Browse publications by year: 2017

  1. Plumpton C, Hughes D
    Br J Dermatol, 2017 10;177(4):904-905.
    PMID: 29052888 DOI: 10.1111/bjd.15832
    MeSH terms: Cost-Benefit Analysis*; Humans; Malaysia; HLA-B Antigens*
  2. Sirunyan AM, Tumasyan A, Adam W, Asilar E, Bergauer T, Brandstetter J, et al.
    Phys Rev Lett, 2017 Oct 06;119(14):141802.
    PMID: 29053305 DOI: 10.1103/PhysRevLett.119.141802
    A search for charged Higgs bosons produced via vector boson fusion and decaying into W and Z bosons using proton-proton collisions at sqrt[s]=13  TeV is presented. The data sample corresponds to an integrated luminosity of 15.2  fb^{-1} collected with the CMS detector in 2015 and 2016. The event selection requires three leptons (electrons or muons), two jets with large pseudorapidity separation and high dijet mass, and missing transverse momentum. The observation agrees with the standard model prediction. Limits on the vector boson fusion production cross section times branching fraction for new charged physical states are reported as a function of mass from 200 to 2000 GeV and interpreted in the context of Higgs triplet models.
    MeSH terms: Aircraft; Animals; Disease Vectors; Electrons; Mesons; Motion; Protons; United States
  3. Boroumand Moghaddam A, Moniri M, Azizi S, Abdul Rahim R, Bin Ariff A, Navaderi M, et al.
    Genes (Basel), 2017 Oct 20;8(10).
    PMID: 29053567 DOI: 10.3390/genes8100281
    Green products have strong potential in the discovery and development of unique drugs. Zinc oxide nanoparticles (ZnO NPs) have been observed to have powerful cytotoxicity against cells that cause breast cancer. The present study aims to examine the cell cycle profile, status of cell death, and pathways of apoptosis in breast cancer cells (MCF-7) treated with biosynthesized ZnO NPs. The anti-proliferative activity of ZnO NPs was determined using MTT assay. Cell cycle analysis and the mode of cell death were evaluated using a flow cytometry instrument. Quantitative real-time-PCR (qRT-PCR) was employed to investigate the expression of apoptosis in MCF-7 cells. ZnO NPs were cytotoxic to the MCF-7 cells in a dose-dependent manner. The 50% growth inhibition concentration (IC50) of ZnO NPs at 24 h was 121 µg/mL. Cell cycle analysis revealed that ZnO NPs induced sub-G₁ phase (apoptosis), with values of 1.87% at 0 μg/mL (control), 71.49% at IC25, 98.91% at IC50, and 99.44% at IC75. Annexin V/propidium iodide (PI) flow cytometry analysis confirmed that ZnO NPs induce apoptosis in MCF-7 cells. The pro-apoptotic genes p53, p21, Bax, and JNK were upregulated, whereas anti-apoptotic genes Bcl-2, AKT1, and ERK1/2 were downregulated in a dose-dependent manner. The arrest and apoptosis of MCF-7 cells were induced by ZnO NPs through several signalling pathways.
    MeSH terms: Flow Cytometry; Humans; Propidium; Zinc Oxide; Up-Regulation; Tumor Suppressor Protein p53; G1 Phase; Apoptosis; Annexin A5; Inhibitory Concentration 50; MAP Kinase Signaling System; Mitogen-Activated Protein Kinase 3; bcl-2-Associated X Protein; Nanoparticles; MCF-7 Cells
  4. Chellappan DK, Chellian J, Ng ZY, Sim YJ, Theng CW, Ling J, et al.
    Biomed Pharmacother, 2017 Dec;96:768-781.
    PMID: 29054093 DOI: 10.1016/j.biopha.2017.10.058
    Pazopanib is a relatively new compound to be introduced into the chemotherapy field. It is thought to have decent anti-angiogenic properties, which gives an additional hope for the treatment of certain types of cancers. A systematic review solely discussing about pazopanib and its anti-angiogenic effect is yet to be published to date, despite several relevant clinical trials being conducted over the recent years. In this review, we aim to investigate the mechanism of pazopanib's anti-angiogenic effect and its effectiveness in treating several cancers. We have included, in this study, findings from electronically searchable data from randomized clinical trials, clinical studies, cohort studies and other relevant articles. A total of 352 studies were included in this review. From the studies, the effect of pazopanib in various cancers or models was observed and recorded. Study quality is indefinite, with a few decent quality articles. The most