Browse publications by year: 2018

  1. Aburas MM, Ho YM, Ramli MF, Ash'aari ZH
    Environ Monit Assess, 2018 Feb 20;190(3):156.
    PMID: 29464400 DOI: 10.1007/s10661-018-6522-9
    The identification of spatio-temporal patterns of the urban growth phenomenon has become one of the most significant challenges in monitoring and assessing current and future trends of the urban growth issue. Therefore, spatio-temporal and quantitative techniques should be used hand in hand for a deeper understanding of various aspects of urban growth. The main purpose of this study is to monitor and assess the significant patterns of urban growth in Seremban using a spatio-temporal built-up area analysis. The concentric circles approach was used to measure the compactness and dispersion of built-up area by employing Shannon's Entropy method. The spatial directions approach was also utilised to measure the sustainability and speed of development, while the gradient approach was used to measure urban dynamics by employing landscape matrices. The overall results confirm that urban growth in Seremban is dispersed, unbalanced and unsustainable with a rapid speed of regional development. The main contribution of using existing methods with other methods is to provide several spatial and statistical dimensions that can help researchers, decision makers and local authorities understand the trend of growth and its patterns in order to take the appropriate decisions for future urban planning. For example, Shannon's Entropy findings indicate a high value of dispersion between the years 1990 and 2000 and from 2010 to 2016 with a growth rate of approximately 94 and 14%, respectively. Therefore, these results can help and support decision makers to implement alternative urban forms such as the compactness form to achieve an urban form that is more suitable and sustainable. The results of this study confirm the importance of using spatio-temporal built-up area and quantitative analysis to protect the sustainability of land use, as well as to improve the urban planning system via the effective monitoring and assessment of urban growth trends and patterns.
    MeSH terms: City Planning*; Environmental Monitoring/methods; Humans; Malaysia; Population Growth; Geographic Information Systems; Spatio-Temporal Analysis
  2. Masron TA, Subramaniam Y
    Environ Sci Pollut Res Int, 2018 May;25(13):12491-12506.
    PMID: 29464597 DOI: 10.1007/s11356-018-1473-9
    Environmental degradation is at an alarming level in developing economies. The present paper examines the direct and indirect impacts of corruption on environmental deterioration using the panel data of 64 developing countries. Adopting the generalized method of moments (GMM) technique, the paper finds evidence that corruption exhibits a positive impact on pollution. Subsequently, there is also evidence indicating that the level of pollution tends to be higher in countries with a higher level of corruption, eliminating the effectiveness of income effect on environmental preservation. These results also suggest that environmental degradation is monotonically increasing with higher corruption and invalidate the presence of the EKC. Hence, a policy focuses that an anti-corruption particularly in the environmental and natural resources sector needs to be emphasized and enforced in order to reduce or possibly to totally eliminate the rent for corruption.
    MeSH terms: Crime/statistics & numerical data*; Developing Countries/statistics & numerical data*; Environmental Pollution/economics*; Environmental Pollution/statistics & numerical data; Politics; Models, Economic; Economic Development/statistics & numerical data*
  3. Mai CW, Kang YB, Nadarajah VD, Hamzah AS, Pichika MR
    Phytother Res, 2018 Jun;32(6):1108-1118.
    PMID: 29464796 DOI: 10.1002/ptr.6051
    In this study, a series of 20 structurally similar vanilloids (Vn) were tested for their antiproliferative effects against 12 human cancer cells: human breast (MCF-7 and MDA-MB-231), cervical (HeLa), ovarian (Caov-3), lung (A549), liver (HepG2), colorectal (HT-29 and HCT116), nasopharyngeal (CNE-1 and HK-1), and leukemic (K562 and CEM-SS) cancer cells. Among all the tested vanilloids, Vn16 (6-shogaol) exhibited the most potent cytotoxic effects against human colorectal cancer cells (HT-29). The apoptotic induction effects exhibited by Vn16 on HT-29 cells were confirmed using dual staining fluorescence microscopy and enzyme-linked immunosorbent assay. The effects of Vn16 on regulation of 43 apoptotic-related markers were determined in HT-29. The results suggested that 8 apoptotic markers (caspase 8, BAD, BAX, second mitochondrial-derived activator, caspase 3, survivin, bcl-2, and cIAP-2) were either upregulated or downregulated. These results further support the chemopreventive properties of foods that contain vanilloids.
    MeSH terms: Antineoplastic Agents/pharmacology; Antineoplastic Agents/therapeutic use*; Humans; Apoptosis; Proto-Oncogene Proteins c-bcl-2/metabolism*; Cell Line, Tumor; Cell Proliferation; TRPV Cation Channels/pharmacology; TRPV Cation Channels/therapeutic use*; Inhibitor of Apoptosis Proteins/metabolism*
