1
|
Oishi JC, de Moraes LHO, Filho JCC, de Moraes TF, Terroni B, de Castro CA, Almeida-Lopes L, Rodrigues GJ. Long-term effects of photobiomodulation therapy on blood pressure in obese rats induced by a high-fat diet. Lasers Med Sci 2024; 39:20. [PMID: 38165554 DOI: 10.1007/s10103-023-03950-8] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 12/05/2023] [Indexed: 01/04/2024]
Abstract
The main cardiovascular disease risk associated with obesity is hypertension. The therapeutic use of photobiomodulation therapy (PBM) is suggested for the treatment of wound healing, osteoarthritis, and arterial diseases. However, few studies have measured how red laser (at 660 nm) acts over hypertension, and any of those studies used experimental obesity model. The aim of the study was an attempt to evaluate the long-term effect of PBM on systolic blood pressure in an animal model of obesity, induced by a high-fat diet (HFD). Our results indicate that PBM carried out 3 days a week was able to prevent the increase in blood pressure (133.75 ± 4.82 mmHg, n = 8) induced by a high-fat diet (150.00 ± 4.57 mmHg, n = 8; p < 0.05), restore nitric oxide levels (control: 31.7 ± 5.5 μM, n = 8; HFD + PBM: 29.9 ± 3.7 μM, n = 8 > HFD: 22.2 ± 2.9 μM, n = 8, p < 0.05), decrease lipoperoxidation (control: 1.65 ± 0.25 nM, n = 8; HFD + PBM: 2.05 ± 0.55 nM, n = 8 < HFD: 3.20 ± 0.47 nM, n = 8; p < 0.05), and improve endothelial function (pD2 control: 7.39 ± 0.08, n = 8 > pD2 HFD + PBM: 7.15 ± 0.07, n = 8 > HFD: 6.94 ± 0.07, n = 8; p < 0.05). Our results indicate that PBM prevents the elevation of blood pressure in an obese animal model by a mechanism that involves improvement of endothelial function through an antioxidant effect.
Collapse
Affiliation(s)
- Jorge Camargo Oishi
- Universidade Federal de São Carlos, UFSCar. Rod. Washington Luis, Km 235, São Carlos, SP, CEP:13565-905, Brazil
| | - Luis Henrique Oliveira de Moraes
- Universidade Federal de São Carlos, UFSCar. Rod. Washington Luis, Km 235, São Carlos, SP, CEP:13565-905, Brazil.
- Department of Physical Therapy, College of Applied Health Sciences, University of Illinois at Chicago, Chicago, IL, USA.
| | - Julio Cesar Conceição Filho
- Universidade Federal de São Carlos, UFSCar. Rod. Washington Luis, Km 235, São Carlos, SP, CEP:13565-905, Brazil
| | - Thiago Francisco de Moraes
- Universidade Federal de São Carlos, UFSCar. Rod. Washington Luis, Km 235, São Carlos, SP, CEP:13565-905, Brazil
| | - Barbara Terroni
- Department of Pharmaceutical Science, Universidade Estadual Paulista "Julio de Mesquita Filho", Araraquara, São Paulo, Brazil
| | - Cynthia Aparecida de Castro
- Universidade Federal de São Carlos, UFSCar. Rod. Washington Luis, Km 235, São Carlos, SP, CEP:13565-905, Brazil
| | - Luciana Almeida-Lopes
- Núcleo de Pesquisa e Ensino de Fototerapia nas Ciências da Saúde - NUPEN, Rua Sebastião de Moraes, 831, São Carlos, SP, CEP:13562-030, Brazil
| | - Gerson Jhonatan Rodrigues
- Universidade Federal de São Carlos, UFSCar. Rod. Washington Luis, Km 235, São Carlos, SP, CEP:13565-905, Brazil
| |
Collapse
|
2
|
De Moraes TF, Filho JCC, Oishi JC, Almeida-Lopes L, Parizotto NA, Rodrigues GJ. Energy-dependent effect trial of photobiomodulation on blood pressure in hypertensive rats. Lasers Med Sci 2019; 35:1041-1046. [PMID: 31664552 DOI: 10.1007/s10103-019-02883-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 07/10/2019] [Accepted: 09/12/2019] [Indexed: 10/25/2022]
Abstract
The main purpose of this work was to construct an energy-dependent response curve of photobiomodulation on arterial pressure in hypertension animal model. To reach this objective, we have used a two-kidney one clip (2K-1C) rat model. Animals received acute laser light irradiation (660 nm) on abdominal region using different energy (0.6, 1.8, 3.6, 7.2, 13.8, 28.2, 55.8, and 111.6 J), the direct arterial pressure was measured by femoral cannulation, and systolic arterial pressure (SAP), diastolic arterial pressure (DAP), heart rate (HR), and time of effect were obtained. Our results indicated that 660 nm laser light presents an energy-dependent hypotensive effect, and 28.2 J energy irradiation reached the maximum hypotensive effect, inducing a decreased SAP, DAP, and HR (decrease in SAP: - 19.23 ± 1.82 mmHg, n = 11; DAP: - 9.57 ± 2.23 mmHg, n = 11; HR: - 39.15 ± 5.10 bpm, n = 11; and time of hypotensive effect: 3068.00 ± 719.00 s, n = 11). The higher energy irradiation evaluated (111.6 J) did not induce a hypotensive effect and induced an increase in HR (21.69 ± 7.89 bpm, n = 7). Taken together, our results indicate that red laser energy irradiation from 7.2 to 55.8 J is the effective therapeutic window to reduce SAP, DAP, MAP, and HR and induce a long-lasting hypotensive effect in rats, with effect loss at higher energy irradiation (111.6 J).
