Displaying publications 341 - 360 of 1383 in total

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  1. Qualitative study on identification of common coping strategies practised by Indigenous Peoples (Orang Asli) in Peninsular Malaysia during periods of food insecurity
    Law LS, Norhasmah S, Gan WY, Mohd Nasir MT
    Public Health Nutr, 2018 Oct;21(15):2819-2830.
    PMID: 29976262 DOI: 10.1017/S136898001800160X
    OBJECTIVE: To examine the types of coping strategies practised by Indigenous women or Orang Asli (OA) in Peninsular Malaysia during times of food shortage and to determine the level of severity for food insecurity that will trigger each specific coping strategy.

    DESIGN: A qualitative case study was conducted. Pertinent information about each type of coping strategy was gathered by in-depth interviews. To gauge the level of severity for each of the coping strategies, focus group discussions (FGD) were held. Thematic analysis was used for data analysis.

    SETTING: OA villages in the states of Kelantan, Pahang, Perak and Selangor, Malaysia.

    SUBJECTS: Sixty-one OA women from three ethnic groups (Senoi, Proto-Malay and Negrito) for in-depth interviews and nineteen OA women from the Proto-Malay ethnic group for three FGD.

    RESULTS: The findings identified twenty-nine different coping strategies and these were divided into two main themes: food consumption (sub-themes of food consumption included dietary changes, diversification of food sources, decreasing the number of people and rationing) and financial management (sub-themes of financial management included increasing household income, reducing expenses for schooling children and reducing expenses on daily necessities). Three levels of severity were derived: less severe, severe and very severe.

    CONCLUSIONS: This information would enable local authorities or non-governmental organisations to more precisely target and plan interventions to better aid the OA communities needing assistance in the areas of food sources and financial management.

