Displaying publications 61 - 80 of 1065 in total

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  1. Wong YP, Masir N, Sharifah NA
    Malays J Med Sci, 2015 Jan-Feb;22(1):84-8.
    PMID: 25892955 MyJurnal
    Pilomatricomas can be confidently diagnosed cytologically due to their characteristic cytomorphological features. However, these lesions are rarely encountered by cytopathologists and thus pose a diagnostic dilemma to even experienced individuals, especially when the lesions are focally sampled. We describe two cases of histologically confirmed pilomatricoma. The first case is of a 13-year-old boy with posterior cervical 'lymphadenopathy', and the second one is of a 12-year-old girl with a lower cheek swelling. Both aspirates comprised predominantly atypical basal-like cells, with prominent nucleoli. 'Ghost cells' were readily identified by cell block in case two, but cell block in case one yielded no diagnostic material. In case two, pilomatricoma was accurately diagnosed pre-operatively. A cytological suspicion of a neoplastic process was raised in case one. Despite being diagnostically challenging, pilomatricoma can be diagnosed with careful observation of two unique cytological features of the lesions: (1) pathognomonic 'ghost cells' and (2) irregular, saw-toothed, loosely cohesive basaloid cells, with prominent nucleoli. The role of thorough sampling of the lesion, with multiple passes of various sites, cannot be overemphasized.
  2. Wong SL, Ibrahim ZA
    Malays J Med Sci, 2010 Jan;17(1):52-5.
    PMID: 22135527 MyJurnal
    Laryngeal amyloidosis is a rare cause of stridor in a healthy young adult. We report a case of localised laryngeal amyloidosis, including our MRI findings, which included a necrotic centre that has not previously been described. This case also highlights the need for a high index of clinical suspicion to achieve the correct histopathological interpretation.
  3. Wong SL, Law HL, Tan S
    Malays J Med Sci, 2010 Jul;17(3):61-3.
    PMID: 22135551
    A 6 year-old girl presented with a midline parietal scalp swelling that had been gradually enlarging since birth. Magnetic resonance imaging revealed communication of the cyst with the subarachnoid space through a calvarial defect, with concomitant findings of vertically positioned straight venous sinus and subependymal grey matter heterotopia. A diagnosis of atretic cephalocele was thus made based on these classical imaging findings.
  4. Wong SL, Abdul Hamid H
    Malays J Med Sci, 2010 Apr;17(2):4-9.
    PMID: 22135531
    This study observed the widest ureteric diameter in negative intravenous urogram (IVU) examinations using low osmolar contrast media.
  5. Wong HJ, Harith S, Lua PL, Ibrahim KA
    Malays J Med Sci, 2020 Jul;27(4):72-84.
    PMID: 32863747 MyJurnal DOI: 10.21315/mjms2020.27.4.7
    Background: The present study examined the prevalence and predictors of malnutrition risk among post-stroke patients.

    Methods: Post-stroke patients who attended the outpatient clinics in three hospitals of Peninsular Malaysia were enrolled in the study. The risk of malnutrition was assessed using the Malnutrition Risk Screening Tool-Hospital. Data including demographic characteristics, clinical profiles, dietary nutrients intake, body mass index (BMI) and hand grip strength were collected during the survey. The crude odds ratio (OR) and adjusted odds ratio (AOR) were reported for univariate and multivariate logistic regression analyses, respectively.

    Results: Among 398 patients included in the study, 40% were classified as high-risk for malnutrition. In the multivariable logistic regression, tube feeding (AOR: 13.16, 95% confidence interval [CI]: 3.22-53.77), loss of appetite (AOR: 8.15, 95% CI: 4.71-14.12), unemployment (AOR: 4.26, 95% CI: 1.64-11.12), wheelchair-bound (AOR: 2.23, 95% CI: 1.22-4.09) and BMI (AOR: 0.87, 95% CI: 0.82-0.93) were found to be significant predictors of malnutrition risk among stroke patients.

    Conclusion: The risk of malnutrition is highly prevalent among post-stroke patients. Routine nutritional screening, identification of risk factors, and continuous monitoring of dietary intake and nutritional status are highly recommended even after the stroke patient is discharged.

