Browse publications by year: 2018

  1. Tan TH, Boey CY, Lee BN
    Nucl Med Mol Imaging, 2018 Apr;52(2):119-124.
    PMID: 29662560 DOI: 10.1007/s13139-017-0496-3
    Purpose: The National Cancer Institute is the only referral centre in Malaysia that provides 68Ga-DOTA-peptide imaging. The purpose of this study is to determine the impact of 68Ga-DOTA-peptide PET/CT on the management of gastrointestinal neuroendocrine tumours (GI-NET).

    Materials and Methods: A cross-sectional study was performed to review the impact of 68Ga-DOTA-peptide (68Ga-DOTATATE or 68Ga-DOTATOC) PET/CT on patients with biopsy-proven GI-NET between January 2011 and December 2015. Suspected NET was excluded. Demographic data, tumoral characteristics, change of disease stage, pre-PET intended management and post-PET management were evaluated.

    Results: Over a 5-year period, 82 studies of 68Ga-DOTA-peptide PET/CT were performed on 44 GI-NET patients. The most common primary site was the rectum (50.0%) followed by the small bowel, stomach and colon. Using WHO 2010 grading, 40.9% of patients had low-grade (G1) tumour, 22.7% intermediate (G2) and 4.5% high (G3). Of ten patients scheduled for pre-operative staging, 68Ga-DOTA-peptide PET/CT only led to therapeutic change in three patients. Furthermore, false-negative results of 68Ga-DOTA-peptide PET/CT were reported in one patient after surgical confirmation. However, therapeutic changes were seen in 20/36 patients (55.6%) scheduled for post-surgical restaging or assessment of somatostatin analogue (SSA) eligibility. When 68Ga-DOTA-peptide PET/CT was used for monitoring disease progress during systemic treatment (sandostatin, chemotherapy, everolimus and PRRT) in metastatic disease, impact on management modification was seen in 19/36 patients (52.8%), of which 84.2% had inter-modality change (switch to everolimus, chemotherapy or PRRT) and 15.8% had intra-modality change (increased SSA dosage).

    Conclusions: 68Ga-DOTA-peptide PET/CT has a significant impact on management decisions in GI-NET patients as it can provide additional information on occult metastasis/equivocal lesions and supply the clinician an opportunity to select patients for targeted therapy.

    MeSH terms: Everolimus; Biopsy; Colon; Cross-Sectional Studies; Demography; Humans; Malaysia; Organometallic Compounds; Rectum; Referral and Consultation; Somatostatin; Stomach; United States; World Health Organization; Octreotide; Neuroendocrine Tumors; National Cancer Institute (U.S.); Positron Emission Tomography Computed Tomography
  2. Saad N, Alberio R, Johnson AD, Emes RD, Giles TC, Clarke P, et al.
    Oncotarget, 2018 Mar 23;9(22):16008-16027.
    PMID: 29662623 DOI: 10.18632/oncotarget.24664
    Inducing stable control of tumour growth by tumour reversion is an alternative approach to cancer treatment when eradication of the disease cannot be achieved. The process requires re-establishment of normal control mechanisms that are lost in cancer cells so that abnormal proliferation can be halted. Embryonic environments can reset cellular programmes and we previously showed that axolotl oocyte extracts can reprogram breast cancer cells and reverse their tumorigenicity. In this study, we analysed the gene expression profiles of oocyte extract-treated tumour xenografts to show that tumour reprogramming involves cell cycle arrest and acquisition of a quiescent state. Tumour dormancy is associated with increased P27 expression, restoration of RB function and downregulation of mitogen-activated signalling pathways. We also show that the quiescent state is associated with increased levels of H4K20me3 and decreased H4K20me1, an epigenetic profile leading to chromatin compaction. The epigenetic reprogramming induced by oocyte extracts is required for RB hypophosphorylation and induction of P27 expression, both occurring during exposure to the extracts and stably maintained in reprogrammed tumour xenografts. Therefore, this study demonstrates the value of oocyte molecules for inducing tumour reversion and for the development of new chemoquiescence-based therapies.
    MeSH terms: Ambystoma mexicanum; Animals; Chromatin; Mitogens; Neoplasms; Oocytes; Plant Extracts; Signal Transduction; Down-Regulation; Epigenesis, Genetic; Cell Proliferation; Epigenomics; Cell Cycle Checkpoints; Transcriptome; Heterografts
  3. Cheung TT, Han HS, She WH, Chen KH, Chow PKH, Yoong BK, et al.
    Liver Cancer, 2018 Mar;7(1):28-39.
    PMID: 29662831 DOI: 10.1159/000481834
    Background: Laparoscopic liver resection has been gaining momentum, and it has become an accepted practice after the two international consensus conferences where experts worked up guidelines to standardize this approach and improve its safety. However, most laparoscopic hepatectomies were performed in patients with liver metastases. The concurrent presence of liver cirrhosis with hepatocellular carcinoma (HCC) poses a great challenge to clinicians trying to establish a routine use of laparoscopic liver resection for HCC.

