Browse publications by year: 2013

  1. Soon SS, Lim HY, Lopes G, Ahn J, Hu M, Ibrahim HM, et al.
    Asian Pac J Cancer Prev, 2013;14(4):2159-65.
    PMID: 23725106
    Cancer registries help to establish and maintain cancer incidence reporting systems, serve as a resource for investigation of cancer and its causes, and provide information for planning and evaluation of preventive and control programs. However, their wider role in directly enhancing oncology drug access has not been fully explored. We examined the value of cancer registries in oncology drug access in the Asia-Pacific region on three levels: (1) specific registry variable types; (2) macroscopic strategies on the national level; and (3) a regional cancer registry network. Using literature search and proceedings from an expert forum, this paper covers recent cancer registry developments in eight economies in the Asia-Pacific region - Australia, China, Hong Kong, Malaysia, Singapore, South Korea, Taiwan, and Thailand - and the ways they can contribute to oncology drug access. Specific registry variables relating to demographics, tumor characteristics, initial treatment plans, prognostic markers, risk factors, and mortality help to anticipate drug needs, identify high-priority research area and design access programs. On a national level, linking registry data with clinical, drug safety, financial, or drug utilization databases allows analyses of associations between utilization and outcomes. Concurrent efforts should also be channeled into developing and implementing data integrity and stewardship policies, and providing clear avenues to make data available. Less mature registry systems can employ modeling techniques and ad-hoc surveys while increasing coverage. Beyond local settings, a cancer registry network for the Asia-Pacific region would offer cross-learning and research opportunities that can exert leverage through the experiences and capabilities of a highly diverse region.
    MeSH terms: Antineoplastic Agents/therapeutic use*; Asia; Developing Countries; Humans; Neoplasms/drug therapy*; Registries*; Treatment Outcome; Access to Information*
  2. Isa MR, Moy FM, Abdul Razack AH, Zainuddin ZM, Zainal NZ
    Asian Pac J Cancer Prev, 2013;14(4):2237-42.
    PMID: 23725119
    BACKGROUND: The aim of this study was to determine the impact of applied progressive muscle relaxation training on the levels of depression, anxiety and stress among prostate cancer patients.

    MATERIALS AND METHODS: A quasi-experimental study was conducted at the University Malaya Medical Centre (UMMC) and Universiti Kebangsaan Malaysia Medical Centre (UKMMC) over six months. Prostate cancer patients from UMMC received the intervention and patients from UKMMC were taken as controls. The level of depression, anxiety and stress were measured using Depression, Anxiety Stress Scales - 21 (DASS-21).

    RESULTS: A total of 77 patients from the UMMC and 78 patients from the UKMMC participated. At the end of the study, 90.9% and 87.2% of patients from the UMMC and UKMMC groups completed the study respectively. There were significant improvements in anxiety (p<0.001, partial ?2=0.198) and stress (p<0.001, partial ?2=0.103) at the end of the study in those receiving muscle training. However, there was no improvement in depression (p=0.956).

    CONCLUSIONS: The improvement in anxiety and stress showed the potential of APMRT in the management of prostate cancer patients. Future studies should be carried out over a longer duration to provide stronger evidence for the introduction of relaxation therapy among prostate cancer patients as a coping strategy to improve their anxiety and stress.

    MeSH terms: Adaptation, Psychological; Aged; Anxiety/diagnosis; Anxiety/etiology; Anxiety/prevention & control*; Depression/diagnosis; Depression/etiology; Depression/prevention & control*; Follow-Up Studies; Humans; Male; Muscle Relaxation*; Prognosis; Prostatic Neoplasms/complications; Prostatic Neoplasms/psychology*; Relaxation Therapy*; Stress, Physiological*; Case-Control Studies
  3. Phua Chee Ee V, Tan BS, Tan AL, Eng KY, Ng BS, Ung NM
    Asian Pac J Cancer Prev, 2013;14(4):2243-8.
    PMID: 23725120
    BACKGROUND: To compare the dosimetric coverage of target volumes and organs at risk in the radical treatment of nasopharyngeal carcinoma (NPC) between intensity-modulated radiotherapy (IMRT) and three- dimensional conformal radiotherapy (3DCRT).

