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de Lima E Souza Mesquita GC, Da Cruz ER, Corrêa DS, de Barros Falcão Ferraz A, Miri JM, Farias IV, Reginatto FH, Boaretto FBM, Dos Santos DM, da Silva J, Grivicich I, Picada JN. Genotoxic and antiproliferative properties of Endopleura uchi bark aqueous extract. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2024; 87:516-531. [PMID: 38619152 DOI: 10.1080/15287394.2024.2340069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
The bark extract from Endopleura uchi has been widely used in traditional medicine to treat gynecological-related disorders, diabetes, and dyslipidemias albeit without scientific proof. In addition, E. uchi bark extract safety, especially regarding mutagenic activities, is not known. The aim of this study was to determine the chemical composition, antitumor, and toxicological parameters attributed to an E. uchi bark aqueous extract. The phytochemical constitution was assessed by colorimetric and chromatographic analyzes. The antiproliferative effect was determined using sulforhodamine B (SRB) assay using 4 cancer cell lines. Cytotoxic and genotoxic activities were assessed utilizing MTT and comet assays, respectively, while mutagenicity was determined through micronucleus and Salmonella/microsome assays. The chromatographic analysis detected predominantly the presence of gallic acid and isoquercitrin. The antiproliferative effect was more pronounced in human colon adenocarcinoma (HT-29) and human breast cancer (MCF-7) cell lines. In the MTT assay, the extract presented an IC50 = 39.1 µg/ml and exhibited genotoxic (comet assay) and mutagenic (micronucleus test) activities at 20 and 40 µg/ml in mouse fibroblast cell line (L929) and mutagenicity in the TA102 and TA97a strains in the absence of S9 mix. Data demonstrated that E. uchi bark possesses bioactive compounds which exert cytotoxic and genotoxic effects that might be associated with its antitumor potential. Therefore, E. uchi bark aqueous extract consumption needs to be approached with caution in therapeutic applications.
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Affiliation(s)
| | - Elkejer Ribeiro Da Cruz
- Laboratory of Genetic Toxicology, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil
- Center for Research in Product and Development (CEPPED), Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil
| | - Dione Silva Corrêa
- Center for Research in Product and Development (CEPPED), Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil
| | - Alexandre de Barros Falcão Ferraz
- Pharmacognosy Laboratory, Department of Industrial Pharmaceutical, Health Sciences Center, Federal University of Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Jéssica Machado Miri
- Laboratory of Cancer Biology, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil
| | - Ingrid Vicente Farias
- Pharmacognosy Laboratory, Department of Pharmaceutical Sciences, Health Sciences Center, Federal University of Santa Catarina (UFSC), Florianópolis, SC, Brazil
| | - Flávio Henrique Reginatto
- Pharmacognosy Laboratory, Department of Pharmaceutical Sciences, Health Sciences Center, Federal University of Santa Catarina (UFSC), Florianópolis, SC, Brazil
| | | | - Duani Maria Dos Santos
- Laboratory of Genetic Toxicology, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil
| | - Juliana da Silva
- Laboratory of Genetic Toxicology, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil
- Laboratory of Genetics Toxicology, La Salle University, Canoas, RS, Brazil
| | - Ivana Grivicich
- Laboratory of Cancer Biology, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil
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Carazzo CA, Peletti-Figueiró M, Fontana Nicoletti N, Scariot FJ, Echeverrigaray S, Falavigna A. Genotoxic parameters of human degenerated intervertebral discs are linked to the pathogenesis of disc degeneration. J Neurosurg Sci 2024; 68:310-319. [PMID: 35380199 DOI: 10.23736/s0390-5616.22.05553-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Degenerative disc disease (DDD) is a prevalent disorder that brings great incapacity and morbidity to the world's population. Its pathophysiology is not fully understood. DNA damage can influence this process, but so far, there have been few studies to evaluate this topic and its true importance in DDD, as well as whether there is a relation between degeneration grade and DNA damage. The objective of this study is to evaluate the degree of damage to the DNA and the relation to the severity of DDD and measure its response to this insult compared to live/dead cell parameters and reactive oxygen species activity in human discs. METHODS An experimental study was performed with 15 patients with grade IV or V Pfirrmann classification who underwent spinal surgery. Five patients were operated on two levels, resulting in 20 samples that were submitted to the comet assay to measure DNA damage. Of these, six samples were submitted to flow cytometry, and apoptosis, necrosis, cell membrane integrity, intracellular esterase activity, reactive oxygen species (ROS), caspase 3 and mitochondrial membrane potential were evaluated. RESULTS All samples had DNA damage, and the average of index damage (ID) was 78.1 (SD±65.11) and frequency damage (FD) was 49.3% (SD±26.05%). There was no statistical difference between the Pfirrmann grades and genotoxic damage. Likewise, all samples that underwent flow cytometry showed apoptosis and ROS to many different degrees. CONCLUSIONS DNA damage occurs in high-grade degeneration of human discs and contributes to activation of the apoptosis pathway and ROS production that can accelerate disc degeneration.
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Affiliation(s)
| | | | | | - Fernando J Scariot
- Enology and Applied Microbiology Laboratory, Institute of Biotechnology, University of Caxias do Sul, Caxias do Sul, Brazil
| | - Sérgio Echeverrigaray
- Enology and Applied Microbiology Laboratory, Institute of Biotechnology, University of Caxias do Sul, Caxias do Sul, Brazil
| | - Asdrubal Falavigna
- University of Caxias do Sul (UCS), Caxias do Sul, Brazil
- Cell Therapy Laboratory (LATEC), University of Caxias do Sul (UCS), Caxias do Sul, Brazil
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Boeing GANS, Provase M, Tsukada E, Salla RF, Abdalla FC. Genotoxic effect of two environmentally safe doses of cadmium on the hepato-nephrocytic system of Bombus atratus forager workers. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2024; 108:104450. [PMID: 38636745 DOI: 10.1016/j.etap.2024.104450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 04/15/2024] [Indexed: 04/20/2024]
Abstract
Eusocial bees are declining due to anthropogenic actions. Individuals can be exposed to contaminants like Cd, which have been found in pollen. Thus, we evaluated the potential genotoxicity of Cd to the hepato-nephrocitic system of Bombus atratus foraging workers exposed to environmentally safe doses of Cd (0.001 mg/kg and 0.003 mg/kg) during 72 h. To assess the genotoxicity of Cd, we conducted an alkaline comet assay. Doses of 0.001 mg/kg of Cd caused comets of levels 2 and 3, and 0.003 mg/kg of Cd induced comets of level 4, while controls exhibited regular nucleoids. Also, 0.003 mg/kg doses caused higher Damage Index, Damage Frequency, and Total Damage. Our results bring new evidence that 0.003 mg/kg Cd exerted genotoxicity to the HNS cells of B. atratus, probably affecting secondary metabolism and the detoxification capability of bees.
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Affiliation(s)
- Guilherme Andrade Neto Schmitz Boeing
- Federal University of São Carlos (UFSCar), Department of Biology (DBio-So), Laboratory of Structural and Functional Biology (LABEF), Brazil; Postgraduate Program in Biotechnology and Environmental Monitoring (PPGBMA), Center for Science and Technology for Sustainability (CCTS), UFSCar, Sorocaba, SP, Brazil.
| | - Michele Provase
- Federal University of São Carlos (UFSCar), Department of Biology (DBio-So), Laboratory of Structural and Functional Biology (LABEF), Brazil; Postgraduate Program in Biotechnology and Environmental Monitoring (PPGBMA), Center for Science and Technology for Sustainability (CCTS), UFSCar, Sorocaba, SP, Brazil
| | - Elisabete Tsukada
- Postgraduate Program in Biotechnology and Environmental Monitoring (PPGBMA), Center for Science and Technology for Sustainability (CCTS), UFSCar, Sorocaba, SP, Brazil
| | - Raquel F Salla
- Postgraduate Program in Biotechnology and Environmental Monitoring (PPGBMA), Center for Science and Technology for Sustainability (CCTS), UFSCar, Sorocaba, SP, Brazil
| | - Fabio Camargo Abdalla
- Federal University of São Carlos (UFSCar), Department of Biology (DBio-So), Laboratory of Structural and Functional Biology (LABEF), Brazil; Postgraduate Program in Biotechnology and Environmental Monitoring (PPGBMA), Center for Science and Technology for Sustainability (CCTS), UFSCar, Sorocaba, SP, Brazil
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Bucak MN, Karaşör ÖF, Sarı A, Bodu M, Ili P, Narlıçay S, Ataman MB, Sari F. Lipid mixtures (from a liposome kit) and melatonin improve post-thawed Angora goat sperm parameters. Cryobiology 2024; 115:104897. [PMID: 38636593 DOI: 10.1016/j.cryobiol.2024.104897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 04/12/2024] [Accepted: 04/12/2024] [Indexed: 04/20/2024]
Abstract
Semen freezing and storing has been widely used in reproductive biotechnology, being applied to certain males of livestock breeds or animal species with economic value such as the Angora goat. The development of a semen extender with the cryoprotective agents can prevent the deterioration of sperm parameters after thawing. This study aimed to investigate lipid mixtures (from a liposome kit, Lps) and melatonin (Mel) at different doses to prevent the deterioration of sperm parameters and to provide the cryoprotective effects on sperm DNA. The Angora goat ejaculates were collected and pooled. They were divided into seven equal volumes, and each of them was diluted with the extenders of the experimental groups with additives (Lps 321.99 μg/mL, Lps 841.33 μg/mL, Mel 0.25 mM, Mel 1 mM, Lps 321.99 μg/mL + Mel 1 mM, Lps 841.33 μg/mL + Mel 0.25 mM) and no additives (control group). After the freeze-thawing process, motility, viability, acrosome integrity, DNA double-strand breaks, and abnormal DNA integrity were assessed for different extender groups. It was determined that the use of Lps alone at low dose or the combination of Lps and Mel had significant cryoprotective effects on motility, viability, acrosome integrity, and DNA damage in Angora goat sperm. This study will help us to understand the effects of Lps and Mel used alone or in combination at different doses and which doses give the optimum spermatological parameter rates following the freeze-thawing process, and hence it will shed light on further studies.
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Affiliation(s)
- Mustafa Numan Bucak
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Selçuk University, Konya, Turkey.
| | - Ömer Faruk Karaşör
- General Directorate of Agricultural Research and Policies, Ministry of Agriculture and Forestry, Ankara, Turkey.
| | - Ayşe Sarı
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Selçuk University, Konya, Turkey.
| | - Mustafa Bodu
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Selçuk University, Konya, Turkey.
| | - Pinar Ili
- Department of Medical Services and Techniques, Denizli Vocational School of Health Services, Pamukkale University, Denizli, Turkey.
| | - Salih Narlıçay
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Selçuk University, Konya, Turkey.
| | - Mehmet Bozkurt Ataman
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Selçuk University, Konya, Turkey.
| | - Fikret Sari
- Department of Plant and Animal Production, Tavas Vocational School, Pamukkale University, Denizli, Turkey.
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França AP, Silva TA, Schulz D, Gomes-Pereira L, Cunha LMA, Gonçalves MP, Vieira JVS, Sanches MP, Koehler N, Maluf S, Poli A, da Silva-Santos JE, Assreuy J, Lemos-Senna E. Pharmacokinetics, biodistribution, and in vivo toxicity of 7-nitroindazole loaded in pegylated and non-pegylated nanoemulsions in rats. Eur J Pharm Sci 2024; 194:106695. [PMID: 38191063 DOI: 10.1016/j.ejps.2024.106695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 12/15/2023] [Accepted: 01/06/2024] [Indexed: 01/10/2024]
Abstract
Sepsis is a life-threatening condition caused by a dysregulated host response to infection. The development of sepsis is associated with excessive nitric oxide (NO) production, which plays an important role in controlling vascular homeostasis. 7-nitroindazole (7-NI) is a selective inhibitor of neuronal nitric oxide synthase (NOS-1) with potential application for treating NO imbalance conditions. However, 7-NI exhibits a low aqueous solubility and a short plasma half-life. To circumvent these biopharmaceutical limitations, pegylated (NEPEG7NI) and non-pegylated nanoemulsions (NENPEG7NI) containing 7-NI were developed. This study evaluates the pharmacokinetic profiles and toxicological properties of 7-NI loaded into the nanoemulsions. After a single intravenous administration of the free drug and the nanoemulsions at a dose of 10 mg.kg-1 in Wistar rats, 7-NI was widely distributed in the organs. The pharmacokinetic parameters of Cmax, t1/2, and AUC0-t were significantly increased after administration of the NEPEG7NI, compared to both free 7-NI and NENPEG7NI (p < 0.05). No observable adverse effects were observed after administering the free 7-NI, NEPEG7NI, or NENPEG7NI in the animals after a single dose of up to 3.0 mg.kg-1. The results indicated that 7-NI-loaded nanoemulsions are safe, constituting a promising approach to treating sepsis.
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Affiliation(s)
- Angela Patricia França
- Pharmacy Graduate Program, Department of Pharmaceutical Sciences, Federal University of Santa Catarina, Campus Trindade, Florianópolis, SC, 88040-900, Brazil.
| | - Thais Alves Silva
- Pharmacy Graduate Program, Department of Pharmaceutical Sciences, Federal University of Santa Catarina, Campus Trindade, Florianópolis, SC, 88040-900, Brazil
| | - Daniela Schulz
- Pharmacy Graduate Program, Department of Pharmaceutical Sciences, Federal University of Santa Catarina, Campus Trindade, Florianópolis, SC, 88040-900, Brazil
| | - Leonardo Gomes-Pereira
- Pharmacology Graduate Program, Department of Pharmacology, Federal University of Santa Catarina, Campus Trindade, Florianópolis, SC, 88040-900, Brazil
| | - Livia Melo Arruda Cunha
- Pharmacology Graduate Program, Department of Pharmacology, Federal University of Santa Catarina, Campus Trindade, Florianópolis, SC, 88040-900, Brazil
| | - Merita Pereira Gonçalves
- Pharmacology Graduate Program, Department of Pharmacology, Federal University of Santa Catarina, Campus Trindade, Florianópolis, SC, 88040-900, Brazil
| | - João Victor Soares Vieira
- Pharmacy Graduate Program, Department of Pharmaceutical Sciences, Federal University of Santa Catarina, Campus Trindade, Florianópolis, SC, 88040-900, Brazil
| | - Mariele Paludetto Sanches
- Pharmacy Graduate Program, Department of Pharmaceutical Sciences, Federal University of Santa Catarina, Campus Trindade, Florianópolis, SC, 88040-900, Brazil
| | - Natalia Koehler
- Citogenetics and Genomic Stability Laboratory, University Hospital Polydoro Ernani de São Thiago, Federal University of Santa Catarina, Florianopolis, SC, 88040-900, Brazil
| | - Sharbel Maluf
- Citogenetics and Genomic Stability Laboratory, University Hospital Polydoro Ernani de São Thiago, Federal University of Santa Catarina, Florianopolis, SC, 88040-900, Brazil
| | - Anicleto Poli
- Pharmacology Graduate Program, Department of Pharmacology, Federal University of Santa Catarina, Campus Trindade, Florianópolis, SC, 88040-900, Brazil
| | - José Eduardo da Silva-Santos
- Pharmacology Graduate Program, Department of Pharmacology, Federal University of Santa Catarina, Campus Trindade, Florianópolis, SC, 88040-900, Brazil
| | - Jamil Assreuy
- Pharmacology Graduate Program, Department of Pharmacology, Federal University of Santa Catarina, Campus Trindade, Florianópolis, SC, 88040-900, Brazil
| | - Elenara Lemos-Senna
- Pharmacy Graduate Program, Department of Pharmaceutical Sciences, Federal University of Santa Catarina, Campus Trindade, Florianópolis, SC, 88040-900, Brazil.
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Cavalcanti BC, Magalhães IL, Rocha DD, Stefânio Barreto F, de Andrade Neto JB, Magalhães HIF, Dos Santos CC, de Moraes MO. In vitro evaluation of cytotoxic potential of essential oil extracted from leaves of Croton heliotropiifolius Kunth in human tumor cells. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2024; 87:91-107. [PMID: 37927232 DOI: 10.1080/15287394.2023.2276894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2023]
Abstract
Croton heliotropiifolius Kunth, popularly known as "velame," is a shrub that resides in northeastern Brazil. The essential oil of C. heliotropiifolius contains high concentrations of volatile compounds in the leaves and is widely used in folk medicine for many purposes as an antiseptic, analgesic, sedative, and anti-inflammatory agent. Due to the apparent limited amount of information, the aim of this study was to determine the cytotoxic potential of essential oil extracted from leaves of C. heliotropiifolius, utilizing different human cancer cell lines (HL-60, leukemia; HCT-116, colon; MDA-MB435, melanoma; SF295, glioblastoma) and comparison to murine fibroblast L929 cell line. The chemical characterization of the essential oil revealed the presence of large amounts of monoterpenes and sesquiterpenes, the majority of which were aristolene (22.43%), germacrene D (11.38%), ɣ-terpinene (10.85%), and limonene (10.21%). The essential oil exerted significant cytotoxicity on all cancer cells, with low activity on murine L929 fibroblasts, independent of disruption of cell membranes evidenced by absence of hemolytic activity. The cytotoxicity identified was associated with oxidative stress, which culminated in mitochondrial respiration dysfunction and direct or indirect DNA damage (strand breaks and oxidative damage), triggering cell death via apoptosis. Our findings suggest that extracts of essential oil of C. Heliotropiifolius may be considered as agents to be used therapeutically in treatment of certain cancers.
