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Post-appendectomy pelvic abscess with extended-spectrum beta-lactamase producing Escherichia coli : A case report and review of literature

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World Journal of Clinical Cases 2018年第16期6卷 1175-1181页

作者： andrew tse Rajkumar Cheluvappa Selwyn Selvendran Department of Surgery St George Public Hospital St George and Sutherland Clinical School University of New South Wales BN Program Discipline of Nursing and Midwifery University of Canberra

BACKGROUND Appendicitis, the inflammation of the appendix, is the most common abdominal surgical emergency requiring expedient surgical intervention. Extendedspectrum beta-lactamases(ESBLs) are bacterial enzymes that catalyse the degradation of the betalactam ring of penicillins and cephalosporins(but without carbapenemase activity), leading to resistance of these bacteria to beta-lactam antibiotics. Recent increases in incidence of ESBL-producing bacteria have caused alarm worldwide. Proportion estimates of ESBLEnterobacteriaceae hover around 46% in China, 42% in East Africa, 12% in Germany, and 8% in the United *** SUMMARY The impact of ESBL-producing bacteria on appendiceal abscesses and consequent pelvic abscesses are yet to be examined in depth. A literature review using the search words "appendiceal abscesses" and "ESBL Escherichia coli(E. coli)" revealed very few cases involving ESBL E. coli in any capacity in the context of appendiceal abscesses. This report describes the clinical aspects of a patient with appendicitis whodeveloped a postoperative pelvic abscess infected with ESBL-producing E. coli. In this report, we discuss the risk factors for contracting ESBL E. coli infection in appendicitis and post-appendectomy pelvis abscesses. We also discuss our management approach for postappendectomy ESBL E. coli pelvic abscesses, including drainage, pathogen identification, and pathogen characterisation. When ESBL E. coli is confirmed, carbapenem antibiotics should be promptly administered, as was done efficaciously with this patient. Our report is the first one in a developed country involving ESBL E. coli related surgical complications in association with a routine laparoscopic *** Our report is the first involving ESBL E. coli and appendiceal abscesses, and that too consequent to laparoscopic appendectomy.

关键词： Appendectomy Appendiceal abscess Appendicitis Beta-Lactam Antibiotic resistance Beta-Lactamase Carbanepem Cephalosporin Escherichia coli Extended-spectrum beta-lactamase Infection Pelvic abscess Penicillin Case report

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A novel alcohol dehydrogenase in the hyperthermophilic crenarchaeon Hyperthermus butylicus

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mLife 2024年第2期3卷 317-325页

作者： Ching tse Kesen Ma Department of Biology University of WaterlooWaterlooOntarioCanada

Hyperthermus butylicus is a hyperthermophilic crenarchaeon that produces 1-butanol as an end product.A thermostable alcohol dehydrogenase(ADH)must be present in *** to act as the key enzyme responsible for this production;however,the gene that encodes the ADH has not yet been identified.A novel ADH,HbADH2,was purified from a cell-free extract of ***,and its characteristics were *** gene that encodes HbADH2 was demonstrated to be HBUT_RS04850 and annotated as a hypothetical protein in ***2 was found to be a primary-secondary ADH capable of using a wide range of substrates,including butyraldehyde and *** had the highest specificity constant,calculated as k_(cat)/K_(m),with kcat and apparent K_(m) values of 8.00±0.22 s^(-1) and 0.59±0.07 mM,*** apparent Km values for other substrates,including ethanol,1-propanol,2-propanol,butanol,acetaldehyde,propanal,and acetone,were 4.36±0.42,4.69±0.41,3.74±0.46,2.44±0.30,1.27±0.18,1.55±0.20,and 0.68±0.04 mM,*** optimal pH values for catalyzing aldehyde reduction and alcohol oxidation were 6.0 and 9.0,respectively,while the optimal temperature was higher than 90°C due to the increase in enzymatic activity from 60℃ to 90℃.Based on its substrate specificity,enzyme kinetics,and thermostability,HbADH2 may be the ADH that catalyzes the production of 1-butanol in *** putative conserved motif sites for NAD(P)^(+)and iron binding were identified by aligning HbADH2 with previously characterized Fe-containing ADHs.

