (210)Pb and 60 (47-75) mBq d(-1) of (210)Po. Cigarette smoking in China may therefore be a large source of a person's daily intake of (210)Pb and (210)Po.
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Affiliation(s)
- Stephen Schayer
- New York University School of Medicine, Nelson Institute of Environmental Medicine, Old Forge Road, Tuxedo, NY 10987, USA
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Qu Q, Li X, An F, Jia G, Liu L, Watanabe-Meserve H, Koenig K, Cohen B, Costa M, Roy N, Zhong M, Chen LC, Liu S, Yan L. CrVI exposure and biomarkers: Cr in erythrocytes in relation to exposure and polymorphisms of genes encoding anion transport proteins. Biomarkers 2008; 13:467-77. [PMID: 18979639 DOI: 10.1080/13547500802099574] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
A total of 195 subjects, including 141 exposed workers and 54 farmers, were recruited in China to evaluate the usefulness of chromium (Cr) in erythrocytes as a biomarker of exposure to CrVI. The levels of Cr in red blood cells (RBC) were remarkably elevated even in a group of workers routinely exposed to CrVI as low as 5-15 microg m(-3) and showed a significant exposure-response trend over the exposure range from 0.002 to 1152 microg m(-3) (p <0.0001). Multiple linear regression analyses indicated that age and cigarette smoke were not associated with Cr in RBC. However, female subjects had lower Cr in RBC compared with their male counterparts for about the same exposure levels (p <0.05). The genotypes of band III, which encodes for anion transport protein and may regulate CrO4(-2) across cell membranes, were also identified and included for analysis. The ratios of Cr in RBC to CrVI exposure were higher in subjects with a wild genotype than in those who had heterozygous or homozygous variant alleles. However, the difference was not statistically significant probably due to the limited number of participating subjects. In addition, 15 of the 141 workers were selected for multiple exposure monitoring and blood sample collections to evaluate the inter- and intraindividual variations of Cr in RBC. Compared with the personal exposure levels, Cr in RBC had small intraindividual variations with a reliability coefficient of 0.88. The study suggests that Cr in RBC may serve as a sensitive and reliable biomarker for long-term exposure to CrVI.
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Affiliation(s)
- Qingshan Qu
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, NY 10987, USA.
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Hu Y, Zhou Z, Xue X, Li X, Fu J, Cohen B, Melikian AA, Desai M, Tang MS, Huang X, Roy N, Sun J, Nan P, Qu Q. Sensitive biomarker of polycyclic aromatic hydrocarbons (PAHs): urinary 1-hydroxyprene glucuronide in relation to smoking and low ambient levels of exposure. Biomarkers 2008; 11:306-18. [PMID: 16908438 DOI: 10.1080/13547500600626883] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The study was conducted in a Chinese population with occupational or environmental exposures to polycyclic aromatic hydrocarbons (PAHs). A total of 106 subjects were recruited from coke-oven workers (workers), residents in a metropolitan area (residents) and suburban gardeners (gardeners). All subjects were monitored twice for their personal exposures to PAHs. The biological samples were collected for measurements of 1-hydroxypyrene (1-OHP) and cotinine in urine. The geometric means of personal exposure levels of pyrene, benz(a)anthracene (BaA) and benzo(a)pyrene (BaP) in workers were 1.470, 0.978 and 0.805 microg m-3, respectively. The corresponding levels in residents were 0.050, 0.034 and 0.025 microg m-3; and those in gardeners were 0.011, 0.020 and 0.008 microg m-3, respectively. The conjugate of 1-OHP with glucuronide (1-OHP-G) is the predominant form of pyrene metabolite in urine and it showed strong associations with exposures not only to pyrene, but also to BaA, BaP and total PAHs. Most importantly, a significant difference in 1-OHP-G was even detected between the subgroups with exposures to BaP at < 0.010 and > 0.010 but < 0.020 microg m-3, suggesting that 1-OHP-G is a good marker that can be used for the risk assessment of BaP exposure at levels currently encountered in ambient air. Furthermore, multiple regression analyses of 1-OHP-G on PAHs exposure indicated that cigarette smoke was a major confounding factor and should be considered and adjusted for while using 1-OHP to estimate PAHs exposure.
