Browse publications by year: 2010

  1. Bastion ML
    BMJ Case Rep, 2010;2010.
    PMID: 22242074 DOI: 10.1136/bcr.10.2009.2398
    The use of 0.5 mg/0.05 ml of ranibizumab intracamerally, to induce regression of iris neovascularisation in a non-diabetic patient, is reported. A 55-year-old Malay man presented with left eye rubeosis and hyphaema secondary to ischaemic remnant retinal flap in his silicone filled pseudophakic eye. Regression of rubeosis and resolution of hyphaema was noted within 4 days of injection of intracameral ranibizumab, allowing repeat vitrectomy to be performed without much bleeding, thus facilitating removal of his intraocular lens and laser to remaining flap. One month postoperatively he remained comfortable with counting fingers vision similar to the pre-hyphaema period.
    MeSH terms: Ranibizumab; Hemorrhage; Humans; Hyphema; Iris; Lenses, Intraocular; Malaysia; Male; Middle Aged; Retina; Silicones; Vitrectomy
  2. Kadirgama K, Noor MM, Abd Alla AN
    Sensors (Basel), 2010;10(3):2054-63.
    PMID: 22294914 DOI: 10.3390/s100302054
    Metal cutting processes are important due to increased consumer demands for quality metal cutting related products (more precise tolerances and better product surface roughness) that has driven the metal cutting industry to continuously improve quality control of metal cutting processes. This paper presents optimum surface roughness by using milling mould aluminium alloys (AA6061-T6) with Response Ant Colony Optimization (RACO). The approach is based on Response Surface Method (RSM) and Ant Colony Optimization (ACO). The main objectives to find the optimized parameters and the most dominant variables (cutting speed, feedrate, axial depth and radial depth). The first order model indicates that the feedrate is the most significant factor affecting surface roughness.
    MeSH terms: Algorithms*; Alloys/chemistry; Aluminum/chemistry; Analysis of Variance; Equipment Design/methods*; Models, Theoretical*; Surface Properties; Reproducibility of Results
  3. Hidayat W, Shakaff AY, Ahmad MN, Adom AH
    Sensors (Basel), 2010;10(5):4675-85.
    PMID: 22399899 DOI: 10.3390/s100504675
    Presently, the quality assurance of agarwood oil is performed by sensory panels which has significant drawbacks in terms of objectivity and repeatability. In this paper, it is shown how an electronic nose (e-nose) may be successfully utilised for the classification of agarwood oil. Hierarchical Cluster Analysis (HCA) and Principal Component Analysis (PCA), were used to classify different types of oil. The HCA produced a dendrogram showing the separation of e-nose data into three different groups of oils. The PCA scatter plot revealed a distinct separation between the three groups. An Artificial Neural Network (ANN) was used for a better prediction of unknown samples.
    MeSH terms: Algorithms; Odors/analysis; Plant Oils/analysis*; Cluster Analysis; Neural Networks (Computer); Principal Component Analysis; Thymelaeaceae/chemistry*; Electronic Nose*
  4. Abadi MH, Hamidon MN, Shaari AH, Abdullah N, Misron N, Wagiran R
    Sensors (Basel), 2010;10(5):5074-89.
    PMID: 22399925 DOI: 10.3390/s100505074
    Microstructural, topology, inner morphology, and gas-sensitivity of mixed xWO(3)(1-x)Y(2)O(3) nanoparticles (x = 1, 0.95, 0.9, 0.85, 0.8) thick-film semiconductor gas sensors were studied. The surface topography and inner morphological properties of the mixed powder and sensing film were characterized with X-ray diffraction (XRD), atomic force microscopy (AFM), transmission electron microscopy (TEM), and scanning electron microscopy (SEM). Also, gas sensitivity properties of the printed films were evaluated in the presence of methane (CH(4)) and butane (C(4)H(10)) at up to 500 °C operating temperature of the sensor. The results show that the doping agent can modify some structural properties and gas sensitivity of the mixed powder.
    MeSH terms: Butanes; Doping in Sports; Methane; Microscopy, Electron, Scanning; Semiconductors; Temperature; X-Ray Diffraction; Microscopy, Atomic Force; Microscopy, Electron, Transmission; Nanoparticles
  5. Hee LW, Singh VA, Jayalakshmi P
    BMJ Case Rep, 2010;2010.
