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Wang RJ, Wang CY, Feng YT, Tang C. Mechanical responses of a-axis GaN nanowires under axial loads. NANOTECHNOLOGY 2018; 29:095707. [PMID: 29381479 DOI: 10.1088/1361-6528/aaa64d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Gallium nitride (GaN) nanowires (NWs) hold technological significance as functional components in emergent nano-piezotronics. However, the examination of their mechanical responses, especially the mechanistic understanding of behavior beyond elasticity (at failure) remains limited due to the constraints of in situ experimentation. We therefore performed simulations of the molecular dynamics (MD) of the mechanical behavior of [Formula: see text]-oriented GaN NWs subjected to tension or compression loading until failure. The mechanical properties and critical deformation processes are characterized in relation to NW sizes and loading conditions. Detailed examinations revealed that the failure mechanisms are size-dependent and controlled by the dislocation mobility on shuffle-set pyramidal planes. The size dependence of the elastic behavior is also examined in terms of the surface structure determined modification of Young's modulus. In addition, a comparison with c-axis NWs is made to show how size-effect trends vary with the growth orientation of NWs.
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Herzog CR, Berzins DW, DenBesten P, Gregory RL, Hargreaves KM, Messer RLW, Mina M, Mooney MP, Paine ML, Phillips C, Presland RB, Quivey RG, Scannapieco FA, Sheridan JF, Svoboda KKH, Trackman PC, Walker MP, Walker SG, Wang CY, Hu JCC. Oral Sciences PhD Program Enrollment, Graduates, and Placement: 1994 to 2016. J Dent Res 2018; 97:483-491. [PMID: 29328868 DOI: 10.1177/0022034517749506] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
For decades, dental schools in the United States have endured a significant faculty shortage. Studies have determined that the top 2 sources of dental faculty are advanced education programs and private practice. Those who have completed both DDS and PhD training are considered prime candidates for dental faculty positions. However, there is no national database to track those trainees and no evidence to indicate that they entered academia upon graduation. The objective of this study was to assess outcomes of dental school-affiliated oral sciences PhD program enrollment, graduates, and placement between 1994 and 2016. Using the American Dental Association annual survey of advanced dental education programs not accredited by the Commission on Dental Accreditation and data obtained from 22 oral sciences PhD programs, we assessed student demographics, enrollment, graduation, and placement. Based on the data provided by program directors, the average new enrollment was 33, and graduation was 26 per year. A total of 605 graduated; 39 did not complete; and 168 were still in training. Among those 605 graduates, 211 were faculty in U.S. academic institutions, and 77 were faculty in foreign institutions. Given that vacant budgeted full-time faculty positions averaged 257 per year during this period, graduates from those oral sciences PhD programs who entered academia in the United States would have filled 9 (3.6%) vacant faculty positions per year. Therefore, PhD programs have consistently generated only a small pipeline of dental school faculty. Better mentoring to retain talent in academia is necessary. Stronger support and creative funding plans are essential to sustain the PhD program. Furthermore, the oral sciences PhD program database should be established and maintained by dental professional organizations to allow assessments of training models, trends of enrollment, graduation, and placement outcomes.
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Zhao GQ, Li YR, Wang XY, Ding X, Wang CY, Xu W, Han DM. [Differential evaluation of diagnostic criteria for pediatric obstructive sleep apnea hypopnea syndrome]. LIN CHUANG ER BI YAN HOU TOU JING WAI KE ZA ZHI = JOURNAL OF CLINICAL OTORHINOLARYNGOLOGY, HEAD, AND NECK SURGERY 2018; 32:12-17;22. [PMID: 29798203 DOI: 10.13201/j.issn.1001-1781.2018.01.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Indexed: 11/12/2022]
Abstract
Objective:To evaluate the difference of accessing pediatric sleep symptoms and living qualities between 3 diagnostic criteria: American Thoracic Society (ATS), International Classification of Sleep Disorder (ICSD-3), domestic Urumqi criterion (Draft); To investigate the relationship of PSG parameters and quality of life scale OSA-18. Method:Children with snoring who received PSG in Capital Medical University Beijing Tongren Hospital were recruited from Jan 2016 to Apr 2017. Subjects were diagnosed and grouped to SS, ICSD, ATS&ICSD (ATS&ICSD1, ATS&ICSD2) according to 3 criteria: ATS (AHI>5 or OAI>1), ICSD-3 (OAHI≥1) and Urumqi (AHI>5 or OAI>1, with LSaO₂<92%). Subjects' height, weight as well as quality of life scale OSA-18 were recorded. Result:Five hundred and fifteen children were finally included (Male: 350 cases, Female: 165 cases). There were 315, 70 and 130 children in group SS, ICSD, ATS&ICSD respectively. Weights and BMI of ICSD and ATS&ICSD were significantly higher than those of SS (P<0.05), and dysplasia scale of ATS&ICSD was higher than SS (P<0.05); after adjusting height, weight and BMI, sub-scores of sleep disorder were statistically different between 3 groups (P<0.05). Numbers and indexes of respiratory events other than central apneas and hypopneas in group SS, ICSD and ATS&ICSD were increased sequentially and statistically different (P<0.05); numbers and indexes of respiratory events other than mixed apneas in ATS&ICSD2 were significantly higher than that of ATS&ICSD1 (P<0.05). Conclusion:OAHI≥1/h combined with LSaO₂<92% should be used as pediatric OSAHS diagnostic criterion.
