Browse publications by year: 2018

  1. Lim R, Liong ML, Leong WS, Khan NAK, Yuen KH
    Int Urogynecol J, 2018 04;29(4):547-554.
    PMID: 28791447 DOI: 10.1007/s00192-017-3439-8
    INTRODUCTION AND HYPOTHESIS: We evaluated the effects of pulsed magnetic stimulation (PMS) on overall and different aspects of quality of life (QoL) in female patients with stress urinary incontinence (SUI).

    METHODS: This study involved 120 female SUI subjects aged ≥21 years old randomized to either active or sham PMS. Treatment involved two PMS sessions per week for 2 months (16 sessions). After 2 months, subjects could opt for 16 additional sessions regardless of initial randomization. The primary response criterion was a 7-point reduction in the total score of the International Consultation on Incontinence Questionnaire-Lower Urinary Tract Symptoms Quality of Life (ICIQ-LUTSqol) questionnaire. Follow-ups were conducted at months 1, 2, 5, 8, and 14.

    RESULTS: At 2 months, 35 out of 60 (58%) subjects in the active arm and 21 out of 60 (21%) in the sham arm were treatment responders (≥7-point reduction) (p = 0.006). There was a significant difference in changes in the mean ± SE ICIQ-LUTSqol total score between the active and sham arms (Mdiff = -8.74 ± 1.25 vs -4.10 ± 1.08, p = 0.006). At 1-year post-treatment, regardless of number of PMS sessions (16 or 32 sessions), subjects who received active PMS (63 out of 94, 67%) were more likely to be treatment responders compared with subjects who did not receive any active PMS (3 out of 12, 25%; p 

    MeSH terms: Adult; Female; Humans; Middle Aged; Quality of Life; Urinary Incontinence, Stress/psychology; Urinary Incontinence, Stress/therapy*; Magnetic Field Therapy*
  2. Griffiths HM, Ashton LA, Walker AE, Hasan F, Evans TA, Eggleton P, et al.
    J Anim Ecol, 2018 Jan;87(1):293-300.
    PMID: 28791685 DOI: 10.1111/1365-2656.12728
    Ants are diverse and abundant, especially in tropical ecosystems. They are often cited as the agents of key ecological processes, but their precise contributions compared with other organisms have rarely been quantified. Through the removal of food resources from the forest floor and subsequent transport to nests, ants play an important role in the redistribution of nutrients in rainforests. This is an essential ecosystem process and a key energetic link between higher trophic levels, decomposers and primary producers. We used the removal of carbohydrate, protein and seed baits as a proxy to quantify the contribution that ants, other invertebrates and vertebrates make to the redistribution of nutrients around the forest floor, and determined to what extent there is functional redundancy across ants, other invertebrate and vertebrate groups. Using a large-scale, field-based manipulation experiment, we suppressed ants from c. 1 ha plots in a lowland tropical rainforest in Sabah, Malaysia. Using a combination of treatment and control plots, and cages to exclude vertebrates, we made food resources available to: (i) the whole foraging community, (ii) only invertebrates and (iii) only non-ant invertebrates. This allowed us to partition bait removal into that taken by vertebrates, non-ant invertebrates and ants. Additionally, we examined how the non-ant invertebrate community responded to ant exclusion. When the whole foraging community had access to food resources, we found that ants were responsible for 52% of total bait removal whilst vertebrates and non-ant invertebrates removed the remaining 48%. Where vertebrates were excluded, ants carried out 61% of invertebrate-mediated bait removal, with all other invertebrates removing the remaining 39%. Vertebrates were responsible for just 24% of bait removal and invertebrates (including ants) collectively removed the remaining 76%. There was no compensation in bait removal rate when ants and vertebrates were excluded, indicating low functional redundancy between these groups. This study is the first to quantify the contribution of ants to the removal of food resources from rainforest floors and thus nutrient redistribution. We demonstrate that ants are functionally unique in this role because no other organisms compensated to maintain bait removal rate in their absence. As such, we strengthen a growing body of evidence establishing ants as ecosystem engineers, and provide new insights into the role of ants in maintaining key ecosystem processes. In this way, we further our basic understanding of the functioning of tropical rainforest ecosystems.
    MeSH terms: Animals; Ants/physiology*; Borneo; Feeding Behavior; Invertebrates/physiology; Malaysia; Phylogeny; Vertebrates/physiology; Food Chain*; Rainforest*
  3. Li X, Xu A, Sheng H, Ting TH, Mao X, Huang X, et al.
    Pediatr Diabetes, 2018 03;19(2):251-258.
    PMID: 28791793 DOI: 10.1111/pedi.12560
    BACKGROUND: Sulfonylurea therapy can improve glycemic control and ameliorate neurodevelopmental outcomes in patients suffering from neonatal diabetes mellitus (NDM) with KCNJ11 or ABCC8 mutations. As genetic testing results are often delayed, it remains controversial whether sulfonylurea treatment should be attempted immediately at diagnosis or doctors should await genetic confirmation.

