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Mavinkurve M, Ramzi NH, Jalaludin MYB, Samingan N, Zaini AA. Predictors and Trends of Diabetic Ketoacidosis at Diagnosis of Type 1 Diabetes Mellitus in Malaysian Children. J Clin Res Pediatr Endocrinol 2024:0-0. [PMID: 38683019 DOI: 10.4274/jcrpe.galenos.2024.2024-1-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/01/2024] Open
Abstract
Objectives Previous reports indicate that diabetic ketoacidosis (pDKA) rates in Malaysian children with type 1 diabetes range between 54-75%, which is higher than most European nations. Knowledge of trends and predictors of DKA can be helpful to inform measures to lower the rates of DKA. However, this data is lacking in Malaysian children. Hence, the aim of this study was to determine the predictors and trends of pDKA in Malaysian children at the initial diagnosis of T1DM. Methods This cross-sectional study examined demographic, clinical and biochemical data of all newly diagnosed Malaysian children aged 0-18 years with T1DM over 11 years from a single centre. Regression analyses determined the predictors and trends. Results The overall pDKA rate was 73.2%, of which 54.9% were severe DKA. Age ≥5 years (OR 12.29, 95% CI 1.58, 95.58, p= 0.017) and misdiagnosis (OR 3.73, 95% CI 1.36, 10.24 p=0.01) were significant predictors of a DKA presentation. No significant trends in the annual rates of DKA, severe DKA nor children <5 years presenting with DKA were found over the 11-years study period. Conclusion DKA rates at initial diagnosis of T1DM in Malaysian children are high and severe DKA accounts for a significant burden. Though misdiagnosis and age ≥5 years are predictors of DKA, misdiagnosis can be improved through awareness and education. The lack of downward trends in DKA and severe DKA highlights the urgency to develop measures to curb its rates.
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Affiliation(s)
- Meenal Mavinkurve
- Department of Paediatrics, School of Medicine, International Medical University, Jalan Rasah, Seremban
| | - Nurul Hanis Ramzi
- Institute for Research, Development and Innovation, International Medical University, Jalan Jalil Perkasa, Bukit Jalil, KL
| | | | - Nurshadia Samingan
- Department of Paediatrics, Faculty of Medicine, Universiti Malaya, Kuala Lumpur
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Ramzi NH, Auvinen J, Veijola J, Miettunen J, Ala-Mursula L, Sebert S, Keinänen-Kiukaanniemi S, Svento R, Jokelainen J, Drenos F, Dovey TM, Järvelin MR, Blakemore AIF. Depression mediates the relationship between alexithymia and obesity in the Northern Finland Birth Cohort 1966 (NFBC1966). J Affect Disord 2023; 331:1-7. [PMID: 36933669 DOI: 10.1016/j.jad.2023.03.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 03/08/2023] [Accepted: 03/11/2023] [Indexed: 03/20/2023]
Abstract
BACKGROUND The fact that a complex relationship exists between alexithymia and body mass index (BMI) is well established, but the underlying mechanisms remain poorly understood. Here, we explore the relationship between alexithymia and depressive symptoms in relation to adiposity measures, including the direct and indirect effect of alexithymia and depressive symptoms on obesity over a 15-year time-period, in the Northern Finland Birth Cohort 1966 (NFBC1966). METHODS The study included individuals from the Northern Finland Birth Cohort 1966 (NFBC1966) who had available data for adiposity measures (body mass index and waist-to-hip ratio), alexithymia (measured by the 20-Item Toronto Alexithymia Scale: TAS-20), depressive symptoms (measured by the 13-item depression subscale of Hopkins Symptom Checklist: HSCL-13) at age of 31 years (n = 4773) and 46 years (n = 4431). Pearson's (r) correlation, and multiple linear regression were used to investigate the relationships between alexithymia, depressive symptoms, and adiposity measures. The potential mediating role of depressive symptoms was examined via Hayes' procedure (PROCESS). RESULTS Positive correlations were confirmed between adiposity measures (BMI and WHR) and the TAS-20 score (and its subscale), but not between obesity and HSCL-13 score. The strongest correlation was between the DIF (difficulty identifying feelings) subscale of the TAS-20 and HSCL-13 at both time points (31 y: r(3013) = 0.41, p < 0.01, 46 y: r(3013) = 0.43, p < 0.01). Depressive symptoms completely (z = 2.55 (±0.00003), p = 0.01) and partly (z = 2.16 (±0.0001), p = 0.03) mediated the alexithymia-obesity relationship over the 15-year time-period. LIMITATIONS Other psychological and environmental factors such as interoception, dietary intake and physical activities may also play a role as a potential mediating factor in alexithymia-obesity relationship. CONCLUSIONS Our findings provide additional insights of theoretical framework of depressive symptoms mediation effect in the relationship between alexithymia and obesity. Alexithymia and depression should, therefore, be considered in the design of future clinical obesity research.