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Shariffuddin II, Teoh WH, Wahab S, Wang CY. Effect of single-dose dexmedetomidine on postoperative recovery after ambulatory ureteroscopy and ureteric stenting: a double blind randomized controlled study. BMC Anesthesiol 2018; 18:3. [PMID: 29304735 PMCID: PMC5756369 DOI: 10.1186/s12871-017-0464-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Accepted: 12/18/2017] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND Ambulatory surgery has recently gain popularity, as it is a good method of optimizinghospital resources utilization. To support ambulatory surgery, anaesthetic goals nowrevolve around patients' early recovery with minimal pain and nausea, expedientdischarge home and prompt resumption of activities of daily living. In this study, weevaluated the effect of a single pre-induction dose of dexmedetomidine on anaestheticrequirements, postoperative pain and clinical recovery after ambulatory ureteroscopy andureteric stenting under general anaesthesia. METHODS Sixty patients were randomised to receive IV dexmedetomidine 0.5 μg.kg-1 (Group DEX, n = 30) or IV saline (Group P, n = 30). General anaesthesia was maintained with Sevoflurane: oxygen: air, titrated to BIS 40-60. Pain intensity, sedation, rescue analgesics, nausea/vomiting and resumption of daily activities were recorded at 1 h, and postoperative day (POD) 1-5. RESULTS Group DEX patients had significant reduction in sevoflurane minimum alveolar concentration (MAC), mean (SD) DEX vs. Placebo 0.6 (0.2) vs. 0.9 (0.1), p = 0.037; reduced postoperative resting pain at 1 h (VAS 0-10) (mean (SD) 1.00 (1.84) vs. 2.63 (2.78), p = 0.004), POD 1 (mean (SD) 1.50 (1.48) vs. 2.87 (2.72), p = 0.002), POD 2 (0.53 (0.97) vs. 1.73 (1.96), p = 0.001) and POD 3 (0.30 (0.75) vs. 0.89 (1.49), p = 0.001). DEX patients also had less pain on movement POD 1 (3.00 (2.12) vs. 4.30 (3.10), p = 0.043) and POD 2 (2.10 (1.98) vs. 3.10 (2.46), p = 0.040), with higher resumption of daily activities by 48 h compared to placebo, 87% vs. 63%, p = 0.04. CONCLUSIONS We conclude that a single dose of dexmedetomidine was a useful adjuvant in reducing MAC and postoperative pain (at 1 h and POD 1-3), facilitating faster return to daily activities by 48 h. TRIAL REGISTRATION The Australian New Zealand Clinical Trials Registry (ANZCTR), ACTRN12617001120369 , 31st July 2017, retrospectively registered.
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Liu F, Hu DH, Zhang YF, Wang B, Huang K, Wang CY, Xia XY. [A retrospective study of tumor and fertility outcomes after fertility-sparing surgical treatment of patients with borderline ovarian tumors]. ZHONGHUA YI XUE ZA ZHI 2017; 97:3699-3703. [PMID: 29325322 DOI: 10.3760/cma.j.issn.0376-2491.2017.47.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To study tumors and fertility outcomes after fertility-sparing surgical treatment with borderline ovarian tumors (BOT). Methods: One hundred and nineteen patients with BOT enrolled from 3 hospitals between January 2004 and January 2017 were analysed retrospectively.The clinical data and follow-up results were obtained and analyzed. Results: Among the 119 BOT patients, 55 patients underwent fertility-sparing surgery.The median age was 43 years (interquartile range: 15-80 years). There were 103 patients (86.55%) in stage Ⅰ, and 16 patients (13.45%) in stage Ⅱ and above.The median follow up time was 68 months (range: 4-155). (1)Tumor outcomes: 13 patients recurred and 3 patients died.Progression free survival (PFS) and the overall survival rate had no significant difference between the two groups (85.45% vs 92.19% P=0.309, 96.4% vs 98.4% P=0.492). PFS was related to FIGO stage, invasive implantation and chemotherapy by univariate analysis (P<0.05). The multivariate Cox regression model analysis showed that FIGO stage and invasive implantation were independent prognostic factors for PFS (P<0.05). (2) Pregnancy outcomes: 28 patients had a planned for pregnancy in fertility-sparing group, with 13 (46.43%) of them were pregnancy. Conclusions: FIGO stage and invasive implantation were the important factors of prognosis.Fertility-sparing surgery is safe and feasible to preserve the fertility of young patients.
