Displaying publications 1 - 20 of 52 in total

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  1. Fulltext Host tissue reaction to Gnathostoma malaysiae (Nematoda: Gnathostomidae) in Rattus surifer Miller
    Krishnasamy M, Palmieri JR, Oothuman P, Jeffery J
    Southeast Asian J. Trop. Med. Public Health, 1993 Sep;24(3):489-93.
    PMID: 8160058
    The occurrence of adult Gnathostoma malaysiae in Rattus surifer and R. tiomanicus in Malaysia has been reported but there are no known reports on the host tissue reactions. This paper reports on the gross pathology caused by G. malaysiae in a red spiny forest rat, R. surifer and the tissue reactions caused. A tumor-like growth was located on the mid-stomach wall in a female rat captured in Gunung Bachock, Kelantan, Malaysia. This growth consisted of four tunnel-like structures containing sanguinopurulent fluid and leukocytes and this structure led into a central canal. The tissue surrounding the tumor was greatly inflamed and there was localized gastritis. The tunnel-like structure was surrounded by dense fibrotic tissue. The stomach wall was devoid of superficial epithelium and smooth muscle but mucinous glands were present. The midregion of the fibrotic scar contained eggs of G. malaysiae which had evoked a strong tissue reaction and were surrounded by pus. Blood vessels were empty, dilated and had undergone vasculitis and thrombosis.
    Matched MeSH terms: Gastritis/immunology*; Gastritis/parasitology; Gastritis/pathology*
  2. Fulltext NMR-based metabolomics Reveals Alterations of Electro-acupuncture Stimulations on Chronic Atrophic Gastritis Rats
    Xu J, Zheng X, Cheng KK, Chang X, Shen G, Liu M, et al.
    Sci Rep, 2017 03 30;7:45580.
    PMID: 28358020 DOI: 10.1038/srep45580
    Chronic atrophic gastritis (CAG) is a common gastrointestinal disease which has been considered as precancerous lesions of gastric carcinoma. Previously, electro-acupuncture stimulation has been shown to be effective in ameliorating symptoms of CAG. However the underlying mechanism of this beneficial treatment is yet to be established. In the present study, an integrated histopathological examination along with molecular biological assay, as well as 1H NMR analysis of multiple biological samples (urine, serum, stomach, cortex and medulla) were employed to systematically assess the pathology of CAG and therapeutic effect of electro-acupuncture stimulation at Sibai (ST 2), Liangmen (ST 21), and Zusanli (ST 36) acupoints located in the stomach meridian using a rat model of CAG. The current results showed that CAG caused comprehensive metabolic alterations including the TCA cycle, glycolysis, membrane metabolism and catabolism, gut microbiota-related metabolism. On the other hand, electro-acupuncture treatment was found able to normalize a number of CAG-induced metabolomics changes by alleviating membrane catabolism, restoring function of neurotransmitter in brain and partially reverse the CAG-induced perturbation in gut microbiota metabolism. These findings provided new insights into the biochemistry of CAG and mechanism of the therapeutic effect of electro-acupuncture stimulations.
    Matched MeSH terms: Gastritis, Atrophic/metabolism; Gastritis, Atrophic/pathology*; Gastritis, Atrophic/therapy*
  3. Fulltext Gastritis May Boost Odds of Dementia
    Momtaz YA, Hamid TA, Ibrahim R
    Am J Alzheimers Dis Other Demen, 2014 Aug;29(5):452-6.
    PMID: 24408749 DOI: 10.1177/1533317513518654
    INTRODUCTION: Given the high prevalence of dementia and its devastating consequences, identifying risk factors for dementia is a public health priority. The present study aims to assess whether gastritis increases the odds of dementia.

    METHODOLOGY: The data for this study, consisting of 2926 community-dwelling older adults, were obtained from the National survey entitled "Mental Health and Quality of Life of Older Malaysians." Dementia was diagnosed using the Geriatric Mental State-Automated Geriatric Examination for Computer-Assisted Taxonomy.