elaborately studied cancers include renal cell carcinoma, solid tumors, advanced solid tumors, soft tissue sarcoma, breast cancer and gynecological cancers. In addition, several less commonly studied cancers are included in the studies as well. Pazopanib had demonstrated its anti-angiogenic effect based on favorable results observed in cancers, which are caused by angiogenesis-related mechanisms, such as renal cell carcinoma, solid tumors, advanced solid tumors and soft tissue sarcoma. This review was conducted to study, analyze and review the anti-angiogenic properties of pazopanib in various cancers. The results obtained can provide a decent reference when considering treatment options for angiogenesis-related malignancies. Furthermore, the definite observations of the anti-angiogenic effects of pazopanib could provide newer insights leading to the future development of drugs of the same mechanism with increased efficiency and reduced adverse effects.
    MeSH terms: Humans; Neoplasms/drug therapy*; Neovascularization, Pathologic/drug therapy*; Pyrimidines/therapeutic use*; Sulfonamides/therapeutic use*; Angiogenesis Inhibitors/therapeutic use
  5. Kruszka P, Porras AR, Sobering AK, Ikolo FA, La Qua S, Shotelersuk V, et al.
    Am J Med Genet A, 2017 Jan;173(1):42-53.
    PMID: 27991738 DOI: 10.1002/ajmg.a.38043
    Down syndrome is the most common cause of cognitive impairment and presents clinically with universally recognizable signs and symptoms. In this study, we focus on exam findings and digital facial analysis technology in individuals with Down syndrome in diverse populations. Photos and clinical information were collected on 65 individuals from 13 countries, 56.9% were male and the average age was 6.6 years (range 1 month to 26 years; SD = 6.6 years). Subjective findings showed that clinical features were different across ethnicities (Africans, Asians, and Latin Americans), including brachycephaly, ear anomalies, clinodactyly, sandal gap, and abundant neck skin, which were all significantly less frequent in Africans (P 
    MeSH terms: Adolescent; Adult; Child; Child, Preschool; Down Syndrome/diagnosis*; Down Syndrome/genetics; Down Syndrome/epidemiology*; Female; Humans; Infant; Infant, Newborn; Male; Phenotype*; Population Surveillance*; Sensitivity and Specificity; Biomarkers; Case-Control Studies; Facies*; Population Groups/genetics; Population Groups/statistics & numerical data*; Young Adult; Genetic Association Studies*
  6. Li H, Khoury M, Bonef B, Alhassan AI, Mughal AJ, Azimah E, et al.
    ACS Appl Mater Interfaces, 2017 Oct 18;9(41):36417-36422.
    PMID: 28960058 DOI: 10.1021/acsami.7b11718
    We demonstrate efficient semipolar (11-22) 550 nm yellow/green InGaN light-emitting diodes (LEDs) with In0.03Ga0.97N barriers on low defect density (11-22) GaN/patterned sapphire templates. The In0.03Ga0.97N barriers were clearly identified, and no InGaN clusters were observed by atom probe tomography measurements. The semipolar (11-22) 550 nm InGaN LEDs (0.1 mm2 size) show an output power of 2.4 mW at 100 mA and a peak external quantum efficiency of 1.3% with a low efficiency drop. In addition, the LEDs exhibit a small blue-shift of only 11 nm as injection current increases from 5 to 100 mA. These results suggest the potential to produce high efficiency semipolar InGaN LEDs with long emission wavelength on large-area sapphire substrates with economical feasibility.
    MeSH terms: Aluminum Oxide; Color; Injections; Tomography, X-Ray Computed
  7. Pipatchartlearnwong K, Swatdipong A, Vuttipongchaikij S, Apisitwanich S
    BMC Genet, 2017 10 12;18(1):88.
    PMID: 29025415 DOI: 10.1186/s12863-017-0554-y
    BACKGROUND: Borassus flabellifer or Asian Palmyra palm is an important crop for local economies in the South and Southeast Asia for its fruit and palm sugar production. Archeological and historical evidence indicated the presence of this species in Southeast Asia dating back at least 1500 years. B. flabellifer is believed to be originated in Africa, spread to South Asia and introduced into Southeast Asia through commercial routes and dissemination of cultures, however, the nature of its invasion and settlement in Thailand is unclear.

