1.Quantum Physics Perspective on Electromagnetic and Quantum Fields Inside the Brain
Malaysian Journal of Medical Sciences 2020;27(1):1-5
Brain energy is associated commonly with electrochemical type of energy. This energy
is displayed in the form of electromagnetic waves or better known as brainwaves. This concept is
a classical concept (Newtonian) in which the studied object, that is the brain is viewed as a large
anatomical object with its functional brainwaves. Another concept which incorporates quantum
principles in it can also be used to study the brain. This perspective viewing the brain as purely
waves, including its anatomical substrate. Thus, there are two types of energy or field exist in our
brain: electromagnetic and quantum fields. Electromagnetic field is thought as dominant energy in
purely motor and sensory inputs to our brain, whilst quantum field or energy is perceived as more
influential in brain cognitions. The reason for this notion lies in its features which is diffused, nondeterministic, varied, complex and oneness.
2.Tranexamic acid in traumatic brain injury
Nelson Kok Bing Yap ; Albert Sii Hieng Wong ; Zamzuri Idris
The Medical Journal of Malaysia 2020;75(6):660-665
General Hospital. In all 167 of them wereadministered with TXA and another 167 of the patients werenot. The primary outcome expected is the number of goodoutcomes in isolated TBI patients given TXA. Goodoutcome is defined by Glasgow Outcome Score-Extended(GOSE) of five and above. Secondary outcome was clotexpansion of an intracranial bleed seen on the first scan thathad expanded by 25% or more on any dimension on thesecond scan. Results: The TXA did not show significant trend of goodoutcome in terms of GOSE (p=0.763). However, for moderateand severe acute subdural haemorrhage (SDH) subgroups,there was a significant difference (p=0.042). Clot expansionwas present in 14 patients (12.7%) with TXA given and in 54patients (38.8%) without TXA. The difference wasstatistically significant (p<0.001). Of the patients whoreceived TXA, there was one case (0.6%) of deep veinthrombosis. Apart from that, TXA showed non-significanttrend in reducing mortality (p=0.474). Conclusions: Tranexamic acid reduces the rate of clotexpansion in TBI by 26.1% (38.8-12.7%) without significantlyincreasing the risk of a thrombotic event. It can also improvethe outcome of moderate and severe TBI patients with acuteSDH.
3.The use of magnetic resonance phase-contrast cine in Chiari malformation with syringomyelia
Goh Chin Hwee ; Mohammad Radzi Hamzah ; Regunath Kandasamy ; Abdul Rahman Izaini Ghani ; Wong Sii Hieng ; Zamzuri Idris ; Jafri Malin Abdullah
The Medical Journal of Malaysia 2020;75(6):666-671
mesodermal origin and is commonly associated withsyringomyelia. Foramen magnum decompression is thefirst-line of standard treatment in symptomatic patients witha confirmed radiographic diagnosis. Magnetic resonance(MR) cine allows accurate evaluation of cerebrospinal fluid(CSF) physiology at the craniovertebral junction but oftenthis is under-utilised in Malaysia. Methods: In this series, we looked into nine cases of CM withsyringomyelia from clinical and radiological perspectivebefore and after surgery. The radiological parameters wereherniated tonsillar length, syrinx: cord ratio, syrinx lengthand diameter. Flow velocity and morphologic changes inChiari were illustrated. Results: Seven patients showed either reduction in syrinxlength, syrinx: cord ratio or both postoperatively. Clinicalrecovery somewhat varied in motor and sensory symptoms.Four patients gained better functional grade in modifiedRankin scale (MRS) while the rest remained similar. Thestudy highlighted the advantage of CSF flow dynamicsinformation over MR anatomical radiographic improvementin addressing the neurologic and functional recovery. Wealso discussed the practicality of cine sequence inpreoperative patient selection, syrinx analysis andpostoperative flow evaluation in anticipation of clinicaloutcome. Conclusion: Phase-contrast cine MRI is a useful tooldictated by resource availability. We recommend its routineuse in preoperative analysis and subsequent observationalfollow-up after surgery.
