51
|
Heise T, Nosek L, Gable J, Lim G, Calentine C. ICU glucose monitoring measured in plasma using mid-infrared spectroscopy. Crit Care 2010. [PMCID: PMC2934251 DOI: 10.1186/cc8812] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
52
|
Hartman M, Hartman M, Lim G, Czene K, Bhalla V, Chow K, Yap K, Chia K, Chia K, Verkooijen H, Verkooijen H, Verkooijen H. Childbirth Following Breast Cancer: An Evaluation of the 'Healthy Mothers' Excess Mortality Risk. Cancer Res 2009. [DOI: 10.1158/0008-5472.sabcs-09-3173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: The favorable outcome of mothers giving birth after breast cancer compared to those who do not, has been attributed to a healthy mother effect. Mainly former breast cancer patients with excellent health status and outlook proceed to having children after their disease. This study evaluates the excess mortality risk among these 'healthy mothers' and factors modifying this risk.Methods: By linking the Singapore Birth Registry (319'437 individuals) and Swedish Multi-Generation Cohort (11 million women) with the respective national cancer registries we identified all 509 women who gave birth >12 months after a breast cancer diagnosis. We calculated excess absolute mortality risks and Standardized Mortality Ratios (SMRs). We used Poisson regression analysis to calculate relative risks of death by country, period of follow up and interval between cancer diagnosis and subsequent birth.Results: The overall 15-year cumulative mortality was 18.2% (95% CI: 13.3 – 20.7%) which is substantially higher than that of the background population (SMR 13.3, 95%CI: 10.4-16.9). Excess mortality risks remained constant over follow up time and were comparable between Sweden and Singapore. Mortality risks decreased significantly with increasing interval between diagnosis and subsequent birth.Conclusion: Despite being 'healthy mothers', women who give birth after a diagnosis of breast cancer have a substantially higher risk of death than the background population. This information may be useful in a woman's decision whether to have a(another) child after breast cancer.
Citation Information: Cancer Res 2009;69(24 Suppl):Abstract nr 3173.
Collapse
|
53
|
Lavoie C, Migchielsen J, Lim G, Vines D, Breen S, Freeman M, Bezjak A, Cho J, Brade A, Hope A, Aerts H, Dekker A, Sun A. 85 PRE-RADIATION TREATMENT PET/CT SCAN CAN PREDICT THE LOCALIZATION OF RESIDUAL DISEASE POST-TREATMENT IN LUNG CANCER. Radiother Oncol 2009. [DOI: 10.1016/s0167-8140(12)72472-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
54
|
Sukarom S, Lim G. 275: Outcome of Head Injury Patients With Glasgow Coma Score of 15 in the Emergency Department. Ann Emerg Med 2008. [DOI: 10.1016/j.annemergmed.2008.06.294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
55
|
Sun A, Lim G, Wysocka B, Vines D, Freeman M, Bezjak A, Cho J, Brade A, Hope A, Breen S. A Pilot Prospective Study of Metabolic and Anatomic Response using FDG PET CT before, during and after Radiotherapy in Lung Cancer. Int J Radiat Oncol Biol Phys 2008. [DOI: 10.1016/j.ijrobp.2008.06.1854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
56
|
Czeczuga B, Lim G, Tan TK, Streimann H, Jenie UA, Gruezo WS. Carotenoids in certain species of lichen from tropical region. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/fedr.19941050117] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
57
|
Vukovic B, Beheshti B, Park P, Lim G, Bayani J, Zielenska M, Squire JA. Correlating breakage-fusion-bridge events with the overall chromosomal instability and in vitro karyotype evolution in prostate cancer. Cytogenet Genome Res 2007; 116:1-11. [PMID: 17268171 DOI: 10.1159/000097411] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2006] [Accepted: 07/07/2006] [Indexed: 01/20/2023] Open
Abstract
Chromosomal instability (CIN) is thought to underlie the generation of chromosomal changes and genomic heterogeneity during prostatic tumorigenesis. The breakage-fusion-bridge (BFB) cycle is one of the CIN mechanisms responsible for characteristic mitotic abnormalities and the occurrence of specific classes of genomic rearrangements. However, there is little detailed information concerning the role of BFB and CIN in generating genomic diversity in prostate cancer. In this study we have used molecular cytogenetic methods and array comparative genomic hybridization analysis (aCGH) of DU145, PC3, LNCaP, 1532T and 1542T to investigate the in vitro role of BFB as a CIN mechanism in karyotype evolution. Analysis of mitotic structures in all five prostate cancer cell lines showed increased frequency of anaphase bridges and nuclear strings. Structurally rearranged dicentric chromosomes were observed in all of the investigated cell lines, and Spectral Karyotyping (SKY) analysis was used to identify the participating rearranged chromosomes. Multicolor banding (mBAND) and aCGH analysis of some of the more complex chromosomal rearrangements and associated amplicons identified inverted duplications, most frequently involving chromosome 8. Chromosomal breakpoint analysis showed there was a higher frequency of rearrangement at centromeric and pericentromeric genomic regions. The distribution of inverted duplications and ladder-like amplifications was mapped by mBAND and by aCGH. Adjacent spacing of focal amplifications and microdeletions were observed, and focal amplification of centromeric and end sequences was present, particularly in the most unstable line DU145. SKY analysis of this line identified chromosome segments fusing with multiple recipient chromosomes (jumping translocations) identifying potential dicentric sources. Telomere free end analysis indicated loss of DNA sequence. Moreover, the cell lines with the shortest telomeres had the most complex karyotypes, suggesting that despite the expression of telomerase, the reduced telomere length could be driving the observed BFB events and elevated levels of CIN in these lines.
