1
|
Liu H, Li J, Wu N, She Y, Luo Y, Huang Y, Quan H, Fu W, Li X, Zeng D, Jia Y. Supplementing Glucose Intake Reverses the Inflammation Induced by a High-Fat Diet by Increasing the Expression of Siglec-E Ligands on Erythrocytes. Inflammation 2024:10.1007/s10753-023-01932-0. [PMID: 38448631 DOI: 10.1007/s10753-023-01932-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 11/10/2023] [Accepted: 11/10/2023] [Indexed: 03/08/2024]
Abstract
Siglec-9/E is a cell surface receptor expressed on immune cells and can be activated by sialoglycan ligands to play an immunosuppressive role. Our previous study showed that increasing the expression of Siglec-9 (the human paralog of mouse Siglec-E) ligands maintains functionally quiescent immune cells in the bloodstream, but the biological effects of Siglec-9 ligand alteration on atherogenesis were not further explored. In the present study, we demonstrated that the atherosclerosis risk factor ox-LDL or a high-fat diet could decrease the expression of Siglec-9/E ligands on erythrocytes. Increased expression of Siglec-E ligands on erythrocytes caused by dietary supplementation with glucose (20% glucose) had anti-inflammatory effects, and the mechanism was associated with glucose intake. In high-fat diet-fed apoE-/- mice, glucose supplementation decreased the area of atherosclerotic lesions and peripheral inflammation. These data suggested that increased systemic inflammation is attenuated by increasing the expression of Siglec-9/E ligands on erythrocytes. Therefore, Siglec-9/E ligands might be valuable targets for atherosclerosis therapy.
Collapse
Affiliation(s)
- Hongmei Liu
- Institute of Materia Medica and Department of Pharmaceutics, College of Pharmacy, Army Medical University, Chongqing, 400038, China
| | - Jin Li
- Institute of Materia Medica and Department of Pharmaceutics, College of Pharmacy, Army Medical University, Chongqing, 400038, China
| | - Niting Wu
- Institute of Materia Medica and Department of Pharmaceutics, College of Pharmacy, Army Medical University, Chongqing, 400038, China
| | - Yuanting She
- Department of Haematology, Daping Hospital of Army Medical University, Chongqing, 400042, China
| | - Yadan Luo
- Institute of Materia Medica and Department of Pharmaceutics, College of Pharmacy, Army Medical University, Chongqing, 400038, China
| | - Yan Huang
- Institute of Materia Medica and Department of Pharmaceutics, College of Pharmacy, Army Medical University, Chongqing, 400038, China
| | - Hongyu Quan
- Institute of Materia Medica and Department of Pharmaceutics, College of Pharmacy, Army Medical University, Chongqing, 400038, China
| | - Wenying Fu
- Institute of Materia Medica and Department of Pharmaceutics, College of Pharmacy, Army Medical University, Chongqing, 400038, China
| | - Xiaohui Li
- Institute of Materia Medica and Department of Pharmaceutics, College of Pharmacy, Army Medical University, Chongqing, 400038, China
| | - Dongfeng Zeng
- Department of Haematology, Daping Hospital of Army Medical University, Chongqing, 400042, China.
| | - Yi Jia
- Institute of Materia Medica and Department of Pharmaceutics, College of Pharmacy, Army Medical University, Chongqing, 400038, China.
| |
Collapse
|
2
|
Quan H, Ren C, He Y, Wang F, Dong S, Jiang H. Application of Biomaterials in Treating Early Osteonecrosis of the Femoral Head: Research Progress and Future Perspectives. Acta Biomater 2023; 164:15-73. [PMID: 37080444 DOI: 10.1016/j.actbio.2023.04.005] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 02/24/2023] [Accepted: 04/05/2023] [Indexed: 04/22/2023]
Abstract
Osteonecrosis of the femoral head (ONFH), a progressive pathological process of femoral head ischemia and osteocyte necrosis, is a refractory orthopedic disease caused by multiple etiologies and there is no complete cure at present. With the extension of ONFH duration, osteocyte apoptosis and trabecular bone loss can decrease the load-bearing capacity of the femoral head, which leads to the collapse of the articular cartilage and subchondral bone. Therefore, an urgent clinical need exists to develop effective treatment strategies of early-stage ONFH for maintaining the hip joint function and preventing femoral head collapse. In recent years, extensive attention has been paid to the application of diverse biomaterials in treating early ONFH for sustaining the normal morphology and function of the autologous femoral head, and slowing disease progression. Herein, we review the research progress of bone grafts, metallic materials, bioceramics, bioglasses and polymer materials for early ONFH treatment, and discuss the biological mechanisms of bone repair and regeneration in the femoral-head necrotic area. We propose suggestions for future research directions, from a special perspective of improving the local microenvironment in femoral head by facilitating vessel-associated osteoclasts (VAOs) generation and coupling of bone-specific angiogenesis and osteogenesis, as well as inhibiting bone-associated osteoclasts (BAOs) and BAO-mediated bone resorption. This review can provide ideas for the research, development, and clinical application of biomaterials for treating early ONFH. STATEMENT OF SIGNIFICANCE: We believe that at least three aspects of this manuscript make it interesting to readers of the Acta Biomaterialia. First, we briefly summarize the incidence, pathogenesis, risk factors, classification criteria and treatment of early osteonecrosis of the femoral head (ONFH). Second, we review the research progress in biomaterials for early ONFH treatment and the biological mechanisms of bone repair and regeneration in femoral-head necrotic area. Third, we propose future research progress on improving the local microenvironment in femoral head by facilitating vessel-associated osteoclasts generation and coupling of bone-specific angiogenesis and osteogenesis, as well as inhibiting bone-associated osteoclasts and bone resorption. We hope this review can provide ideas for the research, development, and clinical application of biomaterials for treating early ONFH.
Collapse
Affiliation(s)
- Hongyu Quan
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, 400038, China; College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Chencan Ren
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, 400038, China; College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Yuwei He
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, 400038, China
| | - Fuyou Wang
- Center for Joint Surgery, Southwest Hospital, Third Military Medical University, Chongqing, 400038, China.
| | - Shiwu Dong
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, 400038, China; State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing 400038, China.
| | - Hong Jiang
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, 400038, China.
| |
Collapse
|
3
|
Kemp K, Norris C, Quan H, Santana M. Women discharged from inpatient cardiology units report a worse experience: results from four years of survey data. Can J Cardiol 2021. [DOI: 10.1016/j.cjca.2020.02.063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
|
4
|
Lei L, Dykstra S, Cornhill A, Labib D, Mikami Y, Satriano A, Flewitt J, Feutcher P, Howarth A, Heydari B, Merchant N, Lydell C, Lee J, Quan H, White J. Development and validation of a risk model for the prediction of cardiovascular hospital admission using CMR-based phenotype in patients with known or suspected cardiovascular disease. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Cardiovascular diseases remain the leading cause of morbidity worldwide and impose the highest economic burden among noncommunicable diseases. Much of these costs are related to hospitalizations for adverse cardiovascular events, which may be reduced by targeted management of high-risk patients. Cardiac markers derived from CMR imaging have been shown to be strong independent predictors of prognosis within specific cohorts. However, its capacity to broadly contribute to risk models aimed at predicting incident cardiac hospitalization has not been demonstrated.
Purpose
Using a large clinical outcomes registry of patients clinically referred for CMR, develop and validate a nomogram for prediction of cardiovascular hospital admission.
Methods
A total of 7127 consecutive patients were prospectively recruited between 02/2015 and 07/2019. All patients completed standardized health questionnaires and CMR imaging protocols. A nomogram was developed for prediction of cardiovascular hospitalization, inclusive of admission for heart failure, MI, cardiac arrest, heart transplant, LVAD implantation, or stroke. The risk model was derived from 80% (n=5702) of the cohort using Cox modelling that included CMR, medication, laboratory, and patient-reported health variables. Model validation was assessed by discrimination and calibration procedures applied to the remaining 20% of patients (n=1425). A minimum follow-up of six months was mandated.
Results
The derivation cohort was comprised of 38% females with a median age of 56 (IQR 44–65) years. During a median follow-up of 934 days, 514 (9.0%) events occurred. The validation cohort was similarly comprised of 37% females with a median age of 57 (IQR 44–66) years. During a median follow-up of 970 days, 142 (10.0%) events occurred. Numerous CMR parameters were significantly different between those experiencing versus not experiencing the primary composite outcome, including: LVEF (44% vs 59%, p<0.0001), RVEF (52% vs 55%, p<0.0001), LV mass (65g/m2 vs 56g/m2, p<0.0001), and LA volume (43mL/m2 vs 34mL/m2, p<0.0001). These and other CMR-derived characteristics were independently predictive of the composite outcome by univariate modelling (Figure 1A). An eight-variable nomogram (Figure 1B) was developed using a stepwise multivariate model that exhibited high discrimination in both the derivation and validation cohorts (C-index 0.81 and 0.83, respectively). Continuous model calibration curves indicated satisfactory external performance. The model was able to discriminate risk of hospitalization at 1-year with a dynamic range of 20–99%.
Conclusion
Using data available at time of CMR imaging, we derived and validated a Cox-based nomogram that offers robust prediction of future cardiovascular admissions. This tool may provide value for the identification of patients who may benefit from targeted surveillance and management strategies, and may offer a foundation for improved patient-specific cost modelling.
Figure 1
Funding Acknowledgement
Type of funding source: None
Collapse
Affiliation(s)
- L Lei
- Libin Cardiovascular Institute of Alberta, Calgary, Canada
| | - S Dykstra
- University of Calgary Foothills Hospital, Calgary, Canada
| | - A Cornhill
- University of Calgary Foothills Hospital, Calgary, Canada
| | - D Labib
- University of Calgary Foothills Hospital, Calgary, Canada
| | - Y Mikami
- University of Calgary Foothills Hospital, Calgary, Canada
| | - A Satriano
- University of Calgary Foothills Hospital, Calgary, Canada
| | - J Flewitt
- University of Calgary Foothills Hospital, Calgary, Canada
| | - P Feutcher
- University of Calgary Foothills Hospital, Calgary, Canada
| | - A Howarth
- Libin Cardiovascular Institute of Alberta, Calgary, Canada
| | - B Heydari
- Libin Cardiovascular Institute of Alberta, Calgary, Canada
| | - N Merchant
- University of Calgary Foothills Hospital, Calgary, Canada
| | - C Lydell
- University of Calgary Foothills Hospital, Calgary, Canada
| | - J Lee
- Libin Cardiovascular Institute of Alberta, Calgary, Canada
| | - H Quan
- Libin Cardiovascular Institute of Alberta, Calgary, Canada
| | - J.A White
- Libin Cardiovascular Institute of Alberta, Calgary, Canada
| |
Collapse
|
5
|
Quan H, Wang L, Wang Z, Mei X, Ning J, She D. Alkylacylimidazoles in Claisen–Schmidt and Knoevenagel Condensations. Russ J Org Chem 2020. [DOI: 10.1134/s1070428020080187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
6
|
Peng X, Yang C, Kong X, Xiang Y, Dai W, Quan H. Multifunctional nanocomposites MGO/FU-MI inhibit the proliferation of tumor cells and enhance the effect of chemoradiotherapy in vivo and in vitro. Clin Transl Oncol 2020; 22:1875-1884. [PMID: 32170638 DOI: 10.1007/s12094-020-02331-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 02/25/2020] [Indexed: 12/21/2022]
Abstract
PURPOSE The limitation of surgery, radiotherapy and chemotherapy in the treatment of cancer and the rise of the application of nanomaterials in the field of biomedicine have promoted the application of various nanomaterials in the combination of radiotherapy and chemotherapy in the treatment of cancer. To improve the efficiency of cancer treatment, the multifunctional nanocomposites MGO/FU-MI (MGO/FU-MI NCs) were used for combination chemotherapy and radiotherapy to verify its effectiveness in treating tumors. METHODS The proliferation activity of MGO/FU-MI NCs on MC-38 and B16 cells was detected by CCK-8, and the level of apoptosis and reactive oxygen species were detected by flow cytometry. To verify its efficacy in the combination of chemoradiotherapy, different treatment regimens were developed for several groups of tumor-bearing mice. RESULTS The MGO/FU-MI NCs can induce apoptosis, stimulate ROS production, and inhibit cell proliferation. In vivo experiments, when MGO/FU-MI NCs are used alone for chemotherapy, have a certain therapeutic effect on mouse tumors. When MGO/FU-MI NCs are combined with radiation, the tumor volume can be significantly reduced and the survival time of mice is significantly prolonged. CONCLUSION The MGO/FU-MI NCs are very effective in the treatment of tumors when combined with radiotherapy and chemotherapy, and have the potential to be a combination of radiotherapy and chemotherapy.
