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  1. Molecular analysis of HLA Class I and Class II genes in four indigenous Malaysian populations
    Jinam TA, Saitou N, Edo J, Mahmood A, Phipps ME
    Tissue Antigens, 2010 Feb;75(2):151-8.
    PMID: 20003135 DOI: 10.1111/j.1399-0039.2009.01417.x
    This is the first report of high-resolution human leukocyte antigen (HLA) typing in four indigenous groups in Malaysia. A total of 99 normal, healthy participants representing the Negrito (Jehai and Kensiu), Proto-Malay (Temuan) and a native group of Borneo (Bidayuh) were typed for HLA-A, -B, -DRB1 and -DQB1 genes using sequence-based typing. Eleven HLA-A, 26 HLA-B, 16 HLA-DRB1 and 14 HLA-DQB1 alleles were detected, including a new allele, HLA-B*3589 in the Jehai. Highly frequent alleles were A*2407, B*1513, B*1801, DRB1*0901, DRB1*1202, DRB1*1502, DQB1*0303 and DQB1*0502. Principal component analysis based on high-resolution HLA-A, -B and -DRB1 allele frequencies showed close affinities among all four groups, including the Negritos, with other Southeast Asian populations. These results showed the scope of HLA diversity in these indigenous minority groups and may prove beneficial for future disease association, anthropological and forensic studies.
  2. An update of the general health status in the indigenous populations of Malaysia
    Jinam TA, Phipps ME, Indran M, Kuppusamy UR, Mahmood AA, Hong LC, et al.
    Ethn Health, 2008 Jun;13(3):277-87.
    PMID: 18568977 DOI: 10.1080/13557850801930478
    Health scenarios are constantly evolving, particularly in developing countries but little is known regarding the health status of indigenous groups in Malaysia. This study aims to elucidate the current health status in four indigenous populations in the country, who by and large been left out of mainstream healthcare developments.
  3. Metabolic syndrome and cardiometabolic risk factors among indigenous Malaysians
    Aghakhanian F, Wong C, Tan JSY, Yeo LF, Ramadas A, Edo J, et al.
    Public Health, 2019 Nov;176:106-113.
    PMID: 30509859 DOI: 10.1016/j.puhe.2018.10.001
    OBJECTIVES: This study was undertaken to investigate the occurrence of metabolic syndrome (MetS) and cardiovascular disease (CVD) risk in Orang Asli (OA), the indigenous people of Peninsular Malaysia. OA consist of Negrito, Proto-Malay, and Senoi groups who collectively comprise only 0.76% of the population of Peninsular Malaysia. Owing to the challenges in accessing their remote villages, these groups are often excluded in larger government health surveys. Although tropical diseases were scourges in the past, with rapid national development, many OA communities have been gradually urbanized. We believe an epidemiological transition is occurring and non-communicable diseases are on the rise.

    STUDY DESIGN: A retrospective cross-sectional study.

    METHODS: Indigenous Malaysians (n = 629) from three major groups (Negrito, Proto-Malay, and Senoi) were recruited, after ethics approval and informed consent. Body mass index (BMI), body weight, height, waist circumference, and systolic and diastolic blood pressure were measured, and participants were examined for acanthosis nigricans. Venous blood samples were used for measurements of fasting blood sugar, triglycerides (TG), total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C) and low-density lipoprotein cholesterol (LDL-C). Insulin resistance was estimated using a surrogate measurement TG/HDL-C. The ratios of TC to HDL-C, and of LDL-C to HDL-C were determined. MetS was accessed according to the Joint Interim Statement of the IDF Tsak Force on Epidemiology and Prevention.

    RESULTS: MetS affected 29.57% of the OA population investigated and was significantly more prevalent (P 

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