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.Prevalence of Shunt Dependency and Clinical Outcome in Patients with Massive Intraventricular Haemorrhage Treated with Endoscopic Washout and External Ventricular Drainage
Zamzuri Idris ; Jafri Malin Abdullah
Malaysian Journal of Medical Sciences 2017;24(1):40-46
Background: Intraventricular haemorrhage (IVH) causes blockage of ventricular
conduits leading to hydrocephalus, increased intracranial pressure (ICP), and a reduced
level of consciousness. The current standard management of IVH is insertion of an external
ventricular drainage (EVD) catheter. However, this procedure addresses only the problems of
acute hydrocephalus and raised ICP. Endoscopic washout allows for a more complete removal
of the intraventricular clot. This study compared these two types of treatment in terms of shunt
dependency and relevant clinical outcomes.
Methods: Patients who were 10–80 years old and presented with a Graeb score of more
than six were randomised into endoscopic washout and EVD treatment groups. A CT brain was
repeated on each patient within 24 hours after surgery, and if a patient’s Graeb score was still
more than six, a repeat endoscopic washout was performed to clear the remaining clots. All
patients were monitored for shunt dependency at two weeks and three months, and clinical
outcomes were measured at six months after the procedure.
Results: A total of 39 patients were recruited; 19 patients were randomised into the
endoscopic washout group, and 20 were randomised into the EVD group. However, three patients
in the endoscopic group refused that treatment and opted for EVD insertion. Patients treated with
endoscopic washout had significantly less drainage dependency at two weeks (P < 0.005) and at
three months (P < 0.004) as compared to patients in the external ventricular drainage group.
The reduction in Graeb scores was also significantly greater in the endoscopic washout group
(P < 0.001). However, the functional outcome at six months measured via a modified Rankin scale
score was no different in the two groups of patients. The difference in the functional outcome of
the patients was mainly dependent on the initial pathology, with those presenting with a thalamic
bleed with IVH showing a poor functional outcome. This parameter was also influenced by the
Glasgow Coma Scale (GCS) score on admission, with those patients with a score of 12 or less
having a poor functional outcome (MRS 5–6) at three and six months after the surgery.
Conclusions: The use of neuroendoscopy in patients with a massive IVH significantly
reduced drainage dependency. However, it did not alter the final functional outcome.
3.We Must Invest in Applied Knowledge of Computational Neurosciences and Neuroinformatics as an Important Future in Malaysia: The Malaysian Brain Mapping Project
Putra Sumari ; Zamzuri Idris ; Jafri Malin Abdullah
Malaysian Journal of Medical Sciences 2017;24(1):1-9
The Academy of Sciences Malaysia and the Malaysian Industry-Government group for High Technology has been working hard to project the future of big data and neurotechnology usage up to the year 2050. On the 19 September 2016, the International Brain Initiative was announced by US Under Secretary of State Thomas Shannon at a meeting that accompanied the United Nations’ General Assembly in New York City. This initiative was seen as an important effort but deemed costly for developing countries. At a concurrent meeting hosted by the US National Science Foundation at Rockefeller University, numerous countries discussed this massive project, which would require genuine collaboration between investigators in the realms of neuroethics. Malaysia’s readiness to embark on using big data in the field of brain, mind and neurosciences is to prepare for the 4th Industrial Revolution which is an important investment for the country’s future. The development of new strategies has also been encouraged by the involvement of the Society of Brain Mapping and Therapeutics, USA and the International Neuroinformatics Coordinating Facility.
4.The Effect of 4-hydroxybenzaldehyde on the γ-aminobutyric Acid Type A Receptor
Amelia Jane Lloyd ; Abdul Aziz Mohamed Yusoff ; Zamzuri Idris ; Jafri Malin Abdullah
Malaysian Journal of Medical Sciences 2017;24(2):94-99
in the mammalian cortex and hippocampus. It is expressed heterologously in the
Xenopus laevis oocyte as a α1β2γ2S/L subtype for application as an in vitro model for the screening
of compounds that modulate receptor activities. In fact, 4-hydroxybenzaldehyde (4-HB) has
been identified as one of the major components in Dendrocalamus asper bamboo shoots in our
previous study, and the current study showed that at 101.7 μM, 4-HB significantly reduced the
GABA-induced chloride current of GABAA receptors expressed on Xenopus oocytes, indicating a
possible GABAergic antagonistic effect at high concentrations.