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Affiliation(s)
- Nurul Hanis Ramzi
- Institute for Research, Development and Innovation (IRDI), International Medical University, Kuala Lumpur, Malaysia; Department of Metabolism, Digestion and Reproduction, Division of Diabetes, Endocrinology, and Metabolism, Faculty of Medicine, Imperial College London, United Kingdom; Department of Life Sciences, College of Health, Medicine and Life Sciences, Brunel University London, United Kingdom.
| | - Juha Auvinen
- Research Unit of Population Health, Faculty of Medicine, University of Oulu, Oulu, Finland; Unit of Primary Health Care and Medical Research Center, Oulu University Hospital, Oulu, Finland
| | - Juha Veijola
- Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland; Department of Psychiatry, University Hospital of Oulu, Oulu, Finland; Research Unit of Clinical Neuroscience, University of Oulu, Oulu, Finland
| | - Jouko Miettunen
- Research Unit of Population Health, Faculty of Medicine, University of Oulu, Oulu, Finland; Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
| | - Leena Ala-Mursula
- Research Unit of Population Health, Faculty of Medicine, University of Oulu, Oulu, Finland
| | - Sylvain Sebert
- Research Unit of Population Health, Faculty of Medicine, University of Oulu, Oulu, Finland
| | - Sirkka Keinänen-Kiukaanniemi
- Research Unit of Population Health, Faculty of Medicine, University of Oulu, Oulu, Finland; Unit of Primary Health Care and Medical Research Center, Oulu University Hospital, Oulu, Finland
| | - Rauli Svento
- Department of Economics, Oulu Business School, University of Oulu, Oulu, Finland
| | - Jari Jokelainen
- Research Unit of Population Health, Faculty of Medicine, University of Oulu, Oulu, Finland; Unit of Primary Health Care and Medical Research Center, Oulu University Hospital, Oulu, Finland
| | - Fotios Drenos
- Department of Life Sciences, College of Health, Medicine and Life Sciences, Brunel University London, United Kingdom
| | - Terence M Dovey
- Department of Life Sciences, College of Health, Medicine and Life Sciences, Brunel University London, United Kingdom
| | - Marjo-Riitta Järvelin
- Department of Life Sciences, College of Health, Medicine and Life Sciences, Brunel University London, United Kingdom; Research Unit of Population Health, Faculty of Medicine, University of Oulu, Oulu, Finland; Biocenter Oulu, University of Oulu, Finland; Unit of Primary Health Care and Medical Research Center, Oulu University Hospital, Oulu, Finland; Department of Epidemiology and Biostatistics, MRC-PHE Centre for Environment & Health, School of Public Health, Imperial College London, London, United Kingdom
| | - Alexandra I F Blakemore
- Department of Metabolism, Digestion and Reproduction, Division of Diabetes, Endocrinology, and Metabolism, Faculty of Medicine, Imperial College London, United Kingdom; Department of Life Sciences, College of Health, Medicine and Life Sciences, Brunel University London, United Kingdom
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Yih Ting SF, Wen Chien KC, Ramzi NH, Pau A, Kunnath Menon R. Personality Traits and Annual Income Determine the Willingness to Pay for a Single Tooth Implant. Healthcare (Basel) 2021; 9:healthcare9080952. [PMID: 34442089 PMCID: PMC8391254 DOI: 10.3390/healthcare9080952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Revised: 07/14/2021] [Accepted: 07/15/2021] [Indexed: 11/16/2022] Open
Abstract
The objective of this study was to evaluate the factors influencing the willingness to pay for a single tooth implant in Malaysia and to assess if an additional evidence-based patient education video increases the willingness to pay. A total of 100 subjects seeking single tooth replacement at the Oral Health Centre, International Medical University (IMU), Kuala Lumpur, Malaysia, were asked to complete questionnaires about personal demographics and personality traits. Subsequently, they were randomly allocated into two groups. Group C received a conventional patient-dentist interaction on treatment options for missing teeth, while Group EV received the same content with an additional evidence-based video on the survival rate and complications for each option from recent meta-analyses. Willingness to pay the median price and the highest price that the subjects were willing to pay were assessed by a structured bidding process. A higher annual income was significantly associated with willingness to pay the median price for a single tooth implant (χ2 = 6.91, p = 0.03). Dominant personality traits of openness (r = -0.25), conscientiousness (r = -0.30) and agreeableness (r = -0.20) were negatively correlated with the highest price that the patients were willing to pay for a single tooth implant (Pearson's correlation test, p < 0.05). No significant difference in willingness to pay was found between Group C and Group EV (χ2 = 0.05, p > 0.05). In conclusion, patient education strategies for single tooth replacements with dental implants should be customized based on a patient's personality and income to maximize effectiveness.
