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Fuentealba C, Álvarez F, Ponce E, Veas S, Salazar M, Romero D, Ayala-Raso A, Alvaro JE, Valdenegro M, Figueroa CR, Fuentes L. Differences in primary metabolism related to quality of raspberry ( Rubus idaeus L.) fruit under open field and protected soilless culture growing conditions. Front Plant Sci 2024; 14:1324066. [PMID: 38273957 PMCID: PMC10808700 DOI: 10.3389/fpls.2023.1324066] [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] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 12/07/2023] [Indexed: 01/27/2024]
Abstract
Introduction The raspberry (Rubus idaeus) fruit is characterized by good taste and high acceptability by consumers. Thus, the impact on the quality attributes and metabolites related to raspberry taste should be evaluated in crop alternatives such as the protected soilless culture. This study aimed to evaluate the metabolic changes during fruit development and postharvest of raspberry grown in open field and protected soilless culture and their relationship with quality parameters and sensory perception. Methods In this study, the quality parameters and polar metabolites -sugar and amino acids- content were evaluated during raspberry ripening. In addition, ripe fruit was stored at 1 °C for five days, followed by one day of shelf life at 20 °C. Results The physiological and quality parameters showed typical changes during ripening in both growing conditions: a constant production of CO2, a drastic loss of firmness, an increase in weight and soluble solids content, loss of acidity, and a turning to red color from the green to fully ripe fruit stages in both growing conditions. Fruit from the protected soilless culture had significantly higher weight but a lower soluble solids content. The metabolic analysis showed differences in primary metabolites content during ripening and storage at 1 °C between both growing conditions. The raspberries grown in the open field showed higher contents of sugars such as D-glucose and D-fructose. On the contrary, the fruit from the protected soilless culture showed higher contents of some amino acids such as L-alanine, L-serine and L-valine, among others. The sensorial panel showed significant differences in the perception of the sweetness, acidity, color and firmness of ripe fruit from both growing conditions. Discussion The present study provides interesting and useful results with direct commercial application for this alternative growing system, mainly in areas where soil and water scarcity are a reality.
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Affiliation(s)
- Claudia Fuentealba
- Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Quillota, Chile
| | - Fernanda Álvarez
- Centro Regional de Estudios en Alimentos Saludables (CREAS), Valparaíso, Chile
| | - Excequel Ponce
- Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Quillota, Chile
| | - Sebastian Veas
- Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Quillota, Chile
| | - Martina Salazar
- Centro Regional de Estudios en Alimentos Saludables (CREAS), Valparaíso, Chile
| | - Diego Romero
- Centro Regional de Estudios en Alimentos Saludables (CREAS), Valparaíso, Chile
| | - Anibal Ayala-Raso
- Instituto de Estadística, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile
| | - Juan E. Alvaro
- Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Quillota, Chile
| | - Monika Valdenegro
- Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Quillota, Chile
| | - Carlos R. Figueroa
- Laboratory of Plant Molecular Physiology, Institute of Biological Sciences, Universidad de Talca, Talca, Chile
| | - Lida Fuentes
- Centro Regional de Estudios en Alimentos Saludables (CREAS), Valparaíso, Chile
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Funes CF, Larach A, Besoain X, Serrano DD, Hadad C, Pedreschi R, Van Nhien AN, Fuentealba C. Active coatings based on oxidized chitin nanocrystals and silk fibroins for the control of anthracnose in 'Hass' avocados. Int J Biol Macromol 2023; 253:126673. [PMID: 37660850 DOI: 10.1016/j.ijbiomac.2023.126673] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 08/29/2023] [Accepted: 08/31/2023] [Indexed: 09/05/2023]
Abstract
Postharvest avocado losses are mainly due to anthracnose disease caused by Colletotrichum gloeosporioides. Chemical fungicides are effective, but their negative effects on health and the environment have led to the search for sustainable alternatives such as biopolymer-based coatings and natural compounds. Therefore, chitin nanocrystals (NCChit) were extracted using a sustainable deep eutectic solvent (DES) and chemically modified into oxidized chitin nanocrystals (O-NCChit) or deacetylated chitin nanocrystals (D-NCChit) to modulate and increase the charge surface density and the dispersibility of the crystals. The modified NCChits were dispersed with silk fibroins (SF), essential oil (EO), melatonin (MT) and/or phenylalanine (Phe) to elaborate active coatings. Antioxidant and antifungal in vitro analyses showed that the O-NCChit/SF-based coating had the best performance. In addition, in vivo tests were carried out through the artificial inoculation of C. gloeosporioides on coated avocados. O-NCChit/SF/MT-based coatings reduced the severity of anthracnose by 45 %, the same effect as the chemical fungicide (Prochloraz®). Moreover, avocado quality parameters during cold storage and the shelf-life period were also evaluated, where nonsignificant differences were observed. Therefore, this study demonstrates the great potential of O-NCChit and SF in combination with active compounds for the control of anthracnose in 'Hass' avocados.
