Search Results - "Osman, Alaa G. M."

Antioxidants and molecular damage in Nile Tilapia (Oreochromis niloticus) after exposure to microplastics by Hamed, Mohamed, Soliman, Hamdy A. M., Osman, Alaa G. M., Sayed, Alaa El-Din H.

“…Recently, research on the biological effects of microplastics (MPs) has grown exponentially. However, effects of MPs on freshwater fishes and the mechanisms of…”
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Screening of multiple hormonal activities in water and sediment from the river Nile, Egypt, using in vitro bioassay and gonadal histology by Osman, Alaa G. M., AbouelFadl, Khaled Y., Krüger, Angela, Kloas, Werner

“…In Egypt, until yet no records are available regarding possible multiple hormonal activities in the aquatic systems and especially in the river Nile. In this…”
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Occurrence and distribution of meso- and macroplastics in the water, sediment, and fauna of the Nile River, Egypt by Hassan, Yasmine A. M., Badrey, Ahmed E. A., Osman, Alaa G. M., Mahdy, Aldoushy

“…The present study described the most recent findings concerning the abundance and distribution of plastic in water, sediment, and fauna in the Nile River of…”
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Lead induced malformations in embryos of the African catfish Clarias gariepinus (Burchell, 1822) by Osman, Alaa G. M., Wuertz, Sven, Mekkawy, Imam A., Exner, Hans-Jürgen, Kirschbaum, Frank

“…The effect of lead exposure (100, 300, and 500 μg/L lead nitrate) on embryos of the African catfish Clarias gariepinus were examined by gross morphology and…”
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Microplastic distribution, abundance, and composition in the sediments, water, and fishes of the Red and Mediterranean seas, Egypt by Sayed, Alaa El-Din H., Hamed, Mohamed, Badrey, Ahmed E.A., Ismail, Rania F., Osman, Yassein A.A., Osman, Alaa G.M., Soliman, Hamdy A.M.

“…This study records the extent of microplastics (MPs) in the surface water, sediments, and fishes of the Mediterranean and Red seas in Egypt. In sediment and…”
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Microplastics-Induced Eryptosis and Poikilocytosis in Early-Juvenile Nile Tilapia (Oreochromis niloticus) by Hamed, Mohamed, Osman, Alaa G. M., Badrey, Ahmed E. A., Soliman, Hamdy A. M., Sayed, Alaa El-Din H.

“…This study aims to assess the impact of microplastics (MPs) on erythrocytes using eryptosis (apoptosis) and an erythron profile (poikilocytosis and nuclear…”
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Effects of lead nitrate on the activity of metabolic enzymes during early developmental stages of the African catfish, Clarias gariepinus (Burchell, 1822) by Osman, Alaa G. M, Mekkawy, Imam A, Verreth, Johan, Kirschbaum, Frank

“…Glucose-6-phosphate dehydrogenase (G6PDH), lactate dehydrogenase (LDH) and pyruvate kinase (PK) are key metabolic enzymes. G6PDH has been used as a biomarker…”
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In situ evaluation of the genotoxic potential of the river Nile: II. Detection of DNA strand-breakage and apoptosis in Oreochromis niloticus niloticus (Linnaeus, 1758) and Clarias gariepinus (Burchell, 1822) by Osman, Alaa G.M., Abuel-Fadl, Khaled Y., Kloas, Werner

“…This work is part of a wider eco-toxicological study proposed to evaluate the biological impact of contaminants along the whole course of the river Nile,…”
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Assessment the effect of exposure to microplastics in Nile Tilapia (Oreochromis niloticus) early juvenile: I. blood biomarkers by Hamed, Mohamed, Soliman, Hamdy A.M., Osman, Alaa G.M., Sayed, Alaa El-Din H.

“…There is a scarcity of knowledge about the impacts of microplastics (MPs) on the early juvenile stage of freshwater fish. The current study aims to inspect the…”
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Microplastics induced histopathological lesions in some tissues of tilapia (Oreochromis niloticus) early juveniles by Hamed, Mohamed, Soliman, Hamdy A.M., Badrey, Ahmed E.A., Osman, Alaa G.M.

“…•Histopathological alterations were detected in microplastics exposed groups.•The liver tissue exhibited vacuoles, degeneration, and severe deformation of…”
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Oxidative stress, antioxidant defense responses, and histopathology: Biomarkers for monitoring exposure to pyrogallol in Clarias gariepinus by Hamed, Mohamed, Soliman, Hamdy A.M., Said, Rashad E.M., Martyniuk, Christopher J., Osman, Alaa G.M., Sayed, Alaa El-Din H.