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Affiliation(s)
| | - Islay Lima Magalhães
- Drug Research and Development Center, Federal University of Ceará, Fortaleza, Brazil
| | | | | | - João Batista de Andrade Neto
- Drug Research and Development Center, Federal University of Ceará, Fortaleza, Brazil
- Christus University Center (UNICHRISTUS), Fortaleza, Brazil
| | | | - Cláudio Costa Dos Santos
- Drug Research and Development Center, Federal University of Ceará, Fortaleza, Brazil
- Department of Engineering and Technology, Federal University of the Semiarid Region, Mossoró, Brazil
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7
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Braga-Neto JT, Tozetto SO, Oliveira FS, Conceição TA, Santos WPC, Fernandes MS, Baliza MD. Comet assay to evaluate chromosomal changes in chickens (Gallus gallus domesticus) contaminated by lead in a city in Bahia. BRAZ J BIOL 2023; 83:e274806. [PMID: 38126633 DOI: 10.1590/1519-6984.274806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 11/15/2023] [Indexed: 12/23/2023] Open
Abstract
Chicken (Gallus gallus domesticus) is one of the primary sources of animal protein for the Brazilian population. Thus, the safety of this food is highly relevant. This study was based on the evidence of severe contamination of these animals by metals such as lead in Santo Amaro, Bahia. This exploratory study aimed to evaluate associations between lead levels in blood of chicken exposed to a contaminated area with the occurrence of chromosomal alterations, evidencing genotoxic effects. Serum lead analysis was performed by GF-AAS after dilution with a matrix modifier solution (Triton X-100 0.2% v/v and HNO3 0.1% v/v), while chromosomal damage was evaluated using the comet assay. The results showed genotoxic effects (positive comet assay) only for the specimen sample with higher serum lead concentrations (33.9 µg dL-1), suggesting the occurrence of toxic effects at this level of exposure. This work evaluated a relationship between the reduction of serum lead levels in chicken and increased distance from the primary polluting source - a lead processing plant (COBRAC). It also showed that lead is bioavailable in this territory, contaminating chicken and causing genotoxic effects in these animals, further expanding the concern with the local biota and the health of the residents of Santo Amaro.
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Affiliation(s)
- J T Braga-Neto
- Universidade Federal do Recôncavo da Bahia - UFRB, Centro de Ciências da Saúde, Complexo Multidisciplinar de Estudos e Pesquisa em Saúde, Santo Antônio de Jesus, BA, Brasil
| | - S O Tozetto
- Universidade Federal do Recôncavo da Bahia - UFRB, Centro de Ciências da Saúde, Complexo Multidisciplinar de Estudos e Pesquisa em Saúde, Santo Antônio de Jesus, BA, Brasil
| | - F S Oliveira
- Universidade Federal do Recôncavo da Bahia - UFRB, Centro de Ciências da Saúde, Complexo Multidisciplinar de Estudos e Pesquisa em Saúde, Santo Antônio de Jesus, BA, Brasil
| | - T A Conceição
- Universidade Federal do Recôncavo da Bahia - UFRB, Centro de Ciências da Saúde, Complexo Multidisciplinar de Estudos e Pesquisa em Saúde, Santo Antônio de Jesus, BA, Brasil
| | - W P C Santos
- Instituto Federal de Educação, Ciência e Tecnologia da Bahia - IFBA, Salvador, BA, Brasil
| | - M S Fernandes
- Universidade Federal da Fronteira Sul - UFFS, Campus Passo Fundo, Passo Fundo, RS, Brasil
| | - M D Baliza
- Universidade Federal do Recôncavo da Bahia - UFRB, Centro de Ciências da Saúde, Complexo Multidisciplinar de Estudos e Pesquisa em Saúde, Santo Antônio de Jesus, BA, Brasil
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da Silva Prado L, Grivicich I, Miri JM, Charão MF, Bonfada A, Endres da Rocha G, Bondan da Silva J, Menezes Boaretto FB, Garcia ALH, da Silva J, Picada JN. Toxicological assessment of minoxidil: A drug with therapeutic potential besides alopecia. Food Chem Toxicol 2023; 182:114211. [PMID: 38007212 DOI: 10.1016/j.fct.2023.114211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 11/07/2023] [Accepted: 11/18/2023] [Indexed: 11/27/2023]
Abstract
Minoxidil is regularly prescribed for alopecia, and its therapeutic potential has expanded in recent times. However, few studies have been conducted to evaluate its toxicity, and controversial findings regarding its mutagenic activities remain unsolved. This study aimed to access cytotoxic, genotoxic, and mutagenic properties of minoxidil using the 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyl tetrazolium bromide (MTT) assay, comet assay, and micronucleus test in mouse fibroblast (L929) cells and its point mutation induction potential in the Salmonella/microsome assay. Furthermore, an in vivo toxicity assessment was conducted in Caenorhabditis elegans. Minoxidil showed cytotoxicity at 2.0 mg/mL in MTT assay. Genotoxicity was observed after 3 h treatment in L929 cells using comet assay. No mutagenic effect was observed in both the micronucleus test and the Salmonella/microsome assay. The lethal dose 50 in C. elegans was determined to be 1.75 mg/mL, and a delay in body development was detected at all concentrations. In conclusion, minoxidil induces DNA damage only in early treatment, implying that this DNA damage may be repairable. This observation corroborates the absence of mutagenic activities observed in L929 cells and Salmonella typhimurium strains. However, the toxicity of minoxidil was evident in both C. elegans and L929 cells, underscoring the need for caution in its use.
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Affiliation(s)
- Lismare da Silva Prado
- Toxicological Genetics Laboratory, Graduate Program in Cellular and Molecular Biology Applied to Health, Luteran University of Brazil (ULBRA), Av. Farroupilha, 8001, 92425-900, Canoas, RS, Brazil
| | - Ivana Grivicich
- Cancer Biology Laboratory, Graduate Program in Cellular and Molecular Biology Applied to Health, Luteran University of Brazil (ULBRA), Av. Farroupilha 8001, 92425-900, Canoas, RS, Brazil
| | - Jessica Machado Miri
- Cancer Biology Laboratory, Graduate Program in Cellular and Molecular Biology Applied to Health, Luteran University of Brazil (ULBRA), Av. Farroupilha 8001, 92425-900, Canoas, RS, Brazil
| | - Mariele Feiffer Charão
- Graduate Program in Toxicology and Analytical Toxicology, Feevale University, ERS-239, 93525-075, Novo Hamburgo, Brazil
| | - Amanda Bonfada
- Graduate Program in Toxicology and Analytical Toxicology, Feevale University, ERS-239, 93525-075, Novo Hamburgo, Brazil
| | - Gabriela Endres da Rocha
- Graduate Program in Toxicology and Analytical Toxicology, Feevale University, ERS-239, 93525-075, Novo Hamburgo, Brazil
| | - Juliana Bondan da Silva
- Toxicological Genetics Laboratory, Graduate Program in Cellular and Molecular Biology Applied to Health, Luteran University of Brazil (ULBRA), Av. Farroupilha, 8001, 92425-900, Canoas, RS, Brazil
| | - Fernanda Brião Menezes Boaretto
- Toxicological Genetics Laboratory, Graduate Program in Cellular and Molecular Biology Applied to Health, Luteran University of Brazil (ULBRA), Av. Farroupilha, 8001, 92425-900, Canoas, RS, Brazil
| | - Ana Letícia Hilario Garcia
- Toxicological Genetics Laboratory, Graduate Program in Cellular and Molecular Biology Applied to Health, Luteran University of Brazil (ULBRA), Av. Farroupilha, 8001, 92425-900, Canoas, RS, Brazil; Toxicological Genetics Laboratory, LaSalle University, Av. Victor Barreto, 2288, 92010-000, Canoas, RS, Brazil
| | - Juliana da Silva
- Toxicological Genetics Laboratory, Graduate Program in Cellular and Molecular Biology Applied to Health, Luteran University of Brazil (ULBRA), Av. Farroupilha, 8001, 92425-900, Canoas, RS, Brazil; Toxicological Genetics Laboratory, LaSalle University, Av. Victor Barreto, 2288, 92010-000, Canoas, RS, Brazil
| | - Jaqueline Nascimento Picada
- Toxicological Genetics Laboratory, Graduate Program in Cellular and Molecular Biology Applied to Health, Luteran University of Brazil (ULBRA), Av. Farroupilha, 8001, 92425-900, Canoas, RS, Brazil.
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Carneiro Lobo LA, Alves Santos P, de Sousa JT, Picada JN, Bianchi SE, Bassani VL, da Silva FC, Ethur EM, Goettert MI, Pereira P. Toxicological profile of the Hymenaea courbaril stem bark hydroalcoholic extract using in vitro bioassays and an alternative in vivo Caenorhabditis elegans model. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2023; 86:678-695. [PMID: 37482814 DOI: 10.1080/15287394.2023.2237069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/25/2023]
Abstract
Hymenaea genus has been used in folk medicine in Brazil, but few studies investigated its toxicity profile. Thus, the aim of this study was to determine toxicological parameters of Hymenaea courbaril stem bark hydroalcoholic extract by utilizing three cell lines including murine macrophages (RAW 264.7), mouse fibroblast cells (L929) and human lung fibroblast (MRC-5), as well as Salmonella/microsome assay, and in vivo Caenorhabditis elegans model. The predominant detected phytoconstituents in the extract were coumarins, flavonoids, phenolics, tannins and saponins and by HPLC analysis, astilbin (AST) was found to be the main component. The DPPH assay demonstrated that H. courbaril hydroalcoholic extract exhibited potent antioxidant activity, with an IC50 of 3.12 μg/ml. The extract at concentrations of 400 and 800 μg/ml decreased cell viability 48 hr after treatment in L929 and MRC-5 cell lines. In the Raw 264.7 strain, just the highest concentration (800 μg/ml) lowered cell viability within 48 hr following exposure. The concentration of 100 μg/ml did not markedly affect cell viability in the trypan blue assay. In the alkaline comet assay the extract was found to be non-genotoxic. In the Ames test, the extract exhibited low mutagenic potential without metabolic activation, since only the highest concentrations produced an effect. H. courbaril extract only affected the survival of C. elegans at concentrations of 800 and 1600 μl/ml. These findings demonstrate that H. courbaril extract appears to exert low toxicity as evidenced in vitro and mutagenicity assays; however, the biological relevance of the response of C. elegans survival to safety assessments needs further studies.
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Affiliation(s)
- Larissa Aline Carneiro Lobo
- Laboratory of Neuropharmacology and Preclinical Toxicology, Federal University of Rio Grande Do Sul, Porto Alegre, RS - Brazil
| | - Peterson Alves Santos
- Laboratory of Neuropharmacology and Preclinical Toxicology, Federal University of Rio Grande Do Sul, Porto Alegre, RS - Brazil
| | - Jayne Torres de Sousa
- Laboratory of Genetic Toxicology, Postgraduate Program in Molecular and Cell Biology Applied to Health, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil
| | - Jaqueline Nascimento Picada
- Laboratory of Genetic Toxicology, Postgraduate Program in Molecular and Cell Biology Applied to Health, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil
| | - Sara Elis Bianchi
- Galenic Development Laboratory, Graduate in Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Rio Grande Do Sul, Porto Alegre, RS - Brazil
| | - Valquiria Linck Bassani
- Galenic Development Laboratory, Graduate in Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Rio Grande Do Sul, Porto Alegre, RS - Brazil
| | | | - Eduardo Miranda Ethur
- Postgraduate Program in Biotechnology and Post Graduate Program in Environment and Development, University of Vale Do Taquari (Univates), Lajeado, RS - Brazil
| | - Márcia Inês Goettert
- Postgraduate Program in Biotechnology and Post Graduate Program in Environment and Development, University of Vale Do Taquari (Univates), Lajeado, RS - Brazil
| | - Patrícia Pereira
- Laboratory of Neuropharmacology and Preclinical Toxicology, Federal University of Rio Grande Do Sul, Porto Alegre, RS - Brazil
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10
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Goldoni A, Pacheco MR, da Silva LB. Comet assay in Aegla platensis (Decapoda: Anomura) using a non-lethal hemolymph field sampling for in situ monitoring of freshwater genotoxicity. ECOTOXICOLOGY (LONDON, ENGLAND) 2023; 32:160-165. [PMID: 36680665 DOI: 10.1007/s10646-023-02627-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/11/2023] [Indexed: 06/17/2023]
Abstract
This study aimed to apply the comet assay on Aegla platensis crabs as a suitable non-destructive approach for in situ monitoring of freshwater genotoxicity. Animals were captured during four sampling periods in a stream under minor anthropogenic impacts in Southern Brazil. Crabs were captured with a hand net, then the hemolymph samples were collected, and the animals were released into the stream after a 20-min recovery time. Hemolymph samples were transported to the laboratory and used to perform the alkaline comet assay. Results showed an intermediate level in the DNA damage index (range 107.3-165.0 arbitrary unit). No significant differences were observed among the different sampling periods. Hemolymph was successfully used as a non-lethal source of biological samples, and the comet assay using A. platensis proved to be a feasible approach for genotoxicity studies.
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Affiliation(s)
- Angélica Goldoni
- Feevale University, ERS-239, 2755, Novo Hamburgo, Rio Grande do Sul, Brazil
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11
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Dutra da Silva A, Fracasso M, Bottari NB, Gundel S, Ourique AF, Assmann CE, Ferreira DASP, Castro MFV, Reichert KP, de Souza LAF, da Veiga ML, da Rocha MIUM, Monteiro SG, Morsch VM, Chitolina Schetinger MR, da Silva AS. Trypanosoma cruzi: Does the intake of nanoencapsulated benznidazole control acute infections? Exp Parasitol 2023; 249:108520. [PMID: 37001581 DOI: 10.1016/j.exppara.2023.108520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 03/10/2023] [Accepted: 03/28/2023] [Indexed: 03/31/2023]
Abstract
Chagas Disease (CD) affects around eight million people worldwide. It is considered a neglected disease that presents few treatment options with efficacy only in the acute phase. Nanoparticles have many positive qualities for treating parasite infections and may be effectively and widely employed in clinical medicine. This research aimed to evaluate the nanoencapsulated benznidazole treatment in animals experimentally infected with Trypanosoma cruzi. To analyze the treatment efficacy, we evaluated survival during thirty days, parasitemia, genotoxicity, and heart and liver histopathology. Thirty-five female Swiss mice were organized into seven groups characterizing a dose curve: A - Negative control (uninfected animals), B - Positive control (infected animals), C - Benznidazole (BNZ) 100 mg/kg (infected animals), D - 5 mg/kg Benznidazole nanocapsules (NBNZ) (infected animals), E - 10 mg/kg Benznidazole nanocapsules (infected animals), F - 15 mg/kg Benznidazole nanocapsules (infected animals), G - 20 mg/kg Benznidazole nanocapsules (infected animals). The animals were infected with the Y strain of T. cruzi intraperitoneally. The treatment was administered for eight days by oral gavage. It was possible to observe that the treatment with the highest NBNZ dose presented efficacy similar to the standard benznidazole drug. The 20 mg/kg NBNZ dose was able to reduce parasitemia, increase survival, and drastically reduce heart and liver tissue damage compared to the 100 mg/kg BNZ dose. Moreover, it showed a lower DNA damage index than the BNZ treatment. In conclusion, the nanoencapsulation of BNZ promotes an improvement in parasite proliferation control with a five times smaller dose relative to the standard dose of free BNZ, thus demonstrating to be a potential innovative therapy for CD.
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Affiliation(s)
- Aniélen Dutra da Silva
- Programa de Pós-Graduação em Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil.
| | - Mateus Fracasso
- Programa de Pós-Graduação em Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | - Nathieli B Bottari
- Programa de Pós-Graduação em Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | - Samanta Gundel
- Ciências das Saúde, Universidade Franciscana, Santa Maria, Rio Grande do Sul, Brazil
| | - Aline F Ourique
- Ciências das Saúde, Universidade Franciscana, Santa Maria, Rio Grande do Sul, Brazil
| | - Charles E Assmann
- Programa de Pós-Graduação em Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | - Danielle A S P Ferreira
- Programa de Pós-Graduação em Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | - Milagros F V Castro
- Programa de Pós-Graduação em Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | - Karine P Reichert
- Programa de Pós-Graduação em Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | | | - Marcelo L da Veiga
- Departamento de Morfologia, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | - Maria Izabel U M da Rocha
- Departamento de Morfologia, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | - Silvia G Monteiro
- Departamento de Microbiologia e Parasitologia, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | - Vera M Morsch
- Programa de Pós-Graduação em Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | - Maria Rosa Chitolina Schetinger
- Programa de Pós-Graduação em Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | - Aleksandro S da Silva
- Programa de Pós-Graduação em Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil; Departamento de Zootecnia, Universidade do Estado de Santa Catarina, Chapecó, Santa Catarina, Brazil.