    RESULTS: Here, we analyzed genetic data of 230 B. flabellifer accessions across Thailand using 17 EST-SSR and 12 gSSR polymorphic markers. Clustering analysis revealed that the population consisted of two genetic clusters (STRUCTURE K = 2). Cluster I is found mainly in southern Thailand, while Cluster II is found mainly in the northeastern. Those found in the central are of an extensive mix between the two. These two clusters are in moderate differentiation (F ST = 0.066 and N M = 3.532) and have low genetic diversity (HO = 0.371 and 0.416; AR = 2.99 and 3.19, for the cluster I and II respectively). The minimum numbers of founders for each genetic group varies from 3 to 4 individuals, based on simulation using different allele frequency assumptions. These numbers coincide with that B. flabellifer is dioecious, and a number of seeds had to be simultaneously introduced for obtaining both male and female founders.

    CONCLUSIONS: From these data and geographical and historical evidence, we hypothesize that there were at least two different invasive events of B. flabellifer in Thailand. B. flabellifer was likely brought through the Straits of Malacca to be propagated in the southern Thailand as one of the invasive events before spreading to the central Thailand. The second event likely occurred in Khmer Empire, currently Cambodia, before spreading to the northeastern Thailand.

    MeSH terms: Genetics, Population*; Thailand; Genetic Variation*; Sequence Analysis, DNA/methods*; Genome, Plant; Microsatellite Repeats*; Computational Biology/methods*; Arecaceae/genetics*; Introduced Species*
  8. Bukhsh A, Lee SWH, Pusparajah P, Schmitt A, Khan TM
    Health Qual Life Outcomes, 2017 Oct 12;15(1):200.
    PMID: 29025432 DOI: 10.1186/s12955-017-0776-8
    BACKGROUND: Numerous study tools on diabetes self-care have been introduced; however, most existing tools do not show expectable and meaningful correlations with patients' glycaemic control. The Diabetes Self-Management Questionnaire (DSMQ) was designed to appraise self-care activities which can predict glycaemic control outcomes. However, this tool has not been validated in Pakistan. Therefore, the aim of this study was to translate and examine the psychometric properties of the Urdu version of DSMQ among type 2 diabetes patients.

    METHOD: Standard forward-backward translation was used to translate the DSMQ into Urdu language. A convenience sample of 130 patients with type 2 diabetes was collected to assess the Urdu version's psychometric properties. Reliability was assessed by Cronbach's coefficient α and validity was assessed using confirmatory factor analysis and criterion-related correlations.

    RESULTS: High internal consistency was found for all DSMQ scales (Sum scale: α = 0.96, Glucose Management: 0.91; Dietary Control: 0.88; Physical Activity: 0.89; Health-Care Use: 0.73). The DSMQ subscales showed significant correlations with HbA1c (Glucose Management: -0.75; Dietary Control: -0.76; Physical Activity: -0.71; Health-Care Use: -0.64; Sum Scale: -0.78; all p  0.05). Adequate fit to the data was achieved for single factor model after successively modelling all significant correlations between the items' error terms, with Chi2 = 106.6, df = 84, p = 0.049; TLI = 0.98, CFI = 0.99 and RMSEA = 0.05 (90% CI 0.01-0.07). Whereas a comparatively lower fit indices to data were observed in case of four factor model.