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Affiliation(s)
- Shirlene Foo Yih Ting
- School of Dentistry, International Medical University, Kuala Lumpur 57000, Malaysia; (S.F.Y.T.); (K.C.W.C.); (A.P.)
| | - Kimberley Chew Wen Chien
- School of Dentistry, International Medical University, Kuala Lumpur 57000, Malaysia; (S.F.Y.T.); (K.C.W.C.); (A.P.)
| | - Nurul Hanis Ramzi
- Institute for Research, Development and Innovation, International Medical University, Kuala Lumpur 57000, Malaysia;
| | - Allan Pau
- School of Dentistry, International Medical University, Kuala Lumpur 57000, Malaysia; (S.F.Y.T.); (K.C.W.C.); (A.P.)
| | - Rohit Kunnath Menon
- Restorative Dentistry, School of Dentistry, International Medical University, Kuala Lumpur 57000, Malaysia
- Correspondence:
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Voon K, Johari NA, Lim KL, Wong ST, Khaw LT, Wong SF, Chan EWL, Chan KK, Tan BK, Ramzi NH, Lim PKC, Sulaiman LH. COVID-19 Sample Pooling: From RNA Extraction to Quantitative Real-time RT-PCR. Bio Protoc 2021; 11:e4005. [PMID: 34124305 DOI: 10.21769/bioprotoc.4005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 03/02/2021] [Accepted: 03/02/2021] [Indexed: 11/02/2022] Open
Abstract
The COVID-19 pandemic requires mass screening to identify those infected for isolation and quarantine. Individually screening large populations for the novel pathogen, Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), is costly and requires a lot of resources. Sample pooling methods improve the efficiency of mass screening and consume less reagents by increasing the capacity of testing and reducing the number of experiments performed, and are therefore especially suitable for under-developed countries with limited resources. Here, we propose a simple, reliable pooling strategy for COVID-19 testing using clinical nasopharyngeal (NP) and/or oropharyngeal (OP) swabs. The strategy includes the pooling of 10 NP/OP swabs for extraction and subsequent testing via quantitative real-time reverse transcription polymerase chain reaction (RT-qPCR), and may also be applied to the screening of other pathogens.
