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Lee KW, Yap SF, Murdan S, Zainudin Z, Abdul Hamid H, Emamjomeh M, Mohd Desa MN, Sither Joseph NM, Azmai Amal MN, Amin-Nordin S. Maternal and neonatal group B streptococcus colonisation: A systematic review and the meta-analysis of matched-pair studies. Acta Paediatr 2024; 113:892-911. [PMID: 38351491 DOI: 10.1111/apa.17152] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 01/26/2024] [Accepted: 01/31/2024] [Indexed: 04/11/2024]
Abstract
AIM To determine the prevalence of group B Streptococcus (GBS) carriage among parturient women and neonates, and the relative risk of vertical transmission, the relative risk of early and late-onset GBS and the pooled incidence of early-late-onset GBS infection. METHODS A systematic search of relevant cohort studies from three electronic databases to identify all relevant studies published up to 7 November 2022. The review was conducted in accordance with PRISMA guidelines. Estimates were pooled using random-effects meta-analyses. RESULTS A total of 54 articles with 355 787 matched pairs of parturient women and neonates from 30 countries were included in the analysis. The pooled prevalence of GBS colonisation was 17.1% among the pregnant women and 1.0% among neonates. The pooled prevalence of vertical transmission of GBS was 4.5% and the pooled relative risk of GBS colonisation of neonates born to mothers with GBS was 9.9. CONCLUSION We support the implementation of targeted intrapartum antibiotic prophylaxis for all women who are positive for GBS as well as women with risks factors for early onset GBS in their infants regardless of their GBS colonisation status.
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Affiliation(s)
- Kai Wei Lee
- Department of Medical Microbiology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Sook Fan Yap
- Department of Pre-Clinical Sciences, Faculty of Medicine and Health Sciences, Universiti Tunku Abdul Rahman, Kajang, Selangor, Malaysia
- Centre for Research on Communicable Diseases, Universiti Tunku Abdul Rahman, Kajang, Malaysia
| | - Sudaxshina Murdan
- Department of Pharmaceutics, UCL School of Pharmacy, University College London, London, UK
| | - Zurina Zainudin
- Department of Paediatrics, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Habibah Abdul Hamid
- Department of Obstetric and Gynaecology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Mohsen Emamjomeh
- Department of Medical Microbiology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Mohd Nasir Mohd Desa
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Narcisse Mary Sither Joseph
- Department of Medical Microbiology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Mohammad Noor Azmai Amal
- Department of Biology, Faculty of Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Syafinaz Amin-Nordin
- Department of Medical Microbiology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
- Hospital Sultan Abdul Aziz Shah, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
- Institute of Bioscience, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
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Dapari R, Muniandy K, Fattah Azman AZ, Abu Bakar S, Mohd Desa MN, Hwa LC, Singh Sandhu S, Mustapha NF, Mohd Rosli N, Ahmad Zamzuri M‘AI, Hassan MR, Che Dom N, Syed Abdul Rahim SS, Singh Gill B, Ab Hamid N. Effectiveness of the Integrated Dengue Education and Learning (iDEAL) module in improving the knowledge, attitude, practice, environmental cleanliness index, and dengue index among schoolchildren: A randomised controlled trial protocol. PLoS One 2024; 19:e0302736. [PMID: 38687755 PMCID: PMC11060578 DOI: 10.1371/journal.pone.0302736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 04/02/2024] [Indexed: 05/02/2024] Open
Abstract
BACKGROUND Dengue is a mosquito-borne disease caused by four distinct, closely related dengue viruses (DENV). Global dengue incidence has markedly increased in the past decades. The World Health Organization reported that cases increased from 505,430 in 2000 to 5.2 million in 2019. Similarly, the total dengue cases in Malaysia increased from 7,103 in 2000 to a peak of 130,101 in 2019. Knowledge, attitude, and practice (KAP) remain the most effective dengue prevention and control tools. Furthermore, school-based health education is key to enhancing knowledge and raising awareness of the seriousness of dengue among schoolchildren and transferring knowledge and practice from classrooms to homes. Thus, it is necessary to plan an integrated module for the primary prevention of dengue infection, specifically among schoolchildren. AIMS The present study intends to develop, implement, and evaluate the effectiveness of a theory-based integrated dengue education and learning (iDEAL) module in improving the KAP, environmental cleanliness index, and dengue index among schoolchildren in Selangor and Kuala Lumpur. METHODS This study is a single-blinded, cluster randomised controlled trial to be conducted from 1 September 2023 to 31 August 2025. The study will involve 20 primary and 20 secondary schools in Selangor and Kuala Lumpur. The 1600 participants will be randomly allocated to intervention and control groups based on selected clusters to avoid contamination. A cluster is a comparable school that fulfils the inclusion and exclusion criteria. The intervention group will receive the iDEAL module, while the control group will receive standard education. The iDEAL module will be developed following a systematic procedure and delivered in-person by trained researchers to the participants. The outcome will be measured using validated, self-administered questionnaires at baseline (T0), immediately (T1), one month (T2), and three months (T3) post-intervention to measure the intervention module effectiveness. The data will be analysed using IBM Statistical Package for Social Science (SPSS) version 28 and descriptive and inferential statistics. Within-group changes over time will be compared using one-way repeated measure analysis of variance for continuous and normally distributed variables. Within-group analysis of categorical data will use Cochran's Q test. The main effect and interaction between and within the intervention and control groups at T0, T1, T2, and T3 will be tested using the generalised linear mixed model (GLMM). Hypothetically, the KAP, environmental cleanliness index, and dengue index among the intervention group will be significantly improved compared to the control group. The hypothesis will be tested using a significance level with a p-value of 0.05 and a confidence interval of 95%. CONCLUSIONS The study protocol outlines developing and testing an iDEAL module for schoolchildren in Selangor and Kuala Lumpur, with no socio-demographic differences expected. The intervention aims to improve KAP, environmental cleanliness index, and dengue index, potentially reducing dengue risk. Results could inform public health policies, emphasizing school-based interventions' importance in combating diseases like dengue.
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Affiliation(s)
- Rahmat Dapari
- Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | - Kalaivani Muniandy
- Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | | | - Suhaili Abu Bakar
- Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | - Mohd Nasir Mohd Desa
- Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | - Lim Chee Hwa
- Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | - Sukhvinder Singh Sandhu
- Selangor State Health Department, Ministry of Health Malaysia, Shah Alam, Selangor, Malaysia
| | | | - Norazman Mohd Rosli
- Kuala Lumpur and Putrajaya Health Department, Ministry of Health Malaysia, Kuala Lumpur, Malaysia
| | | | - Mohd Rohaizat Hassan
- Department of Community Health, Universiti Kebangsaan Malaysia, Cheras, Malaysia
| | - Nazri Che Dom
- Faculty of Health Sciences, Universiti Teknologi MARA, Bandar Puncak Alam, Malaysia
| | | | - Balvinder Singh Gill
- Institute for Medical Research, National Institutes of Health (NIH), Ministry of Health Malaysia, Shah Alam, Selangor, Malaysia
| | - Nurulhusna Ab Hamid
- Medical Entomology Unit, Institute for Medical Research, National Institutes of Health (NIH), Ministry of Health Malaysia, Setia Alam, Selangor, Malaysia
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Sultana S, Azlan A, Mohd Desa MN, Mahyudin NA, Anburaj A. A review of CRISPR-Cas and PCR-based methods for the detection of animal species in the food chain-current challenges and future prospects. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2024; 41:213-227. [PMID: 38284970 DOI: 10.1080/19440049.2024.2304577] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 01/08/2024] [Indexed: 01/30/2024]
Abstract
Regular testing and systematic investigation play a vital role to ensure product safety. Until now, the existing food authentication techniques have been based on proteins, lipids, and nucleic acid-based assays. Among various deoxyribonucleic acid (DNA)-based methods, the recently developed Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR) based bio-sensing is an innovative and fast-expanding technology. The CRISPR/Cas-9 is known as Clustered Regularly Interspaced Short Palindromic Repeats due to the flexibility and simplicity of the CRISPR/Cas9 site-specific editing tool has been applied in many biological research areas such as Gene therapy, cell line development, discovering mechanisms of disease, and drug discovery. Nowadays, the CRISPR-Cas system has also been introduced into food authentication via detecting DNA barcodes of poultry and livestock both in processed and unprocessed food samples. This review documents various DNA based approaches, in an accessible format. Future CRISPR technologies are forecast while challenges are outlined.
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Affiliation(s)
- Sharmin Sultana
- Laboratory of Halal Science Research, Halal Products Research Institute, Universiti Putra Malaysia, Serdang, Malaysia
| | - Azrina Azlan
- Laboratory of Halal Science Research, Halal Products Research Institute, Universiti Putra Malaysia, Serdang, Malaysia
- Department of Nutrition, Faculty of Medicine & Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
- Research Centre of Excellence for Nutrition and Non-Communicable Diseases, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | | | - Nor Ainy Mahyudin
- Laboratory of Halal Science Research, Halal Products Research Institute, Universiti Putra Malaysia, Serdang, Malaysia
| | - Amaladoss Anburaj
- Centre for Aquaculture and Veterinary Science (CAVS), School of Applied Science, Temasek Polytechnic, Singapore, Singapore
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Zaipul Anuar NF, Mohd Desa MN, Hussaini J, Wong EH, Mariappan V, Vellasamy KM, Palanisamy NK. Role of cell surface proteins and toll-like receptors in the pathogenesis of Streptococcus pneumoniae. Iran J Basic Med Sci 2024; 27:214-222. [PMID: 38234660 PMCID: PMC10790297 DOI: 10.22038/ijbms.2023.72584.15791] [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] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 08/08/2023] [Indexed: 01/19/2024]
Abstract
Objectives Pneumococcal cell wall (PCW) is an inflammatory component in Streptococcus pneumoniae. The cell surface proteins and the toll-like receptors (TLR) signaling response were investigated in the human lung epithelial (A549) cells inoculated with PCW of different serotypes. Materials and Methods The presence of genes encoding these proteins was determined using polymerase chain reaction (PCR). The structure of the cell walls was analyzed by proton nuclear magnetic resonance (1H NMR). The A549 cell line was challenged with PCW extracts of different serotypes. RNA from the infected host cells was extracted and tested against a total of 84 genes associated with TLR signaling pathways (TLR 1-6 and 10) using RT2 Profiler PCR Array. Results Cell surface proteins; ply, lytA, nanA, nanB, and cbpD genes were present in all serotypes. The distribution and structure of surface protein genes suggest behavioral changes in the molecules, contributing to the resilience of the strains to antibiotic treatment. Conclusion TLR2 showed the highest expression, while serotypes 1, 3, and 5 induced higher TNFα and IL-1α, suggesting to be more immunogenic than the other strains tested.
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Affiliation(s)
- Nurul Fathiyah Zaipul Anuar
- Institute of Medical Molecular Biotechnology (IMMB), Faculty of Medicine, Universiti Teknologi MARA (UiTM), Sungai Buloh Campus, Selangor, Malaysia
| | - Mohd Nasir Mohd Desa
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, (UPM), Serdang, Selangor, Malaysia
| | - Jamal Hussaini
- Department of Medical Microbiology & Parasitology, Faculty of Medicine, Universiti Teknologi MARA (UiTM), Sungai Buloh Campus, Selangor, Malaysia
- Institute of Pathology, Laboratory and Forensic Medicine (I-PPerForM), Universiti Teknologi MARA (UiTM), Sungai Buloh Campus, Jalan Hospital, Sungai Buloh, Selangor, Malaysia
| | - Eng Hwa Wong
- School of Medicine, Taylor’s University Lakeside Campus, Subang Jaya, Selangor, Malaysia
| | - Vanitha Mariappan
- Center for Toxicology and Health Risk Studies, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, Kuala Lumpur, Malaysia
| | - Kumutha Malar Vellasamy
- Department of Medical Microbiology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Navindra Kumari Palanisamy
- Institute of Medical Molecular Biotechnology (IMMB), Faculty of Medicine, Universiti Teknologi MARA (UiTM), Sungai Buloh Campus, Selangor, Malaysia
- Department of Medical Microbiology & Parasitology, Faculty of Medicine, Universiti Teknologi MARA (UiTM), Sungai Buloh Campus, Selangor, Malaysia
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Jamil Al-Obaidi MM, Desa MNM. Understanding the mechanisms underlying the disruption of the blood-brain barrier in parasitic infections. J Neurosci Res 2024; 102. [PMID: 38284852 DOI: 10.1002/jnr.25288] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 11/16/2023] [Accepted: 12/09/2023] [Indexed: 01/30/2024]
Abstract
Parasites have a significant impact on the neurological, cognitive, and mental well-being of humans, with a global population of over 1 billion individuals affected. The pathogenesis of central nervous system (CNS) injury in parasitic diseases remains limited, and prevention and control of parasitic CNS infections remain significant areas of research. Parasites, encompassing both unicellular and multicellular organisms, have intricate life cycles and possess the ability to infect a diverse range of hosts, including the human population. Parasitic illnesses that impact the central and peripheral nervous systems are a significant contributor to morbidity and mortality in low- to middle-income nations. The precise pathways through which neurotropic parasites infiltrate the CNS by crossing the blood-brain barrier (BBB) and cause neurological harm remain incompletely understood. Investigating brain infections caused by parasites is closely linked to studying neuroinflammation and cerebral impairment. The exact molecular and cellular mechanisms involved in this process remain incomplete, but understanding the exact mechanisms could provide insight into their pathogenesis and potentially reveal novel therapeutic targets. This review paper explores the underlying mechanisms involved in the development of neurological disorders caused by parasites, including parasite-derived elements, host immune responses, and modifications in tight junctions (TJs) proteins.
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Affiliation(s)
- Mazen M Jamil Al-Obaidi
- University of Technology and Applied Sciences, Rustaq College of Education, Science Department (Biology Unit), Rrustaq, Sultante of Oman
| | - Mohd Nasir Mohd Desa
- Department of Biomedical Sciences, Faculty of Medicine & Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
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Salawudeen A, Raji YE, Jibo GG, Desa MNM, Neoh HM, Masri SN, Di Gregorio S, Jamaluddin TZMT. Epidemiology of multidrug-resistant Klebsiella pneumoniae infection in clinical setting in South-Eastern Asia: a systematic review and meta-analysis. Antimicrob Resist Infect Control 2023; 12:142. [PMID: 38062531 PMCID: PMC10704709 DOI: 10.1186/s13756-023-01346-5] [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] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 11/26/2023] [Indexed: 12/18/2023] Open
Abstract
The rising prevalence of multidrug-resistant (MDR) and extended-spectrum beta lactamase-resistant (ESBL) Klebsiella pneumoniae (K. pneumoniae) is an important global public health challenge. This threat is even more pertinent in clinical settings. Morbidity and mortality associated with this condition are alarming particularly in the developing regions of the world. A comprehensive evaluation of the epidemiology of this phenomenon will assist towards the global effort of reducing its burden. So, this systematic review and meta-analysis was conducted to evaluate the epidemiology of MDR K. pneumoniae in South-Eastern Asia (SEA). The study was done under the PRISMA guidelines and was preceded by the development of a priori protocol. The protocol was then registered in PROSPERO-the public registry for systematic reviews. Seven important outcomes which include the assessment of the overall MDR K. pneumoniae prevalence were designed to be evaluated. A literature search was carried out in five selected electronic databases and 4389 were screened. Of these articles, 21 studies that met the eligibility criteria were included in the review. Relevant data were extracted from the included studies. By conducting a quality effect meta-analysis, the pooled prevalence for MDR and ESBL K. pneumoniae in SEA was estimated at 55% (CI 9-96) and 27% (CI 32-100) respectively. The review also identified ESBL genes types of allodemic situations occurring mostly in respiratory tract infections. The high prevalence of MDR and ESBL K. pneumoniae in this subregion is highly significant and of both public health and clinical relevance. Overall, the findings of this review will assist in the effective prevention and control of this threat in SEA.
