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Pereira PG, Alves LL, Ciambarella BT, Rabelo K, Nascimento ALR, Moraes ACN, Bernardi A, Guimarães FV, Carvalho GM, da Silva JFR, de Carvalho JJ. Capybara Oil Improves Renal Pathophysiology and Inflammation in Obese Mice. Nutrients 2023; 15:2925. [PMID: 37447251 DOI: 10.3390/nu15132925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 01/06/2023] [Accepted: 01/10/2023] [Indexed: 07/15/2023] Open
Abstract
Obesity is an inflammatory disease associated with secondary diseases such as kidney disease, which can cause lipotoxicity, inflammation and loss of organ function. Polyunsaturated fatty acids act in the production of lipid mediators and have anti-inflammatory characteristics. In this work, the objective was to evaluate renal histopathology in obese mice and the effects of treatment with capybara oil (CO) (5000 mg/kg/day for 4 weeks). Parameters such as body mass, lipid profile, systolic blood pressure, urinary creatinine and protein excretion, structure and ultrastructure of the renal cortex, fibrosis, tissue inflammation and oxidative stress were analyzed. CO treatment in obese mice showed improvement in the lipid profile and reduction in systolic blood pressure levels, in addition to beneficial remodeling of the renal cortex. Our data demonstrated that CO decreased inflammation, oxidative stress and renal fibrosis, as evidenced by quantifying the expression of TNF-α, IL-10, CAT, SOD, α-SMA and TGF-β. Although treatment with CO did not show improvement in renal function, ultrastructural analysis showed that the treatment was effective in restoring podocytes and pedicels, with restructuring of the glomerular filtration barrier. These results demonstrate, for the first time, that treatment with CO is effective in reducing kidney damage, being considered a promising treatment for obesity.
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Affiliation(s)
- Priscila G Pereira
- Ultrastructure and Tissue Biology Laboratory, Institute of Biology, Rio de Janeiro State University, Boulevard Vinte e Oito de Setembro, 87 Fundos, 3° Andar Vila Isabel, Rio de Janeiro 20551-030, RJ, Brazil
| | - Luciana L Alves
- Ultrastructure and Tissue Biology Laboratory, Institute of Biology, Rio de Janeiro State University, Boulevard Vinte e Oito de Setembro, 87 Fundos, 3° Andar Vila Isabel, Rio de Janeiro 20551-030, RJ, Brazil
| | - Bianca T Ciambarella
- Ultrastructure and Tissue Biology Laboratory, Institute of Biology, Rio de Janeiro State University, Boulevard Vinte e Oito de Setembro, 87 Fundos, 3° Andar Vila Isabel, Rio de Janeiro 20551-030, RJ, Brazil
| | - Kíssila Rabelo
- Ultrastructure and Tissue Biology Laboratory, Institute of Biology, Rio de Janeiro State University, Boulevard Vinte e Oito de Setembro, 87 Fundos, 3° Andar Vila Isabel, Rio de Janeiro 20551-030, RJ, Brazil
| | - Ana Lúcia R Nascimento
- Ultrastructure and Tissue Biology Laboratory, Institute of Biology, Rio de Janeiro State University, Boulevard Vinte e Oito de Setembro, 87 Fundos, 3° Andar Vila Isabel, Rio de Janeiro 20551-030, RJ, Brazil
| | - Alan Cesar N Moraes
- Electron Microscopy Laboratory of Biology Institute, University of Federal Fluminense, Rio de Janeiro 21040-900, RJ, Brazil
| | - Andressa Bernardi
- Inflammation Laboratory, Fiocruz, Rio de Janeiro 21040-900, RJ, Brazil
| | | | - Gabriela M Carvalho
- Ultrastructure and Tissue Biology Laboratory, Institute of Biology, Rio de Janeiro State University, Boulevard Vinte e Oito de Setembro, 87 Fundos, 3° Andar Vila Isabel, Rio de Janeiro 20551-030, RJ, Brazil
| | - Jemima F R da Silva
- Ultrastructure and Tissue Biology Laboratory, Institute of Biology, Rio de Janeiro State University, Boulevard Vinte e Oito de Setembro, 87 Fundos, 3° Andar Vila Isabel, Rio de Janeiro 20551-030, RJ, Brazil
| | - Jorge J de Carvalho
