Browse publications by year: 2019

  1. Akbari A, Mohammadian E, Alavi Fazel SA, Shanbedi M, Bahreini M, Heidari M, et al.
    ACS Omega, 2019 Apr 30;4(4):7038-7046.
    PMID: 31459815 DOI: 10.1021/acsomega.9b00176
    Many studies have investigated natural convection heat transfer from the outside surface of horizontal and vertical cylinders in both constant heat flux and temperature conditions. However, there are poor studies in natural convection from inclined cylinders. In this study, free convection heat transfer was examined experimentally from the outside surface of a cylinder for glycerol and water at various heat fluxes. The tests were performed at 10 different inclination angles of the cylinder, namely, φ = 0°, 10°, 20°, 30°, 40°, 50°, 60°, 70°, 80°, and 90°, measured from the horizon. Our results indicated that the average Nusselt number reduces with the growth in the inclination of the cylinder to the horizon at the same heat flux, and the average Nusselt number enhanced with the growth in heat flux at the same angle. Also, the average Nusselt number of water is greater than that of glycerol. A new experimental model for predicting the average Nusselt number is suggested, which has a satisfactory accuracy for experimental data.
    MeSH terms: Biological Phenomena; Glycerol; Hot Temperature; Models, Theoretical; Temperature; Water; Convection; Physical Phenomena
  2. Maki MAA, Kumar PV, Cheah SC, Siew Wei Y, Al-Nema M, Bayazeid O, et al.
    ACS Omega, 2019 May 31;4(5):8767-8777.
    PMID: 31459966 DOI: 10.1021/acsomega.9b00109
    Several studies have shown that the mammalian target of rapamycin (mTOR) inhibitor; everolimus (EV) improves patient survival in several types of cancer. However, the meaningful efficacy of EV as a single agent for the treatment of colorectal cancer (CRC) has failed to be proven in multiple clinical trials. Combination therapy is one of the options that could increase the efficacy and decrease the toxicity of the anticancer therapy. This study revealed that the β-cyclodextrin (β-CD):FGF7 complex has the potential to improve the antiproliferative effect of EV by preventing FGF receptor activation and by enhancing EV cellular uptake and intracellular retention. Molecular docking techniques were used to investigate the possible interaction between EV, β-CD, and FGF7. Molecular docking insights revealed that β-CD and EV are capable to form a stable inclusion complex with FGF at the molecular level. The aqueous solubility of the inclusion complex was increased (3.1 ± 0.23 μM) when compared to the aqueous solubility of pure EV (1.7 ± 0.16 μM). In addition, the in vitro cytotoxic activity of a FGF7:β-CD:EV complex on Caco-2 cell line was investigated using real-time xCELLigence technology. The FGF7:β-CD:EV complex has induced apoptosis of Caco-2 cells and shown higher cytotoxic activity than the parent drug EV. With the multitargets effect of β-CD:FGF7 and EV, the antiproliferative effect of EV was remarkably improved as the IC50 value of EV was reduced from 9.65 ± 1.42 to 1.87 ± 0.33 μM when compared to FGF7:β-CD:EV complex activity. In conclusion, the findings advance the understanding of the biological combinational effects of the β-CD:FGF7 complex and EV as an effective treatment to combat CRC.
    MeSH terms: Everolimus; Animals; Colonic Neoplasms; Combined Modality Therapy; Humans; Solubility; Colorectal Neoplasms; Treatment Outcome; Apoptosis; Receptors, Fibroblast Growth Factor; Caco-2 Cells; Inhibitory Concentration 50; beta-Cyclodextrins; Molecular Docking Simulation
  3. Ravishankar D, Albadawi DAI, Chaggar V, Patra PH, Williams HF, Salamah M, et al.
    Eur J Pharmacol, 2019 Nov 05;862:172627.
    PMID: 31461638 DOI: 10.1016/j.ejphar.2019.172627