    MATERIALS AND METHODS: Data from 10 consecutive patients treated with IMRT from June-October 2011 in Penang General Hospital were collected retrospectively for analysis. For each patient, dose volume histograms were generated for both the IMRT and 3DCRT plans using a total dose of 70Gy. Comparison of the plans was accomplished by comparing the target volume coverage (5 measures) and sparing of organs at risk (17 organs) for each patient using both IMRT and 3DCRT. The means of each comparison target volume coverage measures and organs at risk measures were obtained and tested for statistical significance using the paired Student t-test.

    RESULTS: All 5 measures for target volume coverage showed marked dosimetric superiority of IMRT over 3DCRT. V70 and V66.5 for PTV70 showed an absolute improvement of 39.3% and 24.1% respectively. V59.4 and V56.4 for PTV59.4 showed advantages of 18.4% and 16.4%. Moreover, the mean PTV70 dose revealed a 5.1 Gy higher dose with IMRT. Only 4 out of 17 organs at risk showed statistically significant difference in their means which were clinically meaningful between the IMRT and 3DCRT techniques. IMRT was superior in sparing the spinal cord (less 5.8Gy), V30 of right parotid (less 14.3%) and V30 of the left parotid (less 13.1%). The V55 of the left cochlea was lower with 3DCRT (less 44.3%).

    CONCLUSIONS: IMRT is superior to 3DCRT due to its dosimetric advantage in target volume coverage while delivering acceptable doses to organs at risk. A total dose of 70Gy with IMRT should be considered as a standard of care for radical treatment of NPC.

