Displaying publications 21 - 40 of 101 in total

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  1. Fulltext Clinicopathological study of dentigerous cysts in Singapore and Malaysia
    Yeo JF, Rosnah BZ, Ti LS, Zhao YY, Ngeow WC
    Malays J Pathol, 2007 Jun;29(1):41-7.
    PMID: 19105328 MyJurnal
    This was a retrospective study of dentigerous cysts in people from the Singapore-Malaysian region. The purpose of this study was to present the clinicopathologic features of dentigerous cysts in the Oriental population and to compare these data with those from other reported studies. Biopsy records from 1981 to 1993 of 119 cases of dentigerous cysts from patients in Malaysia and Singapore showed that 36.1% of patients were female and 63.9% patients were male. Among patients with cysts, 70.5% were Chinese, 23.2% were Malays, 2.7% were Indian and 3.6% were other ethnic groups. The mean age of these patients was 30.2 +/- 17.3 years with a peak incidence occurring in the second and third decades. The location of the lesions was almost equal to the maxilla (50.9%) and the mandible (49.1%). There was a marked predilection for the posterior mandible (42.7%) followed by the anterior maxilla (38.2%). Histologically, 90.8% of the cysts were lined by a non-keratinised stratified squamous epithelium. The cyst linings were mainly thin (90.0%) with 38.7% of cases having a mixed thick and thin lining. Mucous metaplasia was observed in 9 (7.6%) cases. Rushton bodies were seen in 3.4% of cases. Cholesterol clefts in the epithelial lining and lumen were found in 16.8% cases while 12.6% of cases exhibited cholesterol clefts in the cyst wall. Other cellular structures within the cyst wall were lymphocytes (66.4%), plasma cells (52.1%), Russell bodies (16.0%) and histiocytes (4.2%). Odontogenic keratocysts were observed in 5.0% of cases. One case of adenomatoid odontogenic tumour was also observed. Epithelial atypia was seen in 9.2% of cases, islands of stratified squamous epithelial cells in 8.4% of cases while one case showed a combination of these two features. In conclusion, some clinical features seen in this study are similar to that for the Caucasian population such as prevalence in male, peak incidence in the second and third decades and the predilection for the posterior mandible and anterior maxilla. Histopathologically, odontogenic keratocyst and adenomatoid odontogenic tumour were observed in dentigerous cysts.
    Matched MeSH terms: Age of Onset
  2. Ethnic differences in the time trend of female breast cancer incidence: Singapore, 1968-2002
    Sim X, Ali RA, Wedren S, Goh DL, Tan CS, Reilly M, et al.
    BMC Cancer, 2006;6:261.
    PMID: 17078893
    From 1968 to 2002, Singapore experienced an almost three-fold increase in breast cancer incidence. This increase appeared to be different across the three main ethnic groups: Chinese, Malays and Indians. This paper used age-period-cohort (APC) modelling, to determine the effects of age at diagnosis, calendar period, and birth cohort on breast cancer incidence for each ethnic group.
    Matched MeSH terms: Age of Onset
  3. Fulltext Molecular characterization of two Malaysian patients with Wiskott-Aldrich syndrome
    Baharin MF, Kader Ibrahim SB, Yap SH, Abdul Manaf AM, Mat Ripen A, Dhaliwal JS
    Malays J Pathol, 2015 Aug;37(2):153-8.
    PMID: 26277674 MyJurnal
    The Wiskott-Aldrich Syndrome (WAS) is an X-linked immunodeficiency condition characterized by microthrombocytopenia, eczema and recurrent infections. It is caused by mutations in the Wiskott-Aldrich Syndrome protein (WASP) gene. We investigated two Malay boys who presented with congenital thrombocytopenia, eczema and recurrent infections. Here we report two cases of WASP mutation in Malaysia from two unrelated families. One had a novel missense mutation in exon 1 while the other had a nonsense mutation in exon 2. Both patients succumbed to diseaserelated complications. A differential diagnosis of WAS should be considered in any male child who present with early onset thrombocytopenia, especially when this is associated with eczema and recurrent infections.
    Matched MeSH terms: Age of Onset
  4. Fulltext Association of type and location of BRCA1 and BRCA2 mutations with risk of breast and ovarian cancer
    Rebbeck TR, Mitra N, Wan F, Sinilnikova OM, Healey S, McGuffog L, et al.
    JAMA, 2015 Apr 07;313(13):1347-61.
    PMID: 25849179 DOI: 10.1001/jama.2014.5985
    IMPORTANCE: Limited information about the relationship between specific mutations in BRCA1 or BRCA2 (BRCA1/2) and cancer risk exists.

