Displaying publications 1 - 20 of 635 in total

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  1. Tsai HJ, Liou B, Li MC
    Malays J Pathol, 2013 Dec;35(2):177-80.
    PMID: 24362481
    Basaloid squamous cell carcinoma (BSCC) of the uterine cervix is a rare malignancy of the female genital tract with a poorer clinical outcome than SCC of the uterine cervix. We report a case of BSCC of the uterine cervix developing rapidly in a young adult Taiwanese. A 35-year-old woman, Para 2, visited the emergency room with severe dizziness, palpitations and sudden excessive vaginal bleeding with hemoglobin of 3.6 g/dl. She had been well and healthy but intermittent vaginal spotting developed for around 6 months previously and was treated as abnormal uterine bleeding by ob-gyn practitioners. She had a repeat cesarean operation 16 months prior to this episode and the last Pap smear showed reactive change 12 months ago at our hospital. On examination, she had an ulcerated, necrotic, and punched-out lesion of 5 cm of the cervix. A cervical biopsy revealed poorly differentiated typical BSCC. Abdominal/pelvic computerized tomography and whole body positron emission tomography confirmed FIGO staging IB2. She responded well to concurrent chemoradiotherapy. Follow-up for the patient is ongoing. This is a rapid developing BSCC of the uterine cervix, although we cannot actually ascertain when it started and how rapidly it progressed.
  2. Sharma S, Manchanda V, Gupta R
    Malays J Pathol, 2013 Dec;35(2):181-3.
    PMID: 24362482
    Testicular microlithiasis (TM) is a rare benign condition with presence of multiple small microcalcifications in the seminiferous tubules. Though the aetiology is unknown, TM has been described in association with a variety of urological conditions. We report the clinico-pathological features of a 12-year-old male child who underwent orchidectomy for undescended testis. Histopathological examination of the excised testis showed multiple small intratubular calcifications without any evidence of testicular neoplasia. TM is an unusual phenomenon that should be kept in mind while evaluating testicular biopsies. Though it behaves in a benign manner in most of the cases, patients with positive family history of testicular cancer should be followed-up for testicular tumour.
  3. Kapitonova MY, Salim N, Othman S, Muhd Kamauzaman TM, Ali AM, Nawawi HM, et al.
    Malays J Pathol, 2013 Dec;35(2):153-63.
    PMID: 24362479 MyJurnal
    Experiments involving short-term space flight have shown an adverse effect on the physiology, morphology and functions of cells investigated. The causes for this effect on cells are: microgravity, temperature fluctuations, mechanical stress, hypergravity, nutrient restriction and others. However, the extent to which these adverse effects can be repaired by short-term space flown cells when recultured in conditions of normal gravity remains unclear. Therefore this study aimed to investigate the effect of short-term spaceflight on cytoskeleton distribution and recovery of cell functions of normal human osteoblast cells. The ultrastructure was evaluated using ESEM. Fluorescent staining was done using Hoechst, Mito Tracker CMXRos and Tubulin Tracker Green for cytoskeleton. Gene expression of cell functions was quantified using qPCR. As a result, recovered cells did not show any apoptotic markers when compared with control. Tubulin volume density (p<0.001) was decreased significantly when compared to control, while mitochondria volume density was insignificantly elevated. Gene expression for IL-6 (p<0.05) and sVCAM-1 (p<0.001) was significantly decreased while alkaline phosphatase (p<0.001), osteocalcin and sICAM (p<0.05) were significantly increased in the recovered cells compared to the control ones. The changes in gene and protein expression of collagen 1A, osteonectin, osteoprotegerin and beta-actin, caused by short-term spaceflight, were statistically not significant. These data indicate that short term space flight causes morphological changes in osteoblast cells which are consistent with hypertrophy, reduced cell differentiation and increased release of monocyte attracting proteins. The long-term effect of these changes on bone density and remodeling requires more detailed studies.
  4. Muid S, Froemming GR, Ali AM, Nawawi H
    Malays J Pathol, 2013 Dec;35(2):165-76.
