Mohamed Bahnasawy | Damietta University (original) (raw)

Papers by Mohamed Bahnasawy

Egyptian Journal of Aquatic Biology and Fisheries, Apr 1, 2009

easonal variations in the concentrations of four heavy metals; zinc (Zn), copper (Cu), lead (Pb) ... more easonal variations in the concentrations of four heavy metals; zinc (Zn), copper (Cu), lead (Pb) and cadmium (Cd), were determined in gills, skin and muscles of two fish species (Mugil cephalus and Liza ramada) from five locations in Lake Manzala. The average concentrations of the metals in fish tissues exhibited the following order: Zn>Cu>Pb>Cd. The statistical analysis revealed a significant effect of seasons, locations and fish tissues for all metals measured. The highest values of the metals were recorded in hot seasons (summer and spring). Fish samples from location V (Bahr El-Bakar) displayed the highest metal concentrations in their tissues. The highest concentrations of heavy metals were found in gills tissue of both fish species, while the lowest ones were recorded in muscles tissue. The values of the metals detected in the edible fish muscles were within the permissible limits.

The Egyptian Journal of Hospital Medicine, 2013

Introduction: Coronary artery disease (CAD) is a major public health problem both in developed an... more Introduction: Coronary artery disease (CAD) is a major public health problem both in developed and in developing countries. The disease is multifactorial and many predisposing risk factors are responsible for this disease. The present study was performed to determine the prevalence of CAD risk factors among Egyptian women at Damietta governorate. Patients and methods: The study was based on investigation of 113 randomly chosen women who had CAD. Demographic data, risk factors were determined by taking history, physical examination and laboratory tests. Results: The results indicated that the age of the patients ranged from 24 to 82 years with a mean of 55.95±11.04 years. The mean total cholesterol, LDL-C and HDL-C were 233.17, 150.77 and 44.80 respectively. The blood sugar ranged from 75 to 488. Risk factors analysis revealed a significant higher prevalence of obesity and overweight (96.46%), hypertension (83.19%), total cholesterol (78.76%), physical inactivity (70.8%), stress (69.03%), diabetes mellitus (57.52%) and family history of CAD (46.9%). Conclusion: This study provides useful information about the health characteristics of the Egyptian women at Damietta governorate and indicates that the development of health education programs and early chick-up is necessary to prevent the risk factors of this disease.

Acta Zoologica, 1994

ABSTRACT

Scientific Journal for Damietta Faculty of Science, 2020

The major aim of the present study is to evaluate the surface water quality at a part of the Dami... more The major aim of the present study is to evaluate the surface water quality at a part of the Damietta branch, Nile River of Egypt via the measurement of some physicochemical parameters followed by calculation of water quality index (WQI). WQI is considered a simple and effective tool successfully applied for the assessment and investigation of the status and quality of the surface water in any ecosystem. A total of 21 parameters was monitored and measured at ten stations for a year from January to December 2014. Correlation coefficients for physicochemical parameters showed that only turbidity, dissolved oxygen, biochemical oxygen demand, ammonia, and silicate had spatial significant variability. Almost the highest average values appeared at station III. The calculated WQI manifested that the highest value was 66.70% at station IX, while the lowest was 56.44 % at station III. One-way analysis of variance (ANOVA) showed that water quality in the autumn season was higher than the summer months while the spatial significant variability of the WQI confirmed that the St.III. recorded the worst sites, while the sites of the East Bank had; almost the highest average values appeared Generally, most stations found in a medium quality. Damietta branch eastern bank was better than the western one. The mean values of most measured parameters were within the threshold limits in comparison to Egyptian environmental standards regularities (EESR). WQI will be useful mechanism for regular monitoring.

ABSTRACT. An experiment was conducted to evaluate the growth performance of Nile tilapia fed with... more ABSTRACT. An experiment was conducted to evaluate the growth performance of Nile tilapia fed with supplemental feed (25 % crude protein) at 50 % satiation. Juvenile Nile tilapia (average weight 6.4 g) were stocked in an earthen pond at 2.4 fish m-2. The pond was fertilized twice weekly with a mixture of superphosphate and urea fertilizer (68 kg ha-1). The annual fish yield was 6880 kg ha-1. The mean weight of harvested fish ranged from 110 to 250 g. The food conversion ratio (FCR) was 0.82, the average daily weight gain (ADG) was 0.9 g d-1 and the specific growth rate was 1.55 % d-1. This study demonstrated that 50 % satiation feeding is an effective feeding rate for improving the production of Nile tilapia cultured in a fertilized, freshwater earthen pond.

