1.Broad reactive monoclonal antibodies for rapid identification of enteroviruses show cross-reactivity with chikungunya virus infected cells
Khairul AH ; Chem YK ; Keniscope C ; Rosli J ; Hassan S ; Mat Jais MS ; Chua KB
The Malaysian Journal of Pathology 2010;32(1):49-52
In the past decade, enterovirus 71 (EV71) and chikungunya (CHIK) virus have re-emerged periodically
causing serious public health problems in Malaysia, since their first emergence in 1997 and 1998
respectively. This study demonstrates that CHIK virus causes similar patterns of cytopathic effect
in cultured Vero cells as some enteroviruses. They also show positive cross-reaction on direct
immunofl uorescence staining using monoclonal antibodies meant for typing enteroviruses. Without
adequate clinical and epidemiological information for correlation, CHIK virus isolated from patients
with acute febrile rash can be wrongly reported as untypeable enterovirus due to its cross-reactivity
with commercial pan-enterovirus monoclonal antibodies. This is due to the diagnostic laboratory being
unaware of such cross-reactions as it has not been reported previously. Final identifi cation of the
virus could be determined with specific antibodies or molecular typing using specifi c oligonucleotide
primers for the CHIK virus.
2.Modified Unipolar Hemiarthroplasty for the Treatment of Metastatic Lesions of Proximal Femur with Pathological Fractures: Case Series of Six Patients
Lim CY ; Mat-Hassan S ; Awang M ; MD-Ariff MF ; HauAbdullah MA
Malaysian Orthopaedic Journal 2019;13(3):21-27
Introduction: Proximal femur resection and endoprosthetic reconstruction is the preferred treatment for extensive bony destruction and pathological fractures. Due to the relatively high cost of endoprosthesis, we adopted the modified unipolar hemiarthroplasty (MUH) for reconstruction when the mode of treatment was for palliation. Materials and Methods:This is a retrospective case study of six patients, who had bone and multi-organs metastases with extensive proximal femur involvement with pathologic fractures who underwent resection and MUH reconstruction during the period 2013 to 2017. All patients were classified as Group B / C based on Scandinavian Sarcoma Group survival scoring, with estimated survival of maximum six months. The basic MUH construct consisted of AustinMoore prosthesis which was secured to a Küntscher nail using cerclage wire and cemented into the femoral canal. Subsequently, the whole length of the prosthesis which remained outside the canal was coated with cement. Results:The mean age was 61.8 years. The mean survival was 3.9 months, post-operation. There was no implant failure during patients’ life span; however, a third of the patients developed infection. Wheel chair ambulation was started immediately post-operation for all patients, and two patients progressed to walking frame ambulation. The total cost of each construct was below US$490 in comparison to long-stem hemiarthroplasty (roughly US$ 1700). Conclusion: Our aim was to alleviate pain, facilitate rehabilitation, ease nursing care and improve quality of life for metastatic bone disease patients until end of life. MUH for the treatment of pathological fracture in proximal femoral metastases is a feasible palliative surgical modality in resource-limited settings.
3.Nutritional Status and Health-Related Quality of Life among Knee and Hip Osteoarthritis Patients under Rehabilitation Care in Kuala Nerus, Terengganu, Malaysia
Zamri NAA ; Harith S ; Mat-Hassan N ; Ong YQ
Malaysian Orthopaedic Journal 2021;15(No.2):77-88
Introduction: The World Health Organisation (WHO) has
estimated that 80% of people with osteoarthritis (OA) have
movement limitations while 25% of them cannot perform
their major daily activities, thus resulting in a decline of their
nutritional status and quality of life (QOL). Therefore, this
study aimed to compare the nutritional status and healthrelated quality of life (HRQOL) of OA patients between
gender and age group.
Material and methods: A cross-sectional study was
conducted on 131 OA patients in Rehabilitation Health
Organisation, Terengganu. Socio-demographic, clinical,
lifestyle histories, 24-hour dietary intake and HRQOL were
assessed using a structured questionnaire.
Results: Knee and/or hip OA patients recruited consisted of
19.1% of men and 80.9 % of women collectively with a
mean age of 61.81 (9.28) years ranging from 38 to 83 years.
The percentages of underweight, normal, overweight, and
obese patients were 1.5%, 12.2%, 36.7%, and 49.6%,
respectively. Further assessment of HRQOL showed that the
highest mean score was obtained by the social functioning
(SF) domain of 41.25 (27.16), while the mental domain
scored the least mean score of 21.15 (20.92). In terms of
gender breakdown, the males had significantly greater
weight and height but lower body fat (BF) compared to their
female counterparts, as well as a significantly higher energy,
carbohydrate and protein intake. According to the age group,
patients aged < 60 years had significantly greater weight,
height, and BF than those aged ≥ 60 years.
Conclusion: This study is an important baseline reference
for proper OA management and prevention by providing
crucial nutritional status and HRQOL information.
5.Synthesis, characterization, anti-mycobacterial activity and in silico study of new 2,5-disubstituted-1,3,4-oxadiazole derivatives
Azmi, M.N. ; Hasmaruddin, N.S. ; Mat Ali, N.A. ; Osman, H. ; Mohamad, S. ; Parumasivam, T. ; Hassan, M.Z. ; Abd Ghani, M.S. ; Awang, K.
Tropical Biomedicine 2022;39(No.3):467-475
A series of new 2,5-disubstituted-1,3,4-oxadiazole derivatives (5a-j and 6a-j) have been designed and
synthesized in four-steps. Sixteen compounds among the twenty compounds are reported for the first
time. The compounds were characterized and confirmed by the FTIR, 1D- and 2D-NMR and HRMS
analyses, and were tested against Mycobacterium smegmatis and Mycobacterium tuberculosis H37Ra.
Compound 5d was the most active against M. smegmatis with MIC value of 25 µM, and exhibited
cidal activity with MBC of 68 µM, respectively. The time-kill assay showed the good killing rate at 77%
with the combination of isoniazid (INH). In addition, checkboard assay confirmed the interaction of
compound 5d was categorised as additive. Docking simulation has been performed to position 5d into
the pantothenate synthetase active site with binding free energy value –8.6 kcal mol-1. It also occupied
the same active site as that of standard native ligand with similar interactions, which clearly indicate
their potential as pantothenate synthetase inhibitor.