Displaying publications 1 - 20 of 108 in total

  1. Zain SM, Mohamed Z, Mohamed R
    J Gastroenterol Hepatol, 2015 Jan;30(1):21-7.
    PMID: 25167786 DOI: 10.1111/jgh.12714
    BACKGROUND AND AIM: Although studies have suggested that rs780094, a common variant in the glucokinase regulatory (GCKR) gene to be associated with type 2 diabetes, obesity, and their related traits, the genetic basis of the association between GCKR rs780094 and nonalcoholic fatty liver disease (NAFLD) is still being examined. This meta-analysis was performed to evaluate the effect strength caused by GCKR rs780094 on NAFLD.
    METHODS: We searched Medline, PubMed, Scopus, and Embase for relevant articles published up to April 2014. Data were extracted, and summary estimates of the association between GCKR rs780094 and NAFLD were examined. Heterogeneity and publication bias were also examined.
    RESULTS: This meta-analysis incorporated a total of 2091 NAFLD cases and 3003 controls from five studies. Overall, the pooled result indicated that the GCKR rs780094 was significantly associated with increased risk of NAFLD (additive: odds ratio (OR) 1.25, 95% confidence interval (CI) 1.14-1.36, P 
  2. Goh KL, Choi MG, Hsu WP, Chun HJ, Mahachai V, Kachintorn U, et al.
    J Gastroenterol Hepatol, 2014 Dec;29(12):1969-75.
    PMID: 24990817 DOI: 10.1111/jgh.12655
    Data on patient satisfaction with proton pump inhibitor (PPI) therapy for gastroesophageal reflux disease (GERD) are scarce in Asia. The perspectives of Asian patients with GERD and their satisfaction with PPI therapy were investigated.
  3. Law CW, Rampal S, Roslani AC, Mahadeva S
    J Gastroenterol Hepatol, 2014 Nov;29(11):1890-6.
    PMID: 24909623 DOI: 10.1111/jgh.12638
    With an increasing burden on overstretched colonoscopy services, a simple risk score for significant pathology in symptomatic patients may aid in the prioritization of patients.
  4. Chan WK, Nik Mustapha NR, Mahadeva S
    J Gastroenterol Hepatol, 2014;29(7):1470-6.
    PMID: 24548002 DOI: 10.1111/jgh.12557
    Controlled attenuation parameter (CAP) has been suggested as a noninvasive method for detection and quantification of hepatic steatosis. We aim to study the diagnostic performance of CAP in nonalcoholic fatty liver disease (NAFLD) patients.
  5. Al Batran R, Al-Bayaty F, Abdulla MA, Al-Obaidi MM, Hajrezaei M, Hassandarvish P, et al.
    J Gastroenterol Hepatol, 2013 Aug;28(8):1321-9.
    PMID: 23611708 DOI: 10.1111/jgh.12229
    Corchorus olitorius is a medicinal plant traditionally utilized as an antifertility, anti-convulsive, and purgative agent. This study aimed to evaluate the gastroprotective effect of an ethanolic extract of C. olitorius against ethanol-induced gastric ulcers in adult Sprague Dawley rats.
  6. Lee YY, Waid A, Tan HJ, Chua SB, Whitehead WE
    J Gastroenterol Hepatol, 2012 Apr;27(4):746-50.
    PMID: 22004172 DOI: 10.1111/j.1440-1746.2011.06943.x
    The Malay language is widely used within the "Malay Archipelago" particularly in Malaysia, Indonesia, Philippines, Singapore and Brunei with a combined population of 300 million. There are no reliable data on the epidemiology of irritable bowel syndrome (IBS) in the Malay speaking population because the Rome Diagnostic Questionnaire has not been translated and validated for the Malay language. The current study aimed to translate and validate the Rome III IBS Diagnostic Questionnaire, Red Flag and Psychosocial Alarm questionnaires into the Malay language.
  7. Qua CS, Goh KL
    J Gastroenterol Hepatol, 2011 Aug;26(8):1333-7.
    PMID: 21443669 DOI: 10.1111/j.1440-1746.2011.06732.x
    To determine the etiology of liver cirrhosis and risk factors for hepatocellular carcinoma (HCC) in a multiracial Asian population.
  8. Goh KL
    J Gastroenterol Hepatol, 2011 Apr;26 Suppl 3:35-8.
    PMID: 21443706 DOI: 10.1111/j.1440-1746.2011.06648.x
    Dyspepsia is perhaps the most common gastrointestinal disease universally. The prevalence of dyspepsia ranges from 7-40% in population based studies worldwide. These figures vary with definition of dyspepsia used and also with the survey methodology. As with Western studies, functional dyspepsia (FD) predominates in Asia. With a decline in peptic ulcer disease and gastric cancer, the proportion of FD is set to increase further. Studies have shown FD to account for 50-70% of cases of uninvestigated dyspepsia. In Malaysia dyspepsia has been reported in up to 15% of a rural and 25% of an urban population. No racial differences were seen in the rural survey. In the urban survey, Malays and Indians were found to have significantly more dyspepsia than Chinese. No clear explanation can be found for these racial differences. In clinical practice, Malays seem to complain a lot of wind and bloating in the "stomach." This is interesting to note when you compare it with the prevalence of H. pylori which is distinctly less common amongst Malays compared to the Indians and Chinese. As with many Asian populations, many Malaysians do not consult for complains of dyspepsia. Many will self medicate and others may even bear with their complains. This is probably true in the rural population. Traditional medications are often used and these are often ethnic based. Different types of lotions for example are used for massaging the putative area in the abdomen by Malay, Chinese and Indian patients. Moxibustion and acupuncture is still practiced by Chinese traditional physicians for treatment of dyspepsia. The notion that mood disorders may underlies dyspepsia is still poorly accepted by a less educated or rural population who consider a psychiatric consultation a taboo. Amongst urban dwellers where Westernized medical care is readily available and the awareness of potential serious disease like cancer is higher, consultation for dyspepsia is certainly higher. Indeed a higher education level has been identified as independent risk factors for dyspepsia in both an urban and rural population survey in Malaysia. With greater consultation for dyspepsia, there has also been a higher demand and utilization of endoscopy services for investigation of gastrointestinal diseases in the country.
  9. Mahadeva S, Goh KL
    J Gastroenterol Hepatol, 2011 Apr;26 Suppl 3:49-52.
    PMID: 21443710 DOI: 10.1111/j.1440-1746.2011.06656.x
    The role of psychological disturbance in the pathogenesis of functional dyspepsia is uncertain. We aimed to examine for differences in anxiety, depression and health-related quality of life (HRQOL) between adults with organic (OD) and functional dyspepsia (FD).

