Browse publications by year: 2018

  1. Tan JH, Ng ZQ, Vendargon S
    BMJ Case Rep, 2018 Apr 17;2018.
    PMID: 29666108 DOI: 10.1136/bcr-2018-225271
    MeSH terms: Coronary Artery Bypass/methods*; Humans; Intraoperative Care/methods; Male; Middle Aged; Vena Cava, Superior/physiopathology; Brachiocephalic Veins/abnormalities*; Echocardiography, Transesophageal/methods; Coronary Sinus/physiopathology; Non-ST Elevated Myocardial Infarction/diagnosis; Non-ST Elevated Myocardial Infarction/physiopathology; Non-ST Elevated Myocardial Infarction/surgery*
  2. Kostadinović Veličkovska S, Catalin Moţ A, Mitrev S, Gulaboski R, Brühl L, Mirhosseini H, et al.
    J Food Sci Technol, 2018 May;55(5):1614-1623.
    PMID: 29666513 DOI: 10.1007/s13197-018-3050-0
    The bioactive compounds and "in vitro" antioxidant activity measured by three antioxidant assays of some traditional and non-traditional cold-pressed edible oils from Macedonia were object of this study. The fatty acid composition showed dominance of monounsaturated oleic acid in "sweet" and "bitter" apricot kernel oils with percentages of 66.7 ± 0.5 and 57.8 ± 0.3%, respectively. The most dominant fatty acid in paprika seed oil was polyunsaturated linoleic acid with abundance of 69.6 ± 2.3%. The most abundant tocopherol was γ-tocopherol with the highest quantity in sesame seed oil (57.6 ± 0.1 mg/100 g oil). Paprika seed oil, sesame seed oil and sweet apricot oil were the richest source of phytosterols. DPPH assay was the most appropriate for the determination of the antioxidant activity of cold-pressed sunflower oil due to high abundance of α-tocopherol with a level of 22.8 ± 1.1 mg/100 g of oil. TEAC assay is the best for the determination of the antioxidant activity of sesame seed oil and paprika seed oils as the richest sources of phenolic compounds. β-carotene assay was the most suitable assay for oils obtained from high pigmented plant material. Triacylglycerols and phytosterol profiles can be used as useful markers for the origin, variety and purity of the oils.
    MeSH terms: Prunus armeniaca; Antioxidants; Capsicum; Phytosterols; Sesame Oil; Triglycerides; beta Carotene; Oleic Acid; Linoleic Acid; alpha-Tocopherol; gamma-Tocopherol; Tocopherols; Sesamum; Oxygen Radical Absorbance Capacity
  3. Muanghorn W, Konsue N, Sham H, Othman Z, Mohamed F, Mohd Noor N, et al.
    J Food Sci Technol, 2018 May;55(5):1960-1965.
    PMID: 29666550 DOI: 10.1007/s13197-018-3104-3
    Effects of food irradiation on allergen and nutritional composition of giant freshwater prawn are not well documented. Thus, this study aimed to investigate the effects of gamma irradiation on tropomyosin allergen, proximate composition, and mineral elements in Macrobrachium rosenbergii. In this study, prawn was peeled, cut into small pieces, vacuum packaged and gamma irradiated at 0, 5, 7, 10 and 15 kGy with a dose rate of 0.5 kGy/h using cobalt-60 as the source, subsequently determined the level of tropomyosin, proximate composition and mineral elements respectively. The results showed that band density of tropomyosin irradiated at 10 and 15 kGy is markedly decreased. Proximate analysis revealed that moisture, protein, and carbohydrate content were significantly different as compared with non-irradiated prawn. Meanwhile, gamma irradiated M. rosenbergii at 15 kGy was observed to be significantly higher in nickel and zinc than the non-irradiated prawn. The findings provide a new information that food irradiation may affect the tropomyosin allergen, proximate composition and mineral elements of the prawn.
    MeSH terms: Allergens; Animals; Carbohydrates; Cobalt Radioisotopes; Food Irradiation; Fresh Water; Gamma Rays; Minerals; Nickel; Tropomyosin; Vacuum; Zinc; Palaemonidae
  4. Azam AB, Azizan EAB
    Int J Endocrinol, 2018;2018:7259704.
    PMID: 29666641 DOI: 10.1155/2018/7259704
