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Ma M, Quan H, Chen S, Fu X, Zang L, Dong L. The Anxiolytic Effect of Polysaccharides from Stellariae Radix through Monoamine Neurotransmitters, HPA Axis, and ECS/ERK/CREB/BDNF Signaling Pathway in Stress-induced Male Rats. Brain Res Bull 2023; 203:110768. [PMID: 37739234 DOI: 10.1016/j.brainresbull.2023.110768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 09/05/2023] [Accepted: 09/20/2023] [Indexed: 09/24/2023]
Abstract
BACKGROUND Stellaria dichotoma L. var. lanceolata Bge. is renowned for its efficacy in "clearing deficiency heat" and represents a significant traditional Chinese medicine (TCM) resource. Modern pharmacology has demonstrated the anti-anxiety effects of Stellaria dichotoma L. var. lanceolata Bge. polysaccharides (SDPs). SDPs are one of the active constituents of Stellaria dichotoma L. var. lanceolata Bge. This study presents the first extraction of SDPs and investigates their potential molecular mechanisms and anxiolytic effects that are not previously reported. METHODS First, SDPs were obtained by water extraction and alcohol precipitation and analyzed for their monosaccharide composition by high performance liquid chromatography (HPLC). Male SD rats were subjected to a two-week indeterminate empty bottle stress procedure and a three-day acute restraint stress procedure, during which diazepam (DZP) (1 mg/kg) and SDPs (50, 100 and 200 mg/kg, intragastrically) were administered. A number of behavioral tests, including the elevated plus maze test (EPM), the open field test (OFT) and the light/dark box test (LDB), were used to assess the anti-anxiety potential of SDPs. Serum levels of Corticosterone (CORT) and Adrenocorticotropic hormone (ACTH), as well as the levels of Dopamine (DA) and serotonin (5-HT) found in the hippocampus and frontal cortex, were quantified using commercially available enzyme-linked immunosorbent assay (ELISA) kits. In addition, protein levels of key proteins cAMP-response element binding protein (CREB), phospho-CREB (p-CREB), brain-derived neurotrophic factor (BDNF), ERK½, p-ERK½, and GAPDH expression in rat hippocampus were measured by Western blot analysis, and modulation of the endocannabinoid system was assessed by immunohistochemistry. RESULTS Following administration of SDPs (50, 100, 200 mg/kg) and diazepam 1 mg/kg, anxiolytic activity was exhibited through an increase in the percentage of arm opening times and arm opening time of rats in the elevated plus maze. Additionally, there was an increase in the number of times and time spent in the open field center, percentage of time spent in the open box, and shuttle times in the LDB. Furthermore, tissue levels of DA and 5-HT were increased in the hippocampus and frontal cortex of rats after treatment with SDPs. In addition, SDPs significantly decreased serum levels of CORT and ACTH in rats. SDPs also effectively regulated the phosphorylation of the extracellular regulated protein kinases (ERK) and CREB-BDNF pathway in the hippocampus. Moreover, the expression levels of CB1 and CB2 proteins were heightened due to SDPs treatment in rats. CONCLUSIONS The study verified that SDPs alleviate anxiety in the EBS and ARS. The neuroregulatory behavior is accomplished by regulating the Monoamine neurotransmitter, HPA axis, and ECB-ERK-CREB-BDNF signaling pathway.
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Affiliation(s)
- Miao Ma
- School of Pharmacy, Ningxia Medical University, Yinchuan 750004, China
| | - Hongfeng Quan
- School of Pharmacy, Ningxia Medical University, Yinchuan 750004, China
| | - Shujuan Chen
- School of Pharmacy, Ningxia Medical University, Yinchuan 750004, China
| | - Xueyan Fu
- School of Pharmacy, Ningxia Medical University, Yinchuan 750004, China; Ningxia Collaborative Innovation Center of Regional Characteristic Traditional Chinese Medicine, Yinchuan 750004, China; Key Laboratory of Hui Ethnic Medicine Modernization, Ministry of Education (Ningxia Medical University), Yinchuan 750004, China
| | - Lingling Zang
- Hainan Health Vocational College, Haikou 813099, China
| | - Lin Dong
- School of Pharmacy, Ningxia Medical University, Yinchuan 750004, China; Ningxia Collaborative Innovation Center of Regional Characteristic Traditional Chinese Medicine, Yinchuan 750004, China; Key Laboratory of Hui Ethnic Medicine Modernization, Ministry of Education (Ningxia Medical University), Yinchuan 750004, China.
