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Articles by J.B. Nikiema
Total Records ( 10 ) for J.B. Nikiema
  J. Sakande , E. Kabre , M. Lompo , E. Pale , J.B. Nikiema , O.G. Nacoulma , M. Sawadogo and I.P. Guissou
  In previous studies, using a bioassay-guided fractionation procedure; five fractions (E1F1, E2F2, E3F3, E4F4 and E5F5) from powdered Borassus aethiopum male inflorescences were extracted. Among these, the dichloromethane methanol extract E2F2 was found to exert significant anti-inflammatory and antipyretic activities and pro apoptotic effect. It seemed important to pursue the investigations to understand the mechanism of the anti-inflammatory activity. The anti-inflammatory activity was studied, C Reactive Protein (CRP) level in mice blood was immunoturbidimetry after inflammation induction and antioxidant activity was studied using 1,1 diphenyl picrylhydrazyl (DPPH). Phytochemical screening was carried out according to the methodology for chemical analysis for vegetable drugs. Among 3 fractions (I1; I2, I3) of E2F2, I1 was the most active with a percentage of inhibition (PI) of 80%. This anti-inflammatory activity was twice high than indometacin (PI = 40%). The I1 fraction cause significant decline of concentration of CRP compared with indometacin. The radical scavenging activities of I1 were approximately 4 times lower than ascorbic acid. Phytochemical analyses of Borassus aethiopum extracts revealed the presence of terpenoids, steroids and saponins which all have been shown to be potent anti-inflammatory and antioxidants. The present study confirmed the anti-inflammatory and antioxidant potential of Borassus aethiopum extracts with results comparable with those of standard compounds such as indometacin. Further studies are needed to isolate, purify and identify the chemical structure of the compounds responsible for anti-inflammatory and antioxidant activity.
  O. Da , M. Traore/ Coulibaly , R.S. Yerbanga , B. Koama , N. Ouedraogo , S. Tamboura , Z.P. Dakuyo , M.P. Sekhoacha , J.B. Nikiema , G.A. Ouedraogo , M.G. Matsabisa and J.B. Ouedraogo
  Saye is an antimalarial recipe containing Cochlospermum planchonii Hook. F. (Cochlospermaceae), Phyllanthus amarus Schumach and Thonn (Euphorbiaceae) and Cassia alata L. (Fabaceae). This study assessed the antiplasmodial and antioxidant activity of the aqueous extracts of the individual plants and their combinations. Extracts were assessed on Plasmodium berghei infected mice according to the 4 day suppressive test, for their total phenol contents according to Folin-Ciocalteu method and their antioxidant potential by FRAP assay and by the inhibition of ion induced lipid peroxidation in rat liver homogenate. Macerated extracts from Cochlospermum planchonii, Phyllantus amarus and Cassia alata gave 50.6, 46.3 and 44.9% inhibition of the parasites at 100 mg kg-1 body weight (b.wt.), respectively. At 250 mg kg-1 b.wt. the decocted extract of Cochlospermum planchoii gave 54% inhibition. Decocted extracts of the combinations Cassia alata+Phyllanthus amarus (2:1) and Phyllanthus amarus+Cochlospermum planchonii (2:1) reduced mice parasitemia by about 20-30% at 100 mg kg-1 b.wt. At the same dose, a 4.9-15.9% inhibition was observed with the decocted extract of Cassia alata+Cochlospermum planchonii (1:1) and the whole “Saye” but a higher effect of 43.7 to 50.3% was observed at 250 mg kg-1 b.wt. Phyllantus amarus extract exhibited the highest total phenol content (294 μg TAEs/mg). The highest content in flavonoids 43 μg QE/mg and the highest inhibition of lipid peroxidation (22.56%) were found for Cassia alata+Phyllanthus amarus (2:1) and the best reducing power (41.38 μmol TE/mg) for Saye. Saye appears as promising antioxidant and could be used as preventive agent in oxidative stress diseases such as malaria.
