Impacts of rare earth elements on animal health and production: Highlights of cerium and lanthanum

Abdelnour, Sameh A.; El‐Hack, Mohamed E. Abd; Khafaga, Asmaa F.; Noreldin, Ahmed E.; Arif, Muhammad; Chaudhry, Maria Tabassum; Losacco, Caterina; Abdeen, Ahmed; Abdel-Daim, Mohamed M.

doi:10.1016/j.scitotenv.2019.02.270

Cited by 127 publications

(48 citation statements)

References 51 publications

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“…Heat stress could increase the generation of cellular reactive oxygen species (ROS), which leads to protein degradation and further decline in protein synthesis [1,39]. Excessive production of ROS results in augmented lipid peroxidation, cellular damage, oxidative stress, and inflammatory responses [1,40]. Pro-inflammatory cytokines (e.g., IL or TNF-γ) are supposed to be responsible for the detrimental effects of a hot environment.…”

Section: Discussionmentioning

confidence: 99%

Effects of Dietary Biological or Chemical-Synthesized Nano-Selenium Supplementation on Growing Rabbits Exposed to Thermal Stress

Sheiha

Abdelnour

El‐Hack

et al. 2020

Animals

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137

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The adverse influences of elevated ambient temperatures during the summer season on the rabbit industry have received increased global attention. Therefore, this study intended to compare the potential effects of nano-selenium (nano-Se) synthesized by biological (BIO) and chemical (CH) methods on growth performance, carcass variables, serum metabolites, and inflammatory cytokines responses of growing rabbits in the summer season. Two hundred and fifty weaned rabbits (males, 35 days of age) were randomly divided into five treatment groups of 50 rabbits each (each group had five replicates with ten male rabbits). Treatment groups were fed a control diet and four controlled diets supplemented with nano-Se synthesized by biological method (BIO25 and BIO50, with a 25 and 50 mg of nano-Se/kg diet, respectively) and chemical method (CH25 and CH50, with a 25 and 50 mg of nano-Se/kg diet, respectively) for eight weeks. During 11 to 13 weeks of age, a gradual enhancement in live body weight (LBW), feed intake (FI) and feed conversion ratio (FCR) was noticed with BIO25 and BIO50 treatments compared to those in the other groups. The carcass percentage was significantly higher (p < 0.01) for animals fed with BIO25 than the other groups. The other organ functions were significantly higher (p < 0.01) in heat-stressed groups compared to that of nano-Se groups. Increasing the level of only BIO from a 25 to a 50 mg/kg diet gave more improvement in the studied parameters. Additionally, the concentrations of serum urea, triglycerides (TG), and glutamyl transferase (GGT) were lower (p < 0.01) in both treated and untreated groups. Likewise, the supplementation with nano-Se (BIO25, BIO50, or CH25) significantly improved the antioxidant indices and inflammatory cytokines responses as indicated from serum metabolites. Based on the study results, nano-Se especially synthesized by the biological method at diet levels of 25 or 50 mg/kg improved the growth performance, kidney and liver functions, carcass traits, antioxidants indices, and inflammatory cytokines of growing rabbits during thermal stress.

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Section: Discussionmentioning

confidence: 99%

Effects of Dietary Biological or Chemical-Synthesized Nano-Selenium Supplementation on Growing Rabbits Exposed to Thermal Stress

Sheiha

Abdelnour

El‐Hack

et al. 2020

Animals

Self Cite

137

106

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“…REEs are known for their exceptional chemical, catalytic, electrical, magnetic, and optical characteristics, which have received particular attention due to their industrial applications in electronics, superconductors, and catalysts, among others. In addition, REEs have been shown to promote the growth of plants and the body weight gain of animals; therefore, agricultural and animal production industries are also interested in these elements (Hu et al, 2006;Xu and Wang, 2007;Abdelnour et al, 2019;Agathokleous et al, 2019). Due to the transition to a green, low-carbon economy, REEs are considered the most critical raw material groups with the highest supply risk, as explained by the European commission in 2010, which is reviewed in Binnemans et al (2013).…”