“…Pyrogallol promotes free radicals leading to oxidative stress and toxicity. There are however a lack of studies on oxidative stress and the antioxidant system…”
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Reproductive and endocrine-disrupting toxicity of pyrogallol in catfish (Clariasgariepinus) by Hamed, Mohamed, Said, Rashad E.M., Martyniuk, Christopher J., Soliman, Hamdy A.M., Sayed, Alaa El-Din H., Osman, Alaa G.M.

“…Endocrine disruptors are synthetic or natural chemicals that can agonize/antagonize hormone receptors or can interfere with the production and secretion of…”
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Modulatory effect of lycopene against carbofuran toxicity in African catfish, Clarias gariepinus by Hamed, Heba S., Osman, Alaa G.M.

“…In the current study, African catfish, Clarias gariepinus , was exposed to a sublethal concentration of carbofuran (CF) to investigate its negative effects on…”
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Monitoring of DNA breakage in embryonic stages of the African catfish Clarias gariepinus (Burchell, 1822) after exposure to lead nitrate using alkaline comet assay by Osman, Alaa G. M., Mekkawy, Imam A., Verreth, Johan, Wuertz, Sven, Kloas, Werner, Kirschbaum, Frank

“…Increasing lead contamination in Egyptian ecosystems and high lead concentrations in food items have raised concern for human health and stimulated studies on…”
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Exposure to pyrogallol impacts the hemato-biochemical endpoints in catfish (Clarias gariepinus) by Hamed, Mohamed, Martyniuk, Christopher J., Said, Rashad E.M., Soliman, Hamdy A.M., Badrey, Ahmed E.A., Hassan, Elhagag A., Abdelhamid, Hani N., Osman, Alaa G.M., Sayed, Alaa El-Din H.

“…Pyrogallol is widely used in several industrial applications and can subsequently contaminate aquatic ecosystems. Here, we report for the first time the…”
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Neurotoxic and cardiotoxic effects of pyrogallol on catfish (Clarias gariepinus) by Hamed, Mohamed, Martyniuk, Christopher J., Soliman, Hamdy A.M., Osman, Alaa G.M., Said, Rashad E.M.

“…Pyrogallol, a botanical hydrolysable tannin, has diverse medical and industrial applications. Its impact on aquatic ecosystems and fish health has been…”
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In situ evaluation of the genotoxic potential of the river Nile: I. Micronucleus and nuclear lesion tests of erythrocytes of Oreochromis niloticus niloticus (Linnaeus, 1758) and Clarias gariepinus (Burchell, 1822) by Osman, Alaa G.M., Abd El Reheem, Abd-El-Baset M., Moustafa, Mohsen A., Mahmoud, Usama M., Abuel-Fadl, Khaled Y., Kloas, Werner

“…This study aimed to investigate the genotoxic potential of chemicals present along the course of the river Nile using frequencies of micronuclei (MN) and…”
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Mitochondrial genetic markers for authentication of major Red Sea grouper species (Perciformes: Serranidae) in Egypt: A tool for enhancing fisheries management and species conservation by Galal-Khallaf, Asmaa, Osman, Alaa G.M., El-Ganainy, Azza, Farrag, Mahmoud M., Mohammed-AbdAllah, Ezzat, Moustafa, Mohsen A., Mohammed-Geba, Khaled

“…Groupers are coral fish species of prime ecological and economic significance. The interactions among them and other coral reefs organisms aid the healthiness…”
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DNA barcoding for different egyptian and qatari common snappers reveals unexpected cryptic lineages in the blackspot snapper Lutjanus ehrenbergii by Galal-Khallaf, Asmaa, Elberri, Aya Ibrahim, Hasieb, Hamdy E., Said, Rashad E. M., Mohammed-AbdAllah, Ezzat, Osman, Alaa G. M., Mohammed-Geba, Khaled

“…Snappers (Lutjaniformes, Lutjanidae) are among the commonest world fish families. They play a vital ecological role as components of coral reef-associated…”
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Use of hematological parameters to assess the efficiency of quince ( Cydonia oblonga Miller) leaf extract in alleviation of the effect of ultraviolet – A radiation on African catfish Clarias gariepinus (Burchell, 1822) by Osman, Alaa G.M., Koutb, Mostafa, Sayed, Alaa El-Din H.

“…The present study aimed to elucidate the negative impacts of UVA on some biochemical and hematological variables of the economically important African catfish,…”
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