Displaying publications 1 - 20 of 35 in total

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  1. Wong SW, Chan WK
    Indian J Gastroenterol, 2020 02;39(1):1-8.
    PMID: 32152903 DOI: 10.1007/s12664-020-01018-x
    The growing burden of non-alcoholic fatty liver disease (NAFLD) parallels the increasing prevalence of obesity in Asia. The overall prevalence of NAFLD in Asia is now estimated to be 29.6% and may have surpassed that in Western populations. NAFLD increases with increasing age and is closely associated with metabolic syndrome. Ethnic differences exist in the prevalence of NAFLD, but the underlying factors are unclear. There were initial concerns about lean NAFLD being associated with more severe liver disease and increased mortality, but subsequent studies suggested otherwise. Only some NAFLD patients progress to develop advanced liver fibrosis and cirrhosis, while the liver status remains unchanged in the majority; fibrosis stage is the most important predictor of disease-specific mortality in NAFLD. Surveillance for hepatocellular carcinoma (HCC) remains a challenge due to undiagnosed cirrhosis and the development of HCC in non-cirrhotic NAFLD patients. Diabetes mellitus shares a bidirectional relationship with NAFLD; NAFLD is highly prevalent among patients with diabetes mellitus, and diabetes mellitus is associated with more severe NAFLD. Chronic hepatitis B (CHB) is a major cause of chronic liver disease in Asia; NAFLD and CHB are increasingly observed together because of the increasing prevalence of NAFLD. Despite studies reporting favorable virologic outcome in CHB patients with NAFLD, NAFLD has been found to be independently associated with fibrosis progression and poorer prognosis in CHB patients. Therefore, NAFLD in CHB patients should be given more attention.
  2. Kanaheswari Y, Hamzaini AH, Wong SW, Zulfiqar A
    Acta Paediatr, 2008 Nov;97(11):1589-91.
    PMID: 18671691 DOI: 10.1111/j.1651-2227.2008.00971.x
    Phakomatosis pigmentovascularis (PPV) is a rare congenital syndrome characterized predominantly by cutaneous vascular malformations and pigmentary naevi. The most frequently reported form, Type II b, is associated with systemic involvement. Sturge-Weber Syndrome (SWS) with concomitant glaucoma, Klippel-Trenaunay Syndrome (KTS) and naevus of Ota have been frequently described, but there have only been two case reports with asymptomatic renal anomalies.
  3. Kanaheswari Y, Hamzaini AH, Wong SW
    Med J Malaysia, 2008 Aug;63(3):251-3.
    PMID: 19248702 MyJurnal
    The association of congenital hepatic fibrosis (CHF) with autosomal recessive polycystic kidney disease (ARPKD) is well known and occurs in approximately 50% of cases. However the association of CHF with autosomal dominant polycystic kidney disease (ADPKD) is less well known and less well documented. We report a child with neonatal onset of hypertension due to ADPKD who later develops portal hypertension due to CHF in childhood. A review of this rare association follows.
  4. Wong SW, Chan YM, Lim TS
    Malays J Nutr, 2011 Dec;17(3):277-86.
    PMID: 22655450 MyJurnal
    There is mounting evidence demonstrating the importance of adequate physical activity to promote better well-being among hemodialysis patients. Available data pertaining to the levels of physical activity and its determinants among hemodialysis patients is, however, scarce in Malaysia. The objectives of this study are hence to determine the levels of physical activity and it associated factors among hemodialysis patients.
  5. Wong SW, Chan WK, Mohamed R
    J Viral Hepat, 2020 12;27(12):1297-1305.
    PMID: 32668489 DOI: 10.1111/jvh.13361
    Hepatic steatosis is increasingly common and has been implicated in progression of liver fibrosis in chronic hepatitis B (CHB) patients. We aimed to investigate the impact of hepatic steatosis on liver fibrosis and clinical outcomes in CHB patients. Consecutive CHB patients who underwent transient elastography between 2013 and 2017 at a tertiary hospital were included in this longitudinal cohort study. Presence of hepatic steatosis was defined as controlled attenuation parameter, CAP ≥ 248 dB/m, while advanced liver fibrosis was defined as liver stiffness measurement, LSM ≥ 9.4 kPa. Cardiovascular events, liver-related complications, malignancy and mortality and a composite of these outcomes were evaluated with