    OBJECTIVE: This study aimed to investigate the effectiveness and safety of sulfonylurea therapy in Chinese NDM patients during infancy before genetic testing results were available.

    METHODS: The medical records of NDM patients with their follow-up details were reviewed and molecular genetic analysis was performed. Sulfonylurea transfer regimens were applied in patients diagnosed after May 2010, and glycemic status and side effects were evaluated in each patient.

    RESULTS: There were 23 NDM patients from 22 unrelated families, 10 had KCNJ11 mutations, 3 harbored ABCC8 mutations, 1 had INS mutations, 4 had chromosome 6q24 abnormalities, 1 had a deletion at chromosome 1p36.23p36.12, and 4 had no genetic abnormality identified. Sixteen NDM infants were treated with glyburide at an average age of 49 days (range 14-120 days) before genetic confirmation. A total of 11 of 16 (69%) were able to successfully switch to glyburide with a more stable glucose profile. The responsive glyburide dose was 0.51 ± 0.16 mg/kg/d (0.3-0.8 mg/kg/d), while the maintenance dose was 0.30 ± 0.07 mg/kg/d (0.2-0.4 mg/kg/d). No serious adverse events were reported.

    CONCLUSIONS: Molecular genetic diagnosis is recommended in all patients with NDM. However, if genetic testing results are delayed, sulfonylurea therapy should be considered before such results are received, even in infants with newly diagnosed NDM.

    MeSH terms: China; Chromosome Deletion; Chromosomes, Human, Pair 1/genetics; Diabetes Mellitus/drug therapy*; Diabetes Mellitus/genetics; DNA Mutational Analysis; Dose-Response Relationship, Drug; Female; Follow-Up Studies; Glyburide/administration & dosage; Glyburide/adverse effects; Glyburide/therapeutic use*; Hospitals, Pediatric; Humans; Hypoglycemic Agents/administration & dosage; Hypoglycemic Agents/adverse effects; Hypoglycemic Agents/therapeutic use*; Infant; Infant, Newborn; Infant, Newborn, Diseases/drug therapy*; Infant, Newborn, Diseases/genetics; Insulin/adverse effects; Insulin/genetics; Insulin/therapeutic use; Insulin/chemistry; Male; Mutation; Cohort Studies; Drug Monitoring; Potassium Channels, Inwardly Rectifying/genetics; Potassium Channels, Inwardly Rectifying/chemistry; Chromosome Disorders/drug therapy; Chromosome Disorders/genetics; Sulfonylurea Receptors/genetics; Sulfonylurea Receptors/chemistry
  4. Alyahyawi A, Jupp T, Alkhorayef M, Bradley DA
    Appl Radiat Isot, 2018 Aug;138:45-49.
    PMID: 28780202 DOI: 10.1016/j.apradiso.2017.07.011
    In the modern clinical practice of diagnostic radiology there is a growing demand for radiation dosimetry, it also being recognized that with increasing use of X-ray examinations additional population dose will result, accompanied by an additional albeit low potential for genetic consequences. At the doses typical of diagnostic radiology there is also a low statistical risk for cancer induction; in adhering to best practice, to be also implied is a low but non-negligible potential for deterministic sensitive organ responses, including in regard to the skin and eyes. Risk reduction is important, in line with the principle of ALARP, both in regard to staff and patients alike; for the latter modern practice is usually guided by Dose Reference Levels (DRL) while for the former and members of the public, legislated controls (supported by safe working practices) pertain. As such, effective, reliable and accurate means of dosimetry are required in support of these actions. Recent studies have shown that Ge-doped-silica glass fibres offer several advantages over the well-established phosphor-based TL dosimeters (TLD), including excellent sensitivity at diagnostic doses as demonstrated herein, low fading, good reproducibility and re-usability, as well as representing a water impervious, robust dosimetric system. In addition, these silica-based fibres show good linearity over a wide dynamic range of dose and dose-rate and are directionally independent. In the present study, we investigate tailor made doped-silica glass thermoluminescence (TL) for applications in medical diagnostic imaging dosimetry. The aim is to develop a dosimeter of sensitivity greater than that of the commonly used LiF (Mg,Ti) phosphor. We examine the ability of such doped glass media to detect the typically low levels of radiation in diagnostic applications (from fractions of a mGy through to several mGy or more), including, mammography and dental radiology, use being made of x-ray tubes located at the Royal Surrey County Hospital. We further examine dose-linearity, energy response and fading.
    MeSH terms: Dose-Response Relationship, Radiation; Female; Germanium*; Glass*; Humans; Mammography; Radiation Dosage; Radiography; Radiography, Dental; Reference Standards; Silicon Dioxide*; Thermoluminescent Dosimetry/methods*; Thermoluminescent Dosimetry/standards; Thermoluminescent Dosimetry/statistics & numerical data
  5. Kasim SKM, Razak IA, Yusof ZYM
    Int Dent J, 2018 Feb;68(1):31-38.
    PMID: 28782099 DOI: 10.1111/idj.12325
    AIM: To assess the knowledge and perceptions of Malaysian government dentists regarding the shortened dental arch (SDA) concept and its application in clinical practice.