    Isorhapontigenin is a polyphenolic compound found in Chinese herbs and grapes. It is a methoxylated analogue of a stilbenoid, resveratrol, which is well-known for its various beneficial effects including anti-platelet activity. Isorhapontigenin possesses greater oral bioavailability than resveratrol and has also been identified to possess anti-cancer and anti-inflammatory properties. However, its effects on platelet function have not been reported previously. In this study, we report the effects of isorhapontigenin on the modulation of platelet function. Isorhapontigenin was found to selectively inhibit ADP-induced platelet aggregation with an IC50 of 1.85 μM although it displayed marginal inhibition on platelet aggregation induced by other platelet agonists at 100 μM. However, resveratrol exhibited weaker inhibition on ADP-induced platelet aggregation (IC50 > 100 μM) but inhibited collagen induced platelet aggregation at 50 μM and 100 μM. Isorhapontigenin also inhibited integrin αIIbβ3 mediated inside-out and outside-in signalling and dense granule secretion in ADP-induced platelet activation but interestingly, no effect was observed on α-granule secretion. Isorhapontigenin did not exert any cytotoxicity on platelets at the concentrations of up to 100 μM. Furthermore, it did not affect haemostasis in mice at the IC50 concentration (1.85 μM). In addition, the mechanistic studies demonstrated that isorhapontigenin increased cAMP levels and VASP phosphorylation at Ser157 and decreased Akt phosphorylation. This suggests that isorhapontigenin may interfere with cAMP and PI3K signalling pathways that are associated with the P2Y12 receptor. Molecular docking studies emphasised that isorhapontigenin has greater binding affinity to P2Y12 receptor than resveratrol. Our results demonstrate that isorhapontigenin has selective inhibitory effects on ADP-stimulated platelet activation possibly via P2Y12 receptor.
    MeSH terms: Adenosine Diphosphate/pharmacology; Animals; Blood Platelets/drug effects*; Blood Platelets/metabolism; Drug Evaluation, Preclinical; Female; Humans; Male; Platelet Aggregation/drug effects*; Platelet Aggregation Inhibitors/pharmacology*; Platelet Aggregation Inhibitors/therapeutic use; Platelet Function Tests; Stilbenes/pharmacology*; Stilbenes/therapeutic use; Stilbenes/chemistry; Thrombosis/drug therapy; Signal Transduction/drug effects; Platelet Glycoprotein GPIIb-IIIa Complex/antagonists & inhibitors; Platelet Glycoprotein GPIIb-IIIa Complex/metabolism; Inhibitory Concentration 50; Models, Animal; Mice; Receptors, Purinergic P2Y12/metabolism; Receptors, Purinergic P2Y12/chemistry; Molecular Docking Simulation; Healthy Volunteers
  4. Abdulrahman SA, Ganasegeran K, Rampal L, Martins OF
    AIDS Rev, 2019 Aug 06;21(3):157-159.
    PMID: 31386650
    Non-adherence remains a significant barrier to achieving successful HIV treatment outcomes. This review aimed to holistically examine the concept of adherence in the light of current research evidence and to provide a basic and adaptable conceptual framework for investigating and influencing adherence behavior among various HIV populations. We reviewed published journal articles and gray literature within the period from 2000 to 2017. A comprehensive search from major online databases and repositories such as PubMed, Scopus, Medline, Google Scholar, and Cochrane Database of Systematic Reviews was conducted using focused search terms that included "social cognition models" or "theories and models of health behavior change" or "behavior change in health psychology" or "theory-based interventions" or "behavioral frameworks" and "adherence behavior" or "medication adherence," and "HIV patients" or "HIV/AIDS." Only papers published in English were included in this study. We found varied and extensive literature evidence supporting the use of psychobehavioral models to promote conceptual understanding of adherence behavior among HIV-positive patients globally. We observed that certain approaches at investigating nonadherence worked better among certain populations and epidemics than others, largely because of contextual differences in barriers and burden of non-adherence among these populations. We synthesized the evidence and applied social cognition models in explaining and providing a basic, evidence-based and adaptable conceptual framework for investigating and influencing adherence behavior among HIV-positive populations around the world, regardless of geographical and HIV epidemiological context.
  5. Aung YN, Nur AM, Ismail A, Aljunid SM
    Clinicoecon Outcomes Res, 2019;11:505-513.
    PMID: 31447570 DOI: 10.2147/CEOR.S209108
    Purpose: Care at ICUs is expensive and variable depending on the type of care that the patients received. Knowing the characteristics of the patient and his or her disease is always useful for improving health services and cost containment.

