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Padilla P, Estévez M, Andrade MJ, Peña FJ, Delgado J. Proteomics reveal the protective effects of chlorogenic acid on Enterococcus faecium Q233 in a simulated pro-oxidant colonic environment. Food Res Int 2022; 157:111464. [PMID: 35761697 DOI: 10.1016/j.foodres.2022.111464] [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: 03/28/2022] [Revised: 05/29/2022] [Accepted: 06/01/2022] [Indexed: 11/26/2022]
Abstract
Certain phytochemicals have been found to promote the beneficial effects of probiotic bacteria although the molecular mechanisms of such interactions are poorly understood. The objective of the present study was to evaluate the impact of the exposure to 0.5 mM chlorogenic acid (CA) on the redox status and proteome of Enterococcus faecium isolated from cheese and challenged with 2.5 mM hydrogen peroxide (H2O2). The bacterium was incubated in anaerobic conditions for 48 h at 37 °C. CA exposure led to a more intense oxidative stress and accretion of bacterial protein carbonyls than those induced by H2O2. The oxidative damage to bacterial proteins was even more severe in the bacterium treated with both CA and H2O2, yet, such combination led to a strengthening of the antioxidant defenses, namely, a catalase-like activity. The proteomic study indicated that H2O2 caused a decrease in energy supply and the bacterium responded by reinforcing the membrane and wall structures and counteracting the redox and pH imbalance. CA stimulated the accretion of proteins related to translation and transcription regulators, and hydrolases. This phytochemical was able to counteract certain proteomic changes induced by H2O2 (i.e. increase of ATP binding cassete (ABC) transporter complex) and cause the increase of Rex, a redox-sensitive protein implicated in controlling metabolism and responses to oxidative stress. Although this protection should be confirmed under in vivo conditions, such effects point to benefits in animals or humans affected by disorders in which oxidative stress plays a major role.
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Affiliation(s)
- P Padilla
- Food Technology and Quality (TECAL), Institute of Meat and Meat Products (IPROCAR), University of Extremadura, Cáceres, Spain; Food Hygiene and Safety (HISEALI), Institute of Meat and Meat Products (IPROCAR), University of Extremadura, Cáceres, Spain
| | - M Estévez
- Food Technology and Quality (TECAL), Institute of Meat and Meat Products (IPROCAR), University of Extremadura, Cáceres, Spain.
| | - M J Andrade
- Food Hygiene and Safety (HISEALI), Institute of Meat and Meat Products (IPROCAR), University of Extremadura, Cáceres, Spain
| | - F J Peña
- Spermatology Laboratory, University of Extremadura, Cáceres, Spain
| | - J Delgado
- Food Hygiene and Safety (HISEALI), Institute of Meat and Meat Products (IPROCAR), University of Extremadura, Cáceres, Spain
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2
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Carvalho L, Pérez-Palacios T, Caballero D, Antequera T, Madruga M, Estévez M. Computer vision techniques on magnetic resonance images for the non-destructive classification and quality prediction of chicken breasts affected by the White-Striping myopathy. J FOOD ENG 2021. [DOI: 10.1016/j.jfoodeng.2021.110633] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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3
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Estévez M. Critical overview of the use of plant antioxidants in the meat industry: Opportunities, innovative applications and future perspectives. Meat Sci 2021; 181:108610. [PMID: 34147961 DOI: 10.1016/j.meatsci.2021.108610] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 06/08/2021] [Accepted: 06/14/2021] [Indexed: 12/19/2022]
Abstract
The number of articles devoted to study the effect of "natural antioxidants" on meat systems has remarkably increased in the last 10 years. Yet, a critical review of literature reveals recurrent flaws in regards to the rationale of the application, the experimental design, the characterisation of the plant sources, the discussion of the molecular mechanisms and of the potential benefits. The selection of the appropriate source of these antioxidants and the identification of their bioactive constituents, are essential to understand their mode of action and set effective and safe doses. The methodological approach should also be planned with care as the recorded effects and main conclusions largely depend on the accuracy and specificity of the methods. This article aims to critically review the recent advances in the application of plant antioxidants in meat and meat products and briefly covers current trends of innovative application and future trends.
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Affiliation(s)
- M Estévez
- Meat and Meat Products Research Institute (IPROCAR), Food Technology, University of Extremadura, 10003 Cáceres, Spain.
