Abstract Background Biomarkers have become a valuable tool in environmental assessment, since they contribute to predicting contaminants monitoring programmes. This study aimed investigate the toxicity of heavy metal pollution Lake Qarun using multibiomarker approach (morphological, oxidative stress, genotoxicity, stress proteins) Solea aegyptiaca fish. During winter and summer seasons, water fish samples were collected from different locations along Qarun; western northern sectors away any...

Urbanization and industrialization have led to heavy metals in aquatic environments. These are toxic, nondegradable, persistent. Lead (Pb) is an immunotoxicant that can adversely affect animal health, even at low levels. Chitosan (CHI) eco-friendly compound with exceptional antibacterial immunostimulant characteristics. This study investigated the effect of dietary CHI on antioxidant defense system innate immune responses tilapia (Oreochromis niloticus) against cytotoxic prolonged Pb...

The Nile River islands are recognized as the most productive lands in Egypt. Although, these vulnerable to several natural and man-made crises. present study was aimed evaluate consequences of different anthropogenic activities on heavy metals load histological alterations O. niloticus S. galilaeus collected from four along Great Cairo sector (Egypt), possible health risks for human consumers. Metals were accumulated both fish muscles following order: Fe > Zn Cu Mn Pb. recorded higher metal...

Fish is a good indicator for monitoring of heavy metals risks. The present study was conducted to evaluate the effects Chlorella vulgaris and Spirulina platensis dietary supplementation on Oreochromis niloticus growth under normal conditions. Additionally, evaluation their performance, growth-related genes expression antioxidant enzymes O. exposed mixture metals. results showed that highest performance recorded in groups supplemented with 10 15% S. compared C. control groups. ghrelin, leptin...

This work studied how pollution impacts the ecosystem of Lake Manzala by determination physicochemical parameters, studying biodiversity aquatic plants and macroinvertebrates, determining bioaccumulation Pb, Cu, Cd & Zn in some major organisms, Biomphalaria alexandrina Melanoides tuberculata snails Oreochromis niloticus fish. The more near to Mediterranean Sea industrial area, Port-Said Damietta sites showed higher dissolved oxygen conductivity than Dakahlia sites. Distribution percentage...

This study focused on two areas (Abu-Zaabal and El-Tal El-Kabir) of the Ismailia canal. The samples represented effect factories' effluent discharge onto Physical characteristics (water temperature pH) chemical (total hardness, dissolved oxygen, biological oxygen demand demand) were measured to identify water quality in These measurements showed slight variations between stations. Additionally, histological histochemical analyses liver Bagrus bayad fish done. Histological studies more severe...

This work studied how pollution impacts the ecosystem of Lake Manzala by determination physicochemical parameters, studying biodiversity aquatic plants and macroinvertebrates, determining bioaccumulation Pb, Cu, Cd & Zn in some major organisms, Biomphalaria alexandrina Melanoides tuberculata snails Oreochromis niloticus fish. The more near to Mediterranean Sea industrial area, Port-Said Damietta sites showed higher dissolved oxygen conductivity than Dakahlia sites. Distribution percentage...

The present study was conducted to investigate the distribution of selected metals (Fe, Zn, Cd, Pb, and Cu) in tissues Nile Tilapia (Oreochromis niloticus) grown along El- Khadrawia drain – Mubark industrial Zone. analyzed included muscle liver. Results showed metal concentrations water followed a richness of: Fe> Zn> Cu> Pb >Cd mg/l (p < 0.05) while Cu > Zn Cd mg/Kg dry wt. muscles liver winter season. Metal levels follow level: Zn>Fe>Cu> Pb>Cd 0.05), they Fe Cu>Pb>Cd summer presence heavy...

In the present study, histological structures of liver, intestine, stomach and ovary Lates niloticus from Lake Nasser (Kalabsha station) were studied during spring season, 2013.Several histopathological changes observed in fish.In vacuolar degeneration, focal areas necrosis, destruction hepatoportal blood vessels haemorrhage between hepatocytes observed.Besides, intravascular haemolysis dilation congestion noticed sinusoids.The intestine included fused villi, outer membrane villi broken,...

Physiological, hematological and biochemical parameters have been used as biomarkers for water quality in snail samples collected from Lake Manzala. The results showed significant increase AST, ALT, ALP planorbis physa Dakahlya site Most of snails are Port-Said sites urea. On the other hand, alteration creatinine values different lake was recorded. Significant total protein level bilirubin obtained all samples. decrease hemocytes count. oxidative enzymes (CAT, GGT GST) recorded their...

Background: Oral ulcers are generally painful lesions that related to various conditions developing within the oral cavity. The main aim of this study is determining prevalence ulcer among Sample Patients in Aden City, Yemen. Methodology: This cross-sectional was carried out 11-65 years old patients. data collected using convenience sampling technique and 841 patients were surveyed, from dental at University Science Technology other public health centers June 2021 July 2022. a self-reported...

Fish productivity has been affected by a progressive increase of salinity and pollution in Lake Qarun. So. this work aimed to investigate the histology ultrastructure gills Tilapia nilotica clarify possible effect water quality on fish gills. The most observed changes include occurrence prominent large number chloride mucous cells confined gill filament, hyperplasia primary lamellar epithelium which leads obliteration some interJamellar spaces between adjacent secondary lamellae, odema...