5.Inflammatory Biomarkers and Their Value in Predicting Survival and Outcome among Patients with Spontaneous Intracerebral Haemorrhage
Senthil Kumar Rajapathy ; Zamzuri Idris ; Regunath Kandasamy ; Albert Wong Sii Hieng ; Jafri Malin Abdullah
Malaysian Journal of Medical Sciences 2017;24(3):51-65
Background: Spontaneous intracerebral haemorrhage (SICH) has emerged as one of
the most devastating forms of stroke in recent decades. This disease is noted to carry a 30-day
mortality rate of approximately 45%. An increasing number of studies have implicated a complex
immune-mediated and inflammation-mediated cascade of responses in the pathophysiology
of SICH and the resultant neurologic outcome. Several clinical studies have demonstrated an
association between inflammatory markers and outcome in patients with SICH. However, the
exact relationship between serum biomarkers and functional outcomes amongst survivors has not
been clearly elucidated. This study aimed to evaluate the changes in peripheral leukocyte count
(WBC count) and C-reactive protein (CRP) levels in patients with SICH and to correlate these
findings with survival and functional outcome.
Methodology: A prospective, descriptive and correlational study was conducted at
Sarawak General Hospital (SGH) over the span of two years (April 2013–April 2015). Patients
aged between 30 years and 75 years with supratentorial intracerebral bleed secondary to
uncontrolled hypertension were recruited in this study. Data pertaining to the demography,
clinical and radiological parameters, peripheral WBC count and CRP levels were obtained.
Mortality and functional outcomes were determined at 6 months post ictus. Patients were
recruited following the fulfilment of exclusion and inclusion criteria, and all obtained data were
analysed with the Statistical Package for Social Sciences (SPSS) for Windows version 21.0.
Results: A total of 60 patients with a mean age of 56 years were recruited in this study.
We found that approximately 16 patients were less than or equal to 50 years old (26.7%) and that
44 patients belonged to the older age group of above 50 years (73.3%). The Glasgow Coma Scale
(GCS) score on admission ranged from 9 to 14/15 with a median value of 11/15. The mean clot
volume was 20.1 cm3. The GCS score on admission and clot volume were significantly associated
with the Glasgow Outcome Scale (GOS) at 6 months and overall survival (P < 0.05). The elevated
WBC count and CRP level on admission and at 72 hours post admission were significantly
associated with GOS at 6 months and overall survival (P < 0.05). Thus, the GCS score, clot volume,
WBC count and CRP levels on admission and at 72 hours post admission can be used to predict
functional outcome at 6 months and overall survival in patients with SICH.
Conclusion: We could conclude via this study that for patients with SICH, the main
determinants or predictors of functional outcome at 6 months and overall survival were noted to be the GCS score on admission, clot size, WBC count and CRP levels on admission and at 72 hours
post admission.
6.Magnetoencephalography Phantom Comparison and Validation: Hospital Universiti Sains Malaysia (HUSM) Requisite
Hazim Omar ; Alwani Liyana Ahmad ; Noburo Hayashi ; Zamzuri Idris ; Jafri Malin Abdullah
Malaysian Journal of Medical Sciences 2015;22(Special Issue):19-27
Background: Magnetoencephalography (MEG) has been extensively used to measure small-scale neuronal brain activity. Although it is widely acknowledged as a sensitive tool for deciphering brain activity and source localisation, the accuracy of the MEG system must be critically evaluated. Typically, on-site calibration with the provided phantom (Local phantom) is used. However, this method is still questionable due to the uncertainty that may originate from the phantom itself. Ideally, the validation of MEG data measurements would require cross-site comparability.
Method: A simple method of phantom testing was used twice in addition to a measurement taken with a calibrated reference phantom (RefPhantom) obtained from Elekta Oy of Helsinki, Finland. The comparisons of two main aspects were made in terms of the dipole moment (Qpp) and the difference in the dipole distance from the origin (d) after the tests of statistically equal means and variance were confirmed.
Result: The result of Qpp measurements for the LocalPhantom and RefPhantom were 978 (SD24) nAm and 988 (SD32) nAm, respectively, and were still optimally within the accepted range of 900 to 1100 nAm. Moreover, the shifted d results for the LocalPhantom and RefPhantom were 1.84 mm (SD 0.53) and 2.14 mm (SD 0.78), respectively, and these values were below the maximum acceptance range of within 5.0 mm of the nominal dipole location.
Conclusion: The local phantom seems to outperform the reference phantom as indicated by the small standard error of the former (SE 0.094) compared with the latter (SE 0.138). The result indicated that HUSM MEG system was in excellent working condition in terms of the dipole magnitude and localisation measurements as these values passed the acceptance limits criteria of the phantom test.
7.A rare case of paediatric pontine Glioblastoma presenting as a cerebellopontine angle otogenic abscess
Kantha Rasalingam ; Jafri Malin Abdullah ; Zamzuri Idris ; Hillol Kanti Pal ; Nasser Wahab ; Effat Omar ; Salma@Win Mar
Malaysian Journal of Medical Sciences 2008;15(1):44-48
We describe rare case of a 9-year old boy who presented with a two- week history of right ear discharge and mild fever. Contrast enhanced CT scan of the brain
showed a lesion in the right cerebellopontine angle with mild enhancement mimicking early abscess formation. Involvement of the mastoid air cells pointing
towards a radiological diagnosis of mastoiditis reinforced the diagnosis of an abscess. A magnetic resonance imaging (MRI) was planned for the patient but his
conscious level deteriorated and patient slipped into coma warranting immediate surgical intervention. Intraoperatively, about 90% of the tumour was removed
and the appearance of the tumour resembled that of an acoustic schwannoma but histopathology confirmed the diagnosis of a glioblastoma multiforme (GBM). MRI
done post operatively showed lesion in the pons confirming the diagnosis of an exophytic pontine glioblastoma multiforme.
