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Does photobiomodulation require glucose to work effectively?

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Neural Regeneration Research 2024年第5期19卷 945-946页

作者： Jaimie Hoh kam john Mitrofanis UniversitéGrenoble Alpes Fonds de Dotation ClinatecGrenobleFrance University College London Institute of OphthalmologyUK

A main requirement for cells to function normally is the availability of ***,available either direct from circulation or storage,is converted to the essential energy that cells need to drive critical intrinsic *** cells are deprived of glucose,they become dysfunctional and suffer ***,the use of specific wavelengths of light on body tissues,has been shown to promote,through small organelles called mitochondria,the metabolism of glucose to make energy for cells;this energy can be used to improve cell function and *** this perspective,we hypothesize that the availability of glucose is central to the core mechanism of photobiomodulation;that photobiomodulation is at its most efficient in stimulating mitochondrial activity and improving cell function when there is glucose readily available.

关键词： metabolism distress stimulating

Are chaos and catastrophe theories relevant to environmental sciences?

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Journal of Environmental Sciences 1992年第1期4卷 39-42页

作者： john kaihong kam Morrison Hill P. O. Box 47478 Hong Kong

Data acquired in the area of Environmental Sciences are by their very nature often discontinuous and abrupt. As such, the mathematical theories of catastrophe and chaos may be of use in analyzing such scientific data ... 详细信息

关键词： chaos catastrophe environment.

Proton pump inhibitor use increases mortality and hepatic decompensation in liver cirrhosis

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World Journal of Gastroenterology 2019年第33期25卷 4933-4944页

作者： Marianne Anastasia De Roza Lim kai Jia Wen kam Yiong Huak Chan Andrew Kwek Tiing Leong Ang john Chen Hsiang Department of Gastroenterology and Hepatology Changi General HospitalSinghealth 529889Singapore Clinical Trials and Research Unit Changi General HospitalSinghealth 529889Singapore Biostatistics Unit Yong Loo Lin School of MedicineNational University of SingaporeSingapore 160608Singapore

BACKGROUND Proton pump inhibitors(PPIs)are widely prescribed,often without clear *** are conflicting data on its association with mortality risk and hepatic decompensation in cirrhotic ***,PPI users and PPI exposure in some studies have been poorly defined with many confounding *** To examine if PPI use increases mortality and hepatic decompensation and the impact of cumulative PPI dose *** Data from patients with decompensated liver cirrhosis were extracted from a hospital database between 2013 to *** users were defined as cumulative defined daily dose(cDDD)≥28 within a landmark period,after hospitalisation for hepatic *** regression analysis for comparison was done after propensity score *** risk of hepatic decompensation was analysed by Poisson *** Among 295 decompensated cirrhosis patients,238 were PPI users and 57 were *** users had higher mortality compared to non-users[adjusted HR=2.10,(1.20-3.67);P=0.009].Longer PPI use with cDDD>90 was associated with higher mortality,compared to non-users[aHR=2.27,(1.10-5.14);P=0.038].PPI users had a higher incidence of hospitalization for hepatic decompensation[aRR=1.61,(1.30-2.11);P90 increases the risk of mortality.

关键词： Proton pump inhibitor Liver cirrhosis Mortality Hospitalisation Complications Portal hypertension Variceal bleeding Ascites Spontaneous bacterial peritonitis Hepatic encephalopathy

Suppressing ringing caused by large photomultiplier tube signals

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Chinese Physics C 2012年第3期36卷 235-240页

作者：蒋文奇顾树棣 john Joseph 刘大伟 kam-Biu Luk Herbert Steiner 王铮吴群 University of Science and Technology of China Institute of High Energy Physics Chinese Academy of Sciences Lawrence Berkeley National Laboratory University of Illinois at Urbana-Champaign University of California Illinois Institute of Technology

We describe here the characteristic features of the ringing we observed following large PMT signals in the Daya Bay reactor antineutrino experiment. We conclude that the ceramic capacitors used in the circuitry of the PMT bases and the HV-signal decouplers are the primary cause for this ringing. We present some possible schemes to reduce the ringing when replacing these ceramic capacitors is not feasible.

关键词： PMT ringing piezoelectric Daya Bay antineutrino

Do astrocytes respond to light,sound,or electrical stimulation?