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4
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Morcuende D, Vallejo-Torres C, Ventanas S, Martínez SL, Ruiz SC, Estévez M. Effectiveness of Sprayed Bioactive Fruit Extracts in Counteracting Protein Oxidation in Lamb Cutlets Subjected to a High-Oxygen MAP. Foods 2020; 9:E1715. [PMID: 33266450 PMCID: PMC7700604 DOI: 10.3390/foods9111715] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 11/15/2020] [Accepted: 11/19/2020] [Indexed: 12/16/2022] Open
Abstract
High-oxygen packaging atmosphere (High-Ox-MAP) promotes meat protein oxidation and leads to texture deterioration. This study was conceived to assess the extent to which sprayed fruit extracts could inhibit the oxidative damage to proteins in lamb cutlets subjected to High-Ox-MAP (10 days/4 °C) and subsequent roasting (10 min/180 °C). Extracts from oaknut (Quercus ilex subsp. ballota; QI), rose hips (Rosa canina L.; RC), common hawthorn (Crataegus monogyna Jacq.; CM) and strawberry tree (Arbutus unedo L.; AU) were characterized for bioactive compounds (phenolic subclasses, tocopherols and ascorbic acid) and in vitro bioactivities. While the four fruits showed relevant antioxidant potential, CM had the highest phenolics and tocopherol content and that was reflected in efficient antiradical activity. The in vitro activity of this fruit to inhibit meat protein oxidation was, however, lower than that displayed by the other fruits. Taking the results altogether, CM was also found to be most efficient in protecting lamb cutlets from lipid oxidation. All fruits were able to inhibit thiols oxidation except RC, which seemed to reduce protein thiols. Among fruits, QI was the most efficient in protecting lamb cutlets against protein carbonylation as a plausible involvement of ellagitannins. The inhibition of protein oxidation by QI was reflected in significantly lower instrumental hardness in cooked lamb cutlets. Spraying lamb cutlets with extracts from QI, RC and CM improved consumers' purchase intention after chilled storage. This antioxidant strategy seems to be a feasible and efficient solution to the pro-oxidative effects caused by High-Ox-MAP in red meat.
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Affiliation(s)
- D. Morcuende
- IPROCAR Research Institute, Food Technology, University of Extremadura, 10003 Cáceres, Spain; (D.M.); (S.V.)
| | - C. Vallejo-Torres
- Food Engineering School, Technical State University of Quevedo, 120305 Quevedo, Ecuador;
| | - S. Ventanas
- IPROCAR Research Institute, Food Technology, University of Extremadura, 10003 Cáceres, Spain; (D.M.); (S.V.)
| | - S. L. Martínez
- Meat Quality Laboratory, Santiago del Estero National University, G4200 Santiago del Estero, Argentina;
| | - S. C. Ruiz
- National Institute of Agricultural Technology (INTA), 16003 Santiago del Estero, Argentina;
| | - M. Estévez
- IPROCAR Research Institute, Food Technology, University of Extremadura, 10003 Cáceres, Spain; (D.M.); (S.V.)
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5
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Petracci M, Soglia F, Madruga M, Carvalho L, Ida E, Estévez M. Wooden-Breast, White Striping, and Spaghetti Meat: Causes, Consequences and Consumer Perception of Emerging Broiler Meat Abnormalities. Compr Rev Food Sci Food Saf 2019; 18:565-583. [PMID: 33336940 DOI: 10.1111/1541-4337.12431] [Citation(s) in RCA: 198] [Impact Index Per Article: 39.6] [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: 09/24/2018] [Revised: 01/14/2019] [Accepted: 01/14/2019] [Indexed: 01/10/2023]
Abstract
Ten years ago, the occurrence of macroscopic defects in breasts muscles from fast-growing broilers challenged producers and animal scientists to label and characterize myopathies wholly unknown. The distinctive white striations in breasts affected by white striping disorder, the presence of out-bulging and pale areas of hardened consistency in the so-called wooden breast, and the separation of the fiber bundles in breasts labelled as spaghetti meat, made these myopathies easily identified in chicken carcasses. Yet, the high incidence of these myopathies and the increasing concern by producers and retailers led to an unprecedented flood of questions on the causes and consequences of these abnormal chicken breasts. This review comprehensively collects the most relevant information from studies aimed to understand the pathological mechanisms of these myopathies, their physicochemical and histological characterization and their impact on meat quality and consumer's preferences. Today, it is known that the occurrence is linked to fast-growth rates of the birds and their large breast muscles. The muscle hypertrophy along with an unbalanced growth of supportive connective tissue leads to a compromised blood supply and hypoxia. The occurrence of oxidative stress and mitochondrial dysfunction leads to lipidosis, fibrosis, and overall myodegeneration. Along with the altered appearance, breast muscles affected by the myopathies display poor technological properties, impaired texture properties, and reduced nutritional value. As consumer's awareness on the occurrence of these abnormalities and the concerns on animal welfare arise, efforts are made to inhibit the onset of the myopathies or alleviate the severity of the symptoms. The lack of fully effective dietary strategies leads scientists to propose whether "slow" production systems may alternatively provide with poultry meat free of these myopathies.