    Matched MeSH terms: Asian Continental Ancestry Group/psychology*
  2. Mutations, associated with early-onset Alzheimer's disease, discovered in Asian countries
    Bagyinszky E, Youn YC, An SS, Kim S
    Clin Interv Aging, 2016;11:1467-1488.
    PMID: 27799753
    Alzheimer's disease (AD), the most common form of senile dementia, is a genetically complex disorder. In most Asian countries, the population and the number of AD patients are growing rapidly, and the genetics of AD has been extensively studied, except in Japan. However, recent studies have been started to investigate the genes and mutations associated with AD in Korea, the People's Republic of China, and Malaysia. This review describes all of the known mutations in three early-onset AD (EOAD) causative genes (APP, PSEN1, and PSEN2) that were discovered in Asian countries. Most of the EOAD-associated mutations have been detected in PSEN1, and several novel PSEN1 mutations were recently identified in patients from various parts of the world, including Asia. Until 2014, no PSEN2 mutations were found in Asian patients; however, emerging studies from Korea and the People's Republic of China discovered probably pathogenic PSEN2 mutations. Since several novel mutations were discovered in these three genes, we also discuss the predictions on their pathogenic nature. This review briefly summarizes genome-wide association studies of late-onset AD and the genes that might be associated with AD in Asian countries. Standard sequencing is a widely used method, but it has limitations in terms of time, cost, and efficacy. Next-generation sequencing strategies could facilitate genetic analysis and association studies. Genetic testing is important for the accurate diagnosis and for understanding disease-associated pathways and might also improve disease therapy and prevention.
    Matched MeSH terms: Asian Continental Ancestry Group/genetics*
  3. Approaches to study of three Chinese national groups
    Smith SN
    Br J Educ Psychol, 2001 Sep;71(Pt 3):429-41.
    PMID: 11593949
    Although numerous studies have examined the learning approaches of Chinese students, very few comparative studies have been carried out with Chinese students from different nations.
    Matched MeSH terms: Asian Continental Ancestry Group*
  4. Fulltext FineMAV: prioritizing candidate genetic variants driving local adaptations in human populations
    Szpak M, Mezzavilla M, Ayub Q, Chen Y, Xue Y, Tyler-Smith C
    Genome Biol, 2018 Jan 17;19(1):5.
    PMID: 29343290 DOI: 10.1186/s13059-017-1380-2
    We present a new method, Fine-Mapping of Adaptive Variation (FineMAV), which combines population differentiation, derived allele frequency, and molecular functionality to prioritize positively selected candidate variants for functional follow-up. We calibrate and test FineMAV using eight experimentally validated "gold standard" positively selected variants and simulations. FineMAV has good sensitivity and a low false discovery rate. Applying FineMAV to the 1000 Genomes Project Phase 3 SNP dataset, we report many novel selected variants, including ones in TGM3 and PRSS53 associated with hair phenotypes that we validate using available independent data. FineMAV is widely applicable to sequence data from both human and other species.
    Matched MeSH terms: Asian Continental Ancestry Group/genetics
  5. Fulltext Dimensionality reduction reveals fine-scale structure in the Japanese population with consequences for polygenic risk prediction
    Sakaue S, Hirata J, Kanai M, Suzuki K, Akiyama M, Lai Too C, et al.
    Nat Commun, 2020 03 26;11(1):1569.
    PMID: 32218440 DOI: 10.1038/s41467-020-15194-z
    The diversity in our genome is crucial to understanding the demographic history of worldwide populations. However, we have yet to know whether subtle genetic differences within a population can be disentangled, or whether they have an impact on complex traits. Here we apply dimensionality reduction methods (PCA, t-SNE, PCA-t-SNE, UMAP, and PCA-UMAP) to biobank-derived genomic data of a Japanese population (n = 169,719). Dimensionality reduction reveals fine-scale population structure, conspicuously differentiating adjacent insular subpopulations. We further enluciate the demographic landscape of these Japanese subpopulations using population genetics analyses. Finally, we perform phenome-wide polygenic risk score (PRS) analyses on 67 complex traits. Differences in PRS between the deconvoluted subpopulations are not always concordant with those in the observed phenotypes, suggesting that the PRS differences might reflect biases from the uncorrected structure, in a trait-dependent manner. This study suggests that such an uncorrected structure can be a potential pitfall in the clinical application of PRS.
    Matched MeSH terms: Asian Continental Ancestry Group/genetics*
  6. Fulltext Multi-ancestry genome-wide association analyses identify novel genetic mechanisms in rheumatoid arthritis
    Ishigaki K, Sakaue S, Terao C, Luo Y, Sonehara K, Yamaguchi K, et al.
    Nat Genet, 2022 Nov;54(11):1640-1651.
    PMID: 36333501 DOI: 10.1038/s41588-022-01213-w
    Rheumatoid arthritis (RA) is a highly heritable complex disease with unknown etiology. Multi-ancestry genetic research of RA promises to improve power to detect genetic signals, fine-mapping resolution and performances of polygenic risk scores (PRS). Here, we present a large-scale genome-wide association study (GWAS) of RA, which includes 276,020 samples from five ancestral groups. We conducted a multi-ancestry meta-analysis and identified 124 loci (P Asian ancestries. Our study provides several insights into the etiology of RA and improves the genetic predictability of RA.
    Matched MeSH terms: Asian Continental Ancestry Group/genetics
  7. Fulltext Molecular characterization of α- and β-thalassaemia among Malay patients
    Yatim NF, Rahim MA, Menon K, Al-Hassan FM, Ahmad R, Manocha AB, et al.
    Int J Mol Sci, 2014 May 19;15(5):8835-45.
    PMID: 24857915 DOI: 10.3390/ijms15058835
    Both α- and β-thalassaemia syndromes are public health problems in the multi-ethnic population of Malaysia. To molecularly characterise the α- and β-thalassaemia deletions and mutations among Malays from Penang, Gap-PCR and multiplexed amplification refractory mutation systems were used to study 13 α-thalassaemia determinants and 20 β-thalassaemia mutations in 28 and 40 unrelated Malays, respectively. Four α-thalassaemia deletions and mutations were demonstrated. --SEA deletion and αCSα accounted for more than 70% of the α-thalassaemia alleles. Out of the 20 β-thalassaemia alleles studied, nine different β-thalassaemia mutations were identified of which βE accounted for more than 40%. We concluded that the highest prevalence of (α- and β-thalassaemia alleles in the Malays from Penang are --SEA deletion and βE mutation, respectively.
    Matched MeSH terms: Asian Continental Ancestry Group/genetics*
  8. Fulltext Trends in all-cause mortality among adults with diagnosed type 2 diabetes in West Malaysia: 2010 - 2019
    Lim LL, Abdul Aziz A, Dakin H, Buckell J, Woon YL, Roope L, et al.
    Diabetes Res Clin Pract, 2023 Nov;205:110944.
    PMID: 37804999 DOI: 10.1016/j.diabres.2023.110944
    AIMS: We determined 10-year all-cause mortality trends in diagnosed type 2 diabetes (T2D) population in West Malaysia, a middle-income country in the Western-Pacific region.

