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Broad-spectrum ginsentides are principal bioactives in unraveling the cure-all effects of ginseng

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Acta Pharmaceutica Sinica B 2024年第2期14卷 653-666页

作者： Shining Loo Antony Kam Bamaprasad Dutta Xiaohong Zhang Nan Feng siu Kwan Sze Chuan-Fa Liu Xiaoliang Wang James P.tam School of Biological Sciences Nanyang Technological UniversitySingapore 637551Singapore Academy of Pharmacy Xi’an Jiaotong-Liverpool UniversitySuzhou 215123China Department of Biological Sciences Xi’an Jiaotong-Liverpool UniversitySuzhou 215123China Institute of Materia Medica Chinese Academy of Medical SciencesBeijing 100050China Department of Health Sciences Brock UniversityNiagara RegionON L2S 3A1Canada

Stress and illness connection is complex and involves multiple physiological *** ginsengs,reputed for their broad-spectrum“cure-all”effect,are widely prescribed to treat stress and related ***,the identity of ginseng’s“cure-all”medicinal compounds that relieve stress remains ***,we identify ginsentides as the principal bioactives that coordinate multiple systems to restore homeostasis in response to *** are disulfide-rich,cell-penetrating and proteolytic-stable *** affinity-enrichment mass spectrometry target identification together with in vitro,ex vivo and in vivo validations,we show that highly purified or synthetic ginsentides promote vasorelaxation by producing nitric oxide through endothelial cells via intracellular PI3K/Akt signaling pathway,alleviate a1-adrenergic receptor overactivity by reversing phenylephrine-induced constriction of aorta,decrease monocyte adhesion to endothelial cells via CD166/ESAM/CD40 and inhibit P2Y12 receptors to reduce platelet *** administered ginsentides were effective in animal models to reduce ADP-induced platelet aggregation,to prevent collagen and adrenalineinduced pulmonary thrombosis as well as anti-stress behavior of tail suspension and forced swimming tests in ***,these results strongly suggest that ginsentides are the principal panacea compounds of ginsengs because of their ability to target multiple extra-and intra-cellular proteins to reverse stress-induced damages.

关键词： Ginseng Cysteine-rich peptides Microproteins Cure-all Stress Homeostasis

Dual ultra-wideband(UWB)radar-based sleep posture recognition system:Towards ubiquitous sleep monitoring

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再生工程(英文) 2023年第1期4卷 36-43页

作者： Derek Ka-Hei Lai Li-Wen Zha Tommy Yau-Nam Leung Andy Yiu-Chau tam bryan Pak-Hei So Hyo-Jung Lim Daphne Sze Ki Cheung Duo Wai-Chi Wong James Chung-Wai Cheung Department of Biomedical Engineering Faculty of EngineeringThe Hong Kong Polytechnic UniversityHong Kong 999077China Department of Bioengineering Imperial CollegeLondon SW72AZUnited Kingdom Research Institute of Smart Ageing The Hong Kong Polytechnic UniversityHong KongChina School of Nursing The Hong Kong Polytechnic UniversityHong KongChina

Sleep posture monitoring is an essential assessment for obstructive sleep apnea(OSA)*** objective of this study is to develop a machine learning-based sleep posture recognition system using a dual ultra-wideband radar *** collected radiofrequency data from two radars positioned over and at the side of the bed for 16 patients performing four sleep postures(supine,left and right lateral,and prone).We proposed and evaluated deep learning approaches that streamlined feature extraction and classification,and the traditional machine learning approaches that involved different combinations of feature extractors and *** results showed that the dual radar system performed better than either single *** statistical features with random forest classifier yielded the best accuracy(0.887),which could be further improved via an ablation study(0.938).Deep learning approach using transformer yielded accuracy of 0.713.