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Affiliation(s)
- M Petracci
- Dept. of Agricultural and Food Sciences, Alma Mater Studiorum, Univ. of Bologna, Piazza Goidanich 60, 47521, Cesena, Italy
| | - F Soglia
- Dept. of Agricultural and Food Sciences, Alma Mater Studiorum, Univ. of Bologna, Piazza Goidanich 60, 47521, Cesena, Italy
| | - M Madruga
- Postgraduate program in Food Science and Technology. Dept. of Food Engineering, Federal Univ. of Paraiba, João Pessoa, Paraíba, Brazil
| | - L Carvalho
- Postgraduate program in Food Science and Technology. Dept. of Food Engineering, Federal Univ. of Paraiba, João Pessoa, Paraíba, Brazil
| | - Elza Ida
- Dept. of Food Technology, Londrina State Univ., Londrina, Brazil
| | - M Estévez
- Meat and Meat Products Research Inst., TECAL Research Group, Univ. of Extremadura, Avda. Universidad s/n, 10003, Cáceres, Spain
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Arcanjo NMO, Luna C, Madruga MS, Estévez M. Antioxidant and pro-oxidant actions of resveratrol on human serum albumin in the presence of toxic diabetes metabolites: Glyoxal and methyl-glyoxal. Biochim Biophys Acta Gen Subj 2018; 1862:1938-1947. [PMID: 29902553 DOI: 10.1016/j.bbagen.2018.06.007] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 05/08/2018] [Accepted: 06/08/2018] [Indexed: 12/23/2022]
Abstract
Methylglyoxal (MGO) and glyoxal (GO) are attracting considerable attention because of their role in the onset of diabetes symptoms. Therefore, to comprehend the molecular fundamentals of their pathological actions is of the utmost importance. In this study, the molecular interactions between resveratrol (RES) and human serum albumin (HSA) and the ability of the stilbene to counteract the oxidative damage caused by pathological concentrations of MGO and GO to the human plasma protein, was assessed. The oxidation of Cys34 in HSA as well as the formation of specific protein semialdehydes AAS (α-aminoadipic), GGS (γ-glutamic) and the accumulation of Advanced Glycation End-products (AGEs) was investigated. Resveratrol was found to neutralize both α-dicarbonyls by forming adducts detected by HESI-Orbitrap-MS. This antioxidant action was manifested in a significant reduction of AGEs. However, RES-α-dicarbonyl conjugates oxidized Cys34 and lysine, arginine and/or proline by a nucleophilic attack on SH and ε-NH groups in HSA. The formation of specific semialdehydes in HSA after incubation with GO and MGO at pathological concentrations was reported for the first time in this study, and may be used as early and specific biomarkers of the oxidative stress undergone by diabetic patients. The pro-oxidative role of the RES-α-dicarbonyl conjugates should be further investigated to clarify whether this action leads to positive or harmful clinical consequences. The biological relevance of human protein carbonylation as a redox signaling mechanism and/or as a reflection of oxidative damage and disease should also be studied in future works.
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Affiliation(s)
- N M O Arcanjo
- Department of Food Engineering, Federal University of Paraiba, Joao Pessoa CEP 58051-900, PB, Brazil
| | - C Luna
- Servicio Extremeño de Salud, SES, Gobierno de Extremadura, Cáceres, Spain
| | - M S Madruga
- Department of Food Engineering, Federal University of Paraiba, Joao Pessoa CEP 58051-900, PB, Brazil
| | - M Estévez
- IPROCAR Research Institute, Food Technology, University of Extremadura, 10003 Cáceres. Spain.
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7
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Akcan T, Gökçe R, Asensio M, Estévez M, Morcuende D. Acorn ( Quercus spp.) as a novel source of oleic acid and tocopherols for livestock and humans: discrimination of selected species from Mediterranean forest. J Food Sci Technol 2017; 54:3050-3057. [PMID: 28974789 PMCID: PMC5602967 DOI: 10.1007/s13197-017-2740-3] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 05/31/2017] [Accepted: 06/08/2017] [Indexed: 11/29/2022]
Abstract
The aim of the present work was to characterization and compare acorns from selected Quercus spp. from the Mediterranean forest in Spain, namely, Portuguese oak (QF, Quercus faginea Lam.), Cork oak (QS, Quercus suber L.), Pyrenean oak (QP, Quercus pyrenaica Wild), Kermes oak (QC, Quercus coccifera L.), Holm oak (QB, Quercus ilex L. subsp. ballota [Desf.]). All physicochemical attributes varied significantly between species. Fat contents ranged from 1.30 to 4.70 g 100 g-1 fresh matter. The most abundant fatty acids were oleic (62.44, 56.25, 57.46, 48.02, 65.83%), followed by linoleic (16.42, 20.73, 21.30, 25.38, 14.17%) and palmitic (11.69, 14.27, 12.17, 16.22, 12.28) acids in QF, QS, QP, QC and QB species, respectively. The tocopherol content was high in the range of 31.83-45.25 mg kg-1, and γ-tocopherol constituted 67-78% of total tocopherols. Only an effect of the location on γ-tocopherol content in QB was observed. The present results show the potential of different species of acorn to be used as agricultural and food resources and that geographical location plays a secondary role.