    METHODS: One million T2D people aged 40-79 registered in the National Diabetes Registry (2009-2018) were linked to death records (censored on 31 December 2019). Standardized absolute mortality rates and standardized mortality ratios (SMRs) were estimated relative to the Malaysian general population, and standardized to the 2019 registry population with respect to sex, age group, and disease duration.

    RESULTS: Overall all-cause standardized mortality rates were unchanged in both sexes. Rates increased in males aged 40-49 (annual average percent change [AAPC]: 2.46 % [95 % CI 0.42 %, 4.55 %]) and 50-59 (AAPC: 1.91 % [95 % CI 0.73 %, 3.10 %]), and females aged 40-49 (AAPC: 3.39 % [95 % CI 1.32 %, 5.50 %]). In both sexes, rates increased among those with 1) > 15 years disease duration, 2) prior cardiovascular disease, and 3) Bumiputera (Malay/native) ethnicity. The overall SMR was 1.83 (95 % CI 1.80, 1.86) for males and 1.85 (95 % CI 1.82, 1.89) for females, being higher in younger age groups and showed an increasing trend in those with either > 15 years disease duration or prior cardiovascular disease.

    CONCLUSIONS: Mortality trends worsened in certain T2D population in Malaysia.

    Matched MeSH terms: Asian Continental Ancestry Group/statistics & numerical data
  9. Fulltext Prediction equations for lung function in healthy, life time never-smoking Malaysian population
    Gnanou J, Caszo B, Mohamad WH, Nawawi H, Yusoff K, Ismail T
    Southeast Asian J Trop Med Public Health, 2011 Jul;42(4):965-76.
    PMID: 22299480
    Several equations have been used to predict lung function standard results for different populations. It is important lung function evaluations use appropriate standards for the study population. The objective of this study was to develop a prediction equation for lung function test results for the Malaysian population. Spirometry was performed among 5,708 subjects and 1,483 healthy, lifetime never smoked subjects (386 males and 1,097 females). Prediction equations were derived for both men and women for FVC and FEV1 results. The equations were validated on new subjects (n = 532, 222 males and 310 females) who met the same inclusion and exclusion criteria as the main cohort. There was a positive correlation between the measured values and the values derived from the new prediction equations (0.62 for FEV1 and between 0.66 and 0.67 for FVC; both p < 0.05) for both men and women with a smaller bias and limit of agreement compared to the published reference equations of ECCS, Knudson, Crapo and NHANES III. The reference equations derived from local spirometry data were more appropriate than generally used equations based on data from previous studies in different population.
    Matched MeSH terms: Asian Continental Ancestry Group*
  10. HLA and filariasis in Sri Lankans and Indians
    Chan SH, Dissanayake S, Mak JW, Ismail MM, Wee GB, Srinivasan N, et al.
    Southeast Asian J Trop Med Public Health, 1984 Sep;15(3):281-6.
    PMID: 6523169
    Similar HLA association was found in patients with elephantiasis in Sri Lankans and Southern Indians. HLA-B15 was observed in 13/44 (30%) Sri Lankan patients with elephantiasis compared to 1/27 (4%) Sri Lankan controls (p = .0058; RR = 10.9) and in 5/8 (28%) Southern Indian elephantiasis compared to 10/101 (10%) Southern Indian controls (p = 0.04; RR = 3.5). In combining the data, the significance of the difference of the frequency of B15 between patients with elephantiasis and controls was even more marked (p = 0.00045; corrected p = 0.012; RR = 4.4).
    Matched MeSH terms: Asian Continental Ancestry Group*
  11. Fulltext Glucose-6-phosphate dehydrogenase deficiency: molecular heterogeneity in southeast Asian countries
    Matsuo M, Nishiyama K, Shirakawa T, Padilla CD, San LP, Suryantoro P, et al.
    Southeast Asian J Trop Med Public Health, 2003;34 Suppl 3:127-9.
    PMID: 15906715
    Glucose-6-phosphate dehydrogenase (G6PD) deficiency is common in malaria endemic regions and is estimated to affect more than 400 million people worldwide. Deficient subjects are mostly asymptomatic but clinical manifestations range from neonatal jaundice due to acute hemolytic anemia to chronic non-spherocytic hemolytic anemia. To date, biochemical parameters allowed more than 400 different G6PD variants to be distinguished thereby suggesting a vast genetic heterogeneity. So far, only a small portion of this heterogeneity has been confirmed at the DNA level with the identification of about 90 different point mutations in the G6PD coding sequence. To determine the molecular background of G6PD deficiency in Southeast Asian countries, we conducted molecular analyses of G6PD patients from the Philippines, Malaysia, Singapore, Vietnam and Indonesia. The most prevalent mutation identified differs from country to country, thus suggesting independent mutational events of the G6PD gene.
