Browse publications by year: 2016

  1. Pramanik BK, Pramanik SK, Suja F
    J Water Health, 2016 Feb;14(1):90-6.
    PMID: 26837833 DOI: 10.2166/wh.2015.159
    Effects of biological activated carbon (BAC), biological aerated filter (BAF), alum coagulation and Moringa oleifera coagulation were investigated to remove iron and arsenic contaminants from drinking water. At an initial dose of 5 mg/L, the removal efficiency for arsenic and iron was 63% and 58% respectively using alum, and 47% and 41% respectively using Moringa oleifera. The removal of both contaminants increased with the increase in coagulant dose and decrease in pH. Biological processes were more effective in removing these contaminants than coagulation. Compared to BAF, BAC gave greater removal of both arsenic and iron, removing 85% and 74%, respectively. Longer contact time for both processes could reduce the greater concentration of arsenic and iron contaminants. The addition of coagulation (at 5 mg/L dosage) and a biological process (with 15 or 60 min contact time) could significantly increase removal efficiency, and the maximum removal was observed for the combination of alum and BAC treatment (60 min contact time), with 100% and 98.56% for arsenic and iron respectively. The reduction efficiency of arsenic and iron reduced with the increase in the concentration of dissolved organics in the feedwater due to the adsorption competition between organic molecules and heavy metals.
    MeSH terms: Adsorption; Arsenic/chemistry*; Charcoal/chemistry*; Iron/chemistry*; Seeds/chemistry; Water Pollutants, Chemical/chemistry*; Water Purification/methods*; Moringa oleifera/chemistry*; Drinking Water/analysis*
  2. Hamidi EN, Hajeb P, Selamat J, Abdull Razis AF
    Asian Pac J Cancer Prev, 2016;17(1):15-23.
    PMID: 26838201
    Polycyclic aromatic hydrocarbons (PAHs) are primarily formed as a result of thermal treatment of food, especially barbecuing or grilling. Contamination by PAHs is due to generation by direct pyrolysis of food nutrients and deposition from smoke produced through incomplete combustion of thermal agents. PAHs are ubiquitous compounds, well-known to be carcinogenic, which can reach the food in different ways. As an important human exposure pathway of contaminants, dietary intake of PAHs is of increasing concern for assessing cancer risk in the human body. In addition, the risks associated with consumption of barbecued meat may increase if consumers use cooking practices that enhance the concentrations of contaminants and their bioaccessibility. Since total PAHs always overestimate the actual amount that is available for absorption by the body, bioaccessibility of PAHs is to be preferred. Bioaccessibility of PAHs in food is the fraction of PAHs mobilized from food matrices during gastrointestinal digestion. An in vitro human digestion model was chosen for assessing the bioaccessibility of PAHs in food as it offers a simple, rapid, low cost alternative to human and animal studies; providing insights which may not be achievable in in vivo studies. Thus, this review aimed not only to provide an overview of general aspects of PAHs such as the formation, carcinogenicity, sources, occurrence, and factors affecting PAH concentrations, but also to enhance understanding of bioaccessibility assessment using an in vitro digestion model.
    MeSH terms: Animals; Biological Availability; Carcinogens/toxicity*; Environmental Exposure/adverse effects; Humans; Meat/adverse effects*; Neoplasms/etiology*; Polycyclic Hydrocarbons, Aromatic/adverse effects*; Risk Assessment
  3. Thiagarajan M, Chan CM, Fuang HG, Beng TS, Atiliyana MA, Yahaya NA
    Asian Pac J Cancer Prev, 2016;17(1):171-6.
    PMID: 26838205
    BACKGROUND: Much has been done to examine the psychological impact of cancer treatment, but it remains unclear to what extent anxiety and depression is related to symptom prevalence. The present study concerned the characteristics and frequency of distress as related to symptom prevalence in cancer patients undergoing chemotherapy in Malaysia.

