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  1. Neelamegam M, Looi I, Cheah WK, Narayanan P, Hamid AM, Ong LM
    Prev Med, 2013;57 Suppl:S77-9.
    PMID: 23295169 DOI: 10.1016/j.ypmed.2012.12.022
    This community based incidence study aims to report the stroke incidence in the south-west region of the Penang Island.
  2. Yiengprugsawan V, Healy J, Kendig H, Neelamegam M, Karunapema P, Kasemsup V
    Health Syst Reform, 2017 Jul 03;3(3):171-181.
    PMID: 31157585 DOI: 10.1080/23288604.2017.1356428
    This paper explores whether middle-income Asian countries are reorienting their health services in response to non-communicable diseases (NCDs). Malaysia, Sri Lanka, and Thailand were selected as case studies of Asian societies experiencing rapid increases both in NCDs and an aging population. While NCD programs, especially those related to diabetes and stroke, are well-established in Thailand, health services struggle to respond to increasing numbers of people with chronic health problems. Health services at all levels must plan ahead for more patients with chronic and often multiple conditions who require better integrated health care.
  3. Ho WY, Neelamegam M, Earnshaw VA, Chong V, Lee HG, Rajasuriar R
    AIDS Behav, 2024 May;28(5):1601-1611.
    PMID: 38261221 DOI: 10.1007/s10461-024-04272-8
    Globally and in Malaysia, there are increasing rates of HIV infection among older adults but a corresponding decline in other younger age groups. We aimed to investigate the HIV-related knowledge, perceived risks, attitudes, and risk behaviours among multi-ethnic urban-dwelling older adults in Malaysia. A cross-sectional, questionnaire-based study was conducted among 320 adults aged 50 years and above residing in urban Klang Valley, Malaysia. Participants were recruited via convenience sampling in the community and in the outpatient clinics and pharmacy of University Malaya Medical Centre, Malaysia, from April 2021 to January 2022. The median (IQR) age of participants was 58 (55-64) and 42.5% were males. The median (IQR) knowledge score was 10 (8-12) out of 14. Significant knowledge gaps were noted and ethnic Chinese, higher education levels and better HIV-related attitudes were associated with better scores. The median (IQR) attitude score was 49 (41-55) out of 65. Ethnic Chinese and Indian, knowing people living with HIV (PLHIV), and better HIV-related knowledge were associated with better attitude scores. Many (43.8%) older adults were sexually active however rates of consistent condom use was low (19%) and the majority (89.9%) of participants had low self-perceived risk of HIV. These findings highlight underlying drivers for HIV transmission and delayed treatment among older adults in Malaysia and indicate a need for targeted HIV prevention programs for this population.
  4. Neelamegam M, Nawi N, Bashah NSA, Hwei YS, Zulhaimi NS, Kamarulzaman A, et al.
    PMID: 38983023 DOI: 10.3389/fopht.2023.1251126
    OBJECTIVE: Antiretroviral therapy has decreased the prevalence of retinal opportunistic infections in people living with HIV (PLWH). However, abnormalities in visual function are evident and may be associated with an early onset of aging in PLWH. In this study, we examined the Retinal Nerve Fibre Layer (RNFL) thickness and visual function in PLWH and HIV non-infected controls in Malaysia.

    DESIGN: Cross-sectional study.

    METHODS: Two hundred and two (202) PLWH without retinal opportunistic infection and 182 age-matched, HIV seronegative individuals were enrolled. PLWH were recruited from the Infectious Disease clinic at the University Malaya Medical Centre. Controls were recruited among the hospital staff and community volunteers. RNFL thickness was measured with spectral domain optical coherence tomography (SDOCT). Visual functions include visual acuity using LogMAR chart and contrast sensitivity using Pelli- Robson Chart.

    RESULTS: All PLWH (mean age 46.1 years ± 9.9 years) in the study were on ART and 61.2% had a CD4+ T-cell count more than 500 cell/μl. The mean visual acuity was similar between the two groups (LogMAR 0.05 vs. 0.07, p = 0.115). Contrast sensitivity was lower in PLWH compared to HIV seronegative individuals (1.90 vs 1.93, p = 0.032). RNFL thickness was significantly thinner in the temporal quadrant for PLWH compared to controls (68.89 μm vs 74.08 μm, p = 0.001).

    CONCLUSION: Changes in RNFL thickness and contrast sensitivity were seen in PLWH despite their relatively young age and well controlled HIV disease. The changes reflect structural and functional deficits, and could have long-term implications on their health trajectory.