    PMID: 22400059 DOI: 10.1136/bcr.09.2009.2266
    Gout is a disease where an abnormal collection of uric crystals (gouty tophi) can often be found in the foot and ankle. Occasionally such tophies are found at unusual sites and this can pose a challenge to the clinician where diagnosis and treatment is concerned. We describe a patient who presented to our oncology department with a swelling on his right thigh which was clinically diagnosed to be a soft tissue sarcoma, but after further investigations it turned out to be a gouty tophi. The purpose of this case report is to emphasise the variable presentation of gout and the challenges that can be faced by clinicians in diagnosing a soft tissue swelling.
    MeSH terms: Gout; Hospitals, University; Humans; Malaysia
  6. Mohamad SB, Ong AL, Khairuddin RF, Ripen AM
    In Silico Biol. (Gedrukt), 2010;10(3):145-53.
    PMID: 22430288 DOI: 10.3233/ISB-2010-0423
    Laccases are industrially attractive enzymes and their applications have expanded to the field of bioremediation. The challenge of today's biotechnology in enzymatic studies is to design enzymes that not only have a higher activity but are also more stable and could fit well with the condition requirements. Laccases are known to oxidize non-natural substrates like polycyclic aromatic hydrocarbons (PAHs). We suppose by increasing the hydrophobicity of laccase, it would increase the chance of the enzyme to meet the hydrophobic substrates in a contamination site, therefore increasing the bioremediation efficacy of PAHs from environment. In this attempt, the applications of evolutionary trace (ET), molecular surface accessibility and hydrophobicity analysis on laccase sequences and laccase's crystal structure (1KYA) are described for optimal design of an enzyme with higher hydrophobicity. Our analysis revealed that Q23A, Q45I, N141A, Q237V, N262L, N301V, N331A, Q360L and Q482A could be promising exchanges to be tested in mutagenesis experiments.
    MeSH terms: Amino Acid Sequence; Biodegradation, Environmental; Computer Simulation; Fungal Proteins/genetics; Fungal Proteins/chemistry*; Models, Molecular; Molecular Sequence Data; Phylogeny; Polycyclic Hydrocarbons, Aromatic/chemistry; Surface Properties; Protein Engineering; Sequence Homology, Amino Acid; Protein Structure, Tertiary; Evolution, Molecular; Amino Acid Substitution; Laccase/genetics; Laccase/chemistry*; Trametes/enzymology; Hydrophobic and Hydrophilic Interactions
  7. Mahmod M, Nor IF, Maskon O
    BMJ Case Rep, 2010;2010.
    PMID: 22448190 DOI: 10.1136/bcr.02.2009.1549
    While selective non-steroidal anti-inflammatory drugs, namely cyclo-oxygenase-2 (COX 2) inhibitors, are known to be associated with acute myocardial infarction, little is known about the cardiovascular safety of the non-selective non-steroidal anti-inflammatory drugs. We report the case of a 44-year-old man who developed anaphylactic reaction and acute inferior myocardial infarction following ingestion of a non-selective anti-inflammatory drug, diclofenac sodium. Coronary angiography revealed a large thrombus in the right coronary artery which was partially removed by intracoronary catheter aspiration. Complete resolution of the remaining thrombus was achieved after treatment with an oral anticoagulant.
    MeSH terms: Adult; Anaphylaxis; Anti-Inflammatory Agents; Anti-Inflammatory Agents, Non-Steroidal; Anticoagulants; Coronary Vessels; Diclofenac; Humans; Male; Myocardial Infarction; Thrombosis; Cyclooxygenase Inhibitors; Coronary Angiography; Cyclooxygenase 2; Inferior Wall Myocardial Infarction
  8. Reddy SC, Anusya S
    Int J Ophthalmol, 2010;3(1):64-8.
    PMID: 22553520 DOI: 10.3980/j.issn.2222-3959.2010.01.15
    To analyze the demography, presenting clinical features, spread of the disease of retinoblastoma in patients who were treated in two tertiary hospitals in Malaysia.
