1.Role of cytokines in the assessment of clinical outcome and neuroimaging findings in patients with tuberculous meningitis
Mei-Ling Sharon Tai ; Hong-Yien Tan ; Yean-Kong Yong ; Esaki M. Shankar ; Shanthi Viswanathan ; Hazman Mohd Nor ; Kartini Rahmat ; Jun-Fai Yap ; Boon-Seng Ng ; Chong Tin Tan
Neurology Asia 2017;22(3):209-220
Background: Tuberculous meningitis is a life-threatening manifestation resulting from infection
by Mycobacterium tuberculosis, especially in the developing countries. The molecular aspects of
pathogenesis of tuberculous meningitis remain poorly understood. We evaluated the correlation of
cerebrospinal fluid (CSF) and serum cytokine levels with the clinical outcome of 15 HIV-negative
patients with tuberculous meningitis. We also assessed the association of CSF and serum cytokines
with neuroimaging of brain findings in the patients. Methods: The prospective longitudinal study was
conducted at the University Malaya Medical Centre between 2012 and 2014. Neuroimaging of the
brain was performed and the findings of leptomeningeal enhancement, hydrocephalus, tuberculoma,
infarcts and vasculopathy were recorded. The CSF and serum specimens were analyzed for IL-1ß,
IL-8, IL-10, IL-18, IP-10, IFN-γ, MCP-1, TGF-ß, VEGF, TNF- α, IL-18BPa and MMP-9. The clinical
outcome was graded at 3 months based on Modified Rankin scale (mRS). Results: On admission and
at one month of anti-tuberculosis treatment, the CSF levels of IL-8, IL-1β, IP-10, IFN-γ and VEGF
were elevated in all of the patients. Serum IP-10, MCP-1, IL-1β and IL-8 levels were increased on
admission and at one month of anti-tuberculosis treatment. There were statistically significant differences
between good and poor outcome (mRS at 3 months) for CSF IFN-γ (p=0.033), CSF IL-10 (p=0.033)
and serum VEGF (p=0.033) at one month of treatment. None of the patients showed any association
between CSF and serum cytokines on admission and at one month of anti-tuberculosis treatment with
neuro-radiological findings.
Conclusion: The CSF cytokine levels were not related to TBM disease severity on admission, and
changes on MRI/CT scans. CSF levels of IFN-γ and IL-10 at one month of anti-tuberculosis treatment
were associated with clinical outcome at 3 months. CSF cytokine levels on admission were not
associated with the clinical outcome.
Tuberculosis, Meningeal
2.Neuroimaging findings are sensitive and specific in diagnosis of tuberculous meningitis
Mei-Ling Sharon Tai ; Hazman Mohd Nor ; Kartini Rahmat ; Shanthi Viswanathan ; Khairul Azmi Abdul Kadir ; Norlisah Ramli ; Fatimah Kamila Abu Bakar ; Norzaini Rose Mohd Zain ; Suhailah Abdullah ; Jun Fai Yap ; Ahmed Shaheed ; Boon Seng Ng ; Mohd Hanip Rafia ; Chong Tin Tan
Neurology Asia 2017;22(1):15-23
Objective: The primary objective of this study was to describe the neuroimaging changes of tuberculous
meningitis (TBM), and to determine the role of neuroimaging in the diagnosis of TBM. Methods:
Between January 2009 and July 2015, we prospectively recruited TBM patients in two hospitals in
Malaysia. Neuroimaging was performed and findings were recorded. The control consists of other types
of meningo-encephalitis seen over the same period. Results: Fifty four TBM patients were recruited.
Leptomeningeal enhancement was seen in 39 (72.2%) patients, commonly at prepontine cistern and
interpeduncular fossa. Hydrocephalus was observed in 38 (70.4%) patients, 25 (46.3%) patients had
moderate and severe hydrocephalus. Thirty four patients (63.0%) had cerebral infarction. Tuberculoma
were seen in 29 (53.7%) patients; 27 (50.0%) patients had classical tuberculoma, 2 (3.7%) patients
had “other” type of tuberculoma, 18 (33.3%) patients had ≥5 tuberculoma, and 11 (20.4%) patients
had < 5 tuberculoma. Fifteen (37.2%) patients had vasculitis, 6 (11.1%) patients had vasospasm. Close
to nine tenth (88.9%) of the patients had ≥1 classical neuroimaging features, 77.8% had ≥ 2 classical
imaging features of TBM (basal enhancement, hydrocephalus, basal ganglia / thalamic infarct, classical
tuberculoma, and vasculitis/vasospasm). Only 4% with other types of meningitis/encephalitis had ≥1
feature, and 1% had two or more classical TBM neuroimaging features. The sensitivity of the imaging
features of the imaging features for diagnosis of TBM was 88.9% and the specificity was 95.6%.