    Patients and methods: An observational study was conducted at four different intensive care units of an academic medical institution. Demographic characteristics, disease-management casemix information, cost and outcome of the high costing decile, and the rest of the cases were compared.

    Results: A total of 3,220 discharges were included in the study. The high-cost group contributed 35.4% of the ICU stays and 38.8% of the total ICU expenditure. Diseases of the central nervous system had higher odds to be in the top decile of costly patients whereas the cardiovascular system was more likely to be in the non-high cost category. The high-cost patients were more likely to have death as an outcome (19.2% vs 9.3%; p<0.001). The most common conditions that were in the high-cost groups were craniotomy, other ear, nose, mouth, and throat operations, simple respiratory system operations, complex intestinal operations, and septicemia. These five diagnostic groups made up 43% of the high-cost decile.

    Conclusion: High-cost patients utilized almost 40% of the ICU cost although they were only 10% of the ICU patients. The chances of admission to the ICU increased with older age and severity level of the disease. Central nervous system diseases were the major problem of patients aged 46-69 years old. In addition to cost reduction strategies at the treatment level, detailed analysis of these cases was needed to explore and identify pre-event stage prevention strategies.

    MeSH terms: Cardiovascular System; Central Nervous System Diseases; Cost Control; Craniotomy; Demography; Diagnosis-Related Groups; Health Expenditures; Female; Glycogen Storage Disease Type VI; Humans; Intensive Care Units; Mouth; Nose; Pharynx; Sepsis
  6. Ismail SB, Hassan R, Baharuddin KA, Sulaiman AR, Jaalam K, Wan Hitam WH, et al.
    Malays J Med Sci, 2019 Mar;26(2):1-7.
    PMID: 31447603 DOI: 10.21315/mjms2019.26.2.1
    The School of Medical Sciences of Universiti Sains Malaysia (USM) is the launching pad for this journal. From the school's humble beginning at the USM Main Campus in Pulau Pinang, Malaysia, it has grown in stature at its current location in the USM Health Campus, Kubang Kerian, Kelantan, Malaysia. Commemorating its 40th anniversary, this editorial aims to recollect, although not exhaustively, the wealth of returns for the USM, as well as for the nation, which the school has managed to deliver in that period. Resolute to its vision and mission, this article highlights the outstanding accomplishments in various core aspects of the school's academic, research and professional growth as we continually strive to train globally competitive and compassionate medical graduates, medical specialists and scientists, skilled to serve nation's needs and broader markets worldwide. Currently guided by the Malaysian Higher Education Blueprint (2015-2025), the school shall remain ingenious in its duties in the many more years to come, as we head for a world-class trajectory.
    MeSH terms: Anniversaries and Special Events; Body Height; Humans; Malaysia; Medicine; Research; Schools; Specialization
  7. Doaei S, Gholamalizadeh M, Akbari ME, Akbari S, Feradova H, Rahimzadeh G, et al.
    Malays J Med Sci, 2019 Mar;26(2):8-17.
    PMID: 31447604 DOI: 10.21315/mjms2019.26.2.2
    Cancer cells are mainly dependent on glycolysis for their growth and survival. Dietary carbohydrates play a critical role in the growth and proliferation of cancer and a low-carbohydrate diet may help slow down the growth of tumours. However, the exact mechanisms behind this effect are unclear. This review study aimed to investigate the effect of fat mass and obesity-associated (FTO) gene in the association between dietary carbohydrates and cancer. This study was carried out using keywords such as polymorphism and/or cancer and/or dietary carbohydrate and/or FTO gene. PubMed and Science Direct databases were used to collect all related articles published from 1990 to 2018. Recent studies showed that the level of FTO gene expression in cancer cells is dramatically increased and may play a role in the growth of these cells through the regulation of the cellular metabolic pathways, including the phosphoinositide 3-kinases/protein kinaseB (PI3K/AKT) signaling pathway. Dietary carbohydrate may influence the FTO gene expression by eliminating the inhibitory effect of adenosine monophosphate-activated protein kinase (AMPK) on the FTO gene expression. This review summarised what has been recently discovered about the effects of dietary carbohydrate on cancer cells and tried to determine the mediating role of the FTO gene in these effects.
    MeSH terms: Adenosine Monophosphate; Dietary Carbohydrates; Glycolysis; Neoplasms; Obesity; Phosphatidylinositols; Polymorphism, Genetic; Signal Transduction; Phosphatidylinositol 3-Kinases; PubMed; Cell Proliferation; Diet, Carbohydrate-Restricted; Proto-Oncogene Proteins c-akt
  8. Goh KL
    Malays J Med Sci, 2019 Mar;26(2):18-29.
    PMID: 31447605 DOI: 10.21315/mjms2019.26.2.3
    The landscape of liver diseases in Malaysia has changed dramatically since the time of Professor Balasegaram Manickavasagar-an eminent surgeon in the 1960s. The most significant discoveries in hepatology have been that of hepatitis B virus in 1963 and hepatitis C virus in 1989, which have both been shown to be predominantly blood borne diseases. Hepatitis B and C infections result in long term carrier state and a high propensity to develop liver cirrhosis and cancer. Hepatitis B is the most common cause of liver cirrhosis and cancer in Malaysia. Blood bank screening and public health preventive measures have reduced the disease burden significantly and an effective vaccination for hepatitis B is now incorporated in our National Immunisation Programme. Although no vaccine is available for hepatitis C, highly effective eradication therapies were introduced in 2011. These agents will significantly change the disease scenario across the world. A "new" disease was described in 1980, by Ludwig et al.-non-alcoholic fatty liver (NAFLD) disease. With the global epidemic of obesity and diabetes mellitus, NAFLD is set to increase exponentially across the world including in Malaysia. It will be the most important liver disease in the future, replacing hepatitis B and C infections.
    MeSH terms: Blood Banks; Carrier State; Diabetes Mellitus; Gastroenterology; Hepatitis B; Hepatitis B virus; Hepatitis C; Liver Cirrhosis; Malaysia; Neoplasms; Obesity; Public Health; Vaccination; Hepacivirus; Immunization Programs; Non-alcoholic Fatty Liver Disease; Surgeons
  9. Ahmad F, Seerangan P, Mustafa MZ, Osman ZF, Abdullah JM, Idris Z
    Malays J Med Sci, 2019 Mar;26(2):30-39.
    PMID: 31447606 MyJurnal DOI: 10.21315/mjms2019.26.2.4
    Background: There has been increasing evidence showing that stingless bee honey exhibits anti-oxidant, anti-inflammatory and anti-cancer properties. Pharmacologically-active components in honey such as flavonoids and phenolic constituents are known to contribute to its medicinal benefits. To the best of our knowledge, this is the first study on evaluating anti-cancer effects of locally-produced Malaysian stingless bee honey from Heterotrigona itama sp. on malignant glioma cells.

