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Osei Saahene R, Barnes P, Yeboah FA, Agbo E, Asante DB, Arhin SK. Expression of RAS and RAB interactor 1 (RIN1) in head and neck tumors at selected hospital in Ghana. PLoS One 2024; 19:e0301295. [PMID: 38635569 PMCID: PMC11025731 DOI: 10.1371/journal.pone.0301295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 03/13/2024] [Indexed: 04/20/2024] Open
Abstract
BACKGROUND Head and neck tumors (HNT) are tumors of the paranasal sinuses, the salivary glands and the upper aerodigestive tract. RIN1 is a Ras effector protein regulating epithelial cell properties and has been implicated in a number of cancers. METHOD The aim of this study was to investigate the expression of RIN1 in head and neck tumors. RIN1 expression was assessed using quantitative real-time PCR (qRT-PCR) and immunohistochemical staining on archival head and neck tissue samples between 2014 and 2020. RESULTS RIN1 expression was low in tissue samples as compared with the normal head and neck tissues. High and low RIN1 levels were compared with ages ≤40, >40 in the head and neck tumors of p-value 0.02. There was a significant difference with p-values of 0.001 when poor and well-moderate malignant tumors were compared. CONCLUSION Our data suggests that RIN1may play an important role in head and neck tumor progression and that its expression may provide baseline data to facilitate identification of new molecular targeted therapeutics.
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Affiliation(s)
- Roland Osei Saahene
- Department of Microbiology and Immunology, School of Medical Sciences, College of Health and Allied Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Precious Barnes
- Department of Physician Assistant Studies, College of Health and Allied Sciences School of Allied Health Sciences, University of Cape Coast, Cape Coast, Ghana
| | - F. A. Yeboah
- Department of Molecular Medicine, School of Medicine and Dentistry Sciences, College of Health Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Elvis Agbo
- Department of Human Anatomy, Histology and Embryology, College of Medicine, Jinggangshan University, Ji’an City, China
| | - Du-Bois Asante
- Department of Forensic Sciences, School of Biological Sciences, College of Agricultural and Natural Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Samuel Kofi Arhin
- Department of Physician Assistant Studies, College of Health and Allied Sciences School of Allied Health Sciences, University of Cape Coast, Cape Coast, Ghana
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Asante DB, Wiafe GA. Therapeutic Benefit of Vernonia amygdalina in the Treatment of Diabetes and Its Associated Complications in Preclinical Studies. J Diabetes Res 2023; 2023:3159352. [PMID: 38033739 PMCID: PMC10686711 DOI: 10.1155/2023/3159352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 10/31/2023] [Accepted: 11/02/2023] [Indexed: 12/02/2023] Open
Abstract
Diabetes mellitus (DM), a complex heterogeneous metabolic disorder characterized by a defect in the function of insulin, is on the rapid rise globally. Sustained hyperglycemia which is a major sign of DM is linked to the generation of reactive oxygen species which promotes adverse complications of the disorder. Traditional herbal treatment of DM is a common practice in Africa and other tropical parts of the world. Vernonia amygdalina (VA), one of the highly researched species in the Asteraceae family, has proven to possess potent antidiabetic properties. Several phytochemicals identified in multiple extracts from VA are purported to be responsible for the antidiabetic potential of the plant. In this review, we discuss the therapeutic potential of VA in diabetes and its associated complications. We appraise the current evidence and further suggest potential areas that could be effectively exploited in future VA research on diabetes.
