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Articles by C.O. Esimone
Total Records ( 3 ) for C.O. Esimone
  C.S. Nworu , P.A. Akah , C.O. Okoli , C.O. Esimone and F.B.C. Okoye
  The modulatory activity of methanolic seed extracts of Garcinia kola (ME) on Delayed-Type Hypersensitivity (DTH) response, primary and secondary humoral responses and on in vivo leucocytes mobilisation were evaluated. Acute toxicity test of the extract was also carried out. The ME at 250 and 500 mg kg-1 body weight produced significant (p<0.05) inhibition of DTH response in mice by 67.40 and 53.29%, respectively. Primary and secondary sheep red blood cells-specific antibody titres were significantly elevated when compared to the control group. Agar-induced in vivo leucocytes mobilisation into the mice peritoneal fluid was significantly (p<0.05) increased by ME at 250 and 500 mg kg-1. The total leucocytes counts were higher in the extract-treated groups when compared to the control group. The mobilised white blood cells were predominantly polymorphonuclear neutrophils (PMNs). The ME administered (orally) at 5000 mg kg-1 did not caused lethality and signs of acute intoxication after 48 h observation period. The results of this study have established cellular and humoral immunomodulatory activities of G. kola extract and justify further investigations into the effects of specific constituents of the plant on immune system components.
  U.E. Dibua , O.J. Awagu and C.O. Esimone
  A study of intestinal parasitoses was carried out in the rural and urban areas of Nsukka, a metropolitan city in south eastern Nigeria from May to December 2005. A total of 2000 fecal samples were collected from individuals with symptoms suggestive of gastroenteritis from four different laboratories located within Nsukka Local Government Area. Prevalence of Ascaris lumbricoides (17.4%), Entamoeba histolytica (11.8), Ancylostoma duodenale (11.4%) and Trichuris trichiura (11.1%) (p< 0.05) was established by the study. Infection rates of A. lumbricoides were higher in both the rural and urban centres than others (19.5 and 15.0%, respectively). A correlation between gender and urban parasitoses was also established: A. lumbricoides had higher prevalence rate among the males in the inland town of Nsukka (19 males infected), while G. lamblia was higher among the females (17 females infected). Within the University environment however, prevalence of A. lumbricoides, E. coli and A. duodenale were higher among the males (44, 43 and 39 males, respectively). Increased parasitoses was associated with unhygienic habits including eating with unwashed hands, improper waste disposal and/or gross environmental pollution with faecal matter, which constitute steady sources of contamination of surface and underground water supplies in these communities. Other factors include the common practice among children, of direct transfer of, or ingestion of cysts or ova of parasites from the anus to the mouth by not washing the hands after defecation. Evaluation of clinical cases established a close relationship between increased incidence of diarrhea, weight loss, anaemia severe abdominal cramps or pain and parasitic infestations particularly among children, thus incriminating intestinal parasites as major causes of morbidity and mortality among this group.
  C.O. Esimone , C.O. Okoli and C.O. Ayogu
  The in vitro interaction between a commercial variety of tea [Camellia sinensis L (Ternstroemiaceae)] and some antibiotics was evaluated against Staphyloccocus aureus (S. aureus) and Escherichia coli (E. coli). Synergism against S. aureus was exhibited by cloxacillin and tetracycline, while the effect of gentamycin was indifferent. Additive effect against S. aureus was exhibited by cefotaxime. The effects of streptomycin, ceftriaxone, ceftazidime, ciprofloxacin, ofloxacin and norfloxacin against S. aureus were antagonized. Gentamycin, tetracycline, cefotaxime and ceftazidime exhibited additive effects against E. coli. The activities of streptomycin, ceftriazone, ciprofloxacin, ofloxacin and norfloxacin against E. coli were antagonized. The results suggest a physicochemical basis for the interaction and indicate a potential for clinically relevant interaction when tea is consumed with antimicrobial agents.
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