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Qi P, Li P, Qiao L, Xue H, Ma Y, Wei S, Yang X, Zhang H, Zhang Y, Wang Y, He S, Quan H, Zhang W. Simultaneous quantification of pirarubicin, doxorubicin, cyclophosphamide, and vincristine in human plasma of patients with non-Hodgkin's lymphoma by LC-MS/MS method. J Chromatogr B Analyt Technol Biomed Life Sci 2023; 1224:123754. [PMID: 37229818 DOI: 10.1016/j.jchromb.2023.123754] [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: 02/20/2023] [Revised: 05/05/2023] [Accepted: 05/11/2023] [Indexed: 05/27/2023]
Abstract
Pirarubicin (THP), doxorubicin (DOX), cyclophosphamide (CTX), and vincristine (VCR) are widely used in the treatment of patients with non-Hodgkin's Lymphoma. Herein, a precise and sensitive method was developed for the determination of THP, DOX, CTX and VCR in human plasma by high-performance liquid-chromatography-tandem mass spectrometry (LC-MS/MS). Liquid-liquid extraction was applied to extract THP, DOX, CTX, VCR, and the internal standard (IS, Pioglitazone) in plasma. Agilent Eclipse XDB-C18 (3.0 mm × 100 mm) was utilized and chromatographic separation was obtained in eight minutes. Mobile phases were composed of methanol and buffer (10 mM ammonium formate containing 0.1% formic acid). The method was linear within the concentration range of 1-500 ng/mL for THP, 2-1000 ng/mL for DOX, 2.5-1250 ng/mL for CTX, and 3-1500 ng/mL for VCR. The intra- and inter-day precisions of QC samples were found to be below 9.31 and 13.66%, and accuracy ranged from -0.2 to 9.07%, respectively. THP, DOX, CTX, VCR and the internal standard were stable in several conditions. Finally, this method was successfully utilized to simultaneously determine THP, DOX, CTX and VCR in human plasma of 15 patients with non-Hodgkin's Lymphoma after intravenous administration. Finally, the method was successfully employed in the clinical determination of THP, DOX, CTX, and VCR in patients with non-Hodgkin lymphoma after administration of RCHOP (rituximab plus cyclophosphamide, doxorubicin, vincristine, and prednisone) regimens.
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Affiliation(s)
- Peng Qi
- Institute of Clinical Pharmacology, Department of Pharmacy, General Hospital of Ningxia Medical University, Ningxia, China; Ningxia Medical University School of Pharmacy, Ningxia, China.
| | - Ping Li
- Cancer Hospital, General Hospital of Ningxia Medical University, Ningxia, China.