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Affiliation(s)
- T. Akcan
- Department of Food Engineering, Faculty of Engineering, Pamukkale University, Denizli, Turkey
| | - R. Gökçe
- Department of Food Engineering, Faculty of Engineering, Pamukkale University, Denizli, Turkey
| | - M. Asensio
- SIPA, Universidad de Extremadura, Av. de la Universidad s/n, 10003 Cáceres, Spain
| | - M. Estévez
- IPROCAR Research Institute, TECAL Research Group, Universidad de Extremadura, Av. de la Universidad s/n, 10003 Cáceres, Spain
| | - D. Morcuende
- IPROCAR Research Institute, TECAL Research Group, Universidad de Extremadura, Av. de la Universidad s/n, 10003 Cáceres, Spain
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8
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Bermejo C, Martínez-Ten P, Ruíz-López L, Estévez M, Gil MM. Classification of Uterine Anomalies by 3-Dimensional Ultrasonography Using ESHRE/ESGE Criteria: Interobserver Variability. Reprod Sci 2017; 25:740-747. [DOI: 10.1177/1933719117725825] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- C. Bermejo
- Delta Ecografía, Centro de Diagnóstico por la Imagen en Obstetricia, Ginecología y Mama, Madrid, Spain
| | - P. Martínez-Ten
- Delta Ecografía, Centro de Diagnóstico por la Imagen en Obstetricia, Ginecología y Mama, Madrid, Spain
| | - L. Ruíz-López
- Gerencia de Atención Primaria de Toledo, SESCAM, Toledo, Spain
| | - M. Estévez
- Delta Ecografía, Centro de Diagnóstico por la Imagen en Obstetricia, Ginecología y Mama, Madrid, Spain
| | - M. M. Gil
- Delta Ecografía, Centro de Diagnóstico por la Imagen en Obstetricia, Ginecología y Mama, Madrid, Spain
- Obstetrics and Gynecology Department, Hospital Universitario de Torrejón, Torrejón de Ardoz, Madrid, Spain
- Universidad Francisco de Vitoria, Carretera de Pozuelo a Majadahonda Km 1800, Pozuelo de Alarcón, Madrid, Spain
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9
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Affiliation(s)
- M. Estévez
- IPROCAR Research Institute, University of Extremadura, Caceres, Spain
| | - C. Luna
- Medical Hospital, SES, Gobierno de Extremadura, Badajoz, Spain
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10
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Akcan T, Estévez M, Rico S, Ventanas S, Morcuende D. Hawberry ( Crataegus monogyna Jaqc.) extracts inhibit lipid oxidation and improve consumer liking of ready-to-eat (RTE) pork patties. J Food Sci Technol 2017; 54:1248-1255. [PMID: 28416875 PMCID: PMC5380644 DOI: 10.1007/s13197-017-2578-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 02/26/2017] [Accepted: 02/28/2017] [Indexed: 11/30/2022]
Abstract
The objective of this work was to study the effectiveness of extracts from hawberry (Crataegus monogyna Jacq.) to inhibit lipid oxidation and odor deterioration during processing of ready-to-eat (RTE) pork patties subjected to roasting (180 °C/16 min), chilling (10 days/+3 °C) and reheating in microwave (600 mW/1 min). Acetone extracts of hawberry were chosen based on their total phenolic content (1281.1 ± 84.8 mg gallic acid equivalent (GAE)/100 g fruit) and in vitro antiradical activity (DPPH) (53.33 ± 15.40 g equivalent Trolox per g of fruits). Pork patties treated with increasing concentrations of hawberry extract, 200 and 800 ppm GAE (T2 and T8, respectively) and a control group (T0) of samples, were analyzed for TBARS, volatile carbonyls and odor liking in a consumer test. Hawberry extracts significantly improved the oxidative stability of cooked pork patties keeping TBARS and hexanal counts at basal levels during the whole process. The addition of hawberry phenolic-rich extracts significantly improved the degree of consumer satisfaction regarding the odor of patties. In conclusion, the hawberry extract displayed potential usage as an ingredient with antioxidant properties for the manufacture of high-quality RTE meat products.
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Affiliation(s)
- T. Akcan
- Department of Food Engineering, Faculty of Engineering, Pamukkale University, Denizli, Turkey
| | - M. Estévez
- IPROCAR Research Institute, TECAL Research Group, Universidad de Extremadura, Av. de la Universidad s/n, 10003 Cáceres, Spain
| | - S. Rico
- IPROCAR Research Institute, TECAL Research Group, Universidad de Extremadura, Av. de la Universidad s/n, 10003 Cáceres, Spain
| | - S. Ventanas
- IPROCAR Research Institute, TECAL Research Group, Universidad de Extremadura, Av. de la Universidad s/n, 10003 Cáceres, Spain
| | - D. Morcuende
- IPROCAR Research Institute, TECAL Research Group, Universidad de Extremadura, Av. de la Universidad s/n, 10003 Cáceres, Spain
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11
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Estévez M, Argibay A, Pérez A, Vázquez-Triñanes C, Machado B, Lorenzo R, Sousa A, Villaverde I, Freire M, Rivera A. SAT0316 Neurological Involvement in Patients with Antiphospholipid Syndrome: A Case Series with A Long-Term Follow-Up. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.5882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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12
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Abstract
Poultry and poultry meat are particularly susceptible to oxidative reactions. Oxidation processes have been for decades the focus of animal and meat scientists owing to the negative impact of these reactions on animal growth, performance, and food quality. Lipid oxidation has been recognized a major threat to the quality of processed poultry products. The recent discoveries on the occurrence of protein oxidation in muscle foods have increased the scientific and technological interest in a topic that broadens the horizons of food biochemistry into innovative fields. Furthermore, in recent years we have witnessed a growing interest in consumers on the impact of diet and oxidation on health and aging. Hence, the general description of oxidative reactions as harmful phenomena goes beyond the actual impact on animal production and food quality and reaches the potential influence of oxidized foods on consumer health. Likewise, the current antioxidant strategies aim for the protection of the living tissues, the food systems, and a potential health benefit in the consumer upon ingestion. Along these lines, the application of phytochemicals and other microelements (Se, Cu) with antioxidant potential in the feeds or directly in the meat product are strategies of substantial significance. The present paper reviews in a concise manner the most relevant and novel aspects of the mechanisms and consequences of oxidative reactions in poultry and poultry meat, and describes current antioxidant strategies against these undesirable reactions.