    Matched MeSH terms: Asian Continental Ancestry Group/genetics
  12. Fatty acid translocase gene CD36 rs1527483 variant influences oral fat perception in Malaysian subjects
    Ong HH, Tan YN, Say YH
    Physiol Behav, 2017 01 01;168:128-137.
    PMID: 27847178 DOI: 10.1016/j.physbeh.2016.11.006
    We determined whether single nucleotide polymorphisms (SNPs; rs1761667 and rs1527483) in the fatty acid translocase CD36 gene - a receptor for fatty acids - is associated with oral fat perception (OFP) of different fat contents in custards and commercially-available foods, and obesity measures in Malaysian subjects (n=313; 118 males, 293 ethnic Chinese; 20 ethnic Indians). A 170-mm visual analogue scale was used to assess the ratings of perceived fat content, oiliness and creaminess of 0%, 2%, 6% and 10% fat content-by-weight custards and low-fat/regular versions of commercially-available milk, mayonnaise and cream crackers. Overall, the subjects managed to significantly discriminate the fat content, oiliness and creaminess between low-fat/regular versions of milk and mayonnaise. Females rated the perception of fat content and oiliness of both milks higher, but ethnicity, obesity and adiposity status did not seem to play a role in influencing most of OFP. The overall minor allele frequencies for rs1761667 and rs1527483 were 0.30 and 0.26, respectively. Females and individuals with rs1527483 TT genotype significantly perceived greater creaminess of 10% fat-by-weight custard. Also, individuals with rs1527483 TT genotype and T allele significantly perceived greater fat content of cream crackers, independent of fat concentration. rs1761667 SNP did not significantly affect OFP, except for cream crackers. Both gene variants were also not associated with obesity measures. Taken together, this study supports the notion that CD36 - specifically rs1527483, plays a role in OFP, but not in influencing obesity in Malaysian subjects. Besides, gender is an important factor for OFP, where females had higher sensitivity.
    Matched MeSH terms: Asian Continental Ancestry Group/genetics
  13. Fulltext Contribution of 6p24 to non-syndromic cleft lip and palate in a Malay population: association of variants in OFC1
    Salahshourifar I, Halim AS, Sulaiman WA, Zilfalil BA
    J Dent Res, 2011 Mar;90(3):387-91.
    PMID: 21297019 DOI: 10.1177/0022034510391798
    Non-syndromic cleft lip, with or without cleft palate, is a heterogeneous, complex disease with a high incidence in the Asian population. Several association studies have been done on cleft candidate genes, but no reports have been published thus far on the Orofacial Cleft 1 (OFC1) genomic region in an Asian population. This study investigated the association between the OFC1 genomic region and non-syndromic cleft lip with or without cleft palate in 90 Malay father-mother-offspring trios. Results showed a preferential over-transmission of a 101-bp allele of marker D6S470 in the allele- and haplotype-based transmission disequilibrium test (TDT), as well as an excess of maternal transmission. However, no significant p-value was found for a maternal genotype effect in a log-linear model, although single and double doses of the 101-bp allele showed a slightly increased cleft risk (RR = 1.37, 95% CI, 0.527-3.4, p-value = 0.516). Carrying two copies of the 101-bp allele was significantly associated with an increased cleft risk (RR = 2.53, 95% CI, 1.06-6.12, p-value = 0.035). In conclusion, we report evidence of the contribution of the OFC1 genomic region to the etiology of clefts in a Malay population.
    Matched MeSH terms: Asian Continental Ancestry Group/genetics*
  14. Fulltext PGG.SNV: understanding the evolutionary and medical implications of human single nucleotide variations in diverse populations
    Zhang C, Gao Y, Ning Z, Lu Y, Zhang X, Liu J, et al.
    Genome Biol, 2019 10 22;20(1):215.
    PMID: 31640808 DOI: 10.1186/s13059-019-1838-5
    Despite the tremendous growth of the DNA sequencing data in the last decade, our understanding of the human genome is still in its infancy. To understand the implications of genetic variants in the light of population genetics and molecular evolution, we developed a database, PGG.SNV ( https://www.pggsnv.org ), which gives much higher weight to previously under-investigated indigenous populations in Asia. PGG.SNV archives 265 million SNVs across 220,147 present-day genomes and 1018 ancient genomes, including 1009 newly sequenced genomes, representing 977 global populations. Moreover, estimation of population genetic diversity and evolutionary parameters is available in PGG.SNV, a unique feature compared with other databases.
    Matched MeSH terms: Asian Continental Ancestry Group/genetics*
  15. Fulltext Psychometric Qualities of the McMaster Family Assessment Device-General Functioning Subscale for Malaysian Samples
    Cong CW, Tan SA, Nainee S, Tan CS
