Displaying publications 461 - 480 of 5466 in total

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  1. Majid Y, Warade M, Sinha J, Kalyanpur A, Gupta T
    Biomed Imaging Interv J, 2011 01 01;7(1):e2.
    PMID: 21655111 DOI: 10.2349/biij.7.1.e2
    Noninvasive imaging of coronary artery disease is rapidly replacing angiography as the first line of investigation. Multislice CT is the non-invasive modality of choice for imaging coronary artery disease and provides high speed with good spatial resolution. CT coronary angiography in addition to detecting and characterising atherosclerotic coronary artery disease is also a good imaging tool for evaluating anomalies of coronary arteries. Superdominant right coronary artery with absent left circumflex artery is one such rare coronary artery anomaly which is well evaluated with multislice CT angiography. The authors report one such case of superdominant right coronary artery with absent left circumflex artery imaged with 64-slice MDCT.
    Matched MeSH terms: Coronary Artery Disease
  2. Simon N, de Roiste M, Crozier M, Abdul Ghani Rafek
    Sains Malaysiana, 2017;46:27-34.
    In the literatures, discussions on the accuracy of different models for landslide analysis have been discussed widely.
    However, to date, arguments on the type of input data (landslides in the form of point or polygon) and how they affect
    the accuracy of these models can hardly be found. This study assesses how different types of data (point or polygon)
    applied to the same model influence the accuracy of the model in determining areas susceptible to landsliding. A total
    of 137 landslides was digitised as polygon (areal) units and then transformed into points; forming two separate datasets
    both representing the same landslides within the study area. These datasets were later separated into training and
    validation datasets. The polygon unit dataset uses the area density technique reported as percentage, while the point
    data uses the landslide density technique, as means of assigning weighting to landslide factor maps to generate the
    landslide susceptibility map that is based on the analytical hierarchy process (AHP) model. Both data groups show striking
    differences in terms of mapping accuracy for both training and validation datasets. The final landslide susceptibility
    map using area density (polygon) as input only has 48% (training) and 35% (validation) accuracy. The accuracy for
    the susceptibility map using the landslide density as input data achieved 89% and 82% for both training and validation
    datasets, respectively. This result showed that the selection of the type of data for landslide analysis can be critical in
    producing an acceptable level of accuracy for the landslide susceptibility map. The authors hope that the finding of this
    research will assist landslide investigators to determine the appropriateness of the type of landslide data because it will
    influence the accuracy of the final landslide potential map.
    Matched MeSH terms: Disease Susceptibility
  3. Lee NY, Khoo WK, Adnan MA, Mahalingam TP, Fernandez AR, Jeevaratnam K
    J Pharm Pharmacol, 2016 Jun 10.
    PMID: 27283048 DOI: 10.1111/jphp.12565
    Phyllanthus niruri is a traditional shrub of the genus Phyllanthaceae with long-standing Ayurvedic, Chinese and Malay ethnomedical records. Preliminary studies from cell and animal model have provided valuable scientific evidence for its use.
    Matched MeSH terms: Disease Models, Animal
  4. Nellis S, Loong SK, Abd-Jamil J, Fauzi R, AbuBakar S
    Geospat Health, 2021 11 03;16(2).
    PMID: 34730321 DOI: 10.4081/gh.2021.1008
    Dengue is a complex disease with an increasing number of infections worldwide. This study aimed to analyse spatiotemporal dengue outbreaks using geospatial techniques and examine the effects of the weather on dengue outbreaks in the Klang Valley area, Kuala Lumpur, Malaysia. Daily weather variables including rainfall, temperature (maximum and minimum) and wind speed were acquired together with the daily reported dengue cases data from 2001 to 2011 and converted into geospatial format to identify whether there was a specific pattern of the dengue outbreaks. The association between these variables and dengue outbreaks was assessed using Spearman's correlation. The result showed that dengue outbreaks consistently occurred in the study area during a 11-year study period. And that the strongest outbreaks frequently occurred in two high-rise apartment buildings located in Kuala Lumpur City centre. The results also show significant negative correlations between maximum temperature and minimum temperature on dengue outbreaks around the study area as well as in the area of the high-rise apartment buildings in Kuala Lumpur City centre.
    Matched MeSH terms: Disease Outbreaks
  5. Xie Q, Sundararaj V, Mr R
    J Community Psychol, 2022 Mar;50(2):806-822.
    PMID: 34368961 DOI: 10.1002/jcop.22681
    The early 2020 witnessed Coronavirus disease 2019 (COVID-19) pandemic followed by a nationwide lockdown in the whole history for the first time. The entire world had to go for nationwide lockdown to curb the spread of such contagious and deadly disease. In short, the coronavirus outbreak and the subsequent lockdown had created a storm in the world giving rise to change in public with respect to parameters like trust in the government institutions, civic engagement, and so on. In this raising dilemma, multiple countries have acknowledged the significance of trusting institutions, especially during lockdown. It is also widely accepted that lives of individuals had been undergoing change ever since the spread of COVID-19. Likewise, public's trust in the institutions is directly related to the civic engagement. Civic engagement is commonly understood as a phenomenon that develops a difference in an individual's civic life by combining values, skills, motivation, as well as knowledge. Different forms of civic engagement include national service, volunteering, societal services, and so forth. The main focus of this article is to examine the influence of COVID-19 outbreak on general attitude of the citizens of Malaysia and India, their trust on the governing institutions, and the civic engagement. In other words, this study tries to assess the impact of the pandemic on variables such as attitude toward the lockdown, trust in institutions, and civic engagement. For this, the study adopted cross-sectional community questionnaire survey in two countries-Malaysia and India. The respondents selected for the study was 1437. The respondent's demographics, attitude toward lockdown, trust in institutions, and civic engagement during the lockdown were collected by means of convenience sampling technique. Later the collected data were measured in terms of descriptive statistics and regression analysis. Findings of the study stated that public's trust in the institution can be increased by enhancing the civic activities and implementing policies that govern and build the society.
    Matched MeSH terms: Communicable Disease Control
  6. Chan NN, Ong KW, Siau CS, Lee KW, Peh SC, Yacob S, et al.
    BMC Public Health, 2022 02 14;22(1):296.
    PMID: 35164734 DOI: 10.1186/s12889-022-12632-z
    BACKGROUND: The COVID-19 pandemic has resulted in a global health emergency and lock-down measures to curb the uncontrolled transmission chain. Vaccination is an effective measure against COVID-19 infections. In Malaysia amidst the national immunisation programme (NIP) which started in February 2021, there were rising concerns regarding the prevalence of vaccine hesitancy and refusal, and therefore, vaccine uptake among Malaysians. Although there are many quantitative studies on COVID-19 vaccination, the subjective experience of individuals was understudied. This study aims to explore the lived experiences of Malaysians regarding vaccine hesitancy and refusal, and facilitating factors that could enhance vaccine acceptance and uptake.