Kaplan-Meier analysis and Cox proportional hazards regression. Our study cohort included 614 patients with median follow-up of 45 (32-63) months. Hepatic steatosis was present in 294 patients (47.9%), and advanced liver fibrosis was present in 127 patients (21.0%). Presence of hepatic steatosis (OR: 1.956, 95% CI: 1.250-3.060) and diabetes mellitus (OR: 3.507, 95% CI: 2.069-5.944) was independently associated with advanced fibrosis. Advanced fibrosis was independently associated with composite outcome (HR: 2.496, 95% CI: 1.352-4.606), liver-related complications (HR: 3.765, 95% CI: 1.380-10.271) and mortality (HR: 3.632, 95% CI: 1.342-9.826), but not cardiovascular events and malignancy. Hepatic steatosis was not associated with any adverse outcomes. We conclude that hepatic steatosis is common and associated with advanced fibrosis in CHB patients. Unlike advanced fibrosis, hepatic steatosis does not predict adverse outcomes in CHB patients.
  6. Wong SW, Ting YW, Chan WK
    JGH Open, 2018 Oct;2(5):235-241.
    PMID: 30483595 DOI: 10.1002/jgh3.12070
    Hepatocellular carcinoma (HCC) is the fifth most common cancer and the second leading cause of cancer-related mortality worldwide. Non-alcoholic fatty liver disease (NAFLD) encompasses a spectrum of liver pathology that is characterized by the excessive accumulation of fat in the liver attributable to overnutrition and is strongly associated with the metabolic syndrome. Non-alcoholic steatohepatitis is the more severe form of NAFLD that is defined histologically by the presence of lobular inflammation and hepatocyte ballooning. Non-alcoholic steatohepatitis patients have a greater tendency to develop advanced liver fibrosis, cirrhosis, and HCC. This review focuses on the epidemiology of NAFLD-related HCC and its implications. NAFLD has been estimated to contribute to 10-12% of HCC cases in Western populations and 1-6% of HCC cases in Asian populations. NAFLD-related HCC is expected to increase in Asian populations, in line with the increased prevalence of NALFD similar to that of Western populations in recent years. The increasing burden of NAFLD-related HCC over time has been demonstrated in studies from both Western and Asian populations. Certain factors such as ethnicity, obesity, and diabetes mellitus appear to have an incremental effect on the risk of developing HCC among NAFLD patients. The difficulty in identifying NAFLD patients with cirrhosis and the possibility of HCC developing in noncirrhotic NAFLD patients are challenges that need to be addressed. Further understanding of these gaps may contribute to better surveillance strategies for the early detection of HCC in NAFLD patients to reduce the mortality and improve the survival of these patients.
  7. Atmawidjaja RW, Wong SW, Yang WW, Ong LC
    Dev Med Child Neurol, 2014 Jul;56(7):681-5.
    PMID: 24528212 DOI: 10.1111/dmcn.12399
    The aim of the study was to compare the frequency and type of sleep disturbances in a group of Malaysian children aged 4 to 18 years with cerebral palsy (CP) with their nearest-age, able-bodied siblings and to identify factors associated with sleep disturbances.
  8. Wong SW, Kyaw L, Ong LC, Zulfiqar AM
    J Paediatr Child Health, 2011 Apr;47(4):237-9.
    PMID: 20500432 DOI: 10.1111/j.1440-1754.2010.01739.x
    Sturge-Weber syndrome is a neurocutaneous syndrome characterised by facial port wine stain, ipsilateral leptomeningeal angioma and vascular eye abnormalities. We report a rare case of Sturge-Weber syndrome without facial nevus presenting with neonatal seizures.
  9. Lope RJ, Wong SW, Wu LL
    J Paediatr Child Health, 2010 Apr;46(4):204-6.
    PMID: 20412414 DOI: 10.1111/j.1440-1754.2009.01662.x
    Children with occipital seizures often have ictal autonomic symptoms such as pallor and vomiting and lack motor manifestations. This has lead to misdiagnosis of occipital seizures in children. The following case report highlights the clinical features of a child with occipital epilepsy misdiagnosed as having migraine. The aetiology of symptomatic occipital epilepsy will be discussed.
  10. Wong SW, Chew SP, Abdul Aziz SA, Mohamed Shah N
    Drug Dev Ind Pharm, 2024 Mar 22.
    PMID: 38459761 DOI: 10.1080/03639045.2024.2327462
    OBJECTIVES: This study aimed to determine the incidence, types and predictors of Potentially Harmful Excipients (PHE) exposure among hospitalized neonates.

