Browse publications by year: 2013

  1. Toh RH, Lim PE, Seng CE, Adnan R
    Bioresour Technol, 2013 Sep;143:265-74.
    PMID: 23796608 DOI: 10.1016/j.biortech.2013.05.126
    The objectives of the study are to use immobilized acclimated biomass and immobilized biomass-powdered activated carbon (PAC) as a novel approach in the bioregeneration of granular activated carbon (GAC) loaded with phenol and o-cresol, respectively, and to compare the efficiency and rate of the bioregeneration of the phenolic compound-loaded GAC using immobilized and suspended biomasses under varying GAC dosages. Bioregeneration of GAC loaded with phenol and o-cresol, respectively, was conducted in batch system using the sequential adsorption and biodegradation approach. The results showed that the bioregeneration efficiency of GAC loaded with phenol or o-cresol was basically the same irrespective of whether the immobilized or suspended biomass was used. Nonetheless, the duration for bioregeneration was longer under immobilized biomass. The beneficial effect of immobilized PAC-biomass for bioregeneration is the enhancement of the removal rate of the phenolic compounds via adsorption and the shortening of the bioregeneration duration.
    MeSH terms: Carbon/chemistry*; Cresols/chemistry*; Microscopy, Electron, Scanning; Biomass*; Phenol/chemistry*
  2. Rahman AK, Sulaiman FN
    Trop Doct, 2013 Apr;43(2):83-5.
    PMID: 23796679 DOI: 10.1177/0049475513485733
    Severe pulmonary involvement in malaria has been frequently reported in cases of Plasmodium falciparum infection but rarely in vivax malaria. We look at a case of a 38-year-old man living in a malaria endemic area who presented with acute respiratory distress syndrome (ARDS) caused by P. vivax. DNA polymerase chain reaction (PCR) confirmed that it was not a mixed infection. After specific antimalarial therapy and intensive supportive care, the patient was discharged from the hospital. This case illustrates that P. vivax-induced ARDS is not uncommon and should be readily recognized by the treating physicians. A confirmatory test with PCR is required in order to exclude P. falciparum co-infection.
    MeSH terms: Adult; Diagnosis, Differential; Humans; Male; Recurrence; Respiratory Distress Syndrome, Adult/diagnosis*; Respiratory Distress Syndrome, Adult/etiology; Respiratory Distress Syndrome, Adult/therapy; Malaria, Vivax/complications; Malaria, Vivax/diagnosis*; Malaria, Vivax/therapy
  3. Abushammala MF, Basri NE, Elfithri R
    Environ Monit Assess, 2013 Dec;185(12):9967-78.
    PMID: 23797636
    Methane (CH₄) emissions and oxidation were measured at the Air Hitam sanitary landfill in Malaysia and were modeled using the Intergovernmental Panel on Climate Change waste model to estimate the CH₄ generation rate constant, k. The emissions were measured at several locations using a fabricated static flux chamber. A combination of gas concentrations in soil profiles and surface CH₄ and carbon dioxide (CO₂) emissions at four monitoring locations were used to estimate the CH₄ oxidation capacity. The temporal variations in CH₄ and CO₂ emissions were also investigated in this study. Geospatial means using point kriging and inverse distance weight (IDW), as well as arithmetic and geometric means, were used to estimate total CH₄ emissions. The point kriging, IDW, and arithmetic means were almost identical and were two times higher than the geometric mean. The CH₄ emission geospatial means estimated using the kriging and IDW methods were 30.81 and 30.49 gm(−2) day(−1), respectively. The total CH₄ emissions from the studied area were 53.8 kg day(−1). The mean of the CH₄ oxidation capacity was 27.5 %. The estimated value of k is 0.138 year(−1). Special consideration must be given to the CH₄ oxidation in the wet tropical climate for enhancing CH₄ emission reduction.
    MeSH terms: Air Pollutants/analysis*; Air Pollution/statistics & numerical data; Environmental Monitoring; Malaysia; Methane/analysis*; Oxidation-Reduction; Soil/chemistry*; Tropical Climate; Waste Disposal Facilities*
  4. George KT, Anand R, Ganasalingam S, Zain RB
    J Oral Maxillofac Pathol, 2013 Jan;17(1):106-9.
    PMID: 23798841 DOI: 10.4103/0973-029X.110694
    Langerhans cell histiocytosis (LCH) is a rare proliferative disorder in which the pathologic Langerhans cells infiltrate and destroy the tissues. Patients with LCH present varied clinical manifestations. Cutaneous lesions in LCH manifest as vesiculopapular eruptions that often mimic various infectious diseases particularly in infants. We present a case of a female infant with an ulcerative lesion intraorally. The baby was asymptomatic otherwise. A detailed history revealed the presence of cutaneous lesions that was overlooked by her parents.