    Summary: The first Asia Pacific consensus meeting on laparoscopic liver resection for HCC was held in July 2016 in Hong Kong. A group of expert liver surgeons with experience in both open and laparoscopic hepatectomy for HCC convened to formulate recommendations on the role and perspective of laparoscopic liver resection for primary liver cancer. The recommendations consolidate the most recent evidence pertaining to laparoscopic hepatectomy together with the latest thinking of practicing clinicians involved in laparoscopic hepatectomy, and give detailed guidance on how to deploy the treatment effectively for patients in need.

    Key Message: The panel of experts gathered evidence and produced recommendations providing guidance on the safe practice of laparoscopic hepatectomy for patients with HCC and cirrhosis. The inherent advantage of the laparoscopic approach may result in less blood loss if the procedure is performed in experienced centers. The laparoscopic approach to minor hepatectomy, particularly left lateral sectionectomy, is a preferred practice for HCC at experienced centers. Laparoscopic major liver resection for HCC remains a technically challenging operation, and it should be carried out in centers of excellence. There is emerging evidence that laparoscopic liver resection produces a better oncological outcome for HCC when compared with radiofrequency ablation, particularly when the lesions are peripherally located. Augmented features in laparoscopic liver resection, including indocyanine green fluorescence, 3D laparoscopy, and robot, will become important tools of surgical treatment in the near future. A combination of all of these features will enhance the experience of the surgeons, which may translate into better surgical outcomes. This is the first consensus workforce on laparoscopic liver resection for HCC, which is a unique condition that occurs in the Asia Pacific region.

