Browse publications by year: 2021

  1. Amran MS, Jamaludin KA
    Front Public Health, 2021;9:639041.
    PMID: 34164364 DOI: 10.3389/fpubh.2021.639041
    School closures were implemented as a public health intervention to reduce the risk of infection from COVID-19. However, prolonged school closure is likely to impact adolescents' behavioral health due to the extreme change in routine. The current study aimed to explore adolescents' behavioral health experiences during the beginning of the outbreak of the COVID-19 pandemic. This study was done using qualitative methods to interview 15 adolescent participants (n =15) from low-income households in Malaysia. The study lasted for 2 months amidst the outbreak and data were collected via online based on focus group discussions. The results revealed that adolescents faced four main themes of experience during the COVID-19 pandemic: Alteration of sleep patterns, stress-related fatigue, dysfunctional eating patterns and lack of physical activity. This first-hand experience shows that knowledge and skills of adolescents' behavioral practices during outbreak deserves attention. This research stresses the role of family, schools, and media in addressing the health communication gap among adolescents to help them adapt in these new norms.
    MeSH terms: Adolescent Health*; Adolescent; Humans; Malaysia/epidemiology; Schools; Pandemics*
  2. Mousazadeh M, Niaragh EK, Usman M, Khan SU, Sandoval MA, Al-Qodah Z, et al.
    Environ Sci Pollut Res Int, 2021 Aug;28(32):43143-43172.
    PMID: 34164789 DOI: 10.1007/s11356-021-14631-w
    Electrocoagulation (EC) is one of the emerging technologies in groundwater and wastewater treatment as it combines the benefits of coagulation, sedimentation, flotation, and electrochemical oxidation processes. Extensive research efforts implementing EC technology have been executed over the last decade to treat chemical oxygen demand (COD)-rich industrial wastewaters with the aim to protect freshwater streams (e.g., rivers, lakes) from pollution. A comprehensive review of the available recent literature utilizing EC to treat wastewater with high COD levels is presented. In addition, recommendations are provided for future studies to improve the EC technology and broaden its range of application. This review paper introduces some technologies which are often adopted for industrial wastewater treatment. Then, the EC process is compared with those techniques as a treatment for COD-rich wastewater. The EC process is considered as the most privileged technology by different research groups owing to its ability to deal with abundant volumes of wastewater. After, the application of EC as a single and combined treatment for COD-rich wastewaters is thoroughly reviewed. Finally, this review attempts to highlight the potentials and limitations of EC. Related to the EC process in batch operation mode, the best operational conditions are found at 10 V and 60 min of voltage and reaction time, respectively. These last values guarantee high COD removal efficiencies of > 90%. This review also concludes that considerably large operation costs of the EC process appears to be the serious drawback and renders it as an unfeasible approach for handling of COD rich wastewaters. In the end, this review has attempted to highlights the potential and limitation of EC and suggests that vast notably research in the field of continuous flow EC system is essential to introduce this technology as a convincing wastewater technology.
    MeSH terms: Electrocoagulation; Electrodes; Industrial Waste/analysis; Waste Disposal, Fluid*; Biological Oxygen Demand Analysis; Waste Water*
  3. Satheesha NB, Soumya KV
    Kathmandu Univ Med J (KUMJ), 2021 6 25;18(72):340-343.
    PMID: 34165088
    Background Gallstone disease (GSD) is one among the most prevalent diseases that affects approximately 10-15% of the population. It is associated with many other diseases like gallbladder cancer, renal stones, atherosclerosis, coronary heart disease and stroke. Objective Objective of this study is to document the prevalence of gallstones among south Indian cadavers. Method One hundred and twenty three South Indian cadaveric livers/gallbladders were observed for the presence of gallstones. The age range was 40 to 70 years. The gallbladders were palpated to know the presence of stones. They were then dissected and the stones were classified based on appearance. Gall bladder walls were also observed to know the associated fibrosis. Result Among the cadavers studied, 0.81% possessed cholesterol stones and 4.06% had pigment stones. Among the stones, 83.33% were pigment stones and 16.66% were cholesterol stones. Conclusion Compared to the western countries and north Indian studies, the prevalence of gallstone diseaseis low in the south Indian population (4.87%). The low prevalence was probably due to the low socioeconomic status and the diet and lifestyle.
