Displaying publications 1 - 20 of 59 in total

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  1. Azizi MMF, Romeli S, Razali H, Ariffin EY, Tajol Ariffin MA, Heng LY, et al.
    Sci Rep, 2022 Nov 11;12(1):19324.
    PMID: 36369187 DOI: 10.1038/s41598-022-20998-8
    More than 200 different cultivars of durian exist worldwide but Durio zibethinus or Musang King (MK) is the most premium and prized durian fruit among the recommended varieties. Early identification of this premium variety is critical to protect from non-authentic MK durian cultivars. However, the MK variety's morphological traits are nearly identical to other varieties. Currently, the identification of durian varieties is mostly performed via evaluation of leaf shape, fruit shape, aroma, taste and seed shape and this requires trained personnel for the morphology observation. To enable the rapid identification of the MK variety, PCR amplification of ten durian varieties using six gene candidates from the chloroplast genome was first performed to obtain DNA probes that were specific to the MK durian variety. PCR amplification of ten durian varieties using primers designed confirmed that the nadhA gene sequence showed an obvious difference in the MK variety from other durian varieties. The unique sequence of MK was used as a DNA probe to develop an electrochemical biosensor for the direct identification of the MK durian variety. The electrochemical biosensor was based on the hybridization response of the immobilized DNA probe with the target DNA from the MK variety and was monitored via differential pulse voltammetry technique. Under optimal conditions, the DNA electrochemical biosensor showed a low detection limit at 10% of MK genomic DNA concentration with a wide linear calibration range of 0.05-1.5 µM (R2 = 0.9891) and RSD value of 3.77% (n = 3). The results of the developed DNA biosensor provide high promise for the development of portable sensors employed in the determination of MK variety in the field.
  2. Markby J, Shilton S, Sem X, Chan HK, Md Said R, Siva S, et al.
    BMJ Open, 2021 Dec 24;11(12):e055142.
    PMID: 34952885 DOI: 10.1136/bmjopen-2021-055142
    INTRODUCTION: To achieve the elimination of hepatitis C virus (HCV), substantial scale-up in access to testing and treatment is needed. This will require innovation and simplification of the care pathway, through decentralisation of testing and treatment to primary care settings and task-shifting to non-specialists. The objective of this study was to evaluate the feasibility and effectiveness of decentralisation of HCV testing and treatment using rapid diagnostic tests (RDTs) in primary healthcare clinics (PHCs) among high-risk populations, with referral of seropositive patients for confirmatory viral load testing and treatment.

    METHODS: This observational study was conducted between December 2018 and October 2019 at 25 PHCs in three regions in Malaysia. Each PHC was linked to one or more hospitals, for referral of seropositive participants for confirmatory testing and pretreatment evaluation. Treatment was provided in PHCs for non-cirrhotic patients and at hospitals for cirrhotic patients.

    RESULTS: During the study period, a total of 15 366 adults were screened at the 25 PHCs, using RDTs for HCV antibodies. Of the 2020 (13.2%) HCV antibody-positive participants, 1481/2020 (73.3%) had a confirmatory viral load test, 1241/1481 (83.8%) were HCV RNA-positive, 991/1241 (79.9%) completed pretreatment assessment, 632/991 (63.8%) initiated treatment, 518/632 (82.0%) completed treatment, 352/518 (68.0%) were eligible for a sustained virological response (SVR) cure assessment, 209/352 (59.4%) had an SVR cure assessment, and SVR was achieved in 202/209 (96.7%) patients. A significantly higher proportion of patients referred to PHCs initiated treatment compared with those who had treatment initiated at hospitals (71.0% vs 48.8%, p<0.001).

    CONCLUSIONS: This study demonstrated the effectiveness and feasibility of a simplified decentralised HCV testing and treatment model in primary healthcare settings, targeting high-risk groups in Malaysia. There were good outcomes across most steps of the cascade of care when treatment was provided at PHCs compared with hospitals.