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Synthesis, Anticancer Activity and Molecular Docking Studies of Novel N-Mannich Bases of 1,3,4-Oxadiazole Based on 4,6-Dimethylpyridine Scaffold. Int J Mol Sci 2022; 23:ijms231911173. [PMID: 36232475 PMCID: PMC9570134 DOI: 10.3390/ijms231911173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 09/19/2022] [Accepted: 09/20/2022] [Indexed: 11/17/2022] Open
Abstract
Cancer is one of the greatest challenges in modern medicine today. Difficult and long-term treatment, the many side effects of the drugs used and the growing resistance to treatment of neoplastic cells necessitate new approaches to therapy. A very promising targeted therapy is based on direct impact only on cancer cells. As a continuation of our research on new biologically active molecules, we report herein the design, synthesis and anticancer evaluation of a new series of N-Mannich-base-type hybrid compounds containing morfoline or different substituted piperazines moieties, a 1,3,4-oxadiazole ring and a 4,6-dimethylpyridine core. All compounds were tested for their potential cytotoxicity against five human cancer cell lines, A375, C32, SNB-19, MCF-7/WT and MCF-7/DX. Two of the active N-Mannich bases (compounds 5 and 6) were further evaluated for growth inhibition effects in melanoma (A375 and C32), and normal (HaCaT) cell lines using clonogenic assay and a population doubling time test. The apoptosis was determined with the neutral version of comet assay. The confocal microscopy method enabled the visualization of F-actin reorganization. The obtained results demonstrated that compounds 5 and 6 have cytotoxic and proapoptotic effects on melanoma cells and are capable of inducing F-actin depolarization in a dose-dependent manner. Moreover, computational chemistry approaches, molecular docking and electrostatic potential were employed to study non-covalent interactions of the investigated compounds with four receptors. It was found that all the examined molecules exhibit a similar binding affinity with respect to the chosen reference drugs.
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13
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Dalberto D, Alves J, Garcia ALH, de Souza MR, Abella AP, Thiesen FV, Salvador M, Santos Branco CD, Marroni N, Bona S, Schemitt E, Da Silva FR, Da Silva J. Exposure in the tobacco fields: Genetic damage and oxidative stress in tobacco farmers occupationally exposed during harvest and grading seasons. MUTATION RESEARCH. GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2022; 878:503485. [PMID: 35649679 DOI: 10.1016/j.mrgentox.2022.503485] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 04/11/2022] [Accepted: 04/14/2022] [Indexed: 06/15/2023]
Abstract
Agricultural workers engaged in tobacco cultivation are constantly exposed to large amounts of harmful agents, such as pesticides and nicotine. Furthermore, most of the flue-cured tobacco leaves are manually graded exposing workers to agents such as tobacco-specific nitrosamines. This study aimed to evaluate genetic damage and oxidative stress in tobacco farmers occupationally exposed during the harvest and grading seasons. We obtained data on DNA damage detected in Comet assay in blood cells and micronucleus experiment with buccal cells from 241 individuals. The serum cotinine levels and nitrates were also evaluated. The Comet Assay results showed a showed an increased visual score for males and females during harvest time and tobacco grading. An increase of micronucleated and binucleated cells was observed in the grading group compared to the control and harvest groups. The oxidative stress measurements showed a clear increase of thiobarbituric acid reactive substances (TBARS) in tobacco farmers during harvest time, and trolox equivalent antioxidant capacity (TEAC) in individuals during harvest and grading time compared to the controls. Significant increases of the cotinine levels were observed during the harvest and grading period (harvest>grading), and nitrates for the grading period compared to the control. In this study, tobacco farmers presented compromised DNA integrity associated with enhanced oxidative stress levels.
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Affiliation(s)
- Daiana Dalberto
- Laboratory of Genetic Toxicology, PPGBioSaúde, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil
| | - Jodel Alves
- Laboratory of Genetic Toxicology, PPGBioSaúde, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil
| | - Ana Letícia Hilário Garcia
- Laboratory of Genetic Toxicology, PPGBioSaúde, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil; Laboratory of Genetic Toxicology, PPGSDH, La Salle University (UniLaSalle), Canoas, RS, Brazil
| | - Melissa Rosa de Souza
- Laboratory of Genetic Toxicology, PPGBioSaúde, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil
| | - Angélica Pich Abella
- Laboratory of Genetic Toxicology, PPGBioSaúde, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil
| | - Flávia V Thiesen
- Toxicology Institute, Catholic Pontificial University of Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
| | - Mirian Salvador
- Biotechnology Institute, University of Caxias do Sul, Caxias do Sul (UCS), RS, Brazil
| | | | - Norma Marroni
- PPG Biological Sciences - Physiology and PPG Medicine - Medical Sciences at UFRGS, Porto Alegre, RS, Brazil; Laboratory of Pneumological Sciences and Inflammation - Hospital de Clínicas de Porto Alegre, RS, Brazil
| | - Silvia Bona
- PPG Biological Sciences - Physiology and PPG Medicine - Medical Sciences at UFRGS, Porto Alegre, RS, Brazil
| | - Elizangela Schemitt
- PPG Biological Sciences - Physiology and PPG Medicine - Medical Sciences at UFRGS, Porto Alegre, RS, Brazil
| | | | - Juliana Da Silva
- Laboratory of Genetic Toxicology, PPGBioSaúde, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil; Laboratory of Genetic Toxicology, PPGSDH, La Salle University (UniLaSalle), Canoas, RS, Brazil.
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Lupin Protein Concentrate as a Novel Functional Food Additive That Can Reduce Colitis-Induced Inflammation and Oxidative Stress. Nutrients 2022; 14:nu14102102. [PMID: 35631241 PMCID: PMC9143369 DOI: 10.3390/nu14102102] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 05/13/2022] [Accepted: 05/16/2022] [Indexed: 01/27/2023] Open
Abstract
Food fortification with bioactive compounds may constitute a way to ameliorate inflammatory bowel diseases (IBDs). Lupin seeds contain an oligomer named deflamin that can reduce IBD’s symptoms via MMP-9 inhibition. Here, our goal was to develop a lupin protein concentrate (LPC) enriched in deflamin and to test its application as a food additive to be used as a functional food against colitis. The nutritional profile of the LPC was evaluated, and its efficacy in vivo was tested, either alone or as added to wheat cookies. The LPC presented high protein and carbohydrate contents (20.09 g/100 g and 62.05/100 g, respectively), as well as antioxidant activity (FRAP: 351.19 mg AAE/10 mg and DPPH: 273.9 mg AAE/10 mg). It was also effective against TNBS-induced colitis in a dose dependent-manner, reducing DAI scores by more than 50% and concomitantly inhibiting MMP-9 activity. When added to cookies, the LPC activities were maintained after baking, and a 4-day diet with LPC cookies induced a significant protective effect against acetic acid-induced colitis, overall bringing lesions, oxidative stress and DNA damage levels to values significantly similar to controls (p < 0.001). The results show that the LPC is an efficient way to deliver deflamin in IBD-targeted diets.
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15
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da Silva JF, Corrêa DS, Campos ÉL, Leite GZ, de Oliveira JDM, Fachini J, da Silva J, Obach ES, Campo LF, Grivicich I, de Amorim HLN, Picada JN. Evaluation of toxicological aspects of three new benzoxazole compounds with sunscreen photophysical properties using in silico and in vitro methods. Toxicol In Vitro 2021; 79:105300. [PMID: 34933087 DOI: 10.1016/j.tiv.2021.105300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 11/23/2021] [Accepted: 12/11/2021] [Indexed: 11/18/2022]
Abstract
Sunscreening chemicals protect against damage caused by sunlight most absorbing UVA or UVB radiations. In this sense, 2-(2'-hydroxyphenyl)benzoxazole derivatives with amino substituents in the 4' and 5' positions have an outstandingly high Sun Protection Factor and adequate photostability, but their toxicity is not yet known. This study aimed to evaluate the toxicity of three synthetic 2-(2'-hydroxyphenyl)benzoxazole derivatives for their possible application as sunscreens. In silico tools were used in order to assess potential risks regarding mutagenic, carcinogenic, and skin sensitizing potential. Bioassays were performed in L929 cells to assess cytotoxicity in MTT assay and genotoxic activities in the Comet assay and micronucleus test. Also, the Salmonella/microsome assay was performed to evaluate gene mutations. The in silico predictions indicate a low risk of mutagenicity and carcinogenicity of the compounds while the skin sensitizing potential was low or inconclusive. The 2-(4'-amino-2'-hydroxyphenyl)benzoxazol compound was the most cytotoxic and genotoxic among the compounds evaluated in L929 cells, but none induced mutations in the Salmonella/microsome assay. The amino substituted at the 4' position of the phenyl ring appears to have greater toxicological risks than substituents at the 5' position of 2-(phenyl)benzoxazole. The findings warrant further studies of these compounds in cosmetic formulations.
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Affiliation(s)
- Jâmeson Ferreira da Silva
- Laboratório de Genética Toxicológica, Universidade Luterana do Brasil (ULBRA), Av. Farroupilha, 8001, CEP: 92425-900 Canoas, RS, Brazil; Centro de Pesquisa em Produto e Desenvolvimento (CEPPED), Universidade Luterana do Brasil (ULBRA), Av. Farroupilha, 8001, CEP: 92425-900 Canoas, RS, Brazil
| | - Dione Silva Corrêa
- Centro de Pesquisa em Produto e Desenvolvimento (CEPPED), Universidade Luterana do Brasil (ULBRA), Av. Farroupilha, 8001, CEP: 92425-900 Canoas, RS, Brazil
| | - Érico Leite Campos
- Laboratório de Genética Toxicológica, Universidade Luterana do Brasil (ULBRA), Av. Farroupilha, 8001, CEP: 92425-900 Canoas, RS, Brazil; Centro de Pesquisa em Produto e Desenvolvimento (CEPPED), Universidade Luterana do Brasil (ULBRA), Av. Farroupilha, 8001, CEP: 92425-900 Canoas, RS, Brazil
| | - Giovana Zamprônio Leite
- Laboratório de Genética Toxicológica, Universidade Luterana do Brasil (ULBRA), Av. Farroupilha, 8001, CEP: 92425-900 Canoas, RS, Brazil; Centro de Pesquisa em Produto e Desenvolvimento (CEPPED), Universidade Luterana do Brasil (ULBRA), Av. Farroupilha, 8001, CEP: 92425-900 Canoas, RS, Brazil
| | - João Denis Medeiros de Oliveira
- Laboratório de Genética Toxicológica, Universidade Luterana do Brasil (ULBRA), Av. Farroupilha, 8001, CEP: 92425-900 Canoas, RS, Brazil
| | - Jean Fachini
- Laboratório de Genética Toxicológica, Universidade Luterana do Brasil (ULBRA), Av. Farroupilha, 8001, CEP: 92425-900 Canoas, RS, Brazil
| | - Juliana da Silva
- Laboratório de Genética Toxicológica, Universidade Luterana do Brasil (ULBRA), Av. Farroupilha, 8001, CEP: 92425-900 Canoas, RS, Brazil; Laboratório de Genetica Toxicológica, Universidade La Salle, Av. Victor Barreto, 2288, CEP: 92010-000 Canoas, RS, Brazil
| | - Eliane Sempé Obach
- Laboratório de Tecnologia Farmacêutica, Universidade Luterana do Brasil (ULBRA), Av. Farroupilha, 8001, CEP: 92425-900 Canoas, RS, Brazil
| | - Leandra Franciscato Campo
- Laboratório de Novos Materiais Orgânicos e Quimica Forense, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, CEP: 90650-001 Porto Alegre, RS, Brazil
| | - Ivana Grivicich
- Laboratório de Biologia do Câncer, Universidade Luterana do Brasil (ULBRA), Farroupilha Avenue 8001, CEP: 92425-900 Canoas, RS, Brazil
| | | | - Jaqueline Nascimento Picada
- Laboratório de Genética Toxicológica, Universidade Luterana do Brasil (ULBRA), Av. Farroupilha, 8001, CEP: 92425-900 Canoas, RS, Brazil; Laboratório de Novos Materiais Orgânicos e Quimica Forense, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, CEP: 90650-001 Porto Alegre, RS, Brazil.
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16
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Palma TV, Bianchin NB, de Oliveira JS, Assmann CE, das Neves Oliveira M, Schetinger MRC, Morsch VM, Ulrich H, Pillat MM, de Andrade CM. Berberine increases the expression of cytokines and proteins linked to apoptosis in human melanoma cells. Mol Biol Rep 2021; 49:2037-2046. [PMID: 34860319 DOI: 10.1007/s11033-021-07022-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 11/25/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND Melanoma is the most lethal form of skin cancer, and its incidence has increased considerably in the last decades. Melanoma presents difficult treatment with strong resistance of tumor cells, due to its extremely invasive nature with high capacity to metastases. Berberine (BBR), an isoquinoline alkaloid, is a molecule found in several medicinal plants, and has been studied in several diseases, demonstrating antimicrobial, antidiabetic and anti-inflammatory properties and anti-tumorigenic effects. METHODS AND RESULTS In SK-MEL-28 cells, 50 μM BBR treatment for 24 h decreased cell viability by 50 percent. This concentration generated cell death both by early apoptosis and necrosis, with an increase in the DNA damage index. BBR increased (*p < 0.05) the proportion of cells in G1/G0 phase and decreased (###p < 0.005) the percentage of cells in S phase. The alcaloid increased (****p < 0.001) ROS production compared to untreated controls with an increase in activated caspase 3 and phosphorylated p53 protein levels. In addition, BBR significantly enhanced ERK as well as both pro- and anti-inflammatory cytokine expression compared to untreated controls. CONCLUSIONS BBR has important antiproliferative effects and may be alone or in adjunct therapy a promising candidate for melanoma treatment, a cancer with great incidence and high lethality.
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Affiliation(s)
- Taís Vidal Palma
- Department of Chemistry, Center for Natural and Exact Sciences, Postgraduate Program in Biological Sciences: Biochemistry Toxicological, Federal University of Santa Maria, Santa Maria, RS, Brazil.
| | - Nathiele Botari Bianchin
- Department of Chemistry, Center for Natural and Exact Sciences, Postgraduate Program in Biological Sciences: Biochemistry Toxicological, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Juliana Sorraila de Oliveira
- Department of Chemistry, Center for Natural and Exact Sciences, Postgraduate Program in Biological Sciences: Biochemistry Toxicological, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Charles Elias Assmann
- Department of Chemistry, Center for Natural and Exact Sciences, Postgraduate Program in Biological Sciences: Biochemistry Toxicological, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | | | - Maria Rosa Chitolina Schetinger
- Department of Chemistry, Center for Natural and Exact Sciences, Postgraduate Program in Biological Sciences: Biochemistry Toxicological, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Vera Maria Morsch
- Department of Chemistry, Center for Natural and Exact Sciences, Postgraduate Program in Biological Sciences: Biochemistry Toxicological, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Henning Ulrich
- Department of Biochemistry, Institute of Chemistry, University of São Paulo, São Paulo, SP, Brazil
| | - Micheli Mainardi Pillat
- Department of Microbiology and Parasitology, Postgraduate Program in Pharmacology and Postgraduate Program in Pharmaceutical Sciences, Federal University of Santa Maria, Santa Maria, RS, Brazil.
| | - Cinthia Melazzo de Andrade
- Department of Chemistry, Center for Natural and Exact Sciences, Postgraduate Program in Biological Sciences: Biochemistry Toxicological, Federal University of Santa Maria, Santa Maria, RS, Brazil.
- Department of Small Animal Clinic, Center of Rural Sciences, Federal University of Santa Maria-RS, Room 121, Veterinary Hospital Building, Avenue Roraima n° 1000, Santa Maria, RS, 97105900, Brazil.
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17
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Pinto LC, Mesquita FP, Barreto LH, Souza PFN, Ramos INF, Pinto AVU, Soares BM, da Silva MN, Burbano RMR, Montenegro RC. Anticancer potential of limonoids from Swietenia macrophylla: Genotoxic, antiproliferative and proapoptotic effects towards human colorectal cancer. Life Sci 2021; 285:119949. [PMID: 34543640 DOI: 10.1016/j.lfs.2021.119949] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 09/01/2021] [Accepted: 09/06/2021] [Indexed: 12/24/2022]
Abstract
AIMS Swietenia macrophylla have been considered for the treatment of various diseases, including anticancer activity. This study aimed to investigate the anticancer activity of S. macrophylla leaves extract and its isolated compound towards human colorectal cancer cell line. MAIN METHODS Hexanic extract of S. macrophylla leaves demonstrated relevant cytotoxicity only against colon cancer cell line HCT116. KEY FINDINGS Our results showed significant DNA damage and apoptosis after treatment with the hexanic extract of S. macrophylla. Moreover, no toxicity was noticed for the animal model. The isolated compound limonoid L1 showed potent cytotoxicity against cancer cell lines with IC50 at 55.87 μg mL-1. Limonoid L1 did not trigger any cell membrane rupture in the mice erythrocytes suggesting no toxicity. The antiproliferative effect of L1 was confirmed in colorectal cancer cells by clonogenic assay, inducing G2/M arrest, apoptosis, and DNA damage in cancer-type cells. SIGNIFICANCE L1 reduced BCL2 and increased ATM, CHK2, TP53, ARF, CDK1, CDKN1A, and CASP3 in the colorectal cancer cell line. These findings suggest that limonoid L1 isolated from S. macrophylla can be a promising anticancer agent in managing colorectal cancer.