    MeSH terms: Adult; Aged; Carcinoma; Female; Follow-Up Studies; Humans; Male; Middle Aged; Nasopharyngeal Neoplasms/pathology; Nasopharyngeal Neoplasms/radiotherapy*; Neoplasm Staging; Prognosis; Radiotherapy Dosage; Radiotherapy Planning, Computer-Assisted*; Retrospective Studies; Radiotherapy, Conformal*; Imaging, Three-Dimensional; Radiotherapy, Intensity-Modulated*
  4. Kadir EA, Sulaiman SA, Yahya NK, Othman NH
    Asian Pac J Cancer Prev, 2013;14(4):2249-54.
    PMID: 23725121
    The study was conducted to determine the effect of Malaysian jungle Tualang Honey (TH) on development of breast cancer induced by the carcinogen 7,12-dimethylbenz(α)anthracene (DMBA) in rats. Forty nulliparous female Sprague-Dawley rats were given 80 mg/kg DMBA then randomly divided into four groups: Group 1 served as a Control while Groups 2, 3 and 4 received 0.2, 1.0 or 2.0 g/kg bodyweight/day of TH, respectively, for 150 days. Results showed that breast cancers in the TH-treated groups had slower size increment and smaller mean tumor size (≤ 2 cm3) compared to Controls (≤ 8 cm3). The number of cancers developing in TH-treated groups was also significantly fewer (P<0.05). Histological grading showed majority of TH-treated group cancers to be of grade 1 and 2 compared to grade 3 in controls. There was an increasing trend of apoptotic index (AI) seen in TH-treated groups with increasing dosage of Tualang Honey, however, the mean AI values of all TH-treated groups were not significantly different from the Control value (p>0.05). In conclusion, Tualang Honey exerted positive modulation effects on DMBA-induced breast cancers in rats in this preliminary study.
    MeSH terms: Animals; Carcinogens/toxicity; Female; Honey/statistics & numerical data*; Mammary Neoplasms, Experimental/chemically induced; Mammary Neoplasms, Experimental/pathology; Mammary Neoplasms, Experimental/prevention & control*; 9,10-Dimethyl-1,2-benzanthracene/toxicity; Blotting, Western; Rats, Sprague-Dawley; Apoptosis/drug effects*; Vascular Endothelial Growth Factor A/metabolism; Cell Proliferation; Rats
  5. Yeong LT, Hamid RA, Yazan LS, Khaza'ai H
    Asian Pac J Cancer Prev, 2013;14(4):2301-5.
    PMID: 23725131
    Ardisia crispa (Family: Myrsinaceae) is an evergreen, fruiting shrub that has been traditionally used as folklore medicine. Despite a scarcity of research publications, we have succeeded in showing suppressive effects on murine skin papillomagenesis. In extension, the present research was aimed at determining the effect of a quinone-rich fraction (QRF) isolated from the same root hexane extract on both initiation and promotion stages of carcinogenesis, at the selected dose of 30 mg/kg. Mice (groups I-IV) were initiated with a single dose of 7,12-dimethylbenz(α)anthracene (DMBA, 100 μg/100 μl) followed by repeated promotion of croton oil (1%) twice weekly for 20 weeks. In addition, group I (anti-initiation) received QRF 7 days before and after DMBA; group II (anti-promotion) received QRF 30 minutes before each croton oil application; group III (anti-initiation/ promotion) was treated with QRF as a combination of group I and II. A further two groups served as vehicle control (group V) and treated control (group VI). As carcinogen control, group IV showed the highest tumor volume (8.79±5.44) and tumor burden (3.60±1.17). Comparatively, group III revealed only 20% of tumor incidence, tumor burden (3.00±1.00) and tumor volume (2.40±1.12), which were significantly different from group IV. Group II also showed significant reduction of tumor volume (3.11), tumor burden (3.00) and tumor incidence (11.11%), along with prominent increase of latency period of tumor formation (week 12). Group I, nonetheless, demonstrated marked increment of tumor incidence by 40% with prompted latency period of tumor formation (week 7). No tumor formation was observed in groups V and VI. This study provided clear evidence of inhibitory effects of QRF during promotion period which was in agreement with our previous findings. The mechanism(s) underlying such effects have yet to be elucidated.
    MeSH terms: Animals; Carcinogens/toxicity; Cell Transformation, Neoplastic/drug effects*; Cell Transformation, Neoplastic/pathology; Female; Gas Chromatography-Mass Spectrometry; Phytotherapy*; Mice, Inbred ICR; Plant Extracts/pharmacology*; Skin Neoplasms/chemically induced; Skin Neoplasms/pathology; Skin Neoplasms/prevention & control*; 9,10-Dimethyl-1,2-benzanthracene/toxicity; Benzoquinones/analysis; Benzoquinones/isolation & purification; Benzoquinones/chemistry*; Ardisia/chemistry*; Mice
  6. Yasin SM, Retneswari M, Moy FM, Taib KM, Isahak M, Koh D
    Asian Pac J Cancer Prev, 2013;14(4):2317-23.
    PMID: 23725134
    The role of The Transtheoretical Model (TTM) in predicting relapse is limited. We aimed to assess whether this model can be utilised to predict relapse during the action stage. The participants included 120 smokers who had abstained from smoking for at least 24 hours following two Malaysian universities' smoking cessation programme. The smokers who relapsed perceived significantly greater advantages related to smoking and increasing doubt in their ability to quit. In contrast, former smokers with greater self-liberation and determination to abstain were less likely to relapse. The findings suggest that TTM can be used to predict relapse among quitting smokers.
    MeSH terms: Adolescent; Adult; Female; Humans; Malaysia; Male; Middle Aged; Models, Theoretical*; Motivation; Prognosis; Surveys and Questionnaires; Recurrence; Smoking/adverse effects*; Smoking/psychology; Smoking Cessation/methods*; Smoking Cessation/psychology; Self Efficacy; Young Adult
  7. Rashwan H, Ishak I, Sawalludin N
    Asian Pac J Cancer Prev, 2013;14(4):2545-9.
    PMID: 23725172
    Cervical cancer is one of the most frequent cancers in women worldwide. Persistent infection with a human papillomavirus (HPV) is the main cause for cervical cancer. Vaccination and Pap smear screening are the best methods for prevention of the disease. The objective of this cross-sectional study was to assess the knowledge and views of upper secondary school female students in Kuala Lumpur, Malaysia, toward prevention of cervical cancer. This study was conducted from April 2009 to September 2009 in 8 schools in Kuala Lumpur area using pre-tested and validated questionnaires. Results indicated that the respondents had low knowledge of cervical cancer and its prevention although the majority of students (80.4%) had heard about the disease. The level of knowledge of cervical cancr and its prevention was significantly higher among students from the science stream (p<0.001) compared to students from the art stream. Most students (69.3%) agreed to take the vaccination if the service was available in schools. A high percentage of students (82.2%) agreed that the vaccination should be compulsory to the students. In conclusion, most students had low knowledge of cervical cancer and its prevention but they had positive attitude toward vaccination and agreed that vaccination should be compulsory. Therefore, suitable educational programmes should be developed to improve the knowledge of secondary school students on the prevention of cervical cancer.
    MeSH terms: Adolescent; Adult; Uterine Cervical Neoplasms/prevention & control*; Uterine Cervical Neoplasms/psychology; Uterine Cervical Neoplasms/virology; Cross-Sectional Studies; Female; Humans; Health Knowledge, Attitudes, Practice*; Malaysia; Prognosis; Surveys and Questionnaires; Schools*; Students*; Papillomaviridae/isolation & purification*; Papillomavirus Infections/prevention & control*; Papillomavirus Infections/psychology; Papillomavirus Infections/virology; Papillomavirus Vaccines/therapeutic use*; Young Adult
  8. Lee JE, Loh SY
    Asian Pac J Cancer Prev, 2013;14(4):2551-5.
    PMID: 23725173
    BACKGROUND: Physical activity is a component of lifestyle activity and one that has been increasingly seen as 'the medicine' to cure chronic diseases, including certain types of cancer. Physical activity has potent impact on mortality but only if it is well incorporated as lifestyle activity may it allow a better outcome of the quality of life of cancer survivors. This paper presents a review on the evidence of physical activity being actively promoted as lifestyle activity amongst cancer survivors, for the last five years.