    METHODS: This qualitative study employed the hermeneutic phenomenological study design. Purposive sampling strategies were used to recruit Malaysians that had direct experiences with friends, family members and their community who were hesitating or refusing to accept the COVID-19 vaccines. A semi-structured interview guide was developed based on the expert knowledge of the investigators and existing literature on the topic. A series of focus group interviews (FGIs) was conducted online facilitated by a multidisciplinary team of experts. The group interviews were transcribed verbatim and analysed.

    RESULTS: Fifty-nine participants took part in seven FGIs. We found that "incongruence" was the overall thematic meaning that connected all the 3 main themes. These themes comprise firstly, the incongruence between the aims and implementation of the National Immunization Program which highlighted the gap between realities and needs on the ground. Secondly, the incongruence between Trust and Mistrust revealed a trust deficit in the government, COVID-19 news, and younger people's preference to follow the examples of local vaccination "heroes". Thirdly, the incongruence in communication showed the populace's mixed views regarding official media and local social media.

    CONCLUSIONS: This study provided rich details on the complex picture of the COVID-19 immunization program in Malaysia and its impact on vaccine hesitancy and refusal. The inter-related and incongruent factors explained the operational difficulty and complexity of the NIP and the design of an effective health communication campaign. Identified gaps such as logistical implementation and communication strategies should be noted by policymakers in implementing mitigation plans.

