Evaluation of "myrrh extract" against schistosoma mansoni: a histological study

This study investigated the effect of myrrh extract on different developmental stages of Schistosoma mansoni. Sixty albino mice were used and divided into three main groups: GI [control group], Gil [infected group] and Gill [infected-treated group]. The last group was further divided into 3 subgroups where the drug was administered in a dose of 500mg/kg body weight for 5 days starting on the 1[st] day PI for IIIA, on the 21[st] day PI for IIIB and on the 45[th] day PI for IIIC. A morphometric study was performed for the mean number and perimeter of granulomas. In Gil, typical bilharzial granulomas were frequently encountered in the portal tracts with numerous eosinophils, collagen fiber deposition and reticular fiber condensation. Hepatocytes revealed vacuolation, nuclear affection and depletion of glycogen. In GIII, granulomas were less frequently observed with apparent decrease of eosinophils. The maximum effect of the drug was observed in SGs IIIB and IIIC as detected by significant decrease in the mean number and size of granulomas, paucity of eosinophils, decreased fibrosis and reticular fibers and the restoration of the glycogen content in the hepatocytes. The present data proved that myrrh has a valuable schistosomicidal effect against different stages of S. mansoni. This chemotherapeutic effect was more evident when the drug was given to infected mice on the 21[st] as well as on the 45[th] day PI

Light microscopic study of the effect of new antischistosmal drug [Myrrh extract] on the liver of mice

The efficacy of purified oleo-resin extract of myrrh derived from Commiphora molmol tree, [known as Mirazid R] was studied against an Egyptian strain of Schistosoma mansoni in mice. Seventy adult male mice were used in this study. They were divided into 4 groups: G.I: consisted of control non- infected non treated mice. G.II: comprised the non infected treated mice and was subdivided into two subgroups, subgroup II-A: included mice which received Myrrh extract dissolved in cremophore EL and subgroup IIB: included mice which were treated with cremophore EL. G.III: consisted of the infected non treated animals and G.IV: included infected mice which were treated with myrrh extract. The drug was given 8 weeks post infection in a dose of 500 mg/ kg body weight/ day for 5 successive days. All animals were sacrificed after 12 weeks from the beginning of the experiment. Liver paraffin sections were prepared and stained with H and E, Masson's Trichrome stain. PAS stain and Wilder's technique. A morphometric study was performed for the mean number and perimeter of the granulomas. Area percentage of the total collagen content around central veins as well as in portal areas was also estimated. The livers of the animals in G.II which received either myrrh extract [subgroup II-A] or cremophore EL [subgroup II-B] showed a more or less normal histological profile when compared to G.I [non infected-non treated group]. G.IV [Infected treated G.] showed complete preservation of the hepatic architecture. Most of the hepatocytes appeared almost normal. The reticular network in the central part of the granulomas as well as in the portal tracts appeared rarefied. The hepatic reticular network was preserved. A significant decrease in the number and size of granulomas with significant reduction in the collagen content deposition in portal tracts and around central veins was detected when compared to G.III [infected non treated mice]. The data of this study proved the efficacy of myrrh as a promising anti-schistosomal drug

Effect of myrrh extract on the liver of normal and bilharzially infected mice, an ultrastructural study

In the present work, the efficacy of purified oloe-resin extract of myrrh derived from Commiphora molmol tree [commercially known as Mirazid] as a new, natural antischistosomal drug was investigated. The effect of myrrh on the ultrastructural profile of the noninfected normal mice liver was also studied. Sixty male mice were used throughout this work and they were divided into three main groups [20 animals each]: Group I [noninfected control animals], group II [infected animals] and group III [infected animals treated with myrrh extract at eight weeks post infection, 500 mg/kg body weight]. The drug was given orally on an empty stomach after overnight fasting for five successive days. All animals were sacrificed after 12 weeks from the beginning of the experiment and small pieces of the liver were excised and prepared for an ultrastructural study. The liver of the noninfected animals, which received myrrh extract [group IA] showed a more or less normal ultrastructural profile. The infected groups showed alterations of the ultrastructure of most of the hepatocytes with extensive intercellular fibrosis with abundant granulomas in the portal tract. In the infected treated group, most of the hepatocytes showed normal organelles with numerous microvilli extending into patent spices of Disse. A marked reduction of granulomas in the portal areas and an amelioration of the intercellular fibrosis were also observed. On the bases of the observed results, it was concluded that myrrh extract has a promising antischistosomal non-hepatotoxic activity