    OBJECTIVE: To identify mutation-specific cancer risks for carriers of BRCA1/2.

    DESIGN, SETTING, AND PARTICIPANTS: Observational study of women who were ascertained between 1937 and 2011 (median, 1999) and found to carry disease-associated BRCA1 or BRCA2 mutations. The international sample comprised 19,581 carriers of BRCA1 mutations and 11,900 carriers of BRCA2 mutations from 55 centers in 33 countries on 6 continents. We estimated hazard ratios for breast and ovarian cancer based on mutation type, function, and nucleotide position. We also estimated RHR, the ratio of breast vs ovarian cancer hazard ratios. A value of RHR greater than 1 indicated elevated breast cancer risk; a value of RHR less than 1 indicated elevated ovarian cancer risk.

    EXPOSURES: Mutations of BRCA1 or BRCA2.

    MAIN OUTCOMES AND MEASURES: Breast and ovarian cancer risks.

    RESULTS: Among BRCA1 mutation carriers, 9052 women (46%) were diagnosed with breast cancer, 2317 (12%) with ovarian cancer, 1041 (5%) with breast and ovarian cancer, and 7171 (37%) without cancer. Among BRCA2 mutation carriers, 6180 women (52%) were diagnosed with breast cancer, 682 (6%) with ovarian cancer, 272 (2%) with breast and ovarian cancer, and 4766 (40%) without cancer. In BRCA1, we identified 3 breast cancer cluster regions (BCCRs) located at c.179 to c.505 (BCCR1; RHR = 1.46; 95% CI, 1.22-1.74; P = 2 × 10(-6)), c.4328 to c.4945 (BCCR2; RHR = 1.34; 95% CI, 1.01-1.78; P = .04), and c. 5261 to c.5563 (BCCR2', RHR = 1.38; 95% CI, 1.22-1.55; P = 6 × 10(-9)). We also identified an ovarian cancer cluster region (OCCR) from c.1380 to c.4062 (approximately exon 11) with RHR = 0.62 (95% CI, 0.56-0.70; P = 9 × 10(-17)). In BRCA2, we observed multiple BCCRs spanning c.1 to c.596 (BCCR1; RHR = 1.71; 95% CI, 1.06-2.78; P = .03), c.772 to c.1806 (BCCR1'; RHR = 1.63; 95% CI, 1.10-2.40; P = .01), and c.7394 to c.8904 (BCCR2; RHR = 2.31; 95% CI, 1.69-3.16; P = .00002). We also identified 3 OCCRs: the first (OCCR1) spanned c.3249 to c.5681 that was adjacent to c.5946delT (6174delT; RHR = 0.51; 95% CI, 0.44-0.60; P = 6 × 10(-17)). The second OCCR spanned c.6645 to c.7471 (OCCR2; RHR = 0.57; 95% CI, 0.41-0.80; P = .001). Mutations conferring nonsense-mediated decay were associated with differential breast or ovarian cancer risks and an earlier age of breast cancer diagnosis for both BRCA1 and BRCA2 mutation carriers.

    CONCLUSIONS AND RELEVANCE: Breast and ovarian cancer risks varied by type and location of BRCA1/2 mutations. With appropriate validation, these data may have implications for risk assessment and cancer prevention decision making for carriers of BRCA1 and BRCA2 mutations.