Collapse
Affiliation(s)
- T F De Moraes
- Department of Physiological Sciences, Federal University of São Carlos (UFSCar), Rod. Washington Luis, km 235, São Carlos, SP, 13565-905, Brazil
| | - J C C Filho
- Department of Physiological Sciences, Federal University of São Carlos (UFSCar), Rod. Washington Luis, km 235, São Carlos, SP, 13565-905, Brazil
| | - J C Oishi
- Department of Physiological Sciences, Federal University of São Carlos (UFSCar), Rod. Washington Luis, km 235, São Carlos, SP, 13565-905, Brazil
| | - L Almeida-Lopes
- Nucleus of Research and Teaching of Phototherapy in Health Sciences - NUPEN, São Carlos, SP, Brazil
| | - N A Parizotto
- Department of Physical Therapy, Federal University of São Carlos (UFSCar), São Carlos, SP, Brazil
| | - G J Rodrigues
- Department of Physiological Sciences, Federal University of São Carlos (UFSCar), Rod. Washington Luis, km 235, São Carlos, SP, 13565-905, Brazil.
| |
Collapse
|
3
|
Oishi JC, Castro CA, Silva KA, Fabricio V, Cárnio EC, Phillips SA, Duarte ACGDO, Rodrigues GJ. Endothelial Dysfunction and Inflammation Precedes Elevations in Blood Pressure Induced by a High-Fat Diet. Arq Bras Cardiol 2019; 110:558-567. [PMID: 30226915 PMCID: PMC6023639 DOI: 10.5935/abc.20180086] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 10/06/2017] [Indexed: 12/11/2022] Open
Abstract
Background Obesity leads to a chronic inflammatory state, endothelial dysfunction and
hypertension. Objective To establish the time-course of events regarding inflammatory markers,
endothelial dysfunction, systolic blood pressure (SBP) in obesity in only
one experimental model. Methods We fed male Wistar rats (eight-week age) with a standard diet (Control - CT,
n = 35), or palatable high-fat diet (HFD, n = 35) for 24 weeks. Every six
weeks, 7 animals from each group were randomly selected for euthanasia. SBP
and serum levels of interleukin-6, tumor necrosis factor-α,
C-reactive protein, adiponectin and nitric oxide were determined.
Endothelial and vascular smooth muscle functions were determined in
dissected aorta and lipid peroxidation was measured. Statistical
significance was set at p < 0.05. Results Levels of pro-inflammatory cytokines began to increase after six weeks of a
high-fat diet, while those of the anti-inflammatory cytokine adiponectin
decreased. Interestingly, the endothelial function and serum nitric oxide
began to decrease after six weeks in HFD group. The SBP and lipid
peroxidation began to increase at 12 weeks in HFD group. In addition, we
showed that total visceral fat mass was negatively correlated with
endothelial function and positively correlated with SBP. Conclusion Our results show the time-course of deleterious effects and their correlation
with obesity.
