scholarly journals Toxic Effect of Acute Cadmium and Lead Exposure in Rat Blood, Liver, and Kidney

Author(s):  
Milena Andjelkovic ◽  
Aleksandra Buha Djordjevic ◽  
Evica Antonijevic ◽  
Biljana Antonijevic ◽  
Momcilo Stanic ◽  
...  

Background: Cadmium and lead are widespread and non-biodegradable pollutants of great concern to human health. In real life scenarios, we are exposed to mixtures of chemicals rather than single chemicals, and it is therefore of paramount importance to assess their toxicity. In this study, we investigated the toxicity of Cd and Pb alone and as a mixture in an animal model of acute exposure. Methods: Experimental groups received a single treatment of aqueous solution of Cd-chloride (15 and 30 mg/kg body weight (b.w.) and Pb-acetate (150 mg/kg b.w.), while the mixture group received 15 mg Cd/kg b.w. and 150 mg Pb/kg b.w. Toxic effects of individual metals and their mixture were investigated on hematological and biochemical parameters, and the redox status in the plasma, liver, and kidneys of treated Wistar rats. Results: Tissue-specific changes were recorded in various parameters of oxidative damage, while the accumulation of metals in tissues accompanied the disturbances of both hematological and biochemical parameters. It was observed that the level of toxic metals in tissues had a different distribution pattern after mixture and single exposure. Conclusions: Comprehensive observations suggest that exposure to Cd and Pb mixtures produces more pronounced effects compared to the response observed after exposure to single metal solutions. However, further research is needed to confirm toxicokinetic or toxicodynamic interactions between these two toxic metals in the organisms.

2021 ◽  
Vol 12 (6) ◽  
pp. 35-39
Author(s):  
Adeeba Anjum ◽  
Ashik Mosaddik ◽  
Mir Imam Ibne Wahed ◽  
Md. Ekramul Haque

The current study was carried out to investigate the sub-acute toxicity of 3-O--D-glucopyranosyl-(24)-ethylcholesta-5,22,25-triene, a steroidal glycoside isolated from the flowers of Alangium salviifolium Wang on Long Evan’s rat. After intra-peritoneal administration of the compound at a dose of 300 μg/rat/day for 14 consecutive days, no mortality or significant changes in body weight or behavior were observed. The blood samples of the rats were examined for hematological and biochemical parameters which were statistically insignificant when compared to that of the control group. All the vital organs showed normal histopathological architecture (heart, lungs, liver and kidney) in comparison to the control group. This preliminary investigation demonstrate that the compound is safe at dose of 300 μg/rat/day for 14 consecutive days. But acute, sub-chronic and chronic toxicity evaluations as well as clinical trials need to be done.


2002 ◽  
Vol 70 (2) ◽  
pp. 135-145 ◽  
Author(s):  
◽  
Al-Shabanah OA ◽  
El-Hadiyah TM ◽  
Al-Majed AA

We have evaluated vigabatrin (γ-vinyl γ-aminobutyric acid), an irreversible inhibitor of γ-aminobutyric acid (GABA)-transaminase responsible for GABA degradation, for its effects on food consumption, body weight changes, fluid intake, changes in hematological and biochemical parameters in plasma liver and kidney of Swiss albino mice. Mice received vigabatrin 0.26% wlv chronically in drinking water for 7, 14 and 21 days. Changes in all the parameters were recorded aRer 7, 14 and 21 days respectively in different groups. Food consumption was comparable to the control group with minor fluctuations. The body weight declined significantly but only after 3-week treatment with no appreciable change in organ indices or relative organ indices. There were essentially no adverse effects on hematological parameters (RBC, WBC, HGB, neutrophils, eosinophils, monocytes, lymphocytes and basophils) with this treatment. However, there was a decrease in monocyte counts during the first week and an increase in the neutrophil counts during the third week of vigabatrin treatment. In one part plasma biochemical parameters like AST, ALT, CK-MB, creatinine, glucose and urea were also assessed with the same dose regimen. It was observed that only CK-MB and GPT activity levels were altered slightly significantly and are thought to be a result of cross enzyme inhibitions. In this experiment it was observed that lipid peroxide levels measured, as malondialdehyde did not change appreciably in both liver and kidney tissues. However, the levels of glutathione (non-protein sulfhydryl; GSH) declined significantly in comparison to control in liver and kidney. A comparison of level of GSH in liver and kidney shows that this depletion was at early time points in the former. The depletion of GSH suggests the possible involvement of GSH in detoxification process and corroborates its role in protection.