    Matched MeSH terms: Communicable Disease Control
  7. Washif JA, Farooq A, Krug I, Pyne DB, Verhagen E, Taylor L, et al.
    Sports Med, 2022 04;52(4):933-948.
    PMID: 34687439 DOI: 10.1007/s40279-021-01573-z
    OBJECTIVE: Our objective was to explore the training-related knowledge, beliefs, and practices of athletes and the influence of lockdowns in response to the coronavirus disease 2019 (COVID-19) pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).

    METHODS: Athletes (n = 12,526, comprising 13% world class, 21% international, 36% national, 24% state, and 6% recreational) completed an online survey that was available from 17 May to 5 July 2020 and explored their training behaviors (training knowledge, beliefs/attitudes, and practices), including specific questions on their training intensity, frequency, and session duration before and during lockdown (March-June 2020).

    RESULTS: Overall, 85% of athletes wanted to "maintain training," and 79% disagreed with the statement that it is "okay to not train during lockdown," with a greater prevalence for both in higher-level athletes. In total, 60% of athletes considered "coaching by correspondence (remote coaching)" to be sufficient (highest amongst world-class athletes). During lockdown, 

    Matched MeSH terms: Communicable Disease Control
  8. Ibrahim K, Ahmad-Annuar A
    Biochem Mol Biol Educ, 2022 09;50(5):476-478.
    PMID: 36054325 DOI: 10.1002/bmb.21665
    This article reports a session from the virtual international 2021 IUBMB/ASBMB workshop, "Teaching Science on Big Data." The awareness of using publicly available research data sets for undergraduate training is low in certain parts of the world. Final year projects always revolve around wet-lab based projects. The challenges occur during COVID-19 pandemic when it forces full lockdown to the nation, but at the same time faculty members need to provide consistent training to the students and projects to work with. We aim to identify supervisors in the faculty that are ready to convert their proposed project from wet-lab to an online-based project. As coordinators of the course we created an online survey to identify projects that can be converted into dry-lab/online projects. Our surveys identified only 32.5% projects implemented dry-lab/online based projects. Most academicians described that they are not ready or familiar to apply changes for their research design. With the unknown future of the world living with COVID-19 and directional changes of life science research toward big data driven research indeed we should be ready to adopt such changes. Awareness on reusing public data sets as tools for research should be provided to strengthen undergraduate training. Life science undergraduates should be exposed to reusing public data sets as these materials are readily available case studies that allow in depth exploration to answer specific research questions. Members of the faculty should take part to pave the way for them, ensuring that they understand that life science research revolves around a multidisciplinary field.
    Matched MeSH terms: Communicable Disease Control
  9. Aini I, Ibrahim AL, Spradbrow PB
    Res Vet Sci, 1990 Sep;49(2):216-9.
    PMID: 2236920
    The food pellet vaccine has been shown to be effective in trials conducted under laboratory and simulated field conditions. The village chickens vaccinated with the food pellet vaccine during the field trial were protected against virulent Newcastle disease virus. The efficacy of the food pellet vaccine in the field was evaluated by challenge trial in which 60 per cent protection was obtained, or by monitoring the incidence of Newcastle disease in vaccinated and unvaccinated birds. There was no report of Newcastle disease outbreaks in the vaccinated birds during the two-year period of the field trial. The ease in administering the food pellet vaccine makes it readily accepted by the farmers.
    Matched MeSH terms: Newcastle Disease/prevention & control*; Newcastle disease virus/immunology*
  10. Anis S, Masood Khan M, Ali Z, Khan A, Arsalan HM, Naeem S, et al.
    Pak J Pharm Sci, 2021 Sep;34(5):1821-1836.
    PMID: 34803021
    The COVID-19 epidemic is considered the most important health disaster of the century and the largest humanitarian crisis since World War II. In December 2019, a new respiratory disease/disorder was discovered in Wuhan, Hubei province, China and World Health Organization named it COVID-19 (coronavirus 2019). It has been diagnosed with a new class of corona virus, called SARS-CoV-2 (a serious respiratory disease). According to the history of human civilization it is affected by the incidence of disease outbreaks caused by the number of viruses. Covid-19 is rapidly spreading across the globe, due to which mankind faces major health, economic, environmental and social challenges. The outbreak of coronavirus is seriously affecting the global economy. Almost all nations have problems limiting the spread of the disease by screening and treating patients, setting up suspects by keeping in touch, blocking large gatherings, maintaining full or partial closure etc. This paper describes the impact of COVID-19 on society and the global environment, and the ways in which the disease is likely to be controlled have been discussed.
    Matched MeSH terms: Disease Outbreaks
  11. Tan AH, Lohmann K, Tay YW, Lim JL, Ahmad-Annuar A, Ramli N, et al.
    Parkinsonism Relat Disord, 2020 10;79:34-39.
    PMID: 32861104 DOI: 10.1016/j.parkreldis.2020.08.015
    BACKGROUND: An improved understanding of the genetic determinants of Parkinson's disease (PD) in underrepresented populations, and better characterization of genotype-phenotype correlations in monogenic PD, are needed. Scarce literature exists regarding the genetic aetiology of PD in Malays, who comprise 200 million individuals in South-East Asia. Phenotypic data regarding PARK-PINK1 are also limited.