    CONCLUSION: This report tries to briefly discuss the current concepts regarding the etiology of LCH. An attempt has been made to emphasis the need for a through systemic examination. The protocol of investigative procedures to be adopted in LCH is also discussed.

    MeSH terms: Exanthema; Female; Histiocytosis, Langerhans-Cell; Humans; Infant; Langerhans Cells; Parents; Skin Diseases; Rare Diseases
  5. Hamid RA, Kee TH, Othman F
    Pharmacognosy Res, 2013 Apr;5(2):129-33.
    PMID: 23798889 DOI: 10.4103/0974-8490.110544
    Acanthopanax trifoliatus is a ginseng-like plant, which has been widely used to treat various diseases including inflammatory-related diseases.
    MeSH terms: Complementary Therapies; Panax; Plant Extracts; Eleutherococcus
  6. Bhore SJ, Preveena J, Kandasamy KI
    Pharmacognosy Res, 2013 Apr;5(2):134-7.
    PMID: 23798890 DOI: 10.4103/0974-8490.110545
    Resins and gums are used in traditional medicine and do have potential applications in pharmacy and medicine. Agarwood is the fragrant resinous wood, which is an important commodity from Aquilaria species and has been used as a sedative, analgesic, and digestive in traditional medicine. Endophytic bacteria are potentially important in producing pharmaceutical compounds found in the plants. Hence, it was important to understand which types of endophytic bacteria are associated with pharmaceutical agarwood-producing Aquilaria species.
    MeSH terms: Analgesics; Bacteria; Hypnotics and Sedatives; Medicine, Traditional; Pharmaceutical Services; Pharmacies; Pharmacy; Wood; Thymelaeaceae
  7. Yeap SK, Omar AR, Ho WY, Beh BK, Ali AM, Alitheen NB
    PMID: 23800124 DOI: 10.1186/1472-6882-13-145
    Rhaphidophora korthalsii (Araceae) is a root-climber plant which has been widely used in Chinese traditional medicine for cancer and skin disease treatment. Previous reports have recorded its immunomodulatory effects on mice splenocyte and human peripheral blood. This study investigated the potential immunostimulatory effect of Rhaphidophora korthalsii on human PBMC enriched NK cell.
    MeSH terms: Cells, Cultured; Cytotoxicity, Immunologic/drug effects*; Humans; Killer Cells, Natural/cytology; Killer Cells, Natural/drug effects*; Killer Cells, Natural/immunology*; Lymphocyte Activation; Plant Extracts/isolation & purification; Plant Extracts/pharmacology*; T-Lymphocytes/cytology; T-Lymphocytes/drug effects; T-Lymphocytes/immunology; Gene Expression/drug effects; Cytokines/genetics; Cytokines/immunology*; Araceae/chemistry*; Cell Proliferation/drug effects*; Granzymes/genetics; Granzymes/immunology; Perforin/genetics; Perforin/immunology
  8. Badurdeen S, Valladares DB, Farrar J, Gozzer E, Kroeger A, Kuswara N, et al.
    BMC Public Health, 2013 Jun 24;13:607.
    PMID: 23800243 DOI: 10.1186/1471-2458-13-607
    BACKGROUND: The increasing frequency and intensity of dengue outbreaks in endemic and non-endemic countries requires a rational, evidence based response. To this end, we aimed to collate the experiences of a number of affected countries, identify strengths and limitations in dengue surveillance, outbreak preparedness, detection and response and contribute towards the development of a model contingency plan adaptable to country needs.

