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Articles by E.U. Umeh
Total Records ( 3 ) for E.U. Umeh
  E.U. Umeh , D. Ishaleku and C.C. Iheukwumere
  Human immunodeficiency virus (HIV) and Mycobacterium tuberculosis (TB) coinfection rate was investigated among patients referred to a chest clinic in Nasarawa State, Nigeria. Out of the 344 patients who presented with respiratory problems at the clinic, 44.8% had M. tuberculosis infection, 24.7% HIV infection and 12.8% HIV/tubercle bacilli co-infection. Coinfection rate in HIV infected persons (HIV+) was 51.8 and 28.6% in those with M. tuberculosis infection. The relative risk of HIV positive persons being coinfected was 1.075, while it was 0.401 for TB infected persons. The estimated Odds Ratio (OR) shows that the risk of co-infection was 2.68 times higher among HIV+ persons than among those with tuberculosis. The attributable risk was 45% and shows the extent to which co-infection could be attributed to HIV infection. A key socio-economic variable, eating in groups, was significantly correlated with coinfection (r = 0.107; p< 0.05). The results of this study may provide a useful policy guide in the formulation of HIV and tuberculosis control measures in Nigeria.
  B.D. Igbabul , C.C. Ariahu and E.U. Umeh
  The moisture desorption isotherms of the African arrowroot lily (Tacca involucrata S) tuber mash as influenced by blanching and natural fermentation were investigated using gravimetric method. Equilibrium Moisture Contents (EMCs) of four products comprising Non Blanched Non Fermented Mash (NBNFM), Non Blanched Fermented Mash (NBFM), Blanched Non Fermented Mash (BNFM) and Blanched and Fermented Mash (BFM) were obtained at 10-30°C and water activity (aw) of 0.08-0.95. Percent Root Mean Square of error (RMS%) was used to evaluated goodness of fit of common moisture sorption models to experimental data while isosteric heats of desorption were calculated using the Clausius-Clapeyron equation. The isotherms were sigmoid in shape (type II) with the EMCs being lowest for the blanched and fermented mash. The GAB, Halsey and Oswin equations in that order provided good fit to experimental data (<10% RMS). BET monolayer moisture contents were lower for pretreated samples and ranged from 10.6-16.3 g H2O/100 g solids for the Native Mash (NBNFM) and 6.04-8.9 g H2O/100 g solids for the BFM, surface areas for monolayer desorption ranged from 370.6-572.9 m2 g-1 solid for NBNFM and 212.2-312.9 m2 g-1 solid for BFM. Net isosteric heats of desorption significantly (p<0.05) decreased with increase in moisture content with maximum values varying from 6.6 kJ mol-1 for the native mash to 27.6 kJ mol-1 for the BFM.
  E.U. Umeh , T.A. Olusi and C.U. Aguoru
  To investigate the rate of significant bacteriuria among patients attending primary health care clinics within Makurdi metropolis, aseptically collected early morning midstream urine from individuals seeking medical attention, were bacteriologically examined. Out of the 500 specimens collected, 70.8% had significant bacteriuria. The bacterial isolates were Staphylococcus aureus (42.4%), miscellaneous coliforms (27.1%), Escherichia coli (21.5%), Strept coccus pyogenes (6.8%), Klebsiella aerogenes (1.1%), Pseudomonas aeruginosa (0.6%) and Salmonella sp. (0.6%). Bacteriuria was significantly correlated with sex of subjects (r500 = 0.356; p = 0.000) and was approximately 5 times as high in women as in men (odds ratio = 5.0; 95% confidence interval). The attributable risk was 30.15%. Gram-positive bacteria predominated in the males and were responsible for 60% of bacteriuria in males. In females, the Gram-negatives accounted for 66.7% of the bacteria isolated. Antibiotic susceptibility testing of Staphylococcus aureus and the coliform bacteria to commonly used antimicrobial drugs showed high rates of resistance. The results of this study could be a useful guide in diagnosis of urinary tract infections and in planning control and therapeutic strategies.
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