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Affiliation(s)
- Kenny Voon
- Pathology Division, School of Medicine, International Medical University, Kuala Lumpur, Malaysia
| | - Nur Alia Johari
- Institute for Research, Development and Innovation (IRDI), International Medical University, Kuala Lumpur, Malaysia
| | - Khai Lone Lim
- Institute for Research, Development and Innovation (IRDI), International Medical University, Kuala Lumpur, Malaysia
| | - Siew Tung Wong
- Pathology Division, School of Medicine, International Medical University, Kuala Lumpur, Malaysia
| | - Loke Tim Khaw
- Pathology Division, School of Medicine, International Medical University, Kuala Lumpur, Malaysia
| | - Shew Fung Wong
- Pathology Division, School of Medicine, International Medical University, Kuala Lumpur, Malaysia.,Centre for Environmental and Population Health Research, Institute for Research, Development and Innovation, International Medical University, Kuala Lumpur, Malaysia
| | - Elaine W L Chan
- Institute for Research, Development and Innovation (IRDI), International Medical University, Kuala Lumpur, Malaysia
| | - Kok Keong Chan
- Human Biology Division, School of Medicine, International Medical University, Kuala Lumpur, Malaysia
| | - Boon Keat Tan
- Human Biology Division, School of Medicine, International Medical University, Kuala Lumpur, Malaysia
| | - Nurul Hanis Ramzi
- Institute for Research, Development and Innovation (IRDI), International Medical University, Kuala Lumpur, Malaysia
| | - Patricia K C Lim
- Pathology Division, School of Medicine, International Medical University, Kuala Lumpur, Malaysia.,Institute for Research, Development and Innovation (IRDI), International Medical University, Kuala Lumpur, Malaysia
| | - Lokman H Sulaiman
- Department of Community Medicine, School of Medicine, International Medical University, Kuala Lumpur, Malaysia.,Centre for Environmental and Population Health Research, Institute for Research, Development and Innovation, International Medical University, Kuala Lumpur, Malaysia
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Lim KL, Johari NA, Wong ST, Khaw LT, Tan BK, Chan KK, Wong SF, Chan WLE, Ramzi NH, Lim PKC, Hakim SL, Voon K. A novel strategy for community screening of SARS-CoV-2 (COVID-19): Sample pooling method. PLoS One 2020; 15:e0238417. [PMID: 32857823 PMCID: PMC7454965 DOI: 10.1371/journal.pone.0238417] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 08/17/2020] [Indexed: 11/18/2022] Open
Abstract
The rapid global spread of the coronavirus disease (COVID-19) has inflicted significant health and socioeconomic burden on affected countries. As positive cases continued to rise in Malaysia, public health laboratories experienced an overwhelming demand for COVID-19 screening. The confirmation of positive cases of COVID-19 has solely been based on the detection of the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) using real-time reverse transcription polymerase chain reaction (qRT-PCR). In efforts to increase the cost-effectiveness and efficiency of COVID-19 screening, we evaluated the feasibility of pooling clinical Nasopharyngeal/Oropharyngeal (NP/OP) swab specimens during nucleic acid extraction without a reduction in sensitivity of qRT-PCR. Pools of 10 specimens were extracted and subsequently tested by qRT-PCR according to the WHO-Charité protocol. We demonstrated that the sample pooling method showed no loss of sensitivity. The effectiveness of the pooled testing strategy was evaluated on both retrospective and prospective samples, and the results showed a similar detection sensitivity compared to testing individual sample alone. This study demonstrates the feasibility of using a pooled testing strategy to increase testing capacity and conserve resources, especially when there is a high demand for disease testing.
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Affiliation(s)
- Khai Lone Lim
- Institute for Research, Development and Innovation (IRDI), International Medical University, Kuala Lumpur, Malaysia
| | - Nur Alia Johari
- Institute for Research, Development and Innovation (IRDI), International Medical University, Kuala Lumpur, Malaysia
| | - Siew Tung Wong
- Pathology Division, School of Medicine, International Medical University, Kuala Lumpur, Malaysia
| | - Loke Tim Khaw
- Pathology Division, School of Medicine, International Medical University, Kuala Lumpur, Malaysia
| | - Boon Keat Tan
- Human Biology Division, School of Medicine, International Medical University, Kuala Lumpur, Malaysia
| | - Kok Keong Chan
- Human Biology Division, School of Medicine, International Medical University, Kuala Lumpur, Malaysia
| | - Shew Fung Wong
- Pathology Division, School of Medicine, International Medical University, Kuala Lumpur, Malaysia
- Centre for Environmental and Population Health Research, Institute for Research, Development and Innovation, International Medical University, Kuala Lumpur, Malaysia
| | - Wan Ling Elaine Chan
