Browse publications by year: 2016

  1. Jahanirad M, Wahab AW, Anuar NB
    Forensic Sci Int, 2016 May;262:242-75.
    PMID: 27060542 DOI: 10.1016/j.forsciint.2016.03.035
    Camera attribution plays an important role in digital image forensics by providing the evidence and distinguishing characteristics of the origin of the digital image. It allows the forensic analyser to find the possible source camera which captured the image under investigation. However, in real-world applications, these approaches have faced many challenges due to the large set of multimedia data publicly available through photo sharing and social network sites, captured with uncontrolled conditions and undergone variety of hardware and software post-processing operations. Moreover, the legal system only accepts the forensic analysis of the digital image evidence if the applied camera attribution techniques are unbiased, reliable, nondestructive and widely accepted by the experts in the field. The aim of this paper is to investigate the evolutionary trend of image source camera attribution approaches from fundamental to practice, in particular, with the application of image processing and data mining techniques. Extracting implicit knowledge from images using intrinsic image artifacts for source camera attribution requires a structured image mining process. In this paper, we attempt to provide an introductory tutorial on the image processing pipeline, to determine the general classification of the features corresponding to different components for source camera attribution. The article also reviews techniques of the source camera attribution more comprehensively in the domain of the image forensics in conjunction with the presentation of classifying ongoing developments within the specified area. The classification of the existing source camera attribution approaches is presented based on the specific parameters, such as colour image processing pipeline, hardware- and software-related artifacts and the methods to extract such artifacts. The more recent source camera attribution approaches, which have not yet gained sufficient attention among image forensics researchers, are also critically analysed and further categorised into four different classes, namely, optical aberrations based, sensor camera fingerprints based, processing statistics based and processing regularities based, to present a classification. Furthermore, this paper aims to investigate the challenging problems, and the proposed strategies of such schemes based on the suggested taxonomy to plot an evolution of the source camera attribution approaches with respect to the subjective optimisation criteria over the last decade. The optimisation criteria were determined based on the strategies proposed to increase the detection accuracy, robustness and computational efficiency of source camera brand, model or device attribution.
    MeSH terms: Attention; Color; Image Processing, Computer-Assisted; Social Support; Software; Artifacts; Multimedia; Knowledge; Data Mining
  2. Harun NA, Finlay AY, Salek M, Piguet V
    Br J Dermatol, 2016 Sep;175(3):572-82.
    PMID: 27060980 DOI: 10.1111/bjd.14650
    BACKGROUND: Although multiple factors influence discharge decisions, there is no structured guidance to assist clinicians in making informed decisions. A discharge information checklist might improve the appropriateness of dermatology clinicians' discharge decisions.

    OBJECTIVES: To generate consensus among dermatologists on the content of an outpatient discharge checklist, to create one and to seek clinicians' opinions on its usefulness.

    METHODS: Seventeen consultant dermatologists from five National Health Service trusts completed a 72-item Delphi questionnaire. A five-point Likert scale was used to rate each item for importance in contributing to a high-quality discharge decision. Eighteen clinicians completed a questionnaire evaluating checklist use.

    RESULTS: Consensus was determined when ≥ 75% of consultants rated an item 'very important' or 'important'. There was strong inter-rater reliability (intraclass correlation coefficient = 0·958) and fair inter-rater agreement (Fleiss kappa = 0·269). There were 26 consensus-agreed items, condensed to 13 that formed the 'traffic-light' checklist. These are disease-related issues (diagnostic certainty, disease severity, treatment appropriateness, patient manageable in primary care, patient's benefit from follow-up), patient empowerment issues (understanding diagnosis and treatment outcome, having a clear plan, treatment side-effects, ability to self-manage) and addressing concerns (patient concerns, easy reaccess to secondary care, whether patient and clinician are happy with the decision). Twelve clinicians (67%) found the checklist useful, 11 (61%) wanted to use it in future, 10 (56%) thought it was useful for training and three (17%) said it helped their thinking. Clinicians suggested its use for auditing and for training clinicians and administrators.

    CONCLUSIONS: Items were identified to create an outpatient discharge information checklist, which demonstrated high acceptability.

