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Search Results: 1 - 10 of 19320 matches for " Wamtinga Richard Sawadogo "
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Anti-inflammatory, Analgesic and Antipyretic Activities of Dicliptera verticillata
Wamtinga Richard Sawadogo,Rainatou Boly,Marius Lompo,Noya Some
International Journal of Pharmacology , 2006,
Abstract: The methanol extract of Dicliptera verticillata stems with leaves was investigated for its anti-inflammatory, analgesic and antipyretic activities in animal models. The extract was found to reduce significantly (p<0.001) the formation of oedema induced by carrageenan after 3 h. In the acetic acid induced writhing model, the extract has shown a good analgesic effect characterised by a significant reduction (p<0.001) in the number of writhes with all the doses used when compared to the control untreated group. In the antipyretic assay, the extract was efficient on yeast-induced hyperpyrexia in mice, mainly 2 h after drugs administration. The results give a scientific basis to the traditional uses of Dicliptera verticillata, mainly those involving pain, fever and inflammation.
Phenolic Content and Antioxidant Activity of Six Acanthaceae from Burkina Faso
Wamtinga Richard Sawadogo,Aline Meda,Charles Euloge Lamien,Martin Kiendrebeogo
Journal of Biological Sciences , 2006,
Abstract: In this study the total phenolic and flavonoid content as well as the antioxidant activity of six Acanthaceae namely Blepharis lineariifolia PERS, Dicliptera verticillata (FORRSK.) C. CHRISTENS, Dyschoriste perrottetii (NEES) O. KTZE, Hygrophila auriculata (SCHUMACH.) HEINE, Lepidagathis anobrya NEES, Nelsonia canescens (LAM) SPRENG were evaluated. The total phenolic and flavonoid of their aqueous acetone extract were assessed by Folin-ciocalteu and AlCl3 method, respectively, whereas the antioxidant activities were determined by the DPPH method. Lepidagathis anobrya, Hygrophila auriculata and Nelsonia canescens which had the highest phenolic content, were found to possess the best antioxidant activities. The results suggest that these plants are good sources of antioxidants and support their use in cardiovascular and antiinflammatory diseases.
A Survey of Marine Natural Compounds and Their Derivatives with Anti-Cancer Activity Reported in 2011
Wamtinga Richard Sawadogo,Marc Schumacher,Marie-Hélène Teiten,Claudia Cerella,Mario Dicato,Marc Diederich
Molecules , 2013, DOI: 10.3390/molecules18043641
Abstract: Cancer continues to be a major public health problem despite the efforts that have been made in the search for novel drugs and treatments. The current sources sought for the discovery of new molecules are plants, animals and minerals. During the past decade, the search for anticancer agents of marine origin to fight chemo-resistance has increased greatly. Each year, several novel anticancer molecules are isolated from marine organisms and represent a renewed hope for cancer therapy. The study of structure-function relationships has allowed synthesis of analogues with increased efficacy and less toxicity. In this report, we aim to review 42 compounds of marine origin and their derivatives that were published in 2011 as promising anticancer compounds.
Evaluation of Antioxidant Activity, Total Phenolic and Flavonoid Contents of Entada africana Guill. et Perr. (Mimosaceae) Organ Extracts
Andre Tibiri,Richard W. Sawadogo,Noufou Ouedraogo
Research Journal of Medical Sciences , 2012, DOI: 10.3923/rjmsci.2010.81.87
Abstract: Entada africana is an endangered West African medicinal plant because of a large scale use of its roots. To evaluate and compare the medicinal potential of all plant parts for a sustainable use the radical scavenging activity (DPPH method) and the phenolic compound contents (Folin-Ciocalteu method) of aerial parts and roots were investigated. Aqueous extracts of leaves, stem barks and roots were used for this investigation. Methanol extract was also used for the roots. The fourth extracts showed high radical scavenging activity (ranging from 1.27-3.36 μg mL-1) similar to those of quercetin, rutoside and ascorbic acid (0.8, 5.20 and 5.32 μg mL-1, respectively). Fractions obtained from the four extracts with chloroform, ethyl acetate, methanol and water also showed high activity with EC50 ranging from 3.39-16.72 μg mL-1 except chloroform fractions (EC50>36 μg mL-1). The total phenolic and flavonoid contents of the four extracts and their twelve fractions were quite high, ranging from 17.10-43.50% TAE. The leave extracts showed an interesting free radical scavenging activity and phenolic content as to be preconized for use instead of the roots.
Some Biological Features of Aphtona whitfieldi Bryant (Coleoptera: Chrysomelidae), an Insect Pest of Jatropha curcas L. in Burkina Faso  [PDF]
Alizèta Sawadogo, Souleymane Nacro
Advances in Entomology (AE) , 2016, DOI: 10.4236/ae.2016.44024
Abstract: Aphthona whitfieldi Bryant (Coleoptera: Chrysomelidae) is a major insect pest of Jatropha curcas L. (Euphorbiacae) in Burkina Faso and other countries in West Africa. The insect pest feeds on the roots and the leaves of the plant. When the attacks are heavy, the plant may lose all its leaves and die off. Unfortunately, little information is available on the biology of this insect pest. A study was conducted on the biology of this insect pest in the Sissili province, South Burkina Faso and resulted in the knowledge of some of the biological features of the insect pest. Aphthona whitfieldi was reared from 13th July to 22th October 2015. Larvae and pupae were collected in J. curcas plantations near Léo, the capital city of the Sissili province, and brought to the laboratory for rearing. The insects were observed daily and the dimensions and the duration of each stage were recorded. We recorded two larval stages (1st and 3rd): a pre-pupa and a pupal stage. The pupa was free and white milk-like. Both the pre-pupa and the pupal stages lasted for five days. The 1st instar larva was smaller than the third one.
