Displaying publications 21 - 40 of 59 in total

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  1. Ahmad MS, Suardi N, Shukri A, Nik Ab Razak NNA, Oglat AA, Makhamrah O, et al.
    Eur J Radiol Open, 2020;7:100257.
    PMID: 32944594 DOI: 10.1016/j.ejro.2020.100257
    Introduction: Hepatocellular carcinoma (HCC) is one of the most common cancer in the world, and the effectiveness of its treatment lies in its detection in its early stages. The aim of this study is to mimic HCC dynamically through a liver phantom and apply it in multimodality medical imaging techniques including magnetic resonance imaging (MRI), computed tomography (CT), and ultrasound.

    Methods and materials: The phantom is fabricated with two main parts, liver parenchyma and HCC inserts. The liver parenchyma was fabricated by adding 2.5 wt% of agarose powder combined with 2.6 wt% of wax powder while the basic material for the HCC samples was made from polyurethane solution combined with 5 wt% glycerol. Three HCC samples were inserted into the parenchyma by using three cylinders implanted inside the liver parenchyma. An automatic injector is attached to the input side of the cylinders and a suction device connected to the output side of the cylinders. After the phantom was prepared, the contrast materials were injected into the phantom and imaged using MRI, CT, and ultrasound.

    Results: Both HCC samples and liver parenchyma were clearly distinguished using the three imaging modalities: MRI, CT, and ultrasound. Doppler ultrasound was also applied through the HCC samples and the flow pattern was observed through the samples.

    Conclusion: A multimodal dynamic liver phantom, with HCC tumor models have been fabricated. This phantom helps to improve and develop different methods for detecting HCC in its early stages.

  2. Ahmad MS, Abuzar MA, Razak IA, Rahman SA, Borromeo GL
    Int J Dent Hyg, 2021 May;19(2):215-222.
    PMID: 33513278 DOI: 10.1111/idh.12488
    OBJECTIVE: Representing the largest proportion of healthcare workers, nurses play a significant role in oral health (OH) maintenance as part of a larger effort to promote holistic patient care. The study aims to determine nursing students' perceptions of OH education and practice in Malaysian and Australian nursing schools.

    MATERIALS AND METHODS: A self-administered questionnaire (content- and face-validated) survey was undertaken, classroom style, amongst final-year nursing students from selected Malaysian (n = 122, Response rate=97.6%) and Australian (n = 299, Response rate=54.7%) institutions. Quantitative data were analysed via Statistical Package for Social Science software (Chi-square and Fisher's exact tests, p ≤ 0.01).

    RESULTS: Significantly more Malaysian nursing students, compared to those in Australia, reported having encountered patients with OH issues (98.4% vs. 82.9%), namely halitosis (87.7% vs. 62.2%), oral ulcers (63.1% vs. 41.1%), oral/dental trauma (36.9% vs. 21.1%) and caries in children (28.7% vs. 7.7%). Less than half of Malaysian and Australian nursing students reported that they received adequate OH training (48.4% vs. 36.6%, p ≤ 0.01), especially in detecting oral cancer (18.0.0% vs. 22.6%, p ≤ 0.01) and preventing oral diseases (46.7% vs. 41.7%, p ≤ 0.01). Students in both countries demonstrated positive attitudes and believed in their role in OH care. Most students agreed that they should receive training in OH, especially in smoking cessation and providing OH care for patients with special needs. They also opined that a standardized evidence-based oral hygiene protocol is needed.

    CONCLUSION: Support for education and practice in this area of patient care suggested positive implications for further development of nurses' roles in OH promotion and management.

  3. Ahmad MS, Abuzar MA, Razak IA, Rahman SA, Borromeo GL
    Eur J Dent Educ, 2021 May;25(2):350-359.
    PMID: 33021010 DOI: 10.1111/eje.12611
    INTRODUCTION: A high degree of training is necessary to prepare student nurses for their roles as oral healthcare partners that can promote a holistic approach to health in the community. This study aims to determine the extent of oral health education in Australian and Malaysian nursing institutions, as well as investigate educators' perceptions of education and practice in this area of care.

