Browsing by Author "Tagoe, E.A."
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Item Circulating cell-free DNA integrity as a diagnostic and prognostic marker for breast and prostate cancers(Cancer Genetics, 2019-04) Arko-Boham, B.; Aryee, N.A.; Blay, R.M.; Owusu, E.D.A.; Tagoe, E.A.; Doris Shackie, E.S.; Debrah, A.B.; Adu-Aryee, N.A.Background Cancer incidence and its related mortality is rising and is currently the second leading cause of death globally. In Africa, breast and prostate cancer in females and males, respectively, are the worst globally. However, biomarkers for their early detection and prognosis are not well developed. This study sought to investigate circulating cell-free DNA (ccfDNA) integrity and its potential utility as diagnostic and/or prognostic biomarker. Circulating cell-free DNA (ccfDNA) is degraded DNA fragments released into the blood plasma. In healthy individuals, the source of ccfDNA is solely apoptosis, producing evenly sized shorter DNA fragments. In cancer patients, however, necrosis produces uneven longer cell-free DNA fragments in addition to the shorter fragments originating from apoptosis. DNA integrity, expressed as the ratio of longer fragments to total DNA, may be clinically useful for the detection of breast and prostate cancer progression. Methods Sixty-four (64) females, consisting of 32 breast cancer patients and 32 controls, and 61 males (31 prostate cancer patients and 30 controls) were included in the study. Each participant donated 5 ml peripheral blood from which sera were separated. Real-time qPCR was performed on the sera to quantify ALU 115 and 247 levels, and DNA integrity (ALU247/ALU115) determined. Results & Conclusion ALU species 115 and 247 levels in serum were elevated in breast and prostate cancer patients compared to their counterpart healthy controls. DNA integrity was higher in prostate cancer patients than in the control, but in breast cancer patients was lower compared to their controls. In prostate but not in breast cancers, DNA integrity increased with disease severity and higher staging.Item Dyslipidaemia is common among patients with type 2 diabetes: a cross-sectional study at Tema Port Clinic(BMC Research Notes, 2019-04) Ofori, E.K.; Owusu-Ababio, D.; Tagoe, E.A.; Asare-Anane, H.Objective This study aimed to evaluate dyslipidemia in Ghanaian subjects with type 2 diabetes. Results Hundred individuals with type 2 diabetes and 61 apparently healthy controls participated. The prevalence of hypercholesterolemia among persons with type 2 diabetes was 53%. Blood pressure, fasting blood glucose (FBG), triglyceride (TG), low-density lipoproteins (LDL) and alanine transaminase (ALT) levels were higher in persons with type 2 diabetes compared with the control group (p < 0.01). Positive correlations were found within persons with type 2 diabetes for triglyceride vs FBG; ALT vs age and aspartate transaminase (AST) vs TG (p < 0.05 respectively). This study demonstrated hyperlipidemia and poor liver health in persons with type 2 diabetes.Item Effect of Hepatitis B Virus (HBV) Infection on Lipid Profile in Ghanaian Patients(Virology: Research and Treatment, 2019-02) Quaye, O.; Amuzu, B.G.; Adadey, S.M.; Tagoe, E.A.Background Worldwide, approximately 257 million people have chronic hepatitis B virus (HBV) infection, with the highest infection rates recorded in Africa and Asia. Although HBV infection has been associated with dyslipidemia, which may lead to death via liver related complications, the effect of the virus on the lipid profile of patients remain unclear. This study was designed to evaluate the effect of chronic hepatitis B virus infection on lipid profile of sero-positive individuals from Ghana. Methods Blood samples were collected from chronic HBV infected patients who were recruited from the Korle-Bu Teaching Hospital, Accra, and HBV sero-negative healthy volunteers who were used as controls. Demographic and clinical data were obtained using a structured questionnaire. Blood pressure and body mass index were determined, and HBV profile markers and lipid profiles of the patients were determined using a commercially available kit and a chemistry analyzer, respectively. Results Triglycerides, low density lipoproteins (LDL), high density lipoproteins (HDL), very low density lipoproteins (VLDL), and total cholesterol were used as indices of lipid metabolism disorder. Body mass index and diastolic blood pressures were significantly elevated in patients compared to healthy