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| 1 | Anti-inflammatory mechanisms of the novel cytokine interleukin-38 in allergic asthma显示文摘We elucidated the anti-inflammatory mechanisms of IL-38 in allergic asthma.Human bronchial epithelial cells and eosinophils were cocultured upon stimulation with the viral RLR ligand poly(I:C)/LyoVec or infection-related cytokine TNF-αto induce expression of cytokines/chemokines/adhesion molecules.House dust mite(HDM)-induced allergic asthma and humanized allergic asthma NOD/SCID murine models were established to assess anti-inflammatory mechanisms in vivo.IL-38 significantly inhibited induced proinflammatory IL-6,IL-1β,CCL5,and CXCL10 production,and antiviral interferon-βand intercellular adhesion molecule-1 expression in the coculture system.Mass cytometry and RNA-sequencing analysis revealed that IL-38 could antagonize the activation of the intracellular STAT1,STAT3,p38 MAPK,ERK1/2,and NF-κB pathways,and upregulate the expression of the host defense-related gene POU2AF1 and anti-allergic response gene RGS13.Intraperitoneal injection of IL-38 into HDM-induced allergic asthma mice could ameliorate airway hyperreactivity by decreasing the accumulation of eosinophils in the lungs and inhibiting the expression of the Th2-related cytokines IL-4,IL-5,and IL-13 in the bronchoalveolar lavage fluid(BALF)and lung homogenates.Histological examination indicated lung inflammation was alleviated by reductions in cell infiltration and goblet cell hyperplasia,together with reduced Th2,Th17,and innate lymphoid type 2 cell numbers but increased proportions of regulatory T cells in the lungs,spleen,and lymph nodes.IL-38 administration suppressed airway hyperreactivity and asthma-related IL-4 and IL-5 expression in humanized mice,together with significantly decreased CCR3^(+) eosinophil numbers in the BALF and lungs,and a reduced percentage of human CD4^(+)CRTH2^(+)Th2 cells in the lungs and mediastinal lymph nodes.Together,our results demonstrated the anti-inflammatory mechanisms of IL-38 and provided a basis for the development of a regulatory cytokine-based treatment for allergic asthma. | Xiaoyu Sun Tianheng Hou Edwin Cheung Tiffany Nga-Teng Iu Victor Wai-Hou Tam Ida Miu-Ting Chu Miranda Sin-Man Tsang Paul Kay-Sheung Chan Christopher Wai-Kei Lam Chun-Kwok Wong | 2020 | Cellular & Molecular Immunology2020，17，6： | 22 |
| 2 | Position Estimation for Wireless Sensor Networks 显示文摘 | Simon Wong K F Nor W Tsang Victor Cheung | 2005 | IEEE Globecom2005，，： | 1 |
| 3 | Constant-frequency hysteresis current control of grid-connected VSI without bandwidth control显示文摘 | Ho Carl Ngai-Man Cheung Victor S P Chung Henry Shu-Hung | 2009 | IEEE Trans on Power Electronics2009，24，11： | 1 |
| 4 | Postition Estimation for Wireless Sensor Networks 显示文摘 | K F Simon Wong W Tsang Ivor Victor Cheung | 2005 | IEEE Globecom2005，27，5： | 1 |
| 5 | Constant-Frequency Hysteresis Current Control of Grid-Connected VSI Without Bandwidth Control 显示文摘 | CARL NGAI MAN HO VICTOR S P CHEUNG HENRY SHU HUNG CHUNG | 2009 | IEEE Tram on Power Electronics2009，24，11： | 1 |
| 6 | Constant-frequency hysteresis current control of gridconnected VSI without bandwidth control显示文摘 | Carl Ngai-Man Ho Victor S P Cheung Henry Shu-Hung Chung | 2009 | IEEE Transactions on Power Electronics2009，24，11： | 1 |
| 7 | The Hong Kong consensus statements on unresectable hepatocellular carcinoma:narrative review and update for 2021显示文摘Background and Objective:Hong Kong,like many parts of Asia,faces a high burden of hepatocellular carcinoma(HCC)caused by high endemic rates of hepatitis B virus infection.Hong Kong clinicians have developed a high level of expertise in HCC treatment across surgical,transarterial,ablative,radiotherapeutic and systemic modalities.This publication summarizes the latest evidence-based recommendations on how these modalities should be used.Methods:In two meetings held in 2020,a multidisciplinary panel of surgeons,oncologists and interventional radiologists performed a narrative review of evidence on the management of HCC,with an emphasis on treatment of HCC not amenable to surgical resection.Close attention was paid to new evidence published since the previous version of these statements in 2018.Key Content and Findings:The expert panel has formulated 60 consensus statements to guide the staging and treatment of unresectable HCC.Since the previous version of these statements,considerable additions have been made to the recommendations on use of targeted therapies and immunotherapies because of the large volume of new evidence.Conclusions:Our consensus statements offer guidance on how to select HCC patients for surgical or non-surgical treatment and for choosing among non-surgical modalities for patients who are not candidates for resection.In particular,there is a need for more evidence to aid physicians in the selection of second-line systemic therapies,as currently most data are limited to patients with disease progression on first-line sorafenib. | Tan-To Cheung Simon Chun-Ho Yu Stephen L.Chan Ronnie T.P.Poon Philip Kwok Ann-Shing Lee Anna Tai Derek Tam Chin-Cheung Cheung Tak-Wing Lai Nam-Hung Chia Ada Law Tracy Shum Yim-Kwan Lam Vince Lau Victor Lee Charing Chong Chung-Ngai Tang Thomas Yau | 2023 | Hepatobiliary Surgery and Nutrition2023，12，3： | 0 |