  4. Zakaria NNA, Okello EJ, Howes MJ, Birch-Machin MA, Bowman A
    Phytother Res, 2018 Jun;32(6):1064-1072.
    PMID: 29464849 DOI: 10.1002/ptr.6045
    The traditional practice of eating the flowers of Clitoria ternatea L. or drinking their infusion as herbal tea in some of the Asian countries is believed to promote a younger skin complexion and defend against skin aging. This study was conducted to investigate the protective effect of C. ternatea flower water extract (CTW) against hydrogen peroxide-induced cytotoxicity and ultraviolet (UV)-induced mitochondrial DNA (mtDNA) damage in human keratinocytes. The protective effect against hydrogen peroxide-induced cytotoxicity was determined by 3-(4, 5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium assay, and mtDNA damage induced by UV was determined by polymerase chain reaction. Preincubation of HaCaT with 100, 250, and 500 μg/ml CTW reduced cytotoxicity effects of H2 O2 compared with control (H2 O2 alone). CTW also significantly reduced mtDNA damage in UV-exposed HaCaT (p 
    MeSH terms: Antioxidants/pharmacology; Antioxidants/therapeutic use*; DNA, Mitochondrial/adverse effects*; Humans; Hydrogen Peroxide/analysis; Hydrogen Peroxide/metabolism*; Plant Extracts/chemistry*; Keratinocytes/drug effects*; Clitoria/chemistry*
  5. Karim A, Yousuf A, Islam MA, Naif YH, Faizal CKM, Alam MZ, et al.
    Biotechnol Prog, 2018 07;34(4):838-845.
    PMID: 29464927 DOI: 10.1002/btpr.2625
    The aim of the study was to investigate the feasibility of using irreversible electroporation (EP) as a microbial cell disruption technique to extract intracellular lipid within short time and in an eco-friendly manner. An EP circuit was designed and fabricated to obtain 4 kV with frequency of 100 Hz of square waves. The yeast cells of Lipomyces starkeyi (L. starkeyi) were treated by EP for 2-10 min where the distance between electrodes was maintained at 2, 4, and 6 cm. Colony forming units (CFU) were counted to observe the cell viability under the high voltage electric field. The forces of the pulsing electric field caused significant damage to the cell wall of L. starkeyi and the disruption of microbial cells was visualized by field emission scanning electron microscopic (FESEM) image. After breaking the cell wall, lipid was extracted and measured to assess the efficiency of EP over other techniques. The extent of cell inactivation was up to 95% when the electrodes were placed at the distance of 2 cm, which provided high treatment intensity (36.7 kWh m-3 ). At this condition, maximum lipid (63 mg g-1 ) was extracted when the biomass was treated for 10 min. During the comparison, EP could extract 31.88% lipid while the amount was 11.89% for ultrasonic and 16.8% for Fenton's reagent. The results recommend that the EP is a promising technique for lowering the time and solvent usage for lipid extraction from microbial biomass. © 2018 American Institute of Chemical Engineers Biotechnol. Prog., 34:838-845, 2018.
    MeSH terms: Flagellin/metabolism; Humans; Lipids/chemistry; Tissue Plasminogen Activator/metabolism; Electroporation/methods*; Biomass; Toll-Like Receptors/metabolism; Lipomyces/metabolism*
  6. Ahmad MF, Sheng KL, Kathirgamanathan S, Kannaiah K
    Minerva Ginecol, 2018 10;70(5):644-645.
    PMID: 29464941 DOI: 10.23736/S0026-4784.18.04183-7
    MeSH terms: Adult; Female; Humans; Leiomyoma/pathology; Leiomyoma/surgery*; Malaysia; Laparoscopy/methods*; Retrospective Studies; Uterine Neoplasms/pathology; Uterine Neoplasms/surgery*; Cohort Studies; Uterine Myomectomy/methods*
  7. Khoo S, Li C, Ansari P
    Percept Mot Skills, 2018 Jun;125(3):525-545.
    PMID: 29465009 DOI: 10.1177/0031512518760350
    Despite increasing publications in disability sport, no bibliometric analysis has been conducted to evaluate their impact.We conducted a systematic search of theWeb of Science Core Collection citation index on June 26, 2017 for publications published since 1980 to identify the top 50 most cited publications in disability sport. The top 50 cited publications were mainly articles and reviews published in the English language between 1993 and 2014. Most of the 148 authors who contributed to these publications were based in Europe and North America. The majority of the publications can be categorized as sociological and psychological as well as training and competition effects. The most researched events were the Paralympics and Special Olympics. These top-cited publications have contributed to the development of disability sport research.
    MeSH terms: Adult; Disabled Persons*; Humans; Sports*; Bibliometrics*; Athletes*
  8. Pindus DM, Mullis R, Lim L, Wellwood I, Rundell AV, Abd Aziz NA, et al.
    PLoS One, 2018;13(2):e0192533.
    PMID: 29466383 DOI: 10.1371/journal.pone.0192533
    OBJECTIVE: To describe and explain stroke survivors and informal caregivers' experiences of primary care and community healthcare services. To offer potential solutions for how negative experiences could be addressed by healthcare services.