  J. Simpore , D. Ouermi , D. Ilboudo , A. Kabre , B. Zeba , V. Pietra , S. Pignatelli , J.B. Nikiema , G.B. Kabre , S. Caligaris , F. Schumacher and F. Castelli
  The present study aims at identifying the infectious agents responsible for child Acute Gastro-Enteritis (AGE) in Ouagadougou. From May 5 2006 to June 22 2008, 648 children aged from 2 to 41 months, with at least an average of 3 loose stools per day have been enrolled for coproculture, parasitology and virology test. Among them, 34 (5.25%) were HIV seropositive. A single sample of faeces from each child was used to identify enteropathogens. An infectious aetiology was identified in 41.20% of cases. The pathogenic agents detected as responsible for the AGE are: Rotavirus 21.1%; Adenovirus 1.9%; Giardia 7.6% Entamoeba; 1.08%; entero-pathogenic E. coli 41.7%; Salmonella 3.40%; Shigella 1.85% and Yersinia 1.70%. Conclusion: Therefore, these AGE etiologic agents constitute a problem of public health in Burkina Faso. Their control for the child would require: (1) a regular paediatric and clinical follow up; (2) health education of the population for food hygiene; (3) and in case of absence of HIV infection in the mother, a promotion of exclusive breast-feeding up to the age of 4 months.
  D. Ilboudo , J. Simpore , D.S. Sanou , D. Karou , D.J. Sia , D. Ouermi , C. Bisseye , T. Sagna , S. Odolini , F. Buelli , V. Pietra , S. Pignatelli , C. Gnoula , J.B. Nikiema and F. Castelli
  In Sub-Saharan Africa, many HIV infected people are co-infected with Human Herpes Virus 8 (HHV-8). Therefore, the present study aimed to: (1) identify the pregnant women co-infected by HIV and HHV-8 at Saint Camille Medical Centre; (2) use three molecules (Zidovudine, Nevirapine and Lamivudine) to interrupt the vertical transmission of HIV and (3) use the PCR technique to diagnose children, who were infected by these viruses, in order to offer them an early medical assistance. A total of 107 pregnant women, aged from 19 to 42 years were diagnosed to be HIV positive at Saint Camille Centre; among them 13 were co-infected with HHV-8. All included women received the HAART. Two to six months after childbirth their babies underwent PCR diagnosis for HIV and HHV-8. The results revealed that, among these mothers, 68.2% were housewives, 34.6% were illiterates and 60.7% did not have university degree. The prevalence of HHV-8 among these pregnant women was 12.15% and the rate of vertical transmission of both HIV and HHV-8, was 0.0%. The issue of this study revealed that the antiretroviral therapy increased the mother CD4 T-cells, prevented the transcription of the mRNA of HHV-8 and blocked HIV vertical transmission.
  J.M.K. Ky , C. Gnoula , P. Zerbo , J. Simpore , J.B. Nikiema , A. Canini and J. Millogo-Rasolodimby
  The goal of this study is to contribute to a better knowledge of certain species providing Non Woody Forest Products (NWFP) in the Centre East of Burkina Faso. This study aims to determine the state of the resources in Vitellaria paradoxa, Balanites aegyptiaca, Tamarindus indica and Lannea microcarpa. For this purpose, an inventory of the vegetation was carried out in circular pieces of land of 1250 m2, as a sample of the zone of work, based on the chart of occupation of the grounds. We are identified 158 species comprising 90 genera and 47 families. Those species represent more than 90% of the trees from which various parts are used in food, traditional pharmacopeia and the craft industry. We also showed that because of the strong anthropisation of the zone, the bad pedoclimatic conditions and the permanent bush fires, the regeneration and growth of Vitellaria paradoxa, Balanites aegyptiaca, Tamarindus indica and Lannea microcarpa are disturbed.