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Affiliation(s)
- Du-Bois Asante
- Department of Biomedical Sciences, University of Cape Coast, Ghana
- Department of Forensic Science, University of Cape Coast, Ghana
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Asante DB, Mohan GRKA, Acheampong E, Ziman M, Calapre L, Meniawy TM, Gray ES, Beasley AB. Genetic analysis of heterogeneous subsets of circulating tumour cells from high grade serous ovarian carcinoma patients. Sci Rep 2023; 13:2552. [PMID: 36781954 PMCID: PMC9925814 DOI: 10.1038/s41598-023-29416-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 02/03/2023] [Indexed: 02/15/2023] Open
Abstract
Circulating tumour cells (CTCs) are heterogenous and contain genetic information from the tumour of origin. They bear specific intra- and extra-cellular protein markers aiding in their detection. However, since these markers may be shared with other rare cells in the blood, only genetic testing can confirm their malignancy. Herein, we analyse different CTC subsets using single cell whole genome DNA sequencing to validate their malignant origin. We randomly selected putative CTCs identified by immunostaining that were isolated from 4 patients with high grade serous ovarian cancer (HGSOC) and one with benign cystadenoma. We specifically targeted CTCs positive for epithelial (CK/EpCAMpos), mesenchymal (vimentinpos), and pseudoendothelial (CK/EpCAMpos plus CD31pos) markers. We isolated these cells and performed whole genome amplification (WGA) and low-pass whole-genome sequencing (LP-WGS) for analysis of copy number alterations (CNA). Of the CK/EpCAMpos cells analysed from the HGSOC patients, 2 of 3 cells showed diverse chromosomal CNAs. However, the 4 pseudoendothelial cells (CK/EpCAMpos plus CD31pos) observed in the HGSOC cases did not carry any CNA. Lastly, two of the clusters of vimentin positive cells sequenced from those found in the benign cystadenoma case had CNA. Despite the low number of cells analysed, our results underscore the importance of genetic analysis of putative CTCs to confirm their neoplastic origin. In particular, it highlights the presence of a population of CK/EpCAMpos cells that are not tumour cells in patients with HGSOC, which otherwise would be counted as CTCs.
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Affiliation(s)
- Du-Bois Asante
- Centre for Precision Health, Edith Cowan University, Joondalup, WA, 6027, Australia
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, Perth, WA, 6027, Australia
| | | | - Emmanuel Acheampong
- Centre for Precision Health, Edith Cowan University, Joondalup, WA, 6027, Australia
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, Perth, WA, 6027, Australia
| | - Melanie Ziman
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, Perth, WA, 6027, Australia
- School of Biomedical Science, University of Western Australia, Crawley, WA, 6009, Australia
| | - Leslie Calapre
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, Perth, WA, 6027, Australia
| | - Tarek M Meniawy
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, Perth, WA, 6027, Australia
- School of Medicine, University of Western Australia, Crawley, WA, 6009, Australia
- Department of Medical Oncology, Sir Charles Gairdner Hospital, Nedlands, WA, 6009, Australia
| | - Elin S Gray
- Centre for Precision Health, Edith Cowan University, Joondalup, WA, 6027, Australia.
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, Perth, WA, 6027, Australia.
| | - Aaron B Beasley
- Centre for Precision Health, Edith Cowan University, Joondalup, WA, 6027, Australia
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, Perth, WA, 6027, Australia
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Asante DB, Tsegah KM, Afrifa-Yamoah E, Kyei S, Dzidzor DJ, Anokye R. Facial dermatosis papulosa nigra, a risk for the development of pterygium and myopia: a descriptive cross-sectional study in Ghana. J Public Health Afr 2023. [DOI: 10.4081/jphia.2022.1757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Background. Dermatosis papulosa nigra (DPN) affects sun-exposed areas such as the face, neck, and trunk. The prevalence of pterygium and myopia in DPN patients in Ghana has not been studied. In this study, we examined the risk and protective factors for pterygium and myopia in DPN patients. Materials and Methods. The study involved 100 participants with facial DPN. A standard ophthalmic exam was performed using a portable slit lamp and a 3.5X magnified loop. Participants completed a closed- ended questionnaire. Logistic regression was used to summarize the level of association between DPN, myopia, and pterygium, as well as demographic factors (gender, age, occupation, family history of lesion and skin complexion). Results. 70% and 84% of participants had pterygium and myopia. Age, gender, complexion, and sun exposure were associated with pterygium and myopia (p < 0.05). Higher grade of pterygium and myopia were prevalent in the aged population. Both univariate and multivariable models highlighted that increasing age and sun exposure (outdoor) were risk factors for developing higher grade of pterygium and myopia in the DPN participants, while light skin color and male gender were respectively identified as protective factors. Conclusions. Our study is the first to examine pterygium and myopia in facial DPN patients. Most Ghanaians with facial DPN are at risk for developing pterygium and myopia.
