Displaying publications 1 - 20 of 43 in total

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  1. Khan JF, Shah DM, Sivapakiam S, Mokhtar S, Subramaniam M, Raman K, et al.
    Transplantation, 2021 Dec 01;105(12):2507-2512.
    PMID: 34818304 DOI: 10.1097/TP.0000000000003591
  2. Vaingankar JA, Abdin E, Chong SA, Sambasivam R, Shafie S, Ong HL, et al.
    Transcult Psychiatry, 2021 02;58(1):76-95.
    PMID: 33297859 DOI: 10.1177/1363461520976045
    This study describes the development and validation of Chinese, Malay and Tamil translations of the Positive Mental Health Instrument (PMHI) in a general population sample in Singapore. Translations were performed using two independent forward translations followed by expert panel discussions and tested for content, construct and language appropriateness using focus group discussions. The final translated tools were field-tested among 220 residents per language using self-administered questionnaires comprising the translated PMHI and other validity measures. Missing data, floor and ceiling effects, confirmatory factor analysis (CFA), internal consistency, item response theory differential item functioning (IRT-DIF) and criterion validity were assessed. A total of 10 PMHI-Chinese items, 26 PMHI-Malay items and six response categories and six PMHI-Tamil items were modified based on expert panel and focus group discussions. PMHI had low missing data and showed negative but acceptable skewness (<2) and kurtosis (<7) for all translations, except for the PMHI-Malay "spirituality" subscale (skewness: -2.8; kurtosis: 12.5). CFA showed that all three PMHI translations fulfilled the original six-factor-higher-order structure (RMSEA = 0.05, CFI = 0.962, TLI = 0.96). Cronbach's alpha coefficients for total PMHI were 0.958, 0.954, 0.945 and 0.949 in the overall sample and the Chinese, Malay and Tamil translations, respectively. The three translations of the PMHI showed expected and significant positive (r = 0.116 to 0.663) and negative correlations (r = -0.137 to -0.574) with established measures. The findings show that the Chinese, Malay and Tamil translations of the PMHI have high internal consistency and validity in this multi-ethnic population.
  3. Subramaniam M
    Med J Malaysia, 1987 Jun;42(2):129-31.
    PMID: 3503187
    A case of fictitious illness in a young Malaysian Indian male is reported and its relation to the more usual presentation of factitious disorders is discussed. Pathogenesis of this condition and its management are also suggested. Factitious disorders present not uncommonly in this country and it is important for the general duty medical officer and primary care physician to be familiar with this condition.
  4. Subramaniam M
    Med J Malaya, 1966 Sep;21(1):95-6.
    PMID: 4224886
  5. Subramaniam M, Asirdas S
    Med J Malaya, 1965 Sep;20(1):39-41.
    PMID: 4221410
  6. Verma S, Poon LY, Subramaniam M, Chong SA
    Int J Soc Psychiatry, 2005 Dec;51(4):365-71.
    PMID: 16400911
    The aims of this study were to examine the prevalence and severity of aggression in patients with first-episode psychosis and to identify the association between aggression and sociodemographic and clinical factors.
  7. Goh SE, Ong SB, Subramaniam M
    Br J Psychiatry, 1993 Feb;162:276-7.
    PMID: 8435714
  8. Adityanjee, Jayaswal SK, Chan TM, Subramaniam M
    Br J Psychiatry, 1990 Mar;156:433-5.
    PMID: 2346849
    An improvement in tardive dystonia in a patient who had received ECT for a schizophrenic psychosis is reported. The improvement suggests that the pathophysiology of tardive dystonia may involve neurotransmitter receptor changes similar to those seen in schizophrenia.