    CONCLUSION: The findings support the Urdu version of the DSMQ as a reliable and valid instrument for assessing self-care activities associated with glycaemic control in type 2 diabetes patients.
    MeSH terms: Adult; Aged; Diabetes Mellitus, Type 2/therapy*; Factor Analysis, Statistical; Female; Humans; Language; Male; Middle Aged; Pakistan; Psychometrics; Quality of Life; Surveys and Questionnaires/standards*; Self Care*; Translations; Blood Glucose Self-Monitoring/methods*; Reproducibility of Results
  9. Ahmad Fuzi SF, Koller D, Bruggraber S, Pereira DI, Dainty JR, Mushtaq S
    Am J Clin Nutr, 2017 Dec;106(6):1413-1421.
    PMID: 29046302 DOI: 10.3945/ajcn.117.161364
    Background: Tea has been shown to be a potent inhibitor of nonheme iron absorption, but it remains unclear whether the timing of tea consumption relative to a meal influences iron bioavailability.Objective: The aim of the study was to investigate the effect of a 1-h time interval of tea consumption on nonheme iron absorption in an iron-containing meal in a cohort of iron-replete, nonanemic female subjects with the use of a stable isotope (57Fe).Design: Twelve women (mean ± SD age: 24.8 ± 6.9 y) were administered a standardized porridge meal extrinsically labeled with 4 mg 57Fe as FeSO4 on 3 separate occasions, with a 14-d time interval between each test meal (TM). The TM was administered with water (TM-1), with tea administered simultaneously (TM-2), and with tea administered 1 h postmeal (TM-3). Fasted venous blood samples were collected for iron isotopic analysis and measurement of iron status biomarkers. Fractional iron absorption was estimated by the erythrocyte iron incorporation method.Results: Iron absorption was 5.7% ± 8.5% (TM-1), 3.6% ± 4.2% (TM-2), and 5.7% ± 5.4% (TM-3). Mean fractional iron absorption was found to be significantly higher (2.2%) when tea was administered 1 h postmeal (TM-3) than when tea was administered simultaneously with the meal (TM-2) (P = 0.046). An ∼50% reduction in the inhibitory effect of tea (relative to water) was observed, from 37.2% (TM-2) to 18.1% (TM-3).Conclusions: This study shows that tea consumed simultaneously with an iron-containing porridge meal leads to decreased nonheme iron absorption and that a 1-h time interval between a meal and tea consumption attenuates the inhibitory effect, resulting in increased nonheme iron absorption. These findings are not only important in relation to the management of iron deficiency but should also inform dietary advice, especially that given to those at risk of deficiency. This trial was registered at clinicaltrials.gov as NCT02365103.
    MeSH terms: Adolescent; Adult; Ascorbic Acid/adverse effects; Biological Availability; Edible Grain/chemistry; Erythrocytes/metabolism; Feeding Behavior*; Female; Great Britain; Humans; Intestinal Absorption/drug effects*; Iron/blood; Iron/pharmacokinetics*; Iron Isotopes/blood; Iron Isotopes/pharmacokinetics; Reference Values; Tea/adverse effects*; Cohort Studies; Biomarkers/blood; Anemia, Iron-Deficiency/blood; Anemia, Iron-Deficiency/prevention & control*; Iron, Dietary/blood; Iron, Dietary/pharmacokinetics*; Postprandial Period; Young Adult; Meals*
  10. Troell M, Jonell M, Henriksson PJG
    Nat Ecol Evol, 2017 09;1(9):1224-1225.
    PMID: 29046558 DOI: 10.1038/s41559-017-0304-6
    MeSH terms: Models, Biological; Oceans and Seas*; Seafood*; Aquaculture*
  11. Roll U, Feldman A, Novosolov M, Allison A, Bauer AM, Bernard R, et al.
    Nat Ecol Evol, 2017 11;1(11):1785.
    PMID: 29046563 DOI: 10.1038/s41559-017-0380-7
    In this Article originally published, owing to a technical error, the author 'Laurent Chirio' was mistakenly designated as a corresponding author in the HTML version, the PDF was correct. This error has now been corrected in the HTML version. Further, in Supplementary Table 3, the authors misspelt the surname of 'Danny Meirte'; this file has now been replaced.
    MeSH terms: Filing; Interior Design and Furnishings; Names; Publications
  12. Gan HM, Lee YP, Austin CM
    Front Microbiol, 2017;8:1880.
    PMID: 29046667 DOI: 10.3389/fmicb.2017.01880
    We improved upon the previously reported draft genome of Hydrogenophaga intermedia strain PBC, a 4-aminobenzenesulfonate-degrading bacterium, by supplementing the assembly with Nanopore long reads which enabled the reconstruction of the genome as a single contig. From the complete genome, major genes responsible for the catabolism of 4-aminobenzenesulfonate in strain PBC are clustered in two distinct genomic regions. Although the catabolic genes for 4-sulfocatechol, the deaminated product of 4-aminobenzenesulfonate, are only found in H. intermedia, the sad operon responsible for the first deamination step of 4-aminobenzenesulfonate is conserved in various Hydrogenophaga strains. The absence of pabB gene in the complete genome of H. intermedia PBC is consistent with its p-aminobenzoic acid (pABA) auxotrophy but surprisingly comparative genomics analysis of 14 Hydrogenophaga genomes indicate that pABA auxotrophy is not an uncommon feature among members of this genus. Of even more interest, several Hydrogenophaga strains do not possess the genomic potential for hydrogen oxidation, calling for a revision to the taxonomic description of Hydrogenophaga as "hydrogen eating bacteria."
    MeSH terms: Benzenesulfonates; Catechols; Deamination; Hydrogen; Operon; 4-Aminobenzoic Acid; Genomics; Comamonadaceae; Nanopores
  13. Barmania S, Aljunid SM
    BMC Int Health Hum Rights, 2017 10 18;17(1):30.
    PMID: 29047415 DOI: 10.1186/s12914-017-0138-y
    BACKGROUND: Globally, one of the key groups considered to be at high risk of acquiring HIV are transgender women, often a marginalised group. In the Malaysian context there has been a scarcity of published research relating to transgender women, a sensitive issue in a Muslim majority country, where Islam plays an influential role in society. Furthermore, there has been a paucity of research relating to how such issues relate to HIV prevention in transgender women in Malaysia. Thus, the aim of this study is to explore the attitudes of stakeholders involved in HIV prevention policy in Malaysia towards transgender women, given the Islamic context.