    MeSH terms: Adult; Aged; Cadaver; Cholesterol; Humans; Middle Aged; Prevalence
  4. Thevi T, Abas AL
    Kathmandu Univ Med J (KUMJ), 2021 6 25;18(72):414-419.
    PMID: 34165102
    Bauxite is an ore from which Aluminium is produced. Malaysia, once the leading producer of bauxite has reduced production as mining activity has caused community outrage. Due to concerns about health concerns, rising pollution and environmental hazards, the government has revoked the licenses of bauxite miners. We therefore did a meta-analysis to assess the relationship between exposure to Bauxite and Alumina with incidence of various types of cancers. Bauxite mines and alumina refineries. Individuals of all ages exposed to Bauxite and Alumina. Exposure to bauxite and alumina. Incidence due to overall cancers and specific types of cancers. Exposure to bauxite and alumina did not cause variations in incidence of overall cancer and specific types of cancer such as cancer of lip, cancer of the oral cavity and pharynx, cancer of digestive organs and others. We conclude that there is no evidence that bauxite or alumina exposure cause increase incidence of cancer but due to the small number of studies included in this review, we recommend more cohort studies to be done in future.
    MeSH terms: Aluminum Oxide/adverse effects; Aluminum Oxide/analysis; Humans; Malaysia; Incidence; Occupational Exposure*
  5. Sahathevan S, Khor BH, Yeong CH, Tan TH, Meera Mohaideen AK, Ng HM, et al.
    JPEN J Parenter Enteral Nutr, 2021 07;45(5):872-873.
    PMID: 34165200 DOI: 10.1002/jpen.2206
    MeSH terms: Humans; Muscles; Muscular Diseases*; Reproducibility of Results; Observer Variation
  6. Zainal Abidin N, Noorizhab MNF, Teh LK, Lim WF, Mohd Noordin N, Aziz ZA, et al.
    Microbiol Resour Announc, 2021 Jun 24;10(25):e0035221.
    PMID: 34165334 DOI: 10.1128/MRA.00352-21
    In the battle against tuberculosis (TB), plasticity of the Mycobacterium tuberculosis genome is believed to contribute to the pathogen's virulence and drug resistance. Here, we report 10 draft genome sequences of clinical M. tuberculosis isolated in Malaysia as the basis for understanding the genome plasticity of the M. tuberculosis isolates.
  7. Mangi SA, Wan Ibrahim MH, Jamaluddin N, Arshad MF, Khahro SH, Putra Jaya R
    PMID: 34165742 DOI: 10.1007/s11356-021-15006-x
    This study investigated the influence of coal bottom ash (CBA) on the concrete properties and evaluate the effects of combined exposure of sulphate and chloride conditions on the concrete containing CBA. During concrete mixing, cement was replaced with CBA by 10% of cement weight. Initially, concrete samples were kept in normal water for 28 days. Next, the specimens were moved to a combined solution of 5% sodium sulphate (Na2SO4) and 5% sodium chloride (NaCl) solution for a further 28 to 180 days. The experimental findings demonstrated that the concrete containing 10% CBA (M2) gives 12% higher compressive strength than the water cured normal concrete (M1). However, when it was exposed to a solution of 5% Na2SO4 and 5% NaCl, gives 0.2% greater compressive strength with reference to M1. The presence of 10% CBA decreases the chloride penetration and drying shrinkage around 33.6% and 29.2% respectively at 180 days. Hence, this study declared 10% CBA as optimum that can be used for future research.
  8. Godman B, Haque M, Kumar S, Islam S, Charan J, Akter F, et al.
    Curr Med Res Opin, 2021 09;37(9):1529-1545.
    PMID: 34166174 DOI: 10.1080/03007995.2021.1946024
    INTRODUCTION: Prevalence rates for diabetes mellitus continue to rise, which, coupled with increasing costs of complications, has appreciably increased expenditure in recent years. Poor glycaemic control including hypoglycaemia enhances complication rates and associated morbidity, mortality and costs. Consequently, this needs to be addressed. Whilst the majority of patients with diabetes have type-2 diabetes, a considerable number of patients with diabetes require insulin to help control their diabetes. Long-acting insulin analogues were developed to reduce hypoglycaemia associated with insulin and help improve adherence, which can be a concern. However, their considerably higher costs have impacted on their funding and use, especially in countries with affordability issues. Biosimilars can help reduce the costs of long-acting insulin analogues thereby increasing available choices. However, the availability and use of long-acting insulin analogues can be affected by limited price reductions versus originators and limited demand-side initiatives to encourage their use. Consequently, we wanted to assess current utilisation rates for long-acting insulin analogues, especially biosimilars, and the rationale for patterns seen, across multiple Asian countries ranging from Japan (high-income) to Pakistan (lower-income) to inform future strategies.