    PMID: 24362480 MyJurnal
    The effects of spaceflight on cardiovascular health are not necessarily seen immediately after astronauts have returned but can be delayed. It is important to investigate the long term effects of spaceflight on protein and gene expression of inflammation and endothelial activation as a predictor for the development of atherosclerosis and potential cardiovascular problems. The objectives of this study were to investigate the (a) protein and gene expression of inflammation and endothelial activation, (b) expression of nuclear factor kappa B (NFκB), signal transducer and activator of transcription-3 (STAT-3) and endothelial nitric oxide synthase (eNOS) in human umbilical vein endothelial cells (HUVEC) 3 months post-space flight travel compared to ground controls. HUVEC cultured on microcarriers in fluid processing apparatus were flown to the International Space Station (ISS) by the Soyuz TMA-11 rocket. After landing, the cells were detached from microcarriers and recultured in T-25 cm(2) culture flasks (Revived HUVEC). Soluble protein expression of IL-6, TNF-α, ICAM-1, VCAM-1 and e-selectin were measured by ELISA. Gene expression of these markers and in addition NFκB, STAT-3 and eNOS were measured. Spaceflight induced IL-6 and ICAM-1 remain elevated even after 3 months post spaceflight travel and this is mediated via STAT-3 pathway. The downregulation of eNOS expression in revived HUVEC cells suggests a reduced protection of the cells and the surrounding vessels against future insults that may lead to atherosclerosis. It would be crucial to explore preventive measures, in relation to atherosclerosis and its related complications.
  5. Ching YM, Arip M, Jegasothy R, Baskaran TP, Yusof AY, Bakhtiar F, et al.
    Malays J Pathol, 2013 Dec;35(2):147-51.
    PMID: 24362478 MyJurnal
    The presence of antiphospholipid antibodies (aPLs) is closely associated with thrombotic events and pregnancy complications such as recurrent pregnancy loss, preeclampsia and placental insufficiency. We investigated the presence of aPLs and its frequency among female patients with a history of fetal loss in a Malaysia population. Serum samples were collected from 108 patients who had (1) one or more unexplained deaths of morphologically normal fetuses at or beyond the 22nd week of gestation, or (2) one or more premature births of morphologically normal neonates at or before the 24th week of gestation due to eclampsia or preeclampsia, or recognized features of placental insufficiency, or (3) three or more unexplained, consecutive, spontaneous miscarriages before the 20th week of gestation. Serum was tested for aPLs subtypes: anticardiolipin (aCL), anti-beta-2- glycoprotein I (aβ2GPI), anti-beta-2-glycoprotein I dependent cardiolipin (aβ2GPI dependent CL), anti-phosphatidylcholine (aPC), anti-phosphatidylethanolamine (aPE), anti-phosphatidylinositol (aPI), anti-phosphatidylserine (aPS) and anti-sphingomyeline (aSph) by using the enzyme-linked immunosorbent assay (ELISA) method. The mean age of patients was 30±5. Four patients (3.7%) were found positive for at least one aPLs subtype. Four aPLs subtypes were detected. The most common subtypes was aβ2GPI dependent CL (3.7%), followed by aCL (2.7%), aβ2GPI (0.9%), and aPE(0.9%). In conclusion, frequency of aPLs among women with fetal loss (3.7%) in Malaysia was low with subtype aβ2GPI dependent CL being the most prevalent aPLs.
  6. Elbashier SH, Nazarina AR, Looi LM
    Malays J Pathol, 2013 Dec;35(2):139-45.
    PMID: 24362477
    Ewing sarcoma (ES)/ primitive neuroectodermal tumour (PNET) is an aggressive malignant neoplasm affecting mainly children and young adults. The tumour is included with other primitive neoplasms under the category of small round cell tumour. Cytokeratin expression in ES/PNET has been described in sporadic case reports as well as a few systemic series. We studied this feature in Malaysian patients diagnosed in University Malaya Medical Centre on the basis of typical morphology and immunohistochemical assays. Immunohistochemical staining for AE1/AE3 and MNF116 were performed in 43 cases. Cytokeratin was expressed in 17 cases (39.5%) in focal, intermediate or diffuse patterns. There was no significant association between cytokeratin immunoreactivity and the following parameters: patient age, sex, skeletal and extraskeletal primary location as well as primary, metastastic or recurrent tumours or chemotherapy treatment. A significant association between cytokeratin and neuron specific enolase (NSE) expression was demonstrated. Our study supports evidence of epithelial differentiation in ES/PNET and emphasizes that the expression of cytokeratin does not exclude ES/PNET in the differential diagnosis of small round cell tumours.