8.Functional outcome at 6 months in surgical treatment of spontaneous supratentorial intracerebral haemorrhage
Abdul Rahman Izaini Ghani ; John Tharakan Kalappurakkal John ; Zamzuri Idris ; Mazira Mohamad Ghazali ; Nur-Leem Murshid ; Kamarul Imran Musa
Malaysian Journal of Medical Sciences 2008;15(4):48-55
A prospective cohort study was done to evaluate the role of surgery in patients with spontaneous supratentorial intracerebral haemorrhage (SICH) and to identify
predictors of outcome including the use of invasive regional cortical cerebral blood flow (rCoBF) and microdialysis. Surgery consisted of craniotomy or decompressive craniectomy. The ventriculostomy for intracranial pressure (ICP) monitoring and
drainage and regional cortical cerebral blood flow (rCoBF) and microdialysis were performed in all subjects. Pre and post operative information on subjects were
collected. The study end points was functional outcome at 6 months based on a dichotomised Glasgow Outcome Scale (GOS).The selected clinical, radiological,
biochemical and treatment factors that may influence the functional outcome were analysed for their significance. A total of 36 patients were recruited with 27(75%)
patients had Glasgow Coma Score (GCS) between 5 to 8 on admission and 9(25%) were admitted with GCS of 9. At 6 months, 86 % had a poor or unfavourable
outcome (GOS I-III) and 14% had good or favourable outcome (GOS IV-V). The mortality rate at 6 months was 55%. Univariate analysis for the functional outcome
identified 2 significant variables, the midline shift (p=0.013) and mean lactate:pyruvate ratio (p=0.038). Multivariate analysis identified midline shift as
the single significant independent predictor of functional outcome (p=0.013).Despite aggressive regional cortical cerebral blood flow (rCoBF) and microdialysis study
for detection of early ischemia, surgical treatment for spontaneous intracerebral haemorrhage only benefited a small number of patients in terms of favourable
outcome (14%) and in the majority of patients (86%), the outcome was unfavourable. Patients with midline shift > 5mm has almost 21 times higher chances
(adj) OR 20.8 of being associated with poor outcome (GOS I-III).
9.Deep Brain Stimulation (DBS) for Movement Disorders: An Experience in Hospital Universiti Sains Malaysia (HUSM) Involving 12 Patients
Lim Liang Hooi ; Diana Noma Fitzrol ; Senthil Kumar Rajapathy ; Tan Yew Chin ; Sanihah Abdul Halim ; Regunath Kandasamy ; BadrisyahIdris ; Abdul Rahman Izaini Ghani ; Zamzuri Idris ; John Tharakan
Malaysian Journal of Medical Sciences 2017;24(2):87-93
Deep brain stimulation (DBS) was first introduced in 1987 to the developed world. As a
developing country Malaysia begun its movement disorder program by doing ablation therapy
using the Radionics system. Hospital Universiti Sains Malaysia a rural based teaching hospital had
to take into consideration both health economics and outcomes in the area that it was providing
neurosurgical care for when it initiated its Deep Brain Stimulation program. Most of the patients
were from the low to medium social economic groups and could not afford payment for a DBS
implant. We concentrated our DBS services to Parkinson's disease, Tourette's Syndrome and
dystonia patients who had exhausted medical therapy. The case series of these patients and their
follow-up are presented in this brief communication.
10.Awake Craniotomy: A Case Series of Anaesthetic Management using a Combination of Scalp Block, Dexmedetomidine and Remifentanil in Hospital Universiti Sains Malaysia
W Mohd Nazaruddin W Hassan ; Mohd Fahmi Lukman ; Laila Abd Mukmin ; Zamzuri Idris ; Abdul Rahman Izaini Ghani ; Rhendra Hardy Mohamad Zaini
The Medical Journal of Malaysia 2013;68(1):64-66
Awake craniotomy is a brain surgery in patients who are
kept awake when it is indicated for certain intracranial
pathologies. The anaesthetic management strategy is very
important to achieve the goals of the surgery. We describe a series of our first four cases performed under a combination of scalp block and conscious sedation. Scalp block was performed using a mixture of ropivacaine 0.75% and adrenaline 5 μg/ ml administered to the nerves that
innervate the scalp. Conscious sedation was achieved with
a combination of two recently available drugs in our country, dexmedetomidine (selective α 2-agonist) and remifentanil (ultra-short acting opioid). Remifentanil was delivered in a target controlled infusion (TCI) mode.