volunteers. Conclusion The observed high total cholesterol and LDL, with a significantly lower HDL levels compared to healthy controls suggest an increased cardiovascular disease risk index in the patients. There is therefore the need to regularly monitor HBV infected patients for signs of cardiovascular diseases.Item Haptoglobin phenotypes with weak antioxidant capacity increase risk factors of cardiovascular disease in Ghanaian HIV-infected patients on highly active antiretroviral therapy(Tropical Medicine and International Health, 2019-03) Tagoe, E.A.; Tagoe, I.N.A.; Kuleape, J.A.; Puplampu, P.; Amanquah, S.; Asare-Anane, H.; Quaye, O.OBJECTIVE: Highly active antiretroviral therapy (HAART) has considerably reduced HIV/AIDS-related morbidity and mortality; however, the therapy has been associated with the development of cardiovascular disease (CVD), and genetic predisposition factors may aggravate disease outcome. This study was aimed at investigating the relationship between haptoglobin phenotypes and risk factors of CVD in HIV patients. METHODS: A total of 105 HIV sero-positive patients on HAART and 75 HIV-infected HAART-naïve individuals were enrolled in the study. Socio-demographics and clinical characteristics of the participants were obtained using a well-structured questionnaire. Lipid profile, lactate dehydrogenase (LDH) and haptoglobin (Hp) phenotypes were analysed from serum whiles haemoglobin (Hb) level, CD4+ cell count and HIV viral RNA load were determined using whole blood. RESULTS: Atherogenic index of plasma (AIP) was significantly higher in patients on HAART than the naïve group (P < 0.05). Age, BMI, visceral fat, systolic blood pressure LDH and lipid variables strongly and positively correlated with AIP (P < 0.05), with the exception of HDL-c (P < 0.001) which showed a negative correlation. HAART was associated with hypertension (χ2 = 4.33, P = 0.037), hypercholesterolaemia (χ2 = 10.99, P < 0.001), elevated LDL-c (χ2 = 10.30, P < 0.001) and decreased HDL-c (χ2 = 3.87, P = 0.09). Hp2-2 and Hp0 collectively was strongly associated with hypertension (OR = 2.54, P = 0.011), obesity (OR = 5.97, P < 0.001) and hypercholesterolaemia (OR = 2.99, P < 0.001). CONCLUSION: HIV/AIDS patients on HAART expressing Hp phenotypes with weak antioxidant capacity have an increased risk of developing CVD.Item Helicobacter Pylori Variants with ABC-Type Tyrosine Phosphorylation Motif in Gastric Biopsies of Ghanaian Patients(Hindawi, 2021) Tagoe, E.A.; Awandare, G.A.; Quaye, O.; Asmah, R.H.; Archampong, T.N.; Osman, M.A.; Brown, C.A.Background. Helicobacter pylori pathogenicity and disease severity are determined by the tyrosine phosphorylation motifs of CagA protein. This study is aimed at detecting the presence of H. pylori and identifying the CagA tyrosine phosphorylation motifs in Ghanaian patients. Material and Methods. A total of 94 archival genomic DNA samples from gastric biopsies were used for the study, and H. pylori was detected by amplifying the 16S rRNA gene. The 3′-end variable region of the cagA gene was amplified, and the entire 3′-end was sequenced and translated into amino acids. Results. H. pylori was detected in 53.2% (50/94) of the samples, and all the detected bacteria harboured the cagA gene. Two variants of the bacteria were identified based on the size of the amplified cagA gene: 207 bp and 285 bp. The 207 bp and 285 bp variants accounted for 74% and 22%, respectively, and 4% showed both fragments. Translated amino acid sequence of the cagA gene showed EPIYA-A, EPIYA-B, and EPIYA-C (ABC type) motifs, indicating the Western variant. The CagA protein C-terminal showed insertion of amino acids in the sequence flanking the EPIYA-A motif at the N-terminal and a complete deletion of the EPIYA-CC and EPIYA-CCC motifs together with the flanking sequences. Conclusions. H. pylori identified were Western variant (ABC type) with unique amino acid insertions, suggesting unique variants in Ghanaian patients. Further investigation is however required to understand the role of the molecular diversity of the variant in gastric disease outcome.Item Helicobacter pylori-induced alteration of epithelial cell signaling and polarity: A possible mechanism of gastric carcinoma etiology and disparity(Cytoskeleton, 2013-07) Osman, M.A.; Bloom, G.S.; Tagoe, E.A.Gastric cancer, a disease of disparity associated with Helicobacter pylori (H. pylori) infection, is the world's second leading cause of cancer deaths. The pathogen H. pylori target the