  9. Razali SM, Hasanah CI, Aminah K, Subramaniam M
    Aust N Z J Psychiatry, 1998 Dec;32(6):867-72.
    PMID: 10084352
    To show the effectiveness of incorporating religious-sociocultural components in the management of patients with generalised anxiety disorders and major depression who have strong religious and cultural backgrounds as compared with a normal psychotherapeutic approach.
  10. Subramaniam M, In LL, Kumar A, Ahmed N, Nagoor NH
    Sci Rep, 2016;6:19833.
    PMID: 26817684 DOI: 10.1038/srep19833
    Mycobacterium indicus pranii (MIP) is a non-pathogenic mycobacterium, which has been tested on several cancer types like lung and bladder where tumour regression and complete recovery was observed. In discovering the potential cytotoxic elements, a preliminary test was carried out using four different fractions consisting of live bacteria, culture supernatant, heat killed bacteria and heat killed culture supernatant of MIP against two human cancer cells A549 and CaSki by 3-(4,5-dimethyl thiazol)-2,5-diphenyl tetrazolium bromide (MTT) assay. Apoptosis was investigated in MCF-7 and ORL-115 cancer cells by poly-(ADP-ribose) polymerase (PARP) and DNA fragmentation assays. Among four MIP fractions, only heat killed MIP fraction (HKB) showed significant cytotoxicity in various cancer cells with inhibitory concentration, IC50 in the range 5.6-35.0 μl/(1.0 × 10(6) MIP cells/ml), while cytotoxicity effects were not observed in the remaining fractions. HKB did not show cytotoxic effects on non-cancerous cells contrary to cancerous cells, suggesting its safe usage and ability to differentially recognize between these cells. Evaluation on PARP assay further suggested that cytotoxicity in cancer cells were potentially induced via caspase-mediated apoptosis. The cytotoxic and apoptotic effects of MIP HKB have indicated that this fraction can be a good candidate to further identify effective anti-cancer agents.
  11. Chua YC, Abdin E, Tang C, Subramaniam M, Verma S
    Schizophr Res, 2019 09;211:63-68.
    PMID: 31327504 DOI: 10.1016/j.schres.2019.07.009
    Most studies on predictors of vocational outcomes are cross-sectional and results are varied. This study aimed to examine the vocational rates of patients with first-episode psychosis (FEP), identify factors predicting a lack of engagement in age-appropriate roles, and evaluate the predictive ability of a model with baseline sociodemographic information and 2-year symptom and functioning trajectories on vocational outcomes. The Singapore Early Psychosis Intervention Program (EPIP) has maintained a standing database on patient clinico-demographic information. The primary outcome, vocational status, was operationalized as "meaningfully employed", that is, being gainfully employed or engaged in an age-appropriate role, and "unemployed". Using logistic regression, the predictive ability of the proposed model was evaluated. Vocational data was available for 1177 patients accepted into EPIP between 2001 and 2012. At the end of two years in the service, 829 (70.4%) patients were meaningfully employed and 348 (29.6%) patients were unemployed. The binary logistic regression model on the prediction of 2-year vocational outcomes yielded an AUC of 0.759 (SE = 0.016, p-value 
  12. Vaingankar JA, Subramaniam M, Abdin E, Picco L, Chua BY, Eng GK, et al.
    Qual Life Res, 2014 Jun;23(5):1459-77.
    PMID: 24307210 DOI: 10.1007/s11136-013-0589-0
    PURPOSE: The 47-item positive mental health (PMH) instrument measures the level of PMH in multiethnic adult Asian populations. This study aimed to (1) develop a short PMH instrument and (2) establish its validity and reliability among the adult Singapore population.