    BACKGROUND: The SDA concept refers to a specific type of dentition with intact anterior teeth and a reduction in posterior occlusal pairs. Dentists' knowledge and perceptions of the SDA concept can influence its application in clinical practice.

    METHODS: A self-administered questionnaire on the SDA concept was distributed to 326 government dentists in the states of Selangor and Kuala Lumpur, Malaysia. The data were analysed using SPSS version 22 software.

    RESULTS: The response rate was 84.0%. The majority of respondents had good knowledge on five of six knowledge items and good attitudes towards 10 of 17 perception items. However, only one-fifth (20.4%) reported having applied the SDA concept in the clinic. A larger number of participants who graduated locally than who graduated abroad perceived that patients <60 years of age, without molar support, can attain acceptable chewing function and that SDA treatment does not lead to loss of occlusal vertical dimension (P < 0.05). A larger number of participants with ≤5 years of work experience than with >5 years of work experience perceived that the SDA concept enables simpler treatment planning (P < 0.05). Finally, a larger number of participants who graduated abroad than who graduated locally observed that patients without molar support had temporomandibular joint problems (P < 0.05).

    CONCLUSION: Although Malaysian government dentists have good knowledge and perceptions of the SDA concept, it is not widely applied in the clinic. Concerted efforts in SDA training of dentists are needed to help to shorten denture waiting lists and reduce costs.