    METHODOLOGY: An audio-recorded, semi-structured qualitative phone interview was conducted with the heads of 42 nursing schools across Australia (n = 35) and Malaysia (n = 7) during the 2015 academic year. Qualitative data were analysed via thematic analysis. Quantitative data, wherever appropriate, were measured for frequencies.

    RESULTS: The response rate was 34.2% (n = 12) and 71.4% (n = 5) for the Australian and Malaysian subjects, respectively. Findings revealed that although all the nursing schools measured provided didactic and clinical training in oral health, curriculum content, expected learning outcomes, amount of clinical exposure and assessment approach lacked consistency. Most nursing educators across both countries perceived an overloaded curriculum as a barrier to providing oral health education. Whilst educators demonstrated their support for training in this area of care, they expressed the need for an established national guideline that highlights the educational requirement for future nurses in oral health maintenance and their scope of practice.

    CONCLUSION: This study provides valuable information for further developing oral health education for nurses, to improve their competency and ultimately the health of the communities that they will serve.

  4. Ahmad MS, Radhi DSM, Rusle FF, Zul MF, Jalaluddin J, Baharuddin IH
    J Dent Educ, 2020 Nov;84(11):1219-1229.
    PMID: 32645212 DOI: 10.1002/jdd.12295
    OBJECTIVES: Preparing future dental school graduates to provide comprehensive patient care with empathy requires the completion of adequate training in such practice. This study was undertaken to investigate the effectiveness of the Photodentistry learning activity, which uses visual arts, in improving dental students' empathy and learning experience in comprehensive patient care.

    METHODS: All fourth-year undergraduate dental students (n = 69, response rate = 100%) participated in the Photodentistry learning activity developed by specialists from the areas of dentistry, arts, education, and psychology. A survey using the Toronto Empathy Questionnaire (TEQ) was conducted both pretest and posttest, followed by an open-ended written survey of their reflection towards the learning activity. Quantitative data were analyzed via paired t-test (P < 0.05), while qualitative data were analyzed using thematic analysis.

    RESULTS: There was a significant increase in both students' total mean empathy score and the individual scores for 8 (out of 16) items of the TEQ after the learning activity. Students stated that they had an improved understanding of managing patients in a comprehensive manner (e.g., managing medically compromised patients, performing treatment planning, communication with patients who have special health care needs). Students also reported the development of skills (e.g., observation, critical thinking) and positive attitudes (e.g., empathy, responsibility) towards patients.

    CONCLUSION: Photodentistry is an effective learning approach for improving dental students' empathy and learning experience in comprehensive patient care.