    METHODS: Two separate studies were conducted among adult community-dwelling Singapore residents of Chinese, Malay or Indian ethnicity where participants completed self-administered questionnaires. In the first study, secondary data analysis was conducted using confirmatory factor analysis (CFA) to shorten the PMH instrument. In the second study, the newly developed short PMH instrument and other scales were administered to 201 residents to establish its factor structure, validity and reliability.

    RESULTS: A 20-item short PMH instrument fulfilling a higher-order six-factor structure was developed following secondary analysis. The mean age of the participants in the second study was 41 years and about 53% were women. One item with poor factor loading was further removed to generate a 19-item version of the PMH instrument. CFA demonstrated a first-order six-factor model of the short PMH instrument. The PMH-19 instrument and its subscales fulfilled criterion validity hypotheses. Internal consistency and test-retest reliability of the PMH-19 instrument were high (Cronbach's α coefficient = 0.87; intraclass correlation coefficient = 0.93, respectively).

    CONCLUSIONS: The 19-item PMH instrument is multidimensional, valid and reliable, and most importantly, with its reduced administration time, the short PMH instrument can be used to measure and evaluate PMH in Asian communities.

  13. Sreeramareddy CT, Ramakrishnareddy N, Subramaniam M
    Public Health Nutr, 2015 Nov;18(16):2906-14.
    PMID: 25435296 DOI: 10.1017/S1368980014002729
    OBJECTIVE: To examine the association between household food insecurity score and Z-scores of childhood nutritional status indicators.

    DESIGN: Population-based, cross-sectional survey, Nepal Demographic and Health Survey 2011.

    SETTING: A nationally representative sample of 11 085 households selected by a two-stage, stratified cluster sampling design to interview eligible men and women.

    SUBJECTS: Children (n 2591) aged 0-60 months in a sub-sample of households selected for men's interview.

    RESULTS: Prevalence of moderate and severe household food insecurity was 23·2% and 19·0%, respectively, for children aged 0-60 months. Weighted prevalence rates for stunting (height-for-age Z-score (HAZ)

  14. Adityanjee, Zain AM, Subramaniam M
    Psychopathology, 1991;24(1):49-52.
    PMID: 2023985 DOI: 10.1159/000284697
    A case of Koro is described in a Malaysian Chinese man in the setting of martial dysharmony and sexual rejection. A distinction is suggested between the epidemic form of Koro and the Koro symptom occurring sporadically. Existence of the sporadic Koro syndrome is discussed and a unified classificatory system is proposed.
  15. Azit NA, Sahran S, Voon Meng L, Subramaniam M, Mokhtar S, Mohammed Nawi A
    PLoS One, 2021;16(12):e0260675.
    PMID: 34882716 DOI: 10.1371/journal.pone.0260675
    Type 2 diabetes mellitus (T2DM) is increasingly known as a risk factor of hepatocellular carcinoma (HCC). In this study, we determined the risk factors associated with HCC in T2DM patients. This was a matched case-control study conducted at two hepatobiliary referral centres in a developing country. Patients' sociodemographic, clinical, and biochemical characteristics between 1 January 2012 and 30 June 2018 were extracted from the electronic medical records and analysed using multivariate logistic regression analysis. A total of 212 case-control pairs were included. Significant risk factors included Chinese and Malay ethnicities that interacted with viral hepatitis (adjusted odds ratio [AOR] = 11.77, 95% confidence interval [CI]: 1.39-99.79) and (AOR = 37.94, 95% CI: 3.92-367.61) respectively, weight loss (AOR = 5.28, 95% CI: 2.29-12.19), abdominal pain/ discomfort (AOR = 6.73, 95% CI: 3.34-13.34), alcohol (AOR = 4.08, 95% CI: 1.81-9.22), fatty liver (AOR = 3.29, 95% CI: 1.40-7.76), low platelet (AOR = 4.03, 95% CI:1.90-8.55), raised alanine transaminase (AOR = 2.11, 95% CI: 1.16-3.86). and alkaline phosphatase (ALP) levels (AOR = 2.17, 95% CI: 1.17-4.00). Statins reduced the risk of HCC by 63% (AOR = 0.37, 95% CI: 0.21-0.65). The identification of these factors aids the risk stratification for HCC among T2DM patients for early detection and decision-making in patient management in the primary care setting.
  16. Ooi KX, Poo CL, Subramaniam M, Cordell GA, Lim YM
    Phytomedicine, 2023 Feb;110:154631.
    PMID: 36621168 DOI: 10.1016/j.phymed.2022.154631
    BACKGROUND: Natural products have long been regarded as a source of anticancer compounds with low toxicity. Evidence revealed that maslinic acid (MA), a widely distributed pentacyclic triterpene in common foodstuffs, exhibited pronounced inhibitory effects against various cancer cell lines. Most cancer cells thrive by acquiring cancer hallmarks, as coined by Hanahan and Weinberg in 2000 and 2011.