    MATERIALS AND METHODS: Participants were 303 consecutive adult cancer patients undergoing chemotherapy in an academic medical center. The short form Memorial Symptom Assessment Scale (MSAS-SF), which covers three domains of symptoms (global distress, physical- and psychological symptoms) was used to cross-sectionally measure symptom frequency and associated distress via self-reporting. One-way ANOVA and t-tests were used to test mean differences among MSAS-SF subscale scores.

    RESULTS: Complete data were available for 303 patients. The mean number of symptoms was 14.5. The five most prevalent were fatigue, dry mouth, hair loss, drowsiness and lack of appetite. Overall, symptom burden and frequency were higher than in other published MSAS-SF studies. Higher symptom frequency was also found to be significantly related to greater distress in cancer patients undergoing chemotherapy.

    CONCLUSIONS: Patients undergoing chemotherapy suffer from multiple physical and psychological symptoms. Better symptom control or palliative care is needed. Greater frequency of reported symptoms may also indicate a subconscious bid by patients for care and reassurance - thus tailored intervention to manage distress should be offered.

    MeSH terms: Antineoplastic Agents/adverse effects*; Antineoplastic Agents/therapeutic use; Anxiety/chemically induced; Anxiety/psychology; Depression/psychology; Female; Humans; Malaysia; Male; Middle Aged; Neoplasms/drug therapy; Neoplasms/psychology*; Stress, Psychological/psychology*; Prevalence; Symptom Assessment; Drug-Related Side Effects and Adverse Reactions/etiology; Drug-Related Side Effects and Adverse Reactions/psychology*
  4. Maarof MF, Ali AM, Amit N, Bakry MM, Taha NA
    Asian Pac J Cancer Prev, 2016;17(1):207-14.
    PMID: 26838211
    In Malaysia, data on components suitability the established smoking cessation module is limited. This exploratory study aimed to evaluate the suitability of the components developed in the module for group behavioural therapy in workplace smoking cessation programs. Twenty staff were identified but only eight individuals were selected according to the study criteria during the recruitment period in May 2014. Focus group discussion was conducted to identify themes relevant to the behavioural issues among smokers. Thematic analysis yielded seven major themes which were reasons for regular smoking, reasons for quitting, comprehending smoking characteristics, quit attempt experiences, support and encouragement, learning new skills and behaviour, and preparing for lapse/relapse or difficult situations. As a result, the developed module was found to be relevant and suitable for use based on these themes.
    MeSH terms: Adult; Behavior Therapy/methods*; Humans; Malaysia; Male; Motivation; Pilot Projects; Psychotherapy, Group/methods*; Surveys and Questionnaires; Recurrence; Smoking/therapy*; Tobacco Use Disorder/therapy*; Smoking Cessation/methods*; Workplace; Focus Groups
  5. Khor GH, Froemming GR, Zain RB, Abraham TM, Lin TK
    Asian Pac J Cancer Prev, 2016;17(1):219-23.
    PMID: 26838213
    BACKGROUND: Promoter hypermethylation is a frequent epigenetic mechanism for gene transcription repression in cancer and is one of the hallmarks of the disease. Cadherin EGF LAG seven-pass G-type receptor 3 (CELSR3) contributes to cell contact-mediated communication. Dysregulation of promoter methylation has been reported in various cancers.

    OBJECTIVES: The objectives of this study were to investigate the CELSR3 hypermethylation level in oral squamous cell carcinomas (OSCCs) using methylation-sensitive high-resolution melting analysis (MS-HRM) and to correlate CELSR3 methylation with patient demographic and clinicopathological parameters.

    MATERIALS AND METHODS: Frozen tissue samples of healthy subjects' normal mucosa and OSCCs were examined with regard to their methylation levels of the CELSR3 gene using MS-HRM.