  6. Win TT, Yusuf Y, Jaafar H
    Malays J Med Sci, 2013 Mar;20(2):10-6.
    PMID: 23983572 MyJurnal
    Many studies on the role of apoptosis in cancer development and management have been undertaken. Apoptotic activity depends partly on the balance between anti-apoptotic (Bcl-2) and pro-apoptotic (Bax) activities. This study compared Bcl-2 and Bax expression in the tumour cells and endothelial cells of tumour blood vessels in soft tissue sarcoma, and examined the association of these with tumour characteristics.
  7. Wee YC, Tan KL, Chua KH, George E, Tan JA
    Malays J Med Sci, 2009 Jul;16(3):21-8.
    PMID: 22589661 MyJurnal
    BACKGROUND: The interaction of the non-deletional α(+)-thalassaemia mutations Haemoglobin Constant Spring and Haemoglobin Quong Sze with the Southeast Asian double α-globin gene deletion results in non-deletional Haemoglobin H disease. Accurate detection of non-deletional Haemoglobin H disease, which is associated with severe phenotypes, is necessary as these mutations have been confirmed in the Malaysian population.
    METHODS: DNA from two families with Haemoglobin H disease was extracted from EDTA-anticoagulated whole blood and subjected to molecular analysis for α-thalassaemia. A duplex polymerase chain reaction was used to detect the Southeast Asian α-globin gene deletion. Polymerase chain reaction-restriction fragment length polymorphism analysis was then carried out to determine the presence of Haemoglobin Constant Spring and Haemoglobin Quong Sze. A combine-amplification refractory mutation system protocol was optimised and implemented for the rapid and specific molecular characterisation of Haemoglobin Constant Spring and Haemoglobin Quong Sze in a single polymerase chain reaction.
    RESULTS AND CONCLUSIONS: The combine-amplification refractory mutation system for Haemoglobin Constant Spring and Haemoglobin Quong Sze, together with the duplex polymerase chain reaction, provides accurate pre- and postnatal diagnosis of non-deletional Haemoglobin H disease and allows detailed genotype analyses using minimal quantities of DNA.
    KEYWORDS: Combine-ARMS; Hb Constant Spring; Hb Quong Sze; medical sciences
  8. Wanandi SI, Syahrani RA, Arumsari S, Wideani G, Hardiany NS
    Malays J Med Sci, 2019 Sep;26(5):38-52.
    PMID: 31728117 DOI: 10.21315/mjms2019.26.5.4
    Background: It has been widely reported that breast cancer aggressiveness may be driven by breast cancer stem cells (BCSCs). BCSCs display stemness properties that include self-renewal, tumourigenicity and pluripotency. The regulation of gene expression may have important roles in BCSC stemness and aggressiveness. Thus, the aim of this study was to examine the stemness and aggressiveness gene expression profile of BCSCs compared to MCF-7 and MDA-MB-231 breast cancer cells.

    Methods: Human ALDH1+ BCSCs were grown in serum-free Dulbecco's Modified Eagle Medium (DMEM)/F12, while MCF-7 and MDA-MB-231 were cultured in DMEM supplemented with 10% foetal bovine serum under standard conditions. Total RNA was extracted using the Tripure Isolation Reagent. The relative mRNA expressions of OCT4, ALDH1A1 and CD44 associated with stemness as well as TGF-β1, TβR1, ERα1 and MnSOD associated with aggressiveness in BCSCs and MCF-7 cells were determined using the quantitative real-time PCR (qRT-PCR).

    Results: The mRNA expressions of OCT4 (5.19-fold ± 0.338; P = 0.001), ALDH1A1 (3.67-fold ± 0.523; P = 0.006), CD44 (2.65-fold ± 0.307; P = 0.006), TGF-β1 (22.89-fold ± 6.840; P = 0.015), TβR1 (3.74-fold ± 1.446; P = 0.045) and MnSOD (4.6-fold ± 1.096; P = 0.014) were higher in BCSCs than in MCF-7 but were almost similar to MDA-MB-231 cells. In contrast, the ERα1 expression of BCSCs (0.97-fold ± 0.080; P = 0.392) was similar to MCF-7 cells, indicating that BSCSs are oestrogen-dependent breast cancer cells.

    Conclusion: The oestrogen-dependent BCSCs express stemness and aggressiveness genes at a higher level compared to oestrogen-dependent MCF-7 but are almost similar to oestrogen-independent MDA-MB-231 cells.

