Displaying publications 41 - 51 of 51 in total

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  1. Chin DHJ, Lim KG, Peh HS, Burud IAS, Tata MD, Zakaria J
    Med J Malaysia, 2022 Jan;77(1):41-46.
    PMID: 35086993
    INTRODUCTION: Achalasia cardia is an oesophageal motility disorder that affects various age groups. This study focused on the epidemiological features of achalasia, its risk factors, treatment modalities offered and the clinical outcomes in a tertiary hospital.

    MATERIALS AND METHODS: A retrospective search was carried out on all patients with a diagnosis of achalasia cardia in Hospital Tuanku Ja'afar (HTJ), Seremban, Malaysia between 2014 and 2018. Demographic data, patient symptomatology, and definitive management options were determined from the records. Telephone interviews were conducted to evaluate patient satisfaction with the outcome of treatment.

    RESULTS: There were 30 patients with a newly diagnosed achalasia cardia in that 5-year period, with an equal incidence among men and women. The mean age of presentation was 44.63 ± 18.21 years. Malays formed the largest group. The mean weight and body mass index were 46.8 ± 10.4 kg and 18.0 ± 4.4 kg/m2 respectively. There was a wide range of duration of symptoms at presentation with a mean of 30.11 ± 35.29 months. Almost all patients presented with dysphagia (96.7%) while 70% also noted loss of weight. All patients underwent oesophagogastroduodenoscopy (OGDS) and 26 patients (86.7%) had barium swallow as part of diagnostic workup. A total of 18 patients underwent a laparoscopic Heller myotomy with or without Dor Fundoplication and/or cruroplasty while two patients (6.7%) underwent pneumatic dilatation as first treatment. Iatrogenic mucosal perforations were detected in 8 patients who underwent myotomy and fundoplication and were repaired intraoperatively. Of the patients who underwent myotomy and fundoplication, the mean weight increase was 15.6kg, increasing from 43.0 ± 8.4 kg to 58.6 ± 13.7 kg. All the patients who underwent treatment were satisfied with their treatment outcomes.

    CONCLUSION: Most patients with achalasia cardia deemed suitable for surgery and counselled accordingly accept surgery resulting in high levels of satisfaction and weight gain in almost all these patients. A small minority who opt for pneumatic dilatation may also achieve satisfactory outcomes comparable to surgery in the short term. Although rare, clinicians should be able to recognise this disease early as early intervention often leads to satisfactory longterm outcomes.

  2. Veettil SK, Lim KG, Ching SM, Saokaew S, Phisalprapa P, Chaiyakunapruk N
    BMC Cancer, 2017 Nov 14;17(1):763.
    PMID: 29137605 DOI: 10.1186/s12885-017-3757-8
    BACKGROUND: Beneficial effects of aspirin and non-aspirin nonsteroidal anti-inflammatory drugs (NSAIDs) against recurrent colorectal adenomas have been documented in systematic reviews; however, the results have not been conclusive. Uncertainty remains about the appropriate dose of aspirin for adenoma prevention. The persistence of the protective effect of NSAIDs against recurrent adenomas after treatment cessation is yet to be established.

    METHODS: Our objective was to update and systematically evaluate the evidence for aspirin and other NSAIDs on the incidence of recurrent colorectal adenomas taking into consideration the risks of random error and to appraise the quality of evidence using GRADE (The Grading of Recommendations, Assessment, Development and Evaluation) approach. Retrieved trials were evaluated using Cochrane risk of bias instrument. Meta-analytic estimates were calculated with random-effects model and random errors were evaluated with trial sequential analysis (TSA).

    RESULTS: In patients with a previous history of colorectal cancer or adenomas, low-dose aspirin (80-160 mg/day) compared to placebo taken for 2 to 4 years reduces the risk of recurrent colorectal adenomas (relative risk (RR), 0.80 [95% CI (confidence interval), 0.70-0.92]). TSA indicated a firm evidence for this beneficial effect. The evidence indicated moderate GRADE quality. Low-dose aspirin also reduces the recurrence of advanced adenomas (RR, 0.66 [95% CI, 0.44-0.99]); however, TSA indicated lack of firm evidence for a beneficial effect. High-dose aspirin (300-325 mg/day) did not statistically reduce the recurrent adenomas (RR, 0.90 [95% CI, 0.68-1.18]). Cyclooxygenase-2 (COX-2) inhibitors (e.g. celecoxib 400 mg/day) were associated with a significant decrease in the recurrence of both adenomas (RR, 0.66 [95% CI, 0.59-0.72]) and advanced adenomas (RR, 0.45 [95% CI, 0.33-0.57]); however, this association did not persist and there was a trend of an increased risk of recurrent adenomas observed 2 years after the withdrawal.