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Neural Regeneration Research 2023年第11期18卷 2343-2347页

作者： Audrey Le Naour Emilien Beziat Jaimie Hoh kam Pierre Magistretti Alim-Louis Benabid john Mitrofanis UniversitéGrenoble Alpes Fonds de dotationClinatecGrenobleFrance King Abdullah University of Science and Technology ThuwalSaudi Arabia Institute of Ophthalmology University College LondonLondonUK

Astrocytes are not only the most populous cell type in the human brain,but they also have the most extensive and dive rse sets of connections,across synapses,axons,blood vessels,as well as having their own internal ***,they are associated with many brain functions;from the synaptic transmission to energy metabolism and fluid homeostasis,and from cerebral blood flow and blood-brain barrier maintenance to neuroprotection,memory,immune defenses and detoxification,slee p,and early *** yet,notwithstanding these key roles,so many current therapeutic approaches to a range of brain disorders have largely neglected their potential *** this review,we consider the role of astrocytes in three brain therapies;two are emerging treatments(photobiomodulation and ultrasound),while the other is well-established(deep brain stimulation).In essence,we explore the issue of whether external sources,such as light,sound,or electricity,can influence the function of astrocytes,as they do *** find that,when taken all together,each of these external sources can influence many,if not,all of the functions associated with *** include influencing neuronal activity,prompting neuroprotection,reducing inflammation(astrogliosis) and potentially increasing cerebral blood flow and stimulating the glymphatic *** suggest that astrocytes,just like neurons,can respond positively to each of these external applications and that their activation co uld each impart many beneficial outcomes on brain function;they are likely to be key playe rs underpinning the mechanisms behind many therapeutic strategies.

关键词： deep brain stimulation high frequency infrared mitochondria red ultrasound

Garcinol suppresses the growth of human hepatocellular carcinoma by inducing abrogation of STAT3 phosphorylation,acetylation and dimerization

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中国药理学与毒理学杂志 2015年第S1期29卷 82-83页

作者： Muthu K SHANMUGAM Snehajyoti CHATTERJEE Peramaiyan RAJENDRAN Feng LI Parijat SENAPATI Kwong Fai WONG Alan Prem KUMAR john MLUK kam Man HUI Gautam SETHI Tapas K KUNDU Department of Pharmacology Yong Loo Lin School of Medicine National University of Singapore Singapore 117957 Jawaharlal Nehru Centre for Advanced Scientific Research Molecular Biology and Genetics Unit Transcription and Disease Laboratory Jakkur P.O. Bangalore 560064 India Cancer Science Institute of Singapore National University of Singapore Singapore 117456 School of Biomedical Sciences Faculty of Health Sciences Curtin University Western Australia Division of Cellular and Molecular Research Humphrey Oei Institute of Cancer Research National Cancer Centre Singapore 169610 Institute of Molecular and Cell Biology Singapore 138673

OBJECTIVE Hepatocellular carcinoma(HCC)is the fifth most common malignancy worldwide and the third cause of global cancer *** of signal transducer and activator of transcription 3(STAT3)is commonly observed in tumor cells and is a critical mediator of on cogenic signaling in HCC and controls the expression of several genes involved in proliferation,survival,metastasis and *** drug-targeted therapies,besides being expensive,are associated with serious side effects and ***,novel agents that can suppress STAT3 activation have potential for both prevention and treatment of *** the present report,we investigated whether the potent HAT/KAT inhibitor,garcinol,(apolyisoprenylatedbenzophenone),could suppress STAT3 activation in HCC cells and in nude mice *** The effect of garcinol on HCC cell lines wasdetermined by MTT assay,immunoblotting,DNA binding assays,immuno-fluorescenceand immune-histochemical *** effect of garcinolon the inhibition of tumor growth in vivo was also investigated using HCCxenograft tumor modelin athymic nu/nu *** We found that garcinol could inhibit constitutive STAT3 activation in a dose-and time-dependent manner both by inhibiting STAT3 phosphorylation and acetylation in HCC *** investigated for molecular mechanism(s),we found that garcinol interferes with the dimer formation of STAT3 thereby inhibits its nuclear *** modeling showed that garcinol could bind to the SH2 domain of STAT3 and suppresses its dimerization in *** understand the cellular mechanism(s)of inhibition of STAT3 function by garcinol,we observed that upon inhibition of STAT3 dimerization bygarcinol,STAT3 DNA binding ability gets *** inhibition of STAT3 activation by garcinol led to the suppression of various gene products involved in proliferation,survival,and ***,when administered i.p.,garcinol inhibited the growth of human HCC xenograft tumors in