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Affiliation(s)
- M Estévez
- IPROCAR Research Institute. Food Technology, University of Extremadura, 10003, Cáceres, Spain
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13
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Soladoye O, Juárez M, Aalhus J, Shand P, Estévez M. Protein Oxidation in Processed Meat: Mechanisms and Potential Implications on Human Health. Compr Rev Food Sci Food Saf 2015; 14:106-122. [DOI: 10.1111/1541-4337.12127] [Citation(s) in RCA: 299] [Impact Index Per Article: 33.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Accepted: 12/04/2014] [Indexed: 01/07/2023]
Affiliation(s)
- O.P. Soladoye
- Dept. of Food and Bioproduct Science, College of Agriculture and Bioresources; Univ. of Saskatchewan; 51 Campus Drive S7N 5A Saskatoon Canada
- Lacombe Research Centre; Agriculture and Agri-Food Canada; 6000 C and E Trail T4L 1W1 Lacombe Alberta Canada
| | - M.L. Juárez
- Lacombe Research Centre; Agriculture and Agri-Food Canada; 6000 C and E Trail T4L 1W1 Lacombe Alberta Canada
| | - J.L. Aalhus
- Lacombe Research Centre; Agriculture and Agri-Food Canada; 6000 C and E Trail T4L 1W1 Lacombe Alberta Canada
| | - P. Shand
- Dept. of Food and Bioproduct Science, College of Agriculture and Bioresources; Univ. of Saskatchewan; 51 Campus Drive S7N 5A Saskatoon Canada
| | - M. Estévez
- IPROCAR Research Inst; Univ. of Extremadura; 10003 Caceres Spain
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14
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Villaverde A, Morcuende D, Estévez M. Effect of Curing Agents on the Oxidative and Nitrosative Damage to Meat Proteins during Processing of Fermented Sausages. J Food Sci 2014; 79:C1331-42. [DOI: 10.1111/1750-3841.12481] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Accepted: 04/07/2014] [Indexed: 11/26/2022]
Affiliation(s)
- A. Villaverde
- Authors are with TECAL research group; Animal Production and Food Science; Univ. of Extremadura; 10003 Cáceres Spain
| | - D. Morcuende
- Authors are with TECAL research group; Animal Production and Food Science; Univ. of Extremadura; 10003 Cáceres Spain
| | - M. Estévez
- Authors are with TECAL research group; Animal Production and Food Science; Univ. of Extremadura; 10003 Cáceres Spain
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15
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Estévez M, Vargas S, Hagg Lobland HE, de la Isla A, Brostow W, Rogelio Rodríguez J. Characterization of novel dental obturation materials. ACTA ACUST UNITED AC 2013. [DOI: 10.1179/143307507x199399] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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16
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Estévez M, Morcuende D, Ramírez R, Ventanas J, Cava R. Extensively reared Iberian pigs versus intensively reared white pigs for the manufacture of liver pâté. Meat Sci 2013; 67:453-61. [PMID: 22061520 DOI: 10.1016/j.meatsci.2003.11.019] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 11/27/2003] [Accepted: 11/27/2003] [Indexed: 11/27/2022]
Abstract
Physico-chemical characteristics and quality traits of the raw ingredients (muscle cuadriceps femoris, liver and adipose tissue) and the pâtés made from extensively reared Iberian pigs and intensively reared white pigs, were evaluated. The differences found between muscles, livers and adipose tissues from Iberian and white pigs influenced the characteristics of the pâtés. Compared to pâtés from white pigs, pâtés from Iberian pigs had a higher content of heme iron (27.5 μg/g vs 11.5 μg/g; p<0.05) and lower content of non-heme iron (27.5 μg/g vs 33.7 μg/g; p<0.05). Pâtés from Iberian pigs exhibited a darker colour (L (∗):18.6 vs 15.9, p<0.05) with less redness (a (∗) values: 9.1 vs 11.3; p<0.05) and yellowness (b (∗) values: 13.1 vs 14.8, p<0.05). Thus, pâtés from white pigs had higher values of chroma (18.6 vs 15.9, p<0.05) and smaller values of hue (52.5 vs 55.2, p<0.05) that those from Iberian pigs' pâtés. In fatty acid composition, pâtés from white pigs had higher proportions of SFA (37.9% vs 32.8%, p<0.05) and PUFA (14.4% vs 9.6%, p<0.05) than pâtés from Iberian pigs and lower percentages of oleic (53.4% vs 43.6%, p<0.05) and total of MUFA (57.5% vs 47.6%, p<0.05). Pâtés from Iberian pigs had a lower n-6/n-3 values (13.2 vs 17.2; p<0.05).