    Primary hypertension is widely believed to be a complex polygenic disorder with the manifestation influenced by the interactions of genomic and environmental factors making identification of susceptibility genes a major challenge. With major advancement in high-throughput genotyping technology, genome-wide association study (GWAS) has become a powerful tool for researchers studying genetically complex diseases. GWASs work through revealing links between DNA sequence variation and a disease or trait with biomedical importance. The human genome is a very long DNA sequence which consists of billions of nucleotides arranged in a unique way. A single base-pair change in the DNA sequence is known as a single nucleotide polymorphism (SNP). With the help of modern genotyping techniques such as chip-based genotyping arrays, thousands of SNPs can be genotyped easily. Large-scale GWASs, in which more than half a million of common SNPs are genotyped and analyzed for disease association in hundreds of thousands of cases and controls, have been broadly successful in identifying SNPs associated with heart diseases, diabetes, autoimmune diseases, and psychiatric disorders. It is however still debatable whether GWAS is the best approach for hypertension. The following is a brief overview on the outcomes of a decade of GWASs on primary hypertension.
  5. Hoe HG, Zaki FM, Rashid AHA
    Sultan Qaboos Univ Med J, 2018 Feb;18(1):e93-e96.
    PMID: 29666688 DOI: 10.18295/squmj.2018.18.01.015
    Synovial haemangiomas are rare benign vascular proliferations arising in synovium-lined surfaces. While the knee is by far the joint most commonly involved, this condition can also occur in the elbow. We report an eight-year-old boy who presented to the National University of Malaysia Medical Centre, Kuala Lumpur, Malaysia, in 2016 with a left elbow swelling of one year's duration. Magnetic resonance imaging showed a lobulated intra-articular mass with intermediate signal intensity on T1-weighted imaging and low signal punctate and linear structures within the hyperintense mass on T2-weighted imaging. In addition, there was heterogeneous yet avid contrast enhancement on post-gadolinium contrast images. The mass had juxta-articular extension and bony erosion to the coronoid process and the head of the radius. Synovial haemangiomas present a diagnostic dilemma. This report highlights certain imaging characteristics to distinguish this entity from other differential diagnoses.
    MeSH terms: Child; Elbow/abnormalities*; Hemangioma/diagnosis*; Hemangioma/surgery; Humans; Magnetic Resonance Imaging/methods*; Malaysia; Male; Joint Capsule/pathology*; Joint Capsule/physiopathology
  6. Ariff MAM, Ros MIAC, Yahaya NHM
    Sultan Qaboos Univ Med J, 2018 Feb;18(1):e97-e99.
    PMID: 29666689 DOI: 10.18295/squmj.2018.18.01.016
    Pes anserine bursitis (PAB) is an inflammation of the bursa located between the medial aspect of the tibia and the hamstring muscles. It is common in patients with degenerative or inflammatory knee arthritis, usually has a self-limiting course and tends to respond well to conservative treatment. However, painful PAB directly following total knee replacement surgery is rare. We report two such cases who were diagnosed via ultrasonography at the Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia, in 2015. Both patients were treated locally with triamcinolone acetonide under ultrasound guidance and responded well to treatment.
    MeSH terms: Aged; Bursitis/diagnosis*; Female; Humans; Malaysia; Postoperative Complications/diagnosis; Tibia; Ultrasonography/methods; Arthroplasty, Replacement, Knee/adverse effects*; Posterior Tibial Tendon Dysfunction/diagnosis*; Hamstring Muscles/physiopathology; Hamstring Muscles/diagnostic imaging
  7. Weinberg RP, Koledova VV, Shin H, Park JH, Tan YA, Sinskey AJ, et al.
    Int J Alzheimers Dis, 2018;2018:7608038.
    PMID: 29666700 DOI: 10.1155/2018/7608038
    Alzheimer's disease is a severe neurodegenerative disease characterized by the aggregation of amyloid-β peptide (Aβ) into toxic oligomers which activate microglia and astrocytes causing acute neuroinflammation. Multiple studies show that the soluble oligomers of Aβ42 are neurotoxic and proinflammatory, whereas the monomers and insoluble fibrils are relatively nontoxic. We show that Aβ42 aggregation is inhibited in vitro by oil palm phenolics (OPP), an aqueous extract from the oil palm tree (Elaeis guineensis). The data shows that OPP inhibits stacking of β-pleated sheets, which is essential for oligomerization. We demonstrate the inhibition of Aβ42 aggregation by (1) mass spectrometry; (2) Congo Red dye binding; (3) 2D-IR spectroscopy; (4) dynamic light scattering; (5) transmission electron microscopy; and (6) transgenic yeast rescue assay. In the yeast rescue assay, OPP significantly reduces the cytotoxicity of aggregating neuropeptides in yeast genetically engineered to overexpress these peptides. The data shows that OPP inhibits (1) the aggregation of Aβ into oligomers; (2) stacking of β-pleated sheets; and (3) fibrillar growth and coalescence. These inhibitory effects prevent the formation of neurotoxic oligomers and hold potential as a means to reduce neuroinflammation and neuronal death and thereby may play some role in the prevention or treatment of Alzheimer's disease.