    DESIGN: Systematic review and meta-ethnography.

    DATA SOURCES: Medline, CINAHL, Embase and PsycINFO databases (literature searched until May 2015, published studies ranged from 1996 to 2015).

    ELIGIBILITY CRITERIA: Primary qualitative studies focused on adult community-dwelling stroke survivors' and/or informal caregivers' experiences of primary care and/or community healthcare services.

    DATA SYNTHESIS: A set of common second order constructs (original authors' interpretations of participants' experiences) were identified across the studies and used to develop a novel integrative account of the data (third order constructs). Study quality was assessed using the Critical Appraisal Skills Programme checklist. Relevance was assessed using Dixon-Woods' criteria.

    RESULTS: 51 studies (including 168 stroke survivors and 328 caregivers) were synthesised. We developed three inter-dependent third order constructs: (1) marginalisation of stroke survivors and caregivers by healthcare services, (2) passivity versus proactivity in the relationship between health services and the patient/caregiver dyad, and (3) fluidity of stroke related needs for both patient and caregiver. Issues of continuity of care, limitations in access to services and inadequate information provision drove perceptions of marginalisation and passivity of services for both patients and caregivers. Fluidity was apparent through changing information needs and psychological adaptation to living with long-term consequences of stroke.

    LIMITATIONS: Potential limitations of qualitative research such as limited generalisability and inability to provide firm answers are offset by the consistency of the findings across a range of countries and healthcare systems.

    CONCLUSIONS: Stroke survivors and caregivers feel abandoned because they have become marginalised by services and they do not have the knowledge or skills to re-engage. This can be addressed by: (1) increasing stroke specific health literacy by targeted and timely information provision, and (2) improving continuity of care between specialist and generalist services.

    SYSTEMATIC REVIEW REGISTRATION NUMBER: PROSPERO 2015:CRD42015026602.