    CONCLUSION: Our findings confirm the beneficial effect of low-dose aspirin on recurrence of any adenomas; however, effect on advanced adenomas was inconclusive. COX-2 inhibitors seem to be more effective in preventing recurrence of adenomas; however, there was a trend of an increased risk of recurrence of adenomas observed after discontinuing regular use.

  3. Veettil SK, Lim KG, Chaiyakunapruk N, Ching SM, Abu Hassan MR
    Asian J Surg, 2017 Nov;40(6):481-489.
    PMID: 27492344 DOI: 10.1016/j.asjsur.2016.07.005
    BACKGROUND: This study aims to provide an analytical overview of the changing burden of colorectal cancer and highlight the implementable control measures that can help reduce the future burden of colorectal cancer in Malaysia.

    METHODS: We performed a MEDLINE search via OVID with the ​Medical Subject Headings (MeSH) terms "Colorectal Neoplasms"[Mesh] and "Malaysia"[Mesh], and PubMed with the key words "colorectal cancer" and "Malaysia" from 1990 to 2015 for studies reporting any clinical, societal, and economical findings associated with colorectal cancer in Malaysia. Incidence and mortality data were retrieved from population-based cancer registries/databases.

    RESULTS: In Malaysia, colorectal cancer is the second most common cancer in males and the third most common cancer in females. The economic burden of colorectal cancer is substantial and is likely to increase over time in Malaysia owing to the current trend in colorectal cancer incidence. In Malaysia, most patients with colorectal cancer have been diagnosed at a late stage, with the 5-year relative survival by stage being lower than that in developed Asian countries. Public awareness of the rising incidence of colorectal cancer and the participation rates for colorectal cancer screening are low.

    CONCLUSION: The efficiency of different screening approaches must be assessed, and an organized national screening program should be developed in a phased manner. It is essential to maintain a balanced investment in awareness programs targeting general population and primary care providers, focused on increasing the knowledge on symptoms and risk factors of colorectal cancer, awareness on benefits of screening, and promotion of healthy life styles to prevent this important disease.

  4. Lim KG, Edward RH, McAll GLG, Thaung M, Wahad NA, Arimainayagam G
    Singapore Med J, 1988 Aug;29(4):353-6.
    PMID: 3249962
    216 patients were found to have had surgery for urinary calculi In a retrospective analysis of surgical records of the two general hospitals in Kelantan over a two year period. Excluding 11 patients from Terengganu and 2 patients resident in Kelantan for less than 1 year, this amounts to an annual incidence for calculus surgery of 10 per 100,000 residents per year. Lower urinary tract (LT) calculi (143) were more common than upper urinary tract (UT) calculi (71). There was an overwhelming majority of males among patients operated on for LT calculi (ratio of males:females = 1.2:1). The mean age of patients with UT calculi was 44 years, while that of LT calculi was 51 years.
  5. Lim YS, Quek JH, Ching XW, Lim DTR, Lim KG, Thuraisingham C, et al.
    JMIR Form Res, 2023 Sep 22;7:e46458.
    PMID: 37738081 DOI: 10.2196/46458
    BACKGROUND: Stress, anxiety, and depression are major mental health concerns worldwide. A wide variety of digital mental health interventions have demonstrated efficacy in improving one's mental health status, and digital interventions that involve some form of human involvement have been shown to demonstrate greater efficacy than self-guided digital interventions. Studies demonstrating the efficacy of digital mental health interventions within the Asian region are scarce.

    OBJECTIVE: This study aimed to investigate the potential efficacy of the digital mental health intervention, ThoughtFullChat, which consists of one-on-one, asynchronous, text-based coaching with certified mental health professionals and self-guided tools, in improving self-reported symptoms of depression, anxiety, and stress. The study also aims to examine the potential differences in efficacy among occupational subgroups and between sexes.

    METHODS: A randomized controlled study was conducted among housemen (trainee physicians), students, faculty members, and corporate staff at International Medical University, Malaysia. A total of 392 participants were enrolled and randomized to the intervention (n=197, 50.3%) and control (n=195, 49.7%) groups. Depression, anxiety, and stress symptoms were measured using the Depression, Anxiety, and Stress Scale-21 items at baseline and after the 3-month intervention period. The Satisfaction with Life Scale and Brief Resilience Scale were also included, along with a questionnaire about demographics.