Collapse
Affiliation(s)
- X Peng
- Key Laboratory of Artificial Micro-Structures of the Ministry of Education and Center for Electronic Microscopy and Department of Physics, Wuhan University, Wuhan, Hubei, China
| | - C Yang
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - X Kong
- Key Laboratory of Artificial Micro-Structures of the Ministry of Education and Center for Electronic Microscopy and Department of Physics, Wuhan University, Wuhan, Hubei, China
| | - Y Xiang
- Key Laboratory of Artificial Micro-Structures of the Ministry of Education and Center for Electronic Microscopy and Department of Physics, Wuhan University, Wuhan, Hubei, China
| | - W Dai
- Key Laboratory of Artificial Micro-Structures of the Ministry of Education and Center for Electronic Microscopy and Department of Physics, Wuhan University, Wuhan, Hubei, China
| | - H Quan
- Key Laboratory of Artificial Micro-Structures of the Ministry of Education and Center for Electronic Microscopy and Department of Physics, Wuhan University, Wuhan, Hubei, China.
| |
Collapse
|
7
|
Lee S, Xu Y, D Apos Souza AG, Martin EA, Doktorchik C, Zhang Z, Quan H. Unlocking the Potential of Electronic Health Records for Health Research. Int J Popul Data Sci 2020; 5:1123. [PMID: 32935049 PMCID: PMC7473254 DOI: 10.23889/ijpds.v5i1.1123] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [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] [Indexed: 12/14/2022] Open
Abstract
Electronic health records (EHRs), originally designed to facilitate health care delivery, are becoming a valuable data source for health research. EHR systems have two components, both of which have various components, and points of data entry, management, and analysis. The “front end” refers to where the data are entered, primarily by healthcare workers (e.g. physicians and nurses). The second component of EHR systems is the electronic data warehouse, or “back-end,” where the data are stored in a relational database. EHR data elements can be of many types, which can be categorized as structured, unstructured free-text, and imaging data. The Sunrise Clinical Manager (SCM) EHR is one example of an inpatient EHR system, which covers the city of Calgary (Alberta, Canada). This system, under the management of Alberta Health Services, is now being explored for research use. The purpose of the present paper is to describe the SCM EHR for research purposes, showing how this generalizes to EHRs in general. We further discuss advantages, challenges (e.g. potential bias and data quality issues), analytical capacities, and requirements associated with using EHRs in a health research context.
Collapse
Affiliation(s)
- S Lee
- Department of Community Health Sciences, University of Calgary.,Centre for Health Informatics, University of Calgary.,Analytics, Alberta Health Services
| | - Y Xu
- Department of Community Health Sciences, University of Calgary.,Centre for Health Informatics, University of Calgary
| | - A G D Apos Souza
- Centre for Health Informatics, University of Calgary.,Analytics, Alberta Health Services
| | - E A Martin
- Centre for Health Informatics, University of Calgary.,Analytics, Alberta Health Services
| | - C Doktorchik
- Department of Community Health Sciences, University of Calgary.,Centre for Health Informatics, University of Calgary
| | - Z Zhang
- Department of Community Health Sciences, University of Calgary.,Centre for Health Informatics, University of Calgary
| | - H Quan
- Department of Community Health Sciences, University of Calgary.,Centre for Health Informatics, University of Calgary
| |
Collapse
|
8
|
Quan H, He Y, Sun J, Yang W, Luo W, Dou C, Kang F, Zhao C, He J, Yang X, Dong S, Jiang H. Correction to Chemical Self-Assembly of Multifunctional Hydroxyapatite with Coral-like Nanostructure for Osteoporotic Bone Reconstruction. ACS Appl Mater Interfaces 2019; 11:48627. [PMID: 31823596 DOI: 10.1021/acsami.9b21001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
|
9
|
Garies S, Cummings M, Forst B, McBrien K, Soos B, Taylor M, Drummond N, Manca D, Duerksen K, Quan H, Williamson T. Achieving quality primary care data: a description of the Canadian Primary Care Sentinel Surveillance Network data capture, extraction, and processing in Alberta. Int J Popul Data Sci 2019; 4:1132. [PMID: 34095540 PMCID: PMC8142949 DOI: 10.23889/ijpds.v4i2.1132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Introduction Electronic medical record (EMR) databases have become increasingly popular for secondary purposes, such as health research. The Canadian Primary Care Sentinel Surveillance Network (CPCSSN) is the first and only pan-Canadian primary care EMR data repository, with de-identified health information for almost two million Canadians. Comprehensive and freely available documentation describing the data ‘lifecycle’ is important for assessing potential data quality issues and appropriate interpretation of research findings. Here, we describe the flow and transformation of CPCSSN data in the province of Alberta. Approach In Alberta, the data originate from 54 publicly-funded primary care settings, including one community pediatric clinic, with 318 providers contributing de-identified EMR data for 410,951 patients (as of December 2018). Data extraction methods have been developed for five different EMR systems, and include both backend and automated frontend extractions. The raw EMR data are transformed according to specific rules, including trimming implausible values, converting values and free text to standard terminologies or classification systems, and structuring the data into a common CPCSSN format. Following local data extraction and processing, the data are transferred to a central repository and made available for research and disease surveillance. Conclusion This paper aims to provide important contextual information to future CPCSSN data users.
Collapse
Affiliation(s)
- S Garies
- Department of Family Medicine, University of Calgary, G012 Health Sciences Centre, 3330 Hospital Drive NW, Calgary Alberta, Canada, T2N 4N1.,Department of Community Health Sciences, University of Calgary, 3280 Hospital Drive NW, Calgary, Alberta, Canada, T2N 4Z6
| | - M Cummings
- Department of Family Medicine, University of Alberta, 6-10 University Terrace, Edmonton, Alberta, Canada, T6G 2T4
| | - B Forst
- Department of Family Medicine, University of Alberta, 6-10 University Terrace, Edmonton, Alberta, Canada, T6G 2T4
| | - K McBrien
- Department of Family Medicine, University of Calgary, G012 Health Sciences Centre, 3330 Hospital Drive NW, Calgary Alberta, Canada, T2N 4N1.,Department of Community Health Sciences, University of Calgary, 3280 Hospital Drive NW, Calgary, Alberta, Canada, T2N 4Z6
| | - B Soos
- Department of Family Medicine, University of Calgary, G012 Health Sciences Centre, 3330 Hospital Drive NW, Calgary Alberta, Canada, T2N 4N1.,Department of Community Health Sciences, University of Calgary, 3280 Hospital Drive NW, Calgary, Alberta, Canada, T2N 4Z6
| | - M Taylor
- Department of Family Medicine, University of Alberta, 6-10 University Terrace, Edmonton, Alberta, Canada, T6G 2T4
| | - N Drummond
- Department of Family Medicine, University of Calgary, G012 Health Sciences Centre, 3330 Hospital Drive NW, Calgary Alberta, Canada, T2N 4N1.,Department of Community Health Sciences, University of Calgary, 3280 Hospital Drive NW, Calgary, Alberta, Canada, T2N 4Z6.,Department of Family Medicine, University of Alberta, 6-10 University Terrace, Edmonton, Alberta, Canada, T6G 2T4
| | - D Manca
- Department of Family Medicine, University of Alberta, 6-10 University Terrace, Edmonton, Alberta, Canada, T6G 2T4
| | - K Duerksen
- Department of Family Medicine, University of Alberta, 6-10 University Terrace, Edmonton, Alberta, Canada, T6G 2T4
| | - H Quan
- Department of Community Health Sciences, University of Calgary, 3280 Hospital Drive NW, Calgary, Alberta, Canada, T2N 4Z6
| | - T Williamson
- Department of Community Health Sciences, University of Calgary, 3280 Hospital Drive NW, Calgary, Alberta, Canada, T2N 4Z6
| |
Collapse
|
10
|
King JA, Jeong J, Underwood F, Quan J, Panaccione N, Windsor JW, Coward S, deBruyn J, Ronksley P, Shaheen AM, Quan H, Veldhuyzen van Zanten S, Lebwohl B, Kaplan GG. A261 INCIDENCE OF CELIAC DISEASE IS INCREASING OVER TIME: A SYSTEMATIC REVIEW AND META-ANALYSIS. J Can Assoc Gastroenterol 2019. [DOI: 10.1093/jcag/gwz006.260] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- J A King
- University of Calgary, Calgary, AB, Canada
| | - J Jeong
- University of Calgary, Calgary, AB, Canada
| | | | - J Quan
- University of Calgary, Calgary, AB, Canada
| | | | | | - S Coward
- University of Calgary, Calgary, AB, Canada
| | - J deBruyn
- Paediatrics , University of Calgary, Calgary, AB, Canada
| | - P Ronksley
- University of Calgary, Calgary, AB, Canada
| | | | - H Quan
- University of Calgary, Calgary, AB, Canada
| | | | - B Lebwohl
- Columbia University, White Plains, NY
| | - G G Kaplan
- Medicine and Community Health Sciences, University of Calgary, Calgary, AB, Canada
| |
Collapse
|
11
|
Kim IS, Park HC, Quan H, Kim Y, Wu L, Yang HC. Effects of triethylene glycol dimethacrylate and hydroxyethyl methacrylate on macrophage polarization. Int Endod J 2019; 52:987-998. [PMID: 30703248 DOI: 10.1111/iej.13088] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 01/25/2019] [Indexed: 12/24/2022]
Abstract
AIM To evaluate the effects of hydrophilic dental resin monomers, triethylene glycol dimethacrylate (TEGDMA) and hydroxyethyl methacrylate (HEMA), on the polarization of a human monocyte cell line (THP-1). METHODOLOGY THP-1 cells were treated with resin monomers at noncytotoxic concentrations for 48 h and were analysed for CD86 and CD206 expressions using flow cytometry. The cells were stimulated for polarization in the presence of resin monomers (co-treatment) or after treatment with monomers (pre-treatment). CD86 and CD206 mRNA in co-treated cells was evaluated using quantitative real-time polymerase chain reaction. The release of TNF-α and TGF-β by pre-treated and co-treated cells was assessed using enzyme-linked immunosorbent assay. Morphological changes of macrophages during polarization were observed using bright-field microscopy. One-way analysis of variance was used for statistical analysis. RESULTS TEGDMA (1 mmol L-1 ) and HEMA (2 mmol L-1 ) did not induce CD86 and CD206 expressions in THP-1 cells but rather inhibited their expressions in the co-treated cells. The inhibitory effects also appeared at the transcription level. However, the expression of surface markers was not affected by pre-treatment with resin monomers. The release of TNF-α and TGF-β by M1- and M2-stimulated cells, respectively, was suppressed by co-treatment (P < 0.05). Microscopic studies revealed that co-treatment with resin monomers suppressed polarization-associated morphological changes such as cell volume increase. CONCLUSIONS TEGDMA and HEMA inhibited macrophage polarization to both M1 and M2 at the transcription level, and the inhibitory effects disappeared upon the removal of resin monomers from the cell culture.