International Journal of Fisheries and Aquatic Studies, 2020

The present study was implemented to evaluate the effect of probiotic on improving water quality,... more The present study was implemented to evaluate the effect of probiotic on improving water quality, growth performance and body composition of Nile tilapia. However, probiotic (EM.1®) was added to rearing water at levels of (0.0 ppm, 50 ppm, 100 ppm, 200 ppm, 300 ppm, 400 ppm and 500 ppm). Water analysis indicated that probiotic application at level of 200 ppm in rearing water significantly improved Dissolved Oxygen (9.02±0.48 mg/l), while it decreased ionized ammonia (0.77±0.03 mg/l) and Un-ionized ammonia (0.04±0.01 mg/l). The maximum fish growth and the best food conversion ratio (1.49±0.07) were obtained at level of 200 ppm. Chemical composition of whole-body fish was significantly affected by probiotic adding to rearing water. The best protein content (13.85±0.21) was obtained at level of 200 ppm. Thus, the present study recommends using probiotic (EM.1®) in rearing water with level of 200 ppm to improve water quality and to enhance fish productivity.

An experiment was conducted to evaluate the growth performance of Nile tilapia fed with supplemen... more An experiment was conducted to evaluate the growth performance of Nile tilapia fed with supplemental feed (25% crude protein) at 50% satiation. Juvenile Nile tilapia (average weight 6.4 g) were stocked in an earthen pond at 2.4 fish m -2 . The pond was fertilized twice weekly with a mixture of superphosphate and urea fertilizer (68 kg ha -1 ). The annual fish yield was 6880 kg ha -1 . The mean weight of harvested fish ranged from 110 to 250 g. The food conversion ratio (FCR) was 0.82, the average daily weight gain (ADG) was 0.9 g d -1 and the specific growth rate was 1.55 % d -1 . This study demonstrated that 50% satiation feeding is an effective feeding rate for improving the production of Nile tilapia cultured in a fertilized, freshwater earthen pond.

Scientific Journal for Damietta Faculty of Science

The present study was carried out to investigate the hematological and immunological effects of a... more The present study was carried out to investigate the hematological and immunological effects of acrylamide on immature male and female rats. The roles of honey and/or nigella sativa oil treatment against these effects of ACR were also investigated. Acrylamide (ACR) is a well-known industrial toxic chemical that produces neurotoxicity, which is characterized by progressive central and peripheral neuronal degeneration. There was significant decrease in the hemoglobin content (p < 0.05) and RBCS counts (p < 0.05) and significant increase in WBCS (p < 0.05) and platelets counts (p < 0.01) due to acrylamide toxicity. At recovery period, there was significant increase in the hemoglobin content and RBCS counts of honey and/or Nigella sativa oil-treated groups as compared to those of the untreated rats but they were still significantly lower than those of the control rats. Moreover, there was significant decrease in the WBCs and platelets counts of honey and/or Nigella sativa oil-treated groups of animals as compared to those of the untreated toxicated rats. In addition, there were significant decreases in the levels of both tumor necrosis factor (TNF-alpha) and Interleukin-17 (IL-17) in this study due to ACR toxicity. At recovery period, there were significant increases in the in the levels of both TNF-alpha and IL-17 of honey and/or Nigella sativa oil-treated groups of animals as compared to those of the untreated toxicated rats. In the current study, the treatments with honey and/or Nigella sativa oil enhance the hematological and immunological parameters of the treated animals that can participate in the neuroprotective effect of Acrylamide on Wistar rats.

المجلة العلمیة لجمعیة امسیا – التربیة عن طریق الفن

Biomedical Research and Therapy

Objective: The aim of the present study is to investigate the effects of Hordeum vulgare aqueous ... more Objective: The aim of the present study is to investigate the effects of Hordeum vulgare aqueous extract (HVE) in a sub-chronic depression rat model. Methods: Thirty male rats were randomly divided into five groups: the first group served as a control group; the second group received i.p. injection of reserpine (Res) (0.5 mg/ kg) for 20 days, the third group received i.p. injection of reserpine plus fluoxetine (Res + Flux) (10 mg/kg p.o.) for 20 days, the fourth group received i.p. injection of Res plus HVE (1,000 mg/kg p.o.), and the fifth group received Res + Flus +HVE. Behavioral tests were measured on the 21st day of the experiment, then rats were decapitated to determine liver function [alanine transaminase, aspartate transaminase, TP, Alb, Glob, A/G), brain monoamines and their metabolites (NE, DA, 5-HT, HVA, DOPAC, 5HIAA), oxidative and nitrositive stress markers (MDA, glutathione, oxidized glutathione, NO, SOD, 8OHdG) and purinergic cell capacity (ATP, ADP, AMP). Results: Ob...

