Browse publications by year: 2018

  1. Widodo, Pristiwanto B, Rifa'i M, Mustafa I, Huyop FZ
    Ann Med Surg (Lond), 2018 Nov;35:55-58.
    PMID: 30294429 DOI: 10.1016/j.amsu.2018.09.014
    Background: Epstein-Barr virus (EBV) is closely associated with the high incidence of nasopharyngeal carcinoma in worldwide. Vaccination is one strategy with the potential to prevent the occurrence of EBV-associated cancers, but a suitable vaccine is yet to be licensed. Much vaccine development research focuses on the GP350/220 protein of EBV as it contains an immunogenic epitope at residues 147-165, which efficiently stimulates IgG production in vitro. We examined the ability of this epitope (EBVepitope) to induce IgG production in mice.

    Methods: The antibody binding pattern of the epitope was analyzed using bioinformatics tools. The IgG production in mice were examined by FACS Calibur™ Flow cytometer.

    Results: The epitope bound the 72A1 monoclonal antibody at the same site as GP350/220 protein, indicating that the epitope should stimulate B cells to produce antibody. Moreover, in vivo administration of EBVepitope successfully induced IgG expression from B cells, compared with controls. Further investigation indicated that the relative number of B cells expressing IgE in EBVepitope-treated mice was lower than controls.

    Conclusions: Our data suggest that this EBV GP350 epitope is able to induce IgG expression in vivo without causing allergic reactions, and represents a potential EBV vaccine candidate.