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Affiliation(s)
- Adamu Salawudeen
- Department of Medical Microbiology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, Serdang, Malaysia
- Department of Microbiology, Faculty of Science, Gombe State University, Tudun Wada, Gombe, 760214, Gombe State, Nigeria
| | - Yakubu Egigogo Raji
- Department of Pathology, Clinical Microbiology Unit, College of Health Sciences, Ibrahim Badamasi Babangida University Lapai, Lapai, 911101, Nigeria
| | - Garba Gidandawa Jibo
- Department of Medical Microbiology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, Serdang, Malaysia
- Department of Microbiology, Faculty of Life Sciences, Kebbi State University of Science and Technology, Aliero, 863104, Nigeria
| | - Mohd Nasir Mohd Desa
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, Serdang, Malaysia
| | - Hui-Min Neoh
- UKM Medical Molecular Biology Institute (UMBI), Universiti Kebangsaan Malaysia, Jalan Ya'acob Latiff, Bandar Tun Razak, 56000, Kuala Lumpur, Malaysia
| | - Siti Norbaya Masri
- Department of Medical Microbiology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, Serdang, Malaysia
- Department of Medical Microbiology, Hospital Sultan Abdul Aziz Shah, Universiti Putra Malaysia, 43400, Serdang, Malaysia
| | - Sabrina Di Gregorio
- Instituto de Investigaciones en Bacteriologia y Virologia Molecular (IBaViM), Facultad de Farmacia y Bioquimica, Universidad de Buenos Aires, Postal Code 1113, Buenos Aires, Argentina
- CONICET, National Scientific and Technical Research Council - Argentina, Postal Code 1425, Buenos Aires, Argentina
| | - Tengku Zetty Maztura Tengku Jamaluddin
- Department of Medical Microbiology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, Serdang, Malaysia.
- Infection Control Unit, Department of Medical Microbiology, Hospital Sultan Abdul Aziz Shah, Universiti Putra Malaysia, 43400, Serdang, Malaysia.
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Jamil Al-Obaidi MM, Desa MNM. A review of the mechanisms of blood-brain barrier disruption during COVID-19 infection. J Neurosci Res 2023; 101:1687-1698. [PMID: 37462109 DOI: 10.1002/jnr.25232] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 06/20/2023] [Accepted: 07/06/2023] [Indexed: 09/10/2023]
Abstract
Coronaviruses are prevalent in mammals and birds, including humans and bats, and they often spread through airborne droplets. In humans, these droplets then interact with angiotensin-converting enzyme 2 (ACE2) and transmembrane serine protease 2 (TMPRSS2), which are the main receptors for the SARS-CoV-2 virus. It can infect several organs, including the brain. The blood-brain barrier (BBB) is designed to maintain the homeostatic neural microenvironment of the brain, which is necessary for healthy neuronal activity, function, and stability. It prevents viruses from entering the brain parenchyma and does not easily allow chemicals to pass into the brain while assisting numerous compounds in exiting the brain. The purpose of this review was to examine how COVID-19 influences the BBB along with the mechanisms that indicate the BBB's deterioration. In addition, the cellular mechanism through which SARS-CoV-2 causes BBB destruction by binding to ACE2 was evaluated and addressed. The mechanisms of the immunological reaction that occurs during COVID-19 infection that may contribute to the breakdown of the BBB were also reviewed. It was discovered that the integrity of the tight junction (TJs), basement membrane, and adhesion molecules was damaged during COVID-19 infection, which led to the breakdown of the BBB. Therefore, understanding how the BBB is disrupted by COVID-19 infection will provide an indication of how the SARS-CoV-2 virus is able to reach the central nervous system (CNS). The findings of this research may help in the identification of treatment options for COVID-19 that can control and manage the infection.
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Affiliation(s)
- Mazen M Jamil Al-Obaidi
- Biology Unit, Science Department, Rustaq College of Education, University of Technology and Applied Sciences, Al-Rustaq, Oman
| | - Mohd Nasir Mohd Desa
- Department of Biomedical Sciences, Faculty of Medicine & Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
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Amesho KTT, Chinglenthoiba C, Samsudin MSAB, Lani MN, Pandey A, Desa MNM, Suresh V. Microplastics in the environment: An urgent need for coordinated waste management policies and strategies. J Environ Manage 2023; 344:118713. [PMID: 37567004 DOI: 10.1016/j.jenvman.2023.118713] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 07/11/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023]
Abstract
Microplastics (MPs) have become a prevalent environmental concern, exerting detrimental effects on marine and terrestrial ecosystems, as well as human health. Addressing this urgent issue necessitates the implementation of coordinated waste management policies and strategies. In this study, we present a comprehensive review focusing on key results and the underlying mechanisms associated with microplastics. We examine their sources and pathways, elucidate their ecological and human health impacts, and evaluate the current state of waste management policies. By drawing upon recent research and pertinent case studies, we propose a range of practical solutions, encompassing enhanced recycling and waste reduction measures, product redesign, and innovative technological interventions. Moreover, we emphasize the imperative for collaboration and cooperation across sectors and jurisdictions to effectively tackle this pressing environmental challenge. The findings of this study contribute to the broader understanding of microplastics and provide valuable insights for policymakers, researchers, and stakeholders alike.
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Affiliation(s)
- Kassian T T Amesho
- Institute of Environmental Engineering, National Sun Yat-Sen University, Kaohsiung, 804, Taiwan; Center for Emerging Contaminants Research, National Sun Yat-Sen University, Kaohsiung, 804, Taiwan; The International University of Management, Centre for Environmental Studies, Main Campus, Dorado Park Ext 1, Windhoek, Namibia; Destinies Biomass Energy and Farming Pty Ltd, P.O. Box 7387, Swakopmund, Namibia.
| | - Chingakham Chinglenthoiba
- School of Materials Science and Engineering, National Institute of Technology Calicut, Kozhikode, India; Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore
| | - Mohd S A B Samsudin
- Faculty of Fisheries and Food Science, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia; Microplastic Research Interest Group (MRIG), Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia
| | - Mohd Nizam Lani
- Faculty of Fisheries and Food Science, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia; Microplastic Research Interest Group (MRIG), Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia.
| | - Ashutosh Pandey
- Institute for Water and Wastewater Technology, Durban University of Technology, 19 Steve Biko Road, Durban 4000, South Africa; Department of Biotechnology, Faculty of Life Science and Technology, AKS University, Satna, Madhya Pradesh, 485001, India.
| | - Mohd Nasir Mohd Desa
- Halal Products Research Institute, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia; Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia
| | - Valiyaveettil Suresh
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore.
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Al-Haroni H, Muthanna A, Nasir Mohd Desa M, Azzani M. Immunisation coverage and its determinants among Rohingya refugee children in Malaysia. Aust J Gen Pract 2023; 52:712-719. [PMID: 37788693 DOI: 10.31128/ajgp-01-23-6676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
BACKGROUND AND OBJECTIVES The displacement of populations due to humanitarian emergencies has an adverse impact on the global elimination of vaccine-preventable diseases. However, the level of immunisation coverage among Rohingya refugee children remains unknown. Therefore, this study investigated immunisation coverage and its determinants among Rohingya refugee children in Malaysia. METHOD A cross-sectional study was conducted from September to November 2020 among the guardians of 243 Rohingya refugee children studying under the sponsorship of the King Salman Humanitarian Aid and Relief Center, Malaysia. RESULTS Among the 243 children, 90 (37%) were unimmunised, 147 (60.5%) were partially immunised and only 6 (2.5%) were fully immunised. The country of child's birth, the child's age and access to healthcare services were significantly associated with unimmunisation (all P<0.05). DISCUSSION This study found low immunisation coverage among Rohingya refugee children in Malaysia. Given the low level of coverage, a public health intervention, such as a vaccination program, for this refugee population is necessary.
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Affiliation(s)
- Hanan Al-Haroni
- MBBCh, Master of Public Health, PhD candidate, Department of Community Medicine, Faculty of Medicine, Bioscience and Nursing, MAHSA (Malaysian Allied Health Sciences Academy) University, Bandar Saujana Putra, Selangor, Malaysia
| | - AbdulRahman Muthanna
- PhD, Postdoctoral Researcher, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Mohd Nasir Mohd Desa
- PhD, Associate Professor, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Meram Azzani
- PhD, Senior Lecturer, Department of Public Health Medicine, Faculty of Medicine, Universiti Teknologi MARA, Sungai Buloh@Campus, Selangor, Malaysia; Consultant, Centre of Occupational Safety, Health and Wellbeing, Universiti@Teknologi MARA, Kampus Puncak Alam, Selangor, Malaysia
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Abdul Rahman NA, Mohd Desa MN, Masri SN, Taib NM, Sulaiman N, Hazman H, John J. The Molecular Approaches and Challenges of Streptococcus pneumoniae Serotyping for Epidemiological Surveillance in the Vaccine Era. Pol J Microbiol 2023; 72:103-115. [PMID: 37314355 DOI: 10.33073/pjm-2023-023] [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] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 05/09/2023] [Indexed: 06/15/2023] Open
Abstract
Streptococcus pneumoniae (pneumococcus) belongs to the Gram-positive cocci. This bacterium typically colonizes the nasopharyngeal region of healthy individuals. It has a distinct polysaccharide capsule - a virulence factor allowing the bacteria to elude the immune defense mechanisms. Consequently, it might trigger aggressive conditions like septicemia and meningitis in immunocompromised or older individuals. Moreover, children below five years of age are at risk of morbidity and mortality. Studies have found 101 S. pneumoniae capsular serotypes, of which several correlate with clinical and carriage isolates with distinct disease aggressiveness. Introducing pneumococcal conjugate vaccines (PCV) targets the most common disease-associated serotypes. Nevertheless, vaccine selection pressure leads to replacing the formerly dominant vaccine serotypes (VTs) by non-vaccine types (NVTs). Therefore, serotyping must be conducted for epidemiological surveillance and vaccine assessment. Serotyping can be performed using numerous techniques, either by the conventional antisera-based (Quellung and latex agglutination) or molecular-based approaches (sequetyping, multiplex PCR, real-time PCR, and PCR-RFLP). A cost-effective and practical approach must be used to enhance serotyping accuracy to monitor the prevalence of VTs and NVTs. Therefore, dependable pneumococcal serotyping techniques are essential to precisely monitor virulent lineages, NVT emergence, and genetic associations of isolates. This review discusses the principles, associated benefits, and drawbacks of the respective available conventional and molecular approaches, and potentially the whole genome sequencing (WGS) to be directed for future exploration.
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Affiliation(s)
- Nurul Asyikin Abdul Rahman
- 1Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
- 2School of Biology, Faculty of Applied Sciences, Universiti Teknologi MARA, Kuala Pilah, Malaysia
| | - Mohd Nasir Mohd Desa
- 1Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | - Siti Norbaya Masri
- 3Department of Medical Microbiology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | - Niazlin Mohd Taib
- 3Department of Medical Microbiology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | - Nurshahira Sulaiman
- 1Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | - Hazmin Hazman
- 1Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | - James John
- 4Department of Medical Laboratory Technology, School of Allied Health Science, Sathyabama Institute of Science and Technology, Chennai, India
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Zohari Z, Barkham T, Mohamad Maswan N, Chen SL, Muthanna A, Lee KW, Mohd Desa MN, Azmai MNA, Sither Joseph NM, Amin-Nordin S. Fish-associated Streptococcus agalactiae ST283: first human cases reported from Malaysia. J Med Microbiol 2023; 72. [PMID: 37389575 DOI: 10.1099/jmm.0.001729] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/01/2023] Open
Abstract
In South East Asia, Streptococcus agalactiae ST283 causes sepsis in healthy adults. Raw freshwater fish consumption is the only known risk factor. These two case reports are the first from Malaysia. Although they cluster with Singapore ST283, the epidemiology is complicated by the flow of people and fish across borders.
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Affiliation(s)
- Zahira Zohari
- Department of Medicine, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Timothy Barkham
- Department of Laboratory Medicine, Tan Tock Seng Hospital, 308433, Singapore
| | | | - Swaine Lin Chen
- Infectious Diseases Translational Research Programme, Department of Medicine, Division of Infectious Diseases, Yong Loo Lin School of Medicine, National University of Singapore, 1E Kent Ridge Road, NUHS Tower Block, 119228, Singapore
- Laboratory of Bacterial Genomics, Genome Institute of Singapore, 60 Biopolis Street, 138672, Singapore
| | - AbdulRahman Muthanna
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Kai Wei Lee
- Department of Medical Microbiology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Mohd Nasir Mohd Desa
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Mohammad Noor Amal Azmai
- Aquatic Animal Health and Therapeutics Laboratory, Institute of Bioscience, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
- Department of Biology, Faculty of Science, Universiti Putra Malaysia, 43400,Serdang, Selangor, Malaysia
| | - Narcisse Mary Sither Joseph
- Department of Medical Microbiology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Syafinaz Amin-Nordin
- Hospital Sultan Abdul Aziz Shah,Universiti Putra Malaysia, Persiaran MARDI-UPM, 43400, Serdang, Selangor, Malaysia
- Department of Medical Microbiology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
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Muthanna A, Desa MNM, Alsalemi W, Liyana Abd Aziz NA, Dzaraly ND, Baharin NHZ, Aziz NA, Ali MM, Nor LAM, Ismail Z, Ahmad NH, Shan CH, Azmai MNA, Amin-Nordin S. Phenotypic and genotypic comparison of pathogenic group B Streptococcus isolated from human and cultured tilapia (Oreochromis species) in Malaysia. Comp Immunol Microbiol Infect Dis 2023; 97:101993. [PMID: 37167694 DOI: 10.1016/j.cimid.2023.101993] [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] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 04/22/2023] [Accepted: 05/04/2023] [Indexed: 05/13/2023]
Abstract
Group B Streptococcus (GBS) is a major cause of several infectious diseases in humans and fish. This study was conducted to compare human and fish-derived GBS in terms of their antimicrobial susceptibility, serotype, virulence and pili genes and sequence type (ST), and to determine whether there is a potential linkage of zoonotic transmission in Malaysia. GBS isolated from humans and fish had similar phenotypic characteristics and differed in virulence gene profile, antimicrobial susceptibility, serotype and sequence type. Fish GBS isolates had lower genetic diversity and higher antibiotic susceptibility than human isolates. We report a rare detection of the potentially fish-adapted ST283 in human GBS isolates. Both human and fish ST283 shared several phenotypic and genotypic features, including virulence and pilus genes and antimicrobial susceptibility, illustrating the value of monitoring GBS within the One Health scope. In this study, two human GBS ST283 isolates belonging to the variant common in fish hosts were identified, raising awareness of the zoonotic potential between the different species in Malaysia.
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Affiliation(s)
- AbdulRahman Muthanna
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia.
| | - Mohd Nasir Mohd Desa
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia
| | - Wardah Alsalemi
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia
| | - Nur Aimi Liyana Abd Aziz
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia
| | - Nurul Diana Dzaraly
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia
| | - Nurul Hana Zainal Baharin
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia
| | - Nur Afiza Aziz
- Department of Pathology, Sultanah Aminah Hospital, Johor Bahru, Johor, Malaysia
| | - Marlindawati Mohd Ali
- Department of Pathology, Tuanku Ja'afar Seremban Hospital, Seremban, Negeri Sembilan, Malaysia
| | | | - Zalina Ismail
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Cheras, Kuala Lumpur, Malaysia
| | - Nur Hanani Ahmad
- Department of Pathology, Sungai Buloh Hospital, Sungai Buloh, Selangor, Malaysia
| | - Chua Hui Shan
- Department of Pathology, Melaka General Hospital, Melaka, Malaysia
| | - Mohammad Noor Amal Azmai
- Department of Biology, Faculty of Science, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia; Aquatic Animal Health and Therapeutics Laboratory, Institute of Bioscience, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia
| | - Syafinaz Amin-Nordin
- Department of Medical Microbiology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia; Department of Medical Microbiology, Sultan Abdul Aziz Shah Hospital, Universiti Putra Malaysia, Persiaran MARDI - UPM, 43400, Selangor, Malaysia.
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13
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Junaidi NSSA, Shakrin NNSM, Desa MNM, Yunus WMZW. Dissemination Pattern of Hospital-Acquired Methicillin-Resistant Staphylococcus aureus and Community-Acquired MRSA Isolates from Malaysian Hospitals: A Review from a Molecular Perspective. Malays J Med Sci 2023; 30:26-41. [PMID: 37102054 PMCID: PMC10125240 DOI: 10.21315/mjms2023.30.2.3] [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] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Accepted: 01/06/2022] [Indexed: 04/28/2023] Open
Abstract
The global emergence of methicillin-resistant Staphylococcus aureus (MRSA) that unsusceptible to a wide selection of antimicrobial agents and any newly introduced antimicrobial over the past decades has triggered more extensive holistic measures to put an end to this situation. Molecular surveillance of MRSA clones is important to understand their evolutionary dynamics for investigating outbreaks, propagating precautionary measures, as well as planning for appropriate treatment. This review includes peer-reviewed reports on the molecular characterisation of clinical Staphylococcus aureus isolates within Malaysian hospitals from year 2008 to 2020. This work highlights the molecular clones of hospital-acquired MRSA (HA-MRSA) and community-acquired MRSA (CA-MRSA) isolates from Malaysian hospitals, with description on their ever-changing pattern. Among HA-MRSA, the ST22-t032-SCCmec IV MRSA clone was reported to supplant the previous dominating clone, ST239-t037-SCCmec III. Meanwhile, ST30, ST772, ST6 and ST22 were repeatedly detected in CA-MRSA, however, none of the strains became predominant. Future in-depth study on molecular epidemiology of MRSA clone is essential for the investigation of the extent of the clonal shift, especially in Malaysia.
