1.Testing And Treating Helicobacter Pylori Infection
James Li Weiquan, Christopher Jen Lock Khor
The Singapore Family Physician 2017;43(2):52-54
Helicobacter pylori (H. pylori) is an important pathogen in the stomach which can cause chronic inflammation, predisposing patients to peptic ulcer disease. It is also a class 1 human carcinogen, increasing the risk of gastric carcinoma. Eradication of H. pylori has been shown to be effective in the prevention of peptic ulcer disease as well as gastric carcinoma. Singapore is an intermediate-risk area for gastric cancer, and the seroprevalence of H. pylori infection is 31 percent. Testing for H. pylori consists of non-invasive tests such as H. pylori serology, stool antigen assay, and the urea breath test, as well as invasive tests requiring oesophago-gastro-duodenoscopy (OGD) and biopsies for the rapid urease test, histology, and cultures. Stool antigen assay represents a more accurate non-invasive outpatient test for H. pylori at slightly increased cost in the primary care setting, as positive H. pylori serology does not necessarily imply active infection. Triple therapy remains an effective first-line eradication treatment in Singapore from studies of H. pylori resistance locally. Treatment failures should be retreated with quadruple therapy or other strategies such as concomitant therapy, hybrid therapy and sequential therapy.
2.Primary sclerosing cholangitis:A review and update
H.Tabibian JAMES ; L.Bowlus CHRISTOPHER
Liver Research 2017;1(4):221-230
Primary sclerosing cholangitis(PSC)is a rare,chronic,cholestatic liver disease of uncertain etiology characterized biochemically by cholestasis and histologically and cholangiographically by fibro-obliterative inflammation of the bile ducts.In a clinically significant proportion of patients,PSC pro-gresses to cirrhosis,end-stage liver disease,and/or hepatobiliary cancer,though the disease course can be highly variable.Despite clinical trials of numerous pharmacotherapies over several decades,safe and effective medical therapy remains to be established.Liver transplantation is an option for select patients with severe complications of PSC,and its outcomes are generally favorable.Periodic surveillance testing for pre-as well as post-transplant patients is a cornerstone of preventive care and health maintenance.Here we provide an overview of PSC,including its epidemiology,etiopathogenesis,clinical features,associated disorders,surveillance,and emerging potential therapies.
3.Technical Cooperation on Antiretroviral Therapy Scale Up in Zambia
Ikuma NOZAKI ; Kazuhiro KAKIMOTO ; Christopher DUBE ; Charles MSISUKA ; Tamotsu NAKASA ; James B SIMPUNGWE
Journal of International Health 2010;25(2):99-105
Zambia is one of the HIV high burden countries in Sub Saharan Africa. Government of Zambia has been expanding Antiretroviral Therapy (ART) service nationwide at district level. However, it is still hard to access to ART service for PLHIVs who live in rural. In terms of accessibility, the service must be expanded to rural health centre level, but there are many challenges to expand the quality services into such resource limited setting, especially in the shortage of health providers.
JICA's “Integrated HIV and AIDS Care Implementation Project at District Level” launched at April 2006 to improve the quality and accessibility of HIV and AIDS care services in rural Zambia. Two districts in rural area, namely Mumbwa and Chongwe, were selected as project sites. The Project introduced the “mobile ART service” at rural health centre level using the existing health system. Mobile ART services enable a rural health centre that cannot offer ART by itself to provide ART services through the human resource and technical support/assistance of the District Hospital. Mumbwa and Chongwe District Health Management Team (DHMT) started mobile ART services in the first Quarter of 2007, therefore access to ART service in districts has been improved and contributed to increase of ART clients and reduce the defaulter rate within first 6 months of treatment. The project also tried to introduce the community involvement to overcome the shortage of human resources.
We found that Mobile ART services involving the community are beneficial and effective, and help ART services expansion to rural health facilities where resources are limited, and as close as possible to places where clients live. The strategies we experienced were cited in “the National Mobile HIV Services Guidelines” published by the MoH and will be able to be duplicated in other resource-limited areas of not only Zambia but also other developing countries.
4.Preventative care in cholestatic liver disease:Pearls for the specialist and subspecialist
Malik ADNAN ; A.Kardashian ANI ; Zakharia KAIS ; L.Bowlus CHRISTOPHER ; H.Tabibian JAMES
Liver Research 2019;3(2):118-127
Cholestatic liver diseases(CLDs)encompass a variety of disorders of abnormal bile formation and/or flow.CLDs often lead to progressive hepatic insult and injury and following the development of cirrhosis and associated complications.Many such complications are clinically silent until they manifest with severe sequelae,including but not limited to life-altering symptoms,metabolic disturbances,cirrhosis,and hepatobiliary diseases as well as other malignancies.Primary sclerosing cholangitis(PSC)and primary biliary cholangitis(PBC)are the most common CLDs,and both relate to mutual as well as unique complications.This review provides an overview of PSC and PBC,with a focus on preventive measures aimed to reduce the incidence and severity of disease-related complications.
