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N A Nik Muhamad, R Hawari, H Shafie
Aluminium phosphide (ALP) is highly toxic and poisoning can result in high mortality rates. A 26-year-old female who allegedly ingested a toxic dose of ALP presented with vomiting and diarrhoea. She developed cardiac arrest with refractory pulseless ventricular tachycardia. Despite aggressive resuscitation, she succumbed to death seven hours following ingestion. In cases like this, a better outcome can be achieved with early arrival, prompt diagnosis, aggressive resuscitation and intensive monitoring.
August 2016: Medical Journal of Malaysia
Thahira Jamal Mohamed, Sirinya Teeraananchai, Stephen J Kerr, Wanatpreeya Phongsamart, Nik Khairulddin Nik Yusoff, Rawiwan Hansudewechakul, Penh Sun Ly, Lam Van Nguyen, Tavitiya Sudjaritruk, Pagakrong Lumbiganon, Viet Chau Do, Nia Kurniati, Nagalingeswaran Kumarasamy, Dewi Kumara Wati, Moy Siew Fong, Revathy Nallusamy, Azar Kariminia, Annette Sohn
<b>Background.</b> We sought to assess the impact of routine HIV viral load (VL) monitoring on the incidence of switching from a first- to a second-line antiretroviral therapy (ART) regimen, and to describe factors associated with switch. <b>Methods.</b> Data from a regional cohort of 16 clinical programs in 6 Asian countries were analyzed. Second-line switch was defined as a change from a non-nucleoside reverse transcriptase inhibitor (NNRTI) to a protease inhibitor (PI) or vice versa, and >1 of the following: 1) reported treatment failure by local criteria, 2) switch of >1 additional drug, or 3) a preceding HIV viral load (VL) ≥1,000 copies/mL...
October 19, 2016: AIDS Research and Human Retroviruses
Nurbek Mambetsariev, Wai W Lin, Alicia M Wallis, Laura L Stunz, Gail A Bishop
The adaptor protein TNF receptor-associated factor 3 (TRAF3) is a critical regulator of B lymphocyte survival. B cell-specific TRAF3 deficiency results in enhanced viability and is associated with development of lymphoma and multiple myeloma. We show that TRAF3 deficiency led to induction of two proteins important for glucose metabolism, Glut1 and Hexokinase 2 (HXK2). This was associated with increased glucose uptake. In the absence of TRAF3, anaerobic glycolysis and oxidative phosphorylation were increased in B cells without changes in mitochondrial mass or reactive oxygen species...
October 18, 2016: Scientific Reports
Hatta Sidi, Duni Asmidar, Loh Huai Seng, Nik Ruzyanei Nik Jaafar, Marhani Midi, Ng Chong Guan
OBJECTIVES: The current study compares the risk of sexual pain in depressed female patients in remission between those who were treated with Escitalopram and Fluoxetine. The associated factors were also examined. METHODS: This is a cross-sectional study involved 112 depressed female patients (56 treated with Escitalopram and 56 treated with Fluoxetine) who were in remission (as defined by Diagnostic and Statistical Manual-IV (DSM-IV) in the past 2 months and Montgomery-Asberg Depression Rating Scale (MADRS) score of ≤ 10) from the psychiatric clinic, University Kebangsaan Malaysia Medical Centre (UKMMC)...
March 1, 2016: Psychopharmacology Bulletin
Yan Xiu, Wingel Y Xue, Allyn Lambertz, Mariah Leidinger, Katherine Gibson-Corley, Chen Zhao
Previously we have shown that loss of non-canonical NF-κB signaling impairs self-renewal of hematopoietic stem/progenitor cells (HSPCs). This prompted us to investigate whether persistent activation of the non-canonical NF-κB signaling will have supportive effects on HSPC self-renewal. NF-κB-inducing kinase (NIK) is an important kinase that mainly activates the non-canonical pathway through directly phosphorylating IKKα. In contrast to our expectations, constitutive activation of NIK in the hematopoietic system leads to bone marrow failure and postnatal lethality due to intrinsic impairment of HSPC self-renewal and extrinsic disruption of bone marrow microenvironment through enhancing osteoclastogenesis...