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Affiliation(s)
- Laine C Pinto
- Laboratory of Experimental Neuropathology, Biological Science Institute, Federal University of Pará, Mundurucus street, 4487, Guamá, Belém, Brazil
| | - Felipe P Mesquita
- Laboratory of Pharmacogenetics, Drug Research and Development Center (NPDM), Federal University of Ceará, Cel. Nunes de Melo, 1000, Rodolfo Teófilo, Fortaleza, Brazil
| | - Leilane H Barreto
- Laboratory of Human Cytogenetics, Biological Science Institute, Federal University of Pará, Augusto Correa Avenue, 01, Guamá, Belém, Brazil
| | - Pedro F N Souza
- Collaborating professor of Biochemistry and Molecular Biology Graduate Program at the Department of Biochemistry and Molecular Biology, Federal University of Ceará
| | - Ingryd N F Ramos
- Laboratory of Human Cytogenetics, Biological Science Institute, Federal University of Pará, Augusto Correa Avenue, 01, Guamá, Belém, Brazil
| | - Adrielly V U Pinto
- Laboratory of Human Cytogenetics, Biological Science Institute, Federal University of Pará, Augusto Correa Avenue, 01, Guamá, Belém, Brazil
| | - Bruno M Soares
- Laboratory of Human Cytogenetics, Biological Science Institute, Federal University of Pará, Augusto Correa Avenue, 01, Guamá, Belém, Brazil
| | - Milton N da Silva
- Laboratory of Liquid Chromatography, Institute of Exact and Natural Sciences, Federal University of Pará, Augusto Correa Avenue, 01, Guamá, Belém, Brazil
| | - Rommel M R Burbano
- Laboratory of Human Cytogenetics, Biological Science Institute, Federal University of Pará, Augusto Correa Avenue, 01, Guamá, Belém, Brazil
| | - Raquel C Montenegro
- Laboratory of Pharmacogenetics, Drug Research and Development Center (NPDM), Federal University of Ceará, Cel. Nunes de Melo, 1000, Rodolfo Teófilo, Fortaleza, Brazil.
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Brito VB, Nascimento LVM, Moura DJ, Saffi J. Cardioprotective Effect of Maternal Supplementation with Resveratrol on Toxicity Induced by Doxorubicin in Offspring Cardiomyocytes. Arq Bras Cardiol 2021; 117:1147-1158. [PMID: 34644787 PMCID: PMC8757151 DOI: 10.36660/abc.20200752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 01/27/2021] [Indexed: 11/28/2022] Open
Abstract
Fundamento A doxorrubicina (DOX) é frequentemente usada para tratar muitos tipos de cânceres, apesar da cardiotoxicidade dose-dependente. Como alternativa, o resveratrol é um polifenol que tem demonstrado efeitos cardioprotetores em vários modelos de disfunção cardíaca. Objetivo Este estudo investigou se o tratamento com resveratrol em ratas gestantes protege contra toxicidade induzida por doxorrubicina em cardiomiócitos da ninhada. Métodos Ratas Wistar (n-8) receberam sresveratrol como suplemento alimentar durante a gestação. No nascimento da ninhada, os corações (9-11) foram usados para se obter a cultura primária de cardiomiócitos. A cardiotoxicidade induzida por DOX e os efeitos da suplementação com resveratrol foram avaliados por marcadores de stress oxidativo, tais como oxidação da diclorofluoresceína diacetato, diminuição da atividade de enzimas antioxidantes, e oxidação do teor total de grupos sulfidrila, além da avaliação da viabilidade celular, geração de danos ao DNA, bem como a resposta de reparo aos danos ao DNA. Um valor de p <0,05 foi considerado estatisticamente significativo. Resultados Os cardiomiócitos de neonatos de ratas que receberam suplemento resveratrol apresentaram um aumento (p <0,01) na viabilidade das células, e diminuição (p <0,0001) de células apoptóticas/necróticas após o tratamento com DOX, o que está correlacionado às atividades de enzimas antioxidantes e produção de diclorofluoresceína. Além disso, o resveratrol protegeu os cardiomiócitos de danos ao DNA induzidos por DOX, apresentando uma diminuição (p <0,05) nas quebras de DNA induzidas por stress oxidativo, avaliadas pela atividade de enzimas reparadoras do DNA endonuclease III e formamidopirimidina glicosilase. A suplementação com resveratrol aumentou (p <0,05) a expressão da proteína reparadora Sirt6 nos cardiomiócitos dos filhotes. Conclusão Essa pesquisa indica que a suplementação com resveratrol durante o período gestacional tem um efeito cardioprotetor no coração da ninhada contra a toxicidade induzida por DOX, o que pode se dever a sua função antioxidante, e o aumento na resposta de danos ao DNA.
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Affiliation(s)
- Verônica Bidinotto Brito
- Universidade Federal de Ciências da Saúde de Porto Alegre , Porto Alegre , RS - Brasil.,Faculdades Integradas de Taquara , Taquara , RS - Brasil
| | | | | | - Jenifer Saffi
- Universidade Federal de Ciências da Saúde de Porto Alegre , Porto Alegre , RS - Brasil
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19
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Da Correggio KS, Silveira SK, May Feuerschuette OH, Maraslis FT, Pinheiro K, Machado MJ, Maluf SW, Casimiro Onofre AS. DNA damage analysis in newborns and their mothers related to pregnancy and delivery characteristics. Placenta 2021; 115:139-145. [PMID: 34624566 DOI: 10.1016/j.placenta.2021.09.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 08/09/2021] [Accepted: 09/24/2021] [Indexed: 11/18/2022]
Abstract
INTRODUCTION Increased DNA damage is associated with early events in carcinogenesis. The foetus may be more susceptible to effects of environment by transplacental exposure. We aimed to evaluate DNA damage in cells from umbilical cord (arteries and vein) and maternal blood from pregnant women. METHODS Fifty eight pregnant women and their offspring were included in this study. They were submitted to an interview to obtain information about personal history, clinical history, and lifestyle habits. Other Information was obtained from medical records. The samples were prepared for Single Cell Gel/Comet assay and Cytokinesis-block Micronucleus Cytome (CBMN-Cyt) assay. RESULTS Correlation between DNA damage frequency by Comet assay from newborns and their mothers was statistically significant and was significantly associated with nulliparity and more than 1 h of second stage of labour (umbilical vein and maternal blood). A positive MNi relationship was noticed for age (mother's blood) and inappropriate birth weight for gestational age (maternal blood). When multivariate statistical analyses were applied to measure the degree of association between variables that influenced DNA damage markers in the first evaluation, inadequate birth weight and pregnant weight gain were associated with MNi frequency in maternal and newborns blood, respectively. DISCUSSION Significant associations between DNA damage in newborns and pregnant women, and birth and pregnancy events suggest molecular evidence of transplacental genotoxic effects. However, a potentially increased risk of degenerative diseases, such as cancers, in this population should be carefully investigated by further prospective cohort studies.
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Affiliation(s)
- Karine Souza Da Correggio
- Division of Tocogynecology, University Hospital Polydoro Ernani de São Thiago, Federal University of Santa Catarina, Florianopolis, SC, Brazil
| | - Sheila Koettker Silveira
- Division of Tocogynecology, University Hospital Polydoro Ernani de São Thiago, Federal University of Santa Catarina, Florianopolis, SC, Brazil
| | - Otto Henrique May Feuerschuette
- Division of Tocogynecology, University Hospital Polydoro Ernani de São Thiago, Federal University of Santa Catarina, Florianopolis, SC, Brazil
| | - Flora Troina Maraslis
- Citogenetics and Genomic Stability Laboratory, University Hospital Polydoro Ernani de São Thiago, Federal University of Santa Catarina, Florianopolis, SC, Brazil
| | - Kamylla Pinheiro
- Citogenetics and Genomic Stability Laboratory, University Hospital Polydoro Ernani de São Thiago, Federal University of Santa Catarina, Florianopolis, SC, Brazil
| | - Marcos José Machado
- Clinical Analysis Department, Federal University of Santa Catarina, Florianopolis, SC, Brazil
| | - Sharbel Weidner Maluf
- Citogenetics and Genomic Stability Laboratory, University Hospital Polydoro Ernani de São Thiago, Federal University of Santa Catarina, Florianopolis, SC, Brazil.
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20
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Faverzani JL, Steinmetz A, Deon M, Marchetti DP, Guerreiro G, Sitta A, de Moura Coelho D, Lopes FF, Nascimento LVM, Steffens L, Henn JG, Ferro MB, Brito VB, Wajner M, Moura DJ, Vargas CR. L-carnitine protects DNA oxidative damage induced by phenylalanine and its keto acid derivatives in neural cells: a possible pathomechanism and adjuvant therapy for brain injury in phenylketonuria. Metab Brain Dis 2021; 36:1957-1968. [PMID: 34216350 DOI: 10.1007/s11011-021-00780-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 06/07/2021] [Indexed: 11/24/2022]
Abstract
Although phenylalanine (Phe) is known to be neurotoxic in phenylketonuria (PKU), its exact pathogenetic mechanisms of brain damage are still poorly known. Furthermore, much less is known about the role of the Phe derivatives phenylacetic (PAA), phenyllactic (PLA) and phenylpyruvic (PPA) acids that also accumulate in this this disorder on PKU neuropathology. Previous in vitro and in vivo studies have shown that Phe elicits oxidative stress in brain of rodents and that this deleterious process also occurs in peripheral tissues of phenylketonuric patients. In the present study, we investigated whether Phe and its derivatives PAA, PLA and PPA separately or in combination could induce reactive oxygen species (ROS) formation and provoke DNA damage in C6 glial cells. We also tested the role of L-carnitine (L-car), which has been recently considered an antioxidant agent and easily cross the blood brain barrier on the alterations of C6 redox status provoked by Phe and its metabolites. We first observed that cell viability was not changed by Phe and its metabolites. Furthermore, Phe, PAA, PLA and PPA, at concentrations found in plasma of PKU patients, provoked marked DNA damage in the glial cells separately and when combined. Of note, these effects were totally prevented (Phe, PAA and PPA) or attenuated (PLA) by L-car pre-treatment. In addition, a potent ROS formation also induced by Phe and PAA, whereas only moderate increases of ROS were caused by PPA and PLA. Pre-treatment with L-car also prevented Phe- and PAA-induced ROS generation, but not that provoked by PLA and PPA. Thus, our data show that Phe and its major metabolites accumulated in PKU provoke extensive DNA damage in glial cells probably by ROS formation and that L-car may potentially represent an adjuvant therapeutic agent in PKU treatment.
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Affiliation(s)
- Jéssica Lamberty Faverzani
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
- Serviço de Genética Médica, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil.
| | - Aline Steinmetz
- Laboratório de Genética Toxicológica, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Brazil
| | - Marion Deon
- Serviço de Genética Médica, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | - Desirèe Padilha Marchetti
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Gilian Guerreiro
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Serviço de Genética Médica, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | - Angela Sitta
- Serviço de Genética Médica, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | | | - Franciele Fatima Lopes
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Serviço de Genética Médica, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | | | - Luiza Steffens
- Laboratório de Genética Toxicológica, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Brazil
| | - Jeferson Gustavo Henn
- Laboratório de Genética Toxicológica, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Brazil
| | - Matheus Bernardes Ferro
- Laboratório de Genética Toxicológica, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Brazil
| | - Verônica Bidinotto Brito
- Laboratório de Genética Toxicológica, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Brazil
- Departamento de Fisioterapia, Faculdades Integradas de Taquara (FACCAT), Taquara, Brazil
| | - Moacir Wajner
- Serviço de Genética Médica, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Dinara Jaqueline Moura
- Laboratório de Genética Toxicológica, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Brazil
| | - Carmen Regla Vargas
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
- Serviço de Genética Médica, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil.
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
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21
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Gonçalves NDS, Mello TMSPD, Mizuno CS, Haider S, Santos RAD. Cis-trimethoxystilbene, exhibits higher genotoxic and antiproliferative effects than its isomer trans-trimethoxystilbene in MCF-7 and MCF-10A cell lines. Genet Mol Biol 2021; 44:e20200477. [PMID: 34555143 PMCID: PMC8459827 DOI: 10.1590/1678-4685-gmb-2020-0477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 06/28/2021] [Indexed: 11/22/2022] Open
Abstract
Stilbenes are a class of natural compounds with a wide variety of biological effects, such as antitumor activity. The best-known stilbene is resveratrol, whose clinical application is limited due to its low bioavailability. Methoxylated derivatives of this stilbene, including cis-trimethoxystilbene (cis-TMS) and trans-trimethoxystilbene (trans-TMS) have demonstrated more pronounced cytotoxic and anti-proliferative effects than resveratrol. Thus, the objective of this study is to evaluate and compare the cytotoxicity and antiproliferative effects of cis- and trans-TMS in MCF-7 and its normal counterpart MCF-10A. Both compounds were cytotoxic, genotoxic, and induced G2-M accumulation and cell death in the two cell lines. These results suggested that the genotoxicity of cis- and trans-TMS is involved in the reduction of cellular proliferation of MCF-7 and MCF-10A cells, but notably, such antiproliferative effects are more pronounced for cis- than trans-TMS.
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Affiliation(s)
| | | | - Cássia Suemi Mizuno
- University of New England, Westbrook College of Health Professions, School of Pharmacy, Department of Pharmaceutical and Social Administrative Sciences, Portland, ME, USA
| | - Saqlain Haider
- University of Mississippi, School of Pharmacy, National Center for Natural Products Research, MS, USA
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22
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Weis GCC, Assmann CE, Mostardeiro VB, Alves ADO, da Rosa JR, Pillat MM, de Andrade CM, Schetinger MRC, Morsch VMM, da Cruz IBM, Costabeber IH. Chlorpyrifos pesticide promotes oxidative stress and increases inflammatory states in BV-2 microglial cells: A role in neuroinflammation. CHEMOSPHERE 2021; 278:130417. [PMID: 33839396 DOI: 10.1016/j.chemosphere.2021.130417] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 01/20/2021] [Accepted: 03/24/2021] [Indexed: 06/12/2023]
Abstract
The exposure to environmental stressors, such as organophosphate (OP) pesticides, has been associated with the development of neurodegenerative diseases. Chlorpyrifos (CPF) is the worldwide most used OP pesticide and one of the most hazardous pesticides as it can cross the blood-brain barrier. Since studies evaluating the effects of CPF on brain immune cells are scarce, this research investigated the oxidative and inflammatory responses of CPF exposure in murine microglial cells. BV-2 cells were exposed to different concentrations of CPF pesticide (0.3-300 μM). CPF induced activation of microglial cells, confirmed by Iba-1 and CD11b marking, and promoted microglial proliferation and cell cycle arrest at S phase. Moreover, CPF exposure increased oxidative stress production (NO, MDA, and O2∙), and upregulated pro-inflammatory cytokines (IL-1β and NLRP3) genes expression in BV-2 cells. Overall, data showed that CPF exposure, at the lowest concentrations, acted by promoting pro-oxidative and pro-inflammatory states in microglial cells. These results provide important information on the potential role of microglial activation in CPF-induced neuroinflammation and add to the expanding knowledge on the neurotoxicity of OP.
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Affiliation(s)
| | - Charles Elias Assmann
- Department of Biochemistry and Molecular Biology, Federal University of Santa Maria, Santa Maria, RS, Brazil.
| | | | - Audrei de Oliveira Alves
- Department of Physiology and Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil.
| | - Jéssica Righi da Rosa
- Department of Food Science and Technology, Federal University of Santa Maria, Santa Maria, RS, Brazil.
| | - Micheli Mainardi Pillat
- Department of Microbiology and Parasitology, Federal University of Santa Maria, Santa Maria, RS, Brazil.
| | - Cinthia Melazzo de Andrade
- Department of Biochemistry and Molecular Biology, Federal University of Santa Maria, Santa Maria, RS, Brazil.
| | | | - Vera Maria Melchiors Morsch
- Department of Biochemistry and Molecular Biology, Federal University of Santa Maria, Santa Maria, RS, Brazil.
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23
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Silva Dos Santos M, Lobo MM, Amaral SS, Zanatta N, Viau CM, Saffi J. A novel 1-((3-(2-toluyl)-4,5-dihydroisoxazol-5-yl)methyl)-4-(trifluoromethyl)pyrimidin-2(1H)-one activates intrinsic mitochondria-dependent pathway and decreases angiogenesis in PC-3 cells. Eur J Pharmacol 2021; 899:174028. [PMID: 33727055 DOI: 10.1016/j.ejphar.2021.174028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 03/08/2021] [Accepted: 03/11/2021] [Indexed: 11/27/2022]
Abstract
Prostate cancer is among the most common cancer diagnoses in men, and the best treatment for patients with metastatic disease in advanced stages is still unclear. Previously, we have demonstrated that the three 1-(3-(aryl-4,5-dihydroisoxazol-5-yl)methyl)-4-trihalomethyl-1H-pyrimidin-2- ones derivatives (8a, 8e and 9c) present important cytotoxicity and selectivity for tumoral cells. Considering that various cytotoxic drugs have been assessed in patients with prostate cancer, but few drugs show survival advantage, we decided to study these three compounds (8a, 8e and 9c) in prostate cancer cells, androgen receptor (AR)-positive 22Rv-1 and AR-negative PC-3 cells. We obtained the half maximal inhibitory concentration (IC50) of 8a, 8e and 9c in prostate cancer cells and based on high selectivity of 9c to PC-3 cells, we determined the mechanism of this compound to induce cell death through different methods. We show here that 9c compound induces cell cycle arrest in G2/M, increasing the levels of reactive oxygen species and DNA damage, and triggers DNA damage response by ataxia-telangiectasia mutated (ATM) and histone H2AX phosphorylation induction. The compound also led PC-3 to lipid peroxidation and mitochondrial depolarization which triggered the activation of intrinsic pathway, confirmed by increase of cleaved caspase-9 and 3. In this work we also show the ability of 9c in reducing vascular endothelial growth factor expression (VEGF) and inhibiting topoisomerase I enzyme, therefore indicating a potential new molecule to be further investigated for prostate cancer management.