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Wang CY, Hu DS, Wen J, Lu W, Li J. [Upper gastrointestinal bleeding caused by exfoliative esophagitis in one patient with hepatitis B cirrhosis]. ZHONGHUA GAN ZANG BING ZA ZHI = ZHONGHUA GANZANGBING ZAZHI = CHINESE JOURNAL OF HEPATOLOGY 2017; 25:868-869. [PMID: 29325283 DOI: 10.3760/cma.j.issn.1007-3418.2017.11.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Gu DS, Li PZ, Chen ZL, Xu Y, Wang CY, Sun XY. [The clinical study of olfactory dysfunction in IgG4-related disease]. LIN CHUANG ER BI YAN HOU TOU JING WAI KE ZA ZHI = JOURNAL OF CLINICAL OTORHINOLARYNGOLOGY, HEAD, AND NECK SURGERY 2017; 31:1658-1661;1665. [PMID: 29798122 DOI: 10.13201/j.issn.1001-1781.2017.21.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Indexed: 11/12/2022]
Abstract
Objective:IgG4-related disease is a newly recognized systemic disease, and its elucidation is progressing. However, little is known about its sinonasal manifestations.The aim of this study was to assess the olfaction of patients with IgG4-related disease.Method:Twenty-two patients with IgG4-related disease underwent the odor stick identification test to measure olfactory function.We analyzed the clinical features, including serum IgG4 levels, involved organs, and sinonasal computed tomography scores to explore the etiology of olfactory dysfunction.Result:Eleven patients with IgG4-related disease were found to have olfactory dysfunction. There were no differences in the clinical features between the olfactory dysfunction group and the normal group.Conclusion:There were no correlation between olfactory function and serum IgG4 level, involved organs or sinonasal computed tomography scores.We found that the prevalence of olfactory dysfunction was high in patients with IgG4-related disease and that it could be reversed.Olfactory dysfunction appears to be a novel important manifestation of IgG4-related disease.
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Yuen V, Chen C, Liu L, Wang CY, Choi SW. Ultrasound examination of gastric contents: are qualitative and quantitative assessments complementary? A reply. Anaesthesia 2017; 72:1281-1282. [PMID: 28891055 DOI: 10.1111/anae.14055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Wang CY, Jiang B, Li J, Li S, Hu DS, Wei J, Guo XL, Lu W. [Value of endoscopic ultrasound in early diagnosis of gastroesophageal varices in patients with liver cirrhosis]. ZHONGHUA GAN ZANG BING ZA ZHI = ZHONGHUA GANZANGBING ZAZHI = CHINESE JOURNAL OF HEPATOLOGY 2017; 24:671-675. [PMID: 27788723 DOI: 10.3760/cma.j.issn.1007-3418.2016.09.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the value of endoscopic ultrasound in the early diagnosis of gastroesophageal varices in patients with liver cirrhosis. Methods: A total of 74 patients with liver cirrhosis who were not found to have esophageal or gastric varices by conventional endoscopic examination were enrolled. Endoscopic ultrasound was performed to evaluate its value in the early diagnosis of gastroesophageal varices in patients with liver cirrhosis. The Mann-Whitney U test was used for comparison of non-parametric data between groups, and a one-way analysis of variance was used for comparison between multiple groups; the Pearson simple correlation coefficient was used for correlation analysis. Results: Among the 74 patients with liver cirrhosis, 3(4.1%)were not found to have esophageal and gastric submucosal varices, peripheral varices, or perforating branches by endoscopic ultrasound. Among the 71 patients with liver cirrhosis who underwent endoscopic ultrasound, 16(22.5%)had esophageal submucosal varices, and 22(31.0%)had gastric submucosal varices; 58 patients(81.7%)were found to have at least one type of esophageal peripheral varices. The numbers of patients detected to have paraesophageal varices, periesophageal varices, paragastric varices, and perigastric varices were 29(40.8%), 24(33.8%), 28(39.4%), and 22(31.0%), respectively, which were significantly different from the number in patients with chronic liver diseases(P < 0.05). Among the 71 patients with liver cirrhosis who underwent endoscopic ultrasound, 20(28.2%)were found to have perforating branches with esophageal and gastric submucosal varices or peripheral varices, which showed a significant difference from the number in patients with chronic liver diseases(P < 0.05). In patients with liver cirrhosis, esophageal and gastric peripheral varices were associated with esophageal and gastric submucosal varices(P < 0.05). Conclusion: Endoscopic ultrasound has a certain value in the early diagnosis of esophageal and gastric varices in patients with liver cirrhosis.