    RESULTS: Prevalence of dementia was considerably higher among older adults with gastritis (29.5%) compared to those without gastritis (13.2%). After adjusting for age, gender, marital status, educational attainment, hypertension, stroke, and diabetes, gastritis was significantly associated with more than twice odds of dementia (adjusted odds ratio = 2.42, P < .001, 95% confidence interval = 1.68-3.49).

    CONCLUSIONS: The findings from this population-based observational study showing evidence that gastritis may increase the risk of dementia provide avenue for further inquiries into dementia.

    Matched MeSH terms: Gastritis/epidemiology*
  4. Emphysematous gastritis after metastatic malignant melanoma: a radiological surprise
    Ng CY, Hayati F, Nadarajan C
    BMJ Case Rep, 2020 Sep 09;13(9).
    PMID: 32912885 DOI: 10.1136/bcr-2020-235174
    Malignant melanoma is cancer of the skin which commonly metastasises to the stomach. There have been no reported cases of emphysematous gastritis secondary to metastasis of malignant melanomas, to date. However, a 61-year-old woman with metastatic malignant melanoma of the left great toe presented to us with symptoms of severe left hypochondrium pain associated with high-grade fever, gross abdominal distension and recurrent vomiting. Two months earlier, metastasis was observed to have spread to the stomach and inguinal lymph nodes. At this stage, the patient opted for traditional medication instead of definitive surgery and chemotherapy. Radiological imaging revealed an emphysematous change to the stomach which was radiologically consistent with gastric malignant melanoma. Unfortunately, the patient succumbed to this rare condition.
    Matched MeSH terms: Gastritis/diagnosis; Gastritis/etiology; Gastritis/physiopathology
  5. Clinical and epidemiological differences in functional dyspepsia between the East and the West
    Mahadeva S, Ford AC
    Neurogastroenterol Motil, 2016 Feb;28(2):167-74.
    PMID: 26331919 DOI: 10.1111/nmo.12657
    Functional dyspepsia (FD) is a common condition, affecting adults in both Western (North America and Europe) and Eastern (Asian) parts of the globe. The prevalence has been reported to range from 5% to 40%, largely due to variation from definition criteria and geographical location. Recent published reports in Western and Eastern populations separately indicate that differences in the epidemiology and clinical patterns of FD may exist. Such differences will have implications for the clinical management of and healthcare strategizing for FD at the local level.
    Matched MeSH terms: Gastritis
  6. Fulltext Investigating functional dyspepsia in Asia
    Lee YY, Chua AS
    J Neurogastroenterol Motil, 2012 Jul;18(3):239-45.
    PMID: 22837871 DOI: 10.5056/jnm.2012.18.3.239
    The diagnosis of functional dyspepsia (FD) is challenging since it depends largely on symptoms which are often heterogeneous and overlapping. This is particularly so in Asia with many different cultures and languages. Symptom-based diagnosis of FD based on Rome III criteria has not been fully validated and it may not be suitable in some Asian populations. Clinicians often assume that investigations in FD are not rewarding and physiological tests are often not available unless in the research setting. Investigation of alarm features and role of Helicobacter pylori in FD remain controversial but experts agreed that both should be tested. Physiological tests including gastric accommodation and chemical hypersensitivity tests are underutilized in Asia and available studies were few. While experts do not recommend routine clinical use of gastric accommodation tests but they agree that these tests can be advocated if clinically indicated. Empiric therapeutic trial is not currently a diagnostic option. The pathogenesis of FD is still poorly understood and there is a substantial placebo response. As a conclusion, a diagnosis of FD is challenging especially so in the context of Asia and despite the limitations of available physiological tests experts agreed that these tests can be advocated if and when clinically indicated.
    Matched MeSH terms: Gastritis
  7. Campylobacter pylori infection: experience in a multiracial population
    Goh KL, Peh SC, Wong NW, Parasakthi N, Puthucheary SD
    J Gastroenterol Hepatol, 1990 5 1;5(3):277-80.
    PMID: 2103410
    Over a 15-month period, 399 patients with dyspepsia were investigated for the presence of Campylobacter pylori infection. Half of the patients (50.6%) had Campylobacter organisms in the antrum of the stomach. C. pylori was found in 96.1% of patients with histological changes of chronic active gastritis in the antrum. Of patients with duodenal and gastric ulcers, 87.8% and 87.5%, respectively, had Campylobacter organisms, as did 39.3% of patients with non-ulcer dyspepsia. C. pylori infection was most commonly found in Chinese and Indians. Although the prevalence of infection appeared to increase with age, there was an equal distribution amongst the sexes.