    MeSH terms: Clinical Decision-Making; Adult; Aged; Ambulatory Care*; Attitude of Health Personnel; Consultants; Equipment Design; Female; Humans; Male; Middle Aged; Patient Discharge*; Pilot Projects; Surveys and Questionnaires; Skin Diseases/therapy*; Observer Variation; Consensus; Checklist/standards*; Dermatologists/psychology
  3. Mittal P, Klingler-Hoffmann M, Arentz G, Winderbaum L, Lokman NA, Zhang C, et al.
    Proteomics, 2016 06;16(11-12):1793-801.
    PMID: 27061135 DOI: 10.1002/pmic.201500455
    Metastasis is a crucial step of malignant progression and is the primary cause of death from endometrial cancer. However, clinicians presently face the challenge that conventional surgical-pathological variables, such as tumour size, depth of myometrial invasion, histological grade, lymphovascular space invasion or radiological imaging are unable to predict with accuracy if the primary tumour has metastasized. In the current retrospective study, we have used primary tumour samples of endometrial cancer patients diagnosed with (n = 16) and without (n = 27) lymph node metastasis to identify potential discriminators. Using peptide matrix assisted laser desorption/ionisation mass spectrometry imaging (MALDI-MSI), we have identified m/z values which can classify 88% of all tumours correctly. The top discriminative m/z values were identified using a combination of in situ sequencing and LC-MS/MS from digested tumour samples. Two of the proteins identified, plectin and α-Actin-2, were used for validation studies using LC-MS/MS data independent analysis (DIA) and immunohistochemistry. In summary, MALDI-MSI has the potential to identify discriminators of metastasis using primary tumour samples.
    MeSH terms: Diagnostic Imaging; Female; Humans; Lymph Nodes/pathology; Lymphatic Metastasis/diagnosis; Lymphatic Metastasis/genetics; Lymphatic Metastasis/pathology; Neoplasm Staging; Peptides/genetics; Peptides/isolation & purification*; Endometrial Neoplasms/diagnosis; Endometrial Neoplasms/genetics; Endometrial Neoplasms/pathology; Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization/methods*
  4. Lee WC, Khoo BE, Abdullah AFL
    Forensic Sci Int, 2016 06;263:1-9.
    PMID: 27061146 DOI: 10.1016/j.forsciint.2016.03.046
    Evidence in crime scenes available in the form of biological stains which cannot be visualized during naked eye examination can be detected by imaging their fluorescence using a combination of excitation lights and suitable filters. These combinations selectively allow the passage of fluorescence light emitted from the targeted stains. However, interference from the fluorescence generated by many of the surface materials bearing the stains often renders it difficult to visualize the stains during forensic photography. This report describes the use of background correction algorithm (BCA) to enhance the visibility of seminal stain, a biological evidence that fluoresces. While earlier reports described the use of narrow band-pass filters for other fluorescing evidences, here, we utilize BCA to enhance images captured using commonly available colour filters, yellow, orange and red. Mean-based contrast adjustment was incorporated into BCA to adjust the background brightness for achieving similarity of images' background appearance, a crucial step for ensuring success while implementing BCA. Experiment results demonstrated the effectiveness of our proposed colour filters' approach using the improved BCA in enhancing the visibility of seminal stains in varying dilutions on selected surfaces.
    MeSH terms: Algorithms; Color*; Fluorescence*; Humans; Image Enhancement/methods*; Image Processing, Computer-Assisted; Light*; Semen*; Forensic Sciences/methods
  5. Syed Nong Chek SR, Robinson S, Mohd Affandi A, Baharum N
    Int J Dermatol, 2016 Oct;55(10):1092-5.
    PMID: 27061170 DOI: 10.1111/ijd.13307
    BACKGROUND: Psoriasis involving the face is visible and can cause considerable emotional distress to patients. Its presence may also confer a poorer prognosis for the patient. This study sought to evaluate the characteristics of facial psoriasis in Malaysia.

    METHODS: A cross-sectional study conducted using data from the Malaysian Psoriasis Registry from 2007 to 2011. Specific risk factors, i.e., age, age of onset, gender, duration of disease, obesity group, body surface area, Dermatology Life Quality Index (DLQI), family history of psoriasis, nail involvement, psoriatic arthritis, phototherapy, systemic therapy, clinic visit, days of work/school, and hospital admission due to psoriasis in the last 6 months were analyzed.

    RESULTS: A total of 48.4% of patients had facial psoriasis. Variables significantly associated with facial psoriasis are younger age, younger age of onset of psoriasis of ≤ 40 years, male, severity of psoriasis involving >10% of the body surface area, higher DLQI of >10, nail involvement, and history of hospitalization due to psoriasis.