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Affiliation(s)
- Marcela Silva Dos Santos
- Department of Basic Health Sciences, Laboratory of Genetic Toxicology, Federal University of Health Sciences of Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil
| | - Marcio Marçal Lobo
- Chemical Core Heterocycles (NUQUIMHE), Chemistry Department, Federal University of Santa Maria, Santa Maria (UFSM), RS, Brazil
| | - Simone Schneider Amaral
- Department of Pharmacosciences, Federal University of Health Sciences of Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil
| | - Nilo Zanatta
- Chemical Core Heterocycles (NUQUIMHE), Chemistry Department, Federal University of Santa Maria, Santa Maria (UFSM), RS, Brazil
| | - Cassiana Macagnan Viau
- Department of Basic Health Sciences, Laboratory of Genetic Toxicology, Federal University of Health Sciences of Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil.
| | - Jenifer Saffi
- Department of Basic Health Sciences, Laboratory of Genetic Toxicology, Federal University of Health Sciences of Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil.
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24
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Ceschi-Bertoli L, Vidal FAP, Balsamo PJ, Abdalla FC. Comet assay protocol for Bombus atratus fat body and pericardial cells (Hymenoptera, bombini) at a safe concentration of mercury. CHEMOSPHERE 2020; 261:127752. [PMID: 32731026 DOI: 10.1016/j.chemosphere.2020.127752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 07/14/2020] [Accepted: 07/16/2020] [Indexed: 06/11/2023]
Abstract
The decline of the Bombus population is closely related to the presence of environmental pollutants. Among these pollutants, trace metals represent a major concern, which includes mercury, a known genotoxic substance. The induction of genotoxicity may be demonstrated by the comet assay (a.k.a. single-cell gel electrophoresis), a simple and sensitive method for DNA damage estimating. The current work provided, for the first time, a protocol of comet assay for Bombus atratus using mercury as a standard chemical at safe concentrations according to the Environment National Council of Brazil, and the World Health Organization. Bees were collected and divided into three groups (n = 11 each), in which the exposed groups received a 0.2 ppb or a 1 ppb of mercury solution, and the control group received water. The bioassay was performed for 48 h at controlled temperature and humidity conditions, according to the OECD guideline toxicological test method for B. terrestris. The samples were stained with different dyes to observe the efficacy of each one. Variations of parameters in methodology, such as concentration and time of exposure to lysis solution as well as the electrophoretic process, allowed the observation of comets at different levels. DAPI and acridine orange presented an unstable fluorescence, and silver nitrate dye was more effective. Therefore, the comet assay was shown to be an effective method to evaluate genotoxic effects in bees. The obtained results may be helpful for the establishment of a suitable protocol for future genotoxicity assessment in neotropical bees using different doses of xenobiotics.
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Affiliation(s)
- Letícia Ceschi-Bertoli
- Postgraduate Program in Biotechnology and Environmental Monitoring, Federal University of São Carlos, UFSCar, Sorocaba, Brazil; Department of Biology, Laboratory of Structural and Functional Biology (LABEF), Federal University of São Carlos, UFSCar, Sorocaba, SP, Brazil
| | - Felipe Augusto Pinto Vidal
- Postgraduate Program in Biotechnology and Environmental Monitoring, Federal University of São Carlos, UFSCar, Sorocaba, Brazil; Department of Biology, Laboratory of Structural and Functional Biology (LABEF), Federal University of São Carlos, UFSCar, Sorocaba, SP, Brazil
| | - Paulo José Balsamo
- Postgraduate Program in Biotechnology and Environmental Monitoring, Federal University of São Carlos, UFSCar, Sorocaba, Brazil; Department of Biology, Laboratory of Structural and Functional Biology (LABEF), Federal University of São Carlos, UFSCar, Sorocaba, SP, Brazil
| | - Fábio Camargo Abdalla
- Postgraduate Program in Biotechnology and Environmental Monitoring, Federal University of São Carlos, UFSCar, Sorocaba, Brazil; Department of Biology, Laboratory of Structural and Functional Biology (LABEF), Federal University of São Carlos, UFSCar, Sorocaba, SP, Brazil.
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25
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Szlasa W, Supplitt S, Drąg-Zalesińska M, Przystupski D, Kotowski K, Szewczyk A, Kasperkiewicz P, Saczko J, Kulbacka J. Effects of curcumin based PDT on the viability and the organization of actin in melanotic (A375) and amelanotic melanoma (C32) - in vitro studies. Biomed Pharmacother 2020; 132:110883. [PMID: 33113417 DOI: 10.1016/j.biopha.2020.110883] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 10/05/2020] [Accepted: 10/12/2020] [Indexed: 12/16/2022] Open
Abstract
Curcumin is a turmeric, antioxidative compound, well-known of its anti-cancer properties. Nowadays more and more effort is made in the field of enhancing the efficiency of the anticancer therapies. Combining the photoactive properties of curcumin with the superficial localization of melanoma and photodynamic therapy (PDT) seems to be a promising treatment method. The research focused on the evaluation of the curcumin effectiveness as an anticancer therapeutic agent in the in vitro treatment of melanotic (A375) and amelanotic (C32) melanoma cell lines. Keratinocytes (HaCat) and fibroblasts (HGF) were used to assess the impact of the therapy on the skin tissue. The aim of the study was to investigate the cell death after exposure to light irradiation after preincubation with curcumin. Additionaly the authors analized the interactions between curcumin and the actin cytoskeleton. The cytotoxic effect initiated by curcumin and increased by irradiation confirm the usefulness of the flavonoid in the PDT approach. Depending on curcumin concentration and incubation time, melanoma cells survival rate ranged from: 93.68 % (C32 cell line, 10 μM, 24 h) and 83.47 % (A375 cell line, 10 μM, 24 h) to 8.98 % (C32 cell line, 50 μM, 48 h) and 12.42 % (A375 cell line, 50 μM, 48 h). Moreover, photodynamic therapy with curcumin increased the number of apoptotic and necrotic cells in comparison to incubation with curcumin without irradiation. The study demonstrated that PDT induced caspase-3 overexpression and DNA cleavage in the studied cell lines. The cells revealed decreased proliferation after the therapy due to the actin cytoskeleton rearrangement. Although effective, the therapy remains not selective towards melanoma cells.
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Affiliation(s)
- Wojciech Szlasa
- Faculty of Medicine, Wroclaw Medical University, Wroclaw, Poland
| | | | | | - Dawid Przystupski
- Department of Paediatric Bone Marrow Transplantation, Oncology and Haematology, Wroclaw Medical University, Wroclaw, Poland; Department of Molecular and Cellular Biology, Faculty of Pharmacy, Wroclaw, Poland
| | | | - Anna Szewczyk
- Department of Molecular and Cellular Biology, Faculty of Pharmacy, Wroclaw Medical University, Wroclaw, Poland; Department of Animal Developmental Biology, Institute of Experimental Biology, University of Wroclaw, Wroclaw, Poland
| | - Paulina Kasperkiewicz
- Department of Chemical Biology and Bioimaging, Faculty of Chemistry, Wroclaw University of Science and Technology, Wroclaw, Poland
| | - Jolanta Saczko
- Department of Molecular and Cellular Biology, Faculty of Pharmacy, Wroclaw Medical University, Wroclaw, Poland
| | - Julita Kulbacka
- Department of Molecular and Cellular Biology, Faculty of Pharmacy, Wroclaw Medical University, Wroclaw, Poland.
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26
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Etomidate is devoid of genotoxicty and mutagenicity in human lymphocytes and in the Salmonella typhimurium/microsomal activation test. Toxicol In Vitro 2020; 68:104946. [DOI: 10.1016/j.tiv.2020.104946] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 07/06/2020] [Accepted: 07/10/2020] [Indexed: 02/07/2023]
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Öztürk AE, Bodu M, Bucak MN, Ağır V, Özcan A, Keskin N, İli P, Topraggaleh TR, Sidal H, Başpınar N, Dursun Ş. The synergistic effect of trehalose and low concentrations of cryoprotectants can improve post-thaw ram sperm parameters. Cryobiology 2020; 95:157-163. [DOI: 10.1016/j.cryobiol.2020.03.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 03/26/2020] [Accepted: 03/27/2020] [Indexed: 10/24/2022]
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Kaminski TFA, Dalla Lana DF, Quintana LD, Schmitt EG, Kaminski TA, Paula FR, Fuentefria AM, Machado MM, Souza de Oliveira LF. Fumonisin B 1 induces toxicity in human leukocytes at low concentrations: Are computational studies effective to determine biosafety? Toxicon 2020; 182:7-12. [PMID: 32376361 DOI: 10.1016/j.toxicon.2020.04.100] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 04/14/2020] [Accepted: 04/24/2020] [Indexed: 11/19/2022]
Abstract
Fumonisin B1 is a mycotoxin produced by Fusarium verticillioides and Fusarium proliferatum found in various crops, particularly maize. Besides carcinogenicity, other manifestations have been registered in different animals and in humans. In the case of humans, epidemiological studies have reported high prevalence of esophageal cancer in populations exposed to fumonisins. This study aimed to evaluate the minimum concentration of FB1 capable of inducing cytotoxicity (cell viability test), genotoxicity (comet assay) and mutagenicity (micronucleus) in cultured human leukocytes and to evaluate the effectiveness of in silico tests to predict FB1 toxicity. All concentrations analyzed (200; 100; 50; 5; 0.5; 0.05; 0.005 μg/mL and 300; 30; 3; 1; 0.1; 0.01 fg/mL) except the lowest demonstrated dose-dependent toxicity in all parameters analyzed (p < 0.05 to p < 0.0001). As for predictions, only the Lazar software showed carcinogenicity of FB1 for rats. Thus, it is evident that FB1 is able to induce dose-dependent damage at low concentrations, and that computational tests, although desirable for prediction, are not effective as biological tests to determine toxicity, at least of FB 1 and within the experimental conditions tested.
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Affiliation(s)
| | - Daiane Flores Dalla Lana
- Programa de Pós-Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brazil
| | | | | | | | - Favero Reisdorfer Paula
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Pampa, Uruguaiana, RS, Brazil
| | | | - Michel Mansur Machado
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Pampa, Uruguaiana, RS, Brazil
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Castilhos LG, Oliveira JS, Adefegha SA, Manzoni AG, Passos DF, Assmann CE, Silveira LL, Trelles KB, Kronbauer M, Doleski PH, Bremm JM, Braun J, Abdalla FH, Gonçalves JF, Andrade CM, Cruz IBM, Burger ME, Leal DBR. Uncaria tomentosa improves cognition, memory and learning in middle-aged rats. Exp Gerontol 2020; 138:111016. [PMID: 32628974 DOI: 10.1016/j.exger.2020.111016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 06/10/2020] [Accepted: 06/23/2020] [Indexed: 10/23/2022]
Abstract
Aging accelerates neurodegeneration, while natural and safe neuroprotective agents, such as Uncaria tomentosa, may help to overcome this problem. This study assessed the effects of U. tomentosa extract treatment on the aging process in the brain of Wistar rats. The spatial memory and learning, acetylcholinesterase (AChE) activity, and DNA damage were assessed. Animals of 14 months were tested with different doses of U. tomentosa (5 mg/kg, 15 mg/kg, and 30 mg/kg) and with different durations of treatment (one month and one year). In the Morris Water Maze (MWM), the escape latency was significantly (p < 0.0001) shorter in rats that received 5 mg/kg, 15 mg/kg, and 30 mg/kg of U. tomentosa for both one month and one year of treatment. There was a significant difference in time spent at the platform zone (p < 0.05) of the middle-aged rats treated with U. tomentosa extract for one year when compared to the control rats. The cortex and hippocampus of rats treated with U. tomentosa for one year showed significant (p > 0.05) reduction in AChE activity. DNA damage index on cortex was significantly lower (p < 0.05) in animals treated with 30 mg/kg of U. tomentosa for one month while all the tested doses demonstrated significant (p < 0.001) reductions in DNA damage index in animals treated for one year. In conclusion, U. tomentosa may represent a source of phytochemicals that could enhance memory activity, repair DNA damage, and alter AChE activity, thereby providing neuroprotection during the aging process.
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Affiliation(s)
- Lívia G Castilhos
- Departamento de Microbiologia e Parasitologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Av. Roraima, 97105-900 Santa Maria, RS, Brazil; Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Av. Roraima, 97105-900 Santa Maria, RS, Brazil
| | - Juliana S Oliveira
- Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Av. Roraima, 97105-900 Santa Maria, RS, Brazil
| | - Stephen A Adefegha
- Departamento de Microbiologia e Parasitologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Av. Roraima, 97105-900 Santa Maria, RS, Brazil; Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Av. Roraima, 97105-900 Santa Maria, RS, Brazil; Department of Biochemistry, Federal University of Technology, P. M. B. 704, Akure, Nigeria
| | - Alessandra G Manzoni
- Departamento de Microbiologia e Parasitologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Av. Roraima, 97105-900 Santa Maria, RS, Brazil
| | - Daniela F Passos
- Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Av. Roraima, 97105-900 Santa Maria, RS, Brazil
| | - Charles E Assmann
- Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Av. Roraima, 97105-900 Santa Maria, RS, Brazil
| | - Leonardo L Silveira
- Departamento de Microbiologia e Parasitologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Av. Roraima, 97105-900 Santa Maria, RS, Brazil
| | - Kelly B Trelles
- Departamento de Microbiologia e Parasitologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Av. Roraima, 97105-900 Santa Maria, RS, Brazil; Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Av. Roraima, 97105-900 Santa Maria, RS, Brazil
| | - Maikel Kronbauer
- Programa de Pós-Graduação em Farmacologia, Universidade Federal de Santa Maria, Santa Maria 97105-900, RS, Brazil
| | - Pedro H Doleski
- Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Av. Roraima, 97105-900 Santa Maria, RS, Brazil
| | - João M Bremm
- Departamento de Microbiologia e Parasitologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Av. Roraima, 97105-900 Santa Maria, RS, Brazil
| | - Josiane Braun
- Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Av. Roraima, 97105-900 Santa Maria, RS, Brazil
| | - Fatima H Abdalla
- Departamento de Microbiologia e Parasitologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Av. Roraima, 97105-900 Santa Maria, RS, Brazil; Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Av. Roraima, 97105-900 Santa Maria, RS, Brazil
| | - Jamile F Gonçalves
- Departamento de Microbiologia e Parasitologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Av. Roraima, 97105-900 Santa Maria, RS, Brazil
| | - Cinthia M Andrade
- Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Av. Roraima, 97105-900 Santa Maria, RS, Brazil
| | - Ivana B M Cruz
- Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Av. Roraima, 97105-900 Santa Maria, RS, Brazil
| | - Marilise E Burger
- Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Av. Roraima, 97105-900 Santa Maria, RS, Brazil; Programa de Pós-Graduação em Farmacologia, Universidade Federal de Santa Maria, Santa Maria 97105-900, RS, Brazil
| | - Daniela B R Leal
- Departamento de Microbiologia e Parasitologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Av. Roraima, 97105-900 Santa Maria, RS, Brazil; Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Av. Roraima, 97105-900 Santa Maria, RS, Brazil.
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Vilchez-Aruani J, Cuello-Carrión FD, Valdez SR, Nadin SB. Genomic effects of a nanostructured alumina insecticide in human peripheral blood lymphocytes in vitro. Heliyon 2020; 6:e04216. [PMID: 32577576 PMCID: PMC7305400 DOI: 10.1016/j.heliyon.2020.e04216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 02/11/2020] [Accepted: 06/11/2020] [Indexed: 11/30/2022] Open
Abstract
Nanotechnology is providing new tools for precision agriculture, such as agrochemical agents and innovative delivery mechanisms to improve cropping efficiency. Powder nanoinsecticides, such as experimental nanostructured alumina (NSA), show great potential for sustainable agriculture as an alternative to conventional synthetic pesticides because their mechanism of insecticide action is based on physical rather than on biochemical phenomena. However, even in highly non-reactive and hardly soluble substances such as alumina, reduced particle size may lead to an increased toxicity of the material. In order to determine whether NSA induces DNA and chromosomal damage, its toxicity was assessed in human peripheral blood lymphocytes (PBL) and contrasted with commercial nanostructured alumina, natural insecticide powders and a conventional pesticide. PBL from healthy donors were exposed for 24 h to increasing concentrations (50, 100 and 200 μg/mL) of NSA particle agglomerates (<350 nm); positive and negative NSA-particles, respectively; bulk Al2O3 (4.5 μm) or Diatomaceous Earth (SiO2, <4.5 μm). Alkaline comet assay and micronuclei (MNi) test were used to assess DNA damage and chromosomal breakage, respectively. Cell viability was tested with resazurin assay. Comet assay results revealed no significant increase in DNA damage by NSA compared to other natural substances. As expected, DNA breaks were significantly higher in cells exposed to an organophosphate [OPP] control (P < 0.05). No statistically significant differences were found in terms of cellular viability at 50 and 100 μg/mL of NSA but cell survival decreased at 200 μg/mL as well as in OPP group. Positively charged NSA particles significantly reduced cell viability and increased DNA migration and oxidative DNA damage (8-oxoG). NSA as well as the electrically charged NSA particles had no significant effect on MNi induction. Our results indicate that NSA particles are non-cytotoxic and non-genotoxic at the tested doses and do not cause obvious DNA damage in human PBL in vitro.