    Matched MeSH terms: Gastritis/microbiology; Gastritis/epidemiology
  8. Helicobacter pylori and gastritis in patients with peptic ulcer and non-ulcer dyspepsia: ethnic differences in Singapore
    Kang JY, Wee A, Math MV, Guan R, Tay HH, Yap I, et al.
    Gut, 1990 Aug;31(8):850-3.
    PMID: 2387503
    Peptic ulcer occurs with different frequencies in the three main racial groups in Singapore. This study aimed firstly to determine the prevalence of Helicobacter pylori in peptic ulcer and non-ulcer dyspepsia patients of the different races and secondly, to assess the relation between H pylori, histological gastritis, patient diagnosis, and race. Gastric antral biopsy specimens from 1502 patients undergoing gastroduodenoscopy were studied and 892 (59%) were positive for H pylori. H pylori was strongly associated with gastritis: 873 of 1197 (73%) patients with gastritis were positive compared with 19 of 305 (6%) without gastritis (p less than 0.0001). The prevalences of H pylori and gastritis were similar in peptic ulcer patients of different races. Malay patients with non-ulcer dyspepsia, however, were less likely to be positive for H pylori (10 of 46 (22%] or to have antral gastritis (17 of 46 (37%] than Chinese (292 of 605 (48%) were positive for H pylori and 421 of 605 (70%) had gastritis) and Indians (35 of 61 (57%) were H pylori positive and 42 of 61 (69%) had gastritis). Patients with duodenal ulcer were more likely to be positive for H pylori than those with non-ulcer dyspepsia, even when subjects with gastritis were considered separately. While our results do not help to explain the observed racial differences in peptic ulcer frequency it may be that the pathophysiology of non-ulcer dyspepsia is different in the different races in Singapore.
    Matched MeSH terms: Gastritis/ethnology*; Gastritis/microbiology
  9. Lessons learnt from the epidemiology of Helicobacter pylori infection in Malaysia: JGHF Marshall and Warren Lecture 2017
    Goh KL
    J Gastroenterol Hepatol, 2018 Jun;33(6):1177-1184.
    PMID: 29498759 DOI: 10.1111/jgh.14131
    The study of Helicobacter pylori in Malaysia has given several important insights into the epidemiology of the infection and pathogenesis of disease. Malaysia has a multiracial Asian population with three major Asian races living together-Malay, Chinese, and Indian. Races remain fairly distinct because of a paucity of interracial marriages. The "Racial Cohort Hypothesis" proposes that the infection occurs within racial groups rather than between. As such, the high prevalence among Indians (> 50%) and Chinese (40-50%) reflects the high prevalence in their countries of origin even though migration had taken place more than two generations before. The Malays have a comparatively low prevalence of about 10-20%. Despite the high prevalence of H. pylori, the Indians have a low gastric cancer incidence of less than 10 per 100 000 per year. This is in contrast to the Chinese who has an incidence in excess of 20 per 100 000 per year. We have called this the "Indian Enigma." The reason for this enigma is unclear and is the result of interaction between bacterial virulence factors, host susceptibility, and environmental factors. Phylogenetically, Chinese bacterial strains are distinct from Indians and Malays and are predominantly hpEastAsia/hsp EAsia. CagA EPIYA motifs among Chinese belong predominantly to the more virulent ABD motif. There is no clear distinguishing profile among host genetic factors. Environmental factors particularly diet may play an important role. Indians consume chilies and curries, which may be gastro protective, whereas Chinese consume more preserved and salted foods, which are thought to be carcinogenic.
    Matched MeSH terms: Gastritis/microbiology*; Gastritis/epidemiology*
  10. Fulltext A study of the concordance between endoscopic gastritis and histological gastritis in an area with a low background prevalence of Helicobacter pylori infection
    Kaur G, Raj SM
    Singapore Med J, 2002 Feb;43(2):090-2.