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Affiliation(s)
- Y Hu
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, NY 10987, USA
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Hu Y, Li G, Xue X, Zhou Z, Li X, Fu J, Cohen B, Roy N, Li D, Sun J, Nan P, Tang MS, Qu Q. PAH-DNA adducts in a Chinese population: relationship to PAH exposure, smoking and polymorphisms of metabolic and DNA repair genes. Biomarkers 2008; 13:27-40. [PMID: 17896209 DOI: 10.1080/13547500701671895] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The present study was conducted in a Chinese population to evaluate the usefulness and sensitivity of PAH-DNA adduct as a biomarker of PAH exposure, and to examine the potential effects of smoking and polymorphisms of responsive genes on DNA adduct formation induced by PAH exposure. The polymorphisms of genes examined include GSTM1, GSTT1, CYP1A1, microsomal epoxide hydrolase (mEH) and excision repair cross-complementary group 2 (ERCC2). A total of 194 subjects with a broad range of PAH exposures were recruited, including 116 occupationally exposed workers, 49 metropolitan residents and 29 suburban gardeners. A significant exposure-response relationship was observed between PAH exposure and DNA adducts in leukocytes across the entire group of subjects (p < 0.0001). The levels of PAH-DNA adducts in the subgroup with lowest occupational exposure to PAHs (< 0.1 microg BaP m(-3)) was significantly higher than that in metropolitan residents and suburban gardeners. However, no significant difference was detected between residents and gardeners, with mean BaP concentrations of 0.028 and 0.011 microg m(-3), respectively. The polymorphisms of genes examined failed to show significant effects on PAH-induced adduct formation except ERCC2 Lys751Gln genotypes. A significantly higher level of PAH-DNA adduct was found in subjects with wild-type ERCC2 than those who have either heterozygous or homozygous variant alleles (p < 0.01). Smoking, age and gender did not substantially contribute to PAH-induced DNA adduct formation in this study. The study suggests that PAH-DNA adducts may serve as a reliable biomarker of PAH exposure in occupational settings but may not be sensitive enough to be used in populations with environmental exposures to PAHs.
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Affiliation(s)
- Yu Hu
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, NY 10987, USA
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Ouyang W, Hu Y, Li J, Ding M, Lu Y, Zhang D, Yan Y, Song L, Qu Q, Desai D, Amin S, Huang C. Direct evidence for the critical role of NFAT3 in benzo[a]pyrene diol-epoxide-induced cell transformation through mediation of inflammatory cytokine TNF induction in mouse epidermal Cl41 cells. Carcinogenesis 2007; 28:2218-26. [PMID: 17522069 DOI: 10.1093/carcin/bgm115] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Nuclear factor of activated T cell (NFAT)-3 is a member of the transcription factor NFAT family, which has been demonstrated to be responsible for the up-regulation of the pro-inflammatory cytokine tumor necrosis factor (TNF) in the immune system. Our most recent studies have also shown that TNF is able to induce cell transformation in mouse epidermal Cl41 cells by induction of cyclooxygenase-2 (COX-2) expression. To provide direct evidence for NFAT3 in the environmental carcinogen-caused carcinogenic effect, (+/-)-benzo[a]pyrene-7,8-diol-9,10-epoxide (B[a]PDE), an ultimate environmental carcinogen metabolized from benzo[a]pyrene, was utilized. We found that exposure of Cl41 cells to B[a]PDE was able to induce cell transformation in Cl41 cells, while specific knock-down of NFAT3 resulted in the dramatic inhibition of this cell transformation. The tumorigenicity of B[a]PDE-caused transformed cells was confirmed in nude mice, whereas the tumor formation of B[a]PDE-treated NFAT3 small interference RNA (siRNA) knock-down cells was significantly reduced. Further studies showed that the role of NFAT3 in B[a]PDE-caused cell transformation was mediated by up-regulation of its downstream targeted gene TNF. This conclusion was based on the findings that inhibition of NFAT3 activation by either FK506 or NFAT3 siRNA dramatically down-regulated the TNF induction upon B[a]PDE exposure, and that knock-down of TNF by its specific siRNA also led to abrogation of B[a]PDE-induced cell transformation in Cl41 cells and their tumorigenicity in nude mice. Collectively, these results provide direct evidence for the important role of NFAT3 activation in B[a]PDE-induced cell transformation by up-regulation of TNF expression in mouse epidermal Cl41 cells, further suggesting that B[a]PDE may exert its tumor promotion effect on skin carcinogenesis, at least partially, by inducing TNF expression.