  5. Kamil WNWA, Zainal M, Omar AF, Jamaluddin TIBT, Ahmad MS
    Spec Care Dentist, 2021 Jan;41(1):129-134.
    PMID: 33128415 DOI: 10.1111/scd.12536
    In this report, we present the case of a 68-year-old male patient with a complaint of mastication and speech limitations one year after the prescription of a fixed bridge and the construction of "connected" crowns by a "street dentist." A thorough oral examination revealed a multilobulated swelling in the right buccal mucosa that extended to the buccal sulcus. The lesion, which was first noticed as a small, asymptomatic swelling by the patient one year prior, seemed to have undergone enlargement since the prostheses were prescribed. The lesion was completely removed via surgical excision under general anesthesia. Histopathological examination of the excisional mass revealed mature adipocytes and features consistent with conventional or classic lipoma. This case highlights the importance of receiving dental treatment from a qualified professional, whose responsibilities include performing a thorough examination of the oral cavity during treatment planning and delivery, review appointments, and regular dental visits. Such investigation is important to allow for early disease detection and control, especially for patients with complex treatment needs as well as those who may present with asymptomatic and slow-growing lesions such as lipomas.
  6. Ayub NAFM, Hamzah SH, Hussein AS, Rajali A, Ahmad MS
    Spec Care Dentist, 2021 Jan;41(1):111-117.
    PMID: 33080065 DOI: 10.1111/scd.12532
    Cleidocranial dysplasia (CCD) is a rare bone disorder. The main dental features are the presence of multiple retained deciduous teeth and supernumerary teeth, as well as unerupted permanent teeth. To date, CCD is managed by a combination approach, which consists of the extraction of deciduous and supernumerary teeth, followed by orthodontic traction of unerupted permanent teeth. This case highlights the management of a girl with CCD, who refused the recommended protocol. A 15-year-old Malay female presented with a complaint of retained deciduous teeth. Intraoral examination revealed multiple retained deciduous teeth. Radiographs showed numerous impacted supernumerary and unerupted permanent teeth. The patient opted to improve her facial appearance with a less aggressive treatment option. A composite build-up on all anterior maxillary deciduous teeth was carried out until the patient was ready to undergo surgical intervention.
  7. Ahmad MS, Ab Rahim MH, Alqahtani TM, Witoon T, Lim JW, Cheng CK
    Chemosphere, 2021 Aug;276:130128.
    PMID: 33714877 DOI: 10.1016/j.chemosphere.2021.130128
    Over the past decades, research efforts are being devoted into utilizing the biomass waste as a major source of green energy to maintain the economic, environmental, and social sustainability. Specifically, there is an emerging consensus on the significance of glycerol (an underutilised waste from biodiesel industry) as a cheap, non-toxic, and renewable source for valuable chemicals synthesis. There are numerous methods enacted to convert this glycerol waste to tartronic acid, mesoxalic acid, glyceraldehyde, dihydroxyacetone, oxalic acid and so on. Among these, the green electro-oxidation technique is one of the techniques that possesses potential for industrial application due to advantages such as non-toxicity process, fast response, and lower energy consumption. The current review covers the general understanding on commonly used techniques for alcohol (C1 & C2) conversion, with a specific insight on glycerol (C3) electro-oxidation (GOR). Since catalysts are the backbone of chemical reaction, they are responsible for the overall economy prospect of any processes. To this end, a comprehensive review on catalysts, which include noble metals, non-noble metals, and non-metals anchored over various supports are incorporated in this review. Moreover, a fundamental insight into the development of future electrocatalysts for glycerol oxidation along with products analysis is also presented.
  8. Adlina AR, Alisa-Victoria K, Shatriah I, Liza-Sharmini AT, Ahmad MS
    Clin Ophthalmol, 2014;8:2533-9.
    PMID: 25540578 DOI: 10.2147/OPTH.S71136
    There are limited data concerning the optic disc topography in normal-tension glaucoma (NTG) and primary open-angle glaucoma (POAG) patients living in Southeast Asian countries. This study aims to compare optic disc parameters in patients with NTG and POAG in Malaysia and to discuss the results in comparison with studies of NTG and POAG in other Asian countries.
  9. Mahmood IA, Morshidi DNA, Hamzah SH, Baharuddin IH, Ahmad MS
    Eur J Dent Educ, 2021 Aug;25(3):550-555.
    PMID: 33217767 DOI: 10.1111/eje.12632
    OBJECTIVE: This study sought to assess dental students' training and experiences in addressing traumatic dental injury (TDI), and, more specifically, their knowledge of TDI management in children.

    METHODS: All Year 1 to Year 5 dental students (n = 413; response rate = 72.9%) were invited to participate in an online, self-administered survey, which was based on a validated questionnaire. Quantitative data were analysed via chi-squared test (p 