  9. Wanandi SI, Ningsih SS, Asikin H, Hosea R, Neolaka GMG
    Malays J Med Sci, 2018 May;25(3):7-16.
    PMID: 30899183 DOI: 10.21315/mjms2018.25.3.2
    The growth of tumour cells is closely related to cancer-associated fibroblasts (CAFs) present within their microenvironment. CAFs, the most abundant cells in tumour stroma, secrete growth factors that play pivotal roles in tumour cell proliferation, metabolism, angiogenesis and metastasis. Tumour cells adapt to rapid environmental changes from normoxia to hypoxia through metabolic interplay with CAFs. In this mini review, we discuss the role of lactate dehydrogenases (LDHs) and monocarboxylate transporters (MCTs) on the metabolic interplay between tumour cells and CAFs under hypoxia compared to normoxia. The LDHs catalyse the interchange of lactate and pyruvate, whereas MCTs facilitate the influx and efflux of monocarboxylates, especially lactate and pyruvate. To sum up, tumour cells switch their metabolic state between glycolysis and oxidative phosphorylation through metabolic interplay with CAFs, which exhibit the Warburg effect under hypoxia and reverse Warburg effect under normoxia.
  10. Wan Omar A, Sulaiman O, Yusof S, Ismail G, Fatmah MS, Rahmah N, et al.
    Malays J Med Sci, 2001 Jul;8(2):19-24.
    PMID: 22893756
    We have recently reported that a dipstick colloidal dye immunoassay (DIA) that detect parasite antigens in human serum is sensitive and specific for the diagnosis of active infection of lymphatic filariasis. Rabbit polyclonal antibodies (RbBmCAg) labelled with a commercial dye, palanil navy blue was used to detect filarial antigenemia among Indonesian and Bangladeshi immigrant workers (N= 630) at oil palm estates at Hulu Trengganu District, Peninsular Malaysia. Microfilaremia with Brugia malayi were detected in 51 (8.10 %) individuals, of which 42 (6.67 %) were among the Indonesians and 9 (1.98 %) among the Bangladeshis. Microfilaremia with Wuchereria bancrofti were detected in 33 (5.24 %) individuals of which 15 (2.38 %) were among the Indonesians and 18 (2.86 %) among the Bangladeshis workers. The DIA detected 96 (15.24 %) antigenemic cases which comprise of all the microfilaremic cases and 15 (2.38 %) amicrofilaremic cases. The amicrofilaremic cases with filarial antigenemia consisted of 9 (1. 43 %) Indonesians and 6 (0.95%) Bangladeshis. We have used 6 ul of the RbBmCAg and diluted (1:10) patients' sera per dipstick which make the DIA reagent conservative. The DIA is a rapid test and can be read in approximate 2 hours.. Additionally, coloured dots developed in the DIA can be qualitatively assessed visually for intensity. The DIA does not require sophisticated equipment or radioactivity, and therefore suitable for field application.
  11. Wan Nur Aimi WMZ, Noorazliyana S, Tuan Salwani TI, Adlin Zafrulan Z, Najib Majdi Y, Noor Azlin Azraini CS
    Malays J Med Sci, 2021 Oct;28(5):64-71.
    PMID: 35115888 DOI: 10.21315/mjms2021.28.5.6
    Background: In end-stage renal disease (ESRD), troponin T concentrations can be elevated even without cardiac ischaemia, which hampers the diagnosis of acute myocardial infarction (AMI). The objectives of our study were to determine the proportion of dialysisdependent ESRD patients without acute coronary syndrome (ACS) but with highly sensitive cardiac troponin T (hs-cTnT) levels above the 99th percentile upper reference limit and to evaluate the range of hs-cTnT among this population.

    Methods: A cross-sectional study was conducted at the haemodialysis (HD) unit of a tertiary hospital in Malaysia from January 2018 to February 2019. Dialysis-dependent ESRD patients were included and those with a recent history of ACS (within 30 days) were excluded. Pre-dialysed serum hs-cTnT levels were measured using Cobas e411. The upper limit of the 99th percentile value for troponin T was 14 ng/L.

    Results: A total of 150 patients were recruited as study participants. The majority were female (62%) and of Malay ethnicity (94%), and the mean (SD) age was 45.19 (16.36) years old. The hs-cTnT range (min, max) was 11.39-738.30 ng/L and the median (interquartile range [IQR]) of hs-cTnT was 59.20 (83.41) ng/L. Elevated hs-cTnT levels were observed in 149/150 (99%) of the study participants (54/55 [98.2%] of the patients were on HD, and 95/95 [100.0%] of the patients were on continuous ambulatory peritoneal dialysis).

    Conclusion: This study supports prior research showing that even without ACS, most ESRD patients have elevated concentrations of cardiac troponin. Furthermore, our study illustrates the need to revisit the use of absolute troponin values when making a diagnosis of ACS in ESRD patients.