Collapse
|
58
|
Smith S, duPlessis S, Lim G, Newcomb C, Yan E. 2570. Int J Radiat Oncol Biol Phys 2006. [DOI: 10.1016/j.ijrobp.2006.07.983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
59
|
Daloia E, Lim G, Melton J, Roubie J. A Convenient Method for the Preparation of (Z)-(2-Aminothiazol-4-yl)-2-methoxyimino-acetylchloride Hydrochloride. SYNTHETIC COMMUN 2006. [DOI: 10.1080/00397919308012597] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
60
|
Lim G, Yan E, Newcomb C, Smith S, Duplessis S. 102 Physician awareness of malignant spinal cord compression in Alberta. Radiother Oncol 2006. [DOI: 10.1016/s0167-8140(06)80843-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
61
|
Lim G, Lau H. 112 Factors influencing late rectal toxicity after radiotherapy of localized prostate cancer. Radiother Oncol 2006. [DOI: 10.1016/s0167-8140(06)80853-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
62
|
Smith S, du Plessis S, Lim G, Newcomb C, Yan E. 115 Referral and management patterns of malignant spinal cord compression in Southern Alberta. Radiother Oncol 2006. [DOI: 10.1016/s0167-8140(06)80856-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
63
|
Lim G, Kay I, Radford Evans DA, Smith W, Meyer T, Angyalfi S, Husain S, Dunscombe P. 79 Resource conservation through efficient seed ordering in intra-operative prostate brachytherapy. Radiother Oncol 2006. [DOI: 10.1016/s0167-8140(06)80820-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
64
|
Prabhakaran L, Lim G, Abisheganaden J, Chee CBE, Choo YM. Impact of an asthma education programme on patients' knowledge, inhaler technique and compliance to treatment. Singapore Med J 2006; 47:225-31. [PMID: 16518558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
INTRODUCTION We conducted a study to assess the impact of an asthma education programme (AEP) on knowledge of asthma and medication, compliance to treatment and inhaler technique, emergency department visits and hospital re-admissions. METHODS Patients hospitalised for asthma exacerbation were administered a questionnaire to test their baseline knowledge and beliefs on asthma, its medications and their compliance to treatment. Their inhaler technique was assessed. They then underwent an AEP consisting of two individualised education sessions. Re-testing was performed after three months. Per protocol approach and McNemar's test was used to analyse the statistical significance of the change in the pre- and post-AEP test scores. Hospital administrative data were used to determine the number of ED visits and hospital admissions pre- and post-AEP. RESULTS Among the 67 patients who completed the two-phase AEP, there was significant improvement in some knowledge aspects (ability to identify rescue medication [p-value is 0.031], that different stimuli can trigger asthma symptoms [p-value is 0.016], that a peak flow meter is used for monitoring asthma [p-value is 0.004], that asthma symptoms are caused by airway swelling/narrowing [p-value is less than 0.001], that steroid inhaler are to be used daily as preventive therapy [p-value is less than 0.001], in self-reported inhaler compliance (number of puffs per administration [p-value is less than 0.001] and per day [p-value is less than 0.001]), and in inhaler technique [p-value is 0.001]. There was also significant reduction in emergency department attendances (p-value is less than 0.001) and hospital admissions (p-value is less than 0.001) among all 97 subjects over a one-year period. CONCLUSION This study demonstrated the effectiveness of an AEP in patients hospitalised for asthma exacerbation.
