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Perez-Montero B, Fermin-Rodriguez ML, Miro G, de Juan L, Cruz-Lopez F. Hemolysis, icterus and lipemia interfere with the determination of two oxidative stress biomarkers in canine serum. BMC Vet Res 2023; 19:172. [PMID: 37741986 PMCID: PMC10517482 DOI: 10.1186/s12917-023-03740-y] [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: 05/09/2023] [Accepted: 09/15/2023] [Indexed: 09/25/2023] Open
Abstract
BACKGROUND Oxidative stress has been proven to play a role in numerous human and canine diseases. Among the biomarkers of oxidative stress, Thiobarbituric Acid Reactive Substances (TBARS) and Total Antioxidant Status (TAS) are two of the most widely used. Preanalytical factors are crucial for obtaining accurate results in these assays. Hemolysis, icterus and lipemia (HIL) are common sources of preanalytical errors in the laboratory; however, limited information is available regarding the considerations for canine specimens. Therefore, the objective of this study was to evaluate the potential interferences of HIL in the determination of TBARS and TAS in canine serum. METHODS Solutions of pooled canine serum samples were prepared by adding increasing concentrations of hemolysate, bilirubin and a synthetic lipid emulsion. TBARS and TAS were determined, and biases from the control value caused by the interfering substances were calculated. RESULTS Hemolysis, icterus and lipemia induced significant interferences on TBARS and TAS, albeit to varying degrees depending on the specific biomarker and interfering substance. TBARS appeared to be more susceptible to interferences in this study. Slight hemolysis, moderate icterus and slight lipemia caused notable deviations in TBARS values, surpassing the acceptable threshold for interference. TAS assay was also affected by HIL, although to a lesser extent compared to TBARS. Significant biases from TAS control value were observed when icterus was moderate, and when hemolysis and lipemia were more pronounced. CONCLUSIONS In light of our results, we conclude that hemolyzed, icteric and lipemic specimens are not suitable for TBARS and TAS determination in canine serum. Our findings hold considerable practical utility, as a simple visual inspection would be sufficient for identifying and excluding such specimens.
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Affiliation(s)
- B Perez-Montero
- Clinical Pathology Service, Veterinary Teaching Hospital, Complutense University, Madrid, Spain.
| | - M L Fermin-Rodriguez
- Clinical Pathology Service, Veterinary Teaching Hospital, Complutense University, Madrid, Spain
- Animal Medicine and Surgery Department, Faculty of Veterinary Medicine, Complutense University, Madrid, Spain
| | - G Miro
- Animal Health Department, Faculty of Veterinary Medicine, Complutense University, Madrid, Spain
| | - L de Juan
- Animal Health Department, Faculty of Veterinary Medicine, Complutense University, Madrid, Spain
- VISAVET Health Surveillance Centre, Complutense University, Madrid, Spain
| | - F Cruz-Lopez
- VISAVET Health Surveillance Centre, Complutense University, Madrid, Spain
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Tamarindo GH, Novais AA, Chuffa LGA, Zuccari DAPC. Metabolic Alterations in Canine Mammary Tumors. Animals (Basel) 2023; 13:2757. [PMID: 37685021 PMCID: PMC10487042 DOI: 10.3390/ani13172757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 08/16/2023] [Accepted: 08/25/2023] [Indexed: 09/10/2023] Open
Abstract
Canine mammary tumors (CMTs) are among the most common diseases in female dogs and share similarities with human breast cancer, which makes these animals a model for comparative oncology studies. In these tumors, metabolic reprogramming is known as a hallmark of carcinogenesis whereby cells undergo adjustments to meet the high bioenergetic and biosynthetic demands of rapidly proliferating cells. However, such alterations are also vulnerabilities that may serve as a therapeutic strategy, which has mostly been tested in human clinical trials but is poorly explored in CMTs. In this dedicated review, we compiled the metabolic changes described for CMTs, emphasizing the metabolism of carbohydrates, amino acids, lipids, and mitochondrial functions. We observed key factors associated with the presence and aggressiveness of CMTs, such as an increase in glucose uptake followed by enhanced anaerobic glycolysis via the upregulation of glycolytic enzymes, changes in glutamine catabolism due to the overexpression of glutaminases, increased fatty acid oxidation, and distinct effects depending on lipid saturation, in addition to mitochondrial DNA, which is a hotspot for mutations. Therefore, more attention should be paid to this topic given that targeting metabolic fragilities could improve the outcome of CMTs.