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Affiliation(s)
| | - Nik Noorul Shakira Mohamed Shakrin
- Faculty of Medicine and Defence Health, Universiti Pertahanan Nasional Malaysia, Kuala Lumpur, Malaysia
- Centre for Tropicalization, Universiti Pertahanan Nasional Malaysia, Kuala Lumpur, Malaysia
| | - Mohd Nasir Mohd Desa
- Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Selangor, Malaysia
- Laboratory of Halal Science Research, Halal Products Research Institute, Universiti Putra Malaysia, Selangor, Malaysia
| | - Wan Md Zin Wan Yunus
- Centre for Tropicalization, Universiti Pertahanan Nasional Malaysia, Kuala Lumpur, Malaysia
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14
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Sultana S, Azlan A, Desa MNM, Mahyudin NA. Multiplex platforms in biosensor based analytical approaches: Opportunities and challenges for the speciation of animal species in food chain. Food Control 2023. [DOI: 10.1016/j.foodcont.2023.109727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
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15
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Ain Syaqirah Sapian N, Aidilfitri Mohamad Roslan M, Mohd Hashim A, Nasir Mohd Desa M, Halim M, Noorzianna Abdul Manaf Y, Wasoh H. Differentiation of lard from other animal fats based on n-Alkane profiles using chemometric analysis. Food Res Int 2023; 164:112332. [PMID: 36737925 DOI: 10.1016/j.foodres.2022.112332] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 12/06/2022] [Accepted: 12/09/2022] [Indexed: 12/15/2022]
Abstract
Adulteration of lard with other fats and oils in food production affects many areas including economics, religion, and health. Previous studies discriminated lard based on major components of fats, i.e. triglycerides and fatty acids. This study aimed to differentiate lard and other animal fats (beef, chicken and mutton fat) based on n-alkane profiles established by gas chromatography-mass spectrometry (GC-MS). Principal Component Analysis (PCA) and Hierarchical Clustering Analysis (HCA) were able to initiate clustering of lard and other animal fats. Good result was obtained using Random Forest (RF) and Partial Least Squares-Discriminant Analysis (PLS-DA). Statistical models propose tetracosane (C24) as a potential n-alkane marker and it was found that C24 was the major alkane with composition of 15.72% (GC-MS) of total alkanes identified. Based on this finding, more interesting study may potentially be explored for the interest of various fats and oils consumers in vast applications especially using chemometrics analysis.
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Affiliation(s)
- Nur Ain Syaqirah Sapian
- Halal Products Research Institute, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Muhamad Aidilfitri Mohamad Roslan
- Halal Products Research Institute, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Amalia Mohd Hashim
- Halal Products Research Institute, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Mohd Nasir Mohd Desa
- Halal Products Research Institute, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Murni Halim
- Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Yanty Noorzianna Abdul Manaf
- Faculty of Food Science and Nutrition, Universiti Malaysia Sabah, Jalan UMS, 88400 Kota Kinabalu, Sabah, Malaysia
| | - Helmi Wasoh
- Halal Products Research Institute, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
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16
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Shamsi S, Abdul Ghafor AAH, Norjoshukrudin NH, Ng IMJ, Abdullah SNS, Sarchio SNE, Md Yasin F, Abd Gani S, Mohd Desa MN. Stability, Toxicity, and Antibacterial Potential of Gallic Acid-Loaded Graphene Oxide (GAGO) Against Methicillin-Resistant Staphylococcus aureus (MRSA) Strains. Int J Nanomedicine 2022; 17:5781-5807. [PMCID: PMC9719714 DOI: 10.2147/ijn.s369373] [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] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 11/03/2022] [Indexed: 12/05/2022] Open
Abstract
Background The impetuous usage of antibiotics has led to the perpetual rise of methicillin-resistant Staphylococcus aureus (MRSA), which has garnered the interest of potential drug alternatives, including nanomaterials. Purpose The present study investigates the stability, toxicity, and antibacterial potential of gallic acid-loaded graphene oxide (GAGO) on several MRSA strains. Methods The stability of a synthesized and characterized GAGO was monitored in different physiological media. The toxicity profile of GAGO was evaluated in 3T3 murine fibroblast cells and the embryonic zebrafish model. The antibacterial activity of GAGO against MRSA, methicillin-susceptible S. aureus (MSSA), and community-acquired MRSA; with or without Panton-valentine leucocidin gene (MRSA-pvl+ and MRSA-pvl-) was investigated through disk diffusion, CFU counting method, time-kill experiment, and high-resolution transmission electron microscopy (HRTEM) observation. Results A stable GAGO nanocomposite has shown an improved toxicity profile in 3T3 murine fibroblast cells and zebrafish embryos, besides exhibiting normal ROS levels than graphene oxide (GO) and GA (gallic acid). The nanocomposite inhibited the growth of all bacterial strains employed. The effectiveness of the GAGO nanocomposite was comparable to cefoxitin (CFX), at ≥150 µg/mL in MRSA and MSSA. GAGO exhibited a significantly delayed response towards MRSA-pvl+ and MRSA-pvl-, with increased inhibition following 8 to 24 h of exposure, while comparable activity to native GA was only achieved at 24 h. Meanwhile, for MRSA and MSSA, GAGO had a comparable activity with native GA and GO as early as 2 h of exposure. HRTEM observation further reveals that GAGO-exposed cells were membrane compromised. Conclusion In summary, the present study indicates the antibacterial potential of GAGO against MRSA strains, but further study is warranted to understand the mechanism of action of GAGO and its resistance in MRSA strains.
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Affiliation(s)
- Suhaili Shamsi
- Laboratory of Animal Biochemistry and Biotechnology, Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Selangor, 43400, Malaysia,Correspondence: Suhaili Shamsi, Laboratory of Animal Biochemistry and Biotechnology, Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Selangor, 43400, Malaysia, Tel +603-9769 7964, Fax +603-9769 7590, Email
| | - Ahmad Ashraful Hadi Abdul Ghafor
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor, 43400, Malaysia
| | - Nur Hazwani Norjoshukrudin
- Laboratory of Animal Biochemistry and Biotechnology, Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Selangor, 43400, Malaysia
| | - Ida May Jen Ng
- Laboratory of Animal Biochemistry and Biotechnology, Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Selangor, 43400, Malaysia
| | - Siti Nur Sharmila Abdullah
- Laboratory of Animal Biochemistry and Biotechnology, Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Selangor, 43400, Malaysia
| | - Seri Narti Edayu Sarchio
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor, 43400, Malaysia
| | - Faizah Md Yasin
- Department of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang, Selangor, 43400, Malaysia,Institute of Nanoscience and Nanotechnology (ION2), Universiti Putra Malaysia, Serdang, Selangor, 43400, Malaysia
| | - Shafinaz Abd Gani
- Laboratory of Animal Biochemistry and Biotechnology, Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Selangor, 43400, Malaysia
| | - Mohd Nasir Mohd Desa
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor, 43400, Malaysia
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17
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Mohamad N, Azizan NI, Mokhtar NFK, Mustafa S, Mohd Desa MN, Hashim AM. Future perspectives on aptamer for application in food authentication. Anal Biochem 2022; 656:114861. [PMID: 35985482 DOI: 10.1016/j.ab.2022.114861] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 08/10/2022] [Accepted: 08/11/2022] [Indexed: 11/17/2022]
Abstract
Food fraudulence and food contamination are major concerns, particularly among consumers with specific dietary, cultural, lifestyle, and religious requirements. Current food authentication methods have several drawbacks and limitations, necessitating the development of a simpler, more sensitive, and rapid detection approach for food screening analysis, such as an aptamer-based biosensor system. Although the use of aptamer is growing in various fields, aptamer applications for food authentication are still lacking. In this review, we discuss the limitations of existing food authentication technologies and describe the applications of aptamer in food analyses. We also project several potential targets or marker molecules to be targeted in the SELEX process. Finally, this review highlights the drawbacks of current aptamer technologies and outlines the potential route of aptamer selection and applications for successful food authentication. This review provides an overview of the use of aptamer in food research and its potential application as a molecular reporter for rapid detection in food authentication process. Developing databases to store all biochemical profiles of food and applying machine learning algorithms against the biochemical profiles are urged to accelerate the identification of more reliable biomarker molecules as aptamer targets for food authentication.
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Affiliation(s)
- Nornazliya Mohamad
- Halal Products Research Institute, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Nur Inani Azizan
- Halal Products Research Institute, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Nur Fadhilah Khairil Mokhtar
- Halal Products Research Institute, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia; Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Shuhaimi Mustafa
- Halal Products Research Institute, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia; Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Mohd Nasir Mohd Desa
- Halal Products Research Institute, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia; Faculty of Medicine and Health Science, Universiti Putra Malaysia, 43400, UPM, Serdang, Selangor, Malaysia
| | - Amalia Mohd Hashim
- Halal Products Research Institute, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia; Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia.
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18
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Mokhtar NFK, Imran SZ, Han MG, Leong MC, Mohd Desa MN, Raja Nhari RMH, Mohd Zaki NN, Yusof YA, Mustafa S, Mohd Hashim A. Next Generation Sequencing-based DNA metabarcoding for animal species profiling in fish feed. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2022; 39:1185-1194. [PMID: 35617471 DOI: 10.1080/19440049.2022.2077458] [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] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The expansion of worldwide aquaculture has been accompanied by extensive growth in the fish feed industry. However, improper labelling of many commercially available fish feeds has raised security and safety concerns over the species' origin of the ingredients. The inclusion of ruminants-derived ingredients in fish feed is prohibited according to EU legislation while porcine inclusion in fish feed has been a great concern among Muslim farmers. In contrast to the limited species that could be simultaneously determined using multiplex PCR, this study utilised Next Generation Sequencing-based DNA metabarcoding assay to determine the compositional profiles of animal species in fish feed samples in a more holistic manner. In relation to the religious issue associated with porcine-derived ingredients in fish feed, this study firstly aimed to determine the sensitivity of the methods in profiling fish feed adulterated with porcine blood and muscle tissues. Next, 10 commercially available fish feed samples were analysed. As a result, a detection limit of as low as 3% (w/w) porcine muscle and blood in the laboratory-prepared fish feed was obtained. The analysis of 10 commercial fish feeds shows surprising findings: 50% of the feeds contain Sus scrofa and 80% contain Bos taurus, a ruminant. Only one commercial fish feed was found to be solely composed of marine species. This study shows that commercial fish feeds sold in Malaysia contain undesirable animal species, and emphasises the need for accurate and legally enforced labelling of mammalian species in fish feed products.
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Affiliation(s)
- Nur Fadhilah Khairil Mokhtar
- Halal Products Research Institute, Putra Infoport, Universiti Putra Malaysia, Serdang, Malaysia.,Konsortium Institut Halal IPT Malaysia (KIHIM), Pusat Pentadbiran Kerajaan Persekutuan, Putrajaya, Malaysia
| | - Siti Zaharah Imran
- Halal Products Research Institute, Putra Infoport, Universiti Putra Malaysia, Serdang, Malaysia
| | - Ming Gan Han
- GeneSEQ Sdn Bhd, Bandar Baru Bukit Beruntung, Malaysia.,Lab-Ind Resources Sdn Bhd, Rawang, Malaysia
| | - Mun Chun Leong
- GeneSEQ Sdn Bhd, Bandar Baru Bukit Beruntung, Malaysia.,Lab-Ind Resources Sdn Bhd, Rawang, Malaysia
| | - Mohd Nasir Mohd Desa
- Halal Products Research Institute, Putra Infoport, Universiti Putra Malaysia, Serdang, Malaysia.,Konsortium Institut Halal IPT Malaysia (KIHIM), Pusat Pentadbiran Kerajaan Persekutuan, Putrajaya, Malaysia.,Faculty of Medicine and Health Science, Universiti Putra Malaysia, Serdang, Malaysia
| | | | - Nor Nadiha Mohd Zaki
- Halal Products Research Institute, Putra Infoport, Universiti Putra Malaysia, Serdang, Malaysia.,Konsortium Institut Halal IPT Malaysia (KIHIM), Pusat Pentadbiran Kerajaan Persekutuan, Putrajaya, Malaysia
| | - Yus Aniza Yusof
- Halal Products Research Institute, Putra Infoport, Universiti Putra Malaysia, Serdang, Malaysia.,Faculty of Engineering, Universiti Putra Malaysia, Serdang, Malaysia
| | - Shuhaimi Mustafa
- Halal Products Research Institute, Putra Infoport, Universiti Putra Malaysia, Serdang, Malaysia.,Konsortium Institut Halal IPT Malaysia (KIHIM), Pusat Pentadbiran Kerajaan Persekutuan, Putrajaya, Malaysia
| | - Amalia Mohd Hashim
- Halal Products Research Institute, Putra Infoport, Universiti Putra Malaysia, Serdang, Malaysia.,Konsortium Institut Halal IPT Malaysia (KIHIM), Pusat Pentadbiran Kerajaan Persekutuan, Putrajaya, Malaysia.,Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Malaysia
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19
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Zainal Baharin NH, Khairil Mokhtar NF, Mohd Desa MN, Gopalsamy B, Mohd Zaki NN, Yuswan MH, Muthanna A, Dzaraly ND, Abbasiliasi S, Mohd Hashim A, Abdullah Sani MS, Mustafa S. The characteristics and roles of antimicrobial peptides as potential treatment for antibiotic-resistant pathogens: a review. PeerJ 2022; 9:e12193. [PMID: 35003909 PMCID: PMC8679955 DOI: 10.7717/peerj.12193] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 03/12/2021] [Accepted: 08/31/2021] [Indexed: 01/26/2023] Open
Abstract
The emergence of antibiotic-resistant bacteria has become a significant and ever-increasing threat to global public health, increasing both morbidity and mortality rates, and the financial burden on health services. Infection by drug-resistant bacteria is anticipated to contribute to the demise of almost 10 million people by the year 2050 unless a competent and effective response is devised to engage with this issue. The emergence and spread of resistance are commonly caused by the excessive or inappropriate use of antibiotics and substandard pharmaceuticals. It arises when pathogens adapt to different conditions and develop self-defence mechanisms. Currently, novel antimicrobial peptides (AMPs) have been reported to be the sole cure for some clinical cases of infectious diseases such as sepsis and skin infections, although these agents may, on occasion, require administration together with an adjunctive low-dose antibiotic. Although AMPs are a promising alternative form of anti-microbial therapy and easily applied in the medical sector, they still have limitations that should not be taken lightly. Hence, this review explores the characteristics, advantages and disadvantages of AMPs for their potential in treating antibiotic-resistant pathogens.