    RESULTS: Significant decrease was observed in depression (P=.02) and anxiety (P=.002) scores in the intervention group. A subgroup (corporate staff) also demonstrated significant decrease in stress (P=.005) alongside depression (P=.006) and anxiety (P=.002). Females showed significant improvements in depression (P=.02) and anxiety (P

  6. Muthuraman A, Ramesh M, Mustaffa F, Nadeem A, Nishat S, Paramakrishnan N, et al.
    Molecules, 2023 May 26;28(11).
    PMID: 37298835 DOI: 10.3390/molecules28114358
    Molecular docking is widely used in the assessment of the therapeutic potential of pharmaceutical agents. The binding properties of beta-carotene (BC) to acetylcholine esterase (AChE) proteins were characterized using the molecular docking method. The mechanism of AChE inhibition was assessed by an experimental in vitro kinetic study. In addition, the role of BC action was tested by the zebrafish embryo toxicity test (ZFET). The results of the docking ability of BC to AChE showed significant ligand binding mode. The kinetic parameter, i.e., the low AICc value shown as the compound was the competitive type of inhibition of AChE. Further, BC also showed mild toxicity at a higher dose (2200 mg/L) in ZFET assessment with changes in biomarkers. The LC50 value of BC is 1811.94 mg/L. Acetylcholine esterase (AChE) plays a pivotal role in the hydrolysis of acetylcholine, which leads to the development of cognitive dysfunction. BC possesses the regulation of acetylcholine esterase (AChE) and acid phosphatase (AP) activity to prevent neurovascular dysfunction. Therefore, the characterization of BC could be used as a pharmaceutical agent for the treatment of cholinergic neurotoxicity-associated neurovascular disorders such as developmental toxicity, vascular dementia, and Alzheimer's disease due to its AChE and AP inhibitory actions.
  7. Lim KG, Nantha YS, Kasim NH, Ramamoothy T, Yam A, Lim EW, et al.
    J ASEAN Fed Endocr Soc, 2019;34(1):56-61.
    PMID: 33442137 DOI: 10.15605/jafes.034.01.09
    Background: Medical students at the International Medical University (IMU), Seremban, Malaysia were required to assess patients at home over a period of two years as a part of their curriculum. The students conducted six visits to educate their patients and help them utilize available resources to manage their disease.This study aims to examine whether patients with diabetes visited improve their control of their disease, specifically in terms of their HbA1c measurement.

    Methodology: We used a retrospective, matched before and after study design to prevent biased levels of effort by students conducting the home visits over two years. Information was obtained through reports written by IMU students. Convenient sampling was used to select outpatients undergoing treatment 'as usual' from a health clinic and were subsequently matched as controls.

    Results: There was a significant decrease in the mean HbA1c among 57 patients with diabetes who were CFCS subjects [from 8.4% (68 mmol/mol) to 7.3% (57 mmol/mol) p<0.001], while the mean HbA1c levels among 107 matched control subjects rose significantly from 7.9% (63 mmol/mol) to 8.3% (67 mmol/mol) (p=0.019) over a similar period. The two groups were controlled for most biological and socioeconomic variables except for comorbidities, diabetic complications and medication dose changes between groups.

    Conclusion: Behavioural intervention in the form of home visits conducted by medical students is an effective tool with a dual purpose, first as a student educational initiative, and second as a strategy to improve outcomes for patients with diabetes.

  8. Lim KG, Sumera A, Venkateswaran SP, Burud IAS, Albazah NIJ
    Malays J Pathol, 2024 Apr;46(1):11-20.
    PMID: 38682841
    Lymphomas are a diverse group of malignant proliferations that arise as discrete tissue masses. The most widely accepted taxonomy for lymphoma is the World Health Organization classification of tumours of haematopoietic and lymphoid tissues, the 5th edition of which was released in June 2022. Most (85% to 90%) lymphoid neoplasms are of B cell origin. Mature B-cell neoplasms are a heterogeneous group of malignancies with similar disease courses and treatment paradigms. This review focuses on the various mature B-cell lymphomas in Malaysia, including Hodgkin lymphoma. A literature search was performed in various bibliographic databases. A total of 64 papers were included in this review. We found 15 papers on Hodgkin lymphoma, 14 on follicular lymphoma, 12 on Burkitt lymphoma, 5 on mucosa-associated lymphoid tissue (MALT) lymphoma, 4 on plasmablastic lymphoma, 3 on mantle cell lymphoma, 1 each on primary mediastinal large B-cell lymphoma, B-lymphoblastic lymphoma, and 3 on other unspecified B-cell lymphomas. The site, age, distribution, prognostic markers, and the various subclassification of B cell lymphomas were studied from these papers. Prognostic genetic markers in B-cell lymphomas include C-MYC, BCL2 and BCL6 as they are the most prevalent mutations in this condition. Anecdotal outcomes range from rapid fatality to unexplained spontaneous remission. This review adds to the existing literature on lymphoma in Malaysia by compiling the evidence that may lead to further research on the diagnosis and treatment of lymphoma in Malaysia and worldwide.
  9. Veettil SK, Jinatongthai P, Nathisuwan S, Teerawattanapong N, Ching SM, Lim KG, et al.
    Clin Epidemiol, 2018;10:1433-1445.
    PMID: 30349391 DOI: 10.2147/CLEP.S174120
    Background: Various interventions have been tested as primary prevention of colorectal cancers (CRC), but comprehensive evidence comparing them is absent. We examined the effects of various chemopreventive agents (CPAs) on CRC incidence and mortality.