    Methods: Proliferation and apoptosis studies of U-87 MG cells following stingless bee honey treatment were carried out using MTS assay and acridine orange/propidium iodide dual staining, respectively.

    Results: Results demonstrated time and dose-dependent cytotoxicity using 0.625%, 1.25% and 10% stingless bee honey (P < 0.05). IC50 values were calculated using cells treated with 10% stingless bee honey. It was also observed that 10% stingless bee honey induced nuclear shrinkage, chromatin condensation and nucleus fragmentation, indicating that cellular changes were consistent with the apoptotic characteristics of the cells.

    Conclusion: These data provide a good basis for further evaluation of the medicinal properties of stingless bee honey from Heterotrigona itama sp. This source of honey may serve as a potential therapy for malignant glioma.

    MeSH terms: Acridine Orange; Animals; Anti-Inflammatory Agents; Bees; Flavonoids; Glioma; Heterochromatin; Honey; Phenols; Propidium; Staining and Labeling; Oxidants; Apoptosis; Inhibitory Concentration 50; Cell Proliferation
  10. Shahidi S, Hashemi-Firouzi N, Afshar S, Asl SS, Komaki A
    Malays J Med Sci, 2019 Mar;26(2):40-51.
    PMID: 31447607 DOI: 10.21315/mjms2019.26.2.5
    INTRODUCTION: Intracerebroventricular administration of streptozotocin (icv-STZ) induced apoptosis changes in neurons similar to Alzheimer's disease. The serotonergic system via its receptor involved in survival of neurons. The present study examined the ability of selective 5-HT1A receptor antagonist (NAD-299) and 5-HT2A receptor agonist (TCB-2) to attenuate the apoptosis caused by the icv-STZ in the rat.

    METHODS: The icv-STZ (3 mg/kg, 10 μL, twice) induced neuronal loss in the hippocampus of adult male rats. Animals were divided into naive control, sham-operated, STZ+saline (1 μL, icv), STZ+NAD-299 (5 μg/μL, icv), STZ+TCB-2 (5 μg/μL, icv), and STZ+NAD-299+TCB-2 (5 μg/μL of any agent, icv) groups. Following the 35 days' treatment period, neuronal apoptosis was detected using the Tunnel. Cells with morphological features of apoptotic cell were contended by microscopy.

    RESULTS: TCB-2 and NAD-299 administration decreased number of apoptotic neurons in the treatment group compared with the STZ group. Combined treatment of STZ rat with NAD+TCB more decreased number of apoptotic cells in compare to TCB-2 or NAD-299 treated STZ groups.