关键词： butanol hyperthermophile Hyperthermus butylicus novel alcohol dehydrogenase thermostability

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Neural Regeneration Research 2025年第2期20卷 366-377页

作者： Samuel Abokyi Dennis Yan-yin tse School of Optometry The Hong Kong Polytechnic UniversityKowloonHong Kong Special Administrative RegionChina Research Center for SHARP Vision The Hong Kong Polytechnic UniversityKowloonHong Kong Special Administrative RegionChina Center for Eye and Vision Research Sha TinHong Kong Special Administrative RegionChina

Retinal aging has been recognized as a significant risk factor for various retinal disorders,including diabetic retinopathy,age-related macular degeneration,and glaucoma,following a growing understanding of the molecular underpinnings of their *** comprehensive review explores the mechanisms of retinal aging and investigates potential neuroprotective approaches,focusing on the activation of transcription factor *** meta-analyses have demonstrated promising outcomes of transcription factor EB-targeted strategies,such as exercise,calorie restriction,rapamycin,and metformin,in patients and animal models of these common retinal *** review critically assesses the role of transcription factor EB in retinal biology during aging,its neuroprotective effects,and its therapeutic potential for retinal *** impact of transcription factor EB on retinal aging is cell-specific,influencing metabolic reprogramming and energy homeostasis in retinal neurons through the regulation of mitochondrial quality control and nutrient-sensing *** vascular endothelial cells,transcription factor EB controls important processes,including endothelial cell proliferation,endothelial tube formation,and nitric oxide levels,thereby influencing the inner blood-retinal barrier,angiogenesis,and retinal ***,transcription factor EB affects vascular smooth muscle cells,inhibiting vascular calcification and *** retinal pigment epithelial cells,transcription factor EB modulates functions such as autophagy,lysosomal dynamics,and clearance of the aging pigment lipofuscin,thereby promoting photoreceptor survival and regulating vascular endothelial growth factor A expression involved in *** cell-specific functions of transcription factor EB significantly impact retinal aging mechanisms encompassing proteostasis,neuronal synapse plasticity,energy metabolism,microvasculature,and inflammation,ultimately offering pro

关键词： age-related macular degeneration anti-aging interventions autophagy calorie restriction diabetic retinopathy exercise glaucoma neuromodulation phagocytosis photoreceptor outer segment degradation retinal aging transcription factor EB

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Lottery Numbers and Ordered Statistics

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Applied Mathematics 2024年第4期15卷 287-291页

作者： Kung-Kuen tse Department of Mathematics Kean University Union NJ USA

The lottery has long captivated the imagination of players worldwide, offering the tantalizing possibility of life-changing wins. While winning the lottery is largely a matter of chance, as lottery drawings are typically random and unpredictable. Some people use the lottery terminal randomly generates numbers for them, some players choose numbers that hold personal significance to them, such as birthdays, anniversaries, or other important dates, some enthusiasts have turned to statistical analysis as a means to analyze past winning numbers identify patterns or frequencies. In this paper, we use order statistics to estimate the probability of specific order of numbers or number combinations being drawn in future drawings.

关键词： Lottery Order Statistics Hypergeometric Distribution Expectation Uniform

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Solvent-Free Manufacturing of Lithium-Ion Battery Electrodes via Cold Plasma

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Energy & Environmental Materials 2024年第1期7卷 28-33页