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Affiliation(s)
- Juan Vilchez-Aruani
- Laboratorio de Biología Tumoral, Instituto de Medicina y Biología Experimental de Cuyo (IMBECU), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Centro Científico Tecnológico (CCT) Mendoza, Argentina
| | | | - Susana R Valdez
- Laboratorio de Reproducción y Lactancia, IMBECU, CONICET, CCT Mendoza, Argentina.,Universidad Nacional de Cuyo, Facultad de Ciencias Exactas y Naturales, Mendoza, Argentina
| | - Silvina B Nadin
- Laboratorio de Biología Tumoral, Instituto de Medicina y Biología Experimental de Cuyo (IMBECU), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Centro Científico Tecnológico (CCT) Mendoza, Argentina.,Universidad Nacional de Cuyo, Mendoza, Argentina
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da Silva JCG, Dallegrave E, Rodrigues GZP, Bigolin C, Neumann TMSDO, Schuster AC, Kayser JM, Staudt LBM, Moraes MF, Farias DG, Schiling G, Raasch JR, Perassolo MS, da Silva LB, Gehlen G, Betti AH. Repeated dose of meloxicam induces genotoxicity and histopathological changes in cardiac tissue of mice. Drug Chem Toxicol 2020; 45:822-833. [PMID: 32552192 DOI: 10.1080/01480545.2020.1778018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Meloxicam is the non-steroidal anti-inflammatory drug most used in small animals; however, studies on genotoxicity, oxidative stress, and histopathologic alterations in cardiac tissue are limited, especially at therapeutical doses used in these animals. This study evaluated the toxic effects caused by the treatment involving repeated low at higher doses of meloxicam in mice, by genotoxicity, oxidative stress, and histopathological parameters. Mice (CF1, male) received, by gavage, meloxicam at the therapeutic dose indicated for small animals (0.1 mg/kg) and at higher doses (0.5 and 1 mg/kg) for 28 days. Later, they were euthanized for blood and organ analysis. Oxidative stress was analyzed by the plasma ferric reduction capacity (FRAP) and catalase, and genotoxicity, by the comet assay and the micronucleus test. Heart, liver, lung, and kidney tissues were analyzed by the histology, and stomach and duodenum were analyzed with a magnifying glass. The relative weight of organs did not present significant alterations. However, congestion of duodenum vessels was observed at the three tested doses and caused hyperemia of stomach mucosa at 1 mg/kg. In the heart histology there was a reduction in the number of cardiomyocytes, accompanied by an increase in cell diameter (possible cell hypertrophy) dose-dependent. The highest tested dose of meloxicam also increased the DNA damage index, without alterations in the micronucleus test. Meloxicam did not affect the catalase activity but increased the FRAP (1 mg/kg). Meloxicam at the dose prescribed for small animals could potentially cause cardiac histopathologic alterations and genotoxic effects.
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Affiliation(s)
| | - Eliane Dallegrave
- Toxicology Department, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil
| | | | - Cassiana Bigolin
- Bioanalysis Department, Institute of Health Sciences, Feevale University, Novo Hamburgo, Rio Grande do Sul, Brazil
| | | | - Andriéli Carolina Schuster
- Bioanalysis Department, Institute of Health Sciences, Feevale University, Novo Hamburgo, Rio Grande do Sul, Brazil
| | - Juliana Machado Kayser
- Bioanalysis Department, Institute of Health Sciences, Feevale University, Novo Hamburgo, Rio Grande do Sul, Brazil
| | | | - Melina Floriano Moraes
- Bioanalysis Department, Institute of Health Sciences, Feevale University, Novo Hamburgo, Rio Grande do Sul, Brazil
| | - Débora Graziela Farias
- Bioanalysis Department, Institute of Health Sciences, Feevale University, Novo Hamburgo, Rio Grande do Sul, Brazil
| | - Gabriela Schiling
- Bioanalysis Department, Institute of Health Sciences, Feevale University, Novo Hamburgo, Rio Grande do Sul, Brazil
| | - Juliana Raquel Raasch
- Bioanalysis Department, Institute of Health Sciences, Feevale University, Novo Hamburgo, Rio Grande do Sul, Brazil
| | - Magda Susana Perassolo
- Bioanalysis Department, Institute of Health Sciences, Feevale University, Novo Hamburgo, Rio Grande do Sul, Brazil
| | - Luciano Basso da Silva
- Bioanalysis Department, Institute of Health Sciences, Feevale University, Novo Hamburgo, Rio Grande do Sul, Brazil
| | - Günther Gehlen
- Bioanalysis Department, Institute of Health Sciences, Feevale University, Novo Hamburgo, Rio Grande do Sul, Brazil
| | - Andresa Heemann Betti
- Bioanalysis Department, Institute of Health Sciences, Feevale University, Novo Hamburgo, Rio Grande do Sul, Brazil
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Maluf SW, Wilhelm Filho D, Parisotto EB, Medeiros GDSD, Pereira CHJ, Maraslis FT, Dornelles Schoeller CC, Rosa JSD, Fröde TS. DNA damage, oxidative stress, and inflammation in children with celiac disease. Genet Mol Biol 2020; 43:e20180390. [PMID: 32555942 PMCID: PMC7288666 DOI: 10.1590/1678-4685-gmb-2018-0390] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Accepted: 07/12/2019] [Indexed: 02/07/2023] Open
Abstract
The objective of this study was to evaluate the level of genomic instability in patients with celiac disease and to establish a relationship between inflammation, oxidative stress, and DNA damage in these patients. Myeloperoxidase (MPO) activity, adenosine deaminase, nitric oxide (NOx), thiobarbituric acid, catalase (CAT), superoxide dismutase (SOD), glutathione peroxidase (GPx), and DNA damage were evaluated in peripheral blood samples from 47 celiac disease patients and 31 controls. Patients with celiac disease presented higher levels of DNA damage in comparison to controls (p=0.023). This difference was also observed for markers of oxidative stress, such as CAT (p=0.011) and SOD (p=0.013), and inflammatory markers such as MPO (p < 0.001) and NOx (p=0.009). Positive correlations were found between DNA damage levels and the values of CAT (r=0.405; p=0.009) and SOD (r=0.516; p < 0.001). Positive correlations were also found between GPx and NOx (r=0.349; p=0.030) and MPO and NOx (r=0.239; p=0.039). CAT and NOx showed a negative correlation (r= −0.315; p=0.042). In conclusion, intestinal inflammation can have systemic effects, causing an imbalance between oxidant and antioxidant markers, which may promote increased levels of DNA damage.
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Affiliation(s)
- Sharbel Weidner Maluf
- Universidade Federal de Santa Catarina, Hospital Universitário, Laboratório de Genética, Florianópolis, SC, Brazil
| | - Danilo Wilhelm Filho
- Universidade Federal de Santa Catarina, Departamento de Ecologia e Zoologia, Florianópolis, SC, Brazil
| | - Eduardo Benedetti Parisotto
- Universidade Federal de Mato Grosso do Sul, Faculdade de Ciências Farmacêuticas, Alimentos e Nutrição, Campo Grande, MS, Brazil
| | | | | | - Flora Troina Maraslis
- Universidade Federal de Santa Catarina, Hospital Universitário, Laboratório de Genética, Florianópolis, SC, Brazil
| | | | - Julia Savan da Rosa
- Universidade Federal de Santa Catarina, Centro de Ciências de Saúde, Departamento de Análises Clínicas, Florianópolis, SC, Brazil
| | - Tânia Silvia Fröde
- Universidade Federal de Santa Catarina, Centro de Ciências de Saúde, Departamento de Análises Clínicas, Florianópolis, SC, Brazil
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de Souza Celente G, Colares GS, da Silva Araújo P, Machado ÊL, Lobo EA. Acute ecotoxicity and genotoxicity assessment of two wastewater treatment units. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:10520-10527. [PMID: 31940141 DOI: 10.1007/s11356-019-07308-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 12/05/2019] [Indexed: 06/10/2023]
Abstract
Water contamination by discharge of untreated or poorly treated wastewater into water bodies is a current issue that may cause harm to humans. Water quality assessment targets general parameters, which often misleads to underestimation of their implication in the environment. Acute and genotoxicity assays using Daphnia magna is a reliable tool for testing deleterious effects of wastewater exposure. This paper aimed at evaluating acute ecotoxicity as well as genotoxicity of a biological treatment system composed by an anaerobic bioreactor (AR), algal turf scrubber (ATS), followed by two downflow constructed wetlands (CW). The university's wastewater treatment plant (WWTP) composed by an equalization tank (ET), an upflow anaerobic sludge blanket (UASB), followed by an aerobic bioreactor (AB) was also assessed for acute and genotoxicity. Our results showed the acute ecotoxicity ranged from moderately to extremely toxic, and from nontoxic to moderately toxic for ET and AB. For AR, most samples were moderately toxic. The outflow from ATS and CW's tanks completely eliminated acute toxicity and genotoxicity evidencing that the proposed system combining ATS and vertical CWs is suitable for treating sanitary wastewater.
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Affiliation(s)
- Gleison de Souza Celente
- Environmental Technology, University of Santa Cruz do Sul (UNISC), Avenida Independência, 2293, Santa Cruz do Sul, Rio Grande do Sul, 96815-900, Brazil.
| | - Gustavo Stolzenberg Colares
- Environmental Technology, University of Santa Cruz do Sul (UNISC), Avenida Independência, 2293, Santa Cruz do Sul, Rio Grande do Sul, 96815-900, Brazil
| | | | - Ênio Leandro Machado
- Environmental Technology Program (Master and Doctoral courses), University of Santa Cruz do Sul (UNISC), Santa Cruz do Sul, Brazil
| | - Eduardo Alexis Lobo
- Environmental Technology Program (Master and Doctoral courses), University of Santa Cruz do Sul (UNISC), Santa Cruz do Sul, Brazil
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Bernieri T, Moraes MF, Ardenghi PG, Basso da Silva L. Assessment of DNA damage and cholinesterase activity in soybean farmers in southern Brazil: High versus low pesticide exposure. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2019; 55:355-360. [PMID: 31868080 DOI: 10.1080/03601234.2019.1704608] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
The aim of this study was to evaluate the DNA damage in soybean growers during two agricultural periods of a crop season (high and low exposure) and a control group, as well as butyrylcholinesterase (BChE) activity during these exposure periods in order to estimate the degree of BChE inhibition for the exposed group. DNA damage in peripheral whole blood was evaluated by the comet assay and plasma BChE activity was accessed as a measure of exposure to cholinesterase inhibitors. None of the soybean growers reported using full Personal Protective Equipment (PPE). BChE was lower in high exposure period than in low exposure period and DNA damage index was significantly increased in the high exposure period than in the low exposure period. In addition, DNA damage in both exposure periods was higher than control group. No correlation was found between exposure time and DNA damage and BChE activity. However, negative correlation was observed between DNA damage in high and low exposure periods. The results indicate that soybean growers are exposed to cholinesterase inhibitors and to pesticides mixtures with genotoxic potential.
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Affiliation(s)
- Tanandra Bernieri
- Health Sciences Institute, Feevale University, Novo Hamburgo, Rio Grande do Sul, Brazil
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Wyse ATS, Sanches EF, Dos Santos TM, Siebert C, Kolling J, Netto CA. Chronic mild hyperhomocysteinemia induces anxiety-like symptoms, aversive memory deficits and hippocampus atrophy in adult rats: New insights into physiopathological mechanisms. Brain Res 2019; 1728:146592. [PMID: 31816318 DOI: 10.1016/j.brainres.2019.146592] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 11/29/2019] [Accepted: 12/04/2019] [Indexed: 02/06/2023]
Abstract
In the last decade, increased homocysteine levels have been implicated as a risk factor for neurodegenerative and psychiatric disorders. We have developed an experimental model of chronic mild hyperhomocysteinemia (HHcy) in order to observe metabolic impairments in the brain of adult rodents. Besides its known effects on brain metabolism, the present study sought to investigate whether chronic mild HHcy could induce learning/memory impairments associated with biochemical and histological damage to the hippocampus. Adult male Wistar rats received daily subcutaneous injections of homocysteine (0.03 μmol/g of body weight) twice a day, from the 30th to the 60th day of life or saline solution (Controls). After injections, anxiety-like and memory tests were performed. Following behavioral analyses, brains were sliced and hippocampal volumes assessed and homogenized for redox state assessment, antioxidant activity, mitochondrial functioning (chain respiratory enzymes and ATP levels) and DNA damage analyses. Behavioral analyses showed that chronic mild HHcy may induce anxiety-like behavior and impair long-term aversive memory (24 h) that was evaluated by inhibitory avoidance task. Mild HHcy decreased locomotor and/or exploratory activities in elevated plus maze test and caused hippocampal atrophy. Decrease in cytochrome c oxidase, DNA damage and redox state changes were also observed in hippocampus of adult rats subjected to mild HHcy. Our findings show that chronic mild HHcy alters biochemical and histological parameters in the hippocampus, leading to behavioral impairments. These findings might be considered in future studies aiming to search for alternative strategies for treating the behavioral impairments in patients with mild elevations in homocysteine levels.
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Affiliation(s)
- A T S Wyse
- Biochemistry Department, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil; Post-Graduation Program of Biochemistry, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil.
| | - E F Sanches
- Biochemistry Department, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil; Post-Graduation Program of Biochemistry, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - T M Dos Santos
- Biochemistry Department, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil; Post-Graduation Program of Biochemistry, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - C Siebert
- Biochemistry Department, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil; Post-Graduation Program of Biochemistry, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - J Kolling
- Biochemistry Department, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - C A Netto
- Biochemistry Department, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil; Post-Graduation Program of Biochemistry, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
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Cavalcanti BC, de Andrade Neto JB, de Sousa Silva AA, Barreto FS, de Oliveira Ferreira JR, da Silva CR, Aires do Nascimento FBS, do Amaral Valente Sá LG, Magalhães HIF, Nobre Júnior HV, de Moraes MO. Evaluation of Genotoxicity and Mutagenicity of Ketamine on Human Peripheral Blood Leukocytes and in Salmonella typhimurium. Toxicol In Vitro 2019; 62:104718. [PMID: 31706955 DOI: 10.1016/j.tiv.2019.104718] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 08/23/2019] [Accepted: 11/06/2019] [Indexed: 01/02/2023]
Abstract
Ketamine is a potent uncompetitive NMDA receptor antagonist that provides amnesia, analgesia, environmental dissociation and immobility, where it has its cytotoxic effect well described in the literature. However, the work on its genotoxic/mutagenic potentials are scarce and insufficient and does not allow a reasonable evaluation of its role. Thus, in the present work, we decided to evaluate the genotoxic and mutagenic effects of ketamine on human peripheral blood leukocytes (PBLs) and Salmonella typhimurium (TA98, TA97a, TA100, and TA102) through several well-established experimental protocols based on different parameters in the presence or not of exogenous metabolizing S9 fraction. Our data revealed that ketamine induces a weak cytotoxic effect on human PBLs after 24 h and is devoided of hemolytic effects. A small amount of DNA strand breaks levels were detected in the modified comet assay (employment of FPG enzyme) only at highest concentrations (500 and 700 μg/mL) of ketamine, highlighting our pro-oxidant data regarding ketamine. However, the oxidative DNA lesions were almost completely repaired which reflects in the lack of mutagenesis (micronuclei and chromosomal aberrations) on human PBLs and no increases in revertants numbers on S. typhimurium/microsome test (500 to 5000 μg/plate). In summary, ketamine is a weak oxidative DNA damaging agent and is devoid of mutagenic properties on eukaryotic and prokaryotic models.
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Affiliation(s)
- Bruno Coêlho Cavalcanti
- Department of Physiology and Pharmacology, Federal University of Ceara, Fortaleza, CE, Brazil; Drug Research and Development Center, Federal University of Ceara, Fortaleza, CE, Brazil.
| | - João Batista de Andrade Neto
- School of Pharmacy, Laboratory of Bioprospection in Antimicrobial Molecules (LABIMAN), Federal University of Ceara, Fortaleza, CE, Brazil; Christus University Center (UNICHRISTUS), Fortaleza, CE, Brazil; Drug Research and Development Center, Federal University of Ceara, Fortaleza, CE, Brazil
| | | | | | | | - Cecília Rocha da Silva
- School of Pharmacy, Laboratory of Bioprospection in Antimicrobial Molecules (LABIMAN), Federal University of Ceara, Fortaleza, CE, Brazil; Drug Research and Development Center, Federal University of Ceara, Fortaleza, CE, Brazil
| | - Francisca Bruna S Aires do Nascimento
- School of Pharmacy, Laboratory of Bioprospection in Antimicrobial Molecules (LABIMAN), Federal University of Ceara, Fortaleza, CE, Brazil; Drug Research and Development Center, Federal University of Ceara, Fortaleza, CE, Brazil
| | - Lívia Gurgel do Amaral Valente Sá
- School of Pharmacy, Laboratory of Bioprospection in Antimicrobial Molecules (LABIMAN), Federal University of Ceara, Fortaleza, CE, Brazil; Drug Research and Development Center, Federal University of Ceara, Fortaleza, CE, Brazil
| | | | - Hélio Vitoriano Nobre Júnior
- School of Pharmacy, Laboratory of Bioprospection in Antimicrobial Molecules (LABIMAN), Federal University of Ceara, Fortaleza, CE, Brazil; Drug Research and Development Center, Federal University of Ceara, Fortaleza, CE, Brazil
| | - Manoel Odorico de Moraes
- Department of Physiology and Pharmacology, Federal University of Ceara, Fortaleza, CE, Brazil; Drug Research and Development Center, Federal University of Ceara, Fortaleza, CE, Brazil
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Saccol RDSP, da Silveira KL, Manzoni AG, Abdalla FH, de Oliveira JS, Dornelles GL, Barbisan F, Passos DF, Casali EA, de Andrade CM, da Cruz IBM, Leal DBR. Antioxidant, hepatoprotective, genoprotective, and cytoprotective effects of quercetin in a murine model of arthritis. J Cell Biochem 2019; 121:2792-2801. [PMID: 31691375 DOI: 10.1002/jcb.29502] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Accepted: 10/08/2019] [Indexed: 12/11/2022]
Abstract
Rheumatoid arthritis is a highly debilitating inflammatory autoimmune disease which is characterized by joint destruction. The present study sought to investigate the effect of quercetin in rats with complete Freund's adjuvant-induced arthritis. Animals were divided into control/saline, control/quercetin (5 mg/kg, 25 mg/kg, and 50 mg/kg) arthritis/saline, and arthritis/quercetin (5 mg/kg, 25 mg/kg, and 50 mg/kg); the treatments were administered for 45 days. Biochemical, oxidative stress, genotoxicity, and cytotoxicity parameters were evaluated. All doses of quercetin reduced the levels of aspartate aminotransferase, thiobarbituric acid-reactive substances, and reactive oxygen species; however, only treatment with 25 or 50 mg/kg increased catalase activity. Total thiol and reduced glutathione levels were not significantly affected by the induction nor by the treatments. Genotoxicity assessed by DNA damage, and cytotoxicity through picogreen assay, decreased after treatments with quercetin. Our results present evidence of the antioxidant, cytoprotective, genoprotective and hepatoprotective, and effects of quercetin, demonstrating its potential as a candidate for coadjuvant therapy.
