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  1. Fulltext Antiphospholipid antibodies among women experiencing fetal loss
    Ching YM, Arip M, Jegasothy R, Baskaran TP, Yusof AY, Bakhtiar F, et al.
    Malays J Pathol, 2013 Dec;35(2):147-51.
    PMID: 24362478 MyJurnal
    The presence of antiphospholipid antibodies (aPLs) is closely associated with thrombotic events and pregnancy complications such as recurrent pregnancy loss, preeclampsia and placental insufficiency. We investigated the presence of aPLs and its frequency among female patients with a history of fetal loss in a Malaysia population. Serum samples were collected from 108 patients who had (1) one or more unexplained deaths of morphologically normal fetuses at or beyond the 22nd week of gestation, or (2) one or more premature births of morphologically normal neonates at or before the 24th week of gestation due to eclampsia or preeclampsia, or recognized features of placental insufficiency, or (3) three or more unexplained, consecutive, spontaneous miscarriages before the 20th week of gestation. Serum was tested for aPLs subtypes: anticardiolipin (aCL), anti-beta-2- glycoprotein I (aβ2GPI), anti-beta-2-glycoprotein I dependent cardiolipin (aβ2GPI dependent CL), anti-phosphatidylcholine (aPC), anti-phosphatidylethanolamine (aPE), anti-phosphatidylinositol (aPI), anti-phosphatidylserine (aPS) and anti-sphingomyeline (aSph) by using the enzyme-linked immunosorbent assay (ELISA) method. The mean age of patients was 30±5. Four patients (3.7%) were found positive for at least one aPLs subtype. Four aPLs subtypes were detected. The most common subtypes was aβ2GPI dependent CL (3.7%), followed by aCL (2.7%), aβ2GPI (0.9%), and aPE(0.9%). In conclusion, frequency of aPLs among women with fetal loss (3.7%) in Malaysia was low with subtype aβ2GPI dependent CL being the most prevalent aPLs.
  2. Fulltext Association of CD58 polymorphism and multiple sclerosis in Malaysia: a pilot study
    Ching YM, Viswanathan S, Mohamed Nor N, Shuib S, Kamarudin B, Mansor S, et al.
    Auto- immunity highlights, 2019 Dec;10(1):13.
    PMID: 32257069 DOI: 10.1186/s13317-019-0123-7
    Background: Multiple sclerosis is an immune mediated disease targeting the central nervous system. Association of non-human leukocyte antigen gene, CD58, with multiple sclerosis has been reported in several populations but is unclear among Southeast Asians. This pilot study was conducted to explore the association between CD58 polymorphism and multiple sclerosis among the Malay population in Malaysia.

    Methods: Blood samples were collected from 27 multiple sclerosis patients, and compared with 58 age- and gender matched healthy individuals. All patients were tested negative for anti-aquaporin 4. DNA was extracted from the blood and genotyped for 3 single nucleotide polymorphisms rs12044852, rs2300747 and rs1335532 of gene CD58 by real-time PCR.

    Results: The majority of multiple sclerosis patients were female (85.2%). The general mean age of onset was 30.5 years. Genotyping results showed that frequencies of the alleles were between 40 and 50% for MS patients and healthy individuals. Association (allelic model) between multiple sclerosis and CD58 gene polymorphism alleles rs12044852 (p = 0.410), rs2300747 (p = 0.881) and rs1335532 (p = 0.407) were indistinct.

    Conclusions: The impact of the CD58 gene polymorphism was not prominent in this pilot study, implying that genetic composition contributing to multiple sclerosis may be different between different populations, thus results in a heterogeneity of disease manifestation and distribution.

  3. Fulltext Seroprevalence of diphtheria toxoid IgG antibodies in the Malaysian population
    Yusoff AF, Mohd Sharani ZZ, Kee CC, Md Iderus NH, Md Zamri ASS, Nagalingam T, et al.
    BMC Infect Dis, 2021 Jun 16;21(1):581.
    PMID: 34134646 DOI: 10.1186/s12879-021-06285-3
    BACKGROUND: Despite high childhood immunization coverage, sporadic cases of diphtheria have been reported in Malaysia in recent years. This study aims to evaluate the seroprevalence of diphtheria among the Malaysian population.

    METHODS: A total of 3317 respondents age 2 years old to 60 years old were recruited in this study from August to November 2017. Enzyme-linked immunosorbent assay (ELISA) was used to measure the level of IgG antibody against the toxoid of C. diphtheriae in the blood samples of respondents. We classified respondent antibody levels based on WHO definition, as protective (≥0.1 IU/mL) and susceptible (

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