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Liu SQ, Ma YB, Han ZH, Xie X, Wang CY, Tao Y, Chen H, Liu YP. [The Value of SMI in the Evaluation of interventional therapy of liver cancer]. ZHONGHUA GAN ZANG BING ZA ZHI = ZHONGHUA GANZANGBING ZAZHI = CHINESE JOURNAL OF HEPATOLOGY 2017; 25:512-516. [PMID: 29055989 DOI: 10.3760/cma.j.issn.1007-3418.2017.07.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the value of super microvascular imaging(SMI) for evaluating the effect of interventional therapy of liver cancer. Methods: A total of 30 patients with 40 leisions were enrolled in this study, from the tumor intervention department in the third affiliated hospital of suzhou university.This patients were underwent TACE, after the treatment 1 month, CDFI, SMI, and CT were study respectively. Using the continuity correction McNemar matching chi-square test, with P < 0.05 for the standard , CDFI and SMI shows the difference in monitoring the microvascular imaging in and around the tumors leisions. Results: A total of 30 patients, 12 cases were primary liver cancer (7 cases combined with liver cirrhosis), 18cases were metastatic liver cancer; 30 cases including 25 single and 5 multiple. Significant difference were found between CT and SMI in detecting blood flows inside the lesion (χ² = 8.642 9, P < 0.05), and were also found between CT and CDFI in detecting blood flows inside the lesion (χ² = 16.961 5, P < 0.05). The AUROC, sensitivity, specificity, accuracy, PPV and NPV of CDFI were 0.647, 29.4%、100%、29.4%、100%、20.0%, while in SMI were 0.809, 61.8%、100%、61.7%、100%、31.5%, respectively. Conclusions: SMI SMI can detect the microvascular inside the lesions. This new method was superior to CDFI, achieving the same effect as CT.
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Wang CY, Chen YC, Lin CH, Hwang KS, Su HY. Successful treatment with recombinant blood factor VIIa in severe postpartum hemorrhage-induced disseminated intravascular coagulation. Taiwan J Obstet Gynecol 2017; 55:301-2. [PMID: 27125421 DOI: 10.1016/j.tjog.2014.11.027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/11/2014] [Indexed: 11/27/2022] Open
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Devereaux PJ, Biccard BM, Sigamani A, Xavier D, Chan MTV, Srinathan SK, Walsh M, Abraham V, Pearse R, Wang CY, Sessler DI, Kurz A, Szczeklik W, Berwanger O, Villar JC, Malaga G, Garg AX, Chow CK, Ackland G, Patel A, Borges FK, Belley-Cote EP, Duceppe E, Spence J, Tandon V, Williams C, Sapsford RJ, Polanczyk CA, Tiboni M, Alonso-Coello P, Faruqui A, Heels-Ansdell D, Lamy A, Whitlock R, LeManach Y, Roshanov PS, McGillion M, Kavsak P, McQueen MJ, Thabane L, Rodseth RN, Buse GAL, Bhandari M, Garutti I, Jacka MJ, Schünemann HJ, Cortes OL, Coriat P, Dvirnik N, Botto F, Pettit S, Jaffe AS, Guyatt GH. Association of Postoperative High-Sensitivity Troponin Levels With Myocardial Injury and 30-Day Mortality Among Patients Undergoing Noncardiac Surgery. JAMA 2017; 317:1642-1651. [PMID: 28444280 DOI: 10.1001/jama.2017.4360] [Citation(s) in RCA: 492] [Impact Index Per Article: 70.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
IMPORTANCE Little is known about the relationship between perioperative high-sensitivity troponin T (hsTnT) measurements and 30-day mortality and myocardial injury after noncardiac surgery (MINS). OBJECTIVE To determine the association between perioperative hsTnT measurements and 30-day mortality and potential diagnostic criteria for MINS (ie, myocardial injury due to ischemia associated with 30-day mortality). DESIGN, SETTING, AND PARTICIPANTS Prospective cohort study of patients aged 45 years or older who underwent inpatient noncardiac surgery and had a postoperative hsTnT measurement. Starting in October 2008, participants were recruited at 23 centers in 13 countries; follow-up finished in December 2013. EXPOSURES Patients had hsTnT measurements 6 to 12 hours after surgery and daily for 3 days; 40.4% had a preoperative hsTnT measurement. MAIN OUTCOMES AND MEASURES A modified Mazumdar approach (an iterative process) was used to determine if there were hsTnT thresholds associated with risk of death and had an adjusted hazard ratio (HR) of 3.0 or higher and a risk of 30-day mortality of 3% or higher. To determine potential diagnostic criteria for MINS, regression analyses ascertained if postoperative hsTnT elevations required an ischemic feature (eg, ischemic symptom or electrocardiography finding) to be associated with 30-day mortality. RESULTS Among 21 842 participants, the mean age was 63.1 (SD, 10.7) years and 49.1% were female. Death within 30 days after surgery occurred in 266 patients (1.2%; 95% CI, 1.1%-1.4%). Multivariable analysis demonstrated that compared with the reference group (peak hsTnT <5 ng/L), peak postoperative hsTnT levels of 20 to less than 65 ng/L, 65 to less than 1000 ng/L, and 1000 ng/L or higher had 30-day mortality rates of 3.0% (123/4049; 95% CI, 2.6%-3.6%), 9.1% (102/1118; 95% CI, 7.6%-11.0%), and 29.6% (16/54; 95% CI, 19.1%-42.8%), with corresponding adjusted HRs of 23.63 (95% CI, 10.32-54.09), 70.34 (95% CI, 30.60-161.71), and 227.01 (95% CI, 87.35-589.92), respectively. An absolute hsTnT change of 5 ng/L or higher was associated with an increased risk of 30-day mortality (adjusted HR, 4.69; 95% CI, 3.52-6.25). An elevated postoperative hsTnT (ie, 20 to <65 ng/L with an absolute change ≥5 ng/L or hsTnT ≥65 ng/L) without an ischemic feature was associated with 30-day mortality (adjusted HR, 3.20; 95% CI, 2.37-4.32). Among the 3904 patients (17.9%; 95% CI, 17.4%-18.4%) with MINS, 3633 (93.1%; 95% CI, 92.2%-93.8%) did not experience an ischemic symptom. CONCLUSIONS AND RELEVANCE Among patients undergoing noncardiac surgery, peak postoperative hsTnT during the first 3 days after surgery was significantly associated with 30-day mortality. Elevated postoperative hsTnT without an ischemic feature was also associated with 30-day mortality.