    MeSH terms: Animals; Antibodies, Monoclonal; Epitopes; B-Lymphocytes; Herpesvirus 4, Human; Hypersensitivity; Immunoglobulin E; Immunoglobulin G; Nasopharyngeal Neoplasms; Vaccination; Incidence; Computational Biology; Mice
  2. Guest H, Dewey RS, Plack CJ, Couth S, Prendergast G, Bakay W, et al.
    Trends Hear, 2018;22:2331216518803213.
    PMID: 30295145 DOI: 10.1177/2331216518803213
    Lifetime noise exposure is generally quantified by self-report. The accuracy of retrospective self-report is limited by respondent recall but is also bound to be influenced by reporting procedures. Such procedures are of variable quality in current measures of lifetime noise exposure, and off-the-shelf instruments are not readily available. The Noise Exposure Structured Interview (NESI) represents an attempt to draw together some of the stronger elements of existing procedures and to provide solutions to their outstanding limitations. Reporting is not restricted to prespecified exposure activities and instead encompasses all activities that the respondent has experienced as noisy (defined based on sound level estimated from vocal effort). Changing exposure habits over time are reported by dividing the lifespan into discrete periods in which exposure habits were approximately stable, with life milestones used to aid recall. Exposure duration, sound level, and use of hearing protection are reported for each life period separately. Simple-to-follow methods are provided for the estimation of free-field sound level, the sound level emitted by personal listening devices, and the attenuation provided by hearing protective equipment. An energy-based means of combining the resulting data is supplied, along with a primarily energy-based method for incorporating firearm-noise exposure. Finally, the NESI acknowledges the need of some users to tailor the procedures; this flexibility is afforded, and reasonable modifications are described. Competency needs of new users are addressed through detailed interview instructions (including troubleshooting tips) and a demonstration video. Limited evaluation data are available, and future efforts at evaluation are proposed.
    MeSH terms: Female; Hearing Loss, Noise-Induced/diagnosis*; Hearing Loss, Noise-Induced/epidemiology*; Humans; Interviews as Topic; Male; Noise, Occupational/adverse effects*; Prognosis; Retrospective Studies; Severity of Illness Index; Time Factors; Cohort Studies; Risk Assessment; Needs Assessment; Self Report*
  3. Sirunyan AM, Tumasyan A, Adam W, Ambrogi F, Asilar E, Bergauer T, et al.
    Phys Rev Lett, 2018 Sep 21;121(12):121801.
    PMID: 30296133 DOI: 10.1103/PhysRevLett.121.121801
    The observation of the standard model (SM) Higgs boson decay to a pair of bottom quarks is presented. The main contribution to this result is from processes in which Higgs bosons are produced in association with a W or Z boson (VH), and are searched for in final states including 0, 1, or 2 charged leptons and two identified bottom quark jets. The results from the measurement of these processes in a data sample recorded by the CMS experiment in 2017, comprising 41.3  fb^{-1} of proton-proton collisions at sqrt[s]=13  TeV, are described. When combined with previous VH measurements using data collected at sqrt[s]=7, 8, and 13 TeV, an excess of events is observed at m_{H}=125  GeV with a significance of 4.8 standard deviations, where the expectation for the SM Higgs boson is 4.9. The corresponding measured signal strength is 1.01±0.22. The combination of this result with searches by the CMS experiment for H→bb[over ¯] in other production processes yields an observed (expected) significance of 5.6 (5.5) standard deviations and a signal strength of 1.04±0.20.
    MeSH terms: Aircraft; Dairy Products; Data Collection; Motivation; Protons; United States
  4. Mohammad Hanafiah, Mohd Farhan Hamdan, Azura Mohamed Mukhari Shahizon, Wong, Sau Wei, Yoganathan Kanaheswari
    Neurology Asia, 2018;23(2):179-184.
    MyJurnal
    Granulomatous amoebic encephalitis caused by Acanthamoeba is a rare entity mainly affecting
    immunocompromised patients. We reported a case of Acanthamoeba encephalitis of a 1-year-old