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Affiliation(s)
- Catalina Ferreira Funes
- Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Calle San Francisco s/n, La Palma, Quillota, Chile; Laboratoire de Glycochimie, des Antimicrobiens et des Agroressources, UR 7378, Université de Picardie Jules Verne, 33 rue Saint Leu, UFR des Sciences, 80039 Amiens cedex, France; Institut de Chimie de Picardie FR 3085, 80039 Amiens, France
| | - Alejandra Larach
- Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Calle San Francisco s/n, La Palma, Quillota, Chile
| | - Ximena Besoain
- Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Calle San Francisco s/n, La Palma, Quillota, Chile
| | - Daniela Duarte Serrano
- Laboratoire de Glycochimie, des Antimicrobiens et des Agroressources, UR 7378, Université de Picardie Jules Verne, 33 rue Saint Leu, UFR des Sciences, 80039 Amiens cedex, France; Institut de Chimie de Picardie FR 3085, 80039 Amiens, France
| | - Caroline Hadad
- Laboratoire de Glycochimie, des Antimicrobiens et des Agroressources, UR 7378, Université de Picardie Jules Verne, 33 rue Saint Leu, UFR des Sciences, 80039 Amiens cedex, France; Institut de Chimie de Picardie FR 3085, 80039 Amiens, France
| | - Romina Pedreschi
- Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Calle San Francisco s/n, La Palma, Quillota, Chile
| | - Albert Nguyen Van Nhien
- Laboratoire de Glycochimie, des Antimicrobiens et des Agroressources, UR 7378, Université de Picardie Jules Verne, 33 rue Saint Leu, UFR des Sciences, 80039 Amiens cedex, France; Institut de Chimie de Picardie FR 3085, 80039 Amiens, France.
| | - Claudia Fuentealba
- Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Calle San Francisco s/n, La Palma, Quillota, Chile.
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González A, Ranilla LG, Fuentealba C. Editorial: Advances in plant diversity and its impact on high-nutrition and functional food. Front Plant Sci 2023; 14:1272727. [PMID: 37711310 PMCID: PMC10497954 DOI: 10.3389/fpls.2023.1272727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 08/16/2023] [Indexed: 09/16/2023]
Affiliation(s)
- Adrián González
- Biomedical Research and Innovation Center (CiiB), Universidad de los Andes, Las Condes, Chile
- Biopolymer Research and Engineering Lab (BiopREL), School of Nutrition and Dietetics, Faculty of Medicine, Universidad de los Andes, Las Condes, Chile
| | - Lena Gálvez Ranilla
- Laboratory of Research in Food Science, Universidad Catolica de Santa Maria, Arequipa, Peru
- Escuela Profesional de Ingeniería de Industria Alimentaria, Facultad de Ciencias e Ingenierías Biológicas y Químicas, Universidad Catolica de Santa Maria, Arequipa, Peru
| | - Claudia Fuentealba
- Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Quillota, Chile
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Yin MH, Vargas AI, Fuentealba C, Shahid MA, Bassil E, Schaffer B. Differences in physiological and biochemical responses to short-term flooding among the three avocado (Persea americana Mill.) races. Plant Physiol Biochem 2023; 196:925-939. [PMID: 36889232 DOI: 10.1016/j.plaphy.2023.02.032] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 02/16/2023] [Accepted: 02/19/2023] [Indexed: 06/18/2023]
Abstract
Avocado (P. americana Mill.) trees are classified into three botanical races, Mexican (M), Guatemalan (G), and West Indian (WI), each distinguished by their geographical centers of origin. While avocados are considered highly sensitive to flooding stress, comparative responses of the different races to short-term flooding are not known. This study assessed the differences in physiological and biochemical responses among clonal, non-grafted avocado cultivars of each race to short-term (2-3 days) flooding. In two separate experiments, each with different cultivars of each race, container-grown trees were divided into two treatments: 1) flooded and 2) non-flooded. Net CO2 assimilation (A), stomatal conductance (gs), and transpiration (Tr) were measured periodically over time beginning the day before treatments were imposed, through the flooding period, and during a recovery period (after unflooding). At the end of the experiments, concentrations of sugars in leaves, stems, and roots, and reactive oxygen species (ROS), antioxidants, and osmolytes in leaves and roots were determined. Guatemalan trees were more sensitive to short-term flooding than M or WI trees based on decreased A, gs, and Tr and survival of flooded trees. Guatemalan trees generally had less partitioning of sugars, particularly mannoheptulose, to the roots of flooded compared to non-flooded trees. Principal component analysis showed distinct clustering of flooded trees by race based on ROS and antioxidant profiles. Thus, differential partitioning of sugars and ROS and antioxidant responses to flooding among races may explain the greater flooding sensitivity of G trees compared to M and WI trees.