epithelial adhesion receptors, E-cadherin, and β1-integrin, to modulate the host cytoskeleton via disruption of the epithelial cell polarity necessary for maintaining the infection, but how this leads to the development of the carcinoma is widely unclear. While Rho family GTPases' signaling to the cytoskeleton and these receptors is required for initiating and maintaining the infection, the responsible effectors, and how they might influence the etiology of the carcinomas are currently unknown. Here we discuss the potential role of the Cdc42-IQGAP1 axis, a negative regulator of the tumor suppressors E-cadherin and β1-integrin, as a potential driver of H. pylori-induced gastric carcinoma and propose avenues for addressing its disparity. Chronic dysfunction of the IQGAP1-signaling pathway, resulting from H. pylori-induced disruption of cell polarity, can explain the pathogenesis of the carcinoma, at least, in subsets of infected population, and thus could provide a potential means for personalized medicine. © 2013 Wiley Periodicals, Inc.Item Homozygous deletion of both GSTM1 and GSTT1 genes is associated with higher CD4+ T cell counts in Ghanaian HIV patients(Public Library of Science, 2018-05) Kuleape, J.A.; Tagoe, E.A.; Bonney, E.Y.; Quaye, O.Glutathione S-transferase (GST) family of enzymes are involved in a two-stage detoxification process of a wide range of environmental toxins, carcinogens and xenobiotics. The GST enzymes play important roles in oxidative stress pathways, and polymorphisms in the GSTM1 and GSTT1 genes mediate susceptibility and outcome in different diseases. Human immunodeficiency virus (HIV) infection is associated with oxidative stress, but there is limited data on the frequency of deleted GSTM1 and GSTT1 genes in HIV/AIDS patients and their effect on progression among Ghanaians. This study sought to investigate the association between homozygous deletion of GSTM1 and GSTT1 genes (both null deletion) with HIV/AIDS disease progression in Ghanaian patients. HIV-infected individuals on antiretroviral therapy (ART), ART-naïve HIV patients, and HIV seronegative individuals were recruited for the study. HIV/AIDS disease progression was assessed by measuring CD4+ cell count and viral load of the patients, and GST polymorphism was determined by amplifying the GSTT1 and GSTM1 genes using multiplex PCR, with CYP1A1 gene as an internal control. The mean CD4+ count of patients that were naïve to ART (298 ± 243 cells/mm3) was significantly lower than that of patients on ART (604 ± 294 cells/mm3), and viral load was significantly lower in the ART-experienced group (30379 ± 15073 copies/mm3) compared to the ART-naïve group (209882 ± 75045 copies/mm3). Frequencies of GSTM1 and GSTT1 deletions were shown to be 21.9% and 19.8%, respectively, in the HIV patients, and patients with homozygous deletion of both GSTM1 and GSTT1 were more likely to have their CD4+ count rising above 350 cells/mm3 (OR = 6.44, 95% CI = 0.81–51.49, p = 0.039) suggesting that patients with homozygous deletion of GSTM1 and GSTT1 genes have slower disease progression. The findings of this study show that double deletion of glutathione S-transferases M1 and T1 is statistically associated with normal CD4+ count in patients diagnosed with HIV/AIDS. Further study is required to investigate the clinical importance of the both null deletion in HIV patients. © 2018 Kuleape et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.Item Imbalance of antioxidant enzymes activities and trace elements levels in Ghanaian HIV-infected patients(PLOS ONE, 2019-07-10) Quaye, O.; Kuleape, J.A.; Bonney, E.Y.; Puplampu, P.; Tagoe, E.A.Human immunodeficiency virus (HIV) infection and antiretroviral therapy (ART) have been associated with high oxidative stress in HIV patients. The disparity in antioxidant-oxidant levels in HIV patients favours viral replication and disease progression. This study aimed at determining the effect of ART on antioxidant enzymes activities and trace elements levels in Ghanaian HIV patients. A total of 242 participants; comprising of 105 HIV-infected patients on ART, 77 HIV-infected ART-naïve, and 60 HIV seronegative controls were recruited for the study. Whole blood was collected and used for haematological profiling, and the determination of CD4+ counts, superoxide dismutase (SOD) activity and trace element levels. Serum was used for liver function tests and the determination of glutathione reductase (GR) activity, and plasma was used to estimate reduced