    immunocompetent child and described the CT and MRI findings of the brain, while reviewing the
    relevant literatures. The imaging findings of Acanthamoeba meningoencepalitis in immunocompetent
    patients are non-specific and pose a diagnostic challenge.
    MeSH terms: Acanthamoeba; Brain; Child; Encephalitis; Humans; Magnetic Resonance Imaging; Tomography, X-Ray Computed; Immunocompromised Host
  5. Zam Zureena Mohd Rani, Nor Azian Abdul Murad, Saberi Saimun, Sri Noraima Othman, Rahman Jamal, Sue-Mian Then, et al.
    Neurology Asia, 2018;23(2):137-144.
    MyJurnal
    Background: The HLA-B*15:02 polymorphism in epileptic patients is known to be associated with carbamazepine-induced Stevens-Johnson syndrome (SJS). The prevalence of HLA-B*15:02 polymorphism seemed to be ethnic-specific with a higher frequency of HLA-B*15:02 in Asian compared to the Europeans. This study was performed to determine the frequency of the HLA-B*15:02 polymorphism in epileptic patients at the Chancellor Tuanku Muhriz Hospital-UKM Medical Centre (HCTM-UKMMC) using high resolution melting-real time PCR (HRM-QPCR) method.
    Methods: We performed a fast and effective in-house high resolution melting-real time polymerase chain reaction method and compared it with the conventional multiplex-PCR method. The specificity and sensitivity of each test were also determined using DNA from saliva.
    Results: Using the conventional multiplexPCR approach for screening, 25 out of 64 (39.1%) epileptic patients were positive for HLA-B*15:02. However, using the HRM-QPCR technique, 24/64 (37.5%) of the patients were positive. The one patient who tested positive by the multiplex-PCR but negative using the HRM-QPCR turned out to be negative by DNA sequencing. The HRM-QPCR and DNA sequencing showed 100% sensitivity and specificity. The multiplex-PCR showed 100% sensitivity and 98.4% specificity compared to both HRM-QPCR and DNA sequencing. The HRM-QPCR is also more cost-effective (
    MeSH terms: Base Sequence; Carbamazepine; DNA; Humans; Saliva; Stevens-Johnson Syndrome; HLA-B Antigens; Prevalence; Sequence Analysis, DNA; Multiplex Polymerase Chain Reaction; Real-Time Polymerase Chain Reaction
  6. Chen KH, Lee SY, Show PL, Hong SC, Chang YK
    J Chromatogr B Analyt Technol Biomed Life Sci, 2018 Nov 15;1100-1101:65-75.
    PMID: 30292951 DOI: 10.1016/j.jchromb.2018.09.039
    Dye-ligand affinity chromatography in a stirred fluidized bed has been developed for the rapid recovery of malate dehydrogenase (MDH) from highly turbid baker's yeast cell homogenate in a single step. The most suitable dye, namely Reactive Orange 4, in its optimal immobilized concentration of 8.78 mg/mL was immobilized onto high-density STREAMLINE matrix. To further examine optimal adsorption and elution conditions, the enzyme recovery operation was carried out using unclarified cell homogenates in stirred fluidized bed system. Aiming to develop a non-specific eluent, namely NaCl, to effectively elute the MDH adsorbed, direct recovery of MDH from highly turbid cell homogenate (50% w/v) in a stirred fluidized bed adsorption system was performed. The proposed system successfully achieved a recovery yield of 73.6% and a purification factor of 73.5 in a single step by using 0.6 M NaCl as an eluent at a high liquid velocity of 200 cm/h.
    MeSH terms: Adsorption; Azo Compounds/chemistry; Cell Extracts/chemistry*; Chromatography, Affinity/methods*; Coloring Agents/chemistry; Equipment Design; Hydrogen-Ion Concentration; Malate Dehydrogenase/analysis; Malate Dehydrogenase/isolation & purification*; Malate Dehydrogenase/metabolism; Saccharomyces cerevisiae/enzymology*; Sulfuric Acid Esters/chemistry
  7. Nelwati, Abdullah KL, Chan CM
    Nurse Educ Today, 2018 Dec;71:185-192.
    PMID: 30293048 DOI: 10.1016/j.nedt.2018.09.018
    BACKGROUND: Peer learning experiences have been reported in previous qualitative studies, however individual findings could limit practical leverage due to small sample size. Thus it is necessary to integrate invaluable findings from various qualitative studies to consider appropriateness and acceptability of peer learning in professional nurse education.