    METHODS: A multi-ethnic cohort of PD patients from Malaysia (n = 499, including 185 Malays) were tested using a next-generation sequencing-based PD gene panel. The prevalence and clinico-radiological features of patients with the PINK1 p. Leu347Pro mutation are described. This mutation has previously only been reported in people of Filipino or Chamorro (native Guamanian) ancestry.

    RESULTS: Homozygous p. Leu347Pro mutations were found in five unrelated Malay patients, yielding a prevalence of 6.9% among Malays with PD onset ≤50 years (2.7% of the Malay group overall). This variant was not detected in the homozygous state in 300 Malay controls, but two were heterozygous carriers (0.67%) indicating a relatively high population frequency in keeping with the high frequency of PARK-PINK1 among Malay patients. Interesting clinical features were observed, e.g., differences in the age at PD onset and clinical progression, despite having the same point mutations. Previously unreported brain MRI abnormalities involving the corticospinal tract and hypothalamus, and "loss of the swallow tail" sign, were documented.

    CONCLUSIONS: This report contributes to the very limited literature on PD genetics in the Malay population, and more broadly to the epidemiological, phenotypic and neuroimaging characterization of PARK-PINK1. It also further supports the pathogenicity of the p. Leu347Pro variant.

    Matched MeSH terms: Parkinson Disease/genetics*; Parkinson Disease/epidemiology*; Parkinson Disease/physiopathology
  12. Ang ZY, Cheah KY, Shakirah MS, Fun WH, Anis-Syakira J, Kong YL, et al.
    Int J Environ Res Public Health, 2021 Oct 22;18(21).
    PMID: 34769629 DOI: 10.3390/ijerph182111109
    This study aimed to highlight the COVID-19 response by the Ministry of Health (MOH) and the Government of Malaysia in order to share Malaysia's lessons and to improve future pandemic preparedness. The team conducted a rapid review using publicly available information from MOH, PubMed, and World Health Organisation (WHO) Global Research on Coronavirus Disease Database to compile Malaysia's responses during the COVID-19 pandemic. Measures taken between 31 December 2019 and 3 June 2020 were classified into domains as well as the pillars described in the WHO COVID-19 Strategic Preparedness and Response Plan (WHO SPRP). Malaysia's response incorporated all pillars in the WHO SPRP and consisted of five domains, (i) whole-of-government, (ii) cordon sanitaire/lockdown, (iii) equity of access to services and supports, (iv) quarantine and isolation systems, and (v) legislation and enforcement. Some crucial measures taken were activation of a centralised multi-ministerial coordination council where MOH acted as an advisor, with collaboration from non-government organisations and private sectors which enabled an effective targeted screening approach, provision of subsidised COVID-19 treatment and screening, isolation or quarantine of all confirmed cases, close contacts and persons under investigation, with all strategies applied irrespective of citizenship. This was provided for by way of the Prevention and Control of Infectious Diseases Act 1988. A combination of these measures enabled the nation to contain the COVID-19 outbreak by the end of June 2020.
    Matched MeSH terms: Communicable Disease Control
  13. Sa'at H, Lee YK, Yoon SY, Wong SW, Woo YL, Barlow-Stewart K, et al.
    Int J Behav Med, 2022 Feb;29(1):1-13.
    PMID: 33791992 DOI: 10.1007/s12529-021-09984-y
    BACKGROUND: The uptake of risk-reducing salpingo-oophorectomy (RRSO) in Asian countries is variable despite being the most effective option for ovarian cancer risk reduction in BRCA mutation carriers. Exploration of factors which may impact the RRSO decision-making of BRCA mutation carriers from Malaysia, a developing country in Southeast Asia, was undertaken.