    RESULTS: MS-HRM analysis revealed a high methylation level of CELSR3 in 86% of OSCC cases. Significant correlations were found between CELSR3 quantitative methylation levels with patient ethnicity (P=0.005), age (P=0.024) and pathological stages (P=0.004). A moderate positive correlation between CELSR3 and patient age was also evident (R=0.444, P=0.001).

    CONCLUSIONS: CELSR3 promoter hypermethylation may be an important mechanism involved in oral carcinogenesis. It may thus be used as a biomarker in OSCC prognostication.

    MeSH terms: Carcinoma, Squamous Cell/genetics*; DNA, Neoplasm/genetics; Female; Humans; Male; Middle Aged; Mouth Neoplasms/genetics*; Promoter Regions, Genetic/genetics; Receptors, Cell Surface/genetics*; Biomarkers, Tumor/genetics; Cadherins/genetics*; Gene Expression Regulation, Neoplastic/genetics; DNA Methylation/genetics*
  6. Mutalib NS, Yusof AM, Mokhtar NM, Harun R, Muhammad R, Jamal R
    Asian Pac J Cancer Prev, 2016;17(1):25-35.
    PMID: 26838219
    Lymph node metastasis (LNM) in papillary thyroid cancer (PTC) has been shown to be associated with increased risk of locoregional recurrence, poor prognosis and decreased survival, especially in older patients. Hence, there is a need for a reliable biomarker for the prediction of LNM in this cancer. MicroRNAs (miRNAs) are small noncoding RNAs that regulate gene translation or degradation and play key roles in numerous cellular functions including cell-cycle regulation, differentiation, apoptosis, invasion and migration. Various studies have demonstrated deregulation of miRNA levels in many diseases including cancers. While a large number of miRNAs have been identified from PTCs using various means, association of miRNAs with LNM in such cases is still controversial. Furthermore, studies linking most of the identified miRNAs to the mechanism of LNM have not been well documented. The aim of this review is to update readers on the current knowledge of miRNAs in relation to LNM in PTC.
    MeSH terms: Animals; Carcinoma/genetics*; Carcinoma/pathology*; Carcinoma, Papillary; Humans; Lymph Nodes/pathology; Lymphatic Metastasis/genetics*; Lymphatic Metastasis/pathology*; Thyroid Neoplasms/genetics*; Thyroid Neoplasms/pathology*; Biomarkers, Tumor/genetics; MicroRNAs/genetics*
  7. Kwang NB, Mahayudin T, Yien HL, Abdul Karim AK, Teik CK, Shan LP
    Asian Pac J Cancer Prev, 2016;17(1):267-74.
    PMID: 26838222
    BACKGROUND: Cervical cancer is the fourth most common cancer among women worldwide. Studies evaluating the effect of health education on knowledge and perception of cervical cancer have generated conflicting results. Thus, this study aimed to evaluate the effect of educational intervention towards knowledge of HPV vacccination for cervical cancer prevention among pre-university students in Malaysia.

    MATERIALS AND METHODS: This was an experimental before and after study performed between October 2014 and March 2015. Five hundred and eighty students were randomly assigned into intervention and control groups. All were required to complete both pre-intervention and post-intervention questionnaires. Those in the intervention group were given an information leaflet to read before answering the post-intervention questionnaire.

    RESULTS: Almost half (48.3%) of the students had poor knowledge, with a score less than 5, and only 51 (8.8%) exhibited good knowledge, with a score of 11 and above. After educational intervention, the number of students with poor knowledge was reduced to 177 (29.3%) and the number of students who exhibited good knowledge increased to 148 (25.5%). Students from the intervention group demonstrated significant higher total scores in knowledge regarding 'HPV infection and cervical cancer' (p=0.000) and 'HPV vaccination and cervical cancer prevention' (p=0.000) during post-intervention as compared to the control group.

    CONCLUSIONS: Knowledge on HPV infection and vaccination is low among pre-university students. Educational intervention in the form of information leaflets appears effective in creating awareness and improving knowledge.

