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Rodrigues Moro C, Abreu EDL, Kanaan SHH, Márquez A, Uranga-Ocio JA, Rossoni LV, Vassallo DV, Miguel-Castro M, Wiggers GA. Egg white hydrolysate protects white adipose tissue against metabolic insult in deoxycorticosterone acetate-salt rats. Br J Nutr 2024:1-14. [PMID: 38410884 DOI: 10.1017/s0007114524000552] [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] [Indexed: 02/28/2024]
Abstract
The purpose of this study was to investigate the effect of an egg white hydrolysate (EWH) to protect white adipose tissue damage from cardiometabolic changes induced by severe hypertension. Male Wistar rats were uninephrectomised and divided: SHAM (weekly subcutaneous vehicle (mineral oil + propylene glycol, 1:1)), SHAM + EWH (subcutaneous vehicle plus EWH via gavage, 1 g/kg per day), DOCA (deoxycorticosterone acetate diluted in vehicle subcutaneously weekly in subsequent doses of 20 mg/kg -1st week, 12 mg/kg - 2–3th week, and 6 mg/kg -4–8th week, respectively, plus 1 % NaCl and 0·2 % KCl in drinking water), and DOCA + EWH. Body weight gain, food and water intake, glucose and lipid metabolism were evaluated. Oxidative stress was assessed by biochemical assay and immunofluorescence for NOX-1, nuclear factor kappa B (NFκB), and caspase-3 in retroperitoneal white adipose tissue (rtWAT). Proinflammatory cytokines (IL-6 and 1β), CD163+ macrophage infiltration, and immunohistochemistry for TNFα and uncoupling protein-1 were evaluated, as well as histological analysis on rtWAT. Glutathione peroxidase and reductase were also determined in plasma. EWH showed hypocholesterolemic, antioxidant, anti-inflammatory, and anti-apoptotic properties in the arterial hypertension DOCA-salt model. The results demonstrated the presence of functional changes in adipose tissue function by a decrease in macrophage infiltration and in the fluorescence intensity of NFκB, NOX-1, and caspase-3. A reduction of proinflammatory cytokines and restoration of antioxidant enzymatic activity and mitochondrial oxidative damage by reducing uncoupling protein-1 fluorescence intensity were also observed. EWH could be used as a potential alternative therapeutic strategy in the treatment of cardiometabolic complications associated with malignant secondary arterial hypertension.
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Affiliation(s)
- Camila Rodrigues Moro
- Cardiovascular Physiology Laboratory, Universidade Federal do Pampa, BR 472, Km 592, Uruguaiana, Rio Grande do Sul, Brazil
| | - Edina da Luz Abreu
- Cardiovascular Physiology Laboratory, Universidade Federal do Pampa, BR 472, Km 592, Uruguaiana, Rio Grande do Sul, Brazil
| | - Samia Hassan Husein Kanaan
- Cardiovascular Physiology Laboratory, Universidade Federal do Pampa, BR 472, Km 592, Uruguaiana, Rio Grande do Sul, Brazil
| | - Antonio Márquez
- Department of Ciencias Básicas de la Salud, Universidad Rey Juan Carlos (URJC), Avda. de Atenas s/n, 28032 Alcorcón, Spain and High Performance Research Group in Physiopathology and Pharmacology of the Digestive System (NeuGut), URJC, Alcorcón, Spain
| | - Jose Antonio Uranga-Ocio
- Department of Ciencias Básicas de la Salud, Universidad Rey Juan Carlos (URJC), Avda. de Atenas s/n, 28032 Alcorcón, Spain and High Performance Research Group in Physiopathology and Pharmacology of the Digestive System (NeuGut), URJC, Alcorcón, Spain
| | - Luciana Venturini Rossoni
- Department of Physiology and Biophysics, Institute of Biomedical Science, University of São Paulo, Av. Prof. Lineu Prestes, nº 2415, São Paulo, Brazil
| | - Dalton Valentim Vassallo
- Cardiac Electromechanical and Vascular Reactivity Laboratory, Universidade Federal do Espírito Santo, Av. Marechal Campos, 1468, Vitória, Espírito Santo, Brazil
| | - Marta Miguel-Castro
- Instituto de Investigación en Ciencias de la Alimentación (CIAL, CSIC-UAM.), C/Nicolás Cabrera, 9, Campus Universitario de Cantoblanco, Madrid, Spain
| | - Giulia Alessandra Wiggers
- Cardiovascular Physiology Laboratory, Universidade Federal do Pampa, BR 472, Km 592, Uruguaiana, Rio Grande do Sul, Brazil
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López-Miranda V, Soto-Montenegro ML, Uranga-Ocio JA, Vera G, Herradón E, González C, Blas C, Martínez-Villaluenga M, López-Pérez AE, Desco M, Abalo R. Effects of chronic dietary exposure to monosodium glutamate on feeding behavior, adiposity, gastrointestinal motility, and cardiovascular function in healthy adult rats. Neurogastroenterol Motil 2015; 27:1559-70. [PMID: 26303145 DOI: 10.1111/nmo.12653] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Accepted: 07/15/2015] [Indexed: 01/29/2023]