    METHODS: A prospective observational study was conducted from March to April 2022 in neonatal wards at a state hospital in Malaysia. The PHEs of interest were aspartame, benzalkonium chloride, benzyl alcohol, benzoic acid or benzoates, ethanol, parabens, polysorbate 80, propylene glycol, saccharin sodium, sorbitol and sulfites. Product information leaflets (PILs) and summaries of product characteristics (SPCs) were referred to obtain information on active pharmaceutical ingredient, strength, trade name as well as type and amount of the excipients.

    RESULTS: A total of 108 neonates were recruited and 97.2% of them were exposed to at least one PHE. Parabens (47.2%) and sulfites (27.5%) were the two most commonly administered PHEs. Benzyl alcohol is contraindicated in neonates but was administered to 8% of neonates in this study. The median daily dose of ethanol (24.11 mg/kg/day, IQR 19.73, 28.49) exceeded the acceptable daily intake (ADI) by four times. However, the dose was not available for all PHEs as this information is not always available in the PIL or SPC. Administration of cardiovascular drugs was associated with a higher risk of exposure to any PHE (OR 6.38, CI 2.75, 14.79, p-value < 0.001).

    CONCLUSION: The exposure of PHE among neonates in this study is high with certain PHEs exceeding the ADI. It highlights the need for certain strategies to be implemented to reduce such exposure in neonates.

  11. Ong LC, Yang WW, Wong SW, alSiddiq F, Khu YS
    J Paediatr Child Health, 2010 Mar;46(3):80-4.
    PMID: 20105259 DOI: 10.1111/j.1440-1754.2009.01642.x
    To compare sleep habits and disturbances between Malaysian children with epilepsy and their siblings (age range 4-18 years) and to determine the factors associated with greater sleep disturbance.
  12. Thong PL, Wong SW, Abdul Manaf MR, Lee ML, Kanaheswari Y
    Med J Malaysia, 2019 08;74(4):281-287.
    PMID: 31424034
    INTRODUCTION: The average incidence of spina bifida (SB) in Malaysia is 0.43 among 1,000 live births. The burden of the disease and its impact on the overall development and health though tremendously improved, remains significant. Therefore, current patient management strategies must include quality of life (QOL) measures.

    METHODS: This was a prospective, cross-sectional study on spina bifida children aged 5-20 years, attending the paediatric spina bifida clinics of Universiti Kebangsaan Malaysia Medical Centre Kuala Lumpur and Hospital Tuanku Jaanku Seremban. Scores were obtained using the validated disease specific Parkin QOL questionnaire. Univariate and multivariate analysis were used to investigate factors that were determinants for these outcomes. Results were expressed as beta coefficient and 95% confidence intervals (95%CI).

    RESULTS: A total of 54 children and adolescents aged between 5-20 years completed the questionnaires. Presence of neurogenic bowel (p=0.003), neurogenic bladder (p=0.041), shunt (p=0.044), non-ambulators (p=0.007) and being the only child in the family (p=0.037) were associated with lower QOL scores. Multivariate analysis showed presence of neurogenic bowel (β=0.375, 95%CI: 0.00, 0.15) and being the only child in the family (β=0.250, 95%CI: 0.04, 0.17) explained 22.1% of the variance in the QOL mean percentage scores.

    CONCLUSION: Being a single child in the family was the only socio-demographic variable associated with lower QOL scores. Although several clinical factors appeared to contribute significantly to QOL in spina bifida children, the presence of neurogenic bowel had the greatest impact.

