FEDIK ABDUL RANTAM
Departemen Mikrobiologi Veteriner, Fakultas Kedokteran Hewan, Universitas Airlangga

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Immunobioinformatics analysis and phylogenetic tree construction of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in Indonesia: spike glycoprotein gene Ansori, Arif Nur Muhammad; Kharisma, Viol Dhea; Antonius, Yulanda; Tacharina, Martia Rani; Rantam, Fedik Abdul
Jurnal Teknologi Laboratorium Vol 9 No 1 (2020): 2020 (1): Special Edition "COVID-19"
Publisher : POLTEKKES KEMENKES YOGYAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (986.383 KB) | DOI: 10.29238/teknolabjournal.v9i1.221

Abstract

The outbreak of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which causes coronavirus disease 2019 (COVID-19), has spread worldwide and as a result, the World Health Organization (WHO) declared it a pandemic. At present, there are no approved vaccines against SARS-CoV-2. Therefore, the aim of this study was to predict epitope-based vaccines using bioinformatics approaches and phylogenetic tree construction of SARS-CoV-2 against the backdrop of the COVID-19 pandemic. In this study, we employed 27 isolates of SARS-CoV-2 spike glycoprotein genes retrieved from GenBank® (National Center for Biotechnology Information, USA) and the GISAID EpiCoV™ Database (Germany). We analyzed the candidate epitopes using the Immune Epitope Database and Analysis Resource. Furthermore, we performed a protective antigen prediction with VaxiJen 2.0. Data for B-cell epitope prediction, protective antigen prediction, and the underlying phylogenetic tree of SARS-CoV-2 were obtained in this research. Therefore, these data could be used to design an epitope-based vaccine against SARS-CoV-2. However, the advanced study is recommended for confirmation (in vitro and in vivo).
DIFFERENCES OF BONE REGENERATION USING BOVINE HYDROXYAPATITE AND BOVINE HYDROXYAPATITE WITH FREEZE-DRIED PLATELET RICH PLASMA ALLOGRAFT IN BONE DEFECT OF FEMORAL WHITE RABBIT Edward, Mouli; Dominica, Henry; Mahyudin, Ferdiansyah; Rantam, Fedik Abdul
Journal Orthopaedi and Traumatology Surabaya Vol. 9 No. 2 (2020): October 2020
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/joints.v9i2.2020.34-54

Abstract

Background: Hydroxyapatite is a bone graft that has osteoconductive properties for bone defects treatment. Platelet-rich plasma (PRP) has a capability of providing many bioactive molecules in physiological proportions. Hydroxyapatite given freeze-dried PRP is expected to create a graft that can strengthen the matrix while promoting osteoinduction. This study compares the effects of regeneration on the bone between bovine hydroxyapatite (BHA) and bovine hydroxyapatite with freeze-dried platelet-rich plasma (FD-PRP) as a bone graft in bone defect of the femoral white rabbit.Methods: The 12 equal New Zealand white rabbits aged 6-9 months are divided into two groups. Bone defects were made in the lower femoral meta-diaphysis with a diameter of 2.5 mm. The defects were filled with BHA with FD-PRP allograft in the treatment group and BHA in the control group. Both groups will be sacrificed in the third and sixth weeks, then evaluated histologically for microvascular structure, osteoblasts, woven bone, type-I collagen, osteocalcin, alkaline phosphatase, and immunoglobulin G.Results: During the evaluation in week 3 and 6, microvascular structure, osteoblast, and type-I collagen decreased in both groups with insignificant differences (p>0.05). Woven bone, osteocalcin, and immunoglobulin G increased in the treatment group but was not significant (p>0.05). Alkaline phosphatase increased higher in the treatment group, with a considerable difference in the sixth week (p=0.008).Conclusion: The elevation in the production of woven bone, osteocalcin, and alkaline phosphatase at the third and sixth-week evaluations highlight the possibility that administering BHA given FD-PRP may have contributed to the healing of bone defects.