1.Analytical and diagnostic performance of an automated anti-CCPassay
PAVAI Sthaneshwar ; SARGUNAN Sokkalingam ; AMIR Azlan Zain ; CHOW Sook-Khuan
The Malaysian Journal of Pathology 2011;33(2):101-106
Aim: Autoantibodies against cyclic citrullinated peptide (anti-CCP) are considered to be a sensitive
and specifi c marker for rheumatoid arthritis (RA). This study evaluated the diagnostic and analytical
performances of the automated anti-CCP assay. Materials and Method: Sera from 80 patients with
established RA, 65 from other rheumatic diseases (non-RA) and 55 from healthy controls were
studied using second generation anti-CCP. Rheumatoid factor (RF) was also assayed in each sample,
and the results were compared to the anti-CCP fi ndings. Serum pools were used to determine the
precision and linearity. Results: At a cut-off of 7.4 U/ml for anti-CCP, the sensitivity and specifi city
for RA were 65% and 98% respectively. RF had a sensitivity of 58% and a lower specifi city of
93 % than anti-CCP. Conclusion: The high specifi city of the assay suggests that anti-CCP
is useful in the diagnosis of rheumatoid arthritis and in our cohort of study population
anti-CCP exhibits a better diagnostic value than RF. A considerable proportion (28%) of
RF-negative RA patients were anti-CCP positive. Based on analytical performance of the
assay, we conclude that full automation and high throughput features of AxSYM makes it
an ideal platform for routine testing of anti-CCP.
2.Development of marked striatal hand with antiparkinsonian medication withdrawal during traditional (Ayurvedic) medicine treatment for Parkinson’s disease
Shen-Yang Lim ; Khean Jin Goh ; Amir Azlan Zain ; Norlisah Ramli ; Yeun-Mun Choo ; Guan Huat Tan
Neurology Asia 2010;15(3):275-277
Ayurveda is a traditional medical system used widely in India and increasingly worldwide. Here,
we report on a patient with Parkinson’s disease (PD) who developed marked striatal hand with
antiparkinsonian medication withdrawal during Ayurvedic medicine treatment for her PD. Although a
direct role for the Ayurvedic medicines in inducing the hand deformity cannot be excluded, we propose
that severe dopaminergic defi ciency (due to prolonged withdrawal of antiparkinsonian medications in
the context of long-standing PD) was probably the main culprit in our patient.