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Articles by P.U. Agomo
Total Records ( 3 ) for P.U. Agomo
  A.C. Ene , T.M. Adisa , E.A. Nwankwo and P.U. Agomo
  Pregnant mice were examined to determine whether or not they transmitted Plasmodium berghei to their fetuses. On the 14th day of pregnancy, mice were inoculated with approximately 3x106 P. berghei infected red blood cells by intraperitoneal injection. The parasitemia in 20 adult females and 145 neonates was assessed using thin blood films fixed with methanol and stained with 10% giemsa solution. The average parasitemia of females at delivery was 7.5%. Malaria parasites were microscopically confirmed in 8 of the 145 neonates. Maternal parasitemia at the time of delivery was not correlated with the incidence of vertical infection (8.71%). Present study showed that this model may be used to examine vertical transmission of malaria.
  A.C. Ene , D.A. Ameh , H.O. Kwanashie , P.U. Agomo and S.E. Atawodi
  Fifteen plants were screened for in vivo antimalarial activity in albino mice. The plants are Mormodica balsamina, Artemisia maciverae, Xylopia aethiopica, Cyperus articulatus, Guiera senegalensis. Syzygium aromaticum, Zingiber officinale, Thonningea sanguinea, Sorghum sp., Securinega virosa B, Chrozophora senegalensis, Feretia apodanthera, Diospyrous mespiliformis, Centaturea perrottetti and Acacia nilotica Del. The petroleum ether, chloroform and methanol extracts from the various parts of the plants were screened for in vivo antimalarial activity in mice experimentally infected with Plasmodium berghei. Three days after inducing the malaria, the plant extracts were administered intraperitoneally to the mice daily for four days, while chloroquine was used as a standard drug control. Parasitaemia was monitored microscopically in all the groups for four days using thick and thin blood films obtained from tail vein of each mouse. At the end of this study, it was observed that the chloroform extracts of Artemisia maciverae (whole plant), Xylopia aethiopica (fruits) and Acacia nilotica Del (Leaves) have antimalarial activity. The methanol extracts of Syzygium aromaticum (cloves) and Zingiber officinale (tuber stem) showed slight antimalarial activity, while the rest of the plant extracts earlier listed showed no noticeable activity. These results suggest that many plants used as recipes in ethnomedical preparation for malaria, have no direct antimalarial activity.
  A.C. Ene , S.E. Atawodi , D.A. Ameh , H.O. Kwanashie and P.U. Agomo
  The possibility of developing experimental chloroquine resistant Plasmodium berghei NK65 from chloroquine sensitive Plasmodium berghei NK65 was evaluated. Five mice of about 12 weeks old were inoculated with Plasmodium berghei (CQ sensitive strain). Exactly 72 h after inoculation and confirmation of parasitemia, these mice were treated with 10 mg kg-1 body weight (b.wt.) every 48 h for one month. After this period, treatment was withdrawn for one week, following which sub-inoculation was made from each of the five mice to four new mice for each group respectively. Seventy two hours after parasitemia was confirmed in the sub-inoculated mice, two of the four mice in each group were treated with the correct dose of chloroquine, that is, 25 mg kg-1 b.wt. daily for four days, while the rest were not treated. Parasitemia was monitored in all the groups for two weeks using thick and thin smears of blood films made from the tail vein of mice and stained with 10% Giemsa stain at pH 7.2. Two weeks after treatment with 25 mg kg-1 b.wt. dose of chloroquine was stopped, four mice died in the first two groups, while one mouse each died in the remaining three groups. Six of the untreated mice from the replicate groups equally died beyond two weeks, while four survived. At death, the % parasitemia of mice that died were higher than those that survived after 2 weeks. These results suggest that those mice that survived two weeks after treatment with the right dose of chloroquine (25 mg kg-1 b.wt. for 4 days) contained chloroquine sensitive Plasmodium berghei NK65 before they were cleared, while those that had persistence of parasitemia at relatively high level which resulted in their death contained chloroquine resistant Plasmodium berghei NK65. This finding should be of importance in studies involving development of new therapy for chloroquine resistant malaria.
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