    CONCLUSION: Treatment with 5-HT1A receptor antagonist or 5-HT2A receptor agonist diminished apoptosis. The beneficial effect of 5HT1A receptor inhibition was potentiated with activation of 5-HT2A receptor in prevention of apoptosis in hippocampus.

  11. Agha-Rahimi A, Omidi M, Akyash F, Faramarzi A, Farshchi FA
    Malays J Med Sci, 2019 Mar;26(2):52-58.
    PMID: 31447608 DOI: 10.21315/mjms2019.26.2.6
    Background: Vitrification is a routine procedure in assisted reproductive technique (ART) lab. However, there is widespread variability between protocols of different centres. The aim of this study was to compare the chemical pregnancy, clinical pregnancy and live birth rates between one-day embryo culture and immediate transfer for frozen-thawed embryo transfer (FET) cycles.

    Methods: In this cohort retrospective study, 366 FET cycles were divided into two groups: Group A, the embryos were warmed one day before transfer, and were cultured overnight; Group B, the embryos were warmed on the same day of transfer, at least were cultured 1 h before embryo transfer (ET). Chemical and clinical pregnancy and live birth rates were compared between two groups.

    Results: The chemical pregnancy was higher in group A than B (37.9% versus 28.9%), but this difference was not significant (P = 0.07). Clinical pregnancy (30.8% versus 24.1%) and live birth (19.8% versus 22.05%) were similar in group A and B, (P = 0.15), and (P = 0.8). Conclusion: In conclusion, overnight culture and confirmation of mitosis resumption was not essential for FET cycles in vitrification method.

    MeSH terms: Abortion, Spontaneous; Birth Rate; Embryo Transfer; Female; Humans; Mitosis; Pregnancy; Pregnancy Outcome; Retrospective Studies; Reproductive Techniques, Assisted; Live Birth; Vitrification
  12. Sungkar T, Rozi MF, Dairi LB, Zain LH
    Malays J Med Sci, 2019 Mar;26(2):59-65.
    PMID: 31447609 DOI: 10.21315/mjms2019.26.2.7
    Background: Liver cirrhosis and the child-Turcotte-Pugh (CTP) score are inseparable entities in liver disease. CTP score is largely known as the mortality and prognosis predictor. Nevertheless, ferritin emerges as a simple biomarker related to prognosis. The study aimed to determine whether there was a significant correlation between serum ferritin levels and CTP score.

    Methods: The study analysed 54 decompensated liver cirrhotic patients including 17 females and 37 males between May 2016 and May 2017 at the Haji Adam Malik General Hospital, Medan, Indonesia. Ferritin levels were, then, divided into trichotomous cut-off value (< 200 ng/mL, n = 22; 200-400 ng/mL, n = 5; and > 400 ng/mL, n = 27). Data was analysed using SPSS version 12.0 (continuous variables were assessed by the Kruskal-Wallis test and Chi-square test was used for categorical variables). In addition, Spearman correlation test was used to determine any significant correlation between ferritin levels and CTP score.

    Results: Based on data analysis, gender and CTP score were related to higher ferritin levels (P = 0.002 and P = 0.018, respectively). Furthermore, a significant correlation between serum ferritin levels and CTP score was obtained in to moderate degree (P = 0.000; r = 0.487).

    Conclusions: There might be a significant role of serum ferritin levels in predicting mortality and prognosis among decompensated liver cirrhosis patients but it still needs further attention.

    MeSH terms: Attention; Child; Female; Ferritins; Hospitals, General; Humans; Indonesia; Liver Cirrhosis; Liver Diseases; Male; Prognosis; Biomarkers; Liver Failure
  13. Prasetyono TOH, Adhistana P
    Malays J Med Sci, 2019 Mar;26(2):66-76.
    PMID: 31447610 DOI: 10.21315/mjms2019.26.2.8
    Background: This study aimed to measure the least initial and maintenance forces of syringe and needle combinations to provide a reference for local anesthetic injection.

    Methods: An experimental study was conducted in our Physics Laboratory during September 2015. A series of syringes sized 1 mL, 3 mL, 5 mL, 10 mL and 20 mL were paired with the original needles, 27G, 27G spinal and 30G. Each combination was tested three times using a compression testing Instron 5940 Series to measure initial and maintenance forces. Statistical analysis was performed using One-way ANOVA.