  10. Farooq U, Ali MU, Hussain SJ, Ahmad MS, Zafar A, Ghafoor U, et al.
    Polymers (Basel), 2021 Jun 22;13(13).
    PMID: 34206302 DOI: 10.3390/polym13132035
    The influence of nanodiamonds (NDs) on the thermal and ablative performance of carbon-fiber-reinforced-epoxy matrix compositeswas explored. The ablative response of the composites with 0.2 wt% and 0.4 wt% NDs was studied through pre-and post-burning morphologies of the composite surfaces by evaluation of temperature profiles, weight loss, and erosion rate. Composites containing 0.2 wt% NDs displayed a 10.5% rise in erosion resistance, whereas composites containing 0.4 wt% NDs exhibited a 12.6% enhancement in erosion resistance compared to neat carbon fiber-epoxy composites. A similar trend was witnessed in the thermal conductivity of composites. Incorporation of composites with 0.2 wt% and 0.4 wt% NDs brought about an increase of 37 wt% and 52 wt%, respectively. The current study is valuable for the employment of NDs in carbon fiber composite applications where improved erosion resistance is necessary.
  11. Omar B, Kurahashi H, Jeffery J, Yasohdha N, Lau SY, John MC, et al.
    Trop Biomed, 2007 Dec;24(2):99-100.
    PMID: 18209716
    Fannia pusio (Wiedemann) (Diptera: Fanniidae) is newly recorded from Malaysia. This record is based on 1male symbol 1female symbol from Sarawak, east Malaysia and 1male symbol 2female symbol from Selangor, peninsular Malaysia. It is included in the pusio group of Fannia wherein are included Fannia femoralis (Stein), Fannia howardi Malloch, Fannia trimaculata (Stein), Fannia leucosticta (Meigen) and Fannia punctiventris Malloch. The male of Fannia pusio is differentiated from other members of the group by the following features: hind femur with a swelling bearing a number of setae that are usually curled at tip; squamae creamy; tergite 1+2 broadly grey dusted at sides.
  12. Zainul R, Abd Azis N, Md Isa I, Hashim N, Ahmad MS, Saidin MI, et al.
    Sensors (Basel), 2019 Feb 22;19(4).
    PMID: 30813385 DOI: 10.3390/s19040941
    This paper presents the application of zinc/aluminium-layered double hydroxide-quinclorac (Zn/Al-LDH-QC) as a modifier of multiwalled carbon nanotubes (MWCNT) paste electrode for the determination of bisphenol A (BPA). The Zn/Al-LDH-QC/MWCNT morphology was examined by a transmission electron microscope and a scanning electron microscope. Electrochemical impedance spectroscopy was utilized to investigate the electrode interfacial properties. The electrochemical responses of the modified electrode towards BPA were thoroughly evaluated by using square-wave voltammetry technique. The electrode demonstrated three linear plots of BPA concentrations from 3.0 × 10-8⁻7.0 × 10-7 M (R² = 0.9876), 1.0 × 10-6⁻1.0 × 10-5 M (R² = 0.9836) and 3.0 × 10-5⁻3.0 × 10-4 M (R² = 0.9827) with a limit of detection of 4.4 × 10-9 M. The electrode also demonstrated good reproducibility and stability up to one month. The presence of several metal ions and organic did not affect the electrochemical response of BPA. The electrode is also applicable for BPA determination in baby bottle and mineral water samples with a range of recovery between 98.22% and 101.02%.
  13. Sami W, Alabdulwahhab KM, Ab Hamid MR, Alasbali TA, Alwadani FA, Ahmad MS
    PMID: 32019083 DOI: 10.3390/ijerph17030858
    Dietary management is considered as a major step in assessing a patient's knowledge related to nutritional aspects, treatment, and complications of diabetes. Diabetes patients frequently face difficulty in identifying the recommended diet, including its quality and quantity. In the Kingdom of Saudi Arabia (KSA), sedentary lifestyle, along with food choices and portion sizes, have increased considerably and this has resulted in the soaring risk of diabetes. In addition, there is paucity of literature focusing on the Dietary Knowledge (DK) of type 2 diabetics in KSA. The study aimed to assess and evaluate the DK of type 2 diabetics. An analytical cross-sectional study was conducted among 350 type 2 diabetics using a valid and reliable self-prepared questionnaire comprising of 21 questions. Results showed that type 2 diabetics had an overall poor DK (28.57%). Sub-group analysis further revealed that diabetes patients had poor knowledge related to the consumption of carbohydrates and food choices, whereas they had good knowledge related to lipids and fats, proteins and food types. The role of diet in controlling of diabetes is considered imperative, but still, diabetes patients are unaware how they should approach this issue. The patient empowerment approach can be used to counsel patients with a poor DK. Primary care physicians and dietitians should work together and carry out individualized, tailored and patient-centered dietary education sessions.
  14. Ahmad MS, Suardi N, Shukri A, Mohammad H, Oglat AA, Alarab A, et al.
    J Med Ultrasound, 2020 01 28;28(1):7-16.
    PMID: 32368444 DOI: 10.4103/JMU.JMU_4_19
    Liver phantoms have been developed as an alternative to human tissue and have been used for different purposes. In this article, the items used for liver phantoms fabrication are mentioned same as in the previous literature reviews. Summary and characteristics of these materials are presented. The main factors that need to be available in the materials used for fabrication in computed tomography, ultrasound, magnetic resonance imaging, and nuclear medicine were analyzed. Finally, the discussion focuses on some purposes and aims of the liver phantom fabrication for use in several areas such as training, diagnoses of different diseases, and treatment planning for therapeutic strategies - for example, in selective internal radiation therapy, stereotactic body radiation therapy, laser-induced thermotherapy, radiofrequency ablation, and microwave coagulation therapy. It was found that different liver substitutes can be developed to fulfill the different requirements.
  15. Ahmad MS, Abuzar MA, Razak IA, Rahman SA, Borromeo GL
    J Dent Educ, 2017 Sep;81(9):1068-1076.
    PMID: 28864788 DOI: 10.21815/JDE.017.060