Collapse
Affiliation(s)
- I-S Kim
- Department of Dental Biomaterials Science, Dental Research Institute and BK21 Plus Program, School of Dentistry, Seoul National University, Seoul, Korea
| | - H C Park
- Department of Dental Biomaterials Science, Dental Research Institute and BK21 Plus Program, School of Dentistry, Seoul National University, Seoul, Korea
| | - H Quan
- Department of Dental Biomaterials Science, Dental Research Institute and BK21 Plus Program, School of Dentistry, Seoul National University, Seoul, Korea
| | - Y Kim
- Department of Dental Biomaterials Science, Dental Research Institute and BK21 Plus Program, School of Dentistry, Seoul National University, Seoul, Korea
| | - L Wu
- Department of Dental Biomaterials Science, Dental Research Institute and BK21 Plus Program, School of Dentistry, Seoul National University, Seoul, Korea
| | - H-C Yang
- Department of Dental Biomaterials Science, Dental Research Institute and BK21 Plus Program, School of Dentistry, Seoul National University, Seoul, Korea
| |
Collapse
|
12
|
Liu C, Cao Z, Bai Y, Dou C, Gong X, Liang M, Dong R, Quan H, Li J, Dai J, Kang F, Zhao C, Dong S. LncRNA AK077216 promotes RANKL-induced osteoclastogenesis and bone resorption via NFATc1 by inhibition of NIP45. J Cell Physiol 2018; 234:1606-1617. [PMID: 30132869 DOI: 10.1002/jcp.27031] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 06/25/2018] [Indexed: 12/11/2022]
Abstract
Osteoclasts derived from the monocyte/macrophage hematopoietic lineage regulate bone resorption, a process balanced by bone formation in the continual renewal of the skeletal system. As dysfunctions of these cells result in bone metabolic diseases such as osteoporosis and osteopetrosis, the exploration of the mechanisms regulating their differentiation is a priority. A potential mechanism may involve long noncoding RNAs (lncRNAs), which are known to regulate various cell biology activities, including proliferation, differentiation, and apoptosis. The expression of the lncRNA AK077216 (Lnc-AK077216) is significantly upregulated during osteoclastogenesis identified by microarray and verified by qPCR. Up- and downregulation of Lnc-AK077216, respectively promotes and inhibits osteoclast differentiation, bone resorption, and the expression of related genes on the basis of tartrate-resistant acid phosphatase staining, qPCR, and western blot results. In addition, Lnc-AK077216 suppresses NIP45 expression and promotes the expression of NFATc1, an essential transcription factor during osteoclastogenesis. Besides, it was found that the expression of Lnc-AK077216 and Nfatc1 is upregulated, whereas Nip45 expression is downregulated in bone marrow and spleen tissues of ovariectomized mice. The results suggest that Lnc-AK077216 regulates NFATc1 expression and promotes osteoclast formation and function, providing a novel mechanism of osteoclastogenesis and a potential biomarker or a new drug target for osteoporosis.
Collapse
Affiliation(s)
- Chuan Liu
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University (Army Medical University), Chongqing, China.,Department of Orthopedic, The Army General Hospital, Beijing, China
| | - Zhen Cao
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University (Army Medical University), Chongqing, China
| | - Yun Bai
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University (Army Medical University), Chongqing, China
| | - Ce Dou
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University (Army Medical University), Chongqing, China
| | - Xiaoshan Gong
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University (Army Medical University), Chongqing, China
| | - Mengmeng Liang
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University (Army Medical University), Chongqing, China
| | - Rui Dong
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University (Army Medical University), Chongqing, China
| | - Hongyu Quan
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University (Army Medical University), Chongqing, China
| | - Jianmei Li
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University (Army Medical University), Chongqing, China
| | - Jingjin Dai
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University (Army Medical University), Chongqing, China
| | - Fei Kang
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University (Army Medical University), Chongqing, China
| | - Chunrong Zhao
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University (Army Medical University), Chongqing, China
| | - Shiwu Dong
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University (Army Medical University), Chongqing, China.,State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University (Army Medical University), Chongqing, China
| |
Collapse
|
13
|
Quan H, He Y, Sun J, Yang W, Luo W, Dou C, Kang F, Zhao C, He J, Yang X, Dong S, Jiang H. Chemical Self-Assembly of Multifunctional Hydroxyapatite with a Coral-like Nanostructure for Osteoporotic Bone Reconstruction. ACS Appl Mater Interfaces 2018; 10:25547-25560. [PMID: 30001112 DOI: 10.1021/acsami.8b09879] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Bone defects/fractures are common in older people suffering from osteoporosis. Traditional hydroxyapatite (HA) materials for osteoporotic bone repair face many challenges, including limited bone formation and aseptic loosening of orthopedic implants. In this study, a new multifunctional HA is synthesized by spontaneous assembly of alendronate (AL) and Fe3O4 onto HA nanocrystals for osteoporotic bone regeneration. The chemical coordination of AL and Fe3O4 with HA does not induce lattice deformation, resulting in a functionalized HA (Func-HA) with proper magnetic property and controlled release manner. The Func-HA nanocrystals have been encapsulated in polymer substrates to further investigate their osteogenic capability. In vitro and in vivo evaluations reveal that both AL and Fe3O4, especially the combination of two functional groups on HA, can inhibit osteoclastic activity and promote osteoblast proliferation and differentiation, as well as enhance implant osseointegration and accelerate bone remodeling under osteoporotic condition. The as-developed Func-HA with coordinating antiresorptive ability, magnetic property, and osteoconductivity might be a desirable biomaterial for osteoporotic bone defect/fracture treatment.
Collapse
Affiliation(s)
| | | | | | - Weihu Yang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering , Chongqing University , Chongqing 400044 , PR China
| | - Wei Luo
- Department of Orthopedics , Guizhou Provincial People's Hospital , Guiyang 550002 , PR China
| | | | | | | | | | | | - Shiwu Dong
- State Key Laboratory of Trauma, Burns and Combined Injury , Third Military Medical University , Chongqing 400038 , China
| | | |
Collapse
|
14
|
Quan H, Liang M, Li N, Dou C, Liu C, Bai Y, Luo W, Li J, Kang F, Cao Z, Yang X, Jiang H, Dong S. LncRNA-AK131850 Sponges MiR-93-5p in Newborn and Mature Osteoclasts to Enhance the Secretion of Vascular Endothelial Growth Factor a Promoting Vasculogenesis of Endothelial Progenitor Cells. Cell Physiol Biochem 2018; 46:401-417. [DOI: 10.1159/000488474] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Accepted: 02/27/2018] [Indexed: 11/19/2022] Open
Abstract
Background/Aims: In the process of bone development and remodeling, the vasculature is regarded as the communicative network between the bone and neighboring tissues. Recently, it has been reported that the processes of angiogenesis and osteogenesis are coupled temporally and spatially. However, few studies reported the relationship and relevant mechanism between osteoclastogenesis and vasculogenesis. Methods: Arraystar Mouse lncRNA microarray V3.0 was firstly used to analyze the differentially expressed lncRNA genes in osteoclast different stages during osteoclastogenesis. Cell counting kit 8 (CCK-8) analysis, quantitative real-time polymerase chain reaction (qRT-PCR) analysis, migration and tube formation assays were used to detect impact of osteoclast different stages on the proliferation, differentiation, migration and tube formation of endothelial progenitor cells (EPCs), respectively. Finally, transfection of AK131850 shRNA, miR-93-5p mimic and miR-93-5p inhibitor, qRT-PCR, western blotting, enzyme-linked immunosorbent assay (ELISA), fluorescence in situ hybridization (FISH) and luciferase reporter assay were carried out to dissect molecular mechanisms. Results: In this study, we found that newborn OCs (N-OC) and mature OCs (M-OC) during osteoclastogenesis significantly promoted proliferation, differentiation, migration and tube formation of endothelial progenitor cells (EPCs). Through lncRNA microarray and GO&pathway analysis, we found that AK131850 and co-expressed gene, vascular endothelial growth factor a (VEGFa), were significantly up-regulated in N-OC and M-OC. After inhibition of AK131850 the promoting effect of N-OC and M-OC on EPCs was reversed. Furthermore, we found that AK131850 directly competed miR-93-5p in N-OC and M-OC through sponge, thereby increasing VEGFa transcription, expression and secretion through derepressing of miR-93-5p on VEGFa. Conclusion: Our results provided the first finding that lncRNA-AK131850 sponged miR-93-5p in N-OC and M-OC during osteoclastogenesis to enhance the secretion of VEGFa, thus promoting vasculogenesis of EPCs.
Collapse
|
15
|
Bai Y, Liu C, Fu L, Gong X, Dou C, Cao Z, Quan H, Li J, Kang F, Dai J, Zhao C, Dong S. Mangiferin enhances endochondral ossification-based bone repair in massive bone defect by inducing autophagy through activating AMP-activated protein kinase signaling pathway. FASEB J 2018; 32:4573-4584. [PMID: 29547701 DOI: 10.1096/fj.201701411r] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Endochondral ossification is crucial for bone formation in both adult bone repair process and embryo long-bone development. In endochondral ossification, bone marrow-derived mesenchymal stem cells (BMSCs) first differentiate to chondrocytes, then BMSC-derived chondrocytes endure a hypertrophic process to generate new bone. Endochondral ossification-based bone repair is a promising strategy to cure massive bone defect, which is a major clinical issue in orthopedics. However, challenges still remain for this novel strategy. One challenge is to ensure the sufficient hypertrophic differentiation. Another is to maintain the survival of the above hypertrophic chondrocytes under the hypoxic environment of massive bone defect. To solve this issue, mangiferin (MAG) was introduced to endochondral ossification-based bone repair. In this report, we proved MAG to be a novel autophagy inducer, which promoted BMSC-derived hypertrophic chondrocyte survival against hypoxia-induced injury through inducing autophagy. Furthermore, MAG enhances hypertrophic differentiation of BMSC-derived chondrocytes via upregulating key hypertrophic markers. Mechanistically, MAG induced autophagy in BMSC-derived chondrocytes by promoting AMPKα phosphorylation. Additionally, MAG balanced the expression of sex-determining region Y-box 9 and runt-related transcription factor 2 to facilitate hypertrophic differentiation. These results indicated that MAG was a potential drug to improve the efficacy of endochondral ossification-based bone repair in massive bone defects.-Bai, Y., Liu, C., Fu, L., Gong, X., Dou, C., Cao, Z., Quan, H., Li, J., Kang, F., Dai, J., Zhao, C., Dong, S. Mangiferin enhances endochondral ossification-based bone repair in massive bone defect by inducing autophagy through activating AMP-activated protein kinase signaling pathway.