    CONCLUSION: This study found that facial psoriasis is not as rare as previously thought. Ambient ultraviolet light, sebum, and contact with chemicals from facial products may reduce the severity of facial psoriasis, but these factors do not reduce the prevalence of facial psoriasis. The association with younger age, younger age of onset, higher percentage of body surface area involvement, higher DLQI of > 10, nail involvement, and hospitalization due to psoriasis support the notion that facial psoriasis is a marker of severe disease.

    MeSH terms: Adult; Body Surface Area; Cross-Sectional Studies; Facial Dermatoses/etiology; Facial Dermatoses/epidemiology*; Female; Hospitalization; Humans; Malaysia/epidemiology; Male; Nail Diseases/etiology; Nail Diseases/epidemiology; Psoriasis/complications; Psoriasis/epidemiology*; Quality of Life; Risk Factors; Severity of Illness Index; Sex Factors; Age of Onset
  6. Price AJ, Travis RC, Appleby PN, Albanes D, Barricarte Gurrea A, Bjørge T, et al.
    Eur Urol, 2016 Dec;70(6):941-951.
    PMID: 27061263 DOI: 10.1016/j.eururo.2016.03.029
    BACKGROUND: Folate and vitamin B12 are essential for maintaining DNA integrity and may influence prostate cancer (PCa) risk, but the association with clinically relevant, advanced stage, and high-grade disease is unclear.

    OBJECTIVE: To investigate the associations between circulating folate and vitamin B12 concentrations and risk of PCa overall and by disease stage and grade.

    DESIGN, SETTING, AND PARTICIPANTS: A study was performed with a nested case-control design based on individual participant data from six cohort studies including 6875 cases and 8104 controls; blood collection from 1981 to 2008, and an average follow-up of 8.9 yr (standard deviation 7.3). Odds ratios (ORs) of incident PCa by study-specific fifths of circulating folate and vitamin B12 were calculated using multivariable adjusted conditional logistic regression.

    OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS: Incident PCa and subtype by stage and grade.

    RESULTS AND LIMITATIONS: Higher folate and vitamin B12 concentrations were associated with a small increase in risk of PCa (ORs for the top vs bottom fifths were 1.13 [95% confidence interval (CI), 1.02-1.26], ptrend=0.018, for folate and 1.12 [95% CI, 1.01-1.25], ptrend=0.017, for vitamin B12), with no evidence of heterogeneity between studies. The association with folate varied by tumour grade (pheterogeneity<0.001); higher folate concentration was associated with an elevated risk of high-grade disease (OR for the top vs bottom fifth: 2.30 [95% CI, 1.28-4.12]; ptrend=0.001), with no association for low-grade disease. There was no evidence of heterogeneity in the association of folate with risk by stage or of vitamin B12 with risk by stage or grade of disease (pheterogeneity>0.05). Use of single blood-sample measurements of folate and B12 concentrations is a limitation.

    CONCLUSIONS: The association between higher folate concentration and risk of high-grade disease, not evident for low-grade disease, suggests a possible role for folate in the progression of clinically relevant PCa and warrants further investigation.

    PATIENT SUMMARY: Folate, a vitamin obtained from foods and supplements, is important for maintaining cell health. In this study, however, men with higher blood folate levels were at greater risk of high-grade (more aggressive) prostate cancer compared with men with lower folate levels. Further research is needed to investigate the possible role of folate in the progression of this disease.