    Education in oral health is important to prepare future medical professionals for collaborative roles in maintaining patients' oral health, an important component of general health and well-being. The aims of this study were to determine the perceptions of medical students in Malaysia and Australia of the quality of their training in oral health care and their perceptions of their professional role in maintaining the oral health of their patients. A survey was administered in the classroom with final-year Malaysian (n=527; response rate=79.3%) and Australian (n=455; response rate: 60%) medical students at selected institutions in those countries. In the results, most of these medical students reported encountering patients with oral health conditions including ulcers, halitosis, and edentulism. A majority in both countries reported believing they should advise patients to obtain regular dental check-ups and eat a healthy diet, although they reported feeling less than comfortable in managing emergency dental cases. A high percentage reported they received a good education in smoking cessation but not in managing dental trauma, detecting cancerous lesions, or providing dietary advice in oral disease prevention. They expressed support for inclusion of oral health education in medical curricula. These students' experience with and perceptions of oral health care provide valuable information for medical curriculum development in these two countries as well as increasing understanding of this aspect of interprofessional education and practice now in development around the world.
  16. Mostafa SA, Mustapha A, Mohammed MA, Ahmad MS, Mahmoud MA
    Int J Med Inform, 2018 04;112:173-184.
    PMID: 29500017 DOI: 10.1016/j.ijmedinf.2018.02.001
    Autonomous agents are being widely used in many systems, such as ambient assisted-living systems, to perform tasks on behalf of humans. However, these systems usually operate in complex environments that entail uncertain, highly dynamic, or irregular workload. In such environments, autonomous agents tend to make decisions that lead to undesirable outcomes. In this paper, we propose a fuzzy-logic-based adjustable autonomy (FLAA) model to manage the autonomy of multi-agent systems that are operating in complex environments. This model aims to facilitate the autonomy management of agents and help them make competent autonomous decisions. The FLAA model employs fuzzy logic to quantitatively measure and distribute autonomy among several agents based on their performance. We implement and test this model in the Automated Elderly Movements Monitoring (AEMM-Care) system, which uses agents to monitor the daily movement activities of elderly users and perform fall detection and prevention tasks in a complex environment. The test results show that the FLAA model improves the accuracy and performance of these agents in detecting and preventing falls.
  17. Anwar DS, Mohd Yusof MYP, Ahmad MS, Md Sabri BA
    Children (Basel), 2022 Nov 29;9(12).
    PMID: 36553300 DOI: 10.3390/children9121855
    Oral health is a likely source of health inequalities in children with special health care needs (CSHCN), according to multiple studies. This systematic review aimed to explore the evidence of family influence—as well as family features, such as societal variables and parents’ perspectives—on these children’s dental caries status. Embase, Ebsco, Scopus, PubMed, and Web of Science databases were all searched. All cross-sectional research published on the variables of family impact ranging from 2010 to 2021 were considered. The DMFT and dmft index was utilised for the report data of dental caries, whereas the National Heart, Lung, and Blood Institute (NHLBI) was used for the purposes of assessing quality. Of the 3861 records identified, 14 were eligible. Further, most of the studies had a caries prevalence of over 50%, (p-value < 0.005). Family influences imparted a significant relationship and association towards the dental caries status of the demographic being studied. The influences on the children included tooth brushing behaviour, parents’ education level, parents’ occupation level, diet pattern, dental visit, snacking frequency, parents’ psychological status, family size, and parents’ knowledge towards oral health. Future research should further explore the family functioning domains, specifically among the CSHCN population. This study was registered on PROSPERO, number CRD42021274923.
  18. Munir MA, Jamal JA, Said MM, Ibrahim S, Ahmad MS
    Scientifica (Cairo), 2023;2023:5444256.
    PMID: 37051152 DOI: 10.1155/2023/5444256
    The toxicity of histamine has attracted numerous researchers to develop a method for histamine determination purposes. The Food and Drug Administration (FDA) unequivocally prohibits the consumption of histamine above 50 mg·kg-1. Thus, an innovation in histamine detection in fish has been developed in this research. The investigation of the histamine level in fish has been conducted by using an electrochemical sensor approach and producing a polymer via molecularly imprinted polymer (MIP) on a screen-printed electrode. The technique was validated by assessing the shifts in electron shifting using the cyclic voltammetry (CV) approach and electrochemical impedance spectroscopy (EIS), whereas differential pulse voltammetry (DPV) was applied to validate the sensor method. The instruments showed a linear response ranging from 1-1000 nmol·L-1, with a detection limit of MIP/SPE at 1.765 nmol·L-1 and 709 nmol·L-1 for the NIP/SPE, respectively. The sensing technique was employed to determine the histamine level in selected samples at room temperature (25°C). The outcomes of this study indicated that the validated chemical sensor allowed accurate and precise detection of fish samples and can be categorized as a simple approach. The instrument is inexpensive and suitable for on-site detection.
  19. Mohd Yani AA, Ahmad MS, Ngah NA, Md Sabri BA
    Eur J Dent Educ, 2023 Aug;27(3):449-456.
    PMID: 35579452 DOI: 10.1111/eje.12826
    Gauging dental graduates' perceptions of their university training and of how it prepares them for professional practice is useful in measuring the quality and adequacy of the curriculum to which they were exposed.