  D. Ouermi , J. Simpore , A.M.G. Belem , D. S. Sanou , D.S. Karou , D. Ilboudo , C. Bisseye , S.M. Onadja , V. Pietra , S. Pignatelli , C. Gnoula , J.B. Nikiema and G.B. Kabre
  Toxoplasma gondii infections can induce serious complications in HIV-infected pregnant women, leading to miscarriage; favour the mother-to-child transmission of HBV and HIV and birth defects. The purposes of this study were: (1) to quantify IgM and IgG antibodies to Toxoplasma gondii in HIV-seropositive and seronegative pregnant women, (2) to identify hepatitis B antigens (HBsAg) in pregnant women and (3) to determine T. gondii and HBV co-infections among these patients. The study was conducted at Centre Medical Saint Camille, in Burkina Faso from January to June 2009. A total of 276 HIV-infected and uninfected pregnant women were included. All women had less than 32 weeks of amenorrhoea and were aged from 19 to 42 years. Toxoplasma gondii antibodies and HBsAg were detected using ELISA method. In addition, women freely agreed to answer a questionnaire. The results of our investigations revealed that, among these pregnant women, 38.8% were illiterates, 50.4% were housewives and only 5.4% were civil servants. Positive T. gondii-specific IgM (4.7%) and IgG (27.2%) were detected. In this study, we found that HIV-seropositive status seem to be associated with great prevalence rates of both T. gondii (31.9 vs. 22.5%) and HBV (13.0 vs. 5.8%). The elevated co-infection rate in HIV-positive women suggested that they are exposed to T. gondii and HBV infections prevalently because of their immune depression. Therefore, to reduce the prevalence of T. gondii and HBV among HIV-seropositive pregnant women, lamivudine could be included in their HEART and women should follow healthy lifestyle formation.
  J.M.K. Ky , P. Zerbo , C. Gnoula , J. Simpore , J.B. Nikiema and J. Millogo-Rasolodimby
  The present research focused on the inventory and the use of plants in traditional medicine for the treatment of diseases in this area. The method was based on ethnobotanical surveys with semi-directing interview, conducted from November 2006 to December 2007 among a sample of 50 people aged between 40 and 80 years and very experienced in traditional medicine in the municipalities of Bissiga, Lalgaye and Tenkodogo. We identify 73 phytogenetic species and 175 therapeutic indications used to treat 52 diseases and the principal ones are the gastrointestinal diseases, the malaria, the various fevers, the jaundice, the skin diseases, the respiratory affections, the reproduction diseases, the hemorrhoids and the infantile diseases. In traditional veterinary pharmacopoeia, 18 phytogenetic species are used with 33 therapeutic indications to treat diseases including trypanosomiasis, tuberculosis, diarrheas and wounds. The interest of people of this area for medicinal plants, command a special attention to organize the actors and preserve the plant genetic resources.
  T. Sagna , F. Djigma , M. Zeba , C. Bisseye , S.D. Karou , D. Ouermi , V. Pietra , C. Gnoula , K. Sanogo , J.B. Nikiema and J. Simpore
  The vaginal swabs among HIV-positive women in Africa often revealed opportunistic infections such as human Papillomavirus (HPV) and Mycoplasma that induce respectively cervix cancer and diseases such as vaginosis, abortions, infertility in through salpingitis. The purposes of this study were to: (1) seek for, the prevalence of pathogens such as HPV and Mycoplasma; (2) characterize the strains of HPV and estimate their prevalence; (3) identify among these women, those who were co-infected by these pathogens in order to cure them. From February 2009 to January 2010, 156 HIV-positive women attending our medical centers and aged from 19-45 years (mean age 33.65±5.75 years) had voluntarily accepted vaginal specimen’s tests. PCR, ELISA and molecular hybridization were used for the identification and characterization of these pathogens. The results revealed the presence of Mycoplasma and HPV in 25.64 and 58.33% cases, respectively. The following HPV genotypes and the following prevalence were recorded: HPV-50'S (24.11%), HPV-18 (21.28%), HPV-30'S (18.44%) and HPV-16 (5.67%). The study also enable the identification of co-infections such as HPV-18 strains with HPV-30'S (5.67%) and HPV-30'S with HPV-50'S (3.55%). Other germs infecting the female genital tract including Candida albicans (20.51%), Escherichia coli (12.18%), Treponema pallidum (3.85%), Streptococcus agalactiae (3.21%) and Staphylococcus aureus (1.92%) were isolated. This preliminary research work showed the incidence of several genital pathogens, this could be a springboard for nationwide epidemiological study on HPV strains circulating in Burkina Faso.