Collapse
|
65
|
Jain SK, Lim G. Chromium chloride inhibits TNFalpha and IL-6 secretion in isolated human blood mononuclear cells exposed to high glucose. Horm Metab Res 2006; 38:60-2. [PMID: 16477544 DOI: 10.1055/s-2006-924981] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
66
|
Lim G, Lau H, Brar S, Angyalfi S, Balogh A. Factors influencing late rectal toxicity after radiotherapy of localized prostate cancer. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.4730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
67
|
Hughes S, Lim G, Beheshti B, Bayani J, Marrano P, Huang A, Squire JA. Use of whole genome amplification and comparative genomic hybridisation to detect chromosomal copy number alterations in cell line material and tumour tissue. Cytogenet Genome Res 2004; 105:18-24. [PMID: 15218253 DOI: 10.1159/000078004] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2003] [Accepted: 11/28/2003] [Indexed: 11/19/2022] Open
Abstract
We have established that whole genome amplification (WGA), in conjunction with genomic DNA array comparative genomic hybridisation (gaCGH) allows for the identification of genome-wide copy number abnormalities (CNAs) in DNA extracted from both cell line and patient material. To determine the fidelity and reproducibility of WGA to detect copy number imbalances using gaCGH, well characterized cell line genomic DNA was analysed. The gaCGH data obtained from non-amplified DNA and amplified DNA for the neuroblastoma cell line NUB7 and a paediatric medulloblastoma patient was almost identical. In addition, laser capture microdissection (LCM) of prostate tumour cells and subsequent WGA allowed for the detection of a number of CNAs that may not have been identified if DNA had been extracted in bulk from heterogeneous tissue. The results presented here demonstrate the use of WGA for generating sufficient DNA for gaCGH analysis without the introduction of significant sequence representation bias. The combination of amplification and gaCGH using DNA extracted from archival patient material has the potential for permitting the studying of DNA from small cancerous or pre-cancerous foci, which may help to identify potential genomic markers for early diagnosis.
Collapse
|
68
|
Bolduc D, Srour LF, Sweet L, Neatby A, Galanis E, Isaacs S, Lim G. Severe outbreak of Escherichia coli O157:H7 in health care institutions in Charlottetown, Prince Edward Island, fall, 2002. CANADA COMMUNICABLE DISEASE REPORT = RELEVE DES MALADIES TRANSMISSIBLES AU CANADA 2004; 30:81-8. [PMID: 15132397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
|
69
|
Raja R, Lim AV, Lim YP, Lim G, Chan SP, Vu CKF. Malnutrition screening in hospitalised patients and its implication on reimbursement. Intern Med J 2004; 34:176-81. [PMID: 15086697 DOI: 10.1111/j.1444-0903.2004.00518.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Several studies have cited the incidence of malnutrition in hospitals, which is correlated to negative clinical outcomes, to be up to 60%. Data in Singapore, however, are scarce. Its impact on casemix funding is not known. AIMS The aims of the present study were to determine the prevalence of malnutrition, the predisposing risk factors and the impact of documentation and coding of malnutrition on casemix funding in a local population in Singapore. METHODS Patients admitted to selected wards over a 1-month period were screened for malnutrition. Those at risk were further assessed using subjective global assessment. Logistic regression was used to ascertain the impact of identified factors on malnutrition. Financial impact analysis of coding of malnutrition as a comorbidity was carried out and tested with Wilcoxon signed rank tests. RESULTS Six hundred and fifty-eight patients were eligible for screening. The overall prevalence of malnutrition in the selected wards was 14.7% (95% confidence interval (CI): 12.0-17.4%). Old age, the occurrence of cancer and the admitting unit were statistically significant in explaining the occurrence of malnutrition. Coding of malnutrition was found to significantly increase the complexity of 24 of 105 episodes (22.9%) of patient care as measured by expected cost weights (P < 0.001) and expected lengths of stay (P < 0.001). As a result, the expected financing for these 24 patients increased by 59.7%. CONCLUSIONS Malnutrition is prevalent in hospitalised medical and surgical patients. Certain clinical factors should heighten awareness and prompt detection for malnutrition. Coding for malnutrition impacts favourably on casemix funding for a subset of malnourished patients.