    METHODS: In-depth interviews were undertaken with stakeholders involved in HIV prevention, Ministry of Health, Religious Leaders and People Living with HIV, including transgender women. Thirty five participants were recruited using purposive sampling from June to December 2013 within Kuala Lumpur and surrounding vicinities. Interviews were in person, audiotaped, transcribed verbatim and used a framework analysis.

    RESULTS: Five central themes emerged from the qualitative data; Perceptions of Transgender women and their place in Society; Reaching out to Transgender Women; Islamic doctrine; 'Cure', 'Correction' and finally, Stigma and Discrimination.

    DISCUSSION: Islamic rulings about transgenderism were often the justification given by participants chastising transgender women, whilst there were also more progressive attitudes and room for debate. Pervasive negative attitudes and stigma and discrimination created a climate where transgender women often felt more comfortable with non-governmental organisations.

    CONCLUSION: The situation of transgender women in Malaysia and HIV prevention is a highly sensitive and challenging environment for all stakeholders, given the Muslim context and current legal system. Despite this apparent impasse, there are practically achievable areas that can be improved upon to optimise HIV prevention services and the environment for transgender women in Malaysia.

    MeSH terms: Attitude*; Culture; Female; Government Agencies; Health Policy*; Health Services; Health Services Accessibility; Humans; Islam*; Malaysia; Male; Surveys and Questionnaires; Sexual Behavior; HIV Infections/prevention & control*; Sexuality; Vulnerable Populations; Qualitative Research; Social Stigma*; Transgender Persons*; Social Discrimination*; Religious Personnel
  14. Hii SYF, Ali NA, Ahmad N, Amran F
    J Med Microbiol, 2017 Nov;66(11):1623-1627.
    PMID: 29048275 DOI: 10.1099/jmm.0.000611
    Melioidosis is an endemic infectious disease in Southeast Asia and northern Australia, caused by Burkholderia pseudomallei. However, the incidence rate in Malaysia is not well documented. The high mortality rate and broad range of clinical presentations require rapid and accurate diagnosis for appropriate treatment. This study compared the efficacy of in-house IgM and IgG ELISA methods using a local B. pseudomallei strain. The diagnostic accuracy of the in-house IgG ELISA was better than that of the IgM ELISA: sensitivity (IgG: 84.71 %, IgM: 76.14 %) and specificity (IgG: 93.64 %, IgM: 90.17 %); positive predictive value (IgG: 86.75 %, IgM: 79.76 %) and negative predictive value (IgG: 92.57 %, IgM: 89.66 %); likelihood ratio (LR) [IgG: 13.32, IgM: 7.75 (LR+); IgG: 0.16, IgM: 0.26 (LR-)], and was supported by the observation of the absorbance value in comparisons between culture and serology sampling. In-house IgG ELISA was shown to be useful as an early diagnostic tool for melioidosis.
    MeSH terms: Adolescent; Adult; Aged; Aged, 80 and over; Child; Child, Preschool; Enzyme-Linked Immunosorbent Assay/methods*; Female; Humans; Immunoglobulin G/blood*; Immunoglobulin M/blood*; Infant; Malaysia/epidemiology; Male; Melioidosis/blood; Melioidosis/diagnosis*; Melioidosis/epidemiology; Middle Aged; Burkholderia pseudomallei/immunology; Burkholderia pseudomallei/isolation & purification; Young Adult
  15. Chin AC, Chen CD, Low VL, Lee HL, Azidah AA, Lau KW, et al.
    J Econ Entomol, 2017 10 01;110(5):2247-2251.
    PMID: 29048583 DOI: 10.1093/jee/tox183
    This study was conducted using the glass chamber method to determine the susceptibility status of the dengue vector, Aedes aegypti (L.) from 11 states in Malaysia to commercial mosquito coils containing four different active ingredients, namely metofluthrin, d-allethrin, d-trans allethrin, and prallethrin. Aedes aegypti exhibited various knockdown rates, ranging from 14.44% to 100.00%, 0.00% to 61.67%, 0.00% to 90.00%, and 0.00% to 13.33% for metofluthrin, d-allethrin, d-trans allethrin, and prallethrin, respectively. Overall, mortality rates ranging from 0.00% to 78.33% were also observed among all populations. Additionally, significant associations were detected between the knockdown rates of metofluthrin and d-allethrin, and between metofluthrin and d-trans allethrin, suggesting the occurrence of cross-resistance within pyrethroid insecticides. Overall, this study revealed low insecticidal activity of mosquito coils against Ae. aegypti populations in Malaysia, and consequently may provide minimal personal protection against mosquito bites.