    MeSH terms: Anthropology, Cultural; Attitude*; Community Health Services*; Humans; Primary Health Care*; Caregivers/psychology*; Survivors*; Stroke/nursing*; Stroke/psychology*
  9. Anasdass JR, Kannaiyan P, Raghavachary R, Gopinath SCB, Chen Y
    PLoS One, 2018;13(2):e0193281.
    PMID: 29466453 DOI: 10.1371/journal.pone.0193281
    We present a biogenic method for the synthesis of palladium nanoparticle (PdNP)-modified by reducing graphene oxide sheets (rGO) in a one-pot strategy using Ficus carica fruit juice as the reducing agent. The synthesized material was well characterized by morphological and structural analyses, including, Ultraviolet-Visible spectroscopy (UV-Vis), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and Transmission Electron Microscopy (TEM) and Raman spectroscopy. The results revealed that the PdNP modified GO are spherical in shape and estimated to be a dimension of ~0.16 nm. The PdNP/graphene exhibits a great catalytic activity in Suzuki cross-coupling reactions for the synthesis of biaryl compounds with various substrates under both aqueous and aerobic conditions. The catalyst can be recovered easily and is suitable for repeated use because it retains its original catalytic activity. The PdNP/rGO catalyst synthesized by an eco-friendly protocol was used for the Suzuki coupling reactions. The method offers a mild and effective substitute to the existing methods and may significantly contribute to green chemistry.
    MeSH terms: Catalysis; Fruit/chemistry*; Graphite/chemistry*; Palladium/chemistry*; Fucus/chemistry*; Metal Nanoparticles/ultrastructure; Metal Nanoparticles/chemistry*
  10. Cheong AM, Tan CP, Nyam KL
    Food Sci Technol Int, 2018 Jul;24(5):404-413.
    PMID: 29466882 DOI: 10.1177/1082013218760882
    Kenaf ( Hibiscus cannabinus L.) seed oil has been proven for its multi-pharmacological benefits; however, its poor water solubility and stability have limited its industrial applications. This study was aimed to further improve the stability of pre-developed kenaf seed oil-in-water nanoemulsions by using food-grade ternary emulsifiers. The effects of emulsifier concentration (1, 5, 10, 15% w/w), homogenisation pressure (16,000, 22,000, 28,000 psi), and homogenisation cycles (three, four, five cycles) were studied to produce high stability of kenaf seed oil-in-water nanoemulsions using high pressure homogeniser. Generally, results showed that the emulsifier concentration and homogenisation conditions had great effect ( p 
    MeSH terms: Drug Stability; Emulsions/chemistry*; Food Handling/methods; Hot Temperature; Microscopy, Electron, Scanning; Particle Size; Plant Oils/chemistry*; Pressure; Seeds/chemistry*; Solubility; Water/chemistry*; Hibiscus*; Nanotechnology; Emulsifying Agents*
  11. Reginald K, Chew FT
    Sci Rep, 2018 02 21;8(1):3391.
    PMID: 29467434 DOI: 10.1038/s41598-018-21792-1
    Epitope mapping of Der p 2, a clinically important dust-mite allergen is the first step in designing immunotherapy hypoallergen vaccine candidates. Twenty-one single alanine mutants of Der p 2 were generated and their secondary structure was analysed using circular dichroism spectra. Only one mutant, K96A resulted in a misfolded protein. All mutants were tested for serum IgE reactivity using serum from dust mite allergic individuals by immuno dot-blots. Mutations to five residues, N10, E25, K77, K96 and E102 consistently showed reduced IgE reactions compared to wild-type Der p 2, and therefore these residues constitute the major IgE epitopes of Der p 2. Two mutants with consistent low IgE binding, K96A and E102A, were subsequently evaluated as hypoallergen candidates. IgG antibodies raised in mice against both mutants could inhibit human IgE-binding to WT Der p 2. Both mutants had intact T-cell epitopes as they were able to stimulate peripheral blood mononuclear cell proliferation similar to WT Der p 2. However, a switch in Th1:Th2 cytokine profile was not observed. In summary, we have identified the major conformational epitopes of Der p 2, and evaluated two Der p 2 hypoallergen vaccine candidates for immunotherapy.