  3. Abu Bakar, N.
    Malaysian Dental Journal, 2015;37(1):30-38.
    MyJurnal
    Introduction: Cone beam computed tomography (CBCT) has gained interest for improving diagnosis, treatment planning and facilitating better patient’s management in various dental fields. This study is part of the quality assurance programme in Dental Faculty, International Islamic University Malaysia (IIUM). This center offers dental radiography service not only for internal clinics but also act as a referral center for the eastern areas, Pahang, Malaysia. Aims: The aims of this study were; 1) to assess referral pattern for CBCT scans at the Dental Faculty, IIUM, Kuantan, and 2) to evaluate the completeness of the current referral form used by clinicians (for both internal and external referrals). Methods: An audit looking at both the external and internal referral CBCT forms of a four year period of examination (2010-2013) at the Radiology Unit, Dental Faculty, IIUM. Source of referrals, indications for CBCT and the referral forms were examined and analysed. Results: Total CBCT scans taken within the four-year period were 171, in which 96 were referred from internal sources whilst 75 were external referrals. External referrals were mainly from Paediatric Dentistry and Orthodontic clinics (59%), while other referrals were from implant clinic (20%), Paediatrics and Special Needs clinic (15%), Oral MaxilloFacial Surgery clinic (4%) and Periodontic clinic (1%) and Oral Medicine Oral Pathology (OMOP) clinics (1%). All forms from external sources are completely filled. In the Internal referral form, 41% of them came with no indication of why CBCT need to be taken. Out of 59% of cases with indications, 33% came from Paediatric Dentistry and Orthodontic department, followed by Oral Surgery department (10%). Implant treatment planning accounted for 7% of cases, Periodontics 4%, Temporo-Mandibular Joint assessment 2%, 1% for Conservative dentistry and Prosthodontic cases respectively and 1% cleft case. Further analysis of the internal referral forms revealed that only 14% of the forms were filled with complete patients’ details, 40% specified pregnancy status and 67% clearly stated patients’ medical status. Area of interest was not specified in 69% of cases and clinicians’ names were not stated in 94% of the cases. Majority of the forms were completed with clinicians’ signature (99%) and also radiographers’ details (97%). Conclusions: This study indicated that the majority of IIUM CBCT referrals were from internal sources. However, most of the referral forms were not completely filled. The internal form used, therefore, need to be improved and a much firmer referral framework should be in place.
  4. Babamale OA, Opeyemi OA, Bukky AA, Musleem AI, Kelani EO, Okhian BJ, et al.
    Malays J Med Sci, 2020 May;27(3):105-116.
    PMID: 32684811 MyJurnal DOI: 10.21315/mjms2020.27.3.11
    Background: The connection between malaria-associated morbidities and farming activities has not been succinctly reported. This study aimed to address the connectivity between farming activities and malaria transmission.

    Methods: The study took place in the agricultural setting of Nigeria Edu local government (9° N, 4.9° E) between March 2016 and December 2018. A pre-tested structured questionnaire was administered to obtain information on their occupation and malaria infection. Infection status was confirmed with blood film and microscopic diagnosis of Plasmodium falciparum was based on the presence of ring form or any other blood stages. Individuals who are either critically ill or lived in the community less than 3 months were excluded from the study.

    Results: Of the 341 volunteers, 58.1% (52.9% in Shigo and 61.4% in Sista) were infected (parasitaemia density of 1243.7 parasites/μL blood). The prevalence and intensity of infection were higher among farmers (71.3%, 1922.9 parasites/μL blood, P = 0.005), particularly among rice farmers (2991.6 parasites/μL blood) compared to non-farmer participants. The occurrence and parasite density follow the same pattern for sex and age (P < 0.05). Children in the age of 6 to 10 years (AOR: 2.168, CI: 1.63-2.19) and ≥ 11 years (AOR: 3.750, CI: 2.85-3.80) groups were two-and four-fold more likely to be infected with malaria. The analysis revealed that the proximity of bush and stagnant water to the farmer (73.9%, AOR: 3.242, CI: 2.57-3.61) and non-farmer (38.1%, AOR: 1.362, CI: 1.25-1.41) habitations influence malaria transmission.

    Conclusion: This study highlights farming activities as a risk factor for malaria infection in agro-communities. Integrated malaria control measures in agricultural communities should therefore include water and environmental management practices.