    Int J Environ Res Public Health, 2022 Feb 20;19(4).
    PMID: 35206628 DOI: 10.3390/ijerph19042440
    Family functioning has been associated with psychological well-being and physical health. The 12-item McMaster Family Assessment Device-General Functioning Subscale (FAD-GF) has been widely used to assess individuals' overall level of family functioning. However, it has shown an inconsistent factor structure across various studies. The present study investigated its psychometric qualities in two studies with two different adult samples in Malaysia. In Study 1 (N = 417, 55.3% females, 19 to 26 years old), exploratory factor analyses were conducted, and four models were found: a three-factor model with 11 items, a two-factor model with 12 items, and one-factor models with six negatively worded items and six positively worded items, respectively. Study 2 (N = 358, 65.1% females, 18 to 60 years old) compared models found in past studies and those found in Study 1 through confirmatory factor analyses on another sample of adults. Among the six competing models, the two-factor model with three positively worded and three negatively worded items (i.e., FAD-GF-SF) is preferable because it did not require modification and showed a clear-cut result of goodness of fit. The subscales demonstrated satisfactory internal consistency. In conclusion, the FAD-GF-SF is a useful instrument for measuring family functioning in the Malaysian context.
    Matched MeSH terms: Asian Continental Ancestry Group*
  16. Tissue-type plasminogen activator restriction fragment length polymorphism in the Chinese, Indians and Malays of Singapore
    Saha N
    Hum Hered, 1989;39(6):364-6.
    PMID: 2575596
    A total of 215 subjects comprising 95 Chinese, 66 Malays and 54 Indians were investigated for restriction fragment length polymorphisms of the tissue-type plasminogen activator (PLAT) gene at an EcoRI site using the probe ptPA-4352. The phenotypic distribution showed a good agreement with the Hardy-Weinberg equilibrium. The gene frequencies of PLAT*1 were found to be 0.47 in the Chinese, 0.52 in the Malays and 0.41 in South Indians.
    Matched MeSH terms: Asian Continental Ancestry Group*
  17. Apolipoprotein A-IV polymorphism in Singapore ethnic groups
    Saha N
    Hum Hered, 1991;41(1):47-52.
    PMID: 2050382
    A total of 627 subjects comprising 455 Chinese, 127 Dravidian Indians and 45 Malays were investigated for serum Apo A-IV polymorphism. The frequency of Apo A-IV*2 was found to be significantly higher (p less than 0.001) in Indians (0.043) compared to that in the Chinese (0.010) and Malays (0.011). The frequency of A-IV*3 was found to be around 0.02 in all the ethnic groups. A low frequency of A-IV*4 (less than 0.01) was observed in the Chinese and Indians. The phenotypic distribution of Apo A-IV was at Hardy-Weinberg equilibrium in the three ethnic groups.
    Matched MeSH terms: Asian Continental Ancestry Group/genetics
  18. Iodine content in urine samples among Malays and aborigines
    Ali O, Muda K, Khalid B
    Acta Med Okayama, 1994 Dec;48(6):289-92.
    PMID: 7709757
    A study was conducted to compare the urinary iodine concentrations in populations from Pahang, Central Malaysia, with those in the capital city Kuala Lumpur, and to compare those of Malays from villages at Batu Talam, Batu Malim, FELDA Sungai Koyan and Hulu Sungai with neighboring aboriginal settlements at Lanai and Buntu. Two hundred and forty urine samples were collected randomly among the population (male 1 1 1 and female 129). The urinary iodine concentrations, measured by the ashing method, among Malays were as follows: Batu Talam 1.1-7.6 micrograms/dl, Batu Malim 1.4-6.6 micrograms/dl, FELDA Sungai Koyan 0.5-6.9 micrograms/dl and Hulu Sungai 0.6-9.9 micrograms/dl. Among aborigines, the urinary iodine levels were 0.1-2.9 micrograms/dl in Lanai and 1.7-6.5 micrograms/dl in Buntu. There was a significant difference in the levels of urinary iodine with regard to gender, but not regarding age. The aborigines had significantly lower iodine levels than Malays (P < 0.001). This difference was also significant with regard to location. The urinary iodine content in Kuala Lumpur was the highest and that in the aboriginal Lanai village was the lowest. Thus, the study showed that the levels of iodine in the urine were influenced by ethnicity and geographic location.
    Matched MeSH terms: Asian Continental Ancestry Group*
  19. Fulltext Accuracy of self-reported height, weight and BMI in a multiethnic Asian population
    Roystonn K, Abdin E, Sambasivam R, Zhang Y, Chang S, Shafie S, et al.
    Ann Acad Med Singap, 2021 04;50(4):306-314.
    PMID: 33990818 DOI: 10.47102/annals-acadmedsg.2020183
    INTRODUCTION: The study assessed whether self-reported height, weight and derived body mass index (BMI) can provide an accurate measure of anthropometric data in a multiethnic adult population in Singapore.