    MeSH terms: Aged; Folic Acid/blood*; Hexetidine; Humans; Male; Middle Aged; Prostatic Neoplasms/blood*; Prostatic Neoplasms/epidemiology; Risk; Vitamin B 12/blood*; Cohort Studies; Logistic Models; Odds Ratio; Case-Control Studies
  7. Moshiri A, Sharifi AM, Oryan A
    Clin Exp Pharmacol Physiol, 2016 Jul;43(7):659-84.
    PMID: 27061579 DOI: 10.1111/1440-1681.12577
    Simvastatin is a lipid lowering drug whose beneficial role on bone metabolism was discovered in 1999. Several in vivo studies evaluated its role on osteoporosis and fracture healing, however, controversial results are seen in the literature. For this reason, Simvastatin has not been the focus of any clinical trials as yet. This systematic review clears the mechanisms of action of Simvastatin on bone metabolism and focuses on in vivo investigations that have evaluated its role on osteoporosis and fracture repair to find out (i) whether Simvastatin is effective on treatment of osteoporosis and fracture repair, and (ii) which of the many available protocols may have the ability to be translated in the clinical setting. Simvastatin induces osteoinduction by increasing osteoblast activity and differentiation and inhibiting their apoptosis. It also reduces osteoclastogenesis by decreasing both the number and activity of osteoclasts and their differentiation. Controversial results between the in vivo studies are mostly due to the differences in the route of administration, dose, dosage and carrier type. Local delivery of Simvastatin through controlled drug delivery systems with much lower doses and dosages than the systemic route seems to be the most valuable option in fracture healing. However, systemic delivery of Simvastatin with much higher doses and dosages than the clinical ones seems to be effective in managing osteoporosis. Simvastatin, in a particular range of doses and dosages, may be beneficial in managing osteoporosis and fracture injuries. This review showed that Simvastatin is effective in the treatment of osteoporosis and fracture healing.
    MeSH terms: Animals; Cell Differentiation/drug effects; Humans; Osteoclasts/drug effects; Osteogenesis/drug effects; Osteoporosis/drug therapy*; Fracture Healing/drug effects*; Simvastatin/pharmacology*; Simvastatin/therapeutic use*; Fractures, Bone/drug therapy
  8. Loh LC, Rashid A, Sholehah S, Gnatiuc L, Patel JH, Burney P
    Respirology, 2016 Aug;21(6):1055-61.
    PMID: 27061596 DOI: 10.1111/resp.12793
    BACKGROUND AND OBJECTIVE: As a Burden of Obstructive Lung Disease (BOLD) collaboration, we studied the prevalence of chronic obstructive pulmonary disease (COPD) and its associated risk factors in a suburban population in Malaysia.

    METHODS: Nonhospitalized men or women of age ≥ 40 years from a Penang district were recruited by stratified simple random sampling. Participants completed detailed questionnaires on respiratory symptoms and exposure to COPD risk factors. Prebronchodilator and post-bronchodilator spirometry conducted was standardized across all international BOLD sites in device and data quality control.

    RESULTS: Of the 1218 individuals recruited for the study, 663 (340 men and 323 women) had complete questionnaire data and acceptable post-bronchodilator spirometry. The estimated population prevalence of Global Initiative for Chronic Obstructive Lung Disease (GOLD) ≥ stage I was 6.5% or 3.4% based on either fixed forced expiratory volume in 1 s/forced vital capacity ratio of <0.7 or National Health and Nutritional Examination Survey-derived lower limit of normal ratio while the prevalence of GOLD ≥ stage II was either 4.6% or 3.1%, respectively. Multivariate logistic regression analysis showed independent association between all stages of COPD with cigarette smoking pack years (adjusted odds ratio per 10-year increase: 1.73; 95% confidence interval: 1.09-2.75), use of biomass fuel for cooking (1.61; 1.10-2.36) and exposure to dusty job (1.50; 1.09-2.06).

