ArticleMalaria journal2020
Plasmodium falciparum histidine-rich protein 2 diversity in Ghana.
Article in Malaria journal, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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16 citing papers in PubMed, 50 citations in OpenAlex.
- Spatial and genetic dynamics of Plasmodium falciparum histidine-rich protein2 in sub-Saharan Africa.PloS one · 2026Article
- First report of pfhrp2 and pfhrp3 gene deletions compromising HRP2-based malaria rapid diagnostic tests in Malawi.Infectious diseases of poverty · 2025Article
- Analysis of pfhrp2 and pfhrp3 gene deletions, and the structure and variability of PfHRP2 and PfHRP3 proteins: implications for the performance of malaria rapid diagnostic tests in Cubal, Angola.Malaria journal · 2025Article
- Contrasting sequence polymorphism and structural basis patterns ofJournal of biosciences · 2025Article
- Performance of ParaHIT® HRP2-Based Rapid Diagnostic Test and Proportions of Plasmodium falciparum Histidine-Rich Protein 2/3 Gene Deletions in Togo.The American journal of tropical medicine and hygiene · 2024Article
- Novel Plasmodium falciparum histidine-rich protein 2/3 repeat type in Ethiopian malaria infection: does this affect performance of HRP2-based malaria RDT?Malaria journal · 2024Article
- Evaluating Malaria Rapid Diagnostic Tests and Microscopy for Detecting Plasmodium Infection and Status of Plasmodium falciparum Histidine-Rich Protein 2/3 Gene Deletions in Southeastern Nigeria.The American journal of tropical medicine and hygiene · 2024Article
- Assessing the histidine-rich protein 2/3 gene deletion in Plasmodium falciparum isolates from Burkina Faso.Malaria journal · 2023Article
- Malaria Diagnosis Using Paper-Based Immunoassay for Clinical Blood Sampling and Analysis by a Miniature Mass Spectrometer.Analytical chemistry · 2022Article
- Deletion patterns, genetic variability and protein structure of pfhrp2 and pfhrp3: implications for malaria rapid diagnostic test in Amhara region, Ethiopia.Malaria journal · 2022Article
- Genetic Sequence Variation in theGenes · 2022Article
- [Ocular changes as a diagnostic tool for malaria].Die Ophthalmologie · 2022Article
- Genetic deletions and high diversity ofFrontiers in epidemiology · 2022Article
- Purification of native histidine-rich protein 2 (nHRP2) from Plasmodium falciparum culture supernatant, infected RBCs, and parasite lysate.Malaria journal · 2021Article
- Genetic variation of Plasmodium falciparum histidine-rich protein 2 and 3 in Assosa zone, Ethiopia: its impact on the performance of malaria rapid diagnostic tests.Malaria journal · 2021Article
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13 authors at 3 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundIn the absence of microscopy, Plasmodium falciparum histidine-rich proteins 2 (PfHRP2)-based rapid diagnostic tests (RDTs) are recommended for the diagnosis of falciparum malaria, particularly in endemic regions. However, genetic variability of the pfhrp2 gene threatens the usefulness of the test due to its impact on RDT sensitivity. This study aimed to investigate the diversity of pfhrp2 in malaria cases among children in Ghana.
methodsA cross-sectional study was conducted at the Adidome Government Hospital in the Volta Region of Ghana. A total of 50 children with mean age of 6.6 ± 3.5 years and diagnosed falciparum malaria were included. Blood samples were collected for complete blood count, malaria parasite identification and counting using auto analyzer and microscopy, respectively. DNA was isolated from blood-spotted Whatman filters, amplified and sequenced. Nucleotide sequences were translated in silico to corresponding amino acids and the deduced amino acids sequences were analyzed for diversity using Mega X.
resultsThe number of repeats and number of each repeat within PfHRP2 varied between isolates. Twelve rare PfHRP2 repeat types, two of which are previously unreported, were identified in this study. The HRP2 sequence obtained in this study shared high similarities with isolates from Kenya. Using Baker's regression model, Group B was the highest occurring type (58.0%). Screening of all sequences for epitopes recognized by PfHRP2-specific monoclonal antibodies (mAbs), the predominant motif was AHHAADAHH, which is recognized by the C1-13 mAbs.
conclusionThis study reports diversity of P. falciparum HRP2 in samples from Ghanaian children with symptomatic malaria. The findings of this study highlight the existence of extra amino acid repeat types which adds to the PfHRP2 antigenic variability.
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