  8. Lajis AFB
    J Lipids, 2018;2018:5659683.
    PMID: 29666707 DOI: 10.1155/2018/5659683
    For decades, microbial lipases are notably used as biocatalysts and efficiently catalyze various processes in many important industries. Biocatalysts are less corrosive to industrial equipment and due to their substrate specificity and regioselectivity they produced less harmful waste which promotes environmental sustainability. At present, thermostable and alkaline tolerant lipases have gained enormous interest as biocatalyst due to their stability and robustness under high temperature and alkaline environment operation. Several characteristics of the thermostable and alkaline tolerant lipases are discussed. Their molecular weight and resistance towards a range of temperature, pH, metal, and surfactants are compared. Their industrial applications in biodiesel, biodetergents, biodegreasing, and other types of bioconversions are also described. This review also discusses the advance of fermentation process for thermostable and alkaline tolerant lipases production focusing on the process development in microorganism selection and strain improvement, culture medium optimization via several optimization techniques (i.e., one-factor-at-a-time, surface response methodology, and artificial neural network), and other fermentation parameters (i.e., inoculums size, temperature, pH, agitation rate, dissolved oxygen tension (DOT), and aeration rate). Two common fermentation techniques for thermostable and alkaline tolerant lipases production which are solid-state and submerged fermentation methods are compared and discussed. Recent optimization approaches using evolutionary algorithms (i.e., Genetic Algorithm, Differential Evolution, and Particle Swarm Optimization) are also highlighted in this article.
  9. Sundararajan V, Sarkar FH, Ramasamy TS
    Cell Oncol (Dordr), 2018 06;41(3):223-252.
    PMID: 29667069 DOI: 10.1007/s13402-018-0378-4
    BACKGROUND: Recent advances in cancer biology have highlighted the relevance of exosomes and nanovesicles as carriers of genetic and biological messages between cancer cells and their immediate and/or distant environments. It has been found that these molecular cues may play significant roles in cancer progression and metastasis. Cancer cells secrete exosomes containing diverse molecules that can be transferred to recipient cells and/or vice versa to induce a plethora of biological processes, including angiogenesis, metastasis formation, therapeutic resistance, epithelial-mesenchymal transition and epigenetic/stemness (re)programming. While exosomes interact with cells within the tumour microenvironment to promote tumour growth, these vesicles can also facilitate the process of distant metastasis by mediating the formation of pre-metastatic niches. Next to their tumour promoting effects, exosomes have been found to serve as potential tools for cancer diagnosis and therapy. The ease of isolating exosomes and their content from different body fluids has led to the identification of diagnostic and prognostic biomarker signatures, as well as to predictive biomarker signatures for therapeutic responses. Exosomes can also be used as cargos to deliver therapeutic anti-cancer drugs, and they can be engineered to serve as vaccines for immunotherapy. Additionally, it has been found that inhibition of exosome secretion, and thus the transfer of oncogenic molecules, holds promise for inhibiting tumour growth. Here we provide recent information on the diverse roles of exosomes in various cellular and systemic processes governing cancer progression, and discuss novel strategies to halt this progression using exosome-based targeted therapies and methods to inhibit exosome secretion and the transfer of pro-tumorigenic molecules.

