scholarly journals In Vitro/ Ex Vivo Antiplasmodial Activity and Phytochemical Screening of Crude Extracts Entandrophragma angolense (Welw.) C. DC., Griffonia simplicifolia (Vahl ex DC.) Baill .et Uapaca guineensis Müll. Arg. three Plants of Ivorian Pharmacopeia in the Treatment of Malaria

Author(s):  
M.R. Offoumou ◽  
G.R. Kipre ◽  
D.S. Kigbafori ◽  
D. Camara ◽  
A.J. Djaman ◽  
...  
2009 ◽  
Vol 6 (4) ◽  
pp. 453-456 ◽  
Author(s):  
Mohammed A. Alshawsh ◽  
Ramzi A. Mothana ◽  
Hassan A. Al-shamahy ◽  
Salah F. Alsllami ◽  
Ulrike Lindequist

Developing countries, where malaria is one of the most prevalent diseases, still rely on traditional medicine as a source for the treatment of this disease. In the present study, six selected plants (Acalypha fruticosa,Azadirachta indica,Cissus rotundifolia,Echium rauwalfii,Dendrosicyos socotranaandBoswellia elongata) commonly used in Yemen by traditional healers for the treatment of malaria as well as other diseases, were collected from different localities of Yemen, dried and extracted with methanol and water successfully. The antiplasmodial activity of the extracts was evaluated against fresh clinical isolates ofPlasmodium falciparum. The selectivity parameters to evaluate the efficacy of these medicinal plants were measured byin vitromicro test (Mark III) according to World Health Organization (WHO) 1996 & WHO 2001 protocols of antimalarial drug tests. Among the investigated 12 extracts, three were found to have significant antiplasmodial activity with IC50values less than 4 µg/ml, namely the water extracts ofA. fruticosa,A. indicaandD. socotrana. Six extracts showed moderate activity with IC50values ranging from 10 to 30 µg/ml and three appeared to be inactive with IC50values more than 30 µg/ml. In addition, preliminary phytochemical screening of the methanolic and aqueous extracts indicated the presence of saponins, tannins, flavonoids, terpenoids, polysaccharides and peptides.


Author(s):  
Aisha Abdulrazak ◽  

The search for antimalarial compounds has been necessitated by the resistance of Plasmodium falciparum to almost all antimalarial drugs. The aim of this research was to determine in-vitro antimalarial activity of extracts of some indigenous plants species in Kebbi State. Plant extraction was carried-out by maceration using ethanol and water as solvent. The antiplasmodial activity of the extracts was evaluated against fresh clinical isolates of P. falciparum using WHO method of in-vitro micro test. Phytochemical screening was also carried out on the extract to deduce the active chemicals present in the plant extract. All plant extracts demonstrate dose dependent antimicrobial activities with IC50 Less than 50%. However highest growth inhibition of the P. falciparum was demonstrated by aqueous and ethanol extract of A. indica with IC50 7.4µg/ml and 8.6µg/ml respectively followed by ethanol and aqueous extract of C. occidentalis with IC50 15.3µg/ml and 18.0µg/ml respectively. Least antimalarial activity was demonstrated by aqueous extract of M. oleifera with IC50 33.5µg/ml while ethanolic extract of M. oleifera demonstrated IC50 of 20.50µg/ml. M. indica ethanolic and aqueous extract also demonstrated moderate antimalarial activity with IC50 18.8µg/ml and 24.5µg/ml. The phytochemical screening of medicinal plants showed the presence of tannins, saponins, alkaloids, flavonoid, phenol and cardiac glycosides in the extracts, which may be responsible for the antiplasmodial activity. This result justifies the traditional use of the plant in malaria treatment and further research is suggested to identify and characterize the active principles from the plants. Keywords: Antimalaria, Invitro, Medicinal Plants, Malaria, Kebbi


2011 ◽  
Vol 5 (3) ◽  
pp. 312-320 ◽  
Author(s):  
D.P. Saxena ◽  
S.K. Shukla ◽  
K. Kumar ◽  
R. Saxena ◽  
S. Saxena ◽  
...  