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Chen C, Liu L, Wang CY, Choi SW, Yuen VM. A pilot study of ultrasound evaluation of gastric emptying in patients with end-stage renal failure: a comparison with healthy controls. Anaesthesia 2017; 72:714-718. [PMID: 28332186 DOI: 10.1111/anae.13869] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/13/2017] [Indexed: 01/06/2023]
Abstract
This prospective study was designed to evaluate gastric volume and content in patients with renal failure and healthy controls after an overnight fast, immediately after a light meal and at 6 h after the meal. Thirty subjects in each group were recruited. At each scanning session, gastric antral cross-sectional area was measured in the supine recumbent and right lateral decubitus positions, and a qualitative assessment of gastric contents was made using the Perlas three-point grading system. Six hours after the meal, the mean (SD) antral cross-sectional area in the supine position was 471 (195) mm2 in patients with renal failure and 319 (106) mm2 in healthy controls (p = 0.028), whereas in the right lateral position it was 756 (320) and 521 (180) mm2 , respectively (p = 0.21). In terms of the qualitative assessments of gastric contents, all subjects had an empty stomach after an overnight fast. Five patients with renal failure and no controls had Perlas grade 2 images, indicating significant gastric contents, 6 h after a meal (p = 0.026). This study supports the use of bedside gastric ultrasound as a point-of-care test for patients with known risk factors for delayed gastric emptying.
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Wisitrasameewong W, Kajiya M, Movila A, Rittling S, Ishii T, Suzuki M, Matsuda S, Mazda Y, Torruella MR, Azuma MM, Egashira K, Freire MO, Sasaki H, Wang CY, Han X, Taubman MA, Kawai T. DC-STAMP Is an Osteoclast Fusogen Engaged in Periodontal Bone Resorption. J Dent Res 2017; 96:685-693. [PMID: 28199142 DOI: 10.1177/0022034517690490] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Dendritic cell-specific transmembrane protein (DC-STAMP) plays a key role in the induction of osteoclast (OC) cell fusion, as well as DC-mediated immune regulation. While DC-STAMP gene expression is upregulated in the gingival tissue with periodontitis, its pathophysiological roles in periodontitis remain unclear. To evaluate the effects of DC-STAMP in periodontitis, anti-DC-STAMP-monoclonal antibody (mAb) was tested in a mouse model of ligature-induced periodontitis ( n = 6-7/group) where Pasteurella pneumotropica ( Pp)-reactive immune response activated T cells to produce receptor activator of nuclear factor kappa-B ligand (RANKL), which, in turn, promotes the periodontal bone loss via upregulation of osteoclastogenesis. DC-STAMP was expressed on the cell surface of mature multinuclear OCs, as well as immature mononuclear OCs, in primary cultures of RANKL-stimulated bone marrow cells. Anti-DC-STAMP-mAb suppressed the emergence of large, but not small, multinuclear OCs, suggesting that DC-STAMP is engaged in the late stage of cell fusion. Anti-DC-STAMP-mAb also inhibited pit formation caused by RANKL-stimulated bone marrow cells. Attachment of ligature to a second maxillary molar induced DC-STAMP messenger RNA and protein, along with elevated tartrate-resistant acid phosphatase-positive (TRAP+) OCs and alveolar bone loss. As we expected, systemic administration of anti-DC-STAMP-mAb downregulated the ligature-induced alveolar bone loss. Importantly, local injection of anti-DC-STAMP-mAb also suppressed alveolar bone loss and reduced the total number of multinucleated TRAP+ cells in mice that received ligature attachment. Attachment of ligature induced significantly elevated tumor necrosis factor-α, interleukin-1β, and RANKL in the gingival tissue compared with the control site without ligature ( P < 0.05), which was unaffected by local injection with either anti-DC-STAMP-mAb or control-mAb. Neither in vivo anti- Pp IgG antibody nor in vitro anti- Pp T-cell response and resultant production of RANKL was affected by anti-DC-STAMP-mAb. This study illustrated the roles of DC-STAMP in promoting local OC cell fusion without affecting adaptive immune responses to oral bacteria. Therefore, it is plausible that a novel therapeutic regimen targeting DC-STAMP could suppress periodontal bone loss.