    METHODOLOGY: Multiple approaches including assessing utilization and prices of insulins including biosimilars among six Asian countries and comparing the findings especially with other middle-income countries.

    RESULTS: Typically, there was increasing use of long-acting insulin analogues among the selected Asian countries. This was especially the case enhanced by biosimilars in Bangladesh, India, and Malaysia reflecting their perceived benefits. However, there was limited use in Pakistan due to issues of affordability similar to a number of African countries. The high use of biosimilars in Bangladesh, India and Malaysia was helped by issues of affordability and local production. The limited use of biosimilars in Japan and Korea reflects limited price reductions and demand-side initiatives similar to a number of European countries.

    CONCLUSIONS: Increasing use of long-acting insulin analogues across countries is welcomed, adding to the range of insulins available, which increasingly includes biosimilars. A number of activities are needed to enhance the use of long-acting insulin analogue biosimilars in Japan, Korea and Pakistan.

    MeSH terms: Asia; Humans; Insulin; Japan; Pakistan
  9. Lim HM, Ng CJ, Teo CH, Lee PY, Kassim PSJ, Nasharuddin NA, et al.
    PLoS One, 2021;16(6):e0253471.
    PMID: 34166432 DOI: 10.1371/journal.pone.0253471
    BACKGROUND: Engaging students in the e-learning development process enhances the effective implementation of e-learning, however, students' priority on the topics for e-learning may differ from that of the educators. This study aims to compare the differences between the students and their educators in prioritising the topics in three healthcare curricula for reusable e-learning object (RLO) development.

    METHOD: A modified Delphi study was conducted among students and educators from University Malaya (UM), Universiti Putra Malaysia (UPM) and Taylor's University (TU) on three undergraduate programmes. In Round 1, participants were asked to select the topics from the respective syllabi to be developed into RLOs. Priority ranking was determined by using frequencies and proportions. The first quartile of the prioritised topics was included in Round 2 survey, which the participants were asked to rate the level of priority of each topic using a 5-point Likert scale. The mean score of the topics was compared between students and educators.

    RESULT: A total of 43 educators and 377 students participated in this study. For UM and TU Pharmacy, there was a mismatch in the prioritised topics between the students and educators. For UPM, both the educators and students have prioritised the same topics in both rounds. To harmonise the prioritisation of topics between students and educators for UM and TU Pharmacy, the topics with a higher mean score by both the students and educators were prioritised.

    CONCLUSION: The mismatch in prioritised topics between students and educators uncovered factors that might influence the prioritisation process. This study highlighted the importance of conducting needs assessment at the beginning of eLearning resources development.