  13. Miyata-Nozaka Y, Tan HJ, Wong SW, Raymond AA, Omar H, Zain SM
    Int J Clin Pharmacol Ther, 2021 Jan;59(1):8-16.
    PMID: 33026315 DOI: 10.5414/CP203761
    OBJECTIVE: Epilepsy is a common chronic neurological condition characterized by recurrent seizures. Approximately 30 - 40% of epileptic patients do not respond to antiepileptic drugs. Previous studies suggest that CYP3A5 polymorphisms affect carbamazepine metabolism.

    MATERIALS AND METHODS: To examine this hypothesis, in the present study, the associations between CYP3A5 variants (rs776746 and rs1419745) and response to carbamazepine and valproic acid monotherapy in Malaysian epileptic patients were evaluated.

    RESULTS: A total of 288 Malaysian epileptic patients were recruited and further reviewed, of whom 63 patients were on carbamazepine monotherapy, and 85 patients were on valproic acid monotherapy. There was no patient with drug hypersensitivity syndrome within the population. Subjects were genotyped by using Sequenom MassARRAY platform. This study found a significant association of CYP3A5 rs776746 with the carbamazepine treatment response in total patients (p = 0.026) and Malay ethnic subgroup (p = 0.006). In addition, a marginal significant association of CYP3A5 rs1419745 with carbamazepine treatment response was reported in the Malays. Similarly, CYP3A5 rs776746 was associated with valproic acid response in total patients (p = 0.037) and Malays (marginal p = 0.05).

    CONCLUSION: Our findings suggest that CYP3A5 polymorphisms affect carbamazepine and valproic acid response in Malaysian epileptic patients.

  14. Ng YZ, Lai LL, Wong SW, Mohamad SY, Chuah KH, Chan WK
    PLoS One, 2021;16(5):e0250300.
    PMID: 33939744 DOI: 10.1371/journal.pone.0250300
    BACKGROUND & AIM: We studied FibroTouch (FT) and Fibroscan (FS) examination results and their repeatability when performed by healthcare personnel of different background.

    METHODS: FT and FS examinations were performed on patients with chronic liver disease by two operators, a doctor and a nurse, twice on each patient, at two different time points, independent of each other.

    RESULTS: The data for 163 patients with 1304 examinations was analyzed. There was strong correlation between FT and FS for attenuation parameter (Spearman's rho 0.76, p<0.001) and liver stiffness measurement (LSM) (Spearman's rho 0.70, p<0.001). However, FT produced higher value at lower attenuation parameter and LSM, and lower value at higher attenuation parameter and LSM. There was substantial agreement when using 15kPa LSM cut-off, but only moderate agreement when using 10kPa and 20kPa LSM cut-offs and 248dB/m, 268dB/m and 280dB/m attenuation parameter cut-offs. The IQR for attenuation parameter and IQR/median for LSM were significantly lower for FT compared with FS (4dB/m vs 27dB/m, p<0.001, and 10 vs 12, p<0.001, respectively). The intra- and inter-observer reliability of attenuation parameter and LSM using FT and FS were good to excellent with intraclass correlation coefficients 0.89-0.99. FT had shorter examination time (33s vs 47s, p<0.001) and less invalid measurements (0 vs 2, p<0.001).

    CONCLUSION: Measurements obtained with FT and FS strongly correlated, but significant differences in their absolute values, consistency, examination time and number of invalid measurements were observed. Either device can be used by healthcare personnel of different backgrounds when sufficiently trained.