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Acheampong E, Abed A, Morici M, Spencer I, Beasley AB, Bowyer S, Asante DB, Lomma C, Lin W, Millward M, Gray ES. Evaluation of PD-L1 expression on circulating tumour cells in small-cell lung cancer. Transl Lung Cancer Res 2021; 11:440-451. [PMID: 35399573 PMCID: PMC8988079 DOI: 10.21037/tlcr-21-819] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 01/11/2022] [Indexed: 11/21/2022]
Abstract
Background Antibodies against the programmed death-1 (PD-1) receptor and its ligand (PD-L1) have been recently approved for small-cell lung cancer (SCLC) treatment. Circulating tumour cells (CTCs) have emerged as an appealing liquid biopsy candidate that could enhance treatment decision-making in systemic therapy for SCLC patients. Several current technologies enrich CTCs using specific surface epitopes, size, rigidity, or dielectric properties. However, they are hampered by the heterogeneity of the enriched cells from blood samples. Methods We evaluated two CTC enrichment systems: EpCAM conjugated to magnetic beads and a microfluidic device (Parsortix, Angle plc). PD-L1 expression was evaluated on the isolated CTCs. Twenty-three blood samples were collected from 21 patients with SCLC. PD-L1 expression was determined on CTCs through immunofluorescent staining. Results CTCs were found in 14/23 (60.9%) of the samples, with 11/23 (47.8%) through EpCAM-coated magnetic beads (range, 4–1,611 CTCs/8 mL; median =5) and 11/20 (55.0%) using the Parsortix system (range, 1–165 CTCs/8 mL; median =4). Notably, a total of 17 EpCAM-negative CTCs were isolated using the Parsortix system. PD-L1 expression was detected on 268 of the 3,501 (7.7%) CTCs isolated with EpCAM-coated beads and in 33/366 (9.0%) of the CTCs isolated with the Parsortix system. No vimentin expression was observed in any of the detected CTCs. Conclusions Overall, we identified a population of EpCAM-negative SCLC CTCs and showed that PD-L1 expression can be assessed on CTCs from SCLC patients. Comparison to tumour and treatment outcomes is needed to validate the potential of CTCs as an alternative sample for the assessment of PD-L1 expression in SCLC.
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Affiliation(s)
- Emmanuel Acheampong
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, Australia
- Centre for Precision Health, Edith Cowan University, Joondalup, Australia
| | - Afaf Abed
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, Australia
- Centre for Precision Health, Edith Cowan University, Joondalup, Australia
- Linear Clinical Research, Hospital Avenue, Nedlands, Australia
| | - Michael Morici
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, Australia
- Centre for Precision Health, Edith Cowan University, Joondalup, Australia
| | - Isaacs Spencer
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, Australia
| | - Aaron B. Beasley
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, Australia
- Centre for Precision Health, Edith Cowan University, Joondalup, Australia
| | - Samantha Bowyer
- Linear Clinical Research, Hospital Avenue, Nedlands, Australia
- Department of Medical Oncology, Sir Charles Gairdner Hospital, Hospital Avenue, Nedlands, Australia
- University of Western Australia, School of Medicine and Pharmacology, Crawley, Australia
| | - Du-Bois Asante
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, Australia
- Centre for Precision Health, Edith Cowan University, Joondalup, Australia
| | - Chris Lomma
- Department of Medical Oncology, Fiona Stanley Hospital, Murdoch, Australia
| | - Weitao Lin
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, Australia
- Centre for Precision Health, Edith Cowan University, Joondalup, Australia
- Harry Perkins Institute of Medical Research, Nedlands, Australia
| | - Michael Millward
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, Australia
- Centre for Precision Health, Edith Cowan University, Joondalup, Australia
- Linear Clinical Research, Hospital Avenue, Nedlands, Australia
- University of Western Australia, School of Medicine and Pharmacology, Crawley, Australia
| | - Elin S. Gray
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, Australia
- Centre for Precision Health, Edith Cowan University, Joondalup, Australia