    MeSH terms: Adolescent; Uterine Cervical Neoplasms/immunology; Uterine Cervical Neoplasms/prevention & control; Uterine Cervical Neoplasms/virology; Female; Health Education*; Humans; Health Knowledge, Attitudes, Practice*; Malaysia; Male; Perception; Surveys and Questionnaires; Students; Universities; Vaccination/methods; Papillomaviridae/immunology*; Papillomavirus Infections/immunology*; Papillomavirus Infections/prevention & control*
  8. Yasin SM, Isa MR, Fadzil MA, Zamhuri MI, Selamat MI, Mat Ruzlin AN, et al.
    Asian Pac J Cancer Prev, 2016;17(1):275-80.
    PMID: 26838223
    BACKGROUND: A tobacco-free workplace policy is identified as an effective means to reduce tobacco use and protect people from second-hand smoke; however, the number of tobacco-free policies (TFP) remains very low in workplaces in Malaysia. This study explored the factors affecting support for a tobacco-free policy on two healthcare campuses in Malaysia, prior to the implementation of TFP.

    MATERIALS AND METHODS: This cross- sectional study was conducted among 286 non-smokers from two healthcare training centres and two nearby colleges in Malaysia from January 2015 to April 2015. A standardized questionnaire was administered via staff and student emails. The questionnaire collected information on sociodemographic characteristics, support for a tobacco-free policy and perceived respiratory and sensory symptoms due to tobacco exposure. Bivariate and multivariate logistic regression analyses were performed to estimate the independent effects of supporting a tobacco-free campus.

    RESULTS: The percentage of individuals supporting completely tobacco-free facilities was 83.2% (N=238), as opposed to 16.7% (N=48) in support of partially tobacco-free facilities. Compared to the supporters of partially tobacco-free facilities, non-smokers who supported completely tobacco-free health facilities were more likely to be female, have higher education levels, to be very concerned about the effects of other people smoking on their health and to perceive a tobacco-free policy as very important. In addition, they perceived that tobacco smoke bothered them at work by causing headaches and coughs and, in the past 4 weeks, had experienced difficulty breathing. In the multivariate model, after adjusting for sociodemographic characteristics and other factors, only experiencing coughs and headaches increased the odds of supporting a completely tobacco-free campus, up to 2.5- and 1.9-fold, respectively.

    CONCLUSIONS: Coughs and headaches due to other people smoking at work enhances support for a completely tobacco-free campus among non-smokers.

    MeSH terms: Adult; Attitude to Health; Cross-Sectional Studies; Developing Countries; Female; Humans; Malaysia; Male; Surveys and Questionnaires; Smoking/adverse effects*; Students/legislation & jurisprudence*; Tobacco; Tobacco Smoke Pollution/legislation & jurisprudence*; Universities/legislation & jurisprudence*; Workplace/legislation & jurisprudence; Tobacco Use/legislation & jurisprudence*
  9. Tan YH, Sidik SM, Syed Husain SN, Lye MS, Chong PP
    Asian Pac J Cancer Prev, 2016;17(1):57-64.
    PMID: 26838255
    BACKGROUND: Tobacco smoking is considered a risk factor for cervical cancer development due to the presence of tobacco based carcinogenic metabolites in cervical cells of female smokers. In this study, we investigated the role of the T3801C (MspI) polymorphism of CYP1A1, a gene encoding an enzyme necessary for the initiation of tobacco based carcinogen metabolism, on cervical cancer risk. The T to C substitution may alter CYP1A1 activities, potentially elevating cervical cancer risk. Since results of gene-disease association studies vary according to the study population, the multi-ethnic population of Malaysia provides an excellent representative cohort for identifying and comparing the cervical cancer risk among the 3 major ethnics in Southeast Asia in relation to CYP1A1 MspI polymorphism.