    A prospective, cross-sectional study of Malaysian adults undergoing oesophago-gastro-duodenoscopy (OGDS) for the primary indication of dyspepsia was conducted. Prior to OGDS, locally translated and validated versions of the Hospital Anxiety and Depression Scale (HADS), Nepean Dyspepsia Index (NDI) and Leeds Dyspepsia Questionnaire (LDQ) were administered.

    839 patients (mean age 49.6 ± 15.8 years, 55.7% female, ethnic division: Malays 30.5% , Chinese 38.4%, Indians 29.4%) were studied between June 2008 and March 2009. 472 (56.3%) and 367 (43.7%) patients had FD and OD respectively. There was no difference in the mean LDQ score between FD and OD patients (18.6 vs 18.1, P = 0.4). Moderate/severe anxiety was more prevalent in FD compared to OD patients (28.5% vs 23.1%, P = 0.05) but there was no significant difference in depression. Summary scores for the NDI revealed a lower mean value in FD patients compared to OD patients (68.6 ± 19.5 vs 71.4 ± 19.6, P = 0.04).

    Patients with FD have a lower HRQOL compared to those with OD, but this could not be attributed to differences in anxiety nor depression between both groups.
  10. Mahadeva S, Chan WK, Mohazmi M, Sujarita R, Goh KL
    J Gastroenterol Hepatol, 2011 Nov;26(11):1669-76.
    PMID: 21649731 DOI: 10.1111/j.1440-1746.2011.06806.x
    Outcome measures for clinical trials in dyspepsia require an assessment of symptom response. There is a lack of validated instruments assessing dyspepsia symptoms in the Asian region. We aimed to translate and validate the Leeds Dyspepsia Questionnaire (LDQ) in a multi-ethnic Asian population.

    A Malay and culturally adapted English version of the LDQ were developed according to established protocols. Psychometric evaluation was performed by assessing the validity, internal consistency, test-retest reliability and responsiveness of the instruments in both primary and secondary care patients.

    Between April and September 2010, both Malay (n=166) and Malaysian English (n=154) versions were assessed in primary and secondary care patients. Both language versions were found to be reliable (internal consistency was 0.80 and 0.74 (Cronbach's α) for Malay and English, respectively; spearman's correlation coefficient for test-retest reliability was 0.98 for both versions), valid (area under receiver operating curve for accuracy of diagnosing dyspepsia was 0.71 and 0.77 for Malay and English versions, respectively), discriminative (median LDQ score discriminated between primary and secondary care patients in Malay (11.0 vs 20.0, P<0.0001) and English (10.0 vs 14.0, P=0.001), and responsive (median LDQ score reduced after treatment in Malay (17.0 to 14.0, P=0.08) and English (18.0 to 11.0, P=0.008) to dyspepsia.

