Ayat Taha
@faculty of science, ain shams university
Zoology Department, Faculty of Science, Ain Shams University
Lecturer of Zoology at Faculty of Science, Ain Shams University
RESEARCH, TEACHING, or OTHER INTERESTS
Animal Science and Zoology
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Shaymaa A. Gouda et al.
Egypts Presidential Specialized Council for Education and Scientific Research
Ayat Taha et al.
Egypts Presidential Specialized Council for Education and Scientific Research
Biosorption using dead microbial biomass represents one of the most innovative, economically feasible, and environmentally safe tools for removing heavy metals
Shaymaa A. Gouda and Ayat Taha
Egypts Presidential Specialized Council for Education and Scientific Research
Shrook Omar, Hala El-Tantawi, Sohail Soliman, and Ayat Taha
Informa UK Limited
ABSTRACT The purpose of this research was to determine whether the synthetic estrogen quinestrol has antifertility effects on male and female Nile rats (Arvicanthis niloticus). Both male and female rats were orally administered quinestrol dissolved in castor oil at a dosage of 1 mg/kg for seven days. In contrast, male and female control rats were given castor oil alone. The use of this dosage of quinestrol resulted in a decrease in the weight of reproductive organs in both sexes, as well as a decrease in sperm count and motility and an increase in the percentage of abnormal sperm. Various histopathological alterations were observed in the testicular, epididymal, and ovarian tissues. Significant reductions in immunohistochemical markers such as androgen receptor protein (AR) and Wilm’s tumor nuclear protein 1 (Wt-1) were observed in treated male rats. These results indicate that quinestrol induces infertility in both males and females of the Nile rats. Therefore, it is recommended for use in integrated pest management campaigns targeting these serious vertebrate pests.
Ayat Taha et al.
Egypts Presidential Specialized Council for Education and Scientific Research
Ayat Taha and Shaymaa A. Gouda
Journal of Experimental Biology and Agricultural Sciences
Rodents cause significant damage to many crops, spread diseases, and pose a severe risk to public health. Several synthetic contraceptive agents are available for controlling rodents; however, their use is associated with toxic effects on non-target organisms. Penicillium oxalicum has several medical properties, but no reports were available on fertility. This study aimed to assess the antifertility potential of n-butanol and ethyl acetate extracts of P. oxalicum in adult male albino rats as biological control agents by lowering the population size of rodent pests. Rats were assigned into three groups (n = 36). The first control group (GI) was injected intraperitoneally with 0.5% dimethyl sulfoxide (DMSO). The second (GII) and third (GIII) groups were injected with a single dose of 200 mg/kg body weight (b.wt.) of n-butanol and ethyl acetate extracts of P. oxalicum intraperitoneally, respectively, after dissolving in 0.5% DMSO. Further, P. oxalicum was identified morphologically and molecularly and then submitted with accession number OM282858 to the National Center for Biotechnology Information (NCBI) GenBank. The antifertility potential of P. oxalicum was evaluated after 24 h (the injection period), 96 h, and 168 h (the recovery periods) of treatments. The effects of the treatments on organ weight, testicular histology, histomorphometry measurements, and sperm characteristics were assessed. Both P. oxalicum extracts caused changes in reproductive organ weights, testicular histology, histomorphometry measurements, and spermatogenic arrest accompanied by a significant decrease in the count of epididymal sperm and its motility and an increase in the percentage of sperm abnormalities during the injection and recovery periods. Thus, the results suggest that both P. oxalicum extract treatments cause suppression of fertility in adult male rats. Therefore, these outcomes are essential for public health, farming establishments, and vertebrate pest control managers.
Ayat Taha
Egypts Presidential Specialized Council for Education and Scientific Research
. Although profenofos is the most commonly used organophosphate in the world, and its residual amounts spread into the environment via air, soil, and water, limited information was found on the toxic effect of this insecticide on birds. Previous toxicological studies on profenofos mainly concentrated on rodents and few studies focused merely on broiler birds. Therefore, this study aimed to assess the toxic effects of profenofos on white egret, Egretta alba . White egrets are water birds (Ciconiiformes: Ardeidae) widely spread in all habitats, viz. wetland, fresh and salt habitats. They feed mainly on fish, frogs, small mammals, reptiles, crustaceans and insects. The aggregation sites of this bird are fish ponds, rivers, marshes and channels. In the present study, the median lethal dose (LD 50 ) was determined. of liver biomarkers confirmed the hepatopathological finding under the toxic effect of profenofos. birds showed several alterations in hepatic tissue, with congested blood vessels and an expansion of the hepatic sinusoids, appearing nucleated erythrocytes. In the the portal area of the treated bird’s aggregation of mononuclear inflammatory cell and the presence focal accumulation of mononuclear inflammatory cells. be
Marwa El-Naggar et al.
Egypts Presidential Specialized Council for Education and Scientific Research
Fish aquaculture is considered an important agricultural activity capable of ending nutritional deficiencies and contributing to poverty reduction (Kaleem & Sabi, 2021). During the past couple of decades, a remarkable and enormous progression in aquaculture has outpaced capture fisheries. While, in the upcoming years, it is predicted to serve as a principal source of aquatic animal requirements (Maclean, 2003 and Ahmed et al., 2020). Thus, fish demand continues to grow throughout the world moving towards intensive aquaculture systems, especially in the developing countries, where fish are important source of the animal protein and the artificial feeding, where fish form the major component (Maclean, 2003 and Abdel-Ghany & Salem, 2020). Recently, aquaculture has been ARTICLE INFO ABSTRACT Article History: Received: Dec. 25, 2021 Accepted: Jan.3, 2022 Online: Jan. 10, 2022 _______________
Ayat Taha and Sohail Soliman
Egypts Presidential Specialized Council for Education and Scientific Research
YI Mahmoud, A Taha, and S Soliman
Informa UK Limited
Abstract We evaluated the sterilizing effect of 3-monochloropropane-1, 2-diol (3-MCPD) in male Egyptian fruit bats (Rousettus aegyptiacus). We used three groups. One was treated with 70 mg/kg 3-MCPD for 4 days. The second group was treated with 3-MCPD as a bait formulation (known concentration of 3-MCPD mixed with a known amount of food). The third group was untreated controls. We compared the weights of the reproductive organs, histology of the testes, occurrence of spermatogenesis, and the count, motility and abnormalities of epididymal sperm of treated males with those of the untreated control group. 3-MCPD caused significantly decreased weights of reproductive organs, several testicular histological alterations and spermatogenic arrest accompanied by significant decreases in sperm count and motility, and significantly increased number of abnormal sperm. 3-MCPD bait was readily accepted by the animals. 3-MCPD, even in low doses and after limited exposure, disrupted spermatogenesis in males of the Egyptian fruit bat. Our findings have potential value for public health and agricultural authorities, and for vertebrate pest managers. 3-MCPD may have application for control of this pest.