    Methods: We did a network meta-analysis based on a systematic review of randomized controlled trials (RCTs) that compared at least one CPA (aspirin, antioxidants, folic acid, vitamin B6, vitamin B12, calcium, vitamin D, alone or in combination) to placebo or other CPA in persons without history of CRC. Several databases were searched from inception up to March 2017. Primary outcomes were early and long-term CRC incidence and mortality.

    Results: Twenty-one RCTs comprising 281,063 participants, 9 RCTS comprising 160,101 participants, and 7 RCTs comprising 24,001 participants were included in the network meta-analysis for early risk of CRC incidence, long-term risk of CRC incidence and mortality, respectively. For early CRC incidence, no CPAs were found to be effective. For long-term CRC incidence and mortality, aspirin was the only intervention that showed protective effects with potential dose-dependent effects (risk ratio [RR], 0.74 [95% CI, 0.57-0.97] for high-dose [≥325 mg/day] and RR, 0.81 [95% CI, 0.67-0.98] for very-low-dose [≤100 mg/day]). Similar trend was found for mortality (RR, 0.43 [95% CI, 0.23-0.81] for low-dose [>100-325 mg/day] and RR, 0.65 [95% CI, 0.45-0.94] for very-low-dose). However, in net clinical benefit analysis, when combining risk estimates on mortality from CRC, cardiovascular disease, and pooled risk estimates of major gastrointestinal bleeding, low-dose aspirin provided the highest net survival gain (%) of 1.736 [95% CI, 1.010-2.434].

    Conclusion: Aspirin at the dose range of 75-325 mg/day is a safe and effective primary prevention for long-term CRC among people at average risk. None of the other CPAs were found to be effective. There may potentially be differential effects among various doses of aspirin that needs further investigation.

  10. Lim KG, Lee CS, Chin DHJ, Ooi YS, Veettil SK, Ching SM, et al.
    J Gastrointest Oncol, 2020 Apr;11(2):250-259.
    PMID: 32399266 DOI: 10.21037/jgo.2020.02.04
    Background: Colorectal cancer is the second most common cancer in Malaysia. Its disease burden is likely to increase over time owing to its current trends in this region. This study was undertaken to determine the 5-year survival rate and prognostic factors for survival in colorectal cancer patients treated in a tertiary hospital, in Malaysia.

    Methods: We reviewed the records of colorectal cancer patients treated in Hospital Tuanku Ja'afar Seremban, Malaysia from 2008 to 2012. Survival analysis at five years was performed using the Kaplan-Meier method. Cox proportional hazard regression analysis was carried out to determine the predictors of 5-year colorectal cancer survival.

    Results: Of the 275 patients, 43.3% were colon cancers, 51.8% were rectal cancers. Only 2.2% were diagnosed in Stage I. 28.7%, 33.1%, and 16.7% were in Stage II, III and IV respectively; 62/79 (78%) of Stage II patients were in Stage IIb; 15.7% of patients were below the age of 50 and fewer of them presented early (P=0.002). The overall 5-year survival was 46.5%. It was 67.9%, 50.5% and 12.8% for Stage I&II, III and IV patients respectively. Early stage of cancer (P<0.001) and age below the mean (P=0.01) were the most significant factor in predicting better survival. Gender and ethnic group were not associated with late presentation nor survival. Neither was there a difference between colon and rectum cancers nor patients who received elective surgical treatment compared to patients receiving other treatment first (P=0.085).

    Conclusions: Late presentation is the most important predictor for poor outcome for colorectal cancer in Seremban. Patients under the age of 50 years present late more often, but do not have poorer survival.

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