  7. Thayaparan S, Robertson ID, Fairuz A, Suut L, Abdullah MT
    Malays J Pathol, 2013 Dec;35(2):123-32.
    PMID: 24362475 MyJurnal
    Leptospirosis is an endemic disease in Malaysia and recently has received increasing attention mainly due to several recent incidents that have resulted in human mortality which have alarmed health professionals in Malaysia. The increasing incidence of leptospirosis in forested regions is associated with the bacteria infecting small wild mammals other than rats. Infection in wildlife could result in the introduction of new serovars to humans and domesticated animals. More research on leptospirosis and the screening of wildlife and humans near wildlife habitats is required to have a better understanding of the involvement of wildlife in the disease.
  8. Kamaluddin M, Shariff NS, Nurfarliza S, Othman A, Ismail KH, Mat Saat GA
    Malays J Pathol, 2014 Apr;36(1):41-50.
    PMID: 24763234 MyJurnal
    Murder is the most notorious crime that violates religious, social and cultural norms. Examining the types and number of different killing methods that used are pivotal in a murder case. However, the psychological traits underlying specific and multiple killing methods are still understudied. The present study attempts to fill this gap in knowledge by identifying the underlying psychological traits of different killing methods among Malaysian murderers. The study adapted an observational cross-sectional methodology using a guided self-administered questionnaire for data collection. The sampling frame consisted of 71 Malaysian male murderers from 11 Malaysian prisons who were selected using purposive sampling method. The participants were also asked to provide the types and number of different killing methods used to kill their respective victims. An independent sample t-test was performed to establish the mean score difference of psychological traits between the murderers who used single and multiple types of killing methods. Kruskal-Wallis tests were carried out to ascertain the psychological trait differences between specific types of killing methods. The results suggest that specific psychological traits underlie the type and number of different killing methods used during murder. The majority (88.7%) of murderers used a single method of killing. Multiple methods of killing was evident in 'premeditated' murder compared to 'passion' murder, and revenge was a common motive. Examples of multiple methods are combinations of stabbing and strangulation or slashing and physical force. An exception was premeditated murder committed with shooting, when it was usually a single method, attributed to the high lethality of firearms. Shooting was also notable when the motive was financial gain or related to drug dealing. Murderers who used multiple killing methods were more aggressive and sadistic than those who used a single killing method. Those who used multiple methods or slashing also displayed a higher level of minimisation traits. Despite its limitations, this study has provided some light on the underlying psychological traits of different killing methods which is useful in the field of criminology.
  9. Azma RZ, Ainoon O, Hafiza A, Azlin I, Noor Farisah AR, Nor Hidayati S, et al.
    Malays J Pathol, 2014 Apr;36(1):27-32.