    Matched MeSH terms: Age of Onset
  5. Recurrent respiratory papillomatosis
    Long YT, Sani A
    Asian J Surg, 2003 Apr;26(2):112-6.
    PMID: 12732496
    A 6-year-review of patients who presented with recurrent respiratory papillomatosis (RRP) to our hospital from January 1996 to December 2001 was carried out. Ten cases were identified, of which six were juvenile-onset RRP. Hoarseness was the most common symptom, noted in nine (90%) patients. Other clinical presentations included cough, stridor and aphonia. All patients had glottic papillomas; two had multiple sites of involvement. One patient underwent a tracheostomy that revealed papillomas over the trachea, bronchus and lung parenchyma. Half of the patients were Chinese. Of the six cases of juvenile-onset RRP, three patients were Malay, two Chinese and one Indian. Three Chinese and one German patient had adult-onset RRP. Among the juvenile-onset RRP cases, the mean age at presentation was 2 years, while for adult-onset RRP, it was 42 years. Juvenile-onset RRP was more common in females. There were more papillomas over more sites in patients with juvenile-onset RRP than with adult-onset disease. Subglottic involvement was noted in the juvenile-onset RRP cases. All patients were treated with CO2 laser therapy, but there was complete remission of the papillomas in only two cases.
    Matched MeSH terms: Age of Onset
  6. Clinicopathological study of peripheral odontogenic fibromas (WHO-type) in Malaysians (1967-95)
    Siar CH, Ng KH
    Br J Oral Maxillofac Surg, 2000 Feb;38(1):19-22.
    PMID: 10783442
    Analysis of case records of 46 patients with peripheral odontogenic fibroma (1967-95) diagnosed in the Division of Stomatology, Institute for Medical Research, Kuala Lumpur, disclosed a relatively young age of onset (mean, 32.2 years; range 5 months-64 years; peak incidence second decade of life), a slight female preponderance (M:F ratio 1:1.3), no racial predilection, a slight bias towards location in the mandible (52%) and a wide histomorphological range. All cases were treated by simple excision. Follow-up records were generally not available, so we do not know what the recurrence rate is.
    Matched MeSH terms: Age of Onset
  7. Skin prick test reactivity to common aeroallergens in asthmatic patients with and without rhinitis
    Liam CK, Loo KL, Wong CM, Lim KH, Lee TC
    Respirology, 2002 Dec;7(4):345-50.
    PMID: 12421243 DOI: 10.1046/j.1440-1843.2002.00409.x
    OBJECTIVE: The aim of this study was to investigate the prevalence of skin prick test (SPT) reactivity to common aeroallergens among Malaysian asthmatic patients with and without rhinitis.
    METHODOLOGY: An SPT using eight aeroallergens (Dermatophagoides pteronyssinus, Dermatophagoides farinae, cat fur, cockroach, Acacia sp., Bermuda grass, Aspergillus fumigatus and Aspergillus niger) was performed on 206 asthmatic patients.
    RESULTS: One hundred and forty patients (68%) were reactive to at least one of the aeroallergens. Among the SPT-positive patients, a positive prick test reaction to the house dust mites, D. pteronyssinus (93.6%), and D. farinae (81.4%) was most common, followed by cat fur (20.0%), cockroach (7.9%), Bermuda grass (7.9%), Acacia sp. (7.9%), A. fumigatus (0.7%) and A. niger (0.7%). A history of rhinitis was elicited in 111 (53.9%) patients and 95 (85.3%) of these patients were SPT-positive compared with only 45 (47.4%) of 95 patients with asthma symptoms alone (P < 0.001). The presence of rhinitis and a young age of onset of asthma were independent factors for positive SPT reaction to at least one of the aeroallergens.
    CONCLUSIONS: The prevalence of SPT reactivity to common aeroallergens is high among Malaysian asthmatics, particularly in those with an early age of onset and in those with coexisting rhinitis.
    Study site: Asthma Clinic, University of Malaya Medical Centre, Kuala Lumpur, Malaysia
    Matched MeSH terms: Age of Onset
  8. SLE mortality in an oriental population
    Koh ET, Seow A, Leong KH, Chng HH
    Lupus, 1997;6(1):27-31.
    PMID: 9116715 DOI: 10.1177/096120339700600104
    We analysed the causes of 67 deaths, over a 4 y period, in our oriental population with systemic lupus erythematosus (SLE). The median disease duration was 48 +/- 60.5 months (range 1-250 months). The mean age at diagnosis and death were 30 and 35.1 y respectively. SLE alone accounted for death in 30 patients (44.8%), infection in 27 (40.3%), pulmonary embolism in 5 (7.5%), malignancy in 4 (5.9%) and rheumatic heart disease in 1 (1.5%). The major organ involvement in those with active disease at death were SLE related thrombocytopenia (n = 23/44, 52.3%), nephritis (n = 21/44), 47.7%), cerebral lupus (n = 16/44, 36.4%), and pulmonary haemorrhage (n = 12/44, 27.3%). As in other series, SLE and infection were the principal causes of death in our population. During this 4 y period, there was no late death due to atherosclerosis.
    Study site: Tan Tock Seng Hospital (TTSH), Singapore
    Matched MeSH terms: Age of Onset
  9. Atopic eczema in a multiracial country (Malaysia)
    Jaafar RB, Pettit JH
    Clin Exp Dermatol, 1993 Nov;18(6):496-9.
    PMID: 8252784