    MeSH terms: Allergens/immunology*; Animals; Epitopes/immunology*; Female; Humans; Immunoglobulin E/immunology*; Immunoglobulin G/immunology; Immunotherapy/methods; Leukocytes, Mononuclear/immunology; Mice, Inbred BALB C; T-Lymphocytes/immunology; Vaccines/immunology; Cytokines/immunology; Epitope Mapping/methods; Antigens, Dermatophagoides/immunology*; Mice; Arthropod Proteins/immunology*
  12. Yeganeh Ghotbi M, Javanmard A, Soleimani H
    Sci Rep, 2018 02 21;8(1):3404.
    PMID: 29467510 DOI: 10.1038/s41598-018-21782-3
    A layered nanoreactor (zinc hydroxide gallate/nitrate nanohybrid) has been designed as a nano-vessel to confine the gallate/nitrate reaction inside zinc hydroxide layers for production of metal/nitrogen-doped carbon catalysts. Metals (Fe2+, Co2+ and Ni2+) doped and bare zinc hydroxide nitrates (ZHN) were synthesized as the α-phase hydroxide hosts. By an incomplete ion-exchange process, nitrate anions between the layers of the hosts were then partially replaced by the gallate anions to produce the layered nanoreactors. Under heat-treatment, the reaction between the remaining un-exchanged nitrate anions and the organic moiety inside the basal spacing of each nanohybrid plate resulted in obtaining highly porous 3D metal/nitrogen-doped carbon nanosheets. These catalysts were then used as extremely efficient electrocatalysts for catalyzing oxygen reduction reaction (ORR). This study is intended to show the way to get maximum electrocatalytic activity of the metal/N-doped carbon catalysts toward the ORR. This exceptionally high ORR performance originates from the increased available surface, the best pore size range and the uniform distribution of the active sites in the produced catalysts, all provided by the use of new idea of the layered nanoreactor.
    MeSH terms: Carbon; Hot Temperature; Hydroxides; Metals; Nitrates; Nitrogen; Oxygen; Porosity; Zinc Compounds; Catalytic Domain
  13. Bhawani SA, Sen TS, Ibrahim MNM
    Chem Cent J, 2018 Feb 21;12(1):19.
    PMID: 29468431 DOI: 10.1186/s13065-018-0392-7
    The molecularly imprinted polymers for gallic acid were synthesized by precipitation polymerization. During the process of synthesis a non-covalent approach was used for the interaction of template and monomer. In the polymerization process, gallic acid was used as a template, acrylic acid as a functional monomer, ethylene glycol dimethacrylate as a cross-linker and 2,2'-azobisisobutyronitrile as an initiator and acetonitrile as a solvent. The synthesized imprinted and non-imprinted polymer particles were characterized by using Fourier-transform infrared spectroscopy and scanning electron microscopy. The rebinding efficiency of synthesized polymer particles was evaluated by batch binding assay. The highly selective imprinted polymer for gallic acid was MIPI1 with a composition (molar ratio) of 1:4:20, template: monomer: cross-linker, respectively. The MIPI1 showed highest binding efficiency (79.50%) as compared to other imprinted and non-imprinted polymers. The highly selective imprinted polymers have successfully extracted about 80% of gallic acid from spiked urine sample.
  14. Thu HE, Hussain Z, Mohamed IN, Shuid AN
    Curr Drug Targets, 2018;19(14):1657-1671.
    PMID: 29468964 DOI: 10.2174/1389450119666180219123815
    BACKGROUND: Eurycoma longifolia (E. longifolia) has gained widespread recognition due to its versatile pharmacological activities including aphrodisiac, anticancer, antimicrobial, antioxidant, anti-inflammatory, anxiolytic, anti-diabetic, ergogenic, insecticidal, anti-rheumatism, bone protection, and anti-ulcer effects.