    OBJECTIVE: To identify and synthesize qualitative evidence of peer learning experiences of undergraduate nursing students so as to understand their perceptions on peer learning experiences.

    DESIGN: A qualitative systematic review was conducted in accordance with the Enhancing Transparency in Reporting the Synthesis of Qualitative Research (ENTREQ) statement.

    DATA SOURCES: Database searching was conducted on electronic databases such as Cumulative Index to Nursing and Allied Health Literature (CINAHL), Science Direct, and MEDLINE that published from 2007 to 2017.

    REVIEW METHODS: Qualitative studies were appraised using the Critical Appraisal Skills Programme (CASP). Thematic analysis was used to analyse the data using line by line coding, organising coding into descriptive themes, and interpreting further to generate new insights.

    RESULTS: Six studies were included in this review. The most common themes identified were integrated into two new insights including personal development and professional development.

    CONCLUSION: This review has revealed that peer learning experiences contribute to the learning process of undergraduate nursing students in preparing them to become professional nurses through personal development and professional development.

    MeSH terms: Education, Nursing, Baccalaureate/methods; Education, Nursing, Baccalaureate/standards*; Humans; Peer Group; Students, Nursing; Teaching/standards*; Qualitative Research*
  8. Wong GR, Mazumdar P, Lau SE, Harikrishna JA
    J Plant Physiol, 2018 Dec;231:219-233.
    PMID: 30292098 DOI: 10.1016/j.jplph.2018.09.018
    Genetic improvement is an important approach for crop improvement towards yield stability in stress-prone areas. Functional analysis of candidate stress response genes can provide key information to allow the selection and modification of improved crop varieties. In this study, the constitutive expression of a banana cDNA, MaRHD3 in Arabidopsis improved the ability of transgenic lines to adapt to drought conditions. Transgenic Arabidopsis plants expressing MaRHD3 had roots with enhanced branching and more root hairs when challenged with drought stress. The MaRHD3 plants had higher biomass accumulation, higher relative water content, higher chlorophyll content and an increase in activity of reactive oxygen species (ROS) scavenging enzymes; SOD, CAT, GR, POD and APX with reduced water loss rates compared to control plants. The analysis of oxidative damage indicated lower cell membrane damage in transgenic lines compared to control plants. These findings, together with data from higher expression of ABF-3 and higher ABA content of drought-stressed transgenic MaRHD3 expressing plants, support the involvement of the ABA signal pathway and ROS scavenging enzyme systems in MaRHD3 mediated drought tolerance.
    MeSH terms: Abscisic Acid/metabolism; Chlorophyll/metabolism; Dehydration; Plant Growth Regulators/metabolism; Plant Proteins/genetics; Plant Proteins/metabolism; Plant Proteins/physiology; Arabidopsis; Reactive Oxygen Species/metabolism; Plant Roots/genetics; Plant Roots/metabolism; Musa/genetics; Musa/metabolism*; Musa/physiology; Plants, Genetically Modified; Real-Time Polymerase Chain Reaction
  9. Tan G, Khoo P, Chan K
    Ann R Coll Surg Engl, 2018 Oct 05;100(8):1-6.
    PMID: 30286634 DOI: 10.1308/rcsann.2018.0143
    INTRODUCTION: The development of thoracic endovascular aortic repair has altered the approach and reduced the risk of treating the majority of descending thoracic aortic conditions. Primarily developed for the exclusion of thoracic aortic aneurysms, it is now used in place of open repair surgery for most descending thoracic aortic diseases, and has also been used to treat aortic arch diseases in selected cases.