    METHODS: The study was undertaken in five Latin American (Brazil, Colombia, Dominican Republic, Mexico, Peru) and five in Asian countries (Indonesia, Malaysia, Maldives, Sri Lanka, Vietnam). A mixed-methods approach was used which included document analysis, key informant interviews, focus-group discussions, secondary data analysis and consensus building by an international dengue expert meeting organised by the World Health Organization, Special Program for Research and Training in Tropical Diseases (WHO-TDR).

    RESULTS: Country information on dengue is based on compulsory notification and reporting ("passive surveillance"), with laboratory confirmation (in all participating Latin American countries and some Asian countries) or by using a clinical syndromic definition. Seven countries additionally had sentinel sites with active dengue reporting, some also had virological surveillance. Six had agreed a formal definition of a dengue outbreak separate to seasonal variation in case numbers. Countries collected data on a range of warning signs that may identify outbreaks early, but none had developed a systematic approach to identifying and responding to the early stages of an outbreak. Outbreak response plans varied in quality, particularly regarding the early response. The surge capacity of hospitals with recent dengue outbreaks varied; those that could mobilise additional staff, beds, laboratory support and resources coped best in comparison to those improvising a coping strategy during the outbreak. Hospital outbreak management plans were present in 9/22 participating hospitals in Latin-America and 8/20 participating hospitals in Asia.

    CONCLUSIONS: Considerable variation between countries was observed with regard to surveillance, outbreak detection, and response. Through discussion at the expert meeting, suggestions were made for the development of a more standardised approach in the form of a model contingency plan, with agreed outbreak definitions and country-specific risk assessment schemes to initiate early response activities according to the outbreak phase. This would also allow greater cross-country sharing of ideas.