    MeSH terms: Aedes*; Animals; Female; Insecticide Resistance; Insecticides/administration & dosage*; Malaysia; Mosquito Control/instrumentation*
  16. Habib U, Cecilia DW, Maizatul SS
    Se Pu, 2017 Jun 08;35(6):656-664.
    PMID: 29048794 DOI: 10.3724/SP.J.1123.2017.02002
    Ionic liquids (ILs) based ultrasonic-assisted extract has been applied for the extraction of essential oil from Persicaria minor leaves. The effects of temperature, sonication time, and particle size of the plant material on the yield of essential oil were investigated. Among the different ILs employed, 1-ethyl-3-methylimidazolium acetate was the most effective, providing a 9.55% yield of the essential oil under optimum conditions (70 ℃, 25 min, IL:hexane ratio of 7:10 (v/v), particle size 60-80 mesh). The performance of 1-ethyl-3-methylimidazolium acetate in the extraction was attributed to its low viscosity and ability to disintegrate the structural matrix of the plant material. The ability of 1-ethyl-3-methylimidazolium acetate was also confirmed using the conductor like-screening model for realistic solvents. This research proves that ILs can be used to extract essential oils from lignocellulosic biomass.
    MeSH terms: Imidazoles; Oils, Volatile/analysis*; Plant Extracts/chemistry*; Solvents; Ultrasonics; Plant Leaves/chemistry; Ionic Liquids*; Tracheobionta/chemistry*
  17. Lim SY, Teh CSJ, Thong KL
    OMICS, 2017 10;21(10):592-602.
    PMID: 29049010 DOI: 10.1089/omi.2017.0119
    Enterococcus faecium is an opportunistic pathogen with a remarkable ability to acquire resistance toward multiple antibiotics, including those of last-resort drugs such as vancomycin and daptomycin. The occurrence of vancomycin-resistant E. faecium is on the rise and there is a need to understand the virulence of this organism. One of the factors that contributes to the virulence is the ability to form biofilms. Since bacteria in biofilm state are more resistant to antibiotics and host immune response, understanding the molecular mechanism of biofilm development is important to control biofilm-related diseases. The aim of this study was to determine the global gene expression profiles of an E. faecium strain, VREr5, during the early event of sessile growth compared with its planktonic phase through RNA-sequencing approach. The results clearly illustrated distinct expression profiles of the planktonic and biofilm cells. A total of 177 genes were overexpressed in the biofilm cells. Most of them encode for proteins involved in adherence, such as the ebpABCfm locus. Genes associated with plasmid replication, gene exchange, and protein synthesis were also upregulated during the early event of biofilm development. Furthermore, the transcriptome analysis also identified genes such as fsrB, luxS, and spx that might suppress biofilm formation in VREr5. The putative biofilm-related bee locus was found to be downregulated. These new findings could provide caveats for future studies on the regulation and maintenance of biofilm and development of biomarkers for biofilm-related diseases.
    MeSH terms: Bacterial Proteins/genetics; Plankton/genetics*; Transcription, Genetic/genetics*; Virulence/genetics; Gene Expression Regulation, Bacterial/genetics*; Enterococcus faecium/genetics*; Biofilms/growth & development*; Gene Expression Profiling/methods; Virulence Factors/genetics; Transcriptome/genetics*
  18. Goh CH, Ng SC, Kamaruzzaman SB, Chin AV, Tan MP
    Medicine (Baltimore), 2017 Oct;96(42):e8193.
    PMID: 29049203 DOI: 10.1097/MD.0000000000008193