Collapse
Affiliation(s)
| | | | - Karina Ana Silva
- Universidade Federal de São Carlos (UFSCar), São Paulo, SP - Brazil
| | - Victor Fabricio
- Universidade Federal de São Carlos (UFSCar), São Paulo, SP - Brazil
| | | | | | | | | |
Collapse
|
4
|
Lino ADDS, Vianna D, Oishi JC, Souza MVC, Ruffoni LD, Marin CT, de Avó LRDS, Perez SEDA, Rodrigues GJ, Tirapegui J, Shiguemoto GE. Resistance training and caloric restriction prevent systolic blood pressure rise by improving the nitric oxide effect on smooth muscle and morphological changes in the aorta of ovariectomized rats. PLoS One 2018; 13:e0201843. [PMID: 30133537 PMCID: PMC6104970 DOI: 10.1371/journal.pone.0201843] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 07/22/2018] [Indexed: 12/30/2022] Open
Abstract
In this study, we investigated the effects of resistance training (RT), caloric restriction (CR), and the association of both interventions in aortic vascular reactivity and morphological alterations, matrix metalloproteinase-2 (MMP-2) activity, insulin resistance and systolic blood pressure (SBP) in ovariectomized rats. Fifty female Holtzman rats were subjected to ovariectomy and Sham surgery and distributed into the following groups: Sham-sedentary, ovariectomized-sedentary, ovariectomized-resistance training, ovariectomized-caloric restriction, and ovariectomized-resistance training and caloric restriction groups. RT and 30% CR protocols were performed for 13 weeks. Analyses were conducted to evaluate the following: acetylcholine and sodium nitroprusside-induced relaxation of aortic rings, MMP-2 activity, insulin tolerance test, highlighting of the aorta wall cross-sectional area by hematoxylin-eosin stain, aorta vessel remodeling and SBP. We observed that ovariectomy decreased the potency of dependent and independent endothelium relaxation and MMP-2 activity, prevented insulin resistance, promoted aorta vessel remodeling in the cross-sectional area, and promoted the media-to-lumen ratio, the collagen content, and the alteration of the structure and elastic fibers of the vessel. The effects of the ovariectomy could contribute to SBP increases. However, the association of exercise and diet improved the relaxation potency in dependent and independent endothelium relaxation, elevated MMP-2 activity, ameliorate insulin sensitivity, increased the aorta cross-sectional area and media-to-lumen ratio, decreased collagen content and promoted histological parameters of the aorta vessel wall, preventing the increase of SBP. CONCLUSION Our study revealed that the RT and CR separately, and even associatively, improved vascular function, activated MMP-2, and produced a beneficial hypertrophic remodeling, preventing the elevation of SBP in ovariectomized rats.
Collapse
Affiliation(s)
- Anderson Diogo de Souza Lino
- Laboratory of Exercise Physiology, Department of Physiological Sciences, Center of Biological and Health Sciences, Interinstitutional Post-Graduate Program in Physiological Sciences, Federal University of São Carlos – UFSCar, São Carlos, Brazil
| | - Daiana Vianna
- Laboratory of Nutritional Biochemistry, Department of Food and Experimental Nutrition, University of São Paulo - USP, São Paulo, Brazil
| | - Jorge Camargo Oishi
- Laboratory of Pharmacology, Department of Physiological Sciences, Center of Biological and Health Sciences, Interinstitutional Post-Graduate Program of Physiological Sciences, Federal University of São Carlos – UFSCar, São Carlos, Brazil
| | - Markus Vinicius Campos Souza
- Physical Education Course, Department of Sports Science, Post-Graduate Program in Physical Education, Federal University of Triângulo Mineiro, Uberaba, Brazil
| | - Leandro Dias Ruffoni
- Laboratory of Neuroendocrinology, Department of Physiological Sciences, Center of Biological and Health Sciences, Interinstitutional Post-Graduate Program of Physiological Sciences, Federal University of São Carlos – UFSCar, São Carlos, Brazil
| | - Cecília Tardivo Marin
- Laboratory of Exercise Physiology, Department of Physiological Sciences, Center of Biological and Health Sciences, Interinstitutional Post-Graduate Program in Physiological Sciences, Federal University of São Carlos – UFSCar, São Carlos, Brazil
| | - Lucimar Retto da Silva de Avó
- Medical Department, Center of Biological and Health Sciences, Federal University of São Carlos – UFSCar, São Carlos, Brazil
| | - Sérgio Eduardo de Andrade Perez