    MATERIALS AND METHODS: Electronic databases were systematically searched for randomized controlled trials incorporated as lifestyle activity through MEDLINE with the associated terms "physical activity or exercise", "quality of life" and "cancer survivor or people with cancer", 'lifestyle' and 'randomised controlled trial'. The period of search was confined to publication within January 2008 till December 2012 and further limits were to full text, peer reviewed, abstract available and English language.

    RESULTS: Based on inclusion criteria, 45 articles were retrieved. Of these, 41 were excluded after examining the full paper. Four final articles on randomized controlled trials were studied to determine the effectiveness of PA to improve the quality of life in post treatment cancer survivors and positive associations were found.

    CONCLUSIONS: Physical activity is related to better quality of life of cancer survivors. Only one paper had characteristics of lifestyle incorporation for a lifestyle redesign, but none overtly or actively promoting exercise interventions as an essential lifestyle activity. With increasing survivorship, the benefits of physical activity must be aggressively and overtly promoted to optimize its positive impact.

    MeSH terms: Exercise Therapy*; Humans; Life Style*; Neoplasms/mortality*; Neoplasms/psychology; Neoplasms/therapy; Prognosis; Quality of Life*; Survival Rate; Randomized Controlled Trials as Topic; Survivors/psychology*
  9. Zainal NZ, Nik-Jaafar NR, Baharudin A, Sabki ZA, Ng CG
    Asian Pac J Cancer Prev, 2013;14(4):2649-56.
    PMID: 23725190
    BACKGROUND: Depression is common in breast cancer patients. The aim of this paper was to make a systematic review of its prevalence and associated factors oin breast cancer survivors.

    MATERIALS AND METHODS: An extensive systematic electronic review (PUBMED, CINAHL, PsyINFO and Ovid) and handsearch were carried out to retrieve published articles up to November 2012, using Depression OR Dysthymia AND (Cancer OR Tumor OR Neoplasms as the keywords. Information about the design of the studies, measuring scale, characteristics of the participants, prevalence of depression and its associated factors from the included studies were extracted and summarized.

    RESULTS: We identified 32 eligible studies that recruited 10,826 breast cancer survivors. Most were cross-sectional or prospective designed. The most frequent instrument used to screen depression was the Center for Epidemiological Studies for Depression (CES-D, n=11 studies) followed by the Beck Depression Inventory (BDI, n=6 studies) and the Hospital Anxiety and Depression Scale (HADS, n=6 studies). CES-D returned about similar prevalence of depression (median=22%, range=13-56%) with BDI (median=22%, range=17-48%) but higher than HADS (median=10%, range=1-22%). Depression was associated with several socio-demographic variables, cancer-related factors, treatment-related factors, subject psychological factors, lifestyle factors, social support and quality of life.

    CONCLUSIONS: Breast cancer survivors are at risk for depression so that detection of associated factors is important in clinical practice.

