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Xiong Y, Shen G, Shi L, Lin Y, Zhang HW, Li SL, Di Q, Chen CH, Cao JJ. [A case of intrarenal artery stenosis treated by transcathether segmental renal artery embolization]. Zhonghua Er Ke Za Zhi 2023; 61:742-744. [PMID: 37528020 DOI: 10.3760/cma.j.cn112140-20221214-01048] [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: 08/03/2023]
Affiliation(s)
- Y Xiong
- Department of Intervention and Hemangioma, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
| | - G Shen
- Department of Intervention and Hemangioma, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
| | - L Shi
- Department of Cardiology, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
| | - Y Lin
- Department of Cardiology, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
| | - H W Zhang
- Department of Cardiology, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
| | - S L Li
- Department of Intervention and Hemangioma, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
| | - Q Di
- Department of Intervention and Hemangioma, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
| | - C H Chen
- Department of Intervention and Hemangioma, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
| | - J J Cao
- Department of Intervention and Hemangioma, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
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Ren HH, Cheng Y, Wu F, Gu ZL, Cao JJ, Huang Y, Xue YG, Cui L, Zhang YW, Chow JC, Watson JG, Zhang RJ, Lee SC, Wang YL, Liu S. Spatiotemporal characteristics of ozone and the formation sensitivity over the Fenwei Plain. Sci Total Environ 2023; 881:163369. [PMID: 37030366 DOI: 10.1016/j.scitotenv.2023.163369] [Citation(s) in RCA: 1] [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] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 03/29/2023] [Accepted: 04/04/2023] [Indexed: 06/01/2023]
Abstract
High surface ozone (O3) levels affect human and environmental health. The Fenwei Plain (FWP), one of the critical regions for China's "Blue Sky Protection Campaign", has reported severe O3 pollution. This study investigates the spatiotemporal properties and the causes of O3 pollution over the FWP using high-resolution data from the TROPOspheric Monitoring Instrument (TROPOMI) from 2019 to 2021. This study characterizes spatial and temporal variations in O3 concentration by linking O3 columns and surface monitoring using a trained deep forest machine learning model. O3 concentrations in summer were 2-3 times higher than those found in winter due to higher temperatures and greater solar irradiation. The spatial distributions of O3 correlate with the solar radiation showing decreased trends from the northeastern to the southwestern FWP, with the highest O3 values in Shanxi Province and the lowest in Shaanxi Province. For urban areas, croplands and grasslands, the O3 photochemistry in summer is NOx-limited or in the transitional regime, while it is VOC-limited in winter and other seasons. Reducing NOx emissions would be effective for decreasing O3 levels in summer, while VOC reductions are necessary for winter. The annual cycle in vegetated areas included both NOx-limited and transitional regimes, indicating the importance of NOx controls to protect ecosystems. The O3 response to limiting precursors shown here is of importance for optimizing control strategies and is illustrated by emission changes during the 2020 COVID-19 outbreak.
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Affiliation(s)
- H H Ren
- School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China
| | - Y Cheng
- School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China; Key Laboratory of Aerosol Chemistry & Physics and State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Science, Xi'an, China.
| | - F Wu
- Key Laboratory of Aerosol Chemistry & Physics and State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Science, Xi'an, China
| | - Z L Gu
- School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China
| | - J J Cao
- Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
| | - Y Huang
- Key Laboratory of Aerosol Chemistry & Physics and State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Science, Xi'an, China
| | - Y G Xue
- Key Laboratory of Aerosol Chemistry & Physics and State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Science, Xi'an, China
| | - L Cui
- Key Laboratory of Aerosol Chemistry & Physics and State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Science, Xi'an, China
| | - Y W Zhang
- School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China
| | - J C Chow
- Division of Atmospheric Sciences, Desert Research Institute, Reno, NV, USA
| | - J G Watson
- Division of Atmospheric Sciences, Desert Research Institute, Reno, NV, USA
| | - R J Zhang
- Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
| | - S C Lee
- Department of Civil and Environmental Engineering, Research Center for Environmental Technology and Management, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China
| | - Y L Wang
- School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China
| | - S Liu
- School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China; Qingyang Eco-Environment Bureau of Chengdu, Chengdu, Sichuan, China
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Cao JJ, Di Q, Shen G, Li SL, Chen CH, Xiong Y, Jiao YH, Guo XF. [Clinical analysis of 4 acute ischemic stroke children treated with endovascular thrombectomy]. Zhonghua Er Ke Za Zhi 2023; 61:159-163. [PMID: 36720599 DOI: 10.3760/cma.j.cn112140-20220927-00844] [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: 02/02/2023]
Abstract
Objective: To assess the feasibility of endovascular thrombectomy (EVT) for the treatment of acute ischemic stroke (AIS) in children. Methods: Clinical data and follow-up information of 4 AIS children who received EVT in the Department of Intervention & Hemangioma at the Children's Hospital of the Capital Institute of Pediatrics from December 2020 to June 2021 were collected retrospectively. The vascular recanalization after EVT was assessed by the modified thrombolysis in cerebral infarction (mTICI) score. Efficacy outcomes were assessed with initial and postprocedural Pediatric National Institutes of Health Stroke Scale (PedNIHSS) score, and the modified Rankin scale (mRS) score at 3 and 6 months after treatment. Safety assessments included perioperative complications and intracranial hemorrhage post-treatment. Results: A total of 5 EVT treatment were performed on 4 children with AIS, of whom 3 were male. The age of onset was 4.6, 13.8, 7.8, 8.0, 8.9 years, respectively. The time from symptom onset to initiation of EVT was 19.0, 25.0, 22.0, 4.0, 16.5 hours, respectively and all patients achieved successful recanalization of the vessel after EVT (mTICI≥2b). The PedNIHSS score was 39, 14, 25, 39, 24 before treatment and decreased to 8, 1, 12, 39, 5 at discharge. All the procedures were performed with no perioperative complications. Only 1 patient with congenital heart disease had a recurrent AIS with malignant brain oedema and brain hernia. Although the occluded vessels were successfully recanalized,the symptoms were not improved and this patient died after treatment abandonment. The other 3 patients achieved good recovery at 6 months postoperatively. The mRS score of 3 patients was 3, 1, 2 at 3 months after EVT and decreased to 2, 1, 1 at 6 months. Conclusion: EVT treatment may be feasible and safe for pediatric AIS due to large vessel occlusion even when the treatment was initiated 6 hours post stroke, but children with heart disease may have a dismal prognosis.
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Affiliation(s)
- J J Cao
- Department of Intervention & Hemangioma, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
| | - Q Di
- Department of Intervention & Hemangioma, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
| | - G Shen
- Department of Intervention & Hemangioma, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
| | - S L Li
- Department of Intervention & Hemangioma, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
| | - C H Chen
- Department of Intervention & Hemangioma, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
| | - Y Xiong
- Department of Intervention & Hemangioma, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
| | - Y H Jiao
- Department of Intervention & Hemangioma, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
| | - X F Guo
- Department of Intervention & Hemangioma, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
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Yuan NN, Xu HB, Liu SC, Wang Y, Wang T, Yi TC, Chen J, Zhang Y, Zhu YT, Li LJ, Li JP, Cao JJ, Huang W. [Impact of exposure to ambient fine particulate matter-bound polycyclic aromatic hydrocarbons on blood thrombogenicity in adults]. Zhonghua Yu Fang Yi Xue Za Zhi 2022; 56:902-911. [PMID: 35899341 DOI: 10.3760/cma.j.cn112150-20210924-00923] [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: 06/15/2023]
Abstract
Objective: To investigate the effects of exposure to ambient fine particulate matter-bound polycyclic aromatic hydrocarbons on blood coagulation in adults. Methods: A total of 73 adult volunteers were recruited in a cohort study and had four clinical visits from November 2014 to January 2016. Blood samples were obtained and used to measure biomarkers of blood thrombogenicity, including soluble CD40 Ligand (sCD40L), soluble P-selection (sCD62P) and Fibrinogen (FIB). White blood cell (WBC), 8-Hydroxy-2'-Deoxyguanosine (8-OHdG), matrix metalloproteinase-2 (MMP-2) and HDL cholesterol efflux capacity (HDL-CEC) were also determined. Daily concentrations of ambient fine particulate matter-bound polycyclic aromatic hydrocarbons (PAHs) were measured throughout the study period, and positive matrix factorization (PMF) approach was used to identity PAHs sources. Linear mixed-effect models including single-pollutant model, two-pollutant model and stratification analysis were constructed to estimate the effects of exposure to ambient fine particulate matter-bound PAHs on blood thrombogenicity in adults after adjusting for potential confounders. Results: The mean age of participants was (23.3±5.4) years. During the study period, the median level of PM2.5-bound PAHs was (55.29±74.99) ng/m3. Six sources of PM2.5-bound PAHs were identified by PMF, with traffic sources contributing more than 50%. The linear mixed-effect model showed that PAHs exposure had a significant effect on elevated blood thrombogenicity. Significant elevations in sCD40L, sCD62P and FIB associated with per IQR increase (60.33 ng/m3) in exposure to PAHs were 14.36% (95%CI:6.94%-22.28%), 9.33% (95%CI: 1.71%-17.51%) and 2.07% (95%CI:0.44%-2.07%) at prior 5 days, respectively. Blood thrombogenicity levels were significantly and positively correlated with source-specific PAHs, especially gasoline vehicle emissions, diesel vehicle emission and coal burning at prior 1 or 5 days. Stronger associations between PAHs and increased blood thrombogenicity were found in participants with high plaque vulnerability, reduced HDL function, and high levels of inflammation and oxidative stress. Conclusion: Acute exposure to ambient fine particulate matter-bound PAHs, especially PAHs from traffic sources may promote blood thrombogenicity in adults, and PAHs have stronger effects on participants with reduced vascular function and high levels of inflammation and oxidative stress.
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Affiliation(s)
- N N Yuan
- Department of Occupational and Environmental Health, Peking University School of Public Health, Beijing 100191, China
| | - H B Xu
- Department of Occupational and Environmental Health, Peking University School of Public Health, Beijing 100191, China
| | - S C Liu
- Division of Cardiology, Peking University First Hospital, Beijing 100034, China
| | - Y Wang
- Department of Prevention and Health Care, Hospital of Health Science Center, Peking University, Beijing 100191, China
| | - T Wang
- Department of Occupational and Environmental Health, Peking University School of Public Health, Beijing 100191, China
| | - T C Yi
- Division of Cardiology, Peking University First Hospital, Beijing 100034, China
| | - J Chen
- Department of Occupational and Environmental Health, Peking University School of Public Health, Beijing 100191, China
| | - Y Zhang
- Department of Occupational and Environmental Health, Peking University School of Public Health, Beijing 100191, China
| | - Y T Zhu
- Department of Occupational and Environmental Health, Peking University School of Public Health, Beijing 100191, China
| | - L J Li
- Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
| | - J P Li
- Division of Cardiology, Peking University First Hospital, Beijing 100034, China
| | - J J Cao
- Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
| | - W Huang
- Department of Occupational and Environmental Health, Peking University School of Public Health, Beijing 100191, China
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Lian JY, Ye PP, Cao JJ, Chen D, Wang TT, Si T, Yuan JJ, Lu Y. [Prognostic factors of autologous hematopoietic stem cell transplantation in intermediate-risk acute myeloid leukemia patients with minimal residual disease negativity]. Zhonghua Nei Ke Za Zhi 2022; 61:673-677. [PMID: 35673748 DOI: 10.3760/cma.j.cn112138-20210820-00570] [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: 06/15/2023]
Abstract
To explore prognostic factors in intermediate-risk acute myeloid leukemia (AML) patients with minimal residual disease (MRD) negativity (MRD<0.1%,MRD-)receiving autologous hematopoietic stem cell transplantation (auto-HSCT).A total of 59 intermediate-risk AML patients with MRD-were treated with auto-HSCT from January 2015 to September 2021 at Affiliated People's Hospital of Ningbo University. The clinical data and laboratory results were collected retrospectively. Efficacy, clinical outcome and prognostic factors were analyzed. Univariate analysis was conducted by using log-rank test, the multivariate analysis by Cox proportional risk model.Among 59 patients, there were 27 males and 32 females with median age of 55 (31-69) years old.The median follow-up was 761(317-1 861)days. The 2-year overall survival (OS) rate and event-free survival (EFS) rate were 76.1%±11.4% and 73.4%±11.6% respectively.The univariate analysis showed that age older than 50 years, TET2 gene mutation (TET2+), achieving MRD negativity over 30 days (MRD30+) were unfavorable factors of OS (χ2=6.20, 33.20, 7.18;P=0.013,<0.001, 0.007). TET2+, WT1 gene mutation (WT1+), CD34+cells<2×106/kg, MRD30+were negative factors of EFS (χ2=17.29, 4.47, 3.94, 9.393;P<0.001, 0.035, 0.047, 0.002).Multivariate analysis showed that MRD30+, TET2+ were independent prognostic factors of OS and EFS (OS:HR=9.251, 25.839, P=0.036, 0.001;EFS:HR=5.851, 9.199, P=0.043, 0.002). Intermediate-risk AML patients with MRD30+or TET2+ have very poor prognosis after auto-HSCT. Alternative regimens should be investigated.