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Affiliation(s)
- Nurul Hana Zainal Baharin
- Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia.,Laboratory of Halal Science Research, Halal Products Research Institute, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Nur Fadhilah Khairil Mokhtar
- Laboratory of Halal Science Research, Halal Products Research Institute, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Mohd Nasir Mohd Desa
- Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia.,Laboratory of Halal Science Research, Halal Products Research Institute, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Banulata Gopalsamy
- Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Nor Nadiha Mohd Zaki
- Laboratory of Halal Science Research, Halal Products Research Institute, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Mohd Hafis Yuswan
- Laboratory of Halal Science Research, Halal Products Research Institute, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - AbdulRahman Muthanna
- Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Nurul Diana Dzaraly
- Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Sahar Abbasiliasi
- Laboratory of Halal Science Research, Halal Products Research Institute, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Amalia Mohd Hashim
- Laboratory of Halal Science Research, Halal Products Research Institute, Universiti Putra Malaysia, Serdang, Selangor, Malaysia.,Department of Microbiology, Faculty of Biotechnology and Biomolecular Science, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Muhamad Shirwan Abdullah Sani
- International Institute for Halal Research and Training (INHART), International Islamic University Malaysia, Gombak, Selangor, Malaysia
| | - Shuhaimi Mustafa
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Science, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
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20
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Tasrip NA, Mohd Desa MN, Khairil Mokhtar NF, Sajali N, Mohd Hashim A, Ali ME, Kqueen CY. Rapid porcine detection in gelatin-based highly processed products using loop mediated isothermal amplification. J Food Sci Technol 2021; 58:4504-4513. [PMID: 34629514 DOI: 10.1007/s13197-020-04932-2] [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] [Subscribe] [Scholar Register] [Revised: 11/23/2020] [Accepted: 12/01/2020] [Indexed: 01/14/2023]
Abstract
Low DNA concentration recovered from highly processed products such as gelatin and gelatin-based products renders difficulty in detecting porcine contamination using conventional PCR techniques. We documented here a porcine-specific loop-mediated isothermal amplification (LAMP) to identify porcine traces in gelatin products. The porcine-specific primers were designed according to mitochondrial DNA of Cytochrome b gene sequence. Here we used two different reaction mixtures for LAMP assay (GENIE and MYRM) against the same DNA samples extracted from gelatin products and porcine-specific primers to detect the presence of porcine DNA. The porcine-specific primers were shown to be specific only to Sus scrofa against 14 DNA of other meat species. The analytical sensitivity of the LAMP assay for porcine DNA detection is 1 pg/µL using both GENIE (within 30 m) and MYRM (within 60 m) reaction mixtures. Analysis against 32 samples of gelatin products showed that five samples were found to contain porcine DNA; two samples out of six gelatin powder samples and three gelatin capsule samples out of nine. Out of these five positive samples, three were not labeled containing porcine gelatin. Overall, LAMP assay in this study showed an excellent specificity, sensitivity and rapidity in detection of porcine DNA in gelatin products. Supplementary Information The online version contains supplementary material available at (10.1007/s13197-020-04932-2).
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Affiliation(s)
- Nor Asmara Tasrip
- Halal Products Research Institute, Universiti Putra Malaysia, 43400 Serdang, Selangor Malaysia
| | - Mohd Nasir Mohd Desa
- Halal Products Research Institute, Universiti Putra Malaysia, 43400 Serdang, Selangor Malaysia.,Ministry of Higher Education, Konsortium Institut Halal IPT Malaysia, 62200 Putrajaya, Malaysia.,Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor Malaysia
| | - Nur Fadhilah Khairil Mokhtar
- Halal Products Research Institute, Universiti Putra Malaysia, 43400 Serdang, Selangor Malaysia.,Ministry of Higher Education, Konsortium Institut Halal IPT Malaysia, 62200 Putrajaya, Malaysia
| | - Nurhayatie Sajali
- Halal Products Research Institute, Universiti Putra Malaysia, 43400 Serdang, Selangor Malaysia.,School of Engineering and Technology, University College of Technology Sarawak, 96000 Sibu, Sarawak Malaysia
| | - Amalia Mohd Hashim
- Ministry of Higher Education, Konsortium Institut Halal IPT Malaysia, 62200 Putrajaya, Malaysia.,Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor Malaysia
| | - Md Eaqub Ali
- Modesto City Schools, 426 Locust St., Modesto, CA 95351-2699 USA.,Nanotechnology and Catalysis Research Center, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Cheah Yoke Kqueen
- Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor Malaysia
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21
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Lister AJJ, Le CF, Cheah ESG, Desa MNM, Cleary DW, Clarke SC. Serotype distribution of invasive, non-invasive and carried Streptococcus pneumoniae in Malaysia: a meta-analysis. Pneumonia (Nathan) 2021; 13:9. [PMID: 34030731 PMCID: PMC8147341 DOI: 10.1186/s41479-021-00086-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 01/19/2021] [Accepted: 04/12/2021] [Indexed: 11/13/2022] Open
Abstract
Background Pneumococcal pneumonia is the leading cause of under-five mortality globally. The surveillance of pneumococcal serotypes is therefore vital for informing pneumococcal vaccination policy and programmes. Pneumococcal conjugate vaccines (PCVs) have been available as an option in the private healthcare setting and beginning December 2020, PCV10 was incorporated as part of routine national immunisation programme (NIP) in Malaysia. We searched existing literature on pneumococcal serotype distribution across Malaysia to provide an overall view of this distribution before the implementation of PCV10. Methods Online databases (PubMed, Ovid MEDLINE and Scopus), reference lists of articles identified, and grey literature (Malaysian Ministry of Health website, WHO website) were systematically searched for relevant literature on pneumococcal serotype distribution across Malaysia up to 10th November 2020. No lower date limit was set to maximise the number of target reports returned. Results of serotypes were split by age categories, including ≤5 years, > 5 years and unreported for those that did not specify. Results The search returned 18 relevant results, with a total of 2040 isolates. The most common serotypes across all disease types were 19F (n = 313, 15.3% [95%CI: 13.8–17.0]), 23F (n = 166, 8.1% [95%CI: 7.0–9.4]), 14 (n = 166, 8.1% [95%CI: 7.0–9.4]), 6B (n = 163, 8.0% [95%CI: 6.9–9.2]) and 19A (n = 138, 6.8% [95%CI: 5.8–7.9]). Conclusion Four of the most common serotypes across all isolate sources in Malaysia are covered by PCV10, while PCV13 provides greater serotype coverage in comparison to PCV10. There is still a need for surveillance studies, particularly those investigating serotypes in children under 5 years of age, to monitor vaccine effectiveness and pneumococcal population dynamic following implementation of PCV10 into routine immunisation.
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Affiliation(s)
- Alex J J Lister
- Faculty of Medicine and Institute for Life Sciences, Infectious Disease Epidemiology Group, University of Southampton, Mailpoint 814, Level C, Sir Henry Wellcome Laboratories, South Block, University Hospital Southampton Foundation NHS Trust, Southampton, SO16 6YD, UK
| | - Cheng Foh Le
- School of Biosciences, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, 43500, Semenyih, Selangor, Malaysia
| | - Eddy Seong Guan Cheah
- Department of Biological Science, Faculty of Science, Universiti Tunku Abdul Rahman (UTAR), Kampar Campus, 31900, Kampar, Perak, Malaysia
| | - Mohd Nasir Mohd Desa
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - David W Cleary
- Faculty of Medicine and Institute for Life Sciences, Infectious Disease Epidemiology Group, University of Southampton, Mailpoint 814, Level C, Sir Henry Wellcome Laboratories, South Block, University Hospital Southampton Foundation NHS Trust, Southampton, SO16 6YD, UK.,NIHR Southampton Biomedical Research Centre, University Hospital Southampton Foundation NHS Trust, Southampton, UK
| | - Stuart C Clarke
- Faculty of Medicine and Institute for Life Sciences, Infectious Disease Epidemiology Group, University of Southampton, Mailpoint 814, Level C, Sir Henry Wellcome Laboratories, South Block, University Hospital Southampton Foundation NHS Trust, Southampton, SO16 6YD, UK. .,NIHR Southampton Biomedical Research Centre, University Hospital Southampton Foundation NHS Trust, Southampton, UK. .,Global Health Research Institute, University of Southampton, Southampton, UK. .,Institute for Research, Development and Innovation, International Medical University, Kuala Lumpur, Malaysia.
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22
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Dzaraly ND, Mohd Desa MN, Muthanna A, Masri SN, Taib NM, Suhaili Z, Sulaiman N, Baharin NHZ, Shuan CY, Ariffin Z, Rahman NIA, Mohd Rani F, Palanisamy NK, Soh TST, Abdullah FH. Antimicrobial susceptibility, serotype distribution, virulence profile and molecular typing of piliated clinical isolates of pneumococci from east coast, Peninsular Malaysia. Sci Rep 2021; 11:8220. [PMID: 33859249 PMCID: PMC8050075 DOI: 10.1038/s41598-021-87428-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Accepted: 03/30/2021] [Indexed: 12/14/2022] Open
Abstract
Pilus has been recently associated with pneumococcal pathogenesis in humans. The information regarding piliated isolates in Malaysia is scarce, especially in the less developed states on the east coast of Peninsular Malaysia. Therefore, we studied the characteristics of pneumococci, including the piliated isolates, in relation to antimicrobial susceptibility, serotypes, and genotypes at a major tertiary hospital on the east coast of Peninsular Malaysia. A total of 100 clinical isolates collected between September 2017 and December 2019 were subjected to serotyping, antimicrobial susceptibility test, and detection of pneumococcal virulence and pilus genes. Multilocus sequence typing (MLST) and phylogenetic analysis were performed only for piliated strains. The most frequent serotypes were 14 (17%), 6A/B (16%), 23F (12%), 19A (11%), and 19F (11%). The majority of isolates were resistant to erythromycin (42%), tetracycline (37%), and trimethoprim-sulfamethoxazole (24%). Piliated isolates occurred in a proportion of 19%; 47.3% of them were multidrug-resistant (MDR) and a majority had serotype 19F. This study showed ST236 was the most predominant sequence type (ST) among piliated isolates, which was related to PMEN clone Taiwan19F-14 (CC271). In the phylogenetic analysis, the piliated isolates were grouped into three major clades supported with 100% bootstrap values. Most piliated isolates belonged to internationally disseminated clones of S. pneumoniae, but pneumococcal conjugate vaccines (PCVs) have the potential to control them.
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Affiliation(s)
- Nurul Diana Dzaraly
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia
| | - Mohd Nasir Mohd Desa
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia.
| | - AbdulRahman Muthanna
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia
| | - Siti Norbaya Masri
- Department of Medical Microbiology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia
| | - Niazlin Mohd Taib
- Department of Medical Microbiology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia
| | - Zarizal Suhaili
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia
- School of Animal Science, Aquatic Science and Environment, Faculty of Bioresources and Food Industry, Universiti Sultan Zainal Abidin, Besut Campus, Besut, Terengganu, Malaysia
| | - Nurshahira Sulaiman
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia
| | - Nurul Hana Zainal Baharin
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia
| | - Cheah Yun Shuan
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia
| | - Zarina Ariffin
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia
| | - Nor Iza A Rahman
- Faculty of Medicine, Universiti Sultan Zainal Abidin, Kuala Terengganu, Terengganu, Malaysia
| | - Farahiyah Mohd Rani
- Faculty of Medicine, Universiti Sultan Zainal Abidin, Kuala Terengganu, Terengganu, Malaysia
| | - Navindra Kumari Palanisamy
- Department of Medical Microbiology and Parasitology, Faculty of Medicine, Universiti Teknologi MARA (UiTM), Sungai Buloh Campus, Jalan Hospital, Sungai Buloh, Selangor, Malaysia
| | - Tuan Suhaila Tuan Soh
- Department of Pathology, Sungai Buloh Hospital, Ministry of Health Malaysia, Jalan Hospital, Sungai Buloh, Selangor, Malaysia
| | - Fatimah Haslina Abdullah
- Department of Pathology, Sultanah Nur Zahirah Hospital, Ministry of Health Malaysia, Jalan Sultan Mahmud, Kuala Terengganu, Terengganu, Malaysia
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23
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Sajali N, Wong SC, Abu Bakar S, Khairil Mokhtar NF, Manaf YN, Yuswan MH, Mohd Desa MN. Analytical approaches of meat authentication in food. Int J Food Sci Technol 2020. [DOI: 10.1111/ijfs.14797] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Nurhayatie Sajali
- School of Engineering and Technology University College of Technology Sarawak Sibu Sarawak Malaysia
- Halal Products Research Institute Universiti Putra Malaysia Serdang Selangor Darul Ehsan Malaysia
| | - Sie Chuong Wong
- Department of Basic Science and Engineering Faculty of Agriculture and Food Sciences UPM Bintulu Sarawak Campus Bintulu Sarawak Malaysia
| | - Suhaili Abu Bakar
- Department of Biomedical Science Faculty of Medicine and Health Sciences Universiti Putra Malaysia Serdang Selangor Darul Ehsan Malaysia
| | - Nur Fadhilah Khairil Mokhtar
- Halal Products Research Institute Universiti Putra Malaysia Serdang Selangor Darul Ehsan Malaysia
- Konsortium Institut Halal IPT Malaysia (KIHIM), Ministry of Higher Education Malaysia, Federal Government Administrative Centre Putrajaya Malaysia
| | - Yanty Noorzianna Manaf
- Halal Products Research Institute Universiti Putra Malaysia Serdang Selangor Darul Ehsan Malaysia
- Konsortium Institut Halal IPT Malaysia (KIHIM), Ministry of Higher Education Malaysia, Federal Government Administrative Centre Putrajaya Malaysia
| | - Mohd Hafis Yuswan
- Halal Products Research Institute Universiti Putra Malaysia Serdang Selangor Darul Ehsan Malaysia
- Konsortium Institut Halal IPT Malaysia (KIHIM), Ministry of Higher Education Malaysia, Federal Government Administrative Centre Putrajaya Malaysia
| | - Mohd Nasir Mohd Desa
- Halal Products Research Institute Universiti Putra Malaysia Serdang Selangor Darul Ehsan Malaysia
- Department of Biomedical Science Faculty of Medicine and Health Sciences Universiti Putra Malaysia Serdang Selangor Darul Ehsan Malaysia
- Konsortium Institut Halal IPT Malaysia (KIHIM), Ministry of Higher Education Malaysia, Federal Government Administrative Centre Putrajaya Malaysia
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24
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Dzaraly ND, Muthanna A, Mohd Desa MN, Taib NM, Masri SN, Rahman NIA, Suhaili Z, Tuan Soh TS, Abdullah FH. Pilus islets and the clonal spread of piliated Streptococcus pneumoniae: A review. Int J Med Microbiol 2020; 310:151449. [PMID: 33092697 DOI: 10.1016/j.ijmm.2020.151449] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Revised: 08/17/2020] [Accepted: 08/24/2020] [Indexed: 12/11/2022] Open
Abstract
Pneumococci are a common cause of severe infections, such as otitis media, pneumonia, meningitis and bacteremia. Pili are detected in a small proportion of pneumococcal population, but these structures have recently been associated with bacterial virulence in humans. Therefore, the epidemiological relationships between pneumococcal pili, serotype and antimicrobial resistance are of interest. This study aims to discuss the virulence contribution of the Streptococcus pneumoniae pili and the epidemiological relationships among the pilus genes, antimicrobial resistance trends, regional serotypes and genotypic variations. Previous reports have characterized the pneumococcal pilus islet as a clonal feature in the pneumococcal serotypes that are covered by the pneumococcal conjugate vaccine (PCV), including serotypes 19A, 19F, 23F and 7F. Many of the pneumococcal molecular epidemiology network (PMEN) clones are piliated isolates that are also strongly associated with a high frequency of multidrug resistance. Most of these piliated pneumococcal isolates belong to a few clonal complexes (CC), such as CC320, CC199, CC271, CC191 and CC156. Additional molecular epidemiology and genomic studies, particularly whole genome sequence analysis (WGS), are needed to develop an in-depth understanding of the piliated pneumococcal isolates.
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Affiliation(s)
- Nurul Diana Dzaraly
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| | - AbdulRahman Muthanna
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| | - Mohd Nasir Mohd Desa
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia.
| | - Niazlin Mohd Taib
- Department of Medical Microbiology and Parasitology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| | - Siti Norbaya Masri
- Department of Medical Microbiology and Parasitology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| | - Nor Iza A Rahman
- Faculty of Medicine, Universiti Sultan Zainal Abidin, 21400, Kuala Terengganu, Terengganu, Malaysia
| | - Zarizal Suhaili
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia; School of Animal Sciences, Faculty of Bioresources and Food Industry, Universiti Sultan Zainal Abidin, Besut Campus, 22200, Besut, Terengganu, Malaysia; East Coast Environmental Research Institute, Universiti Sultan Zainal Abidin, Gong Badak Campus, 21300, Kuala Terengganu, Terengganu, Malaysia
| | - Tuan Suhaila Tuan Soh
- Department of Pathology, Sungai Buloh Hospital, Jalan Hospital, 47000, Sungai Buloh, Selangor, Malaysia
| | - Fatimah Haslina Abdullah
- Department of Pathology, Sultanah Nur Zahirah Hospital, Jalan Sultan Mahmud, 20400, Kuala Terengganu, Terengganu, Malaysia
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25
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Yuswan MH, A Jalil NH, Mohamad H, Keso S, Mohamad NA, Tengku Md Yusoff TS, Ismail NF, Abdul Manaf YN, Mohd Hashim A, Mohd Desa MN, Yusof YA, Mustafa S. Hydroxyproline determination for initial detection of halal-critical food ingredients (gelatin and collagen). Food Chem 2020; 337:127762. [PMID: 32777563 DOI: 10.1016/j.foodchem.2020.127762] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [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: 11/13/2019] [Revised: 04/07/2020] [Accepted: 08/02/2020] [Indexed: 10/23/2022]
Abstract
Gelatin and collagen are considered halal-critical ingredients as they are typically derived from either bovine or porcine animals. Current analytical methods for determining the sources of gelatin and collagen suffer from limitations in terms of robustness and false positives in peptide matching. Thus, the aim of this study was to investigate the utility of monitoring hydroxyproline, a signature amino acid for gelatin and collagen, for identifying potentially haram foodstuffs. To determine the hydroxyproline profiles among animal- and plant-based samples, one-way univariate analysis of variance followed by pair-wise comparison was used to establish statistical significance. Multivariate chemometric analysis through principal component analysis revealed a discrete distribution pattern among 59 samples due to hydroxyproline variability. Finally, inter- and intra-laboratory comparisons demonstrated the validity and robustness of hydroxyproline determination according to ISO 17025. Thus, this preliminary identification technique will aid the identification of potentially haram foodstuffs.