| | - Lijiao Qiao
- Cancer Hospital, General Hospital of Ningxia Medical University, Ningxia, China
| | - Huaqian Xue
- Institute of Clinical Pharmacology, Department of Pharmacy, General Hospital of Ningxia Medical University, Ningxia, China; Ningxia Medical University School of Pharmacy, Ningxia, China
| | - Yanni Ma
- Institute of Clinical Pharmacology, Department of Pharmacy, General Hospital of Ningxia Medical University, Ningxia, China
| | - Shijie Wei
- Institute of Clinical Pharmacology, Department of Pharmacy, General Hospital of Ningxia Medical University, Ningxia, China
| | - Xiaoying Yang
- Institute of Clinical Pharmacology, Department of Pharmacy, General Hospital of Ningxia Medical University, Ningxia, China
| | - Hao Zhang
- Institute of Clinical Pharmacology, Department of Pharmacy, General Hospital of Ningxia Medical University, Ningxia, China
| | - Yuxin Zhang
- Institute of Clinical Pharmacology, Department of Pharmacy, General Hospital of Ningxia Medical University, Ningxia, China
| | - Yifan Wang
- Institute of Clinical Pharmacology, Department of Pharmacy, General Hospital of Ningxia Medical University, Ningxia, China; Ningxia Medical University School of Pharmacy, Ningxia, China
| | - Shaolong He
- Institute of Clinical Pharmacology, Department of Pharmacy, General Hospital of Ningxia Medical University, Ningxia, China
| | - Hongfeng Quan
- Ningxia Medical University School of Pharmacy, Ningxia, China
| | - Wenping Zhang
- Institute of Clinical Pharmacology, Department of Pharmacy, General Hospital of Ningxia Medical University, Ningxia, China.
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Zhou X, Quan H, Zang L, Dong L. Dichotomine B Attenuates Neuroinflammatory Responses by Regulating TLR4/MyD88-mTOR Signaling Pathway in BV2 Cells. Neurochem Res 2023:10.1007/s11064-023-03920-0. [PMID: 37010732 DOI: 10.1007/s11064-023-03920-0] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 02/16/2023] [Accepted: 03/23/2023] [Indexed: 04/04/2023]
Abstract
Dichotomine B is a [Formula: see text]-Carboline alkaloid isolated from Stellariae Radix. Stellariae Radix, also known as Yin Chai Hu, is a common Chinese medicine in clinical practice. This herb has been demonstrated to have anti-inflammatory activity. This study aimed to investigate the effects and mechanisms of Dichotomine B on neuroinflammation by BV2 microglia induced by lipopolysaccharide (LPS) and adenosine triphosphate (ATP). The experiment was divided into a control group, a model group (10 µg/mL LPS + 5 mM ATP), a model+ TLR4 inhibitor (TAK-242, 10 µmol/L) group, model+ Dichotomine B (20, 40 and 80 µmol/L) groups and Dichotomine B (80 µmol/L) group. The BV2 cell viability was detected by MTT assay, the morphology of BV2 cells was observed by inverted microscope, and the levels of IL-6, IL-1[Formula: see text] and TNF-[Formula: see text] in BV2 cells were determined by ELISA. The expression levels of TLR4, MyD88, p-mTOR/mTOR, p62, p-RPS6/RPS6, LC3II/LC3I and Beclin-1 proteins were detected by western blot assay. The expression levels of TLR4, MyD88, mTOR, p62, RPS6, LC3B and Beclin-1 mRNA were detected by PCR assay. Finally, molecular docking was performed to predict the affinity of Dichotomine B with TLR4, MyD88 and mTOR by LibDock of Discovery Studio and MOE. The results showed that compared with the model group, the survival rates of damaged cells were significantly increased by TAK-242 and Dichotomine B, and the morphology of these BV2 cells improved. The levels of IL-6, IL-1[Formula: see text] and TNF-[Formula: see text] were significantly decreased by TAK-242 and Dichotomine B in LPS/ATP-induced BV2 cells. 80 µmol/L Dichotomine B has no effect on normal BV2 cells. Further mechanism investigation showed that TAK-242 and Dichotomine B significantly inhibited the protein and mRNA expression levels of TLR4, MyD88, p-mTOR/mTOR (mTOR), p62, p-RPS6/RPS6 (RPS6) and increased the protein and mRNA expression levels of LC3II/LC3I (LC3B), Beclin-1. Docking study showed the LibDock scores of Dichotomine B with TLR4, MyD88 and mTOR were all higher than those of positive drugs (Diazepam). These findings indicated that Dichotomine B attenuated neuroinflammatory responses in LPS/ATP-induced BV2 microglia, and its mechanism may be related to TLR4/MyD88-mTOR signaling pathway and autophagy.
