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Author: search.filters.author.Yakubu, A.

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    Pitfalls in diagnosis of hepatitis B virus infection among adults Nigerians
    (2009) Ola, S. O.; Otegbayo, J. A.; Yakubu, A.; Aje, A. O.; Odaibo, G. N.; Shokunbi, W.
    "OBJECTIVE:Hepatitis B virus infection is common in Nigerians and its diagnosis is necessary for effective treatment and eradication. This study is aimed at highlighting the serological factors jeopardizing the diagnosis and treatment of the infection among Nigerians adults. PATIENTS AND METHODS:Three studies were carried out. The first study involved 56 Nigerian adults and it compared the assay of HBsAg by Haemagulation Method (HMA) with Enzyme linked immunoassay (ELISA). The second study was a comparison of Glaxo Welcome HB rapid test(GWHB) with ELISA in sero-assay of HBsAg and HBeAg among 25 Nigerian subjects while the third study was on the assay of the sera of HBsAg positive patients for HBeAg and anti-HBe in forty two Nigerian patients by ELISA. RESULTS:The sero - prevalence rates of HBsAg were 41.8% and 61.8% by HM and ELISA respectively with false HBsAg sero-positives and sero-negatives by HM of 5.4% and 25.5% respectively. Similarly, there was sero-detection of HBsAg in 84% and 80% by ELISA and GWHB respectively in 25 Nigerian adults. In addition, 19% and 64% of the 42 patients with HBsAg sero-positivity were also positive for HBeAg and anti-HBe respectively, while 31% of the patients were both HBeAg and anti-HBe sero-negative. CONCLUSION:Sero-diagnosis of HBsAg and other serological markers of infectivity in patients with HBV should be carried out by ELISA rather than HMA among adult Nigerians. Furthermore, high infectivity of the virus abounds among Nigerian with HBV infection."
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    Nigeria butchers and hepatitis B virus infection
    (2008) Ola, S. O.; Otegbayo, J. A.; Yakubu, A.; Odaibo, G. N.; Olaleye, D. O.
    Various target groups have been identified in Nigeria for studying the prevalence of hepatitis B virus infection; however there is no information on its prevalence among workers in slaughter houses. This study determined the seroprevalence of hepatitis B virus infection in Nigerian butchers at Ibadan, and comprised 360 healthy Nigerian adult subjects (180 butchers, 180 traders as controls) selected by multistage stratified sampling. A questionnaire was used to collect relevant information and included points about risk behaviour. ELISA was used to detect the hepatitis B surface antigen in the serum; the seroprevalence rate in butchers and controls was 9.4% and 3.3%, respectively (p<0.05). Risk behaviour was seen more commonly in butchers than in controls. The presence of hepatitis B surface antigen in the serum was not related to the duration of occupational exposure or the number of partners. In summary, butchers comprise a high-risk occupational group for exposure to hepatitis B virus infection. We conclude that routine screening for parenterally acquired infections in this group is thus necessary in order to identify those who will require treatment and immunisation, especially against hepatitis B virus infection.
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    Helicobacter pylori serology and evaluation of gastroduodenal disease in Nigerias with dyspepsia
    (2004) Otegbayo, J. A.; Oluwasola, O. A.; Yakubu, A.; Odaibo, G. N.; Olaleye, O. D.
    Helicobacter pylori (H. pylori) has been strongly associated with various gastroduodenal diseases worldwide with only a few studies emanating from developing countries. The objectives of this study were to determine the prevalence of serum immunoglobulin G (lgG) and underlying gastroduodenal pathology in Nigerian patients with dyspepsia and ascertain the usefulness of H.pylori lgG screening in decreasing endoscopic workload in dyspeptics in Nigeria. fifty-five patients with dyspepsia and 55 age and sex-matched apparently normal control were screened for H.pylori lgG using ImmunocombrII kits. Each of the 55 patients were also examined endoscopically with biopsies taken appropriately. Serology was positive in 94.5% and 92.7% of dyspeptic patients and controls respectivley. Gastroduodenal inflammation was the commonest endoscopic finding, 43 (78.18%). Other findings were malignant gastric tumour 6(10.9%), reflux oesophagitis 3(5.45%), gastric ulcer 2(3.64%), and duodenal ulcer in 1(1.82%). chronic gastritis was the main histopathologic finding in the dyspeptic patients. It is concluded that serum H. pylori lgG cannot be used as a screening procedure to reduce endoscopic workload in Nigerian patients with dyspepsia.