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Affiliation(s)
- Weiming Ouyang
- Nelson Institute of Environmental Medicine, New York University School of Medicine, 57 Old Forge Road, Tuxedo, NY 10987, USA
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Yan Y, Li J, Ouyang W, Ma Q, Hu Y, Zhang D, Ding J, Qu Q, Subbaramaiah K, Huang C. NFAT3 is specifically required for TNF-α-induced cyclooxygenase-2 (COX-2) expression and transformation of Cl41 cells. J Cell Sci 2006; 119:2985-94. [PMID: 16803872 DOI: 10.1242/jcs.03014] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
NFAT family is recognized as a transcription factor for inflammation regulation by inducing the expression of proinflammatory cytokines, such as tumor necrosis factor-α (TNF-α), the key mediator of inflammation, which was reported to induce cell transformation in mouse epidermal Cl41 cells. In this study, we demonstrated that TNF-α was able to induce NFAT activation, as well as the expression of cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (iNOS). The induction of COX-2 by TNF-α was abolished by knockdown of NFAT3 with its siRNA, while the induction of iNOS was not effected. Moreover, TNF-α-induced anchorage-independent cell growth was significantly inhibited by NFAT3 siRNA and cyclosporine A, a chemical inhibitor for the calcineurin/NFAT pathway, which suggests the importance of NFAT3 in regulating TNF-α-induced anchorage-independent cell growth. Consequently, impairment of COX-2 by its siRNA or selective inhibitor also inhibited TNF-α-induced anchorage-independent cell growth. Taken together, our results indicate that NFAT3 plays an important role in the regulation of TNF-α-induced anchorage-independent cell growth, at least partially, by inducing COX-2 expression in Cl41 cells. These findings suggest that NFAT3/cyclooxygenase-2 act as a link between inflammation and carcinogenesis by being involved in the tumor promotion stage.
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Affiliation(s)
- Yan Yan
- Nelson Institute of Environmental Medicine, New York University School of Medicine, 57 Old Forge Road, Tuxedo, NY 10987, USA
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Zhou L, Rui JA, Wang SB, Chen SG, Qu Q, Chi TY, Wei X, Han K, Zhang N, Zhao HT. Clinicopathological features, post-surgical survival and prognostic indicators of elderly patients with hepatocellular carcinoma. Eur J Surg Oncol 2006; 32:767-72. [PMID: 16725304 DOI: 10.1016/j.ejso.2006.03.050] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2005] [Accepted: 03/15/2006] [Indexed: 01/02/2023] Open
Abstract
AIM Comprehensive data regarding elderly patients with hepatocellular carcinoma (HCC) were limited. The present study aims to widen the knowledge based on patients in China. METHODS Fifty-four elderly (> or =65 years) and 125 non-elderly HCC patients undergoing hepatectomy were enrolled in this retrospective study. Clinicopathological features and post-surgical survival were compared between two groups. Prognostic indicators of elderly patients were defined by uni- and multivariate analyses. RESULTS Contrast to non-elderly patients, the elderly presented significantly lower rates of HBsAg positivity, Child-Pugh grade A, alpha-fetoprotein (AFP) marked elevation, portal vein tumour thrombosis (PVTT), satellite nodule, and intrahepatic recurrence, smaller tumour sizes, earlier TNM staging and better histological differentiation. No significant differences were found in perioperative mortality rate and post-surgical survival between two groups. PVTT and Edmondson-Steiner grading were identified as independent prognostic indicators of both overall and disease-free survival by multivariate analysis, whereas Child-Pugh grading independently affected the overall survival. CONCLUSIONS HCC in the elderly seemed to be less HBV-associated, less progressive and less aggressive than that in the non-elderly. Hepatectomy for the elderly could make a satisfactory prognosis and be well tolerated. Some tumour-related factors independently predict the prognosis of elderly HCC patients, and their liver function status should be further valued.
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Affiliation(s)
- L Zhou
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100032, China.
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Hao C, Chen Z, Qu Q. ABR-018 Associated research between polycystic ovarian syndrome and the pentanucleotide (TTTTA)n microsatellite polymorphism in the CYP11a gene promoter. Reprod Biomed Online 2006. [DOI: 10.1016/s1472-6483(11)60441-0] [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: 10/14/2022]
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Liu XY, Hao C, Qu Q, Sun L. AL-002 Effect of the different exposure times of oocytes to spermatozoa on IVF and embryo transfer outcome. Reprod Biomed Online 2006. [DOI: 10.1016/s1472-6483(11)60492-6] [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: 10/14/2022]
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