    MeSH terms: Computer-Assisted Instruction*; Delivery of Health Care*; Delphi Technique; Education, Medical*; Female; Humans; Learning*; Malaysia; Male; Students, Medical*
  10. Oresegun A, Tarif ZH, Ghassan L, Zin H, Abdul-Rashid HA, Bradley DA
    Appl Radiat Isot, 2021 Oct;176:109812.
    PMID: 34166948 DOI: 10.1016/j.apradiso.2021.109812
    Investigation has been made of the radioluminescence dose response of Ge-doped silica flat and cylindrical fibers subjected to 6 and 10 MV photon beams. The fibers have been custom fabricated, obtaining Ge dopant concentrations of 6 and 10 mol%, subsequently cut into 20 mm lengths. Each sample has been exposed under a set of similar conditions, with use made of a fixed field size and source to surface distance (SSD). Investigation of dosimetric performance has involved radioluminescence linearity, dose-rate dependence, energy dependence, and reproducibility. Mass for mass, the 6 mol% Ge-doped samples provided the greater radioluminescence yield, with both flat and cylindrical fibers responding linearly to the absorbed dose. Further found has been that the cylindrical fibers provided a yield some 38% greater than that of the flat fibers. At 6 MV, the cylindrical fibers were also found to exhibit repeatability variation of <1%, superior to that of the flat fibers, offering strong potential for use in real-time dosimetry applications.
    MeSH terms: Radiometry/methods*; Silicon Dioxide/chemistry*; Reproducibility of Results; Geranium/chemistry*; Luminescence; Optical Fibers*
  11. Fatin Afiqah Azhar
    Borneo Akademika, 2021;5(1):52-59.
    MyJurnal
    Rodents are the world’s largest group of small mammals with more than 2200 living species, comprising around 40 percent of all small mammal species existing today. Rodents are non-volant small mammals that weigh approximately less than 500g and inhabit various types of habitat such as grasslands, desert and even in human settlements. This review explained the roles, threats and distribution of rodents in the ecosystem they inhabit. Some species play critical roles as seed disperser, pollinator and even as laboratory subjects in many experiments. This article serves as an eye-opener about the rodent status distribution and abundance in natural and modified habitat, especially in Malaysia. This review of literature can provide knowledge to people to know more about rodents.
  12. Melati Desa, Noraziah Mohd Amin, Mah, Boon Yih, Raja Rosila Raja Berahi, Noor Azli Affendy Lee, Nur Afiqah Ab. Latif, et al.
    Borneo Akademika, 2021;5(1):41-51.
    MyJurnal
  13. Lo CH, Rosslund A, Chai JH, Mayor J, Kartushina N
    Infancy, 2021 07;26(4):596-616.
    PMID: 33813801 DOI: 10.1111/infa.12401
    The present study explores the viability of using tablets in assessing early word comprehension by means of a two-alternative forced-choice task. Forty-nine 18-20-month-old Norwegian toddlers performed a touch-based word recognition task, in which they were prompted to identify the labeled target out of two displayed items on a touchscreen tablet. In each trial, the distractor item was either semantically related (e.g., dog-cat) or unrelated (e.g., dog-airplane) to the target. Our results show that toddlers as young as 18 months can engage meaningfully with a tablet-based assessment, with minimal verbal instruction and child-administrator interaction. Toddlers performed better in the semantically unrelated condition than in the related condition, suggesting that their word representations are still semantically coarse at this age. Furthermore, parental reports of comprehension, using the Norwegian version of the MacArthur-Bates Communicative Development Inventories, predicted toddlers' performance, with parent-child agreement stronger in the semantically unrelated condition, indicating that parents declare a word to be known by their child if it is understood at a coarse representational level. This study provides among the earliest evidence that remote data collection in 18-20 month-old toddlers is viable, as comparable results were observed from both in-laboratory and online administration of the touchscreen recognition task.
    MeSH terms: Female; Humans; Infant; Language Development*; Language Tests; Male; Vocabulary*; Comprehension*
  14. Yana J, Chiangraeng N, Nimmanpipug P, Lee VS
    J Mol Graph Model, 2021 09;107:107946.
    PMID: 34119952 DOI: 10.1016/j.jmgm.2021.107946