    Results: The lowest initial force was shown by the combination of 1 mL syringe and 27G spinal needle. However, the 1 mL syringe showed no significant difference across the needles [F(3, 8) = 3.545; P < 0.068]. The original and 27G needle showed mean difference 0.28 (95%CI: -0.19, 0.75; P = 0.420). The lowest maintenance force was measured in the combination of 1 mL syringe and its original 26G needle. On the contrary, both the highest initial and maintenance forces were shown by the combination of 10 mL syringe and 30G needle.

    Conclusion: The 1 mL syringe with original 26G needle shows the best combination.

    MeSH terms: Analysis of Variance; Anesthesia, Local; Anesthetics, Local; Injections; Maintenance; Needles; Physics; Syringes; Physical Phenomena
  14. Wahab IA, Akbar B, Zainal ZA, Che Pa MF, Naina B
    Malays J Med Sci, 2019 Mar;26(2):77-87.
    PMID: 31447611 MyJurnal DOI: 10.21315/mjms2019.26.2.9
    Background: Studies have shown that the use of medicines with anti-cholinergic (Ach) properties can increase elderly patients' risk of experiencing falls, confusion, and longer hospital stays (LOS). These adverse effects are preventable with appropriate intervention. Little is known about the use of medicines with Ach properties and their impact on Malaysian elderly patients. This study aimed to investigate the use of medicines with Ach properties and their impact on fall risk, confusion, and longer LOS among hospitalised elderly patients.

    Methods: This study utilised a cross-sectional design and was conducted at a single centre where convenience sampling was employed to collect data from elderly patients (> 60 years) admitted to geriatric and medical wards at Hospital Tuanku Ja'afar during a 2-month period (July 2017-August 2017). Patients were excluded from this study if their hospital admission was planned for an elective procedure or if neurocognitive and hepatic impairment were diagnosed prior to the hospital admission. Medicines with Ach properties were identified and classified according to the anti-cholinergic drug scale (ADS). Univariate and multiple logistic regression statistical analyses were performed to assess its impacts on falls, confusion, and LOS.

    Results: A total of 145 elderly patients with a mean age of 71.59 years old (SD = 8.02) were included in the study. Fifty-two percent of the participants were female, and the average hospital stay was 6 days (SD = 2.09). Medicines with Ach properties were administered in 62% (n = 90) of the cases. The most commonly prescribed medicine with Ach properties was furosemide (n = 59), followed by ranitidine (n = 44), warfarin (n = 23), and methylprednisolone (n = 22). Compared to patients who did not receive medicines with Ach properties, patients who received them had a significantly higher risk of falls [odds ratios (OR) = 2.61; 95%CI: 1.18, 5.78; P = 0.018], confusion (OR = 3.60; 95%CI: 1.55, 8.36; P = 0.003), and LOS (OR = 4.83; 95%CI: 2.13, 10.94; P < 0.001). Multiple comorbidities also showed a significantly increased risk of falls (OR = 3.03; 95%CI: 1.29, 7.07; P = 0.010).

    Conclusion: Medicines with Ach properties had a significant impact on elderly patients' health. Strategies for rationally prescribing medicines with Ach properties to Malaysian elderly patients need to be improved and be recognised as an important public health priority.

    MeSH terms: Accidental Falls; Aged; Confusion; Cross-Sectional Studies; Female; Furosemide; Health Priorities; Hospitalization; Humans; Length of Stay; Methylprednisolone; Ranitidine; Warfarin; Comorbidity; Logistic Models; Odds Ratio; Cholinergic Antagonists
  15. Ab Latif R, Mat Nor MZ
    Malays J Med Sci, 2019 Mar;26(2):88-98.
    PMID: 31447612 MyJurnal DOI: 10.21315/mjms2019.26.2.10
    Introduction: Consistent with the significant of the stress issue in education, this study aimed to survey type of stressors and identifies the coping strategies used by diploma nursing students during clinical practices.

    Methods: A descriptive cross-sectional study was carried out at the Kubang Kerian Nursing College, Kelantan which involved 346 respondents using simple random sampling method. The inclusion criteria were year one, two and three of nursing students who have clinical posting and voluntarily joining the study. Perceived Stress Scale (PSS) and Brief COPE inventory were utilised in the data collection. Higher mean score indicates higher degree of stress.