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Affiliation(s)
- Mohd Hafis Yuswan
- Laboratory of Halal Services, Halal Products Research Institute, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Consortium of Malaysia IPT Halal Institutes, Ministry of Higher Education, Complex E, Federal Government Administrative Centre, 62604 Putrajaya, Malaysia.
| | - Nurul Hanani A Jalil
- Laboratory of Halal Services, Halal Products Research Institute, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Haslina Mohamad
- Laboratory of Halal Services, Halal Products Research Institute, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Shamsidah Keso
- Laboratory of Halal Services, Halal Products Research Institute, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Nurhidayatul Asma Mohamad
- Laboratory of Halal Services, Halal Products Research Institute, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Tengku Shahrul Tengku Md Yusoff
- Laboratory of Halal Services, Halal Products Research Institute, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Nor Falahiah Ismail
- Laboratory of Halal Services, Halal Products Research Institute, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Yanty Noorzianna Abdul Manaf
- Laboratory of Halal Services, Halal Products Research Institute, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Consortium of Malaysia IPT Halal Institutes, Ministry of Higher Education, Complex E, Federal Government Administrative Centre, 62604 Putrajaya, Malaysia
| | - Amalia Mohd Hashim
- Laboratory of Halal Services, Halal Products Research Institute, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Consortium of Malaysia IPT Halal Institutes, Ministry of Higher Education, Complex E, Federal Government Administrative Centre, 62604 Putrajaya, Malaysia
| | - Mohd Nasir Mohd Desa
- Laboratory of Halal Services, Halal Products Research Institute, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Consortium of Malaysia IPT Halal Institutes, Ministry of Higher Education, Complex E, Federal Government Administrative Centre, 62604 Putrajaya, Malaysia
| | - Yus Aniza Yusof
- Laboratory of Halal Services, Halal Products Research Institute, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Department of Process and Food Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Consortium of Malaysia IPT Halal Institutes, Ministry of Higher Education, Complex E, Federal Government Administrative Centre, 62604 Putrajaya, Malaysia
| | - Shuhaimi Mustafa
- Laboratory of Halal Services, Halal Products Research Institute, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Consortium of Malaysia IPT Halal Institutes, Ministry of Higher Education, Complex E, Federal Government Administrative Centre, 62604 Putrajaya, Malaysia
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26
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Al Amin M, Mahfujur Rahman M, Razimi MSA, Chowdhury ZZ, Hussain MNM, Desa MNM. Screening of commercial meat products from supermarket chains for feline derivatives using SP-PCR-RLFP and lab-on-a-chip. J Food Compost Anal 2020; 92:103565. [PMID: 32546895 PMCID: PMC7282760 DOI: 10.1016/j.jfca.2020.103565] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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: 02/19/2019] [Revised: 06/03/2020] [Accepted: 06/07/2020] [Indexed: 11/19/2022]
Abstract
Determination of feline meat in food products is an important issue for social, health, economic and religious concern. Hence this paper documented the application of species specific polymerase chain reaction-restriction fragment length polymorphism (SP-PCR-RFLP) assay targeting a short-fragments (69 bp) of mitochondrial cytochrome b (cytb) gene to screen feline meat in commercial meat products using lab-on-a-chip. The SP-PCR assay proved its specificity theoretically and experimentally while testing with different common animal, aquatic and plant species of DNA. The feline specific (69 bp, 43- and 26-bp) characteristic molecular DNA pattern was observed by SP-PCR and RFLP analysis. For assay performance, it was tested in three different types of commercial dummy meat products such as frankfurters, nuggets and meatballs and digested with AluI-restriction enzyme. The highest sensitivity of the assay using lab-on-a-chip was as low as 0.1 pg or 0.01 % (w/w) in commercial dummy meat products. We have also applied this assay to screen three important commercial meat products of six different brand from six supermarket chains located at three different states of Malaysia. Thus total 378 samples were tested to validate the specificity, sensitivity, stability of the assay and utilization of it for commercial meat product screening.
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Affiliation(s)
- Md Al Amin
- Global Centre for Environmental Remediation (GCER), University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Md Mahfujur Rahman
- Islamic Business School, Universiti Utara Malaysia, 06010, Kedah, Malaysia
- Asian Halal Laboratory, School of Technology Management & Logistic, Universiti Utara, Malaysia, 06010, Kedah, Malaysia
- Halal Products Research Institute, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | | | - Zaira Zaman Chowdhury
- Nanotechnology and Catalysis Research Centre (NANOCAT), Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | | | - Mohd Nasir Mohd Desa
- Halal Products Research Institute, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
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Ezhumalai M, Muthanna A, Suhaili Z, Dzaraly ND, Amin-Nordin S, Amal MNA, Desa MNM. Multilocus Sequence Typing Analysis of Invasive and Non-Invasive Group B Streptococcus of Hospital Origin in Malaysia. Malays J Med Sci 2020; 27:134-138. [PMID: 32158353 PMCID: PMC7053542 DOI: 10.21315/mjms2020.27.1.14] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 01/16/2020] [Indexed: 11/17/2022] Open
Abstract
The aim of this study was to study the genotype of a hospital collection of Group B Streptococcus (GBS) from invasive and non-invasive sites. Fifty-one pre-characterised human of GBS were re-identified and further analysed by multilocus sequence typing (MLST) in relation to previously published serotypes. Fifteen sequence types (ST) were found with ST1 being the most predominant. ST1 was also associated with majority of the invasive isolates. The genotypic distribution patterns of GBS in this study were largely in agreement with previous reports from other countries indicating the tendency of certain genotypes to prevail in human infection settings.
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Affiliation(s)
- Menagah Ezhumalai
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Selangor, Malaysia
| | - AbdulRahman Muthanna
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Selangor, Malaysia
| | - Zarizal Suhaili
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Selangor, Malaysia.,School of Animal Sciences, Faculty of Bioresources and Food Industry, Universiti Sultan Zainal Abidin, Terengganu, Malaysia
| | - Nurul Diana Dzaraly
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Selangor, Malaysia
| | - Syafinaz Amin-Nordin
- Department of Medical Microbiology and Parasitology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Selangor, Malaysia
| | | | - Mohd Nasir Mohd Desa
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Selangor, Malaysia
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Neela VK, Azhari NN, Joseph N, Mimie NP, Ramli SNA, Mustapha NF, Ishak SN, Mohd-Taib FS, Yusof MA, Desa MNM, Bashiru G, Sekawi Z. An outbreak of leptospirosis among reserve military recruits, Hulu Perdik, Malaysia. Eur J Clin Microbiol Infect Dis 2019; 38:523-528. [PMID: 30680558 DOI: 10.1007/s10096-018-03450-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [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: 08/27/2018] [Accepted: 12/05/2018] [Indexed: 01/04/2023]
Abstract
Here, we investigated an outbreak of leptospirosis among reserve military recruits that occurred following a survival exercise in the Hulu Perdik forest within the Hulu Langat district, Kuala Lumpur, Malaysia. Blood samples from the 12 patients that presented symptoms for febrile illness on clinical examination were subjected to laboratory investigation, comprising Lepto IgM rapid test, IgM ELISA, and microscopic agglutination test (MAT). All these patients were interviewed for possible risk factors for leptospirosis. Rodent trapping and environmental sampling for possible isolation of leptospires in the outbreak site was performed. The isolated leptospires were genetically characterized and investigated for the potential epidemiological link with human leptospirosis. Among the 12 patients, two (2/12; 16.6%) were confirmed positive for leptospirosis by microscopic agglutination test (MAT with titers 400-800; serovar autumnalis and hardjobovis). Two Leptospira species from rodents (L. interrogans and L. borgpetersenii) and two from the environment (L. kmetyi and L. wolffii) were identified. The possible epidemiological link between human serovars and animal Leptospira species indicates rodents as the potential reservoir while the environment (soil and water) serves as a transmission route. This investigation highlights the robust presence of pathogenic leptospires on Malaysian environment and rodents which may present the risk of infection, especially among high-risk individuals. Hence, occupational risk individuals are cautioned to observe appropriate preventive measures including prophylaxis and seek immediate medical attention for any illness following similar activities.
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Affiliation(s)
- Vasantha Kumari Neela
- Department of Medical Microbiology and Parasitology, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia.
| | - Nurul Natasya Azhari
- Department of Medical Microbiology and Parasitology, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Narcisse Joseph
- Department of Medical Microbiology and Parasitology, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Noraini Philip Mimie
- Department of Medical Microbiology and Parasitology, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Siti Nur Alia Ramli
- Department of Medical Microbiology and Parasitology, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Nooreen Farzana Mustapha
- Infectious Disease Control Unit, Selangor State Health Department, Shah Alam, Selangor, Malaysia
| | - Siti Nabilah Ishak
- School of Environmental Sciences & Natural Resource, The National University of Malaysia, Bangi, Selangor, Malaysia
| | - Farah Shafawati Mohd-Taib
- School of Environmental Sciences & Natural Resource, The National University of Malaysia, Bangi, Selangor, Malaysia
| | - Muhammad Afif Yusof
- School of Biological Sciences, University Science Malaysia, Gelugor, Penang, Malaysia
| | - Mohd Nasir Mohd Desa
- Department of Biomedical Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Garba Bashiru
- Department of Veterinary Public Health and Preventive Medicine, Faculty of Veterinary Medicine, Usmanu Danfodiyo University, Sokoto, Sokoto, Nigeria
| | - Zamberi Sekawi
- Department of Medical Microbiology and Parasitology, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
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Mohd Amin NM, Enche Othman MI, Satiman EAFEN, Abdul Aziz NJ, Mohamed Rehan A, Shahdan IA, Md. Azahri NS, Mohd Desa MN, Yusof Hanafi HA. Effects of Virulence Factors On Streptococcus Pneumoniae in Vitro Growth. imjm 2018. [DOI: 10.31436/imjm.v17i1.841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Introduction: Streptococcus pneumoniae remains as a major causative agent for morbidity and mortality cases in the world. The pathogenicity of this bacterium is attributed to many virulence factors. These factors, though not all had been extensively investigated at the molecular level in various mutant studies. However, of these studies, none of them were using local Malaysian isolate. Materials and Methods: Therefore, to better understand the growth pattern of local mutants a growth curve study and optochin disk susceptibility test were conducted. Several virulence genes (i.e hyl, ugl, ccpA, nanA, and ply) were targeted for this local mutant construction. Pneumococcal mutants were constructed by employing genome-wide deletion technique using high throughput polymerase chain reaction (PCR). Linear knockout construct was established by fusing the kanamycin resistance protein encoding gene, aphA-3 with 1 Kb homologous sequence up and down stream of the respective targeted genes. The gene was knocked out by allelic replacement mechanism. Results: Glycosaminoglycan (GAG) gene cluster mutants (∆hyl- and ∆ugl-) took two days compared to 3 others to grow on brain heart infusion (BHI)-kanamycin agar plate following transformation. This indicated a variance in the mutant growth pattern. Therefore, a growth curve study was conducted to validate the previous observation. We report different time span of log phase in growth curve pattern of mutants relative to the wild type strain. Meanwhile, comparison of zone of inhibition using optochin disk showed non-identical inhibition diameter (≥ 14mm) corresponding to the wild type (14.3mm). Conclusion: The difference in growth pattern was attributed to nutritional role of certain gene.
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Sajali N, Wong SC, Hanapi UK, Abu Bakar Jamaluddin S, Tasrip NA, Mohd Desa MN. The Challenges of DNA Extraction in Different Assorted Food Matrices: A Review. J Food Sci 2018; 83:2409-2414. [DOI: 10.1111/1750-3841.14338] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2018] [Revised: 07/16/2018] [Accepted: 08/03/2018] [Indexed: 11/28/2022]
Affiliation(s)
- Nurhayatie Sajali
- School of Engineering and Technology; University College of Technology Sarawak; 868 Persiaran Brooke 96000 Sibu Sarawak Malaysia
- Halal Products Research Institute; Universiti Putra Malaysia; 43400 Serdang Selangor Darul Ehsan Malaysia
| | - Sie Chuong Wong
- Department of Basic Science and Engineering, Faculty of Agriculture and Food Sciences; Universiti Putra Malaysia Bintulu Sarawak Campus; P.O. Box 396, Nyabau Road 97008 Bintulu Sarawak Malaysia
| | - Ummi Kalthum Hanapi
- Halal Products Research Institute; Universiti Putra Malaysia; 43400 Serdang Selangor Darul Ehsan Malaysia
| | - Suhaili Abu Bakar Jamaluddin
- Department of Biomedical Science, Faculty of Medicine and Health Sciences; Universiti Putra Malaysia; 43400, Selangor Darul Ehsan Malaysia
| | - Nor Asmara Tasrip
- Halal Products Research Institute; Universiti Putra Malaysia; 43400 Serdang Selangor Darul Ehsan Malaysia
| | - Mohd Nasir Mohd Desa
- Halal Products Research Institute; Universiti Putra Malaysia; 43400 Serdang Selangor Darul Ehsan Malaysia
- Department of Biomedical Science, Faculty of Medicine and Health Sciences; Universiti Putra Malaysia; 43400, Selangor Darul Ehsan Malaysia
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Zulkifli NF, Wan SJ, Neela VK, Chee HY, Masri SN, Jamil Al-Obaidi MM, Mohd Desa MN. Detection of Leptospira Species in Environmental Samples by Amplification of 16s rRNA and rpoβ Genes. SAINS MALAYS 2018. [DOI: 10.17576/jsm-2018-4708-18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Al-Obaidi MMJ, Desa MNM. Mechanisms of Blood Brain Barrier Disruption by Different Types of Bacteria, and Bacterial-Host Interactions Facilitate the Bacterial Pathogen Invading the Brain. Cell Mol Neurobiol 2018; 38:1349-1368. [PMID: 30117097 DOI: 10.1007/s10571-018-0609-2] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 08/06/2018] [Indexed: 12/19/2022]
Abstract
This review aims to elucidate the different mechanisms of blood brain barrier (BBB) disruption that may occur due to invasion by different types of bacteria, as well as to show the bacteria-host interactions that assist the bacterial pathogen in invading the brain. For example, platelet-activating factor receptor (PAFR) is responsible for brain invasion during the adhesion of pneumococci to brain endothelial cells, which might lead to brain invasion. Additionally, the major adhesin of the pneumococcal pilus-1, RrgA is able to bind the BBB endothelial receptors: polymeric immunoglobulin receptor (pIgR) and platelet endothelial cell adhesion molecule (PECAM-1), thus leading to invasion of the brain. Moreover, Streptococcus pneumoniae choline binding protein A (CbpA) targets the common carboxy-terminal domain of the laminin receptor (LR) establishing initial contact with brain endothelium that might result in BBB invasion. Furthermore, BBB disruption may occur by S. pneumoniae penetration through increasing in pro-inflammatory markers and endothelial permeability. In contrast, adhesion, invasion, and translocation through or between endothelial cells can be done by S. pneumoniae without any disruption to the vascular endothelium, upon BBB penetration. Internalins (InlA and InlB) of Listeria monocytogenes interact with its cellular receptors E-cadherin and mesenchymal-epithelial transition (MET) to facilitate invading the brain. L. monocytogenes species activate NF-κB in endothelial cells, encouraging the expression of P- and E-selectin, intercellular adhesion molecule 1 (ICAM-1), and Vascular cell adhesion protein 1 (VCAM-1), as well as IL-6 and IL-8 and monocyte chemoattractant protein-1 (MCP-1), all these markers assist in BBB disruption. Bacillus anthracis species interrupt both adherens junctions (AJs) and tight junctions (TJs), leading to BBB disruption. Brain microvascular endothelial cells (BMECs) permeability and BBB disruption are induced via interendothelial junction proteins reduction as well as up-regulation of IL-1α, IL-1β, IL-6, TNF-α, MCP-1, macrophage inflammatory proteins-1 alpha (MIP1α) markers in Staphylococcus aureus species. Streptococcus agalactiae or Group B Streptococcus toxins (GBS) enhance IL-8 and ICAM-1 as well as nitric oxide (NO) production from endothelial cells via the expression of inducible nitric oxide synthase (iNOS) enhancement, resulting in BBB disruption. While Gram-negative bacteria, Haemophilus influenza OmpP2 is able to target the common carboxy-terminal domain of LR to start initial interaction with brain endothelium, then invade the brain. H. influenza type b (HiB), can induce BBB permeability through TJ disruption. LR and PAFR binding sites have been recognized as common routes of CNS entrance by Neisseria meningitidis. N. meningitidis species also initiate binding to BMECs and induces AJs deformation, as well as inducing specific cleavage of the TJ component occludin through the release of host MMP-8. Escherichia coli bind to BMECs through LR, resulting in IL-6 and IL-8 release and iNOS production, as well as resulting in disassembly of TJs between endothelial cells, facilitating BBB disruption. Therefore, obtaining knowledge of BBB disruption by different types of bacterial species will provide a picture of how the bacteria enter the central nervous system (CNS) which might support the discovery of therapeutic strategies for each bacteria to control and manage infection.