关键词： STAT3 HCC garcinol acetylation dimerization nude m

CHANGING PREVALENCE AND PATTERN OF CARDIOVASCULAR DISEASES IN hong KONG: A PERSPECTIVE IN THE 1990s

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中华医学杂志(英文版) 1988年第8期101卷 586-586页

作者： Woo kam-sang Vallance-Owen, john Department of Medicine The Chinese University of Hong Kong Prince of Wales Hospital Hong Kong

The prevalence and pattern of cardiovascular problems in hong Kong are basically those of an ageing subtropical Chinese community, influenced by the impact of westernization and urbanization. Their trends over the past decades have been hall-marked by a decreasing prevalence of rheumatic and congenital heart disease, and a plunging incidence of rheumatic fever, associated with a rapidly increasing prevalence of ischemic and degenerative type of cardiovascular diseases. In the 1990s, rheumatic heart disease will be less prevalent but may still account for 10% of the problem. Ischemic heart disease and degenerative type of lesions will certainly be more commonly seen and account for 40% and 25% respectively, while the prevalence of hypertensive diseases and congenital heart disease may hope fully stays at 10% and 5% levels, respectively.

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Clinical outcomes of patients with two small hepatocellular carcinomas

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World Journal of Hepatology 2021年第10期13卷 1439-1449页

作者： Anh Duy Pham Karl Vaz Zaid S Ardalan Marie Sinclair Ross Apostolov Sarah Gardner Ammar Majeed Gauri Mishra Ning Mao kam Kurvi Patwala Numan Kutaiba Niranjan Arachchi Sally Bell Anouk T Dev john S Lubel Amanda J Nicoll Siddharth Sood William Kemp Stuart K Roberts Michael Fink Adam G Testro Peter W Angus Paul J Gow The Victorian Liver Transplant Unit Austin HealthHeidelberg 3084VictoriaAustralia Department of Gastroenterology Alfred HealthMelbourne 3000VictoriaAustralia The Melbourne Liver Group Melbourne 3000VictoriaAustralia The University of Melbourne Parkville 3010VictoriaAustralia Central Clinical School Monash UniversityMelbourne 3004VictoriaAustralia Department of Gastroenterology and Hepatology Monash HealthClayton 3168VictoriaAustralia Department of Radiology Austin HealthHeidelberg 3084VictoriaAustralia Department of Radiology Eastern HealthBox Hill 3128VictoriaAustralia Department of Gastroenterology Western HealthFootscray 3011VictoriaAustralia Department of Gastroenterology Eastern HealthBox Hill 3128VictoriaAustralia Department of Gastroenterology Royal Melbourne HospitalParkville 3050VictoriaAustralia

BACKGROUND Management of single small hepatocellular carcinoma(HCC)is straightforward with curative outcomes achieved by locoregional therapy or *** transplantation is often considered for multiple small or single large *** of two small HCC whether presenting synchronously or sequentially is less *** To define the outcomes of patients presenting with two small *** Retrospective review of HCC databases from multiple institutions of patients with either two synchronous or sequential HCC≤3 cm between January 2000 and March *** outcomes were overall survival(OS)and transplant-free survival(TFS).RESULTS 104 patients were identified(male n=89).Median age was 63 years(interquartile range 58-67.75)and the most common aetiology of liver disease was hepatitis C(40.4%).59(56.7%)had synchronous HCC and 45(43.3%)had sequential.36 patients died(34.6%)and 25 were transplanted(24.0%).1,3 and 5-year OS was 93.0%,66.1% and 62.3% and 5-year post-transplant survival was 95.8%.1,3 and 5-year TFS was 82.1%,45.85% and 37.8%.When synchronous and sequential groups were compared,OS(1,3 and 5 year synchronous 91.3%,63.8%,61.1%,sequential 95.3%,69.5%,64.6%,P=0.41)was similar but TFS was higher in the sequential group(1,3 and 5 year synchronous 68.5%,37.3% and 29.7%,sequential 93.2%,56.6%,48.5%,P=0.02)though this difference did not remain during multivariate *** TFS in patients presenting with two HCC≤3 cm is poor regardless of the timing of the second *** patients presenting with two small HCC should be considered for transplantation.

关键词： Hepatocellular carcinoma Liver cancer Prognosis Transplantation Transplant-free survival

Akt-RSK-S6-kinase Signaling Networks Activated by Oncogenic Receptor Tyrosine Kinases

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Akt-RSK-S6-kinase Signaling Networks Activated by Oncogenic ...