4.A Dual Genetic Alteration (Mitochondrial and Nuclear DNA): First Case in Malaysia Detected in Glioblastoma Multiforme
Abdul Aziz Mohamed Yusoff ; Wan Salihah Wan Abdullah ; Alarmelu Nithya Ramanathan ; Jafri Malin Abdullah ; Zamzuri Idris
Malaysian Journal of Medicine and Health Sciences 2020;16(No.2):332-335
Although the precise etiology of Glioblastoma multiforme (GBM, WHO grade IV) remains unknown, its progression is believed to be driven by the accumulation of multiple genetic alterations. Here, we report a case of a patient who developed GBM, and associated with dual alterations, particularly 4977-bp deletion in mtDNA (mtDNA4977) and p.Arg132His (R132H) mutation in IDH1. A 35-year old Malaysian woman patient who primary diagnosed with astrocytoma WHO grade I and subsequently after four years developed a GBM, was detected with a mtDNA4977. This deletion appears to be a sporadic mutation. Additionally, analysis of patient’s tumor tissue also found to harbor a heterozygous IDH1 R132H mutation. This represents the first case report of coexisting mtDNA4977 together with IDH1 R132H mutation in a Malaysian patient of GBM. The findings of dual alterations could be of therapeutic benefit if these alterations were justified to be contributing to GBM growth and aggressiveness.
5.Brain Tumours and Their Metabolic Profiles by Magnetic Resonance Spectroscopy
Manah Chandra Changmai ; Mohammed Faruque Reza ; Zamzuri idris ; Regunath Kandasamy ; Kastury Gohain
Malaysian Journal of Medicine and Health Sciences 2020;16(No.3, September):162-168
Introduction: Intracranial brain tumour like meningiomas and glioblastomas are most prevalent tumour. The metastasis to the brain is one of the major issues in the tumours of the central nervous system. The diagnosis of metastatic and primary brain tumour is incomprehensible with standard magnetic resonance imaging (MRI). The magnetic resonance spectroscopy (MRS) is basically performed in standard clinical setting for diagnosing and tracking the brain tumour. Method: It is a retrospective study containing 53 patients with MRS. The patients with metastatic tumour (n=10), glioblastomas (n=8) and meningiomas (n=20) are included in the study. Single voxel technique is applied in the tumour core to determine the metabolites. The tumour N-acetyl aspartate (NAA), Choline (Cho), Creatine (Cr), Lactate, Alanine and lipids were analysed. The ratios of NAA/Cr, Cho/NAA and Cho/Cr were recorded and compared between the three tumours. The metabolites were detected between short echo time (TE) to long echo time (TE) during MRS. Results: There is a sharp fall of NAA peak in metastatic tumour. The resonance of creatine, lactate and alanine is higher in glioblastomas. A high lipid mean value of 3.13(0.17) is seen in metastatic tumour. The ROC curve shows a low NAA/Cr specificity of 46.7%, high sensitivity of 83.3% in Cho/NAA and Cho/Cr ratio. Conclusion: The metabolic profiles of metastatic brain tumour, glioblastomas and meningioma illustrate a divergence in their description that will assist in planning therapeutic and surgical intervention of these tumours.
6.A Retrospective Study on the First Cerebrospinal Fluid Taken from External Ventricular Drainage Insertion in Meningitis Patients with Hydrocephalus
Asma ; Mohamad Afifi ; Jafri Malin Abdullah ; Johari Adnan Siregar ; Zamzuri Idris
Malaysian Journal of Medical Sciences 2019;26(5):64-73
Background: Ventriculoperitoneal (VP) shunting is a permanent form of cerebrospinal
fluid (CSF) diversion that can be performed for hydrocephalus. Sterility of the CSF is an important
prerequisite for permanent shunt placement. It has been hypothesised that in early stage of
meningitis, ventricular CSF remains sterile. A study is conducted on the first CSF sample taken
from patients suspected to have meningitic hydrocephalus.
Method: A retrospective review case records of patients who had undergone external
ventricular drainage (EVD) for suspected meningitic hydropcephalus in Hospital Sultanah Aminah
Johor Bahru (HSAJB), Johor, Malaysia.
Results: Fifty-one cases were analysed. Mean age of patients was 37.27 years old, with
64.7% of them was male. Univariate analysis revealed that the main parameters to determine CSF
sterility were CSF glucose (95% CI, 0.852, 10.290, P = 0.001), CSF protein (CI 95%, 0.722, 14.898,
P < 0.001), CSF gram stain (95% CI, 16.437, 0.877, P < 0.001 ) and CSF appearance ( 0.611, 6.362,
P = 0.012). Multivariate analysis had proven that gram stain was the main parameter in the CSF
analysis (CI 95%, 16.437, 0.029, P = 0.016). No significant differences in CSF results were observed
from EVD and lumbar puncture.
Conclusion: The most significant parameter in CSF to determine infection was gram stain.