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Affiliation(s)
- J Y Lian
- Department of Hematology,the Affiliated People's Hospital of Ningbo University, Ningbo 315040, China
| | - P P Ye
- Department of Hematology,the Affiliated People's Hospital of Ningbo University, Ningbo 315040, China
| | - J J Cao
- Department of Hematology,the Affiliated People's Hospital of Ningbo University, Ningbo 315040, China
| | - D Chen
- Department of Hematology,the Affiliated People's Hospital of Ningbo University, Ningbo 315040, China
| | - T T Wang
- Department of Hematology,the Affiliated People's Hospital of Ningbo University, Ningbo 315040, China
| | - T Si
- Department of Hematology,the Affiliated People's Hospital of Ningbo University, Ningbo 315040, China
| | - J J Yuan
- Department of Hematology,the Affiliated People's Hospital of Ningbo University, Ningbo 315040, China
| | - Y Lu
- Department of Hematology,the Affiliated People's Hospital of Ningbo University, Ningbo 315040, China
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Teng H, Hong YR, Li H, Cao JJ, Han GG, Zhang H, Dong LJ. [Pyroptosis of lens epithelial cells in diabetic cataract]. Zhonghua Yan Ke Za Zhi 2022; 58:354-359. [PMID: 35511662 DOI: 10.3760/cma.j.cn112142-20211021-00493] [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: 06/14/2023]
Abstract
Objective: To investigate the possible role of pyroptosis of lens epithelial cells (LECs) in the occurrence of diabetic cataract. Methods: Experimental research. A total of 70 cataract lens anterior capsule and aqueous humor samples were obtained from 70 eyes (70 patients) with cataracts in the operation room of Tianjin Medical University Eye Hospital between March 2020 and November 2020. Patients were divided into the non-diabetic and diabetic groups, with 35 patients (35 eyes) in each group. The expressions of Nod like receptor protein 3 (NLRP3), cysteine-aspartic proteases 1 (caspase-1) and Gasdermin D protein (GSDMD) in the lens anterior capsule were detected by Western blotting, real-time quantitative PCR and immunohistochemical staining. Interleukin (IL)-1β and IL-18 inaqueous humor were detected by enzyme-linked immunosorbent assay (ELISA). The independent sample t-test was used for statistical analysis. Results: The age was (70±9) years in the diabetic group and (71±8) years in the non-diabetic group. There was no significant difference in age and gender distribution between the two groups (both P>0.05). Western blotting analysis showed that the expression levels of NLRP3, caspase-1 and GSDMD protein in the LECs of anterior capsule were 1.11±0.06, 0.95±0.04 and 0.39±0.03 in the diabetic group, significantly higher than those of the non-diabetic group (0.81±0.04, 0.33±0.11 and 0.16±0.04; t=4.38, 5.36, 4.63; all P<0.05). Real-time quantitative PCR showed that the levels of NLRP3, caspase-1 and GSDMD mRNA in the LECs of anterior capsule were 1.98±0.07, 54.36±4.88 and 6.98±1.18 in the diabetic group, significantly higher than those of the non-diabetic group (1.38±0.16, 15.31±1.51 and 2.41±0.95; t=3.49, 7.64, 3.00, all P<0.05). Immunohistochemical staining showed that the average gray values of NLRP3, caspase-1 and GSDMD in the diabetic group were higher than those of the non-diabetic group (all P˂0.01). ELISA showed that the levels of IL-1β and IL-18 in the aqueous humor were (4.178±0.028) fg/L and (20.983±0.018) fg/L in the diabetic group, significantly higher than those of the non-diabetic group [(4.063±0.017) fg/L and (20.509±0.073) fg/L; t=20.63, 37.21; both P˂0.01]. Conclusion: Caspase-1-mediated pyroptosis of LECs and the release of inflammatory mediators induced by pyroptosis may be involved in the occurrence and development of diabetic cataract.
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Affiliation(s)
- H Teng
- Tianjin Medical University Eye Hospital, Eye Institute and School of Optometry, Tianjin Branch of National Clinical Research Center for Ocular Disease, Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin 300384, China
| | - Y R Hong
- Tianjin Medical University Eye Hospital, Eye Institute and School of Optometry, Tianjin Branch of National Clinical Research Center for Ocular Disease, Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin 300384, China
| | - H Li
- Tianjin Medical University Eye Hospital, Eye Institute and School of Optometry, Tianjin Branch of National Clinical Research Center for Ocular Disease, Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin 300384, China
| | - J J Cao
- Tianjin Medical University Eye Hospital, Eye Institute and School of Optometry, Tianjin Branch of National Clinical Research Center for Ocular Disease, Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin 300384, China
| | - G G Han
- Tianjin Eye Hospital, Nankai University Affiliated Eye Hospital, Clinical College of Ophthalmology of Tianjin Medical University, Tianjin Eye Institute, Tianjin Key Laboratory of Ophthalmology and Visual Science, Tianjin 300020, China
| | - H Zhang
- Tianjin Medical University Eye Hospital, Eye Institute and School of Optometry, Tianjin Branch of National Clinical Research Center for Ocular Disease, Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin 300384, China
| | - L J Dong
- Tianjin Medical University Eye Hospital, Eye Institute and School of Optometry, Tianjin Branch of National Clinical Research Center for Ocular Disease, Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin 300384, China
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Xiao TT, Ouyang ZW, Liu XC, Cao JJ, Wang ZX, Tong W. Angular dependence of spin-flop transition in triangular lattice antiferromagnet Cu 2(OH) 3Br. J Phys Condens Matter 2022; 34:275804. [PMID: 35453130 DOI: 10.1088/1361-648x/ac69a0] [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] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Accepted: 04/22/2022] [Indexed: 06/14/2023]
Abstract
We report angular dependence of spin-flop transition in triangular lattice antiferromagnet Cu2(OH)3Br by angle-dependent magnetization and ESR measurements. The results show that the antiferromagnetic easy magnetization axis is the diagonal direction (θ= 45°) of theac*plane, i.e., the orientation of Cu1 spins based on the magnetic structure (2020Phys. Rev. Lett.125037204), whereas the spin-flop axis is thebaxis. A phenomenological model is proposed to describe the angle-dependent spin-flop transitions. Based on this model, Cu1 spins are sensitive to external magnetic field, while Cu2 spins are robust against to the field, showing partial decoupling. The model is expected to be used in other uniaxial antiferromagnets with a more general easy axis and complex spin-flop transitions.
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Affiliation(s)
- T T Xiao
- Wuhan National High Magnetic Field Center and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Z W Ouyang
- Wuhan National High Magnetic Field Center and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - X C Liu
- Wuhan National High Magnetic Field Center and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - J J Cao
- Wuhan National High Magnetic Field Center and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Z X Wang
- Wuhan National High Magnetic Field Center and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - W Tong
- Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
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Bai J, Zhang M, Cao XS, Cao JJ. [The value of serum cystatin C for the evaluation of renal function damage in patients with proliferative diabetic retinopathy]. Zhonghua Yi Xue Za Zhi 2021; 101:2400-2404. [PMID: 34404134 DOI: 10.3760/cma.j.cn112137-20210522-01184] [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: 11/05/2022]
Abstract
Objective: To investigate the value of serum cystatin C for the evaluation of renal function damage in patients with proliferative diabetic retinopathy (PDR). Methods: The clinical data of PDR patients treated in ophthalmic wards of Beijing Tongren Hospital from July 2019 to January 2021 were retrospectively analyzed. The estimated glomerular filtration rate (eGFR) was calculated by the abbreviated Modification of Diet in Renal Disease (MDRD) study equation. Based on the eGFR level, the patients were divided into no obvious renal function damage group [≥ 60 ml·min⁻¹·(1.73 m2)⁻1] and renal inadequacy group [<60 ml·min⁻¹·(1.73 m2)⁻1]. The clinical characteristics between the two groups were compared. Multivariate logistic regression analysis was performed to identify the relevant factors of renal inadequacy. The value of cystatin C to predict the renal inadequacy was calculated by the receiver operating characteristic (ROC) curves. Results: A total of 1 009 patients [593 males and 416 females; mean age: (52±12) years] were finally included in the study, with 192 cases (19.0%) and 817 cases (81.0%) in renal inadequacy group and no obvious renal function damage group, respectively. There were no significant statistically differences in gender, age, diastolic blood pressure, body mass index, fasting blood glucose and low-density lipoprotein between the two groups (all P>0.05). The systolic blood pressure, blood urea nitrogen, creatinine, uric acid, triglyceride, cholesterol and cystatin C were higher in the renal inadequacy group than those of no obvious renal function damage group (all P<0.05). However, the glycosylated hemoglobin, albumin and high-density lipoprotein were lower in the renal inadequacy group (all P<0.05). Multivariate logistic regression analysis showed that serum creatinine (OR=1.189, 95%CI: 1.101-1.284, P<0.001) and cystatin C (OR=3.175, 95%CI: 1.272-7.923, P=0.013) were independent risk factors for renal inadequacy in PDR patients. The ROC curve showed that cystatin C had a predictive value for renal inadequacy, with an area under the curve (AUC) of 0.966 (95%CI: 0.952-0.979). Meanwhile, the cutoff value was 1.315 mg/L, and the Youden index was 0.826, with the sensitivity of 94.3% and specificity of 88.4%. Conclusion: Serum cystatin C can be used as an important laboratory indicator to evaluate the renal impairment in PDR patients.
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Affiliation(s)
- J Bai
- Department of Comprehensive Internal Medicine, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - M Zhang
- Department of Nephrology, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - X S Cao
- Department of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology and Visual Science Key Lab, Beijing 100730, China
| | - J J Cao
- Department of Laboratory Medicine, Beijing Tongren hospital, Capital Medical University, Beijing 100730, China
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Cao JJ, Zhao SJ, Gao CY, Liu W, Cai HX, Ma PZ. [Association between healthy lifestyle and risk of rehospitalization in male or female patients with chronic heart failure]. Zhonghua Xin Xue Guan Bing Za Zhi 2021; 49:54-59. [PMID: 33429487 DOI: 10.3760/cma.j.cn112148-20201127-00940] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the association between healthy lifestyle and risk of rehospitalization in male or female patients with chronic heart failure (CHF). Methods: Discharged patients with CHF of Henan Provincial People's Hospital Collaboration Hospital were recruited in our study from January 1,2017 to December 31, 2018. The basic information of patients were collected through the electronic medical record system,the questionnaires were used to collect the related influencing factors. Healthy lifestyle includes 4 items, namely non-smoking, moderate exercise, healthy body mass index (BMI) and reasonable diet.Multivariate logistic regression was used to analyze the association between healthy lifestyle and the risk of rehospitalization of CHF patients of different genders. Results: A total of 2 697 patients with CHF were enrolled in this study, including 1 308 male patients(621 rehospitalizations,687 controls)and 1 389 female patients(684 rehospitalizations,705 controls).Among male patients, there was no significant difference in age, residence, marital status, education level, average monthly income, and medical insurance between the rehospitalization group and the control group (all P>0.05). Among female patients, there was no significant difference in age, residence, marital status, education level, average monthly income, and medical insurance between the rehospitalization group and the control group (all P>0.05). Whether in male or female patients with CHF, we found that patients with 4 healthy lifestyles were associated with reduced risk of rehospitalization: male patients OR=0.34, 95%CI 0.11-0.99, P=0.002,female patients OR=0.27, 95%CI 0.13-0.79, P=0.012. A combination of non-smoking and any other 2 healthy lifestyles was associated with reduced risk of rehospitalization: male patients with no smoking, moderate exercise, healthy BMI, OR=0.32, 95%CI 0.11-0.99, P=0.043; female patients OR=0.28, 95%CI 0.12-0.93, P=0.032;male patients with no smoking, moderate exercise, reasonable diet OR=0.42, 95%CI 0.24-0.98, P=0.044,female patients OR=0.40, 95%CI 0.12-0.94, P=0.031;male patients with no smoking, healthy BMI, reasonable diet OR=0.31, 95%CI 0.21-0.92, P=0.039,female patients OR=0.27,95%CI 0.11-0.87, P=0.014. In female patients with CHF, the combination of non-smoking and moderate sports was associated with reduced risk of hospitalization (OR=0.23, 95%CI 0.19-0.97, P=0.038), while no similar results were seen in male patients (OR=0.65, 95%CI 0.33-1.84, P=0.315). Conclusion: Healthy lifestyle is associated with reduced risk of rehospitalization in patients with CHF, and the related healthy lifestyle and its combination may differ between male and female patients.