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Affiliation(s)
- Melinda H Yin
- Tropical Research and Education Center, University of Florida, 18905 S.W. 280 Street, Homestead, FL, 33031, USA
| | - Ana I Vargas
- Tropical Research and Education Center, University of Florida, 18905 S.W. 280 Street, Homestead, FL, 33031, USA
| | - Claudia Fuentealba
- Escuela de Alimentos, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Waddington 716, Playa Ancha, Valparaíso, Chile
| | - Muhammad A Shahid
- North Florida Research and Education Center, University of Florida, 155 Research Center Road, Quincy, FL, 32351, USA
| | - Elias Bassil
- Tropical Research and Education Center, University of Florida, 18905 S.W. 280 Street, Homestead, FL, 33031, USA
| | - Bruce Schaffer
- Tropical Research and Education Center, University of Florida, 18905 S.W. 280 Street, Homestead, FL, 33031, USA.
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Ferreira Funes C, Bouvier B, Cézard C, Fuentealba C, Jamali A, Courty M, Hadad C, Nguyen Van Nhien A. Theoretical and Experimental studies of chitin nanocrystals treated with ionic liquid or deep eutectic solvent to afford nanochitosan sheets. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121350] [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: 02/01/2023]
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Fuentes-Cardenas IS, Cuba-Puma R, Marcilla-Truyenque S, Begazo-Gutiérrez H, Zolla G, Fuentealba C, Shetty K, Ranilla LG. Diversity of the Peruvian Andean maize ( Zea mays L.) race Cabanita: Polyphenols, carotenoids, in vitro antioxidant capacity, and physical characteristics. Front Nutr 2022; 9:983208. [PMID: 36225880 PMCID: PMC9549777 DOI: 10.3389/fnut.2022.983208] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 06/30/2022] [Accepted: 08/29/2022] [Indexed: 12/03/2022] Open
Abstract
The high diversity of the Peruvian Andean maize (Zea mays L.) represents a biological and genetic heritage relevant for food security, but few studies are targeted toward its characterization and consequent valorization and preservation. The objective of this study was to evaluate the potential of the Peruvian Andean maize race Cabanita with respect to its bioactive profiles (free and bound phenolic and carotenoid composition), physical characteristics, and in vitro antioxidant properties. Maize landraces with variable kernel pigmentation were collected from two provinces (Caylloma and Castilla) within the Arequipa region (among ten Andean sites) and the phytochemical profile was evaluated by Ultra High-Performance Liquid Chromatography with diode array detector (UHPLC-DAD). All maize samples were important sources of phenolic compounds mainly soluble p-coumaric and ferulic acid derivatives whereas anthocyanins were only detected in maize with partially red pigmented kernels. Major phenolic compounds in the bound phenolic fractions were ferulic acid and its derivatives along with p-coumaric acid. Carotenoid compounds including xanthophylls such as lutein, lutein isomers, and zeaxanthin were only detected in orange and white-yellow pigmented maize and are reported for the first time in Peruvian landraces. The multivariate analysis using Principal Components Analysis (PCA) revealed low variability of all data which may indicate a level of similarity among maize samples based on evaluated variables. However, maize grown in Caylloma province showed more homogeneous physical characteristics and higher yield, whereas higher phenolic contents and antioxidant capacity were observed in maize from Castilla. Samples CAY (yellow-pigmented kernel, Castilla) and COM (orange-pigmented kernel, Caylloma) had the highest total phenolic (246.7 mg/100 g dried weight basis, DW) and carotenoid (1.95 μg/g DW) contents among all samples. The variable Andean environmental conditions along with differences in farming practices may play a role and should be confirmed with further studies. Current results provide the metabolomic basis for future research using integrated omics platforms targeted toward the complete characterization of the ethnic-relevant maize race Cabanita.