    A total of 14,342 patients with skin diseases who had attended either the National University of Malaysia skin clinic or a private dermatological office were analysed. Five hundred and thirty-four cases (3.7%) had atopic eczema, the prevalence being highest among the Malays (4.3%). The prevalence of atopic eczema among clinic attenders is lower in all three major Malaysian races when compared with studies from England.
    Matched MeSH terms: Age of Onset
  10. Fulltext Febrile seizures in Malaysian children: epidemiology and clinical features
    Deng CT, Zulkifli HI, Azizi BH
    Med J Malaysia, 1994 Dec;49(4):341-7.
    PMID: 7674969
    A child with a febrile seizure is a common cause of admission in a general paediatric ward in Malaysia. We set out to look prospectively into the clinical and epidemiological features of these children. A total of 117 children were admitted into the study. The ratio of boys to girls were 1.5:1.0. The racial breakdown was 62.4% Malays, 26.5% Indians, 8.5% Chinese and 2.6% others. The first febrile seizure occurred before the age of three years in 92.9% of our patients. The highest number of febrile seizures was in the six to 12 months age group. The average length of seizure was 9.5 minutes and the majority were non-recurrent. Febrile seizures with complex features occurred in 33.3% of the children. Upper respiratory tract infection was the most common cause of fever in our patients. There was a family history of seizures (febrile or afebrile) in 26.5% of patients.
    Matched MeSH terms: Age of Onset
  11. Fulltext Late-onset systemic lupus erythematosus: clinical and immunological characteristics
    Shaikh SK, Wang F
    Med J Malaysia, 1995 Mar;50(1):25-31.
    PMID: 7752972
    Between January 1976 and December 1992, 17 patients on follow-up at Systemic Erythematosus (SLE) Clinic in the University Hospital, Kuala Lumpur had onset of the disease after the age of 50 years. This constituted about 4% of our total SLE patients. They formed a distinct subgroup of the lupus population with an insidious onset and have a benign course compared to the younger SLE patients. Arthritis and skin rashes were the commonest initial manifestations. Renal and central nervous system manifestations were uncommon but pulmonary involvement was frequent compared to young SLE patients. The prevalence of positive autoantibodies and hypocomplementaemia were lower. Disease activity showed no correlation with erythrocyte sendimentation rate, autoantibodies or complement levels. Overall prognosis in these late-onset patients was favourable with a good response to steroids and less frequent relapses.
    Study site: SLE clinic, University Malaya Medical Centre (UMMC), Kuala Lumpur, Malaysia
    Matched MeSH terms: Age of Onset
  12. Fulltext Overview of breast cancer in Malaysian women: a problem with late diagnosis
    Hisham AN, Yip CH
    Asian J Surg, 2004 Apr;27(2):130-3.
    PMID: 15140665
    Breast cancer is the most common cancer among Malaysian women. There is a marked geographical difference in the worldwide incidence of breast cancer, with a higher incidence in developed countries compared to developing countries. From 1998 to 2001, new cases of breast cancer presenting to the breast clinics at Hospital Kuala Lumpur and University Malaya Medical Centre, Malaysia, were reviewed; the race, age and stage at presentation were analysed. Of 774 cases seen in Hospital Kuala Lumpur, only 5.2% (40/774) were impalpable breast cancers diagnosed on mammography. The prevalent age group was 40 to 49 years, and the median age was 50 years. The average size of the tumour was 5.4 cm in diameter. Malay women appear to have larger tumours and a later stage at presentation than other ethnic groups; 50% to 60% were in late stages (Stages 3 and 4). During the same period, 752 new cases of breast cancer were seen in the University Malaya Medical Centre. The average tumour size was 4.2 cm, and 30% to 40% were in late stages. The age incidence was similar. The delay in presentation of breast cancer was attributed to a strong belief in traditional medicine, the negative perception of the disease, poverty and poor education, coupled with fear and denial. A prospective, population-based study is required to determine the demographic pattern of breast cancer and the factors delaying presentation. These findings will have important implications in future programmes to promote the early detection of breast cancer, as well as in understanding geographical as well as racial variations in the incidence of breast cancer.
    Matched MeSH terms: Age of Onset
  13. Fulltext Visual outcome and factors influencing surgical outcome of horizontal strabismus surgery in a teaching hospital in Malaysia: A 5-year experience
    Waheeda-Azwa H, Norihan I, Tai ELM, Kueh YC, Shatriah I
    Taiwan J Ophthalmol, 2020 02 12;10(4):278-283.
    PMID: 33437601 DOI: 10.4103/tjo.tjo_71_19
    PURPOSE: The available data on strabismus surgery in South East Asian countries are scarce. This study aimed to identify visual outcome and factors influencing surgical outcome of horizontal strabismus surgery in a Southeast Asian cohort.