    CONCLUSIONS: This review highlights the important role of exosomes in cancer progression and its implications for (non-invasive) diagnostics and the development of novel therapeutic strategies, as well as its current and future applications in clinical trials.

    MeSH terms: Aging; Cell Communication; Cell Transformation, Neoplastic; Clinical Trials as Topic; Humans; Immunotherapy; Neoplasm Metastasis; Neoplasms/diagnosis*; Neoplasms/drug therapy; Neoplasms/therapy*; Biomarkers, Tumor; Disease Progression; Drug Resistance, Neoplasm; Exosomes/metabolism; Exosomes/physiology*; Exosomes/ultrastructure; Epithelial-Mesenchymal Transition; Tumor Microenvironment
  10. Teh CL, Wan SA, Ling GR
    Clin Rheumatol, 2018 Aug;37(8):2081-2086.
    PMID: 29667100 DOI: 10.1007/s10067-018-4102-6
    Infection is a major cause of morbidity and mortality among patients with systemic lupus erythematosus (SLE). To describe the pattern of serious infections in patients with SLE and to identify the predictors of infection-related mortality among SLE patients with serious infections, we prospectively studied all SLE patients who were hospitalized with infections in Sarawak General Hospital during 2011-2015. Demographic data, clinical features, and outcomes were collected. Cox regression analysis was carried out to determine the independent predictors of infection-related mortality. There were a total of 125 patients with 187 episodes of serious infections. Our patients were of multiethnic origins with female predominance (89.6%). Their mean age was 33.4 ± 14.2 years. The patients had a mean disease duration of 66.8 ± 74.0 months. The most common site of infection was pulmonary (37.9%), followed by septicemia (22.5%). Gram-negative organisms (38.2%) were the predominant isolates within the cohort. There were 21 deaths (11.2%) during the study period. Independent predictors of infection-related mortality among our cohort of SLE patients were flare of SLE (HR 3.98, CI 1.30-12.21) and the presence of bacteremia (HR 2.54, CI 0.98-6.59). Hydroxychloroquine was protective of mortality from serious infections (HR 9.26, CI 3.40-25.64). Pneumonia and Gram-negative organisms were the predominant pattern of infection in our SLE cohort. The presence of flare of SLE and bacteremia were independent prognostic predictors of infection-related mortality, whereas hydroxychloroquine was protective of infection-related mortality among SLE patients with serious infections.
    MeSH terms: Adult; Bacterial Infections/microbiology; Bacterial Infections/mortality; Bacterial Infections/epidemiology*; Candidiasis/microbiology; Candidiasis/mortality; Candidiasis/epidemiology*; Enzyme Inhibitors/therapeutic use; Female; Herpes Zoster/mortality; Herpes Zoster/epidemiology*; Hospitalization; Humans; Hydroxychloroquine/therapeutic use; Immunosuppressive Agents/therapeutic use; Lupus Erythematosus, Systemic/complications*; Lupus Erythematosus, Systemic/mortality; Malaysia/epidemiology; Male; Middle Aged; Prospective Studies; Young Adult; Tertiary Care Centers
  11. Sasmita AO, Kuruvilla J, Ling APK
    Int J Neurosci, 2018 Nov;128(11):1061-1077.
    PMID: 29667473 DOI: 10.1080/00207454.2018.1466781
    Background and purpose: Neurological diseases and injuries to the nervous system may cause inadvertent damage to neuronal and synaptic structures. Such phenomenon would lead to the development of neurological and neurodegenerative disorders which might affect memory, cognition and motoric functions. The body has various negative feedback systems which can induce beneficial neuroplastic changes in mediating some neuronal damage; however, such efforts are often not enough to ameliorate the derogatory changes. Materials and methods: Articles discussing studies to induce beneficial neuroplastic changes were retrieved from the databases, National Center for Biotechnology Information (NCBI) and MEDLINE, and reviewed. Results: This review highlights the significance of neuroplasticity in restoring neuronal functions and current advances in research to employ this positive cellular event by inducing synaptogenesis, neurogenesis, clearance of toxic amyloid beta (Aβ) and tau protein aggregates, or by providing neuroprotection. Compounds ranging from natural products (e.g. bilobalides, curcumin) to novel vaccines (e.g. AADvac1, RG7345) have been reported to induce long-lasting neuroplasticity in vitro and in vitro. Activity-dependent neuroplasticity is also inducible by regimens of exercises and therapies with instances in human studies proving major successes. Lastly, mechanical stimulation of brain regions through therapeutic hypothermia or deep brain stimulation has given insight on the larger scale of neuroplasticity within the nervous system. Conclusion: Harnessing neuroplasticity may not only offer an arm in the vast arsenal of approaches being taken to tackle neurological disorders, such as neurodegenerative diseases, but from ample evidence, it also has major implications in neuropsychological disorders.
    MeSH terms: Animals; Forecasting; Humans; Nervous System Diseases/diagnosis; Nervous System Diseases/metabolism*; Nervous System Diseases/therapy*; Neuronal Plasticity/drug effects; Neuronal Plasticity/physiology*; Neurons/drug effects; Neurons/metabolism*; Neurons/pathology; Neuroprotective Agents/pharmacology; Neuroprotective Agents/therapeutic use
  12. Amin NA, Quek KF, Oxley JA, Noah R, Nordin R
    Int J Occup Environ Med, 2018 04;9(2):69-78.
    PMID: 29667644 DOI: 10.15171/ijoem.2018.1158
    BACKGROUND: Emotional distress is becoming a great concern and is more common in both developed and developing countries. It is associated with several disease conditions.

