Role of metal speciation in lead-induced oxidative stress to Vicia faba roots

Shahid, Muhammad; Dumat, Camille; Pourrut, Bertrand; Abbas, Ghulam; Shahid, Naeem; Pinelli, Éric

doi:10.1134/s1021443715040159

Cited by 65 publications

(32 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Heavy metals enter into plants mainly via roots from the soil and travel along the food chain [9].Once entered in the bodies of living organisms, heavy metals can pose serious threats due to their non-biodegradable nature, long biological half-lives and their potential to accumulate in different body parts, e.g., fatty tissues [10]. Moreover, most of the heavy metals are extremely toxic because of their solubility in water.…”

Section: Introductionmentioning

confidence: 99%

Heavy Metals Contamination and Potential Human Health Risk via Consumption of Vegetables from Selected Communities in ONELGA, Rivers State, Nigeria

Ogbo

Patrick-Iwuanyanwu

2019

EJNFS

View full text Add to dashboard Cite

Background: Anthropogenic activities such as excessive oil exploration, automobile emissions with agricultural activities, etc tend to elevate the concentrations of heavy metals in the soil. These metals are accumulated by plant roots, thereby resulting to heavy metal contamination of such plants. Objectives: This study evaluated the concentration of heavy metals namely: Lead (Pb), Cadmium (Cd), Nickel (Ni), Arsenic (As), Iron (Fe), and Copper (Cu) in edible vegetables from selected communities in Ogba/Egbema/Ndoni Local Government Area (ONELGA), Rivers State, Nigeria, and the concentrations of these metals were used to assess the human health risk posed to the consumers of the edible vegetables. Materials and Methods: Sixteen different vegetable samples comprising Vernonia amygdalina, Talinum triangulare, Abelmoschus esculentus and Telfairia occidentalis were digested and analyzed for heavy metals using Flame Atomic Absorption Spectrophotometer (F-AAS). Results obtained from this study were used to estimate the human health risk of these heavy metals. Results: The results showed that the concentrations of Pb, Cd, Ni, As, Fe, and Cu ranged from 0.168-4.908; 0.364-2.977; 2.780-10.241; 0.157-2.633; 61.589-101.520 and 12.029-46.540 mg/kg, respectively. The concentrations of Pb, Cd, Ni and As in some of the analyzed vegetable samples exceeded the permissible limit as recommended by WHO/FAO, EC/CODEX and NAFDAC respectively. The concentration of Fe and Cu were below the permissible limit as recommended by WHO/FAO. The Estimated Daily Intake (EDI) of Pb and Cd exceeded the permissible tolerable daily intake of metals (TDI) but fall within the upper tolerable daily intake (UTDI) recommended by Institute of medicine, FDA, also Ni, Fe, and Cu fall within the recommended TDI and the UTDI. The EDI values of As exceeded the recommended TDI and the UTDI. The Target Hazard Quotient (THQ) and Hazard Index (HI) values of Pb, Cd, Cu and Ni were greater than 1. The Life Cancer Risk (LCR) of Pb were within the range of permissible predicted lifetime risks for carcinogens as recommended by US EPA. Conclusion: The result from the present study indicate that the exposed population may be at risk of Pb, Cd, Ni and Cu toxicity.

show abstract

Section: Introductionmentioning

confidence: 99%

Heavy Metals Contamination and Potential Human Health Risk via Consumption of Vegetables from Selected Communities in ONELGA, Rivers State, Nigeria

Ogbo

Patrick-Iwuanyanwu

2019

EJNFS

View full text Add to dashboard Cite

show abstract

“…Long term exposure with these toxic elements, even at insignificant levels, causes noxious effects for humans and other living beings. Being nonbiodegradable in nature, persistent in environment and potential bioaccumulation, these metals lead to severe hazards once these enter the bodies of living organisms (Shahid et al, 2015a). Many reports suggest that the continued ingestion of food contaminated with heavy metals can damage liver, nervous, cardiovascular, kidney and/or causing cancers (Jarup, 2003).…”

Section: Introductionmentioning

confidence: 99%

Heavy metals in soil and vegetables grown with municipal wastewater in Lahore

Hamid

Mushtaq

Nazir

et al. 2017

Bangladesh J. Sci. Ind. Res.

