RESUMELa drépanocytose est une maladie génétique qui constitue un problème de santé publique en Côte d'Ivoire. Etant donné les coûts onéreux du traitement, les patients s'orientent vers la médecine traditionnelle avec l'utilisation de plantes, parmi lesquelles Cajanus cajan. L'objectif de ce travail était de réaliser une étude phytochimique et d'évaluer in vitro l'effet antifalcimiant des graines de Cajanus cajan. Cette étude expérimentale s'est effectuée en deux phases : une première consacrée à la caractérisation des graines et l'autre concernait l'étude de l'activité antifalcimiante in vitro de ces graines. L'étude de l'activité antifalcimiante s'est faite sur les prélèvements sanguins de 30 drépanocytaires homozygotes SSFA 2 . Après induction de la falciformation des globules rouges, l'ajout de l'extrait aqueux de la plante a permis d'évaluer l'activité antifalcimiante par la recherche des drépanocytes au microscope optique. Les Characterization and in vitro evaluation of the antisickling effect of the seeds of Cajanus cajan (Fabaceae) on sickle cells in Abidjan -Côte d'Ivoire ABSTRACTSickle cell anemia is a genetic disease that constitutes a public health problem in Côte d'Ivoire. Given the high cost of treatment, patients in Africa turn to traditional medicine with the use of plants, including E. N' DRAMAN-DONOU et al. / Int. J. Biol. Chem. Sci. 9(5): 2300-2308, 2015 2301Cajanus cajan. The objective of this work was to make a phytochemical study and to evaluate in vitro the antisickling effect of seeds of Cajanus cajan. This experimental study was carried out in two phases: the first was devoted to the characterization of the seeds and the other concerned the study of the in vitro antisickling activity of these seeds. The study was done on the blood samples of 30 SSFA 2 homozygote patients with sickle cell anemia. After induction of the sickling of red blood cells, the addition of the aqueous extract of the plant allowed the evaluation of the antisickling activity by the search for sickle cells under an optical microscope. Cajanus cajan seeds contain sterols, polyterpenes, polyphenols, flavonoids, tannins and alkaloids. They are without any acute toxicity. The aqueous extract reduced the rate of sickle cells of about 50% after 30 min of contact. This study made it possible to show that the seeds of Cajanus cajan have antisickling virtues.
An ethnobotanical survey was conducted to record the various plant families, species, and plant parts used to manage sickle cell disease in the Indenié-Djouablin region eastern Côte d’Ivoire. Nine traditional healers aged 36 to 67 years old were selected in six different villages according to their reputation in knowledge of traditional medicine, their availability and their willingness to share information. A total of 26 species of plants belonging to 20 families were reported to have antisickling activity. Eleven (11) different medication recipes were composed from these 26 species of plants ((Afromonum melegueta (Roscoe) K. Schum., Xylopia aethiopica) mainly). The main plant parts used were stem bark (38%) followed by fruit (18%) and seeds (18%). The majority of the main plants recorded (84.61 %) were wild. From the recorded plants, 65.38 % were trees and 23.07 % shrubs. Most remedies (82%) were made up by decoction and were employed orally (54 %) or by enema (32 %). The potential anti-sickling activity of the plant species recorded during this study could be the effect of alkaloids, polyphenols, quinones and terpenoids compounds found during the phytochemical screening of the 26 plants species.
Aims: In traditional medicine, several plant species from Rutaceae’s family have been used to treat sickle cell anemia. However, more studies are needed to corroborate the antisickling activity of Zanthoxylum leprieurii species. The objective of this paper was to evaluate the sickling cell inhibition and radical scavenging activities of hydroethanolic and aqueous extracts of Zanthoxylum leprieurii’s bark, a plant species used in the management of sickle cell anemia in eastern Côte d’Ivoire. Methods: Hydroethanolic and aqueous extracts of the stem bark of Zanthoxylum leprieurii were prepared. Qualitative and quantitative phytochemical tests were carried out. In addition, diphenyl 1, 2 picrylhydrazyl (DPPH) was used to determine the antioxidant potential of these two extracts. The antisickling activity of two extracts was determined by the Emmel method. Results and Discussion: Zanthoxylum leprieurii’s barkextracts have demonstrated antioxidant property. The IC50 value of the hydroethanolic extract (0.308±0.06) was lower than that of the decocted (0.434 ±0.06). At 10 mg/mL, the sickling cell inhibition of DZL was 81% ±2.66 while EZL was 89% ±0.44. The presence of alkaloids, sterols, Polyterpenes and phenolic compounds in both extracts could explain the sickling inhibition activity of these extracts. All the extracts revealed an antioxidant and antisickling activities higher than the standard. Conclusion: The hydroethanolic extract (EZL) demonstrated a higher antisickling activity and exhibited a better free radical scavenging activity. The use of Zanthoxylum leprieurii’s bark in the traditional management of sickle cell anemia is justified.
This study was conducted with the objective of contributing to the valorization of aromatic and medicinal plants of Côte d’Ivoire. The essential oil (EO) of the leaves of two species of Premna, P. angolensis and P. quadrifolia obtained through steam distillation process, were analized through gas chromatography coupled with mass spectroscopy (GC-MS) and their antimicrobial activities was evaluated by agar diffusion method. The yields of EO extracted from the leaves of P. angolensis and P. quadrifolia are respectively 0.10 ± 0.02% and 0.40 ± 0.02%. 99.43% of the total chemical composition of the EO of P. angolensis leaves, are composed mainly of hydrocarbon sesquiterpenes (71.90%) followed by oxygenates (14.16%) and monoterpenes (13.22%). The main compounds found are β-caryophyllene (33.07%) and Humulene (10.78%). The EO of P. quadrifofia leaves, 99.59% of the composition was identified. It contains hydrocarbon sesquiterpenes (89.15%), followed by oxygenates compounds (8.61%) and monoterpenes (1.83%). The major compounds are αbulnesene (23.33%), germacrene D (18.83%) and caryophyllene (18.06%). The antimicrobial tests have shown that EO of P. quadrifolia leaves has no activites on studied strains and P. angolensis oil has a mild activity on Staphylococcus epidermidis and Klebsielle pneumoneae and a weak sensibility on Staphylococcus aureus CIP 4.83 and Candida albicans ATCC 10231. This study highlights chemical composition of the EO from P. angolensis and P. quadrifolia leaves. It shows more similarities of the chemical compositions of these two species of Premna and the interesting antimicrobial activity potential of P. angolensis EO
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