    OBJECTIVE: To determine the prevalence of self-perceived emotional distress and its relation to work-related musculoskeletal disorders (WRMSDs) in nurses.

    METHODS: A self-administered questionnaire survey was carried out on 660 female nurses working in public hospitals in the Klang Valley, Malaysia. The validated Malay version of the standardized Nordic musculoskeletal questionnaire (M-SNMQ) was used to identify the annual prevalence of WRMSDs; perceived emotional distress was assessed using the validated Malay short version, depression, anxiety, and stress (M-DASS) instrument. In addition, socio-demographic and occupational profiles of the participants were considered. Factors associated with WRMSDs were identified using logistic regression analysis.

    RESULTS: A total of 376 nurses completed the survey (response rate 83.3%). 73.1% of the nursing staffs experienced WRMSDs in at least one anatomical site 12 months prior to the study. 75% of nurses expressed emotional distress. Of these, over half also reported anxiety and stress. Multiple logistic regression analysis showed that stress and anxiety significantly increased the risk of WRMSDs by approximately twofold.

    CONCLUSION: There were significant associations between emotional distress and WRMSDs. Future longitudinal studies are therefore needed to investigate and identify the sources of emotional distress (non-occupational and occupational) to be used to establish preventive strategies to reduce the risk of WRMSDs.

    MeSH terms: Adult; Female; Humans; Malaysia; Musculoskeletal Diseases/epidemiology; Musculoskeletal Diseases/psychology*; Nurses/psychology*; Occupational Diseases/epidemiology; Occupational Diseases/psychology*; Surveys and Questionnaires; Stress, Psychological/psychology*; Prevalence
  13. Daud AB, Mohd Fuzi NMH, Wan Mohammad WMZ, Amran F, Ismail N, Arshad MM, et al.
    Int J Occup Environ Med, 2018 04;9(2):88-96.
    PMID: 29667646 DOI: 10.15171/ijoem.2018.1164
    BACKGROUND: Leptospirosis is an emerging zoonosis and its occurrence has been reported to be rising globally. The environment plays an important role in the survival of Leptospira and determines the risk of infection. Those who were exposed to and had contact with contaminated environment through their occupational, recreational and other activities can be infected with the organism.

    OBJECTIVE: To determine the seroprevalence of leptospirosis among cattle farmers, prevalence of pathogenic Leptospira, and the workplace environmental risk factors for leptospirosis among cattle farmers in northeastern Malaysia.

    METHODS: A cross-sectional study involving 120 cattle farmers was conducted. The participants answered an interviewer-guided questionnaire that consisted of sociodemographic and workplace environment characteristics questionnaire, before having their blood sample taken for microscopic agglutination test (MAT). Seropositivity was determined using a cut-off titer of ≥1:100. 248 environmental samples were also collected from the cattle farms for polymerase chain reaction (PCR).