    MeSH terms: Asia/epidemiology; Dengue/epidemiology*; Disease Outbreaks*; Humans; Latin America/epidemiology; Population Surveillance/methods; Models, Statistical; Risk Assessment; Evidence-Based Medicine
  9. Amerizadeh A, Khoo BY, Teh AY, Golkar M, Abdul Karim IZ, Osman S, et al.
    BMC Infect Dis, 2013;13:287.
    PMID: 23800344 DOI: 10.1186/1471-2334-13-287
    Toxoplasma gondii is an obligate intracellular zoonotic parasite of the phylum Apicomplexa which infects a wide range of warm-blooded animals, including humans. In this study in-vivo induced antigens of this parasite was investigated using in-vivo induced antigen technology (IVIAT) and pooled sera from patients with serological evidence of acute infection.
    MeSH terms: Adsorption; Animals; Antibodies, Protozoan/immunology*; Antibodies, Protozoan/metabolism; Antigens, Protozoan/genetics; Antigens, Protozoan/immunology*; Biotechnology/methods*; Cercopithecus aethiops; Escherichia coli/genetics; Escherichia coli/metabolism; Immunoglobulin G/blood; Immunoglobulin G/immunology*; Immunoglobulin M/blood; Immunoglobulin M/immunology*; Recombinant Proteins/genetics; Recombinant Proteins/immunology; Recombinant Proteins/metabolism; Sensitivity and Specificity; Toxoplasma/genetics; Toxoplasma/immunology*; Toxoplasmosis/blood; Toxoplasmosis/immunology*; Toxoplasmosis/microbiology; Vero Cells; Gene Library; DNA, Complementary/genetics; DNA, Complementary/immunology; DNA, Complementary/metabolism; Real-Time Polymerase Chain Reaction
  10. Adam F, Muniandy L, Thankappan R
    J Colloid Interface Sci, 2013 Sep 15;406:209-16.
    PMID: 23800370 DOI: 10.1016/j.jcis.2013.05.066
    Titania and ceria incorporated rice husk silica based catalyst was synthesized via sol-gel method using CTAB and glycerol as surface directing agents at room temperature and labeled as RHS-50Ti10Ce. The catalyst was used to study the adsorption and photodegradation of methylene blue (MB) under UV irradiation. The powder XRD pattern of RHS-50Ti10Ce was much broader (2θ=25-30°) than that of the parent RHS (2θ=22°). The catalyst exhibited type IV isotherm with H3 hysteresis loop, and the TEM images showed partially ordered pore arrangements. The TGA-DTG thermograms confirmed the complete removal of the templates after calcination at 500°C. RHS-50Ti10Ce exhibited excellent adsorption capability with more than 99% removal of MB from a 40 mg L(-1) solution in just 15 min. It also decolorized an 80 mg L(-1) MB solution under UV irradiation in 210 min, which was comparable with the commercialized pure anatase TiO2.
    MeSH terms: Adsorption; Catalysis; Cerium/chemistry*; Methylene Blue/isolation & purification*; Photolysis*; Oryza/chemistry; Silicon Dioxide/chemistry*; Titanium/chemistry*; Water Pollutants, Chemical/isolation & purification*; Water Purification/methods*
  11. Fauziah SH, Emenike CU, Agamuthu P
    Waste Manag Res, 2013 Oct;31(10 Suppl):75-80.
    PMID: 23800442 DOI: 10.1177/0734242X13492840
    Pollutants put great stress on the environment, especially the aquatic ecosystem; therefore, the ease with which pollutants migrate in water is a subject of global concern. In this study, leachate from landfill that was analyzed with the objective of understanding the potential impact to the environment was tested on Pangasius sutchi. Heavy metals available at various concentrations in raw leachate samples of both closed and active landfills necessitated the determination of their degree of bioaccumulation in this fish species in order to enrich the risk data on toxicity of effluents. Zinc (3.2 µg g(-1)), iron (2.1 µg g(-1)) and chromium (0.24 µg g(-1)) detected in the fish within 96 h of acute exposure is of concern. A histopathology test on excised liver of P. sutchi indicated cellular disruption from normal stain. Heterogeneous effluents like leachate may affect not only groundwater but can endanger aquatic ecosystems, especially in some regions where improper waste disposal and treatment allow the flow of leachate into surface water courses. Though metals might be beneficial to organisms, the extent at which they can accumulate in leachate-exposed fish is a risk and can initiate metal toxicity in aquatic life.
    MeSH terms: Animals; Catfishes/metabolism*; Environmental Exposure*; Environmental Monitoring; Lethal Dose 50; Liver/drug effects; Water Pollutants, Chemical/toxicity*; Metals, Heavy/toxicity*; Waste Disposal Facilities
  12. Maran S, Lee YY, Xu S, Rajab NS, Hasan N, Syed Abdul Aziz SH, et al.
    World J Gastroenterol, 2013 Jun 21;19(23):3615-22.
    PMID: 23801863 DOI: 10.3748/wjg.v19.i23.3615
    To identify genes associated with gastric precancerous lesions in Helicobacter pylori (H. pylori)-susceptible ethnic Malays.
    MeSH terms: Adult; Aged; Female; Gastritis, Atrophic/diagnosis; Gastritis, Atrophic/ethnology; Gastritis, Atrophic/genetics*; Gastritis, Atrophic/microbiology; Gastroscopy; Gene Frequency; Humans; Malaysia/epidemiology; Male; Metaplasia; Middle Aged; Phenotype; Precancerous Conditions/diagnosis; Precancerous Conditions/ethnology; Precancerous Conditions/genetics*; Precancerous Conditions/microbiology; Predictive Value of Tests; Risk Factors; Stomach Neoplasms/diagnosis; Stomach Neoplasms/ethnology; Stomach Neoplasms/genetics*; Stomach Neoplasms/microbiology; Chi-Square Distribution; Case-Control Studies; Helicobacter pylori/pathogenicity*; Helicobacter Infections/complications*; Helicobacter Infections/diagnosis; Helicobacter Infections/ethnology; Helicobacter Infections/microbiology; Genetic Predisposition to Disease; Polymorphism, Single Nucleotide*; Asian Continental Ancestry Group/genetics*