    MATERIALS AND METHODS: A retrospective review of patients who underwent horizontal strabismus surgery between 2013 and 2017 in Hospital Universiti Sains Malaysia was conducted. Surgery was considered successful if the post-operative deviation was within 10 prism diopters at 6 months' postoperative period. Factors influencing the outcome of surgery at 6 months were identified. Chi-square and Fisher's exact tests were used in data analysis.

    RESULTS: Ninety-eight patients were included. Both genders were equally affected. Exotropia (58.2%) was the most common type. About 65.3% of patients had alternating strabismus, while 51% had an angle of deviation of more than 45 prism diopters. Amblyopia was documented in 14.3% of patients. Those operated on below 10 years of age comprised 64.3%. Ninety-four patients completed follow-ups at 6 months after the surgery. The success rate was 81.6%. Approximately 92% of the patients had best-corrected visual acuities of 6/12 and better at 6 months' postoperative period. There was no significant association between age of onset, gender, presence of amblyopia, type of deviation, amount of deviation, and postoperative best-corrected visual acuity with surgical outcome at 6 months' postoperative period (P > 0.05).

    CONCLUSION: The success rate was good. Postoperative best-corrected visual acuity was promising. Age of onset, gender, presence of amblyopia, type of deviation, amount of deviation, and postoperative best-corrected visual acuity did not influence the outcome of horizontal strabismus surgery in our review.