    MATERIALS AND METHODS: A total of 195 Thin Prep Pap smear samples from HPV negative and cancer free females were randomly selected as controls while 106 formalin fixed paraffin embedded samples from females with invasive cervical cancer were randomly selected for the cases group. The polymorphisms were identified using restriction fragment length polymorphism (RFLP) PCR.

    RESULTS: We found no significant associations between CYP1A1 MspI polymorphism and cervical cancer in the general Malaysian female population. However, upon ethnic stratification, the variant C/C genotype was significantly associated with a 4.66-fold increase in cervical cancer risk in Malay females (95% CI= 1.21-17.9; p=0.03). No significant association was observed in the Chinese and Indian females. Additionally, there were no significant associations in the dominant model and allele frequency model analysis in both the general and ethnically stratified female population of Malaysia.

    CONCLUSIONS: Our findings suggest that the C/C genotype of CYP1A1 MspI polymorphism is associated with the development of cervical carcinoma in the Malay females of Malaysia.

    MeSH terms: Adult; Aged; Aged, 80 and over; Uterine Cervical Neoplasms/genetics*; Ethnic Groups/genetics*; Female; Gene Frequency/genetics; Genotype; Humans; Malaysia; Middle Aged; Polymorphism, Restriction Fragment Length/genetics*; Risk Factors; Case-Control Studies; Cytochrome P-450 CYP1A1/genetics*; Genetic Predisposition to Disease/genetics; Young Adult
  10. Jaiprakash H, Min AK, Ghosh S
    Korean J Med Educ, 2016 Mar;28(1):123-5.
    PMID: 26838577 DOI: 10.3946/kjme.2016.18
    This paper is aimed at finding if there was a change of correlation between the written test score and tutors' performance test scores in the assessment of medical students during a problem-based learning (PBL) course in Malaysia. This is a cross-sectional observational study, conducted among 264 medical students in two groups from November 2010 to November 2012. The first group's tutors did not receive tutor training; while the second group's tutors were trained in the PBL process. Each group was divided into high, middle and low achievers based on their end-of-semester exam scores. PBL scores were taken which included written test scores and tutors' performance test scores. Pearson correlation coefficient was calculated between the two kinds of scores in each group. The correlation coefficient between the written scores and tutors' scores in group 1 was 0.099 (p<0.001) and for group 2 was 0.305 (p<0.001). The higher correlation coefficient in the group where tutors received the PBL training reinforces the importance of tutor training before their participation in the PBL course.
    MeSH terms: Achievement*; Cross-Sectional Studies; Curriculum*; Education, Medical, Undergraduate*; Educational Measurement*; Humans; Malaysia; Students, Medical*; Problem-Based Learning*
  11. Singh V, Elamvazuthi I, Jeoti V, George J, Swain A, Kumar D
    Biomed Eng Online, 2016;15:13.
    PMID: 26838596 DOI: 10.1186/s12938-016-0129-6
    Anterior talofibular ligament (ATFL) is considered as the weakest ankle ligament that is most prone to injuries. Ultrasound imaging with its portable, non-invasive and non-ionizing radiation nature is increasingly being used for ATFL diagnosis. However, diagnosis of ATFL injuries requires its segmentation from ultrasound images that is a challenging task due to the existence of homogeneous intensity regions, homogeneous textures and low contrast regions in ultrasound images. To address these issues, this research has developed an efficient ATFL segmentation framework that would contribute to accurate and efficient diagnosis of ATFL injuries for clinical evaluation.
  12. Chang HC, Sun T, Sultana N, Lim MM, Khan TH, Ismail AF
    Mater Sci Eng C Mater Biol Appl, 2016 Apr 1;61:396-410.
    PMID: 26838866 DOI: 10.1016/j.msec.2015.12.074