    METHODS: A literature search was conducted of Medline and Embase databases from January 2007 to February 2017, using the key words 'aortic disease', 'thoracic aorta' and 'endovascular repair'; 205 articles were identified, of which 25 studies were selected for review based on their relevance.

    FINDINGS: The key findings of the indications, techniques, outcomes, complications and comparisons with open surgical repair were extracted from the published studies and are summarised in this review. Thoracic endovascular aortic repair is the preferred choice of intervention for patients with descending thoracic aortic disease. With time, it has improved to be safer and has the potential to expand aortic treatment choices in future.

  10. Ilyas RA, Sapuan SM, Ishak MR, Zainudin ES
    Carbohydr Polym, 2018 Dec 15;202:186-202.
    PMID: 30286991 DOI: 10.1016/j.carbpol.2018.09.002
    Sugar palm fibre (SPF) was treated with NaClO2, bleached with NaOH and subsequently hydrolyzed with acid to obtain sugar palm nanocrystalline cellulose (SPNCCs). Bionanocomposites in the form of films were prepared by mixing sugar palm starch (SPS) and sorbitol/glycerol with different nanofiller SPNCCs compositions (0-1.0 wt%) using solution casting method. The resulting fibres and nanocomposites were characterized in terms of morphology (FESEM and TEM), footprint, crystallinity (XRD), light transmittance, biodegradability, physical, water barrier, thermal (TGA, DSC and DMA) and mechanical properties. The length (L), diameter (D) and L/D values of the SPNCCs were 130 ± 30.23, 8.5 ± 1.82 nm, and 15.3, respectively. The SPS/SPNCCs nanocomposite films exhibited higher crystallinity, tensile strength, Young's modulus, thermal and water-resistance compared to the neat SPS film. The results showed that the tensile strength and moduli of the bionanocomposites increased after being reinforced with SPNCCs and the optimum nanofiller content was 0.5%.
  11. Bukhari SNA, Roswandi NL, Waqas M, Habib H, Hussain F, Khan S, et al.
    Int J Biol Macromol, 2018 Dec;120(Pt B):1682-1695.
    PMID: 30287361 DOI: 10.1016/j.ijbiomac.2018.09.188
    Hyaluronic acid (HA) plays multifaceted role in regulating the various biological processes such as skin repairmen, diagnosis of cancer, wound healing, tissue regeneration, anti-inflammatory, and immunomodulation. Owing to its remarkable biomedical and tissue regeneration potential, HA has been numerously employed as one of the imperative components of the cosmetic and nutricosmetic products. The present review aims to summarize and critically appraise recent developments and clinical investigations on cosmetic and nutricosmetic efficacy of HA for skin rejuvenation. A thorough analysis of the literature revealed that HA based formulations (i.e., gels, creams, intra-dermal filler injections, dermal fillers, facial fillers, autologous fat gels, lotion, serum, and implants, etc.) exhibit remarkable anti-wrinkle, anti-nasolabial fold, anti-aging, space-filling, and face rejuvenating properties. This has been achieved via soft tissue augmentation, improved skin hydration, collagen and elastin stimulation, and face volume restoration. HA, alone or in combination with lidocaine and other co-agents, showed promising efficacy in skin tightness and elasticity, face rejuvenation, improving aesthetic scores, reducing the wrinkle scars, longevity, and tear trough rejuvenation. Our critical analysis evidenced that application/administration of HA exhibits outstanding nutricosmetic efficacy and thus is warranted to be used as a prime component of cosmetic products.
    MeSH terms: Animals; Cosmetics/pharmacology*; Humans; Hyaluronic Acid/pharmacology*; Rejuvenation*; Skin/drug effects*
  12. Yap WY, Hwang JS
    Molecules, 2018 Oct 04;23(10).
    PMID: 30287801 DOI: 10.3390/molecules23102537
    A group of stable, water-soluble and membrane-bound proteins constitute the pore forming toxins (PFTs) in cnidarians. They interact with membranes to physically alter the membrane structure and permeability, resulting in the formation of pores. These lesions on the plasma membrane causes an imbalance of cellular ionic gradients, resulting in swelling of the cell and eventually its rupture. Of all cnidarian PFTs, actinoporins are by far the best studied subgroup with established knowledge of their molecular structure and their mode of pore-forming action. However, the current view of necrotic action by actinoporins may not be the only mechanism that induces cell death since there is increasing evidence showing that pore-forming toxins can induce either necrosis or apoptosis in a cell-type, receptor and dose-dependent manner. In this review, we focus on the response of the cellular immune system to the cnidarian pore-forming toxins and the signaling pathways that might be involved in these cellular responses. Since PFTs represent potential candidates for targeted toxin therapy for the treatment of numerous cancers, we also address the challenge to overcoming the immunogenicity of these toxins when used as therapeutics.
    MeSH terms: Animals; Cell Membrane/chemistry; Cnidaria/immunology; Cnidaria/chemistry; Humans; Immunity, Innate/drug effects*; Necrosis/drug therapy; Necrosis/immunology*; Necrosis/pathology; Toxins, Biological/metabolism*; Toxins, Biological/chemistry; Signal Transduction/drug effects; Apoptosis/drug effects; Pore Forming Cytotoxic Proteins/immunology*; Pore Forming Cytotoxic Proteins/chemistry
  13. Zin CS, Nazar NI, Rahman NS, Alias NE, Ahmad WR, Rani NS, et al.
    J Pain Res, 2018;11:1959-1966.
    PMID: 30288090 DOI: 10.2147/JPR.S164774
    Purpose: To examine the trends of analgesic prescribing at public tertiary hospital outpatient settings and explore the patterns of their utilization in nonsteroidal anti-inflammatory drugs (NSAIDs), tramadol, and opioid patients.
    Patients and methods: This cross-sectional study was conducted from 2010 to 2016 using the prescription databases of two tertiary hospitals in Malaysia. Prescriptions for nine NSAIDs (ketoprofen, diclofenac, celecoxib, etoricoxib, ibuprofen, indomethacin, meloxicam, mefenamic acid, and naproxen), tramadol, and five other opioids (morphine, fentanyl, oxycodone, dihydrocodeine, and buprenorphine) were included in this study. Annual number of patients and prescriptions were measured in repeat cross-sectional estimates. Descriptive statistics and linear trend analysis were performed using Stata version 13.
    Results: A total of 192,747 analgesic prescriptions of the nine NSAIDs, tramadol, and five other opioids were given for 97,227 patients (51.8% NSAIDs patients, 46.6% tramadol patients, and 1.7% opioid patients) from 2010 to 2016. Tramadol (37.9%, n=72,999) was the most frequently prescribed analgesic, followed by ketoprofen (17.5%, n=33,793), diclofenac (16.2%, n=31,180), celecoxib (12.2%, n=23,487), and other NSAIDs (<4.5%). All the analgesics were increased over time except meloxicam, indomethacin, and mefenamic acid. Opioids, primarily morphine (2.2%, n=4,021) and oxycodone (0.5%, n=1,049), were prescribed the least, but the rate of increase was the highest.
    Conclusion: Tramadol was the most frequently prescribed analgesic in hospital outpatient settings in Malaysia. Opioids were prescribed the least, but noted the highest increase in utilization.
    Data source: Prescription databases of two public tertiary hospitals in Malaysia