    Matched MeSH terms: Age of Onset
  14. The BRCA1 and BRCA2 Genes in Early-Onset Breast Cancer Patients
    Saleem M, Ghazali MB, Wahab MAMA, Yusoff NM, Mahsin H, Seng CE, et al.
    Adv Exp Med Biol, 2020;1292:1-12.
    PMID: 29687286 DOI: 10.1007/5584_2018_147
    Approximately 5-10% of breast cancers are attributable to genetic susceptibility. Mutations in the BRCA1 and BRCA2 genes are the best known genetic factors to date. The goal of this study was to determine the structure and distribution of haplotypes of the BRCA1 and BRCA2 genes in early-onset breast cancer patients. We enrolled 70 patients diagnosed with early-onset breast cancer. A total of 21 SNPs (11 on BRCA1 and 10 on BRCA2) and 1 dinucleotide deletion on BRCA1 were genotyped using nested allele-specific PCR methods. Linkage disequilibrium (LD) analysis was conducted, and haplotypes were deduced from the genotype data. Two tightly linked LD blocks were observed on each of the BRCA1 and BRCA2 genes. Variant-free haplotypes (TAT-AG for BRCA1 and ATA-AAT for BRCA2) were observed at a frequency of more than 50% on each gene along with variable frequencies of derived haplotypes. The variant 3'-subhaplotype CGC displayed strong LD with 5'-subhaplotypes GA, AA, and GG on BRCA1 gene. Haplotypes ATA-AGT, ATC-AAT, and ATA-AAC were the variant haplotypes frequent on BRCA2 gene. Although the clinical significance of these derived haplotypes has not yet been established, it is expected that some of these haplotypes, especially the less frequent subhaplotypes, eventually will be shown to be indicative of a predisposition to early-onset breast cancer.
    Matched MeSH terms: Age of Onset
  15. Fulltext Genotypic and phenotypic variation of CADASIL among Chinese, Indians and Rungus in Malaysia
    Toh, Tsun-Haw, Lim, Kheng-Seang, Ng, Ching-Ching, Imran Idris, Sherrini Bazir Ahmad, Lim, Thien-Thien, et al.
    Neuroscience Research Notes, 2019;2(3):1-11.
    MyJurnal
    Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) is a hereditary disease of small cerebral arteries. This case series aims to describe the mutations in NOTCH3and their phenotypes in Malaysia. We includedpatients who were genetically confirmed to have CADASIL, diagnosed at the University of Malaya Medical Centre, Malaysia. Family members who fulfilled clinical or imaging criteria, and patients from two previous published Malaysian families were also included. Six families (eleven cases) were included in this series. Genetic testing revealed NOTCH3 mutations in c.328C>T (p.Arg110Cys, R110C), c.553T>G (p.Cys185Gly, C185G), c.1630C>T (p.Arg544Cys, R544C) and c.160C>T (p.Arg54Cys, R54C). Two out of four Chinese families had R544C mutation in exon 11, with a later age of onset, absence of migraine and lack of anterior temporal pole involvement on MRI. One family with mixed Indian and Chinese ancestry had a mutation in exon 3 with R110C and another Indian family exon 4 with C185G mutation. This case series highlights the genotypic and phenotypic variability of CADASIL in a multi-ethniccountry. The finding of p.Arg544Cys mutation among the older Chinese families, similar to those reported in Jeju Island and Taiwan, suggest the need to screen the older Chinese stroke patients with typical MRI changes.
    Matched MeSH terms: Age of Onset
  16. Diabetic cataract in the Nile grass rat: A longitudinal phenotypic study of pathology formation
    Ranaei Pirmardan E, Barakat A, Zhang Y, Naseri M, Hafezi-Moghadam A
    FASEB J, 2021 Jun;35(6):e21593.
    PMID: 33991133 DOI: 10.1096/fj.202100353R
    Diabetes is a major risk factor for cataract, the leading cause of blindness worldwide. There is an unmet need for a realistic model of diabetic cataract for mechanistic and longitudinal studies, as existing models do not reflect key aspects of the complex human disease. Here, we introduce and characterize diabetic cataract in the Nile grass rat (NGR, Arvicanthis niloticus), an established model of metabolic syndrome and type 2 diabetes (T2D). We conducted a longitudinal study of cataract in over 88 NGRs in their non-diabetic, pre-diabetic, and diabetic stages of metabolism. Oral glucose tolerance test (OGTT) results distinguished the metabolic stages. Diverse cataract types were observed in the course of diabetes, including cortical, posterior subcapsular (PSC), and anterior subcapsular (ASC), all of which succeeded a characteristic dotted ring stage in all animals. The onset ages of diabetes and cataract were 44 ± 3 vs 29 ± 1 (P 
    Matched MeSH terms: Age of Onset
  17. Fulltext The Unique Biology behind the Early Onset of Breast Cancer
    Siddig A, Tengku Din TADA, Mohd Nafi SN, Yahya MM, Sulong S, Wan Abdul Rahman WF
    Genes (Basel), 2021 03 05;12(3).
    PMID: 33807872 DOI: 10.3390/genes12030372
    Breast cancer commonly affects women of older age; however, in developing countries, up to 20% of breast cancer cases present in young women (younger than 40 years as defined by oncology literature). Breast cancer in young women is often defined to be aggressive in nature, usually of high histological grade at the time of diagnosis and negative for endocrine receptors with poor overall survival rate. Several researchers have attributed this aggressive nature to a hidden unique biology. However, findings in this aspect remain controversial. Thus, in this article, we aimed to review published work addressing somatic mutations, chromosome copy number variants, single nucleotide polymorphisms, differential gene expression, microRNAs and gene methylation profile of early-onset breast cancer, as well as its altered pathways resulting from those aberrations. Distinct biology behind early-onset of breast cancer was clear among estrogen receptor-positive and sporadic cases. However, further research is needed to determine and validate specific novel markers, which may help in customizing therapy for this group of patients.
    Matched MeSH terms: Age of Onset
  18. Ethnic variation of genetic (idiopathic) generalized epilepsy in Malaysia
    Lim KS, Ng CC, Chan CK, Foo WS, Low JS, Tan CT
    Seizure, 2017 Feb;45:24-27.
    PMID: 27912112 DOI: 10.1016/j.seizure.2016.11.011
    PURPOSE: Ethnic variation in epilepsy classification was reported in the Epilepsy Phenome/Genome Project. This study aimed to determine the ethnic variation in the prevalence of genetic (idiopathic) generalized epilepsy (GGE) and GGE with family history in a multi-ethnic Asian population in Malaysia.