The Egyptian Journal of Hospital Medicine

The present study was carried on forty (40) diagnosed ALL (Acute lymphoblastic leukemia), CML (Ch... more The present study was carried on forty (40) diagnosed ALL (Acute lymphoblastic leukemia), CML (Chronic myeloid leukemia), AML(Acute myeloid leukemia)patients who attended Oncology Centre, Mansoura University. Their ages ranged from 3 to 77 years. They were 27 males and 13 female. Patients were followed up throughout the period of the study. All patients were subjected to the following: Detailed history, clinical examination and Laboratory investigations. Results: CD04 expression was not associated with any of the studied demographic ,clinical or laboratory variables. No statistically significant associations were elicited between CD 04 expression and any of the studied prognostic factors of patients. However ,a significant positive association was detected between patients who responded to chemotherapy and positive CD04L. Conclusion: CD04L is an independent prognostic factor for relapse free survival ,and also an independent prognostic factor for the prediction of good response to chemotherapy ,since CD04L positive patients are more liable to achieve complete remission ,while CD 04 negative ones are more susceptible to death chemotherapeutic resistance.

International Journal of Pharmacology, 2016

Journal of Applied Sciences and Environmental Management, 2010

Assessment of seasonal variation in concentration of the heavy metals-Co, Cr, Cu, Fe, Mn, Ni, Pb ... more Assessment of seasonal variation in concentration of the heavy metals-Co, Cr, Cu, Fe, Mn, Ni, Pb and Zn-in Abattoir dump site soil at Yauri, Nigeria, was undertaking during the two major seasons of Nigeria. This was done to determine the environmental pollution status of the soil at the dump site. Soil samples (0-15cm) collected during the 2007/2008 rainy and dry seasons were treated and digested using microwave acid digestion methods. The heavy metal concentrations were determined with Atomic Absorption spectrophotometer (AAS). The mean levels range of Co,

Aquaculture Research, 1989

Effects of stocking density on water quality and on the growth, survival and food conversion of O... more Effects of stocking density on water quality and on the growth, survival and food conversion of Oreochromis niloiicus (Linnaeus) were evaluated. Fingerlings of tilapia (average weight 40-25 ± 94 g) were stocked in six 3-75-m-' concrete tanks at 16.32 and 42-6/m' and reared for 164 days. A water flow rate of 1 l/min/kg fish biomass was maintained in all the tanks. The growth rate was inversely related to stocking density with mean weights of 337-25 g, 327-Og and 323-5g at the low, medium and high densities respectively. At harvest, standing crop biomass averaged 5-36 kg, 10-44kg and 13-24kg for the three densities. The respective food conversion ratios (FCR) were 1-85, 1-88 and 1-95, while the survival rates were 99-2. 99-6 and 95-9%. However, the survival rate, growth rate and food conversion efficiencies were not significantly different at the three stocking densities. Water quality did not deteriorate in different tanks as the oxygen was continuously replenished and metabolites and waste products removed by the water flowing through the tanks. These data suggest that culture of tilapia at a density of 42-6/m' and production of 13-24 kg/m-' in 164 days with a production of 18-20 kg/m^ in a growing season (April-October) of 210 days is possible using the drainage water in flow-through water systen:is.

Continental Journal of Environmental …, 2012

The levels of some heavy metals (Cu, Zn, Cd, and Pb) were determined in water, plankton, and fish... more The levels of some heavy metals (Cu, Zn, Cd, and Pb) were determined in water, plankton, and fish (Liza aurata) collected from 5 sites in Lake Manzala. Metals in the water and fish exhibited a significant seasonal and regional variation, in which all metals attained their maximum value during summer, while the lowest levels were found during winter. The concentration of different metals in water, plankton, and fish tissues followed the same order: Zn > Cu > Pb > Cd. The mean concentrations of metals in the water were as follow: Cu, 0.055; Zn, 0.311; Cd, 0.020; and Pb, 0.022 mg/L. The Cd level in the water was found to be higher than the permissible limit recommended for drinking water. Metals in plankton were much higher than those of water and fish. Gills of the examined fish contained the highest concentration of all of the measured metals, while muscles retained the lowest. In spite of the contamination of Lake Manzala by heavy metals, the level of the metals in fish muscle (the edible part) did not exceed the recommended permissible limit and the fish is considered safe for human consumption.