    Study site: two public tertiary hospitals in Malaysia
    MeSH terms: Celecoxib; Analgesics, Opioid; Anti-Inflammatory Agents, Non-Steroidal; Buprenorphine; Codeine; Cross-Sectional Studies; Diclofenac; Fentanyl; Hospitals; Humans; Ibuprofen; Indomethacin; Ketoprofen; Malaysia; Mefenamic Acid; Morphine; Naproxen; Outpatient Clinics, Hospital; Outpatients; Oxycodone; Pyridines; Sulfones; Thiazines; Thiazoles; Tramadol; Tertiary Care Centers
  14. Ataie-Jafari A, Namazi N, Djalalinia S, Chaghamirzayi P, Abdar ME, Zadehe SS, et al.
    PMID: 30288175 DOI: 10.1186/s13098-018-0373-y
    Background: Recently, neck circumference (NC) has been used to predict the risk of cardiometabolic factors. This study aimed to perform a systematic review and meta-analysis to examine: (i) the sensitivity (SE) and specificity (SP) of NC to predict cardiometabolic risk factors and (ii) the association between NC and the risk of cardiometabolic parameters.

    Methods: A systematic search was conducted through PubMed/Medline, Institute of Scientific Information, and Scopus, until 2017 based on the search terms of metabolic syndrome (MetS) and cardio metabolic risk factors. Random-effect model was used to perform a meta-analysis and estimate the pooled SE, SP and correlation coefficient (CC).

    Results: A total of 41 full texts were selected for systematic review. The pooled SE of greater NC to predict MetS was 65% (95% CI 58, 72) and 77% (95% CI 55, 99) in adult and children, respectively. Additionally, the pooled SP was 66% (95% CI 60, 72) and 66% (95% CI 48, 84) in adult and children, respectively. According to the results of meta-analysis in adults, NC had a positive and significant correlation with fasting blood sugar (FBS) (CC: 0.16, 95% CI 0.13, 0.20), HOMA-IR (0.38, 95% CI 0.25, 0.50), total cholesterol (TC) (0.07 95% CI 0.02, 0.12), triglyceride (TG) concentrations (0.23, 95% CI 0.19, 0.28) and low density lipoprotein cholesterol (LDL-C) (0.14, 95% CI 0.07, 0.22). Among children, NC was positively associated with FBS (CC: 0.12, 95% CI 0.07, 0.16), TG (CC: 0.21, 95% CI 0.17, 0.25), and TC concentrations (CC: 0.07, 95% CI 0.02, 0.12). However, it was not significant for LDL-C.

    Conclusion: NC has a good predictive value to identify some cardiometabolic risk factors. There was a positive association between high NC and most cardiometabolic risk factors. However due to high heterogeneity, findings should be declared with caution.

    MeSH terms: Adult; Blood Glucose; Child; Fasting; Humans; Cholesterol, LDL; Risk Factors; Triglycerides; MEDLINE; PubMed
  15. Heng HL, Chee CF, Chin SP, Ouyang Y, Wang H, Buckle MJC, et al.
    Medchemcomm, 2018 03 01;9(3):593-594.
    PMID: 30288212 DOI: 10.1039/c8md90012d
    [This corrects the article DOI: 10.1039/C7MD00629B.].
    MeSH terms: Humans
  16. Pocock NS, Nguyen LH, Lucero-Prisno Iii DE, Zimmerman C, Oram S
    PMID: 30288452 DOI: 10.1186/s41256-018-0083-x
    Background: Little is known about the health of GMS commercial fishers and seafarers, many of whom are migrants and some trafficked. This systematic review summarizes evidence on occupational, physical, sexual and mental health and violence among GMS commercial fishers/seafarers.

    Methods: We searched 5 electronic databases and purposively searched grey literature. Quantitative or qualitative studies reporting prevalence or risk of relevant outcomes were included. Two reviewers independently screened articles. Data were extracted on nationality and long/short-haul fishing where available.