    MeSH terms: Fluorescence; Hepatectomy; Carcinoma, Hepatocellular; Hong Kong; Humans; Indocyanine Green; Liver Cirrhosis; Liver Neoplasms; Laparoscopy; Robotics; Treatment Outcome; Surgeons
  4. Nizamuddin S, Siddiqui MTH, Baloch HA, Mubarak NM, Griffin G, Madapusi S, et al.
    Environ Sci Pollut Res Int, 2018 Jun;25(18):17529-17539.
    PMID: 29663294 DOI: 10.1007/s11356-018-1876-7
    The process parameters of microwave hydrothermal carbonization (MHTC) have significant effect on yield of hydrochar. This study discusses the effect of process parameters on hydrochar yield produced from MHTC of rice husk. Results revealed that, over the ranges tested, a lower temperature, lower reaction time, lower biomass to water ratio, and higher particle size produce more hydrochar. Maximum hydrochar yield of 62.8% was obtained at 1000 W, 220 °C, and 5 min. The higher heating value (HHV) was improved significantly from 6.80 MJ/kg of rice husk to 16.10 MJ/kg of hydrochar. Elemental analysis results showed that the carbon content increased and oxygen content decreased in hydrochar from 25.9 to 47.2% and 68.5 to 47.0%, respectively, improving the energy and combustion properties. SEM analysis exhibited modification in structure of rice husk and improvement in porosity after MHTC, which was further confirmed from BET surface analysis. The BET surface area increased from 25.0656 m2/g (rice husk) to 92.6832 m2/g (hydrochar). Thermal stability of hydrochar was improved from 340 °C for rice husk to 370 °C for hydrochar.
    MeSH terms: Carbon/chemistry*; Microwaves; Oryza/chemistry*; Temperature; Water; Biomass
  5. Rupani PF, Embrandiri A, Ibrahim MH, Ghole V, Lee CT, Abbaspour M
    Environ Sci Pollut Res Int, 2018 Dec;25(36):35805-35810.
    PMID: 29663297 DOI: 10.1007/s11356-018-1875-8
    Several treatment technologies are available for the treatment of palm oil mill wastes. Vermicomposting is widely recognized as efficient, eco-friendly methods for converting organic waste materials to valuable products. This study evaluates the effect of different vermicompost extracts obtained from palm oil mill effluent (POME) and palm-pressed fiber (PPF) mixtures on the germination, growth, relative toxicity, and photosynthetic pigments of mung beans (Vigna radiata) plant. POME contains valuable nutrients and can be used as a liquid fertilizer for fertigation. Mung bean seeds were sown in petri dishes irrigated with different dilutions of vermicomposted POME-PPF extracts, namely 50, 60, and 70% at varying dilutions. Results showed that at lower dilutions, the vermicompost extracts showed favorable effects on seed germination, seedling growth, and total chlorophyll content in mung bean seedlings, but at higher dilutions, they showed inhibitory effects. The carotenoid contents also decreased with increased dilutions of POME-PPF. This study recommends that the extracts could serve as a good source of fertilizer for the germination and growth enhancement of mung bean seedlings at the recommended dilutions.
    MeSH terms: Carotenoids; Chlorophyll; Fertilizers; Fabaceae; Photosynthesis; Seeds; Germination; Seedlings; Vigna
  6. Paramasivam SS, Chinna K, Singh AKK, Ratnasingam J, Ibrahim L, Lim LL, et al.
    Diabet Med, 2018 08;35(8):1118-1129.
    PMID: 29663517 DOI: 10.1111/dme.13649
    AIMS: To determine if therapeutic, retrospective continuous glucose monitoring (CGM) improves HbA1c with less hypoglycaemia in women with insulin-treated gestational diabetes mellitus (GDM).

    METHODS: This prospective, randomized controlled, open-label trial evaluated 50 women with insulin-treated GDM randomized to either retrospective CGM (6-day sensor) at 28, 32 and 36 weeks' gestation (Group 1, CGM, n = 25) or usual antenatal care without CGM (Group 2, control, n = 25). All women performed seven-point capillary blood glucose (CBG) profiles at least 3 days per week and recorded hypoglycaemic events (symptomatic and asymptomatic CBG

    MeSH terms: Adult; Blood Glucose/analysis*; Blood Glucose/drug effects; Blood Glucose/metabolism; Female; Hemoglobin A, Glycosylated/analysis; Hemoglobin A, Glycosylated/drug effects; Hemoglobin A, Glycosylated/metabolism*; Humans; Insulin/therapeutic use*; Malaysia; Pregnancy; Prenatal Care/methods; Blood Glucose Self-Monitoring/instrumentation; Blood Glucose Self-Monitoring/methods; Diabetes, Gestational/blood*; Diabetes, Gestational/drug therapy*; Standard of Care
  7. Thomson PJ, Goodson ML, Smith DR
    J Oral Pathol Med, 2018 Jul;47(6):557-565.
    PMID: 29663518 DOI: 10.1111/jop.12716
    BACKGROUND: Clinically identifiable potentially malignant disorders (PMD) precede oral squamous cell carcinoma development. Oral lichenoid lesions (OLL) and proliferative verrucous leukoplakia (PVL) are specific precursor lesions believed to exhibit both treatment resistance and a high risk of malignant transformation (MT).

    METHODS: A retrospective review of 590 PMD patients treated in Northern England by CO2 laser surgery between 1996 and 2014 was carried out. Lesions exhibiting lichenoid or proliferative verrucous features were identified from the patient database and their clinicopathological features and outcome post-treatment determined at the study census date of 31 December 2014.