关键词： Obstructive sleep apnea Deep learning Sleep monitoring Feature extraction Ablation study

Using state space models as a statistical impact measurement of survey redesigns: a case study of the labour force survey of the Australian Bureau of Statistics

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Statistical Theory and Related Fields 2019年第2期3卷 224-238页

作者： Xichuan(Mark)Zhang Jan A.van den Brakel siu-Ming tam Methodology Division Australian Bureau of Statistics(ABS)CanberraAustralia Department of Statistical Methods Statistics Netherlands and Department of Quantitative EconomicsMaastricht University School of Business and EconomicsCanberraAustralia National Institute for Applied Statistics Research Australia University of WollongongCanberraAustralia

The goals of any major business transformation programme in an official statistical agency often include improving data collection efficiency,data processing methodologies and data ***,the achievement of such improvements may have transitional statistical impacts that could be misinterpreted as real-world changes if they are not measured and handled *** paper describes a development work that sought to explore the design and analysis of a times-series experiment that measured the statistical impacts that sometimes occur during survey *** Labour Force Survey(LFS)of the Australian Bureau of Statistics(ABS)was used as a case *** the present study:(1)A large-scale field experiment was designed and conducted that allowed the outgoing and the incoming surveys to run in parallel for some periods to measure the impacts of any changes to the survey process;and(2)The precision of the impact measurement was continuously improved while the new survey design was being *** state space modelling(SSM)technique was adopted as the main approach,as it provides an efficient impact *** approach enabled sampling error structure to be incorporated in the time-series intervention *** approach was also able to be extended to take advantage of the availability of other related data sources(e.g.,the data obtained from the parallel data collection process)to improve the efficiency and accuracy of the impact *** stated above,the LFS was used as a case study;however,the models and methods developed in this study could be extended to other surveys.

关键词： Intervention analysis survey sampling structural time series modelling labour force survey Kalman filter

Nine-year experience of doxorubicin-eluting beads chemoembolization for hepatocellular carcinoma

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Hepatobiliary & Pancreatic Diseases International 2016年第5期15卷 493-498页

作者： Alvin Ho-Kwan Cheung Colin siu-Chi Lam Henry Shiu-Cheung tam Tan-To Cheung Roberta Pang Ronnie Tung-Ping Poon Department of Surgery University of Hong Kong and Queen Mary Hospital

BACKGROUND: Chemoembolization with doxorubucin-eluting beads (DEB) has been used to treat hepatocellular carcinoma (HCC) since 2007. This study compared the efifcacy and sur-vival between transarterial chemoembolization (TACE) with DEB and conventional approach (cTACE) in HCC treatment. METHODS: This retrospective case-control study compared the overall survival and tumor response of HCC patients to cTACE (n=190) and DEB (n=143) by the reassessment of com-puted tomography and serum alpha-fetoprotein (AFP). Mul-tivariate analysis was used to determine the factors affecting tumor response. RESULTS: The median post-treatment to pre-treatment AFP level was 0.8 for a DEB session (n=258) and 1.0 for a cTACE session (n=452), showing a signiifcantly greater decrease in AFP after DEB (P80 months after the ifrst TACE session in the DEB group. CONCLUSION: DEB is a safe alternative to cTACE in HCC pa-tients with better therapeutic efifcacy.

关键词： doxorubicin-eluting beads transarterial chemoembolization hepatocellular carcinoma

Molecular basis of von Hippel-Lindau syndrome in Chinese patients

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Chinese Medical Journal 2011年第2期124卷 237-241页

作者： siu Wai-kwan MA Ronald Ching-wan LAM Ching-wan MAK Chloe Miu YUEN Yuet-ping LO Fai-man Ivan CHAN Kin-wan LAM siu-fung LING siu-cheung TONG Sui-fan SO Wing-yee CHOW Chun-chung TANG Mary Hoi-yin tam wing-hung CHAN Albert Yan-wo Department of Pathology Princess Margaret Hospital Hong Kong China Department of Medicine & Therapeutics The Chinese University of Hong Kong Prince of Wales Hospital Hong Kong China Department of Pathology Li Ka Shing Faculty of Medicine The University of Hong Kong Queen Mary Hospital Hong Kong China Clinical Genetic Service Department of Health Hong Kong China Department of Medicine and Geriatrics Princess Margaret Hospital Hong Kong China Department of Paediatrics and Adolescent Medicine Princess Margaret Hospital Hong Kong China Department of Obstetrics & Gynaecology Tsan Yuk Hospital Hong Kong China Department of Obstetrics & Gynaecology The Chinese University of Hong Kong Prince of Wales Hospital Hong Kong China

