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Vilela DD, Justino AB, Caixeta DC, de Souza AV, Teixeira RR, Franco RR, Saraiva AL, Fonseca BB, Dantas NO, Silva ACA, Espindola FS. Increased selenium concentration in the synthesis of CdSe magic-sized quantum dots affects how the brain responds to oxidative stress. J Biomed Mater Res B Appl Biomater 2021; 110:1140-1150. [PMID: 34928544 DOI: 10.1002/jbm.b.34988] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 10/21/2021] [Accepted: 11/27/2021] [Indexed: 01/14/2023]
Abstract
CdSe magic-sized quantum dots (MSQDs) have been widely used as fluorescent probes in biological systems due to their excellent optical properties with a broader fluorescence spectrum and stable luminescence in biological media. However, they can be cytotoxic and alter the redox balance depending on the amounts of Cd2+ adsorbed on their surface. Thus, the present study aimed to evaluate whether increases in selenium concentration in the synthesis of CdSe-MSQDs decrease the oxidative stress caused by Cd2+ -based quantum dots. CdSe-MSQDs synthesized with different concentrations of selenium were investigated against oxidative stress in the brain of chicken embryos by examining total antioxidant capacity, lipid peroxidation, thiol, and glutathione contents, as well as the activities of glutathione peroxidase, superoxide dismutase (SOD), catalase (CAT), and glutathione reductase. In addition, the vascularization of the chorioallantoic membrane (CAM) analysis was performed. Higher selenium concentrations alter the surface defect levels (decrease free Cd2+ ) and controlled the oxidative effects of CdSe-MSQDs by reducing the lipid peroxidation, restoring the glutathione defense system and the antioxidant enzymes SOD and CAT, and maintaining the vascular density of the CAM. The current findings reinforce the study of the effects of the presence of Cd2+ ions on the surface of quantum dots, changing toxicity, and aiming interesting strategies of nanomaterials in biological systems.
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Affiliation(s)
- Danielle Diniz Vilela
- Biochemistry and Molecular Biology Laboratory, Institute of Biotechnology, Federal University of Uberlandia, Uberlandia, Brazil
| | - Allisson Benatti Justino
- Biochemistry and Molecular Biology Laboratory, Institute of Biotechnology, Federal University of Uberlandia, Uberlandia, Brazil
| | - Douglas Carvalho Caixeta
- Biochemistry and Molecular Biology Laboratory, Institute of Biotechnology, Federal University of Uberlandia, Uberlandia, Brazil
| | - Adriele Vieira de Souza
- Biochemistry and Molecular Biology Laboratory, Institute of Biotechnology, Federal University of Uberlandia, Uberlandia, Brazil
| | - Renata Roland Teixeira
- Biochemistry and Molecular Biology Laboratory, Institute of Biotechnology, Federal University of Uberlandia, Uberlandia, Brazil
| | - Rodrigo Rodrigues Franco
- Biochemistry and Molecular Biology Laboratory, Institute of Biotechnology, Federal University of Uberlandia, Uberlandia, Brazil
| | - André Lopes Saraiva
- Biochemistry and Molecular Biology Laboratory, Institute of Biotechnology, Federal University of Uberlandia, Uberlandia, Brazil
| | | | - Noelio Oliveira Dantas
- Laboratory of New Nanostructured and Functional Materials, Physics Institute, Federal University of Alagoas, Maceio, Brazil
| | - Anielle Christine Almeida Silva
- Laboratory of New Nanostructured and Functional Materials, Physics Institute, Federal University of Alagoas, Maceio, Brazil.,Postgraduate Program of the Northeast Biotechnology Network (RENORBIO), Federal University of Alagoas, Maceio, Brazil
| | - Foued Salmen Espindola
- Biochemistry and Molecular Biology Laboratory, Institute of Biotechnology, Federal University of Uberlandia, Uberlandia, Brazil
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Tombarkiewicz B, Trzeciak K, Bojarski B, Lis MW. The effect of methionine and folic acid administered in ovo on the hematological parameters of chickens (Gallus gallus domesticus). Poult Sci 2020; 99:4578-4585. [PMID: 32868002 PMCID: PMC7598025 DOI: 10.1016/j.psj.2020.05.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 04/27/2020] [Accepted: 05/22/2020] [Indexed: 11/19/2022] Open
Abstract
Methionine (Met), an essential amino acid in poultry diets, when overdosed may cause hyperhomocysteinemia, which is mainly a trigger for cardiovascular diseases in humans. Homocysteine is neutralized (remethylated) in the presence of folic acid (FA), which also plays an important role in hematopoiesis and participates in the synthesis of DNA, and its deficiencies may result in the development of neural tube defects. One of the basic tools in studying the impact of both xenobiotics and nutrients on the animal organism is hematological analysis. Thus, the aim of this study was to determine the effect of in ovo supplementation with Met and FA on the hematological parameters of broiler chickens. On the 17th day of incubation, embryonated eggs (Ross 308) were injected with 5 or 25 mg of Met per egg (M5 and M25), 3 and 15 mg of FA per egg (F3 and F15), or a mixture of these 2 compounds (M5/F3 and M25/F15). The broilers were reared in accordance with welfare regulations and fed with commercial diets ad libitum. Blood samples were collected on the first, seventh, and 35th day of rearing (D1, D7, and D35), and complete hematological analysis was performed. The observed changes in red blood cell parameters probably result from physiological changes occurring during bird growth. Mean erythrocyte volume decreased with the age of chickens in the control, M5, and M25 groups, but not in those supplied with FA. Among supplemented groups, the number of white blood cells on D1 was lower only in group M5 than in the sham (C) group. The analysis of leukograms showed no significant differences between the groups. Comparing D1 with D7 in the group injected with a higher dose of Met and FA (MF25/15), a statistically significant increase in the percentage of lymphocytes and a significant decrease in the percentage of heterophils were observed. In addition, in the group injected with a higher FA dose (F15), there was statistically significant reduction in the percentage of eosinophils and a significant increase in the percentage of monocytes at day 7 compared with day 1. It seems that Met supplementation led to temporary immunosuppression in the animals.
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Affiliation(s)
- Barbara Tombarkiewicz
- Department of Zoology and Animal Welfare, Faculty of Animal Science, University of Agriculture in Krakow, 30-059 Krakow, Poland
| | - Karolina Trzeciak
- Department of Zoology and Animal Welfare, Faculty of Animal Science, University of Agriculture in Krakow, 30-059 Krakow, Poland
| | - Bartosz Bojarski
- Department of Clinical Biochemistry and Laboratory Diagnostics, Faculty of Medicine, University of Opole, 45-052 Opole, Poland
| | - Marcin W Lis
- Department of Zoology and Animal Welfare, Faculty of Animal Science, University of Agriculture in Krakow, 30-059 Krakow, Poland.
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