    RESULTS: The overall seroprevalence of leptospiral antibodies was 72.5% (95% CI 63.5% to 80.1%) and the prevalence of pathogenic Leptospira in the cattle farms environment was 12.1% (95% CI 8.4% to 17.0%). The independent factors associated with seropositivity of leptospirosis among cattle farmers were positive pathogenic Leptospira in the environment (Adj OR 5.90, 95% CI 1.34 to 26.01) and presence of garbage dumping in the farm (Adj OR 2.40, 95% CI 1.02 to 5.65).

    CONCLUSION: Preventing leptospirosis incidence among cattle farmers necessitates changes in work environment. Identifying modifiable factors may also contribute to the reduction of infection.

    MeSH terms: Farmers; Adult; Aged; Animals; Cattle; Cross-Sectional Studies; Female; Humans; Leptospira/pathogenicity*; Leptospirosis/epidemiology*; Malaysia/epidemiology; Male; Middle Aged; Occupational Diseases/etiology*; Occupational Diseases/epidemiology; Risk Factors; Prevalence; Young Adult
  14. Pui WC, Ling WHY, Najah M, Soon SY
    Asian Cardiovasc Thorac Ann, 2018 Jun;26(5):410-412.
    PMID: 29667901 DOI: 10.1177/0218492318772763
    Primary liposarcoma is an extremely rare disease. We report a case of giant thoracic myxoid liposarcoma that occupied the whole left hemithorax and was successfully resected. We discuss the surgical considerations and difficulties encountered, and how we overcome these challenges. This is the third largest thoracic myxoid liposarcoma resection reported, weighing 4 kg.
    MeSH terms: Biopsy; Humans; Male; Mediastinal Neoplasms/pathology; Mediastinal Neoplasms/surgery*; Middle Aged; Tomography, X-Ray Computed; Treatment Outcome; Liposarcoma, Myxoid/pathology; Liposarcoma, Myxoid/surgery*; Tumor Burden
  15. Lim RBT, Cheung ONY, Tham DKT, La HH, Win TT, Chan R, et al.
    Global Health, 2018 04 16;14(1):36.
    PMID: 29661249 DOI: 10.1186/s12992-018-0358-5
    BACKGROUND: There is an increasing global movement of foreign female entertainment workers (FEWs), a hard-to-reach population vulnerable to HIV/STIs. This paper described the needs assessment phase before intervention implementation where the socio-organisation, sexual risk behaviours and access to health services of foreign FEWs in Singapore were explored. We also highlighted how qualitative inquiry, census enumeration technique and community-based engagement approaches were used to gain access and to develop a culturally appropriate STI prevention intervention.

    METHODS: In-depth interviews, observations, informal conversational interviews, mystery client and critical incident technique were used. We estimated the size of FEW population using the census enumeration technique. The findings were used to inform intervention development and implementation.

    RESULTS: We estimated 376 Vietnamese and 330 Thai FEWs in 2 geographical sites where they operated in Singapore. Their reasons for non-condom use included misconceptions on the transmission and consequences of STI/HIV, low risk perception of contracting HIV/STI from paid/casual partner, lack of skills to negotiate or to persuade partner to use condom, unavailability of condoms in entertainment establishments and fear of the police using condom as circumstantial evidence. They faced difficulties in accessing health services due to fear of identity exposure, stigmatisation, cost and language differences. To develop the intervention, we involved FEWs and peer educators, and ensured that the intervention was non-stigmatising and met their needs. To foster their participation, we used culturally-responsive recruitment strategies, and ensured that the trial was anonymous and acceptable to the FEWs. These strategies were effective as we achieved a participation rate of 90.3%, a follow-up rate of 70.5% for the comparison and 66.8% for the intervention group. The interventions group reported a significant increase in consistent condom use with a reduction in STI incidence compared to no significant change in the comparison group.

    CONCLUSIONS: The qualitative inquiry approaches to gain access, to foster participation and to develop a culturally appropriate intervention, along with the census enumeration technique application to estimate the FEW population sizes has led to successful intervention implementation as well as safer sexual behaviour and STI incidence reduction.

    TRIAL REGISTRATION: ClinicalTrials.gov, NCT02780986 . Registered 23 May 2016 (retrospectively registered).