  13. Ahmad Aizat AA, Siti Nurfatimah MS, Aminudin MM, Ankathil R
    World J Gastroenterol, 2013 Jun 21;19(23):3623-8.
    PMID: 23801864 DOI: 10.3748/wjg.v19.i23.3623
    To investigate the risk association of xeroderma pigmentosum group C (XPC) Lys939Gln polymorphism alone and in combination with cigarette smoking on colorectal cancer (CRC) predisposition.
    MeSH terms: Adult; Aged; Aged, 80 and over; DNA-Binding Proteins/genetics*; Female; Gene Frequency; Heterozygote; Homozygote; Humans; Malaysia/epidemiology; Male; Middle Aged; Phenotype; Risk Factors; Smoking/adverse effects*; Smoking/ethnology; Colorectal Neoplasms/ethnology; Colorectal Neoplasms/genetics*; Chi-Square Distribution; Logistic Models; Odds Ratio; Case-Control Studies; Risk Assessment; Genetic Predisposition to Disease; Polymorphism, Single Nucleotide*; Asian Continental Ancestry Group/genetics*
  14. Yusoff H, Wan Daud WN, Ahmad Z
    Iran J Public Health, 2013;42(5):467-71.
    PMID: 23802103
    This study was carried out to compare the effect between nutrition education intervention and non-nutrition education intervention on awareness regarding iron deficiency among schooling adolescents in Tanah Merah, one of rural district in Kelantan, Malaysia.
    MeSH terms: Adolescent; Health Education; Humans; Malaysia; Nutritional Status; Anemia, Iron-Deficiency; Nutrition Therapy
  15. Nantha YS
    J Health Organ Manag, 2013;27(2):266-72.
    PMID: 23802402
    In the light of an increasing healthcare burden, this paper seeks to offer insight about how intrinsic motivation could play a pivotal role in improving the pre-existing healthcare service delivery systems by altering clinician behaviour. The paper argues the case for four salient dimensions worth exploring through the lens of intrinsic motivation--non-financial incentives, positive affective states, organizational culture and prescribing quality.
    MeSH terms: Clinical Competence*; Communication; Humans; Motivation; Physician-Patient Relations; Physicians/psychology*; Quality of Health Care/standards*; Quality of Health Care/trends; Reward; Organizational Culture; Professional Autonomy*; Patient Satisfaction*
  16. Takaoka H, Srisuka W, Saeung A, Choochote W
    J Med Entomol, 2013 May;50(3):493-500.
    PMID: 23802443
    Simulium (Asiosimulium) furvum sp. nov. (Diptera: Simuliidae) is described from female, male, pupal, and larval specimens collected from Maewa National Park, Lampang Province, Thailand. This new species represents the fourth member of the subgenus Asiosimulium Takaoka & Chochoote, one of two small black fly subgenera endemic in the Oriental Region. It is characterized by a pear-shaped spermatheca in the female; a ventral plate in the male with a laterally compressed median keel directed ventrally and with a deep notch posteromedially, and aedeagal membrane with stout spines; and by 22 gill filaments in the pupa. Taxonomic notes are provided to separate this new species from three known species, Simulium (Asiosimulium) oblongum Takaoka & Choochote and Simulium (Asiosimulium) wanchaii Takaoka & Choochote, both from Thailand, and Simulium (Asiosimulium) suchitrae Takaoka from Nepal.
    MeSH terms: Animals; Female; Larva/anatomy & histology; Larva/classification; Male; Pupa/anatomy & histology; Pupa/classification; Simuliidae/anatomy & histology*; Simuliidae/classification*; Simuliidae/growth & development; Thailand
  17. Nor NA, Murat NA, Yusof ZY, Gamboa AB
    Int J Dent Hyg, 2013 Nov;11(4):280-6.
    PMID: 23802751 DOI: 10.1111/idh.12038
    To describe the perceptions of senior dental officers (SDOs) on the roles of dental therapists (DTs) and their education needs in Malaysia.
    MeSH terms: Adult; Attitude of Health Personnel*; Child; Child, Preschool; Clinical Competence; Cross-Sectional Studies; Dental Auxiliaries/education*; Dental Auxiliaries/organization & administration; Dental Care/organization & administration; Dental Prophylaxis; Dental Restoration, Permanent; Dentists/psychology*; Female; Health Promotion; Health Services Needs and Demand*; Humans; Malaysia; Male; Mandibular Nerve; Nerve Block; Oral Health; Patient Care Team/organization & administration; Physical Examination; Preventive Dentistry; Root Canal Therapy; Dental Scaling; Tooth Extraction; Delegation, Professional
  18. Ching SM, Zakaria ZA, Paimin F, Jalalian M
    BMC Complement Altern Med, 2013 Jun 26;13:148.
    PMID: 23802882 DOI: 10.1186/1472-6882-13-148
    BACKGROUND: Limited study on the use of complementary alternative medicine (CAM) among patients with diabetes mellitus (DM), particularly in primary -care settings. This study seeks to understand the prevalence, types, expenditures, attitudes, beliefs, and perceptions of CAM use among patients with DM visiting outpatient primary care clinics.

