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Wan Q, Shi HB. [Research status of animal models of secretory otitis media]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2024; 59:405-410. [PMID: 38622027 DOI: 10.3760/cma.j.cn115330-20231008-00124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Affiliation(s)
- Q Wan
- Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China
| | - H B Shi
- Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China
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Deng ZS, Wu F, Wan Q, Zhou YM, Ran PX. [Advances in research on impaired ventilatory efficiency in cardiopulmonary exercise testing and chronic obstructive pulmonary disease]. Zhonghua Jie He He Hu Xi Za Zhi 2024; 47:167-171. [PMID: 38309969 DOI: 10.3760/cma.j.cn112147-20231015-00232] [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: 02/05/2024]
Abstract
The investigation of the pathophysiological mechanisms and potential applications of impaired ventilatory efficiency in cardiopulmonary exercise testing has received considerable attention in the field of chronic obstructive pulmonary disease (COPD) research worldwide. A growing body of evidence supports the notion that impaired ventilatory efficiency is an important indicator of exertional dyspnea, reduced exercise capacity, and mortality in patients with COPD. As a result, ventilatory efficiency is emerging as a promising therapeutic target for alleviating dyspnea in COPD patients. This review aims to provide a comprehensive summary of the research progress into impaired ventilatory efficiency in patients with COPD. The primary objective of this review is to improve the understanding of COPD patients with impaired ventilatory efficiency, with the ultimate goal of facilitating the comprehensive assessment and management of COPD.
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Affiliation(s)
- Z S Deng
- Guangzhou Institute of Respiratory Health (National Clinical Research Center for Respiratory Disease, State Key Laboratory of Respiratory Disease, National Center for Respiratory Medicine), The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou 510120, China
| | - F Wu
- Guangzhou National Laboratory, Guangzhou Institute of Respiratory Health (National Clinical Research Center for Respiratory Disease, State Key Laboratory of Respiratory Disease, National Center for Respiratory Medicine), The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou 510005, China
| | - Q Wan
- Guangzhou Institute of Respiratory Health (National Clinical Research Center for Respiratory Disease, State Key Laboratory of Respiratory Disease, National Center for Respiratory Medicine), The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou 510120, China
| | - Y M Zhou
- Guangzhou Institute of Respiratory Health (National Clinical Research Center for Respiratory Disease, State Key Laboratory of Respiratory Disease, National Center for Respiratory Medicine), The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou 510120, China
| | - P X Ran
- Guangzhou National Laboratory, Guangzhou Institute of Respiratory Health (National Clinical Research Center for Respiratory Disease, State Key Laboratory of Respiratory Disease, National Center for Respiratory Medicine), The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou 510005, China
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Su YR, Gu SM, Liu YR, Cheng YQ, Wan Q, Sang X, Chen MH, Liu WQ, Shi Q, Liu C, Liu Y, Li CY, Wang ZC, Wang XR. Partial cellular reprogramming stably restores the stemness of senescent epidermal stem cells. Eur Rev Med Pharmacol Sci 2023; 27:5397-5409. [PMID: 37401274 DOI: 10.26355/eurrev_202306_32774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 07/05/2023]
Abstract
OBJECTIVE Adult stem cell senescence and exhaustion are important drivers of organismal age. Restored stem cell self-renewal has revealed novel therapeutic targets for decreasing the incidence of age-associated diseases (AADs) and prolonging the human health span. Transient ectopic expression of the reprogramming factors Oct3/4, Sox2, Klf4 and c-Myc (collectively known as OSKM) in somatic cells can induce partial cellular reprogramming and effectively ameliorate their age-associated hallmarks. However, how this form of rejuvenation is applied to senescent stem cells remains unknown. MATERIALS AND METHODS The Integrin-α6highCD71high epidermal stem cells (ESCs) with low self-renewal ability were sorted by flow cytometry and then treated by the interrupted reprogramming induced by transient expression of OSKM. The ability of secondary clones' generation and self-proliferation in vitro, as well as stem cell marker p63, were detected to determine their self-renewal ability. Besides, gene and protein of epidermal cell markers were detected to determine whether their cell identities were retained. Finally, DNA methylation age (eAge) and DNA dehydroxymethylase/methyltransferase were analyzed to explore the alternation of their global DNA methylation pattern during this rejuvenation. RESULTS The partial reprogramming restored the youthful self-renewal and proliferation in senescent ESCs, including larger secondary clone generation, higher expression of stem cell marker p63 and proliferation marker Ki67, and faster proliferation speed, in each case without abolishing epithelial cellular identity. Moreover, the rejuvenation of adult stem cells could be maintained for 2 weeks after reprogramming factor withdrawal, which was more stable than that of differentiated somatic cells. Additionally, we found that partial reprogramming counteracted the acceleration of eAge in senescent epidermal stem cells and DNA methyltransferase 1 (DNMT1) may play a crucial role in this process. CONCLUSIONS Partial reprogramming has high therapeutic potential for reversing adult stem cell age, providing an advanced way to treat AADs.
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Affiliation(s)
- Y-R Su
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, China.
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Yin H, Shi D, Luo R, Liu S, Wan Q, Shi H. Adenocarcinoma invasivo de pulmón con extensión a la aurícula izquierda visualizado por imágenes de PET/TC con18F-FDG. Rev Esp Med Nucl Imagen Mol 2022. [DOI: 10.1016/j.remn.2021.08.007] [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: 11/06/2022]
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Wan Q, Wang YZ, Li XC, Xia XY, Wang P, Peng Y, Liang CH. [The stability and repeatability of radiomics features based on lung diffusion-weighted imaging]. Zhonghua Yi Xue Za Zhi 2022; 102:190-195. [PMID: 35042287 DOI: 10.3760/cma.j.cn112137-20210608-01309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To evaluate the feasibility, robustness and reproducibility of radiomics features derived from lung diffusion-weighted imaging (DWI). Methods: Thirty patients with pulmonary nodules/masses who underwent magnetic resonance imaging examination in the Department of Radiology, the First Affiliated Hospital of Guangzhou Medical University, from January 4 2019 to May 5 2019, including 16 males and 14 females, aged from 27 to 69 (57±11) years, were prospectively collected. Planar echo imaging (EPI) -DWI and fast spin-echo (TSE) -DWI scans were performed under free-breathing conditions. Each scan was repeated at an interval of 5 minutes, and the corresponding apparent diffusion coefficient (ADC) maps were reconstructed. Each DWI and ADC sequence (a total of eight groups of images) were manually segmented by two radiologists, and a total of 396 radiomics features in 6 categories were extracted from each group of images. Consistency correlation coefficient (CCC) and dynamic range (DR) were used to evaluate the robustness of features between two scans, and stable features were defined as both CCC values and DR values ≥0.85. Intra-observer and interobserver reproducibility were evaluated by intra-group correlation coefficient (ICC), and ICC values≥0.75 was considered to be good reproducibility. Results: Regardless of EPI or TSE technique, the number of robust features extracted fromDWI (TSE: n=197, EPI: n=169) were higher than that of the corresponding ADC (TSE: n=126, EPI: n=148). The proportion of robust features of TSE-DWI、EPI-DWI、TSE-ADC、EPI-ADC was 49.7% (197/396), 42.7% (169/396), 31.8% (126/396) and 37.4% (148/396), respectively. Of the 396 features, 54 (13.6%) of them demonstrated great robustness (CCC and DR≥0.85) and interobserver and interobserver reproducibility (ICC≥0.75) across all sequences. Conclusions: Radiomics features derived from lung DWI showed robustness and reproducibility. Different sequences and different feature clusters have different proportions of stable features, and some features have good robustness and reproducibility between different scans, different observers, and even different sequences.
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Affiliation(s)
- Q Wan
- Department of Radiology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Y Z Wang
- Department of Radiology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - X C Li
- Department of Radiology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - X Y Xia
- Department of Radiology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - P Wang
- Department of Radiology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Y Peng
- Department of Radiology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - C H Liang
- Department of Radiology, Guangdong Provincial People's Hospital, Guangzhou 510080, China
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Guo YL, Kong WZ, Wan Q, Zheng WJY, Xi JQ, Liu SQ, Wang MS, Jin YH. [Analysis of a pedigree with inherited factor V deficiency caused by compound heterozygous mutation]. Zhonghua Xue Ye Xue Za Zhi 2021; 42:135-139. [PMID: 33858044 PMCID: PMC8071673 DOI: 10.3760/cma.j.issn.0253-2727.2021.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the molecular pathogenesis of a family with hereditary factor Ⅴ (FⅤ) deficiency. Methods: All the exons, flanking sequences, 5' and 3' untranslated regions of the F5 of the proband, and the corresponding mutation sites of the family members were analyzed via direct DNA sequencing. The CAT measurement was used to detect the amount of thrombin produced. The ClustalX software was used to analyze the conservation of mutation sites. The online bioinformatics software, Mutation Taster, PolyPhen-2, PROVEAN, LRT, and SIFT were applied to predict the effects of mutation sites on protein function. The Swiss-PdbViewer software was used to analyze the changes in the protein model and intermolecular force before and after amino acid variation. Results: The proband had a heterozygous missense mutation c.1258G>T (p.Gly392Cys) in exon 8 of the F5, and a heterozygous deletion mutation c.4797delG (p.Glu1572Lys fsX19) in exon 14, which results in a frameshift and produces a truncated protein. Her grandfather and father had p.Gly392Cys heterozygous variation, whereas her maternal grandmother, mother, little aunt, and cousin all had p.Glu1572LysfsX19 heterozygous variation. The ratio of proband's thrombin generation delay to peak time was significantly increased. Conservation analysis results showed that p.Gly392 was located in a conserved region among the 10 homologous species. Five online bioinformatics software predicted that p.Gly392Cys was pathogenic, and Mutation Taster also predicted p.Glu1572Lys fsX19 as a pathogenic variant. Protein model analysis showed that the replacement of Gly392 by Cys392 can lead to the extension of the original hydrogen bond and the formation of a new steric hindrance, which affected the stability of the protein structure. Conclusion: The c.1258G>T heterozygous missense mutation in exon 8 and the c.4797delG heterozygous deletion mutation in exon 14 of the F5 may be responsible for the decrease of FⅤ levels in this family.
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Affiliation(s)
- Y L Guo
- Laboratory Department of Wenzhou Chinese Medicine Hospital, Wenzhou 325000, China
| | - W Z Kong
- Laboratory Department of Wenzhou Chinese Medicine Hospital, Wenzhou 325000, China
| | - Q Wan
- Laboratory Department of Wenzhou Chinese Medicine Hospital, Wenzhou 325000, China
| | - W J Y Zheng
- Laboratory Department of Wenzhou Chinese Medicine Hospital, Wenzhou 325000, China
| | - J Q Xi
- Laboratory Department of Wenzhou Chinese Medicine Hospital, Wenzhou 325000, China
| | - S Q Liu
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
| | - M S Wang
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
| | - Y H Jin
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
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Chen JM, Wan Q, Zhu HY, Ge YQ, Wu LL, Zhai J, Ding ZM. [The value of conventional magnetic resonance imaging based radiomic model in predicting the texture of pituitary macroadenoma]. Zhonghua Yi Xue Za Zhi 2020; 100:3626-3631. [PMID: 33333688 DOI: 10.3760/cma.j.cn112137-20200511-01511] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the value of conventional magnetic resonance imaging (MRI) based radiomic model in predicting the texture of pituitary macroadenoma. Methods: The complete data of 101 patients with pituitary macroadenoma confirmed by surgery and pathology in Yijishan Hospital of Wannan Medical College from December 2014 to December 2019 were retrospectively analyzed. According to the texture of the intraoperative pituitary tumor, patients were divided into soft group (n=58) and hard group (n=43). They were randomly divided into training group (n=72) and validation group (n=29) at a ratio of 7∶3. All patients underwent conventional MRI scan of the pituitary gland. Itk-snap software was used to manually outline the T(1)-weighted image (T(1)WI), T(2)-weighted image (T(2)WI) and enhanced T(1)WI image section by section on tumor area of interest (ROI) and perform three-dimensional fusion. Then AK software was imported to extract texture features. The regression analysis methods of minimum redundancy maximum relevance (mRMR) and least absolute shrinkage and selection operator (LASSO) were used for feature selection and radiomic signature establishment. The reliability of the model was verified by 100 leave-group-out cross validation (LGOCV), and the predictive ability of the model was evaluated by drawing the receiver operating characteristic (ROC) curve. The decision curve analysis (DCA) was used to evaluate the clinical application value of the model. Results: The AUC (Area Under the ROC Curve) (95%CI) values of T1WI, T2WI, enhanced T1WI, and the combined sequence model to predict the texture of pituitary macroadenomas in the training and validation groups were 0.91 (0.84-0.98) and 0.90 (0.78-1.00), 0.86 (0.78-0.95) and 0.83 (0.64-1.00), 0.90 (0.83-0.97) and 0.89 (0.77-1.00),0.92 (0.85-0.98) and 0.91 (0.79-1.00), respectively. DCA demonstrated that T(1)WI, T(2)WI, enhanced T(1)WI, and combined sequence model all had good net benefits in clinical practice. Conclusions: T(1)WI, T(2)WI, enhanced T(1)WI, and combined sequence model of conventional MRI all had high efficacy in predicting the texture of pituitary macroadenoma, which provided a new quantitative method for predicting the texture of pituitary macroadenoma.