    MeSH terms: Attitude; Dental Arch; Dental Care; Dentures; Dentists; Dentition; Government; Humans; Malaysia; Mastication; Molar; Surveys and Questionnaires; Software; Temporomandibular Joint; Vertical Dimension; Waiting Lists
  6. Tan WN, Lim JQ, Afiqah F, Nik Mohamed Kamal NNS, Abdul Aziz FA, Tong WY, et al.
    Nat Prod Res, 2018 Apr;32(7):854-858.
    PMID: 28782393 DOI: 10.1080/14786419.2017.1361951
    Garcinia atroviridis Griff. ex T. Anders. is used as a medication agent in folkloric medicine. The present study was to examine the chemical composition of the stem bark and leaf of G. atroviridis as well as their cytotoxic effects against MCF-7 cells. The constituents obtained by hydrodistillation were identified using GC-MS. The stem bark oil (EO-SB) composed mainly the palmitoleic acid (51.9%) and palmitic acid (21.9%), while the leaf oil (EO-L) was dominated by (E)-β-farnesene (58.5%) and β-caryophyllene (16.9%). Treatment of MCF-7 cells using EO-L (100 μg/mL) caused more than 50% cell death while EO-SB did not induce cytotoxic effect. EO-L has stimulated the growth of BEAS-2B normal cells, but not in MCF-7 cancerous cells. The IC50 of EO-L in MCF-7 and BEAS-2B cells were 71 and 95 μg/mL, respectively. A combination treatment of EO-L and tamoxifen induced more cell death than the treatment with drug alone at lower doses.
    MeSH terms: Combined Modality Therapy; Fatty Acids, Monounsaturated; Humans; Gas Chromatography-Mass Spectrometry; Sesquiterpenes; Tamoxifen; Cell Death; Plant Leaves; Palmitic Acid; Inhibitory Concentration 50; Plant Bark; Garcinia; MCF-7 Cells
  7. Lee YM, Sheppard E
    Ergonomics, 2018 Mar;61(3):444-455.
    PMID: 28782425 DOI: 10.1080/00140139.2017.1364790
    Use of Daytime Running Lights (DRL) is mandatory in many countries for motorcycles, and in some for cars. However, in developing countries, DRLs may be optional or compliance low. The effect of car or motorcycle headlights and lighting conditions on Malaysian drivers' ability to perceive and judge the safety of pulling out was investigated. Stimuli were photographs depicting either daytime or nighttime taken at a T-junction with approaching vehicles with headlights on or off. Headlights improved drivers' ability to perceive cars and motorcycles in the nighttime photographs but not the daytime photographs, although this could be due to the bright weather in the photographs. Drivers judged it less safe to pull out when approaching motorcycles had headlights on than off, regardless of the lighting conditions, supporting the utility of DRL for motorcycles. Headlights did not affect judgements for cars, questioning the utility of DRL for cars. Practitioner Summary: The effect of headlights and lighting conditions on drivers' ability to perceive and make judgements about the safety of pulling out was investigated. Daytime Running Lights influenced drivers' decision-making about the safety of pulling out in front of motorcycles, illustrating the importance of having automatic headlights equipped.
    MeSH terms: Adult; Automobile Driving*; Automobiles; Decision Making*; Female; Humans; Lighting*; Male; Motorcycles; Safety*; Visual Perception; Young Adult
  8. Tin HS, Palaniveloo K, Anilik J, Vickneswaran M, Tashiro Y, Vairappan CS, et al.
    Microb Ecol, 2018 Feb;75(2):459-467.
    PMID: 28779295 DOI: 10.1007/s00248-017-1043-6
    Decline in forest productivity due to forest conversion is defining the Bornean landscape. Responses of bacterial communities due to land-use changes are vital and could define our understanding of ecosystem functions. This study reports the changes in bacterial community structure in organic soil (0-5 cm; O-Horizon) and organic-mineral soil (5-15 cm; A-Horizon) across Maliau Basin Conservation Area old growth forest (MBOG), Fragment E logged forest (FELF) located in Kalabakan Forest Reserve to Benta Wawasan oil palm plantation (BWOP) using two-step PCR amplicon analysis of bacteria DNA on Illumina Miseq next generation sequencing. A total of 30 soil samples yielded 893,752-OTU reads at ≥97% similarity from 5,446,512 good quality sequences. Soil from BWOP plantation showed highest unshared OTUs for organic (49.2%) and organic-mineral (50.9%) soil. MBOG soil showed a drop in unshared OTUs between organic (48.6%) and organic-mineral (33.9%). At phylum level, Proteobacteria dominated MBOG but shifted to Actinobacteria in logged and plantation soil. Present findings also indicated that only FELF exhibited change in bacterial communities along the soil depth, moving from the organic to the organic-mineral layer. Both layers of BWOP plantation soils deviated from other forests' soil in β-diversity analysis. To our knowledge, this is the first report on transitions of bacterial community structures with different soil horizons in the tropical rainforest including Borneo, Sabah. Borneo tropical soils form a large reservoir for soil bacteria and future exploration is needed for fully understanding the diversity structure and their bacterial functional properties.
    MeSH terms: Agriculture; Bacteria/classification; Bacteria/genetics; Bacteria/isolation & purification*; Malaysia; Phylogeny; Soil/chemistry; Soil Microbiology*; Ecosystem; Biodiversity; Forests
  9. Karimi E, Ghorbani Nohooji M, Habibi M, Ebrahimi M, Mehrafarin A, Khalighi-Sigaroodi F
    Nat Prod Res, 2018 Aug;32(16):1991-1995.
    PMID: 28774179 DOI: 10.1080/14786419.2017.1359171
    The antioxidant activities of crude extract fractions using Hexane, Chloroform, Ethyl Acetate, Butanol and Water of Clematis orientalis and Clematis ispahanica were investigated. 1,1-diphenyl-2-picryl-hydrazyl (DPPH) assay and the ferric reducing/antioxidant potential (FRAP) were used to evaluate the antioxidant capacity. The total phenolics were found to be 4.37-9.38 and 1.32-11.37 mg gallic acid equivalents (GAE)/g in different fractions for C. orientalis and C. ispahanica, respectively. The ethyl acetate fraction of C. orientalis and chloroform fraction of C. ispahanica showed the highest DPPH and FRAP activities at a concentration of 300 μg/mL. The predominant phenolic compounds identified by HPLC in C. orientalis were Resorcinol (603.5 μg/g DW) in chloroform fraction and Ellagic acid (811.7 μg/g DW) in chloroform fraction of C. ispahanica.
    MeSH terms: Antioxidants/isolation & purification*; Antioxidants/chemistry; Chromatography, High Pressure Liquid; Flavonoids/chemistry*; Phenols/chemistry*; Plant Extracts/chemistry*; Solvents; Ranunculaceae/chemistry; Clematis/chemistry*
  10. Phang KC, Akhter A, Tizen NMS, Rahman FA, Zahratul Azma R, Elyamany G, et al.
    J Clin Pathol, 2018 Mar;71(3):215-220.
    PMID: 28775174 DOI: 10.1136/jclinpath-2017-204548
    AIMS: The cell of origin (COO) based molecular characterisation into germinal centre B-cell-like (GCB) and activated B-cell-like (ABC) subtypes are central to the pathogenesis and clinical course in diffuse large B-cell lymphoma (DLBCL). Globally, clinical laboratories employ pragmatic but less than ideal immunohistochemical (IHC) assay for COO classification. Novel RNA-based platforms using routine pathology samples are emerging as new gold standard and offer unique opportunities for assay standardisation for laboratories across the world. We evaluated our IHC protocols against RNA-based technologies to determine concordance; additionally, we gauged the impact of preanalytical variation on the performance of Lymph2Cx assay.

    METHODS: Diagnostic biopsies (n=104) were examined for COO classification, employing automated RNA digital quantification assay (Lymph2Cx). Results were equated against IHC-based COO categorisation. Assay performance was assessed through its impact on overall survival (OS).

    RESULTS: 96 (92%) informative samples were labelled as GCB (38/96; 40%) and non-GCB (58/96; 60%) by IHC evaluation. Lymph2Cx catalogued 36/96 (37%) samples as GCB, 45/96 (47%) as ABC and 15/96 (16%) as unclassified. Lymph2Cx being reference, IHC protocol revealed sensitivity of 81% for ABC and 75% for GCB categorisation and positive predictive value of 81% versus 82%, respectively. Lymph2Cx-based COO classification performed superior to Hans algorithm in predicting OS (log rank test, p=0.017 vs p=0.212).