  9. Muslikhan Y, Hitam WH, Ishak SR, Mohtar I, Takaran J
    Int J Ophthalmol, 2010;3(1):92-4.
    PMID: 22553527 DOI: 10.3980/j.issn.2222-3959.2010.01.22
    To report a case of cryptococcus meningitis in an immunocompetent teenager that presented early with diplopia and bilateral poor vision.
  10. Lee KF, Muhd Nor NI, Yaakub A, Wan Hitam WH
    Int J Ophthalmol, 2010;3(2):175-8.
    PMID: 22553547 DOI: 10.3980/j.issn.2222-3959.2010.02.20
    To evaluate the clinical presentations of traumatic optic neuropathy and to assess the visual outcome of three groups of patients managed differently (conservative, intravenous corticosteroids only and combination of intravenous and oral corticosteroids) at an academic tertiary care referral centre.
  11. Choo M, Prakash K, Samsudin A, Soong T, Ramli N, Kadir A
    Int J Ophthalmol, 2010;3(3):234-6.
    PMID: 22553561 DOI: 10.3980/j.issn.2222-3959.2010.03.12
    To compare corneal endothelial structure and central corneal thickness (CCT) between type II diabetics and non-diabetic control patients. To look for correlations between diabetic status and corneal findings.
  12. Ismaeel OM, Jaafar H, Ibrahim M
    Int J Ophthalmol, 2010;3(3):245-8.
    PMID: 22553564 DOI: 10.3980/j.issn.2222-3959.2010.03.15
    To detect the presence of 8-hydroxydeoxyguanosine enzyme (8-OHdG) in recurrent pterygium and its role on recurrence.
  13. Ulagantheran V, Ahmad Fauzi MS, Reddy SC
    Int J Ophthalmol, 2010;3(3):272-6.
    PMID: 22553571 DOI: 10.3980/j.issn.2222-3959.2010.03.22
    To determine the causes, associated ocular findings and visual acuity on presentation, complications and visual outcome following treatment in patients of hyphema due to blunt injury
  14. Reddy SC, Mohan SM
    Int J Ophthalmol, 2010;3(4):326-7.
    PMID: 22553584 DOI: 10.3980/j.issn.2222-3959.2010.04.11
    To determine the asymmetry in the sympathetic activity in the eyes as indicated by intraocular pressure (IOP).
  15. Pan SW, Yusof NS, Hitam WH, Noor RA, Embong Z
    Int J Ophthalmol, 2010;3(4):361-4.
    PMID: 22553594 DOI: 10.3980/j.issn.2222-3959.2010.04.21
    AIM: To evaluate the clinical manifestations and visual outcome of syphilitic uveitis patients.

    METHODS: Case series of three patients with syphilitic uveitis who were managed in Hospital USM.

    RESULTS: Three patients were diagnosed to have uveitis secondary to Syphilis. All three patients were not known to have syphilis prior to presentation but have positive history of sexual promiscuity. All patients presented with progressive blurring of vision for average of one-month duration. Two of them have association with fever, ocular pain and floaters. Visual acuity at presentation ranges from 6/12 to hand movement. Mild anterior uveitis (non-granulomatous), vitritis and papillitis were presence in all the patients. First patient has multifocal chorioretinitis with exudative retinal detachment. The second patient presented with exudative retinal detachment while the third patient has chorioretinitis only. All the patients were treated with intramuscular benzyl-penicillin 2.4 MU weekly for 4 weeks and two of them received oral doxycycline 200mg twice daily for 3 months. The uveitis responded well to the treatment and two of them showed dramatic visual improvement from 6/120 to 6/21 and 6/12 to 6/6. The one with worse outcome was confirmed to have positive retroviral.

    CONCLUSION: Ocular syphilis presented here as non-granulomatous inflammation associated with exudative retinal detachment. Final visual outcome is generally good despite slow improvement after treatment.

  16. Bastion ML
    BMJ Case Rep, 2010;2010.