  12. Wan Nudri WD, Wan Abdul Manan WM, Mohamed Rusli A
    Malays J Med Sci, 2009 Apr;16(2):21-6.
    PMID: 22589654 MyJurnal
    A cross-sectional study was carried out in Kota Bharu on three groups of men with ages ranging from 18 to 44 years. The study groups included 83 athletes representing various types of sports and levels of participation (athlete group), 80 active men who exercised a minimum of 30 minutes per day at least 3 times per week (exercise group), and 80 inactive men (sedentary group). The objectives of the study were to compare the body mass indices (BMIs) and body fat statuses among the three groups with different physical activity levels. The height and weight of respondents were measured using the Seca weighing balance with height attachment. Skinfold thickness of biceps, triceps, subscapular regions, and suprailiac regions of each respondent were measured using Harpenden skinfold calipers. Percentage body fat was calculated as the sum of the four measurements of skinfold thickness. The results showed that the mean (± SD) BMIs in the athlete, exercise, and sedentary groups were 22.6 ± 2.9, 23.4 ± 3.5, and 24.3 ± 4.6 kg/m(2), respectively. The combined prevalence of pre-obese (BMI 25.029.9) and obese (BMI ³ 30.0) subjects was 21.7% in the athlete group, 29.9% in the exercise group, and 47.5% in the sedentary group. The mean (± SD) percentage of body fat in athletes was 15.7 ± 5.4%, which was lower than in the exercise (18.9 ± 5.5%) and sedentary (20.6 ± 5.8%) groups. The study revealed that individuals who are actively involved in physical activity, particularly in sport activities, have lower BMIs and percentage body fat values compared to sedentary people. Therefore, to prevent obesity, all individuals are encouraged to perform regular physical activity, particularly sports activities.
  13. Wan Mohd Zain WN, Rahmat A, Othman F, Yap TY
    Malays J Med Sci, 2009 Jul;16(3):29-34.
    PMID: 22589662 MyJurnal
    CLAUSINE B, A CARBAZOLE ALKALOID ISOLATED FROM THE STEM BARK OF CLAUSENA EXCAVATA, WAS INVESTIGATED FOR ITS ANTIPROLIFERATIVE ACTIVITIES AGAINST FIVE HUMAN CANCER CELL LINES: HepG2 (hepatic cancer), MCF-7 (hormone-dependent breast cancer), MDA-MB-231 (non-hormone-dependent breast cancer), HeLa (cervical cancer), and CAOV3 (ovarian cancer).
  14. Wan Mohamed WN, Che Din N, Ibrahim N
    Malays J Med Sci, 2015 Dec;22(Spec Issue):29-35.
    PMID: 27006635
    A cross-sectional study was carried out at a medical centre to determine the cognitive profiles of 30 Parkinson's disease patients with age of 69.76 ± 7.39 years. Thirty-seven percent of the patients were found to be at risk for dementia. The scores on subscales of working memory and alternating verbal fluency were significantly lower in Parkinson's disease patients who were older than 77 years old. The scores on a subtest of working memory on the Parkinson's Disease Cognitive Rating Scale (PDCRS) were significantly lower in Parkinson's disease patients with a duration of illness of more than 10 years. In cognitive measurement, the subtests of verbal memory, delayed free recall and verbal fluency on the PD¬CRS were significantly lower in patients with less than six years of education. The patients who had difficulty with sustained attention, working memory and movement had significant anxiety and depression symptoms. In conclusion, multiple patterns in cognitive profiles influence the quality of life of patients with Parkinson's disease in multi-dimensional ways.
  15. Wan Mohamed Noor WN, Sandhu SS, Ahmad Mahir HM, Kurup D, Rusli N, Saat Z, et al.
    Malays J Med Sci, 2014 Nov-Dec;21(6):3-8.
    PMID: 25897276 MyJurnal
    The current Ebola outbreak, which is the first to affect West African countries, has been declared to have met the conditions for a Public Health Emergency of International Concern (PHEIC) by the World Health Organization (WHO). Thus, the Ministry of Health (MOH) of Malaysia has taken steps to strengthen and enhanced the five core components of preparedness and response to mitigate the outbreak. The National Crisis Preparedness and Response Centre (CPRC) commands, controls and coordinates the preparedness and response plans for disasters, outbreaks, crises and emergencies (DOCE) related to health in a centralised way. Through standardised case definition and mandatory notification of Ebola by public and private practitioners, surveillance of Ebola is made possible. Government hospitals and laboratories have been identified to manage and diagnose Ebola virus infections, and medical staff members have been trained to handle an Ebola outbreak, with emphasis on strict infection prevention and control practices. Monitoring of the points of entry, focusing on travellers and students visiting or coming from West African countries is made possible by interagency collaborations. To alleviate the public's anxiety, effective risk communications are being delivered through various channels. With experience in past outbreak control, the MOH's preparedness and response plans are in place to abate an Ebola outbreak.
  16. Wan Mohamad Darani WNS, Chen XW, Samsudin EZ, Mohd Nor F, Ismail I
    Malays J Med Sci, 2023 Feb;30(1):172-184.
    PMID: 36875201 DOI: 10.21315/mjms2023.30.1.15
    BACKGROUND: Concerted efforts have been undertaken to reduce the human immunodeficiency virus (HIV) infection by the year 2030 in Malaysia. A situational analysis of the performance of successful HIV treatment and its determinants is vital; however, this information remains scarce. This study aimed to identify the determinants of undetectable viral load among people living with HIV (PLHIV).