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Wang CY, Mercer E, Kamranvand F, Williams L, Kolios A, Parker A, Tyrrel S, Cartmell E, McAdam EJ. Tube-side mass transfer for hollow fibre membrane contactors operated in the low Graetz range. J Memb Sci 2017; 523:235-246. [PMID: 28163357 PMCID: PMC5138158 DOI: 10.1016/j.memsci.2016.09.049] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Transformation of the tube-side mass transfer coefficient derived in hollow fibre membrane contactors (HFMC) of different characteristic length scales (equivalent diameter and fibre length) has been studied when operated in the low Graetz range (Gz<10). Within the low Gz range, mass transfer is generally described by the Graetz problem (Sh=3.67) which assumes that the concentration profile comprises a constant shape over the fibre radius. In this study, it is experimentally evidenced that this assumption over predicts mass transfer within the low Graetz range. Furthermore, within the low Gz range (below 2), a proportional relationship between the experimentally determined mass transfer coefficient (Kov) and the Graetz number has been identified. For Gz numbers below 2, the experimental Sh number approached unity, which suggests that mass transfer is strongly dependent upon diffusion. However, within this diffusion controlled region of mass transfer, tube-side fluid velocity remained important. For Gz numbers above 2, Sh could be satisfactorily described by extension to the Lévêque solution, which can be ascribed to the constrained growth of the concentration boundary layer adjacent to the fibre wall. Importantly this study demonstrates that whilst mass transfer in the low Graetz range does not explicitly conform to either the Graetz problem or classical Lévêque solution, it is possible to transform the experimentally derived overall mass transfer coefficient (Kov) between characteristic length scales (dh and L). This was corroborated by comparison of the empirical relationship determined in this study (Sh=0.36Gz) with previously published studies operated in the low Gz range. This analysis provides important insight for process design when slow tube-side flows, or low Schmidt numbers (coincident with gases) constrain operation of hollow fibre membrane contactors to the low Gz range. For the low Graetz range (<2), a proportional relationship between Sh and Gz is found. For Gz<2, Sh depends on diffusion but fluid velocity remains important. For Gz numbers above 2, Sh satisfactorily described by extension to Lévêque. Experimental Kov can be transformed between length scales (dh and L) at low Gz.
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Wang C, Wang CY, Ma LL, Zhang Y, Zhao LM, Gao CJ, Hou XM. [The analysis of systemic concomitant disease in sudden deafness patients]. LIN CHUANG ER BI YAN HOU TOU JING WAI KE ZA ZHI = JOURNAL OF CLINICAL OTORHINOLARYNGOLOGY, HEAD, AND NECK SURGERY 2017; 31:85-87. [PMID: 29871192 DOI: 10.13201/j.issn.1001-1781.2017.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Indexed: 11/12/2022]
Abstract
Objective:To investigate the clinical characteristics of patients with underlying disease in sudden deafness.Method:One hundred and seventy-three inpatients suffered from sudden deafness were included in this study. We analyzed the underlying disease of these patients retrospectively.Result:The underlying disease of sudden deafness patients mainly include atherosclerosis risk factors (hypertension, diabetes, hyperlipemia, hyperhomocystinemia, hyperuricemia) 79.8%, cervical vertebra disease 26.6%, ear disease 19.1%, thyroid disease 13.9%.Conclusion:The characteristics of underlying disease may plays a crucial role in pathogenesis and treatment in sudden deafness patients.
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Lin SS, Huang Y, Wang CY, Ren AG. [Polycyclic aromatic hydrocarbons exposure and birth defects]. ZHONGHUA YU FANG YI XUE ZA ZHI [CHINESE JOURNAL OF PREVENTIVE MEDICINE] 2017; 50:563-8. [PMID: 27256742 DOI: 10.3760/cma.j.issn.0253-9624.2016.06.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Birth defects are one of the most common adverse birth outcomes, which create a heavy economic burden to the country, society and family. And they are also one of the biggest problems facing public health today. Polycyclic aromatic hydrocarbons (PAHs) are a group of toxic pollutants existing in the environment widely, resulting from incomplete organic matter combustion, and can be taken into the body through various ways including the digestive tract, respiratory tract and so on. Recent researches suggest that the exposure of PAHs may be associated with various birth defects, while the special mechanism isn't very clear. This paper is a review of the relationship between PAHs and birth defects from the aspects of epidemiological data, experimental evidence on animals, which indicates that exposure of PAHs during pregnancy may be associated with birth defects including congenital heart defects, neural tube defects and cleft lip/plate. Furthermore, we explored the possible mechanism, including oxidative stress, oxidative damage and the changes of signal transduction pathway in order to provide some recommendations and suggestions on the future work.