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Affiliation(s)
- Mazen M Jamil Al-Obaidi
- Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia.
| | - Mohd Nasir Mohd Desa
- Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia.
- Halal Products Research Institute, Universiti Putra Malaysia, Serdang, Selangor, Malaysia.
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Far FE, Al-Obaidi MMJ, Desa MNM. Efficacy of modified Leeming-Notman media in a resazurin microtiter assay in the evaluation of in-vitro activity of fluconazole against Malassezia furfur ATCC 14521. J Mycol Med 2018; 28:486-491. [PMID: 29753721 DOI: 10.1016/j.mycmed.2018.04.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [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: 01/16/2018] [Revised: 04/11/2018] [Accepted: 04/12/2018] [Indexed: 01/17/2023]
Abstract
BACKGROUND Malassezia furfur is lipodependent yeast like fungus that causes superficial mycoses such as pityriasis versicolor and dandruff. Nevertheless, there are no standard reference methods to perform susceptibility test of Malassezia species yet. AIMS Therefore, in this study, we evaluated the optimized culture medium for growth of this lipophilic yeast using modified leeming-Notman agar and colorimetric resazurin microtiter assay to assess antimycotic activity of fluconazole against M. furfur. RESULTS The result showed that these assays were more adjustable for M. furfur with reliable and reproducible MIC end-point, by confirming antimycotic activity of fluconazole with MIC of 2μg/ml. CONCLUSION We conclude that this method is considered as the rapid and effective susceptibility testing of M. furfur with fluconazole antifungal activity.
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Affiliation(s)
- F E Far
- Department of Biomedical Science, Faculty of Medicine & Health Sciences, Universiti Putra, 43400 UPM Serdang, Selangor, Malaysia
| | - M M J Al-Obaidi
- Department of Biomedical Science, Faculty of Medicine & Health Sciences, Universiti Putra, 43400 UPM Serdang, Selangor, Malaysia
| | - M N M Desa
- Department of Biomedical Science, Faculty of Medicine & Health Sciences, Universiti Putra, 43400 UPM Serdang, Selangor, Malaysia; Halal Products Research Institute, Universiti Putra, 43400 UPM Serdang, Selangor, Malaysia.
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Suhaili Z, Rafee P'A, Mat Azis N, Yeo CC, Nordin SA, Abdul Rahim AR, Al-Obaidi MMJ, Mohd Desa MN. Characterization of resistance to selected antibiotics and Panton-Valentine leukocidin-positive Staphylococcus aureus in a healthy student population at a Malaysian University. Germs 2018; 8:21-30. [PMID: 29564245 DOI: 10.18683/germs.2018.1129] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [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: 11/09/2017] [Revised: 12/17/2017] [Accepted: 12/25/2017] [Indexed: 11/08/2022]
Abstract
Introduction This study aims to assess the antimicrobial susceptibility profiles of Staphylococcus aureus strains isolated from university students and to determine the prevalence of constitutive and inducible clindamycin resistance, the latter being able to cause therapeutic failure due to false in vitro clindamycin susceptibility. Methods S. aureus strains were isolated from the nasal swabs of 200 health sciences students of a Malaysian university. Twelve classes of antibiotics were used to evaluate the antimicrobial susceptibility profiles with the macrolide-lincosamide-streptogramin B (MLSB) phenotype for inducible clindamycin resistance determined by the double-diffusion test (D-test). Carriage of resistance and virulence genes was performed by PCR on S. aureus isolates that were methicillin resistant, erythromycin resistant and/or positive for the leukocidin gene, pvl (n=15). Results Forty-nine isolates were viable and identified as S. aureus with four of the isolates characterized as methicillin-resistant S. aureus (MRSA; 2.0%). All isolates were susceptible to the antibiotics tested except for penicillin (resistance rate of 49%), erythromycin (16%), oxacillin (8%), cefoxitin (8%) and clindamycin (4%). Of the eight erythromycin-resistant isolates, iMLSB was identified in five isolates (three of which were also MRSA). The majority of the erythromycin-resistant isolates harbored the msrA gene (four iMLSB) with the remaining iMLSB isolate harboring the ermC gene. Conclusion The presence of MRSA isolates which are also iMLSB in healthy individuals suggests that nasal carriage may play a role as a potential reservoir for the transmission of these pathogens.
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Affiliation(s)
- Zarizal Suhaili
- MSc, BSc, Dip. Med. Lab Tech. Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, School of Animal Science, Faculty of Bioresources and Food Industry, Universiti Sultan Zainal Abidin, Besut Campus, 22200 Besut, Terengganu, Malaysia
| | - Putri 'Amira Rafee
- MSc, Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Norhidayah Mat Azis
- MSc, Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Chew Chieng Yeo
- PhD, Faculty of Medicine, Universiti Sultan Zainal Abidin, Medical Campus, Kuala Terengganu, Terengganu, Malaysia
| | - Syafinaz Amin Nordin
- MPath, Department of Medical Microbiology and Parasitology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Abdul Rachman Abdul Rahim
- PhD, Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Mazen M Jamil Al-Obaidi
- PhD, Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Mohd Nasir Mohd Desa
- PhD, Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Laboratory of Halal Science Research, Halal Products Research Institute, Universiti Putra Malaysia, 43400 Serdang, Malaysia
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35
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Hossain MM, Ali ME, Hamid SBA, Asing, Mustafa S, Desa MNM, Zaidul I. Targeting double genes in multiplex PCR for discriminating bovine, buffalo and porcine materials in food chain. Food Control 2017. [DOI: 10.1016/j.foodcont.2016.08.008] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Sutthiruk N, Botti M, Considine J, Driscoll A, Hutchinson A, Malathum K, Cucunawangsih C, Wiwing V, Puspitasari V, Shanmugakani RK, Akeda Y, Kodera T, Santanirand P, Tomono K, Yamanaka T, Moriuchi H, Kitajima H, Horikoshi Y, Lavrinenko A, Azizov I, Tabriz N, Kozhamuratov M, Serbo Y, Yang D, Lee W, Bae IK, Lee JH, Lee H, Kim JO, Jeong SH, Lee K, Peremalo T, Madhavan P, Hamzah S, Than L, Wong EH, Desa MNM, Ng KP, Geronimo M, Tayzon MF, Maño MJ, Chow A, Hon PY, Win MK, Ang B, Leo YS, Chow A, Hon PY, See T, Ang B, Marin RA, de Sousa MA, Kieffer N, Nordmann P, Poirel L, Laochareonsuk W, Petyu S, Wanasitchaiwat P, Thana S, Bunyaphongphan C, Boonsomsuk W, Maneepongpermpoon P, Jamulitrat S, Sureshkumar D, Supraja K, Sharmila S, Cucunawangsih C, Setiawan B, Lumbuun N, Nakayama H, Ota T, Shirane N, Matuoka C, Kodama K, Ohtsuka M, Bacolcol SAA, Velmonte M, Alde A, Chavez K, Esteban AJ, Lee AJ, Hsieh TC, Shio-ShinJean, Huang HJ, Huang SJ, Huang YH, Cheng PC, Yu SF, Tsao SM, Lee YT, Li CF, Lu MC, Pruetpongpun N, Khawcharoenporn T, Damronglerd P, Suwantarat N, Apisarnthanarak A, Rutjanawech S, Cushinotto L, McBride P, Williams H, Liu H, Hang PT, Anh DPP, Le N, Khu D, Nguyen L, Castillo RB, Sureshkumar D, Gopalakrishnan R, Ramasubramanian V, Sreevidya S, Jayapradha R, Umetsu A, Noda T, Hashimoto K, Hayashi A, Kabashima M, Jadczak U, Elvelund K, Johnsen M, Borgen B, Lingaas E, Mao CH, Chang FC, Liu CP, Chao RH, Chang FC, Liu CP, Pawapotako J, Prasertpan C, Malaihuan W, Uirungroj P, Prasertpan C, Saenjum C, Ouirungrog T, Uirungroj P, Borrell S, Bass P, Worth L, Xian-li Z, Xiao-long L, Xue-hua Y, Wei R, Zeng ZX, Kong MY, Lai CKC, Lee SY, Tsang NC, O’Donoghue MM, Boost MV, Suen LKP, Siu GK, Mui KW, Lai CKC, Tsang DNC, Sato Y, Tateishi M, Mihashi M, Flor JP, Bautista M, De Roxas VJ, Vergara J, Añonuevo NA, Kwek M, Acuin J, Sanchez AJ, Bathan A, Jantan JB, Guek CC, Kian EC, Pirido PA, Aron NFBM, Estacio LM, Palana FA, Gracia M, Shamsuddin NSB, Castro KT, Baloria M, Adam FB, Wei Z, Fong PB, Kalisvar M, Chow A, Ang B, Chuang IJ, Yi-ChunCho, Chiu YF, Chen LC, Lin YC, Dong SX, Lee YC, Kuan HC, Lin HH, Chi CC, Lu CT, Chang FC, Liu CP, Ya-Fen T, Li-Hsiang S, Jien-Wei L, Chao H, ChangChien P, Chen W, Lai C, Ara L, Mowla SMN, Vashkar SMK, Chan WF, ChunYau MY, LingChong KK, OnLi T, Kaur R, Yan NP, Chiu GCS, Cheung CWY, Ching PTY, Ching RHC, Lam CHS, Kan CH, Lee SSY, Chen CP, Chan RFY, Leung AFY, Wong ILC, Lam SS, Chan QWL, Chan C, Kaur R, Nematian SSS, Palenik CJ, Askarian M, Nematian SSS, Palenik CJ, Hatam N, Askarian M, Nakamura I, Fujita H, Tsukimori A, Kobayashi T, Sato A, Fukushima S, Matsumoto T, Flor JP, Añonuevo NA, Bautista M, Vergara J, De Roxas VJ, Kwek M, Flor JP, Bautista M, Vergara J, De Roxas VJ, AndreiAñonuevo N, Kwek M, Ho YM, Kum JQ, Poh BF, Marimuthu K, Ang B, Liu TY, Chu SM, Chen HZ, Chen TC, Chen Y, Tsao YC, Skuntaniyom S, Malathum K, Tipluy P, Paengta S, wongsaen R, thanomphan S, Tariyo S, Thongchuea B, Khamfu P, Thanomphan S, Songtaweesin WN, Anugulruengkit S, Samransamruajkit R, Sosothikul D, Tansrijitdee O, Nakphunsung A, Srimuan P, Sophonphan J, ThanyaweePuthanakit, Payuk K, Picheansathian W, Viseskul N, DeNardo E, Leslie R, Cartner T, Barbosa L, Werner HP, Brill FHH, Kawagoe JY, De Nardo E, Wilson SE, Macinga D, Mays-Suko P, Duley C, Hang PT, Hang TTT, Hanh TTM, Gordon C, Sureshkumar D, Durairaj R, Rohit A, Saravanakumar S, Hemalatha J, Hirano R, Sakamoto Y, Yamamoto S, Tachibana N, Miura M, Hieda F, Sakai Y, Watanabe H, Velmonte M, Bacolcol SA, Alde A, Chavez K, Esteban AJ, Lee AJ, Chow A, Lim JW, Hon PY, Hein AA, Tin G, Lim V, Ang B, Chow A, Hein AA, Lim JW, Hon PY, Lim V, Tin G, Ang B, Chow A, Tin G, Hein AA, Lim V, Lim JW, Hon PY, Ang B, Chao HC, Yeh CY, Lo MF, Chao HC, Piwpong C, Rajborirug S, Preechawetchakul P, Pruekrattananapa Y, Sangsuwan T, Jamulitrat S, Wongsaen R, Paengta S, Nilchon N, Thanompan S, Tariyo S, Le N, Khu D, Kolesnichenko S, Azizov I, Lavrinenko A, Tishkambayev Y, Lavrinenko A, Azizov I, Tishkambayev Y, Alibecov A, Kolesnichenko S, Serbo Y, Nam Y, Park JH, Hong YJ, Kim TS, Park JS, Park KU, Kim EC, Aziegbemhin SA, Enabulele O, Tung YS, Chen AC, Huang SM, Yang YY, Wu LH, Lin CC, Chang FC, Liu CP, Lien TH, Chang JH, Huang YS, Chen YS, Saenjum C, Sirilun S, Ouirungrog T, Ouirungroj P, Trakulsomboon S, Prasajak P, Kwok MWN, Ng LSH, Wong LMT, Poon LSL, Lai MKL, Cheng HHS, Fong SK, Leung CFY, Hasegawa J, Shirakawa H, Wakai S, Mieno M, Hatakeyama S, Tateishi M, Mihashi M, Sato Y, Saenjum C, Deeudom M, Tharavichitkul P, Ouirungrog T, Ouirungroj P, Chinniah T, Tan J, Prabu K, Alam S, Wynn AK, Ahmad R, Sidek A, Samsuddin DA, Ajis N, Ahmad A, Magon S, Chu B, Kuang J, Gao Y, Wang S, Hao Y, Liu R, Li D, Wang H, Yan NP, Nishio H, Mori H, Morokuma Y, Yamada T, Kiyosuke M, Yasunaga S, Toyoda K, Shimono N, Babenko D, Turmuhambetova A, Cheşcă A, Toleman MA, Babenko D, Turmuhambetova A, Cheşcă A, Toleman MA, Babenko D, Turmuhambetova A, Azizov I, Cheşcă A, Toleman MA, Akhmaltdinova LL, Turmuhambetova A, Cheşcă A, Babenko D, Magsakay MA, Macatibag A, Tayzon MF, Lerios JK, Azizov I, Lavrineko A, Babenko D, Sheck E, Edelstein M, Liu TY, Li LY, Chan CW, Pan HC, Chen TC, Vanishakije W, Jaikampun W, Cheng PC, Huang HJ, Huang SJ, Huang YH, Li SY, Yu SF, Li JF, Wu YP, Lee YT, Lin CH, Chang PC, Tariyo S, Paengta S, Wongsaen R, Thanompan S, Skuntaniyom S, Malathum K, Sukkra S, Zaman K, Zaman SF, Zaman F, Aziz A, Faisal SB, Traskine M, Ruiz-Guiñazú J, Borys D, Zaman K, Zaman SF, Zaman F, Aziz A, Faisal SB, Traskine M, Ruiz-Guiñazú J, Borys D, Lam WWY, Chow M, Choy L, Kam J, Salleh SA, Yacob R, Yusof SR, Jalil NA, Flor JP, Añonuevo NA, Bautista M, De Roxas VJ, Vergara J, Millan ML, Kwek M, Acuin JL, Lee AJ, Velmonte MA, Bacolcol SAA, Alde A, Chavez K, Esteban AJ, Ting CI, Dissayasriroj S, Chinniah TR, Prabu K, Ahmad R, Magon S, DiniSuhaimi J, Mirasin A, Morni N, Chu B, Samsuddin A, Ahmad A, Sidek A, Ajis N, AbuBakar A, Shafiee A, Safar J, Yan NP, Annie L, Ling FY, Edna L, Kristine L, Shinomiya S, Yamamoto K, Kjiwara K, Yamaguchi M, Chow A, Tin G, Zhang W, Hon PY, Poh BF, Marimuthu K, Ang B, Chan MC, Wang CC, Huang SJ, Huang HJ, Yu SF, Huang HY, Cheng PC, Li JF, Lee YT, Lai CL, Lu MC, Kosol S, Sakolwirat W, Paepong P, Jansanga S, Jaisamoot P, Thongnuanual N, Srithong C, Somsakul S, Malathum K, Plongpunth S, Punpop M, Malathum P, Malathum K, Thanomphan S, Wongsaen R, Peautiwat K, boon kirdram N, Picheansathian W, Klunklin P, Samethadka G, Suzuki N, Asada H, Katayama M, Komano A, Sato A, Nakamura I, Watanabe H, Matsumoto T, Seo HK, Hwang JH, Shin MJ, Kim SY, Kim ES, Song KH, Kim HB, Un LS, Vong CI, Flor JP, Añonuevo NA, Bautista M, De Roxas VJ, Vergara J, Kwek M, Koh J, Agustinus S, Hassan RBA, Thinn YP, Ng B, Tun SP, Ha SMT, Xiaoting X, Li L, Chuang L, Niroshika AMC, Perera KAK, Fernando DKDG, Hemamala BR, Yeh CY, Chao HC, Yang HC, Chiu HJ, Shih YL, Chien YS, Lin WY, Pan CY, Chang YY, Yea CY, Chu MH, Lee LC, Chiu HJ, Shih YL, Yang HC, Yu-Hsiu L, Siao-Pei G, Pak-On L, Mei-Fe S, Jyh-Jou C, Yu-Hsiu L, Yong-Yuan C, Kuo SY, Lin YH, Zhang JS, Leung PO, Sie MF, Chen JJ, Chen YR, Lin YH, Chen YL, Taou CF, Chen HS, Tang HJ, Chen SY, Chen YY, Der Wang F, Shih TP, Chen CY, Chen SJ, Wu MC, Yang WJ, Chou ML, Yu ML, Li LC, Chu CW, Tsou WH, Wu WC, Cheng WC, Sun CC, Shih TP, Chen CY, Lu SH, Chen SJ, Yang HL, Lu CY, Yu ML, Li LC, Chu CW, Tsou WH, Wu WC, Cheng WC, Sun CC, Hirunprapakorn N, Malathum K, Apivanich S, Pornmee T, Beowsomboon C, Rajborirug S, Pruekrattananapa Y, Sangsuwan T, Jamulitrat S, Kumkoom I, Kasatpibal N, Chitreecheur J, Kasatpibal N, Whitney JD, Saokaew S, Kengkla K, Heitkemper MM, Apisarnthanarak A, Muntajit T, Apivanich S, Malathum K, Somsakul S, Phan HT, Dinh APP, Nguyen TTK. Abstracts from the 8th International Congress of the Asia Pacific Society of Infection Control (APSIC). Antimicrob Resist Infect Control 2017. [PMCID: PMC5333188 DOI: 10.1186/s13756-017-0176-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Shamsul BMT, Adamu MT, Mohd Desa MN, Khairani-Bejo S. Prevalence of Escherichia Coli O157:H7 and Enterobacteriaceae on Hands of Workers in Halal Cattle Abattoirs in Peninsular Malaysia. Malays J Med Sci 2016; 23:65-71. [PMID: 27904427 PMCID: PMC5101974 DOI: 10.21315/mjms2016.23.5.9] [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] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 07/25/2016] [Indexed: 10/20/2022] Open