    OBJECTIVE: This review was aimed to critically overview the literature and summarizes the antibacterial, antiprotozoal, and antifungal trends of E. longifolia and its medicinally active components.

    RESULTS: Besides its well-documented safety, efficacy, and tolerability, a plethora of in vitro, in vivo, and human clinical studies has evidenced the antimicrobial efficacy of E. longifolia and its bioactive constituents. Phytochemical screening of various types of extracts (methanolic, ethyl acetate, and nbutanolic) from different parts (roots, stem, and leaves) of E. longifolia displayed a dose-dependent antibacterial, antiprotozoal, and antifungal responses. Comparative analysis revealed that the root extract of E. longifolia exhibited the highest antimicrobial efficacy compared to other parts of the plant. Bioactivity-guided fractionation identified that among all of the medicinal compounds isolated/ extracted from different parts of E. longifolia, eurycomanone displayed the strongest antibacterial, antiprotozoal and antifungal activities.

    CONCLUSION: Based on the critical analysis of the literature, we identified that E. longifolia exhibits promising antibacterial, antiprotozoal, and antifungal efficacies against various pathogenic microbes and thus can be considered as a potential complementary and alternative antimicrobial therapy.

    MeSH terms: Anti-Bacterial Agents/pharmacology; Anti-Bacterial Agents/chemistry; Antifungal Agents/pharmacology; Antifungal Agents/chemistry; Antiprotozoal Agents/pharmacology; Antiprotozoal Agents/chemistry; Plant Leaves/chemistry; Plant Roots/chemistry; Plant Stems/chemistry; Eurycoma/chemistry*; Phytochemicals/pharmacology*; Phytochemicals/chemistry*
  15. Iradukunda C, Aida WMW, Ouafi AT, Barkouch Y, Boussaid A
    J Dairy Res, 2018 Feb;85(1):114-120.
    PMID: 29468995 DOI: 10.1017/S0022029917000796
    MeSH terms: Animals; Butter/analysis*; Cattle; Fermentation; Food Analysis; Food Preferences; Odors; Volatile Organic Compounds
  16. Mienda BS, Salihu R, Adamu A, Idris S
    Future Microbiol, 2018 03;13:455-467.
    PMID: 29469596 DOI: 10.2217/fmb-2017-0195
    The growing number of multidrug-resistant pathogenic bacteria is becoming a world leading challenge for the scientific community and for public health. However, advances in high-throughput technologies and whole-genome sequencing of bacterial pathogens make the construction of bacterial genome-scale metabolic models (GEMs) increasingly realistic. The use of GEMs as an alternative platforms will expedite identification of novel unconditionally essential genes and enzymes of target organisms with existing and forthcoming GEMs. This approach will follow the existing protocol for construction of high-quality GEMs, which could ultimately reduce the time, cost and labor-intensive processes involved in identification of novel antimicrobial drug targets in drug discovery pipelines. We discuss the current impact of existing GEMs of selected multidrug-resistant pathogenic bacteria for identification of novel antimicrobial drug targets and the challenges of closing the gap between genome-scale metabolic modeling and conventional experimental trial-and-error approaches in drug discovery pipelines.
    MeSH terms: Anti-Bacterial Agents*; Bacteria/drug effects; Bacteria/genetics*; Bacteria/metabolism; Genes, Bacterial; Humans; Models, Biological*; Drug Delivery Systems; Genome, Bacterial/genetics*; Genomics; Metabolic Networks and Pathways/genetics*; Drug Discovery
  17. Chay SY, Salleh A, Sulaiman NF, Zainal Abidin N, Hanafi MA, Zarei M, et al.
    Food Funct, 2018 Mar 01;9(3):1657-1671.
    PMID: 29469915 DOI: 10.1039/c7fo01769c
    Winged bean seed (WBS) is an underutilized tropical crop. The current study evaluates its potential to reduce blood pressure (BP) in spontaneously hypertensive rats and finds that it reduces BP significantly, in a dose-dependent manner. Five peptides with the sequences, RGVFPCLK, TQLDLPTQ, EPALVP, MRSVVT and DMKP, have been characterized in terms of their stability against ACE via in vitro and in silico modelling. All peptides exhibited IC50 values between 0.019 and 6.885 mM and various inhibitory modes, including substrate, prodrug and true inhibitor modes. The toxicity status of non-Current Good Manufacturing Practice (non-CGMP) peptides is evaluated and the results show that such peptides are toxic, and thus are not suitable to be tested in animals, particularly in repeated-dose studies. In short, WBS hydrolysate demonstrated in vitro ACE inhibitory properties and in vivo blood pressure lowering efficacy in rat models, fostering its potential as a functional food ingredient. Non-CGMP grade peptides are toxic and unfit for testing in animal models.
    MeSH terms: Angiotensin-Converting Enzyme Inhibitors/administration & dosage; Angiotensin-Converting Enzyme Inhibitors/adverse effects; Angiotensin-Converting Enzyme Inhibitors/chemistry; Animals; Antihypertensive Agents/administration & dosage*; Antihypertensive Agents/adverse effects; Antihypertensive Agents/chemistry*; Blood Pressure/drug effects; Female; Humans; Hypertension/drug therapy*; Hypertension/enzymology; Hypertension/physiopathology; Fabaceae/chemistry*; Male; Peptide Mapping; Peptides/administration & dosage*; Peptides/adverse effects; Peptides/chemistry*; Plant Extracts/administration & dosage*; Plant Extracts/adverse effects; Plant Extracts/chemistry*; Protein Hydrolysates/chemistry; Rats, Inbred SHR; Renin/metabolism; Seeds/chemistry; Rats, Sprague-Dawley; Rats; Molecular Docking Simulation
  18. Kuan WS, Craig S, Kelly AM, Keijzers G, Klim S, Graham CA, et al.
    Clin Respir J, 2018 Jun;12(6):2117-2125.
    PMID: 29469993 DOI: 10.1111/crj.12782
    INTRODUCTION: Shortness of breath is a common presenting symptom to the emergency department (ED) that can arise from a myriad of possible diagnoses. Asthma is one of the major causes.

    OBJECTIVE: The aim of this study was to describe the demographic features, clinical characteristics, management and outcomes of adults with an ED diagnosis of asthma who presented to an ED in the Asia Pacific region with a principal symptom of dyspnea.