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Affiliation(s)
- J M Chen
- Medical Imaging Central, Yijishan Hospital of Wannan Medical College, Wuhu 241001, China
| | - Q Wan
- Medical Imaging Central, Yijishan Hospital of Wannan Medical College, Wuhu 241001, China
| | - H Y Zhu
- Medical Imaging Central, Yijishan Hospital of Wannan Medical College, Wuhu 241001, China
| | - Y Q Ge
- GE health care, Shanghai 200000, China
| | - L L Wu
- Medical Imaging Central, Yijishan Hospital of Wannan Medical College, Wuhu 241001, China
| | - J Zhai
- Medical Imaging Central, Yijishan Hospital of Wannan Medical College, Wuhu 241001, China
| | - Z M Ding
- Medical Imaging Central, Yijishan Hospital of Wannan Medical College, Wuhu 241001, China
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Tang LX, Su SF, Wan Q, He P, Xhang Y, Cheng XM. Novel long non-coding RNA LBX2-AS1 indicates poor prognosis and promotes cell proliferation and metastasis through Notch signaling in non-small cell lung cancer. Eur Rev Med Pharmacol Sci 2020; 23:7419-7429. [PMID: 31539129 DOI: 10.26355/eurrev_201909_18851] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Recent reports have suggested that long non-coding RNA LBX2 antisense RNA 1 (LBX2-AS1) acts as an important regulator in cancer progression. This study aimed to investigate the clinical significance of LBX2-AS1 in non-small cell lung cancer (NSCLC) patients and its biological functions. PATIENTS AND METHODS The expressions of LBX2-AS1 were examined in 165 paired NSCLC tissues and adjacent normal tissues from NSCLC patients by qRT-PCR. The clinical significance of LBX2-AS1 was determined using a series of statistical methods. The effects of LBX2-AS1 knockdown on NSCLC cell proliferation, migration, and invasion were investigated by CCK-8 assays, colony formation assays, EdU proliferation assays, Wound healing assays, and transwell assays. The promotive roles of LBX2-AS1 on Notch1 signal were determined using RT-PCR and Western blot. RESULTS We found that LBX2-AS1 was highly expressed in NSCLC tissues and cell lines. The increased levels of LBX2-AS1 were observed to be positively correlated with TNM stage, histological grade, and lymph node metastasis. Furthermore, the Kaplan-Meier survival curves indicated that patients with higher expressions of LBX2-AS1 had unfavorable overall survival. Lost-of-functions assays revealed that the knockdown of LBX2-AS1 in H1299 and A549 cells inhibited cell proliferation, migration, and invasion. Mechanistic studies revealed that the suppression of LBX2-AS1 resulted in the reduced expressions of Notch1, p21, and Hes1, suggesting that LBX2-AS1 might promote the activation of the Notch pathway. CONCLUSIONS Our study identified a novel NSCLC-related lncRNA LBX2-AS1, which may represent a novel prognostic biomarker and a potential therapeutic target for NSCLC.
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Affiliation(s)
- L-X Tang
- Department of Respiratory Geriatrics and Otolaryngology, Chongqing Public Health Medical Center, Shapingba, Chongqing,
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Marden G, Wan Q, Wilks J, Nevin K, Feeney M, Wisniacki N, Trojanowski M, Bujor A, Stawski L, Trojanowska M. The role of the oncostatin M/OSM receptor β axis in activating dermal microvascular endothelial cells in systemic sclerosis. Arthritis Res Ther 2020; 22:179. [PMID: 32736577 PMCID: PMC7393919 DOI: 10.1186/s13075-020-02266-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 07/09/2020] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Scleroderma (SSc) is a rare autoimmune disease characterized by vascular impairment and progressive fibrosis of the skin and other organs. Oncostatin M, a member of the IL-6 family, is elevated in SSc serum and was recognized as a significant player in various stages of fibrosis. The goal of this study was to assess the contribution of the OSM/OSMRβ pathway to endothelial cell (EC) injury and activation in SSc. METHODS IHC and IF were used to assess the distribution of OSM and OSMRβ in SSc (n = 14) and healthy control (n = 7) skin biopsies. Cell culture experiments were performed in human dermal microvascular endothelial cells (HDMECs) and included mRNA and protein analysis, and cell migration and proliferation assays. Ex vivo skin organoid culture was used to evaluate the effect of OSM on perivascular fibrosis. RESULTS OSMRβ protein was elevated in dermal ECs and in fibroblasts of SSc patients. Treatments of HDMECs with OSM or IL-6+sIL-6R have demonstrated that both cytokines similarly stimulated proinflammatory genes and genes related to endothelial to mesenchymal transition (EndMT). OSM was more effective than IL-6+sIL-6R in inducing cell migration, while both treatments similarly induced cell proliferation. The effects of OSM were mediated via OSMRβ and STAT3, while the LIFR did not contribute to these responses. Both OSM and IL-6+sIL-6R induced profibrotic gene expression in HDMECs, as well as expansion of the perivascular PDGFRβ+ cells in the ex vivo human skin culture system. Additional studies in HDMECs showed that siRNA-mediated downregulation of FLI1 and its close homolog ERG resulted in increased expression of OSMRβ in HDMECs. CONCLUSIONS This work provides new insights into the role of the OSM/OSMRβ axis in activation/injury of dermal ECs and supports the involvement of this pathway in SSc vascular disease.
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Affiliation(s)
- G Marden
- Arthritis Centre, Boston University School of Medicine, Boston University, 72 East Concord St, E-5, Boston, MA, 02118, USA
| | - Q Wan
- Arthritis Centre, Boston University School of Medicine, Boston University, 72 East Concord St, E-5, Boston, MA, 02118, USA
- Department of Rheumatology and Endocrinology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - J Wilks
- Arthritis Centre, Boston University School of Medicine, Boston University, 72 East Concord St, E-5, Boston, MA, 02118, USA
| | - K Nevin
- Immuno-Inflammation Therapeutic Area Unit, GlaxoSmithKline, Stevenage, UK
| | - M Feeney
- Immuno-Inflammation Therapeutic Area Unit, GlaxoSmithKline, Stevenage, UK
| | - N Wisniacki
- Immuno-Inflammation Therapeutic Area Unit, GlaxoSmithKline, Stevenage, UK
| | - M Trojanowski
- Arthritis Centre, Boston University School of Medicine, Boston University, 72 East Concord St, E-5, Boston, MA, 02118, USA
| | - A Bujor
- Arthritis Centre, Boston University School of Medicine, Boston University, 72 East Concord St, E-5, Boston, MA, 02118, USA
| | - L Stawski
- Arthritis Centre, Boston University School of Medicine, Boston University, 72 East Concord St, E-5, Boston, MA, 02118, USA
| | - M Trojanowska
- Arthritis Centre, Boston University School of Medicine, Boston University, 72 East Concord St, E-5, Boston, MA, 02118, USA.
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Zheng R, Niu J, Wu S, Wang T, Wang S, Xu M, Chen Y, Dai M, Zhang D, Yu X, Tang X, Hu R, Ye Z, Shi L, Su Q, Yan L, Qin G, Wan Q, Chen G, Gao Z, Wang G, Shen F, Luo Z, Qin Y, Chen L, Huo Y, Li Q, Zhang Y, Liu C, Wang Y, Wu S, Yang T, Deng H, Chen L, Zhao J, Mu Y, Xu Y, Li M, Lu J, Wang W, Zhao Z, Xu Y, Bi Y, Ning G. Gender and age differences in the association between sleep characteristics and fasting glucose levels in Chinese adults. Diabetes Metab 2020; 47:101174. [PMID: 32659495 DOI: 10.1016/j.diabet.2020.07.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 06/24/2020] [Accepted: 07/01/2020] [Indexed: 01/19/2023]
Abstract
AIM The present study examined the associations between night-time sleep duration, midday napping duration and bedtime, and fasting glucose levels, and whether or not such associations are dependent on gender and age. METHODS This study was a cross-sectional analysis of 172,901 adults aged≥40 years living in mainland China. Sleep duration was obtained by self-reports of bedtime at night, waking-up time the next morning and average napping duration at midday. Fasting plasma glucose (FPG)≥7.0mmol/L was defined as hyperglycaemia. Independent associations between night-time sleep duration, midday naptime duration and bedtime with hyperglycaemia were evaluated using regression models. RESULTS Compared with night-time sleep durations of 6-7.9h, both short (<6h) and long (≥8h) night-time sleep durations were significantly associated with an increased risk of hyperglycaemia in women [odds ratio (OR): 1.12, 95% confidence interval (CI): 1.01-1.29 and OR: 1.14, 95% CI: 1.08-1.21, respectively], and revealed a U-shaped distribution of risk in women and no significant association in men. Long midday nap durations (≥1h) were significantly but weakly associated with hyperglycaemia (OR: 1.04, 95% CI: 1.01-1.09) compared with no napping without interactions from gender or age, whereas the association between bedtime and fasting glucose levels did vary according to gender and age. CONCLUSION Night-time sleep duration, midday napping duration and bedtime were all independently associated with the risk of hyperglycaemia, and some of the associations between these sleep characteristics and hyperglycaemia were gender- and age-dependent.
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Affiliation(s)
- R Zheng
- Shanghai National Clinical Research Centre for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of China, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, China
| | - J Niu
- Shanghai National Clinical Research Centre for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of China, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, China
| | - S Wu
- Shanghai National Clinical Research Centre for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of China, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, China
| | - T Wang
- Shanghai National Clinical Research Centre for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of China, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, China
| | - S Wang
- Shanghai National Clinical Research Centre for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of China, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, China
| | - M Xu
- Shanghai National Clinical Research Centre for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of China, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, China
| | - Y Chen
- Shanghai National Clinical Research Centre for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of China, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, China
| | - M Dai
- Shanghai National Clinical Research Centre for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of China, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, China
| | - D Zhang
- Shanghai National Clinical Research Centre for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of China, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, China
| | - X Yu
- Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - X Tang
- First Hospital of Lanzhou University, Lanzhou, China
| | - R Hu
- Zhejiang Provincial Centre for Disease Control and Prevention, Zhejiang, China
| | - Z Ye
- Zhejiang Provincial Centre for Disease Control and Prevention, Zhejiang, China
| | - L Shi
- Affiliated Hospital of Guiyang Medical College, Guiyang, China
| | - Q Su
- Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - L Yan
- Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - G Qin
- First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Q Wan
- Affiliated Hospital of Luzhou Medical College, Luzhou, China
| | - G Chen
- Fujian Provincial Hospital, Fujian Medical University, Fuzhou, China
| | - Z Gao
- Dalian Municipal Central Hospital, Dalian Medical University, Dalian, China
| | - G Wang
- First Hospital of Jilin University, Changchun, China
| | - F Shen
- First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Z Luo
- First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Y Qin
- First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - L Chen
- Qilu Hospital of Shandong University, Jinan, China
| | - Y Huo
- Jiangxi Provincial People's Hospital Affiliated to Nanchang University, Nanchang, China
| | - Q Li
- Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Y Zhang
- Central Hospital of Shanghai Jiading District, Shanghai, China
| | - C Liu
- Jiangsu Province Hospital on Integration of Chinese and Western Medicine, Nanjing, China
| | - Y Wang
- First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - S Wu
- Karamay Municipal People's Hospital, Xinjiang, China
| | - T Yang
- First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - H Deng
- First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - L Chen
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - J Zhao
- Shandong Provincial Hospital affiliated to Shandong University, Jinan, China
| | - Y Mu
- Chinese People's Liberation Army General Hospital, Beijing, China
| | - Y Xu
- Clinical Trials Centre, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - M Li
- Shanghai National Clinical Research Centre for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of China, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, China
| | - J Lu
- Shanghai National Clinical Research Centre for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of China, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, China
| | - W Wang
- Shanghai National Clinical Research Centre for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of China, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, China
| | - Z Zhao
- Shanghai National Clinical Research Centre for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of China, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, China.