  5. Wan Musa WZ, Abu Bakar NAF, Ahmad A, Naing NN
    Med J Malaysia, 2022 Jan;77(1):71-81.
    PMID: 35086997
    INTRODUCTION: High intakes of total fat are long known as a risk factor for coronary heart disease (CHD), but the association between fatty acids and CHD remains unclear. This scoping review aims to collate and analyze the association between types of fatty acid and risk of CHD.

    MATERIALS AND METHODS: This review uses the methodological framework of Arksey and O'Malley. A total of 19 studies were selected from 9456 studies screened from the electronic databases.

    RESULTS: Majority of the studies reported no association between saturated fat (SFA) and monounsaturated fat (MUFA) with CHD. Meanwhile, seven out of 12 studies reported inverse association between polyunsaturated fat (PUFA) and risk of CHD whilst 67% of the studies found that trans-fat intake was positively associated with CHD risk.

    CONCLUSIONS: This review finds that all the types of dietary fat have different effects on the risk of CHD. Nevertheless, intakes of healthy fat such as MUFA and PUFA in controlled amounts are expected to reduce CHD risk. In addition, the divergence of findings found between studies might be due to the methodological inconsistencies. More robust research is needed to determine the actual dietary determinants of CHD as it will provide important information for future development of dietary intervention.

  6. Low SF, Abu Bakar N, Ngiu CS
    Iran Red Crescent Med J, 2014 Aug;16(8):e9481.
    PMID: 25389497 DOI: 10.5812/ircmj.9481
    INTRODUCTION: Camurati-Engelmann disease (CED) is a rare autosomal dominant disease with various phenotypic expressions. The symptoms usually develop during childhood. The hallmark of the disease is bilateral symmetric diaphyseal hyperostosis of the long bones with progressive involvement of the metaphysis. The epiphysis is strictly spared. The common clinical symptoms are pain of the extremities, muscle wasting, waddling gait, and lethargy. CED is rarely seen in conjunction with hypogonadism. CED-associated hypothyroidism has not been reported yet. Clinical assessment and skeletal survey are important to make the diagnosis.

    CASE PRESENTATION: Hereby we reported a case of CED with concomitant hypogonadism and hypothyroidism. Serial plain radiographs of the patient showed classic and progressive diaphyseal cortical hyperostosis of the long bone.

    CONCLUSIONS: Hyperostosis of the skull was observed in the present case. The characteristic osseous changes of CED were highlighted and the differential diagnoses were discussed.