Abstract
BACKGROUND Monosodium glutamate (MSG) is a flavor-enhancer widely used as a food additive. However, its safe dietary concentration and its toxicity, including its possible implication in the recent metabolic syndrome pandemia, is still a controversial issue. Therefore, a deep knowledge of its effects upon regular dietary use is needed. Our aim was to evaluate the effects of chronic exposure to MSG on feeding behavior, abdominal fat, gastrointestinal motility, and cardiovascular function in rats. METHODS Two groups of adult male Wistar rats were used: control and treated with MSG (4 g/L in drinking water) for 6 weeks. Different functional parameters were determined and the histological structure was analyzed in tissues of interest. KEY RESULTS Compared to control animals, chronic MSG increased water intake but did not modify food ingestion or body weight gain. Neither the abdominal fat volume nor the fat fraction, measured by magnetic resonance imaging, was modified by MSG. Monosodium glutamate did not alter general gastrointestinal motility, but significantly increased the colonic response to mechanical stimulation. It slightly reduced endothelium-dependent relaxation in aorta, without significantly modifying any other cardiovascular parameters. No significant histological alterations were detected in salivary glands, intestinal wall, aorta, heart, and kidney. CONCLUSIONS & INFERENCES Chronic treatment with MSG in the adult rat increased water intake. This supports its potential to improve acceptance of low-fat regimens and to increase hydration in the elderly and sportspeople, often at risk of dehydration. Changes in colonic contractility and cardiovascular function could have some long-term repercussions warranting further research.
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Affiliation(s)
- V López-Miranda
- Área de Farmacología y Nutrición y Unidad Asociada al Instituto de Química Médica(IQM) y al Centro de Investigación de Alimentos (CIAL) del Consejo Superior de Investigaciones Científicas (CSIC), Universidad Rey Juan Carlos, Alcorcón, Madrid, Spain
| | - M L Soto-Montenegro
- Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain.,CIBER de Salud Mental (CIBERSAM), Madrid, Spain
| | - J A Uranga-Ocio
- Área de Histología y Anatomía Patológica y Unidad Asociada al Centro de Investigación de Alimentos (CIAL), Universidad Rey Juan Carlos, Alcorcón, Madrid, Spain
| | - G Vera
- Área de Farmacología y Nutrición y Unidad Asociada al Instituto de Química Médica(IQM) y al Centro de Investigación de Alimentos (CIAL) del Consejo Superior de Investigaciones Científicas (CSIC), Universidad Rey Juan Carlos, Alcorcón, Madrid, Spain
| | - E Herradón
- Área de Farmacología y Nutrición y Unidad Asociada al Instituto de Química Médica(IQM) y al Centro de Investigación de Alimentos (CIAL) del Consejo Superior de Investigaciones Científicas (CSIC), Universidad Rey Juan Carlos, Alcorcón, Madrid, Spain
| | - C González
- Área de Farmacología y Nutrición y Unidad Asociada al Instituto de Química Médica(IQM) y al Centro de Investigación de Alimentos (CIAL) del Consejo Superior de Investigaciones Científicas (CSIC), Universidad Rey Juan Carlos, Alcorcón, Madrid, Spain
| | - C Blas
- Área de Farmacología y Nutrición y Unidad Asociada al Instituto de Química Médica(IQM) y al Centro de Investigación de Alimentos (CIAL) del Consejo Superior de Investigaciones Científicas (CSIC), Universidad Rey Juan Carlos, Alcorcón, Madrid, Spain
| | - M Martínez-Villaluenga
- Área de Farmacología y Nutrición y Unidad Asociada al Instituto de Química Médica(IQM) y al Centro de Investigación de Alimentos (CIAL) del Consejo Superior de Investigaciones Científicas (CSIC), Universidad Rey Juan Carlos, Alcorcón, Madrid, Spain
| | - A E López-Pérez
- Unidad del Dolor, Servicio de Anestesiología, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - M Desco
- Dept. Bioingeniería e Ingeniería Aeroespacial, Universidad Carlos III de Madrid, Madrid, Spain
| | - R Abalo
- Área de Farmacología y Nutrición y Unidad Asociada al Instituto de Química Médica(IQM) y al Centro de Investigación de Alimentos (CIAL) del Consejo Superior de Investigaciones Científicas (CSIC), Universidad Rey Juan Carlos, Alcorcón, Madrid, Spain
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