    In the current study, electrospinning technique was used to fabricate composite membranes by blending of a synthetic polymer, polylactic acid (PLA) and a natural polymer, poly(3-hydroxybutyrate-co-3-hydroxyvalerate), PHBV. Conductive membranes were prepared by dipping PLA/PHBV electrospun membranes into poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (
    MeSH terms: Biocompatible Materials/pharmacology; Biocompatible Materials/chemistry; Cell Line; Cell Survival/drug effects; Electric Conductivity; Humans; Microscopy, Electron, Scanning; Polyesters/chemistry*; Polystyrenes/chemistry*; Spectrometry, X-Ray Emission; Surface Properties; Thiophenes/chemistry*; Porosity; Wettability; Microscopy, Atomic Force; Cell Proliferation/drug effects
  13. Mansouri N, SamiraBagheri
    Mater Sci Eng C Mater Biol Appl, 2016 Apr 1;61:906-21.
    PMID: 26838922 DOI: 10.1016/j.msec.2015.12.094
    The actual in vivo tissue scaffold offers a three-dimensional (3D) structural support along with a nano-textured surfaces consist of a fibrous network in order to deliver cell adhesion and signaling. A scaffold is required, until the tissue is entirely regenerated or restored, to act as a temporary ingrowth template for cell proliferation and extracellular matrix (ECM) deposition. This review depicts some of the most significant three dimensional structure materials used as scaffolds in various tissue engineering application fields currently being employed to mimic in vivo features. Accordingly, some of the researchers' attempts have envisioned utilizing graphene for the fabrication of porous and flexible 3D scaffolds. The main focus of this paper is to evaluate the topographical and topological optimization of scaffolds for tissue engineering applications in order to improve scaffolds' mechanical performances.
    MeSH terms: Biocompatible Materials/pharmacology; Biocompatible Materials/chemistry; Cell Adhesion/drug effects; Extracellular Matrix/metabolism; Extracellular Matrix/chemistry; Graphite/chemistry; Humans; Polymers/chemistry; Porosity; Tissue Engineering*; Tissue Scaffolds/chemistry*
  14. Ahmad W, Jantan I, Kumolosasi E, Bukhari SN
    Food Funct, 2016 Mar 16;7(3):1380-9.
    PMID: 26839149 DOI: 10.1039/c5fo01531f
    Standardized extract of Tinospora crispa has been shown to exhibit immunostimulatory effects on innate immune responses in Wistar-Kyoto rats by enhancing neutrophil and T cell-mediated immunity. In this study the immunostimulatory effects of T. crispa were further investigated on the cellular immune response by determining its effect on nitric oxide (NO) production ability, peritoneal macrophage phagocytosis and delayed type hypersensitivity (DTH), whereas the humoral immune response was evaluated through the measurement of serum immunoglobulins (IgG and IgM) and serum lysozyme levels. Male Balb/c mice were immunized with 200 μL of 5 × 10(9) sheep red blood cells (sRBCs) per mL on day 0 and orally administered with 50, 100 and 200 mg per kg of ethanol extract of T. crispa for 14 days. Syringin and magnoflorine were qualitatively and quantitatively analyzed in the extract as chemical markers by using a validated reversed-phase high performance liquid chromatography method. T. crispa extract (TCE) considerably improved the peritoneal macrophages' ability to engulf FITC-labeled E. coli in a dose-dependent manner. TCE also dose-dependently promoted NO production in peritoneal macrophages activated by a lipopolysaccharide (LPS) and markedly potentiated the sRBS-induced swelling rate of the mice paw in DTH. The extract significantly enhanced the level of serum immunoglobulins, showing maximum activity at 100 mg kg(-1). Compared to the control groups, the serum lysozyme level and myeloperoxidase (MPO) activity were significantly higher in extract-treated groups. These findings suggest that T. crispa possesses strong immunostimulatory activities and might act as a natural immunomodulator as well as a potential nutraceutical for the modulation of the immune response.
  15. Low VL, Takaoka H, Pramual P, Adler PH, Ya'cob Z, Huang YT, et al.