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Affiliation(s)
| | - Rody Cuba-Puma
- Laboratory of Research in Food Science, Universidad Catolica de Santa Maria, Arequipa, Perú
| | | | - Huber Begazo-Gutiérrez
- Estación Experimental Agraria Arequipa, Instituto Nacional de Innovación Agraria (INIA), Arequipa, Perú
| | - Gastón Zolla
- Laboratorio de Fisiologia Molecular de Plantas, PIPS de Cereales y Granos Nativos, Facultad de Agronomia, Universidad Nacional Agraria La Molina, Lima, Perú
| | - Claudia Fuentealba
- Escuela de Alimentos, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Kalidas Shetty
- Department of Plant Sciences, North Dakota State University, Fargo, ND, United States
| | - Lena Gálvez Ranilla
- Laboratory of Research in Food Science, Universidad Catolica de Santa Maria, Arequipa, Perú
- Escuela Profesional de Ingeniería de Industria Alimentaria, Facultad de Ciencias e Ingenierías Biológicas y Químicas, Universidad Catolica de Santa Maria, Arequipa, Perú
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Pedreschi R, Ponce E, Hernández I, Fuentealba C, Urbina A, González-Fernández JJ, Hormaza JI, Campos D, Chirinos R, Aguayo E. Short vs. Long-Distance Avocado Supply Chains: Life Cycle Assessment Impact Associated to Transport and Effect of Fruit Origin and Supply Conditions Chain on Primary and Secondary Metabolites. Foods 2022; 11:foods11121807. [PMID: 35742005 PMCID: PMC9222684 DOI: 10.3390/foods11121807] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 06/09/2022] [Indexed: 02/01/2023] Open
Abstract
Avocado consumption and trade are increasing worldwide, with North America and Europe being the main importing regions. Spain is the major European avocado producer (90% of the production), yet it only supplies 10% of the market. Consequently, more than 90% of the avocados consumed in Europe are imported from overseas, mainly from Chile and Peru. In this work, the Life Cycle Assessment (LCA) impact associated with the transport of two avocado supply chains (short (Spanish) and long (Chilean)) and the effect of the fruit origin and distance of both chains on primary and secondary metabolites from harvest to edible ripeness were evaluated using a gas chromatography-mass spectrometry (GC-MS) and liquid chromatography coupled to diode array detection (LC-DAD) based metabolite analysis. The LCA transport impact of the fresh supply chain from production centers in Chile (Quillota) and Spain (Malaga), and then the distribution to several cities in Europe, suggested road export from Spain to European capitals to have the lowest impact (0.14 to 0.22 kg CO2 eq/kg of avocado). When export from Chile was considered, the option of oceanic freight to European ports closer to final destinations was clearly a better option (0.21 to 0.26 kg CO2 eq/kg) than via the Algeciras port in Spain followed by road transport to final destinations in European capitals (0.34 to 0.43 kg CO2 eq/kg), although the situation could be somewhat different if the avocados are transported from the destination ports in northern Europe to long-distance capitals in other European countries. Fruit origin had a significant impact on avocado primary and secondary metabolites. The conditions of the supply chain itself (10 d in cold storage in regular conditions vs. 30 d cold storage + controlled atmosphere conditions) largely influence the fate of some metabolites that certainly affect the pool of metabolites at edible ripeness. The long-assumed hypothesis that the longer the supply chain the more negative impact on nutritional and functional compounds might not hold in this case, as long as transport conditions are adequate in terms of temperature, atmosphere conditions, and time considering distance from origin to destination.