Section: Introductionmentioning

confidence: 99%

Biosorption of Rare-Earth Elements From Aqueous Solutions Using Walnut Shell

et al. 2020

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Agricultural wastes are considered as green adsorbents that can work as an alternative to recover critical and scarce metals from secondary sources. Critical elements as rare-earth elements (REEs) can be obtained from electronic wastes or tailings and could be recovered using these green alternatives. In this study, walnut shell (WS) was tested to determine whether several REEs can be efficiently retained by this green adsorbent. Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), thermogravimetry, and differential scanning calorimetry (TG-DSC) were used to characterize WS before and after REE adsorption. Analytical performance of REE quantification was evaluated, besides adsorption capacity and isotherms that were calculated in order to determine the model that fit well to REE adsorption. ICP-OES results indicated the lowest limit of detection and quantification (LOD and LOQ) with Eu (0.08 and 0.23 ppb, respectively); nevertheless, quantification of other elements was also at the ppb level. In order to obtain the highest adsorption of metals, 75-and 2,000-µm particle sizes were studied, reaching >80% of adsorption with both sizes. Additionally, several pH values were tested in order to determine the optimum condition for maximal adsorption and adsorption capacity, noticing that pH 4 showed the best adsorption percentage (>85%, qe = 6.5-8 mg/g). The Langmuir isotherm model fitted well for the Eu, La, Sm, and Gd adsorption equilibrium. Characterization of WS was done using FTIR, TG-DSC, and SEM. FTIR analysis showed several changes in the spectra after adsorption of REE tested, but major changes were observed at the OH group, which shifted up to 31 cm −1 of wavelength. Additionally, TG-DSC showed that WS pyrolysis was divided in three stages: vaporization of moisture (about 10% of weight loss); thermal decomposition of hemicellulose, cellulose, and lignin (higher than 60% of weight loss); and high-temperature calcination of residues (<25%). Finally, SEM characterization showed empty and filled pores of different sizes in WS after metal adsorption, and a more rugged aspect was observed. This study reveals that WS is an efficient low-cost adsorbent for REEs and can be used for future recovery of these elements from secondary sources.

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“…The REEs are not as rare in geological abundance as other toxic metals, and China has around 90% of the world's detected REEs [3,4]. The expanding applications of REEs have led to a great deal of human exposures from occupational, environmental, medical, and iatrogenic routes [5]. Since REEs were commonly incorporated into agriculture, forage additives, and fertilizers [2,6], they can be up-taken, bio-accumulated, and bio-magnified by the human body via the food chain [7], and accumulate in the human body to the ends of life after they enter the body [8]; thus, more concerns and further investigations about the long-term effects of REE accumulations on human health are urgently needed.…”

Section: Introductionmentioning

confidence: 99%

The Accumulation and Metabolism Characteristics of Rare Earth Elements in Sprague–Dawley Rats

Cao

et al. 2020

IJERPH

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The current study aims to investigate the influence of five rare earth elements (REEs) (i.e., lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), and gadolinium (Gd)) on the growth of Sprague–Dawley (SD) rats, and to explore the accumulation characteristics of REEs in tissues and organs with different doses as well as the detoxification and elimination of high-dose REEs. Fifty healthy male SD rats (140~160 g) were randomly divided into five groups and four of them were given gavage of sodium citrate solution with REEs in different doses, one of which was the control group. Hair, blood, and bone samples along with specific viscera tissue samples from the spleen and the liver were collected for detection of REEs by Inductively Coupled Plasma-Mass Spectrometry (ICP-MS). Treated rats expressed higher concentrations of REEs in the bones, the liver, and spleen samples than the control group (P < 0.05). Few differences were found in relative abundance of La, Ce, Pr, Nd, and Gd in the hair and the liver samples, although different administration doses were given. The relative abundance of Ce in bone samples was significantly lower in the low-dose group and control group, whereas the relative abundance of La and Pr in the bone samples were highest among all groups. Although in the REEs solution, which was given to rats in high-dose group, the La element had a higher relative abundance than Ce element, it ended up with higher Ce element relative abundance than La element in the spleen samples. REEs had a hormetic effect on body weight gain of SD rats. The accumulation of the measured REEs were reversible to low concentrations in the blood and hair, but non-reversible in the bones, the spleen, and the liver. Different tissues and organs can selectively absorb and accumulate REEs. Further inter-disciplinary studies about REEs are urgently needed to identify their toxic effects on both ecosystems and organisms.

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Impacts of rare earth elements on animal health and production: Highlights of cerium and lanthanum

Cited by 127 publications

References 51 publications

Effects of Dietary Biological or Chemical-Synthesized Nano-Selenium Supplementation on Growing Rabbits Exposed to Thermal Stress

Effects of Dietary Biological or Chemical-Synthesized Nano-Selenium Supplementation on Growing Rabbits Exposed to Thermal Stress

Biosorption of Rare-Earth Elements From Aqueous Solutions Using Walnut Shell

The Accumulation and Metabolism Characteristics of Rare Earth Elements in Sprague–Dawley Rats

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