  5. Wong HY, Wong PL, Bador MK, Chong ML, Shenoi S, Rozanova J, et al.
    J Acquir Immune Defic Syndr, 2023 May 01;93(1):64-72.
    PMID: 36716735 DOI: 10.1097/QAI.0000000000003169
    BACKGROUND: In resource-limited settings, HIV-related services are often targeted to younger key populations, although increasing reports have found that adults ≥50 years now account for among the highest increase in new HIV diagnosis. We assessed the proportion of new HIV infections among older adults (≥50 years) and compared their sociodemographics, risk behaviors, and HIV-related outcomes to newly diagnosed younger adults (<50 years).

    METHODS: This retrospective analysis included all new HIV diagnosis from 2016 to 2019 at the University of Malaya Medical Centre, Malaysia. Trends of HIV diagnosis was assessed using join point regression analysis, and characteristics between the older and younger adults were compared using χ 2 test or Mann-Whitney U test. Kaplan-Meier analysis and log-rank test were used to compare the survival probability in both age groups.

    RESULTS: From a total of 594 new HIV diagnosis between 2016 and 2019, 11.5% (N = 68) were among older adults with an annual percent increase of 5.50%. Older adults were more likely ethnic Indians ( P < 0.001), acquired HIV through heterosexual contact ( P = 0.001), had late presentation to care ( P = 0.003), and multimorbidity ( P < 0.001). Immunological responses after 12 months on antiretroviral therapy were comparable in both the groups. Older adults had a higher probability of death compared with younger adults (adjusted hazard ratio 1.81, 95% confidence interval: 1.02 to 3.23, P = 0.043) after adjusting for sex, mode of HIV transmission, late presentation to care, antiretroviral therapy initiation, and multimorbidity.

    CONCLUSION: Older adults diagnosed with HIV were associated with late care presentation and increased mortality. There is an urgent need to enhance uptake of HIV testing and linkage to care among older individuals in our setting.

  6. Wong HY, Pui Li W, Abdul Kahar MKB, Chong ML, Shenoi S, Rozanova J, et al.
    Int J STD AIDS, 2024 May 09.
    PMID: 38722271 DOI: 10.1177/09564624241250378
    BACKGROUND: A substantial number of older adults succumb soon after HIV diagnosis despite ART. We explored the causes, risk factors and circumstances before death among older adults acquring HIV.

    METHODS: We recruited individuals newly diagnosed at our centre from 2016-2020 and analysed data of those who died. Patients were stratified to older (≥50 years) or younger (<50 years) based on their age at diagnosis and attributes were compared. The Cox proportional multivariable model was used to identify factors associated with all-cause mortality.

    RESULTS: Among 75 deaths reported, the majority of deaths were AIDS-related and late presentation was common in both age groups. The majority of deaths occurred in the first 12 months after care presentation and over two-thirds in both groups disengaged from care prior to death. Older age remained an independent factor associated with death after adjusting for confounders including opportunistic infections, late presentation to care, ART initiation and chronic comorbidities at presentation.

    CONCLUSION: Most causes of death in our setting were AIDS-related and associated with late care presentation both in young and older individuals, although older age at diagnosis remained an independent risk factor. Our findings highlight the urgent need to encourage prompt ART initiation following diagnosis, especially in older adults.

  7. Neelamegam M, Ahmad A, Chong ML, Wong PL, Zulhaimi NS, Cysique L, et al.
    AIDS Care, 2024 Aug;36(8):1041-1049.
    PMID: 37666210 DOI: 10.1080/09540121.2023.2254543
    HIV-associated mortality has improved with the advent of antiretroviral therapy, yet neurocognitive decline persists. We assessed the association between psychosocial risk factors and cognitive function among Malaysian PLWH. Data of virally suppressed PLWH (n = 331) on stable ART, from the Malaysian HIV and Aging study was assessed. Psychosocial factors were assessed using the Lubben Social Network Scale-6 (social isolation) and Depression Anxiety Stress Scale-21 (DASS-21). The Montreal Cognitive Assessment (MoCA) with normative standards for the Malaysian population was used to determine cognitive function. Linear and logistic regression were used to assess the associations between cognition, and psychosocial risk factors. Median age of participants was 43.8 years (IQR 37.7-51.0). Participants were predominantly male (82.8%), with secondary education or higher (85.2%). Participants were on ART for 5.7 years (IQR 3.0-9.7), with a mean MoCA score of 24.6 (±3.7). Social isolation was found in 34.6% of participants, and severe depression, severe stress, and severe anxiety in 10.6%, 15.4%, and 6.0% respectively. After adjusting for demographic, clinical, and HIV parameters, MoCA scores were significantly associated with severe stress (β = -0.11, p = 0.02) and having marginal friendship ties (β = -0.13, p = 0.03). Social isolation and severe stress are associated with neurocognitive impairment in PLWH.
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