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Affiliation(s)
- Guilherme Henrique Tamarindo
- Department of Molecular Biology, São José do Rio Preto Faculty of Medicine, São José do Rio Preto 15090-000, SP, Brazil
- Brazilian Biosciences National Laboratory, Brazilian Center for Research in Energy and Materials (CNPEM), Campinas 13083-970, SP, Brazil
| | - Adriana Alonso Novais
- Health Sciences Institute (ICS), Mato Grosso Federal University (UFMT), Sinop 78550-728, MT, Brazil
| | - Luiz Gustavo Almeida Chuffa
- Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu 18618-689, SP, Brazil
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Soares FAC, Filho NAK, Beretta BFS, Linden TS, Pöppl AG, González FHD. Thiobarbituric acid reactive substances in dogs with spontaneous hypercortisolism. Domest Anim Endocrinol 2021; 77:106634. [PMID: 34126587 DOI: 10.1016/j.domaniend.2021.106634] [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: 11/22/2020] [Revised: 04/25/2021] [Accepted: 04/27/2021] [Indexed: 11/18/2022]
Abstract
Thiobarbituric acid reactive substances (TBARS) are laboratory markers of oxidative stress, which can be used to evaluate the lipid peroxidation that characterizes cell membrane damage caused by excess free radicals. This prospective study aimed to assess TBARS as a parameter of lipid peroxidation in dogs with spontaneous hypercortisolism (HC) at the time of diagnosis, and after trilostane treatment. Furthermore, it aimed to investigate the correlations between TBARS levels, and laboratory and cardiovascular parameters. Sixteen dogs with HC were evaluated at 3 different time points: At diagnosis (T0), 6 mo after treatment (T1), and 12 mo after trilostane treatment (T2). A control group (n = 20) of dogs with a demographic profile similar to the HC group, but considered healthy was selected and evaluated. There was a significant difference (P < 0.001) in TBARS levels between the HC group at diagnosis (4.38 ± 1.16 nmoles MDA/mg protein) and the control group (2.15 ± 0.45 nmoles MDA/mg protein). Dogs in the HC group exhibited a significant reduction (P < 0.001) in TBARS levels after treatment. There was no significant difference in TBARS levels between the control group and the HC group at T1 and T2 evaluation. TBARS positively correlated with left atrial dimensions and hematocrit. The study demonstrates that lipid peroxidation is increased in canine HC and suggests that control of the disease is beneficial to normalize the state of oxidative stress.
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Affiliation(s)
- F A C Soares
- Veterinary Sciences Post-Graduation Program, School of Veterinary Medicine, Federal University of Rio Grande do Sul, Porto Alegre-RS, Brazil.
| | - N A Kretzmann Filho
- REPROLAB/PPGMAE, School of Veterinary Medicine, Federal University of Rio Grande do Sul, Porto Alegre-RS, Brazil
| | - B F S Beretta
- REPROLAB/PPGMAE, School of Veterinary Medicine, Federal University of Rio Grande do Sul, Porto Alegre-RS, Brazil
| | - T S Linden
- PetEndocrine, Veterinary Endocrinology and Metabology, Porto Alegre-RS, Brazil
| | - A G Pöppl
- Department of Animal Medicine, School of Veterinary Medicine, Federal University of Rio Grande do Sul, Porto Alegre-RS, Brazil
| | - F H D González
- Department of Veterinary Clinical Pathology, School of Veterinary Medicine, Federal University of Rio Grande do Sul, Porto Alegre-RS, Brazil
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Vilhena H, Tvarijonaviciute A, Cerón JJ, Figueira AC, Miranda S, Ribeiro A, Canadas A, Dias-Pereira P, Rubio CP, Franco L, Tecles F, Cabeças R, Pastor J, Silvestre-Ferreira AC. Acute phase proteins and biomarkers of oxidative status in feline spontaneous malignant mammary tumours. Vet Comp Oncol 2019; 17:394-406. [PMID: 31025532 DOI: 10.1111/vco.12486] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 04/15/2019] [Accepted: 04/17/2019] [Indexed: 12/27/2022]
Abstract
Acute phase proteins (APP) and biomarkers of oxidative status change in human and canine mammary tumours, however, they have not been studied in feline mammary tumours. The aims of this study were to investigate the APP and antioxidant responses in feline malignant mammary tumours, to evaluate their relation with tumour features, and to assess their prognostic value. Serum amyloid A (SAA), haptoglobin (Hp), albumin, butyrylcholinesterase (BChE), insulin-like growth factor1 (IGF1), paraoxonase1 (PON1), total serum thiols (Thiol), glutathione peroxidase (GPox) and total antioxidant capacity determined by different assays, including trolox equivalent antioxidant capacity assessed by two different methodologies (TEAC1/2), ferric reducing ability of plasma (FRAP), and cupric reducing antioxidant capacity (CUPRAC), were determined in serum of 50 queens with spontaneous mammary carcinomas and of 12 healthy female cats. At diagnosis, diseased queens presented significantly higher SAA and Hp, and lower albumin, BChE, GPox, TEAC1, TEAC2 and CUPRAC than controls. Different tumour features influenced concentrations of APP and antioxidants. Increases in serum Hp, and decreases in albumin, Thiol and FRAP were significantly associated with neoplastic vascular emboli, metastasis in regional lymph nodes and/or in distant organs. Distant metastasis development during the course of the disease was associated with increases in SAA and TEAC1. At diagnosis, decreased albumin was associated with a longer survival, and BChE <1.15 μmoL/mL.minute was associated with a shorter survival time on multivariate analysis. Feline malignant mammary tumours are associated with an APP response and oxidative stress, and different tumour features influence the inflammatory response and the oxidative damage. Furthermore, some of these analytes proved to have prognostic value.