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Affiliation(s)
- Romina Pedreschi
- Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Calle San Francisco s/n, La Palma, Quillota 2260000, Chile; (E.P.); (I.H.); (C.F.)
- Correspondence: (R.P.); (E.A.)
| | - Excequel Ponce
- Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Calle San Francisco s/n, La Palma, Quillota 2260000, Chile; (E.P.); (I.H.); (C.F.)
| | - Ignacia Hernández
- Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Calle San Francisco s/n, La Palma, Quillota 2260000, Chile; (E.P.); (I.H.); (C.F.)
| | - Claudia Fuentealba
- Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Calle San Francisco s/n, La Palma, Quillota 2260000, Chile; (E.P.); (I.H.); (C.F.)
| | - Antonio Urbina
- Department of Electronics, Computer Technology and Projects, Universidad Politécnica de Cartagena (UPCT), Plaza del Hospital 1, 30202 Cartagena, Murcia, Spain;
| | - Jose J. González-Fernández
- Institute for Mediterranean and Subtropical Horticulture La Mayora (IHSM La Mayora-UMA-CSIC), 29750 Algarrobo-Costa, Málaga, Spain; (J.J.G.-F.); (J.I.H.)
| | - Jose I. Hormaza
- Institute for Mediterranean and Subtropical Horticulture La Mayora (IHSM La Mayora-UMA-CSIC), 29750 Algarrobo-Costa, Málaga, Spain; (J.J.G.-F.); (J.I.H.)
| | - David Campos
- Instituto de Biotecnología, Universidad Nacional Agraria La Molina (IBT-UNALM), Av. La Molina s/n, Lima 12056, Peru; (D.C.); (R.C.)
| | - Rosana Chirinos
- Instituto de Biotecnología, Universidad Nacional Agraria La Molina (IBT-UNALM), Av. La Molina s/n, Lima 12056, Peru; (D.C.); (R.C.)
| | - Encarna Aguayo
- Postharvest and Refrigeration Group and Quality and Health Group, Escuela Técnica Superior de Ingeniería Agronómica (ETSIA) and Institute of Plant Biotechnology, Universidad Politécnica de Cartagena (UPCT), Paseo Alfonso XIII, 48, 30203 Cartagena, Murcia, Spain
- Correspondence: (R.P.); (E.A.)
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Jaramillo AF, Martinez JC, Flores P, Medina C, Rojas D, Díaz-Gómez A, Fuentealba C, Meléndrez MF. Condensed tannin resins extracted from Pinus radiata bark as a support matrix in carbon nanofiber-reinforced polymers. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-020-03530-8] [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: 11/24/2022]
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Ranilla LG, Rios-Gonzales BA, Ramírez-Pinto MF, Fuentealba C, Pedreschi R, Shetty K. Primary and Phenolic Metabolites Analyses, In Vitro Health-Relevant Bioactivity and Physical Characteristics of Purple Corn ( Zea mays L.) Grown at Two Andean Geographical Locations. Metabolites 2021; 11:722. [PMID: 34822380 PMCID: PMC8625611 DOI: 10.3390/metabo11110722] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 08/14/2021] [Revised: 10/06/2021] [Accepted: 10/08/2021] [Indexed: 11/16/2022] Open
Abstract
Purple corn (Zea mays L.) is native to the Andean region, but limited research has been performed about the potential metabolic variability when grown under Andean environmental conditions. This study was aimed at evaluating the phenolic and primary polar metabolites composition of purple corn (kernels and cobs) grown at two Peruvian Andean locations (lowland and highland) using targeted UHPLC (ultra-high-performance liquid chromatography) and untargeted GC-MS (gas chromatography mass spectrometry) metabolomic platforms, respectively. Changes in the physical characteristics and the in vitro bioactivity were also determined. Purple corn from the highland zone showed higher contents of ash, crude fiber, total phenolic contents, DPPH (2,2-diphenyl-1-picrylhydrazyl) antioxidant capacity, and α-amylase inhibitory activity in kernels, whereas increased levels of flavonoids (anthocyanins and quercetin derivatives) and ABTS [2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)] antioxidant capacity were observed in cobs in comparison to lowland samples. No effect of the Andean location was found on the α-glucosidase inhibitory activity relevant for hyperglycemia management, while yield-linked physical characteristics were high in purple corn grown at the lowland zone. Polar primary metabolites related to the carbohydrate (monosaccharides, sucrose, and d-sorbitol), amino acid (valine and alanine), and tricarboxylic acid cycle (succinic, fumaric, and aconitic acid) metabolism were higher in highland purple corn (cob and kernel) likely due to abiotic stress factors from the highland environment. This study provides the foundation for further breeding improvements at Andean locations.