Collapse
Affiliation(s)
- Yun Bai
- Department of Anatomy, Histology, and Embryology, School of Basic Medicine, Third Military Medical University, Chongqing, China.,Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, China
| | - Chuan Liu
- Department of Anatomy, Histology, and Embryology, School of Basic Medicine, Third Military Medical University, Chongqing, China.,Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, China.,Institute of Trauma Orthopedics, Army General Hospital of People's Liberation Army, Beijing, China
| | - Lei Fu
- Institute of Trauma Orthopedics, The 89th Hospital of People's Liberation Army, Weifang, China
| | - Xiaoshan Gong
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, China
| | - Ce Dou
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, China
| | - Zhen Cao
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, China
| | - Hongyu Quan
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, China
| | - Jianmei Li
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, China
| | - Fei Kang
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, China
| | - Jingjin Dai
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, China
| | - Chunrong Zhao
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, China
| | - Shiwu Dong
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, China.,State Key Laboratory of Trauma, Burns, and Combined Injury, Third Military Medical University, Chongqing, China
| |
Collapse
|
16
|
Liu Y, Liao S, Quan H, Lin Y, Li J, Yang Q. Involvement of microRNA-135a-5p in the Protective Effects of Hydrogen Sulfide Against Parkinson's Disease. Cell Physiol Biochem 2016; 40:18-26. [DOI: 10.1159/000452521] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/09/2016] [Indexed: 11/19/2022] Open
Abstract
Background/Aims: Development of effective therapeutic drugs for Parkinson's disease is in great need. During the progression of Parkinson's disease, Rho-associated protein kinase 2 (ROCK2) is activated to promote neurodegeneration. Hydrogen sulfide (H2S) has a neuroprotective effect during the neural injury of Parkinson's disease. However, the mechanisms that underlie the effects of ROCK2 and H2S remain ill-defined. In the current study, we addressed these questions. Methods: We used a 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced mouse subacute model of Parkinson's disease to study the effects of H2S on astrocytic activation in the mouse striatum, on the levels of tyrosine-hydroxylase (TH)-positive neuron loss, on the apomorphine-induced rotational behavior of the mice, and on the changes in ROCK2 and miR-135a-5p expression. Plasmid transfection was applied to modify miR-135a-5p levels in a neuronal cell line HCN-1A. Bioinformatics analysis was performed to predict the relationship between ROCK2 and miR-135a-5p in neuronal cells, and then was confirmed by luciferase reporter assay. Results: H2S alleviated MPTP-induced astrocytic activation in the mouse striatum, alleviated the increases in TH-positive neuron loss, and improved the apomorphine-induced rotational behavior of the mice. H2S significantly attenuated the increases in ROCK2 and the decreases in miR-135a-5p by MPTP. MiR-135a-5p targeted the 3'-UTR of ROCK2 mRNA to inhibit its translation in neuronal cells. Conclusion: MiR-135a-5p-regulated ROCK2 may play a role in the protective effects of hydrogen sulfide against Parkinson's disease.
Collapse
|
17
|
Dou C, Chen Y, Ding N, Li N, Jiang H, Zhao C, Kang F, Cao Z, Quan H, Luo F, Xu J, Dong S. Xanthotoxin prevents bone loss in ovariectomized mice through the inhibition of RANKL-induced osteoclastogenesis. Osteoporos Int 2016; 27:2335-2344. [PMID: 26809192 DOI: 10.1007/s00198-016-3496-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Accepted: 01/15/2016] [Indexed: 11/29/2022]
Abstract
UNLABELLED Xanthotoxin (XAT) is extracted from the seeds of Ammi majus. Here, we reported that XAT has an inhibitory effect on osteoclastogenesis in vitro through the suppression of both receptor activator of nuclear factor-κB ligand (RANKL)-induced ROS generation and Ca(2+) oscillations. In vivo studies showed that XAT treatment decreases the osteoclast number, prevents bone loss, and restores bone strength in ovariectomized mice. INTRODUCTION Excessive osteoclast formation and the resultant increase in bone resorption activity are key pathogenic factors of osteoporosis. In the present study, we have investigated the effects of XAT, a natural furanocoumarin, on the RANKL-mediated osteoclastogenesis in vitro and on ovariectomy-mediated bone loss in vivo. METHODS Cytotoxicity of XAT was evaluated using bone marrow macrophages (BMMs). Osteoclast differentiation, formation, and fusion were assessed using the tartrate-resistant acid phosphatase (TRAP) stain, the actin cytoskeleton and focal adhesion (FAK) stain, and the fusion assay, respectively. Osteoclastic bone resorption was evaluated using the pit formation assay. Reactive oxygen species (ROS) generation and removal were evaluated using dichlorodihydrofluorescein diacetate (DCFH-DA). Ca(2+) oscillations and their downstream signaling targets were then detected. The ovariectomized (OVX) mouse model was adopted for our in vivo studies. RESULTS In vitro assays revealed that XAT inhibited the differentiation, formation, fusion, and bone resorption activity of osteoclasts. The inhibitory effect of XAT on osteoclastogenesis was associated with decreased intracellular ROS generation. XAT treatment also suppressed RANKL-induced Ca(2+) oscillations and the activation of the resultant downstream calcium-CaMKK/PYK2 signaling. Through these two mechanisms, XAT downregulated the key osteoclastogenic factors nuclear factor of activated T cells c1 (NFATc1) and c-FOS. Our in vivo studies showed that XAT treatment decreases the osteoclast number, prevents bone loss, rescues bone microarchitecture, and restores bone strength in OVX mice. CONCLUSION Our findings indicate that XAT is protective against ovariectomy-mediated bone loss through the inhibition of RANKL-mediated osteoclastogenesis. Therefore, XAT may be considered to be a new therapeutic candidate for treating osteoporosis.
Collapse
Affiliation(s)
- C Dou
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Gaotanyan Street No.30, Chongqing, 400038, China
- Department of Orthopedics, Southwest Hospital, Third Military Medical University, Chongqing, 400038, China
| | - Y Chen
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Gaotanyan Street No.30, Chongqing, 400038, China
| | - N Ding
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Gaotanyan Street No.30, Chongqing, 400038, China
| | - N Li
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Gaotanyan Street No.30, Chongqing, 400038, China
| | - H Jiang
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Gaotanyan Street No.30, Chongqing, 400038, China
| | - C Zhao
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Gaotanyan Street No.30, Chongqing, 400038, China
| | - F Kang
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Gaotanyan Street No.30, Chongqing, 400038, China
| | - Z Cao
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Gaotanyan Street No.30, Chongqing, 400038, China
| | - H Quan
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Gaotanyan Street No.30, Chongqing, 400038, China
| | - F Luo
- Department of Orthopedics, Southwest Hospital, Third Military Medical University, Chongqing, 400038, China
| | - J Xu
- Department of Orthopedics, Southwest Hospital, Third Military Medical University, Chongqing, 400038, China
| | - S Dong
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Gaotanyan Street No.30, Chongqing, 400038, China.
| |
Collapse
|
18
|
King-Shier KM, Singh S, Khan NA, LeBlanc P, Lowe JC, Mather CM, Chong E, Quan H. Ethno-Cultural Considerations in Cardiac Patients’ Medication Adherence. Clin Nurs Res 2016; 26:576-591. [DOI: 10.1177/1054773816646078] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
We aimed to develop an in-depth understanding about factors that influence cardiac medication adherence among South Asian, Chinese, and European White cardiac patients. Sixty-four patients were purposively sampled from an ongoing study cohort. Interviews were audio-recorded and transcribed for analyses. Physicians’ culturally sensitive communication and patients’ motivation to live a symptom-free and longer life enhanced adherence. European Whites were motivated to enhance personal well-being and enjoy family life. South Asians’ medication adherence was influenced by the desire to fulfill the will of God and family responsibilities. The Chinese were motivated to avoid pain, illness, and death, and to obey a health care provider. The South Asians and Chinese wanted to ultimately reduce medication use. Previous positive experiences, family support, and establishing a routine also influenced medication adherence. Deterrents to adherence were essentially the reverse of the motivators/facilitators. This analysis represents an essential first step forward in developing ethno-culturally tailored interventions to optimize adherence.
Collapse
Affiliation(s)
| | - S. Singh
- University of Calgary, Alberta, Canada
| | - N. A. Khan
- University of British Columbia, Vancouver, Canada
| | | | | | | | - E. Chong
- University of British Columbia, Vancouver, Canada
| | - H. Quan
- University of Calgary, Alberta, Canada
| |
Collapse
|
19
|
Dou C, Ding N, Xing J, Zhao C, Kang F, Hou T, Quan H, Chen Y, Dai Q, Luo F, Xu J, Dong S. Dihydroartemisinin attenuates lipopolysaccharide-induced osteoclastogenesis and bone loss via the mitochondria-dependent apoptosis pathway. Cell Death Dis 2016; 7:e2162. [PMID: 27031959 PMCID: PMC4823966 DOI: 10.1038/cddis.2016.69] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2015] [Revised: 01/27/2016] [Accepted: 03/02/2016] [Indexed: 12/19/2022]
Abstract
Dihydroartemisinin (DHA) is a widely used antimalarial drug isolated from the plant Artemisia annua. Recent studies suggested that DHA has antitumor effects utilizing its reactive oxygen species (ROS) yielding mechanism. Here, we reported that DHA is inhibitory on lipopolysaccharide (LPS)-induced osteoclast (OC) differentiation, fusion and bone-resorption activity in vitro. Intracellular ROS detection revealed that DHA could remarkably increase ROS accumulation during LPS-induced osteoclastogenesis. Moreover, cell apoptosis was also increased by DHA treatment. We found that DHA-activated caspase-3 increased Bax/Bcl-2 ratio during LPS-induced osteoclastogenesis. Meanwhile, the translocation of apoptotic inducing factor (AIF) and the release of cytochrome c from the mitochondria into the cytosol were observed, indicating that ROS-mediated mitochondrial dysfunction is crucial in DHA-induced apoptosis during LPS-induced osteoclastogenesis. In vivo study showed that DHA treatment decreased OC number, prevents bone loss, rescues bone microarchitecture and restores bone strength in LPS-induced bone-loss mouse model. Together, our findings indicate that DHA is protective against LPS-induced bone loss through apoptosis induction of osteoclasts via ROS accumulation and the mitochondria-dependent apoptosis pathway. Therefore, DHA may be considered as a new therapeutic candidate for treating inflammatory bone loss.
Collapse
Affiliation(s)
- C Dou
- Department of Orthopedics, Southwest Hospital, Third Military Medical University, Chongqing 400038, China.,Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing 400038, China
| | - N Ding
- Department of Orthopedics, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
| | - J Xing
- Department of Orthopedics, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
| | - C Zhao
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing 400038, China
| | - F Kang
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing 400038, China
| | - T Hou
- Department of Orthopedics, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
| | - H Quan
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing 400038, China
| | - Y Chen
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing 400038, China
| | - Q Dai
- Department of Orthopedics, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
| | - F Luo
- Department of Orthopedics, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
| | - J Xu
- Department of Orthopedics, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
| | - S Dong
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing 400038, China.,China Orthopedic Regenerative Medicine Group, Chongqing 400038, China
| |
Collapse
|
20
|
Du J, Wang Q, He B, Liu P, Chen JY, Quan H, Ma X. Association of mean platelet volume and platelet count with the development and prognosis of ischemic and hemorrhagic stroke. Int J Lab Hematol 2016; 38:233-9. [PMID: 26992440 DOI: 10.1111/ijlh.12474] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2015] [Accepted: 12/31/2015] [Indexed: 11/30/2022]
Affiliation(s)
- J. Du
- Department of Neurology; The Nuclear Industry 416 Hospital; Chengdu Sichuan China
- Department of Health and Social Behavior; West China School of Public Health, Sichuan University; Chengdu Sichuan China
| | - Q. Wang
- Department of Neurology; The Nuclear Industry 416 Hospital; Chengdu Sichuan China
| | - B. He
- Department of Health and Social Behavior; West China School of Public Health, Sichuan University; Chengdu Sichuan China
| | - P. Liu
- Department of Health and Social Behavior; West China School of Public Health, Sichuan University; Chengdu Sichuan China
| | - J.-Y. Chen
- Department of Health and Social Behavior; West China School of Public Health, Sichuan University; Chengdu Sichuan China
| | - H. Quan
- Department of Neurology; The Nuclear Industry 416 Hospital; Chengdu Sichuan China
| | - X. Ma
- Department of Neurology; The Nuclear Industry 416 Hospital; Chengdu Sichuan China
| |
Collapse
|
21
|
Dou C, Li N, Ding N, Liu C, Yang X, Kang F, Cao Z, Quan H, Hou T, Xu J, Dong S. HDAC2 regulates FoxO1 during RANKL-induced osteoclastogenesis. Am J Physiol Cell Physiol 2016; 310:C780-7. [PMID: 26962001 DOI: 10.1152/ajpcell.00351.2015] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Accepted: 02/23/2016] [Indexed: 11/22/2022]
Abstract
The bone-resorbing osteoclast (OC) is essential for bone homeostasis, yet deregulation of OCs contributes to diseases such as osteoporosis, osteopetrosis, and rheumatoid arthritis. Here we show that histone deacetylase 2 (HDAC2) is a key positive regulator during receptor activator of nuclear factor-κB ligand (RANKL)-induced osteoclastogenesis and bone resorption. Bone marrow macrophages (BMMs) showed increased HDAC2 expression during osteoclastogenesis. HDAC2 overexpression enhanced, whereas HDAC2 deletion suppressed osteoclastogenesis and bone resorption using lentivirus infection. Mechanistically, upon RANKL activation, HDAC2 activated Akt; Akt directly phosphorylates and abrogates Forkhead box protein O1 (FoxO1), which is a negative regulator during osteoclastogenesis through reducing reactive oxygen species. HDAC2 deletion in BMMs resulted in decreased Akt activation and increased FoxO1 activity during osteoclastogenesis. In conclusion, HDAC2 activates Akt thus suppresses FoxO1 transcription results in enhanced osteoclastogenesis. Our data imply the potential value of HDAC2 as a new target in regulating osteoclast differentiation and function.