October 12, 2016: Stem Cells
Teik Min Chong, Wai-Fong Yin, Jian-Woon Chen, Samuel Mondy, Catherine Grandclément, Denis Faure, Yves Dessaux, Kok-Gan Chan
Trace metals are required in many cellular processes in bacteria but also induce toxic effects to cells when present in excess. As such, various forms of adaptive responses towards extracellular trace metal ions are essential for the survival and fitness of bacteria in their environment. A soil Pseudomonas putida, strain S13.1.2 has been isolated from French vineyard soil samples, and shown to confer resistance to copper ions. Further investigation revealed a high capacity to tolerate elevated concentrations of various heavy metals including nickel, cobalt, cadmium, zinc and arsenic...
December 2016: AMB Express
Kim Tien Ng, Jack Bee Chook, Xiang Yong Oong, Yoke Fun Chan, Kok Gan Chan, Nik Sherina Hanafi, Yong Kek Pang, Adeeba Kamarulzaman, Kok Keng Tee
Human rhinovirus (HRV) is the major aetiology of respiratory tract infections. HRV viral load assays are available but limitations that affect accurate quantification exist. We developed a one-step Taqman assay using oligonucleotides designed based on a comprehensive list of global HRV sequences. The new oligonucleotides targeting the 5'-UTR region showed high PCR efficiency (E = 99.6%, R(2) = 0.996), with quantifiable viral load as low as 2 viral copies/μl. Assay evaluation using an External Quality Assessment (EQA) panel yielded a detection rate of 90%...
October 10, 2016: Scientific Reports
Cristina Morales Torres, Alva Biran, Matthew J Burney, Harshil Patel, Tristan Henser-Brownhill, Ayelet-Hashahar Shapira Cohen, Yilong Li, Rotem Ben-Hamo, Emma Nye, Bradley Spencer-Dene, Probir Chakravarty, Sol Efroni, Nik Matthews, Tom Misteli, Eran Meshorer, Paola Scaffidi
Tumors comprise functionally diverse subpopulations of cells with distinct proliferative potential. Here, we show that dynamic epigenetic states defined by the linker histone H1.0 determine which cells within a tumor can sustain the long-term cancer growth. Numerous cancer types exhibit high inter- and intratumor heterogeneity of H1.0, with H1.0 levels correlating with tumor differentiation status, patient survival, and, at the single-cell level, cancer stem cell markers. Silencing of H1.0 promotes maintenance of self-renewing cells by inducing derepression of megabase-sized gene domains harboring downstream effectors of oncogenic pathways...
September 30, 2016: Science
Martin Vyska, Nik Cunniffe, Christopher Gilligan
The deployment of crop varieties that are partially resistant to plant pathogens is an important method of disease control. However, a trade-off may occur between the benefits of planting the resistant variety and a yield penalty, whereby the standard susceptible variety outyields the resistant one in the absence of disease. This presents a dilemma: deploying the resistant variety is advisable only if the disease occurs and is sufficient for the resistant variety to outyield the infected standard variety. Additionally, planting the resistant variety carries with it a further advantage in that the resistant variety reduces the probability of disease invading...
October 2016: Journal of the Royal Society, Interface
Worawan Kunotai, Panjit Ananpornruedee, Mark Lubinsky, Apitchaya Pruksametanan, Piranit Nik Kantaputra
A Thai mother and her two daughters were affected with tricho-rhino-phalangeal syndrome type I. The daughters had 15 and 18 supernumerary teeth, respectively. The mother had normal dentition. Mutation analysis of TRPS1 showed a novel heterozygous c.3809_3811delACTinsCATGTTGTG mutation in all. This mutation is predicted to cause amino acid changes in the Ikaros-like zinc finger domain near the C-terminal end of TRPS1, which is important for repressive protein function. The results of our study and the comprehensive review of the literature show that pathways of forming supernumerary teeth appear to involve APC and RUNX2, the genes responsible for familial adenomatous polyposis syndrome and cleidocranial dysplasia, respectively...