Abstract
BACKGROUND Several occupational diseases of multiple origins are encountered among abattoir workers. Presence of indicator microorganisms (coliforms) on hands of workers can be used a gauge for hygienic practices. METHODS A cross-sectional study was performed to assess the prevalence of E.coli and enterobacteriaceae among Halal abattoir workers in some government halal abattoirs of Malaysia. A total of one hundred and sixty-five hand swab samples were collected from workers of Halal abattoirs in Malaysia. The samples were subjected to microbiological analysis for characterisation and serotyping. RESULTS The results have shown that no Escherichia coli O157:H7 was isolated on the hands of abattoir workers before and after work. However, a total prevalence of 9.7% was recorded for all samples during work. For non-O157:H7, total prevalence of 33.3% during work and 13% after work were obtained. High prevalence was recorded in sample taken during work from Tampin, Jasin and Kemaman (100% each) while low prevalence where observed in Shah Alam, Banting and Ipoh (20% each). CONCLUSIONS Based on the findings the hygienic practices of hand washing among the workers in few locations was found to be low especially after work.
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Affiliation(s)
- Bahri Mohd Tamrin Shamsul
- Department of Environmental and Occupational Health, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor
| | - Muhammad Tukur Adamu
- Department of Environmental and Occupational Health, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor
- Department of Microbiology, Faculty of Science, Gombe State University, PMB 127, Tudun Wada Gombe, Gombe State, Nigeria
| | - Mohd Nasir Mohd Desa
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor
| | - Siti Khairani-Bejo
- Department of Veterinary Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400 Serdang, Selangor
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Hossain MAM, Ali ME, Abd Hamid SB, Mustafa S, Mohd Desa MN, Zaidul ISM. Double Gene Targeting Multiplex Polymerase Chain Reaction-Restriction Fragment Length Polymorphism Assay Discriminates Beef, Buffalo, and Pork Substitution in Frankfurter Products. J Agric Food Chem 2016; 64:6343-6354. [PMID: 27501408 DOI: 10.1021/acs.jafc.6b02224] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Beef, buffalo, and pork adulteration in the food chain is an emerging and sensitive issue. Current molecular techniques to authenticate these species depend on polymerase chain reaction (PCR) assays involving long and single targets which break down under natural decomposition and/or processing treatments. This novel multiplex polymerase chain reaction-restriction fragment length polymorphism assay targeted two different gene sites for each of the bovine, buffalo, and porcine materials. This authentication ensured better security, first through a complementation approach because it is highly unlikely that both sites will be missing under compromised states, and second through molecular fingerprints. Mitochondrial cytochrome b and ND5 genes were targeted, and all targets (73, 90, 106, 120, 138, and 146 bp) were stable under extreme boiling and autoclaving treatments. Target specificity and authenticity were ensured through cross-amplification reaction and restriction digestion of PCR products with AluI, EciI, FatI, and CviKI-1 enzymes. A survey of Malaysian frankfurter products revealed rampant substitution of beef with buffalo but purity in porcine materials.
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Affiliation(s)
| | | | | | - Shuhaimi Mustafa
- Institute of Halal Products Research, Universiti Putra Malaysia , 43400 UPM Serdang, Selangor, Malaysia
| | - Mohd Nasir Mohd Desa
- Institute of Halal Products Research, Universiti Putra Malaysia , 43400 UPM Serdang, Selangor, Malaysia
| | - I S M Zaidul
- Deparment of Pharmaceutical Technology, Faculty of Pharmacy, International Islamic University , Kuantan 25200, Pahang, Malaysia
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Suhaili Z, Lean SS, Mohamad NM, Rachman ARA, Desa MNM, Yeo CC. Draft genome sequence of Staphylococcus aureus KT/312045, an ST1-MSSA PVL positive isolated from pus sample in East Coast Malaysia. Genom Data 2016; 9:111-2. [PMID: 27508119 PMCID: PMC4961218 DOI: 10.1016/j.gdata.2016.07.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Revised: 07/01/2016] [Accepted: 07/06/2016] [Indexed: 10/28/2022]
Abstract
Most of the efforts in elucidating the molecular relatedness and epidemiology of Staphylococcus aureus in Malaysia have been largely focused on methicillin-resistant S. aureus (MRSA). Therefore, here we report the draft genome sequence of the methicillin-susceptible Staphylococcus aureus (MSSA) with sequence type 1 (ST1), spa type t127 with Panton-Valentine Leukocidin (pvl) pathogenic determinant isolated from pus sample designated as KT/314250 strain. The size of the draft genome is 2.86 Mbp with 32.7% of G + C content consisting 2673 coding sequences. The draft genome sequence has been deposited in DDBJ/EMBL/GenBank under the accession number AOCP00000000.
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Affiliation(s)
- Zarizal Suhaili
- School of Animal Science, Faculty of Bioresources and Food Industry, Universiti Sultan Zainal Abidin, Besut Campus, 22200 Besut, Terengganu, Malaysia
| | - Soo-Sum Lean
- School of Animal Science, Faculty of Bioresources and Food Industry, Universiti Sultan Zainal Abidin, Besut Campus, 22200 Besut, Terengganu, Malaysia
| | - Noor Muzamil Mohamad
- School of Animal Science, Faculty of Bioresources and Food Industry, Universiti Sultan Zainal Abidin, Besut Campus, 22200 Besut, Terengganu, Malaysia
| | - Abdul R Abdul Rachman
- Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | - Mohd Nasir Mohd Desa
- Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | - Chew Chieng Yeo
- Faculty of Medicine, Universiti Sultan Zainal Abidin, Medical Campus, Kuala Terengganu, Malaysia
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Ng TS, Mohd Desa MN, Sandai D, Chong PP, Than LTL. Phylogenetic and Transcripts Profiling of Glucose Sensing Related Genes in Candida glabrata. Jundishapur J Microbiol 2015; 8:e25177. [PMID: 26855740 PMCID: PMC4735840 DOI: 10.5812/jjm.25177] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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: 11/09/2014] [Revised: 07/17/2015] [Accepted: 07/22/2015] [Indexed: 01/02/2023] Open
Abstract
Background: The sensing mechanism of glucose in Saccharomyces cerevisiae is well studied. However, such information is scarcely found in other yeast species such as Candida glabrata. Objectives: This study aimed to identify the glucose sensing pathway related genes of C. glabrata and to analyze the regulation pattern of these genes in response to different surrounding glucose concentrations through the quantitative real time polymerase chain reaction (qRT-PCR). Materials and Methods: Phylogenetic analysis was carried out on predicted amino acid sequences of C. glabrata and S. cerevisiae to compare their degree of similarity. In addition, the growth of C. glabrata in response to different amounts of glucose (0%, 0.01%, 0.1%, 1% and 2%) was evaluated via the spot dilution assay on prepared agar medium. Besides, the SNF3 and RGT2, which act as putative glucose sensors, and the RGT1 and MIG1, which act as putative transcriptional regulators and selected downstream hexose transporters (HXTs), were analysed through qRT-PCR analysis for the gene expression level under different glucose concentrations. Results: Comparative analysis of predicted amino acids in the phylogenetic tree showed high similarity between C. glabrata and S cerevisiae. Besides, C. glabrata demonstrated the capability to grow in glucose levels as low as 0.01% in the spot dilution assay. In qRT-PCR analysis, differential expressions were observed in selected genes when C. glabrata was subjected to different glucose concentrations. Conclusions: The constructed phylogenetic tree suggests the close evolutionary relationship between C. glabrata and S. cerevisiae. The capability of C. glabrata to grow in extremely low glucose environments and the differential expression of selected glucose-sensing related genes suggested the possible role of these genes in modulating the growth of C. glabrata in response to different glucose concentrations. This study helps deepen our understanding of the glucose sensing mechanism in C. glabrata and serves to provide fundamental data that may assist in unveiling this mechanism as a potential drug target.
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Affiliation(s)
- Tzu Shan Ng
- Department of Medical Microbiology and Parasitology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Mohd Nasir Mohd Desa
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Doblin Sandai
- Advanced Medical and Dental Institute, Universiti Sains Malaysia, 13200 Kepala Batas, Penang, Malaysia
| | - Pei Pei Chong
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Leslie Thian Lung Than
- Department of Medical Microbiology and Parasitology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
- Corresponding author: Leslie Thian Lung Than, Department of Medical Microbiology and Parasitology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia. Tel: +60-389472373, Fax: +60-389413802, E-mail:
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Rahman MM, Hamid SBA, Basirun WJ, Bhassu S, Rashid NRA, Mustafa S, Mohd Desa MN, Ali ME. TaqMan probe real-time polymerase chain reaction assay for the quantification of canine DNA in chicken nugget. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2015; 33:10-8. [PMID: 26458055 DOI: 10.1080/19440049.2015.1104558] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
This paper describes a short-amplicon-based TaqMan probe quantitative real-time PCR (qPCR) assay for the quantitative detection of canine meat in chicken nuggets, which are very popular across the world, including Malaysia. The assay targeted a 100-bp fragment of canine cytb gene using a canine-specific primer and TaqMan probe. Specificity against 10 different animals and plants species demonstrated threshold cycles (Ct) of 16.13 ± 0.12 to 16.25 ± 0.23 for canine DNA and negative results for the others in a 40-cycle reaction. The assay was tested for the quantification of up to 0.01% canine meat in deliberately spiked chicken nuggets with 99.7% PCR efficiency and 0.995 correlation coefficient. The analysis of the actual and qPCR predicted values showed a high recovery rate (from 87% ± 28% to 112% ± 19%) with a linear regression close to unity (R(2) = 0.999). Finally, samples of three halal-branded commercial chicken nuggets collected from different Malaysian outlets were screened for canine meat, but no contamination was demonstrated.
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Affiliation(s)
- Md Mahfujur Rahman
- a Nanotechnology and Catalysis Research Centre , University of Malayaob , Kuala Lumpur , Malaysia
| | - Sharifah Bee Abd Hamid
- a Nanotechnology and Catalysis Research Centre , University of Malayaob , Kuala Lumpur , Malaysia
| | - Wan Jefrey Basirun
- a Nanotechnology and Catalysis Research Centre , University of Malayaob , Kuala Lumpur , Malaysia.,b Department of Chemistry , University of Malaya , Kuala Lumpur , Malaysia
| | - Subha Bhassu
- c Institute of Biological Sciences & CEBAR Laboratory , University of Malaya , Kuala Lumpur , Malaysia
| | - Nur Raifana Abdul Rashid
- a Nanotechnology and Catalysis Research Centre , University of Malayaob , Kuala Lumpur , Malaysia
| | - Shuhaimi Mustafa
- d Institute of Halal Products Research , University of Putra Malaysia , Serdang , Malaysia
| | - Mohd Nasir Mohd Desa
- d Institute of Halal Products Research , University of Putra Malaysia , Serdang , Malaysia
| | - Md Eaqub Ali
- a Nanotechnology and Catalysis Research Centre , University of Malayaob , Kuala Lumpur , Malaysia
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Ng TS, Desa MNM, Sandai D, Chong PP, Than LTL. Growth, biofilm formation, antifungal susceptibility and oxidative stress resistance of Candida glabrata are affected by different glucose concentrations. Infect Genet Evol 2015; 40:331-338. [PMID: 26358577 DOI: 10.1016/j.meegid.2015.09.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Revised: 08/18/2015] [Accepted: 09/03/2015] [Indexed: 10/23/2022]
Abstract
Glucose is an important fuel source to support many living organisms. Its importance in the physiological fitness and pathogenicity of Candida glabrata, an emerging human fungal pathogen has not been extensively studied. The present study aimed to investigate the effects of glucose on the growth, biofilm formation, antifungal susceptibility and oxidative stress resistance of C. glabrata. In addition, its effect on the expression of a putative high affinity glucose sensor gene, SNF3 was also investigated. Glucose concentrations were found to exert effects on the physiological responses of C. glabrata. The growth rate of the species correlated positively to the amount of glucose. In addition, low glucose environments were found to induce C. glabrata to form biofilm and resist amphotericin B. Conversely, high glucose environments promoted oxidative stress resistance of C. glabrata. The expression of CgSNF3 was found to be significantly up-regulated in low glucose environments. The expression of SNF3 gene in clinical isolates was found to be higher compared to ATCC laboratory strains in low glucose concentrations, which may explain the better survivability of clinical isolates in the low glucose environment. These observations demonstrated the impact of glucose in directing the physiology and virulence fitness of C. glabrata through the possible modulation by SNF3 as a glucose sensor, which in turn aids the species to adapt, survive and thrive in hostile host environment.