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Affiliation(s)
- J J Cao
- Department of Pharmacy,Henan Provincial People's Hospital, Department of Pharmacy,Zhengzhou University People's Hospital, Zhengzhou 450003,China
| | - S J Zhao
- Department of Pharmacy,Henan Provincial People's Hospital, Department of Pharmacy,Zhengzhou University People's Hospital, Zhengzhou 450003,China
| | - C Y Gao
- Department of Coronary Heart Disease, Fuwai Centeral China Cardiovascular Hospital,Zhengzhou 451464,China
| | - W Liu
- School of Pharmacy,Zhengzhou University, Zhengzhou 450001,China
| | - H X Cai
- Department of Pharmacy,Henan Provincial People's Hospital, Department of Pharmacy,Zhengzhou University People's Hospital, Zhengzhou 450003,China
| | - P Z Ma
- Department of Pharmacy,Henan Provincial People's Hospital, Department of Pharmacy,Zhengzhou University People's Hospital, Zhengzhou 450003,China
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Huan H, Liu C, Yang Z, Bao JL, Liu C, Wang JT, Zhang L, Wang CH, Ci RSP, Tu QL, Ren T, Xu D, Zhang HJ, Li XG, Kang N, Li XP, Wu YH, Pu X, Tan YJ, Cao JJ, Luo SWQ, Luo SQP, Zhuo M, Qi XL. [Current situation of screening, prevention and treatment of bleeding esophageal varices in cirrhotic portal hypertension in Tibet region: a multicenter study]. Zhonghua Gan Zang Bing Za Zhi 2020; 28:737-741. [PMID: 33053972 DOI: 10.3760/cma.j.cn501113-20200615-00318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Objective: To investigate and analyze the current situation, screening, clinical characteristics, prevention and treatment of bleeding esophageal varices in cirrhotic patients with portal hypertension in Tibet region. Methods: Clinical data of cirrhotic patients with portal hypertension through March 2017 to February 2020 from Tibet region were collected and analyzed retrospectively. Results: 511 cases with liver cirrhosis were included in the study, of which 185 cases (36.20%) had compensated cirrhosis and 326 cases (63.80%) had decompensated cirrhosis. Further analysis of the etiological data of liver cirrhosis showed that 306 cases (59.88%) were of chronic hepatitis B, 113 cases (22.11%) of alcoholic liver disease, and 68 cases (13.31%) of chronic hepatitis B combined with alcoholic liver disease. Among patients with compensated liver cirrhosis, 48 cases (25.95%) underwent endoscopic examination of which 33 diagnosed as high-risk variceal bleeding. However, none of these 33 cases had received non-selective β-blocker therapy, and only four patients had received endoscopic variceal banding therapy. Among patients with decompensated liver cirrhosis, 83 cases (25.46%) had a history of upper gastrointestinal bleeding, 297 cases (91.10%) had ascites, 23 cases (7.05%) had hepatic encephalopathy, and 3 cases (0.92%) had hepatorenal syndrome. Among the patients with a history of upper gastrointestinal bleeding, 42 cases (50.60%) had received secondary preventive treatment for bleeding esophageal varices, including 39 cases of endoscopic treatment, 1 case of endoscopic combined drug treatment, 3 cases of interventional treatment, and 2 cases of surgical treatment. Conclusion: Chronic hepatitis B and alcoholic liver diseases are the main causes of liver cirrhosis in Tibet region. Moreover, this region lacks screening, prevention and treatment for bleeding esophageal varices in cirrhotic patients with portal hypertension. Therefore, it is necessary to increase the screening of high-risk groups to prevent and improve the first-time bleeding, and promote multidisciplinary team to prevent and treat re-bleeding.
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Affiliation(s)
- H Huan
- Department of Gastroenterology, Hospital of Chengdu Office of People's Government of Tibetan Autonomous Region, Chengdu 610041, China
| | - C Liu
- Department of Gastroenterology, Hospital of Chengdu Office of People's Government of Tibetan Autonomous Region, Chengdu 610041, China
| | - Z Yang
- Department of Hepatology, The Third People's Hospital of Tibet Autonomous Region, Lasa 850000, China
| | - J L Bao
- Department of Gastroenterology,Shannan People's Hospital, Shannan 856000, China
| | - C Liu
- CHESS Center, Institute of Portal Hypertension, The First Hospital of Lanzhou University, Lanzhou 730000, China
| | - J T Wang
- CHESS Center, Institute of Portal Hypertension, The First Hospital of Lanzhou University, Lanzhou 730000, China
| | - L Zhang
- Beijing Tsinghua Changgung Hospital, Tsinghua University, Beijing 102218, China
| | - C H Wang
- Department of Gastroenterology, The Second People's Hospital of Tibet Autonomous Region, Lasa 850000, China
| | - R S P Ci
- Department of Internal Medicine, Naqu Tibetan Hospital, Naqu 852000, China
| | - Q L Tu
- Department of Gastroenterology, Hospital of Chengdu Office of People's Government of Tibetan Autonomous Region, Chengdu 610041, China
| | - T Ren
- Department of Gastroenterology, Hospital of Chengdu Office of People's Government of Tibetan Autonomous Region, Chengdu 610041, China
| | - D Xu
- CHESS Center, Institute of Portal Hypertension, The First Hospital of Lanzhou University, Lanzhou 730000, China
| | - H J Zhang
- CHESS Center, Institute of Portal Hypertension, The First Hospital of Lanzhou University, Lanzhou 730000, China
| | - X G Li
- CHESS Center, Institute of Portal Hypertension, The First Hospital of Lanzhou University, Lanzhou 730000, China
| | - N Kang
- CHESS Center, Institute of Portal Hypertension, The First Hospital of Lanzhou University, Lanzhou 730000, China
| | - X P Li
- Department of Gastroenterology, Hospital of Chengdu Office of People's Government of Tibetan Autonomous Region, Chengdu 610041, China
| | - Y H Wu
- Department of Gastroenterology, Hospital of Chengdu Office of People's Government of Tibetan Autonomous Region, Chengdu 610041, China
| | - X Pu
- Department of Gastroenterology, Hospital of Chengdu Office of People's Government of Tibetan Autonomous Region, Chengdu 610041, China
| | - Y J Tan
- Department of Gastroenterology, Hospital of Chengdu Office of People's Government of Tibetan Autonomous Region, Chengdu 610041, China
| | - J J Cao
- Medical Administration, Ali District Health and Safety Commission, Ali 859000, China
| | - S W Q Luo
- Department of Internal Medicine, Naqu Tibetan Hospital, Naqu 852000, China
| | - S Q P Luo
- Department of Pediatrics, Ali District People's Hospital, Ali 859000, China
| | - M Zhuo
- Department of Gastroenterology, Lasa People's Hospital, Lasa 850000, China
| | - X L Qi
- CHESS Center, Institute of Portal Hypertension, The First Hospital of Lanzhou University, Lanzhou 730000, China
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Xu HM, He KL, Feng R, Shen ZX, Cao JJ, Liu SX, Ho KF, Huang RJ, Guinot B, Wang QY, Zhou JM, Shen MX, Xiao S, Zhou BH, Sonke JE. Metallic elements and Pb isotopes in PM 2.5 in three Chinese typical megacities: spatial distribution and source apportionment. Environ Sci Process Impacts 2020; 22:1718-1730. [PMID: 32672296 DOI: 10.1039/d0em00174k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Heavy metal pollution in fine particulate matter (PM2.5) is a serious environmental and health concern in China, particularly during winter. Here, we detected 40 elements in 24 h integrated daily PM2.5 samples collected in January 2014 from three typical Chinese metropolises (Beijing, Changchun, and Chengdu) to reflect elemental spatial variations, local sources, and regional transport. The measured elemental concentrations in Changchun were 11.1% and 48.4% higher than those in Beijing and Chengdu, respectively. Thus, PM2.5 from Changchun exhibited high levels and diversity in the elemental profile (characterized by high concentrations of industrial emission elemental markers). The results of elemental ratios and Pb isotopes proved that, except for a coal combustion source, vehicular emissions contributed more to PM2.5 heavy metals in Beijing than in the other two cities; Changchun PM2.5 elements received large contributions from industrial sources, including iron and steel manufacturing, and automobile industry. Moreover, crustal dust from long-range transport of regional air masses from the northwest regions of China played a crucial role in determining elemental levels in Beijing and Changchun, accounting for more than 50% of source intensity. However, a specific dominant source was not determined in Chengdu; the contribution of anthropogenic dust, mainly from construction activities, needs to be paid attention in Chengdu eastern area. This study contributed to enhancing our understanding of elemental spatial distribution characteristics and sources and to setting more judicious standards and strategies for PM2.5 bound heavy metals in China.
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Affiliation(s)
- H M Xu
- Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an, China.
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12
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Cao JJ, Ji XN, Mao YY, Zhang PP, Liu WT, Zhang HZ, Ding N, Chen Q. [Clinical and genetic characteristics of children with STXBP1 encephalopathy]. Zhonghua Er Ke Za Zhi 2020; 58:493-498. [PMID: 32521962 DOI: 10.3760/cma.j.cn112140-20191028-00683] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Objective: To investigate the clinical and genetic characteristics of developmental and epileptic encephalopathy (DEE) caused by syntaxin-binding protein 1 (STXBP1) gene mutation. Methods: The clinical data, gene variation and treatment outcome of 15 children with STXBP1 encephalopathy admitted to Children's Hospital Affiliated to Capital Institute of Pediatrics from January 2014 to June 2019 were analyzed retrospectively. Results: Among 15 patients, 11 were male and 4 were female, age ranged from 2 months to 69 months. The clinical manifestations of 14 children were epilepsy and developmental delay (DD) and the remaining one showed developmental delay without seizure. The onset age of epilepsy ranged from two days to 19 months and 11 of them experienced the first attack before 1 year of age. The common seizure types were epileptic spasms and tonic seizures. Seven patients were diagnosed with Ohtahara syndrome or West syndrome. Epileptic form discharges were observed in the interictal electroencephalograms (EEG) of 11 patients, including multifocal discharges, suppression-burst and hypsarrhythmia. The brain magnetic resonance imaging of 7 children were abnormal, including myelin dysplasia, less white matter, lack of corpus callosum or hypoplasia. The follow-up time ranged from 2 months to 57 months, after the last follow-up, 3 cases were seizure free, 6 children showed partial response and the other 5 patients had no response on multitherapy. Six of 8 patients showed good responses to levetiracetam (LEV) monotherapy or in combination with other antiepileptic drugs (AEDs). Vigabatrin (VGB) was applied to 5 patients with epileptic spasms and 4 of them showed response. All patients showed different degrees of developmental delay while four of them showed autistic features. STXBP1 gene mutations were identified in all cases and there were 15 types of gene variations, including 8 missense mutations, 1 nonsense mutation, 5 frame shift mutations and 1 complex mutation. Five novel mutations were unreported before, including c.1193A>G, c.172delG, c.1769C>T, c.1038_1039delCC, c.348_351dupTGAA. Conclusions: Development delay and epilepsy are the major and independent clinical phenotypes in children with STXBP1 encephalopathy. The variation of STXBP1 gene is mainly de novo. Levetiracetam and vigabatrin may be more effective in epilepsy control than other AEDs.