    Results: We identified 33 eligible papers from 27 studies. Trafficked fishers/seafarers were included in n=12/13 grey literature and n=1/20 peer-reviewed papers. Among peer-reviewed papers: 11 focused on HIV/AIDS/sexual health; nine on occupational/physical health; one study included mental health of trafficked fishers. Violence was quantitatively measured in eight papers with prevalence of: 11-26% in port convenience samples; 68-100% in post-trafficking service samples. Commercial fishers/seafarers whether trafficked or not worked extremely long hours; trafficked long-haul fishers had very limited access to care following injuries or illness. Lesser-known risks reported among fishers included penile oil injections and beriberi. We found just one work safety intervention study and inconclusive evidence for differences in the outcomes by nationality. Findings are limited by methodological weaknesses of primary studies.

    Conclusion: Results show an absence of high-quality epidemiological studies beyond sexual health. Formative and pilot intervention research on occupational, physical and mental health among GMS commercial fishers and seafarers is needed. Future studies should include questions about violence and exploitation. Ethical and reporting standards of grey literature should be improved.

    Trial Registration: Review registration number: PROSPERO 2014: CRD42014009656.
    MeSH terms: Acquired Immunodeficiency Syndrome; Beriberi; Ethnic Groups; Humans; Mental Health; Pilot Projects; Risk; Transients and Migrants; Violence; Prevalence; Epidemiologic Studies; Occupational Health; Qualitative Research
  17. Rizeei HM, Azeez OS, Pradhan B, Khamees HH
    Environ Monit Assess, 2018 Oct 04;190(11):633.
    PMID: 30288624 DOI: 10.1007/s10661-018-7013-8
    Groundwater hazard assessments involve many activities dealing with the impacts of pollution on groundwater, such as human health studies and environment modelling. Nitrate contamination is considered a hazard to human health, environment and ecosystem. In groundwater management, the hazard should be assessed before any action can be taken, particularly for groundwater pollution and water quality. Thus, pollution due to the presence of nitrate poses considerable hazard to drinking water, and excessive nutrient loads deteriorate the ecosystem. The parametric IPNOA model is one of the well-known methods used for evaluating nitrate content. However, it cannot predict the effect of soil and land use/land cover (LULC) types on calculations relying on parametric well samples. Therefore, in this study, the parametric model was trained and integrated with the multivariate data-driven model with different levels of information to assess groundwater nitrate contamination in Saladin, Iraq. The IPNOA model was developed with 185 different well samples and contributing parameters. Then, the IPNOA model was integrated with the logistic regression (LR) model to predict the nitrate contamination levels. Geographic information system techniques were also used to assess the spatial prediction of nitrate contamination. High-resolution SPOT-5 satellite images with 5 m spatial resolution were processed by object-based image analysis and support vector machine algorithm to extract LULC. Mapping of potential areas of nitrate contamination was examined using receiver operating characteristic assessment. Results indicated that the optimised LR-IPNOA model was more accurate in determining and analysing the nitrate hazard concentration than the standalone IPNOA model. This method can be easily replicated in other areas that have similar climatic condition. Therefore, stakeholders in planning and environmental decision makers could benefit immensely from the proposed method of this research, which can be potentially used for a sustainable management of urban, industrialised and agricultural sectors.
    MeSH terms: Environmental Monitoring/methods; Iraq; Nitrates/analysis*; Water Pollutants, Chemical/analysis*; Multivariate Analysis; Logistic Models; Geographic Information Systems; Groundwater/analysis; Groundwater/chemistry*; Water Quality*; Drinking Water/analysis; Drinking Water/chemistry
  18. Zuther E, Lee YP, Erban A, Kopka J, Hincha DK
    Adv Exp Med Biol, 2018 10 6;1081:81-98.
    PMID: 30288705 DOI: 10.1007/978-981-13-1244-1_5
    During low-temperature exposure, temperate plant species increase their freezing tolerance in a process termed cold acclimation. The molecular mechanisms involved in cold acclimation have been mostly investigated in Arabidopsis thaliana. In addition, other Brassicaceae species related to A. thaliana have been employed in recent years to study plant stress responses on a phylogenetically broader basis and in some cases with extremophile species with a much higher stress tolerance. In this paper, we briefly summarize cold acclimation responses in A. thaliana and current knowledge about cold acclimation in A. thaliana relatives with special emphasis on Eutrema salsugineum and two closely related Thellungiella species. We then present a transcriptomic and metabolomic analysis of cold acclimation in five A. thaliana and two E. salsugineum accessions that differ widely in their freezing tolerance. Differences in the cold responses of the two species are discussed.
    MeSH terms: Acclimatization; Cold Temperature; Freezing; Temperature; Arabidopsis; Brassicaceae; Arabidopsis Proteins; Metabolomics; Transcriptome; Extremophiles
  19. Li L, An J, Zhou M, Qiao L, Zhu S, Yan R, et al.
    Environ Sci Technol, 2018 Dec 18;52(24):14216-14227.
    PMID: 30288976 DOI: 10.1021/acs.est.8b01211
    An integrated source apportionment methodology is developed by amalgamating the receptor-oriented model (ROM) and source-oriented numerical simulations (SOM) together to eliminate the weaknesses of individual SA methods. This approach attempts to apportion and dissect the PM2.5 sources in the Yangtze River Delta region during winter. First, three ROM models (CMB, PMF, ME2) are applied and compared for the preliminary SA results, with information from PM2.5 sampling and lab analysis during the winter seasons. The detailed source category contribution of SOM to PM2.5 is further simulated using the WRF-CAMx model. The two pieces of information from both ROM and SOM are then stitched together to give a comprehensive information on the PM2.5 sources over the region. With the integrated approach, the detailed contributing sources of the ambient PM2.5 at different receptors including rural and urban, coastal and in-land, northern and southern receptors are analyzed. The results are compared with previous data and shows good agreement. This integrative approach is more comprehensive and is able to produce a more profound and detailed understanding between the sources and receptors, compared with single models.
    MeSH terms: Air Pollutants; Seasons; Rivers; Particulate Matter
  20. Razak SAA, Murad NAA, Masra F, Chong DLS, Abdullah N, Jalil N, et al.
    Curr Mol Med, 2018;18(5):295-305.
    PMID: 30289070 DOI: 10.2174/1566524018666181004121604
    BACKGROUND: The phenotypic severity of β-thalassemia is highly modulated by three genetic modifiers: β-globin (HBB) mutations, co-inheritance of α-thalassemia and polymorphisms in the genes associated with fetal haemoglobin (HbF) production. This study was aimed to evaluate the effect of HbF related polymorphisms mainly in the HBB cluster, BCL11A (B-cell CLL/lymphoma 11A) and HBS1L-MYB (HBS1-like translational GTPase-MYB protooncogene, transcription factor) with regards to clinical severity.