作者： Zhiming Liang Tianyi Li Holden Chi Joseph Ziegelbauer Kai Sun Ming Wang Wei Zhang Tuo Liu Yang-tse Cheng Zonghai Chen Xiaohong Gayden Chunmei Ban Paul M.Rady Department of Mechanical Engineering University of Colorado BoulderBoulder CO 80309USA Advanced Photon Source Argonne National LaboratoryLemont IL 60439USA Intecells Inc. Southfield MI 48084USA Department of Materials Science and Engineering Michigan Center for Materials CharacterizationUniversity of MichiganAnn Arbor MI 48109USA Department of Chemical and Materials Engineering University of KentuckyLexington KY 40506USA Department of Chemistry University of KentuckyLexington KY 40506USA Chemical Sciences and Engineering Division Argonne National LaboratoryLemont IL 60439USA

Slurry casting has been used to fabricate lithium-ion battery electrodes for decades,which involves toxic and expensive organic solvents followed by high-cost vacuum drying and electrode *** work presents a new manufacturing method using a nonthermal plasma to create inter-particle binding without using any polymeric binding materials,enabling solvent-free manufacturing electrodes with any electrochemistry of *** cold-plasma-coating technique enables fabricating electrodes with thickness(>200 pm),high mass loading(>30 mg cm^(-2)),high peel strength,and the ability to print lithium-ion batteries in an arbitrary *** crosscutting,chemistry agnostic,platform technology would increase energy density,eliminate the use of solvents,vacuum drying,and calendering processes during production,and reduce manufacturing cost for current and future cell ***,lithium iron phosphate and lithium cobalt oxide were used as examples to demonstrate the efficacy of the cold-plasma-coating *** is found that the mechanical peel strength of cold-plasma-coating-manufactured lithium iron phosphate is over an order of magnitude higher than that of slurry-casted lithium iron phosphate *** cells assembled with a graphite anode and the cold-plasma-coating-lithium iron phosphate cathode offer highly reversible cycling performance with a capacity retention of 81.6%over 500 *** the highly conductive cathode material lithium cobalt oxide,an areal capacity of 4.2 mAh cm^(-2)at 0.2 C is *** anticipate that this new,highly scalable manufacturing technique will redefine global lithium-ion battery manufacturing providing significantly reduced plant footprints and material costs.

关键词： cold plasma deposition lithium-ion battery solvent-free manufacturing

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Microplastic exposure disturbs sleep structure,reduces lifespan,and decreases ovary size in Drosophila melanogaster

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Zoological Research 2024年第4期45卷 805-820页

作者： Wei Yan Zi-Jie Li Zi-Yi Lin Shu-Qin Ji William Ka Fai tse Zhi-Qiang Meng Chang Liu Lei Li Shenzhen-Hong Kong Institute of Brain Science Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong 518000China CAS Key Laboratory of Brain Connectome and Manipulation the Brain Cognition and Brain Disease InstituteShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong 518000China Laboratory of Developmental Disorders and Toxicology Center for Promotion of International Education and ResearchFaculty of AgricultureKyushu UniversityFukuokaFukuoka 819-0395Japan Shenzhen Key Laboratory of Drug Addiction the Brain Cognition and Brain Disease InstituteShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong 518000China Guangdong Provincial Key Laboratory of Brain Connectome and Behavior Brain Cognition and Brain Disease InstituteShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong 518000China

The organ-specific toxicity resulting from microplastic(MP)exposure has been extensively explored,particularly concerning the gut,liver,testis,and ***,under natural conditions,these effects are not restricted to specific organs or *** whether MP exposure presents a systemic threat to an entire organism,impacting factors such as lifespan,sleep,and fecundity,is *** this study,we investigated the effects of dietary exposure to two different doses of MPs(1–5μm)using the terrestrial model organism Drosophila *** indicated that the particles caused gut damage and remained within the digestive *** MP exposure significantly shortened the lifespan of adult *** short-term exposure disrupted sleep patterns,increasing the length of daytime sleep ***,one week of MP exposure reduced ovary size,with a trend towards decreased egg-laying in mated *** MPs did not penetrate the brain or ovaries,transcriptome analysis revealed altered gene expression in these *** the ovary,Gene Ontology(GO)analysis indicated genotoxic effects impacting inflammation,circadian regulation,and metabolic processes,with significant impacts on extracellular structure-related *** the brain,GO analysis identified changes in pathways associated with proteolysis and carbohydrate ***,this study provides compelling evidence of the systemic negative effects of MP exposure,highlighting the urgent need to address and mitigate environmental MP pollution.