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Affiliation(s)
- Hugo Vilhena
- Department of Veterinary Medicine, Center for Investigation Vasco da Gama (CIVG), Vasco da Gama Universitary School, Coimbra, Portugal.,Baixo Vouga Veterinary Hospital, Águeda, Portugal.,Animal and Veterinary Research Centre (CECAV), University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
| | - Asta Tvarijonaviciute
- Interdisciplinary Laboratory of Clinical Analysis of University of Murcia (Interlab-UMU), University of Murcia, Murcia, Spain
| | - José J Cerón
- Interdisciplinary Laboratory of Clinical Analysis of University of Murcia (Interlab-UMU), University of Murcia, Murcia, Spain
| | - Ana C Figueira
- Department of Veterinary Medicine, Center for Investigation Vasco da Gama (CIVG), Vasco da Gama Universitary School, Coimbra, Portugal.,University Veterinary Hospital of Coimbra, Coimbra, Portugal
| | - Sónia Miranda
- Baixo Vouga Veterinary Hospital, Águeda, Portugal.,Animal and Veterinary Research Centre (CECAV), University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
| | - Ana Ribeiro
- Veterinary Policlinic of Aveiro, Aveiro, Portugal
| | - Ana Canadas
- Department of Pathology and Molecular Immunology, Institute for the Biomedical Sciences Abel Salazar, Porto University (ICBAS-UP), Porto, Portugal
| | - Patrícia Dias-Pereira
- Department of Pathology and Molecular Immunology, Institute for the Biomedical Sciences Abel Salazar, Porto University (ICBAS-UP), Porto, Portugal
| | - Camila P Rubio
- Interdisciplinary Laboratory of Clinical Analysis of University of Murcia (Interlab-UMU), University of Murcia, Murcia, Spain
| | - Lorena Franco
- Interdisciplinary Laboratory of Clinical Analysis of University of Murcia (Interlab-UMU), University of Murcia, Murcia, Spain
| | - Fernando Tecles
- Interdisciplinary Laboratory of Clinical Analysis of University of Murcia (Interlab-UMU), University of Murcia, Murcia, Spain
| | - Ricardo Cabeças
- Department of Veterinary Medicine, Center for Investigation Vasco da Gama (CIVG), Vasco da Gama Universitary School, Coimbra, Portugal
| | - Josep Pastor
- Department of Animal Medicine and Surgery, Autonomous University of Barcelona, Barcelona, Spain
| | - Ana C Silvestre-Ferreira
- Animal and Veterinary Research Centre (CECAV), University of Trás-os-Montes and Alto Douro, Vila Real, Portugal.,Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
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Jayasri K, Padmaja K, Saibaba M. Altered oxidative stress and carbohydrate metabolism in canine mammary tumors. Vet World 2016; 9:1489-1492. [PMID: 28096627 PMCID: PMC5234069 DOI: 10.14202/vetworld.2016.1489-1492] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2016] [Accepted: 11/24/2016] [Indexed: 12/28/2022] Open
Abstract
Aim: Mammary tumors are the most prevalent type of neoplasms in canines. Even though cancer induced metabolic alterations are well established, the clinical data describing the metabolic profiles of animal tumors is not available. Hence, our present investigation was carried out with the aim of studying changes in carbohydrate metabolism along with the level of oxidative stress in canine mammary tumors. Materials and Methods: Fresh mammary tumor tissues along with the adjacent healthy tissues were collected from the college surgical ward. The levels of thiobarbituric acid reactive substances (TBARS), glutathione, protein, hexose, hexokinase, glucose-6-phosphatase, fructose-1, 6-bisphosphatase, and glucose-6-phosphate dehydrogenase (G6PD) were analyzed in all the tissues. The results were analyzed statistically. Results: More than two-fold increase in TBARS and three-fold increase in glutathione levels were observed in neoplastic tissues. Hexokinase activity and hexose concentration (175%) was found to be increased, whereas glucose-6-phosphatase (33%), fructose-1, 6-bisphosphatase (42%), and G6PD (5 fold) activities were reduced in tumor mass compared to control. Conclusion: Finally, it was revealed that lipid peroxidation was increased with differentially altered carbohydrate metabolism in canine mammary tumors.
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Affiliation(s)
- K Jayasri
- Department of Veterinary Biochemistry, College of Veterinary Science, Tirupati, Andhra Pradesh, India
| | - K Padmaja
- Department of Veterinary Biochemistry, College of Veterinary Science, Tirupati, Andhra Pradesh, India
| | - M Saibaba
- Department of Surgery and Radiology, College of Veterinary Science, Tirupati, Andhra Pradesh, India
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