March 2009

Seasonal variations of malaria transmission in Western Cameroon highlands: Entomological, parasitological and clinical investigations

A cross-sectional study on malaria transmission was carried out in Mangoum, a village situated in the western highland region of Cameroon in October 2005 and May 2006, to assess malaria parasite prevalence in a cohort of children and vectors biting habits and entomological inoculation rate. Mosquitoes were collected by landing catches on volunteers. Members of the Anopheles gambiae complex and...

Author(s): Jean Atangana, Etienne Fondjo, Abraham Fomena, Joseph  Lebel Tamesse, Salomon Patchoké, Hamadou N. M. Ndjemaï, and Prosper A Bessong Ndong  

March 2009

Studies of human HbAA erythrocyte osmotic fragility index of non malarious blood in the presence of five antimalarial drugs

The capacity of human HbAA erythrocytes of non-malarious blood to withstand osmotic stress in the presence of five antimalarial drugs, Chloroquine phosphate, Quinine, FansidarTM, CoartemTM and HalfanTM was studied by in vitro investigations.  Aqueous solutions of four increasing concentrations of 0.2, 0.4, 0.6 and 0.8% (w/v) of the drugs were used in this investigation. The...

Author(s): Chikezie, P. C. , Uwakwe, A. A.  and Monago, C. C. 

March 2009

Efficiency of intracellular cryoprotectants on the cryopreservation of sheep oocytes by controlled slow freezing and vitrification techniques

Oocyte cryopreservation has encompassed various technical difficulties and thus remained a challenge to many cryobiologists. The effect of three widely used cryoprotectants and two cryopreservation techniques on the post thaw recovery rate of morphologically normal sheep oocyte, their fertilizability and developmental competence were analyzed. Ethylene glycol, propylene glycol and Dimethyl Sulfoxide (DMSO) at...

Author(s): Dike I. P.