    PMID: 11993896
    The concordance between endoscopic and histological gastritis was determined in 52 patients referred for upper gastrointestinal endoscopy. The study was conducted in Northeastern Peninsular Malaysia, an area with a low background prevalence of H. pylori infection. Endoscopic and histological gastritis were assessed in accordance with the Sydney System. The results showed poor concordance between endoscopic and histological gastritis even after reclassifying mild endoscopic gastritis as normal. The low prevalence of H. pylori was validated in this study.
    Matched MeSH terms: Gastritis/diagnosis*; Gastritis/pathology
  11. Helicobacter pylori management in ASEAN: The Bangkok consensus report
    Mahachai V, Vilaichone RK, Pittayanon R, Rojborwonwitaya J, Leelakusolvong S, Maneerattanaporn M, et al.
    J Gastroenterol Hepatol, 2018 Jan;33(1):37-56.
    PMID: 28762251 DOI: 10.1111/jgh.13911
    Helicobacter pylori (H. pylori) infection remains to be the major cause of important upper gastrointestinal diseases such as chronic gastritis, peptic ulcer, gastric adenocarcinoma, and mucosa-associated lymphoid tissue lymphoma. H. pylori management in ASEAN: the Bangkok consensus report gathered key opinion leaders for the region to review and evaluate clinical aspects of H. pylori infection and to develop consensus statements, rationales, and grades of recommendation for the management of H. pylori infection in clinical practice in ASEAN countries. This ASEAN Consensus consisted of 34 international experts from 10 ASEAN countries, Japan, Taiwan, and the United States. The meeting mainly focused on four issues: (i) epidemiology and disease association; (ii) diagnostic tests; (iii) management; and (iv) follow-up after eradication. The final results of each workshop were presented for consensus voting by all participants. Statements, rationale, and recommendations were developed from the available current evidence to help clinicians in the diagnosis and treatment of H. pylori and its clinical diseases.
    Matched MeSH terms: Gastritis/diagnosis; Gastritis/drug therapy*; Gastritis/microbiology*; Gastritis/epidemiology*
  12. Helicobacter pylori infection in north-eastern peninsular Malaysia. Evidence for an unusually low prevalence
    Uyub AM, Raj SM, Visvanathan R, Nazim M, Aiyar S, Anuar AK, et al.
    Scand. J. Gastroenterol., 1994 Mar;29(3):209-13.
    PMID: 8209178
    The prevalence of Helicobacter pylori infection was determined in peptic ulcer patients, in non-ulcer dyspepsia (NUD) patients, and in the general adult population. The H. pylori infection rate ascertained by microbiologic examination of multiple gastric antral biopsy specimens was 50% (17 of 34) in duodenal ulcer (DU), 5% (1 of 22) in gastric ulcer, and 9% (15 of 159) in NUD patients. A seroepidemiologic survey showed a prevalence of only 4.2% among 496 blood donors and 4.8% among 921 subjects who attended health screening clinics. H. pylori infection is relatively uncommon and does not appear to be the predominant factor in the pathogenesis of peptic ulcer disease in the area. The incidence of peptic ulcer perforations in the area in 1991-92 was 1.5 per 100,000 person-years, reflecting a relatively low frequency of peptic ulcers, which might be due to the low prevalence of H. pylori infection in the population.
    Matched MeSH terms: Gastritis/microbiology*; Gastritis/epidemiology*
  13. Fulltext The rapid urease test in the diagnosis of Helicobacter pylori infection
    Goh KL, Parasakthi N, Peh SC, Puthucheary SD, Wong NW
    Singapore Med J, 1994 Apr;35(2):161-2.
    PMID: 7939811
    With the increasing recognition of the importance of H. pylori in gastrointestinal disease, there is a need for a reliable, efficient and yet inexpensive diagnostic test. The performance of the rapid urease test (RUT) as an endoscopy suite diagnostic test was compared to the established methods of culture, histology and Gram stain of tissue smear, in 274 gastric biopsy samples. Histology had the highest sensitivity of 99.3% followed by the RUT (96.6%). Culture and Gram stain of tissue smear had 100% specificity, while the rapid urease test had 99.2% specificity. The RUT had a positive predictive value of 99.3% and a negative predictive value of 96.2%. The RUT is an inexpensive, rapid and reliable diagnostic test of H. pylori infection.