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Affiliation(s)
- Lena Gálvez Ranilla
- Laboratory of Research in Food Science, Universidad Catolica de Santa Maria, Urb. San Jose s/n Umacollo, Arequipa 04001, Peru; (B.A.R.-G.); (M.F.R.-P.)
| | - Briggite Anyela Rios-Gonzales
- Laboratory of Research in Food Science, Universidad Catolica de Santa Maria, Urb. San Jose s/n Umacollo, Arequipa 04001, Peru; (B.A.R.-G.); (M.F.R.-P.)
| | - María Fernanda Ramírez-Pinto
- Laboratory of Research in Food Science, Universidad Catolica de Santa Maria, Urb. San Jose s/n Umacollo, Arequipa 04001, Peru; (B.A.R.-G.); (M.F.R.-P.)
| | - Claudia Fuentealba
- Escuela de Alimentos, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Av. Waddington 716, Valparaíso 2340000, Chile;
| | - Romina Pedreschi
- Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Calle San Francisco s/n La Palma, Quillota 2260000, Chile;
| | - Kalidas Shetty
- Department of Plant Sciences, North Dakota State University, Fargo, ND 58108, USA;
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Delgado N, Olivera M, Cádiz F, Bravo G, Montenegro I, Madrid A, Fuentealba C, Pedreschi R, Salgado E, Besoain X. Volatile Organic Compounds (VOCs) Produced by Gluconobacter cerinus and Hanseniaspora osmophila Displaying Control Effect against Table Grape-Rot Pathogens. Antibiotics (Basel) 2021; 10:antibiotics10060663. [PMID: 34205962 PMCID: PMC8226828 DOI: 10.3390/antibiotics10060663] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 05/21/2021] [Accepted: 05/24/2021] [Indexed: 12/20/2022] Open
Abstract
Table grapes (Vitis vinifera) are affected by botrytis bunch rot and summer bunch rot, the latter a complex disease caused by Botrytis cinerea, Aspergillus spp., Penicillium expansum and Rhizopus stolonifer. To search for biocontrol alternatives, a new bioproduct composed of Gluconobacter cerinus and Hanseniaspora osmophila, a consortium called PUCV-VBL, was developed for the control of fungal rots in table grapes. Since this consortium presents new biocontrol species, the effect of their VOCs (volatile organic compounds) was evaluated under in vitro and in vivo conditions. The VOCs produced by the PUCV-VBL consortium showed the highest mycelial inhibition against Botrytis cinerea (86%). Furthermore, H. osmophila was able to inhibit sporulation of A. tubingensis and P. expansum. VOCs' effect in vivo was evaluated using berries from Red Globe, Thompson Seedless and Crimson Seedless grapes cultivars, demonstrating a mycelial inhibition by VOCs greater than 70% for all evaluated fungal species. The VOC identification of the PUCV-VBL consortium was analyzed by solid-phase microextraction coupled to gas chromatography-mass spectrometry (SPME-GCMS). A total 26 compounds were identified, including 1-butanol 3-methyl, propanoic acid ethyl ester, ethyl acetate, phenylethyl alcohol, isobutyl acetate and hexanoic acid ethyl ester. Our results show that VOCs are an important mode of action of the PUCV-VBL biological consortium.
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Affiliation(s)
- Ninoska Delgado
- Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, San Francisco s/n La Palma, Quillota 2260000, Chile; (M.O.); (F.C.); (R.P.); (E.S.)