- Institute for Research, Development and Innovation (IRDI), International Medical University, Kuala Lumpur, Malaysia
| | - Nurul Hanis Ramzi
- Institute for Research, Development and Innovation (IRDI), International Medical University, Kuala Lumpur, Malaysia
| | - Patricia Kim Chooi Lim
- Institute for Research, Development and Innovation (IRDI), International Medical University, Kuala Lumpur, Malaysia
- Pathology Division, School of Medicine, International Medical University, Kuala Lumpur, Malaysia
| | - Sulaiman Lokman Hakim
- Centre for Environmental and Population Health Research, Institute for Research, Development and Innovation, International Medical University, Kuala Lumpur, Malaysia
- Department of Community Medicine, School of Medicine, International Medical University, Kuala Lumpur, Malaysia
| | - Kenny Voon
- Pathology Division, School of Medicine, International Medical University, Kuala Lumpur, Malaysia
- * E-mail:
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Ramzi NH, Yiorkas AM, Sebert S, Keinänen-Kiukaanniemi S, Ala-Mursula L, Svento R, Jokelainen J, Veijola J, Auvinen J, Miettunen J, Dovey TM, Järvelin MR, Blakemore AIF. Relationship between BMI and emotion-handling capacity in an adult Finnish population: The Northern Finland Birth Cohort 1966. PLoS One 2018; 13:e0203660. [PMID: 30256810 PMCID: PMC6157858 DOI: 10.1371/journal.pone.0203660] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 08/26/2018] [Indexed: 12/02/2022] Open
Abstract
Background Alexithymia, a difficulty in identifying and expressing emotions, has been associated with obesity and eating disorders in small-scale cross-sectional studies. Here, we assess the relationship between body mass index (BMI) and alexithymia in a large cohort of free-living Finnish adults over a 15-year period. Methods Participants were drawn from the Northern Finnish Birth Cohort 1966 (NFBC1966). The 20-Item Toronto Alexithymia Scale (TAS-20) was used as a measure of alexithymia and was completed at the age of 31 years (31y: n = 4841), and 46 years (46y: n = 5404). BMI was recorded at both time points. Where data at both time points were available (n = 3274), the relationship between changes in BMI and TAS-20 over this time period was also investigated. Results BMI was significantly and positively associated with TAS-20 score (p<0.0001, both at 31 years and at 46 years of ages). The association remained statistically significant after adjustment for potential confounders (sex, marital status and several socio-economic indicators). In individuals who experienced the greatest change in BMI (in either direction) over the 15-year period, there was a modest mean increase in TAS-20 score. Conclusions Our data revealed that TAS-20 score was correlated with and co-varied with body mass status. We suggest that future clinical research should consider the role of alexithymia in obesity. Further investigation of this relationship is warranted to ensure that the needs of obese subjects with undiagnosed alexithymia are considered in the design of weight management programmes.
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Affiliation(s)
- Nurul Hanis Ramzi
- Section of Investigative Medicine, Division of Diabetes, Endocrinology, and Metabolism, Faculty of Medicine, Imperial College London, London, United Kingdom
- Department of Life Sciences, College of Health and Life Sciences, Brunel University London, London, United Kingdom
- * E-mail:
| | - Andrianos M. Yiorkas
- Section of Investigative Medicine, Division of Diabetes, Endocrinology, and Metabolism, Faculty of Medicine, Imperial College London, London, United Kingdom
- Department of Life Sciences, College of Health and Life Sciences, Brunel University London, London, United Kingdom
| | - Sylvain Sebert
- Center for Life Course Health Research, Faculty of Medicine, University of Oulu, Oulu, Finland
- Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Sirkka Keinänen-Kiukaanniemi
- Center for Life Course Health Research, Faculty of Medicine, University of Oulu, Oulu, Finland
- Unit of Primary Health Care and Medical Research Center, Oulu University Hospital, Oulu, Finland
| | - Leena Ala-Mursula
- Center for Life Course Health Research, Faculty of Medicine, University of Oulu, Oulu, Finland
| | - Rauli Svento
- Center for Life Course Health Research, Faculty of Medicine, University of Oulu, Oulu, Finland
- Unit of Primary Health Care and Medical Research Center, Oulu University Hospital, Oulu, Finland
| | - Jari Jokelainen
- Center for Life Course Health Research, Faculty of Medicine, University of Oulu, Oulu, Finland
- Unit of Primary Health Care and Medical Research Center, Oulu University Hospital, Oulu, Finland
| | - Juha Veijola
- Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
| | - Juha Auvinen
- Center for Life Course Health Research, Faculty of Medicine, University of Oulu, Oulu, Finland
- Unit of Primary Health Care and Medical Research Center, Oulu University Hospital, Oulu, Finland