  7. Abu Bakar N, Lefeber DJ, van Scherpenzeel M
    J Inherit Metab Dis, 2018 May;41(3):499-513.
    PMID: 29497882 DOI: 10.1007/s10545-018-0144-9
    Clinical glycomics comprises a spectrum of different analytical methodologies to analyze glycan structures, which provides insights into the mechanisms of glycosylation. Within clinical diagnostics, glycomics serves as a functional readout of genetic variants, and can form a basis for therapy development, as was described for PGM1-CDG. Integration of glycomics with genomics has resulted in the elucidation of previously unknown disorders of glycosylation, namely CCDC115-CDG, TMEM199-CDG, ATP6AP1-CDG, MAN1B1-CDG, and PGM1-CDG. This review provides an introduction into protein glycosylation and presents the different glycomics methodologies ranging from gel electrophoresis to mass spectrometry (MS) and from free glycans to intact glycoproteins. The role of glycomics in the diagnosis of congenital disorders of glycosylation (CDG) is presented, including a diagnostic flow chart and an overview of glycomics data of known CDG subtypes. The review ends with some future perspectives, showing upcoming technologies as system wide mapping of the N- and O-glycoproteome, intact glycoprotein profiling and analysis of sugar metabolism. These new advances will provide additional insights and opportunities to develop personalized therapy. This is especially true for inborn errors of metabolism, which are amenable to causal therapy, because interventions through supplementation therapy can directly target the pathogenesis at the molecular level.
  8. Abdullah FH, Abu Bakar NHH, Abu Bakar M
    J Hazard Mater, 2021 03 15;406:124779.
    PMID: 33338763 DOI: 10.1016/j.jhazmat.2020.124779
    Zinc oxide (ZnO) photocatalysts were successfully synthesized via chemical and green, environmentally-benign methods. The work highlights the valorization of banana peel (BP) waste extract as the reducing and capping agents to produce pure, low temperature, highly crystalline, and effective ZnO nanoparticles with superior photocatalytic activities for the removal of hazardous Basic Blue 9 (BB9), crystal violet (CV), and cresol red (CR) dyes in comparison to chemically synthesized ZnO. Their formation and morphologies were verified by various optical spectroscopic and electron microscopic techniques. XRD results revealed that the biosynthesized ZnO exhibited 15.3 nm crystallite size when determined by Scherrer equation, which was smaller than the chemically synthesized ZnO. The FTIR spectra confirmed the presence of biomolecules in the green-mediated catalyst. EDX and XPS analyses verified the purity and chemical composition of ZnO. Nitrogen sorption analysis affirmed the high surface area of bio-inspired ZnO. Maximum removal efficiencies were achieved with 30 mg green ZnO catalyst, 2.0 × 10-5 M BB9 solution, alkaline pH 12, and irradiation time 90 min. Green-mediated ZnO showed superior photodegradation efficiency and reusability than chemically synthesized ZnO. Therefore, this economical, environment-friendly photocatalyst is applicable for the removal of organic contaminants in wastewater treatment under visible light irradiation.
  9. Dhamanti I, Leggat S, Barraclough S, Liao HH, Abu Bakar N
    J Patient Saf, 2021 Jun 01;17(4):e299-e305.
    PMID: 32217924 DOI: 10.1097/PTS.0000000000000622
    OBJECTIVES: Incident reporting is one of the tools used to improve patient safety that has been widely used in health facilities in many countries. Incident reporting systems provide functionality to collect, analyze, and disseminate lessons learned to the wider community, whether at the hospital or national level. The aim of this study was to compare the patient safety incident reporting systems of Taiwan, Malaysia, and Indonesia to identify similarities, differences, and areas for improvement.

    METHODS: We searched the official Web sites and homepages of the responsible leading patient safety agencies of the three countries. We reviewed all publicly available guidelines, regulatory documents, government reports that included policies, guidelines, strategy papers, reports, evaluation programs, as well as scientific articles and gray literature related to the incident reporting system. We used the World Health Organization components of patient safety reporting system as the guidelines for comparison and analyzed the documents using descriptive comparative analysis.

    RESULTS: Taiwan had the most incidents reported, followed by Malaysia and Indonesia. Taiwan Patient Safety Reporting (TPR) and the Malaysian Reporting and Learning System had similar attributes and followed the World Health Organization components for incident reporting. We found differences between the Indonesian system and both of TPR and the Malaysian system. Indonesia did not have an external reporting deadline, analysis and learning were conducted at the national level, and there was a lack of transparency and public access to data and reports. All systems need to establish a clear and structured incident reporting evaluation framework if they are to be successful.

    CONCLUSIONS: Compared with TPR and Malaysian system, the Indonesian patient safety incident reporting system seemed to be ineffective because it failed to acquire adequate national incident reporting data and lacked transparency; these deficiencies inhibited learning at the national level. We suggest further research on the implementation at the hospital level to see how far national guidelines and policy have been implemented in each country.