| | - Y Xu
- Shanghai National Clinical Research Centre for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of China, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, China.
| | - Y Bi
- Shanghai National Clinical Research Centre for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of China, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, China.
| | - G Ning
- Shanghai National Clinical Research Centre for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of China, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, China
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Yang TY, Wan Q, Yan DY, Zhu Z, Wang ZW, Peng C, Huang YB, Yu R, Hu J, Mao ZQ, Li S, Yang SA, Zheng H, Jia JF, Shi YG, Xu N. Directional massless Dirac fermions in a layered van der Waals material with one-dimensional long-range order. Nat Mater 2020; 19:27-33. [PMID: 31591532 DOI: 10.1038/s41563-019-0494-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 08/28/2019] [Indexed: 06/10/2023]
Abstract
One or a few layers of van der Waals (vdW) materials are promising for applications in nanoscale electronics. Established properties include high mobility in graphene, a large direct gap in monolayer MoS2, the quantum spin Hall effect in monolayer WTe2 and so on. These exciting properties arise from electron quantum confinement in the two-dimensional limit. Here, we use angle-resolved photoemission spectroscopy to reveal directional massless Dirac fermions due to one-dimensional confinement of carriers in the layered vdW material NbSi0.45Te2. The one-dimensional directional massless Dirac fermions are protected by non-symmorphic symmetry, and emerge from a stripe-like structural modulation with long-range translational symmetry only along the stripe direction as we show using scanning tunnelling microscopy. Our work not only provides a playground for investigating further the properties of directional massless Dirac fermions, but also introduces a unique component with one-dimensional long-range order for engineering nano-electronic devices based on heterostructures of vdW materials.
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Affiliation(s)
- T Y Yang
- Institute for Advanced Studies, Wuhan University, Wuhan, China
| | - Q Wan
- Institute for Advanced Studies, Wuhan University, Wuhan, China
| | - D Y Yan
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing, China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Z Zhu
- Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), Shenyang National Laboratory for Materials Science, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
| | - Z W Wang
- School of Physics and Technology, Wuhan University, Wuhan, China
| | - C Peng
- Institute for Advanced Studies, Wuhan University, Wuhan, China
| | - Y B Huang
- Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, China
| | - R Yu
- School of Physics and Technology, Wuhan University, Wuhan, China
| | - J Hu
- Department of Physics, University of Arkansas, Fayetteville, AR, USA
| | - Z Q Mao
- Department of Physics, Pennsylvania State University, University Park, PA, USA
| | - Si Li
- Research Laboratory for Quantum Materials, Singapore University of Technology and Design, Singapore, Singapore
| | - Shengyuan A Yang
- Research Laboratory for Quantum Materials, Singapore University of Technology and Design, Singapore, Singapore
| | - Hao Zheng
- Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), Shenyang National Laboratory for Materials Science, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
- Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai, China
| | - Jin -Feng Jia
- Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), Shenyang National Laboratory for Materials Science, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
- Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai, China
| | - Y G Shi
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing, China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, China
- Songshan Lake Materials Laboratory, Dongguan, China
| | - N Xu
- Institute for Advanced Studies, Wuhan University, Wuhan, China.
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12
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Zhou L, Wang Y, Wan Q, Perron D, Zhu R, Wang L, Gauld S, Veldman T. 394 IL-23 Antibodies in Psoriasis – a Non-Clinical Perspective. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.396] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Ye H, Liu XJ, Hui Y, Liang YH, Li CH, Wan Q. USF1 gene polymorphisms may associate with the efficacy and safety of chemotherapy based on paclitaxel and prognosis in the treatment of ovarian cancer. Neoplasma 2019; 65:153-160. [PMID: 29322800 DOI: 10.4149/neo_2018_170322n205] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
This study was supposed to investigate the correlation between the functional single nucleotide polymorphisms (SNPs) (rs2516839 and rs3737787) in USF1 gene and the efficacy and safety of paclitaxel-based chemotherapy and prognosis in the treatment of ovarian cancer (OC). In total 100 OC patients were selected and divided into the sensitive group and the resistantgroup according to the tumor response to paclitaxel-based chemotherapy after surgery, and the incidence of observed and recorded toxic reaction. Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method was applied to test the polymorphisms of rs2516839 and rs3737787 in USF1 gene after extraction of DNA. The correlation between USF1 gene polymorphisms and paclitaxel-based chemotherapy resistance was analyzed using Logistic regression analysis. Stratified analysis was used to test the incidence of toxic reaction in OC patients. Cox proportional hazard model was adapted to make a multiple-factor survival analysis. Significant differences exhibited in the genotype and the allele frequencies of rs2516839 between the sensitive and resistant groups, which showed no obvious difference in the genotype and allele frequencies of rs3737787. OC patients carrying the GA+AA genotype had higher incidence of serious toxic reaction than those carrying the GG genotype. Physical status score, tumor type, maximum tumor diameter and rs2516839 were the independent risk factors for the prognosis of OC patients. Taken together, our results suggest that the rs2516839 polymorphism in USF1 gene may associate with the efficacy and safety of paclitaxel-based chemotherapy and prognosis in the treatment of OC.
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Pan J, Gao CJ, Tao YJ, Shen CX, Zhang JY, Xia ZL, Wan Q, Wu H, Gao YJ, Shen H, Lu ZG, Wei M. 288Evaluation of elevated left ventricular end diastolic pressure in patients with preserved ejection fraction using cardiac magnetic resonance. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez114.006] [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: 11/13/2022] Open
Affiliation(s)
- J Pan
- Shanghai Sixth People"s Hospital of Shanghai Jiaotong University, Shanghai, China
| | - C J Gao
- Shanghai Sixth People"s Hospital of Shanghai Jiaotong University, Shanghai, China
| | - Y J Tao
- Shanghai Sixth People"s Hospital of Shanghai Jiaotong University, Shanghai, China
| | - C X Shen
- Shanghai Sixth People"s Hospital of Shanghai Jiaotong University, Shanghai, China
| | - J Y Zhang
- Shanghai Sixth People"s Hospital of Shanghai Jiaotong University, Shanghai, China
| | - Z L Xia
- Shanghai Sixth People"s Hospital of Shanghai Jiaotong University, Shanghai, China
| | - Q Wan
- Shanghai Sixth People"s Hospital of Shanghai Jiaotong University, Shanghai, China
| | - H Wu
- Shanghai Sixth People"s Hospital of Shanghai Jiaotong University, Shanghai, China
| | - Y J Gao
- Shanghai Sixth People"s Hospital of Shanghai Jiaotong University, Shanghai, China
| | - H Shen
- Shanghai Sixth People"s Hospital of Shanghai Jiaotong University, Shanghai, China
| | - Z G Lu
- Shanghai Sixth People"s Hospital of Shanghai Jiaotong University, Shanghai, China
| | - M Wei
- Shanghai Sixth People"s Hospital of Shanghai Jiaotong University, Shanghai, China
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Cheng RY, Yao JR, Wan Q, Guo JW, Pu FF, Shi L, Hu W, Yang YH, Li L, Li M, He F. Oral administration of Bifidobacterium bifidum TMC3115 to neonatal mice may alleviate IgE-mediated allergic risk in adulthood. Benef Microbes 2018; 9:815-828. [PMID: 29888657 DOI: 10.3920/bm2018.0005] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
This study aimed to demonstrate whether exposure to bifidobacteria during early life influences immunity and alleviates the risk of immunoglobulin E (IgE)-mediated allergies in adulthood. BALB/c neonatal mice (n=54) were administered with a lyophilised cell preparation of Bifidobacterium bifidum TMC3115 (TMC3115) for 3 weeks. Following the intervention, the mice were immunised with intraperitoneal ovalbumin (OVA). The morphology and function of the intestinal epithelium were determined using histopathological examinations. Intestinal microbiota was detected using quantitative PCR and characterised using next-generation sequencing of 16S rRNA genes from faecal DNA. Caecal short-chain fatty acids (SCFAs) were measured using gas chromatography-mass spectrometry. Serum levels of tumour necrosis factor (TNF)-α, interleukin (IL)-6, IL-10, and immunoglobulin E (IgE) and the percentage of splenic CD4+ T cells were examined using enzyme-linked immunosorbent assay and flow cytometry, respectively. TMC3115 did not significantly affect body weight, and cause any severe systemic inflammation or other clinical symptoms among the neonatal or adult mice, although the crypt depths and Muc2-positive cells in some intestinal segments of neonatal mice were significantly lower than control. Oral TMC3115 administration significantly increased faecal microbial diversity, relative abundance of Bacteroidetes and caecal SCFAs production in neonatal mice. Following the intervention, neonatal mice treated with TMC3115 exhibited less increase in serum IgE levels induced by OVA in adults and significantly higher TNF-α and IL-10 levels than in control. Our findings indicate that the oral administration of bifidobacteria, particularly certain strains, such as TMC3115, during early life could alleviate the risk of IgE-mediated allergies in adult host animals. Modifications of intestinal microbiota, SCFAs metabolism and anti-inflammatory cytokine IL-10 production by bifidobacteria may at least in part be a key mechanism underlying the effect of bifidobacteria on the IgE-mediated immune sensitivity of hosts to attacks by allergens at both neonatal and adult stages.
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Affiliation(s)
- R Y Cheng
- 1 Department of Nutrition, Food Hygiene and Toxicology, West China School of Public Health, Sichuan University and Healthy Food Evaluation Research Center, Chengdu 610041, Sichuan, China P.R
| | - J R Yao
- 2 West China Second University Hospital/Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Sichuan University, Chengdu 610041, Sichuan, China P.R
| | - Q Wan
- 1 Department of Nutrition, Food Hygiene and Toxicology, West China School of Public Health, Sichuan University and Healthy Food Evaluation Research Center, Chengdu 610041, Sichuan, China P.R
| | - J W Guo
- 1 Department of Nutrition, Food Hygiene and Toxicology, West China School of Public Health, Sichuan University and Healthy Food Evaluation Research Center, Chengdu 610041, Sichuan, China P.R
| | - F F Pu
- 1 Department of Nutrition, Food Hygiene and Toxicology, West China School of Public Health, Sichuan University and Healthy Food Evaluation Research Center, Chengdu 610041, Sichuan, China P.R
| | - L Shi
- 3 Department of Clinical Nutrition, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China P.R
| | - W Hu
- 3 Department of Clinical Nutrition, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China P.R
| | - Y H Yang
- 4 Department of Planning, Hebei Inatural Biotech Co., Ltd. Shijiazhuang 050000, Hebei, China P.R
| | - L Li
- 5 Department of Research and Development, Hebei Inatural Biotech Co., Ltd. Shijiazhuang 050000, Hebei, China P.R
| | - M Li
- 1 Department of Nutrition, Food Hygiene and Toxicology, West China School of Public Health, Sichuan University and Healthy Food Evaluation Research Center, Chengdu 610041, Sichuan, China P.R
| | - F He
- 1 Department of Nutrition, Food Hygiene and Toxicology, West China School of Public Health, Sichuan University and Healthy Food Evaluation Research Center, Chengdu 610041, Sichuan, China P.R
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Wang Y, Wu HY, Zhao XC, Zhu WP, Wan Q, Lu YH, Jiang QW. [Evolutionary characteristics and positive selection site of hepatitis C virus isolated in intravenous drug users in Pudong new district, Shanghai]. Zhonghua Liu Xing Bing Xue Za Zhi 2017; 38:378-383. [PMID: 28329944 DOI: 10.3760/cma.j.issn.0254-6450.2017.03.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To understand the genotypes of hepatitis C virus (HCV) circulating in intravenous drug users (IDUs) in Pudong new district, Shanghai, and explore the population growth and selection pressure of the HCV strains isolated. Methods: A total of 200 serum specimens sampled from IDUs in local methadone maintenance treatment clinic in Pudong were used for amplification of a HCV NS5B 377-nt partial sequence. Mean evolutionary rate and effective number of infections were estimated based on the 377-nt partial sequences of the HCV strains isolated from IDUs and isolated contemporarily from local voluntary blood donors, men who have sex with men and reported hepatitis C cases by using BEAST software. Selection pressure sites were identified with online Datamonkey software for subsequent comparison with direct-acting antiviral (DAA) drug binding sites. Results: A total of 39 (19.5%) serum specimens were positive for HCV RNA. The genotypes were determined based on the HCV NS5B 377-nt partial sequences as follows: subtype 3a (n=14), 3b (n=13), 1b (n=7), 6a (n=4) and 6n (n=1). The partial sequences of the HCV strains isolated in IDUs shared high homology with the sequences of the HCV strains isolated in other populations. The Bayesian Skyline Plot indicated that the estimated infections with HCV subtype 1b increased exponentially during the 1990s, whereas that of subtypes 3a and 3b increased slowly since the mid-1990s. In the NS5B 377-nt partial sequences of the HCV strains isolated in IDUs, there were two positive selection sites and seventy-eight negative selection sites recognized. The mutation rate was as low as 2.2% in the 377-nt partial sequences corresponding to the known seven DAA drug binding sites. Conclusions: HCV subtype 3a and 3b were the predominant genotypes in the IDUs in Pudong. Subtype 1b was prevalent in different populations and evolved very rapidly, and more infections might be caused, suggesting further attention to its prevention, control and treatment. Although DAA treatment based on HCV NS5B binding sites targeting local IDUs might be effective, it is still necessary to strengthen the surveillance.