View full text Add to dashboard Cite

Heavy metals contamination of fruits and vegetables as a consequence of wastewater irrigation is most important concern today. Present study measures heavy metals concentration (Cr, Cu and Pb) in soil and vegetable samples collected from agriculture area around four major drains of Lahore (Hudiara drain, BabuSabu drain, Chota Ravi drain and Kharak drain). Results show that concentration of Cu, Cr and Pb in soil samples were in compliance with WHO and EU standards, with an average of 2.221 + 1.184, 5.314 + 1.0511 and 3.864 + 1.6095 mg/kg respectively. Cu contentin vegetablesranged from 0.4-18.9 mg/Kg (average of 4.11 + 6.639 mg/kg), was within limits while Cr in Lady Finger, from Chota Ravi drain area, was 13.2 mg/Kg which is higher than permissible limit (2.4 mg/Kg). While Pb concentration in vegetables samples varied between 0.7 -8.1 mg/Kg (Mean 2.329 + 2.592 mg/kg), which was also higher than the standard (0.3 mg/Kg).Keywords: Heavy metals; Drains; Contamination; Soil; Vegetables Available online at www.banglajol.info Bangladesh J. Sci. Ind. Res. 52(4), 331-336, 2017331-336, Jimoh et al., 2012Nazemi, 2012;Perveen et al., 2012;Tasrina et al., 2015; Delbari and Kulkarni, 2013;Najam et al., 2015). Vegetables are an important constituent of diet. Comparison of vegetables, fruits and other grain crops shows that heavy metals are largely accumulated in the edible parts of vegetables (Mapanda et al., 2005). Vegetables absorb and store high quantity of these harmful metals and become source of health problems when ingested by humans and animals (Alam et al., 2003;Sobukola et al., 2010). Elevated concentrations of Cd, Cu, Co and Pb in food stuff are basis of diseases such as bone cancer, high prevalence of upper intestinal cancer, reproductive effects, hypertension and renal failure (Turkdogan et al., 2003). Long term exposure with these toxic elements, even at insignificant levels, causes noxious effects for humans and other living beings. Being nonbiodegradable in nature, persistent in environment and potential bioaccumulation, these metals lead to severe hazards once these enter the bodies of living organisms (Shahid et al., 2015a). Many reports suggest that the continued ingestion of food contaminated with heavy metals can damage liver, nervous, cardiovascular, kidney and/or causing cancers (Jarup, 2003). Extensive evidence of health hazards due to intake of vegetables grown in sewage irrigated water has been reported (Avci, 2012;Ghosh et al., 2012;Wang et al., 2012;Weldegebriel et al., 2012;Xue et al., 2012). Iqbal et al. (2016) carried out a study in Pakistan to assess the concentrations of heavy metals in irrigation water, soil and vegetables, their transfer factors and human health risk. Similar study was conducted by Khan et al. (2013) to evaluate heavy metals in and around Lahore district and analysis revealed that metal concentration were higher when compared with WHO applicable limits. Similarly, Hamid et al. (2016) studied heavy metal contamination of vegetables and soil of Ruhidrain area and t...

show abstract

“…One way of assessing these phytotoxic responses is by measuring the production of reactive oxygen species (ROS), as they are regulated by biotic and abiotic stresses [19]. Enhanced generation of ROS deteriorates the cell redox status [20] -especially by damaging biological molecules (nucleotides, proteins, carbohydrates, fatty acids, etc.) and membrane structures by induction reactions [21].…”

mentioning

confidence: 99%