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Affiliation(s)
- Xirong Zhou
- School of Pharmacy, Ningxia Medical University, Yinchuan, 750004, China
| | - Hongfeng Quan
- School of Pharmacy, Ningxia Medical University, Yinchuan, 750004, China
| | - Lingling Zang
- Hainan Health Vocational College, Haikou, 813099, China
| | - Lin Dong
- School of Pharmacy, Ningxia Medical University, Yinchuan, 750004, China.
- Ningxia Collaborative Innovation Center of Regional Characteristic Traditional Chinese Medicine, Yinchuan, 750004, China.
- Key Laboratory of Hui Ethnic Medicine Modernization, Ministry of Education (Ningxia Medical University), Yinchuan, 750004, China.
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Chen S, Dong L, Quan H, Zhou X, Ma J, Xia W, Zhou H, Fu X. A review of the ethnobotanical value, phytochemistry, pharmacology, toxicity and quality control of Tussilago farfara L. (coltsfoot). J Ethnopharmacol 2021; 267:113478. [PMID: 33069788 PMCID: PMC7561605 DOI: 10.1016/j.jep.2020.113478] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 10/02/2020] [Accepted: 10/13/2020] [Indexed: 05/04/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Tussilago farfara L. (commonly called coltsfoot), known as a vital folk medicine, have long been used to treat various respiratory disorders and consumed as a vegetable in many parts of the world since ancient times. AIM OF THE REVIEW This review aims to provide a critical evaluation of the current knowledge on the ethnobotanical value, phytochemistry, pharmacology, toxicity and quality control of coltsfoot, thus provide a basis for further investigations. MATERIALS AND METHODS A detailed literature search was obtained using various online search engines (e.g. Google Scholar, Web of Science, Science Direct, Baidu Scholar, PubMed and CNKI). Additional information was sourced from ethnobotanical literature focusing on Chinese and European flora. The plant synonyms were validated by the database 'The Plant List' (www.theplantlist.org). RESULTS Coltsfoot has diverse uses in local and traditional medicine, but similarities have been noticed, specifically for relieving inflammatory conditions, respiratory and infectious diseases in humans. Regarding its pharmacological activities, many traditional uses of coltsfoot are supported by modern in vitro or in vivo pharmacological studies such as anti-inflammatory activities, neuro-protective activity, anti-diabetic, anti-oxidant activity. Quantitative analysis (e.g. GC-MS, UHPLC-MRMHR) indicated the presence of a rich (>150) pool of chemicals, including sesquiterpenes, phenolic acids, flavonoids, chromones, pyrrolizidine alkaloids (PAs) and others from its leaves and buds. In addition, adverse events have resulted from a collection of the wrong plant which contains PAs that became the subject of public concern attributed to their highly toxic. CONCLUSIONS So far, remarkable progress has been witnessed in phytochemistry and pharmacology of coltsfoot. Thus, some traditional uses have been well supported and clarified by modern pharmacological studies. Discovery of therapeutic natural products and novel structures in plants for future clinical and experimental studies are still a growing interest. Furthermore, well-designed studies in vitro particularly in vivo are required to establish links between the traditional uses and bioactivities, as well as ensure safety before clinical use. In addition, the good botanical identification of coltsfoot and content of morphologically close species is a precondition for quality supervision and control. Moreover, strict quality control measures are required in the studies investigating any aspect of the pharmacology and chemistry of coltsfoot.