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Affiliation(s)
- J J Cao
- Department of Neurology, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
| | - X N Ji
- Department of Neurology, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
| | - Y Y Mao
- Department of Neurology, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
| | - P P Zhang
- Department of Neurology, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
| | - W T Liu
- Department of Neurology, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
| | - H Z Zhang
- Department of Neurology, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
| | - N Ding
- Department of Neurology, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
| | - Q Chen
- Department of Neurology, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
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13
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Pei RZ, Lu Y, Zhang PS, Liu XH, Chen D, Du XH, Sha KY, Li SY, Cao JJ, Chen LG, Zhuang XX, Tang SH. [Breakthrough of invasive fungal disease with posaconazole as primary prophylaxis after induction chemotherapy for acute myeloid leukemia]. Zhonghua Nei Ke Za Zhi 2020; 59:213-217. [PMID: 32146748 DOI: 10.3760/cma.j.issn.0578-1426.2020.03.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the breakthrough incidence of invasive fungal disease(IFD) and side effects of posaconazole as primary prophylaxis during induction chemotherapy for acute myeloid leukemia(AML). Methods: A total of 206 newly diagnosed AML patients admitted to our department during January 2016 and December 2018 were enrolled in the study. Exclusive criteria were as followings including patients diagnosed as acute promyelocytic leukemia; those who received intravenous antifungal therapy after admission or had history of IFD one month before induction chemotherapy, or those with functional insufficiency of vital organs and those older than 65. Forty-seven patients received posaconazole (posaconazole group), 61 cases received voriconazole (voriconazole group) and 98 cases did not receive any prophylaxis (control group) during induction chemotherapy. Prophylactic efficacy and safety between posaconazole and voriconazole were compared. Results: During induction chemotherapy, five possible cases of IFD occurred in posaconazole group (10.6%); while 11 cases (18.0%) were in voriconazole group including 7 possible, 3 probable and 1 proven. Thirty-five cases (35.7%) in control group were diagnosed as IFD including 19 possible, 11 probable and 5 proven ones. The incidences of IFD in posaconazole and voriconazole group were significantly lower than that in control group (P<0.05). The difference of posaconazole group and voriconazole group was not significant (P>0.05). The reported adverse events in posaconazole group were significantly lower than those in voriconazole group [12.8%(6/47) vs. 32.8%(20/61), P<0.05]. Conclusions: Posaconazole and voriconazole decrease IFD as primary prophylaxis during induction chemotherapy in patients with AML. The prophylactic effect of IFD with posaconazole is similar as voriconazole, but posaconazole shows better safety.
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Affiliation(s)
- R Z Pei
- Department of Hematology, Ningbo Yinzhou People's Hospital, Ningbo 315040, Zhejiang Province, China
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14
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Chen LG, Pei RZ, Lu Y, Zhang PS, Liu XH, Du XH, Chen D, Cao JJ, Li SY. FLT3 and FLT3-ITD gene mutations and prognosis in patients with acute myeloid leukemia. J BIOL REG HOMEOS AG 2019; 33:1855-1861. [PMID: 31718764 DOI: 10.23812/19-182-l] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Affiliation(s)
- L G Chen
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo, China
| | - R Z Pei
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo, China
| | - Y Lu
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo, China
| | - P S Zhang
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo, China
| | - X H Liu
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo, China
| | - X H Du
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo, China
| | - D Chen
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo, China
| | - J J Cao
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo, China
| | - S Y Li
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo, China
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15
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Zhao SJ, Sun J, Gao CY, Ma PZ, Zhao F, Cao JJ. [Research progress on reversal agents for non-vitamin K antagonist oral anticoagulants]. Zhonghua Xin Xue Guan Bing Za Zhi 2019; 47:657-659. [PMID: 31434440 DOI: 10.3760/cma.j.issn.0253-3758.2019.08.013] [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)
- S J Zhao
- Department of Pharmacy, People's Hospital of Henan Province, Zhengzhou 450003, China
| | - J Sun
- Department of Pharmacy, People's Hospital of Henan Province, Zhengzhou 450003, China
| | - C Y Gao
- Department of cardiology, People's Hospital of Henan Province, Zhengzhou 450003, China
| | - P Z Ma
- Department of Pharmacy, People's Hospital of Henan Province, Zhengzhou 450003, China
| | - F Zhao
- Department of Pharmacy, People's Hospital of Henan Province, Zhengzhou 450003, China
| | - J J Cao
- Department of Pharmacy, People's Hospital of Henan Province, Zhengzhou 450003, China
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16
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Tang SH, Lu Y, Zhang PS, Liu XH, Du XH, Chen D, Li SY, Cao JJ, Chen LG, Le J, Qian SY, Hong YW, Pei RZ. [Ikaros family zinc finger 1 mutation is a poor prognostic factor for adult Philadelphia chromosome positive acute lymphoblastic leukemia]. Zhonghua Nei Ke Za Zhi 2019; 58:301-306. [PMID: 30917424 DOI: 10.3760/cma.j.issn.0578-1426.2019.04.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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 analyze the prognostic impact of Ikaros family zinc finger 1(IKZF1) mutation on adult Philadelphia chromosome (Ph1) positive acute lymphoblastic leukemia (ALL) patients. Methods: IKZF1 mutation was detected in 63 adult Ph1 positive ALL patients at diagnosis using capillary electrophoresis. Recruited patients were treated in our center and other three hospitals in Ningbo from January 2014 to January 2017. Clinical data were collected and retrospectively analyzed. Results: Thirty-nine (61.9%) patients were positive IKZF1 mutation in this cohort. The white blood cell (WBC) count in IKZF1 mutation group was significantly higher than that of mutation negative group [(64.6±11.3)×10(9)/L vs. (33.7±5.6)×10(9)/L, P<0.05]. Patients with WBC count over 30×10(9)/L accounted for 56.4% in IKZF1 mutation group. Complete remission (CR) rate in the IKZF1 mutation group was also lower than that of negative group after induction chemotherapy (64.1% vs. 75.0%, P>0.05). IKZF1 was a negative prognostic factor but not independent factor for survival by univariate and multivariate analyses. Patients were divided into chemotherapy and allogeneic transplantation groups. The 3-year overall survival (OS) rate and 3-year leukemia-free survival (LFS) rate in IKZF1 mutation group were significantly lower than those of negative group in both transplantation group (42.3% vs. 59.3%; 31.2% vs. 50.0%; respectively, both P<0.05) and chemotherapy group (24.8% vs. 40.0%; 19.0% vs. 34.3%; respectively, both P<0.05). Conclusion: IKZF1 mutation is a poor prognostic factor for adult Ph1 positive ALL patients.
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Affiliation(s)
- S H Tang
- Department of Hematology, Ningbo Yinzhou People's Hospital, Ningbo 315040, China
| | - Y Lu
- Department of Hematology, Ningbo Yinzhou People's Hospital, Ningbo 315040, China
| | - P S Zhang
- Department of Hematology, Ningbo Yinzhou People's Hospital, Ningbo 315040, China
| | - X H Liu
- Department of Hematology, Ningbo Yinzhou People's Hospital, Ningbo 315040, China
| | - X H Du
- Department of Hematology, Ningbo Yinzhou People's Hospital, Ningbo 315040, China
| | - D Chen
- Department of Hematology, Ningbo Yinzhou People's Hospital, Ningbo 315040, China
| | - S Y Li
- Department of Hematology, Ningbo Yinzhou People's Hospital, Ningbo 315040, China
| | - J J Cao
- Department of Hematology, Ningbo Yinzhou People's Hospital, Ningbo 315040, China
| | - L G Chen
- Department of Hematology, Ningbo Yinzhou People's Hospital, Ningbo 315040, China
| | - J Le
- Department of Hematology, Ningbo Medical Center Lihuili Eastern Hospital, Ningbo 315040, China
| | - S Y Qian
- Department of Hematology, Ningbo No.2 Hospital, Ningbo 315010, China
| | - Y W Hong
- Department of Hematology, Ningbo Yinzhou No.2 Hospital, Ningbo 315192, China
| | - R Z Pei
- Department of Hematology, Ningbo Yinzhou People's Hospital, Ningbo 315040, China
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Tang SH, Lu Y, Zhang PS, Liu XH, Du XH, Chen D, Sha KY, Li SY, Cao JJ, Chen LG, Zhuang XX, Pei RZ, Tang XW. [Effect of FLT3-ITD with DNMT3A R882 double-mutation on the prognosis of acute myeloid leukemia after allogeneic hematopoietic stem cell transplantation]. Zhonghua Xue Ye Xue Za Zhi 2019; 39:552-557. [PMID: 30122013 PMCID: PMC7342207 DOI: 10.3760/cma.j.issn.0253-2727.2018.07.005] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
目的 探讨FLT3-ITD和DNMT3A R882双突变对急性髓系白血病(AML)患者allo-HSCT预后的影响。 方法 使用直接测序法检测206例接受allo-HSCT的AML患者(M3和使用分子靶向药物索拉菲尼的病例除外)初诊时骨髓中常见的基因突变组套(包括FLT3-ITD、DNMT3A、c-kit、CEBPA、FLT3-TKD、NPM1),回顾性分析患者的临床资料,比较各基因突变组的移植预后。 结果 ①206例AML患者中男104例,女102例,中位年龄38(3~63)岁。FAB分型:M0 6例,M1 24例,M2 56例,M4 39例,M5 63例,M6 6例,不能分类12例。②全部206例患者根据初诊时的突变基因情况分为4组:FLT3-ITD+ DNMT3A R882+组(A组)19例,FLT3-ITD+ DNMT3A R882−组(B组)38例,FLT3-ITD−DNMT3A R882+组(C组)21例,FLT3-ITD−DNMT3A R882−组(D组)128例。四组间性别、年龄、初诊时白细胞计数、FAB分型、移植前疾病状态、染色体核型、供者类型、预处理方案及GVHD发生率比较,差异无统计学意义(P>0.05)。③A组和B、C、D组比较,2年累积复发率较高[分别为(72.2±2.6)%、(38.6±0.6)%、(36.8±1.6)%、(27.8±0.1)%,P值均<0.05],总生存率较低[分别为(30.9±13.3)%、(67.5±7.8)%、(61.4±12.4)%、(80.1±3.7)%,P值均<0.05],无白血病生存率较低[分别为(11.3±10.2)%、(47.9±8.4)%、(56.8±12.5)%、(79.7±3.6)%,P值均<0.05]。 结论 伴有FLT3-ITD与DNMT3A R882双突变的AML患者移植后累积复发率较高,总生存率和无白血病生存率较差。
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Affiliation(s)
- S H Tang
- Department of Hematology, Yinzhou People Hospital, Ningbo 315040, China
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Cao JJ, Han ZG, Zhang J. [Difference in lateral cephalogram of the male patients with Uygur and Han OSAHS]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 30:474-477. [PMID: 29871043 DOI: 10.13201/j.issn.1001-1781.2016.06.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Indexed: 06/08/2023]
Abstract
Objective:To investigate the difference of lateral cephalogram, PSG, BMI in Uygur and Han OSAHS male patients. Method:OSAHS male patients with 33 Uygur cases and 42 Han cases,30 normal Uygur cases and 36 normal Han cases were taken as control.Lateral cephalogram of upright position in waking state, then comparecraniofacial strcture parameters and PSG dates, etc. Result:Patients in OSAHS group and normal group had significant differences in the MP-H, PAS, PNS-P, BMI (P<0.05), the Uygur healthy men and Uygur male OSAHS patients had significant difference in the ANB° (P<0.05). The difference was statistically significant in PNS-P, MP-H and BMI in Uygur and Han OSAHS male patients (P<0.05). Conclusion:The differences in airway plane, hyoid position and length of soft palate and weight were significantly different between healthy men and OSAHS men. Han OSAHS male patients and Uygur male patients had significant differences in Hyoid position, length of the soft palate and weight. Lateral cephalogram can judge blocking site of upper airway and provide opration plan.
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Affiliation(s)
- J J Cao
- Department of Otolaryngology, Petrochemical Hospital of Urumqi, Urumqi, 830019, China
| | - Z G Han
- Department of Otolaryngology, People's Hospital of Xinjiang Autonomous Region
| | - J Zhang
- Department of Otolaryngology, People's Hospital of Xinjiang Autonomous Region
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Han YM, Wei C, Huang RJ, Bandowe BAM, Ho SSH, Cao JJ, Jin ZD, Xu BQ, Gao SP, Tie XX, An ZS, Wilcke W. Reconstruction of atmospheric soot history in inland regions from lake sediments over the past 150 years. Sci Rep 2016; 6:19151. [PMID: 26750586 PMCID: PMC4707497 DOI: 10.1038/srep19151] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [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: 09/30/2015] [Accepted: 12/07/2015] [Indexed: 11/12/2022] Open
Abstract
Historical reconstruction of atmospheric black carbon (BC, in the form of char and soot) is still constrained for inland areas. Here we determined and compared the past 150-yr records of BC and polycyclic aromatic compounds (PACs) in sediments from two representative lakes, Huguangyan (HGY) and Chaohu (CH), in eastern China. HGY only receives atmospheric deposition while CH is influenced by riverine input. BC, char, and soot have similar vertical concentration profiles as PACs in both lakes. Abrupt increases in concentrations and mass accumulation rates (MARs) of soot have mainly occurred since ~1950, the establishment of the People’s Republic of China, when energy usage changed to more fossil fuel contributions reflected by the variations in the concentration ratios of char/soot and individual PACs. In HGY, soot MARs increased by ~7.7 times in the period 1980–2012 relative to the period 1850–1950. Similar increases (~6.7 times) were observed in CH. The increase in soot MARs is also in line with the emission inventory records in the literature and the fact that the submicrometer-sized soot particles can be dispersed regionally. The study provides an alternative method to reconstruct the atmospheric soot history in populated inland areas.