2018 ◽  
Vol 12 (2) ◽  
pp. 46-52 ◽  
Author(s):  
A.I. Varlamova

The purpose of the research: study of the influence of increased doses of fenbendazole supramolecular complex (FSMC) on sheep’s organism. Materials and methods. The experiment was carried out at the Podolsk Department of All-Russian Scientific Research Institute of Fundamental and Applied Parasitology of Animals and Plants named after K. I. Skryabin on 20 manorial invasion-free sheep aged 2-3 years old. Animals were divided according to the principle of analogues into 4 groups, 5 heads in each group. Animals of the 1, 2 and 3 group were orally administered with FSMC given as a single dose of 2, 6, 10 mg/kg, respectively, according to the active substance, i.e in therapeutic and in a dose increased by 3 and 5 times. Sheep of the fourth group didn’t receive the drug and they were as control. Study of clinical, hematological and biochemical parameters of animals from all groups was conducted 1 day before and in 1, 3, 5 days after administration of the drug by means of standard methods. Results and discussion. FSMC in therapeutic dose as well as in a dose increased by 3 and 5 times doesn’t have negative influence on clinical, hematological and biochemical parameters of the sheep. State of the sheep, which received the drug in doses of 20, 60, 100 mg/kg, was within the physiologically normal state and didn’t differ from the state before administration of the drug and from the animals of the control group. Drug security index exceeds 5. Red blood cell count, white blood cell count, hemoglobin count, leukogram parameters as well as biochemical parameters of blood: activity of alkaline phosphatase and amylase, bilirubin, creatinine, urea and glucose counts were within normal limits and didn’t differ from the parameters of the control animals.


2020 ◽  
Vol 8 (3) ◽  
pp. 239-254 ◽  
Author(s):  
Reza Mahjub ◽  
Farzane K. Najafabadi ◽  
Narges Dehkhodaei ◽  
Nejat Kheiripour ◽  
Amir N. Ahmadabadi ◽  
...  

Background: Insulin, like most peptides, is classified as a hydrophilic and macromolecular drug that is considered as a low permeable and unstable compound in the gastrointestinal (GI) tract. The acidic condition of the stomach can degrade insulin molecules. Moreover, the presence of proteolytic activities of some enzymes such as trypsin and chymotrypsin can hydrolyze amide-bonds between various amino-acids in the structures of peptides and proteins. However, due to its simplicity and high patient compliance, oral administration is the most preferred route of systemic drug delivery, and for the development of an oral delivery system, some obstacles in oral administration of peptides and proteins including low permeability and low stability of the proteins in GI should be overcome. Objective: In this study, the effects of orally insulin nanoparticles (INPs) prepared from quaternerized N-aryl derivatives of chitosan on the biochemical factors of the liver in diabetic rats were studied. Methods: INPs composed of methylated (amino benzyl) chitosan were prepared by the PEC method. Lyophilized INPs were filled in pre-clinical capsules, and the capsules were enteric-coated with Eudragit L100. Twenty Male Wistar rats were randomly divided into four groups: group1: normal control rats, group 2: diabetic rats, group 3: diabetic rats received capsules INPs(30 U/kg/day, orally), group 4: the diabetic rats received regular insulin (5 U/kg/day, subcutaneously). At the end of the treatment, serum, liver and kidney tissues were collected. Biochemical parameters in serum were measured using spectrophotometric methods. Also, oxidative stress was measured in plasma, liver and kidney. Histological studies were performed using H and E staining . Results: Biochemical parameters, and liver and kidney injury markers in serum of the diabetic rats that received INPs improved significantly compared with the diabetic group. INPs reduced oxidative toxic stress biomarkers in serum, liver and kidney of the diabetic treated group. Furthermore, a histopathological change was developed in the treated groups. Conclusion: Capsulated INPs can prevent diabetic liver and oxidative kidney damages (similar regular insulin). Therefore oral administration of INPs appears to be safe. Lay Summary: Although oral route is the most preferred route of administration, but oral delivery of peptides and proteins is still a challenging issue. Diabetes Mellitus may lead to severe complications, which most of them are life-threatening. In this study, we are testing the toxicity of oral insulin nanoparticles in kidney and liver of rats. For this investigation, we will prepare insulin nanoparticles composed of a quaternized derivative of chitosan. The nanoparticles will be administered orally to rats and the level of oxidative stress in their liver and kidney will be determined. The data will be compared to the subcutaneous injection of insulin.


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