    MeSH terms: Female; Health Promotion/methods*; Health Services Accessibility; Humans; Sexually Transmitted Diseases/epidemiology; Sexually Transmitted Diseases/prevention & control*; Singapore/epidemiology; Thailand/ethnology; Vietnam/ethnology; Program Evaluation; Condoms/statistics & numerical data; Qualitative Research; Emigrants and Immigrants/psychology*; Emigrants and Immigrants/statistics & numerical data; Cultural Competency; Community-Based Participatory Research; Sex Workers/psychology*; Sex Workers/statistics & numerical data
  16. Asad M, Saba N, Asiri AM, Jawaid M, Indarti E, Wanrosli WD
    Carbohydr Polym, 2018 Jul 01;191:103-111.
    PMID: 29661297 DOI: 10.1016/j.carbpol.2018.03.015
    TEMPO-oxidize nanocellulose (TONC) suspension has been obtained from total chlorine free (TCF) oil palm empty-fruit-bunches (OPEFB) pulp using 4-acetamido-TEMPO (2,2,6,6-tetramethyl piperidin-1-oxyl) mediated oxidation with sodium hypochlorite and sodium bromide in water at 25 °C and pH 10. TONC suspension with varied content from 0.5 to 6% (w/w) reinforced polyvinyl alcohol (PVA) polymer based nanocomposite films were prepared by the casting method. The structural interaction between the TONC and PVA was characterized by the Fourier transform infrared (FT-IR) spectroscopy, nuclear magnetic resonance (NMR) spectroscopy, X-ray diffraction (XRD) and scanning electron microscopy (SEM). It was found that the 4% (w/w) TONC content reinforced nanocomposite exhibited the highest tensile strength and modulus with an increase of 122% and 291% respectively, compared to PVA while the elongation at break decreased about 42.7%. Thermal stability of PVA based nanocomposite films was improved after incorporation of TONC. Incorporation of TONC in PVA film increases its crystallinity due to strongly linking between the hydroxyl groups of materials however considerable decreases beyond 2 wt% loading are observed. TONC incorporation beyond 2 wt% also reduces the melting temperature peaks and enthalpy of nanocomposite films. FT-IR spectra, NMR and SEM indicate that there is interaction between the TONC and PVA.
  17. Habiba U, Siddique TA, Li Lee JJ, Joo TC, Ang BC, Afifi AM
    Carbohydr Polym, 2018 Jul 01;191:79-85.
    PMID: 29661324 DOI: 10.1016/j.carbpol.2018.02.081
    The chitosan/polyvinyl Alcohol/zeolite electrospun composite nanofibrous membrane was fabricated for adsorption of methyl orange. The EDX, TGA and tensile test were carried out for the characterization of the membrane. The Young's Modulus of the nanofibrous membranes increased by more than 100% with the addition of zeolite to chitosan/PVA. The batch adsorption tests were conducted by varying the initial concentration of methyl orange, contact time and pH of the dye solution. UV-vis results showed that most of the dye was adsorbed within 6 min. An adsorption kinetic study was carried out using the pseudo-second-order kinetic model, Lagergren-first-order model and intra particle diffusion model. The adsorption kinetics obeyed the Pseudo second order model. The adsorption mechanism was analyzed using the Langmuir and Freundlich isotherm model. The experimental data fits well with the Freundlich model. The adsorption capacity of the membrane was 153 mg/g. Adsorption capacity was decreased with increasing pH value. The resulting nanofiber became less active over methyl orange after several runs.
  18. Liu WJ, Musa R, Chew TF, Lim CTS, Morad Z, Bujang MAB
    Am J Med Sci, 2018 04;355(4):322-330.
    PMID: 29661345 DOI: 10.1016/j.amjms.2017.11.015
    BACKGROUND: The effect of dialysis treatment is complex, with both clinical and socio-psychological effects. In this study, we aimed to assess the psychological status of this growing population of end-stage renal disease.

    METHODS: Using the Short Form of Depression, Anxiety and Stress Scale (DASS21) questionnaire, we aimed (1) to measure the psychological states of hemodialysis (HD) or peritoneal dialysis (PD) subjects from 15 sites, (2) to compare DASS21 scores between HD and PD, and (3) to identify the associated demographic and medical factors of better psychological states.