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Affiliation(s)
- Renata da Silva Pereira Saccol
- Programa de Pós-Graduação em Ciências Farmacêuticas, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil.,Laboratório de Imunobiologia Experimental e Aplicada, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil
| | - Karine Lanes da Silveira
- Programa de Pós-Graduação em Ciências Farmacêuticas, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil.,Laboratório de Imunobiologia Experimental e Aplicada, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil
| | - Alessandra Guedes Manzoni
- Laboratório de Imunobiologia Experimental e Aplicada, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil.,Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil
| | - Fátima Husein Abdalla
- Laboratório de Imunobiologia Experimental e Aplicada, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil
| | - Juliana Sorraila de Oliveira
- Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil
| | - Guilherme Lopes Dornelles
- Programa de Pós-Graduação em Medicina Veterinária, Centro de Ciências Rurais, Departamento de Pequenos Animais, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil
| | - Fernanda Barbisan
- Programa de Pós-Graduação em Gerontologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil.,Laboratório de Biogenômica, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil
| | - Daniela Ferreira Passos
- Laboratório de Imunobiologia Experimental e Aplicada, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil.,Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil
| | - Emerson André Casali
- Departamento de Ciências Morfológicas, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, RS, Brasil
| | - Cinthia Melazzo de Andrade
- Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil.,Programa de Pós-Graduação em Medicina Veterinária, Centro de Ciências Rurais, Departamento de Pequenos Animais, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil
| | - Ivana Beatrice Mânica da Cruz
- Programa de Pós-Graduação em Gerontologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil.,Laboratório de Biogenômica, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil
| | - Daniela Bitencourt Rosa Leal
- Programa de Pós-Graduação em Ciências Farmacêuticas, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil.,Laboratório de Imunobiologia Experimental e Aplicada, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil.,Programa de Pós-Graduação em Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil
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The Val16Ala-SOD2 polymorphism affects cyto-genotoxicity of pyridostigmine bromide on human peripheral blood mononuclear cells. Toxicol In Vitro 2019; 60:237-244. [DOI: 10.1016/j.tiv.2019.06.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 05/30/2019] [Accepted: 06/04/2019] [Indexed: 12/18/2022]
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Przystupski D, Górska A, Rozborska P, Bartosik W, Michel O, Rossowska J, Szewczyk A, Drąg-Zalesińska M, Kasperkiewicz P, Górski J, Kulbacka J. The Cytoprotective Role of Antioxidants in Mammalian Cells Under Rapidly Varying UV Conditions During Stratospheric Balloon Campaign. Front Pharmacol 2019; 10:851. [PMID: 31427965 PMCID: PMC6687761 DOI: 10.3389/fphar.2019.00851] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Accepted: 07/03/2019] [Indexed: 12/24/2022] Open
Abstract
The current age of dynamic development of the space industry brings the mankind closer to routine manned space flights and space tourism. This progress leads to a demand for intensive astrobiological research aimed at improving strategies of the pharmacological protection of the human cells against extreme conditions. Although routine research in space remains out of our reach, it is worth noticing that the unique severe environment of the Earth's stratosphere has been found to mimic subcosmic conditions, giving rise to the opportunity to use the stratospheric surface as a research model for the astrobiological studies. Our study included launching into the stratosphere a balloon containing mammalian normal and cancer cells treated with various compounds to examine whether these substances are capable of protecting the cells against stress caused by rapidly varying temperature, pressure, and radiation, especially UV. Owing to oxidative stress caused by irradiation and temperature shock, we used natural compounds which display antioxidant properties, namely, catechin isolated from green tea, honokiol derived from magnolia, curcumin from turmeric, and cinnamon extract. "After-flight" laboratory tests have shown the most active antioxidants as potential agents which can minimize harmful impact of extreme conditions on human cells.
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Affiliation(s)
| | - Agata Górska
- Department of Biological Sciences, Institute of Experimental Biology, University of Wroclaw, Wroclaw, Poland
| | - Paulina Rozborska
- Faculty of Chemistry, Wroclaw University of Science and Technology, Wroclaw, Poland
| | | | - Olga Michel
- Department of Medical Biochemistry, Wroclaw Medical University, Wroclaw, Poland
| | - Joanna Rossowska
- Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland
| | - Anna Szewczyk
- Department of Molecular and Cellular Biology, Wroclaw Medical University, Wroclaw, Poland
- Department of Animal Developmental Biology, Institute of Experimental Biology, University of Wroclaw, Wroclaw, Poland
| | | | - Paulina Kasperkiewicz
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wroclaw University of Science and Technology, Wroclaw, Poland
| | - Jędrzej Górski
- Faculty of Mechanical Engineering, Wroclaw University of Science and Technology, Wroclaw, Poland
| | - Julita Kulbacka
- Department of Molecular and Cellular Biology, Wroclaw Medical University, Wroclaw, Poland
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40
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Gandhi G, Sharma R, Kaur G. Traditional Indian sports - A case-control study on Kho Kho players investigating genomic instability and oxidative stress as a function of metabolic genotypes. Heliyon 2019; 5:e01928. [PMID: 31294102 PMCID: PMC6595184 DOI: 10.1016/j.heliyon.2019.e01928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 05/18/2019] [Accepted: 06/05/2019] [Indexed: 11/25/2022] Open
Abstract
The beneficial effects of physical exercise regularly for overall well being, or for recreational or professional purposes are widely accepted in clinical practice and have from time immemorial been the reasons for performing traditional sports. On the contrary, there is also evidence implying increased oxidative stress and genetic damage from intensive exercising. Depending on the intensity, time, frequency and characteristics of exercises, there can be differential induction of oxidative stress and provocation of oxidation of cellular macromolecules (including DNA) and cellular dysfunction which can likely accumulate with age, physical attributes and increase the susceptibility to disease on one hand, while stimulating cell signalling pathways leading to cell adaptation and improved resistance to stress, on the other. In order to observe if continuous sports activities as in Kho Kho increase oxidation capacity, which can also provoke oxidation of cellular macromolecules, the effects on oxidative/antioxidant changes and DNA damage in professional Kho Kho players modulated by individual genetic differences were assessed. Kho Kho, a traditional Indian game of ‘Tag’, is an all-time favourite which requires endurance, agility and strength. Healthy Kho Kho players (20.27 ± 0.28 y; sports age 6.78 ± 0.52 y) and controls (20.90 ± 0.45 y) were matched for age, gender, BMI, VO2 max (maximal oxygen uptake), frequency of GSTT1 (present/null), M1 (present/null), SOD2 (C199T) polymorphisms but differed for variant allele frequencies of GSTP1 (A313G) and SOD2 (C47T). Players compared to controls had significantly increased levels of DNA damage (1.8x, 44.66 ± 1.68 vs. 23.85 ± 1.79 μm, p = 0.000), lipid (MDA) peroxidation (2x, 1.72 ± 0.06 vs. 0.83 ± 0.16 μmol/l, p = 0.000) and total antioxidant capacity (1.09x, 1.69 ± 0.06 vs. 1.11 ± 0.03 mmol Trolox equivalent/l, p = 0.000) but with no differences for SOD activity (94.99 ± 2.42 vs. 93.36 ± 2.54 U/ml, p = 0.935). These results suggest that the players have increased genetic damage and oxidative stress probably from the intense physical activity in the absence of other exposure(s) as other attributes were comparable in the study group. The players may therefore be at increased risk for susceptibility to cancer, various diseases and precocious age-related changes and should be sensitized to health risks related to regular intensive physical exercise.
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Affiliation(s)
- Gursatej Gandhi
- Department of Human Genetics, Guru Nanak Dev University, Amritsar, 143 005, India
| | - R Sharma
- Department of Human Genetics, Guru Nanak Dev University, Amritsar, 143 005, India
| | - Gurpreet Kaur
- Department of Human Genetics, Guru Nanak Dev University, Amritsar, 143 005, India
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41
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Delgado CA, Balbueno Guerreiro GB, Diaz Jacques CE, de Moura Coelho D, Sitta A, Manfredini V, Wajner M, Vargas CR. Prevention by L-carnitine of DNA damage induced by 3-hydroxy-3-methylglutaric and 3-methylglutaric acids and experimental evidence of lipid and DNA damage in patients with 3-hydroxy-3-methylglutaric aciduria. Arch Biochem Biophys 2019; 668:16-22. [PMID: 31047871 DOI: 10.1016/j.abb.2019.04.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 04/25/2019] [Accepted: 04/27/2019] [Indexed: 12/13/2022]
Abstract
3-hydroxy-3-methylglutaric aciduria (HMGA) is an inherited disorder of the leucine catabolic pathway in which occurs a deficiency of the 3-hydroxy-3-methylglutaryl-CoA lyase enzyme. Therefore, the organic acids 3-hydroxy-3-methylglutaric (HMG) and 3-methylglutaric (MGA), mainly, accumulate in tissues of affected patients. Lately, much attention has been focused on free radicals as mediators of tissue damage in human diseases, causing lipid peroxidation, protein oxidation and DNA damage. The treatment of this disease is based in a restricted protein ingest and supplementation with l-carnitine (LC), an antioxidant and detoxifying agent. In the present work, we investigated the in vitro oxidative damage to DNA induced by the accumulation of organic acids and oxidative stress parameters in vivo of patients with 3-HMG, as well as the effect of the recommended therapy. The in vitro DNA damage was analyzed by the alkaline comet assay in leukocytes incubated with HMG and MGA (1 mM, 2.5 mM and 5 mM) and co-incubated with LC (90 μM and 150 μM). The in vivo urinary 15-F2t-isoprostane levels and urinary oxidized guanine species were measured by ELISA kits in patient's urine before and after the treatment with LC. HMG and MGA induced a DNA damage index (DI) significantly higher than that of the control group. The DI was significantly reduced in the presence of LC. It was also verified a significant increase of oxidized guanine species and urinary isoprostane levels, biomarker of oxidative DNA damage and lipid peroxidation respectively, in patients before treatment. After the treatment and supplementation with LC, patients presented significantly lower levels of those biomarkers. Analyzing the data together, we can conclude that HMGA patients present oxidative lipid and DNA damage, which is induced by HMG and MGA, and the antioxidant therapy with LC can prevent that kind of injuries.
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Affiliation(s)
- Camila Aguilar Delgado
- Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, UFRGS, Av. Ipiranga, 27522, CEP, 90610-000, Porto Alegre, RS, Brazil; Serviço de Genética Médica, HCPA, R.Ramiro Barcelos, 2350, CEP, 90035-003, Porto Alegre, RS, Brazil.
| | - Gilian Batista Balbueno Guerreiro
- Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, UFRGS, Av. Ipiranga, 27522, CEP, 90610-000, Porto Alegre, RS, Brazil; Serviço de Genética Médica, HCPA, R.Ramiro Barcelos, 2350, CEP, 90035-003, Porto Alegre, RS, Brazil
| | - Carlos Eduardo Diaz Jacques
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, UFRGS, R.Ramiro Barcelos, 2600, CEP, 90035-03, Porto Alegre, RS, Brazil; Serviço de Genética Médica, HCPA, R.Ramiro Barcelos, 2350, CEP, 90035-003, Porto Alegre, RS, Brazil
| | - Daniella de Moura Coelho
- Serviço de Genética Médica, HCPA, R.Ramiro Barcelos, 2350, CEP, 90035-003, Porto Alegre, RS, Brazil
| | - Angela Sitta
- Serviço de Genética Médica, HCPA, R.Ramiro Barcelos, 2350, CEP, 90035-003, Porto Alegre, RS, Brazil
| | - Vanusa Manfredini
- Programa de Pós-Graduação em Bioquímica, BR 427 Km 585, 118, Universidade Federal do Pampa, CEP, 97500-970, Uruguaiana, RS, Brazil
| | - Moacir Wajner
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, UFRGS, R.Ramiro Barcelos, 2600, CEP, 90035-03, Porto Alegre, RS, Brazil; Serviço de Genética Médica, HCPA, R.Ramiro Barcelos, 2350, CEP, 90035-003, Porto Alegre, RS, Brazil
| | - Carmen Regla Vargas
- Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, UFRGS, Av. Ipiranga, 27522, CEP, 90610-000, Porto Alegre, RS, Brazil; Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, UFRGS, R.Ramiro Barcelos, 2600, CEP, 90035-03, Porto Alegre, RS, Brazil; Serviço de Genética Médica, HCPA, R.Ramiro Barcelos, 2350, CEP, 90035-003, Porto Alegre, RS, Brazil.
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Dos Santos Laranjeira V, da Silva Brum LF, de Freitas LBR, Miri JM, Pinhatti VR, Fachini J, Tomazzoni L, Picada JN, Grivicich I. Carboxyethyl aminobutyric acid (CEGABA) lacks cytotoxicity and genotoxicity and stimulates cell proliferation and migration in vitro. Arch Dermatol Res 2019; 311:491-497. [PMID: 31087156 DOI: 10.1007/s00403-019-01927-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 04/12/2019] [Accepted: 05/02/2019] [Indexed: 05/30/2023]
Abstract
Cosmeceuticals are cosmetics formulated using compounds with medical-like benefits. Though the antiaging effect of carboxyethyl aminobutyric acid (CEGABA) has been discussed, its action mechanism in cosmeceuticals remains unclear. This study assessed the in vitro efficacy and safety of CEGABA. NHI-3T3 mouse fibroblast cell line was treated with two CEGABA concentrations (50 and 500 μmol/L) for 24 h, 48 h, and 72 h. Cytotoxicity and genotoxicity were evaluated by colorimetry (MTT) and the alkaline version of the comet assay, respectively. Flow cytometry and the scratch-wound assay were used to assess cell-cycle phase distributions and cell migration rates. Compared with the untreated control, CEGABA increased cell growth 1.6 times after 72 h, independent of dose. The compound also decreased cell replication time by 4 h. These findings seem to be related with the approximately 1.5-times increase in phase S cells numbers. Importantly, in vitro wound healing improved roughly 20% after treatment with CEGABA for 24 h and persisted after 48 h, indicating culture recovery. The time-dependent proliferation and migration of fibroblasts induced by CEGABA besides the fact that the compound is neither genotoxic nor cytotoxic makes it an ideal candidate in the development of cosmeceuticals in antiaging therapy.
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Affiliation(s)
- Vani Dos Santos Laranjeira
- Laboratório de Biologia do Câncer, Programa de Pós-Graduação em Biologia Celular e Molecular Aplicada à Saúde, Universidade Luterana do Brasil, ULBRA, Avenida Farroupilha, 8001, Prédio 22, 5º andar, Bairro São José, Canoas, RS, CEP 92425-900, Brazil.,Laboratório de Farmacologia e Toxicologia, Programa de Pós-Graduação em Biologia Celular e Molecular Aplicada à Saúde, Universidade Luterana do Brasil, Canoas, RS, Brazil
| | - Lucimar Filot da Silva Brum
- Laboratório de Farmacologia e Toxicologia, Programa de Pós-Graduação em Biologia Celular e Molecular Aplicada à Saúde, Universidade Luterana do Brasil, Canoas, RS, Brazil
| | - Laura Bainy Rodrigues de Freitas
- Laboratório de Biologia do Câncer, Programa de Pós-Graduação em Biologia Celular e Molecular Aplicada à Saúde, Universidade Luterana do Brasil, ULBRA, Avenida Farroupilha, 8001, Prédio 22, 5º andar, Bairro São José, Canoas, RS, CEP 92425-900, Brazil
| | - Jéssica Machado Miri
- Laboratório de Biologia do Câncer, Programa de Pós-Graduação em Biologia Celular e Molecular Aplicada à Saúde, Universidade Luterana do Brasil, ULBRA, Avenida Farroupilha, 8001, Prédio 22, 5º andar, Bairro São José, Canoas, RS, CEP 92425-900, Brazil
| | - Valéria Rodrigues Pinhatti
- Laboratório de Células-tronco e Engenharia de Tecidos, Programa de Pós-Graduação em Biologia Celular e Molecular Aplicada à Saúde, Universidade Luterana do Brasil, Canoas, RS, Brazil
| | - Jean Fachini
- Laboratório de Genética Toxicológica, Programa de Pós-Graduação em Biologia Celular e Molecular Aplicada à Saúde, Universidade Luterana do Brasil, Canoas, RS, Brazil
| | - Luciana Tomazzoni
- Laboratório de Biologia do Câncer, Programa de Pós-Graduação em Biologia Celular e Molecular Aplicada à Saúde, Universidade Luterana do Brasil, ULBRA, Avenida Farroupilha, 8001, Prédio 22, 5º andar, Bairro São José, Canoas, RS, CEP 92425-900, Brazil
| | - Jaqueline Nascimento Picada
- Laboratório de Genética Toxicológica, Programa de Pós-Graduação em Biologia Celular e Molecular Aplicada à Saúde, Universidade Luterana do Brasil, Canoas, RS, Brazil
| | - Ivana Grivicich
- Laboratório de Biologia do Câncer, Programa de Pós-Graduação em Biologia Celular e Molecular Aplicada à Saúde, Universidade Luterana do Brasil, ULBRA, Avenida Farroupilha, 8001, Prédio 22, 5º andar, Bairro São José, Canoas, RS, CEP 92425-900, Brazil.