    METHODS: Newly diagnosed HIV cases (n = 493) registered under the Malaysia HIV/AIDS-related national databases from June 2018 to December 2019 were studied. The deterministic matching method was applied to link the records in two national databases (at Kuala Lumpur and Putrajaya Federal Territories Health Department, JKWPKLP HIV line-listing database and National AIDS Registry). Successful HIV treatment, an outcome variable, was measured by the undetectable viral load < 200 copies/mL after 1 year of antiretroviral therapy initiation. Logistic regression analysis was applied in the current study.

    RESULTS: Results showed that 454/493 (92.2%; 95% confidence interval [CI]: 89.8%, 94.6%) PLHIV had successful HIV treatment. Study participants had a mean (SD) age of 30 (8.10) years old, predominantly male (96.1%) and sexually transmission (99.9%). The multiple logistic regression analysis revealed two significant determinants including the timing of ART initiation (AOR = 3.94; 95% CI: 1.32, 11.70; P = 0.014) and establishment of Sexually Transmitted Infection Friendly Clinic (STIFC) (AOR = 3.40; 95% CI: 1.47, 7.85; P = 0.004). Non-significant variables included gender, education level, HIV risk exposure, and co-infections of tuberculosis and Hepatitis C.

    CONCLUSION: JKWPKLP is on the right track to achieving universal treatment as a prevention strategy. Reinforcement of early ART initiation and establishment of STIFC are recommended.

  17. Wan Mahmud WM, Awang A, Herman I, Mohamed MN
    Malays J Med Sci, 2004 Jul;11(2):19-25.
    PMID: 22973123
    Increased international collaboration in clinical trials has created a need for cross culturally valid instruments to assess the quality of life and behavioural disorders. Cross cultural studies of depressive symptomatology, in particular, must be preceded by an exhaustive study of the psychometric properties of the instruments to ensure the validity of the comparison. In this article, we examined the validity, reliability and factor structure of the Malay version of the Beck Depression Inventory II (BDI-II) among Malay postpartum women attending selected health centres in Kedah, North West of Peninsular Malaysia. Our findings indicated that the current version of the BDI-II is psychometrically strong and appropriate for use in assessing depressive symptomatology among this group of women.
  18. Wan Mahmud WM, Shariff S, Yaacob MJ
    Malays J Med Sci, 2002 Jan;9(1):41-8.
    PMID: 22969317 MyJurnal
    The aim of this study was to determine the incidence and associated risk factors of postpartum depression among Malay women in Beris Kubor Besar, Bachok, Kelantan The study was conducted between February to August 1998. A two-stage population survey approach was employed. Firstly, all the women who delivered between the months of February and May 1998 in the catchment area were identified. In stage 1, the 30 items GHQ was used as the screening instrument at 6 to 8 weeks postpartum. All the potential cases (scoring above 6 on the questionnaire) were later interviewed using the CIS in stage 2 of the study. Diagnosis of postpartum depression was only made if the women fulfilled required criteria. Of the 174 women who were recruited, 17 of them fulfilled the criteria for postpartum depression yielding an incidence rate of 9.8 %. The condition was found to be significantly linked to low income or socioeconomic status, having marital problems (mainly financial in nature) and not breast - feeding.
  19. Wan Ismail WF
    Malays J Med Sci, 2015 Jul-Aug;22(4):1-5.
    PMID: 26715902
    The management of musculoskeletal tumours has progressed tremendously over the past few decades. Limb salvage surgery has become a standard practise without compromising the oncological outcome. Patients generally will benefit with superior function and a better quality of life compared with definitive amputation. The multidisciplinary approach and advancement of surgeries are important to achieve patient survival and optimum function.
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