    METHODS: Standardised anthropometric measurements were compared against the self-reported values from 5,132 adult residents in a cross-sectional, epidemiological survey. Discrepancies in self-reports from measurements were examined by comparing overall mean differences. Intraclass correlations, Cohen's kappa and Bland-Altman plots with limits of agreement, and sub-analysis by sex and ethnicity were also explored.

    RESULTS: Data were obtained from 5,132 respondents. The mean age of respondents was 43.9 years. Overall, the height was overestimated (0.2cm), while there was an underestimation of weight (0.8kg) and derived BMI (0.4kg/m2). Women had a larger discrepancy in height (0.35cm, 95% confidence interval [CI] 0.22 to 0.49), weight (-0.95kg, 95% CI -1.11 to -0.79) and BMI (-0.49kg/m2, 95% CI -0.57 to -0.41) compared with men. Height reporting bias was highest among Indians (0.28cm, 95% CI 0.12 to 0.44) compared with Chinese and Malays, while weight (-1.32kg, 95% CI -1.53 to -1.11) and derived BMI (-0.57kg/m2, 95% CI -0.67 to -0.47) showed higher degrees of underreporting among Malays compared with Chinese and Indians. Substantially high self-reported versus measured values were obtained for intraclass correlations (0.96-0.99, P<0.001) and kappa (0.74). For BMI categories, good to excellent kappa agreement was observed (0.68-0.81, P<0.0001).

    CONCLUSION: Self-reported anthropometric estimates can be used, particularly in large epidemiological studies. However, sufficient care is needed when evaluating data from Indians, Malays and women as there is likely an underestimation of obesity prevalence.

    Matched MeSH terms: Asian Continental Ancestry Group/ethnology*
  20. Histamine dosage for maximal gastric secretion in Asians - a reappraisal
    Ti TK
    Ann Acad Med Singap, 1981 Apr;10(2):198-200.
    PMID: 7332283
    Paired augmented histamine tests using 40 microgram 60 microgram histamine acid phosphate (HAP) per kg body weight were conducted on each of 57 Asian subjects. The mean peak acid output (PAO) for the total series to the two different doses of HAP was 22.3 mEq/hr and 23.3 mEq/hr respectively and the difference was not statistically significant according to the paired t test. There were similarly no significant difference in PAO to the two doses of HAP in the following groups of subjects: 26 Chinese, 17 Indians, 14 Malays; 24 subjects with duodenal ulcer, 16 controls; 28 subjects with body weight below 50 kg, 19 between 50-60 kg and 10 exceeding 60 kg. These findings differ from earlier reports that for maximal gastric secretion Asians required a higher dosage of histamine compared with Caucasian subjects.
    Matched MeSH terms: Asian Continental Ancestry Group*
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