Collapse
|
70
|
Cole G, Yang F, Lim G, Cummings J, Masterman D, Frautschy S. A Rationale for Curcuminoids for the Prevention or Treatment of Alzheimers Disease. ACTA ACUST UNITED AC 2003. [DOI: 10.2174/1568013033358761] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
71
|
Lim FS, Toh MPHS, Emmanuel SC, Chan SP, Lim G. A preliminary evaluation of a disease management programme for patients with diabetes mellitus and hypertension in a primary healthcare setting. ANNALS OF THE ACADEMY OF MEDICINE, SINGAPORE 2002; 31:431-9. [PMID: 12161877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
Abstract
INTRODUCTION The Comprehensive Chronic Care Programme (CCCP) is an intensified programme designed to provide comprehensive care for the management of diabetes mellitus, hypertension and hyperlipidaemia at a primary healthcare setting. A formative study was done to evaluate the effectiveness of the CCCP compared to the normal polyclinic management of diabetes mellitus. MATERIALS AND METHODS Control of diabetes (HbA1c) and hypertension (blood pressure) in 63 diabetic patients of a pilot CCCP was compared with 100 diabetic patients not on the programme (non-CCCP) after a 6-month follow-up. Paired t-tests were conducted for differences in mean HbA1c values between baseline and after 6 months. The H-rank test was applied to check for significant differences in change categories of hypertension control between CCCP and non-CCCP cases. RESULTS In the CCCP group, there was a two-point decrease in HbA1c after 6 months and 65.1% of the patients showed improvement. The proportion of patients achieving optimal diabetic control increased from 9.5% to 36.5%. Conversely, there was deterioration in the non-CCCP group with decrease in the proportion of patients achieving optimal diabetic control from 31% to 21%. Of the hypertensive patients in the CCCP group, 54.5% showed an improvement in blood pressure (BP) control while 44% of the non-CCCP group showed improvement at 6 months. CONCLUSIONS CCCP, a comprehensive chronic disease management programme, is effective for good diabetic control of patients with diabetes mellitus.
Collapse
|
72
|
Engler EM, Lee VY, Nazzal AI, Beyers RB, Lim G, Grant PM, Parkin SSP, Ramirez ML, Vazquez JE, Savoy RJ. Superconductivity above liquid nitrogen temperature: preparation and properties of a family of perovskite-based superconductors. J Am Chem Soc 2002. [DOI: 10.1021/ja00243a061] [Citation(s) in RCA: 128] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
73
|
Stirling R, Aramini J, Ellis A, Lim G, Meyers R, Fleury M, Werker D. Waterborne cryptosporidiosis outbreak, North Battleford, Saskatchewan, Spring 2001. CANADA COMMUNICABLE DISEASE REPORT = RELEVE DES MALADIES TRANSMISSIBLES AU CANADA 2001; 27:185-92. [PMID: 11729455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
|
74
|
Abstract
A comprehensive failure analysis was performed on 6 femoral components and 1 tibial component that fractured in service. All were Whiteside Ortholoc II total knee arthroplasty components, manufactured from cast cobalt-chromium-molybdenum alloy and porous coated. Fracture surface analysis revealed fatigue-induced failure in all cases. Most fractures occurred at regions of high stress concentration, such as sharp corners, sintered beads, and thin sections. Metallurgical examination showed significant variation in grain size, interdendritic carbides, and hardness between samples. In some cases, continuous carbide networks and voids were prominent at the bead-substrate interface. Patient weight and surgical placement were identified as contributory factors in component failure. Limitations of cast cobalt-chromium-molybdenum alloy in weight-bearing applications must be emphasized, particularly when important determinants, such as design, metallurgy, and specific clinical factors, are less than optimal.
Collapse
|
75
|
Jain SK, Lim G. Pyridoxine and pyridoxamine inhibits superoxide radicals and prevents lipid peroxidation, protein glycosylation, and (Na+ + K+)-ATPase activity reduction in high glucose-treated human erythrocytes. Free Radic Biol Med 2001; 30:232-7. [PMID: 11165869 DOI: 10.1016/s0891-5849(00)00462-7] [Citation(s) in RCA: 139] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Vitamin B(6) (pyridoxine) supplementation has been found beneficial in preventing diabetic neuropathy and retinopathy, and the glycosylation of proteins. Oxygen radicals and oxidative damage have been implicated in the cellular dysfunction and complications of diabetes. This study was undertaken to test the hypothesis that pyridoxine (P) and pyridoxamine (PM) inhibit superoxide radical production, reduce lipid peroxidation and glycosylation, and increase the (Na+ + K+)-ATPase activity in high glucose-exposed red blood cells (RBC). Superoxide radical production was assessed by the reduction of cytochrome C by glucose in the presence and absence of P or PM in a cell-free buffered solution. To examine cellular effects, washed normal human RBC were treated with control and high glucose concentrations with and without P or PM. Both P and PM significantly lowered lipid peroxidation and glycated hemoglobin (HbA(1)) formation in high glucose-exposed RBC. P and PM significantly prevented the reduction in (Na+ + K+)-ATPase activity in high glucose-treated RBC. Thus, P or PM can inhibit oxygen radical production, which in turn prevents the lipid peroxidation, protein glycosylation, and (Na+ + K+)-ATPase activity reduction induced by the hyperglycemia. This study describes a new biochemical mechanism by which P or PM supplementation may delay or inhibit the development of complications in diabetes.
Collapse
|