Collapse
Affiliation(s)
- Ce Dou
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, China; and Department of Orthopedics, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Nan Li
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, China; and
| | - Ning Ding
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, China; and
| | - Chuan Liu
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, China; and
| | - Xiaochao Yang
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, China; and
| | - Fei Kang
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, China; and
| | - Zhen Cao
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, China; and
| | - Hongyu Quan
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, China; and
| | - Tianyong Hou
- Department of Orthopedics, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Jianzhong Xu
- Department of Orthopedics, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Shiwu Dong
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, China; and
| |
Collapse
|
22
|
Lix LM, Kuwornu JP, Kroeker K, Kephart G, Sikdar KC, Smith M, Quan H. Estimating the completeness of physician billing claims for diabetes case ascertainment using population-based prescription drug data. Health Promot Chronic Dis Prev Can 2016. [DOI: 10.24095/hpcdp.36.3.02] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Introduction
Changes in physician reimbursement policies may hinder the collection of
billing claims in administrative data; this can result in biased estimates of disease
prevalence and incidence. However, the magnitude of data loss is largely unknown. The
purpose of this study was to estimate completeness of capture of disease cases for Manitoba
physicians paid by fee-for-service (FFS) and non-fee-for-service (NFFS) methods.
Methods
Manitoba’s administrative data were used to identify a cohort (Z 20 years)
with a new diabetes medication between 1 April, 2007, and 31 March, 2009. Cohort
members were classified by payment method of the prescribing physician (i.e. FFS vs.
NFFS). The cohort was then classified as missing or not missing a diabetes diagnosis
using physician claims and hospital records. Then, w2 statistics were used to test for
differences in the characteristics of the two groups.
Results
The cohort consisted of 12 394 individuals; 86.4% had a prescription for a
diabetes medication from an FFS physician. A total of 1172 physicians (81.8% FFS)
prescribed these medications for the cohort. Cohort members with a prescription from an
FFS physician were older and more likely to reside in the urban Winnipeg health region
than those with a prescription from a NFFS physician. A greater percentage of NFFS
physicians’ cases were missing a diabetes diagnosis (18.7% vs. 14.9% for FFS physicians).
Conclusion
The results suggest minimal loss of physician claims associated with
remuneration policies in Manitoba. This method of assessing data completeness could be
applied to other chronic diseases and jurisdictions to estimate completeness.
Collapse
Affiliation(s)
- L. M. Lix
- Department of Community Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | - J. P. Kuwornu
- Department of Community Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | - K. Kroeker
- Department of Community Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | - G. Kephart
- Department of Community Health and Epidemiology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - K. C. Sikdar
- Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada
| | - M. Smith
- Manitoba Centre for Health Policy, University of Manitoba, Winnipeg, Manitoba, Canada
| | - H. Quan
- Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada
- Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
| |
Collapse
|
23
|
Lix LM, Kuwornu JP, Kroeker K, Kephart G, Sikdar KC, Smith M, Quan H. Estimating the completeness of physician billing claims for diabetes case ascertainment using population-based prescription drug data. Health Promot Chronic Dis Prev Can 2016; 36:54-60. [PMID: 26959724 PMCID: PMC4910418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
INTRODUCTION Changes in physician reimbursement policies may hinder the collection of billing claims in administrative data; this can result in biased estimates of disease prevalence and incidence. However, the magnitude of data loss is largely unknown. The purpose of this study was to estimate completeness of capture of disease cases for Manitoba physicians paid by fee-for-service (FFS) and non-fee-for-service (NFFS) methods. METHODS Manitoba's administrative data were used to identify a cohort (≥ 20 years) with a new diabetes medication between 1 April, 2007, and 31 March, 2009. Cohort members were classified by payment method of the prescribing physician (i.e. FFS vs. NFFS). The cohort was then classified as missing or not missing a diabetes diagnosis using physician claims and hospital records. Then, χ2 statistics were used to test for differences in the characteristics of the two groups. RESULTS The cohort consisted of 12 394 individuals; 86.4% had a prescription for a diabetes medication from an FFS physician. A total of 1172 physicians (81.8% FFS) prescribed these medications for the cohort. Cohort members with a prescription from an FFS physician were older and more likely to reside in the urban Winnipeg health region than those with a prescription from a NFFS physician. A greater percentage of NFFS physicians' cases were missing a diabetes diagnosis (18.7%vs. 14.9% for FFS physicians). CONCLUSION The results suggest minimal loss of physician claims associated with remuneration policies in Manitoba. This method of assessing data completeness could be applied to other chronic diseases and jurisdictions to estimate completeness.
Collapse
Affiliation(s)
- L M Lix
- Department of Community Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | - J P Kuwornu
- Department of Community Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | - K Kroeker
- Department of Community Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | - G Kephart
- Department of Community Health and Epidemiology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - K C Sikdar
- Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada
| | - M Smith
- Manitoba Centre for Health Policy, University of Manitoba, Winnipeg, Manitoba, Canada
| | - H Quan
- Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada
- Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
| |
Collapse
|
24
|
Dou C, Cao Z, Yang B, Ding N, Hou T, Luo F, Kang F, Li J, Yang X, Jiang H, Xiang J, Quan H, Xu J, Dong S. Changing expression profiles of lncRNAs, mRNAs, circRNAs and miRNAs during osteoclastogenesis. Sci Rep 2016; 6:21499. [PMID: 26856880 PMCID: PMC4746671 DOI: 10.1038/srep21499] [Citation(s) in RCA: 130] [Impact Index Per Article: 16.3] [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: 06/29/2015] [Accepted: 01/19/2016] [Indexed: 01/01/2023] Open
Abstract
Bone is a dynamic organ continuously undergoing shaping, repairing and remodeling. The homeostasis of bone is maintained by the balance between osteoblastic bone formation and osteoclastic bone resorption. Osteoclasts (OCs) are specialized multinucleated cells derived from hematopoietic stem cells (HSCs) or monocytes/macrophage progenitor cells. There are different stages during osteoclastogenesis, and one of the most important steps to form functional osteoclasts is realized by cell-cell fusion. In our study, microarray was performed to detect the expression profiles of lncRNA, mRNA, circRNA and miRNA at different stages during osteoclastogenesis of RAW264.7 cells. Often changed RNAs were selected and clustered among the four groups with Venn analysis. The results revealed that expressions of 518 lncRNAs, 207 mRNAs, 24 circRNAs and 37 miRNAs were often altered at each stage during OC differentiation. Gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) biological pathway analysis were performed to predict the functions of differentially expressed lncRNAs and co-expressed potential targeting genes. Co-expression networks of lncRNA-mRNA and circRNA-miRNA were constructed based on the correlation analysis between the differentially expressed RNAs. The present study provided a systematic perspective on the potential function of non-coding RNAs (ncRNAs) during osteoclastogenesis.
Collapse
Affiliation(s)
- Ce Dou
- Department of Orthopedics, Southwest Hospital, Third Military Medical University, Chongqing, China.,Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, China
| | - Zhen Cao
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, China
| | - Bo Yang
- Department of Anatomy, Third Military Medical University, Chongqing, China
| | - Ning Ding
- Department of Anatomy, Third Military Medical University, Chongqing, China
| | - Tianyong Hou
- Department of Orthopedics, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Fei Luo
- Department of Orthopedics, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Fei Kang
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, China
| | - Jianmei Li
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, China
| | - Xiaochao Yang
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, China
| | - Hong Jiang
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, China
| | - Junyu Xiang
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, China
| | - Hongyu Quan
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, China
| | - Jianzhong Xu
- Department of Orthopedics, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Shiwu Dong
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing, China.,China Orthopedic Regenerative Medicine Group (CORMed), Chongqing, China
| |
Collapse
|
25
|
Jolley RJ, Yergens DW, Quan H, Doig CJ. Physician recognition and documentation of sepsis. a comparison of the 2001 accp/sccm consensus conference definitions and physician documented diagnosis. Intensive Care Med Exp 2015. [PMCID: PMC4797780 DOI: 10.1186/2197-425x-3-s1-a224] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
26
|
Yang ZY, Yue Q, Xing HY, Tan QY, Sun HQ, Gong QY, Tan ZJ, Quan H. A quantitative analysis of (1)H-MR spectroscopy at 3.0 T of three brain regions from childhood to middle age. Br J Radiol 2015; 88:20140693. [PMID: 26081448 DOI: 10.1259/bjr.20140693] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
OBJECTIVE To study age-related metabolic changes in different brain regions. METHODS Point-resolved spectroscopy (repetition time/echo time = 2000 ms/30 ms) was performed in the left and right hippocampus, the left thalamus and the left centrum semiovale of 80 healthy subjects (37 females and 43 males aged 7-64 years). Analysis of covariance and linear regression were used for statistical analysis. Both metabolite concentration ratios with respect to total creatine (tCr) and absolute metabolite concentrations were included for analysis. RESULTS Ins (myo-inositol)/tCr (p < 0.001) and absolute Ins concentration (p = 0.031) were significantly increased with age after adolescence. NAA (N-acetylaspartic acid)/tCr (p < 0.001) and absolute NAA concentration (p = 0.010) significantly declined with age after adolescence. CONCLUSION Age-related increase of Ins and decline of NAA are found in all three regions, especially at the hippocampus, indicating possible gliosis in the ageing brain. ADVANCES IN KNOWLEDGE We could use NAA/tCr and Ins/tCr as an indicator to estimate the neurons-to-glial cells ratio at the thalamus. This may be an index to distinguish normal tissues from gliosis.
Collapse
Affiliation(s)
- Z-Y Yang
- 1 Laboratory of Biological & Medical Physics and Key Laboratory of Artificial Micro- & Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan, China.,2 Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Q Yue
- 3 Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, China
| | - H-Y Xing
- 3 Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, China
| | - Q-Y Tan
- 3 Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, China
| | - H-Q Sun
- 3 Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, China
| | - Q-Y Gong
- 3 Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, China
| | - Z-J Tan
- 1 Laboratory of Biological & Medical Physics and Key Laboratory of Artificial Micro- & Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan, China
| | - H Quan
- 1 Laboratory of Biological & Medical Physics and Key Laboratory of Artificial Micro- & Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan, China
| |
Collapse
|
27
|
Sundararajan V, Romano PS, Quan H, Burnand B, Drösler SE, Brien S, Pincus HA, Ghali WA. Capturing diagnosis-timing in ICD-coded hospital data: recommendations from the WHO ICD-11 topic advisory group on quality and safety. Int J Qual Health Care 2015; 27:328-33. [PMID: 26045514 DOI: 10.1093/intqhc/mzv037] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/05/2015] [Indexed: 11/15/2022] Open
Abstract
PURPOSE To develop a consensus opinion regarding capturing diagnosis-timing in coded hospital data. METHODS As part of the World Health Organization International Classification of Diseases-11th Revision initiative, the Quality and Safety Topic Advisory Group is charged with enhancing the capture of quality and patient safety information in morbidity data sets. One such feature is a diagnosis-timing flag. The Group has undertaken a narrative literature review, scanned national experiences focusing on countries currently using timing flags, and held a series of meetings to derive formal recommendations regarding diagnosis-timing reporting. RESULTS The completeness of diagnosis-timing reporting continues to improve with experience and use; studies indicate that it enhances risk-adjustment and may have a substantial impact on hospital performance estimates, especially for conditions/procedures that involve acutely ill patients. However, studies suggest that its reliability varies, is better for surgical than medical patients (kappa in hip fracture patients of 0.7-1.0 versus kappa in pneumonia of 0.2-0.6) and is dependent on coder training and setting. It may allow simpler and more precise specification of quality indicators. CONCLUSIONS As the evidence indicates that a diagnosis-timing flag improves the ability of routinely collected, coded hospital data to support outcomes research and the development of quality and safety indicators, the Group recommends that a classification of 'arising after admission' (yes/no), with permitted designations of 'unknown or clinically undetermined', will facilitate coding while providing flexibility when there is uncertainty. Clear coding standards and guidelines with ongoing coder education will be necessary to ensure reliability of the diagnosis-timing flag.