    Sci Rep, 2016 Feb 03;6:20346.
    PMID: 26839292 DOI: 10.1038/srep20346
    Perspicuous assessments of taxonomic boundaries and discovery of cryptic taxa are of paramount importance in interpreting ecological and evolutionary phenomena among black flies (Simuliidae) and combating associated vector-borne diseases. Simulium tani Takaoka & Davies is the largest and perhaps the most taxonomically challenging species complex of black flies in the Oriental Region. We use a DNA sequence-based method to delineate currently recognized chromosomal and morphological taxa in the S. tani complex on the Southeast Asian mainland and Taiwan, while elucidating their phylogenetic relationships. A molecular approach using multiple genes, coupled with morphological and chromosomal data, supported recognition of cytoform K and morphoform 'b' as valid species; indicated that S. xuandei, cytoform L, and morphoform 'a' contain possible cryptic species; and suggested that cytoform B is in the early stages of reproductive isolation whereas lineage sorting is incomplete in cytoforms A, C, and G.
    MeSH terms: Animals; Malaysia; Phylogeny; Simuliidae/classification*; Simuliidae/genetics; Simuliidae/isolation & purification*; Taiwan; Thailand; Genetic Variation; Vietnam; Genes, Insect*; Sequence Analysis, DNA/methods*; Phylogeography
  16. Zainudin LD, Abdul Hafidz MI, Zakaria AF, Mohd Zim MA, Ismail AI, Abdul Rani MF
    Respirol Case Rep, 2016 Mar;4(1):19-21.
    PMID: 26839696 DOI: 10.1002/rcr2.143
    We report a case of a 34-year-old lady with past history of asthma and pulmonary tuberculosis, who presented 5 weeks pregnant with acute dyspnea. Her chest X-ray showed left-sided complete lung collapse and concomitant right-sided pneumothorax. The pneumothorax was initially managed conservatively with a chest tube but due to its persistence despite suction, was subsequently changed to a Pneumostat(TM), with which she was later discharged. She had a normal echocardiography (ejection fraction [EF] 67%) at 5 weeks of gestation but developed pulmonary hypertension (EF 55%, pulmonary arterial pressure 40.7 mmHg) as the pregnancy progressed. She delivered a healthy baby at 35 weeks via elective lower section caesarean section with spinal anesthesia. We followed her up postnatally and noted the presence of left-sided pulmonary embolism, hypoplastic left lung, and left pulmonary artery. The management of this complex case involved a multidisciplinary effort between general medical, respiratory, obstetric, and cardiothoracic teams.
    MeSH terms: Adult; Anesthesia, Spinal; Pulmonary Atelectasis; Cesarean Section; Female; Humans; Hypertension, Pulmonary; Lung; Patient Discharge; Pneumothorax; Pregnancy; Pulmonary Artery; Pulmonary Embolism; Stroke Volume; Suction; Tuberculosis, Pulmonary; X-Rays; Chest Tubes; Arterial Pressure
  17. Kong KW, Mat-Junit S, Aminudin N, Hassan FA, Ismail A, Abdul Aziz A
    PeerJ, 2016;4:e1628.
    PMID: 26839752 DOI: 10.7717/peerj.1628
    Barringtonia racemosa is a tropical plant with medicinal values. In this study, the ability of the water extracts of the leaf (BLE) and stem (BSE) from the shoots to protect HepG2 cells against oxidative damage was studied. Five major polyphenolic compounds consisting of gallic acid, ellagic acid, protocatechuic acid, quercetin and kaempferol were identified using HPLC-DAD and ESI-MS. Cell viability assay revealed that BLE and BSE were non-cytotoxic (cell viabilities >80%) at concentration less than 250 µg/ml and 500 µg/ml, respectively. BLE and BSE improved cellular antioxidant status measured by FRAP assay and protected HepG2 cells against H2O2-induced cytotoxicity. The extracts also inhibited lipid peroxidation in HepG2 cells as well as the production of reactive oxygen species. BLE and BSE could also suppress the activities of superoxide dismutase and catalase during oxidative stress. The shoots of B. racemosa can be an alternative bioactive ingredient in the prevention of oxidative damage.