    METHODS: In-depth interviews with 28 Malaysian BRCA mutation carriers with a history of breast cancer were conducted in addition to observing their RRSO decision-making consultations in the clinic.

    RESULTS: The decision-making considerations among the carriers were centered around the overarching theme of "Negotiating cancer risk and womanhood priorities," with the following themes: (1) risk perception, (2) self-preservation, (3) motherhood obligation, and (4) the preciousness of marriage. Cognitive knowledge of BRCA risk was often conceptualized based on personal and family history of cancer, personal beliefs, and faith. Many women reported fears that RRSO would affect them physically and emotionally, worrying about the post-surgical impact on their motherhood responsibilities. Nevertheless, some reported feeling obliged to choose RRSO for the sake of their children. For some, their husband's support and approval were critical, with emotional well-being and sexuality reportedly perceived as important to sustaining married life. Despite reporting hesitancy toward RRSO, women's decisions about choosing this option evolved as their priorities changed at different stages of life.

    CONCLUSIONS: Recognizing during clinic encounters with Malaysian women that RRSO decision-making involves negotiating the likelihood of developing cancer with the societal priorities of being a woman, mother, and wife may serve to support their decision-making.

    Matched MeSH terms: Genetic Predisposition to Disease
  14. Tan JL, Ng KP, Ong CS, Ngeow YF
    Front Microbiol, 2017;8:2042.
    PMID: 29109707 DOI: 10.3389/fmicb.2017.02042
    Mycobacterium abscessus, a rapid-growing non-tuberculous mycobacterium, has been the cause of sporadic and outbreak infections world-wide. The subspecies in M. abscessus complex (M. abscessus, M. massiliense, and M. bolletii) are associated with different biologic and pathogenic characteristics and are known to be among the most frequently isolated opportunistic pathogens from clinical material. To date, the evolutionary forces that could have contributed to these biological and clinical differences are still unclear. We compared genome data from 243 M. abscessus strains downloaded from the NCBI ftp Refseq database to understand how the microevolutionary processes of homologous recombination and positive selection influenced the diversification of the M. abscessus complex at the subspecies level. The three subspecies are clearly separated in the Minimum Spanning Tree. Their MUMi-based genomic distances support the separation of M. massiliense and M. bolletii into two subspecies. Maximum Likelihood analysis through dN/dS (the ratio of number of non-synonymous substitutions per non-synonymous site, to the number of synonymous substitutions per synonymous site) identified distinct genes in each subspecies that could have been affected by positive selection during evolution. The results of genome-wide alignment based on concatenated locally-collinear blocks suggest that (a) recombination has affected the M. abscessus complex more than mutation and positive selection; (b) recombination occurred more frequently in M. massiliense than in the other two subspecies; and (c) the recombined segments in the three subspecies have come from different intra-species and inter-species origins. The results lead to the identification of possible gene sets that could have been responsible for the subspecies-specific features and suggest independent evolution among the three subspecies, with recombination playing a more significant role than positive selection in the diversification among members in this complex.
    Matched MeSH terms: Disease Outbreaks
  15. Mohamed Zahidi J, Ahmad N, Tay BY, Hashim R, Khoo E, Ahmad N, et al.
    Genome Announc, 2017 Aug 03;5(31).
    PMID: 28774972 DOI: 10.1128/genomeA.00689-17
    Human brucellosis is a neglected zoonotic disease and has widespread geographical distribution. Brucella melitensis has caused outbreaks and sporadic cases in Malaysia. Here, we present the whole-genome sequences of four B. melitensis strains isolated from brucellosis patients in Malaysia.
    Matched MeSH terms: Disease Outbreaks
  16. Sebastian, Patrick, Yap, Vooi Voon, Comley, Richard
    MyJurnal
    This paper presents a tracking method based on parameters between colour blobs. The colour blobs
    are obtained from segmenting the overall target into multiple colour regions. The colour regions are
    segmented using EM method that determines the normal colour distributions from the overall colour