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Affiliation(s)
- M Estévez
- Faculty of Veterinary, Food Technology, University of Extremadura, Avda/Universidad s/n, 10071 Cáceres, Spain
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Abstract
OBJECTIVES To explore and quantify possible abnormalities in the autonomic cardiovascular regulation in presymptomatic stage of type 2 spinocerebellar ataxia (PS-SCA2). MATERIALS & METHODS Heart rate variability (HRV) for 5-min series of RR intervals was analyzed in 48 PS-SCA2. Autonomic testing included resting recording, standing, Valsalva maneuver, and deep breathing. The results were compared with a group of sex- and age-matched controls. RESULTS Time-and-frequency domain HRV indices were significantly different between PS-SCA2 and control groups. Using two standard diagnostic procedures were identified 4 (8.33%) subjects with severe and 8 (16.66%) subjects with early cardiac autonomic neuropathy in PS-SCA2. CAG index significantly correlated with age (-0.35) and HR (0.31). CONCLUSIONS Our results confirm the presence of cardiovascular autonomic dysfunction in PS-SCA2 subjects.
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Affiliation(s)
- J Montes-Brown
- General Hospital Dr Ernesto Guevara de la Serna, Las Tunas, Cuba.
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18
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Rodríguez-Carpena J, Morcuende D, Estévez M. Partial Replacement of Pork Back-Fat by Vegetable Oils in Burger Patties: Effect on Oxidative Stability and Texture and Color Changes during Cooking and Chilled Storage. J Food Sci 2011; 76:C1025-31. [DOI: 10.1111/j.1750-3841.2011.02327.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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19
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Rodríguez-Carpena JG, Morcuende D, Estévez M. Avocado, sunflower and olive oils as replacers of pork back-fat in burger patties: effect on lipid composition, oxidative stability and quality traits. Meat Sci 2011; 90:106-15. [PMID: 21703779 DOI: 10.1016/j.meatsci.2011.06.007] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2010] [Revised: 06/02/2011] [Accepted: 06/03/2011] [Indexed: 10/18/2022]
Abstract
The present study investigates the effects of avocado, sunflower and olive oils used as back-fat replacers, on the fatty acid composition, oxidative stability, volatiles profile and color and texture properties of cooked pork patties. The vegetable oils modified the fatty acid profiles of the patties by lowering the percentages of SFA (from 36.96% to ~25.30%) and reducing the atherogenic index (from 0.41 to ~0.24). Vegetable oils had higher amounts of antioxidant compounds such as tocopherols (10.8-53.9 mg/100 g) than back-fat (5.9 mg/100 g). Consistently, patties manufactured with the oils had significantly lower amounts of lipid and protein oxidation products than control patties. Avocado oil contributed with specific aroma-active terpenes to patties and had a significant impact on particular color and texture parameters. The results from this study highlight the technological applications of the vegetable oils as food ingredients in the design of healthier meat commodities.
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Affiliation(s)
- J G Rodríguez-Carpena
- Food Science, Faculty of Veterinary, Autonomous University of Nayarit, 63190, Tepic, Nayarit, Mexico
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20
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Rodríguez-Carpena JG, Morcuende D, Estévez M. Avocado by-products as inhibitors of color deterioration and lipid and protein oxidation in raw porcine patties subjected to chilled storage. Meat Sci 2011; 89:166-73. [PMID: 21555188 DOI: 10.1016/j.meatsci.2011.04.013] [Citation(s) in RCA: 137] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2010] [Revised: 03/14/2011] [Accepted: 04/15/2011] [Indexed: 10/18/2022]
Abstract
Processing of avocados generates an important amount of by-products such as peels and seeds that are rich in bioactive substances with proven radical suppressing activities. The objective of this study was to evaluate the effectiveness of peel and seed extracts from two avocado varieties-'Hass' and 'Fuerte'-as inhibitors of lipid and protein oxidation and color deterioration of raw porcine patties during chilled storage (4 °C/15 days). Avocado extracts significantly (p<0.05) reduced the loss of redness and the increase of lightness during storage of porcine patties. 'Fuerte' extracts were more efficient at inhibiting discoloration of chilled patties than 'Hass' extracts. Patties treated with avocado extracts had significantly lower amounts of TBA-RS than control ones throughout the storage. 'Hass' avocado extracts significantly inhibited the formation of protein carbonyls in chilled patties at day 15. The present results highlight the potential usage of extracts from avocado by-products as ingredients for the production of muscle foods with enhanced quality traits.