- Laboratory of Exercise Physiology, Department of Physiological Sciences, Center of Biological and Health Sciences, Interinstitutional Post-Graduate Program in Physiological Sciences, Federal University of São Carlos – UFSCar, São Carlos, Brazil
| | - Gerson Jhonatan Rodrigues
- Laboratory of Pharmacology, Department of Physiological Sciences, Center of Biological and Health Sciences, Interinstitutional Post-Graduate Program of Physiological Sciences, Federal University of São Carlos – UFSCar, São Carlos, Brazil
| | - Júlio Tirapegui
- Laboratory of Nutritional Biochemistry, Department of Food and Experimental Nutrition, University of São Paulo - USP, São Paulo, Brazil
| | - Gilberto Eiji Shiguemoto
- Laboratory of Exercise Physiology, Department of Physiological Sciences, Center of Biological and Health Sciences, Interinstitutional Post-Graduate Program in Physiological Sciences, Federal University of São Carlos – UFSCar, São Carlos, Brazil
- * E-mail:
| |
Collapse
|
5
|
Fabricio V, Oishi JC, Biffe BG, Ruffoni LDG, Silva KAD, Nonaka KO, Rodrigues GJ. Resveratrol Treatment Normalizes the Endothelial Function and Blood Pressure in Ovariectomized Rats. Arq Bras Cardiol 2017; 108:116-121. [PMID: 28327868 PMCID: PMC5344655 DOI: 10.5935/abc.20170012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Accepted: 11/21/2016] [Indexed: 12/18/2022] Open
Abstract
Background: Despite knowing that resveratrol has effects on blood vessels, blood pressure and that phytostrogens can also improve the endothelium-dependent relaxation/vasodilation, there are no reports of reveratrol's direct effect on the endothelial function and blood pressure of animals with estrogen deficit (mimicking post-menopausal increased blood pressure). Objective: To verify the effect of two different periods of preventive treatment with resveratrol on blood pressure and endothelial function in ovariectomized young adult rats. Methods: 3-month old female Wistar rats were used and distributed in 6 groups: intact groups with 60 or 90 days, ovariectomized groups with 60 or 90 days, and ovariectomized treated with resveratrol (10 mg/kg of body weight per day) for 60 or 90 days. The number of days in each group corresponds to the duration of the experimental period. Vascular reactivity study was performed in abdominal aortic rings, systolic blood pressure was measured and serum nitric oxide (NO) concentration was quantified. Results: Ovariectomy induced blood pressure increase 60 and 90 days after surgery, whereas the endothelial function decreased only 90 days after surgery, with no difference in NO concentration among the groups. Only longer treatment (90 days) with resveratrol was able to improve the endothelial function and normalize blood pressure. Conclusion: Our results suggest that 90 days of treatment with resveratrol is able to improve the endothelial function and decrease blood pressure in ovariectomized rats. Fundamentos: Apesar de se saber que o resveratrol apresenta efeitos sobre a pressão arterial e os vasos sanguíneos, e que os fitoestrógenos podem melhorar o relaxamento/vasodilatação dependente do endotélio, não há relatos do efeito direto do resveratrol sobre a pressão arterial e a função endotelial em animais com deficiência de estrógeno (mimetizando a pressão arterial aumentada pós-menopausa). Objetivo: Verificar o efeito de dois diferentes períodos de tratamento preventivo com resveratrol sobre a pressão arterial e a função endotelial em ratas adultas jovens ovariectomizadas. Métodos: Foram utilizadas ratas Wistar com 3 meses de idade, distribuídas em 6 grupos: grupos intactas com 60 ou 90 dias, grupos ovariectomizadas com 60 ou 90 dias, grupos ovariectomizadas e tratadas com resveratrol na dose de 10mg/kg de massa corporal por dia, durante 60 ou 90 dias, sendo o número de dias em cada grupo relativo à duração do período experimental. Foi realizado um estudo de reatividade vascular em anéis da aorta abdominal, mensurada a pressão arterial sistólica e quantificada a concentração sérica de óxido nítrico (NO). Resultados: A ovariectomia induziu aumento da pressão arterial 60 e 90 dias após a cirurgia, enquanto a função endotelial decaiu apenas após 90 dias, e não houve diferença na concentração de NO entre os grupos. Apenas o tratamento prolongado com resveratrol (90 dias) foi capaz de melhorar a função endotelial e normalizar a pressão arterial. Conclusão: Nossos resultados sugerem que o tratamento por 90 dias com resveratrol é capaz de melhorar a função endotelial e diminuir a pressão sanguínea em ratas ovariectomizadas.