    Matched MeSH terms: Gastritis/diagnosis*; Gastritis/pathology
  14. Fulltext Clinical and histopathological relevance of helicobacter pylori BabA2 genotype
    Tariq Elhashim, M. Imad Mustafa Mahmud, Nasser Amjad, Norra Harun, Imad M. Alani
    International Medical Journal Malaysia, 2016;15(2):43-49.
    MyJurnal
    Introduction: H. pylori BabA is an outer membrane protein that mediates bacterial adherence to the gastric
    epithelium, triggers several pathways during the course of infection, and thus contributes to the disease
    development. Considering the variability in the presence of BabA coding gene (babA2) among H. pylori
    clinical strains, the aim of this study was to assess the relationship between the genotype status of H. pylori
    babA2 and the severity of clinical and histopathological outcomes. Methods: Gastric mucosal biopsy
    specimens were collected from 30 CLO test-positive patients, 16 with gastritis and 14 with peptic ulcer
    disease. Polymerase chain reaction was carried out to detect the presence of H. pylori-specific glmM gene
    and BabA coding gene (babA2). Histopathological examination was performed to evaluate the severity of H.
    pylori-associated gastric disease according to the Updated Sydney Classification System. Results: The glmM
    and babA2 genes were present in 100% and 86.7% of the tested H. pylori strains, respectively. Although
    higher degrees of inflammatory activity and H. pylori density were noted in babA2-positive biopsy
    specimens, there was no statistically significant association between babA2 genotype status and the severity
    of gastric disease. Conclusion: The babA2 genotype status of H. pylori may not be considered as a sole
    marker for determining the infection outcomes.
    Matched MeSH terms: Gastritis
  15. Genetic diversity and virulence characteristics of Helicobacter pylori isolates in different human ethnic groups
    Hanafiah A, Lopes BS
    Infect Genet Evol, 2020 Mar;78:104135.
    PMID: 31837482 DOI: 10.1016/j.meegid.2019.104135
    Helicobacter pylori is the most predominant bacterium in almost 50% of the world's population and colonization causes a persistent inflammatory response leading to chronic gastritis. It shows high genetic diversity and individuals generally harbour a distinct bacterial population. With the advancement of whole-genome sequencing technology, new H. pylori subpopulations have been identified that show admixture between various H. pylori strains. Genotypic variation of H. pylori may be related to the presence of virulence factors among strains and is associated with different outcomes of infection in different individuals. This review summarizes the genetic diversity in H. pylori strain populations and its virulence characteristics responsible for variable outcomes in different ethnic groups.
    Matched MeSH terms: Gastritis
  16. Fulltext Helicobacter pylori infection, chronic corpus atrophic gastritis and pancreatic cancer risk in the European Prospective Investigation into Cancer and Nutrition (EPIC) cohort: A nested case-control study
    Huang J, Zagai U, Hallmans G, Nyrén O, Engstrand L, Stolzenberg-Solomon R, et al.
    Int J Cancer, 2017 Apr 15;140(8):1727-1735.
    PMID: 28032715 DOI: 10.1002/ijc.30590
    The association between H. pylori infection and pancreatic cancer risk remains controversial. We conducted a nested case-control study with 448 pancreatic cancer cases and their individually matched control subjects, based on the European Prospective Investigation into Cancer and Nutrition (EPIC) cohort, to determine whether there was an altered pancreatic cancer risk associated with H. pylori infection and chronic corpus atrophic gastritis. Conditional logistic regression models were applied to calculate odds ratios (ORs) and corresponding 95% confidence intervals (CIs), adjusted for matching factors and other potential confounders. Our results showed that pancreatic cancer risk was neither associated with H. pylori seropositivity (OR = 0.96; 95% CI: 0.70, 1.31) nor CagA seropositivity (OR = 1.07; 95% CI: 0.77, 1.48). We also did not find any excess risk among individuals seropositive for H. pylori but seronegative for CagA, compared with the group seronegative for both antibodies (OR = 0.94; 95% CI: 0.63, 1.38). However, we found that chronic corpus atrophic gastritis was non-significantly associated with an increased pancreatic cancer risk (OR = 1.35; 95% CI: 0.77, 2.37), and although based on small numbers, the excess risk was particularly marked among individuals seronegative for both H. pylori and CagA (OR = 5.66; 95% CI: 1.59, 20.19, p value for interaction 
    Matched MeSH terms: Gastritis, Atrophic/genetics; Gastritis, Atrophic/microbiology*; Gastritis, Atrophic/epidemiology
  17. Fulltext A physiologic events' cascade: irritable bowel syndrome may even terminate with chronic gastritis
    Helvaci MR, Kaya H, Algin MC, Yalcin A
    Med J Malaysia, 2008 Jun;63(2):140-2.