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Affiliation(s)
- J G Rodríguez-Carpena
- Food Science, Faculty of Veterinary, Autonomous University of Nayarit, 63190, Tepic, Nayarit, Mexico
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21
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Armenteros M, Heinonen M, Ollilainen V, Toldrá F, Estévez M. Analysis of protein carbonyls in meat products by using the DNPH-method, fluorescence spectroscopy and liquid chromatography–electrospray ionisation–mass spectrometry (LC–ESI–MS). Meat Sci 2009; 83:104-12. [DOI: 10.1016/j.meatsci.2009.04.007] [Citation(s) in RCA: 140] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2008] [Revised: 03/20/2009] [Accepted: 04/06/2009] [Indexed: 10/20/2022]
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22
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Martínez E, Lagunas A, Mills CA, Rodríguez-Seguí S, Estévez M, Oberhansl S, Comelles J, Samitier J. Stem cell differentiation by functionalized micro- and nanostructured surfaces. Nanomedicine (Lond) 2009; 4:65-82. [PMID: 19093897 DOI: 10.2217/17435889.4.1.65] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
New fabrication technologies and, in particular, new nanotechnologies have provided biomaterial and biomedical scientists with enormous possibilities when designing customized supports and scaffolds with controlled nanoscale topography and chemistry. The main issue now is how to effectively design these components and choose the appropriate combination of structure and chemistry to tailor towards applications as challenging and complex as stem cell differentiation. Occasionally, an incomplete knowledge of the fundamentals of biological differentiation processes has hampered this issue. However, the recent technological advances in creating controlled cellular microenvironments can be seen as a powerful tool for furthering fundamental biology studies. This article reviews the main strategies followed to achieve solutions to this challenge, particularly emphasizing the working hypothesis followed by the authors to elucidate the mechanisms behind the observed effects of structured surfaces on cell behavior.
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Affiliation(s)
- E Martínez
- Nanobioengineering group, Institute for Bioengineering of Catalonia (IBEC), Barcelona, Spain.
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23
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Estévez M, Miner I, Benito MAR, Calvo C, Corcuera P, Nogués A, Eizaguirre I. [Currarino syndrome]. Cir Pediatr 2008; 21:49-51. [PMID: 18444392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The Currarino syndrome is a form of caudal regression syndrome characterized by the classic triad of presacral mass, sacral bone defect and anorectal malformation in which an autosomal dominant inheritance has been described. In case of clinical suspicion it is necessary to search for the classic alterations and to detect other possible associated malformations in order to avoid complications. The management is multidisciplinary and depends on the type of alterations that the patient has. We report a 17-month-old female baby that initially passed unnoticed and was detected during a rectoplasty for reconstruction of a rectal stenosis. The baby presented complications derived from ignorance of the existence of a presacral mass. Early diagnose and adequate treatment is very important.
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Affiliation(s)
- M Estévez
- Servicio de Pediatría, Hospital Donostia, San Sebastián.
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24
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Ventanas S, Martín D, Estévez M, Ruiz J. Analysis of volatile nitrosamines from a model system using SPME–DED at different temperatures and times of extraction. Food Chem 2006. [DOI: 10.1016/j.foodchem.2005.08.035] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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25
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Abstract
Quantitative aspects of cytology and histology should be considered in diagnostic standardisation processes. The present paper summarises the cytological differences detected in 75 thyroid lesions using a computerized textural analysis. Cells stained with progressive hematoxylin and taken from paraffin blocks were overlaid with the extracted texture. This technique was based on the lineal detection of a grey level gradient of the common logarithm of the integrated optical density (IOD) of each nucleus. Diffuse and nodular goiters (36 cases) were demonstrated to be composed of small cells containing high density texture that, on microscopical visual inspection, gave a "salt and pepper" appearance. The adenomatous goiters (2 cases) and adenomas (26 cases) were composed of low texture cells with a visual "blurry or smudgy" chromatin, while the atypical adenomas with capsular invasion (4 cases) were characterised by a "woodworm" nuclear appearance that produced the highest texture of the series. Finally, encapsulated folliculo-papillary carcinomas (3 cases) were composed of large clear nuclei with high IOD, low texture, and scattered lines that resulted in an "empty grape skin" aspect. Our findings seam to confirm the suitability of computerized textural techniques that aid in recognizing cell microscopic features objectively. The one used in the present work, based on a mathematical function of the DNA content of each individual nucleus (IOD), fulfills all microscopy detection criteria.
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Affiliation(s)
- O Ferrer-Roca
- Cátedra Anatomía Patológica, Facultad de Medicina, Universidad de la Laguna, Tenerife, Canary Islands, Spain.