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Affiliation(s)
- Y M Han
- KLACP and SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China.,Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China.,Joint Center for Global Change Studies, Beijing 100875, China
| | - C Wei
- KLACP and SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China.,SCDRC, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - R-J Huang
- KLACP and SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China.,Laboratory of Atmospheric Chemistry, Paul Scherrer Institute (PSI), 5232 Villigen, Switzerland
| | - B A M Bandowe
- Institute of Geography, University of Bern, Hallerstrasse 12, 3012 Bern, Switzerland.,Oeschger Centre for Climate Change Research, University of Bern, Falkenplatz 16, 3012 Bern, Switzerland
| | - S S H Ho
- KLACP and SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China.,Desert Research Institute, 2215 Raggio Parkway, Reno, NV 89512, USA
| | - J J Cao
- KLACP and SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
| | - Z D Jin
- KLACP and SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
| | - B Q Xu
- KLTECLSP, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
| | - S P Gao
- KLTECLSP, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
| | - X X Tie
- KLACP and SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
| | - Z S An
- KLACP and SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China.,Joint Center for Global Change Studies, Beijing 100875, China
| | - W Wilcke
- Institute of Geography and Geoecology, Karlsruhe Institute of Technology (KIT), Reinhard-Baumeister-Platz 1, 76131 Karlsruhe, Germany
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20
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Han YM, Wei C, Bandowe BAM, Wilcke W, Cao JJ, Xu BQ, Gao SP, Tie XX, Li GH, Jin ZD, An ZS. Elemental carbon and polycyclic aromatic compounds in a 150-year sediment core from Lake Qinghai, Tibetan Plateau, China: influence of regional and local sources and transport pathways. Environ Sci Technol 2015; 49:4176-4183. [PMID: 25732352 DOI: 10.1021/es504568m] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Elemental carbon (EC) and polycyclic aromatic compounds (PACs) are potential proxies for the reconstruction of change in human activities and the origin of air masses in historic times. In this study, the historic deposition of char and soot (the two subtypes of EC) and PACs in a 150-year sediment core from different topographic subbasins of Lake Qinghai on the Qinghai Tibetan Plateau (QTP) were reconstructed. The objective was to explore how the variations in the concentrations of EC and PACs, in the ratios of char to soot and of oxygenated polycyclic aromatic hydrocarbons (OPAHs) to parent PAHs, and in the composition of the PAC mixtures reflect historical changes in climate and human activity and the origin of air masses arriving at the QTP. The deposition fluxes of soot in the different subbasins were similar, averaging 0.18 (range of 0.15-0.25) and 0.16 (0.13-0.23) g m(-2) year(-1), respectively, but they varied for char (averaging 0.11 and 0.22 g m(-2) year(-1), respectively), suggesting ubiquitous atmospheric deposition of soot and local river inputs of char. The different vertical distributions of the char/soot ratios in the different subbasins can be interpreted in terms of the different transport mechanisms of char and soot. An abrupt increase in soot concentrations since 1980 coincides with results from the QTP ice cores that were interpreted to be indicative of soot transport from South Asia. Similar concentration patterns of PAHs with soot and 9,10-anthraquinone/anthracene (9,10-AQ/ANT) ratios all >2.0 suggest regional PAC sources. Increasing PAH/soot ratios and decreasing 9,10-AQ/ANT ratios since the beginning of the 1970s indicate increasing local emissions. The historical trends of these diagnostic ratios indicate an increase in the fossil-fuel contribution since the beginning of the 1970s. The increase of perylene concentrations with increasing core depth and the ratio of perylene to its penta-aromatic isomers indicate that perylene originates mainly from in situ biogenic diagenesis. We demonstrate that the concentrations of EC, char, soot, and PACs in sediments can be used to reconstruct local, regional, and remote sources and transport pathways of pollutants to the QTP.
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Affiliation(s)
- Y M Han
- ¶Joint Center for Global Change Studies, Beijing 100875, China
- §Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York 10964, United States
| | | | - B A M Bandowe
- ∥Geographic Institute, University of Berne, Hallerstrasse 12, 3012 Berne, Switzerland
| | - W Wilcke
- ∥Geographic Institute, University of Berne, Hallerstrasse 12, 3012 Berne, Switzerland
- ⊥Institute of Geography and Geoecology, Karlsruhe Institute of Technology (KIT), Reinhard-Baumeister-Platz 1, 76131 Karlsruhe, Germany
| | | | - B Q Xu
- #Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, 100101 Beijing, China
| | - S P Gao
- #Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, 100101 Beijing, China
| | | | | | | | - Z S An
- ¶Joint Center for Global Change Studies, Beijing 100875, China
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21
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Ho KF, Ho SSH, Huang RJ, Dai WT, Cao JJ, Tian L, Deng WJ. Spatiotemporal distribution of carbonyl compounds in China. Environ Pollut 2015; 197:316-324. [PMID: 25433759 DOI: 10.1016/j.envpol.2014.11.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 11/11/2014] [Accepted: 11/14/2014] [Indexed: 06/04/2023]
Abstract
A sampling campaign was carried out at nine Chinese cities in 2010/2011. Fifteen monocarbonyls (C# = 1-9) were quantified. Temperature is the rate-determining factor of the summertime carbonyl levels. The carbonyl emissions in winter are mainly driven by the primary anthropogenic sources like automobile. A molar ratio of propionaldehyde to nonaldehyde is a barometer of the impact of atmospheric vegetation emission which suggesting that strong vegetation emissions exist in summer and high propionaldehyde abundance is caused by fossil fuel combustion in winter. Potential health risk assessment of formaldehyde and acetaldehyde was conducted and the highest cumulative risks were observed at Chengdu in summer and Wuhan in winter. Because of the strong photochemical reaction and large amount of anthropogenic emissions, high concentrations of carbonyl compounds were observed in Chengdu. The use of ethanol-blended gasoline in Wuhan is the key reason of acetaldehyde emission and action should be taken to avoid potential health risks.
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Affiliation(s)
- K F Ho
- Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Shatin, Hong Kong, China; Shenzhen Municipal Key Laboratory for Health Risk Analysis, Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China; SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China.
| | - Steven Sai Hang Ho
- SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China; Division of Atmospheric Sciences, Desert Research Institute, Reno, NV 89512, United States
| | - R-J Huang
- Laboratory of Atmospheric Chemistry, Paul Scherrer Institute (PSI), Villigen 5232, Switzerland; Centre for Climate and Air Pollution Studies, Ryan Institute, National University of Ireland Galway, University Road, Galway, Ireland
| | - W T Dai
- SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China
| | - J J Cao
- SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China
| | - Linwei Tian
- Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Shatin, Hong Kong, China; Shenzhen Municipal Key Laboratory for Health Risk Analysis, Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
| | - W J Deng
- Department of Science and Environmental Studies, The Hong Kong Institute of Education, Tai Po, Hong Kong, China
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22
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Han YM, Bandowe BAM, Wei C, Cao JJ, Wilcke W, Wang GH, Ni HY, Jin ZD, An ZS, Yan BZ. Stronger association of polycyclic aromatic hydrocarbons with soot than with char in soils and sediments. Chemosphere 2015; 119:1335-1345. [PMID: 24656973 PMCID: PMC4756480 DOI: 10.1016/j.chemosphere.2014.02.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [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: 07/09/2013] [Revised: 01/24/2014] [Accepted: 02/04/2014] [Indexed: 05/19/2023]
Abstract
The knowledge of the association of polycyclic aromatic hydrocarbons (PAHs) with organic matter and carbonaceous materials is critical for a better understanding of their environmental transport, fate, and toxicological effects. Extensive studies have been done with regard to the relationship of PAHs with total organic carbon (TOC) and elemental carbon (EC) in different environmental matrices. The relationship between PAHs and the two subtypes of EC, char (combustion residues) and soot (produced via gas-to-particle conversion) also has been tested in field and laboratory experiments using reference materials. However, a direct comparison of associations of PAHs between with char and with soot in real environmental matrices has to our knowledge not yet been reported because of a lack of methodology to differentiate them. In this study, char and soot were measured using the IMPROVE method to test their associations with 12 EPA priority PAHs measured in topsoil samples (N=22, top 10 cm) collected from the Guanzhong Plain and in surface sediment samples (N=32, top 5 cm) from the Wei River (central China). In both soils and sediments, ∑12PAHs were more strongly associated with soot than with char, mainly due to the fact that soot and PAHs were produced in the same gas phase during combustion, had a strong affinity for each other, and were transported and deposited together, while char, the combustion residue, was transported differently to PAHs due to its large particle size. Stronger correlations between PAHs and the different carbon fractions (TOC, soot, and char) in sediments than in soils were observed, which is associated with the redistribution of PAHs among the organic matter pools in water because of the processes during soil erosion and sedimentation in the river.
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Affiliation(s)
- Y M Han
- Key Lab of Aerosol Science & Technology, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China.
| | - B A M Bandowe
- Geographic Institute, University of Berne, Hallerstrasse 12, 3012 Berne, Switzerland
| | - C Wei
- Key Lab of Aerosol Science & Technology, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China; Geographic Institute, University of Berne, Hallerstrasse 12, 3012 Berne, Switzerland; University of Chinese Academy of Sciences, Beijing 100049, China
| | - J J Cao
- Key Lab of Aerosol Science & Technology, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China
| | - W Wilcke
- Geographic Institute, University of Berne, Hallerstrasse 12, 3012 Berne, Switzerland
| | - G H Wang
- Key Lab of Aerosol Science & Technology, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China
| | - H Y Ni
- Key Lab of Aerosol Science & Technology, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China
| | - Z D Jin
- Key Lab of Aerosol Science & Technology, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China
| | - Z S An
- Key Lab of Aerosol Science & Technology, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China
| | - B Z Yan
- Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY 10964, USA
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23
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Leung PY, Wan HT, Billah MB, Cao JJ, Ho KF, Wong CKC. Corrigendum to "Chemical and biological characterization of air particulate matter 2.5, collected from five cities in China" [Environ. Pollut. 194 (November 2014), 188-195]. Environ Pollut 2014; 195:232. [PMID: 28117072 DOI: 10.1016/j.envpol.2014.09.008] [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: 06/06/2023]
Affiliation(s)
- P Y Leung
- Croucher Institute for Environmental Sciences, Partner State Key Laboratory of Environmental and Biological Analysis, Department of Biology, 200 Waterloo Road, Kowloon Tong, Hong Kong Baptist University, Hong Kong, China
| | - H T Wan
- Croucher Institute for Environmental Sciences, Partner State Key Laboratory of Environmental and Biological Analysis, Department of Biology, 200 Waterloo Road, Kowloon Tong, Hong Kong Baptist University, Hong Kong, China
| | - M B Billah
- Croucher Institute for Environmental Sciences, Partner State Key Laboratory of Environmental and Biological Analysis, Department of Biology, 200 Waterloo Road, Kowloon Tong, Hong Kong Baptist University, Hong Kong, China
| | - J J Cao
- Key Lab of Aerosol Science & Technology, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China
| | - K F Ho
- Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Tai Po Road, Shatin, Hong Kong, China
| | - Chris K C Wong
- Croucher Institute for Environmental Sciences, Partner State Key Laboratory of Environmental and Biological Analysis, Department of Biology, 200 Waterloo Road, Kowloon Tong, Hong Kong Baptist University, Hong Kong, China.
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Leung PY, Wan HT, Billah MB, Cao JJ, Ho KF, Wong CKC. Chemical and biological characterization of air particulate matter 2.5, collected from five cities in China. Environ Pollut 2014; 194:188-195. [PMID: 25150452 DOI: 10.1016/j.envpol.2014.07.032] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Revised: 07/25/2014] [Accepted: 07/29/2014] [Indexed: 06/03/2023]
Abstract
Fifteen polycyclic aromatic hydrocarbons (PAHs) in PM2.5 samples collected in five different cities (Hong Kong (HK), Guangzhou (GZ), Xiamen (XM), Xi'an (XA) and Beijing (BJ)) in China in the winter 2012-13 [corrected] were analyzed by gas chromatography-mass spectrometry. The biological effects of organic extracts were assayed using the human bronchial epithelial cells BEAS-2B. All sixteen priority PAHs can be found in the PM2.5 samples of XA and BJ, but not in HK, GZ and XM, demonstrating the differential spatial source and distribution of PAHs. Our results showed that the total PAHs ranged from 3.35 to 80.45 ng/m(3) air, leading by BJ, followed by XA, XM, GZ and HK. In the cell culture study, transcript levels of pro-inflammatory cytokine interleukin-6 (IL-6), CYP1A1 and CYP1B1 were found to be induced in the treatment. The cells exposed to extracts from XA and BJ demonstrated significant migratory activities, indicating a sign of increase of tumorigenicity.