  18. Badshah G, Liew SC, Zain JM, Ali M
    J Med Imaging (Bellingham), 2016 Jan;3(1):017001.
    PMID: 26839914 DOI: 10.1117/1.JMI.3.1.017001
    The open accessibility of Internet-based medical images in teleradialogy face security threats due to the nonsecured communication media. This paper discusses the spatial domain watermarking of ultrasound medical images for content authentication, tamper detection, and lossless recovery. For this purpose, the image is divided into two main parts, the region of interest (ROI) and region of noninterest (RONI). The defined ROI and its hash value are combined as watermark, lossless compressed, and embedded into the RONI part of images at pixel's least significant bits (LSBs). The watermark lossless compression and embedding at pixel's LSBs preserve image diagnostic and perceptual qualities. Different lossless compression techniques including Lempel-Ziv-Welch (LZW) were tested for watermark compression. The performances of these techniques were compared based on more bit reduction and compression ratio. LZW was found better than others and used in tamper detection and recovery watermarking of medical images (TDARWMI) scheme development to be used for ROI authentication, tamper detection, localization, and lossless recovery. TDARWMI performance was compared and found to be better than other watermarking schemes.
    MeSH terms: Communications Media; Ultrasonography; Internet; Data Compression
  19. Suresh Kumar R, Almansour AI, Arumugam N, Altaf M, Menéndez JC, Kumar RR, et al.
    Molecules, 2016 Jan 29;21(2):165.
    PMID: 26840282 DOI: 10.3390/molecules21020165
    The microwave-assisted three-component reactions of 3,5-bis(E)-arylmethylidene]tetrahydro-4(1H)-pyridinones, acenaphthenequinone and cyclic α-amino acids in an ionic liquid, 1-butyl-3-methylimidazolium bromide, occurred through a domino sequence affording structurally intriguing diazaheptacyclic cage-like compounds in excellent yields.
    MeSH terms: Acenaphthenes/chemistry; Acids, Heterocyclic/chemical synthesis*; Acids, Heterocyclic/chemistry; Catalysis; Imidazoles/chemistry; Microwaves; Pyridones/chemistry; Molecular Structure; Ionic Liquids/chemistry*
  20. Zubair S, Syed Yusoff SK, Fisal N
    Sensors (Basel), 2016;16(2):172.
    PMID: 26840312 DOI: 10.3390/s16020172
    The emergence of the Internet of Things and the proliferation of mobile wireless devices has brought the area of mobile cognitive radio sensor networks (MCRSN) to the research spot light. Notwithstanding the potentials of CRSNs in terms of opportunistic channel usage for bursty traffic, the effect of the mobility of resource-constrained nodes to route stability, mobility-induced spatio-temporal spectral opportunities and primary user (PU) protection still remain open issues that need to be jointly addressed. To this effect, this paper proposes a mobile reliable geographical forwarding routing (MROR) protocol. MROR provides a robust mobile framework for geographical forwarding that is based on a mobility-induced channel availability model. It presents a comprehensive routing strategy that considers PU activity (to take care of routes that have to be built through PU coverage), PU signal protection (by the introduction of a mobility-induced guard (mguard) distance) and the random mobility-induced spatio-temporal spectrum opportunities (for enhancement of throughput). It also addresses the issue of frequent route maintenance that arises when speeds of the mobile nodes are considered as a routing metric. As a result, simulation has shown the ability of MROR to reduce the route failure rate by about 65% as against other schemes. In addition, further results show that MROR can improve both the throughput and goodput at the sink in an energy-efficient manner that is required in CRSNs as against compared works.
    MeSH terms: Cognition; Computer Communication Networks; Health Resources; Internet; Cell Proliferation
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