    Conformational search for the most stable geometry connection of 16 sets of polydopamine (PDA) tetramer subunits has been systematically investigated using density functional theory (DFT) calculations. Our results indicated that the more planar subunits are, the more stable they are. This finding is in good agreement with recent experimental observations, which have suggested that PDA are composed of the nearly planar subunits that appear to be stacked together via the π-π interactions to form graphite-like layered aggregates associated with the balance of the intramolecular hydrogen bonds and steric effects from the indole and catechol moieties. Molecular dynamics (MD) simulations of 16 spherical clusters of the tetramer subunits of PDA in the gas and aqueous phase were performed at 298 K and confirmed the stability of supramolecular tetramer aggregates. The complex formation and binding energy of all 16 clusters are very strong although the shapes of the clusters in aqueous solution are not spherical and are very much different from those in the gas phase. The aggregations of all 16 clusters in aqueous solution were also confirmed from the profiles of the Kratky plot and the radius of gyration of all clusters. Our MD results in both gas phase and aqueous solution pointed out that there are high possibilities of aggregations of the 16 kinds of tetramer subunits although the conformations of each tetramer subunit are not flat. In summary, this work brings an insight into the controversial structure of PDA tetramer units and explains some of the important structural features found in the aqueous phase in comparison to the gas phase.
    MeSH terms: Hydrogen Bonding; Indoles; Polymers*; Molecular Dynamics Simulation*
  15. Khan MK, Abbas F, Godil DI, Sharif A, Ahmed Z, Anser MK
    Environ Sci Pollut Res Int, 2021 Oct;28(39):55579-55591.
    PMID: 34138439 DOI: 10.1007/s11356-021-14686-9
    Without enhancing the quality of the environment, the goals of sustainable development remain unachievable. In order to minimize the damage to the planet, sustainable practices need to be considered. This study is conducted to identify some of the drivers behind the increasing sustainability issues and tried to investigate the impact of natural resources, financial development, and economic growth on the ecological footprint in Malaysia from the year 1980-2019 by utilizing the dynamic simulated autoregressive distribution lag approach. It was identified that financial development, economic growth, and natural resources are the determinants behind the upsurge of the ecological footprint as all three show a positive and significant effect on ecological footprint. However, in the long run, the presence of the Environmental Kuznets Curve hypothesis was also validated in Malaysia. Therefore, it is recommended to increase awareness among the public regarding the adoption of sustainable practices in everyday life and to use green technologies that offer maximum efficiency and minimum damage to the environment in commercial and domestic activities. Finally, based on the research results, a comprehensive policy framework was proposed which could allow the Malaysian economy to attain the objectives of Sustainable Development Goals (SDGs) 7, 8, and 13.
    MeSH terms: Natural Resources; Malaysia; Economic Development*; Policy
  16. Yong SJ
    Med Hypotheses, 2021 Aug;153:110628.
    PMID: 34139599 DOI: 10.1016/j.mehy.2021.110628
    Presently, it remains unclear why the prevalence of lung diseases, namely chronic obstructive pulmonary disease (COPD), is much lower than other medical comorbidities and the general population among patients with coronavirus disease 2019 (COVID-19). If COVID-19 is a respiratory disease, why is COPD not the leading risk factor for contracting COVID-19? The same odd phenomenon was also observed with other pathogenic human coronaviruses causing severe acute respiratory distress syndrome (SARS) and Middle East respiratory syndrome (MERS), but not other respiratory viral infections such as influenza and respiratory syncytial viruses. One commonly proposed reason for the low COPD rates among COVID-19 patients is the usage of inhaled corticosteroids or bronchodilators that may protect against COVID-19. However, another possible reason not discussed elsewhere is that lungs in a diseased state may not be conducive for the severe acute respiratory distress syndrome coronavirus 2 (SARS-CoV-2) to establish COVID-19. For one, COPD causes mucous plugging in large and small airways, which may hinder SARS-CoV-2 from reaching deeper parts of the lungs (i.e., alveoli). Thus, SARS-CoV-2 may only localize to the upper respiratory tract of persons with COPD, causing mild or asymptomatic infections requiring no hospital attention. Even if SARS-CoV-2 reaches the alveoli, cells therein are probably under a heavy burden of endoplasmic reticulum (ER) stress and extensively damaged where it may not support efficient viral replication. As a result, limited SARS-CoV-2 virions would be produced in diseased lungs, preventing the development of COVID-19.
    MeSH terms: Humans; Lung; Prevalence
  17. Sreedharan Nair R, Rahman H, Kong MX, Tan XY, Chen KY, Shanmugham S
    Turk J Pharm Sci, 2021 06 18;18(3):352-359.
    PMID: 34157826 DOI: 10.4274/tjps.galenos.2020.88725
    Objectives: N,N-Diethyl-3-methylbenzamide (DEET) is a broad-spectrum insect repellent that can easily permeate through the skin and can cause undesirable effects, especially in children and pregnant women. The objective of this research was to formulate and evaluate DEET-encapsulated microparticles containing a hydrogel designed to reduce skin permeation and prolong drug release.