October 5, 2016: American Journal of Medical Genetics. Part A
Li Su, Hongli Du, Xin Dong, Xiuhua Zhang, Ziyang Lou
Raf-1 kinase inhibitory protein (RKIP) is a critical molecule for cellular responses to stimuli. In this study, we investigated whether RKIP is responsible for neural cell apoptosis induced by oxygen-glucose deprivation (OGD) and explored the role of NF-κB and ERK pathways regulated by RKIP under OGD stimuli. RKIP was overexpressed or knocked down using lentivirus in PC12 cells, which were then challenged by OGD. RKIP overexpression significantly increased the cell viability of OGD cells, and attenuated apoptosis, cell cycle arrest, and reactive oxygen species generation...
September 2016: Journal of Clinical Biochemistry and Nutrition
Nik N Abdullah, Suzanna Daud, Waqar Al-Kubaisy, Izni S Saari, Siti R Saad
OBJECTIVES: The objectives of this study were to determine the prevalence and predictors of Pap smear screening among women aged 50 years and older. STUDY DESIGN: This cross-sectional study was conducted at two large urban health centres in Selangor. A total of 515 women aged 50 and older were recruited. RESULTS: The mean age of the respondents was 58.83±7.05, with a range of 50- 83 years. The prevalence of Pap smear screening was 39.22% (n=202)...
September 21, 2016: European Journal of Obstetrics, Gynecology, and Reproductive Biology
Sin-Li Lee, Li-Ngee Ho, Soon-An Ong, Yee-Shian Wong, Chun-Hong Voon, Wan Fadhilah Khalik, Nik Athirah Yusoff, Noradiba Nordin
Photocatalytic fuel cell (PFC) is a potential wastewater treatment technology that can generate electricity from the conversion of chemical energy of organic pollutants. An immobilized ZnO/Zn fabricated by sonication and heat attachment method was applied as the photoanode and Pt/C plate was used as the cathode of the PFC in this study. Factors that affect the decolorization efficiency and electricity generation of the PFC such as different initial dye concentrations and pH were investigated. Results revealed that the degradation of Reactive Green 19 (RG19) was enhanced in a closed circuit PFC compared with that of a opened circuit PFC...
January 2017: Chemosphere
Wan Fatma Zuharah, Maniam Thiagaletchumi, Nik Fadzly
The interaction between plants and insects is dynamic, and may favour either the plant or the insect. Plant chemicals are deeply implicated in this relationship and influence insect behaviour. Here, we investigated the oviposition behaviour response of Culex quinquefasciatus mosquitoes based on the colour cues produced by Ipomoea cairica leaves extract. In this study, two sets of oviposition choice experiments were conducted: (1) single solution in a cage; and (2) multiple concentration solutions in a cage...
August 2016: Tropical Life Sciences Research
Nor Amira Abdul Rahman, Zalila Ali, Wan Fatma Zuharah, Nik Fadzly
UNLABELLED: We conducted several aviary experiments to investigate the influence of colours in quantity judgments of two species of birds; house crow (Corvus splendens) and common myna (Acridotheres tristis). Different quantity (in seven different food proportions) of mealworms were presented nonsequentially to all birds using artificially coloured red mealworms, for experiment 1, and using artificially coloured green mealworms, for experiment 2. Both red and green coloured mealworms have no significant effect on house crow's quantity judgments (red: ANOVA: F6,30 = 1...
August 2016: Tropical Life Sciences Research
Nobumitsu Sakai, Emmy Dayana, Azizi Abu Bakar, Minoru Yoneda, Nik Meriam Nik Sulaiman, Mustafa Ali Mohd
Polychlorinated biphenyls (PCBs) were monitored in surface water collected in the Selangor River basin, Malaysia, to identify the occurrence, distribution, and dechlorination process as well as to assess the potential adverse effects to the Malaysian population. Ten PCB homologs (i.e., mono-CBs to deca-CBs) were quantitated by using gas chromatography-mass spectrometry (GC/MS). The total concentration of PCBs in the 10 sampling sites ranged from limit of detection to 7.67 ng L(-1). The higher chlorinated biphenyls (tetra-CBs to deca-CBs) were almost not detected in most of the sampling sites, whereas lower chlorinated biphenyls (mono-CBs, di-CBs, and tri-CBs) dominated more than 90 % of the 10 homologs in all the sampling sites...