    Results: Clinical assignments and workload were the main stressor (mean = 3.19, SD = 1.09). Religion approach was the most coping strategy applied (mean = 3.30, SD = 0.71). Pearson's correlation coefficient test found that six domains of stressors during clinical practices (taking care of patients; clinical educators/instructors and ward staff; clinical assignments and workload; peers and nursing students from other college; lack of professional knowledge and skills and clinical environment) were statistically significant correlation with coping strategies, where P-value < 0.05.

    Conclusion: Clinical assignment was the main stressor among nursing students; therefore, successful activities should be promoted to help them in managing clinical assignment and enhancing knowledge in religion.

    MeSH terms: Adaptation, Psychological; Cross-Sectional Studies; Humans; Surveys and Questionnaires; Students, Nursing; Workload
  16. Rizal H, Hajar MS, Kueh YC, Muhamad AS, Kuan G
    Malays J Med Sci, 2019 Mar;26(2):99-113.
    PMID: 31447613 MyJurnal DOI: 10.21315/mjms2019.26.2.11
    Introduction: The transtheoretical model (TTM) is an integrative model of intentional change consisting of stages of change, processes of change, decisional balance and self-efficacy. This study aimed at validating the TTM questionnaires on physical activity for Malaysian children using confirmatory factor analysis.

    Methods: The participants were 381 Malay students (188 male; 193 female), aged 10-12 years old, with a mean age of 10.94 (SD = 0.81). The original version of the TTM was translated into the Malay language using forward and backward translation. Certain phrases were adapted based on the local culture and vocabulary suitable for primary school students.

    Results: The final measurement models and their fit indices were: processes of change (CFI = 0.939, TLI = 0.925, SRMR = 0.040, RMSEA = 0.030); decisional balance (CFI = 0.897, TLI = 0.864, SRMR = 0.045, RMSEA = 0.038); and self-efficacy (CFI = 0.934, TLI = 0.915, SRMR = 0.042, RMSEA = 0.032).

    Conclusion: Care must be taken when using the TTM with children, as it has been prevalently validated with adults. The final version of the TTM questionnaire for Malay primary school children had 24 items for process of changes, 13 items for self-efficacy and 10 items for decisional balance.

    MeSH terms: Adult; Child; Factor Analysis, Statistical; Female; Humans; Language; Malaysia; Male; Surveys and Questionnaires; Students; Translating; Translations; Vocabulary; Exercise; Self Efficacy
  17. Kaewkaen K, Uthama S, Ruengsirarak W, Puntumetakul R
    Malays J Med Sci, 2019 Mar;26(2):114-121.
    PMID: 31447614 DOI: 10.21315/mjms2019.26.2.12
    Introduction: The Wii Balance Board (WBB) is a commonly used tool for balance assessment, however the inconsistency in the reported validity for the WBB when used for the assessment of healthy young adults needs to be clarified.

    Aim: To investigate the concurrent validity and reliability of the WBB for balance assessment in healthy young adults.

    Methods: Thirty-two young adults participated in this study. Their ability to balance was tested while standing on a WBB and a laboratory-grade force platform, under three conditions: feet together with eyes open, feet together with eyes closed and semi-tandem standing with eyes open. They had 10 min resting period between tests. The agreement between the WBB and the laboratory-grade force platform was investigated, and the reliability of the WBB was determined.

    Results: A poor agreement between the WBB and the laboratory-grade force platform was found for all standing conditions [intraclass correlation coefficient (ICC) = 0.03 to 0.07]. A moderate to high reliability was found for the WBB for balance assessment in healthy young adults (ICC = 0.66 to 0.76).

    Conclusion: The WBB was found to be a reliable tool for static balance assessment in healthy young adults. However, it had poor validity compared to the laboratory-grade force platform.

    MeSH terms: Adult; Foot; Humans; Posture; Reproducibility of Results; Young Adult
  18. Heidari M, Borujeni MG, Rezaei P, Kabirian Abyaneh S
    Malays J Med Sci, 2019 Mar;26(2):122-130.
    PMID: 31447615 DOI: 10.21315/mjms2019.26.2.13
    BACKGROUND: Work-related musculoskeletal disorders (WMSDs) in nursing are regarded as an important factor for creating tension since they may often cause discontent, leave profession, and provide incorrect services to their clients. The present study aimed to determine WMSDs and their related factors among the nursing staff in university hospitals affiliated to Shiraz University of Medical Sciences (SUMS).

    METHODS: In the present descriptive cross-sectional study, 300 nurses in SUMS were selected based on systematic random sampling. To this aim, demographic information, and Nordic musculoskeletal disorder questionnaires were used for data collection. The data were analysed by descriptive and analytical tests (mean, standard deviation, independent t-test, and ANOVA) by SPSS/21 software.