Background Von Hippel-Lindau （VHL） syndrome is an autosomal dominant familial cancer syndrome predisposing the affected individuals to multiple tumours in various *** genetic basis of VHL in Southern Chinese is largely *** this study,we characterized the mutation spectrum of VHL in nine unrelated Southern Chinese *** Nine probands with clinical features of VHL,two symptomatic and eight asymptomatic family members were included in this *** diagnosis was performed twice for one *** probands had only isolated bilateral *** VHL gene was screened for mutations by polymerase chain reaction,direct sequencing and multiplex ligation-dependent probe amplification （MLPA）.Results The nine probands and the two symptomatic family members carried heterozygous germline *** different VHL mutations were identified in the nine *** splicing mutation,NM_000551.2：c.463＋1G〉T,was *** other seven VHL mutations,c.233A〉G [***78Ser],c.239G〉T [***80lle],c.319C〉G [***107Gly],c.481C〉T [***161X],c.482G〉A [***161GIn],c.499C〉T [***167Trp] and an exon 2 deletion,had been previously *** asymptomatic family members were positive for the mutation and the other five tested *** prenatal diagnosis,the fetuses were positive for the *** Genetic analysis could accurately confirm VHL syndrome in patients with isolated tumours such as sporadic phaeochromocytoma or epididymal papillary *** detection in asymptomatic family members allows regular tumour surveillance and early intervention to improve their ***-based diagnosis can have an important impact on clinical management for VHL families.

关键词： von Hippel-Lindau syndrome VHL gene Chinese VHL mutations

Seropharmacological Study on Osteogenic Effects of Post-Absorption Ingredients of An Osteoprotective Herbal Formula

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Chinese Journal of Integrative Medicine 2017年第1期23卷 25-32页

作者： siu Wing-sum KO Chun-hay WONG Hing-lok GAO Si SHUM Wai-ting LAU Clara Bik-san HUNG Lung-kim LEUNG Ping-chung Institute of Chinese Medicine Chinese University of Hong KongHong KongChina State Key Laboratory of Phytochemistry and Plant Resources in West China Chinese University of Hong KongHong KongChina Department of Orthopaedics and Traumatology Chinese University of Hong KonqHong KongChina

Objective： To further investigate the in vitro effects of an osteoprotective herbal formula ＂ELP＂（Herba Epimedii, Fructus Ligustri Lucidi and Fructus Psora/eae） using seropharmacological approach. Methods： Rats were fed with ELP or its individual component herbs for 2 days. The serum containing the post-absorbed ingredients of the herbal items were collected for cell culture using UMR106 cell, RAW264.7 cell and mesenchymal stem cell （MSC） isolated from the bone marrow of the rats. The effects of the herbal-containing serum on cell toxicity were detected by 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide assay; bromodeoxyuridine assay was conducted to measure the cell proliferation of UMR106 cell and MSC; cell activity was measured using colorimetric method, and mRNA expression of runt-related transcription factor 2 （Runx2）, alkaline phosphatase （ALP） and osteopontin （OPN） of UMR106 and MSC as well as matrix metalloproteinase 9 （MMP-9）, tartrate-resistant acid phosphatase （TRAP） and cathepsin K of RAW264.7 were analyzed using real-time reverse-transcription polymerase chain reaction. Results： ELP and its component serum exhibited no cytotoxic effects on the cells. The ELP-containing serum increased the proliferation of UMR106 cell and MSC by 25.7% and 14.4%, respectively and the alkaline phosphatase activity of MSC was increased by 42.6%. On the contrary, it inhibited the RAW264.7 cell differentiation by 29.2%. ELP serum upregulated the Runx2 expression of UMR and MSC by 1.18 fold and 1.27 fold, respectively. It also upregulated ALP and OPN expression in MSC by 1.69- and 2.12-fold, respectively. On the other hand, ELP serum down-regulated MMP-9 and cathepsin K expression of RAW264.7 cell by 0.46- and 0.36-fold, respectively. Conclusions： The serum of the animals fed with ELP contains active ingredients which are effective in promoting osteogenesis and inhibiting osteoclastogenesis.