    MeSH terms: Adult; Aged; Aged, 80 and over; Breast Neoplasms/etiology; Breast Neoplasms/mortality*; Breast Neoplasms/pathology; Female; Follow-Up Studies; Humans; Lymphatic Metastasis; Male; Middle Aged; Neoplasm Staging; Obesity/complications*; Obesity/physiopathology; Prognosis; Receptors, Estrogen/metabolism; Receptors, Progesterone/metabolism; Retrospective Studies; Body Mass Index; Survival Rate; Receptor, ErbB-2/metabolism; Young Adult
  10. Chang SW, Abdul-Kareem S, Merican AF, Zain RB
    BMC Bioinformatics, 2013;14:170.
    PMID: 23725313 DOI: 10.1186/1471-2105-14-170
    Machine learning techniques are becoming useful as an alternative approach to conventional medical diagnosis or prognosis as they are good for handling noisy and incomplete data, and significant results can be attained despite a small sample size. Traditionally, clinicians make prognostic decisions based on clinicopathologic markers. However, it is not easy for the most skilful clinician to come out with an accurate prognosis by using these markers alone. Thus, there is a need to use genomic markers to improve the accuracy of prognosis. The main aim of this research is to apply a hybrid of feature selection and machine learning methods in oral cancer prognosis based on the parameters of the correlation of clinicopathologic and genomic markers.
    MeSH terms: Adult; Aged; Artificial Intelligence*; Female; Humans; Male; Middle Aged; Models, Biological; Mouth Neoplasms/diagnosis*; Mouth Neoplasms/genetics; Mouth Neoplasms/pathology; Prognosis; Biomarkers, Tumor/analysis*; Genome, Human; Logistic Models; Neural Networks (Computer); Support Vector Machine
  11. Kamaruzaman S, Hauser PC, Sanagi MM, Ibrahim WA, Endud S, See HH
    Anal Chim Acta, 2013 Jun 14;783:24-30.
    PMID: 23726096 DOI: 10.1016/j.aca.2013.04.042
    A simple adsorption/desorption procedure using a mixed matrix membrane (MMM) as extraction medium is demonstrated as a new miniaturized sample pretreatment and preconcentration technique. Reversed-phase particles namely polymeric bonded octadecyl (C18) was incorporated through dispersion in a cellulose triacetate (CTA) polymer matrix to form a C18-MMM. Non-steroidal anti-inflammatory drugs (NSAIDs) namely diclofenac, mefenamic acid and ibuprofen present in the environmental water samples were selected as targeted model analytes. The extraction setup is simple by dipping a small piece of C18-MMM (7 mm × 7 mm) in a stirred 10 mL sample solution for analyte adsorption process. The entrapped analyte within the membrane was then desorbed into 100 μL of methanol by ultrasonication prior to high performance liquid chromatography (HPLC) analysis. Each membrane was discarded after single use to avoid any analyte carry-over effect. Several important parameters, such as effect of sample pH, salting-out effect, sample volume, extraction time, desorption solvent and desorption time were comprehensively optimized. The C18-MMM demonstrated high affinity for NSAIDs spiked in tap and river water with relative recoveries ranging from 92 to 100% and good reproducibility with relative standard deviations between 1.1 and 5.5% (n=9). The overall results obtained were found comparable against conventional solid phase extraction (SPE) using cartridge packed with identical C18 adsorbent.
    MeSH terms: Adsorption; Methanol; Anti-Inflammatory Agents, Non-Steroidal; Cellulose; Chromatography, High Pressure Liquid; Diclofenac; Hydrogen-Ion Concentration; Ibuprofen; Mefenamic Acid; Polymers; Solvents; Reproducibility of Results; Rivers; Solid Phase Extraction
  12. Zulfahmi S, Yazan LS, Ithnin H, Armania N
    Exp. Toxicol. Pathol., 2013 Nov;65(7-8):1083-9.
    PMID: 23726752 DOI: 10.1016/j.etp.2013.04.004