Collapse
Affiliation(s)
- V Sundararajan
- Department of Medicine, St. Vincent's Hospital, University of Melbourne, Melbourne, Australia
| | - P S Romano
- Departments of Internal Medicine and Pediatrics, and Center for Healthcare Policy and Research, University of California Davis, Davis, CA, USA
| | - H Quan
- Department of Community Health Sciences, University of Calgary, Calgary, Canada
| | - B Burnand
- Institut Universitaire de Médecine Sociale et Préventive, Lausanne University Hospital, Lausanne, Switzerland
| | - S E Drösler
- Faculty of Health Care, Niederrhein University of Applied Sciences, Krefeld, Germany
| | - S Brien
- Health Council of Canada, Toronto, Canada
| | - H A Pincus
- Department of Psychiatry, Division of Clinical Phenomenology, Columbia University College of Physicians and Surgeons, New York, NY, USA
| | - W A Ghali
- Department of Community Health Sciences, University of Calgary, Calgary, Canada Department of Medicine, University of Calgary, Calgary, Canada
| |
Collapse
|
28
|
Zhang L, Quan H, Wang S, Li X, Che X. MiR-183 promotes growth of non-small cell lung cancer cells through FoxO1 inhibition. Tumour Biol 2015; 36:8121-6. [PMID: 25983004 DOI: 10.1007/s13277-015-3550-8] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Accepted: 05/07/2015] [Indexed: 10/23/2022] Open
Abstract
Non-small cell lung cancer (NSCLC) is a prevalent cancer in lung of high incidence. NSCLCs often appear to be fast growing, which renders comprehension of the mechanisms underlying the growth of NSCLC extremely critical. Previous study has addressed a role of microRNA (miR) family member, miR-183, in the regulation of the invasiveness of NSCLC, whereas the role of miR-183 in the growth control of NSCLC is not clear. Here, we analyzed the regulation of FoxO1 by miR-183 in vitro using luciferase-reporter assay. We also analyzed the effects of miR-183 on NSCLC cell growth in vitro using a microculture tetrazolium (MTT) assay and in vivo by visualizing tumor growth using bioluminescence assay. We found that overexpression of miR-183 in NSCLC cells decreased FoxO1 protein levels, whereas inhibition of miR-183 increased FoxO1 protein levels without affecting FoxO1 transcripts. Moreover, miR-183 bound to FoxO1 mRNA to prevent its translation through its 3'untranslated region (UTR). Furthermore, administration of miR-183 suppressed FoxO1 levels in NSCLC, resulting in a significant increase in NSCLC growth in vitro and in vivo, while administration of antisense of miR-183 significantly increased FoxO1 levels in NSCLC resulting in a significant decrease in NSCLC growth. Taken together, our data demonstrate that miR-183/FoxO1 axis may be a novel therapeutic target for regulating the growth of NSCLC.
Collapse
Affiliation(s)
- Liqun Zhang
- Department of Respiratory Diseases, Beijing Military Region General Hospital of PLA, 5 Nanmencang, Dongcheng District, Beijing, 100700, China.
| | - Hongyu Quan
- Battalion 19 of the Department of Biomedical Engineering, Third Military Medical University, Chongqing, 400038, China
| | - Sihai Wang
- Department of Respiratory Diseases, Beijing Military Region General Hospital of PLA, 5 Nanmencang, Dongcheng District, Beijing, 100700, China
| | - XueHui Li
- Department of Respiratory Diseases, Beijing Military Region General Hospital of PLA, 5 Nanmencang, Dongcheng District, Beijing, 100700, China
| | - Xiaoyu Che
- Department of Respiratory Diseases, Beijing Military Region General Hospital of PLA, 5 Nanmencang, Dongcheng District, Beijing, 100700, China
| |
Collapse
|
29
|
Zhao B, Quan H, Ma T, Tian Y, Cai Q, Li H. 4,4'-Diisothiocyanostilbene-2,2'-disulfonic Acid (DIDS) Ameliorates Ischemia-Hypoxia-Induced White Matter Damage in Neonatal Rats through Inhibition of the Voltage-Gated Chloride Channel ClC-2. Int J Mol Sci 2015; 16:10457-69. [PMID: 25961953 PMCID: PMC4463656 DOI: 10.3390/ijms160510457] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2015] [Revised: 04/29/2015] [Accepted: 04/30/2015] [Indexed: 01/11/2023] Open
Abstract
Chronic cerebral hypoperfusion is believed to cause white matter lesions (WMLs), leading to cognitive impairment. Previous studies have shown that inflammation and apoptosis of oligodendrocytes (OLs) are involved in the pathogenesis of WMLs, but effective treatments have not been studied. In this study, 4,4'-diisothiocyanostilbene-2,2'-disulfonic acid (DIDS), a chloride (Cl−) channel blocker, was injected into chronic cerebral ischemia-hypoxia rat models at different time points. Our results showed that DIDS significantly reduced the elevated mRNA levels and protein expression of chloride channel 2 (ClC-2) in neonatal rats induced by ischemia-hypoxia. Meanwhile, DIDS application significantly decreased the concentrations of reactive oxygen species (ROS); and the mRNA levels of inducible nitric oxide synthase (iNOS) and tumor necrosis factor-alpha TNF-α in neonatal rats with hypoxic-ischemic damage. Myelin staining was weaker in neonatal rats with hypoxic-ischemic damage compared to normal controls in corpus callosum and other white matter, which was ameliorated by DIDS. Furthermore, the elevated number of caspase-3 and neural/glial antigen 2 (NG-2) double-labeled positive cells was attenuated by DIDS after ischemia anoxic injury. Administration of DIDS soon after injury alleviated damage to OLs much more effectively in white matter. In conclusion, our study suggests that early application of DIDS after ischemia-hypoxia injury may partially protect developing OLs.
Collapse
Affiliation(s)
- Baixiong Zhao
- Battalion 4 of Cadet Brigade, Third Military Medical University, Chongqing 400038, China.
| | - Hongyu Quan
- Battalion 19 of Bioengineering, Third Military Medical University, Chongqing 400038, China.
| | - Teng Ma
- Battalion 7 of Cadet Brigade, Third Military Medical University, Chongqing 400038, China.
| | - Yanping Tian
- Department of Histology and Embryology, Third Military Medical University, 30# Gaotanyan St, Shapingba District, Chongqing 400038, China.
| | - Qiyan Cai
- Department of Histology and Embryology, Third Military Medical University, 30# Gaotanyan St, Shapingba District, Chongqing 400038, China.
| | - Hongli Li
- Department of Histology and Embryology, Third Military Medical University, 30# Gaotanyan St, Shapingba District, Chongqing 400038, China.
| |
Collapse
|
30
|
Abstract
AIMS Rates of diabetes mellitus in the young have not been quantified on a population level, particularly in South Asian and Chinese populations, which bear high rates of diabetes. We determined the incidence of diabetes (Type 2 diabetes and diabetes using insulin only) and rates of hospitalizations among South Asian, Chinese and White people aged 5-29 years with newly diagnosed diabetes. METHODS People with newly diagnosed diabetes (1997-2006) in British Columbia, Canada were identified using population-based administrative data and pharmacy databases. Age-standardized incidence rates were calculated for people with diabetes prescribed insulin only and those with Type 2 diabetes. They were followed for up to 8 years for all hospitalizations and diabetes-related complications. RESULTS There were 712 South Asians, 498 Chinese and 6176 White people aged 5-29 years with diabetes. Most youth with diabetes had Type 2 diabetes (South Asian 86.4%; Chinese 87.1% and White 61.8%). The incidence of diabetes on insulin only was highest in White people compared with the other groups. The incidence of Type 2 diabetes was highest in South Asians, particularly in 20-29-year-olds, with rates 2.2 times that of White people and 3.1 times that of Chinese people. Hospitalization and diabetes-related complications were uncommon in all groups. CONCLUSION The incidence of Type 2 diabetes is higher than previously estimated among youth and is now surpassing diabetes on insulin only. Significant reductions in Type 2 diabetes screening ages in South Asians need to be considered and prevention efforts are urgently required in childhood and adolescence. Global estimates need to consider the epidemic of Type 2 diabetes in the young.
Collapse
Affiliation(s)
- C Ke
- Department of Medicine, University of British Columbia, Vancouver, Canada
| | | | | | | | | |
Collapse
|
31
|
Adams LY, Koop P, Quan H, Norris C. A population-based comparison of the use of acute healthcare services by older adults with and without mental illness diagnoses. J Psychiatr Ment Health Nurs 2015; 22:39-46. [PMID: 25430792 DOI: 10.1111/jpm.12169] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/22/2014] [Indexed: 11/27/2022]
Abstract
Older adults with mental illness (MI) are a highly vulnerable population and need to be provided healthcare services in a timely and thorough way. Compared with older adults without MI, older adults with MI spend a great deal of time being hospitalized and hence costing millions of dollars because the care they need is often overlooked and/or not provided. While they end up spending too much time in hospital, in the emergency department and getting readmitted to hospital because of their MI, this could have been prevented or lessened if an adequate assessment and treatment regime was done by clinicians who were well informed on the topic of older adults' mental health. Older adults with MI are also more likely to leave hospital for long-term care settings, to die and to have more sickness compared with older adults who do not have MI. Further, they are also more likely to be admitted to hospital on an urgent, unplanned basis. How older adults with MI use acute hospitals is important for psychiatric nurses to know and understand, as they can help to provide the care needed so they do not have to be in hospital for long periods of time. Psychiatric nurses can share much support and information on making sure older adults with MI are accurately care for when needed. To explore and compare predictors of hospital length of stay (LOS), acute LOS (ALOS), emergency room (ER) wait times, rate of readmission (ROR) and costs of inpatient hospital care for older adults with and without mental illness (MI) diagnoses in the province of Newfoundland and Labrador (NL). This descriptive-comparative study used aggregate population level data of 12,283 people aged 65 years and older admitted to an acute care hospital in the province of NL. A total of 8.3% of hospitalized older adults had MI diagnoses. Older adults with MI diagnoses had a significantly longer LOS, ALOS, ROR, ER wait time and costs compared with older adults without MI diagnoses, after controlling for medical co-morbidities. Key variables such as patient demographics, admission indicators, discharge indicators and other medical co-morbidities had differential impacts on observed service use. While only a small percentage of hospitalized older adults had MI diagnoses, the use and cost of acute hospitalizations was significantly greater than that of older adults without MI diagnoses.