| 8 | A Dynamic Forecasting System with Applications in Production Logistics显示文摘Production logistics involve the co-ordination of ac tivities such as production and materials control (PMC), inventory management, p roduct life cycle management, etc. Those activities demand for an accurate forec asting model. However, the conventional methods of making sell and buy decision based on human forecast or conventional moving average and exponential smoothing methods is no longer be sufficient to meet the future need. Furthermore, the un derlying statistics of the market information change from time to time due to a number of reasons such as change of global economic environment, government poli cies and business risks. This demands for highly adaptive forecasting model which is robust enough to response and adapt well to the fast changes in the dat a characteristics, in other words, the trajectory of the 'dynamic characteristic s' of the data. In this paper, an adaptive time-series modelling method was proposed for short -term dynamic forecasting. The method employs an autoregressive (AR) time-seri es model to carry out the forecasting process. A modified least mean square (MLM S) adaptive filter algorithm was established for adjusting the AR model coeffici ents so as to minimise the sum of squared of forecasting errors. A prototype dyn amic forecasting system was built based on the adaptive time-series modelling m ethod. Basically, the dynamic forecasting system can be divided into two phases, i.e. the Learning Phase and the Application Phase. The learning procedures star t with the determination of upper limit of the adaptation gain based on the conv ergence in the mean square criterion. Hence, the optimum ELMS filter parameters are determined using an iteration algorithm which changes each filter parameter i.e. the order, the adaptation gain andthe values initial coefficient vector on e by one inside a predetermined iteration range. The set of parameters which giv es the minimum value for sum of squared errors within the iteration range is sel ected as the optimum set of filter parameters. In the Application Phase, the sys tem is operated under a real-time environment. The sampled data is processed by the optimised ELMS filter and the forecasted data are calculated based on the a daptive time-series model. The error of forecasting is continuously monitored w ithin the predefined tolerance. When the system detects excessive forecasting er ror, a feedback alarm signal was issued for system re-calibration. Experimental results indicated that the convergence rate and sum of squared erro rs during initial adaptation could be significantly improved using the MLMS algorithm. The performance of the system was verified through a series of experi ments conducted on the forecast of materials demand and costing in productio n logistics. Satisfactory results were achieved with the forecast errors confini ng within in most instances. Further applications of the system can be found i n sales demand forecast, inventory management as well as collaborative planning, forecast and replenishment (CPFR) in logistics engineering. | CHEUNG Chi-fai LEE Wing-bun LO Victor | 2002 | 厦门大学学报(自然科学版)2002，41，S1： | 0 |
| 9 | Exacerbated VEGF up-regulation accompanies diabetes-aggravated hemorrhage in mice after experimental cerebral ischemia and delayed reperfusion显示文摘Reperfusion therapy is the preferred treatment for ischemic stroke,but is hindered by its short treatment window,especially in patients with diabetes whose reperfusion after prolonged ischemia is often accompanied by exacerbated hemorrhage.The mechanisms underlying exacerbated hemorrhage are not fully understood.This study aimed to identify this mechanism by inducing prolonged 2-hour transient intraluminal middle cerebral artery occlusion in diabetic Ins2Akita/+mice to mimic patients with diabetes undergoing delayed mechanical thrombectomy.The results showed that at as early as 2 hours after reperfusion,Ins2Akita/+mice exhibited rapid development of neurological deficits,increased infarct and hemorrhagic transformation,together with exacerbated down-regulation of tight-junction protein ZO-1 and upregulation of blood-brain barrier-disrupting matrix metallopeptidase 2 and matrix metallopeptidase 9 when compared with normoglycemic Ins2+/+mice.This indicated that diabetes led to the rapid compromise of vessel integrity immediately after reperfusion,and consequently earlier death and further aggravation of hemorrhagic transformation 22 hours after reperfusion.This observation was associated with earlier and stronger up-regulation of pro-angiogenic vascular endothelial growth factor(VEGF)and its downstream phospho-Erk1/2 at 2 hours after reperfusion,which was suggestive of premature angiogenesis induced by early VEGF up-regulation,resulting in rapid vessel disintegration in diabetic stroke.Endoplasmic reticulum stress-related pro-apoptotic C/EBP homologous protein was overexpressed in challenged Ins2Akita/+mice,which suggests that the exacerbated VEGF up-regulation may be caused by overwhelming endoplasmic reticulum stress under diabetic conditions.In conclusion,the results mimicked complications in patients with diabetes undergoing delayed mechanical thrombectomy,and diabetes-induced accelerated VEGF up-regulation is likely to underlie exacerbated hemorrhagic transformation.Thus,suppression of the VEGF pathway could be a potential approach to allow reperfusion therapy in patients with diabetic stroke beyond the current treatment window.Experiments were approved by the Committee on the Use of Live Animals in Teaching and Research of the University of Hong Kong[CULATR 3834-15(approval date January 5,2016);3977-16(approval date April 13,2016);and 4666-18(approval date March 29,2018)]. | Angela Ka Wai Lai Tsz Chung Ng Victor Ka Lok Hung Ka Cheung Tam Chi Wai Cheung Sookja Kim Chung Amy Cheuk Yin Lo | 2022 | Neural Regeneration Research2022，17，7： | 0 |
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