    Cervical cancer is the most common gynecological cancer and one of the major causes of female cancer-related death worldwide particularly in developing countries. Thus far, there are a few in vivo models have been developed in investigating this type of cancer. In this study, we induced cervical cancer in Balb/c mice by exploiting the carcinogenic property of diestylstilbestrol (DES). The Balb/c pregnant mice were given subcutaneous (SC) injection of 67μg/kg body weight of DES on GD 13, and the mice gave birth approximately at gestation day 19-22. Female offspring were reared and the body weight was recorded once weekly. The female offspring were sacrificed at age of 5 months. Upon termination, blood was collected in a plain tube via cardiac puncture and the reproductive tracts were collected and weighed. The reproductive tract sections were stained using H&E for observation of pathological changes. The progression of disease state was monitored by measuring the level of serum interleukin (IL-6) using the Mouse IL-6 ELISA Assay Kit (BD OptEIA™, USA). All parameters were compared with Not-induced group. The outcome of this study demonstrated a significant difference in body weight gain, reproductive organ weight, diameter of cervix and the level of serum IL-6 in the Induced group as compared to the Not-induced group (P<0.05). Histopathological findings revealed the presence of adenosis only in the Induced group. It shows that DES could be employed as an agent to induce cervical carcinogenesis in animal model. In addition to that, new potential anti-cancer agents from various sources could be further evaluated using this technique.
    MeSH terms: Animals; Carcinogens/toxicity*; Uterine Cervical Neoplasms/chemically induced*; Uterine Cervical Neoplasms/metabolism; Uterine Cervical Neoplasms/pathology; Diethylstilbestrol/toxicity*; Disease Models, Animal*; Enzyme-Linked Immunosorbent Assay; Female; Mice, Inbred BALB C; Pregnancy; Interleukin-6/blood; Mice; Carcinogenesis
  13. Aripin YM, Ibrahim N, Muhammad R
    Asian J Surg, 2013 Oct;36(4):150-3.
    PMID: 23726827 DOI: 10.1016/j.asjsur.2013.04.008
    The anatomical orientation of structures in the axilla has not been well studied, although it is essential for a neat and safe dissection. The objective of this study was to determine the relations between neurovascular structures in the axilla as they were encountered during axillary lymph node dissection (ALND) for breast cancer.
    MeSH terms: Adult; Axilla/anatomy & histology*; Female; Humans; Lymph Node Excision/methods*; Male; Middle Aged; Pectoralis Muscles/anatomy & histology*; Prospective Studies
  14. Ramesh S, Yaghoubi A, Lee KY, Chin KM, Purbolaksono J, Hamdi M, et al.
    J Mech Behav Biomed Mater, 2013 Sep;25:63-9.
    PMID: 23726923 DOI: 10.1016/j.jmbbm.2013.05.008
    Forsterite (Mg2SiO4) because of its exceptionally high fracture toughness which is close to that of cortical bones has been nominated as a possible successor to calcium phosphate bioceramics. Recent in vitro studies also suggest that forsterite possesses good bioactivity and promotes osteoblast proliferation as well as adhesion. However studies on preparation and sinterability of nanocrystalline forsterite remain scarce. In this work, we use a solid-state reaction with magnesium oxide (MgO) and talc (Mg3Si4(OH)2) as the starting precursors to synthesize forsterite. A systematic investigation was carried out to elucidate the effect of preparatory procedures including heat treatment, mixing methods and sintering temperature on development of microstructures as well as the mechanical properties of the sintered forsterite body.
    MeSH terms: Biocompatible Materials/chemical synthesis*; Crystallization/methods; Hardness; Materials Testing; Particle Size; Surface Properties; Tensile Strength; Silicon Compounds/chemical synthesis*; Nanoparticles/ultrastructure*; Nanoparticles/chemistry*; Elastic Modulus
  15. Ludin SM, Arbon P, Parker S
    Intensive Crit Care Nurs, 2013 Aug;29(4):187-92.
    PMID: 23727138 DOI: 10.1016/j.iccn.2013.02.001
    Adequate preparation of critically ill patients throughout their transition experience within and following discharge from the Intensive Care Unit is an important element of the nursing care process during critical illness. However, little is known about nurses' perspectives of, and engagement in, caring for critically ill patients during their transition experiences.
    MeSH terms: Continuity of Patient Care*; Critical Care; Humans; Intensive Care Units; Nursing Care; Clinical Nursing Research; Critical Illness/nursing*