关键词： osteoporosis seropharmacology osteogenesis herbal formula

Analysis of inborn errors of metabolism： disease spectrum for expanded newborn screening in Hong Kong

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Chinese Medical Journal 2011年第7期124卷 983-989页

作者： Han-Chih Hencher Lee Chloe Miu Mak Ching-Wan Lam Yuet-Ping Yuen, Angel On-Kei Chan Chi-Chung Shek Tak-Shing siu Chi-Kong Lai Chor-Kwan Ching Wai-Kwan siu Sammy Pak-Lam Chen Chun-Yiu Law Morris Hok-Leung Tai Sidney tam Albert Yan-Wo Chan Chemical Pathology Laboratory Department of Pathology Princess Margaret Hospital Hong Kong SAR China Division of Clinical Biochemistry Queen Mary Hospital Hong Kong SAR China Department of Pathology Li Ka Shing Faculty of Medicine The University of Hong Kong Hong Kong SAR China Chemical Pathology Laboratory Department of Pathology Queen Elizabeth Hospital Hong Kong SAR China

Background Data of classical inborn errors of metabolism （IEM） of amino acids, organic acids and fatty acid oxidation are largely lacking in Hong Kong, where mass spectrometry-based expanded newborn screening for IEM has not been initiated. The current study aimed to evaluate the approximate incidence, spectrum and other characteristics of classical IEM in Hong Kong, which would be important in developing an expanded newborn screening program for the local area.

关键词： biochemical genetics chemical pathology expanded newborn screening Hong Kong," inborn errorsof metabolism tandem mass spectrometry

Cystic meconium peritonitis with jejunoileal atresia:Is it associated with unfavorable outcome?

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World Journal of Clinical Pediatrics 2017年第1期6卷 40-44页

作者： Kin Wai Edwin Chan Kim Hung Lee Hei Yi Vicky Wong siu Yan Bess Tsui Yuen Shan Wong Kit Yi Kristine Pang Jennifer Wai Cheung Mou Yuk Him tam Division of Paediatric Surgery and Paediatric Urology Department of Surgerythe Prince of Wales Hospitalthe Chinese University of Hong Kong

AIM To compare the outcome between patients with jejunoileal atresia(JIA) associated with cystic meconium peritonitis(CMP) and patients with isolated JIA(JIA without CMP).METHODS A retrospective study was conducted for all neonates with JIA operated in our institute from January 2005 to January *** including the gestation age,sex,birth weight,age at operation,the presence of associated syndrome was *** outcome including the type of operation performed,operative time,the need for reoperation and mortality were *** demographics and the outcome between the 2 groups were *** During the study period,53 neonates had JIA underwent operation in our *** neonates(32%) were associated with *** was no statistical difference on the demographics in the two *** with CMP had earlier operation than patients with isolated JIA(mean 1.4 d vs 3 d,P = 0.038).Primaryanastomosis was performed in 16 patients(94%) with CMP and 30 patients(83%) with isolated JIA(P = 0.269).Patients with CMP had longer operation(mean 190 min vs 154 min,P = 0.004).There were no statistical difference the need for reoperation(3 vs 6,P = 0.606) and mortality(2 vs 1,P = 0.269) between the two *** Primary intestinal anastomosis can be performed in94% of patients with JIA associated with *** patients with CMP had longer operative time,the mortality and reoperation rates were low and were comparable to patients with isolated JIA.

关键词： Meconium Peritonitis Atresia Jejunoileal

Laparoscopic excision of Meckel's diverticulum in children:What is the current evidence?

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World Journal of Gastroenterology 2014年第41期20卷 15158-15163页

作者： Kin Wai Edwin Chan Kim Hung Lee Hei Yi Vicky Wong siu Yan Bess Tsui Yuen Shan Wong Kit Yi Kristine Pang Jennifer Wai Cheung Mou Yuk Him tam Division of Paediatric Surgery and Paediatric Urology Department of SurgeryThe Prince of Wales HospitalThe Chinese University of Hong Kong

Complications aroused from Meckel's diverticulum tend to developed in *** presented with abdominal pain,intestinal obstruction,intussusception or gastrointestinal bleeding may actually suffered from complicated Meckel's *** the advancement of minimally invasive surgery(MIS) in children,the use of laparoscopy in the diagnosis and subsequent laparoscopic excision of Meckel's diverticulum has gained ***,single incision laparoscopic surgery(SILS) has emerged as a new technique in minimally invasive *** review offers the overview in the development of MIS in the management of children suffered from Meckel's *** current evidence in different laparoscopic techniques,including conventional laparoscopy,SILS,the use of special laparoscopic instruments,intracorporeal diverticulectomy and extracorporeal diverticulectomy in the management of Meckel's diverticulum in children were revealed.

关键词： Laparoscopy Meckel’s diverticulum Children