  10. Sew YS, Aizat WM, Razak MSFA, Zainal-Abidin RA, Simoh S, Abu-Bakar N
    Data Brief, 2020 Aug;31:105927.
    PMID: 32642524 DOI: 10.1016/j.dib.2020.105927
    The proteome data of whole rice grain is considerably limited particularly for rice with pigmentations such as black and red rice. Hence, we performed proteome analysis of two black rice varieties (BALI and Pulut Hitam 9), two red rice varieties (MRM16 and MRQ100) and two white rice varieties (MR297 and MRQ76) using label-free liquid chromatography Triple TOF 6600 tandem mass spectrometry (LC-MS/MS). Our aim was to profile and identify proteins related to nutritional (i.e. antioxidant, folate and low glycaemic index) and quality (i.e. aromatic) traits based on peptide-centric scoring from the Sequential Window Acquisition of All Theoretical Mass Spectra (SWATH-MS) approach. Both information dependent acquisition (IDA) and SWATH-MS run were performed in this analysis. Raw data was then processed using ProteinPilot software to identify and compare proteins from the six different varieties. In future, this proteomics data will be integrated with previously obtained genomics [1] and transcriptomics [2] data focusing on the above nutritional and quality traits, with an ultimate aim to develop a panel of functional biomarkers related to those traits for future rice breeding programme. The raw MS data of the pigmented and non-pigmented rice varieties have been deposited to ProteomeXchange database with accession number PXD018338.
  11. Zainal-Abidin RA, Zainal Z, Mohamed-Hussein ZA, Sew YS, Simoh S, Ab Razak S, et al.
    Data Brief, 2020 Aug;31:105806.
    PMID: 32566707 DOI: 10.1016/j.dib.2020.105806
    The genomics and genetic data of pigmented and non-pigmented Malaysian rice varieties are still limited. Hence, we performed the genome resequencing of two black rice varieties (Bali, Pulut Hitam 9), two red rice varieties (MRM16, MRQ100) and two white rice varieties (MR297 and MRQ76) using Illumina HiSeq 4000 platform with 30x sequencing coverage. We aimed to identify and annotate single nucleotide polymorphisms (SNPs) from the genome of these four pigmented and two non-pigmented rice varieties. The potential SNPs will be used in developing the functional SNP markers related to nutritional (i.e. antioxidant, folate, amylose) and quality (i.e. aromatic) traits. Raw data of the pigmented and non-pigmented rice varieties have been deposited into the European Nucleotide Archive (ENA) database with accession number PRJEB29070 and PRJEB32344, respectively.
  12. Muhammad Zuki MF, Abu Bakar N
    Data Brief, 2023 Dec;51:109808.
    PMID: 38075603 DOI: 10.1016/j.dib.2023.109808
    The dataset was obtained from a time cross-sectional empirical survey to determine the intention to participate in Family Takaful (Solidarity) products. The survey was collected from 277 academicians in private Islamic Higher Education Institutions in Malaysia, with 272 valid cases. The academicians were chosen because of the various education levels, as education is an influential factor in many previous behavioural studies. The questionnaire was developed using scales based on the previous literature, such as intention, attitude, subjective norms, perceived behavioural intention and institutional trust. The reliability and validity of all variables indicated that the measurement items were appropriate. This dataset brought a novelty by conceptualizing the institutional trust construct to predict the customers' intention to participate in Family Takaful (Solidarity) products. Results indicated that the data is suitable for performing replication studies.
  13. Ismail, K., Ghazali@Suhaimi, S.S., Abu Bakar, N., Mokhtar, K.I., Kharuddin, A.F.
    MyJurnal
    Introduction: Malocclusion is one of the most common dental problems observed. Limited data is currently
    available regarding the demographics of malocclusion observed locally.

    Materials And Methods: This is a
    retrospective study where 770 patients were recruited from May 2009 till December 2014. 560 orthodontic
    study models that met the inclusion criteria were examined and the malocclusions were classified according
    to the British Standard Institute (BSI) incisor classification. Demographic pattern and their relationship were
    analysed by structural equation modelling using SPSS (version 23.0).

    Results: From 560 study models
    analysed, 72% were female. The age of the patients ranges from 7-12 years old (17.1%), 13-17 years old
    (55.9%) and >18 years old (27.0%). Majority of the patients were Malay followed by Chinese (5.7%), Indian
    (1.8%) and other races (1.8%) Treatments received were fixed appliances (FA) (60.0%), removable appliances
    (RA) (12.5%), functional appliances (FnA) (1.1%), combination of RA and FA (16.1%), combination of FnA and
    FA (2.1%) and consultation (8.2%). Types of malocclusions observed were Class I (25.7%), Class II/1(32.7%),
    Class II/2 (7.5%) and Class III (34.1%). There was significant association (p
  14. Khalid MKA, Nik Husain NR, Wan Mohammad WMZ, Idris N, Abu Bakar N
    Cureus, 2023 Aug;15(8):e44488.
    PMID: 37791203 DOI: 10.7759/cureus.44488
    INTRODUCTION: The current inspection checklist for the assessment of food preparation areas in preschools in Malaysia has not been revised since 2012. The checklist's content needs to be improved to ensure relevant parameters are covered during preschool inspections.

