Browsing by Author "Noor Azzizah Omar"
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Publication Application And Relevancy Of Anatomy Curriculum In The Clinical Years: A Malaysian University Experience(Penerbit Universiti Sains Malaysia, 2021) ;Rani Sakaran ;Noor Azzizah Omar ;Normaliza Omar ;Suhaila Sanip ;Ku Mastura Ku Mohd Noor ;Mohd Hairulhisyam Ngatiman ;Nadeeya ‘Ayn Umaisara Mohamad NorSharifa Abdul AzizHuman anatomy is one of the fundamental subjects in medical and health education. In recent years, anatomy teaching in Universiti Sains Islam Malaysia (USIM) has undergone a major transition from a highly detailed, didactic method to student-centred pedagogy and clinical correlations. Hence, this study aimed to assess the perception of the anatomy curriculum amongst USIM clinical students and to evaluate the clinicians’ cognisance of their students’ anatomical knowledge and application. A cross-sectional study was conducted on 232 clinical students (fourth-, fifth- and final-year) and 32 clinicians from various disciplines with the validated questionnaires. Descriptive analysis was performed to analyse the findings regarding students’ and clinicians’ perceptions. The majority of the students agreed that the anatomy curriculum was adequately covered in the pre-clinical years except for the imaging and clinical correlation classes. In terms of the teaching method, most of the students perceived that the tutorials (99.2%), practical sessions (98.7%), lectures (97.4%) and problembased learning (PBL) (96.1%) were the best approaches in understanding anatomy comprehensively. Results also indicated that the practical sessions (99.1%), lectures (94.8%), tutorials (94.8%) and PBL (93.9%) were the best methods in retaining anatomy knowledge. Besides, 62.9% of students strongly agreed that objective structured practical examination (OSPE) was the most helpful assessment for their anatomical knowledge retention. The majority of the clinicians perceived their clinical year students had a satisfactory level of anatomical knowledge (n = 21, 65.6%) and also believed that the anatomical correlation classes were essential for their disciplines. Students recognised the value of the current teaching methodology for their knowledge retention and comprehension. However, both clinicians and students felt there were limited opportunities for clinical application during teaching and learning. It is therefore imperative to implement appropriate restructuring to the current anatomy curriculum to address students’ needs and preferences for their future medical practice. - Some of the metrics are blocked by yourconsent settings
Publication Measurement of temperature induced in bone during drilling in minimally invasive foot surgery(Elsevier Ltd, 2018) ;Noor Azzizah OmarJohn C. McKinleyIntroduction: There has been growing interest in minimally invasive foot surgery due to the benefits it delivers in post-operative outcomes in comparison to conventional open methods of surgery. One of the major factors determining the protocol in minimally invasive surgery is to prevent iatrogenic thermal osteonecrosis. The aim of the study is to look at various drilling parameters in a minimally invasive surgery setting that would reduce the risk of iatrogenic thermal osteonecrosis. Method: Sixteen fresh-frozen tarsal bones and two metatarsal bones were retrieved from three individuals and drilled using various settings. The parameters considered were drilling speed, drill diameter, and inter-individual cortical variability. Temperature measurements of heat generated at the drilling site were collected using two methods; thermocouple probe and infrared thermography. The data obtained were quantitatively analysed. Results: There was a significant difference in the temperatures generated with different drilling speeds (p < 0.05). However, there was no significant difference in temperatures recorded between the bones of different individuals and in bones drilled using different drill diameters. Thermocouple showed significantly more sensitive tool in measuring temperature compared to infrared thermography. Conclusion: Drilling at an optimal speed significantly reduced the risk of iatrogenic thermal osteonecrosis by maintaining temperature below the threshold level. Although different drilling diameters did not produce significant differences in temperature generation, there is a need for further study on the mechanical impact of using different drill diameters. - Some of the metrics are blocked by yourconsent settings