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Asante DB, Calapre L, Ziman M, Meniawy TM, Gray ES. Liquid biopsy in ovarian cancer using circulating tumor DNA and cells: Ready for prime time? Cancer Lett 2019; 468:59-71. [PMID: 31610267 DOI: 10.1016/j.canlet.2019.10.014] [Citation(s) in RCA: 91] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 10/06/2019] [Indexed: 01/06/2023]
Abstract
Liquid biopsies hold the potential to inform cancer patient prognosis and to guide treatment decisions at the time when direct tumor biopsy may be impractical due to its invasive nature, inaccessibility and associated complications. Specifically, circulating tumor DNA (ctDNA) and circulating tumor cells (CTCs) have shown promising results as companion diagnostic biomarkers for screening, prognostication and/or patient surveillance in many cancer types. In ovarian cancer (OC), CTC and ctDNA analysis allow comprehensive molecular profiling of the primary, metastatic and recurrent tumors. These biomarkers also correlate with overall tumor burden and thus, they provide minimally-invasive means for patient monitoring during clinical course to ascertain therapy response and timely treatment modification in the context of disease relapse. Here, we review recent reports of the potential clinical value of CTC and ctDNA in OC, expatiating on their use in diagnosis and prognosis. We critically appraise the current evidence, and discuss the issues that still need to be addressed before liquid biopsies can be implemented in routine clinical practice for OC management.
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Affiliation(s)
- Du-Bois Asante
- School of Medical and Health Sciences, Edith Cowan University, Australia
| | - Leslie Calapre
- School of Medical and Health Sciences, Edith Cowan University, Australia
| | - Melanie Ziman
- School of Medical and Health Sciences, Edith Cowan University, Australia; School of Biomedical Science, University of Western Australia, Crawley, Western Australia, Australia
| | - Tarek M Meniawy
- School of Medical and Health Sciences, Edith Cowan University, Australia; School of Medicine, University of Western Australia, Crawley, Western Australia, Australia; Department of Medical Oncology, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia
| | - Elin S Gray
- School of Medical and Health Sciences, Edith Cowan University, Australia.
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Adokoh CK, Asante DB, Acheampong DO, Kotsuchibashi Y, Armah FA, Sirikyi IH, Kimura K, Gmakame E, Abdul-Rauf S. Chemical profile and in vivo toxicity evaluation of unripe Citrus aurantifolia essential oil. Toxicol Rep 2019; 6:692-702. [PMID: 31372347 PMCID: PMC6657022 DOI: 10.1016/j.toxrep.2019.06.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 06/19/2019] [Accepted: 06/22/2019] [Indexed: 12/15/2022] Open
Abstract
Citrus aurantifolia (Christm.) Swingle (syn. C. MEDICA var. ACIDA Brandis) (family: Rutaceae) essential oil is one of the cheapest oils found in local markets. Although, it is generally accepted as non-toxic to vital organs and cells, majority of people are cynical about it usage. Herein, the present study reports the chemical composition and in vivo oral toxicity study of unripe C. aurantifolia essential oil found in Ghana. The toxicity of C. aurantifolia essential oil extract was investigated via oral administration using two methods: The acute toxicity single dose study (SDS) and the repeated dose method. The oil exhibited no acute toxicity but in the sub-chronic studies, the effects was dose and time-dependent. Chemical profile investigation of the oil showed 9 constituent of phytochemicals (Germacrene isomers (61.2%), Pineen (14%), Linalool dimmer (2.9%), Bornane (11%), Citral (2.9%), Anethole (1.5%), Anisole (1.1%), Safrole (0.3%) and Demitol (0.6%)). Histopathological studies revealed conditions such as necrosis, edema and inflammatory reaction in the liver, spleen and kidneys. Marginal upsurge of biochemical parameters above normal and elevated levels of lymphocytes (35.20–46.40 g/dL) demonstrated mild toxicity among the 100 mg/kg and 500 mg/kg dose groups at the sub-chronic stage. Low levels of hemoglobin (13.60 to 12.70 g/dL), MCV (34.20–24.0 fL), MCH (40.20–36.40 g/dL) along with high levels of liver enzymes confirmed the mild toxicity of the oil at sub-chronic stage. These results demonstrate that, despite consideration of lime essential oil as safe, it can have mild hematotoxic, nephrotoxic and hepatotoxic effects.