关键词： Microplastics Sleep Lifespan Reproduction Risk assessment Drosophila melanogaster

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Prognostic value of cardiovascular magnetic resonance in immune checkpoint inhibitor-associated myocarditis:A systematic review and meta-analysis

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Cancer Innovation 2024年第3期3卷 22-32页

作者： Wenhua Song Nan Zhang Tonglian Lv Yang Zhao Guangping Li Gary tse Tong Liu Tianjin Key Laboratory of Ionic-Molecular Function of Cardiovascular Disease Department of CardiologyTianjin Institute of CardiologySecond Hospital of Tianjin Medical UniversityTianjinChina Department of Radiology Second Hospital of Tianjin Medical UniversityTianjinChina School of Nursing and Health Studies Hong Kong Metropolitan UniversityHong KongChina Cardiac Electrophysiology Unit Cardiovascular Analytics GroupPowerHealth LimitedHong KongChina

Background:The role of surgery in metastatic breast cancer(MBC)is currently *** novel statistical and deep learning(DL)methods promise to infer the suitability of surgery at the individual ***:The objective of this study was to identify the most applicable DL model for determining patients with MBC who could benefit from surgery and the type of surgery ***:We introduced the deep survival regression with mixture effects(DSME),a semi-parametric DL model integrating three causal inference *** models were trained to make individualized treatment *** who received treatments in line with the DL models'recommendations were compared with those who underwent treatments divergent from the *** probability weighting(IPW)was used to minimize *** effects of various features on surgery selection were visualized and quantified using multivariate linear regression and causal ***:In total,5269 female patients with MBC were *** was an independent protective factor,outperforming other models in recommend-ing surgery(IPW-adjusted hazard ratio[HR]=0.39,95%confidence interval[CI]:0.19–0.78)and type of surgery(IPW-adjusted HR=0.66,95%CI:0.48–0.93).DSME was superior to other models and traditional guidelines,suggesting a higher proportion of patients benefiting from surgery,especially breast-conserving *** debiased effect of patient characteristics,including age,tumor size,metastatic sites,lymph node status,and breast cancer subtypes,on surgery decision was also ***:Our findings suggested that DSME could effectively identify patients with MBC likely to benefit from surgery and the specific type of surgery *** method can facilitate the development of efficient,reliable treatment recommendation systems and provide quantifiable evidence for decision-making.

关键词： breast surgery causal inference deep learning metastatic breast cancer

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Cellular zinc metabolism and zinc signaling:from biological functions to diseases and therapeutic targets

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Signal Transduction and Targeted Therapy 2024年第2期9卷 401-441页

作者： Bonan Chen Peiyao Yu Wai Nok Chan Fuda Xie Yigan Zhang Li Liang Kam Tong Leung Kwok Wai Lo Jun Yu Gary M.K.tse Wei Kang Ka Fai To Department of Anatomical and Cellular Pathology State Key Laboratory of Translational OncologyPrince of Wales HospitalThe Chinese University of Hong KongHong KongChina State Key Laboratory of Digestive Disease Institute of Digestive DiseaseThe Chinese University of Hong KongHong KongChina CUHK-Shenzhen Research Institute The Chinese University of Hong KongShenzhenChina Department of Pathology Nanfang Hospital and Basic Medical CollegeSouthern Medical UniversityGuangdong Province Key Laboratory of Molecular Tumor PathologyGuangzhouChina Institute of Biomedical Research Taihe HospitalHubei University of MedicineShiyanChina Department of Pediatrics The Chinese University of Hong KongHong KongChina Department of Medicine and Therapeutics The Chinese University of Hong KongHong KongChina