  16. Saleh MA, Ramli AT, Alajerami Y, Aliyu AS
    J Environ Radioact, 2013 Oct;124:130-40.
    PMID: 23727880 DOI: 10.1016/j.jenvrad.2013.04.013
    Extensive environmental survey and measurements of gamma radioactivity in the soil samples collected from Segamat District were conducted. Two gamma detectors were used for the measurements of background radiation in the area and the results were used in the computation of the mean external radiation dose rate and mean weighted dose rate, which are 276 nGy h(-1) and 1.169 mSv y(-1), respectively. A high purity germanium (HPGe) detector was used in the assessment of activity concentrations of (232)Th, (226)Ra and (40)K. The results of the gamma spectrometry range from 11 ± 1 to 1210 ± 41 Bq kg(-1) for (232)Th, 12 ± 1 to 968 ± 27 Bq kg(-1) for (226)Ra, and 12 ± 2 to 2450 ± 86 Bq kg(-1) for (40)K. Gross alpha and gross beta activity concentrations range from 170 ± 50 to 4360 ± 170 Bq kg(-1) and 70 ± 20 to 4690 ± 90 Bq kg(-1), respectively. These results were used in the plotting of digital maps (using ARCGIS 9.3) for isodose. The results are compared with values giving in UNSCEAR 2000.
    MeSH terms: Background Radiation; Humans; Malaysia; Potassium Radioisotopes/analysis*; Radiation Dosage; Radiation Monitoring; Radium/analysis*; Soil Pollutants, Radioactive/analysis*; Spectrometry, Gamma; Thorium/analysis*; Risk Assessment; Geographic Information Systems; Geographic Mapping
  17. Manaf YN, Marikkar JM, Long K, Ghazali HM
    J Oleo Sci, 2013;62(6):335-43.
    PMID: 23728324
    The seeds (6.9±0.2% by weight of fruit) of the red-skin rambutan (Nephelium lappaceum L.) contain a considerable amount of crude fat (38.0±4.36%) and thus, the aim of the study was to determine the physico-chemical properties of this fat for potential applications. The iodine and saponification values, and unsaponifiable matter and free fatty acid contents of the seed fat were 50.27 g I2/100g fat, 182.1 mg KOH/g fat, 0.8% and 2.1%, respectively. The fat is pale yellow with a Lovibond color index of 3.1Y+1.1R. The fatty acid profile indicates an almost equal proportion of saturated (49.1%) and unsaturated (50.9%) fatty acids, where oleic (42.0%) and arachidic (34.3%) acids were the most dominant fatty acids. It also contained small amounts of stearic (8.0%), palmitic (4.6%), gadoleic (5.9%), linoleic (2.2%), behenic (2.1%) palmitoleic (0.7%) myristic (0.1%) and erucic (0.1%) acids. HPLC analysis showed that the fat comprised mainly unknown triacylglycerols (TAG) with high retention times indicating they have higher carbon numbers compared with many vegetable oils. The fat has melting and cooling points of 44.2°C and -42.5°C, respectively, making it a semi-solid at room temperature. The solid content at 0°C was 53.5% and the fat melted completely at 40°C. z-Nose analysis showed that the presence of high levels of volatile compounds in red-skin rambutan seed and seed fat.
    MeSH terms: Carbon/analysis; Carbon/chemistry; Chromatography, High Pressure Liquid; Fats/analysis*; Fats/chemistry*; Fatty Acids/analysis; Fatty Acids, Volatile/analysis; Seeds/chemistry; Triglycerides/analysis; Sapindaceae/chemistry*; Transition Temperature
  18. Ng CH, Wang WS, Chong KV, Win YF, Neo KE, Lee HB, et al.
    Dalton Trans, 2013 Jul 28;42(28):10233-43.
    PMID: 23728518 DOI: 10.1039/c3dt50884f
    Chiral enantiomers [Cu(phen)(L-threo)(H2O)]NO3 1 and [Cu(phen)(D-threo)(H2O)]NO3 2 (threo = threoninate) underwent aldol-type condensation with formaldehyde, with retention of chirality, to yield their respective enantiomeric ternary copper(II) complexes, viz. L- and D-[Cu(phen)(5MeOCA)(H2O)]NO3·xH2O (3 and 4; phen = 1,10-phenanthroline; 5MeOCA = 5-methyloxazolidine-4-carboxylate; x = 0-3) respectively. These chiral complexes were characterized by FTIR, elemental analysis, circular dichroism, UV-Visible spectroscopy, fluorescence spectroscopy (FL), molar conductivity measurement, ESI-MS and X-ray crystallography. Analysis of restriction enzyme inhibition by these four complexes revealed modulation of DNA binding selectivity by the type of ligand, ligand modification and chirality. Their interaction with bovine serum albumin was investigated by FL and electronic spectroscopy. With the aid of the crystal structure of BSA, spectroscopic evidence suggested their binding at the cavity containing Trp134 with numerous Tyr residues in subdomain IA. The products were more antiproliferative than cisplatin against cancer cell lines HK-1, MCF-7, HCT116, HSC-2 and C666-1 except HL-60, and were selective towards nasopharyngeal cancer HK-1 cells over normal NP69 cells of the same organ type.