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Affiliation(s)
- Shujuan Chen
- School of Pharmacy, Ningxia Medical University, Yinchuan, 750004, China.
| | - Lin Dong
- School of Pharmacy, Ningxia Medical University, Yinchuan, 750004, China; Ningxia Engineering and Technology Research Center for Modernization of Hui Medicine, Yinchuan, 750004, China; Key Laboratory of Hui Ethnic Medicine Modernization, Ministry of Education (Ningxia Medical University), Yinchuan, 750004, China.
| | - Hongfeng Quan
- School of Pharmacy, Ningxia Medical University, Yinchuan, 750004, China.
| | - Xirong Zhou
- School of Pharmacy, Ningxia Medical University, Yinchuan, 750004, China.
| | - Jiahua Ma
- School of Pharmacy, Ningxia Medical University, Yinchuan, 750004, China.
| | - Wenxin Xia
- School of Pharmacy, Ningxia Medical University, Yinchuan, 750004, China.
| | - Hao Zhou
- School of Pharmacy, Ningxia Medical University, Yinchuan, 750004, China.
| | - Xueyan Fu
- School of Pharmacy, Ningxia Medical University, Yinchuan, 750004, China; Ningxia Engineering and Technology Research Center for Modernization of Hui Medicine, Yinchuan, 750004, China; Key Laboratory of Hui Ethnic Medicine Modernization, Ministry of Education (Ningxia Medical University), Yinchuan, 750004, China.
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5
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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
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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
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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
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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]
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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.
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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.
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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.
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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
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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.
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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
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11
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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
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12
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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.
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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
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13
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Dong L, Yin L, Chen R, Zhang Y, Hua S, Quan H, Fu X. Anti-inflammatory effect of Calycosin glycoside on lipopolysaccharide-induced inflammatory responses in RAW 264.7 cells. Gene 2018; 675:94-101. [DOI: 10.1016/j.gene.2018.06.057] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 06/02/2018] [Accepted: 06/18/2018] [Indexed: 12/30/2022]
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14
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Huang J, Yin L, Dong L, Quan H, Chen R, Hua S, Ma J, Guo D, Fu X. Quality evaluation for Radix Astragali based on fingerprint, indicative components selection and QAMS. Biomed Chromatogr 2018; 32:e4343. [PMID: 30003570 DOI: 10.1002/bmc.4343] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 06/22/2018] [Accepted: 07/04/2018] [Indexed: 12/19/2022]
Abstract
Radix Astragali (RA) is one of the most widely used Chinese herbs prescribed in many Chinese formulas to reinforce 'Qi' and treat vital energy deficiency. This study combined fingerprinting with quantitative analysis multi-components by a single marker (QAMS) to improve the quality control standard for RA on the basis of existing quality control methods of traditional Chinese medicinal materials. UPLC-ESI-TOF-MS technique was used to evaluate the quality of RA by fingerprinting and QAMS. Using the anti-inflammatory, anti-oxidation and anti-anoxic activities to screen characteristic components of RA, the calycosin-7-O-β-d-glucoside (CG), ononin, astragaloside IV, astragaloside II, calycosin and astrageloside I significantly inhibited ear edema in mice, the calycosin and CG had good antioxidant activity and the astragaloside I had a significant anti-hypoxia activity. Astragaloside I, astragaloside II, astragaloside IV, ononin, calycosin and CG had significant pharmacological actions. These components were comprehensively used as the indicative components for the quality control of RA. Astragaloside I was used as the internal standard of the relative correction factors of CG (13.45), ononin (0.51), calycosin (12.08), astragaloside IV (0.73) and astragaloside II (0.81). Astragaloside I and CG were used as internal standards of the relative correction factors of the flavonoids and saponins of ononin (1.11), calycosin (0.04), astragaloside IV (0.73) and astragaloside II (0.81). The study combined fingerprinting with QAMS to improve the quality control standard for RA.