    PURPOSE: This represents the first systematic review concerning the anticancer properties of MA as these cancer hallmarks are targeted. It aims to summarize the antineoplastic activities of MA, discuss the diverse mechanisms of action based on the effects of MA exerted on each hallmark.

    METHODS: A comprehensive literature search was conducted using the search terms "maslinic," "cancer," "tumor," and "neoplasm," to retrieve articles from the databases MEDLINE, EMBASE, Web of Science, and Scopus published up to September 2022. Study selection was conducted by three reviewers independently from title and abstract screening until full-text evaluation. Data extraction was done by one reviewer and counterchecked by the second reviewer.

    RESULTS: Of the 330 articles assessed, 40 papers met the inclusion criteria and revealed that MA inhibited 16 different cancer cell types. MA impacted every cancer hallmark by targeting multiple pathways.

    CONCLUSION: This review provides insights regarding the inhibitory effects of MA against various cancers and its remarkable biological properties as a pleiotropic bioactive compound, which encourage further investigations.

  17. Lau WM, Subramaniam M, Goh HH, Lim YM
    Mol Omics, 2021 04 19;17(2):252-259.
    PMID: 33346776 DOI: 10.1039/d0mo00168f
    Maslinic acid is a novel phytochemical reported to target multiple signaling pathways. A complete gene expression profile was therefore constructed to illustrate the anti-tumourigenesis effects of maslinic acid in Raji cells across five time-points. Microarray analysis was used to identify genes that were differentially expressed in maslinic acid treated Raji cells at 0, 4, 8, 12, 24 and 48 h. Extracted RNA was hybridized using the AffymetrixGeneChip to obtain expression profiles. A total of 109 genes were found to be significantly expressed over a period of 48 hours. By 12 hours, maslinic acid regulates the majority of genes involved in the cell cycle, p53 and NF-κB signaling pathways. At the same time, XAF1, APAF1, SESN3, and TP53BP2 were evidently up-regulated, while oncogenes, FAIM, CD27, and RRM2B, were down-regulated by at least 2-fold. In conclusion, maslinic acid shows an hourly progression of gene expression in Raji cells.
  18. Bauer M, Glenn T, Achtyes ED, Alda M, Agaoglu E, Altınbaş K, et al.
    J Psychosom Res, 2022 Sep;160:110982.
    PMID: 35932492 DOI: 10.1016/j.jpsychores.2022.110982
    OBJECTIVE: Circadian rhythm disruption is commonly observed in bipolar disorder (BD). Daylight is the most powerful signal to entrain the human circadian clock system. This exploratory study investigated if solar insolation at the onset location was associated with the polarity of the first episode of BD I. Solar insolation is the amount of electromagnetic energy from the Sun striking a surface area of the Earth.

    METHODS: Data from 7488 patients with BD I were collected at 75 sites in 42 countries. The first episode occurred at 591 onset locations in 67 countries at a wide range of latitudes in both hemispheres. Solar insolation values were obtained for every onset location, and the ratio of the minimum mean monthly insolation to the maximum mean monthly insolation was calculated. This ratio is largest near the equator (with little change in solar insolation over the year), and smallest near the poles (where winter insolation is very small compared to summer insolation). This ratio also applies to tropical locations which may have a cloudy wet and clear dry season, rather than winter and summer.

    RESULTS: The larger the change in solar insolation throughout the year (smaller the ratio between the minimum monthly and maximum monthly values), the greater the likelihood the first episode polarity was depression. Other associated variables were being female and increasing percentage of gross domestic product spent on country health expenditures. (All coefficients: P ≤ 0.001).

    CONCLUSION: Increased awareness and research into circadian dysfunction throughout the course of BD is warranted.

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