  J. Sakande , P. Rouet-benzineb , H. Devaud , J.B. Nikiema , M. Lompo , O.G. Nacoulma , I.P. Guissou and A. Bado
  Borassus aethiopum MART (Arecaceae) is a plant used in traditional herbal medicine for the treatment of various diseases (bronchitis, laryngitis, antiseptic). In particular, their male inflorescences were reported to exhibit cicatrizing, antiseptic and fungicidal properties. In the present study, the biological activity of E2F2, an apolar extract from Borassus aethiopum male inflorescence was investigated on colon cancer HT29 cells. Phytochemical screening was carried according to methodology for chemical analysis for vegetable drugs. Cells proliferation was determined by the MTT assay and cells cycle distribution was analysed by using laser flow cytometer (Beckman coulter). The cytoskeleton organisation was examined under a laser scanning confocal microscope (Zess). Preliminary phytochemical analysis of E2F2 extract revealed the presence of sterols, triterpenes and saponosids. E2F2 extract (1 μg and 100 μg mL-1) significantly inhibited cell proliferation by blocking cell population in G0/G1 phase. Flow Cytometric analysis of E2F2-treated HT29 cells showed that hypoploïd cell population (sub G1 phase) increased with processing time exposures. Immunofluorescence confocal analysis revealed a disrupt actin microfilaments network in E2F2 treated-cells with a significant reduction in actin stress fibres and appearance of a random, non-oriented distribution of focal adhesion sites. These data indicate that E2F2 extract has anti-proliferative and pro-apoptotic activities. Further studies are required to unravel the mechanisms of action of E2F2 extract.
  O. Da , R.S. Yerbanga , M. Traore/Coulibaly , B.K. Koama , Z. Kabre , S. Tamboura , Z.P. Dakuyo , M.P. Sekhoacha , M.G. Matsabisa , J.B. Nikiema , J.B. Ouedraogo and G.A. Ouedraogo
  Objective: Cassia alata L. (Fabaceae), one of the three plants contained in Saye, a polyherbal antimalarial remedy was assessed for its antimalarial potential and safety in mice. Methodology: Organic extracts were prepared from the leaves and tested on the D10 chloroquine-sensitive strain of Plasmodium falciparum using the parasite lactate dehydrogenase assay. The 4 days suppressive test using Plasmodium berghei in mice was used to evaluate the in vivo antiplasmodial activity of the extracts. Animals were treated by oral route, once a day with 50, 100, 250 and 400 mg kg–1 b.wt., of the extracts. The acute toxicity of the extracts was assessed in mice according to Thompson and Weil method. The lethal effects of the extracts on animal’s body weight, tissues, biochemical and haematological parameters were determined at 823.5, 1235.5, 1853 and 2779.5 mg kg–1 b.wt., respectively. Results: The dichloromethane/methane (1:1, v/v) extract of Cassia alata was the most active against Plasmodium falciparum. The mean percent suppression of parasitemia in mice was equal to 22.5, 41.8 and 45.2% at 50, 250 and 400 mg kg–1 b.wt., respectively. No death and no clinically significant changes were recorded in mice. The maximum non-lethal dose was more than 16875 mg kg–1 in animals. No significant changes were observed in body weight, tissues morphology, biochemical and hematological parameters at doses above or equal to 2779.5 mg kg–1 b.wt. Conclusion: The dichloromethane/methanol leaf extract of Cassia alata had a good to moderate in vitro and in vivo antiplasmodial activity and was found to have low toxicity at high doses in tested animals.
 
 
 
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