The Effect of Aphthona whitfieldi (Coleoptera: Chrysomelidae) Populations’ Density on the Growth of Jatropha curcas in Burkina Faso  [PDF]
Alizèta Sawadogo, Souleymane Nacro
Advances in Entomology (AE) , 2017, DOI: 10.4236/ae.2017.54013
Abstract: Aphthona whitfieldi Bryant (Coleoptera: Chrysomelidae) is a major insect pest of Jatropha curcas L. in Burkina Faso. This study aimed at evaluating the effect of the insect pest populations’ density on the growth of the plant. To achieve this purpose, 90-day aged single plants were caged in a randomized complete block design experiment with 5 treatments and 5 replicates. The treatments consisted of increasing numbers of adults of A. whitfieldi used to infest the caged plants: T0 (0 adult = check), T1 (100 adults), T2 (200 adults), T3 (300 adults), T4 (400 adults). All caged plants were infested 21 days after transplantation and the evaluation started 14 days later one on every 2-week basis from September 18, 2014 to February 19, 2015. The growth parameters of the plant were assessed. The results showed that the intensity of damage caused by A. whitfieldi on the growth of young plants of J. curcas varied according to the treatment (i.e., according to the number of adult individuals infesting the plant at the beginning). The higher the number, the heavier the level of damage caused by the pest. So, the growth of the J. curcas plant was inversely proportional to the number of A. whitfieldi infesting individuals. There was also a positive linear correlation between the defoliation rate and the height of the seedlings. The status of this insect pest was confirmed by the results of this study.
Poetry and cultural identity in F. T. Pacéré's writing: from identity affirmation to universal humanism
G Sawadogo
Tydskrif vir letterkunde , 2007,
Abstract: My concern is the socio-cultural characteristics of F. T. Pacéré's poetry and their aesthetic and semantic structuring role. Pacéré's poetry is not just about identity affirmation; it is also about being open to the world, namely other people and other cultures. Through this, it seeks to achieve universal humanism. I conclude my study by arguing that like the Burkinabè written poetry of the 1970s, Pacéré's poetry operates on a double dialogic and dialectic process, as required by the negritude movement: rooting in his native culture and openness to the world.
Poésie et identité culturelle chez F. T. Pacéré : de l'affirmation identitaire à l'humanisme universel
G Sawadogo
Tydskrif vir letterkunde , 2007,
Abstract: Notre propos cerne d'abord les caractéristiques socio-culturelles de la poésie pacéréenne tout en définissant leur r le dans la structuration esthétique et sémantique des textes. Il montre ensuite que cette poésie, loin de se limiter à la stricte affirmation identitaire, se veut aussi une poésie ouverte sur le monde, notamment sur les autres peuples et les autres cultures, d'où les marques de son humanisme universel. Il conclut enfin que la poésie pacéréenne, à l'instar de l'ensemble de la poésie burkinabè écrite des années 1970 obéit à une double exigence de type dialogique et dialectique telle que le préconisaient déjà les chantres du mouvement négritudien : enracinement dans sa culture d'origine et ouverture sur le monde.
Maximum Likelihood Estimation of the Parameters of Exponentiated Generalized Weibull Based on Progressive Type II Censored Data  [PDF]
Ibrahim Sawadogo, Leo Odongo, Ibrahim Ly
Open Journal of Statistics (OJS) , 2017, DOI: 10.4236/ojs.2017.76067
Abstract: Exponentiated Generalized Weibull distribution is a probability distribution which generalizes the Weibull distribution introducing two more shapes parameters to best adjust the non-monotonic shape. The parameters of the new probability distribution function are estimated by the maximum likelihood method under progressive type II censored data via expectation maximization algorithm.
Isolation and Characterization of Hydrocarbon-Degrading Bacteria from Wastewaters in Ouagadougou, Burkina Faso  [PDF]
Adama Sawadogo, Otoidobiga C. Harmonie, Joseph B. Sawadogo, Aminata Kaboré, Alfred S. Traoré, Dayéri Dianou
Journal of Environmental Protection (JEP) , 2014, DOI: 10.4236/jep.2014.512115
Abstract: Lubricants are very often found in nature under waste-oil forms and represent for the environment a real danger of pollution due to the difficulty of their biodegradation. The situation is especially worrying in most developing countries in particular those of Sub-Saharan Africa due to the absence of regulation or control. The present work aims to isolate bacterial strains able to degrade hydrocarbons which can later be used in biotechnology for environments depollution. Oil-contaminated wastewater samples were collected in Ouagadougou city (Burkina Faso) and then used as source of bacterial isolation. Appropriate amounts of samples were inoculated to a mineral salt medium (MS) with Total Quartz 9000 oil as sole carbon and energy source and then incubated for enrichment, prior to microbe isolation. Two bacterial strains namely S2 and S7 were isolated from the enrichment cultures. The strains were tested for their ability to degrade other hydrocarbons (i.e. gasoline, diesel oil, brake oil) and for temperature, pH and salt concentration ranges for growth before their biochemical characteristics were defined. Based on their morphological, physiological and biochemical traits, strains S2 and S7 belong to Acinetobacter and Pseudomonas genera, respectively.
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