    MeSH terms: Antineoplastic Agents/pharmacology; Antineoplastic Agents/chemistry*; Cell Line; Cell Survival/drug effects; Copper/pharmacology; Copper/chemistry*; DNA/chemistry; Herpesvirus 4, Human; Humans; Serum Albumin, Bovine/chemistry; Stereoisomerism; Cell Line, Tumor; Coordination Complexes/pharmacology; Coordination Complexes/chemistry*
  19. Kumar A, Sathian B
    Asian Pac J Trop Biomed, 2013 Jun;3(6):487-91.
    PMID: 23730563 DOI: 10.1016/S2221-1691(13)60101-X
    To study the usefulness of traditional lipid profile levels in screening subjects who had developed chest pain due to cardiac event as indicated by a positive troponin I test.
    MeSH terms: Adult; Aged; Chest Pain/etiology; Chest Pain/epidemiology*; Emergency Service, Hospital; Female; Humans; Lipids/blood*; Male; Middle Aged; Nepal/epidemiology; Retrospective Studies; Troponin I/blood*
  20. Thompson PJ, Salvi S, Lin J, Cho YJ, Eng P, Abdul Manap R, et al.
    Respirology, 2013 Aug;18(6):957-67.
    PMID: 23730953 DOI: 10.1111/resp.12137
    BACKGROUND AND OBJECTIVE: The Asthma Insight and Management (AIM) survey was conducted in North America, Europe, the Asia-Pacific region and Latin America to characterize patients' insights, attitudes and perceptions about their asthma and its treatment. We report findings from the Asia-Pacific survey.
    METHODS: Asthma patients (≥12 years) from Australia, China, Hong Kong, India, Malaysia, Singapore, South Korea, Taiwan and Thailand were surveyed. Patients answered 53 questions exploring general health, diagnosis/history, symptoms, exacerbations, patient burden, disease management, medications/treatments and patient's attitudes. The Global Initiative for Asthma guidelines were used to assess asthma control. The survey was conducted by random digit telephone dialling (Australia, China and Hong Kong) or by random face-to-face interviews (India, Malaysia, Singapore, South Korea, Taiwan and Thailand).
    RESULTS: There were 80 761 households screened. Data from 3630 patients were collected. Wide disparity existed between objective measures of control and patient perception. Reported exacerbations during the previous year ranged from 19% (Hong Kong) to 67% (India). Reported unscheduled urgent/emergency visits to a doctor's office/hospital/clinic in the previous year ranged from 15% (Hong Kong) to 46% (Taiwan). Patients who reported having controlled asthma in the previous month ranged from 27% (South Korea) to 84% (Taiwan). Substantial functional and emotional limitations due to asthma were identified by 13% (South Korea) to 78% (India) of patients.
    CONCLUSIONS: Asthma has a profound impact on patients' well-being despite the availability of effective treatments and evidence-based management guidelines. Substantial differences across the surveyed countries exist, suggesting unmet, country-specific cultural and educational needs. A large proportion of asthma patients overestimate their level of control.
    Study site: random digit telephone dialling or by random face-to-face interviews at pre-selected locations.
    MeSH terms: Adolescent; Adult; Aged; Asia/epidemiology; Asthma/ethnology*; Asthma/epidemiology*; Asthma/therapy; Attitude to Health/ethnology*; Child; Culture; Female; Health Surveys; Hong Kong/epidemiology; Humans; Health Knowledge, Attitudes, Practice/ethnology*; Male; Middle Aged; Pacific Islands/epidemiology; Patient Education as Topic; Perception*; Quality of Life; Surveys and Questionnaires; Treatment Outcome; Disease Management*
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