    PMID: 18942301
    When specifically asked, about one third of people report recurrent upper abdominal discomfort, and irritable bowel syndrome (IBS) and chronic gastritis (CG) maybe the most frequently diagnosed ones among all. Consecutive patients with upper abdominal discomfort applying to the Internal Medicine Polyclinic were included into the study. IBS was diagnosed according to Rome II criteria and CG was diagnosed histologically. All cases with IBS were compared with the age and sex-matched randomly selected cases without IBS. One hundred and fifty-six patients with IBS and 179 patients without IBS were studied. CG was detected in 72.4% (113 cases) of cases with IBS, and only 36.3% (65 cases) in patients without IBS (p < 0.001). IBS probably is a cascade of many physiological events, being initiated by infection, inflammation, psychological disturbances-like many stresses and eventually leading to dysfunctions of gut and other systems of the body via a low-grade inflammatory process. CG may be one of the terminating points of the physiological events' cascade, IBS. This may explain the high prevalence of IBS in society. Keeping in mind this association will be helpful during prevention, treatment, and follow up of these common pathologies in Primary Health Centers and Internal Medicine and Gastroenterology Polyclinics for physicians.
    Matched MeSH terms: Gastritis/etiology*
  18. Further evidence of ethnic and gender differences for Helicobacter pylori infection among endoscoped patients
    Sasidharan S, Uyub AM, Azlan AA
    Trans R Soc Trop Med Hyg, 2008 Dec;102(12):1226-32.
    PMID: 18586289 DOI: 10.1016/j.trstmh.2008.05.006
    HeIicobacter pylori infection rate was determined in 697 consecutive patients with ulcer, gastritis, duodenitis and non-ulcer dyspepsia by endoscopy at a Malaysian hospital in 1999-2002. Biopsies of the gastric antrum and body were subjected to the urease test, Gram staining of impression smears and culture examination. Infection was defined as a positive result in at least one test. The infection rates were 32.1, 10.4, 20.0 and 16.2% in ulcer, gastritis, duodenitis and non-ulcer dyspepsia patients, respectively. Overall, the prevalence of H. pylori infection was 14.6%, with the rate among the Indian (21.7%), Chinese (19.2%) and Bangladeshi foreign worker (23.1%) groups significantly higher (P<0.05) than that of the Malays (5.8%). Generally, the prevalence rate among males (18.9%) was significantly higher (P<0.001) than that among females (9.0%), but for a particular ethnic group, such trend and significant differences (P<0.05) were observed only among the Malays. In terms of gender, the prevalence rates of Malay males and females were also significantly lower (P<0.05) than those of Chinese and Indians. In conclusion, there is a significant difference in H. pylori infection prevalence rates among ethnic groups (highest in Indians, then Chinese and unusually low in Malays) and gender groups (highest in males) in Malaysia.
    Matched MeSH terms: Gastritis/microbiology*
  19. Fulltext Ileal strongyloidiasis in a Malaysian patient
    Shekhar KC, Pathmanathan R, Loo VS, Chan KS
    Med J Malaysia, 1999 Sep;54(3):361-3.
    PMID: 11045064
    Matched MeSH terms: Gastritis/parasitology
  20. Recurrent abdominal pain in Malaysian children: clinical profiles and outcome
    Boey CC, Goh KL
    Dig Liver Dis, 2001 4 17;33(1):83-4.
    PMID: 11303982
    Matched MeSH terms: Gastritis/diagnosis
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