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93
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Wang CY. [The Nobel prize and the current status of biomedical research in China]. ZHONGHUA KOU QIANG YI XUE ZA ZHI = ZHONGHUA KOUQIANG YIXUE ZAZHI = CHINESE JOURNAL OF STOMATOLOGY 2016; 51:705-707. [PMID: 27978908 DOI: 10.3760/cma.j.issn.1002-0098.2016.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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94
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Zhang QQ, Chen XM, Wang YF, Wang K, Wang CY. [Evaluation of 8 cases of bilateral vocal cord paralysis by the resection of posterior part of vocal cord and vocal process using PMOD]. ZHONGHUA ER BI YAN HOU TOU JING WAI KE ZA ZHI = CHINESE JOURNAL OF OTORHINOLARYNGOLOGY HEAD AND NECK SURGERY 2016; 51:939-940. [PMID: 27978886 DOI: 10.3760/cma.j.issn.1673-0860.2016.12.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
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95
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Wang CY, Lu YY, Qin WH. [Determination of 1-hydroxy-2-butanone in urine by gas chromatography]. ZHONGHUA LAO DONG WEI SHENG ZHI YE BING ZA ZHI = ZHONGHUA LAODONG WEISHENG ZHIYEBING ZAZHI = CHINESE JOURNAL OF INDUSTRIAL HYGIENE AND OCCUPATIONAL DISEASES 2016; 34:775-777. [PMID: 28043255 DOI: 10.3760/cma.j.issn.1001-9391.2016.10.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Objective: To establish a method for the determination of 1-hydroxy-2-butanone in urine by gas chromatography. Methods: Urine samples were acidified with hydrochloric acid, and then stored in the refrigerator . After thawing under natural conditions, urine volume of 2.0 ml was extracted by C18 solid phase, using methanol volume of 2.0 ml elution, detected by gas chromatography with FID detector and quantified by external standard method. Results: The measurement range of method is 0.986 ~32.88 μg/ml, correlation coefficient (r) =0.999 7, detection limit is 0.13 μg/ml; The recovery is 88.1% ~92.2% ; The precision is 1.4% ~3.2%. Conclusion: This method has a high sensitivity and simple processing. All technical indicators can meet the requirements of the determination method.
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Zheng JY, Oluoch G, Riaz Khan MK, Wang XX, Cai XY, Zhou ZL, Wang CY, Wang YH, Li XY, Liu F, Wang KB. Mapping QTLs for drought tolerance in an F2:3 population from an inter-specific cross between Gossypium tomentosum and Gossypium hirsutum. GENETICS AND MOLECULAR RESEARCH 2016; 15:gmr8477. [PMID: 27525919 DOI: 10.4238/gmr.15038477] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Cotton is one of the most important natural fiber crops in the world. Its growth and yield is greatly limited by drought. A quantitative trait locus (QTL) analysis was therefore conducted to investigate the genetic basis of drought tolerance in cotton (Gossypium spp) using 188 F2:3 lines developed from an inter-specific cross between a wild cotton species, G. tomentosum, and an upland cotton, G. hirsutum (CRI-12). A genetic map was constructed using 1295 simple sequence repeat markers, which amplified 1342 loci, distributed on 26 chromosomes, covering 3328.24 cM. A field experiment was conducted in two consecutive years (2014 and 2015) and 11 morphological and physiological traits were recorded under water-limited (W1)/well-watered (W2) regimes at three growth stages (bud, flowering, and full boll). The traits measured included chlorophyll content, plant height, leaf area, leaf number, leaf fresh weight, leaf dry weight, boll weight, number of bolls per plant, and the number of fruiting branches. Sixty-seven and 35 QTLs were found under the W1 and W2 conditions, respectively. Of these, the majority exhibited partial dominance or over-dominance genetic effects for increasing the trait values. Four consistent QTLs were found under the W1 treatment on chromosomes 5, 8, 9, and 16, whereas no consistent QTL was found in W2. Thirteen QTL clusters were also identified on nine chromosomes (2, 3, 5, 6, 9, 14, 15, 16, and 21). These results will help to elucidate the genetic basis of drought tolerance in cotton.