| | - Jouko Miettunen
- Center for Life Course Health Research, Faculty of Medicine, University of Oulu, Oulu, Finland
- Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
- Department of Psychiatry, Research Unit of Clinical Neuroscience, Oulu University Hospital and University of Oulu, Oulu, Finland
| | - Terence M. Dovey
- Department of Life Sciences, College of Health and Life Sciences, Brunel University London, London, United Kingdom
| | - Marjo-Riitta Järvelin
- Department of Life Sciences, College of Health and Life Sciences, Brunel University London, London, United Kingdom
- Center for Life Course Health Research, Faculty of Medicine, University of Oulu, Oulu, Finland
- Biocenter Oulu, University of Oulu, Oulu, Finland
- Unit of Primary Health Care and Medical Research Center, Oulu University Hospital, Oulu, Finland
- Department of Epidemiology and Biostatistics, MRC-PHE Centre for Environment & Health, School of Public Health, Imperial College London, London, United Kingdom
| | - Alexandra I. F. Blakemore
- Section of Investigative Medicine, Division of Diabetes, Endocrinology, and Metabolism, Faculty of Medicine, Imperial College London, London, United Kingdom
- Department of Life Sciences, College of Health and Life Sciences, Brunel University London, London, United Kingdom
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Nor Hashim NA, Ramzi NH, Velapasamy S, Alex L, Chahil JK, Lye SH, Munretnam K, Haron MR, Ler LW. Identification of genetic and non-genetic risk factors for nasopharyngeal carcinoma in a Southeast Asian population. Asian Pac J Cancer Prev 2016; 13:6005-10. [PMID: 23464394 DOI: 10.7314/apjcp.2012.13.12.6005] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Nasopharyngeal carcinoma (NPC) is endemic in Southern Chinese and Southeast Asian populations. Geographical and ethnic clustering of the cancer is due to genetic, environmental, and lifestyle risk factors. This case-control study aimed to identify or confirm both genetic and non-genetic risk factors for NPC in one of the endemic countries, Malaysia. MATERIALS AND METHOD A panel of 768 single-nucleotide polymorphisms (SNPs) previously associated with various cancers and known non-genetic risk factors for NPC were selected and analyzed for their associations with NPC in a case-control study. RESULTS Statistical analysis identified 40 SNPs associated with NPC risk in our population, including 5 documented previously by genome-wide association studies (GWAS) and other case-control studies; the associations of the remaining 35 SNPs with NPC were novel. In addition, consistent with previous studies, exposure to occupational hazards, overconsumption of salt-cured foods, red meat, as well as low intake of fruits and vegetables were also associated with NPC risk. CONCLUSIONS In short, this study confirmed and/or identified genetic, environmental and dietary risk factors associated with NPC susceptibility in a Southeast Asian population.
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Affiliation(s)
- Nikman Adli Nor Hashim
- Molecular Research and Services Laboratory, INFOVALLEY® Life Sciences Sdn. Mines Resort City, Selangor, Malaysia.
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Alex L, Ler LW, Ramzi NH, Chahil JK, Lye SH, Metnam K, Sahadevappa KI, Velapasamy S, Hashim NAN, Cheah SK, Lim GCC, Hussein H, Haron MR. Authors′ response. Indian J Med Res 2015; 141:246. [PMID: 26080469 PMCID: PMC4418165 DOI: 10.4103/0971-5916.155598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Chahil JK, Munretnam K, Samsudin N, Lye SH, Hashim NAN, Ramzi NH, Velapasamy S, Wee LL, Alex L. Genetic polymorphisms associated with breast cancer in malaysian cohort. Indian J Clin Biochem 2014; 30:134-9. [PMID: 25883419 DOI: 10.1007/s12291-013-0414-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2013] [Accepted: 12/11/2013] [Indexed: 10/25/2022]
Abstract
Genome-wide association studies have discovered multiple single nucleotide polymorphisms (SNPs) associated with the risk of common diseases. The objective of this study was to demonstrate the replication of previously published SNPs that showed statistical significance for breast cancer in the Malaysian population. In this case-control study, 80 subjects for each group were recruited from various hospitals in Malaysia. A total of 768 SNPs were genotyped and analyzed to distinguish risk and protective alleles. A total of three SNPs were found to be associated with increased risk of breast cancer while six SNPs showed protective effect. All nine were statistically significant SNPs (p ≤ 0.01), five SNPs from previous studies were successfully replicated in our study. Significant modifiable (diet) and non-modifiable (family history of breast cancer in first degree relative) risk factors were also observed. We identified nine SNPs from this study to be either conferring susceptibility or protection to breast cancer which may serve as potential markers in risk prediction.