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26
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Ferrer-Roca O, Pérez-Gómez JA, Cigudosa JC, Gómez E, Estévez M. Genetic heterogeneity of benign thyroid lesions. Static and flow cytometry, karyotyping and in situ hybridization analysis. Anal Cell Pathol 1998; 16:101-10. [PMID: 9692684 PMCID: PMC4612394 DOI: 10.1155/1998/275452] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The present series includes 75 thyroid lesions (38 goiters, 30 adenomas, 3 follicullo-papillary encapsulated carcinomas and 4 normal thyroid) that were studied by static and flow cytometry. Four cases were also analyzed by in situ hybridization (centromeric probes for chromosomes 1 and 17) and 10 cases by G-banding cytogenetics. Results demonstrate a polymorphism and genetic instability in the thyroid tissue that may be related to the spontaneous polyploidization of their cells. The most consistent finding in cytometry was the presence of two clones associated with clinical or histological hyperactivity (46% versus 23% in non-functioning cases; chi2 distribution with a p < 0.05). Chromosomal anomalies were detected in two out of 10 cases: 46, XX, t(5,19) in 87% of cells of a diffuse hyperplastic goiter and 49, XX, +7, +17, +22 in 19% of cells of thyroiditis case. Finally, the in situ hybridization technique showed hidden trisomies of clonal origin in all of the cases studied. Evaluation of clonal trisomies by the in situ hybridization technique using the confidence interval of a binomial distribution is discussed.
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MESH Headings
- Adenoma/genetics
- Adenoma/pathology
- Carcinoma, Papillary, Follicular/genetics
- Carcinoma, Papillary, Follicular/pathology
- Chromosomes, Human, Pair 1
- Chromosomes, Human, Pair 17
- DNA, Neoplasm/analysis
- Flow Cytometry
- Genetic Heterogeneity
- Goiter/genetics
- Goiter/pathology
- Humans
- Hyperplasia
- In Situ Hybridization
- Karyotyping
- Thyroid Neoplasms/genetics
- Thyroid Neoplasms/pathology
- Translocation, Genetic
- Trisomy
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Affiliation(s)
- O Ferrer-Roca
- Department of Pathology, Faculty of Medicine, University of La Laguna, Tenerife, Canary Islands, Spain.
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27
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Quintela JM, Peinador C, Botana L, Estévez M, Riguera R. Synthesis and antihistaminic activity of 2-guanadino-3-cyanopyridines and pyrido[2,3-d]-pyrimidines. Bioorg Med Chem 1997; 5:1543-53. [PMID: 9313860 DOI: 10.1016/s0968-0896(97)00108-9] [Citation(s) in RCA: 99] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
2-Guanadino-3-cyanopyridines 8-33 and pyrido[2,3-d]-pyrimidines 35-52 were synthesized by nucleophilic displacement and cyclization of the chloroamidines 6a-d easily obtained by reaction of 2-aminocyanopyridines 5a-d with phosgene iminium chloride and their action on the release of histamine by mast cells examined under immunological and chemical stimulus, with and without pre-incubation. Several 2-guanadino-3-cyanopyridines and pyrido[2,3-d]-pyrimidines are shown to be inhibitors of the release of histamine when stimulated with ovoalbumin as antigen or with polymer 48/80 as chemical stimulus. Guanadino-3-cyanopyridine 30 and pyrido[2,3-d]-pyrimidine 49 are the more active of all, inhibiting the release of histamine in all the conditions tested (30-60% inhibition). Guanadinocyanopyridines 15, 17, and 19 are very potent stimulators of the release of histamine (150-300%) while pyrido[2,3-d]-pyrimidines are mostly inactive. Compounds 28 and 14 present moderate in vitro cytotoxic activity against P-388, A-549, HT-29, and MEL-28 cell lines.
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Affiliation(s)
- J M Quintela
- Departamento de Química Fundamental e Industrial, Facultad de Ciencias, Universidad de La Coruña, Spain
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28
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Alfonso A, Estévez M, Louzao MC, Vieytes MR, Botana LM. Determination of phosphodiesterase activity in rat mast cells using the fluorescent cAMP analogue anthraniloyl cAMP. Cell Signal 1995; 7:513-8. [PMID: 8562312 DOI: 10.1016/0898-6568(95)00021-g] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Cyclic AMP and the isozyme families that control its concentration have an important role in rat mast cells. We have attempted to determine the total phosphodiesterase activity in rat mast cells by means of specific and non-specific inhibitors of phosphodiesterases. We used a fluorescent analogue of cAMP, 2'-O-anthraniloyl cAMP, the fluorescence intensity of which decreases when hydrolysed by phosphadiesterase (PDE), providing a measurement of total activity of PDE. The PDE inhibitors produced a decrease in the fluorescence fall. Therefore, we can establish that at least Type I, III, IV and probably Type V PDE are present in rat mast cells. We have also studied the effect of these PDE inhibitors on histamine release elicited by compound 48/80 and sodium fluoride. Chlorpromazine, a Type I PDE inhibitor, only slightly inhibits the fluoride-evoked response, while, on the other hand, milrinone, a Type III PDE inhibitor, does not modify the response to compound 48/80.
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Affiliation(s)
- A Alfonso
- Departamento de Farmacología, Facultad de Veterinaria, Lugo, Spain
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29
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González-Alvaro I, Estévez M, Carmona-Ortels L, Alvaro-Gracia JM, López-Bote JP, Humbria A. Osteoarticular brucellosis resembling microcrystalline arthropathy. J Rheumatol 1994; 21:1783-5. [PMID: 7799378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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