Collapse
Affiliation(s)
- Victor Fabricio
- Universidade Federal de São Carlos (UFSCar), São Carlos, SP - Brazil
| | | | | | | | | | | | | |
Collapse
|
6
|
Buzinari TC, Oishi JC, De Moraes TF, Vatanabe IP, Selistre-de-Araújo HS, Pestana CR, Rodrigues GJ. Treatment with sodium nitroprusside improves the endothelial function in aortic rings with endothelial dysfunction. Eur J Pharm Sci 2017; 105:144-149. [DOI: 10.1016/j.ejps.2017.04.022] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 03/27/2017] [Accepted: 04/25/2017] [Indexed: 11/26/2022]
|
7
|
Oishi JC, Buzinnari TC, Pestana CR, De Moraes TF, Vatanabe IP, Wink DA, da Silva RS, Bendhack LM, Rodrigues GJ. In vitro Treatment with cis-[Ru(H-dcbpy-)2(Cl)(NO)] Improves the Endothelial Function in Aortic Rings with Endothelial Dysfunction. J Pharm Pharm Sci 2016; 18:696-704. [PMID: 26670366 DOI: 10.18433/j3cc9k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
PURPOSE The ruthenium complex cis-[Ru(H-dcbpy-)2(Cl)(NO)] (DCBPY) is a nitric oxide (NO) donor and studies suggested that the ruthenium compounds can inactivate O2-. The aim of this study is to test if DCBPY can revert and/or prevent the endothelial dysfunction. METHODS Normotensive (2K) and hypertensive (2K-1C) wistar rats were used. To vascular reactivity study, thoracic aortas were isolated, rings with intact endothelium were incubated with: DCBPY: 0.1; 1 and 10μM, DCBPY plus hydroxocobalin (NO scavenger) or tempol during 30 minutes, and concentration effect curves to acetylcholine were performed. The potency values (pD2) and maximum effect (ME) were analyzed. The O2- was generated using hypoxantine xantine oxidase and the reduction of cytochrome c, NO consumption by O2- and the effect in avoid NO consumption was measured. RESULTS In 2K-1C DCBPY at 0.1; 1 or 10μM improved the relaxation endothelium dependent induced by acetylcholine in aortic rings compared to control 2K-1C, and also improved ME. In rings from 2K incubation with DCBPY (0.1; 1.0 and 10 μM) did not change pD2 or ME. Incubation with 0.1 μM of DCBPY plus hydroxocobalamin did not modify the potency and ME in 2K-1C compared to DCBPY (0.1 μM). DCBPY and SOD inhibits the reduction of cytochrome c and inhibited the NO consumption by O2-, showing that O2- has been removed from the solution. CONCLUSION Our results suggest that DCBPY at a lower concentration (0.1 µM) is not an NO generator, but can inactivate superoxide and improves the endothelial function.
Collapse
Affiliation(s)
- Jorge Camargo Oishi
- Departamento de Ciências Fisiológicas, Universidade Federal de São Carlos, Brazil
| | | | | | | | | | | | | | | | | |
Collapse
|
8
|
Pestana CR, Oishi JC, Salistre-Araújo HS, Rodrigues GJ. Inhibition of autophagy by chloroquine stimulates nitric oxide production and protects endothelial function during serum deprivation. Cell Physiol Biochem 2015; 37:1168-77. [PMID: 26402856 DOI: 10.1159/000430240] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/27/2015] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS Autophagy plays a fundamental role in cell survival under stress conditions such as nutrient deprivation. Decreased nitric oxide (NO) production, which may contribute to vascular dysfunction, is one of the consequences of autophagy in endothelial cells. The antimalarial drug chloroquine (CLQ) inhibits autophagy by blocking autophagosome formation and has been proposed as adjuvant chemotherapy in other diseases. METHODS Autophagy was induced by serum deprivation in Human Umbilical Vascular Endothelial Cells (HUVEC) as demonstrated by formation of Acidic Vesicular Organelles (AVOs), conversion of Microtubule-associated protein 1 light chain (LC3), and Sequestosome-1 (SQTM1/p62) degradation. Using endothelium-dependent vasorelaxation assays, intracellular NO production in an ex vivo rat aortic ring model pre-constricted with phenylephrine was estimated along with DAF-2 DA cell membrane-permeable NO sensitive fluorescent dye. RESULTS The inhibition of autophagy by CLQ restored NO levels, protected against superoxide generation and preserved morphology as well as proliferation of HUVEC under serum deprivation. Interestingly, the incubation of rat aortic rings with CLQ resulted in endothelium-dependent relaxation mediated by the increase of NO. CONCLUSION These findings emphasize the importance of autophagy in endothelial function and demonstrate the potential use of autophagy inhibitors to protect vascular function during nutrient deprivation.