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Affiliation(s)
- Jagdish Kaur Chahil
- Molecular Research and Services Laboratory, INFOVALLEY® Life Sciences Sdn. Bhd., Unit 101, Level 1, Block B, Mines Waterfront Business Park, No. 3, Jalan Tasik, 43300 MINES Resort City, Selangor Malaysia
| | - Khamsigan Munretnam
- Molecular Research and Services Laboratory, INFOVALLEY® Life Sciences Sdn. Bhd., Unit 101, Level 1, Block B, Mines Waterfront Business Park, No. 3, Jalan Tasik, 43300 MINES Resort City, Selangor Malaysia
| | - Nurulhafizah Samsudin
- Molecular Research and Services Laboratory, INFOVALLEY® Life Sciences Sdn. Bhd., Unit 101, Level 1, Block B, Mines Waterfront Business Park, No. 3, Jalan Tasik, 43300 MINES Resort City, Selangor Malaysia
| | - Say Hean Lye
- Molecular Research and Services Laboratory, INFOVALLEY® Life Sciences Sdn. Bhd., Unit 101, Level 1, Block B, Mines Waterfront Business Park, No. 3, Jalan Tasik, 43300 MINES Resort City, Selangor Malaysia
| | - Nikman Adli Nor Hashim
- Molecular Research and Services Laboratory, INFOVALLEY® Life Sciences Sdn. Bhd., Unit 101, Level 1, Block B, Mines Waterfront Business Park, No. 3, Jalan Tasik, 43300 MINES Resort City, Selangor Malaysia
| | - Nurul Hanis Ramzi
- Molecular Research and Services Laboratory, INFOVALLEY® Life Sciences Sdn. Bhd., Unit 101, Level 1, Block B, Mines Waterfront Business Park, No. 3, Jalan Tasik, 43300 MINES Resort City, Selangor Malaysia
| | - Sharmila Velapasamy
- Molecular Research and Services Laboratory, INFOVALLEY® Life Sciences Sdn. Bhd., Unit 101, Level 1, Block B, Mines Waterfront Business Park, No. 3, Jalan Tasik, 43300 MINES Resort City, Selangor Malaysia
| | - Ler Lian Wee
- Molecular Research and Services Laboratory, INFOVALLEY® Life Sciences Sdn. Bhd., Unit 101, Level 1, Block B, Mines Waterfront Business Park, No. 3, Jalan Tasik, 43300 MINES Resort City, Selangor Malaysia
| | - Livy Alex
- Molecular Research and Services Laboratory, INFOVALLEY® Life Sciences Sdn. Bhd., Unit 101, Level 1, Block B, Mines Waterfront Business Park, No. 3, Jalan Tasik, 43300 MINES Resort City, Selangor Malaysia
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Munretnam K, Alex L, Ramzi NH, Chahil JK, Kavitha IS, Hashim NAN, Lye SH, Velapasamy S, Ler LW. Association of genetic and non-genetic risk factors with the development of prostate cancer in Malaysian men. Mol Biol Rep 2014; 41:2501-8. [PMID: 24443231 DOI: 10.1007/s11033-014-3107-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2013] [Accepted: 01/07/2014] [Indexed: 12/31/2022]
Abstract
There is growing global interest to stratify men into different levels of risk to developing prostate cancer, thus it is important to identify common genetic variants that confer the risk. Although many studies have identified more than a dozen common genetic variants which are highly associated with prostate cancer, none have been done in Malaysian population. To determine the association of such variants in Malaysian men with prostate cancer, we evaluated a panel of 768 SNPs found previously associated with various cancers which also included the prostate specific SNPs in a population based case control study (51 case subjects with prostate cancer and 51 control subjects) in Malaysian men of Malay, Chinese and Indian ethnicity. We identified 21 SNPs significantly associated with prostate cancer. Among these, 12 SNPs were strongly associated with increased risk of prostate cancer while remaining nine SNPs were associated with reduced risk. However, data analysis based on ethnic stratification led to only five SNPs in Malays and 3 SNPs in Chinese which remained significant. This could be due to small sample size in each ethnic group. Significant non-genetic risk factors were also identified for their association with prostate cancer. Our study is the first to investigate the involvement of multiple variants towards susceptibility for PC in Malaysian men using genotyping approach. Identified SNPs and non-genetic risk factors have a significant association with prostate cancer.