October 2016: Environmental Monitoring and Assessment
Amanda J Fusco, Anup Mazumder, Vivien Ya-Fan Wang, Zhihua Tao, Carl Ware, Gourisankar Ghosh
The heterodimer formed by the nuclear factor κB (NF-κB) subunits p52 and RelB is the product of noncanonical signaling in which the key event is the proteolytic processing of p100 to generate p52. The kinases NF-κB-inducing kinase (NIK) and inhibitor of κB kinase 1 (IKK1; also known as IKKα) are activated during noncanonical signaling and play essential roles in p100 processing. In resting cells, RelB remains associated with unprocessed p100 as a transcriptionally inert p100:RelB complex, which is part of a larger assembly with other NF-κB factors known as the "kappaBsome...
2016: Science Signaling
Marcel Smid, F Germán Rodríguez-González, Anieta M Sieuwerts, Roberto Salgado, Wendy J C Prager-Van der Smissen, Michelle van der Vlugt-Daane, Anne van Galen, Serena Nik-Zainal, Johan Staaf, Arie B Brinkman, Marc J van de Vijver, Andrea L Richardson, Aquila Fatima, Kim Berentsen, Adam Butler, Sancha Martin, Helen R Davies, Reno Debets, Marion E Meijer-Van Gelder, Carolien H M van Deurzen, Gaëtan MacGrogan, Gert G G M Van den Eynden, Colin Purdie, Alastair M Thompson, Carlos Caldas, Paul N Span, Peter T Simpson, Sunil R Lakhani, Steven Van Laere, Christine Desmedt, Markus Ringnér, Stefania Tommasi, Jorunn Eyford, Annegien Broeks, Anne Vincent-Salomon, P Andrew Futreal, Stian Knappskog, Tari King, Gilles Thomas, Alain Viari, Anita Langerød, Anne-Lise Børresen-Dale, Ewan Birney, Hendrik G Stunnenberg, Mike Stratton, John A Foekens, John W M Martens
A recent comprehensive whole genome analysis of a large breast cancer cohort was used to link known and novel drivers and substitution signatures to the transcriptome of 266 cases. Here, we validate that subtype-specific aberrations show concordant expression changes for, for example, TP53, PIK3CA, PTEN, CCND1 and CDH1. We find that CCND3 expression levels do not correlate with amplification, while increased GATA3 expression in mutant GATA3 cancers suggests GATA3 is an oncogene. In luminal cases the total number of substitutions, irrespective of type, associates with cell cycle gene expression and adverse outcome, whereas the number of mutations of signatures 3 and 13 associates with immune-response specific gene expression, increased numbers of tumour-infiltrating lymphocytes and better outcome...
2016: Nature Communications
Z K Eshkuvatov, F S Zulkarnain, N M A Nik Long, Z Muminov
Modified homotopy perturbation method (HPM) was used to solve the hypersingular integral equations (HSIEs) of the first kind on the interval [-1,1] with the assumption that the kernel of the hypersingular integral is constant on the diagonal of the domain. Existence of inverse of hypersingular integral operator leads to the convergence of HPM in certain cases. Modified HPM and its norm convergence are obtained in Hilbert space. Comparisons between modified HPM, standard HPM, Bernstein polynomials approach Mandal and Bhattacharya (Appl Math Comput 190:1707-1716, 2007), Chebyshev expansion method Mahiub et al...
2016: SpringerPlus
Marion Boldingh, Angelina Maniaol, Cathrine Brunborg, Luuk Dekker, Alexander Lipka, Erik Niks, Jan Verschuuren, Chantal Tallaksen
: Multiethnic studies can provide etiological clues towards the genetic and environmental influence of a disease. The aim of this study was to determine prevalence and clinical features of myasthenia gravis (MG) in immigrants compared to native patients in 2 population-based cohorts. METHODS: This cross-sectional study included 843 MG patients (375 from Norway and 468 from the Netherlands). Ethnic background was defined by questionnaires. RESULTS: Among the participating MG patients, 163 of 843 (19...
September 19, 2016: Muscle & Nerve
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