    CONCLUSION: This study represented the first robust population-based epidemiology data on COPD for Malaysia. Compared with other sites globally, our estimated population prevalence was relatively low. In addition to cigarette smoking, use of biomass fuel and exposure to dusty job represented significant risk to the development of COPD.
    MeSH terms: Adult; Aged; Female; Humans; Malaysia; Malaysia/epidemiology; Male; Middle Aged; Risk Factors; Severity of Illness Index; Spirometry/methods; Spirometry/statistics & numerical data; Suburban Population/statistics & numerical data; Prevalence; Pulmonary Disease, Chronic Obstructive*
  9. Adira Wan Khalit WN, Tay KS
    Environ Sci Process Impacts, 2016 May 18;18(5):555-61.
    PMID: 27062128 DOI: 10.1039/c6em00017g
    Mefenamic acid (Mfe) is one of the most frequently detected nonsteroidal anti-inflammatory drugs in the environment. This study investigated the kinetics and the transformation by-products of Mfe during aqueous chlorination. The potential ecotoxicity of the transformation by-products was also evaluated. In the kinetic study, the second-order rate constant (kapp) for the reaction between Mfe and free available chlorine (FAC) was determined at 25 ± 0.1 °C. The result indicated that the degradation of Mfe by FAC is highly pH-dependent. When the pH was increased from 6 to 8, it was found that the kapp for the reaction between Mfe and FAC was decreased from 16.44 to 4.4 M(-1) s(-1). Characterization of the transformation by-products formed during the chlorination of Mfe was carried out using liquid chromatography-quadrupole time-of-flight accurate mass spectrometry. Four major transformation by-products were identified. These transformation by-products were mainly formed through hydroxylation, chlorination and oxidation reactions. Ecotoxicity assessment revealed that transformation by-products, particularly monohydroxylated Mfe which is more toxic than Mfe, can be formed during aqueous chlorination.
    MeSH terms: Anti-Inflammatory Agents, Non-Steroidal/chemistry*; Chlorine/chemistry*; Chromatography, Liquid; Kinetics; Mefenamic Acid/chemistry*; Water Pollutants, Chemical/chemistry*; Hazardous Substances/chemistry*; Water Purification/methods*; Halogenation*
  10. Wan-Ibrahim WI, Ashrafzadeh A, Singh VA, Hashim OH, Abdul-Rahman PS
    Electrophoresis, 2016 09;37(17-18):2328-37.
    PMID: 27062367 DOI: 10.1002/elps.201500522
    Sarcoma is a malignant tumor that originates from the bone or soft tissue. In this study, abundances of serum amyloid A (SAA) in patients with pleomorphic sarcoma (PS), chondrosarcoma (CS), and osteosarcoma (OS) were analyzed and compared with those from their respective age-matched healthy control subjects. Results obtained from our analysis by 2DE showed that the levels of SAA were markedly elevated in patients with PS and OS, which are highly metastatic, while in patients with CS, which is a less aggressive sarcoma, the increase appeared less pronounced. A similar trend of altered abundances was also observed when the levels of SAA in the subjects were estimated using Western blot, ELISA, and multiple-reaction monitoring analyses. Absolute quantification using multiple-reaction monitoring further demonstrated that the increased abundance of SAA in patients with PS, OS, and CS was mainly attributed to isoform SAA1. In view of the different degrees of tumor malignancy in PS, OS, and CS, our data suggest their apparent correlation with the levels of SAA in the patients.
    MeSH terms: Adult; Aged; Amino Acid Sequence; Serum Amyloid A Protein/metabolism*; Serum Amyloid A Protein/chemistry; Bone Neoplasms/blood; Bone Neoplasms/pathology*; Chondrosarcoma/blood; Chondrosarcoma/pathology*; Enzyme-Linked Immunosorbent Assay; Female; Humans; Male; Middle Aged; Osteosarcoma/blood; Osteosarcoma/pathology*; Mass Spectrometry; Blotting, Western; Electrophoresis, Gel, Two-Dimensional; Case-Control Studies
  11. Kardia E, Halim NSSA, Yahaya BH
    Methods Mol Biol, 2016;1516:243-255.
    PMID: 27062596 DOI: 10.1007/7651_2016_327
    Aerosol-based cell delivery technique via intratracheal is an effective route for delivering transplant cells directly into the lungs. An aerosol device known as the MicroSprayer(®) Aerosolizer is invented to transform liquid into an aerosol form, which then can be applied via intratracheal administration for drug delivery. The device produces a uniform and concentrated distribution of aerosolized liquid. Using the capability of MicroSprayer(®) Aerosolizer to transform liquid into aerosol form, our group has designed a novel method of cell delivery using an aerosol-based technique. We have successfully delivered skin-derived fibroblast cells and airway epithelial cells into the airway of a rabbit with minimum risk of cell loss and have uniformly distributed the cells into the airway. This chapter illustrates the application of aerosol device to deliver any type of cells for future treatment of lung diseases.
    MeSH terms: Administration, Inhalation; Aerosols/therapeutic use; Animals; Epithelial Cells/drug effects*; Humans; Lung/drug effects*; Lung/pathology; Lung Diseases/pathology; Lung Diseases/therapy*; Nebulizers and Vaporizers; Rabbits; Cell- and Tissue-Based Therapy/methods*
  12. Lo TL, Warden M, He Y, Si T, Kalyanasundaram S, Thirunavukarasu M, et al.
    Asia Pac Psychiatry, 2016 Jun;8(2):154-71.
    PMID: 27062665 DOI: 10.1111/appy.12234