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Affiliation(s)
- Christian K Adokoh
- Department of Forensic Sciences, School of Biological Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Du-Bois Asante
- Department of Forensic Sciences, School of Biological Sciences, University of Cape Coast, Cape Coast, Ghana.,School of Medical and Health Sciences, Edith Cowan University, Australia
| | - Desmond O Acheampong
- Department of Biomedical Sciences, School of Allied Health Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Yohei Kotsuchibashi
- Department of Materials and Life Science, Shizuoka Institute of Science and Technology, 2200-2 Toyosawa, Fukuroi, Shizuoka, 437-8555, Japan
| | - Francis A Armah
- Department of Biomedical Sciences, School of Allied Health Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Ignatius H Sirikyi
- Directorate of University Health Service, University of Cape Coast, Cape Coast, Ghana
| | - Keisuke Kimura
- Department of Materials and Life Science, Shizuoka Institute of Science and Technology, 2200-2 Toyosawa, Fukuroi, Shizuoka, 437-8555, Japan
| | - Edward Gmakame
- Department of Biomedical Sciences, School of Allied Health Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Sey Abdul-Rauf
- Department of Biomedical Sciences, School of Allied Health Sciences, University of Cape Coast, Cape Coast, Ghana
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Asante DB, Henneh IT, Acheampong DO, Kyei F, Adokoh CK, Ofori EG, Domey NK, Adakudugu E, Tangella LP, Ameyaw EO. Anti-inflammatory, anti-nociceptive and antipyretic activity of young and old leaves of Vernonia amygdalina. Biomed Pharmacother 2019; 111:1187-1203. [DOI: 10.1016/j.biopha.2018.12.147] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 12/28/2018] [Accepted: 12/31/2018] [Indexed: 12/29/2022] Open
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Acheampong DO, Adokoh CK, Asante DB, Asiamah EA, Barnie PA, Bonsu DOM, Kyei F. Immunotherapy for acute myeloid leukemia (AML): a potent alternative therapy. Biomed Pharmacother 2017; 97:225-232. [PMID: 29091870 DOI: 10.1016/j.biopha.2017.10.100] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 10/11/2017] [Accepted: 10/21/2017] [Indexed: 12/20/2022] Open
Abstract
The standard therapy of AML for many years has been chemotherapy with or without stem transplantation. However, there has not been any tangible improvement in this treatment beyond induction through chemotherapy and consolidation with allogeneic stem cell transplantation or chemotherapy. Residual AML cells which later cause relapse mostly persist even after rigorous standard therapy. It is imperative therefore to find an alternative therapy that can take care of the residual AML cells. With a better understanding of how the immune system works to destroy tumor cells and inhibit their growth, another therapeutic option immunotherapy has emerged to address the difficulties associated with the standard therapy. Identification of leukemia-associated antigens (LAA) and the fact that T and NK cells can be activated to exert cytotoxicity on AML cells have further introduced diverse immunotherapeutic development strategies. This review discusses the merits of current immunotherapeutic strategies such as the use of antibodies, adoptive T cells and alloreactive NK cell, and vaccination as against the standard therapy of AML.
