scholarly journals Study on the Distribution of Heavy Metals in Different Tissues of Fishes from River Benue in Vinikilang, Adamawa State, Nigeria

2012 ◽  
Vol 2 (4) ◽  
pp. 311-333 ◽  
Author(s):  
J. Akan
2020 ◽  
Vol 1 (1) ◽  
pp. 62-77
Author(s):  
Shahenaz M. Abd-Ellah ◽  
◽  
Soheir El-Sherif ◽  
Rehab El-Morshedy ◽  
◽  
...  

The edible mussel Lithophaga lithophaga is considered as one of the most important human food sources in Alexandria, Mediterranean Sea. The present study is designed to determine the seasonal bioaccumulation levels of Cd, Co and Pb in the whole soft tissues as well as different tissues of Lithophaga lithophaga. Results revealed that the seasonal bioaccumulation levels of Cd, Co and Pb in date mussel were below the permissible limits or other reported values from other regions of the Mediterranean. On the other hand, the order of metals accumulation level in different tissues was as follows: digestive gland>remaining soft tissues>gonads. The present study confirmed the role of digestive gland as a concentration center for heavy metals. Moreover, total protein content and stress protein responses of the whole soft tissues were evaluated. The total protein content was arranged in the following order: summer>autumn>spring>winter. Five novel stress proteins appeared in summer. The histological and ultrastructural studies of the digestive gland of Lithophaga lithophaga collected in summer and spring showed marked histopathological alternations.


2013 ◽  
Vol 16 (1) ◽  
pp. 81-87 ◽  
Author(s):  
Aleya Begum ◽  
Sabrina Sehrin

Heavy metal pollution was reported in commercially valuable and edible pigeon (Columba livia, Gmelin 1789) of Bangladesh. The concentrations of As, Pb, Cd, Cr, Zn, and Cu were investigated in the muscle, intestine, kidney, gizzard and liver. For this 60 C. livia were selected from five locations to assess the degree of pollution by heavy metals in pigeon. Significant differences in heavy metal concentrations were observed among different tissues, but not among the locations. The ranges of the measured concentrations (?g/g dry weight) in the tissues of C. livia were as follows: arsenic: (0.01–0.04), (0.02–0.04), (0.02–0.08), (0.02–0.04) and (0.03–0.07); lead: (0.21–0.56), (0.07–1.64), (0.62–1.97), (0.41–0.79) and (1.47–5.75); cadmium: (0.01–-0.05), (0.13–0.97), (0.53–1.85), (0.32– 0.78) and (0.22–2.41); chromium: (0.25–1.93), (1.18–5.90), (1.59–4.40), (1.15–1.65) and (1.38–8.36); zinc: (73.22–256.56), (95.62–130.75), (19.87–67.18), (108.99–124.77) and (159.80–280.76); copper: (3.44–7.64), (5.30–17.50), (8.72–16.55), (1.19–34.42) and (26.09–43.60) in the muscle, intestine, kidney, gizzard, and liver, respectively. This research showed that the liver appeared to be the main storage site of heavy metals, while the muscle had the lowest levels of the analyzed metals. The concentrations of metal in the muscles were not found to exceed the acceptable level for human consumption. DOI: http://dx.doi.org/10.3329/bpj.v16i1.14499 Bangladesh Pharmaceutical Journal 16(1): 81-87, 2013


Author(s):  
Quratulan Ahmed ◽  
Semra Benzer ◽  
Farzana Yousuf

In this study, Nickel (Ni), Lead (Pb), Cadmium (Cd) and Chromium (Cr) concentrations were determined in muscle, liver, kidney, gills and gonads of Indian mackerel (Rastrelliger kanagurta) collected from Karachi fish Harbour, Karachi coast, Pakistan, during August 2006 and December 2011. Generally, the fish showed the highest level of Ni (2.26+0.89 µg g-1), Pb (1.45+0.40 µg g-1), Cd (2.07+0.75 µg g-1) and Cr (1.52+0.69 µg g-1) in the liver. The studied metals were the most abundant in the liver than the other organs of the fish. The amount of metal accumulation in fish tissues was evaluated in terms of human health. It was seen that bioaccumulations in muscle tissues of the fish caught from Karachi coast of Pakistan did not exceed the limit values.


2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Qingzhao Li ◽  
Huibin Liu ◽  
Mohamed Alattar ◽  
Shoufang Jiang ◽  
Jing Han ◽  
...  

2011 ◽  
Vol 8 (1) ◽  
pp. 235-243
Author(s):  
Baghdad Science Journal

Manganese is considered as one of heavy metals with high toxicity .This element has been used widely in various industries and it is spread with huge quantities in polluted industries areas. As a result the concentrations of this element in the environment have increased and consequently producing acute toxic effects in different tissues and organs of all organisms. A study has been conducted on (30) female of Swiss albino mice, to find out the effect of manganese chloride in histopathological changes of ovaries. The study includes, giving the manganese chloride with concentrations (150, 200 and 250 mg/kg) for (15, 30 and 45 day) for each concentration. The study has reported the existence of histopathological changes in the ovaries including congestion, reddening with emergence of blood vessels. In addition to that there is decrease in their weights and their sizes get smaller. Also there is degeneration in cells of the corpus lutum, and decrease in number of these bodies in the ovaries, with increase in atretic follicles, especially within the concentration (250 mgkg) for (45 day).


Author(s):  
Egon Andoni ◽  
Enkeleda Ozuni ◽  
Majlind Sulce ◽  
Dorjana Beqiraj ◽  
Albana Munga ◽  
...  

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