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Affiliation(s)
- P Y Leung
- Croucher Institute for Environmental Sciences, Partner State Key Laboratory of Environmental and Biological Analysis, Department of Biology, 200 Waterloo Road, Kowloon Tong, Hong Kong Baptist University, Hong Kong, China.
| | - H T Wan
- Croucher Institute for Environmental Sciences, Partner State Key Laboratory of Environmental and Biological Analysis, Department of Biology, 200 Waterloo Road, Kowloon Tong, Hong Kong Baptist University, Hong Kong, China.
| | - M B Billah
- Croucher Institute for Environmental Sciences, Partner State Key Laboratory of Environmental and Biological Analysis, Department of Biology, 200 Waterloo Road, Kowloon Tong, Hong Kong Baptist University, Hong Kong, China.
| | - J J Cao
- Key Lab of Aerosol Science & Technology, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China.
| | - K F Ho
- Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Tai Po Road, Shatin, Hong Kong, China.
| | - Chris K C Wong
- Croucher Institute for Environmental Sciences, Partner State Key Laboratory of Environmental and Biological Analysis, Department of Biology, 200 Waterloo Road, Kowloon Tong, Hong Kong Baptist University, Hong Kong, China.
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Lu WF, Cao JJ, Guo YJ, Zhong K, Zha GM, Wang LF, Yang GY. Expression of the porcine lipoic acid synthase (LIAS) gene in Escherichia coli. Genet Mol Res 2014; 13:5369-77. [PMID: 25078593 DOI: 10.4238/2014.july.24.16] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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
Lipoic acid synthase, which exists primarily in mitochondria, participates in the biosynthesis of intrinsic lipoic acid. The lipoic acid synthase gene in pig is known as LIAS. To further investigate the biological functions of the protein that is encoded by LIAS, we cloned the open read frame of porcine LIAS (GenBank No. JN797612.1) into the expression vector pET-28α(+). The resulting pET-28α(+)-Lias recombinant vector was introduced into the Escherichia coli BL21 (DE3) strain. With induction by isopropyl β-D-1-thiogalactopyranoside, the recombinant E. coli strain can express the target protein that has a molecular weight of 41.58 kDa, which was confirmed by Western blotting.
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Affiliation(s)
- W F Lu
- Key Laboratory of Animal Biochemistry and Nutrition, Ministry of Agriculture, Henan Agricultural University, Zhengzhou, Henan, China
| | - J J Cao
- Key Laboratory of Animal Biochemistry and Nutrition, Ministry of Agriculture, Henan Agricultural University, Zhengzhou, Henan, China
| | - Y J Guo
- Key Laboratory of Animal Biochemistry and Nutrition, Ministry of Agriculture, Henan Agricultural University, Zhengzhou, Henan, China
| | - K Zhong
- Key Laboratory of Animal Biochemistry and Nutrition, Ministry of Agriculture, Henan Agricultural University, Zhengzhou, Henan, China
| | - G M Zha
- Key Laboratory of Animal Biochemistry and Nutrition, Ministry of Agriculture, Henan Agricultural University, Zhengzhou, Henan, China
| | - L F Wang
- Key Laboratory of Animal Biochemistry and Nutrition, Ministry of Agriculture, Henan Agricultural University, Zhengzhou, Henan, China
| | - G Y Yang
- Key Laboratory of Animal Biochemistry and Nutrition, Ministry of Agriculture, Henan Agricultural University, Zhengzhou, Henan, China
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Ho KF, Ho SSH, Dai WT, Cao JJ, Huang RJ, Tian L, Deng WJ. Seasonal variations of monocarbonyl and dicarbonyl in urban and sub-urban sites of Xi'an, China. Environ Monit Assess 2014; 186:2835-49. [PMID: 24420739 DOI: 10.1007/s10661-013-3584-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Accepted: 12/12/2013] [Indexed: 05/22/2023]
Abstract
Seventeen airborne carbonyls including monocarbonyls and dicarbonyls were determined in urban and sub-urban sites of Xi'an, China in three seasons in 2010. In winter, acetone was the most abundant carbonyl in the urban site due to usage of organic solvents in constructions and laboratories and its slower atmospheric removal mechanisms by photolysis and reaction with hydroxyl radical than those of formaldehyde and acetaldehyde. In the sub-urban site, acetaldehyde was the most abundant carbonyl, followed by formaldehyde and acetone. During summer, however, formaldehyde was the most dominant carbonyl in both sites. The photooxidations of a wide range of volatile organic compounds (VOCs) yielded much more formaldehyde than other carbonyls under high solar radiation and temperature. In the urban site, the average concentrations of dicarbonyls (i.e., glyoxal and methyglyoxal) in spring and summer were higher than that in winter. Transformation of aromatic VOCs emitted from fuel evaporation leads to the formation of 1,2-dicarbonyls. A reverse trend was observed in sub-urban sites, as explained by the relatively low abundances and accumulations of VOC precursors in the rural atmosphere during warm seasons. Moreover, cumulative cancer risk based on measured outdoor carbonyls (formaldehyde and acetaldehyde) in Xi'an Jiaotong University and Heihe was estimated (8.82 × 10(-5) and 4.96 × 10(-5), respectively). This study provides a clear map on the abundances of carbonyls and their source interpretation in the largest and the most economic city in Northwestern China.
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Affiliation(s)
- K F Ho
- School of Public Health and Primary Care, The Chinese University of Hong Kong, Shatin, Hong Kong, China,
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27
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Zhou YC, Chen S, Cao JJ, Chen SY, Xie YF, Niu QX. Adenovirus-mediated viral interleukin-10 gene transfer prevents concanavalin A-induced liver injury. Dig Liver Dis 2012; 44:398-405. [PMID: 22209949 DOI: 10.1016/j.dld.2011.11.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2011] [Revised: 11/14/2011] [Accepted: 11/25/2011] [Indexed: 02/05/2023]
Abstract
BACKGROUND AND AIM Liver injury is closely associated with immune inflammation. Lacking immunostimulatory functions, viral interleukin-10 (vIL-10), a cellular IL-10 homologue, has been an attractive molecule for immunomodulatory therapy. We aimed to reveal a protective effect of the gene transfer of an adenoviral vector encoding vIL-10 on liver injury induced by concanavalin A. METHODS C57BL/6J mice were intravenously injected with adenoviral vector encoding vIL-10 before concanavalin A challenge. Liver injury was assessed. Interferon-γ and interleukin-4 levels were measured by ELISA. The activation of splenic and hepatic immune cells was analysed using an MTT assay. RESULTS Adenoviral vector encoding vIL-10 pretreatment significantly decreased concanavalin A-mediated elevations in serum alanine aminotransaminase and aspartate aminotransaminase activity, and necrotic area in liver tissues. The protective effect of adenoviral vector encoding vIL-10 was attributed to its inhibition of T cell activation, and production of interferon-γ and interleukin-4 by the immune cells. Recombinant mouse IL-10, a high homologous cytokine to vIL-10, effectively downregulated interferon-γ and interleukin-4 release by hepatic mononuclear cells. CONCLUSION Adenovirus vector-mediated vIL-10 gene transfer can prevent concanavalin A-induced hepatic injury, minimise pro-inflammatory cytokine release, and inhibit the activation of T lymphocytes.
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Affiliation(s)
- Yan-Chun Zhou
- Institute of Inflammation and Immune Diseases, Shantou University Medical College, Shantou, Guangdong, China
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Cao JJ, Wang Y, McLaughlin J, Haag E, Passick M, Toole R, Cheng JY, Lachman J, Reichek N. Assessment of left ventricular filling pressure using mean left atrial transit time from contrast enhanced dynamic MRI. J Cardiovasc Magn Reson 2011. [PMCID: PMC3106693 DOI: 10.1186/1532-429x-13-s1-p20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Abstract
Recently, an interaction between neurodegenerative processes and the innate and adaptive immune responses has been increasingly recognized. Activation of microglia, infiltration of peripheral T lymphocytes, and T-cell interaction with microglia may strongly affect the progression of Parkinson's disease (PD) both in patients and in animal models of the disease. Here, we summarize the current knowledge regarding the role of microglia in the progression of PD. The plasticity of the microglial response is also discussed in the context of PD. In addition, we also focus on the influence of several peripheral T-cell subsets on PD progression as well as on possible pathways by which they might act. This review should help increase our understanding of the effects of innate and adaptive immune cells in the pathogenesis of PD.
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Affiliation(s)
- Jun-Jun Cao
- Animal Core, Shantou University Medical College, Shantou 515041, China
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30
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Han YM, Cao JJ, Yan BZ, Kenna TC, Jin ZD, Cheng Y, Chow JC, An ZS. Comparison of elemental carbon in lake sediments measured by three different methods and 150-year pollution history in Eastern China. Environ Sci Technol 2011; 45:5287-5293. [PMID: 21591674 DOI: 10.1021/es103518c] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Concentrations of elemental carbon (EC) were measured in a 150 yr sediment record collected from Lake Chaohu in Anhui Province, eastern China, using three different thermal analytical methods: IMPROVE_A thermal optical reflectance (TOR), STN_thermal optical transmittance (TOT), and chemothermal oxidation (CTO). Distribution patterns for EC concentrations are different among the three methods, most likely due to the operational definition of EC and different temperature treatments prescribed for each method. However, similar profiles were found for high-temperature EC fractions among different methods. Historical soot(TOR) (high-temperature EC fractions measured by the IMPROVE_A TOR method) from Lake Chaohu exhibited stable low concentrations prior to the late 1970s and a sharp increase thereafter, corresponding well with the rapid industrialization of China in the last three decades. This may suggest that high-temperature thermal protocols are suitable for differentiating between soot and other carbon fractions. A similar soot(TOR) record was also obtained from Lake Taihu (~200 km away), suggesting a regional source of soot. The ratio of char(TOR) (low-temperature EC fraction measured by the IMPROVE_A TOR method, after correction for pyrolysis) to soot(TOR) in Lake Chaohu shows an overall decreasing trend, consistent with gradual changes in fuel use from wood burning to increasing fossil fuel combustions. Average higher char(TOR)/soot(TOR) was observed in Lake Taihu than in Lake Chaohu in the past 150 years, consistent with the longer and more extensive industrialization around the Taihu region.
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Affiliation(s)
- Y M Han
- SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China
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Shen CL, Yeh JK, Samathanam C, Cao JJ, Stoecker BJ, Dagda RY, Chyu MC, Dunn DM, Wang JS. Green tea polyphenols attenuate deterioration of bone microarchitecture in female rats with systemic chronic inflammation. Osteoporos Int 2011; 22:327-37. [PMID: 20306019 DOI: 10.1007/s00198-010-1209-2] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2009] [Accepted: 02/03/2010] [Indexed: 01/31/2023]
Abstract
UNLABELLED Green tea polyphenols (GTP) are promising agents for preventing bone loss. GTP supplementation sustained microarchitecture and improved bone quality via a decrease in inflammation. Findings suggest a significant role for GTP in skeletal health of patients with chronic inflammation. INTRODUCTION This study evaluated whether GTP can restore bone microstructure along with a molecular mechanism in rats with chronic inflammation. A 2 [placebo vs. lipopolysaccharide (LPS)]× 2 [no GTP vs. 0.5% GTP (w/v) in drinking water] factorial design was employed. METHODS Female rats were assigned to four groups: placebo, LPS, placebo + GTP, and LPS + GTP for 12 weeks. Efficacy was evaluated by examining changes in bone microarchitecture using histomorphometric and microcomputed tomographic analyses and by bone strength using the three-point bending test. A possible mechanism was studied by assessing the difference in tumor necrosis factor-α (TNF-α) expression in tibia using immunohistochemistry. RESULTS LPS lowered trabecular volume fraction, thickness, and bone formation in proximal tibia while increasing osteoclast number and surface perimeter in proximal tibia and eroded surface in endocortical tibial shafts. GTP increased trabecular volume fraction and number in both femur and tibia and periosteal bone formation rate in tibial shafts while decreasing trabecular separation in proximal tibia and eroded surface in endocortical tibial shafts. There was an interaction between LPS and GTP in trabecular number, separation, bone formation, and osteoclast number in proximal tibia, and trabecular thickness and number in femur. GTP improved the strength of femur, while suppressing TNF-α expression in tibia. CONCLUSION In conclusion, GTP supplementation mitigated deterioration of bone microarchitecture and improved bone integrity in rats with chronic inflammation by suppressing bone erosion and modulating cancellous and endocortical bone compartments, resulting in a larger net bone volume. Such a protective role of GTP may be due to a suppression of TNF-α.