7.Anti-Cancer Properties of Heterotrigona itama sp. Honey Via Induction of Apoptosis in Malignant Glioma Cells
Farizan Ahmad ; Priatharsine Seerangan ; Mohd Zulkifli Mustafa ; Zul Faizuddin Osman ; Jafri Malin Abdullah ; Zamzuri Idris
Malaysian Journal of Medical Sciences 2019;26(2):30-39
Background: There has been increasing evidence showing that stingless bee honey
exhibits anti-oxidant, anti-inflammatory and anti-cancer properties. Pharmacologically-active
components in honey such as flavonoids and phenolic constituents are known to contribute
to its medicinal benefits. To the best of our knowledge, this is the first study on evaluating anticancer
effects of locally-produced Malaysian stingless bee honey from Heterotrigona itama sp. on
malignant glioma cells.
Methods: Proliferation and apoptosis studies of U-87 MG cells following stingless bee
honey treatment were carried out using MTS assay and acridine orange/propidium iodide dual
staining, respectively.
Results: Results demonstrated time and dose-dependent cytotoxicity using 0.625%, 1.25%
and 10% stingless bee honey (P < 0.05). IC50 values were calculated using cells treated with 10%
stingless bee honey. It was also observed that 10% stingless bee honey induced nuclear shrinkage,
chromatin condensation and nucleus fragmentation, indicating that cellular changes were
consistent with the apoptotic characteristics of the cells.
Conclusion: These data provide a good basis for further evaluation of the medicinal
properties of stingless bee honey from Heterotrigona itama sp. This source of honey may serve as
a potential therapy for malignant glioma.
8.The First Awake Clipping of a Brain Aneurysm in Malaysia and in ASEAN: Achieving International Standards
Zamzuri IDRIS ; Regunath KANDASAMY ; Neoh Yee YIK ; Jafri Malin ABDULLAH ; Wan Mohd Nazaruddin Wan Hassan ; Mohd Erham Mat Hassan
Malaysian Journal of Medical Sciences 2018;25(1):1-4
World-renowned neurosurgeon, Professor Saleem Abdulrauf, has been featured in several medical journals for his successful “Awake Brain Aneurysm Surgery”. Regarded as a “world first”, this surgery, involves clipping un-ruptured brain aneurysms while patients are awake. Only one or two neurosurgery centres worldwide are capable of this. Performing the surgery while the patient is awake lowers risks of brain ischemia with neurological deficits and ventilator associated morbidities. The technique has been viewed as the start of a new era in brain surgery. Physicians from the Universiti Sains Malaysia (USM) School of Medical Sciences, at the Health Campus in Kelantan, headed by Professor Dr Zamzuri Idris (neurosurgeon) and Dr Wan Mohd Nazaruddin Wan Hassan (neuroanaesthetist), recently performed a similar procedure, the first such surgery in Malaysia and Southeast Asia. The USM team can therefore be considered to be among the first few to have done this brain surgery and achieved successful patient outcomes.
9.The Factors Associated with Outcomes in Surgically Managed Ruptured Cerebral Aneurysm
Lai Chuang CHEE ; Johari Adnan SIREGAR ; Abdul Rahman Izani Ghani ; Zamzuri IDRIS ; Noor Azman A Rahman @Mohd
Malaysian Journal of Medical Sciences 2018;25(1):32-41
Background: Ruptured cerebral aneurysm is a life-threatening condition that requires urgent medical attention. In Malaysia, a prospective study by the Umum Sarawak Hospital, Neurosurgical Center, in the year 2000–2002 revealed an average of two cases of intracranial aneurysms per month with an operative mortality of 20% and management mortality of 25%. Failure to diagnose, delay in admission to a neurosurgical centre, and lack of facilities could have led to the poor surgical outcome in these patients. The purpose of this study is to identify the factors that significantly predict the outcome of patients undergoing a surgical clipping of ruptured aneurysm in the local population. Material and Method: A single center retrospective study with a review of medical records was performed involving 105 patients, who were surgically treated for ruptured intracranial aneurysms in the Sultanah Aminah Hospital, in Johor Bahru, from July 2011 to January 2016. Information collected was the patient demographic data, Glasgow Coma Scale (GCS) prior to surgery, World Federation of Neurosurgical Societies Scale (WFNS), subarachnoid hemorrhage (SAH) grading system, and timing between SAH ictus and surgery. A good clinical grade was defined as WFNS grade I–III, whereas, WFNS grades IV and V were considered to be poor grades. The outcomes at discharge and six months post surgery were assessed using the modified Rankin’s Scale (mRS). The mRS scores of 0 to 2 were grouped into the “favourable” category and mRS scores of 3 to 6 were grouped into the “unfavourable” category. Only cases of proven ruptured aneurysmal SAH involving