    OBJECTIVE: The objective of this study was to develop and validate an observation checklist for assessing the hygiene and sanitation of food preparation areas in preschools.

    METHODOLOGY: The study was conducted in Kota Bharu Kelantan from March 2021 to February 2022. The development of the observation checklist was conducted in four stages: (1) the construction of domains and items from the existing literature, (2) content validation by six experts (using the item-level content validity index (I-CVI) and the scale-level content validity index (S-CVI), (3) face validation by 10 experts (using the item-level face validity index (I-FVI) and the scale-level face validity index (S-FVI)), and (4) reliability analysis (using the intercorrelation coefficient (ICC)). Four assessors performed the reliability analysis at two preschools.

    RESULTS: The initial draft of the checklist contained three domains and 57 items: building and facility (10 subdomains and 38 items), process control (four subdomains and 12 items), and food handlers (one subdomain and seven items). The I-CVI scores for building and facility, process control, and food handlers were 0.97, 1.00, and 1.00, respectively, indicating good relevancy of items. The S-CVI value was 1.0 for all domains, showing good relevance of the items. The I-FVI above 0.8 and S-FVI values above 0.9 for all domains imply that the participants easily understood the checklist. The ICC for each domain was 0.847 (95% CI 0.716-0.902) for the building facility and 1.0 for process control and food handler, and the ICC for the three domains combined was 0.848 (95% CI 0.772-0.904). The final validated checklist consists of three domains with 57 items.

    CONCLUSION: The newly developed observation checklist is a valid and reliable tool for assessing the hygiene and sanitation of preschool food preparation areas.