  15. Kuppusamy UR, Indran M, Ahmad T, Wong SW, Tan SY, Mahmood AA
    Clin Chim Acta, 2005 Jan;351(1-2):197-201.
    PMID: 15563890 DOI: 10.1016/j.cccn.2004.09.014
    BACKGROUND: Comparisons of oxidative indices and total antioxidant status between end-stage renal disease (ESRD) patients with or without diabetes is scant, especially in the Asian population.
    METHOD: The assays were carried out according to known established protocols.
    RESULT: The present study showed that ESRD patients with or without non-insulin-dependent diabetes mellitus (NIDDM) did not have any significant differences in antioxidant enzyme activities, advanced glycated end products (AGE), advanced oxidized protein products (AOPP) and ferric reducing ability of plasma (FRAP), indicating that hyperglycemia does not exacerbate oxidative damage in ESRD. The regulation of catalase and glutathione peroxidase is also altered in ESRD. Elevated FRAP was observed in both ESRD groups (with and without NIDDM). The dialysis process did not alter the antioxidant enzyme activities but decreased AGEs and FRAP and increased AOPP levels.
    CONCLUSION: Oxidative stress is present in ESRD but this is not significantly exacerbated by hyperglycemia. The contribution of components in the pathology of renal failure towards oxidative stress exceeds that of hyperglycemia.
  16. Khong JHC, Tuan Mahmood TM, Tan SL, Voo JYH, Wong SW
    PLoS One, 2024;19(7):e0304974.
    PMID: 38991042 DOI: 10.1371/journal.pone.0304974
    BACKGROUND: Food-drug interaction (FDI) is prevalent in our day-to-day life. Widely recognised as drug expert, pharmacists are responsible to provide patient education, including on FDI, to ensure optimum safety and efficacy of treatment. Most pharmacists have knowledge and experience regarding FDI to certain extent. However, the level of knowledge, attitude and practice (KAP) towards FDI among pharmacists were yet to elucidated for many countries, including for Malaysia.

    OBJECTIVE: This study aims to assess pharmacists' KAP on FDI, their inter-association, as well as association with sociodemographic characteristics in Sabah, Malaysia.

    METHODS & MATERIALS: A cross-sectional study was conducted from 1 to 31 May 2023, using online, self-administered Google Form questionnaire, involving 24 government hospitals and 113 government health clinics in Sabah.

    RESULTS: A total of 273 (or 35.5%) out of 768 pharmacists responded. Over two-third were female and serving government hospitals (79.6%). Mean score of KAP were 72.5 ± 14.3%, 93.2 ± 8.3% and 56.0 ± 16.7%, respectively, reflected good attitude but moderate knowledge and practice. Knowledge gaps identified include common medications such as paracetamol and metformin.Additionally, 28.2% respondents reported lack of FDI coverage during undergraduate, while merely 17.2% have received formal training on FDI after started working. Although 89.0% respondents agree that informing patients about possible FDIs is their responsibility, only 35.9% of the respondents usually or always practiced this. Such discrepancy maybe attributed to insufficient pharmacists' knowledge on FDI, where pharmacists with good level of knowledge have almost 2 times higher odd for good level of practice, compared to those with poor/moderate knowledge (odds ratio, OR: 1.92; 95% CI 1.02-3.61; p = 0.040) in this study.

    CONCLUSION: There are significant training gaps to be filled in. Pharmacist possessing good knowledge is a prerequisite for better pharmacy practice. Adequate education strategies covering FDI should be emphasised for all pharmacy undergraduates and practising pharmacists.