    RESULTS: A total of 1,332 were eligible for analysis. Stress (48%) recorded the highest negative emotional states, followed by depression (37%) and anxiety (20%). By multivariate analysis, normal body mass index weight status, religion and absence of coronary artery disease were associated with lower score for depression, anxiety and stress, respectively. Tertiary education was associated with the lowest score in depression and anxiety, whereas HD had a lower score in stress than PD. A younger age was associated with worse DASS21 score of anxiety and stress.

    CONCLUSIONS: Obesity, religion and coronary artery disease were significantly associated with all 3 symptoms of depression, anxiety and stress. Older age has a protective effect on anxiety and stress. Further study is needed to evaluate the relationship between these significant factors and each psychological state.

    MeSH terms: Anxiety; Body Weight; Coronary Artery Disease; Demography; Depression; Depressive Disorder; Renal Dialysis; Kidney Failure, Chronic; Obesity; Peritoneal Dialysis; Surveys and Questionnaires; Body Mass Index; Multivariate Analysis
  19. Al-Namnam NMN, Hariri F, Rahman ZAA
    Br J Oral Maxillofac Surg, 2018 06;56(5):353-366.
    PMID: 29661509 DOI: 10.1016/j.bjoms.2018.03.002
    Our aim was to summarise current published evidence about the prognosis of various techniques of craniofacial distraction osteogenesis, particularly its indications, protocols, and complications. Published papers were acquired from online sources using the keywords "distraction osteogenesis", "Le Fort III", "monobloc", and "syndromic craniosynostosis" in combination with other keywords, such as "craniofacial deformity" and "midface". The search was confined to publications in English, and we followed the guidelines of the PRISMA statement. We found that deformity of the skull resulted mainly from Crouzon syndrome. Recently craniofacial distraction has been achieved by monobloc distraction osteogenesis using an external distraction device during childhood, while Le Fort III distraction osteogenesis was used in maturity. Craniofacial distraction was indicated primarily to correct increased intracranial pressure, exorbitism, and obstructive sleep apnoea in childhood, while midface hypoplasia was the main indication in maturity. Overall the most commonly reported complications were minor inflammatory reactions around the pins, and anticlockwise rotation when using external distraction systems. The mean amount of bony advancement was 12.3mm for an external device, 18.6mm for an internal device and 18.7mm when both external and internal devices were used. Treatment by craniofacial distraction must be validated by long-term studies as there adequate data are lacking, particularly about structural relapse and the assessment of function.
    MeSH terms: Craniofacial Dysostosis/complications; Craniofacial Dysostosis/surgery*; Exophthalmos/etiology; Exophthalmos/surgery; Facial Bones/abnormalities; Humans; Postoperative Complications; Reoperation; Treatment Outcome; Intracranial Hypertension/etiology; Intracranial Hypertension/surgery; Sleep Apnea, Obstructive/etiology; Sleep Apnea, Obstructive/surgery
  20. Safni I, Subandiyah S, Fegan M
    Front Microbiol, 2018;9:419.
    PMID: 29662468 DOI: 10.3389/fmicb.2018.00419
    Ralstonia solanacearum species complex phylotype IV strains, which have been primarily isolated from Indonesia, Australia, Japan, Korea, and Malaysia, have undergone recent taxonomic and nomenclatural changes to be placed in the species Ralstonia syzygii. This species contains three subspecies; Ralstonia syzygii subsp. syzygii, a pathogen causing Sumatra disease of clove trees in Indonesia, Ralstonia syzygii subsp. indonesiensis, the causal pathogen of bacterial wilt disease on a wide range of host plants, and Ralstonia syzygii subsp. celebesensis, the causal pathogen of blood disease on Musa spp. In Indonesia, these three subspecies have devastated the cultivation of susceptible host plants which have high economic value. Limited knowledge on the ecology and epidemiology of the diseases has hindered the development of effective control strategies. In this review, we provide insights into the ecology, epidemiology and disease control of these three subspecies of Ralstonia syzygii.
    MeSH terms: Australia; Electron Transport Complex IV; Ecology; Hematologic Diseases; Indonesia; Japan; Malaysia; Plants; Trees; Syzygium; Musa; Ralstonia; Ralstonia solanacearum; Republic of Korea
External Links