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Affiliation(s)
- Y Wang
- Key Laboratory of Public Health Safety, School of Public Health, Fudan University, Shanghai 200032, China
| | - H Y Wu
- Shanghai Pudong New District Center for Disease Control and Prevention, Shanghai 200120, China; Fudan University Pudong Institute of Preventive Medicine, Shanghai 200120, China
| | - X C Zhao
- Shanghai Pudong New District Center for Disease Control and Prevention, Shanghai 200120, China; Fudan University Pudong Institute of Preventive Medicine, Shanghai 200120, China
| | - W P Zhu
- Shanghai Pudong New District Center for Disease Control and Prevention, Shanghai 200120, China; Fudan University Pudong Institute of Preventive Medicine, Shanghai 200120, China
| | - Q Wan
- Shanghai Pudong New District Center for Disease Control and Prevention, Shanghai 200120, China; Fudan University Pudong Institute of Preventive Medicine, Shanghai 200120, China
| | - Y H Lu
- Key Laboratory of Public Health Safety, School of Public Health, Fudan University, Shanghai 200032, China; Fudan University Pudong Institute of Preventive Medicine, Shanghai 200120, China
| | - Q W Jiang
- Key Laboratory of Public Health Safety, School of Public Health, Fudan University, Shanghai 200032, China
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17
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Abstract
Our objective was to clarify the fate of the periodontal ligament (PDL) retained in the socket after tooth extraction, then determine if this tissue contributed to the osseointegration of "immediate" implants placed in these fresh extraction sockets. Mice underwent maxillary first molar extraction, the residual PDL was removed by an osteotomy, and titanium implants were placed. The osteotomy was created in such a way that the palatal surface was devoid of PDL remnants while the buccal, mesial, and distal surfaces retained PDL fibers. At multiple time points after surgery, tissues were analyzed using a battery of molecular, cellular, and histomorphometrical assays. We found that PDL remnants mineralized and directly contributed to new bone formation in the extraction site. Compared with regions of an extraction site where the PDL was removed by osteotomy, regions that retained PDL fibers had produced significantly more new bone. Around immediate implants, the retained PDL remnants directly contributed to new bone formation and osseointegration. Thus, we conclude that PDL remnants are inherently osteogenic, and if the tissue is healthy, it is reasonable to conclude that curetting out an extraction socket prior to immediate implant placement should be avoided. This recommendation aligns with contemporary trends toward minimally invasive surgical manipulations of the extraction socket prior to immediate implant placement.
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Affiliation(s)
- X Pei
- 1 State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,2 Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA
| | - L Wang
- 1 State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,2 Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA
| | - C Chen
- 2 Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA.,3 Craniofacial Research Center, Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Chang Gung University, College of Medicine, Taoyuan, Taiwan, ROC
| | - X Yuan
- 2 Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA
| | - Q Wan
- 1 State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - J A Helms
- 2 Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA
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Xu CS, Lu M, Liu LY, Yao MY, Cheng GL, Tian XY, Xiao F, Wan Q, Chen F. Chronic subdural hematoma management: clarifying the definitions of outcome measures to better understand treatment efficacy - a systematic review and meta-analysis. Eur Rev Med Pharmacol Sci 2017; 21:809-818. [PMID: 28272701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE A long history of inconsistencies in the definitions of the outcome measures for chronic subdural hematomas (CSDHs) has contributed to the controversy over the optimal surgical strategy for CSDH treatment. Clarifying these definitions, reassess the available data, and systematically review the prior literature may provide better insight into the differences in treatment efficacy for CSDH. MATERIALS AND METHODS The clinical course of CSDH was described with a series of strictly defined outcome measures. PubMed, Cochrane Library, and ScienceDirect databases were searched for comparative studies of two main surgical techniques for CSDH, including burr hole craniotomy (BHC) and twist drill craniotomy (TDC). Data were collected with uniform criteria and analyzed using a random-effects model to estimate the mortality, recurrence, operative failure, and cure rates of each treatment. RESULTS Twelve comparative studies that examined 2,027 CSDH patients were included. The analysis results indicated that TDC and BHC treatments were similar in the mortality rates (RR, 1.25; 95% CI, 0.83-1.87; I2 = 0%; p = 0.28) and the recurrence rates (RR, 1.29; 95% CI, 0.87-1.92; I2 = 13%; p = 0.21) for CSDH patients. However, TDC had a significantly higher operative failure rate compared with BHC (RR, 0.35; 95% CI, 0.15-0.83; I2 = 0%; p = 0.02), whereas patients treated by a TDC approach tended to achieve higher cure rates compared with BHC (RR, 0.92; 95% CI, 0.86-0.99; I2 = 55%; p = 0.02). CONCLUSIONS The clarification of the definitions related to CSDH outcome facilitates the interpretation of differences in treatment efficacy. The TDC approach manifested a significantly higher operative failure rate compared with the BHC approach; however, TDC showed a tendency in achieving a long-term neurologic cure.
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Affiliation(s)
- C-S Xu
- Department of Neurology, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, Jiangsu, China.
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19
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Abstract
Cellular metallic glasses (MGs) can be good candidates for structural and functional applications due to their light weight, enhanced ductility and excellent energy absorption performance.
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Affiliation(s)
- J. C. Zhang
- State Key Laboratory for Strength and Vibration of Mechanical Structures
- School of Aerospace Engineering
- Xi'an Jiaotong University
- Xi'an 710049
- China
| | - C. Chen
- State Key Laboratory of Mechanics and Control of Mechanical Structures
- Nanjing University of Aeronautics and Astronautics
- Nanjing 210016
- China
| | - Q. X. Pei
- Institute of High Performance Computing
- A*STAR
- Singapore
| | - Q. Wan
- Institute of System Engineering
- China Academy of Engineering Physics
- MianYang
- China
| | - W. X. Zhang
- State Key Laboratory for Strength and Vibration of Mechanical Structures
- School of Aerospace Engineering
- Xi'an Jiaotong University
- Xi'an 710049
- China
| | - Z. D. Sha
- International Center for Applied Mechanics
- State Key Laboratory for Strength and Vibration of Mechanical Structures
- Xi'an Jiaotong University
- Xi'an 710049
- China
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20
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Wang T, Lu J, Wang W, Mu Y, Zhao J, Liu C, Chen L, Shi L, Li Q, Yang T, Yan L, Wan Q, Wu S, Liu Y, Wang G, Luo Z, Tang X, Chen G, Huo Y, Gao Z, Su Q, Ye Z, Wang Y, Qin G, Deng H, Yu X, Shen F, Chen L, Zhao L, Xu M, Sun J, Bi Y, Lai S, Bloomgarden ZT, Li D, Ning G. Sleep duration and snoring associate with hypertension and glycaemic control in patients with diabetes. Diabet Med 2015; 32:1001-7. [PMID: 25996982 DOI: 10.1111/dme.12809] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/15/2015] [Indexed: 12/13/2022]
Abstract
AIMS Few studies have analysed the effect of sleep duration and snoring on hypertension and glycaemic control in patients with diabetes. This study aims to investigate the relationship of sleep duration and snoring on prevalent hypertension and glycaemic control in people with diabetes. METHODS In the baseline survey of the REACTION study, 56 032 patients with diabetes were categorized into four groups according to self-reported sleep duration: < 6, 6-7.9, 8-8.9 and ≥ 9 h. Snoring frequency was evaluated as 'usually', 'occasionally' or 'never'. Hypertension was assessed by systolic blood pressure, diastolic blood pressure, self-reported previous diagnosis and antihypertensive medications. 'Good' glycaemic control was defined as HbA1c < 53 mmol/mol (7.0%) and 'poor' glycaemic control as HbA1c ≥ 53 mmol/mol (7.0%). RESULTS Controlling for potential confounders and intermediates, sleep ≥ 9 h relative to intermediate sleep (6-7.9 h) was significantly associated with prevalent hypertension (OR: 1.25, 95% CI: 1.18-1.32) and poor glycaemic control (OR: 1.11, 95% CI: 1.05-1.18), and a U-shaped association was found between sleep duration and prevalent hypertension (P for quadratic trend = 0.019). Usually snoring was positively associated with prevalent hypertension (OR: 1.30, 95% CI: 1.23-1.37), whereas the association between snoring and poor glycaemic control was only on the borderline of statistical significance. CONCLUSIONS Compared with a sleep duration of 6-7.9 h, longer sleep duration was associated with a higher prevalence of hypertension and poor glycaemic control in people with diabetes. Moreover, the relationship between sleep duration and prevalent hypertension was U-shaped. These findings may propose important public health implications for diabetes management.