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Affiliation(s)
- Khamsigan Munretnam
- INFOVALLEY Group of Companies, INFOVALLEY® Life Sciences Sdn. Bhd., Unit 3 & 4, Level 7, Block C, Mines Waterfront Business Park, 43300, Seri Kembangan, Selangor, Malaysia
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Velapasamy S, Alex L, Chahil JK, Lye SH, Munretnam K, Hashim NAN, Ramzi NH, Nordin NM, Visvalingam V, Ler LW. Influences of multiple genetic polymorphisms on ovarian cancer risk in Malaysia. Genet Test Mol Biomarkers 2013; 17:62-8. [PMID: 23113749 DOI: 10.1089/gtmb.2012.0223] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVE The identification of high-risk individuals can help to improve early cancer detection and patient survival. Risk assessment, however, can only be accomplished if the risk factors are known. To date, the genetic risk factors for ovarian cancer, other than mutations in the BRCA1/2 genes, have never been systematically explored in Malaysia. The present study aims to identify from a panel of cancer-associated single-nucleotide polymorphisms (SNPs), those associated with ovarian cancer risk in Malaysia. METHODS A total of 768 SNPs associated with various cancers among Asians were identified through a search of the relevant literature, and these SNPs were then screened for their association with ovarian cancer. A total of 160 Malaysian subjects were recruited for the study, including both ovarian cancer patients and controls. Genotyping was carried out using Illumina BeadArray platform. RESULTS A panel of 45 SNPs that are significantly (p<0.05) associated with ovarian cancer risk was identified. These ovarian cancer-associated SNPs were located in genes implicated in various pathways of carcinogenesis. Of these 45 SNPs, 5 have been previously associated with either ovarian cancer risk or survival. CONCLUSION This study has identified a panel of 45 SNPs that are significantly associated with ovarian cancer in a Malaysian population.
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Affiliation(s)
- Sharmila Velapasamy
- Molecular Research and Services Laboratory, Infovalley® Life Sciences Sdn. Bhd., Mines Resort City, Malaysia
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Mokhtar NM, Ramzi NH, Yin-Ling W, Rose IM, Hatta Mohd Dali AZ, Jamal R. Laser capture microdissection with genome-wide expression profiling displayed gene expression signatures in endometrioid endometrial cancer. Cancer Invest 2011; 30:156-64. [PMID: 22122087 DOI: 10.3109/07357907.2011.633290] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
This research determined genes contributing to the pathogenesis of endometrioid endometrial cancer (EEC). Eight pairs of microdissected EEC samples matched with normal glandular epithelium were analyzed using microarray. Unsupervised analysis identified 162 transcripts (58 up- and 104 down-regulated) that were differentially expressed (p < .01, fold change ≥ 1.5) between both groups. Quantitative real-time polymerase chain reaction (qPCR) validated the genes of interest: SLC7A5, SATB1, H19, and ZAK (p < .05). Pathway analysis revealed genes involved in acid amino transport, translation, and chromatin remodeling (p < .05). Laser capture microdissection (LCM) followed by microarray enabled precise assessment of homogeneous cell population and identified putative genes for endometrial carcinogenesis.
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Affiliation(s)
- Norfilza Mohd Mokhtar
- UKM Medical Molecular Biology Institute, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Cheras 56000, Kuala Lumpur, Malaysia.
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