    Materials and Methods: The formulation design was based on the independent formulation variables of the concentration of chitosan and sodium tripolyphosphate using a simple factorial design experiment. DEET-loaded microparticles were developed and incorporated into a hydrogel. The size of the microparticles was analyzed using the Zetasizer Nano® particle size analyzer, and the surface morphology, using field emission scanning electron microscopy. Drug release from the microparticles was determined by the dialysis bag method. A rheological evaluation of the formulated gel was performed using a Thermo Haake Rheometer. The in vitro permeation of the formulation was performed using a synthetic Strat-M® membrane.

    Results: The size of the microparticles ranged from 0.45 to 8.3 μm, and the encapsulation efficiencies were >50% for all the formulations. The drug-release curves showed no initial burst release from the microparticle formulation. Instead, a slow and controlled drug release was observed over 24 hours that followed Higuchi kinetics. The cumulative amount of DEET permeated (over 24 h) from the DEET solution (control), and the formulation was 211.6±19.5 μg/cm2 and 4.07±0.08 μg/cm2, respectively.

    Conclusion: A significantly low DEET permeation from the microparticle formulations indicated minimal absorption of the drug into the body and thus, reduced systemic toxicity. Thixotropic evaluation of the hydrogel formulation demonstrated a hysteresis loop that fitted closely to the Herschel-Bulkley rheological model, ensuring an effortless application and prolonged retention on the skin. Hence, it can be concluded that the developed formulation is an effective delivery approach for controlled insect repellent activity with reduced skin absorption.

  18. Salim H, Shariff Ghazali S, Lee PY, Cheong AT, Harrun NH, Mohamed Isa S, et al.
    BMC Public Health, 2021 06 22;21(1):1186.
    PMID: 34158013 DOI: 10.1186/s12889-021-11194-w
    BACKGROUND: Limited health literacy among people with asthma is associated with poor adherence to self-management activities, thus poor clinical outcomes. This study aimed to determine the prevalence of health literacy level and its determinants among people with asthma in the Malaysian primary healthcare settings.

    METHOD: A cross-sectional study was conducted among participants aged > 18 years with asthma who attended five primary health clinics in Malaysia. Systematic random sampling was employed with a final sample of 550 participants. The questionnaires included the validated Malay version of Health Literacy Scale (HLS) and asthma control questionnaire (ACQ). Statistical analysis was done using SPSS version 25. Multiple logistic regression was performed to determine the determinants for limited health literacy.

    RESULTS: The participants mean age of the participants was 48 (SD15.4) years. Most of the participants were women (64%) and of Malay ethnicity (51.1%). Nearly half had a secondary level of education, n = 112, (45.8%). Mean duration of asthma diagnosis is 20.6 (SD 15.9) years. More than half (62.5%) had a family history of asthma. About half (50.9%) had uncontrolled asthma, with 87.3% self-rated themselves as having controlled asthma. About a third (29.1%) received education on of asthma action plan, but only 7.1% of these owned a written version an asthma action plan. Limited health literacy accounts for 60.5% of the participants. The significant determinants for limited health literacy included lower educational attainment (p 

    MeSH terms: Adolescent; Cross-Sectional Studies; Female; Humans; Malaysia/epidemiology; Primary Health Care; Surveys and Questionnaires; Health Literacy*
  19. Mohd Ramli SS, Husain S, Wong YP
    BMJ Case Rep, 2021 Jun 22;14(6).
    PMID: 34158320 DOI: 10.1136/bcr-2020-236436
    A 39-year-old man presented with bilateral nasal obstruction for 4 months and associated with hyposmia and foul-smelling nasal discharge. Nasal endoscopy showed irregular mucosa of the nasal cavity with easily bleeding. Nasal biopsy reported as extranodal Natural Killer/T cell lymphoma, nasal type. In-situ hybridisation for Epstein-Barr encoding region was positive. He was treated with six cycles of gemcitabine, oxaliplatin and L-asparaginase and peripheral blood stem cell transplant. After the treatment, he was asymptomatic until 9 months where he had splenic abscess and undergone splenectomy. He was asymptomatic of the disease for 2 years.
    MeSH terms: Adult; Biopsy; Humans; Male; Nasal Cavity; Splenic Diseases*; Natural Killer T-Cells*
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