    pixel distribution. After segmenting into different regions on the different colour layers, parameters
    can be generated between colour regions of interest. In this instance, the colour regions of interest are
    the top and bottom colour regions. The parameters that are generated from these colour regions are
    the vector magnitude, vector angle and the value difference between colour regions. These parameters
    are used as a means for tracking targets of interest. These parameters are used for tracking the target
    of interest across an array of cameras which in this instance are three cameras. Three cameras have
    been set up with different background and foreground conditions. The summarised results of tracking
    targets across three cameras have shown that the consistency of colour regions across different cameras
    and different background settings provided sufficient parameters for targets to be tracked consistently.
    Example of tracking performance across three cameras were 0.88, 0.67 and 0.55. The remaining tracking
    performances across three cameras are shown in Table 2. The tracking performance indicate that the
    parameters between colour regions were able to be used for tracking a target across different cameras
    with different background scenarios. Based on results obtained, parameters between segmented colour
    regions have indicated robustness in tracking target of interest across three cameras.
    Matched MeSH terms: Disease Vectors
  17. Nasir F, Asha'ari ZA
    Malays Fam Physician, 2017;12(2):26-28.
    PMID: 29423127
    Otitis media is a common disease encountered in the primary practice. Most cases are successfully treated with antibiotics without any sequelae. Because of these, potential serious complications of otitis media may be overlooked. We report a rare case of Bezold's abscess, as a complication of otitis media and discuss its pathophysiology and management.
    Matched MeSH terms: Disease Progression
  18. Pooi, A.H.
    MyJurnal
    This paper offers a technique to construct a prediction interval for the future value of the last variable in the vector r of m variables when the number of observed values of r is small. Denoting r(t) as the time-t value of r, we model the time-(t+1) value of the m-th variable to be dependent on the present and l-1 previous values r(t), r(t-1), …, r(t-l+1) via a conditional distribution which is derived from an (ml+1)-dimensional power-normal distribution. The 100(α / 2)% and 100(1−α / 2)% points of the conditional distribution may then be used to form a prediction interval for the future value of the m-th variable. A method is introduced to estimate the above (ml+1)-dimensional power-normal distribution such that the coverage probability of the resulting prediction interval is nearer to the target value 1- α .
    Matched MeSH terms: Disease Vectors
  19. Khan Q, Akmeliawati R, Bhatti AI, Khan MA
    ISA Trans, 2017 Jan;66:241-248.
    PMID: 27884392 DOI: 10.1016/j.isatra.2016.10.017
    This paper presents a fast terminal sliding mode based control design strategy for a class of uncertain underactuated nonlinear systems. Strategically, this development encompasses those electro-mechanical underactuated systems which can be transformed into the so-called regular form. The novelty of the proposed technique lies in the hierarchical development of a fast terminal sliding attractor design for the considered class. Having established sliding mode along the designed manifold, the close loop dynamics become finite time stable which, consequently, result in high precision. In addition, the adverse effects of the chattering phenomenon are reduced via strong reachability condition and the robustness of the system against uncertainties is confirmed theoretically. A simulation as well as experimental study of an inverted pendulum is presented to demonstrate the applicability of the proposed technique.
    Matched MeSH terms: Iatrogenic Disease
  20. Nasir F., Zamzil Amin Asha’ari
    Malays Fam Physician, 2017;12(2):26-28.
    MyJurnal
    Otitis media is a common disease encountered in the primary practice. Most cases are successfully
    treated with antibiotics without any sequelae. Because of these, potential serious complications of otitis
    media may be overlooked.
    We report a rare case of Bezold’s abscess, as a complication of otitis media and discuss its
    pathophysiology and management.
    Matched MeSH terms: Acute Disease
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