  17. Ting YW, Wong SW, Anuar Zaini A, Mohamed R, Jalaludin MY
    Front Pediatr, 2019;7:491.
    PMID: 31850288 DOI: 10.3389/fped.2019.00491
    Background: Non-alcoholic fatty liver disease (NAFLD) among children is a growing concern with potential significant outcome. This study aims to investigate the relationship between hepatic steatosis, metabolic syndrome, and liver fibrosis among children with obesity and diabetes mellitus. Methodology: Children aged 6-18 years old were recruited from pediatric obesity and diabetes clinic in University Malaya Medical Center (UMMC) between year 2016 and 2019. Data on basic demographics, anthropometric measurements and clinical components of metabolic syndrome were collected. Transient elastography was performed with hepatic steatosis and liver fibrosis assessed by controlled attenuation parameter (CAP) and liver stiffness measurement (LSM) respectively. Mild, moderate and severe steatosis were defined as >248, >268, and >280 dB/m respectively, and LSM above 7.0 kPa for fibrosis stage F ≥ 2, 8.7 kPa for F ≥ 3, and 10.3 kPa for F4 (cirrhosis). Results: A total of 57 children (60% male) with median age of 13 years old were recruited. Fifty (87.7%) of the children are obese and 27 (54%) out of 50 are morbidly obese. Among 44 (77.2%) patients with steatosis, 40 (70.2%) had severe steatosis and 18 (40.9%) had developed liver fibrosis of stage 2 and above. Advanced fibrosis or cirrhosis was detected in 8 (18.2%) children with presence of steatosis. Twenty-three out of 57 (40.4%) was diagnosed with metabolic syndrome. Fibrosis is three times more likely to occur in the presence of metabolic syndrome (OR = 3.545, 95% CI: 1.135-11.075, p = 0.026). Waist circumference is a significant predictor of fibrosis after multiple regression analysis. Conclusion: Obese children with metabolic syndrome are more likely to have advanced liver fibrosis compared to those without metabolic syndrome. Waist circumference predicts development of liver fibrosis.
  18. Haerian BS, Sha'ari HM, Tan HJ, Fong CY, Wong SW, Ong LC, et al.
    Genomics, 2015 Apr;105(4):229-36.
    PMID: 25668517 DOI: 10.1016/j.ygeno.2015.02.001
    RAR-related orphan receptors A (RORA) and B (RORB) and voltage-gated sodium channel type 1 (SCN1A) genes play critical roles in the regulation of the circadian clock. Evidence has shown an association of RORA and RORB polymorphisms with susceptibility to autism and depression. Hence, we tested the association of RORA rs12912233, rs16943429, rs880626, rs2290430, and rs12900948; RORB rs1157358, rs7022435, rs3750420, and rs3903529; and SCN1A rs3812718 with epilepsy risk in the Malaysians. DNA was genotyped in 1789 subjects (39% epilepsy patients) by using MassARRAY (Sequenom). Significant association was obtained for rs12912233 in Malaysian Chinese (p=0.003). Interaction between rs12912233-rs880626 and rs3812718 was associated with the epilepsy risk in the subjects overall (p=0.001). Results show that RORA rs12912233 alone might be a possible risk variant for epilepsy in Malaysian Chinese, but that, together with RORA rs880626 and SCN1A rs3812718, this polymorphism may have a synergistic effect in the epilepsy risk in Malaysians.
  19. Haerian BS, Lim KS, Mohamed EH, Tan HJ, Tan CT, Raymond AA, et al.
    Seizure, 2011 Sep;20(7):546-53.
    PMID: 21530324 DOI: 10.1016/j.seizure.2011.04.003
    Approximately one third of newly treated epilepsy patients do not respond to antiepileptic drugs (AEDs). Overexpression of P-glycoprotein (P-gp) efflux transporter has been proposed to have a critical role in causing resistance to AEDs. P-gp is a product of the ATP-binding cassette subfamily B member 1 (ABCB1) gene. The purpose of this study was to investigate a possible link between ABCB1 rs3789243 C>T, C1236T, G2677T/A, rs6949448 C>T, and C3435T haplotypes with response to carbamazepine (CBZ) or sodium valproate (VPA) monotherapy in Malaysian epilepsy patients. No ABCB1 haplotype association was found with response to either CBZ or VPA monotherapy in the Chinese, Indian, and Malay patients. C3435 allele carriers of the Indian males with cryptogenic epilepsy were more prone to resistance to either CBZ or VPA than carriers of T allele. Moreover, rs3789243T allele carriers of Malay females with symptomatic epilepsy were more resistant to either CBZ or VPA than C allele carriers. Our findings suggest that the ABCB1 rs3789243 C>T, C1236T, G2677T/A, rs6949448 C>T, and C3435T haplotypes do not contribute to response to AED treatment in epilepsy.
  20. Haerian BS, Lim KS, Tan HJ, Wong CP, Wong SW, Tan CT, et al.
    Synapse, 2011 Oct;65(10):1073-9.
    PMID: 21465568 DOI: 10.1002/syn.20939
    The SYN2 rs3773364 A>G polymorphism has been proposed to be involved in susceptibility to epilepsy, but research results have been inconclusive. The aim of this study was to investigate the association between the SYN2 rs3773364 A>G polymorphism and susceptibility against epilepsy in a case-control study and a meta-analysis.
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