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Affiliation(s)
- Jun Huang
- School of Pharmacy, Ningxia Medical University, Yinchuan, China
| | - Lei Yin
- Shizuishan Maternal and Child Health Care Family Planning Service Center, Shizuishan, China
| | - Lin Dong
- School of Pharmacy, Ningxia Medical University, Yinchuan, China
| | - Hongfeng Quan
- School of Pharmacy, Ningxia Medical University, Yinchuan, China
| | - Rong Chen
- School of Pharmacy, Ningxia Medical University, Yinchuan, China
| | - Shiyao Hua
- School of Pharmacy, Ningxia Medical University, Yinchuan, China
| | - Jiahua Ma
- School of Pharmacy, Ningxia Medical University, Yinchuan, China
| | - Dongyan Guo
- School of Pharmacy, Ningxia Medical University, Yinchuan, China
| | - Xueyan Fu
- School of Pharmacy, Ningxia Medical University, Yinchuan, China.,Ningxia Engineering and Technology Research Center for Modernization of Hui Medicine, Yinchuan, China.,Key Laboratory of Hui Ethnic Medicine Modernization, Ministry of Education (Ningxia Medical University), Yinchuan, China
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15
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Huang J, Zhang Y, Dong L, Gao Q, Yin L, Quan H, Chen R, Fu X, Lin D. Ethnopharmacology, phytochemistry, and pharmacology of Cornus officinalis Sieb. et Zucc. J Ethnopharmacol 2018; 213:280-301. [PMID: 29155174 DOI: 10.1016/j.jep.2017.11.010] [Citation(s) in RCA: 100] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 11/04/2017] [Accepted: 11/09/2017] [Indexed: 05/22/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Cornus officinalis (Cornaceae), known in Chinese as "Shanzhuyu," is a frequently used traditional Chinese medicine. It tastes sour and is astringent and slightly warm in nature. Its fruits have long been used to treat kidney deficiency, high blood pressure, waist and knee pain, dizziness, tinnitus, impotence, spermatorrhea, menorrhagia, and other diseases in China. The main distribution areas are Shanxi and Gansu. AIM OF THE STUDY This review focused on the ethnopharmacological uses of the herb. We also focus on the phytochemical, pharmacological, and toxicological studies on C. officinalis. The recent analytical methods developed for the quality control of the herb's constituents are also reviewed. Additionally, future trends and prospects in the study of this herb are proposed. MATERIALS AND METHODS Information on C. officinalis was gathered by searching the internet (PubMed, ScienceDirect, Wiley, ACS, CNKI, Scifinder, Web of Science, Google Scholar, and Baidu Scholar) and libraries. RESULTS This review compiled the ethnopharmacological uses, including the classic prescriptions and historical applications. Approximately 300 chemical compounds have been isolated and identified from C. officinalis. The major active components of the plant are organic acids and iridoids, among which morroniside and loganin have been extensively investigated. The fruit of the plant has been used in treating many diseases in traditional medicine. Scientific studies indicated the herb's wide range of pharmacological activities, such as hepatic and renal protection, antidiabetes activity, cardioprotection, antioxidation, neuroprotection, antitumor activity, anti-inflammation, analgesic effects, antiaging activity, antiamnesia, antiosteoporosis, and immunoregulation. The analytical methods developed for the quantitative and qualitative determination of various compounds in the herb were further reviewed. CONCLUSIONS In this paper, we reviewed various studies conducted on C. officinalis, especially in areas of its ethnopharmacological use, as well as on its phytochemistry, pharmacology, and modern analytical methods used. Some of the herb's ethnomedical indications have been confirmed by the herb's pharmacological effects, such as its hepatic and renal protection and the antidiabetic effects. In particular, the crude extract and its chemical composition have exerted good therapeutic effect in diabetic treatment. C. officinalis entails additional attention on its pharmacological effects and drug development to expand its effective use clinically. Many advanced technologies are used for quality testing, but the detection component is exceedingly scarce for synthetically evaluating the quality of C. officinalis herbs. Thus, further research is necessary to investigate the quality control and toxicology of the plant, to further elucidate its clinical use, and to control herbal quality.