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Affiliation(s)
- T Wang
- State Key Laboratory of Medical Genomics, Key Laboratory for Endocrine and Metabolic Diseases of Ministry of Health, National Clinical Research Center for Metabolic Diseases, Collaborative Innovation Center of Systems Biomedicine and Shanghai Clinical Center for Endocrine and Metabolic Diseases, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - J Lu
- State Key Laboratory of Medical Genomics, Key Laboratory for Endocrine and Metabolic Diseases of Ministry of Health, National Clinical Research Center for Metabolic Diseases, Collaborative Innovation Center of Systems Biomedicine and Shanghai Clinical Center for Endocrine and Metabolic Diseases, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - W Wang
- State Key Laboratory of Medical Genomics, Key Laboratory for Endocrine and Metabolic Diseases of Ministry of Health, National Clinical Research Center for Metabolic Diseases, Collaborative Innovation Center of Systems Biomedicine and Shanghai Clinical Center for Endocrine and Metabolic Diseases, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Y Mu
- Chinese People's Liberation Army General Hospital, Beijing, China
| | - J Zhao
- Shandong Provincial Hospital affiliated to Shandong University, Jinan, China
| | - C Liu
- Jiangsu Province Hospital on Integration of Chinese and Western Medicine, Nanjing, China
| | - L Chen
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - L Shi
- Affiliated Hospital of Guiyang Medical College, Guiyang, China
| | - Q Li
- The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - T Yang
- The First Affiliated Hospital with Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China
| | - L Yan
- Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Q Wan
- The Affiliated Hospital of Luzhou Medical College, Luzhou, China
| | - S Wu
- Karamay Municipal People's Hospital, Xinjiang, China
| | - Y Liu
- The First Hospital of Jilin University, Changchun, China
| | - G Wang
- The First Hospital of Jilin University, Changchun, China
| | - Z Luo
- The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - X Tang
- The First Hospital of Lanzhou University, Lanzhou, China
| | - G Chen
- Fujian Provincial Hospital, Fujian Medical University, Fuzhou, China
| | - Y Huo
- Jiangxi People's Hospital, Nanchang, China
| | - Z Gao
- Dalian Municipal Central Hospital, Dalian, China
| | - Q Su
- Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Z Ye
- Zhejiang Provincial Center for Disease Control and Prevention, Zhejiang, China
| | - Y Wang
- The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - G Qin
- The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - H Deng
- The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - X Yu
- Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - F Shen
- The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - L Chen
- Qilu Hospital, University of Shandong School of Medicine, Jinan, China
| | - L Zhao
- State Key Laboratory of Medical Genomics, Key Laboratory for Endocrine and Metabolic Diseases of Ministry of Health, National Clinical Research Center for Metabolic Diseases, Collaborative Innovation Center of Systems Biomedicine and Shanghai Clinical Center for Endocrine and Metabolic Diseases, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - M Xu
- State Key Laboratory of Medical Genomics, Key Laboratory for Endocrine and Metabolic Diseases of Ministry of Health, National Clinical Research Center for Metabolic Diseases, Collaborative Innovation Center of Systems Biomedicine and Shanghai Clinical Center for Endocrine and Metabolic Diseases, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - J Sun
- State Key Laboratory of Medical Genomics, Key Laboratory for Endocrine and Metabolic Diseases of Ministry of Health, National Clinical Research Center for Metabolic Diseases, Collaborative Innovation Center of Systems Biomedicine and Shanghai Clinical Center for Endocrine and Metabolic Diseases, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Y Bi
- State Key Laboratory of Medical Genomics, Key Laboratory for Endocrine and Metabolic Diseases of Ministry of Health, National Clinical Research Center for Metabolic Diseases, Collaborative Innovation Center of Systems Biomedicine and Shanghai Clinical Center for Endocrine and Metabolic Diseases, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - S Lai
- Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | | | - D Li
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - G Ning
- State Key Laboratory of Medical Genomics, Key Laboratory for Endocrine and Metabolic Diseases of Ministry of Health, National Clinical Research Center for Metabolic Diseases, Collaborative Innovation Center of Systems Biomedicine and Shanghai Clinical Center for Endocrine and Metabolic Diseases, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Sun JC, Xu M, Lu JL, Bi YF, Mu YM, Zhao JJ, Liu C, Chen LL, Shi LX, Li Q, Yang T, Yan L, Wan Q, Wu SL, Liu Y, Wang GX, Luo ZJ, Tang XL, Chen G, Huo YN, Gao ZN, Su Q, Ye Z, Wang YM, Qin GJ, Deng HC, Yu XF, Shen FX, Chen L, Zhao LB, Wang TG, Lai SH, Li DH, Wang WQ, Ning G. Associations of depression with impaired glucose regulation, newly diagnosed diabetes and previously diagnosed diabetes in Chinese adults. Diabet Med 2015; 32:935-43. [PMID: 25439630 DOI: 10.1111/dme.12649] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [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] [Accepted: 11/25/2014] [Indexed: 12/29/2022]
Abstract
AIM To examine the association between depression and impaired glucose regulation, newly diagnosed diabetes and previously diagnosed diabetes in middle-aged and elderly Chinese people, and whether depression was associated with different treatment regimens or durations of diabetes. METHODS A cross-sectional study was performed among 229,047 adults living in the community aged ≥ 40 years from 25 centres in China. The self-reported depression rating scale Patient Health Questionnaire 9 (PHQ-9) was used to diagnose probable and sub-threshold depression. Glucose metabolism status was determined according to World Health Organization 1999 diagnostic criteria. RESULTS The numbers of participants with normal glucose regulation, impaired glucose regulation, newly diagnosed diabetes and previously diagnosed diabetes were 120,458, 59,512, 24,826 and 24,251, respectively. The prevalence of sub-threshold depression in the total sample of participants was 4.8% (4.8%, 4.8%, 4.4% and 5.6% from normal glucose regulation to previously diagnosed diabetes, respectively), and the prevalence of probable depression was 1.1% (1.1%, 1.0%, 0.9% and 1.8% from normal glucose regulation to previously diagnosed diabetes, respectively). Compared with participants with normal glucose regulation, those with previously diagnosed diabetes had increased odds of probable depression [odds ratio (OR) = 1.61, 95% confidence interval (CI) 1.39-1.87] and sub-threshold depression (OR = 1.14, 95% CI 1.06-1.24), after adjustment for multiple confounding factors. Newly diagnosed diabetes or impaired glucose regulation was not associated with depression. Among those with previously diagnosed diabetes, insulin treatment was associated with greater odds of depression compared with no treatment or oral anti-diabetic medicine. CONCLUSION Previously diagnosed diabetes, but not newly diagnosed diabetes or impaired glucose regulation, was associated with a higher prevalence of depression. Patients receiving insulin were more likely to have depression than those not receiving treatment or being treated with oral anti-diabetic medicine.
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Affiliation(s)
- J C Sun
- Laboratory of Endocrine and Metabolic Diseases, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, and Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - M Xu
- Department of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - J L Lu
- Department of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Y F Bi
- Department of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Y M Mu
- People's Liberation Army General Hospital, Beijing, China
| | - J J Zhao
- Shandong Provincial Hospital, Jinan, China
| | - C Liu
- Jiangsu Province Hospital on Integration of Chinese and Western Medicine, Nanjing, China
| | - L L Chen
- Wuhan Xiehe Hospital, Huazhong University of Science and Technology School of Medicine, Wuhan, China
| | - L X Shi
- Affiliated Hospital of Guiyang Medical College, Guiyang, China
| | - Q Li
- The Second Affilliated Hospital of Haerbin Medical University, Haerbin, China
| | - T Yang
- The First Affiliated Hospital with Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China
| | - L Yan
- Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Q Wan
- The Affiliated Hospital of Luzhou Medical College, Luzhou, China
| | - S L Wu
- Xinjiang Kelamayi Peoples Hospital, Kelamayi, China
| | - Y Liu
- The First Hospital of Jilin University, Changchun, China
| | - G X Wang
- The First Hospital of Jilin University, Changchun, China
| | - Z J Luo
- The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - X L Tang
- The First Hospital of Lanzhou University, Lanzhou, China
| | - G Chen
- Fujian Provincial Hospital, Fujian Medical University, Fuzhou, China
| | - Y N Huo
- Jiangxi Peoples Hospital, Nanchang, China
| | - Z N Gao
- Dalian Municipal Central Hospital, Dalian, China
| | - Q Su
- Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Z Ye
- Zhejiang Center for Disease Control and Prevention, Hangzhou, China
| | - Y M Wang
- The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - G J Qin
- The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - H C Deng
- The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - X F Yu
- Wuhan Tongji Hospital, Huazhong University of Science and Technology School of Medicine, Wuhan, China
| | - F X Shen
- The First Affiliated Hospital of Wenzhou Medical University, The First Provincial Wenzhou Hospital of Zhejiang, Wenzhou, China
| | - L Chen
- Qilu Hospital, University of Shandong School of Medicine, Jinan, China
| | - L B Zhao
- Department of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - T G Wang
- Department of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - S H Lai
- Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - D H Li
- Department of Gastrointestinal Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, >TX, USA
| | - W Q Wang
- Department of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - G Ning
- Laboratory of Endocrine and Metabolic Diseases, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, and Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Wan Q, Lin C, Li X, Zeng W, Ma C. MRI assessment of paraspinal muscles in patients with acute and chronic unilateral low back pain. Br J Radiol 2015; 88:20140546. [PMID: 26105517 DOI: 10.1259/bjr.20140546] [Citation(s) in RCA: 102] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE To investigate the changes in paraspinal muscle cross-sectional area (CSA) and composition, using the digital data from lumbar spine MRIs of patients with acute and chronic low back pain (LBP). METHODS In total, 178 patients with unilateral LBP who had lumbar MRI examination were recruited. The data were obtained by a retrospective documentation audit. The CSAs and mean signal intensities of the bilateral paraspinal muscles [psoas major (PM), quadratus lumborum, multifidus (MF) and erector spinae (ES)] were measured, and the percentage of fat infiltration was calculated. The data between the painful side and non-painful side were compared, and between-group comparisons were tested. 42 patients with chronic unilateral LBP could indicate the problem level, and the CSA and mean signal intensity of the MF muscle were analysed at the problem level, and one vertebral above and one vertebral level below the problem level. RESULTS The CSAs of the PM and ES muscles were significantly decreased in the acute LBP group, while in the chronic LBP group, significant reduction in CSA was found in the MF and ES muscles on the painful side compared with the non-painful side. The mean signal intensity and fat content of the ES muscle on the painful side in the chronic LBP group was significantly higher than that on the painful side in the acute LBP group. The significant decrease of CSA in the MF muscle was found at multiple levels on the painful side. CONCLUSION The present findings show that there is selective ipsilateral atrophy of paraspinal muscles, specific to the symptomatic side, in patients with acute and chronic LBP. The reduction of the muscle CSA and increased fatty infiltration occurred synchronously, and the extent of change is significantly greater in chronic LBP in the ES muscle. Atrophy of the MF muscle appears to be at multiple levels but side specific in relation to symptoms in patients with chronic LBP, and the decreased muscle CSA may occur prior to fatty infiltration. ADVANCES IN KNOWLEDGE There are specific paraspinal muscles undergoing atrophy and fatty infiltration in patients with acute and chronic LBP on the symptomatic side. The CSA of the MF muscle decreased at multiple levels on the symptomatic side in patients with chronic unilateral LBP, which may occur prior to fatty infiltration.