    PMID: 24763232 MyJurnal
    Alpha (Α) thalassaemia is the most common inherited disorder in Malaysia. The clinical severity is dependant on the number of Α genes involved. Full blood count (FBC) and haemoglobin (Hb) analysis using either gel electrophoresis, high performance liquid chromatography (HPLC) or capillary zone electrophoresis (CE) are unable to detect definitively alpha thalassaemia carriers. Definitive diagnosis of Α-thalassaemias requires molecular analysis and methods of detecting both common deletional and non-deletional molecular abnormailities are easily performed in any laboratory involved in molecular diagnostics. We carried out a retrospective analysis of 1623 cases referred to our laboratory in Universiti Kebangsaan Malaysia Medical Centre (UKMMC) for the diagnosis of Α-thalassaemia during the period October 2001 to December 2012. We examined the frequency of different types of alpha gene abnormalities and their haematologic features. Molecular diagnosis was made using a combination of multiplex polymerase reaction (PCR) and real time PCR to detect deletional and non-deletional alpha genes relevant to southeast Asian population. Genetic analysis confirmed the diagnosis of Α-thalassaemias in 736 cases. Majority of the cases were Chinese (53.1%) followed by Malays (44.2%), and Indians (2.7%). The most common gene abnormality was ΑΑ/--(SEA) (64.0%) followed by ΑΑ/-Α(3.7) (19.8%), -Α(3.7) /--(SEA) (6.9%), ΑΑ/ΑΑCS (3.0%), --(SEA)/--(SEA) (1.2%), -Α(3.7)/-Α(3.7) (1.1%), ΑΑ/-Α(4.2) (0.7%), -Α(4.2)/--(SEA (0.7%), -Α(3.7)/-Α(4.2) (0.5%), ΑΑ(CS)/-- SEA) (0.4%), ΑΑ(CS)/ΑΑ(Cd59) (0.4%), ΑΑ(CS)/ΑΑ(CS) (0.4%), -Α(3.7)/ΑΑ(Cd59) (0.3%), ΑΑ/ΑΑ(Cd59) (0.1%), ΑΑ(Cd59)/ ΑΑ(IVS I-1) (0.1%), -Α(3.7)/ΑΑ(CS) (0.1%) and --(SEA) /ΑΑ(Cd59) (0.1%). This data indicates that the molecular abnormalities of Α-thalassaemia in the Malaysian population is heterogenous. Although Α-gene deletion is the most common cause, non-deletional Α-gene abnormalities are not uncommon and at least 3 different mutations exist. Establishment of rapid and easy molecular techniques is important for definitive diagnosis of alpha thalassaemia, an important prerequisite for genetic counselling to prevent its deleterious complications.
  10. Hanita O, Alia NN, Zaleha AM, Nor Azlin MI
    Malays J Pathol, 2014 Apr;36(1):19-26.
    PMID: 24763231 MyJurnal
    Soluble fms-like tyrosine kinase-1 (sFlt-1) and placental growth factor (PlGF) contribute in the development of preeclampsia and are suggested as prediction markers in healthy pregnant women but limited data is available in women with major preeclampsia risk factors. This study aimed to determine the role of sFlt-1 and PlGF in predicting preeclampsia among high risk pregnant women. This was a prospective study and samples were collected for a period of ten months. Blood samples were obtained from 84 pregnant women who had at least one risk factor for preeclampsia at 25 to 28 weeks and at 29 to 36 weeks of gestation. SFlt-1 and PlGF concentrations were determined by immunoassay method. There were significantly higher median sFlt-1 and sFlt-1:PlGF ratio at gestational interval 25 to 28 weeks and sFlt-1:PlGF ratio at 29 to 36 weeks in high risk women who developed preeclampsia. Significant lower median serum PlGF levels at 25 to 28 weeks and 29 to 36 weeks were observed in this group of women. In conclusion, the concentrations of these markers were altered in high risk preeclamptic women, a similar pattern seen in low risk preeclamptic women. However the predictive value of these markers could not be established clearly.
  11. Sulaiman NA, Osman K, Hamzah NH, Amir SP
    Malays J Pathol, 2014 Apr;36(1):33-9.
    PMID: 24763233 MyJurnal
    Deaths due to blunt force trauma to the head as a result of assault are some of the most common cases encountered by the practicing forensic pathologist. Previous studies have shown inflicting injury to the head region is one of the most effective methods of murder. The important factors that determine severity of trauma include the type of weapon used, type and site of skull fracture, intracranial haemorrhage and severity of brain injury. The aim of this study was to determine the characteristics of blunt force trauma to the skull produced by different instruments. Nine adult monkeys (Macaca fascicularis) skulls were used as models. Commonly found blunt objects comprising of Warrington hammer, hockey stick and open face helmet were used in this study. A machine calibrated force generator was used to hold the blunt object in place and to hit the skulls at forces of 12.5N and 25N. Resultant traumatic effects and fractures (linear, depressed, basilar, comminuted, and distastic) were analyzed according to type of blunt object used; surface area of contact and absolute force (N/cm(2)) delivered. Results showed that all investigated instruments were capable of producing similar injuries. The severity of trauma was not related to the surface area of contact with the blunt objects. However, only high absolute forces produced comminuted fractures. These findings were observational, as the samples were too small for statistical conclusions.