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Affiliation(s)
| | - Christian K Adokoh
- Department of Forensic Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Du-Bois Asante
- Department of Forensic Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Ernest A Asiamah
- Department of Biomedical Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Prince A Barnie
- Department of Forensic Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Dan O M Bonsu
- Department of Forensic Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Foster Kyei
- Department of Molecular Biology and Biotechnology, University of Cape Coast, Ghana
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Asante DB, Asmah RH, Adjei AA, Kyei F, Simpong DL, Brown CA, Gyasi RK. Detection of Human Papillomavirus Genotypes and Epstein-Barr Virus in Nasopharyngeal Carcinomas at the Korle-Bu Teaching Hospital, Ghana. ScientificWorldJournal 2017; 2017:2721367. [PMID: 28421207 PMCID: PMC5379089 DOI: 10.1155/2017/2721367] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 02/28/2017] [Accepted: 03/08/2017] [Indexed: 11/18/2022] Open
Abstract
Nasopharyngeal carcinomas (NPC) are endemic in Far East Asia and commonly harbour Epstein-Barr virus (EBV) which is known to serve as a key oncogenic promoter. Human papillomavirus (HPV) is known to contribute to the pathogenesis of NPC. However, in Ghana these two viruses have not been linked to NPC prevalence. This study was designed to determine the HPV genotypes and EBV involved in NPC tissue biopsies. A retrospective study design involving 72 formalin-fixed paraffin-embedded tissue (FFPET) samples of NPC from 2006 to 2012 were retrieved from the Department of Pathology, University of Ghana School of Biomedical and Allied Health Sciences. Sections were taken for histological analysis and for DNA lysate preparation. The DNA lysates were subjected to polymerase chain reaction (PCR) analysis to determine the presence of HPV genotypes and EBV. HPV specific primers were used to type for fourteen HPV genotypes (HPV-16, 18, 6/11, 31, 33, 35, 44, 42, 43, 45, 56, 52, 58, and 59). Out of the 72 NPC biopsies analyzed by PCR, EBV DNA was present in 18 (25%) cases and HPV DNA in 14 (19.23%). High risk HPV (HR-HPV) genotypes 18 and 31 were associated with the NPC. There were 3 (4.2%) cases of coinfection by both viruses. The EBV DNA present in the undifferentiated variant of the NPC and the histopathology of the NPC in Ghana is similar to the type described in endemic areas.
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Affiliation(s)
- Du-Bois Asante
- Department of Pathology, University of Ghana School of Biomedical and Allied Health Sciences, College of Health Sciences, P.O. Box KB 4236, Korle-Bu, Accra, Ghana
- Biomedical and Forensic Sciences, School of Biological Sciences, College of Agriculture and Natural Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Richard Harry Asmah
- Medical Laboratory Sciences, University of Ghana School of Biomedical and Allied Health Sciences, College of Health Sciences, P.O. Box KB 143, Korle-Bu, Accra, Ghana
| | - Andrew Anthony Adjei
- Department of Pathology, University of Ghana School of Biomedical and Allied Health Sciences, College of Health Sciences, P.O. Box KB 4236, Korle-Bu, Accra, Ghana
| | - Foster Kyei
- Molecular Biology and Biotechnology, School of Biological Sciences, College of Agriculture and Natural Sciences, University of Cape Coast, Cape Coast, Ghana
| | - David Larbi Simpong
- Department of Pathology, University of Ghana School of Biomedical and Allied Health Sciences, College of Health Sciences, P.O. Box KB 4236, Korle-Bu, Accra, Ghana
| | - Charles Addoquaye Brown
- Medical Laboratory Sciences, University of Ghana School of Biomedical and Allied Health Sciences, College of Health Sciences, P.O. Box KB 143, Korle-Bu, Accra, Ghana
| | - Richard Kwasi Gyasi
- Department of Pathology, University of Ghana School of Biomedical and Allied Health Sciences, College of Health Sciences, P.O. Box KB 4236, Korle-Bu, Accra, Ghana
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Asante DB, Effah-Yeboah E, Barnes P, Abban HA, Ameyaw EO, Boampong JN, Ofori EG, Dadzie JB. Corrigendum to "Antidiabetic Effect of Young and Old Ethanolic Leaf Extracts of Vernonia amygdalina: A Comparative Study". J Diabetes Res 2017; 2017:5618548. [PMID: 29349088 PMCID: PMC5733616 DOI: 10.1155/2017/5618548] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 11/16/2017] [Indexed: 11/24/2022] Open
Abstract
[This corrects the article DOI: 10.1155/2016/8252741.].