- Correspondence: (N.D.); (X.B.); Tel.: +56-32-237-2930 (X.B.)
| | - Matías Olivera
- Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, San Francisco s/n La Palma, Quillota 2260000, Chile; (M.O.); (F.C.); (R.P.); (E.S.)
| | - Fabiola Cádiz
- Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, San Francisco s/n La Palma, Quillota 2260000, Chile; (M.O.); (F.C.); (R.P.); (E.S.)
| | - Guillermo Bravo
- Molecular Microbiology and Environmental Biotechnology Laboratory, Department of Chemistry & Center of Biotechnology Daniel Alkalay Lowitt, Universidad Técnica Federico Santa María, Avda. España 1680, Valparaíso 2390123, Chile;
| | - Iván Montenegro
- Escuela de Obstetricia y Puericultura, Facultad de Medicina, Universidad de Valparaíso, Angamos 655, Reñaca, Viña del Mar 2520000, Chile;
| | - Alejandro Madrid
- Laboratorio de Productos Naturales y Síntesis Orgánica (LPNSO), Departamento de Química, Facultad de Ciencias Naturales y Exactas, Universidad de Playa Ancha, Avda. Leopoldo Carvallo 270, Playa Ancha, Valparaíso 2340000, Chile;
| | - Claudia Fuentealba
- Escuela de Alimentos, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Waddington 716, Valparaíso 2340000, Chile;
| | - Romina Pedreschi
- Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, San Francisco s/n La Palma, Quillota 2260000, Chile; (M.O.); (F.C.); (R.P.); (E.S.)
| | - Eduardo Salgado
- Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, San Francisco s/n La Palma, Quillota 2260000, Chile; (M.O.); (F.C.); (R.P.); (E.S.)
| | - Ximena Besoain
- Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, San Francisco s/n La Palma, Quillota 2260000, Chile; (M.O.); (F.C.); (R.P.); (E.S.)
- Correspondence: (N.D.); (X.B.); Tel.: +56-32-237-2930 (X.B.)
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11
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Fuentealba C, Ejsmentewicz T, Campos-Vargas R, Saa S, Aliaga O, Chirinos R, Campos D, Pedreschi R. Cell wall and metabolite composition of sweet cherry fruits from two cultivars with contrasting susceptibility to surface pitting during storage. Food Chem 2020; 342:128307. [PMID: 33046285 DOI: 10.1016/j.foodchem.2020.128307] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 10/18/2019] [Revised: 09/01/2020] [Accepted: 10/01/2020] [Indexed: 12/29/2022]
Abstract
Surface pitting is a serious postharvest physiological disorder in sweet cherries that is observed as skin depressions developed days after bruising. This work aims to compare two cultivars displaying different pitting susceptibilities ('Kordia': relatively resistant; 'Sweetheart': relatively susceptible) using metabolomics profiling and cell wall sugar characterization at different developmental stages and during postharvest storage. Kordia was significantly firmer than Sweetheart, with 1.4-fold more alcohol-insoluble residues (AIRs). A significant correlation was observed between AIRs and deformation, indicating that the highest yields of cell wall material are positively correlated with the resistance to rupture. Additionally, free d-galacturonic acid was higher in pitted Sweetheart samples, likely indicating greater pectin degradation in this susceptible cultivar. Higher contents of the p-coumaric acid derivatives L-5-oxoproline and d-galactose in Sweetheart cherries were found. The metabolic changes during storage and cell wall composition could influence the susceptibility to surface pitting.
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Affiliation(s)
- Claudia Fuentealba
- Escuela de Alimentos, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso. Waddington 716, Playa Ancha, Valparaíso, Chile.
| | - Troy Ejsmentewicz
- Centro de Biotecnología Vegetal, Facultad de Ciencias Biológicas, Universidad Andrés Bello, Santiago, Chile
| | - Reinaldo Campos-Vargas
- Centro de Biotecnología Vegetal, Facultad de Ciencias Biológicas, Universidad Andrés Bello, Santiago, Chile.
| | - Sebastian Saa
- Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Calle San Francisco s/n, La Palma, Quillota, Chile
| | - Oscar Aliaga
- Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Calle San Francisco s/n, La Palma, Quillota, Chile
| | - Rosana Chirinos
- Instituto de Biotecnología (IBT), Universidad Nacional Agraria La Molina - UNALM, Avenida La Molina s/n, Lima, Peru.
| | - David Campos
- Instituto de Biotecnología (IBT), Universidad Nacional Agraria La Molina - UNALM, Avenida La Molina s/n, Lima, Peru.
| | - Romina Pedreschi
- Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Calle San Francisco s/n, La Palma, Quillota, Chile.