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Affiliation(s)
- Tzu Shan Ng
- Department of Medical Microbiology and Parasitology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Mohd Nasir Mohd Desa
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Doblin Sandai
- Advanced Medical and Dental Institute, Universiti Sains Malaysia, 13200 Kepala Batas, Penang, Malaysia
| | - Pei Pei Chong
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Leslie Thian Lung Than
- Department of Medical Microbiology and Parasitology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
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Shakrin NNSM, Masri SN, Taib NM, Nordin SA, Jamal F, Desa MNM. Genotypic characterization of Malaysian human isolates of Streptococcus pneumoniae from carriage and clinical sources. Comp Immunol Microbiol Infect Dis 2014; 37:347-54. [DOI: 10.1016/j.cimid.2014.10.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Revised: 10/08/2014] [Accepted: 10/20/2014] [Indexed: 10/24/2022]
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Eskandarian N, Ismail Z, Neela V, van Belkum A, Desa MNM, Amin Nordin S. Antimicrobial susceptibility profiles, serotype distribution and virulence determinants among invasive, non-invasive and colonizing Streptococcus agalactiae (group B streptococcus) from Malaysian patients. Eur J Clin Microbiol Infect Dis 2014; 34:579-84. [PMID: 25359580 PMCID: PMC4356882 DOI: 10.1007/s10096-014-2265-x] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Accepted: 10/08/2014] [Indexed: 01/14/2023]
Abstract
A total of 103 group B streptococci (GBS) including 22 invasive, 21 non-invasive, and 60 colonizing isolates were collected in a Malaysian hospital (June 2010–October 2011). Isolates were characterized by conventional and molecular serotyping and analyzed for scpB, lmb, hylB, cylE, bac, bca and rib gene content. Antimicrobial susceptibility to penicillins, macrolides, lincosamides, quinolones and tetracyclines was determined using disk diffusion and the MICs for penicillin were determined by E-test. Molecular serotyping for all eight serotypes (Ia, Ib, II–VII) was in full accordance with conventional serotyping. Overall, taking CS and MS together, serotype VI was the most common capsular type (22.3 %) followed by VII (21.4 %), III (20.4 %), Ia (17.5 %), V (9.7 %), II (7.7 %) and IV (1 %). Susceptibility to beta-lactam antimicrobials was prevalent (100 %). Resistance rates for erythromycin, clindamycin and tetracycline were 23.3 %, 17.5 % and 71.8 %, respectively. PCR-virulence gene screening showed the presence of cylE, lmb, scpB and hylB in almost all the isolates while rib, bca, and bac genes were found in 29.1 %, 14.6 % and 9.7 % of the isolates. Certain genes were significantly associated with specific serotypes, namely, rib with serotypes Ia, II, III and VI; bca and bac with serotypes II and III. Furthermore, serotype Ia was significantly more common among patients with invasive infections (p < 0.01) and serotype VI isolates were significantly more common among carriers (p < 0.05). In summary, serotype distribution correlates with virulence gene content will be useful in epidemiological studies and design of vaccines.
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Affiliation(s)
- N Eskandarian
- Department of Medical Microbiology and Parasitology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
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Hanapi UK, Desa MNM, Ismail A, Mustafa S. A higher sensitivity and efficiency of common primer multiplex PCR assay in identification of meat origin using NADH dehydrogenase subunit 4 gene. J Food Sci Technol 2014; 52:4166-75. [PMID: 26139881 DOI: 10.1007/s13197-014-1459-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 06/14/2014] [Accepted: 06/27/2014] [Indexed: 11/26/2022]
Abstract
A Common Primer Multiplex PCR (CP-M-PCR) was developed to detect meat origin of four groups of animal (pig, ruminant, avian and rabbit). This method demonstrated higher sensitivity and efficiency than the conventional multiplex PCR. In this approach, a common forward primer was designed in the 5' end of a homologous region of mitochondrial NADH dehyrogenase subunit 4 (Nad 4) gene sequences of all the animal groups. Specific adapter reverse primers were designed by adding an adapter sequence at the 5' end. The same adapter sequence was used as the common adapter reverse primer. The primers generated specific fragments of 267, 370, 504, and 548 bp lengths for pig, ruminant, avian and rabbit meats, respectively. The use of adapter sequence at the 5' end of the common adapter reverse primers increased the efficiency of the amplification and the application of a common forward primer solved the complexity in multiplex PCR system. Bands of specific amplification can be detected in the PCR assays containing as low as 10(-6) μM of adapter reverse primer. This result indicated that the sensitivity was tremendously increased as compared to the conventional multiplex PCR (10(-3) μM). CP-M-PCR detection limit of the DNA samples was 0.1 ng for the four groups of meats. CP-M-PCR has greatly improved the sensitivity and efficiency of the PCR system for a more reliable and accurate outcome than conventional multiplex PCR system.
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Affiliation(s)
- Ummi Kalthum Hanapi
- Halal Products Research Institute, Putra Infoport, Universiti Putra Malaysia, 43400 Serdang, Selangor Malaysia
| | - Mohd Nasir Mohd Desa
- Halal Products Research Institute, Putra Infoport, Universiti Putra Malaysia, 43400 Serdang, Selangor Malaysia ; Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor Malaysia
| | - Amin Ismail
- Halal Products Research Institute, Putra Infoport, Universiti Putra Malaysia, 43400 Serdang, Selangor Malaysia ; Department of Nutrition and Dietetic, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor Malaysia
| | - Shuhaimi Mustafa
- Halal Products Research Institute, Putra Infoport, Universiti Putra Malaysia, 43400 Serdang, Selangor Malaysia ; Department of Microbiology, Faculty of Biotechnology and Molecular Biology, Universiti Putra Malaysia, 43400 Serdang, Selangor Malaysia
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Jeevajothi Nathan J, Mohd Desa MN, Thong KL, Clarke SC, Masri SN, Md Yasin R, Mohd Taib N. Genotypic characterization of Streptococcus pneumoniae serotype 19F in Malaysia. Infect Genet Evol 2013; 21:391-4. [PMID: 24342879 DOI: 10.1016/j.meegid.2013.11.026] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Revised: 11/27/2013] [Accepted: 11/30/2013] [Indexed: 11/24/2022]
Abstract
Streptococcus pneumoniae is an epidemiologically important bacterial pathogen. Recently, we reported the antibiotic susceptibility patterns of a limited collection of pneumococcal isolates in Malaysia with a high prevalence of erythromycin resistant strains. In the present study, 55 of the pneumococcal isolates of serotype 19F were further analysed by pulsed field gel electrophoresis (PFGE) and multilocus sequence typing (MLST). The generated genotypic patterns were then correlated with the antibiograms previously reported. Forty-seven different PFGE profiles (PTs) were obtained, showing that the isolates were genetically diverse. MLST identified 16 sequence types (STs) with ST-236 being predominant (58.2%), followed by ST-81 (10.3%). Among the ST-236 isolates, 22 were erythromycin resistant S. pneumoniae (ERSP) and 15 were trimethoprim/sulfamethoxazole (TMP/SMX) resistant, while among ST-81, four isolates were ERSP and two were TMP/SMX resistant. The high prevalence of erythromycin resistant serotype 19F isolates of ST-236 in this study has also been reported in other North and South East Asian countries.
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Affiliation(s)
- Jayakayatri Jeevajothi Nathan
- Department of Medical Microbiology and Parasitology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor Darul Ehsan, Malaysia.
| | - Mohd Nasir Mohd Desa
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor Darul Ehsan, Malaysia.
| | - Kwai Lin Thong
- Division of Microbiology, Institute of Biological Science, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia; Biomedical Science and Molecular Typing Laboratory, Institute of Graduate Studies, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Stuart C Clarke
- Infectious Disease Epidemiology Group, Sir Henry Wellcome Laboratories, Academic Unit of Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, UK; NIHR Southampton Respiratory Biomedical Research Unit, Southampton, UK; Institute of Life Sciences, University of Southampton, UK; Public Health England, Southampton, UK
| | - Siti Norbaya Masri
- Department of Medical Microbiology and Parasitology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor Darul Ehsan, Malaysia.
| | - Rohani Md Yasin
- Specialized Diagnostic Centre, Institute for Medical Research, Jalan Pahang, 50588 Kuala Lumpur, Malaysia
| | - Niazlin Mohd Taib
- Department of Medical Microbiology and Parasitology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor Darul Ehsan, Malaysia.
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Shakrin NNSM, Balasubramaniam SD, Yusof HA, Mastuki MF, Masri SN, Taib NM, Nordin SA, Jamal F, Clarke SC, Desa MNM. Evaluation of PCR-based approach for serotype determination of Streptococcus pneumoniae. Trop Biomed 2013; 30:338-344. [PMID: 23959499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Determination of Streptococcus pneumoniae serotypes is essential for epidemiological surveillance. Therefore accurate, reliable and cost effective serotyping method is crucial. In this study, we determined the serotypes of 41 pneumococcal isolates recovered from human anterior nares by multiplex Polymerase Chain Reaction (PCR) utilizing published primers. The data was then compared with conventional serology using latex agglutination (LA) and the Quellung reaction. Based on the PCR-approach, 8 different serogroups/serotypes were detected with one isolate classified as non-typeable (cpsA-negative). In reference to the serology-based data, the results were in agreement except for one isolate. For the latter isolate, the LA and Quellung tests failed to show a reaction but the PCR-approach and sequencing identified the isolate as serogroup 15B/C. Based on this experimental setting, we found that the PCR-approach for pneumococcal serotypes determination is reliable to serve as the alternative for determining the pneumococcal serotyping.
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Affiliation(s)
- N N S M Shakrin
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
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Eskandarian N, Neela V, Ismail Z, Puzi SM, Hamat RA, Desa MNM, Nordin SA. Group B streptococcal bacteremia in a major teaching hospital in Malaysia: a case series of eighteen patients. Int J Infect Dis 2013; 17:e777-80. [PMID: 23453715 DOI: 10.1016/j.ijid.2013.01.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2012] [Revised: 01/06/2013] [Accepted: 01/12/2013] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Group B Streptococcus (GBS) is a leading cause of infections such as meningitis and septicemia in neonates and pregnant women; however the significance of invasive GBS disease has not been clearly defined in non-pregnant adults. METHODS We reviewed the hospital records of 18 cases with GBS bacteremia who attended the Universiti Kebangsaan Malaysia Medical Centre from June 2010 to October 2011. We analyzed the clinical findings of both bacteremic adults and neonates and compared them to previous studies of GBS bacteremia. Serotyping was done by latex agglutination test using 10 distinct antisera (Ia, Ib, and II-IX). RESULTS During the period of 1 year and 4 months, there were 18 patients with GBS bacteremia. Five cases occurred in neonates, one in a parturient woman, and 12 in other adults. All neonates with bacteremia were males and two of them were premature. Septicemia was the most common clinical presentation in neonates. They were treated with intravenous (IV) penicillin G and gentamicin. The adults included nine men (69%) and four women (31%). Their mean age was 60 years and all patients had more than two underlying conditions. The most common clinical syndrome was pneumonia (n=6, 46.5%). The others were peritonitis (n=3, 23.1%), primary bacteremia (n=2, 15.5%), septic arthritis (n=2, 15.5%), skin and soft tissue infection (n=1, 7.7%), meningitis (n=1, 8%), urinary tract infection (n=1, 8%), and intravascular device infection (n=1, 7.7%). Cardiovascular diseases (n=7, 53.8%) were the most common underlying conditions, and diabetes mellitus (n=5, 38.5%) was second. The other co-morbid conditions were hyperlipidemia (n=3, 23.1%), renal disease (n=3, 23.1%), liver disease and/or alcohol abuse (n=3, 23.1%), autoimmune disease or immunosuppressive condition (n=2, 15.5%), malignancy (n=2, 15.5%), respiratory disease (n=1, 8%), and postpartum condition (n=1, 8%), as well as miscellaneous conditions including intravenous drug abuse, HIV infection, and trauma (n=2, 15.5%). Polymicrobial bacteremia was found in five (45.4%) cases and Staphylococcus aureus was the most common concurrent bacterial isolate. Of the 18 GBS isolates in both adults and neonates, serotype Ia was predominant (38.9%), followed by VI (27.8%), V (11.1%), and III (5.5%); the remaining 16.7% were non-typeable. CONCLUSIONS GBS bacteremia is a significant problem and is associated with serious underlying disease, which may result in a high rate of mortality, not only in neonates and pregnant women, but also in non-pregnant adults.
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Affiliation(s)
- N Eskandarian
- Department of Medical Microbiology and Parasitology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
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Yatim MM, Masri SN, Desa MNM, Taib NM, Nordin SA, Jamal F. Determination of phenotypes and pneumococcal surface protein A family types of Streptococcus pneumoniae from Malaysian healthy children. J Microbiol Immunol Infect 2012; 46:180-6. [PMID: 22763088 DOI: 10.1016/j.jmii.2012.04.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2012] [Revised: 03/09/2012] [Accepted: 04/23/2012] [Indexed: 10/28/2022]
Abstract
BACKGROUND There is limited information about pneumococcal carriage among healthy children in Malaysia. Therefore, this study was conducted to determine the prevalence rate, serotype distribution, susceptibility pattern, and pneumococcal surface protein A (PspA) family types of Streptococcus pneumoniae isolates in the nasal carriage of children 5 years old or younger in three day care centers in Kuala Lumpur, Malaysia. METHODS Nasal swabs were collected from 195 healthy children, age 5 years or younger, from June to December 2010. S pneumoniae was identified by phenotypic and genotypic methods. The serotyping was performed using Pneumotest kit (Statens Serum Institut, Copenhagen, Denmark) and the susceptibility pattern was determined by using the E-test method (AB Biodisk, Solna, Sweden). PspA family typing was done using polymerase chain reaction. RESULTS S pneumoniae was found in the nasal carriage of 35.4% of children (69 of 195) and penicillin resistance was found in 23.2% (16 of 69). Among the 69 isolates, multidrug-resistant S pneumoniae (MDRSP) was present in 20.3%. All 16 penicillin-resistant S pneumoniae (PRSP) isolates were resistant to erythromycin and 14 PRSPs (87.5%) were resistant to co-trimoxazole. The six most common serotypes were 6A, 23F, 19A, 6B, 19F, and 15C, which were found in 87% of all isolates. Of the 69 isolates, 24.6% belonged to PspA family 1, 71.0% to PspA family 2, and 4.3% to PspA family 3. CONCLUSION Twenty-eight of the isolates (40.6%) belonged to serotypes included in the pneumococcal polysaccharide vaccines (PCV) 7 and 10, whereas 48 (69.5%) were included in PCV13. The high rate of PRSP and MDRSP supports the need for continuing surveillance of pneumococcal carriage. The major PspA families were 1 and 2 (95.7%), thus making them suitable candidates for future vaccines.
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Affiliation(s)
- Masura Mohd Yatim
- Department of Medical Microbiology and Parasitology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Selangor, Malaysia
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Idris SNA, Desa MNM, Aziz MN, Taib NM. Antimicrobial susceptibility pattern and distribution of exoU and exoS in clinical isolates of Pseudomonas aeruginosa at a Malaysian hospital. Southeast Asian J Trop Med Public Health 2012; 43:116-123. [PMID: 23082561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
This study was conducted to determine the antibiotic susceptibility pattern and distribution of exoU and exoS among 44 clinical isolates of P. aeruginosa collected from different patients over a 3-month period in 2010 at a major Malaysian hospital. Susceptibility data by disk diffusion method for cefepime (30 microg), ceftazidime (30 microg), gentamicin (10 microg), piperacillin-tazobactam (100/10 microg) and ciprofloxacin (5 microg) were available for 38 isolates. Resistance to ceftazidime and piperacillin-tazobactam was the most common (74%) with five isolates not susceptible to three or more different antibiotics. PCR detection of exoU and exoS of all 44 isolates showed the former gene to be present in 18 and exoS in 41. In analyzing the two genes together, 17 isolates were detected for exoU and exoS with only two being negative for both genes. Only one isolate was detected for exoU alone whereas 24 for exoS alone. Distribution of the genes in relation to antibiotic susceptibility was inapplicable due to the majority of the isolates having similar susceptibility patterns, but the tendency of exoU-carrying isolates to be present in male patients (83%) and respiratory sites (61%) was observed (p < 0.050). The finding warrants further investigation in a larger sample of isolates.
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Affiliation(s)
- Siti Nur Atiqah Idris
- Department of Medical Microbiology and Parasitology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Selangor
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