    The aim of this study was to determine the relationship between falls and beat-to-beat blood pressure (BP) variability.Continuous noninvasive BP measurement is as accurate as invasive techniques. We evaluated beat-to-beat supine and standing BP variability (BPV) using time and frequency domain analysis from noninvasive continuous BP recordings.A total of 1218 older adults were selected. Continuous BP recordings obtained were analyzed to determine standard deviation (SD) and root mean square of real variability (RMSRV) for time domain BPV and fast-Fourier transform low frequency (LF), high frequency (HF), total power spectral density (PSD), and LF:HF ratio for frequency domain BPV.Comparisons were performed between 256 (21%) individuals with at least 1 fall in the past 12 months and nonfallers. Fallers were significantly older (P = .007), more likely to be female (P = .006), and required a longer time to complete the Timed-Up and Go test (TUG) and frailty walk test (P ≤ .001). Standing systolic BPV (SBPV) was significantly lower in fallers compared to nonfallers (SBPV-SD, P = .016; SBPV-RMSRV, P = .033; SBPV-LF, P = .003; SBPV-total PSD, P = .012). Nonfallers had significantly higher supine to standing ratio (SSR) for SBPV-SD, SBPV-RMSRV, and SBPV-total PSD (P = .017, P = .013, and P = .009). In multivariate analyses, standing BPV remained significantly lower in fallers compared to nonfallers after adjustment for age, sex, diabetes, frailty walk, and supine systolic BP. The reduction in frequency-domain SSR among fallers was attenuated by supine systolic BP, TUG, and frailty walk.In conclusion, reduced beat-to-beat BPV while standing is independently associated with increased risk of falls. Changes between supine and standing BPV are confounded by supine BP and walking speed.
    MeSH terms: Accidental Falls/statistics & numerical data*; Aged; Blood Pressure/physiology*; Female; Fourier Analysis; Heart Rate/physiology; Humans; Longitudinal Studies; Malaysia; Male; Middle Aged; Posture/physiology*; Risk Factors; Cohort Studies; Supine Position/physiology; Blood Pressure Monitoring, Ambulatory/methods*
  19. Heckenhauer J, Abu Salim K, Chase MW, Dexter KG, Pennington RT, Tan S, et al.
    PLoS One, 2017;12(10):e0185861.
    PMID: 29049301 DOI: 10.1371/journal.pone.0185861
    DNA barcoding is a fast and reliable tool to assess and monitor biodiversity and, via community phylogenetics, to investigate ecological and evolutionary processes that may be responsible for the community structure of forests. In this study, DNA barcodes for the two widely used plastid coding regions rbcL and matK are used to contribute to identification of morphologically undetermined individuals, as well as to investigate phylogenetic structure of tree communities in 70 subplots (10 × 10m) of a 25-ha forest-dynamics plot in Brunei (Borneo, Southeast Asia). The combined matrix (rbcL + matK) comprised 555 haplotypes (from ≥154 genera, 68 families and 25 orders sensu APG, Angiosperm Phylogeny Group, 2016), making a substantial contribution to tree barcode sequences from Southeast Asia. Barcode sequences were used to reconstruct phylogenetic relationships using maximum likelihood, both with and without constraining the topology of taxonomic orders to match that proposed by the Angiosperm Phylogeny Group. A third phylogenetic tree was reconstructed using the program Phylomatic to investigate the influence of phylogenetic resolution on results. Detection of non-random patterns of community assembly was determined by net relatedness index (NRI) and nearest taxon index (NTI). In most cases, community assembly was either random or phylogenetically clustered, which likely indicates the importance to community structure of habitat filtering based on phylogenetically correlated traits in determining community structure. Different phylogenetic trees gave similar overall results, but the Phylomatic tree produced greater variation across plots for NRI and NTI values, presumably due to noise introduced by using an unresolved phylogenetic tree. Our results suggest that using a DNA barcode tree has benefits over the traditionally used Phylomatic approach by increasing precision and accuracy and allowing the incorporation of taxonomically unidentified individuals into analyses.
    MeSH terms: Borneo; Phylogeny*; Plants/classification; Plants/genetics*; Likelihood Functions; DNA, Plant/genetics*; Databases, Genetic; DNA Barcoding, Taxonomic/methods*; Forests*
  20. Chasen M, Urban L, Schnadig I, Rapoport B, Powers D, Arora S, et al.
    Support Care Cancer, 2017 01;25(1):85-92.
    PMID: 27557833
    PURPOSE: Addition of rolapitant to standard antiemetic therapy improved protection against chemotherapy-induced nausea and vomiting (CINV) in phase 3 trials of patients receiving highly emetogenic chemotherapy (HEC) or moderately emetogenic chemotherapy (MEC). Here, we assessed the impact of CINV on the daily lives of patients receiving HEC or MEC using the Functional Living Index-Emesis (FLIE).