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Affiliation(s)
- Q Wan
- 1 Department of Rehabilitation Medicine, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - C Lin
- 1 Department of Rehabilitation Medicine, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - X Li
- 1 Department of Rehabilitation Medicine, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - W Zeng
- 2 Department of Radiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - C Ma
- 1 Department of Rehabilitation Medicine, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
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Fernandes J, Ribeiro S, Garrido P, Sereno J, Costa E, Reis F, Santos-Silva A, Hirata M, Tashiro Y, Aizawa K, Endo K, Fujimori A, Morikami Y, Okada S, Kumei M, Mizobuchi N, Sakai M, Claes K, Di Giulio S, Galle J, Guerin A, Kiss I, Suranyi M, Winearls C, Wirnsberger G, Farouk M, Manamley N, Addison J, Herlitz H, Visciano B, Nazzaro P, Riccio E, Del Rio A, Mozzillo GR, Pisani A, Gupta A, Ikizler TA, Lin V, Guss C, Pratt RD, Stewart VM, Anthoney A, Blenkin S, Ahmed S, Yasumoto M, Tsuda A, Ishimura E, Ohno Y, Ichii M, Nakatani S, Mori K, Fukumoto S, Uchida J, Emoto M, Nakatani T, Inaba M, Joki N, Tanaka Y, Kubo S, Asakawa T, Hase H, Ikeda M, Inaguma D, Sakaguchi T, Shinoda T, Koiwa F, Negi S, Yamaka T, Shigematsu T, Inaguma D, Suranyi MG, Claes K, Di Giulio S, Galle J, Kiss I, Winearls C, Wirnsberger G, Farouk M, Manamley N, Addison J, Herlitz H, Guerin A, Groenendaal-Van De Meent D, Den Adel M, Rijnders S, Essers H, Golor G, Haffner S, Schaddelee M, Hirata M, Tashiro Y, Yogo K, Aizawa K, Endo K, Choukroun G, Hannedouche T, Kessler M, Laville M, Levannier M, Mignon F, Rostaing L, Rottembourg J, Jeon J, Park Y, Karanth S, Prabhu R, Bairy M, Nagaraju SP, Bhat A, Kosuru S, Parthasarathy R, Kamath S, Prasad HK, Kallurwar KP, Nishida H, Iimori S, Okado T, Rai T, Uchida S, Sasaki S, Wan Q, Cana Ruiu DC, Ashcroft R, Brown C, Williams J, Mikhail A. CKD ANAEMIA. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Monova D, Monov S, Todorov T, Soderberg D, Kurz T, Weiner M, Eriksson P, Segelmark M, Jakuszko K, Sebastian A, Bednarz Z, Krajewska M, Wiland P, Madziarska K, Weyde W, Klinger M, Naidoo J, Wearne N, Jones E, Swanepoel C, Rayner B, Okpechi I, Endo N, Tsuboi N, Furuhashi K, Matsuo S, Maruyama S, Clerte M, Levi C, Touzot M, Fakhouri F, Monge C, Lebas C, Abboud I, Huart A, Durieux P, Charlin E, Thervet E, Karras A, Smykal-Jankowiak K, Niemir ZI, Polcyn-Adamczak M, Whatmough S, Sweeney N, Fernandez S, Hussain M, Dhaygude A, Jakuszko K, Bednarz Z, Sebastian A, Krajewska M, Gniewek K, Wiland P, Weyde W, Klinger M, Manenti L, Urban ML, Vaglio A, Gintoli E, Galletti M, Buzio C, Monova D, Monov S, Argirova T, Wong I, Ibrahim FH, Goh BL, Lim TS, Chan MW, Hiramtasu R, Ubara Y, Hoshino J, Takaichi K, Ghafoor V, Hussain M, Dhaygude A, Whatmough S, Fernandez S, Sweeney N, Hussain M, Dhaygude A, Sahay M, Soma J, Nakaya I, Sasaki N, Yoshikawa K, Sato H, Kaminskyy V, ZAbi Ska M, Krajewska M, Ko Cielska-Kasprzak K, Jakuszko K, Klinger M, Niemir Z, Wozniczka K, Swierzko A, Cedzynski M, Polcyn-Adamczak M, Sokolowska A, Szala A, Arjunan A, Mikhail A, Shrivastava R, Parker C, Aithal S, Gursu M, Ozari M, Yucetas E, Sumnu A, Doner B, Cebeci E, Ozkan O, Aktuglu MB, Karaali Z, Koldas M, Ozturk S, Marco H, Picazo M, Da Silva I, Gonzalez A, Arce Y, Gracia S, Corica M, Llobet J, Diaz M, Ballarin J, Schonermarck U, Hagele H, Baumgartner A, Fischereder M, Muller S, Oliveira CBL, Oliveira ASA, Carvalho CJB, Pessoa CTBC, Sette LHBC, Fernandes GV, Cavalcante MAGM, Valente LM, Wan Q, Hu H, He Y, Li T, Aazair N, Houmaid Z, Rhair A, Bennani N, Demin A, Petrova O, Kotova O, Demina L, Roccatello D, Sciascia S, Rossi D, Naretto C, Baldovino S, Alpa M, Salussola I, Modena V, Zakharova EV, Vinogradova OV, Stolyarevich ES, Yap DYH, Chan TM, Thanaraj V, Dhaygude A, Ponnusamy A, Pillai S, Argentiero L, Schena A, Rossini M, Manno C, Castellano G, Martino M, Mitrotti A, Giliberti M, Digiorgio C, Di Palma AM, Battaglia M, Ditonno P, Grandaliano G, Gesualdo L, Oliveira CBL, Carvalho CJB, Oliveira ASA, Pessoa CTBC, Sette LHBC, Fernandes GV, Cavalcante MAGM, Valente LM, Neprintseva N, Tchebotareva N, Bobkova I, Kozlovskaya L, Rabrenovi V, Kova Evi Z, Jovanovi D, Rabrenovi M, Anti S, Ignjatovi L, Petrovi M, Longhi S, Del Vecchio L, Vigano S, Casartelli D, Bigi MC, Corti M, Limardo M, Tentori F, Pontoriero G, Zeraati AA, Shariati Sarabi Z, Davoudabadi Farahani A, Mirfeizi Z, Bae E. PRIMARY AND SECONDARY GLOMERULONEPHRITIDES 2. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Bornstein J, McCullough K, Combe C, Bieber B, Jadoul M, Pisoni R, Mariani L, Robinson B, Saito A, Sen A, Tentori F, Guinsburg A, Marelli C, Marcelli D, Usvyat L, Maddux D, Canaud B, Kotanko P, Hwang SJ, Hsieh HM, Chen HF, Mau LW, Lin MY, Hsu CC, Yang WC, Pitcher D, Rao A, Phelps R, Canaud B, Barbieri C, Marcelli D, Bellocchio F, Bowry S, Mari F, Amato C, Gatti E, Zitt E, Hafner-Giessauf H, Wimmer B, Herr A, Horn S, Friedl C, Sprenger-Maehr H, Kramar R, Rosenkranz AR, Lhotta K, Ferris M, Marcelli D, Marelli C, Etter M, Xu X, Grassmann A, Von Gersdorff GD, Pecoits-Filho R, Sylvestre L, Kotanko P, Usvyat L, Consortium M, Dzekova-Vidimliski P, Nikolov I, Trajceska L, Selim G, Gelev S, Matevska Geshkovska N, Dimovski A, Sikole A, Suleymanlar G, Utas C, Ecder T, Ates K, Bieber B, Robinson BM, Pisoni RL, Laplante S, Liu FX, Culleton B, Tomilina N, Bikbov B, Andrusev A, Zemchenkov A, Bieber B, Robinson BM, Pisoni RL, Bikbov B, Tomilina N, Kotenko O, Andrusev A, Panaye M, Jolivot A, Lemoine S, Guebre-Egziabher F, Doret M, Juillard L, Filiopoulos V, Hadjiyannakos D, Papakostoula A, Takouli L, Biblaki D, Dounavis A, Vlassopoulos D, Bikbov B, Tomilina N, Al Wakeel J, Bieber B, Al Obaidli AA, Ahmed Almaimani Y, Al-Arrayed S, Alhelal B, Fawzy A, Robinson BM, Pisoni RL, Aucella F, Girotti G, Gesuete A, Cicchella A, Seresin C, Vinci C, Scaparrotta G, Naso A, Pilotto A, Hoffmann TR, Flusser V, Santoro LF, Almeida FA, Aucella F, Girotti G, Gesuete A, Cicchella A, Seresin C, Vinci C, Scaparrotta G, Ganugi S, Gnerre T, Russo GE, Amato M, Naso A, Pilotto A, Trigka K, Douzdampanis P, Chouchoulis K, Mpimpi A, Kaza M, Pipili C, Kyritsis I, Fourtunas C, Ortalda V, Tomei P, Ybarek T, Lupo A, Torreggiani M, Esposito V, Catucci D, Arazzi M, Colucci M, Montagna G, Semeraro L, Efficace E, Piazza V, Picardi L, Esposito C, Hekmat R, Mohebi M, Ahmadzadehhashemi S, Park J, Hwang E, Jang M, Park S, Resende LL, Dantas MA, Martins MTS, Lopes GB, Lopes AA, Engelen W, Elseviers M, Gheuens E, Colson C, Muyshondt I, Daelemans R, He Y, Chen J, Luan S, Wan Q, Cuoghi A, Bellei E, Monari E, Bergamini S, Tomasi A, Atti M, Caiazzo M, Palladino G, Bruni F, Tekce H, Ozturk S, Aktas G, Kin Tekce B, Erdem A, Uyeturk U, Ozyasar M, Taslamacioglu Duman T, Yazici M, Schaubel DE, McCullough KP, Morgenstern H, Gallagher MP, Hasegawa T, Pisoni RL, Robinson BM, Nacak H, Van Diepen M, Suttorp MM, Hoorn EJ, Rotmans JI, Dekker FW, Speyer E, Beauger D, Gentile S, Isnard Bagnis C, Caille Y, Baudelot C, Mercier S, Jacquelinet C, Briancon S, Sosorburam T, Baterdene B, Delger A, Daelemans R, Gheuens E, Engelen W, De Boeck K, Marynissen J, Bouman K, Mann M, Exner DV, Hemmelgarn BR, Hanley D, Ahmed SB. DIALYSIS. EPIDEMIOLOGY, OUTCOME RESEARCH, HEALTH SERVICES 2. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu178] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Zeng J, Wan Q, Bai X, Li X, Liu F, Li C, Liu X, Wang Y. Prevalence and risk factors of overweight and obesity among individuals over 40 years old in Luzhou city. Genet Mol Res 2014; 13:9262-70. [DOI: 10.4238/2014.may.16.14] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Yayar O, Buyukbakkal M, Eser B, Yildirim T, Ercan Z, Erdogan B, Kali A, Merhametsiz O, Haspulat A, Akdag I, Ayli MD, Quach T, Tregaskis P, Menahem S, Koukounaras J, Mott N, Walker R, Zeiler M, Santarelli S, Degano G, Monteburini T, Agostinelli RM, Marinelli R, Ceraudo E, Grzelak T, Kramkowska M, Walczak M, Czyzewska K, Guney I, Turkmen K, Yazici R, Arslan S, Altintepe L, Yeksan M, Vaduva C, Popa S, Mota M, Mota E, Wan Md Adnan WAH, Zaharan NL, Moreiras-Plaza M, Blanco-Garcia R, Beato-Coo L, Cossio-Aranibar C, Martin-Baez I, Santos MT, Fonseca I, Santos O, Aguiar P, Rocha MJ, Carvalho MJ, Cabrita A, Rodrigues A, Guo Z, Lai X, Theodoridis M, Panagoutsos S, Thodis E, Karanikas M, Mitrakas A, Kriki P, Kantartzi K, Passadakis P, Vargemezis V, Vakilzadeh N, Pruijm M, Burnier M, Halabi G, Azevedo P, Santos O, Carvalho M, Cabrita A, Rodrigues A, Laplante S, Rutherford P, Shutov E, Isachkina A, Gorelova E, Troya MI, Teixido J, Pedreira G, Del Rio M, Romero R, Bonet J, Zhang X, Ma J, Kim Y, Kim JK, Song YR, Kim SG, Kim HJ, Eloot S, Vanholder R, Van Biesen W, Heaf J, Pedersen C, Elgborn A, Arabaci T, Emrem G, Keles M, Kizildag A, Martino F, Amici G, Rodighiero MP, Crepaldi C, Ronco C, Tanaka H, Tsuneyoshi S, Yamasaki K, Daijo Y, Tatsumoto N, Al-Hilali N, Hussain N, Fathy V, Negm H, Alhilali M, Grzegorzewska A, Cieszynski K, Kaczmarek A, Sowinska A, Soleymanian T, Najafi I, Ganji MR, Ahmadi F, Saddadi F, Hakemi M, Amini M, Tong LNMN, Yongcheng HNMN, Qijun WNMN, Shaodong LNMN, Velioglu A, Albaz M, Arikan H, Tuglular S, Ozener C, Bakirdogen S, Eren N, Mehtap O, Bek SG, Cekmen MB, Yilmaz A, Cabana Carcasi MLL, Fernandez Ferreiro A, Fidalgo Diaz M, Becerra Mosquera V, Alonso Valente R, Buttigieg J, Borg Cauchi A, Rogers M, Buhagiar L, Farrugia Agius J, Vella MP, Farrugia E, Han JH, Kim HR, Ko KI, Kim CH, Koo HM, Doh FM, Lee MJ, Oh HJ, Han SH, Yoo TH, Kang SW, Choi KH, Sikorska D, Frankiewicz D, Klysz P, Schwermer K, Hoppe K, Nealis J, Kaczmarek J, Baum E, Wanic-Kossowska M, Pawlaczyk K, Oko A, Hiss M, Gerstein F, Haller H, Gueler F, Fukasawa M, Manabe T, Wan Q, He Y, Zhu D, Li J, Xu H, Yayar O, Eser B, Buyukbakkal M, Ercan Z, Erdogan B, Merhametsiz O, Yildirim T, Kali A, Haspulat A, Oztemel A, Akdag I, Ayli MD, Pilcevic D, Kovacevic Z, Maksic D, Paunic Z, Tadic-Pilcevic J, Mijuskovic M, Petrovic M, Obrencevic K, Rabrenovic V, Ignjatovic L, Terzic B, Jovanovic D, Chang CH, Chang YS, Busuioc M, Guerraoui A, Caillette-Beaudoin A, Bahte SK, Hiss M, Kielstein JT, Polinder-Bos H, Emmelot-Vonk M, Gaillard C. Peritoneal dialysis II. Nephrol Dial Transplant 2013. [DOI: 10.1093/ndt/gft145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Denney-Wilson E, Vagholkar S, Wan Q, McKenzie S, Harris M. Patient characteristics and outcomes of weight management advice in primary care. Obes Res Clin Pract 2011. [DOI: 10.1016/j.orcp.2011.08.090] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Wan Q, Wang F, Wang F, Guan Q, Liu Y, Wang C, Feng L, Gao G, Gao L, Zhao J. Regression to normoglycaemia by fenofibrate in pre-diabetic subjects complicated with hypertriglyceridaemia: a prospective randomized controlled trial. Diabet Med 2010; 27:1312-7. [PMID: 20968112 DOI: 10.1111/j.1464-5491.2010.03107.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [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] [Indexed: 01/06/2023]
Abstract
AIMS Lipotoxicity has recently been shown to be an important risk factor underlying the pathogenesis of pre-diabetes. However, clinical evidence supporting the treatment of pre-diabetes by improving lipotoxicity is lacking. Here, we conducted an open-label, randomized, controlled trial to investigate whether fenofibrate, the widely used hypolipidaemic agent, might benefit pre-diabetes, with metformin and diet control, the recommended intervention methods, as positive controls. METHODS Newly diagnosed pre-diabetes patients (n = 120) with hypertriglyceridaemia (plasma triglyceride levels between 1.8 and 4.5 mmol/l) were randomly assigned by computer-generated randomization sequence to either control group (no intervention), fenofibrate group (200 mg once a day), metformin group (500 mg three times a day) or diet-controlled group (diet recommendation). Plasma biochemistry examination was performed every 2 months. The primary endpoint was the outcome of the natural course of pre-diabetes, evaluated by oral glucose tolerance test after 6-month follow-up. RESULTS Twenty subjects in the fenofibrate group, 24 subjects in the metformin group and 25 subjects in both the diet-controlled group and the control group finished the trial. Fenofibrate, metformin and diet control had protective effects on hypertriglyceridaemic pre-diabetes, evidenced by 53.3, 70 and 30% participants regressed to normoglycaemia, respectively. The effects of fenofibrate and metformin were comparable (P > 0.05), while diet control was less effective (P < 0.05). Liver damage occurred in six subjects in the fenofibrate group and gastrointestinal symptoms occurred in four subjects in the metformin group. No serious adverse events occurred. CONCLUSION Controlling lipotoxicity by fenofibrate could effectively ameliorate the natural course of hypertriglyceridaemic pre-diabetes.