    RESULTS: One hundred and 98 patients were identified as follows: 118 OLL and 80 PVL, most frequently leukoplakia at ventrolateral tongue and floor of mouth sites, equally distributed between males and females. Most exhibited dysplasia on incision biopsy (72% OLL; 85% PVL) and were treated by laser excision rather than ablation (88.1% OLL; 86.25% PVL). OLL were more common in younger patients (OLL 57.1 year; PVL 62.25 years; P = .008) and more likely than PVL to present as erythroleukoplakia (OLL 15.3%; PVL 2.5%; P = .003). Whilst no significant difference was seen between OLL and PVL achieving disease-free status (69.5% and 65%, respectively; P = .55), this was less than the overall PMD cohort (74.2%). MT was identified in 2 OLL (1.7%) and 2 PVL (2.5%) during follow-up.

    CONCLUSION: One-third of PMD cases showed features of OLL or PVL, probably representing a disease presentation continuum. Post-treatment disease-free status was less common in OLL and PVL, although MT was infrequent.

    MeSH terms: Biopsy; Carbon Dioxide; Carcinoma, Squamous Cell; England; Female; Follow-Up Studies; Humans; Leukoplakia, Oral; Male; Mouth Floor; Retrospective Studies; Censuses; Laser Therapy
  8. Tee JYH, Gan WY, Tan KA, Chin YS
    PLoS One, 2018;13(4):e0195934.
    PMID: 29664932 DOI: 10.1371/journal.pone.0195934
    The understanding on the roles of obesity and lifestyle behaviors in predicting executive function of adolescents has been limited. Low executive function proficiency may have adverse effects on adolescents' school academic performance. This cross-sectional study aimed to examine the relationship between BMI-for-age and multiple lifestyle behaviors (operationalized as meal consumption, physical activity, and sleep quality) with executive function (operationalized as inhibition, working memory, and cognitive flexibility) on a sample of Malaysian adolescents aged between 12 and 16 years (N = 513). Participants were recruited from two randomly selected schools in the state of Selangor in Malaysia. Using a self-administered questionnaire, parent participants provided information concerning their sociodemographic data, whereas adolescent participants provided information regarding their meal consumptions, physical activity, and sleep quality. The modified Harvard step test was used to assess adolescents' aerobic fitness, while Stroop color-word, digit span, and trail-making tests were used to assess adolescents' inhibition, working memory, and cognitive flexibility, respectively. Three separate hierarchical regression analyses were conducted for each outcome namely, inhibition, working memory, and cognitive flexibility. After adjusted for sociodemographic factors and BMI-for-age, differential predictors of inhibition and working memory were found. Habitual sleep efficiency significantly and positively predicted inhibition. Regular dinner intakes, physical activity levels, and sleep quality significantly and positively predicted working memory. Household income emerged as a consistent predictor for all executive function domains. In conclusion, an increased trend of obesity and unhealthy lifestyles among adolescents were found to be associated with poorer executive function. Regular dinner intakes, higher physical activity levels and better sleep quality predicted better executive function despite the inverse relationship between obesity and executive function. Future studies may explore how lifestyle modifications can optimize the development of executive function in adolescents as well as relieve the burden of obesity.
    MeSH terms: Adolescent; Cognition; Cross-Sectional Studies; Female; Humans; Life Style*; Malaysia/epidemiology; Male; Memory, Short-Term; Obesity/epidemiology*; Surveys and Questionnaires; Socioeconomic Factors; Exercise; Executive Function*; Public Health Surveillance*
  9. Tan KH, Lim FS, Toh AZY, Zheng XX, Dee CF, Majlis BY, et al.
    Small, 2018 May;14(20):e1704053.
    PMID: 29665226 DOI: 10.1002/smll.201704053
    Observation of visible light trapping in zinc oxide (ZnO) nanorods (NRs) correlated to the optical and photoelectrochemical properties is reported. In this study, ZnO NR diameter and c-axis length respond primarily at two different regions, UV and visible light, respectively. ZnO NR diameter exhibits UV absorption where large ZnO NR diameter area increases light absorption ability leading to high efficient electron-hole pair separation. On the other hand, ZnO NR c-axis length has a dominant effect in visible light resulting from a multiphoton absorption mechanism due to light reflection and trapping behavior in the free space between adjacent ZnO NRs. Furthermore, oxygen vacancies and defects in ZnO NRs are associated with the broad visible emission band of different energy levels also highlighting the possibility of the multiphoton absorption mechanism. It is demonstrated that the minimum average of ZnO NR c-axis length must satisfy the linear regression model of Z p,min = 6.31d to initiate the multiphoton absorption mechanism under visible light. This work indicates the broadening of absorption spectrum from UV to visible light region by incorporating a controllable diameter and c-axis length on vertically aligned ZnO NRs, which is important in optimizing the design and functionality of electronic devices based on light absorption mechanism.
    MeSH terms: Electrons; Light; Oxygen; Personal Satisfaction; Zinc Oxide; Linear Models; Nanotubes; Physical Phenomena
  10. Loy ACM, Gan DKW, Yusup S, Chin BLF, Lam MK, Shahbaz M, et al.