Collapse
Affiliation(s)
- L Y Adams
- MacEwan University, Edmonton, AB, Canada
| | | | | | | |
Collapse
|
32
|
Chong E, Wang H, King-Shier KM, Quan H, Rabi DM, Khan NA. Prescribing patterns and adherence to medication among South-Asian, Chinese and white people with type 2 diabetes mellitus: a population-based cohort study. Diabet Med 2014; 31:1586-93. [PMID: 25131338 DOI: 10.1111/dme.12559] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Revised: 04/29/2014] [Accepted: 07/31/2014] [Indexed: 12/27/2022]
Abstract
AIM To determine the prescribing of and adherence to oral hypoglycaemic agents, insulin, angiotensin-converting enzyme inhibitors, angiotensin receptor blockers and statin therapy among South-Asian, Chinese and white people with newly diagnosed diabetes. METHODS The present study was a population-based cohort study using administrative and pharmacy databases to include all South-Asian, Chinese and white people aged ≥ 35 years with diabetes living in British Columbia, Canada (1997-2006). Adherence to each class of medication was measured using proportion of days covered over 1 year with optimum adherence defined as ≥ 80%. RESULTS The study population included 9529 South-Asian, 14 084 Chinese and 143 630 white people with diabetes. The proportion of people who were prescribed angiotensin-converting enzyme inhibitors, angiotensin receptor blockers, statin or oral hypoglycaemic agents was ≤ 50% for all groups. South-Asian and Chinese people had significantly lower adherence for all medications than white people, with the lowest adherence to angiotensin-converting enzyme inhibitor treatment (South-Asian people: adjusted odds ratio 0.37, 95% CI 0.34-0.39; P<0.0001; Chinese people: adjusted odds ratio 0.50, 95% CI 0.47-0.54; P<0.0001) and statin therapy (South-Asian people: adjusted odds ratio 0.47, 95% CI 0.41 - 0.53, P < 0.0001; Chinese people: adjusted odds ratio 0.72, 95% CI 0.67 - 0.77; P<0.0001) compared with white people. CONCLUSION Adherence to evidence-based pharmacotherapy was substantially worse among the South-Asian and Chinese populations. Care providers need to be alerted to the high levels of non-adherence in these groups and the underlying causes need to be investigated.
Collapse
Affiliation(s)
- E Chong
- Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, BC
| | | | | | | | | | | |
Collapse
|
33
|
Jiang C, Li Z, Quan H, Xiao L, Zhao J, Jiang C, Wang Y, Liu J, Gou Y, An S, Huang Y, Yu W, Zhang Y, He W, Yi Y, Chen Y, Wang J. Osteoimmunology in orthodontic tooth movement. Oral Dis 2014; 21:694-704. [PMID: 25040955 DOI: 10.1111/odi.12273] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Revised: 06/18/2014] [Accepted: 06/26/2014] [Indexed: 02/05/2023]
Abstract
The skeletal and immune systems share a multitude of regulatory molecules, including cytokines, receptors, signaling molecules, and signaling transducers, thereby mutually influencing each other. In recent years, several novel insights have been attained that have enhanced our current understanding of the detailed mechanisms of osteoimmunology. In orthodontic tooth movement, immune responses mediated by periodontal tissue under mechanical force induce the generation of inflammatory responses with consequent alveolar bone resorption, and many regulators are involved in this process. In this review, we take a closer look at the cellular/molecular mechanisms and signaling involved in osteoimmunology and at relevant research progress in the context of the field of orthodontic tooth movement.
Collapse
Affiliation(s)
- C Jiang
- State Key Laboratory of Oral Diseases, Sichuan University, Chengdu, Sichuan, China.,Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Z Li
- State Key Laboratory of Oral Diseases, Sichuan University, Chengdu, Sichuan, China.,Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - H Quan
- Qingdao First Sanatorium of Jinan Military Distract of PLA, Qingdao, Shandong, China
| | - L Xiao
- State Key Laboratory of Oral Diseases, Sichuan University, Chengdu, Sichuan, China.,Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - J Zhao
- State Key Laboratory of Oral Diseases, Sichuan University, Chengdu, Sichuan, China.,Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - C Jiang
- Department of Prosthodontics, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Y Wang
- State Key Laboratory of Oral Diseases, Sichuan University, Chengdu, Sichuan, China.,Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - J Liu
- Laboratory of Stem Cell Biology, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Y Gou
- State Key Laboratory of Oral Diseases, Sichuan University, Chengdu, Sichuan, China.,Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - S An
- State Key Laboratory of Oral Diseases, Sichuan University, Chengdu, Sichuan, China.,Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Y Huang
- State Key Laboratory of Oral Diseases, Sichuan University, Chengdu, Sichuan, China.,Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - W Yu
- State Key Laboratory of Oral Diseases, Sichuan University, Chengdu, Sichuan, China.,Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Y Zhang
- State Key Laboratory of Oral Diseases, Sichuan University, Chengdu, Sichuan, China.,Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - W He
- State Key Laboratory of Oral Diseases, Sichuan University, Chengdu, Sichuan, China.,Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Y Yi
- State Key Laboratory of Oral Diseases, Sichuan University, Chengdu, Sichuan, China.,Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Y Chen
- State Key Laboratory of Oral Diseases, Sichuan University, Chengdu, Sichuan, China.,Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - J Wang
- State Key Laboratory of Oral Diseases, Sichuan University, Chengdu, Sichuan, China.,Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| |
Collapse
|
34
|
Mei Q, Li F, Quan H, Liu Y, Xu H. Busulfan inhibits growth of human osteosarcoma through miR-200 family microRNAs in vitro and in vivo. Cancer Sci 2014; 105:755-62. [PMID: 24815002 PMCID: PMC4317920 DOI: 10.1111/cas.12436] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Revised: 04/03/2014] [Accepted: 04/29/2014] [Indexed: 02/01/2023] Open
Abstract
Osteosarcoma typically arises in tissues of mesenchymal origin, and is the most malignant bone tumor characterized by high local aggressiveness, with poor therapeutic outcome. Busulfan has been widely used to treat CML. So far, there are no reports on the therapeutic effect of busulfan on osteosarcoma. Here, we showed that busulfan dose-dependently reduced the cell viability and proliferation, and induced cell apoptosis, senescence, and reactive oxygen species levels in two osteosarcoma cell lines. Moreover, a series of loss-of-function and gain-of-function experiments further indicated that busulfan may have its anti-osteosarcoma effect by upregulating the microRNA-200 (miR-200) family which subsequently downregulated its target genes ZEB1 and ZEB2. Furthermore, treatment with busulfan potentially inhibited the growth of implanted osteosarcoma in nude mice. Taken together, our data suggest that busulfan may have an anti-osteosarcoma effect through downregulating ZEB1 and ZEB2 through activating the miR-200 family, highlighting a possibility of using busulfan as a novel therapy for osteosarcoma.
Collapse
Affiliation(s)
- Qiang Mei
- 169th Hospital, School of Medicine, Hunan Normal University, Changsha, China
| | | | | | | | | |
Collapse
|
35
|
Quan H, Moskal L, Forster AJ, Brien S, Walker R, Romano PS, Sundararajan V, Burnand B, Henriksson G, Steinum O, Droesler S, Pincus HA, Ghali WA. International variation in the definition of 'main condition' in ICD-coded health data. Int J Qual Health Care 2014; 26:511-5. [PMID: 24990594 DOI: 10.1093/intqhc/mzu064] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Hospital-based medical records are abstracted to create International Classification of Disease (ICD) coded discharge health data in many countries. The 'main condition' is not defined in a consistent manner internationally. Some countries employ a 'reason for admission' rule as the basis for the main condition, while other countries employ a 'resource use' rule. A few countries have recently transitioned from one of these approaches to the other. The definition of 'main condition' in such ICD data matters when it is used to define a disease cohort to assign diagnosis-related groups and to perform risk adjustment. We propose a method of harmonizing the international definition to enable researchers and international organizations using ICD-coded health data to aggregate or compare hospital care and outcomes across countries in a consistent manner. Inter-observer reliability of alternative harmonization approaches should be evaluated before finalizing the definition and adopting it worldwide.
Collapse
Affiliation(s)
- H Quan
- Department of Community Health Sciences, University of Calgary, Calgary, Canada
| | - L Moskal
- Canadian Institute for Health Information, Ottawa, Canada
| | - A J Forster
- Ottawa Hospital Research Institute and Institute for Clinical Evaluative Sciences, Ottawa, Canada
| | - S Brien
- Health Council of Canada, Toronto, Canada
| | - R Walker
- Department of Community Health Sciences, University of Calgary, Calgary, Canada
| | - P S Romano
- Departments of Internal Medicine and Pediatrics, and Center for Healthcare Policy and Research, University of California Davis, Davis, USA
| | - V Sundararajan
- Department of Medicine, St. Vincent's Hospital, University of Melbourne, Melbourne, Australia Department of Medicine, Southern Clinical School, Monash University, Melbourne, Australia
| | - B Burnand
- Institut Universitaire de Médecine Sociale et Préventive, Centre, Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - G Henriksson
- Nordic WHO FIC Collaborating Centre, Oslo, Norway
| | - O Steinum
- Nordic WHO FIC Collaborating Centre, Oslo, Norway
| | - S Droesler
- Faculty of Industrial Engineering and Health Care, Niederrhein University of Applied Sciences, Reinarzstrasse 49, Krefeld, Germany
| | - H A Pincus
- Department of Psychiatry, Columbia University College of Physicians and Surgeons, Division of Clinical Phenomenology, New York, NY, USA
| | - W A Ghali
- Department of Community Health Sciences, University of Calgary, Calgary, Canada Department of Medicine, University of Calgary, Calgary, Canada
| |
Collapse
|
36
|
Quan H, Ma T, Zhao X, Zhao B, Liu Y, Li H. Vinyl chloride monomer (VCM) induces high occurrence of neural tube defects in embryonic mouse brain during neurulation. Cell Mol Neurobiol 2014; 34:619-30. [PMID: 24664314 DOI: 10.1007/s10571-014-0049-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Accepted: 03/12/2014] [Indexed: 01/03/2023]
Abstract
The aim of this study was to explore the direct embryonic teratogenicity of vinyl chloride monomer (VCM), especially the toxic effects on the early development of the nervous system and its underlying mechanisms. Pregnant mice at embryonic day 6.5 (E6.5) were injected with different doses of VCM (200, 400 and 600 mg/kg) and embryos were harvested at E10.5. Our results showed that doses higher than 400 mg/kg of VCM increased the incidence of malformed embryos, especially the neural tube defects (NTDs). In addition, high-dose of VCM decreased mitotic figure counts in the neuroepithelium and enhanced the percentage of cells in G0/G1 phase, while they were reduced in S phase. The more VCM was injected into mice, the fewer positive PCNA cells were seen and the more positive TUNEL cells were observed in the neuroepithelium. Moreover, significant increases in the levels of caspase-3 protein were observed in NTD embryos. Our results demonstrate that during early pregnancy, exposure to doses higher than 400 mg/kg of VCM increases the incidence of malformations and particularly the rate of NTDs. High-dose of VCM inhibits the proliferation of neural cells and induces cell apoptosis, leading to an imbalance in the ratio of proliferation and apoptosis. Meanwhile, the apoptosis of neuroepithelial cells might be accelerated by the activation of the caspase-3 pathway, and it might be a reason for NTDs.
Collapse
Affiliation(s)
- Hongyu Quan
- Department of Histology and Embryology, Third Military Medical University, Gaotanyan St 30#, Shapingba District, Chongqing, 400038, People's Republic of China
| | | | | | | | | | | |
Collapse
|
37
|
Quan H, Wu X, Tian Y, Wang Y, Li C, Li H. Overexpression of CDK5 in Neural Stem Cells Facilitates Maturation of Embryonic Neurocytes Derived from Rats In Vitro. Cell Biochem Biophys 2014; 69:445-53. [DOI: 10.1007/s12013-014-9816-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
38
|
Ghali WA, Pincus HA, Southern DA, Brien SE, Romano PS, Burnand B, Drosler SE, Sundararajan V, Moskal L, Forster AJ, Gurevich Y, Quan H, Colin C, Munier WB, Harrison J, Spaeth-Rublee B, Kostanjsek N, Ustun TB. ICD-11 for quality and safety: overview of the who quality and safety topic advisory group. Int J Qual Health Care 2013; 25:621-5. [DOI: 10.1093/intqhc/mzt074] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
39
|
Martin B, Southern D, Quan H, Hauer T, Knudtson M, Arena R, STone J, Aggarwal S. 200 South Asian Ethnicity is Associated With Reduced Rates of Referral to Cardiac Rehabilitation. Can J Cardiol 2012. [DOI: 10.1016/j.cjca.2012.07.198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
|
40
|
Abstract
Introduction
Physician services databases (PSDs) are a valuable resource for research and surveillance in Canada. However, because the provinces and territories collect and maintain separate databases, data elements are not standardized. This study compared major features of PSDs.