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Affiliation(s)
- Q Wan
- Department of Endocrinology, Shandong Provincial Hospital/Shandong University. Institute of Endocrinology and Metabolic Diseases, Shandong Academy of Clinical Medicine, 324 Jingwu Road, Shandong, China
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Wang SX, Song JX, Li GH, Wu Y, Zhang L, Wan Q, Streets DG, Chin CK, Hao JM. Estimating mercury emissions from a zinc smelter in relation to China's mercury control policies. Environ Pollut 2010; 158:3347-53. [PMID: 20716469 DOI: 10.1016/j.envpol.2010.07.032] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2010] [Revised: 07/17/2010] [Accepted: 07/24/2010] [Indexed: 05/04/2023]
Abstract
Mercury concentrations of flue gas at inlet/outlet of the flue gas cleaning, electrostatic demister, reclaiming tower, acid plant, and mercury contents in zinc concentrate and by-products were measured in a hydrometallurgical zinc smelter. The removal efficiency of flue gas cleaning, electrostatic demister, mercury reclaiming and acid plant was about 17.4%, 30.3%, 87.9% and 97.4% respectively. Flue gas cleaning and electrostatic demister captured 11.7% and 25.3% of the mercury in the zinc concentrate, respectively. The mercury reclaiming tower captured 58.3% of the mercury in the zinc concentrate. About 4.2% of the mercury in the zinc concentrate was captured by the acid plant. Consequently, only 0.8% of the mercury in the zinc concentrate was emitted to the atmosphere. The atmospheric mercury emission factor was 0.5 g t(-1) of zinc produced for the tested smelter, indicating that this process offers the potential to effectively reduce mercury emissions from zinc smelting.
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Affiliation(s)
- S X Wang
- Department of Environmental Science and Engineering, and State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing 100084, China
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Meng B, Feng XB, Chen CX, Qiu GL, Sommar J, Guo YN, Liang P, Wan Q. Influence of eutrophication on the distribution of total mercury and methylmercury in hydroelectric reservoirs. J Environ Qual 2010; 39:1624-1635. [PMID: 21043268 DOI: 10.2134/jeq2009.0440] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The distribution of mercury (Hg) and the characteristics of its methylation were investigated in Wujiangdu (WJD) and Yinzidu (YZD) reservoirs in Guizhou province, China. The two reservoirs are characterized by high and low levels of primary productivity, respectively. Mercury species in water samples from depth profiles in both reservoirs and from interface water in the WJD were analyzed each season during 2007. The concentrations of total Hg (HgT(unf)) and methylmercury (MeHgT(unf)) in unfiltered water samples from the WJD varied from 3.0 to 18 pmol dm(-3) and from 0.17 to 15 pmol dm(-3), respectively; ranges were 2.0 to 9.5 pmol dm(-3) for HgT(unf) and 0.14 to 2.2 pmol dm(-3) for MeHgT(unf) in the YZD. Elevated methylmercury concentrations in water samples from the bottom water and water-sediment interface demonstrated an active net Hg methylation in the downstream reach of the WJD. There was no discernable Hg methylation occurring in the YZD, nor in the upstream and middle reaches of the WJD. The results suggest that high primary productivity resulting from cage aquaculture activities in the WJD is an important control on Hg methylation in the reservoir, increasing the concentrations of MeHg in water in the Wujiang River basin Southwestern China.
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Affiliation(s)
- Bo Meng
- Chinese Academy of Sciences, Graduate University of Chinese Academy of Sciences
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Wan Q, Harris M, Zwar N, Vagholkar S, Kemp L, Campbell T. Experience in implementation of cardiovascular absolute risk assessment and management in Australian general practice. Int J Clin Pract 2010; 64:1166-7. [PMID: 20642716 DOI: 10.1111/j.1742-1241.2010.02403.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Wu H, Kobayashi T, Wan Q, Shi W, Qian H, Cui X, Li W. Effects of surfactant replacement on alveolar overdistension and plasma cytokines in ventilator-induced lung injury. Acta Anaesthesiol Scand 2010; 54:354-61. [PMID: 19764904 DOI: 10.1111/j.1399-6576.2009.02124.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Overdistension of the lung causes ventilator-induced lung injury (VILI) accompanied by surfactant abnormalities and inflammatory changes. We investigated the effects of surfactant replacement on overdistension of the terminal airspaces and plasma cytokine levels in VILI. METHODS VILI was induced by high-pressure ventilation (HPV) in rats anesthetized with pentobarbital, followed by ventilation for 2 h in the maintenance mode (tidal volume=10 ml/kg, positive end-expiratory pressure = 7.5 cmH(2)O) with or without surfactant replacement. The sizes of the terminal airspaces were determined after fixing the lungs at an airway pressure of 10 cmH(2)O on deflation. Cytokine levels were assessed by enzyme-linked immunosorbent assay. RESULTS The mean ratio of the largest terminal airspace size class (> or = 64,000 microm(2)) was increased from 13.4% to 32.0% by HPV (P<0.05). After maintenance-mode ventilation, the ratio decreased to 16.1% with surfactant replacement (P<0.05), but increased to 44.6% without surfactant replacement (P<0.05). Mean macrophage inflammatory protein-2 (MIP-2) levels in the plasma increased from <0.02 to 6.9 ng/ml with HPV (P<0.05), and further increased to > or = 11.8 ng/ml, regardless of surfactant replacement after maintenance-mode ventilation. Similar tendencies were observed in the interleukin (IL)-6 and IL-10 levels. Tumor necrosis factor-alpha levels were almost negligible during the experiment. CONCLUSION In rats with VILI, surfactant replacement reversed overdistension of the terminal airspaces that may induce barotrauma, but not upregulation of MIP-2, IL-6, and IL-10 within 2 h.
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Affiliation(s)
- H Wu
- Department of Anesthesiology, Second Affiliated Hospital, Harbin Medical University, Harbin 150086, China
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Abstract
Murine experimental autoimmune thyroiditis (EAT) is a well established model of autoimmune disease initiated by immunization with thyroglobulin. We have previously analyzed the T cell receptor (TcR) V gene families used by the intrathyroidal lymphocytic infiltrate in CBA/J mice with well established thyroiditis EAT and have implicated T cells expressing the mTcR V beta 13 gene family. We have now proceeded to examine the time course of mTcR V gene family use following immunization with mTg. We used a radiolabelled RT-PCR technique with oligonucleotides detecting 17 mouse TcR V beta gene families to examine the heterogeneity of the amplified V-D-J (CDR3) fragments. As previously, the TcR V beta 13 amplifications showed the expression of two similar homogeneous CDR3 sizes consistent with two clonally expanded T cell populations. However, such T cell clonal expansion was observed to peak at day 25 and by 90 days had markedly diminished despite the continuing presence of extensive histologic infiltration. An additional immunization with mTg at 63 days failed to maintain the mTcR V beta 13 clonal presence. Further confirmation of these observations was obtained by direct analysis of intrathyroidal T cells rescued from mice with EAT. Such intrathyroidal T cells, 25 days after mTg, demonstrated a marked increase in mTcR V13 expressing T cells to 9.4% compared to 2% of T cells in peripheral blood. It appeared, therefore, that in EAT the accumulation of V13 expressing T cells was a transient phenomenon which peaked at 25 days after immunization. The persistence of an intrathyroidal infiltration indicated that such T cells must have been accompanied by the accumulation and recruitment of additional selected bystander T cells. Such non-specific T cells may also have an integral role in the progression of autoimmune thyroiditis.
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Affiliation(s)
- M Nakashima
- Department of Medicine, Mount Sinai School of Medicine, New York, New York, USA
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Wan Q. Clinical and patient subjective evaluation of different reconstruction methods in mandibular defects. Int J Oral Maxillofac Surg 2009. [DOI: 10.1016/j.ijom.2009.03.654] [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: 11/28/2022]
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Azizi F, Wan Q, Radivoyevitch T, Dealwis C, Mastrangelo CH. A combinatorial multicomponent plug mixer for systems chemistry. Micro Total Anal Syst 2008; 2008:1904-1906. [PMID: 20414459 PMCID: PMC2857516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
We report the construction and testing of a combinatorial multicomponent plug mixer (CMPM) chip that generates a large number of mix ratios. The CMPM chip has been designed to study ribonucleotide reductase (RNR) protein-protein/protein-ligand interaction networks. The 4-component chip is capable of 5400 different combinations in a 30 plug cycle. CMPM chips were tested producing fluorescent dye and dihydrofolate reductase NADPH/MX mixtures with plug lengths of 2 mm.
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Zhang HB, Jiang WK, Wan Q, Liao CJ. The Application of Wave Superposition Algorithm to Identify Cyclostationary Sound Source. ACTA ACUST UNITED AC 2008. [DOI: 10.3813/aaa.918079] [Citation(s) in RCA: 2] [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: 11/06/2022]
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Wan Q, Lee SK, Lee J. Identification and validation of endogenous reference genes for biomarker expression profiling in abalone under endocrine disrupting chemicals (EDCs) exposure by quantitative real-time RT-PCR. Comp Biochem Physiol A Mol Integr Physiol 2008. [DOI: 10.1016/j.cbpa.2008.05.061] [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]
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Wan Q, Harris MF, Zwar N, Vagholkar S. Sharing risk management: an implementation model for cardiovascular absolute risk assessment and management in Australian general practice. Int J Clin Pract 2008; 62:905-11. [PMID: 18479283 PMCID: PMC2658000 DOI: 10.1111/j.1742-1241.2008.01769.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
PURPOSE Despite considerable work in developing and validating cardiovascular absolute risk (CVAR) algorithms, there has been less work on models for their implementation in assessment and management. The aim of our study was to develop a model for a joint approach to its implementation based on an exploration of views of patients, general practitioners (GPs) and key informants (KIs). METHODS We conducted six focus group (three with GPs and three with patients) and nine KI interviews in Sydney. Thematic analysis was used with comparison to highlight the similarities and differences in perspectives of participants. RESULTS Conducting CVAR was seen as more acceptable for regular patients rather than new patients for whom GPs had to attract their interest and build rapport before doing so at the next visit. GPs' interest and patients' positive attitude in managing risk were important in implementing CVAR. Long consultations, good communication skills and having a trusting relationship helped overcome the barriers during the process. All the participants supported engaging patients to self-assess their risk before the consultation and sharing decision making with GPs during consultation. Involving practice staff to help with the patient self-assessment, follow-up and referral would be helpful in implementing CVAR assessment and management, but GPs, patients and practices may need more support for this to occur. CONCLUSIONS Multiple strategies are required to promote the better use of CVAR in the extremely busy working environment of Australian general practice. An implementation model has been developed based on our findings and the Chronic Care Model. Further research needs to investigate the effectiveness of the proposed model.