    METHODS: A total of 149 patients were included in the study. HBA and HBB mutations were characterised using multiplex PCR, Sanger sequencing and multiplex ligationdependent probe amplification. In addition, 35 HbF polymorphisms were genotyped using mass spectrometry and PCR-restriction fragment length polymorphism (PCRRFLP). The genotype-phenotype association was analysed using SPSS version 22.

    RESULTS: Twenty-one HBB mutations were identified in the study population. Patients with HBB mutations had heterogeneous phenotypic severity due to the presence of other secondary modifiers. Co-inheritance of α-thalassemia (n = 12) alleviated disease severity of β-thalassemia. In addition, three polymorphisms (HBS1LMYB, rs4895441 [P = 0.008, odds ratio (OR) = 0.38 (0.18, 0.78)], rs9376092 [P = 0.030, OR = 0.36 (0.14, 0.90)]; and olfactory receptor [OR51B2] rs6578605 [P = 0.018, OR = 0.52 (0.31, 0.89)]) were associated with phenotypic severity. Secondary analysis of the association between single-nucleotide polymorphisms with HbF levels revealed three nominally significant SNPs: rs6934903, rs9376095 and rs9494149 in HBS1L-MYB.

    CONCLUSION: This study revealed 3 types of HbF polymorphisms that play an important role in ameliorating disease severity of β-thalassemia patients which may be useful as a predictive marker in clinical management.

    MeSH terms: Adolescent; Adult; Child; Female; Fetal Hemoglobin/genetics*; Multigene Family*; Humans; Male; beta-Thalassemia/genetics*; GTP-Binding Proteins/genetics*; Proto-Oncogene Proteins c-myb/genetics*; Polymorphism, Single Nucleotide*
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