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Wang CY, Fang XY, Shen Q. [Novel ADAMTS13 compound heterozygous mutation in a patient with hereditary thrombotic thrombocytopenic purpura]. ZHONGHUA ER KE ZA ZHI = CHINESE JOURNAL OF PEDIATRICS 2016; 54:387-388. [PMID: 27143085 DOI: 10.3760/cma.j.issn.0578-1310.2016.05.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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98
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Cheng WW, Wang DQ, Wang CY, Du H, Wei QW. Microsatellite markers reveal genetic divergence among wild and cultured populations of Chinese sucker Myxocyprinus asiaticus. GENETICS AND MOLECULAR RESEARCH 2016; 15:gmr7581. [PMID: 27173283 DOI: 10.4238/gmr.15027581] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Studies of genetic diversity and genetic population structure are critical for the conservation and management of endangered species. The Chinese sucker Myxocyprinus asiaticus is a vulnerable monotypic species in China, which is at a risk of decline owing to fluctuations in effective population size and other demographic and environmental factors. We screened 11 microsatellite loci in 214 individuals to assess genetic differentiation in both wild and cultured populations. The single extant wild population had a higher number of alleles (13) than the cultured populations (average 7.3). High levels of genetic diversity, expressed as observed and expected heterozygosity (HO = 0.771, HE = 0.748, respectively), were found in both wild and cultured populations. We also report significant differentiation among wild and cultured populations (global FST = 0.023, P < 0.001). Both STRUCTURE analysis and neighbor-joining tree revealed three moderately divergent primary genetic clusters: the wild Yangtze population and the Sichuan population were each identified as an individual cluster, with the remaining populations clustered together. Twenty-two samples collected from the Yangtze River were assigned to the cultured population, demonstrating the efficacy of artificial propagation to avoid drastic reduction in the population size of M. asiaticus. These genetic data support the endangered status of the M. asiaticus and have implications for conservation management planning.
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Shao B, Li HP, DI LJ, Song GH, Jiang HF, Liang X, Wang CY, Yan Y, Lin XL, Wang LN, Wan FL, Yuan YH, You MN. [Predictive and prognostic value of monitoring lymphocyte subsets in peripheral blood before and after chemotherapy in patients with metastatic breast cancer]. BEIJING DA XUE XUE BAO. YI XUE BAN = JOURNAL OF PEKING UNIVERSITY. HEALTH SCIENCES 2016; 48:304-309. [PMID: 27080286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
OBJECTIVE To detect the proportion of lymphocyte subsets in peripheral blood of the advanced breast cancer patients before and after chemotherapy with docetaxel and thiotepa, as well as the association between the proportion of peripheral blood lymphocyte subsets with the response rate and prognosis. METHODS The proportions of lymphocyte subsets (CD3+ T cell, CD3+/CD4+ T cell, CD3+/CD8+ T cell, CD3-/CD16+56+ NK cell, CD3+/CD16+56+ T cell, CD19+ B cell, CD4+/CD25+ T cell, CD8+/CD28- T cell, CD8+/CD28+ T cell) in the peripheral blood of 86 patients were analyzed with flowcytometry before and after chemotherapy. The result was analyzed in combination with clinicopathological data. RESULTS The proportion of regulatory T cells (Treg) after chemotherapy in the disease control patients decreased significantly compared with that of the progressive patients (P=0.034). The difference of the proportions of Treg before and after chemotherapy affected significantly the overall survival (OS). The OS of the patients with decreased proportion of Treg was significantly longer than that of the patients with increased proportion of Treg, which was 23.5 and 9.4 months respectively (P<0.05). CONCLUSION The patients with decreased proportion of Treg after chemotherapy had higher response rate and better survival benefit.
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Mu L, Fang L, Wang H, Chen L, Yang Y, Qu XJ, Wang CY, Yuan Y, Wang SB, Wang YN. Exploring Northwest China's agricultural water-saving strategy: analysis of water use efficiency based on an SE-DEA model conducted in Xi'an, Shaanxi Province. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2016; 74:1106-1115. [PMID: 27642830 DOI: 10.2166/wst.2016.286] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Worldwide, water scarcity threatens delivery of water to urban centers. Increasing water use efficiency (WUE) is often recommended to reduce water demand, especially in water-scarce areas. In this paper, agricultural water use efficiency (AWUE) is examined using the super-efficient data envelopment analysis (DEA) approach in Xi'an in Northwest China at a temporal and spatial level. The grey systems analysis technique was then adopted to identify the factors that influenced the efficiency differentials under the shortage of water resources. From the perspective of temporal scales, the AWUE increased year by year during 2004-2012, and the highest (2.05) was obtained in 2009. Additionally, the AWUE was the best in the urban area at the spatial scale. Moreover, the key influencing factors of the AWUE are the financial situations and agricultural water-saving technology. Finally, we identified several knowledge gaps and proposed water-saving strategies for increasing AWUE and reducing its water demand by: (1) improving irrigation practices (timing and amounts) based on compatible water-saving techniques; (2) maximizing regional WUE by managing water resources and allocation at regional scales as well as enhancing coordination among Chinese water governance institutes.
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