Conclusion: The classic imaging features of basal enhancement, hydrocephalus, basal ganglia/thalamic
infarct, classic tuberculoma, and vasculitis are sensitive and specific to diagnosis of TBM.
Tuberculosis, Meningeal
3.Complementary and alternative medicine for migraine and tension-type headache among the Malaysians
Mei-Ling Sharon TAI ; Jun Fai YAP ; Han Lim CHIN ; Chong Tin TAN ; Cheng Beh GOH
Neurology Asia 2020;25(2):153-163
Background: The literature on complementary and alternative (CAM) therapies in South East Asia
is limited. The objective of the study was to evaluate the frequencies of CAM therapies in the
Malaysian patients with migraine and tension-type headache (TTH). We also assessed the reasons for
CAM use. Methods: This was a cross-sectional study. The study was conducted in a tertiary hospital
in Malaysia. Consecutive patients presenting with migraine and TTH to the neurology clinic were
recruited. Demographic characteristics were documented. Data on CAM use, including frequency and
the reasons was collected. Results: Six hundred and eighty five patients (365 TTH and 320 migraine)
were recruited. They consisted of 305 (44.5%) Malay, 174 (25.4%) Chinese, 169 (24.7%) Indian
and 37 (5.4%) patients from other ethnic groups. A total of 478 (69.8%) patients, comprising 266
(55.6%) patients with TTH and 212 (44.4%) patients with migraine used CAM therapies. The most
commonly used CAM therapies were medicated oil (355 patients, 51.8%) and massage (246 patients,
35.9%). The most common reasons for CAM use were reduction of pain (47.7 %), stress reduction
(34.9%), and “cooling” effect (27.4%). Thirteen (4.1%) patients with migraine practiced reflexology,
whereas 5 (1.4%) patients with TTH practiced reflexology (p=0.032). Twenty three (7.2%) patients
with migraine took vitamin supplements compared to 13 (3.6%) patients with TTH (p=0.039). On
univariate analysis, CAM use was significantly associated with ethnic groups (p=0.014), gender
(p<0.0001), age (p=0.004), salary (p=0.014), educational level (p=0.003), and headache subtypes
(p= 0.067). On logistic regression, married women were more likely to use CAM (OR=1.864, 95%
CI 1.216-2.858, p=0.004).
Conclusion: A large number of Malaysian headache patients used CAM. The most common reasons
were reduction of pain, stress and “heatiness”. Medicated oil was most commonly used, followed by
massage. Married women were more likely to use CAM, and this was the only determinant in this study.
4.Predictors of functional outcome in patients with stroke thrombolysis in a tertiary hospital in Malaysia.
Mei-Ling Sharon TAI ; Khean Jin GOH ; Khairul Azmi Abdul KADIR ; Mohd Idzwan ZAKARIA ; Jun Fai YAP ; Kay Sin TAN
Singapore medical journal 2019;60(5):236-240
INTRODUCTION:
Intravenous (IV) thrombolysis with alteplase (rt-PA) is effective in ischaemic stroke. The primary objective was to evaluate predictors of functional outcome in acute ischaemic stroke (AIS) patients treated with IV rt-PA. The secondary objective was to assess the outcome with the modified Rankin scale (mRS). We also examined the predictive value of the Totaled Health Risks in Vascular Events (THRIVE) score.
METHODS:
AIS patients treated with IV rt-PA from February 2012 to August 2016 were recruited. Demographic data, National Institutes of Health Stroke Scale (NIHSS) scores, timing and neuroradiological findings were recorded. Patients received a dose of 0.9 mg/kg IV rt-PA within 4.5 hours of symptom onset. mRS score was evaluated at discharge and three months, and good and poor clinical outcomes were defined as scores of 0-2 and 3-6, respectively. Baseline THRIVE scores were assessed.
RESULTS:
36 patients received IV rt-PA. 20 (55.6%) patients had an mRS score of 0-2 at three months. Based on THRIVE score, 86.1% had a good or moderately good prognosis. On univariate analysis, poor outcome was associated with NIHSS score before rt-PA (p = 0.03), THRIVE score (p = 0.02), stroke subtype (p = 0.049) and diabetes mellitus (DM; p = 0.06). Multiple logistic regression showed that outcome was significantly associated with NIHSS score before rt-PA (p = 0.032) and DM (p = 0.010).
CONCLUSION
Our newly developed Malaysian IV rt-PA service is safe, with similar outcomes to the published literature. Functional outcome after thrombolysis was associated with baseline NIHSS score and DM.