    METHODS: This is a descriptive, cross-sectional study of 240 diabetic patients. CAM is defined as a group of diverse medical and healthcare systems, practices, and products that are not generally considered part of conventional Western medicine. Data analysis was done using SPSS v. 19 and multiple logistic regressions were used to identify predictors of CAM use.

    RESULTS: The prevalence of CAM use was 62.5 percent. Female were 1.8 times more likely than male in using CAM. Malays (75%) were the most frequent users, followed Indians (18%) and Chinese (6%). Biological therapy (50.0%) were the most widely used, followed by manipulative-body based systems (9.2%), energy system (8.8%), alternative medicine systems (4.6%) and mind-body system (1.7%). In biological therapy, a total of 30.4 percent, 24.2 percent, 13.3 percent, and 7.9 percent of diabetic patients consumed bitter gourd (Momordica Charantia), followed by Misai Kucing (Orthosiphon Stamineus Benth), garlic (Allium Sativum), and Sabah snake grass (Clinacanthus Nutans Lindau) respectively. The mean of the expenditure on CAM usage was RM 52.8 ± 101.9 (US $16.9 ± 32.5) per month. According to multiple logistic regression analyses, being Muslim (OR 5.258, 95 percent CI 2.952-9.368) had significant positive association with CAM use.

    CONCLUSIONS: The prevalence of CAM use was high among diabetics. Islam faith is predictor for CAM use among Type 2 DM patients. The most-common herbs used were bitter gourd (Momordica Charantia) and Misai Kucing (Orthosiphon Stamineus, Benth). Further studies on the anti-glycemic activity of the isolated compound may be needed in the future.

    MeSH terms: Adult; Aged; Complementary Therapies/psychology; Complementary Therapies/statistics & numerical data*; Cross-Sectional Studies; Diabetes Mellitus, Type 2/drug therapy; Diabetes Mellitus, Type 2/ethnology; Diabetes Mellitus, Type 2/psychology; Diabetes Mellitus, Type 2/therapy*; Female; Humans; Malaysia/ethnology; Male; Middle Aged; Plant Extracts/therapeutic use; Primary Health Care
  19. Cooper EE
    Ecol Food Nutr, 2013;52(4):294-316.
    PMID: 23802913 DOI: 10.1080/03670244.2012.707419
    Hunger is complex, encompassing experiences ranging from a family's forced acceptance of a monotonous diet to individual physiological pain. I evaluate the Household Food Insecurity Access Scale (HFIAS) as a means of capturing the universal elements of hunger without doing violence to its culturally-specific expressions within two Malay communities. The HFIAS is assessed conceptually by comparing its assumptions and concept-to-measurement gap with competing indicators and practically with respect to village conditions and practices. This case study recommends the HFIAS for this site and for communities that similarly lack maternal buffering, while highlighting the unique features of the local hunger experience.
    MeSH terms: Adult; Child; Culture*; Diet*; Diet Surveys/standards*; Family Characteristics; Female; Food Habits*; Food Supply*; Humans; Hunger*; Income; Malaysia; Male; Surveys and Questionnaires; Residence Characteristics; Rural Population; Malnutrition*; Cultural Competency
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