glutathione (GSH) levels. Low levels of haemoglobin (HB), hematocrit, mean cell volume (MCV) and mean cell hemoglobin (MCH), and trace elements were found in ART-naïve patients compared to those on ART and the seronegative controls. In the ART-naïve patients, glutathione reductase (GR) activity and reduced glutathione (GSH) level were significantly low compared to patients on ART and seronegative controls. Activity of SOD was significantly reduced in ART-naïve patients compared to those on ART and the control group, and manganese is the only trace element that showed a strong negative correlation with SOD activity and a positive and significant correlation with CD4+ count, and therefore needs to be investigated further. The study suggests that assessing antioxidant levels or enzymes activities of patients infected with HIV should be considered during therapy.Item Smokers are over-represented in subjects with ahaptoglobinemia in Ghana(Journal of Atherosclerosis and Thrombosis, 2010) Quaye, I.K.; Tagoe, E.A.; Amoah, A.G.; Agbolosu, K.; Aryee, N.A.Aim: Smoking has been established as a major risk factor for cardiovascular disease. It causes oxida-tive stress and sub-clinical inflammation, which undermine the antioxidant defense system of the body. We reasoned that natural antioxidant defense systems may be compromised in smokers. To this end, we examined whether haptoglobin (Hp), a potent antioxidant, is impacted negatively by smoking. Methods: Study participants consisted of 121 current smokers and 105 healthy non-smokers without diabetes and without blood smear-positive P. falciparum. Smokers were defined as individuals who smoke at least 1 cigarette a week and are current smokers (occasional and regular). Baseline demographics, hematological indices, lipid profiles, blood pressure, lactate dehydrogenase activity and haptoglobin phenotypes were determined. Results: Ahaptoglobinemia was found to be highly overrepresented in smokers (odds ratio (OR) =3.1, 95% confidence interval (CI)= 1.5-6.5, p=0.002). This observation was not attributed to intravas-cular hemolysis. Hp2-2 phenotype was found to be under represented in smokers (OR=0.53, 95% CI = 0.28-0.99, p = 0.05). Smoking was confirmed to augment hypertension (diastolic blood pressure (DBP) and systolic blood pressure (SBP) in male smokers (p = 0.0001). Interestingly, however, this appeared not to be related to lipid metabolism, as HDL was elevated (p = 0.0007) while LDL was decreased (p= 0.004) in smokers within the study population. Conclusion: We conclude that smoking is a risk factor for ahaptoglobinemia, which will impact negatively on anti-oxidant defenses and augment pro-oxidative stress effects.Item Thyroid hormone status in Ghanaian patients with chronic kidney disease(Pan African Medical Journal, 2018-03) Aryee, N.A.; Tagoe, E.A.; Anomah, V.; Arko-Boham, B.; Adjei, D.N.Introduction There is limited data on the prevalence of thyroid dysfunction in Ghanaian individuals with chronic kidney disease (CKD). Studies exploring the effect of thyroid hormones on renal function decline are also scanty. Unrecognized thyroid dysfunction in CKD may increase the burden of adverse health outcomes. The aim of this study was to determine thyroid hormone status and lipid profiles in patients with CKD attending the Renal Unit of the Korle-Bu Teaching Hospital. Methods 60 clinically euthyroid patients with CKD, and 65 clinically euthyroid subjects without CKD were recruited for this study. Estimation of effective glomerular filtration rate (eGFR) was done using the 4-variable Modification of Diet in Renal Disease (MDRD) formula with subsequent staging of CKD (stages 2-4). Collected venous blood samples from all study participants were analyzed for creatinine, free triiodothyronine (FT3), free thyroxine (FT4), thyroid stimulating hormone (TSH), total cholesterol (TC), high density lipoprotein (HDL) cholesterol, low density lipoprotein (LDL) and triglycerides (TG). Results Levels of TC, HDL, LDL, and TSH levels did not differ significantly between the two study groups. However, TG, VLDL, FT3 and FT4 levels were significantly higher in CKD patients than in the control group. TC, TG, HDL, LDL, VLDL and TSH levels were not significantly different between stages of CKD in study subjects, although FT4 and FT3 levels were significantly different between all stages of CKD. Conclusion Higher levels of FT3 and FT4 but not TSH, are associated with the incidence of CKD and eGFR decline in Ghanaian CKD patients.