Efficacy of Randia nilotica methanol extract against Schistosoma mansomi infection in mice
الملخص
Introduction: Schistosomiasis is an important parasitic disease in the tropics. Emergence of praziquantel-resistence strains urged the need for new drugs.
Objective: To scientifically evaluate the effectiveness of a plant (Randia nilotica) used traditionally to treat schistosomiasis.
Methods: Albino mice were experimentally infected with single dose of 150 cercariae of the Sudan strain of Schistosom mansoni. All the cercariae penetrated the shaved tail of the mouse. The mice were treated with single i.p (intraperitoneal) dose of 1 ml of R. nilotica methanol extract (prepared from fruit part of the plant) in concentration of 5000 ppm and double doses through the same route of administration with 1 ml of R. nilotica methanol extract in concentrations of 1000 and 500 ppm.
Results: This resulted in total worm burden reductions at 87% 76% 68% respectively. The reductions in female worm burden were 99%, 97%, and 95% respectively. Oral administration with the same concentrations (single dose of 5000 ppm and double doses of 1000 and 500 ppm) resulted in total and female worm burden reductions. There was obvious reduction in the number of eggs in liver and intestinal tissues of the treated mice and improvement of their health when compared with the control group
Conclusion: We conclude that the methanol extract of R. nilotica is effective against S. mansoni.
Sudan Journal of Medical Science Vol. 1 (2) December 2006: 103-108
المراجع
2. Fallon PG. Doenhoff M J. Drug-resistantschistosomiasis: resistance to Praziquantel andOxamniquine induced in Schistosoma mansoni inmice is drug specific .Am J Trop Med Hyg 1994;51: 83-88.
3. Ismail M. Botros S. Metwally A. et al. Resistanceto Praziquantel: direct evidence from Schistosomamansoni isolated from Egyptian villagers. Am JTrop Med Hyg 1999; 60: 932-935.
4. Ismail M. Metwally A. Farghaly A et al.Characterization of isolate of Schistosomamansoni from Egyptian villagers that tolerate highdoses of Praziquantel. Am J Trop Med Hyg 1996;55: 214-218.
5. Ismail MM. Taha SA. Farghaly AM. Laboratoryinducedresistance to Praziquantel in experimentalschistosomiasis. J Egyptian Society ofPhraseology.1994; 24: 685-695.
6. Geerts S. Gryseels B. Drug resistance in humanhelminthes: current situation and lessons fromlivestock. Clinical Microbiology Reviews. 2000;13: 207-222
7. William S. Sabra A. Ramzy F. Stability andreproductive fitness of Schistosoma mansoniisolates with decreased sensitivity to Praziquntel.International Journal for Parasitology 2001; 31:1093-1100.
8. Danso-Appiah A. De VlasS.J. Interpreting lowPraziquantel cure rates of Schistosoma mansoniinfections in Senegal. Trends in Parasitology.2002;18: 125-129.
9. Cioli D. Chemotherapy of schistosomiasis: anupdate. Parasitology Today 1998; 14: 418-422.
10. Cioli D. Praziquantel: is there real resistance andare there alternatives? Current Opinion inInfectious Diseases 2000; 13: 659-663.
11. Gryseels B. Mbaye A. De Vlas SJ. Are poorresponces to Praziquantel for the treatment ofSchistosoma mansoni infections in Senegal due toresistance? An overview of the evidence. TropMed Internat Health 2001; 6: 864-873.
12. Doenhoff MJ. Kusel JR. Coles G.C. Resistance ofS. mansoni to praziquantel: is there a problem?Trans R Soc Trop. Med. Hyg. 2002; 96: 465-9.
13. Bashir AK. Pharmacognostical studies on theSudanese Medicinal plants Randia nilotoca stapfand Grewia villosa Willd.1980; Ph.D. thesisUniversity of Wales. U.K.
14. Sulaiman MS. Ahmed K. Bashir AK. Effects ofcertain Sudanese plant extracts on egg-hatching,miracidia and cercariae of S .mansoni. Int.J.Crud.Drug Res. 1988; 26:17-21
15. El-KheirYM. and El-Tohami M S. Investigation ofmolluscicidal activity of certain Sudanese plantsused in folk-medicine. J. Trop. Med. Hyg. 1979;82: 237-247.
16. Elshiekh HS. Biological and Chemical Studies onMolluscicidal and Schistosomiasis Compounds.1994. Ph.D. thesis University of Khartoum,Sudan.
17. Magzoub M Magraith BG. Glycolytic activities ofScistosoma mansoni and the mode of action ofantischistosomal drugs (Ambilhar and Astiban).Ann Trop Med Parasitol 1969; 63: 377-391.
18. Katz N. Chaven A. Pellegrino J. A simple devicefor quantative stool thick-smear technique inSchistosomiasis mansoni. Revista do InstitutodeMedicina Tropical de Sao Paulo 1972; 14: 397-400.
19. Cheever AW. Conditions affecting the accuracyof potassium hydroxide digestion techniques forcounting S. mansoni eggs in tissues. Bull. WHO.1968; 39: 328-331.
20. Smithers SR. Terry RJ. The infection oflaboratory hosts with cercariae of S. mansoni andthe recovery of the adult worms. Parasitol. 1965;55: 696-700.
21. Saada M N. Efficacy of Three Sudanese Medicinalplants against adult Schistosoma mansoni incomparison with Praziquantel, 2005. Ph.D. thesis,University of Khartoum, Sudan.