Clinical and immunological markers of dengue progression in a study cohort from a hyperendemic area in Malaysia

Anusyah Rathakrishnan, Benjamin Klekamp, Seok Mui Wang, Thamil Vaani Komarasamy, Santha Kumari Natkunam, Jameela Sathar, Azliyati Azizan, Aurora Sanchez-Anguiano, Rishya Manikam, Shamala Devi Sekaran

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Background: With its elusive pathogenesis, dengue imposes serious healthcare, economic and social burden on endemic countries. This study describes the clinical and immunological parameters of a dengue cohort in a Malaysian city, the first according to the WHO 2009 dengue classification. Methodology and Findings: This longitudinal descriptive study was conducted in two Malaysian hospitals where patients aged 14 and above with clinical symptoms suggestive of dengue were recruited with informed consent. Among the 504 participants, 9.3% were classified as non-dengue, 12.7% without warning signs, 77.0% with warning signs and 1.0% with severe dengue based on clinical diagnosis. Of these, 37% were misdiagnosed as non-dengue, highlighting the importance of both clinical diagnosis and laboratory findings. Thrombocytopenia, prolonged clotting time, liver enzymes, ALT and AST served as good markers for dengue progression but could not distinguish between patients with and without warning signs. HLA-A*24 and -B*57 were positively associated with Chinese and Indians patients with warning signs, respectively, whereas A*03 may be protective in the Malays. HLA-A*33 was also positively associated in patients with warning signs when compared to those without. Dengue NS1, NS2A, NS4A and NS4B were found to be important T cell epitopes; however with no apparent difference between with and without warning signs patients. Distinction between the 2 groups of patients was also not observed in any of the cytokines analyzed; nevertheless, 12 were significantly differentially expressed at the different phases of illness. Conclusion: The new dengue classification system has allowed more specific detection of dengue patients, however, none of the clinical parameters allowed distinction of patients with and without warning signs. While the HLA-A*33 may be predictive marker for development of warning signs; larger studies will be needed to support this findings.

Original languageEnglish
Article numbere92021
JournalPLoS One
Volume9
Issue number3
DOIs
Publication statusPublished - Mar 19 2014
Externally publishedYes

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HLA-A Antigens
dengue
Dengue
Malaysia
cohort studies
Cohort Studies
Biomarkers
T-Lymphocyte Epitopes
Liver
Cytokines
Economics
Enzymes
Severe Dengue
Clinical Laboratory Techniques
descriptive studies
thrombocytopenia
Diagnostic Errors
Informed Consent
Thrombocytopenia
Longitudinal Studies

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Medicine(all)

Cite this

Rathakrishnan, A., Klekamp, B., Wang, S. M., Komarasamy, T. V., Natkunam, S. K., Sathar, J., ... Sekaran, S. D. (2014). Clinical and immunological markers of dengue progression in a study cohort from a hyperendemic area in Malaysia. PLoS One, 9(3), [e92021]. https://doi.org/10.1371/journal.pone.0092021

Clinical and immunological markers of dengue progression in a study cohort from a hyperendemic area in Malaysia. / Rathakrishnan, Anusyah; Klekamp, Benjamin; Wang, Seok Mui; Komarasamy, Thamil Vaani; Natkunam, Santha Kumari; Sathar, Jameela; Azizan, Azliyati; Sanchez-Anguiano, Aurora; Manikam, Rishya; Sekaran, Shamala Devi.

In: PLoS One, Vol. 9, No. 3, e92021, 19.03.2014.

Research output: Contribution to journalArticle

Rathakrishnan, A, Klekamp, B, Wang, SM, Komarasamy, TV, Natkunam, SK, Sathar, J, Azizan, A, Sanchez-Anguiano, A, Manikam, R & Sekaran, SD 2014, 'Clinical and immunological markers of dengue progression in a study cohort from a hyperendemic area in Malaysia', PLoS One, vol. 9, no. 3, e92021. https://doi.org/10.1371/journal.pone.0092021
Rathakrishnan A, Klekamp B, Wang SM, Komarasamy TV, Natkunam SK, Sathar J et al. Clinical and immunological markers of dengue progression in a study cohort from a hyperendemic area in Malaysia. PLoS One. 2014 Mar 19;9(3). e92021. https://doi.org/10.1371/journal.pone.0092021
Rathakrishnan, Anusyah ; Klekamp, Benjamin ; Wang, Seok Mui ; Komarasamy, Thamil Vaani ; Natkunam, Santha Kumari ; Sathar, Jameela ; Azizan, Azliyati ; Sanchez-Anguiano, Aurora ; Manikam, Rishya ; Sekaran, Shamala Devi. / Clinical and immunological markers of dengue progression in a study cohort from a hyperendemic area in Malaysia. In: PLoS One. 2014 ; Vol. 9, No. 3.
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