5.Measles outbreak investigation in a remote area of Solomon Islands, 2014
Diau Jason ; Jimuru Christopher ; Asugeni James ; Asugeni Lyndell ; Puia Mike ; Maomatekwa John ; Harrington Humpress ; MacLaren David ; Speare Rick
Western Pacific Surveillance and Response 2015;6(3):17-21
Objective:To describe a measles outbreak and health service response in a remote location in Malaita, Solomon Islands.Introduction:Measles is a highly infectious, acute airborne viral disease with an infectious period of four days before to four days after rash onset. It has an incubation period of 10–14 days. Measles can be a serious illness with complications including otitis media, pneumonia and encephalitis.
6.Adreno-Muscarinic Synergy of Contractile Responses From Human Hyperplastic Prostate
Ben T. BLAKE-JAMES ; Basu CHAKRABARTY ; Christopher H. FRY
International Neurourology Journal 2024;28(Suppl 1):46-54
Purpose:
Adreno-muscarinic synergy, a supra-additional contractile response to simultaneous application of α-adrenoreceptor and muscarinic receptor agonists, is a feature of several lower urinary tract regions that have dual sympathetic and parasympathetic innervation. We tested the hypothesis that synergy is also a feature of prostate tissue obtained from men with benign prostatic enlargement.
Methods:
Isolated tissue strips were dissected from prostate ‘chips’, collected after transurethral prostate resection procedures for in vitro experiments, to measure isometric tension at 36°C.
Results:
Added separately to the superfusate, phenylephrine and carbachol generated contractions with mean pEC50 (-log10EC50) values of 5.36 and 5.58, respectively, although phenylephrine maximal responses were about six-fold greater. In the presence of carbachol, the mean phenylephrine pEC50 was significantly increased to 5.84 and maximal response increased by 28%; overall, a significant synergistic response was demonstrated. The synergistic response was reduced by muscarinic receptor antagonists, most potently by the M3-selective agent 4-DAMP (1,1-dimethyl-4-diphenylacetoxypiperidinium iodide), and less so by M2 and M1-selective inhibitors gallamine and pirenzepine, but with an overall profile indicating M3/M2 mediation of the synergistic response. The magnitude of the synergistic response was variable between prostate chips that provided isolated preparations suggesting regional heterogenicity, although their zonal origin could not be determined.
Conclusions
These experiments show that adreno-muscarinic contractile synergy is a feature of human hyperplastic prostate tissue. This has implications for the use of a combination therapy of α-blockers and anti-muscarinic agent to relieve secondary symptoms associated with benign prostatic hyperplasia, at least in men who can tolerate antimuscarinics without a risk of retention.
7.Computer-assisted design of therapeutic personalized footwear for diabetic foot:a preliminary study
Xu WANG ; Xin MA ; Lijie MA ; Li CHEN ; Chao ZHANG ; Jiazhang HUANG ; Xiangjie GU ; Jianyu JIANG ; Dongmei WANG ; Chengtao WANG ; Kai TAO ; James CHRISTOPHER ; Williams ANITA ; Liu ANMIN
Chinese Journal of Orthopaedics 2011;31(5):514-519
Objective To explore the outcomes of computer-assisted design of therapeutic personalized footwear for diabetic foot.Methods Fifty-eight cases of diabetic foot were included in the study.Ten items of data from theses patients were measured with methods provided by Salford University.All characteristics of the footwear were calculated with computer.Shoes were specially designed with the formula and computational method provided by Safford university.All patients had worn the shoes for 13 months.Special questionnaires were used to measure the outcomes.Results Thirty-two cases had been followed up for one month,25 cases for 2 months,25 cases for 3 months and 42 cases for 13 months.The score had improved from 67.94±15.14 before wearing the shoes to 78.13±1.44 thirteen months after wearing.The health score of the foot had improved.There was significant difference between before and after wearing the footwears.Conclusion Special-designed diabetic shoes play an important role in the prevention of ulcer for diabetic foot patients.Computational method and data model obtained from Salford university needs to be modified when applying it for Chinese.
8.The Efficacy of Medial Patellofemoral Ligament Reconstruction Combined with Tibial Tuberosity Transfer in the Treatment of Patellofemoral Instability
Tarek BOUTEFNOUCHET ; Christopher DOWNHAM ; James BASSETT ; Peter THOMPSON ; Andrew SPROWSON
The Journal of Korean Knee Society 2016;28(2):99-109
A systematic review of the literature was undertaken to evaluate the efficacy of medial patellofemoral ligament (MPFL) reconstruction combined with tibial tuberosity transfer (TTT) in the treatment of patellofemoral instability. Using PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines, a systematic search was carried out to identify and review the published literature pertinent to MFPL reconstruction combined with TTT. Relevant studies were critically appraised with narrative data synthesis. Studies that met the eligibility criteria were suitable for appraisal and consisted of case series and therapeutic series (levels IV & III). All studies had inherent variations in outcomes reporting and limited follow-up. Combined treatment offers restoration of normal anatomy, thus adding clinical value to the currently recommended anatomic approach to MPFL reconstruction. Nevertheless, the current body of evidence does not determine the threshold at which patellofemoral axis requires the need for adjunctive distal realignment as opposed to MPFL reconstruction alone. This review highlighted numerous recurring limitations in the conduct and presentation of the studies, which inadvertently mitigated the interpretation of their results. Future priority should be awarded to larger randomised controlled trials utilising validated patient reported outcome measures.
Awards and Prizes
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Follow-Up Studies
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Humans
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Ligaments
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Outcome Assessment (Health Care)
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Patellar Dislocation