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Vol.5 No.2 – 8 : The curative effect of Cymbopogon citrates volatile oil against chlorambucil drug toxicity

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By: ZakariaTeleb1, KamiliaTaha2, Sobhy Hassab El-Nabi3, Islam El-Garawani3, Gouda T. Dawoud2, Samraa S. El-Shafey3 and Hanaa M. El-Esawy3

1 Department of Biochemistry, National Organization for Drug Control and Research, MHP, Egypt.

2 Department of Phytochemistry, National Organization for Drug Control and Research, MHP, Egypt

3 Department of Zoology, Faculty of Science, Menoufia University, Egypt.

Abstract

Chlorambucil (CLB) is a bifunctional alkylating drug widely used as an anticancer agent and immunosuppressant. CLB mutagenicity, teratogenicity and carcinogenicity are indicated based on their structure and clinical history. This study aims to evaluate the antigenotoxic effect of Cymbopogon citratus essential oil, CC, (75 mg/kg) against CLB (7.5 mg/kg) genotoxicity in rats. GC/MS for essential oil has identified 19 compounds representing approximately 99.7% Geranial was the most abundant (53.5%) followed by Neral (35%) and Myrcene (5.3%).  The lowest was α-Muurolene (0. 1%). The marked damage was observed in total genomic DNA and total protein profile of CLB-intoxicated rat’s spleen tissues. Lymphocytes single strand breaks of treated rats were examined by comet assay after CC had ameliorated these effects in a time dependent manner (5, 10 and 15 days) for spleen and after 48 hours for lymphocytes. In conclusion, this study suggests that Cymbopogon citrates oil possesses antigenotoxic potential in CLB-intoxicated rats. It can constitute natural, new and safe co-therapeutics.

The curative effect of Cymbopogon citrates volatile oil against chlorambucil drug toxicity-converted

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Vol.5 No.1 – 9 : Oxidative stress and DNA damage in Nile Tilapia (Oreochromis niloticus) as biomarkers of aquatic pollution

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By: EL-Hassan Mokhamer, Eman H. Radwan and Moataz Elsaka

Zoologlogy Department, Faculty of science, Damanhour university,Egypt

 (Email: elhassan.gaber@sci.dmu.edu.eg)

Abstract

The main purpose of this study is to evaluate the impact of heavy metals (Pb, Zn, Cu, Fe, and Cd) aquatic pollution of EL-Mahmoudeyia canal on the antioxidant enzymatic activities, GSH content and lipid peroxidation levels (MDA) in Oreochromis. niloticus muscles tissues collected from two areas EL-Mahmoudeyia canal as Polluted area and  Rosetta branch of river Nile as reference area in summer 2018 and winter 2019 as well as DNA damage was assessed in fish gills(erythrocytes) samples by applying comet assay. EL-Mahmoudeyia canal exposed to excessive of industrial effluents which impact the living organisms especially fish. The herein results showed that higher concentrations of heavy metals (Pb, Zn, Cu, Fe, and Cd) were detected in water and fish samples collected from the polluted area in comparison with the reference area, especially in winter.  The accumulation patterns of heavy metals in muscles of O. niloticus, were in the following order: Fe > Zn >Pb> Cu and Cd.The antioxidant enzymatic activities of (SOD, CAT, GPx and GST) and the lipid peroxidation biomarker MDA levels in muscles of O. niloticus collected from the polluted area were found to be significantly increased compared to that of the reference area.Meanwhile, there was a significant decrease in the GSH content levelin muscles of O. niloticus collected from the polluted area compared to that of the reference area. A significant elevation in DNA damage frequencies was observed in fish collected from the polluted areas compared with those from the reference area.These noticeable alterations in the selected antioxidant enzymatic activities in muscles of the O. niloticus go in parallel with the remarkable elevation in the levels of the detected heavy metals in water from EL Mahmoudeyia canal, as a result of pollution in these areas. This study explored the utility of the DNA damage, the altered antioxidant enzymatic activities, GSH content and MDA level as biomarkers of aquatic pollution.

 

Oxidative-stress-and-DNA-damage-in-Nile-Tilapia-Oreochromis-niloticus-as-biomark

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Vol.3 No.3 – 1 : Effect of Sulforaphane and Methotrexate combined treatment on Histone Deacetylase Activity in Solid Ehrlich Carcinoma

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By : Mai M. El-Keey; Mohamad A. El Ghonamy; Tarek M. Ali1; Wafaa M. Ibrahim; Ehab Tousson.

Abstract

Histone acetylation is one of the posttranslational modification that plays a role in the regulation of gene expression, also modulation of acetylation with histone deacetylase inhibitors (HDACi) had been considered a novel strategy for cancer chemoprevention.This study was aimed to investigate the activity of histone deacetylaseenzyme (HDAC) in tumor cell model Solid Ehrlich carcinoma under the effect of the antitumor drug methotrexate in combination with sulforaphane (SFN) which is a natural compound found in cruciferous vegetables. In the present study sulforaphane was extracted from cabbage outer leaves. The HDAC activity significantly increased in tumor bearing mice, non-significantly decreased after treatment with methotrexate and significantly decreased after treatment with methotrexate with oral supplement by sulforaphane. However, The DNA damage decreased significantly in tumor tissue of tumor bearing mice after treatment with methotrexate and increased significantly in tumor tissue of tumor bearing mice treated with oral sulforaphane in combination with methotrexate treatment after carcinogenesis. In conclusion the sulforaphane have antitumor effect via its pro-oxidant activity and affect the HDAC activity via its metabolite’s in an inhibitory manner that inhanced the effect of methotrexate.

Effect of Sulforaphane and Methotrexate combined treatment on Histone Deacetylase Activity in Solid Ehrlich Carcinoma

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