    RESULTS: Based on the findings of WMSDs, low back disorders (88.33%) were more prevalent. In addition, a significant relationship was observed between WMSDs in different areas of the body with age, sex, and work experience and hours (P < 0.05).

    CONCLUSION: Regarding the high prevalence of WMSDs among nurses, it is recommended to adopt interventional program for preventing WMSDs by reducing working hours and physical pressure control.

  19. Samsuddin N, Razali A, Rahman NAA, Yusof MZ, Mahmood NAKN, Hair AFA
    Malays J Med Sci, 2019 Mar;26(2):131-137.
    PMID: 31447616 MyJurnal DOI: 10.21315/mjms2019.26.2.14
    The objectives of occupational health services (OHS) are to create a healthy and safe working environment, prevent work-related diseases, optimise employees' functional capacity and promote health. According to the literature, global accessibility to OHS has not shown much improvement and even worsened in certain countries. The main challenges come from the small and medium enterprises (SMEs). To respond to these global challenges, the basic occupational health services (BOHS) guideline was published under the purview of the World Health Organization and the International Labour Organization. The guideline describes BOHS as part of the infrastructure called the occupational safety and health system, an essential element that ensures the high service coverage and sustainability of the programme. The BOHS guideline was introduced in Malaysia by the Department of Occupational Safety and Health with a focus on SMEs, but its accessibility is low. A gap analysis was conducted between the current BOHS in Malaysia and the published international guideline. The important challenges identified that contributes to the low BOHS accessibility in Malaysia is the weakness in the BOHS infrastructure and OHS system provision. The proposed BOHS infrastructure model is meant to increase accessibility and to provide fair and equitable health services for Malaysians.
    MeSH terms: Health Services Accessibility; Humans; Labor Unions; Malaysia; Medical Assistance; Occupational Health Services; World Health Organization; Occupational Health
  20. Chua KO, See-Too WS, Ee R, Lim YL, Yin WF, Chan KG
    Front Microbiol, 2019;10:1758.
    PMID: 31447806 DOI: 10.3389/fmicb.2019.01758
    The most common quorum sensing (QS) system in Gram-negative bacteria consists of signaling molecules called N-acyl-homoserine lactones (AHLs), which are synthesized by an enzyme AHL synthase (LuxI) and detected by a transcriptional regulator (LuxR) that are usually located in close proximity. However, many recent studies have also evidenced the presence of LuxR solos that are LuxR-related proteins in Proteobacteria that are devoid of a cognate LuxI AHL synthase. Pandoraea species are opportunistic pathogens frequently isolated from sputum specimens of cystic fibrosis (CF) patients. We have previously shown that P. pnomenusa strains possess QS activity. In this study, we examined the presence of QS activity in all type strains of Pandoraea species and acquired their complete genome sequences for holistic bioinformatics analyses of QS-related genes. Only four out of nine type strains (P. pnomenusa, P. sputorum, P. oxalativorans, and P. vervacti) showed QS activity, and C8-HSL was the only AHL detected. A total of 10 canonical luxIs with adjacent luxRs were predicted by bioinformatics from the complete genomes of aforementioned species and publicly available Pandoraea genomes. No orphan luxI was identified in any of the genomes. However, genes for two LuxR solos (LuxR2 and LuxR3 solos) were identified in all Pandoraea genomes (except two draft genomes with one LuxR solo gene), and P. thiooxydans was the only species that harbored no QS-related activity and genes. Except the canonical LuxR genes, LuxIs and LuxR solos of Pandoraea species were distantly related to the other well-characterized QS genes based on phylogenetic clustering. LuxR2 and LuxR3 solos might represent two novel evolutionary branches of LuxR system as they were found exclusively only in the genus. As a few luxR solos were located in close proximity with prophage sequence regions in the genomes, we thus postulated that these luxR solos could be transmitted into genus Pandoraea by transduction process mediated by bacteriophage. The bioinformatics approach developed in this study forms the basis for further characterization of closely related species. Overall, our findings improve the current understanding of QS in Pandoraea species, which is a potential pharmacological target in battling Pandoraea infections in CF patients.
    MeSH terms: Bacteriophages; Cystic Fibrosis; Biological Evolution; Phylogeny; Sputum; Cluster Analysis; Computational Biology; Proteobacteria; Prophages; Burkholderiaceae; Quorum Sensing; Acyl-Butyrolactones
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