    OBJECTIVES: This study aimed to evaluate the perceptions of dental graduates' educational environment as well as preparedness to practice, and how these two components are correlated.

    METHODS: A self-administered, validated questionnaire, developed from previous studies, was distributed to dental graduates of a public Malaysian university (n = 178, response rate = 60%) via online and postal surveys. Bivariate analyses were carried out using Spearman's rank-order correlation (Spearman's Rho, significance level p 

  20. Gul R, Hanif MU, Gul F, Rehman HM, Saleem M, Ahmad MS, et al.
    Mol Biotechnol, 2023 Jul;65(7):1062-1075.
    PMID: 36437440 DOI: 10.1007/s12033-022-00612-y
    The current study focuses on molecular cloning, expression and structural characterization of growth hormone-receptor (GHR) and its extracellular domain as growth hormone binding protein (GHBP) from the liver of Nili-Ravi buffalo (Bubalus bubalis; Bb). RNA was isolated, genes were amplified by reverse transcriptase-polymerase chain reaction and sequence was characterized. The BbGHR sequence showed three amino acid variations in the extracellular domain when compared with Indian BbGHR. For the production of full length BbGHR and BbGHBP in Escherichia coli (E. coli) BL21 (RIPL) Codon Plus, expression plasmids were constructed under the control of T7lac promoter and isopropyl β-D thiogalactopyranoside was used as an inducer. BbGHR and BbGHBP were expressed as inclusion bodies at ~ 40% and > 30% of the total E. coli proteins, respectively. The BbGHBP was solubilized and refolded by dilution method using cysteine-cystine redox potential. The recombinant BbGHBP was purified and biological activity was checked on HeLa cell lines showing increase cell proliferation in the presence of ovine GH (oGH), hence justifying the increase in the half-life of GH in the presence of BbGHBP. For the molecular interactions of oGH-BbGHBP multiple docking programs were employed to explore the subsequent interactions which showed high binding affinity and presence of large number of hydrogen bonds. Molecular Dynamics studies performed to examine the stability of proteins and exhibited stable structures along with favorable molecular interactions. This study has described the sequence characterization of BbGHR in Nili-Ravi buffaloes and hence provided the basis for the assessment of GH-GHR binding in other Bovidae species.
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