Zinc metabolism at the cellular level is critical for many biological processes in the body.A key observation is the disruption of cellular homeostasis,often coinciding with disease *** an essential factor in maintaining cellular equilibrium,cellular zinc has been increasingly spotlighted in the context of disease *** research suggests zinc’s involvement in promoting malignancy and invasion in cancer cells,despite its low tissue *** has led to a growing body of literature investigating zinc’s cellular metabolism,particularly the functions of zinc transporters and storage mechanisms during cancer *** transportation is under the control of two major transporter families:SLC30(ZnT)for the excretion of zinc and SLC39(ZIP)for the zinc ***,the storage of this essential element is predominantly mediated by metallothioneins(MTs).This review consolidates knowledge on the critical functions of cellular zinc signaling and underscores potential molecular pathways linking zinc metabolism to disease progression,with a special focus on *** also compile a summary of clinical trials involving zinc *** the main localization of zinc transporters at the cell membrane,the potential for targeted therapies,including small molecules and monoclonal antibodies,offers promising avenues for future exploration.

关键词： metabolism invasion involvement

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Role of angiotensin receptor-neprilysin inhibitor in diabetic complications

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World Journal of Diabetes 2024年第5期15卷 867-875页

作者： Ying Liu Cun-Yu Lu Yi Zheng Yu-Min Zhang Ling-Ling Qian Ku-Lin Li Gary tse Ru-Xing Wang Tong Liu Department of Cardiology Tianjin Key Laboratory of Ionic-Molecular Function of Cardiovascular DiseaseTianjin Institute of CardiologySecond Hospital of Tianjin Medical UniversityTianjin 300211China Department of Cardiology Xuzhou No.1 Peoples HospitalXuzhou 221005Jiangsu ProvinceChina Department of Cardiology Wuxi 9^(th)People’s Hospital Affiliated to Soochow UniversityWuxi 214062Jiangsu ProvinceChina Department of Cardiology Wuxi People’s Hospital Affiliated to Nanjing Medical UniversityWuxi 214023Jiangsu ProvinceChina School of Nursing and Health Studies Metropolitan UniversityHong Kong 999077China Kent and Medway Medical School Kent CT27NTCanterburyUnited Kingdom

Diabetes mellitus is a prevalent disorder with multi-system manifestations,causing a significant burden in terms of disability and deaths ***-tensin receptor-neprilysin inhibitor(ARNI)belongs to a class of medications for treating heart failure,with the benefits of reducing hospitalization rates and *** review mainly focuses on the clinical and basic investigations related to ARNI and diabetic complications,discussing possible physiological and molecular mechanisms,with insights for future applications.

关键词： Angiotensin receptor-neprilysin inhibitor Diabetic mellitus Complication

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Hypokalemia Havoc: Unraveling the Mystery of Unexplained Potassium Depletion

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Case Reports in Clinical Medicine 2024年第8期13卷 292-296页

作者： Justin David tse Maryam Shams Mushgan Nassiri Jackson Wang Department of Graduate Medical Education Internal Medicine Residency Sutter Roseville Medical Center Roseville CA USA Summit Nephrology Roseville CA USA

Hypokalemia, defined as serum potassium below 3.5 mEq/L, can lead to severe complications such as arrhythmias and muscle paralysis, potentially resulting in rhabdomyolysis. The etiology of hypokalemia is often multifactorial, involving but not limited to gastrointestinal losses, renal losses, medication effects, and inadequate dietary intake. Chronic heavy alcohol use, obstructive sleep apnea (OSA), and the use of diuretics such as hydrochlorothiazide (HCTZ) are also significant contributing factors. Effective management requires thorough evaluation and investigation to effectively treat a patient. This case report aims to illustrate the diagnostic challenges and comprehensive treatment approach required in a patient with multiple comorbidities and severe hypokalemia, emphasizing the need for a multidisciplinary and comprehensive approach to address all underlying causes.

关键词： Severe Hypokalemia Electrolyte Derangements Thiazide Diuretic Complications Potassium Repletion

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