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Affiliation(s)
- Q Wan
- Centre for Primary Health Care and Equity, School of Public Health and Community Medicine, University of New South Wales, Sydney, NSW, Australia
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Wan Q, Harris MF, Davies GP, Jayasinghe UW, Flack J, Georgiou A, Burns JR, Penn DL. Cardiovascular risk management and its impact in Australian general practice patients with type 2 diabetes in urban and rural areas. Int J Clin Pract 2008; 62:53-8. [PMID: 17927763 DOI: 10.1111/j.1742-1241.2007.01604.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [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] [Indexed: 11/29/2022] Open
Abstract
OBJECTIVE To investigate the cardiovascular disease (CVD) risk management and its impact on Australian general practice patients with type 2 diabetes in urban and rural areas between 2000 and 2002, and to compare trends over time and differences between urban and rural areas. DESIGN AND METHODS Population-based repeated cross-sectional study. 6305 patient records from 2000 to 2002 were extracted from registers of diabetes type 2 patients held by 16 Divisions of General Practice (250 practices) across Australia. Multivariate logistic regression comparing urban and rural patients at differing time-periods and comparing trend changes was conducted using multilevel analysis. RESULTS Prescribing of antihypertensive and lipid-lowering medications was infrequent but increased in both urban and rural areas from 2000 to 2002 (p<0.05), while attendance at other allied health professionals did not. While the proportion of patients meeting targets for high-density lipoprotein cholesterol (HDL-C) and low-density lipoprotein cholesterol increased in both areas over time, only in urban areas were there improvements in total cholesterol and blood pressure over time. The proportion of patients meeting targets for HDL-C, triglycerides and smoking cessation were higher in urban areas than in rural areas by 2002. CONCLUSIONS Despite a number of national initiatives to improve general practice care and specifically support better care in rural areas, cardiovascular risk management and its impact in Australian general practice patients with type 2 diabetes was still suboptimal during the study period especially among patients from rural areas. Greater effort will be required to reduce the disparity in risk factor prevention for CVD between urban and rural people with type 2 diabetes in Australia.
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Affiliation(s)
- Q Wan
- Centre for Primary Health Care and Equity, School of Public Health and Community Medicine, University of New South Wales, Sydney, NSW, Australia
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El‐Hayek Y, Gomez G, Ning K, Liao M, Wan Q. [P221]: Regulation of neuronal migration by direct‐current electrical fields in the developing brain. Int J Dev Neurosci 2006. [DOI: 10.1016/j.ijdevneu.2006.09.281] [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] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Affiliation(s)
- Y.H. El‐Hayek
- University of Toronto and Toronto Western Research InstituteUniversity Health NetworkCanada
| | - G. Gomez
- University of Toronto and Toronto Western Research InstituteUniversity Health NetworkCanada
| | - K. Ning
- University of Toronto and Toronto Western Research InstituteUniversity Health NetworkCanada
| | - M.X. Liao
- University of Toronto and Toronto Western Research InstituteUniversity Health NetworkCanada
| | - Q. Wan
- University of Toronto and Toronto Western Research InstituteUniversity Health NetworkCanada
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Wan Q, Harris MF, Jayasinghe UW, Flack J, Georgiou A, Penn DL, Burns JR. Quality of diabetes care and coronary heart disease absolute risk in patients with type 2 diabetes mellitus in Australian general practice. Qual Saf Health Care 2006; 15:131-5. [PMID: 16585115 PMCID: PMC2464833 DOI: 10.1136/qshc.2005.014845] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVE To examine the quality of diabetes care and prevention of cardiovascular disease (CVD) in Australian general practice patients with type 2 diabetes and to investigate its relationship with coronary heart disease absolute risk (CHDAR). METHODS A total of 3286 patient records were extracted from registers of patients with type 2 diabetes held by 16 divisions of general practice (250 practices) across Australia for the year 2002. CHDAR was estimated using the United Kingdom Prospective Diabetes Study algorithm with higher CHDAR set at a 10 year risk of >15%. Multivariate multilevel logistic regression investigated the association between CHDAR and diabetes care. RESULTS 47.9% of diabetic patient records had glycosylated haemoglobin (HbA1c) >7%, 87.6% had total cholesterol >or=4.0 mmol/l, and 73.8% had blood pressure (BP) >or=130/85 mm Hg. 57.6% of patients were at a higher CHDAR, 76.8% of whom were not on lipid modifying medication and 66.2% were not on antihypertensive medication. After adjusting for clustering at the general practice level and age, lipid modifying medication was negatively related to CHDAR (odds ratio (OR) 0.84) and total cholesterol. Antihypertensive medication was positively related to systolic BP but negatively related to CHDAR (OR 0.88). Referral to ophthalmologists/optometrists and attendance at other health professionals were not related to CHDAR. CONCLUSIONS At the time of the study the diabetes and CVD preventive care in Australian general practice was suboptimal, even after a number of national initiatives. The Australian Pharmaceutical Benefits Scheme (PBS) guidelines need to be modified to improve CVD preventive care in patients with type 2 diabetes.
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Affiliation(s)
- Q Wan
- Centre for Primary Health Care and Equity, School of Public Health and Community Medicine, University of New South Wales, Australia
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Abstract
The synthesis of semiconducting Sb-doped SnO2 nanowires in mass production by an in situ doping approach are reported, and the ethanol sensing results demonstrated that Sb-doped SnO2 nanowires have a promising application for the fabrication of gas sensors with low resistance, and quick response and recovery times.
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Affiliation(s)
- Q Wan
- Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ, UK.
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Flynn JC, Gardas A, Wan Q, Gora M, Alsharabi G, Wei WZ, Giraldo AA, David CS, Kong YM, Banga JP. Superiority of thyroid peroxidase DNA over protein immunization in replicating human thyroid autoimmunity in HLA-DRB1*0301 (DR3) transgenic mice. Clin Exp Immunol 2004; 137:503-12. [PMID: 15320899 PMCID: PMC1809151 DOI: 10.1111/j.1365-2249.2004.02553.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/25/2004] [Indexed: 11/26/2022] Open
Abstract
Murine experimental autoimmune thyroiditis (EAT), characterized by thyroid destruction after immunization with thyroglobulin (Tg), has long been a useful model of organ-specific autoimmune disease. More recently, porcine thyroid peroxidase (pTPO) has also been shown to induce thyroiditis, but these results have not been confirmed. When (C57BL/6 x CBA)F(1) mice, recently shown to be susceptible to mouse TPO-induced EAT, were immunized with plasmid DNA to human TPO (hTPO) and cytokines IL-12 or GM-CSF, significant antibody (Ab) titres were generated, but minimal thyroiditis was detected in one mouse only from the TPO + GM-CSF immunized group. However, after TPO DNA immunization of HLA-DR3 transgenic class II-deficient NOD mice, thyroiditis was present in 23% of mice injected with TPO + IL-12 or GM-CSF. We also used another marker for assessing the closeness of the model to human thyroid autoimmunity by examining the epitope profile of the anti-TPO Abs to immunodominant determinants on TPO. Remarkably, the majority of the anti-TPO Abs was directed to immunodominant regions A and B, demonstrating the close replication of the model to human autoimmunity. TPO protein immunizations of HLA-DR3 transgenic mice with recombinant hTPO did not result in thyroiditis, nor did immunization of other mice expressing HLA class II transgenes HLA-DR4 or HLA-DQ8, with differential susceptibility to Tg-induced EAT. Moreover, our efforts to duplicate exactly the experimental procedures used with pTPO also failed to induce thyroiditis. The success of hTPO plasmid DNA immunization of DR3(+) mice, similar to our reports on Tg-induced thyroiditis and thyrotropin receptor DNA-induced Graves' hyperthyroidism, underscores the importance of DR3 genes for all three major thyroid antigens, and provides another humanized model to study autoimmune thyroid disease.
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Affiliation(s)
- J C Flynn
- Department of Immunology and Microbiology, Wayne State University School of Medicine, Detroit, USA
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Wan Q, Rumpf D, Schricker SR, Mariotti A, Culbertson BM. Influence of hyperbranched multi-methacrylates for dental neat resins on proliferation of human gingival fibroblasts. Biomacromolecules 2002; 2:217-22. [PMID: 11749176 DOI: 10.1021/bm000101p] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We have previously shown that hyperbranched multi-methacrylate (H-MMA)-modified dental resins have VLC activities, lower polymerization shrinkage, and improved mechanical properties, compared to the 2,2-bis[4-(2-hydroxy-3-methacryloyolxypropoxy)phenyl]propane/triethyleneglycol dimethacrylate (BisGMA/TEGDMA) neat resin. The results are due to the unique molecular structure and high molecular weight of H-MMA intermediates. The purpose of this study was to evaluate the biocompatibility of H-MMA-modified dental neat resins. The cell proliferation of three human gingival fibroblast strains on either H-MMA, BisGMA/TEGDMA, or a polystyrene disk was examined. Following 10 days of cell proliferation, there was no statistical difference in cell number between H-MMA-modified and unmodified resin disks. H-MMA-modified resins had less free monomer leaching than the unmodified resin but showed similar properties in water sorption and contact angle values. All these results suggest that the biocompatibility of H-MMA-modified dental neat resins is as good as that of commercially used BisGMA/TEGDMA resin and H-MMA has potential applications in dental composites.
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Affiliation(s)
- Q Wan
- College of Dentistry, The Ohio State University, 305 West 12th Street, P.O. Box 182357, Columbus, Ohio 43218-2357, USA
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Xu D, Wan Q, Li J, Nie W. [Observation on the factors influencing infection rate of Meriones unguiculatus with Brugia malayi]. Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 2002; 16:38-41. [PMID: 12078206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
AIM To explore the factors influencing the infection rate of M. unguiculatus with B. malayi. METHODS The survival rate, infection rate and infection intensity were observed in M. unguiculatus infected with the infective larvae of B. malayi contained in normal saline, antibiotic, glucose or culture medium RPMI1640, respectively. RESULTS The survival rate, infection rate and rate of infection intensity in normal saline group, antibiotic group, glucose group and RPMI1640 group were 80.9%, 60.5%, and 43.4%; 98.8%, 52.9% and 30.6%; 98.0%, 68.8% and 50.0%; 91.2%, 67.7% and 51.6%, respectively. The rate and the infection intensity were higher in the jirds infected with the 6th generation of Zhejiang strain than that with the 31st generation of Guizhou strain. CONCLUSION The antibiotic was found to raise the living rate of the infected jirds, but reduce the infection rate and infection degree intensity; whereas glucose and culture medium RPMI1640 could raise the positive rate and the infectino. The jird was more susceptible to the 6th generation of Zhejiang strain than the 31st generation of Guizhou strain of B. malayi.
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Affiliation(s)
- D Xu
- Department of Parasitology, Shanghai Second Medical University, Shanghai 200025
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Chu B, Liu T, Wan Q, Burger C. Polymer-assisted formation of polyoxomolybdates. Acta Crystallogr A 2002. [DOI: 10.1107/s0108767302086099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
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Xu D, Wan Q, Li J, Nie W. [Observation on the susceptibility of Anopheles sinensis to periodic Brugia malayi microfilariae]. Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 2002; 16:117-9. [PMID: 12078219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
AIM To explore the susceptibility of Anopheles sinensis to Brugia malayi microfilariae of different densities. METHODS The survival rate of mosquitoes, the rate of microfilariae penetrating through midgut, the mature rate of larvae into infective larvae (L3) and the mean number of L3 in the survived mosquitoes were observed. RESULTS With the microfilariae densities of 32.5 mf/microliter and 141.5 mf/microliter, the rate of larvae matured into L3 was 36.2% and 8.7%, respectively, the mean number of L3 recovered from infected mosquitoes was 8.24 and 0.30, respectively. CONCLUSION An apparently higher susceptibility of An. sinensis to B. malayi was found by using B. malayi microfilariae density of 32.5-66.4 mf/microliter.
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Affiliation(s)
- D Xu
- Department of Parasitology, Zunyi Medical College, Zhunyi 563003
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Abstract
A highly ordered, porous nanoscale network structure of polyoxomolybdate was prepared from the slow decomposition of an unstable precursor compound MoO(2)(OH)(OOH) in the presence of PEO-containing triblock copolymer gels or semidilute/concentrated poly(ethylene oxide) (PEO) homopolymer solutions. Small-angle X-ray scattering (SAXS) and wide-angle X-ray diffraction (WAXD) measurements of the 1-microm size crystals revealed an extremely ordered primitive cubic (pc) structure made of polyoxomolybdates. Scanning electron microscopy (SEM) measurements showed that the overall size of these single crystals was close to 1 microm, in agreement with estimates from the scattering peak widths. Evidence from both scattering measurements and transmission electron microscope (TEM) measurements suggested that the system formed a highly porous primitive cubic network similar to that of certain zeolite structures. However, the observed lattice constant of 5 nm was much larger. The function of the PEO-containing polymer network was found to be very subtle and complex. Presumably, PEO acted simultaneously as a weak reducing agent and as a viscous matrix to ensure sufficient time for the formation of long-range ordered structures, resulting in the growth of extremely uniform but probably hollow "nanospheres". We suggest that this new material may find unique applications as a high-efficiency absorbent or catalyst. Furthermore, the current synthetic method may open up new pathways to prepare similar functional nanomaterials.
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Affiliation(s)
- T Liu
- Department of Physics, Brookhaven National Laboratory, Upton, NY 11973, USA
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