    Bioresour Technol, 2018 Aug;261:213-222.
    PMID: 29665455 DOI: 10.1016/j.biortech.2018.04.020
    The thermal degradation behaviour and kinetic parameter of non-catalytic and catalytic pyrolysis of rice husk (RH) using rice hull ash (RHA) as catalyst were investigated using thermogravimetric analysis at four different heating rates of 10, 20, 50 and 100 K/min. Four different iso conversional kinetic models such as Kissinger, Friedman, Kissinger-Akahira-Sunose (KAS) and Ozawa-Flynn-Wall (OFW) were applied in this study to calculate the activation energy (EA) and pre-exponential value (A) of the system. The EA of non-catalytic and catalytic pyrolysis was found to be in the range of 152-190 kJ/mol and 146-153 kJ/mol, respectively. The results showed that the catalytic pyrolysis of RH had resulted in a lower EA as compared to non-catalytic pyrolysis of RH and other biomass in literature. Furthermore, the high Gibb's free energy obtained in RH implied that it has the potential to serve as a source of bioenergy production.
    MeSH terms: Heating; Kinetics; Oryza*; Thermogravimetry*; Biomass; Biofuels*
  11. Syafiuddin A, Salmiati S, Jonbi J, Fulazzaky MA
    J Environ Manage, 2018 Jul 15;218:59-70.
    PMID: 29665487 DOI: 10.1016/j.jenvman.2018.03.066
    It is the first time to do investigation the reliability and validity of thirty kinetic and isotherm models for describing the behaviors of adsorption of silver nanoparticles (AgNPs) onto different adsorbents. The purpose of this study is therefore to assess the most reliable models for the adsorption of AgNPs onto feasibility of an adsorbent. The fifteen kinetic models and fifteen isotherm models were used to test secondary data of AgNPs adsorption collected from the various data sources. The rankings of arithmetic mean were estimated based on the six statistical analysis methods of using a dedicated software of the MATLAB Optimization Toolbox with a least square curve fitting function. The use of fractal-like mixed 1, 2-order model for describing the adsorption kinetics and that of Fritz-Schlunder and Baudu models for describing the adsorption isotherms can be recommended as the most reliable models for AgNPs adsorption onto the natural and synthetic adsorbent materials. The application of thirty models have been identified for the adsorption of AgNPs to clarify the usefulness of both groups of the kinetic and isotherm equations in the rank order of the levels of accuracy, and this significantly contributes to understandability and usability of the proper models and makes to knowledge beyond the existing literatures.
    MeSH terms: Adsorption; Kinetics; Silver*; Reproducibility of Results; Metal Nanoparticles*
  12. Mariapun J, Ng CW, Hairi NN
    J Epidemiol, 2018 06 05;28(6):279-286.
    PMID: 29657257 DOI: 10.2188/jea.JE20170001
    BACKGROUND: Economic development is known to shift the distribution of obesity from the socioeconomically more advantaged to the less advantaged. We assessed the socioeconomic trends in overweight, obesity, and abdominal obesity across a period of significant economic growth.
    METHODS: We used the Malaysian National Health and Morbidity Survey data sets for the years 1996, 2006, and 2011 to analyze the trends among adults aged 30 years and above. The World Health Organization's Asian body mass index cut-off points of ≥23.0 kg/m2 and ≥27.5 kg/m2 were used to define overweight and obesity, respectively. Abdominal obesity was defined as having a waist circumference of ≥90 cm for men and ≥80 cm for women. Household per-capita income was used as a measure of socioeconomic position. As a summary measure of inequality, we computed the concentration index.
    RESULTS: Women in Peninsular Malaysia demonstrated patterns that were similar to that of developed countries in which the distributions for overweight, obesity, and abdominal obesity became concentrated among the poor. For women in East Malaysia, distributions became neither concentrated among the rich nor poor, while distributions for men were still concentrated among the rich. Chinese women, particularly from the richest quintile, had the lowest rates and lowest increase in overweight and obesity. All distributions of Chinese women were concentrated among the poor. The distributions of Malay men were still concentrated among the rich, while distributions for Chinese and Indian men and Malay and Indian women were neither concentrated among the rich nor poor.
    CONCLUSION: As the country continues to progress, increasing risks of overweight and obesity among the socioeconomically less advantaged is expected.
    Study name: National Health and Morbidity Survey (NHMS-1996, NHMS-2006, NHMS-2011)
    MeSH terms: Adult; Developing Countries; Ethnic Groups/statistics & numerical data; Female; Health Surveys; Humans; Malaysia; Malaysia/epidemiology; Male; Morbidity; Obesity/epidemiology*; Poverty*; Cultural Diversity; Overweight/epidemiology*; Health Status Disparities*; Obesity, Abdominal/epidemiology*
  13. Jesse FFA, Bitrus AA, Abba Y, Raju VN, Hambali IU, Peter ID, et al.
    Vet World, 2018 Feb;11(2):172-176.
    PMID: 29657399 DOI: 10.14202/vetworld.2018.172-176
    Background and Aim: Caprine arthritis encephalitis (CAE) is an important viral disease of small ruminants particularly in dairy goats with severe social and economic implication. Hence, this study was designed to determine the seroprevalence of CAE virus (CAEV) among goat population in selected small ruminant farms in Selangor and the risk factors associated with the occurrence of the disease.