Collapse
|
9
|
Oliveira SA, Chuffa LGA, Fioruci-Fontanelli BA, Lizarte Neto FS, Novais PC, Tirapelli LF, Oishi JC, Takase LF, Stefanini MA, Martinez M, Martinez FE. Apoptosis of Purkinje and granular cells of the cerebellum following chronic ethanol intake. Cerebellum 2015; 13:728-38. [PMID: 25129034 DOI: 10.1007/s12311-014-0591-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Ethanol alters motricity, learning, cognition, and cellular metabolism in the cerebellum. We evaluated the effect of ethanol on apoptosis in Golgi, Purkinje, and granule cells of the cerebellum in adult rats. There were two groups of 20 rats: a control group that did not consume ethanol and an experimental group of UChA rats that consumed ethanol at 10% (<2 g ethanol/kg body weight/day). At 120 days old, rats were anesthetized and decapitated, and their cerebella were collected and fixed. Cerebellar sections were subjected to immunohistochemistry for terminal deoxynucleotide transferase dUTP nick end labeling (TUNEL), caspase-3, X-linked inhibitor of apoptosis protein (XIAP), and insulin-like growth factor 1-receptor (IGF-1R); real-time PCR (RT-PCR) to determine caspase-3, XIAP, and IGF-1R gene expression; and transmission electron microscopy (TEM). We identified fragmentation of DNA and an increase in caspase-3 protein and XIAP in Purkinje cells, whereas granule cells exhibited increased caspase-3 and XIAP. IGF-1R expression was unchanged. There was no significant difference in gene expression of caspase-3, XIAP, and IGF-1R. There were an increase in lipid droplets, a reduction in the cellular cytoplasm in electron-dense nuclei, and changes in the myelin sheath in the cerebellar cortex. In conclusion, our data demonstrated that ethanol induced apoptosis in the Purkinje and granule cells of the cerebellum of adult UChA rats.
Collapse
Affiliation(s)
- Suelen A Oliveira
- Graduate Program in General and Applied Biology, Institute of Bioscience, Univ. Estadual Paulista (UNESP), Botucatu, SP, 18618-970, Brazil
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Duarte FO, Sene-Fiorese M, Cheik NC, Maria ASLS, de Aquino AE, Oishi JC, Rossi EA, Garcia de Oliveira Duarte AC, Dâmaso AR. Food restriction and refeeding induces changes in lipid pathways and fat deposition in the adipose and hepatic tissues in rats with diet-induced obesity. Exp Physiol 2012; 97:882-94. [PMID: 22467759 DOI: 10.1113/expphysiol.2011.064121] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The aim of this study was to determine the effects of successive cycles of a moderately restrictive diet and refeeding with a high-fat diet on the metabolism of the adipose and hepatic tissues of obese rats. Rats were assigned to the following groups: a chow diet; a high-fat diet; a moderate caloric restriction; or a moderate caloric restriction plus refeeding. Some animals in each group were given [1-(14)C]triolein intragastrically, while others received an intraperitoneal injection of 3 mCi (3)H(2)O. All animals were killed by decapitation. The retroperitoneal, visceral epididymal and omental white adipose tissues, brown adipose tissue, liver and blood were immediately removed. The lipid uptake from the diet, in vivo rate of lipogenesis, percentage of fat, lipid profile and leptin concentration were analysed. The high-fat diet promoted an increase in fatty liver (P ≤ 0.05), adiposity mass (P ≤ 0.05) and the plasma concentration of leptin (P ≤ 0.05) and a decreased lipid uptake in white adipose tissue depots (P ≤ 0.05) in relation to the chow diet. The moderate caloric restriction did not reverse the changes promoted by the high-fat diet but induced a small decrease in adiposity, which was reversed after refeeding, and the animals maintained a dyslipidaemic profile and high fat deposition in the liver. We can conclude that the high-fat diet and subsequent moderate caloric restriction plus refeeding increased the risks of developing visceral obesity, dyslipidaemia and non-alcoholic fatty liver disease, which suggests that this type of experimental protocol can be used to study mechanisms related to the metabolic syndrome.
Collapse
Affiliation(s)
- Fernanda Oliveira Duarte
- Departamento de Educação Física e Motricidade-DEFMH, Universidade Federal de São Carlos-UFSCar Rodovia Washington Luís, Km 235-SP-310, São Carlos-São Paulo-Brasil, CEP: 13565-905.
| | | | | | | | | | | | | | | | | |
Collapse
|