    METHODS: Planned sub-study of patients with an ED diagnosis of asthma identified in the Asia, Australia and New Zealand Dyspnoea in Emergency Departments (AANZDEM) study. AANZDEM was a prospective cohort study conducted in 46 EDs in Australia, New Zealand, Singapore, Hong Kong and Malaysia over three 72 hour periods in May, August and October 2014. Primary outcomes were patient epidemiology, clinical features, treatment and outcomes (hospital length of stay (LOS) and mortality).

    RESULTS: Of the 3044 patients with dyspnea, 387 (12.7%) patients had an ED diagnosis of asthma. The median age was 45 years, 60.1% were female, 16.1% were active or recent smokers and 30.4% arrived by ambulance. Inhaled bronchodilator therapy was initiated in 88.1% of patients, and 66.9% received both inhaled bronchodilators and systemic corticosteroids. After treatment in the ED, 65.4% were discharged. No death was reported.

    CONCLUSION: Asthma is common among patients presenting with a principal symptom of dyspnea in the ED of the Asia Pacific region. There was a suboptimal adherence to international guidelines on investigations and treatments of acute asthma exacerbations presenting an opportunity to improve the efficiency of care.

    MeSH terms: Adolescent; Adult; Aged; Asthma/complications; Asthma/epidemiology*; Asthma/therapy; Australia/epidemiology; Dyspnea/complications*; Dyspnea/etiology; Dyspnea/epidemiology; Emergency Service, Hospital/statistics & numerical data*; Female; Follow-Up Studies; Hong Kong/epidemiology; Hospitalization/trends; Humans; Malaysia/epidemiology; Male; Middle Aged; New Zealand/epidemiology; Prospective Studies; Singapore/epidemiology; Incidence; Young Adult
  19. Scott EM, Bilous RW, Kautzky-Willer A
    Diabetes Technol Ther, 2018 03;20(3):180-188.
    PMID: 29470094 DOI: 10.1089/dia.2017.0386
    BACKGROUND: Accuracy of the FreeStyle Libre™ Flash Glucose Monitoring System has not been evaluated in pregnant women with diabetes. The aim of this study was to determine accuracy (compared to self-monitoring of blood glucose [SMBG]), clinical safety, and acceptability of the FreeStyle Libre System when used at home by this population.

    MATERIALS AND METHODS: Seventy-four participants, with type 1 (T1D, n = 24), type 2 (T2D, n = 11), or gestational (n = 39) diabetes, were enrolled across 13 sites (9 in United Kingdom, 4 in Austria). Average gestation was 26.6 ± 6.8 weeks (mean ± standard deviation), age was 30.5 ± 5.1 years, diabetes duration was 13.1 ± 7.3 years for T1D and 3.2 ± 2.5 years for T2D, and 49/74 (66.2%) used insulin to manage their diabetes. Sensors were worn for up to 14 days. Sensor glucose values (masked) were compared with capillary SMBG values (made at least 4 times/day).

    RESULTS: Clinical accuracy of sensor results versus SMBG results was demonstrated, with 88.1% and 99.8% of results within Zone A and Zones A and B of the Consensus Error Grid, respectively. Overall mean absolute relative difference was 11.8%. Sensor accuracy was unaffected by the type of diabetes, the stage of pregnancy, whether insulin was used, age or body mass index. User questionnaires indicated high levels of satisfaction with sensor wear, system use, and comparison to SMBG. There were no unanticipated device-related adverse events.

    CONCLUSIONS: Good agreement was demonstrated between the FreeStyle Libre System and SMBG. Accuracy of the system was unaffected by patient characteristics, indicating that the system is safe and accurate to use by pregnant women with diabetes.

    MeSH terms: Adult; Blood Glucose/analysis*; Diabetes Mellitus, Type 1/blood*; Diabetes Mellitus, Type 1/drug therapy; Diabetes Mellitus, Type 2/blood*; Diabetes Mellitus, Type 2/drug therapy; Female; Humans; Hypoglycemic Agents/therapeutic use; Insulin/therapeutic use; Insulin Infusion Systems; Pregnancy; Pregnancy in Diabetics/blood*; Pregnancy in Diabetics/drug therapy; Sensitivity and Specificity; Blood Glucose Self-Monitoring/adverse effects*; Diabetes, Gestational/blood*; Diabetes, Gestational/drug therapy
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