Publication Neuroprotective Effects Of Neurotrophin-3 In Mptp-induced Zebrafish Parkinson’s Disease Model(Frontiers, 2023) ;Noor Azzizah Omar ;Jaya KumarSeong Lin TeohIntroduction: Neurotrophin-3 (NT3) is a neuroprotective growth factor that induces the development, maintenance and survival of neurons. This study aims to localize NT3-expressing cells in the adult zebrafish brain and examine the role of NT3 in a zebrafish Parkinson’s disease (PD) model.Methods: Cellular localization of NT3 in adult zebrafish brains was conducted using in situ hybridization. Subsequently, adult zebrafish were injected intraperitoneally with 100 μg/g of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) and treated with 400 ng/g body weight of recombinant NT3 (rNT3) via intracranial injection 24 h following MPTP injection. The fish were assessed for neurobehavioral, gene expression, immunohistology, and protein analysis on days 3, 5 and 10 post-MPTP injection. Results: Our findings showed that NT3 was extensively expressed throughout the adult zebrafish brain in neurons. Administration of rNT3 has significantly improved locomotor activity, with upregulation of th1, dat, ntf3 and bdnf gene expressions compared to MPTP-induced zebrafish. Dopaminergic neurons were also significantly increased in the zebrafish brain following rNT3 treatment. ELISA analysis reported raised GST and decreased caspase-3 levels on day 3 of assessment. The trophic changes of rNT3, however, decline as the assessment day progresses. Conclusion: This study is the first to examine the role of NT3 in the adult zebrafish PD model. NT3 has remarkable trophic effects in the zebrafish PD model. However, further study is needed to examine the dosage requirements and long-term effects of NT3 in PD. - Some of the metrics are blocked by yourconsent settings
Publication Neurotrophin-3 and Neurotrophin-4: The Unsung Heroes that Lies behind the Meninges(Elseiver, 2022) ;Noor Azzizah Omar ;Jaya KumarSeong Lin TeohNeurotrophin is a growth factor that regulates the development and repair of the nervous system. From all factors, two pioneer groups, the nerve growth factor (NGF) and brain derived neurotrophic factor (BDNF), have been widely explored for their role in disease pathogenesis and potential use as therapeutic agents. Nonetheless, neurotrophin-3 (NT3) and neurotrophin-4 (NT4) also have promising potential, albeit less popular than their counterparts. This review focuses on the latter two factors and their roles in the pathogenesis of brain disorders and potential therapies. An extensive literature search of NT3 and NT4 with their receptors, the TrkB and TrkC on the nervous system were extracted and analyzed. We found that NT3 and NT4 are not only involved in the pathogenesis of some neurodegenerative diseases, but also have promising therapeutic potential on injury- and vascular-related nervous system disease, neuropsychiatry, neurodegeneration and peripheral nerve diseases. In conclusion, the role of NT3 and NT4 should be further emphasized, and more studies could be explored on the potential use of these neurotrophins in the human study. - Some of the metrics are blocked by yourconsent settings
Publication Parkinson’s Disease Model In Zebrafish using Intraperitoneal MPTP Injection(Frontiersin, 2023) ;Noor Azzizah Omar ;Jaya KumarSeong Lin TeohIntroduction: Parkinson’s disease (PD) is the second most common neurodegenerative disease that severely affects the quality of life of patients and their family members. Exposure to 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) has been shown to reflect behavioral, molecular, and proteomic features of PD. This study aimed to assess the protocol for inducing PD following MPTP injection in adult zebrafish. Methods: Fish were injected with 100 μg/g of MPTP intraperitoneally once or twice and then assessed on days 1 to 30 post-injection. Results: Between one-time and two-time injections, there was no significant difference in most locomotor parameters, expressions of tyrosine hydroxylase-2 (th2) and dopamine transporter (dat) genes, and dopaminergic neurons (tyrosine hydroxylase positive, TH+ cells) counts. However, caspase-3 levels significantly differed between one- and two-time injections on the day 1 assessment. Discussion: Over a 30-day period, the parameters showed significant differences in swimming speed, total distance traveled, tyrosine hydroxylase-1 (th1) and dat gene expressions, caspase-3 and glutathione protein levels, and TH+ cell counts. Days 3 and 5 showed the most changes compared to the control. In conclusion, a one-time injection of MPTP with delayed assessment on days 3 to 5 is a good PD model for animal studies. - Some of the metrics are blocked by yourconsent settings