- Ultrastructure and Tissue Biology Laboratory, Institute of Biology, Rio de Janeiro State University, Boulevard Vinte e Oito de Setembro, 87 Fundos, 3° Andar Vila Isabel, Rio de Janeiro 20551-030, RJ, Brazil
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Peres RAS, Silva-Aguiar RP, Teixeira DE, Peruchetti DB, Alves SAS, Leal ABC, Castro GF, Ribeiro NBS, Guimarães FV, Pinheiro AAS, Silva PMRE, Martins MA, Caruso-Neves C. Gold nanoparticles reduce tubule-interstitial injury and proteinuria in a murine model of subclinical acute kidney injury. Biochim Biophys Acta Gen Subj 2023; 1867:130314. [PMID: 36693453 DOI: 10.1016/j.bbagen.2023.130314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 01/17/2023] [Accepted: 01/19/2023] [Indexed: 01/22/2023]
Abstract
Subclinical acute kidney injury (subAKI) is characterized by tubule-interstitial injury without significant changes in glomerular function. SubAKI is associated with the pathogenesis and progression of acute and chronic kidney diseases. Currently, therapeutic strategies to treat subAKI are limited. The use of gold nanoparticles (AuNPs) has shown promising benefits in different models of diseases. However, their possible effects on subAKI are still unknown. Here, we investigated the effects of AuNPs on a mouse model of subAKI. Animals with subAKI showed increased functional and histopathologic markers of tubular injury. There were no changes in glomerular function and structure. The animals with subAKI also presented an inflammatory profile demonstrated by activation of Th1 and Th17 cells in the renal cortex. This phenotype was associated with decreased megalin-mediated albumin endocytosis and expression of proximal tubular megalin. AuNP treatment prevented tubule-interstitial injury induced by subAKI. This effect was associated with a shift to an anti-inflammatory Th2 response. Furthermore, AuNP treatment preserved megalin-mediated albumin endocytosis in vivo and in vitro. AuNPs were not nephrotoxic in healthy mice. These results suggest that AuNPs have a protective effect in the tubule-interstitial injury observed in subAKI, highlighting a promising strategy as a future antiproteinuric treatment.
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Affiliation(s)
- Rodrigo A S Peres
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Rodrigo P Silva-Aguiar
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Douglas E Teixeira
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Diogo B Peruchetti
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Sarah A S Alves
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Anna Beatriz C Leal
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Guilherme F Castro
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Natalia B S Ribeiro
- Laboratory of Inflammation, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Fernanda V Guimarães
- Laboratory of Inflammation, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Ana Acacia S Pinheiro
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil; Rio de Janeiro Innovation Network in Nanosystems for Health-NanoSAÚDE/FAPERJ, Rio de Janeiro, Brazil
| | - Patrícia M R E Silva
- Laboratory of Inflammation, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil; Rio de Janeiro Innovation Network in Nanosystems for Health-NanoSAÚDE/FAPERJ, Rio de Janeiro, Brazil
| | - Marco A Martins
- Laboratory of Inflammation, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil; Rio de Janeiro Innovation Network in Nanosystems for Health-NanoSAÚDE/FAPERJ, Rio de Janeiro, Brazil
| | - Celso Caruso-Neves
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil; Rio de Janeiro Innovation Network in Nanosystems for Health-NanoSAÚDE/FAPERJ, Rio de Janeiro, Brazil; National Institute of Science and Technology for Regenerative Medicine, Rio de Janeiro, Brazil.
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