    Providing optimal care to patients with recent-onset psychosis can improve outcomes and reduce relapse. However, there is a lack of consistency of the implementation of guidelines for such patients across the Asia-Pacific region. We determined a pragmatic set of recommendations for use on a day-to-day basis to help provide optimal care at this crucial stage of illness. The recommendations were developed over a series of meetings by an international faculty of 15 experts from the Asia-Pacific region, Europe, and South Africa. A structured search of the PubMed database was conducted. This was further developed based on the faculty's clinical experience and knowledge of the literature into 10 key aspects of optimal care for patients during the first five years of a diagnosis of a psychotic disorder, with particular relevance to the Asia-Pacific region. Several common principles emerged: adherence to antipsychotic medications is crucial; substance abuse, psychiatric and medical comorbidities should be addressed; psychosocial interventions play a pivotal role; and family members can play a vital role in overall patient care. By following these recommendations, clinicians may improve outcomes for patients with recent-onset psychosis.
    MeSH terms: Asia, Southeastern; Far East; Humans; Psychotic Disorders/therapy*; Practice Guidelines as Topic*; Oceania
  13. Mansur SA, Mieczkowska A, Flatt PR, Bouvard B, Chappard D, Irwin N, et al.
    Bone, 2016 06;87:102-13.
    PMID: 27062994 DOI: 10.1016/j.bone.2016.04.001
    Obesity and type 2 diabetes mellitus (T2DM) progress worldwide with detrimental effects on several physiological systems including bone tissue mainly by affecting bone quality. Several gut hormones analogues have been proven potent in ameliorating bone quality. In the present study, we used the leptin receptor-deficient db/db mice as a model of obesity and severe T2DM to assess the extent of bone quality alterations at the organ and tissue levels. We also examined the beneficial effects of gut hormone therapy in this model by using a new triple agonist ([d-Ala(2)]GIP-Oxm) active at the GIP, GLP-1 and glucagon receptors. As expected, db/db mice presented with dramatic alterations of bone strength at the organ level associated with deterioration of trabecular and cortical microarchitectures and an augmentation in osteoclast numbers. At the tissue level, these animals presented also with alterations of bone strength (reduced hardness, indentation modulus and dissipated energy) with modifications of tissue mineral distribution, collagen glycation and collagen maturity. The use of [d-Ala(2)]GIP-Oxm considerably improved bone strength at the organ level with modest effects on trabecular microarchitecture. At the tissue level, [d-Ala(2)]GIP-Oxm ameliorated bone strength reductions with positive effects on collagen glycation and collagen maturity. This study provides support for including gut hormone analogues as possible new therapeutic strategies for improving bone quality in bone complications associated to T2DM.
    MeSH terms: Amino Acid Sequence; Animals; Body Composition/drug effects; Bone and Bones/drug effects; Bone and Bones/pathology*; Bone and Bones/physiopathology*; Densitometry; Diabetes Mellitus, Experimental/drug therapy*; Diabetes Mellitus, Experimental/pathology; Diabetes Mellitus, Experimental/physiopathology; Diabetes Mellitus, Type 2/drug therapy*; Diabetes Mellitus, Type 2/genetics*; Diabetes Mellitus, Type 2/pathology; Gastric Inhibitory Polypeptide/pharmacology; Gastric Inhibitory Polypeptide/therapeutic use*; Gastric Inhibitory Polypeptide/chemistry; Male; Osteogenesis/drug effects; Absorptiometry, Photon; Bone Density/drug effects; Inheritance Patterns/genetics*; Mice; Oxyntomodulin/pharmacology; Oxyntomodulin/therapeutic use*; Oxyntomodulin/chemistry; Cortical Bone/drug effects; Cortical Bone/pathology; Cortical Bone/physiopathology; Cancellous Bone/drug effects; Cancellous Bone/pathology; Cancellous Bone/physiopathology
  14. Warrier S, Marimuthu R, Sekhar S, Bhuvanalakshmi G, Arfuso F, Das AK, et al.
    Int J Biochem Cell Biol, 2016 06;75:104-11.
    PMID: 27063405 DOI: 10.1016/j.biocel.2016.04.002
    The extracellular ligand, Wnt, and its receptors are involved in sign al transduction and play an important role in axis formation and neural development. In neurodegenerative disorders such as Alzheimer's disease (AD), a decrease of the intracellular Wnt effector, β-catenin, has been linked to amyloid-β-peptide-induced neurotoxicity. Despite this knowledge, targeting Wnt inhibitors as potential biomarkers has not been explored, and harnessing Wnt activators as therapeutic candidates remains largely not investigated. A wide acting family of Wnt mediators, secreted frizzled-related proteins (sFRPs), has not been probed so far as molecular indicators of disease occurrence and progression of Alzheimer's. Unlike the effect of the Dickkopf (DKK) family of Wnt antagonists on AD, the sFRP molecules have a more pleiotropic impact on the Wnt signaling cascade and probably have a far-reaching involvement in neurodegeneration. The role of sFRPs has been poorly described in AD, and in this review, we analyze the present status of the role of sFRPs on neurodegeneration, their likely involvement, and potential implications in treatment modalities of AD. This information would provide valuable clues for the development of potential therapeutic targets for aberrant neurodegenerative disorders.
    MeSH terms: Alzheimer Disease/drug therapy*; Alzheimer Disease/metabolism*; Animals; Glycoproteins/metabolism*; Humans; Disease Progression; Wnt Proteins/metabolism*; Molecular Targeted Therapy/methods*; Wnt Signaling Pathway/drug effects
  15. Joginder Singh S, Chan MY, Ahmad Rusli Y
    Int J Speech Lang Pathol, 2016 12;18(6):560-570.
    PMID: 27063683
    PURPOSE: Children with speech and language delay/disorder (SLD) in the developing language stage (DLS) are one of the largest populations served by speech-language pathologists (SLPs) working in paediatric settings. The aim of this study was to investigate the practise patterns adopted by Malaysian SLPs when managing these children.