    The Malaysian versions of the LDQ are valid, reliable and responsive instruments for assessing symptoms in a multi-ethnic Asian population with dyspepsia.
  11. Schmidt HM, Ha DM, Taylor EF, Kovach Z, Goh KL, Fock KM, et al.
    J Gastroenterol Hepatol, 2011 Dec;26(12):1725-32.
    PMID: 21649724 DOI: 10.1111/j.1440-1746.2011.06799.x
    BACKGROUND AND AIM: The contribution of human genetic polymorphisms to Helicobacter pylori infection and gastric cancer (GC) development remains unclear due to geographic variation in the association between specific host genetic polymorphisms and GC. In the current study we investigated the association between polymorphisms related to immune and cancer-related pathways and H. pylori infection among the major ethnicities, Chinese, Malay and Indian, resident in Singapore and Malaysia as well as the association between these polymorphisms and GC development in ethnic Chinese patients.

    METHODS: Thirty-four polymorphisms in 26 genes were typed by mass spectrometry in 422 patients undergoing endoscopy (162 Chinese, 113 Indian and 87 Malay controls and 60 Chinese GC cases). Patients were assessed for evidence of H. pylori infection. Odds ratios (OR) and confidence intervals (CI) were obtained using logistic regression models.

    RESULT: The prevalence of 16 polymorphisms varied significantly among the ethnicities. In the Chinese subgroup, nominally significant associations were shown between (i) EBBR2+1963G (rs1801200) and H. pylori infection (per-allele OR: 0.48, 95% CI 0.23, 0.98, P = 0.04), (ii) PTGS2-1195G (rs689466) and an increased risk of GC on adjusting for H. pylori status (OR: 1.53, 95% CI 0.99, 2.37, P = 0.05), and (iii) IL1B-1473C (rs1143623) and a decreased risk of GC (OR: 0.64, 95% CI 0.41, 0.99, P = 0.05). Borderline significant associations were seen between IL2-330G (rs2069762) (OR 1.45, 95% CI 0.95, 2.15, P = 0.06) and IL13-1111T (rs1800925) (OR 0.65, 95% CI 0.42, 1.01, P = 0.06) and H. pylori infection.

    CONCLUSION: These findings contribute to the understanding of the genetic variation between ethnicities, which may influence H. pylori susceptibility and the outcome of infection.

  12. Alwahaibi NY, Budin SB, Mohamed J, Alhamdani A
    J Gastroenterol Hepatol, 2010 Apr;25(4):786-91.
    PMID: 20492335 DOI: 10.1111/j.1440-1746.2009.06160.x
    Selenium's molecular mechanism for cancer chemoprevention remains unknown. We aimed to study the gene expression of nuclear factor-kappaB (NF-kappaB), tumor growth factor-alpha (TGF-alpha) and cyclin D1 and the effects of sodium selenite using preventive and therapeutic approaches in chemically-induced hepatocarcinogenesis in rats.
  13. Goh KL
    J Gastroenterol Hepatol, 2011 Jan;26 Suppl 1:2-10.
    PMID: 21199509 DOI: 10.1111/j.1440-1746.2010.06534.x
    Gastroesophageal reflux disease (GERD), previously uncommon in Asia, has now become an important disease in the region. Although much variability exists between studies, most endoscopy-based studies show a prevalence of erosive esophagitis of more than 10%. Symptom-based studies also show a prevalence of 6-10%. Two longitudinal follow-up studies on GERD symptoms have shown an increase with time, and several endoscopy-based time trend studies have also shown a significant increase in erosive reflux esophagitis. Studies on Barrett's esophagus have been confounded by the description of short (SSBE) and long segment (LSBE) Barrett's esophagus. Great variation in prevalence rates has been reported. SSBE vary from 0.1% to more than 20% while LSBE vary from 1-2%. Of the putative causative factors, obesity has been the most important. Many studies have linked GERD-esophagitis as well as occurrence of reflux symptoms with an increase in body mass index (BMI), obesity, especially visceral or central obesity, and metabolic syndrome. A decline in Helicobacter pylori infection with growing affluence in Asia has been broadly thought to result in healthier stomachs and a higher gastric acid output resulting in reflux disease. However, variable results have been obtained from association and H. pylori eradication studies.
  14. Mohd H, Qua CS, Wong CH, Azman W, Goh KL
    J Gastroenterol Hepatol, 2009 Feb;24(2):288-93.
    PMID: 19054255 DOI: 10.1111/j.1440-1746.2008.05702.x
    Gastroesophageal reflux disease is thought to be the commonest cause of 'non-cardiac chest pain'. The use of proton-pump inhibitors resulting in improvement in the chest pain symptom would support this causal association.
  15. Tan HJ, Rizal AM, Rosmadi MY, Goh KL
    J Gastroenterol Hepatol, 2006 Jan;21(1 Pt 1):110-5.
    PMID: 16706821
    The role of Helicobacter pylori (HP) in non-ulcer dyspepsia is debatable. Eradicating HP will help a small group of non-ulcer dyspeptic patients. However, it is unclear which subgroup of patients will benefit from eradication therapy. The aim of the present study was to compare the cagA and cagE status, as well as vacA genotypes, of HP in non-ulcer dyspeptic patients who responded successfully to eradication therapy compared with those patients who did not.
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