  12. Azira NM, Zeehaida M, Nurul Khaiza Y
    Malays J Pathol, 2013 Jun;35(1):65-9.
    PMID: 23817396 MyJurnal
    The human leucocyte antigen (HLA) has been documented to be involved in various disease susceptibilities or in resistance against certain diseases. An important element in susceptibility and resistance to disease is ethnic genetic constitution. Cognizant of this, the present study aimed at studying the prevalence of particular HLA class II in a normal healthy Malay population which may serve as a guide for further genetic and immunological studies related to the Malay Malaysian population. The study involved 40 normal healthy Malay persons in Kelantan. HLA typing was conducted on venous blood samples through a polymerase chain reaction-sequence specific primer method (low resolution Olerup SSP© HLA Typing Kits). The study found HLA DR12 and HLA DQ8 to be the most frequent HLA class II type. HLA DQ5 was significantly associated with female subjects.
  13. Jamaluddin FA, Sthaneshwar P, Hussein Z, Othman N, Chan SP
    Malays J Pathol, 2013 Jun;35(1):59-63.
    PMID: 23817395 MyJurnal
    Prolactin (PRL) exists in different forms in human serum. The predominant form is monomeric PRL (molecular mass 23 kDa) with smaller amounts of big PRL (molecular mass 50-60 kDa) and at times macroprolactin (molecular mass 150-170 kDa). Macroprolactin, generally considered to be biologically inactive, accounts for the major part of prolactin in some patients. Different immunoassays for prolactin differ in reactivity with this macromolecular complex.
  14. Khoo JJ, Gunn A, Peh SC
    Malays J Pathol, 2013 Jun;35(1):45-57.
    PMID: 23817394 MyJurnal
    Malignant transformation from normal colonic mucosa to carcinomas may be accelerated by genetic loss or inactivation of genes of the DNA mismatch repair system. The aim of the study was to determine the local incidence and pattern of immunohistochemical expression of mismatch repair proteins namely: hMLH1, hMSH2 and hMSH6 in a series of colorectal carcinomas (CRCs) and correlate this to their clinical and pathological features. Forty-three out of 298 cases of CRCs (14.4%) showed abnormal staining pattern for mismatch repair proteins with a majority (65.1%) showing single hMLH1 loss. Tumours with mismatch repair defect (MMR-d) were frequently found at the right side of colon (p<0.001), poorly differentiated carcinomas (p<0.001), produced more mucin (p=0.007), exophytic growth (p=0.007) and were bigger (p=0.002) than tumours with no mismatch repair defect. Immunohistochemical stains for mismatch repair proteins could be done in local laboratories on these selected cases before referring for the expensive molecular test.
  15. Ho CC, Mun KS, Naidu R
    Malays J Pathol, 2013 Jun;35(1):33-43.
    PMID: 23817393 MyJurnal
    Breast cancer is the most common malignancy in women worldwide. The incidence of breast cancer in Malaysia is lower compared to international statistics, with peak occurrence in the age group between 50 to 59 years of age and mortality rates of 18.6%. Despite current diagnostic and prognostic methods, the outcome for individual subjects remain poor. This is in part due to breast cancers' wide genetic heterogeneity. Various platforms for genetics studies are now employed to determine the identity of these genetic abnormalities, including microarray methods like high density single-nucleotide-polymorphism (SNP) oligonucleotide arrays which combine the power of chromosomal comparative genomic hybridization (cCGH) and loss of heterozygosity (LOH) in the offering of higher-resolution mappings. These platforms and their applications in highlighting the genomic alteration frameworks manifested in breast carcinoma will be discussed.
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