  15. Abu Bakar N, Mat Salleh M, Ali Umar A, Shapter JG
    MethodsX, 2017;4:486-491.
    PMID: 29201649 DOI: 10.1016/j.mex.2017.11.008
    Silver nanoparticles deposited on quartz substrates are widely used as SERS substrates. The nanoparticles can be deposited directly from colloidal solution by dipping technique. However, the adhesion of the particles on the quartz surface is very poor. Normally the substrate is pre-treated with hydroxylation or silanisation process. In this paper, we have demonstrated that the application of the sequence pre-treatment hydroxylation and silanisation have improved the density of silver nanoplates desposited on the quartz surface. •Sequence hydroxylation and silanisation pre-treatment assists the deposition of the nanoplate on the surface.•Various immersion times of the quartz surface into the colloidal nanoplates determined size distributions and density surface of the nanoplates on the surface.
  16. Zainal-Abidin RA, Abu-Bakar N, Sew YS, Simoh S, Mohamed-Hussein ZA
    Int J Genomics, 2019;2019:4168045.
    PMID: 31687375 DOI: 10.1155/2019/4168045
    Recently, rice breeding program has shown increased interests on the pigmented rice varieties due to their benefits to human health. However, the genetic variation of pigmented rice varieties is still scarce and remains unexplored. Hence, we performed genome-wide SNP analysis from the genome resequencing of four Malaysian pigmented rice varieties, representing two black and two red rice varieties. The genome of four pigmented varieties was mapped against Nipponbare reference genome sequences, and 1.9 million SNPs were discovered. Of these, 622 SNPs with polymorphic sites were identified in 258 protein-coding genes related to metabolism, stress response, and transporter. Comparative analysis of 622 SNPs with polymorphic sites against six rice SNP datasets from the Ensembl Plants variation database was performed, and 70 SNPs were identified as novel SNPs. Analysis of SNPs in the flavonoid biosynthetic genes revealed 40 nonsynonymous SNPs, which has potential as molecular markers for rice seed colour identification. The highlighted SNPs in this study show effort in producing valuable genomic resources for application in the rice breeding program, towards the genetic improvement of new and improved pigmented rice varieties.
  17. Abdul Halim Chong FH, Md Salleh SN, Abu Bakar N, Ismail IN
    Singapore Dent J, 2019 12;39(1):41-52.
    PMID: 32910746 DOI: 10.1142/S2214607519500044
    Aim: This study evaluates perception toward facial appearance in dentofacial deformity and the need for orthognathic surgery among the public with and without dental backgrounds. Materials and Methods: A questionnaire consisting of 12 facial photographs of cases with dentofacial deformity or malocclusion in varying severity was used. A hundred individuals were selected to answer the questionnaire. The perception of facial appearance (FAS), treatment need score (TNS), and knowledge regarding dentofacial deformity were used for the evaluation. Results: Significant differences were found between dental and non-dental when the respondents' knowledge in all the questionnaire items ([Formula: see text].05) was assessed. However, no significant difference was found in the mean of FAS and TNS in all the presented cases (normal, borderline, severe). Pearson correlation between perceived FAS and TNS was statistically negative for severe and normal cases, whereby a decrease in FAS for severe cases showed an increase in TNS, and an increase in FAS for normal cases showed a decrease in TNS. Conclusion: Respondents with dental background had sound knowledge of dentofacial deformity. A poorly attractive respondent with dentofacial deformity showed a greater need for orthognathic surgery.
  18. Badrun R, Abu Bakar N, Laboh R, Redzuan R, Bala Jaganath I
    Genome Announc, 2017 Jun 01;5(22).
    PMID: 28572313 DOI: 10.1128/genomeA.00408-17
    Blood disease bacterium A2 HR-MARDI was isolated from banana plants infected with banana blood disease and which were planted in Kuala Kangsar, Malaysia. Here, we report a draft genome sequence of blood disease bacterium A2 HR-MARDI, which could provide important information on the virulence mechanism of this pathogen.
  19. Redzuan RA, Abu Bakar N, Rozano L, Badrun R, Mat Amin N, Mohd Raih MF
    Genome Announc, 2014;2(3).
    PMID: 24812220 DOI: 10.1128/genomeA.00375-14
    Erwinia mallotivora was isolated from papaya trees infected with dieback disease, which were planted at the Malaysian Agricultural Research and Development Institute (MARDI), Malaysia. Here, we report a draft genome sequence of E. mallotivora BT-MARDI, which offers an important source of information for understanding pathogen and host interaction during papaya dieback development.
  20. Muid S, Abu Bakar NA, Abdul Rahman T, Tengku Ismail TS, Kholin SF, Suvorov AV, et al.
    Malays J Pathol, 2019 Dec;41(3):283-292.
    PMID: 31901913
    INTRODUCTION: Apart from inflammation and endothelial dysfunction, other key components in the development of atherogenesis include prothrombogenesis and oxidative stress. The effects of long-term confinement and isolation, exposure to radiation and different gravity forces during space travel could potentially increase the long-term risk of atherosclerosis. To the best of our knowledge, this is the first study determining the status of prothrombogenesis and oxidative stress in six cosmonauts subjected to the longest duration of confined isolation period of 520 days in preparation for prospective undetermined manned space travel to Mars.

    MATERIALS AND METHODS: This collaborative research between the National Space Agency (ANGKASA), Universiti Teknologi MARA, Malaysia and Institute of Biomedical Problems (IBMP), Russia was conducted at the Russian Academy of Sciences IBMP, Moscow, Russia. Six multi-national cosmonauts were assigned to live in a ground-based confined module for 520 days. Standard exercise and diet regime were instituted throughout the isolation phase. Six age, ethnic and gender-matched healthy, free-living ground controls were recruited in parallel. Serial serum and whole blood were analysed for biomarkers of prothrombogenesis [plasminogen activator inhibitor-1 (PAI-1) and homocysteine] and oxidative stress [oxidised low-density lipoprotein (ox-LDL) and malondialdehyde (MDA)].

    RESULTS: There were significantly lower concentrations of PAI-1 and homocysteine in cosmonauts during confinement compared to the controls. There were no significant differences seen in the concentrations of biomarkers of oxidative stress during confinement but there was a significant percentage change increment for serum MDA in cosmonauts.

    CONCLUSION: Long-term confinement decreased the risk of prothrombogenesis and this could be attributed to the exercise and diet regime which includes omega-3 fatty acids supplementation given to the crew members during their confinement period. However, oxidative damage could not be excluded and may be attributed to the influence of psychological stress during this prolonged confinement.

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