Indian Journal of Clinical Biochemistry

, Volume 19, Issue 1, pp 88–92 | Cite as

Determination of immunoreactivity ofPlasmodium falciparum antigens, serum dilutions and biomaterials

  • M. M. Mya
  • R. K. Saxena
  • A. Roy
  • D. N. Rao


Immunoreactivity properties of serum dilutions andPlasmodium falciparum malaria antigens were measured and compared by ELISA technique using different ELISA plates to evaluate the role of antigens and serum dilutions for optimum binding. Also effort has been made to see the effect of reaction surface and material i.e. ELISA plates for binding capacity. Serological properties were estimated by ELISA methods for detection of malaria and determination of immunological characteristics. Three Pf antigens (PfAg) i.e. ring infected erythrocyte surface antigen: AR-1 (RESA), histidine-rich protein 2 antigen (HRP-2) and glycophospholipid antigen (grown and developed Pf antigen from PSJ-M strain): GPL1 have been used for serological testing of human blood samples by Enzyme Link Immunosorbant Assay (ELISA). 1∶100, 1∶1000 and 1∶10000 dilutions of Pf positive and negative serum (50 samples in each group) and 1∶1000 dilution of Pf antigens were used to measure immunoreactive properties by ELISA method. Result of PfAg-serum immunoreactivity study showed that GPL1 has the highest degree of immuno binding reactivity compared to other Pf antigens. HRP-2 and RESA antigens showed no significant difference to each other. Study also found that Costar and Fastec ELISA plates have a better Ag−Ab binding capability compared to immulon and Falcon plates at all dilutions of serum. Serum dilution of 1∶100 showed best binding and reactivity with Pf antigens followed by 1∶1000 and 1∶10000 showed lowest reactivity.

Key words

Malaria Serum dilutions GPL1 HRP-2 AR-1 antigens ELISA plates 


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Copyright information

© Association of Clinical Biochemists of India 2004

Authors and Affiliations

  1. 1.Centre for Biomedical EngineeringIndian Institute of TechnologyNew Delhi
  2. 2.Malaria Research CentreAll India Institute of Medical SciencesNew Delhi
  3. 3.Department of BiochemistryAll India Institute of Medical SciencesNew Delhi

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