    CONCLUSIONS: Our report show that current IHC-based protocols for COO classification of DLBCL at UKM Malaysia are in line with previously reported results and marked variation in preanalytical factors do not critically impact Lymph2Cx assay quality.

    MeSH terms: Adolescent; Adult; Aged; Aged, 80 and over; B-Lymphocytes/pathology; Female; Humans; Immunohistochemistry; Malaysia; Male; Middle Aged; Prognosis; Retrospective Studies; RNA/analysis*; Reproducibility of Results; Cohort Studies; Lymphoma, Large B-Cell, Diffuse/classification*; Lymphoma, Large B-Cell, Diffuse/diagnosis; Lymphoma, Large B-Cell, Diffuse/pathology; Germinal Center/pathology; Tissue Array Analysis; Kaplan-Meier Estimate; Young Adult
  11. Maekawa F, Nagino K, Yang J, Htike NTT, Tsukahara S, Ubuka T, et al.
    Gen Comp Endocrinol, 2018 01 15;256:63-70.
    PMID: 28765073 DOI: 10.1016/j.ygcen.2017.07.025
    The National Institute for Environmental Studies (NIES) of Japan established a strain of Japanese quail (Coturnix japonica) known as NIES-L by rotation breeding in a closed colony for over 35years; accordingly, the strain has highly inbred-like characteristics. Another strain called NIES-Brn has been maintained by randomized breeding in a closed colony to produce outbred-like characteristics. The current study aimed to characterize intermale aggressive behaviors in both strains and to identify possible factors regulating higher aggression in the hypothalamus, such as sex hormone and neuropeptide expression. Both strains displayed a common set of intermale aggressive behaviors that included pecking, grabbing, mounting, and cloacal contact behavior, although NIES-Brn quail showed significantly more grabbing, mounting, and cloacal contact behavior than did NIES-L quail. We examined sex hormone levels in the blood and diencephalon in both strains. Testosterone concentrations were significantly higher in the blood and diencephalon of NIES-Brn quail compared to NIES-L quail. We next examined gene expression in the hypothalamus of both strains using an Agilent gene expression microarray and real-time RT-PCR and found that gene expression of mesotocin (an oxytocin homologue) was significantly higher in the hypothalamus of NIES-Brn quail compared to NIES-L quail. Immunohistochemistry of the hypothalamus revealed that numbers of large cells (cell area>500μm2) expressing mesotocin were significantly higher in the NIES-Brn strain compared to the NIES-L strain. Taken together, our findings suggest that higher testosterone and mesotocin levels in the hypothalamus may be responsible for higher aggression in the NIES-Brn quail strain.
    MeSH terms: Aggression/physiology*; Animals; Coturnix/genetics; Coturnix/physiology*; Estradiol/blood; Gene Expression Regulation; Hypothalamus/metabolism; Japan; Male; Oxytocin/analogs & derivatives; Oxytocin/genetics; Oxytocin/metabolism; RNA, Messenger/genetics; RNA, Messenger/metabolism; Species Specificity; Testosterone/blood
  12. Cheung JPY, Yiu KKL, Samartzis D, Kwan K, Tan BB, Cheung KMC
    Spine (Phila Pa 1976), 2018 04 01;43(7):E399-E405.
    PMID: 28767632 DOI: 10.1097/BRS.0000000000002358
    STUDY DESIGN: Prospective study.

    OBJECTIVE: To identify the factors that are associated with rod slippage and to study the pattern of achieved length gain with a standard distraction methodology.

    SUMMARY OF BACKGROUND DATA: Ability to achieve successful magnetically controlled growing rod (MCGR) distraction is crucial for gradual spine lengthening. Rod slippage has been described as a failure of internal magnet rotation leading to a slippage and an inability to distract the rod. However, its onset, significance, and risk factors are currently unknown. In addition, how this phenomenon pertains to actual distracted lengths is also unknown.

    METHODS: A total of 22 patients with MCGR and at least six distraction episodes were prospectively studied. Patients with rod slippage occurring less than six distraction episodes were considered early rod slippage whereas those with more than six episodes or have yet to slip were grouped as late rod slippage. The association of parameters including body habitus, maturity status, age of implantation, total number of distractions, months of distraction from initial implantation, initial and postoperative Cobb angle, T1-T12, T1-S1, T5-T12 kyphosis, curve flexibility, instrumented length, and distance between magnets in dual rods and between the magnets and apex of the curve with early or late onset of rod slippage were studied. Differences between expected and achieved distraction lengths were assessed with reference to rod slippage episodes and rod exchanges to determine any patterns of diminishing returns.