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Affiliation(s)
- C-L Shen
- Department of Pathology, Texas Tech University Health Sciences Center, BB 198, 3601 4th Street, Lubbock, TX 79430-9097, USA.
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Shen CL, Yeh JK, Cao JJ, Tatum OL, Dagda RY, Wang JS. Synergistic effects of green tea polyphenols and alphacalcidol on chronic inflammation-induced bone loss in female rats. Osteoporos Int 2010; 21:1841-52. [PMID: 20069278 PMCID: PMC2919589 DOI: 10.1007/s00198-009-1122-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [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: 09/03/2009] [Accepted: 10/14/2009] [Indexed: 12/19/2022]
Abstract
UNLABELLED Studies suggest that green tea polyphenols (GTP) or alphacalcidol is promising agent for preventing bone loss. Findings that GTP supplementation plus alphacalcidol administration increased bone mass via a decrease of oxidative stress and inflammation suggest a significant role of GTP plus alphacalcidol in bone health of patients with chronic inflammation. INTRODUCTION Studies have suggested that green tea polyphenols (GTP) or alphacalcidol are promising dietary supplements for preventing bone loss in women. However, the mechanism(s) related to the possible osteo-protective role of GTP plus D(3) in chronic inflammation-induced bone loss is not well understood. METHODS This study evaluated bioavailability, efficacy, and related mechanisms of GTP in combination with alphacalcidol in conserving bone loss in rats with chronic inflammation. A 12-week study of 2 (no GTP vs. 0.5% GTP in drinking water) × 2 (no alphacalcidol vs. 0.05 μg/kg alphacalcidol, 5×/week) factorial design in lipopolysaccharide-administered female rats was performed. In addition, a group receiving placebo administration was used to compare with a group receiving lipopolysaccharide administration only to evaluate the effect of lipopolysaccharide. RESULTS Lipopolysaccharide administration resulted in lower values for bone mass, but higher values for serum tartrate-resistant acid phosphatase (TRAP), urinary 8-hydroxy-2'-deoxyguanosine, and mRNA expression of tumor necrosis factor-α and cyclooxygenase-2 in spleen. GTP supplementation increased urinary epigallocatechin and epicatechin concentrations. Both GTP supplementation and alphacalcidol administration resulted in a significant increase in bone mass, but a significant decrease in serum TRAP levels, urinary 8-hydroxydeoxyguanosine levels, and mRNA expression of tumor necrosis factor-α and cyclooxygenase-2 in spleen. A synergistic effect of GTP and alphacalcidol was observed in these parameters. Neither GTP nor alphacalcidol affected femoral bone area or serum osteocalcin. CONCLUSION We conclude that a bone-protective role of GTP plus alphacalcidol during chronic inflammation bone loss may be due to a reduction of oxidative stress damage and inflammation.
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Affiliation(s)
- C-L Shen
- Department of Pathology, Texas Tech University Health Sciences Center, BB 198, 3601 4th street, Lubbock, TX 79430-9097, USA.
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Cheng Y, Lee SC, Ho KF, Chow JC, Watson JG, Louie PKK, Cao JJ, Hai X. Chemically-speciated on-road PM(2.5) motor vehicle emission factors in Hong Kong. Sci Total Environ 2010; 408:1621-7. [PMID: 20036415 DOI: 10.1016/j.scitotenv.2009.11.061] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2009] [Revised: 11/26/2009] [Accepted: 11/30/2009] [Indexed: 05/05/2023]
Abstract
PM(2.5) (particle with an aerodynamic diameter less than 2.5microm) was measured in different microenvironments of Hong Kong (including one urban tunnel, one Hong Kong/Mainland boundary roadside site, two urban roadside sites, and one urban ambient site) in 2003. The concentrations of organic carbon (OC), elemental carbon (EC), water-soluble ions, and up to 40 elements (Na to U) were determined. The average PM(2.5) mass concentrations were 229+/-90, 129+/-95, 69+/-12, 49+/-18microg m(-3) in the urban tunnel, cross boundary roadside, urban roadside, and urban ambient environments, respectively. Carbonaceous particles (sum of organic material [OM] and EC) were the dominant constituents, on average, accounting for approximately 82% of PM(2.5) emissions in the tunnel, approximately 70% at the three roadside sites, and approximately 48% at the ambient site, respectively. The OC/EC ratios were 0.6+/-0.2 and 0.8+/-0.1 at the tunnel and roadside sites, respectively, suggesting carbonaceous aerosols were mainly from vehicle exhausts. Higher OC/EC ratio (1.9+/-0.7) occurred at the ambient site, indicating contributions from secondary organic aerosols. The PM(2.5) emission factor for on-road diesel-fueled vehicles in the urban area of Hong Kong was 257+/-31mg veh(-1) km(-1), with a composition of approximately 51% EC, approximately 26% OC, and approximately 9% SO(4)(=). The other inorganic ions and elements made up approximately 11% of the total PM(2.5) emissions. OC composed the largest fraction (approximately 51%) in gasoline and liquid petroleum gas (LPG) emissions, followed by EC (approximately 19%). Diesel engines showed higher emission rates than did gasoline and LPG engines for most pollutants, except for V, Br, Sb, and Ba.
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Affiliation(s)
- Y Cheng
- Department of Environmental Science and Technology, School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Shaanxi, China.
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Han YM, Cao JJ, Posmentier ES, Chow JC, Watson JG, Fung KK, Jin ZD, Liu SX, An ZS. The effect of acidification on the determination of elemental carbon, char-, and soot-elemental carbon in soils and sediments. Chemosphere 2009; 75:92-99. [PMID: 19108866 DOI: 10.1016/j.chemosphere.2008.11.044] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2008] [Revised: 11/10/2008] [Accepted: 11/16/2008] [Indexed: 05/27/2023]
Abstract
We studied the influence of acid pretreatment on the effective distinction between elemental carbon (EC) and organic carbon (OC), and between char-EC and soot-EC. Though widely employed in the pretreatment of soils and sediments for EC quantification, the use of HCl, HF, and HNO(3) could decrease soot thermal stability as acid remains, leading to an underestimation of soot-EC by thermal methods. We compared thermal optical reflectance (TOR) measurements of EC concentrations in char reference materials and in lacustrine and marine sediments following pretreatment with various acids. The results showed that pretreatment with 2M HCl, concentrated HNO(3), 7 M HNO(3), and 1 M HNO(3) did not result in EC oxidation. However, hot concentrated HNO(3) oxidized EC significantly, leading to lower concentrations of EC, char-EC and soot-EC. By comparing the removal of potentially interfering materials, which contain little fire-derived carbon, with different acid pretreatments, we recommend the HCl-HF-HCl and concentrated (not hot) HNO(3)-HF-HCl pretreatments for the determination of EC, char-EC, and soot-EC in soils and sediments using the TOR method.
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Affiliation(s)
- Y M Han
- SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China.
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Yang J, Li GD, Cao JJ, Yue Q, Li GH, Chen JS. Structural Variation from 1D to 3D: Effects of Ligands and Solvents on the Construction of Lead(II)–Organic Coordination Polymers. Chemistry 2007; 13:3248-61. [PMID: 17212363 DOI: 10.1002/chem.200600730] [Citation(s) in RCA: 238] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A series of Pb(II) coordination polymers [Pb(ndc)(dpp)] (1), [Pb(ndc)(ptcp)].0.5 H2O (2), [Pb(ndc)(dppz)] (3), [Pb(ndc)(tcpn)(2)] (4), [Pb2(ndc)2(tcpp)] (5), [Pb(Hndc)2].H2O (6), [Pb(ndc)(dma)] (7), [Pb(bdc)(dma)] (8), [Pb(trans-chdc)(H2O)] (9), and [Pb2(cis-chdc)2].NH(CH3)2 (10), where ndc=1,4-naphthalenedicarboxylate, dpp=4,7-diphenyl-1,10-phenanthroline, ptcp=2-phenyl-1H-1,3,7,8-tetraazacyclopenta[l]phenanthrene, dppz=dipyrido[3,2-a:2',3'-c]phenazine, tcpn=2-(1H-1,3,7,8-tetraazacyclopenta[l]phenanthren-2-yl)naphthol, tcpp=4-(1H-1,3,7,8-tetraazacyclopenta[l]phenanthren-2-yl)phenol, dma=N,N-dimethylacetamide, bdc=1,4-benzenedicarboxylate, and chdc=1,4-cyclohexanedicarboxylate, have been synthesized from a hydrothermal or solvothermal reaction system by varying the ligands or the solvents. Compounds 1-5 crystallize with an N-donor chelating ligand and an aromatic dicarboxylate linker. Compounds 1-4 are 1D polymers with different pi-pi stacking interactions, whereas compound 5 consists of 2D layers. The structures of compounds 7, 8, and 10 are 3D frameworks formed by connection of the Pb(II) centers by organic acid ligands. Compound 7 is chiral although the ndc ligand is achiral, while the framework of 8 is a typical 3D (3,4)-connected net. Compound 10 is the first example of Pb(II) wheel cluster [Pb(8)O(8)] units bridged by carboxylate groups. Compound 6 contains 1D chains which are further extended to a 3D structure by pi-pi interactions. Compound 9 consists of a 2D network constructed by Pb(II) centers and trans-chdc ligands. The structural differences between 7 and 8 and between 9 and 10 indicate the importance of solvents for framework formation of the coordination polymers. By varying the solvent the cis and trans conformations of H(2)chdc in 9 and 10 were separated completely. The photoluminescence and nonlinear optical properties of the coordination polymers have also been investigated.
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Affiliation(s)
- Jin Yang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China
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Ho KF, Cao JJ, Lee SC, Chan CK. Source apportionment of PM2.5 in urban area of Hong Kong. J Hazard Mater 2006; 138:73-85. [PMID: 16843593 DOI: 10.1016/j.jhazmat.2006.05.047] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2006] [Revised: 05/15/2006] [Accepted: 05/15/2006] [Indexed: 05/10/2023]
Abstract
A monitoring program for PM(2.5) had been performed at two urban monitoring stations in Hong Kong from November 2000 to February 2001 and June 2001 to August 2001. PM(2.5) samples were collected once every 6 days at PolyU and KT stations with the sampling duration of 24-h. A sum of 25 chemical species in PM(2.5) were determined and selected for receptor models. Enrichment factors relative to earth crust abundances were evaluated and it was noted that most crustal elements including Al, Ti, Mg, Ca and K have small enrichment factors. Correlation and multivariate analysis technique, such as principal components analysis (PCA)/absolute principal components analysis (APCA) and cluster analysis (CA) are used for source apportionment to identify the possible sources of PM(2.5) and to determine their contribution. Six factors at each site were isolated by using PCA/APCA and cluster analysis. Similar sources (crustal matter, automobile emission, diesel emission, secondary aerosols, tire wear, and non-ferrous smelter) are identified by the PCA/APCA and cluster analysis.
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Affiliation(s)
- K F Ho
- Department of Civil & Structural Engineering The Hong Kong Polytechnic University, Hong Kong, China.
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Shen ZX, Cao JJ, Zhang XY, Arimoto R, Ji JF, Balsam WL, Wang YQ, Zhang RJ, Li XX. Spectroscopic analysis of iron-oxide minerals in aerosol particles from northern China. Sci Total Environ 2006; 367:899-907. [PMID: 16487575 DOI: 10.1016/j.scitotenv.2006.01.003] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2005] [Revised: 12/22/2005] [Accepted: 01/04/2006] [Indexed: 05/06/2023]
Abstract
Diffuse reflectance spectrometry was used to study iron-oxide minerals and to investigate the reflectance characteristics of eolian dust collected during the spring of 2001 and 2002 on bulk filters from three sites in northern China. The first derivatives of the reflectance spectra were consistent with signals from two iron-oxide minerals, hematite and goethite, at wavelengths of 565 and 435 nm, respectively, and these values varied with the iron concentrations in the samples. The percent reflectances for the yellow, orange and red bands increased with the iron concentrations and with the first derivative values representing hematite and goethite while those for violet, blue and green bands decreased correspondingly. The results show that iron-oxide minerals play an important role in determining the aerosol particles' color and reflectance properties. Moreover, the relative amounts of the two iron-oxides in Asian dust apparently differ from those in African dust, suggesting that the iron-oxides may provide another tool for tracing the origins of eolian dust on a global scale.