    METHOD: A web-based questionnaire was developed to obtain information about SLPs' practises during assessment, planning and treatment.

    RESULT: A total of 53 SLPs completed the questionnaire. When assessing the children, participants either always or usually involved parents, suggesting that they understood the importance of family involvement in services provided. When planning goals, the SLPs relied mostly on their clinical experience and less on research evidence. Participants reported that, most often, they employed a one-to-one approach when providing treatment. There was, however, great variation in the frequency of treatment provided, reflecting the different workplaces of participants.

    CONCLUSION: Generally, findings from this study indicated that some practises employed by Malaysian SLPs when managing children with SLD in the DLS are on par with the best practise guidelines, but there is still room for improvement in certain areas such as team collaboration and evidence-based practise. Clinical and research implications are discussed.

    MeSH terms: Child; Cross-Sectional Studies; Female; Humans; Language Development Disorders/therapy*; Malaysia; Male; Practice Patterns, Physicians'/statistics & numerical data*; Surveys and Questionnaires; Speech-Language Pathology/methods; Speech-Language Pathology/standards*
  16. Khor CC, Do T, Jia H, Nakano M, George R, Abu-Amero K, et al.
    Nat Genet, 2016 May;48(5):556-62.
    PMID: 27064256 DOI: 10.1038/ng.3540
    Primary angle closure glaucoma (PACG) is a major cause of blindness worldwide. We conducted a genome-wide association study (GWAS) followed by replication in a combined total of 10,503 PACG cases and 29,567 controls drawn from 24 countries across Asia, Australia, Europe, North America, and South America. We observed significant evidence of disease association at five new genetic loci upon meta-analysis of all patient collections. These loci are at EPDR1 rs3816415 (odds ratio (OR) = 1.24, P = 5.94 × 10(-15)), CHAT rs1258267 (OR = 1.22, P = 2.85 × 10(-16)), GLIS3 rs736893 (OR = 1.18, P = 1.43 × 10(-14)), FERMT2 rs7494379 (OR = 1.14, P = 3.43 × 10(-11)), and DPM2-FAM102A rs3739821 (OR = 1.15, P = 8.32 × 10(-12)). We also confirmed significant association at three previously described loci (P < 5 × 10(-8) for each sentinel SNP at PLEKHA7, COL11A1, and PCMTD1-ST18), providing new insights into the biology of PACG.
    MeSH terms: Cell Line; Chromosome Mapping; Female; Genotype; Humans; Male; Glaucoma, Angle-Closure/genetics*; Gene Expression; Genetic Predisposition to Disease*; Genome-Wide Association Study*; Genetic Loci
  17. Paungmali A, Henry LJ, Sitilertpisan P, Pirunsan U, Uthaikhup S
    J Phys Ther Sci, 2016 Jan;28(2):635-40.
    PMID: 27064327 DOI: 10.1589/jpts.28.635
    [Purpose] This study investigated the effects of lumbopelvic stabilization training on tissue blood flow changes in the lumbopelvic region and lumbopelvic stability compared to placebo treatment and controlled intervention among patients with chronic non-specific low back pain. [Subjects and Methods] A total of 25 participants (7 males, 18 females; mean age, 33.3 ± 14.4 years) participated in this within-subject, repeated-measures, double-blind, placebo-controlled comparison trial. The participants randomly underwent three types of interventions that included lumbopelvic stabilization training, placebo treatment, and controlled intervention with 48 hours between sessions. Lumbopelvic stability and tissue blood flow were measured using a pressure biofeedback device and a laser Doppler flow meter before and after the interventions. [Results] The repeated-measures analysis of variance results demonstrated a significant increase in tissue blood flow over the lumbopelvic region tissues for post- versus pre-lumbopelvic stabilization training and compared to placebo and control interventions. A significant increase in lumbopelvic stability before and after lumbopelvic stabilization training was noted, as well as upon comparison to placebo and control interventions. [Conclusion] The current study supports an increase in tissue blood flow in the lumbopelvic region and improved lumbopelvic stability after core training among patients with chronic non-specific low back pain.