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Affiliation(s)
- Jun Huang
- School of Pharmacy, Ningxia Medical University, Yinchuan 750004, China
| | - Yiwei Zhang
- School of Basic Medical Sciences, Ningxia Medical University, Yinchuan 750004, China
| | - Lin Dong
- School of Pharmacy, Ningxia Medical University, Yinchuan 750004, China
| | - Qinghan Gao
- School of Public Health, Ningxia Medical University, Yinchuan 750004, China
| | - Lei Yin
- School of Pharmacy, Ningxia Medical University, Yinchuan 750004, China
| | - Hongfeng Quan
- School of Public Health, Ningxia Medical University, Yinchuan 750004, China
| | - Rong Chen
- School of Pharmacy, Ningxia Medical University, Yinchuan 750004, China
| | - Xueyan Fu
- School of Pharmacy, Ningxia Medical University, Yinchuan 750004, China; Ningxia Engineering and Technology Research Center for Modernization of Hui Medicine, Yinchuan 750004, China; Key Laboratory of Hui Ethnic Medicine Modernization, Ministry of Education (Ningxia Medical University), Yinchuan 750004, China.
| | - Dingbo Lin
- Oklahoma State University, United States.
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16
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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.
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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.
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17
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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.
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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
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18
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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.
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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
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19
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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
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20
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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.
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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
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21
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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.
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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
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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
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23
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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.
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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
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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.
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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
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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.
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Affiliation(s)
- C Ke
- Department of Medicine, University of British Columbia, Vancouver, Canada
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26
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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.
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Affiliation(s)
- L Y Adams
- MacEwan University, Edmonton, AB, Canada
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27
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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.
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Affiliation(s)
- E Chong
- Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, BC
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28
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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.
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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
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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.
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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
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Chen J, Liang H, Wu Y, Ji H, Liu C, Fu X, Zhang X, Wang J, Lin D, Gao X, Quan H, Zhao Y, Wang J, Wu X. Two New Compounds from the Roots of Ilex pubescens. Chem Nat Compd 2013. [DOI: 10.1007/s10600-013-0762-2] [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: 12/01/2022]
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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
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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
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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.
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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
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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.
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Affiliation(s)
- L M Lix
- School of Public Health, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.
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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
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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
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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
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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.
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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
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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: 68] [Impact Index Per Article: 5.2] [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.
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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
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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.
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Affiliation(s)
- C Kwon
- Division of Neurology, Foothills Medical Centre, Calgary, Alberta, Canada
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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]
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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]
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Ronksley PE, Hemmelgarn BR, Heitman SJ, Hanly PJ, Faris PD, Quan H, Tsai WH. Obstructive sleep apnoea is associated with diabetes in sleepy subjects. Thorax 2009; 64:834-9. [PMID: 19679579 DOI: 10.1136/thx.2009.115105] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Although obstructive sleep apnoea (OSA) has been linked to insulin resistance and glucose intolerance, it is unclear whether there is an independent association between OSA and diabetes mellitus (DM) and whether all patients with OSA are at risk. The objective of this study was to determine the association between OSA and DM in a large cohort of patients referred for sleep diagnostic testing. METHODS A cross-sectional analysis of participants in a clinic-based study was conducted between July 2005 and August 2007. DM was defined by self-report and concurrent use of diabetic medications (oral hypoglycaemics and/or insulin). Sensitivity analysis was performed using a validated administrative definition of diabetes. OSA was defined by the respiratory disturbance index (RDI) using polysomnography or ambulatory monitoring. Severe OSA was defined as an RDI > or = 30/h. Subjective sleepiness was defined as an Epworth Sleepiness Scale score > or = 10. RESULTS Complete data were available for 2149 patients. The prevalence of DM increased with increasing OSA severity (p<0.001). Severe OSA was associated with DM following adjustment for patient demographics, weight and neck circumference (odds ratio (OR) 2.18; 95% CI 1.22 to 3.89; p<0.01). Following a stratified analysis, this relationship was observed exclusively in sleepy patients (OR 2.59 (95% CI 1.35 to 4.97) vs 1.16 (95% CI 0.31 to 4.37) in non-sleepy patients). CONCLUSIONS Severe OSA is independently associated with DM in patients who report excessive sleepiness. Future studies investigating the impact of OSA treatment on DM may wish to focus on this patient population.