    Materials and Methods: Blood samples were collected from a total of 91 goats selected at random. Blood serum was harvested and used for competitive enzyme-linked immunosorbent assay test to detect antibodies against CAE virus.

    Results: The result obtained showed that 8/91 (8.8%) of the goats were seropositive for CAEV. In addition, biosecurity management, source of origin and sex of the animal were observed to be important risk factors associated with the occurrence of CAE in goats.

    Conclusion: The findings of this study affirmed that the seroprevalence of CAEV infection among goat population in small ruminant farms in Selangor, Malaysia, is low. However, there is need to institute strict control measures such as testing and culling positive animals or separation of infected animals from those that tested negative to the disease for effective eradication of the disease.

    MeSH terms: Animals; Antibodies; Arthritis; Encephalitis; Enzyme-Linked Immunosorbent Assay; Goats; Malaysia; Risk Factors; Ruminants; Seroepidemiologic Studies; Arthritis-Encephalitis Virus, Caprine; Lentivirus Infections; Serum; Farms
  14. Tahir D, Shariff M, Syukri F, Yusoff FM
    Vet World, 2018 Mar;11(3):327-331.
    PMID: 29657425 DOI: 10.14202/vetworld.2018.327-331
    Background and Aim: Brown-marbled grouper Epinephelus fuscoguttatus is a premium marine food fish with high demand in Asia. In fish, stress due to environmental changes such as fluctuations in the salinity can result in increased cortisol level. Stress in fish increases susceptibility to diseases ultimately resulting in death. Therefore, the aim of this study was to investigate the salinity tolerance of E. fuscoguttatus and their survival in lower salinities.

    Materials and Methods: In this study, grouper juveniles (92.43±standard error of the mean 0.51 mm) maintained in 31 ppt seawater were transferred into five tanks with seawater diluted to 25, 20, 15, 10, and 5 ppt. The salinity of the control group was not changed and was maintained at 31 ppt. Serum cortisol was measured using ELISA at 0, 30, 60, and 120 min after the fish were transferred to the different concentrations of salinity.