    RESULTS: Patients had mean age of 7.1 years at diagnosis with mean follow-up of 49.8 months. A mean 32.4 distractions were performed per patient. Early rod slippage occurred in 14 patients and late rod slippage occurred in eight patients. Increased height, weight, body mass index, older age, increased T1-12 and T1-S1 lengths, and less distance between magnets were significantly associated with early rod slippage. Expected distraction lengths did not translate to achieve distraction lengths and reduced gains were only observed after achieving one-third of the allowable distracted length in the MCGR. Length gains return to baseline after rod exchange.

    CONCLUSION: This is the first study to specifically analyze the impact of rod slippage on distraction lengths and the risk factors associated with its onset and frequency. Increased body habitus and reduced distance between internal magnets significantly influenced rod slippage events. Diminishing returns in distracted length gains were only observed after a period of usage.

    LEVEL OF EVIDENCE: 3.

    MeSH terms: Adolescent; Bone Lengthening*; Child; Female; Follow-Up Studies; Humans; Magnetics*; Male; Postoperative Period; Prospective Studies; Risk Factors; Spine/surgery*; Internal Fixators*; Treatment Outcome
  13. Muthukumar P, Balasubramaniam P, Ratnavelu K
    ISA Trans, 2018 Nov;82:51-61.
    PMID: 28755926 DOI: 10.1016/j.isatra.2017.07.007
    This paper proposes a generalized robust synchronization method for different dimensional fractional order dynamical systems with mismatched fractional derivatives in the presence of function uncertainty and external disturbance by a designing sliding mode controller. Based on the proposed theory of generalized robust synchronization criterion, a novel audio cryptosystem is proposed for sending or sharing voice messages secretly via insecure channel. Numerical examples are given to verify the potency of the proposed theories.
    MeSH terms: Feedback; Voice; Nonlinear Dynamics; Uncertainty
  14. Alanazi HO, Abdullah AH, Qureshi KN, Ismail AS
    Ir J Med Sci, 2018 May;187(2):501-513.
    PMID: 28756541 DOI: 10.1007/s11845-017-1655-3
    INTRODUCTION: Information and communication technologies (ICTs) have changed the trend into new integrated operations and methods in all fields of life. The health sector has also adopted new technologies to improve the systems and provide better services to customers. Predictive models in health care are also influenced from new technologies to predict the different disease outcomes. However, still, existing predictive models have suffered from some limitations in terms of predictive outcomes performance.

    AIMS AND OBJECTIVES: In order to improve predictive model performance, this paper proposed a predictive model by classifying the disease predictions into different categories. To achieve this model performance, this paper uses traumatic brain injury (TBI) datasets. TBI is one of the serious diseases worldwide and needs more attention due to its seriousness and serious impacts on human life.

    CONCLUSION: The proposed predictive model improves the predictive performance of TBI. The TBI data set is developed and approved by neurologists to set its features. The experiment results show that the proposed model has achieved significant results including accuracy, sensitivity, and specificity.

    MeSH terms: Data Accuracy; Delivery of Health Care/methods*; Female; Humans; Male; Medicine/methods*; Prognosis
  15. Majid HA, Keow LP, Islam T, Su TT, Cantwell M, Taib NA, et al.
    J Acad Nutr Diet, 2018 04;118(4):705-713.
    PMID: 28756991 DOI: 10.1016/j.jand.2017.05.024
    BACKGROUND: Lifestyle factors, such as diet, body weight, and physical activity, are linked to better survival after breast cancer (BC) diagnosis. A high percentage of the Malaysian population is overweight or obese. In addition, studies have shown a disparity in survival among Malaysian women compared with other higher-income countries. The Malaysian Breast Cancer Survivorship Cohort (MyBCC) study aims to study lifestyle factors that affect survival in BC survivors. These are the preliminary findings on the nutritional status of Malaysian BC survivors.

    OBJECTIVE: Our aim was to evaluate the nutritional status of BC survivors at 1 year after diagnosis.

    DESIGN: This was a cross-sectional study of 194 participants from the MyBCC study, recruited within 1 year of their diagnosis. Participants completed a 3-day food diary.

    PARTICIPANTS: Malaysian women (aged 18 years and older) who were newly diagnosed with primary BC, managed at the University Malaya Medical Center, and able to converse either in Malay, English, or Mandarin were included.

    MAIN OUTCOME MEASURES: Dietary intake and prevalence of overweight or obesity among participants 1 year after diagnosis were measured.

    STATISTICAL ANALYSES PERFORMED: Student's t test and analysis of variance or its equivalent nonparametric test were used for association in continuous variables.

    RESULTS: About 66% (n=129) of participants were overweight or obese and >45% (n=86) had high body fat percentage 1 year after diagnosis. The participants' diets were low in fiber (median=8.7 g/day; interquartile range=7.2 g/day) and calcium (median=458 mg/day; interquartile range=252 mg/day). Ethnicity and educational attainment contributed to the differences in dietary intake among participants. Higher saturated fat and lower fiber intake were observed among Malay participants compared with other ethnic groups.

    CONCLUSIONS: Overweight and obesity were highly prevalent among BC survivors and suboptimal dietary intake was observed. Provision of an individualized medical nutrition therapy by a qualified dietitian is crucial as part of comprehensive BC survivorship care.