    METHODS: In three double-blind phase 3 studies, patients receiving HEC or MEC were randomized 1:1 to receive oral rolapitant 180 mg or placebo prior to chemotherapy plus 5-hydroxytryptamine type 3 receptor antagonist and dexamethasone therapy. Patients completed the FLIE questionnaire on day 6 of cycle 1. Endpoints included FLIE total score, nausea and vomiting domain scores, and the proportion of patients with no impact on daily life (total score >108 [range 18-126]). We performed a prespecified analysis of the MEC/anthracycline-cyclophosphamide (AC) study and a post hoc analysis of two pooled cisplatin-based HEC studies.

    RESULTS: In the pooled HEC studies, rolapitant significantly improved the FLIE total score (114.5 vs 109.3, p 

    MeSH terms: Adult; Aged; Aged, 80 and over; Antiemetics/therapeutic use; Antineoplastic Combined Chemotherapy Protocols/adverse effects*; Antineoplastic Combined Chemotherapy Protocols/therapeutic use; Cisplatin/administration & dosage; Cisplatin/adverse effects; Cyclophosphamide/administration & dosage; Cyclophosphamide/adverse effects; Dexamethasone/therapeutic use; Double-Blind Method; Female; Humans; Male; Middle Aged; Nausea/chemically induced; Nausea/prevention & control*; Neoplasms/drug therapy; Quality of Life; Spiro Compounds/therapeutic use*; Vomiting/chemically induced; Vomiting/prevention & control*; Anthracyclines/administration & dosage; Anthracyclines/adverse effects; Young Adult; Neurokinin-1 Receptor Antagonists/therapeutic use
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