    Results: The survival percentage was recorded for 14 days following the transfer and the results revealed that serum cortisol of fish in a high change in salinity (15, 10, and 5 ppt) was significantly higher than the control group immediately after exposure. At the high salinity change, the cortisol levels gradually decrease at 30 min and 60 min, until no difference in cortisol concentration was observed at 120 min. No mortality was observed in fish exposed to low salinity change (25 and 20 ppt) while in higher salinity change (5 ppt), the survival percentage was 50%.

    Conclusion: The study revealed that the serum cortisol concentration was high initially and continues to decrease to resting cortisol level at 120 min indicating that cortisol hormone is released following acute stress as a primary response in grouper juveniles.

    MeSH terms: Animals; Asia; Bass; Enzyme-Linked Immunosorbent Assay; Hydrocortisone; Seawater; Seafood; Motor Vehicles; Control Groups; Salinity
  15. George R, Tan WJ, Shih Yi AL, Donald PM
    J Forensic Dent Sci, 2018 4 17;9(3):165-174.
    PMID: 29657495 DOI: 10.4103/jfo.jfds_25_16
    Context: Type of dentition and age related changes may affect the behavior of dental hard tissues under thermal stress.

    Aim: This study was conducted to analyze the effects of varying temperatures on extracted teeth of different age groups in a simulated laboratory set up.

    Settings and Design: Experimental pilot study.

    Methods and Material: Extracted teeth from three age groups (deciduous, young permanent and adult permanent) were collected and were exposed to three different temperatures (400°C, 700°C and 1000°C) in a laboratory set up. Post-test changes were analyzed visually and radiographically.

    Results: (1) The colour changes of the teeth may serve as an indicator for the temperature to which they were exposed. (2) Deciduous teeth tolerated thermal stress with lesser morphological changes compared to young and adult permanent teeth. (3) Coronal dentin of elderly permanent teeth appeared to be more resistant to thermal stress compared to that of young permanent teeth. (4) The root portion of the teeth showed better tolerance to temperature while crown was fragmented easily under thermal stress.

    Conclusion: The age factor and type of the dentition may influence the heat induced changes in teeth. These variables should be taken into consideration while applying comparative dental identification methods where dental hard tissues are exposed to extreme temperatures.

  16. Mohammad NB, Rahman NAA, Haque M
    J Pharm Bioallied Sci, 2018 4 17;10(1):7-14.
    PMID: 29657502 DOI: 10.4103/jpbs.JPBS_227_17
    Background: Cardiovascular disease (CVD) is a leading cause of death around the world including Malaysia. Ischemic heart disease (IHD) is the single largest cause of death in the developed countries and is one of the main contributors to the disease burden in developing countries.
    Materials and Methods: This was a cross-sectional study conducted to determine knowledge, attitude, and practice (KAP) regarding the risk of CVD in patients attending an outpatient clinic in Kuantan, Malaysia. A total of 100 patients comprising 52 male and 48 female subjects were selected through convenient sampling method.
    Results: Of the total subjects, 86% were Malays. The mean scores (standard deviation) for KAP were 60.75±4.823, 54.36±8.711, and 33.43±4.046, respectively, whereas the maximum scores obtained by the subjects for KAP were 71, 65, and 43, respectively. Regarding questions related to knowledge, 88% subjects knew irregular eating pattern can cause disease and the benefits of vegetable intake. Most subjects recognized that smoking and obesity were CVD risk factors. Regarding questions related to attitude, 96% agreed that exercise can prevent CVD. More than half of the subjects followed healthy lifestyle. There were statistically significant differences observed in knowledge level between sexes (P = 0.046) and races (P = 0.001). Nevertheless, there was no statistically significant difference observed in KAP across different education levels of the subjects regarding the risk of CVD (P-value = 0.332, 0.185, and 0.160, respectively).
    Conclusion: This study revealed that patients had good knowledge and attitude regarding CVD risk factors. Yet, the number of smokers is still quite high. Development of better public information system is essential for the well-being of the society.
    MeSH terms: Adult; Ambulatory Care Facilities; Cardiovascular Diseases; Cross-Sectional Studies; Humans; Health Knowledge, Attitudes, Practice*; Malaysia
  17. Al-Ahmad BEM, Kashmoola MA, Mustafa NS, Hassan H, Arzmi MH
    Eur J Dent, 2018 4 17;12(1):120-122.
    PMID: 29657536 DOI: 10.4103/ejd.ejd_322_17
    Objective: This study aimed to investigate the relationship between tooth loss and the level of blood pressure with the hypothesis that tooth loss is associated with the increase of hypertension in postmenopausal women.