  18. Rambli A, Abuzaid AH, Mohamed IB, Hussin AG
    PLoS One, 2016;11(4):e0153074.
    PMID: 27064566 DOI: 10.1371/journal.pone.0153074
    A number of circular regression models have been proposed in the literature. In recent years, there is a strong interest shown on the subject of outlier detection in circular regression. An outlier detection procedure can be developed by defining a new statistic in terms of the circular residuals. In this paper, we propose a new measure which transforms the circular residuals into linear measures using a trigonometric function. We then employ the row deletion approach to identify observations that affect the measure the most, a candidate of outlier. The corresponding cut-off points and the performance of the detection procedure when applied on Down and Mardia's model are studied via simulations. For illustration, we apply the procedure on circadian data.
    MeSH terms: Electric Power Supplies; Publications; Research
  19. Abdullateef BN, Elias NF, Mohamed H, Zaidan AA, Zaidan BB
    Springerplus, 2016;5:248.
    PMID: 27064567 DOI: 10.1186/s40064-016-1828-y
    The evaluation and selection of inappropriate open source software in learning management system (OSS-LMS) packages adversely affect the business processes and functions of an organization. Thus, comprehensive insights into the evaluation and selection of OSS-LMS packages are presented in this paper on the basis of three directions. First, available OSS-LMSs are ascertained from published papers. Second, the criteria for evaluating OSS-LMS packages are specified.according to two aspects: the criteria are identified and established, followed by a crossover between them to highlight the gaps between the evaluation criteria for OSS-LMS packages and the selection problems. Third, the abilities of selection methods that appear fit to solve the problems of OSS-LMS packages based on the multi-criteria evaluation and selection problem are discussed to select the best OSS-LMS packages. Results indicate the following: (1) a list of active OSS-LMS packages; (2) the gaps on the evaluation criteria used for LMS and other problems (consisting of main groups with sub-criteria); (3) use of multi-attribute or multi-criteria decision-making (MADM/MCDM) techniques in the framework of the evaluation and selection of the OSS in education as recommended solutions.
  20. Noroozi M, Zakaria A, Radiman S, Abdul Wahab Z
    PLoS One, 2016;11(4):e0152699.
    PMID: 27064575 DOI: 10.1371/journal.pone.0152699
    In this paper, we report how few layers graphene that can be produced in large quantity with low defect ratio from exfoliation of graphite by using a high intensity probe sonication in water containing liquid hand soap and PVP. It was founded that the graphene powder obtained by this simple exfoliation method after the heat treatment had an excellent exfoliation into a single or layered graphene sheets. The UV-visible spectroscopy, FESEM, TEM, X-ray powder diffraction and Raman spectroscopy was used to analyse the graphene product. The thermal diffusivity of the samples was analysed using a highly accurate thermal-wave cavity photothermal technique. The data obtained showed excellent enhancement in the thermal diffusivity of the graphene dispersion. This well-dispersed graphene was then used to fabricate an electrically conductive polymer-graphene film composite. The results demonstrated that this low cost and environmental friendly technique allowed to the production of high quality layered graphene sheets, improved the thermal and electrical properties. This may find use in the wide range of applications based on graphene.
    MeSH terms: Electric Conductivity; Graphite/chemical synthesis; Graphite/chemistry*; Microscopy, Electron, Scanning/methods; Povidone/chemistry; Powders/chemistry; Soaps/chemistry; Sonication; Spectrophotometry, Ultraviolet; Spectrum Analysis, Raman; Ultrasonics/methods*; Water/chemistry; X-Ray Diffraction; Microscopy, Electron, Transmission; Thermal Diffusion*
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