    MeSH terms: Adolescent; Adult; Breast Neoplasms/etiology; Breast Neoplasms/physiopathology*; Cross-Sectional Studies; Diet/statistics & numerical data; Diet Surveys; Female; Humans; Life Style; Malaysia/epidemiology; Middle Aged; Nutritional Status*; Obesity/complications; Obesity/epidemiology*; Cohort Studies; Diet Records; Prevalence; Overweight/complications; Overweight/epidemiology*; Young Adult
  16. Sulieman A, Elhag B, Alkhorayef M, Babikir E, Theodorou K, Kappas C, et al.
    Appl Radiat Isot, 2018 Aug;138:40-44.
    PMID: 28757351 DOI: 10.1016/j.apradiso.2017.07.013
    The objectives of this study are to assess pediatric radiation exposure in certain barium studies and to quantify the organ and effective doses and radiation risk resultant from patients' irradiation. A total of 69 pediatric barium studies for upper and lower gastrointestinal tract. Patients' radiation dose was quantified in terms of Entrance surface air kerma (ESAKs) using exposure parameters and DosCal software. Organ and effective doses (E) were extrapolated using national Radiological Protection Board software (NRPB-R279). The mean ± (SD) and the range of patient doses per procedure were 3.7 ± 0.4 (1.0-13.0)mGy, 7.4 ± 1.7(5.5-8.0)mGy and 1.4 ± 0.9 (0.5-3.6)mGy for barium meal, swallow and enema, respectively. The mean effective doses were 0.3 ± 0.03 (0.08-1.1)mSv, 0.2 ± 1.6 (0.44-0.7)mSv and 0.3 ± 0.9 (0.1-0.8)mSv at the same order. The radiation dose were higher compared to previous studies. Therefore, pediatrics are exposed to avoidable radiation exposure. Certain optimization measures are recommended along with establishing national diagnostic reference level (DRL) to reduce the radiation risk.
    MeSH terms: Barium*; Barium Sulfate; Child; Child, Preschool; Contrast Media*; Diatrizoate Meglumine; Female; Humans; Infant; Male; Radiation Dosage; Radiation Protection; Radiometry/methods; Radiometry/statistics & numerical data; Risk Factors; Gastrointestinal Tract/radiation effects*
  17. Onwude DI, Hashim N, Abdan K, Janius R, Chen G
    J Sci Food Agric, 2018 Mar;98(4):1310-1324.
    PMID: 28758207 DOI: 10.1002/jsfa.8595
    BACKGROUND: Drying is a method used to preserve agricultural crops. During the drying of products with high moisture content, structural changes in shape, volume, area, density and porosity occur. These changes could affect the final quality of dried product and also the effective design of drying equipment. Therefore, this study investigated a novel approach in monitoring and predicting the shrinkage of sweet potato during drying. Drying experiments were conducted at temperatures of 50-70 °C and samples thicknesses of 2-6 mm. The volume and surface area obtained from camera vision, and the perimeter and illuminated area from backscattered optical images were analysed and used to evaluate the shrinkage of sweet potato during drying.

    RESULTS: The relationship between dimensionless moisture content and shrinkage of sweet potato in terms of volume, surface area, perimeter and illuminated area was found to be linearly correlated. The results also demonstrated that the shrinkage of sweet potato based on computer vision and backscattered optical parameters is affected by the product thickness, drying temperature and drying time. A multilayer perceptron (MLP) artificial neural network with input layer containing three cells, two hidden layers (18 neurons), and five cells for output layer, was used to develop a model that can monitor, control and predict the shrinkage parameters and moisture content of sweet potato slices under different drying conditions. The developed ANN model satisfactorily predicted the shrinkage and dimensionless moisture content of sweet potato with correlation coefficient greater than 0.95.

    CONCLUSION: Combined computer vision, laser light backscattering imaging and artificial neural network can be used as a non-destructive, rapid and easily adaptable technique for in-line monitoring, predicting and controlling the shrinkage and moisture changes of food and agricultural crops during drying. © 2017 Society of Chemical Industry.