anterior circulation that underwent surgical clipping were included in the study. The data collected was analysed using the Statistical Package for Social Sciences (SPSS). Univariate and multivariate analyses were performed and a P-value of < 0.05 was considered to be statistically significant. Result: A total of 105 patients were included. The group was comprised of 42.9% male and 57.1% female patients. The mean GCS of the patients subjected to surgical clipping was 13, with the majority falling into the good clinical grade (78.1%). The mean timing of the surgery after SAH was 5.3 days and this was further categorised into early (day one to day three, 45.3%), intermediate (day four to day ten, 56.2%), and late (after day ten, 9.5%). The total favourable outcome achieved at discharge was 59.0% as compared to 41.0% of the unfavourable outcome, with an overall mortality rate of 10.5%. At the six-month post surgery review (n = 94), the patients with a favourable outcome constituted 71.3% as compared to 28.7% with an unfavourable outcome. The mortality, six months post surgery was 3.2%. On a univariate analysis of early surgical clipping, patients with a better GCS and good clinical grade had a significantly better outcome at discharge. Based on the univariate study, six months post surgery, the timing of the surgery and the clinical grade remained significant predictors of the outcome. On the basis of the multivariate analysis, male patients of younger age, with a good clinical grade, were associated with favourable outcomes, both at discharge and six months post surgery. Conclusion: In this study, we concluded that younger male patients with a good clinical grade were associated with a favourable outcome both at discharge and six months post surgery. We did not find the timing of the surgery, size of the aneurysm or duration of surgery to be associated with a patient’s surgical outcome. Increasing age was not associated with the surgical outcome in a longer term of patient’s follow up.
10.The Effects of 4-Hydroxybenzoic Acid Identified from Bamboo (Dendrocalamus asper) Shoots on Kv1.4 Channel
Jingli ZHANG ; Fatin H. MOHAMAD ; Jia Hui WONG ; Habsah MOHAMAD ; Abdul Hadi ISMAIL ; Abdul Aziz Mohamed Yusoff ; Hasnah OSMAN ; Kok Tong WONG ; Zamzuri IDRIS ; Jafri Malin ABDULLAH
Malaysian Journal of Medical Sciences 2018;25(1):101-113
Background: Bamboo shoot has been used as a treatment for epilepsy in traditional Chinese medicine for generations to treat neuronal disorders such as convulsive, dizziness and headaches. 4-hydroxybenzoic acid (4-hba) is a non-flavonoid phenol found abundantly in Dendrocalamus asper shoots (bamboo), fruits (strawberries and apples) and flowers. Kv1.4 is a rapidly inactivating Shaker-related member of the voltage-gated potassium channels with two inactivation mechanisms; the fast N-type and slow C-type. It plays vital roles in repolarisation, hyperpolarisation and signaling the restoration of resting membrane potential through the regulation of the movement of K+ across the cellular membrane. Methods: Chemical compounds from Dendrocalamus asper bamboo shoots were purified and identified as major palmitic acids mixed with other minor fatty acids, palmitic acid, 4-hydroxybenzaldehyde, lauric acid, 4-hydroxybenzoic acid and cholest-4-ene-3-one. The response of synthetic 4-hydroxybenzoic acid was tested on Kv1.4 potassium channel which was injected into viable oocytes that was extracted from Xenopus laevis. The current were detected by the two-microelectrode voltage clamp, holding potential starting from −80 mV with 20 mV stepup until +80 mV. Readings of treatments with 0.1% DMSO, 4-hba concentrations and K channel blockers were taken at +60 mV. The ratio of tail/peak amplitude is the index of the activity of the Kv1.4 channels with n ≥ 6 (number of oocytes tested). The decreases of the ratios of five different concentrations (1 μM, 10 μM, 100 μM, 1 mM and 2.5 mM) were compared with 0.1% DMSO as the control. Results: All concentration showed statistically significant results with P < 0.05 except for 100 μM. The normalised current of the 4-hba concentrations were compared with potassium channel blockers (TEA and 4-AP) and all groups showed statistically significant results. This study also showed that time taken for each concentration to affect Kv1.4 does not play any significant roles. Conclusion: 4-hydroxybenzoic acid was found to be able to enhance the inactivation of Kv1.4 by lowering the membrane potential so that the abnormal neuronal firing can be inhibited. With IC50 slightly higher than 10 μM, increasing concentrations (100 μM, 1 mM and 2.5 mM) had shown to exhibit toxicity effects. The best concentration from this study is 10 μM with Hill slope of 0.1799.


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