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Affiliation(s)
- Du-Bois Asante
- Department of Biomedical Sciences, School of Allied Health Sciences, College of Health and Allied Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Emmanuel Effah-Yeboah
- Department of Biomedical Sciences, School of Allied Health Sciences, College of Health and Allied Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Precious Barnes
- Department of Biomedical Sciences, School of Allied Health Sciences, College of Health and Allied Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Heckel Amoabeng Abban
- Department of Clinical Nutrition and Dietetics, School of Allied Health Sciences, College of Health and Allied Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Elvis Ofori Ameyaw
- Department of Biomedical Sciences, School of Allied Health Sciences, College of Health and Allied Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Johnson Nyarko Boampong
- Department of Biomedical Sciences, School of Allied Health Sciences, College of Health and Allied Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Eric Gyamerah Ofori
- Department of Biochemistry, School of Biological Sciences, College of Agriculture and Natural Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Joseph Budu Dadzie
- Department of Biomedical Sciences, School of Allied Health Sciences, College of Health and Allied Sciences, University of Cape Coast, Cape Coast, Ghana
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Ansah C, Adinortey MB, Asiedu-Larbi J, Aboagye B, Asante DB, Nyarko AK. In vivo assessment of the toxic potential of Dissotis rotundifolia whole plant extract in Sprague–Dawley rats. Asian Pac J Trop Biomed 2016. [DOI: 10.1016/j.apjtb.2016.04.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Asante DB, Effah-Yeboah E, Barnes P, Abban HA, Ameyaw EO, Boampong JN, Ofori EG, Dadzie JB. Antidiabetic Effect of Young and Old Ethanolic Leaf Extracts of Vernonia amygdalina: A Comparative Study. J Diabetes Res 2016; 2016:8252741. [PMID: 27294153 PMCID: PMC4884890 DOI: 10.1155/2016/8252741] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Revised: 03/24/2016] [Accepted: 04/19/2016] [Indexed: 11/18/2022] Open
Abstract
The young leaves of Vernonia amygdalina are often utilized as vegetable and for medicinal purpose compared to the old leaves. This study was designed to evaluate and compare the antidiabetic effects between ethanolic leaf extracts of old and young V. amygdalina on streptozotocin (STZ) induced diabetic rat for four weeks. Preliminary screening of both young and old ethanolic extracts revealed the presence of the same phytochemicals except flavonoids which was only present in the old V. amygdalina. Difference in antioxidant power between the young and old leaf extracts was statistically significant (p < 0.05). Both leaf extracts produced a significant (p < 0.05) antihyperglycaemic effect. Also results from treated rats revealed increasing effect in some haematological parameters. Similarly, the higher dose (300 mg/kg) of both extracts significantly (p < 0.05) reduced serum ALT, AST, and ALP levels as compared to the diabetic control rats. Results also showed significant (p < 0.05) decrease in LDL-C and VLDL-C in the extract-treated rats with a corresponding increase in HDL-C, as compared to the diabetic control rats. Moreover histopathological analysis revealed ameliorative effect of pathological insults induced by the STZ in the pancreas, liver, and spleen, most significantly the regeneration of the beta cells of the islets of Langerhans in treated rats.
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Affiliation(s)
- Du-Bois Asante
- Department of Biomedical Sciences, School of Allied Health Sciences, College of Health and Allied Sciences, University of Cape Coast, Cape Coast, Ghana
- *Du-Bois Asante:
| | - Emmanuel Effah-Yeboah
- Department of Biomedical Sciences, School of Allied Health Sciences, College of Health and Allied Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Precious Barnes
- Department of Biomedical Sciences, School of Allied Health Sciences, College of Health and Allied Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Heckel Amoabeng Abban
- Department of Clinical Nutrition and Dietetics, School of Allied Health Sciences, College of Health and Allied Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Elvis Ofori Ameyaw
- Department of Biomedical Sciences, School of Allied Health Sciences, College of Health and Allied Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Johnson Nyarko Boampong
- Department of Biomedical Sciences, School of Allied Health Sciences, College of Health and Allied Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Eric Gyamerah Ofori
- Department of Biochemistry, School of Biological Sciences, College of Agriculture and Natural Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Joseph Budu Dadzie
- Department of Biomedical Sciences, School of Allied Health Sciences, College of Health and Allied Sciences, University of Cape Coast, Cape Coast, Ghana
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Amoani B, Ameyaw EO, Asante DB, Armah FA, Prah J, Kwesi Botchey CP, Boampong JN. Effect of pre-existing Schistosoma haematobium infection on Plasmodium berghei multiplications in imprinting control region mice. Asian Pac J Trop Biomed 2015. [DOI: 10.1016/j.apjtb.2015.03.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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