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Affiliation(s)
- P E Ronksley
- Department of Community Health Sciences, Faculty of Medicine, University of Calgary, Calgary, Canada
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Drosler SE, Klazinga NS, Romano PS, Tancredi DJ, Gogorcena Aoiz MA, Hewitt MC, Scobie S, Soop M, Wen E, Quan H, Ghali WA, Mattke S, Kelley E. Application of patient safety indicators internationally: a pilot study among seven countries. Int J Qual Health Care 2009; 21:272-8. [DOI: 10.1093/intqhc/mzp018] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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King K, Khan N, Quan H. FAMP3 Ethnic Variation in Acute Myocardial Infarction Presentation and Access to Care. Eur J Cardiovasc Nurs 2009. [DOI: 10.1016/s1474-5151(09)60032-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 11/24/2022]
Affiliation(s)
- K.M. King
- University of Calgary, Calgary, Canada
| | - N.A. Khan
- University of British Columbia, Vancouver, Canada
| | - H. Quan
- University of Calgary, Calgary, Canada
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Miao Z, Wang L, Xu Z, Han X, Quan H, Li G. Age-related changes of serum leptin, insulin, IGF-I
and thyroid hormones levels in growing Jinhua
and Landrace gilts. J Anim Feed Sci 2008. [DOI: 10.22358/jafs/66683/2008] [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] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Luthi JC, Januel JM, Taffé P, Quan H, Borst F, Ghali W, Burnand B. Évaluation temporelle de la validité des données hospitalières de routine pour mesurer les comorbidités composant les indices de Charlson et d’Elixhauser entre 1999 et 2003 dans trois hôpitaux suisses. Rev Epidemiol Sante Publique 2008. [DOI: 10.1016/j.respe.2008.02.034] [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: 10/22/2022] Open
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Januel JM, Couris CM, Quan H, Luthi JC, Drosler S, Sundararajan V, Trombert-Paviot B, Pradat E, Touzet S, Halfon P, Wen E, Shepheart J, Webster G, Romano P, So L, Moskal L, Tournay-Lewis L, Sundaresan L, Kelley E, Klazinga N, Ghali W, Burnand B, Colin C. Adaptation à la classification CIM-10 d’indicateurs de la sécurité des soins à l’hôpital développés à partir des données médico-administratives : le projet PSI. Rev Epidemiol Sante Publique 2008. [DOI: 10.1016/j.respe.2008.02.063] [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: 11/29/2022] Open
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Zhu ZY, Cao YY, Wang Y, Quan H, Zhao JX, Jia XM, Cao YB, Gao PH, Xu Z, Jiang YY. Candida albicans THI13 disruption affects production of monocytic cytokines. Oral Microbiol Immunol 2007; 22:293-7. [PMID: 17803625 DOI: 10.1111/j.1399-302x.2007.00357.x] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
INTRODUCTION The Candida albicansTHI13 gene was identified by its homology to the Candida tropicalis CtNMT1 gene, which is involved in pyrimidine precursor biosynthesis. METHODS Disruption of THI13 revealed that this gene played a minor role in thiamin biosynthesis in C. albicans. Purified human monocytes were incubated with C. albicans at the optimal Candida: monocyte ratio of 0.5 and cytokines in the supernatants were measured by enzyme-linked immunosorbent assay. RESULTS AND DISCUSSION This experiment showed that the wild-type strain significantly induced interleukin-10 (IL-10) production but had little effect on IL-12 production, and that THI13 mutants had no significant effect on IL-10 production, though the IL-12 level was increased in the supernatants. These results suggest that THI13 is involved in the host effective immune response by regulating IL-10 and IL-12 production.
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Affiliation(s)
- Z Y Zhu
- School of Pharmacy, Second Military Medical University, Shanghai, China
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