2011 ◽  
Vol 4 (2) ◽  
pp. 129-132 ◽  
Author(s):  
Koffi Koudouvo ◽  
Simplice D. Karou ◽  
Denise P. Ilboudo ◽  
Kouami Kokou ◽  
Kodjo Essien ◽  
...  

Author(s):  
Hossein Mahmoudvand ◽  
Amal Khudair Khalaf ◽  
Mania Beyranvand

Background:: Hydatidosis is one of the most dangerous zoonosis diseases in the world caused by the larval stage of the broad-worm or Echinococcus granulosus parasite. Today, cysts' rupture or content leakage during surgery and in-volvement of organs adjacent to the organ involved, and consequently secondary cysts, are the major concern for hydatid cyst surgeons. Therefore, using scolicidal substances such as hypertonic saline 20%, silver nitrate and formalin has been considered to reduce the risk of protoscoleces spread and recurrence of disease in recent years. The current work designed to assess the antiparasitic effects of Capparis spinose L. extract against hydatid cyst protoscoleces. Methods:: Collected protoscoleces from liver fertile hydatid cysts of infected sheep were exposed to the different concentra-tions of the essential oil (150, 300, 600 mg/mL) for 5-60 min in vitro and ex vivo. Then by using the eosin exclusion assay the viability of protoscoleces was studied. The primary phytochemical analysis of the C. spinosa extract was done to assess the presence of tannins, alkaloids, saponins, flavonoids, terpenoids and glycosides. Results:: C. spinosa extract had a powerful protoscolicidal activity in vitro so that at the 300 and 600 mg/ml entirely elimi-nates the parasite after 10 and 5 minutes; whereas at lower doses demonstrated weak protoscolicidal activity. Ex vivo assay, no similar effect with in vitro was observed, so that requiring a more time to show a potent protoscolicidal activity. C. spi-nosa extract at the concentrations of 300 and 600 mg/mL after exposure time of 20 and 12 min, killed 100% of protoscole-ces within the hydatid cyst, respectively. The findings of primary phytochemical screening of the C. spinosa extract demon-strated the existance of flavonoids, tannins, terpenoids, glycosides and alkaloids in this plant. Conclusion:: The obtained results in vitro and ex vivo exhibited that potent protoscolicidal effects of C. spinosa extract particu-larly at the concentrations of 600 and 300 mg/ml which entirely eliminates the parasite after 5-20 min exposure. However, more and supplementary works are required to verify these findings through assessing in animal models and clinical subjects.


Heliyon ◽  
2020 ◽  
Vol 6 (9) ◽  
pp. e04395
Author(s):  
Irene Rumbidzai Mazhangara ◽  
Emrobowansan Monday Idamokoro ◽  
Eliton Chivandi ◽  
Anthony Jide Afolayan

2011 ◽  
Vol 108 (6) ◽  
pp. 1383-1390 ◽  
Author(s):  
Denis Zofou ◽  
Archile Bernabe Ouambo Kengne ◽  
Mathieu Tene ◽  
Moses N. Ngemenya ◽  
Pierre Tane ◽  
...  

2020 ◽  
Vol 8 (3) ◽  
pp. 130-138
Author(s):  
Brice Kouakou Bla ◽  
Oléfongo Dagnogo ◽  
Rolland Gueyraud Kipré ◽  
Opportune Gogo Ballé ◽  
Jonhson David Trébissou ◽  
...  

Information collected from nine (09) traditional healers in the Moronou village in the Department of Toumodi revealed that Anthocleista djanlonensis is regularly used by the population for primary health care in the processing of malaria. Evaluation of the In vitro antiplasmodial activity showed that the aqueous extracts inhibit growth of clinical isolates and chloroquinoresistant strains (K1) with IC50 of 8.29 µg/mL and 10.23 µg/mL while the ethanolic extracts had IC50 of 37.65 µg/mL and 46.07 µg/mL on the same strains respectively. Results of the In vitro antimalarial bioassay showed that aqueous extracts have promising antiplasmodial effects on clinical isolates and on Plasmodium falciparum multidrug resistant K1 strain (3 µg/mL <IC50 <15 µg/mL). Phytochemical screening revealed that the extracts contain mainly alkaloids, polyphenols, polyterpenes and flavonoids


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