Publication Reheated Palm Oil Consumption And Risk Of Atherosclerosis: Evidence At Ultrastructural Level(Hindawi Publishing Corporation, 2012) ;Tan Kai Xian ;Noor Azzizah Omar ;LowWen Ying ;Aniza Hamzah ;Santhana Raj ;Kamsiah Jaarin ;Faizah OthmanFarida HussanBackground: Palm oil is commonly consumed in Asia. Repeatedly heating the oil is very common during food processing. Aim: This study is aimed to report on the risk of atherosclerosis due to the reheated oil consumption. Material and Methods: Twenty fourmale Sprague Dawley rats were divided into control, fresh-oil, 5 times heated-oil and 10 times heated-oil feeding groups. Heated palm oil was prepared by frying sweet potato at 180?C for 10 minutes. The ground standard rat chows were fortified with the heated oils and fed it to the rats for six months. Results: Tunica intima thickness in aorta was significantly increased in 10 times heated-oil feeding group (P < 0.05), revealing a huge atherosclerotic plaque with central necrosis projecting into the vessel lumen. Repeatedly heated oil feeding groups also revealed atherosclerotic changes including mononuclear cells infiltration, thickened subendothelial layer, disrupted internal elastic lamina and smooth muscle cells fragmentation in tunica media of the aorta. Conclusion:The usage of repeated heated oil is the predisposing factor of atherosclerosis leading to cardiovascular diseases. It is advisable to avoid the consumption of repeatedly heated palm oil. - Some of the metrics are blocked by yourconsent settings
Publication Sudden Transition In Anatomy Education: Assessing The Perception Of Anatomy Course Delivery Among Medical Students During COVID-19 Pandemic(USIM Press, 2021-08) ;Amira Raudhah Abdullah ;Ku Mastura Ku Mohd Noor ;Mohd Hairulhisyam Ngatiman ;Mohamed Hanief KhalidNoor Azzizah OmarCoronavirus disease 2019 (COVID-19) pandemic has undoubtedly impacted anatomy education. This has led to a vast shift from a face to face (F2F) session to a complete online session and practical demonstration. Nonetheless, this pandemic provides an opportunity for anatomy educationists to embark on an alternative delivery of anatomy education via an online platform. The aim of this study was to evaluate the students’ perception of the online teaching and learning in anatomy course delivery among the first-year medical students in Universiti Sains Islam Malaysia (USIM). A total of 90 first-year medical students partook in an online questionnaire-based survey after semester completion of online anatomy course delivery. Synchronous online lectures conferred positive responses from the students with 73.0% of the students perceived effective communication with lecturers through the online platform. Out of these, 71.6% inclined towards online lectures as it allows them the flexibility to record the lecture and revisit it. Gross anatomy practical sessions were executed asynchronously via pre-recorded video with an additional supplementary quiz on USIM’s Global Open Access Learning system (GOALS) while histology practical was executed synchronously via virtual slide demonstration. A total of 80.1% students felt convenient with histology practical, however, only 48.3% students responded positively to the gross practical. Overall, 76.4% students favoured the conventional practical compared to the online sessions. Meanwhile, an online examination had disputable responses between the different exam formats whereby 71.9% students perceived that Multiple Choice Questions (MCQ) were conducted conveniently contradictory to the Modified Essay Questions (MEQ) in which only 34.9% students responded positively. In addition, 57.3% students disclosed multiple setbacks during the Objective Structures Practical Exam (OSPE). The extensive and impromptu changes in the study technique have received multiple responses from the students. Overall, the students preferred an online platform for didactic sessions but a real live classroom for practical sessions.