    METHOD: In this cross-sectional study, 392 patients with a clinical diagnosis of GGE were recruited in the neurology outpatient clinic, University of Malaya Medical Centre (UMMC), from January 2011 till April 2016.

    RESULTS: In our epilepsy cohort (n=2100), 18.7% were diagnosed to have GGE. Of those, 28.6% >(N=112) had family history of epilepsy with a mean age of seizure onset of 16.5 years old, and 42.0% had myoclonic seizures (N=47). The lifetime prevalence of epilepsy among first-degree relative of those with GGE and positive family history was 15.0%. Analysis according to ethnicity showed that Malaysian Chinese had the lowest percentage of GGE among those with epilepsy (12.3%), as compared with Indian and Malay (25.3% and 21.3%, p<0.001). In addition, 32.1% of these Indian patients with GGE had positive family history, which is more than the Malay (26.4%) and Chinese (27.5%) ethnic groups. Consanguineous marriage was noted in 5 Indian families with positive family history (9.6%).

    CONCLUSION: There was ethnic variation in the prevalence of GGE, whereby the Malaysian Chinese had the lowest percentage of GGE as compared with Indian and Malay. A substantial proportion of GGE had positive family history among the three ethnics groups.

    Study site: neurology outpatient clinic, University of Malaya Medical Centre (UMMC)
    Matched MeSH terms: Age of Onset
  19. Oxidative status and reduced glutathione levels in premature coronary artery disease and coronary artery disease
    Musthafa QA, Abdul Shukor MF, Ismail NAS, Mohd Ghazi A, Mohd Ali R, M Nor IF, et al.
    Free Radic Res, 2017 Oct;51(9-10):787-798.
    PMID: 28899235 DOI: 10.1080/10715762.2017.1379602
    Identifying patients at risk of developing premature coronary artery disease (PCAD) which occurs at age below 45 years old and constitutes approximately 7-10% of coronary artery disease (CAD) worldwide remains a problem. Oxidative stress has been proposed as a crucial step in the early development of PCAD. This study was conducted to determine the oxidative status of PCAD in comparison to CAD patients. PCAD (<45 years old) and CAD (>60 years old) patients were recruited with age-matched controls (n = 30, each group). DNA damage score, plasma malondialdehyde (MDA) and protein carbonyl content were measured for oxidative damage markers. Antioxidants such as erythrocyte glutathione (GSH), oxidised glutathione (GSSG), and glutathione peroxidase activity (GPx), superoxide dismutase (SOD) and catalase (CAT) were also determined. DNA damage score and protein carbonyl content were significantly higher in both PCAD and CAD when compared to age-matched controls while MDA level was increased only in PCAD (p
    Matched MeSH terms: Age of Onset
  20. Fulltext Association of LRRK2 Haplotype With Age at Onset in Parkinson Disease
    Xiao B, Deng X, Ng EY, Allen JC, Lim SY, Ahmad-Annuar A, et al.
    JAMA Neurol, 2018 01 01;75(1):127-128.
    PMID: 29131875 DOI: 10.1001/jamaneurol.2017.3363
    Matched MeSH terms: Age of Onset
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