    MeSH terms: Computers*; Desiccation/instrumentation; Desiccation/methods*; Lasers; Light; Scattering, Radiation; Temperature; Neural Networks (Computer)*; Ipomoea batatas*; Plant Tubers/anatomy & histology*; Optical Devices
  18. Awang H, Mansor N, Nai Peng T, Nik Osman NA
    J Int Med Res, 2018 Jan;46(1):175-184.
    PMID: 28760083 DOI: 10.1177/0300060517710857
    Objectives Ageing is often associated with deteriorating mental and physical health and the need for long-term care, creating a fear of ageing. We investigated what people fear most in terms of disabling chronic diseases and their concerns regarding having long-term illnesses. Methods Data were obtained from an online survey of 518 respondents aged 40 years and older residing in Malaysia, which was based on a convenience sample collected in May 2015 to January 2016. Data were analyzed using chi-squared tests and multinomial logistic regression. Results Of the most dreaded diseases, heart disease and cancer are life-threatening; however, dementia, diabetes, and hypertension persist and have a disabling effect for a long time. While there were variations in the diseases feared most across sex, ethnicity, and place of residence, the biggest worry for all respondents with regard to having a long-term illness was that they would become a burden to their family, a concern that superseded fear of dying. Conclusions We found our survey respondents had a fear of chronic diseases and placing a burden on others. Thus, there is a need to provide motivation for people to adopt a healthy lifestyle, to remain healthy.
    MeSH terms: Aged; Aging/psychology*; Anxiety/psychology*; Chronic Disease; Dementia/physiopathology; Dementia/psychology; Diabetes Mellitus/physiopathology; Diabetes Mellitus/psychology; Fear/psychology*; Female; Heart Diseases/physiopathology; Heart Diseases/psychology; Humans; Hypertension/physiopathology; Hypertension/psychology; Malaysia; Male; Neoplasms/physiopathology; Neoplasms/psychology; Surveys and Questionnaires; Anticipation, Psychological*
  19. Dietz HP, Stankiewicz M, Atan IK, Ferreira CW, Socha M
    Int Urogynecol J, 2018 May;29(5):723-728.
    PMID: 28762179 DOI: 10.1007/s00192-017-3426-0
    INTRODUCTION AND HYPOTHESIS: Vaginal laxity is a poorly understood symptom of pelvic floor dysfunction. The purpose of this study was to investigate associations between the symptom of vaginal laxity and its bother on the one hand, and demographic data, other symptoms, and findings on examination on the other hand.

    METHODS: This was a retrospective observational study at a tertiary urogynecological unit. A total of 337 patients were seen for a standardized interview, clinical examination (ICS POP-Q) and 4D translabial ultrasonography. Stored imaging data were analyzed offline to evaluate functional pelvic floor anatomy and investigate associations with symptoms and other findings.

    RESULTS: Of the 337 women seen during the study period, 13 were excluded due to missing data, leaving 324. Vaginal laxity was reported by 24% with a mean bother of 5.7. In a univariate analysis, this symptom was associated with younger age, vaginal parity, POP symptoms and bother, clinically and sonographically determined POP and hiatal area on Valsalva maneuver.

    CONCLUSIONS: Vaginal laxity or 'looseness' is common in our urogynecology service at a prevalence of 24%. The associated bother is almost as high as the bother associated with conventional prolapse symptoms. It is associated with younger age, vaginal parity, symptoms of prolapse, prolapse bother and objective prolapse on POP-Q examination and imaging, suggesting that vaginal laxity may be considered a symptom of prolapse. The strongest associations were found with gh + pb and hiatal area on Valsalva maneuver, suggesting that vaginal laxity is a manifestation of levator ani hyperdistensibility.

    MeSH terms: Female; Humans; Parity; Physical Examination; Pregnancy; Retrospective Studies; Ultrasonography; Vagina; Valsalva Maneuver; Prevalence; Pelvic Floor; Pelvic Organ Prolapse
  20. Mahachai V, Vilaichone RK, Pittayanon R, Rojborwonwitaya J, Leelakusolvong S, Maneerattanaporn M, et al.
    J Gastroenterol Hepatol, 2018 Jan;33(1):37-56.
    PMID: 28762251 DOI: 10.1111/jgh.13911
    Helicobacter pylori (H. pylori) infection remains to be the major cause of important upper gastrointestinal diseases such as chronic gastritis, peptic ulcer, gastric adenocarcinoma, and mucosa-associated lymphoid tissue lymphoma. H. pylori management in ASEAN: the Bangkok consensus report gathered key opinion leaders for the region to review and evaluate clinical aspects of H. pylori infection and to develop consensus statements, rationales, and grades of recommendation for the management of H. pylori infection in clinical practice in ASEAN countries. This ASEAN Consensus consisted of 34 international experts from 10 ASEAN countries, Japan, Taiwan, and the United States. The meeting mainly focused on four issues: (i) epidemiology and disease association; (ii) diagnostic tests; (iii) management; and (iv) follow-up after eradication. The final results of each workshop were presented for consensus voting by all participants. Statements, rationale, and recommendations were developed from the available current evidence to help clinicians in the diagnosis and treatment of H. pylori and its clinical diseases.
    MeSH terms: Amoxicillin/administration & dosage; Anti-Bacterial Agents/administration & dosage; Bismuth/administration & dosage; Drug Therapy, Combination; Follow-Up Studies; Gastritis/diagnosis; Gastritis/drug therapy*; Gastritis/microbiology*; Gastritis/epidemiology*; Humans; Japan; Metronidazole/administration & dosage; Taiwan; Tetracycline/administration & dosage; Thailand; United States; Helicobacter pylori*; Helicobacter Infections*; Treatment Outcome; Clarithromycin/administration & dosage; Fluoroquinolones/administration & dosage; Drug Resistance, Bacterial; Consensus*; Proton Pump Inhibitors/administration & dosage
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