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Dos Santos TM, Siebert C, de Oliveira MF, Manfredini V, Wyse ATS. Chronic mild Hyperhomocysteinemia impairs energy metabolism, promotes DNA damage and induces a Nrf2 response to oxidative stress in rats brain. Cell Mol Neurobiol 2019; 39:687-700. [PMID: 30949917 DOI: 10.1007/s10571-019-00674-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 03/28/2019] [Indexed: 12/13/2022]
Abstract
Homocysteine (HCY) has been linked to oxidative stress and varied metabolic changes that are dependent on its concentration and affected tissues. In the present study we evaluate parameters of energy metabolism [succinate dehydrogenase (SDH), complex II and IV (cytochrome c oxidase), and ATP levels] and oxidative stress [DCFH oxidation, nitrite levels, antioxidant enzymes and lipid, protein and DNA damages, as well as nuclear factor erythroid 2-related (Nrf2) protein abundance] in amygdala and prefrontal cortex of HCY-treated rats. Wistar male rats were treated with a subcutaneous injection of HCY (0.03 µmol/g of body weight) from the 30th to 60th post-natal day, twice a day, to induce mild hyperhomocysteinemia (HHCY). The rats were euthanatized without anesthesia at 12 h after the last injection, and amygdala and prefrontal cortex were dissected for biochemical analyses. In the amygdala, mild HHCY increased activities of SDH and complex II and decreased complex IV and ATP level, as well as increased antioxidant enzymes activities (glutathione peroxidase and superoxide dismutase), nitrite levels, DNA damage, and Nrf 2 protein abundance. In the prefrontal cortex, mild HHCY did not alter energy metabolism, but increased glutathione peroxidase, catalase and DNA damage. Other analyzed parameters were not altered by HCY-treatment. Our findings suggested that chronic mild HHCY changes each brain structure, particularly and specifically. These changes may be associated with the mechanisms by which chronic mild HHCY has been linked to the risk factor of fear, mood disorders and depression, as well as in neurodegenerative diseases.
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Affiliation(s)
- Tiago Marcon Dos Santos
- Laboratório de Neuroproteção e Doenças Neurometabólicas, Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos, 2600-Anexo, Porto Alegre, RS, CEP 90035-003, Brazil
| | - Cassiana Siebert
- Laboratório de Neuroproteção e Doenças Neurometabólicas, Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos, 2600-Anexo, Porto Alegre, RS, CEP 90035-003, Brazil
| | - Micaela Federizzi de Oliveira
- Laboratório de Hematologia e Citologia Clínica, Universidade Federal do Pampa, BR 472, Km 592, Caixa Postal 118, Uruguaiana, RS, 97508-000, Brazil
| | - Vanusa Manfredini
- Laboratório de Hematologia e Citologia Clínica, Universidade Federal do Pampa, BR 472, Km 592, Caixa Postal 118, Uruguaiana, RS, 97508-000, Brazil
| | - Angela T S Wyse
- Laboratório de Neuroproteção e Doenças Neurometabólicas, Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos, 2600-Anexo, Porto Alegre, RS, CEP 90035-003, Brazil.
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Hauschild TC, Guerreiro G, Mescka CP, Coelho DM, Steffens L, Moura DJ, Manfredini V, Vargas CR. DNA damage induced by alloisoleucine and other metabolites in maple syrup urine disease and protective effect of l-carnitine. Toxicol In Vitro 2019; 57:194-202. [PMID: 30853490 DOI: 10.1016/j.tiv.2019.03.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 03/01/2019] [Accepted: 03/05/2019] [Indexed: 12/13/2022]
Abstract
Maple syrup urine disease (MSUD) is an inherited deficiency of the branched-chain α-keto dehydrogenase complex, characterized by accumulation of the branched-chain amino acids (BCAAs) and their respective branched chain α-keto-acids (BCKAs), as well as by the presence of alloisoleucine (Allo). Studies have shown that oxidative stress is involved in the pathophysiology of MSUD. In this work, we investigated using the comet assay whether Allo, BCAAs and BCKAs could induce in vitro DNA damage, as well as the influence of l-Carnitine (L-Car) upon DNA damage. We also evaluated urinary 8-hydroxydeoguanosine (8-OHdG) levels, an oxidative DNA damage biomarker, in MSUD patients submitted to a restricted diet supplemented or not with L-Car. All tested concentrations of metabolites (separated or incubated together) induced in vitro DNA damage, and the co-treatment with L-Car reduced these effects. We found that Allo induced the higher DNA damage class and verified a potentiation of DNA damage induced by synergistic action between metabolites. In vivo, it was observed a significant increase in 8-OHdG levels, which was reversed by L-Car. We demonstrated for the first time that oxidative DNA damage is induced not only by BCAAs and BCKAs but also by Allo and we reinforce the protective effect of L-Car.
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Affiliation(s)
- Tatiane Cristina Hauschild
- Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, UFRGS, Av. Ipiranga, 2752, CEP 90610-000 Porto Alegre, RS, Brazil; Serviço de Genéstica Médica, HCPA, R. Ramiro Barcelos, 2350, CEP 90035-003 Porto Alegre, RS, Brazil.
| | - Gilian Guerreiro
- Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, UFRGS, Av. Ipiranga, 2752, CEP 90610-000 Porto Alegre, RS, Brazil; Serviço de Genéstica Médica, HCPA, R. Ramiro Barcelos, 2350, CEP 90035-003 Porto Alegre, RS, Brazil
| | - Caroline Paula Mescka
- Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, UFRGS, Av. Ipiranga, 2752, CEP 90610-000 Porto Alegre, RS, Brazil
| | - Daniella Moura Coelho
- Serviço de Genéstica Médica, HCPA, R. Ramiro Barcelos, 2350, CEP 90035-003 Porto Alegre, RS, Brazil
| | - Luiza Steffens
- Laboratório de Genética Toxicológica, UFCSPA, R. Sarmento Leite, 245, CEP 90050-170 Porto Alegre, RS, Brazil
| | - Dinara Jaqueline Moura
- Laboratório de Genética Toxicológica, UFCSPA, R. Sarmento Leite, 245, CEP 90050-170 Porto Alegre, RS, Brazil
| | - Vanusa Manfredini
- Programa de Pós-Graduação em Bioquímica, BR 472, Km 585, 118, Universidade Federal do Pampa, CEP 97500-970 Uruguaiana, RS, Brazil
| | - Carmen Regla Vargas
- Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, UFRGS, Av. Ipiranga, 2752, CEP 90610-000 Porto Alegre, RS, Brazil; Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, UFRGS, R. Ramiro Barcelos, 2600, CEP 90035-003 Porto Alegre, RS, Brazil; Serviço de Genéstica Médica, HCPA, R. Ramiro Barcelos, 2350, CEP 90035-003 Porto Alegre, RS, Brazil.
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de Sousa FS, Nunes EA, Gomes KS, Cerchiaro G, Lago JHG. Genotoxic and cytotoxic effects of neolignans isolated from Nectandra leucantha (Lauraceae). Toxicol In Vitro 2019; 55:116-123. [DOI: 10.1016/j.tiv.2018.12.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 12/10/2018] [Accepted: 12/17/2018] [Indexed: 12/18/2022]
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Garanzini DS, Medici S, Moreyra LD, Menone ML. Acute exposure to a commercial formulation of Azoxystrobin alters antioxidant enzymes and elicit damage in the aquatic macrophyte Myriophyllum quitense. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2019; 25:135-143. [PMID: 30804636 PMCID: PMC6352532 DOI: 10.1007/s12298-018-0603-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Revised: 08/30/2018] [Accepted: 09/10/2018] [Indexed: 06/09/2023]
Abstract
Azoxystrobin is a strobilurin of growing concern in aquatic environments because it is the most sold fungicide worldwide, however, the information available about its effect on aquatic non-target organisms is scarce. The objective of the present study was to evaluate potential physiological, biochemical, and genetic effects at environmentally relevant (1-10 μg/L) and elevated (100-500 μg/L) concentrations in the aquatic macrophyte Myriophyllum quitense exposed to the commercial formulation AMISTAR®. Following an acute 24-h exposure, there were no effects of AMISTAR® on photosynthetic pigments at any of the concentrations evaluated. Glutathione-S-transferase activity was significantly elevated at 1 and 10 μg/L AZX. Significant decrease of catalase and guaiacol peroxidase activities in plants exposed to 500 μg/L, and to 100 and 500 μg/L, respectively, and an increase in glycolate oxidase activity at 500 μg/L was observed. DNA damage at 100 and 500 μg/L was observed. These data indicate that although environmentally relevant levels of AMISTAR® did not result cytotoxic, this fungicide was genotoxic, affecting the physiological process of photorespiration and caused oxidative damage at high concentrations. In this sense, it is necessary to explore sub-lethal responses in non-target organisms because some effects could promote further potential long-term biological consequences in a context of repeated pulses of exposure.
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Affiliation(s)
- Daniela S. Garanzini
- Lab. Ecotoxicología, Instituto de Investigaciones Marinas y Costeras (IIMyC)-UNMDP/CONICET, Funes 3350, 7600 Mar del Plata, Buenos Aires Argentina
| | - Sandra Medici
- Fares Taie Instituto de Análisis, Magallanes 3019, 7600 Mar del Plata, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Capital Federal, Argentina
| | - Lucía D. Moreyra
- Facultad de Ciencias Exactas y Naturales- UNMDP, Funes 3350, 7600 Mar del Plata, Argentina
| | - Mirta L. Menone
- Lab. Ecotoxicología, Instituto de Investigaciones Marinas y Costeras (IIMyC)-UNMDP/CONICET, Funes 3350, 7600 Mar del Plata, Buenos Aires Argentina
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Quatrin PM, Dalla Lana DF, Bazana LCG, de Oliveira LFS, Lettieri Teixeira M, Silva EE, Lopes W, Canto RFS, Silveira GP, Fuentefria AM. 3-Selenocyanate-indoles as new agents for the treatment of superficial and mucocutaneous infections. NEW J CHEM 2019. [DOI: 10.1039/c8nj04935a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The development of resistance to the current antifungal agents is an alarming problem.
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Affiliation(s)
- Priscilla Maciel Quatrin
- Programa de Pós-Graduação em Microbiologia Agrícola e do Ambiente
- Universidade Federal do Rio Grande do Sul
- Porto Alegre
- Brazil
| | - Daiane Flores Dalla Lana
- Programa de Pós-Graduação em Ciências Farmacêuticas
- Universidade Federal do Rio Grande do Sul
- Porto Alegre
- Brazil
| | - Luana Candice Genz Bazana
- Programa de Pós-Graduação em Microbiologia Agrícola e do Ambiente
- Universidade Federal do Rio Grande do Sul
- Porto Alegre
- Brazil
| | | | | | - Edilma Elaine Silva
- Departamento de Química Orgânica
- Universidade Federal do Rio Grande do Sul
- Porto Alegre
- Brazil
| | - William Lopes
- Department of Molecular Biology and Biotechnology
- Universidade Federal do Rio Grande do Sul
- Porto Alegre
- Brazil
| | - Rômulo Faria Santos Canto
- Programa de Pós-Graduação em Ciências da Saúde
- Universidade Federal de Ciências da Saúde de Porto Alegre
- Porto Alegre
- Brazil
| | - Gustavo Pozza Silveira
- Programa de Pós-Graduação em Microbiologia Agrícola e do Ambiente
- Universidade Federal do Rio Grande do Sul
- Porto Alegre
- Brazil
- Departamento de Química Orgânica
| | - Alexandre Meneghello Fuentefria
- Programa de Pós-Graduação em Microbiologia Agrícola e do Ambiente
- Universidade Federal do Rio Grande do Sul
- Porto Alegre
- Brazil
- Programa de Pós-Graduação em Ciências Farmacêuticas
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48
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Eggplant fruits protect against DNA damage and mutations. Mutat Res 2018; 813:39-45. [PMID: 30594791 DOI: 10.1016/j.mrfmmm.2018.12.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 12/20/2018] [Accepted: 12/20/2018] [Indexed: 01/11/2023]
Abstract
Eggplant belongs to the Solanaceae family, and it has an important antioxidant capability that has been shown to counteract oxidation, which is harmful to health and many diseases. In this present study, we evaluated the antigenotoxic effects of six eggplants ((Solanum aculeatissimum Jacq. 'Ma-khuea-lueang'; ML), (Solanum aculeatissimum Jacq. 'Ma-khuea-pro'; MP), (Solanum aculeatissimum Jacq. 'Ma-khuea-sawoei'; MS), (Solanum melongena Linn. 'Ma-khuea-khai-tao'; MKT), (Solanum melongena Linn. 'Ma-khuea-muang klom'; MM) and (Solanum torvum Sw. 'Ma-khuea-phuang'; MPH)) against urethane-induced somatic mutation and recombination test (SMART) in Drosophila melanogaster and hydrogen peroxide-induced oxidative DNA damage in human lymphocytes. First, we determined all of the eggplant extracts of their antioxidant properties including radical scavenging activities, reducing antioxidant power and total phenolic contents, surprisingly ML extract showed the highest level of activity. In SMART, larvae were fed with each lyophilized eggplant. The results revealed that no sample was mutagenic. Interestingly, we found that all six eggplants had a potent inhibitory effect against urethane-induced mutagenicity. Moreover, the protective effect of each eggplant extract against oxidative DNA damage in human lymphocytes was investigated using the single-cell gel electrophoresis (comet) assay. The treatment cells with six eggplant extracts prevented DNA human lymphocytes in response to hydrogen peroxide, especially ML extract exhibited higher an inhibition percentage than other samples. This study demonstrated that these eggplants seem to be safe for consumption and their extracts could protect against DNA damage. Thus, these eggplants have the potential to provide health benefits associated with prevention or reduced risk of developing chronic diseases, such as cancer.
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Aramburú Junior JS, Eilers Treichel TL, Lemos Pinto Filho ST, Gehrke SA, Machado AK, Cadoná FC, Mânica da Cruz IB, Pippi NL. DNA damage in dental pulp mesenchymal stem cells: An in vitro study. VETERINARY RESEARCH FORUM : AN INTERNATIONAL QUARTERLY JOURNAL 2018; 9:293-299. [PMID: 30713606 PMCID: PMC6346493 DOI: 10.30466/vrf.2018.33083] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Accepted: 11/07/2017] [Indexed: 12/21/2022]
Abstract
The aim of this study was to evaluate the potential use of a DNA comet assay, DNA fragmentation fluorimetric assay and reactive oxygen species levels as potential biomarkers of genome conditions of dental pulp stem cells (DPSCs) isolated from dog canine teeth. Mesenchymal stem cells were isolated from the dental pulp collected from dog teeth. The results obtained suggest the ideal moment for clinical application of cellular therapy for this type of cell. The cell culture was maintained with Dulbecco’s modified Eagle’s medium supplemented with 10.00% fetal bovine serum for eight passages. During each passage, cell proliferation, oxidative stress and level of DNA fragmentation were assessed by3-(4,5-dimethylthiazol-2-yl)-2,5 diphenyltetrazolium (MTT) assay, testing 2,7 dichlorodihydro-fluorescein-diacetate and PicoGreen®, respectively. There were important differences among the first three DPSC passages compared to passages 4–8 and a large number of nuclei with some levels of DNA damage (30.00 to 40.00% in initial DPSC passages and > 50.00% in late passages), indicating in vitro DPSC genomic fragility. Within the limitations of this study, the results suggest these relatively simple and inexpensive approaches - comet and DNA fragmentation assays - could help sort stem cells with less DNA damage for use in research or therapies.
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Affiliation(s)
- Jaime Sardá Aramburú Junior
- Graduate Program in Veterinary Medicine, Federal University of Santa Maria, Santa Maria, Brazil.,Biotecnos Research Center, Santa Maria, Rio Grande do Sul, Brazil; Catholic University of Uruguay, Montevideo, Uruguay
| | | | | | - Sergio Alexandre Gehrke
- Biotecnos Research Center, Santa Maria, Rio Grande do Sul, Brazil; Catholic University of Uruguay, Montevideo, Uruguay
| | | | | | | | - Ney Luis Pippi
- Graduate Program in Veterinary Medicine, Federal University of Santa Maria, Santa Maria, Brazil
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50
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Palazzo RP, Jardim LB, Bacellar A, de Oliveira FR, Maraslis FT, Pereira CHJ, da Silva J, Maluf SW. DNA damage and repair in individuals with ataxia-telangiectasia and their parents. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2018; 836:122-126. [DOI: 10.1016/j.mrgentox.2018.06.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 04/04/2018] [Accepted: 06/01/2018] [Indexed: 10/14/2022]
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