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Journal : Medical Laboratory Technology Journal

Differential Leukocyte Count Responses Post Injection of Duffy-binding-like Domain-2β of PfEMP1 Recombinant Protein in Wistar Rat Zahniar, Zahniar; Sulistyaningsih, Erma; Rachmania, Sheilla; Dewi, Rosita; Kusuma, Irawan Fajar
Medical Laboratory Technology Journal Vol. 11 No. 1 (2025): June
Publisher : Poltekkes Kemenkes Banjarmasin Jurusan Analis Kesehatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31964/mltj.v11i1.628

Abstract

Malaria due to Plasmodium falciparum causes a high mortality rate, and vaccination is a valuable approach to control it. One malaria vaccine candidate is Plasmodium falciparum erythrocyte membrane protein-1 (PfEMP1), specifically Duffy binding-like 2β (DBL2β) domain (DBL2β-PfEMP1), which has a vital role in severe malaria pathogenesis. The DBL2β-PfEMP1 recombinant protein is immunogenic. This study aimed to investigate the immune response of DBL2β-PfEMP1 protein by analyzing the differential leukocyte count. Twenty-three rats were randomly divided into control and five treatment groups. Rats were injected on days 0, 21, and 42 with a physiological solution of 0.9% NaCl, adjuvant, DBL2β-PfEMP1 protein, and each mixture of DBL2β-PfEMP1 protein with doses of 150, 300, and 450 µg/200gBW and adjuvant. Blood was collected on day 56 and prepared for differential leukocyte count examination with a visual microscopic examination by two expert observers. The results showed that DBL2β-PfEMP1 recombinant protein and adjuvant increased the eosinophils and neutrophils but decreased monocytes and lymphocytes and did not affect the basophils. Statistical analysis showed significant differences between groups for eosinophils (between control and DBL groups; Adj and DBL groups; DBL and other groups except DBL150+adj) and monocytes (between control and all doşe groups with adjuvant; DBL and all doşe groups with aduvant), but not for basophils, neutrophils, and lymphocytes. In conclusion, the serial injection of DBL2β-PfEMP1 recombinant protein showed different responses in each leukocyte cell type. Further analysis by time-series differential leukocyte count examination will be essential to determine the responses of each type of leukocyte to support the research on malaria vaccine development.
Co-Authors Adi Darma Effendi Afrina, Cut Agus R Rahman Agustina, Ani Aini, Nada Qurrota Ajeng Margareta Sari Al Munawir Alif Mardijana Amilin Amilin Angga Mardro Raharjo, Angga Mardro Ansari, Rahman Apriani, Susi Aprilia, Annisa Nadya Aprilya Pratiwi, Nadilla Awani Irewati Azham Purwandhono Aziz, Ayu Munawaroh Bintang, Muhammad Farrel Ravidinata Masoga Bi’izzyk, Avie Baldana Cholis Abrori, Cholis Chrisnaji Banindra Yudha Cicih Komariah CPF. Luhulima Damayanti Suhita Dessy Agustina Sari Dewantoro, Dicky Dewi Riniarti Dhiah Anis Salsabila Dina Helianti Dini Agustina Dita Diana Parti Dodo Zaenal Abidin Effiyaldi Eko Subastian Elly Nurus Sakinah, Elly Nurus Erfan Efendi Erma Sulistyaningsih Fitriana, Ani Qotuz Zuhro’ Gianevan, Nicholas Jirezra Gilang Vigorous Akbar Eka Candy Hafidin, Muhammad Ananda Faris Hakiim, Azafilmi Hasyim Asy’ari Hayati Nufus Herdhata Agusta Herniyanti Indriana Kartini Irawan Fajar Kusuma Irawan, Riyant Julius Kalangi Kamila, Vina Zahrotun Khoirul Fahri Arrijal Laily Rahmawati liza Marlia Luthfiyyah, Nur Atikah M. Ali Shodikin Mahriani Mahriani Maria Ulfa Maulana, Aditha Satria Moch. Agus Krisno Budianto Muhammad Noor Kholid Muhammad Zidan Muhtar Ady Kusuma Munawaroh, Ayu Nadaa Avria Hanum Nindya Shinta Rumastika Nurhaliza, Salsabilla Pelita Sari Pralampita, Pulong Wijang Prasetya, Eky Pribadi , Muhammad Iqbal Putut Pamilih Widagdo, Putut Pamilih Rahami, Nahla Ahmad Rahma, Nafisah Hani Asyifah Rena Normasari Rini Riyanti Roat Yeti Mustafida Rosita Sopwi Nur Lailly Sanda, Fara Fasah Sandy Nur Ikfal Raharjo Sa’diyah, Nindya Audatus septa surya wahyudi, septa surya Setyadi, Hario Jati Shabrina Shahifa Audy Rahima Sheila Rachmania Sheilla Rachmania, Sheilla Sillehu, Sahrir Siti Zaenab Solihin Sidik Sudradjat Sudradjat Sulistyaningsih , Erma Sumadi Susantin Fajariyah Teuku Salfiyadi Tri Nuke Pudjiastuti Widyatmoko, Bondan WINARTI WINARTI Winarti Winarti Yan Sukmawan, Yan Yuli Hermansyah Yuli Hermansyah, Yuli Yunita Armiyanti Zahniar, Zahniar