    Materials and Methods: Sixty postmenopausal female patients aged 51-68 years were included in the study to assess the relationship between tooth loss and the level of blood pressure. The information including sociodemographics, last menstruation period, hypertension history, and the duration of having tooth loss was recorded. Blood pressure was measured using sphygmomanometer and the number of tooth loss was determined.

    Results: The results showed a more significant tooth loss in hypertension (median: 23 + 4; interquartile range [IQR]: 6) compared to the normotension postmenopausal women (median: 18 + 6; IQR: 12; P < 0.05). Furthermore, obese patients had more tooth loss (median: 23 + 5; IQR: 8) than the overweight patients (median: 19 + 8; IQR: 8).

    Conclusion: Tooth loss is associated with the increase of hypertension in postmenopausal women which may have a role in the development of vascular diseases.

    MeSH terms: Blood Pressure; Blood Pressure Determination; Female; Humans; Hypertension; Menstruation; Obesity; Tooth Loss; Postmenopause; Sphygmomanometers; Overweight
  18. Nik Shafii NAH, Yaacob LH, Ishak A, Kadir AA
    Oman Med J, 2018 Mar;33(2):148-153.
    PMID: 29657684 DOI: 10.5001/omj.2018.27
    Objectives: We sought to determine the prevalence of traditional and complementary medicine (TCM) use for knee osteoarthritis and its associated factors among patients attending a referral hospital in an eastern coastal state of Malaysia.
    Methods: This cross-sectional study included 214 patients with knee osteoarthritis. A universal sampling method was applied to patients who attended the outpatient clinic in Hospital Universiti Sains Malaysia from May 2013 to October 2013. Participants were given a questionnaire to determine their sociodemographic information and a validated Bahasa Malaysia version of the Western Ontario and McMaster Universities Arthritis Index (WOMAC). This questionnaire was used to assess the severity of knee osteoarthritis (i.e., pain, stiffness, and disturbances in daily activity).
    Results: Over half (57.9%) of patients reported using TCM to treat knee osteoarthritis. Factors associated with TCM use were gender (odd ratio (OR) = 2.47; 95% confidence interval (CI): 1.28-4.77), duration of knee osteoarthritis (OR = 1.51; 95% CI: 1.03-2.23), and the severity of knee pain (OR = 2.56; 95% CI: 1.71-3.86).
    Conclusions: The prevalence of TCM use among eastern Malaysian patients with knee osteoarthritis was high. Physicians caring for these patients should be aware of these findings so that inquiries regarding TCM use can be made and patients can be appropriately counseled.
    Study site: Primary care clinic, Hospital Universiti Sains Malaysia, Kelantan, Malaysia
    MeSH terms: Adult; Complementary Therapies*; Ambulatory Care Facilities; Cross-Sectional Studies; Hospitals, University; Humans; Malaysia; Outpatient Clinics, Hospital; Osteoarthritis, Knee*
  19. Ong HY, Goh LC, Santhi K, Sha'ariyah MM
    Oman Med J, 2018 Mar;33(2):167-170.
    PMID: 29657688 DOI: 10.5001/omj.2018.31
    Langerhans cell histiocytosis (LCH) is a rare proliferative disorder, which commonly arises in the bone and may involve other systems. To date, the diagnosis of temporal bone LCH remains a challenge as it may masquerade as a common ear infection. We report a case of a child who presented to us with persistent bilateral ear discharge for four months and was not responding to treatment. Her condition subsequently worsened, with clinical features and radiological findings suggestive of mastoid cellulitis. Nevertheless, further histopathology study revealed LCH.
    MeSH terms: Cellulitis; Child; Ear Diseases; Female; Histiocytosis, Langerhans-Cell; Humans; Mastoid; Otitis; Temporal Bone
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