Methods
The primary source was a survey of key informants that collected information about years of data, patient/provider characteristics, database inclusions/exclusions, coding of diagnoses, procedures and service locations. Data from the Canadian Institute for Health Information's (CIHI) National Physician Database were used to examine physician remuneration methods, which may affect PSD completeness. Survey data were obtained for nine provinces and two territories.
Results
Most databases contained post-1990 records. Diagnoses were frequently recorded using ICD-9 codes. Other coding systems differed across jurisdictions and time, although all PSDs identified in-hospital services and distinguished family medicine from other specialties. Capture of non-fee-for-service records varied and CIHI data revealed an increasing proportion of non-fee-for-service physicians over time.
Conclusion
Further research is needed to investigate the potential effects of PSD differences on comparability of findings from pan-Canadian studies.
Collapse
Affiliation(s)
- L.M. Lix
- School of Public Health, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - R. Walker
- Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
| | - H. Quan
- Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
| | - R. Nesdole
- School of Public Health, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - J. Yang
- Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - G. Chen
- Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
| | | |
Collapse
|
41
|
Lix LM, Walker R, Quan H, Nesdole R, Yang J, Chen G. Features of physician services databases in Canada. Chronic Dis Inj Can 2012; 32:186-193. [PMID: 23046800] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
INTRODUCTION Physician services databases (PSDs) are a valuable resource for research and surveillance in Canada. However, because the provinces and territories collect and maintain separate databases, data elements are not standardized. This study compared major features of PSDs. METHODS The primary source was a survey of key informants that collected information about years of data, patient/provider characteristics, database inclusions/exclusions, coding of diagnoses, procedures and service locations. Data from the Canadian Institute for Health Information's (CIHI) National Physician Database were used to examine physician remuneration methods, which may affect PSD completeness. Survey data were obtained for nine provinces and two territories. RESULTS Most databases contained post-1990 records. Diagnoses were frequently recorded using ICD-9 codes. Other coding systems differed across jurisdictions and time, although all PSDs identified in-hospital services and distinguished family medicine from other specialties. Capture of non-fee-for-service records varied and CIHI data revealed an increasing proportion of non-fee-for-service physicians over time. CONCLUSION Further research is needed to investigate the potential effects of PSD differences on comparability of findings from pan-Canadian studies.
Collapse
Affiliation(s)
- L M Lix
- School of Public Health, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.
| | | | | | | | | | | |
Collapse
|
42
|
Martin B, Norris C, SoUthern D, Quan H, Ali I, Bainey K. 095 The Association Between South Asian Ethnicity and Long-Term Survival Among Patients Undergoing Coronary Artery Bypass Grafting. Can J Cardiol 2012. [DOI: 10.1016/j.cjca.2012.07.104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
43
|
Eastwood C, Patel A, King-Shier K, Quan H. 637 30-day Readmission Rates For Heart Failure in Alberta: 2002-2010. Can J Cardiol 2012. [DOI: 10.1016/j.cjca.2012.07.573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
|
44
|
Jette N, Quan H, Tellez-Zenteno JF, Macrodimitris S, Hader WJ, Sherman EMS, Hamiwka LD, Wirrell EC, Burneo JG, Metcalfe A, Faris PD, Hernandez-Ronquillo L, Kwon CS, Kirk A, Wiebe S. Development of an online tool to determine appropriateness for an epilepsy surgery evaluation. Neurology 2012; 79:1084-93. [DOI: 10.1212/wnl.0b013e3182698c4c] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
45
|
King-Shier KM, Quan H, Mather C, Verhoef MJ, Knutson ML, Ghali WA. Understanding coronary artery disease patients' decisions regarding the use of chelation therapy for coronary artery disease: descriptive decision modeling. Int J Nurs Stud 2012; 49:1074-83. [PMID: 22534492 DOI: 10.1016/j.ijnurstu.2012.03.011] [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] [Received: 10/06/2011] [Revised: 03/19/2012] [Accepted: 03/30/2012] [Indexed: 11/26/2022]
Abstract
BACKGROUND A considerable number of patients receive chelation therapy to treat their coronary artery disease. However, there is no current empirical evidence to support its use. AIM To better understand patient's decision-making processes regarding the use of chelation therapy as a treatment for coronary artery disease. METHODS Based on qualitative interviews with 32 coronary artery disease patients, a taxonomy of decision-related issues, hierarchical decision-model, and survey based on the model were developed. The model was then pilot tested with another group of 30 patients and revised accordingly. The final model was tested with another group of 167 patients (27 current users, 72 previous users, and 68 never users of chelation therapy). The primary examination of the model was to determine the degree to which it successfully identified people who fell within each behavioral group. This was done by dividing the total number of successes by the total number of cases on all paths (or questions in the questionnaire). RESULTS The most important elements in the decision to use or not use chelation therapy were: previous experience with or learning about chelation therapy, openness to alternative treatments, satisfaction with current level of (traditional) care, physician opinion regarding chelation therapy, costs associated with chelation therapy, perceived access to chelation therapy provider, current state of health (good or bad), and wanting to do 'all one can' for heart health. When tested, the ability of the model to predict the appropriate outcome was nearly 93%. The most salient junctures in the model that led participants to different behavioral outcomes were: considering using non-traditional treatments; perceptions regarding potential risks and benefits; cost; and believing that using chelation therapy was 'doing all that they can' to help their heart health. CONCLUSIONS Descriptive decision-modeling is a useful method to depict cardiac patients' decision-making concerning the use of chelation therapy. It can also assist healthcare providers and policy makers in directing interventions and policy aimed at enhancing the use of evidence-based therapies for cardiac patients.
Collapse
|
46
|
Januel JM, Couris CM, Luthi JC, Halfon P, Trombert-Paviot B, Quan H, Drosler S, Sundararajan V, Pradat E, Touzet S, Wen E, Shepheard J, Webster G, Romano P, So L, Moskal L, Tournay-Lewis L, Sundaresan L, Kelley E, Klazinga N, Ghali W, Colin C, Burnand B. Adaptation au codage CIM-10 de 15 indicateurs de la sécurité des patients proposés par l’Agence étasunienne pour la recherche et la qualité des soins de santé (AHRQ). Rev Epidemiol Sante Publique 2011; 59:341-50. [DOI: 10.1016/j.respe.2011.04.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2009] [Revised: 02/10/2011] [Accepted: 04/01/2011] [Indexed: 10/17/2022] Open
|
47
|
Han LY, Wu QH, Jiao ML, Hao YH, Liang LB, Gao LJ, Legge DG, Quan H, Zhao MM, Ning N, Kang Z, Sun H. Associations between single-nucleotide polymorphisms (+45T>G, +276G>T, -11377C>G, -11391G>A) of adiponectin gene and type 2 diabetes mellitus: a systematic review and meta-analysis. Diabetologia 2011; 54:2303-14. [PMID: 21638131 DOI: 10.1007/s00125-011-2202-9] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [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: 12/21/2010] [Accepted: 04/27/2011] [Indexed: 02/07/2023]
Abstract
AIMS/HYPOTHESIS The associations between adiponectin polymorphisms and type 2 diabetes have been studied widely; however, results are inconsistent. METHODS We searched electronic literature databases and reference lists of relevant articles. A fixed or random effects model was used on the basis of heterogeneity. Sub-group and meta-regression analyses were conducted to explore the sources of heterogeneity. RESULTS There were no statistically significant associations between +45T>G (rs2241766), +276G>T (rs1501299), -11391G>A (rs17300539) and type 2 diabetes risk. However, for -11377C>G (rs266729), the pooled OR (95% CI) for G vs C allele was 1.07 (1.03-1.11, p = 0.001). Subgroup analysis by study design revealed that -11377C>G (rs266729) dominant model (CG+GG vs CC, p = 0.0008) and G vs C allele (p = 0.0004) might be associated with type 2 diabetes risk in population-based case-control studies. After stratification by ethnicity, we found that -11377C>G (rs266729) dominant model (CG+GG vs CC, p = 0.004) and G vs C allele (p = 0.001) might be associated with type 2 diabetes risk in white individuals. In individuals with a family history of diabetes, the presence of -11391G>A (rs17300539) dominant model (GA+AA vs GG) and A vs G allele might be associated with increased risk of type 2 diabetes. CONCLUSIONS/INTERPRETATION The presence of +45T>G (rs2241766), +276G>T (rs1501299) and -11391G>A (rs17300539) do not appear to influence the development of type 2 diabetes. However, G vs C allele of -11377C>G (rs266729) might be a risk factor for type 2 diabetes.
Collapse
Affiliation(s)
- L Y Han
- Department of Social Medicine, School of Public Health, Harbin Medical University, 157 Baojian Road, Harbin, Heilongjiang 150081, People's Republic of China
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
48
|
Abstract
BACKGROUND The goal of our study was to compare the incidence of motor vehicle accidents (MVA), attempted or completed suicides, and injuries inflicted by others between individuals with and without epilepsy. METHODS Individuals with and without epilepsy were identified using linked administrative databases between 1996 and 2003 in a Canadian health region with a 1.4 million population. We used a validated epilepsy case definition: anyone who had 2 physician claims, one hospitalization, or one emergency room visit coded with an International Classification of Diseases (ICD)-9-CM or ICD-10 epilepsy code any time during a 2-year period. Four subjects without epilepsy were matched to one patient with epilepsy by age (within 1 year) and sex. The incidence of MVAs, attempted or completed suicides, and inflicted injuries was assessed in 2003-2004. Outcomes were adjusted using the Elixhauser comorbidity index. RESULTS A total of 10,240 individuals with epilepsy and 40,960 individuals without epilepsy were identified. Mean age was 39.0 ± 21.3 years (range 0.12-99.4) and 48.5% were female. One-year odds ratios before and after adjustment for comorbidity were 1.83 (95% confidence interval [CI] 1.33-2.54) and 1.38 (95% CI 0.97-1.96) for MVAs, 4.32 (95% CI 2.79-6.69) and 1.32 (95% CI 0.81-2.15) for attempted or completed suicides, and 3.54 (95% CI 2.66-4.72) and 1.46 (95% CI 1.04-2.03) for injuries inflicted by others. CONCLUSION In this cohort-controlled population-based study, once important medical and psychiatric comorbidities were adjusted for, people with epilepsy were not more likely to attempt suicide or experience MVAs, but were still more likely to be assaulted compared to those without epilepsy.
Collapse
Affiliation(s)
- C Kwon
- Division of Neurology, Foothills Medical Centre, Calgary, Alberta, Canada
| | | | | | | | | | | |
Collapse
|
49
|
Quan H, Shu Q, Kanghua M, Suxin L, Xiaogang Z. e0044 The role of Ang1 and eNOS in the proangiogenic effect of simvastatin after myocardial infarction in rats. Heart 2010. [DOI: 10.1136/hrt.2010.208967.44] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
50
|
Quan H, Shu Q, Kanghua M, Suxin L, Xiaogang Z. e0043 Effects of simvastatin on angiogenesis and the expression of Ang1 after myocardial infarction in rats. Heart 2010. [DOI: 10.1136/hrt.2010.208967.43] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|