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Affiliation(s)
- Z X Shen
- Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'An 710049, China.
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Yang J, Yue Q, Li GD, Cao JJ, Li GH, Chen JS. Structures, Photoluminescence, Up-Conversion, and Magnetism of 2D and 3D Rare-Earth Coordination Polymers with Multicarboxylate Linkages. Inorg Chem 2006; 45:2857-65. [PMID: 16562941 DOI: 10.1021/ic051557o] [Citation(s) in RCA: 384] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Four new rare-earth compounds, [Eu(NDC)1.5(DMF)2] (1), [Nd2(NDC)3(DMF)4].H2O (2), [La2(NDC)3(DMF)4].0.5H2O (3), and [Eu(BTC)(H2O)] (4), where NDC = 1,4-naphthalenedicarboxylate, BTC = 1,3,5-benzenetricarboxylate, and DMF = N,N-dimethylformamide, have been synthesized through preheating and cooling-down crystallization. Compounds 1-3 possess similar 2D structures, in which the NDC ligands link M(III) (M = La, Nd, and Eu) ions of two adjacent double chains constructed by NDC ligands and dinuclear M(III) building units. In compound 4, the Eu(III) ion is seven-coordinated by O atoms from six BTC ligands and one terminal water molecule in a distorted pentagonal-bipyramidal coordination environment. If the BTC ligand and the Eu(III) ion are regarded as six-connected nodes, respectively, the structure of compound 4 can be well described as a 3D six-connected net. Furthermore, compounds 1 and 4 exhibit strong red luminescence upon 355-nm excitation. Compound 2 displays interesting emissions in the near-IR region, and yellow (580 nm) pumping of this compound results in UV and intense blue emissions through an up-conversion process. The magnetic properties of compounds 1, 2, and 4 have been studied through measurement of their magnetic susceptibilities over the temperature range of 4-300 K.
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Affiliation(s)
- Jin Yang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, People's Republic of China
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Ho KF, Lee SC, Cao JJ, Chow JC, Watson JG, Chan CK. Seasonal variations and mass closure analysis of particulate matter in Hong Kong. Science of The Total Environment 2006; 355:276-87. [PMID: 15901488 DOI: 10.1016/j.scitotenv.2005.03.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2004] [Accepted: 03/01/2005] [Indexed: 05/02/2023]
Abstract
The chemical characteristics of ambient particulate matters in urban and rural areas of Hong Kong were determined in this study. A monitoring program starting from November 2000 to February 2001 (winter) and June 2001 to August 2001 (summer) for PM10 and PM2.5 was performed at three monitoring stations in Hong Kong. Twenty-four-hour PM10 and PM2.5 samples were collected once every 6 days at two urban sites, PolyU and KT, and every 12 days at a background site, HT, with Hi-Vol samplers. High concentrations of OC, EC (except in PolyU), water-soluble ions and elements were observed in winter among the three sampling sites for PM10 and PM2.5 fractions. Seasonal variations were significant in background HT. Dilution effect due to the increase in mixing depth and precipitation in summer reduced the concentrations of particulate matters. Long-range transport could contribute to the higher concentrations of particulate matter in the winter. Chemical mass closure calculations were performed for PM10 and PM2.5 observed. Mass closure improved when separate factors (1.4 and 1.9 respectively) were used to convert water-soluble organic carbon (WSOC) and water-insoluble organic carbon (WINSOC) into corresponding organic masses. The urban sites showed high percentages of water-soluble ions in winter and high percentages of carbonaceous species in summer. Better results were obtained for the chemical mass closure analysis in winter than in summer. High temperature and solar radiation in summer increased the rate of the complex photochemical reaction in the atmosphere. Therefore the chemical mass closure analysis would underestimate the volatized species and secondary aerosols during summer.
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Affiliation(s)
- K F Ho
- Research Center for Urban Environmental Technology and Management, Department of Civil and Structural Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
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Cao JJ, Lee SC, Chow JC, Cheng Y, Ho KF, Fung K, Liu SX, Watson JG. Indoor/outdoor relationships for PM2.5 and associated carbonaceous pollutants at residential homes in Hong Kong - case study. Indoor Air 2005; 15:197-204. [PMID: 15865619 DOI: 10.1111/j.1600-0668.2005.00336.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
UNLABELLED Six residences were selected (two roadside, two urban, and two rural) to evaluate the indoor-outdoor characteristics of PM(2.5) (aerodynamic diameter <2.5 microm) carbonaceous species in Hong Kong during March and April 2004. Twenty-minute-averaged indoor and outdoor PM(2.5) concentrations were recorded by DustTrak samplers simultaneously at each site for 3 days to examine diurnal variability of PM(2.5) mass concentrations and their indoor-to-outdoor (I/O) ratios. Daily (24-h average) indoor/outdoor PM(2.5) samples were collected on pre-fired quartz-fiber filters with battery-powered portable mini-volume samplers and analyzed for organic and elemental carbon (OC, EC) by thermal/optical reflectance (TOR) following the Interagency Monitoring of Protected Visual Environments (IMPROVE) protocol. The average indoor and outdoor concentrations of 24 h PM(2.5) were 56.7 and 43.8 microg/m(3), respectively. The short-term PM(2.5) profiles indicated that the penetration of outdoor particles was an important contributor to indoor PM(2.5), and a household survey indicated that daily activities were also sources of episodic peaks in indoor PM(2.5). The average indoor OC and EC concentrations of 17.1 and 2.8 microg/m(3), respectively, accounted for an average of 29.5 and 5.2%, respectively, of indoor PM(2.5) mass. The average indoor OC/EC ratios were 5.8, 9.1, and 5.0 in roadside, urban, and rural areas, respectively; while average outdoor OC/EC ratios were 4.0, 4.3, and 4.0, respectively. The average I/O ratios of 24 h PM(2.5), OC, and EC were 1.4, 1.8, and 1.2, respectively. High indoor-outdoor correlations (r(2)) were found for PM(2.5) EC (0.96) and mass (0.81), and low correlations were found for OC (0.55), indicative of different organic carbon sources indoors. A simple model implied that about two-thirds of carbonaceous particles in indoor air are originated from outdoor sources. PRACTICAL IMPLICATIONS Indoor particulate pollution has received more attentions in Asia. This study presents a case study regarding the fine particulate matter and its carbonaceous compositions at six residential homes in Hong Kong. The characteristics and relationship of atmospheric organic and elemental carbon were discussed indoors and outdoors. The distribution of eight carbon fractions was first reported in indoor samples to interpret potential sources of indoor carbonaceous particles. The data set can provide significant scientific basis for indoor air quality and epidemiology study in Hong Kong and China.
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Affiliation(s)
- J J Cao
- Research Center for Environmental Technology and Management, Department of Civil and Structural Engineering, The Hong Kong Polytechnic University, Hong Kong, China
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Jickells TD, An ZS, Andersen KK, Baker AR, Bergametti G, Brooks N, Cao JJ, Boyd PW, Duce RA, Hunter KA, Kawahata H, Kubilay N, laRoche J, Liss PS, Mahowald N, Prospero JM, Ridgwell AJ, Tegen I, Torres R. Global iron connections between desert dust, ocean biogeochemistry, and climate. Science 2005; 308:67-71. [PMID: 15802595 DOI: 10.1126/science.1105959] [Citation(s) in RCA: 532] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
The environmental conditions of Earth, including the climate, are determined by physical, chemical, biological, and human interactions that transform and transport materials and energy. This is the "Earth system": a highly complex entity characterized by multiple nonlinear responses and thresholds, with linkages between disparate components. One important part of this system is the iron cycle, in which iron-containing soil dust is transported from land through the atmosphere to the oceans, affecting ocean biogeochemistry and hence having feedback effects on climate and dust production. Here we review the key components of this cycle, identifying critical uncertainties and priorities for future research.
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Affiliation(s)
- T D Jickells
- School of Environmental Sciences, University of East Anglia, Norwich NR47TJ, UK
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Matsumoto RR, Hewett KL, Pouw B, Bowen WD, Husbands SM, Cao JJ, Newman AH. Rimcazole analogs attenuate the convulsive effects of cocaine: correlation with binding to sigma receptors rather than dopamine transporters. Neuropharmacology 2001; 41:878-86. [PMID: 11684152 DOI: 10.1016/s0028-3908(01)00116-2] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.9] [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: 10/27/2022]
Abstract
Cocaine interacts with dopamine transporters and sigma receptors at concentrations that are achievable in vivo, suggesting that they may both be viable targets for the development of anti-cocaine agents. Rimcazole binds to both of these targets and also attenuates cocaine-induced locomotor activity and sensitization. To further characterize the mechanism(s) underlying the attenuation of cocaine-induced convulsions and lethality, rimcazole and three analogs (SH3/24, SH2/21, SH1/57), with a range of affinities for dopamine transporters and sigma receptors, were evaluated. The highly selective and potent sigma receptor ligand LR176 was used as a reference. Competition binding studies confirmed that the rank order of the compounds at dopamine transporters vs. sigma receptors differed, thus enabling a correlation between the relative anti-cocaine activities of the compounds in behavioral studies and their affinities for dopamine transporters vs. sigma receptors. In behavioral studies, male Swiss Webster mice were pre-treated with one of the compounds (0-60 mg/kg, i.p.), then challenged 15 min later with either a convulsive (60 mg/kg, i.p.) or lethal (125 mg/kg, i.p.) dose of cocaine. When the compounds were ranked according to their protective effect, there was a significant correlation between their anticonvulsant actions and their affinities for sigma receptors, but not dopamine transporters. Although the rimcazole analogs were ineffective against the lethal effects of cocaine, the selective sigma receptor ligand LR176 provided significant protection. These data thus suggest that sigma receptors may mediate some of the toxic effects associated with cocaine and that sigma receptor antagonists may be developed as pharmacotherapeutic agents for this application.
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Affiliation(s)
- R R Matsumoto
- Dept of Pharmaceutical Sciences, University of Oklahoma Health Sciences Center, PO Box 26901, Oklahoma City, OK 73190, USA.
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LiWang AC, Cao JJ, Zheng H, Lu Z, Peiper SC, LiWang PJ. Dynamics study on the anti-human immunodeficiency virus chemokine viral macrophage-inflammatory protein-II (VMIP-II) reveals a fully monomeric protein. Biochemistry 1999; 38:442-53. [PMID: 9890927 DOI: 10.1021/bi9812726] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Encoded by Kaposi's sarcoma-associated herpesvirus, viral macrophage-inflammatory protein-II (VMIP-II) is unique among CC chemokines in that it has been shown to bind to the CXC chemokine receptor CXCR4 as well as to a variety of CC chemokine receptors. This unique binding ability allows vMIP-II to block infection by a wide range of human immunodeficiency virus type I (HIV-1) strains, but the structural and dynamic basis for this broad range of binding is not known. 15N T1, T2 and 15N[-HN] nuclear Overhauser effect (NOE) values of vMIP-II, determined through a series of heteronuclear multidimensional nuclear magnetic resonance (NMR) experiments, were used to obtain information about the backbone dynamics of the protein. Whereas almost all chemokine structures reveal a dimer or multimer, vMIP-II has a rotational correlation time (tauc) of 4.7 +/- 0.3 ns, which is consistent with a monomeric chemokine. The rotational diffusion anisotropy, D parallel/D perpendicular, is approximately 1.5 +/- 0.1. The conformation of vMIP-II is quite similar to other known chemokines, containing an unstructured N-terminus followed by an ordered turn, three beta-strands arranged in an antiparallel fashion, and one C-terminal alpha-helix that lies across the beta-strands. Most of the protein is well-ordered on a picosecond time scale, with an average order parameter S2 (excluding the N-terminal 13 amino acids) of 0.83 +/- 0. 09, and with even greater order in regions of secondary structure. The NMR data reveal that the N-terminus, which in other chemokines has been implicated in receptor binding, extends like a flexible tail in solution and possesses no secondary structure. The region of the ordered turn, including residues 25-28, experiences conformational exchange dynamics. The implications of these NMR data to the broad receptor binding capability of vMIP-II are discussed.
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Affiliation(s)
- A C LiWang
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907-1393, USA.
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