    PMID: 22736756 DOI: 10.1136/bcr.11.2009.2488
    This report describes the rapid progress of a case of unilateral acute retinal necrosis (ARN) that led to formation of a macular hole rhegmatogenous retinal detachment with advanced proliferative vitreo-retinopathy (PVR) changes over the space of 2 weeks. This necessitated primary vitrectomy with circumferential scleral buckle placement, which facilitated reattachment of the retina.
    MeSH terms: Adult; Female; Humans; Retinal Detachment/etiology*; Retinal Detachment/surgery*; Retinal Perforations/etiology*; Retinal Perforations/surgery*; Scleral Buckling; Vitrectomy/methods*; Retinal Necrosis Syndrome, Acute/complications*; Retinal Necrosis Syndrome, Acute/surgery*; Disease Progression
  17. Bastion ML, Zahidin AZ
    BMJ Case Rep, 2010;2010.
    PMID: 22750927 DOI: 10.1136/bcr.11.2009.2497
    An unusual case of disciform keratitis developing in a patient with silicone oil-filled eye following vitrectomies for posterior globe rupture.
    MeSH terms: Aged; Diagnosis, Differential; Endothelium/virology; Humans; Male; Silicone Oils/administration & dosage*; Vitrectomy/methods*; Keratitis, Herpetic/diagnosis*
  18. Ngiu CS, Said MS, Periyasamy P, Low SF
    BMJ Case Rep, 2010;2010.
    PMID: 22778377 DOI: 10.1136/bcr.11.2009.2421
    Rituximab is a B-cell-depleting monoclonal anti-CD20 antibody. It is widely used in haematology and rheumatology. However, usage of rituximab in immunosupressed patient has been associated with various opportunistic infections. The authors reported a case of refractory rheumatoid arthritis treated with rituximab, which later presented with non-resolving pneumonia with pulmonary nodule. Percutaneous computer tomogram guided lung biopsy was arranged to confirm the suspicion of tuberculosis, but did not yield conclusive results. Later, she presented left-chest abscess and underwent incision and drainage. The pus culture and sensitivity confirmed pulmonary nocardiosis with chest wall dissemination. She was treated with 2-week course of trimethoprim sulfamethoxazole and responded. The authors also reviewed published cases of nocardiosis post-rituximab.
    MeSH terms: Rituximab; Anti-Bacterial Agents/therapeutic use; Arthritis, Rheumatoid/complications*; Arthritis, Rheumatoid/drug therapy; Diagnosis, Differential; Female; Humans; Middle Aged; Nocardia Infections/diagnosis; Nocardia Infections/drug therapy; Nocardia Infections/etiology*; Trimethoprim, Sulfamethoxazole Drug Combination/therapeutic use; Pneumonia, Bacterial/diagnosis; Pneumonia, Bacterial/drug therapy; Pneumonia, Bacterial/etiology*; Antirheumatic Agents/adverse effects; Antirheumatic Agents/therapeutic use*; Antibodies, Monoclonal, Murine-Derived/adverse effects; Antibodies, Monoclonal, Murine-Derived/therapeutic use*
  19. Bastion ML
    BMJ Case Rep, 2010;2010.
    PMID: 22791576 DOI: 10.1136/bcr.03.2010.2867
    To describe an unusual case of vitreomacular traction syndrome spontaneously resolving prior to elective pars planar vitrectomy demonstrated on optical coherence tomography.
    MeSH terms: Diabetic Retinopathy/complications*; Female; Humans; Macula Lutea/pathology*; Middle Aged; Remission, Spontaneous; Syndrome; Vitrectomy*; Elective Surgical Procedures*; Vitreous Detachment/complications; Vitreous Detachment/diagnosis*; Tomography, Optical Coherence*
  20. Hasmoni MH, Shah AS, Ayoub S, Hin LS, Abd Rashid MA
    BMJ Case Rep, 2010;2010.
    PMID: 22791841 DOI: 10.1136/bcr.06.2010.3120
    MeSH terms: Chronic Disease; Histoplasmosis/complications; Histoplasmosis/diagnosis*; Humans; Tongue Diseases/microbiology*; Tongue Diseases/pathology; Ulcer/microbiology*; Ulcer/pathology; Diabetes Complications/complications; Diabetes Complications/diagnosis*; Diabetes Complications/microbiology
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