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12
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Bolfa P, Fuentealba C, Illanes O. Virtual Pathology Rounds – A Bridge Between Pathologists, Cases, Students, Teaching and Technology. J Comp Pathol 2020. [DOI: 10.1016/j.jcpa.2019.10.047] [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: 10/25/2022]
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13
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Covarrubias MP, Lillo-Carmona V, Melet L, Benedetto G, Andrade D, Maucourt M, Deborde C, Fuentealba C, Moing A, Valenzuela ML, Pedreschi R, Almeida AM. Metabolite Fruit Profile Is Altered in Response to Source-Sink Imbalance and Can Be Used as an Early Predictor of Fruit Quality in Nectarine. Front Plant Sci 2020; 11:604133. [PMID: 33488653 PMCID: PMC7820367 DOI: 10.3389/fpls.2020.604133] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Accepted: 11/26/2020] [Indexed: 05/08/2023]
Abstract
Peaches and nectarines [Prunus persica (L.) Batsch] are among the most exported fresh fruit from Chile to the Northern Hemisphere. Fruit acceptance by final consumers is defined by quality parameters such as the size, weight, taste, aroma, color, and juiciness of the fruit. In peaches and nectarines, the balance between soluble sugars present in the mesocarp and the predominant organic acids determines the taste. Biomass production and metabolite accumulation by fruits occur during the different developmental stages and depend on photosynthesis and carbon export by source leaves. Carbon supply to fruit can be potentiated through the field practice of thinning (removal of flowers and young fruit), leading to a change in the source-sink balance favoring fruit development. Thinning leads to fruit with increased size, but it is not known how this practice could influence fruit quality in terms of individual metabolite composition. In this work, we analyzed soluble metabolite profiles of nectarine fruit cv "Magique" at different developmental stages and from trees subjected to different thinning treatments. Mesocarp metabolites were analyzed throughout fruit development until harvest during two consecutive harvest seasons. Major polar compounds such as soluble sugars, amino acids, organic acids, and some secondary metabolites were measured by quantitative 1H-NMR profiling in the first season and GC-MS profiling in the second season. In addition, harvest and ripening quality parameters such as fruit weight, firmness, and acidity were determined. Our results indicated that thinning (i.e., source-sink imbalance) mainly affects fruit metabolic composition at early developmental stages. Metabolomic data revealed that sugar, organic acid, and phenylpropanoid pathway intermediates at early stages of development can be used to segregate fruits impacted by the change in source-sink balance. In conclusion, we suggest that the metabolite profile at early stages of development could be a metabolic predictor of final fruit quality in nectarines.
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Affiliation(s)
- María Paz Covarrubias
- Departamento de Biología, Facultad de Ciencias, Centro de Biología Molecular Vegetal, Universidad de Chile, Santiago, Chile
| | - Victoria Lillo-Carmona
- Centro de Biotecnología Vegetal, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile
| | - Lorena Melet
- Centro de Genómica y Bioinformática, Facultad de Ciencias, Universidad Mayor, Huechuraba, Chile
| | - Gianfranco Benedetto
- Escuela Ingeniería en Biotecnología, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile
| | - Diego Andrade
- Escuela Ingeniería en Biotecnología, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile
| | - Mickael Maucourt
- Centre INRAE de Nouvelle Aquitaine Bordeaux, MetaboHUB, INRAE 2018, Bordeaux Metabolome, UMR 1332, Biologie du Fruit et Pathologie, Universit de Bordeaux, INRAE, Bordeaux, France
| | - Catherine Deborde
- Centre INRAE de Nouvelle Aquitaine Bordeaux, MetaboHUB, INRAE 2018, Bordeaux Metabolome, UMR 1332, Biologie du Fruit et Pathologie, Universit de Bordeaux, INRAE, Bordeaux, France
| | - Claudia Fuentealba
- Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Quillota, Chile
| | - Annick Moing
- Centre INRAE de Nouvelle Aquitaine Bordeaux, MetaboHUB, INRAE 2018, Bordeaux Metabolome, UMR 1332, Biologie du Fruit et Pathologie, Universit de Bordeaux, INRAE, Bordeaux, France
| | - María Luisa Valenzuela
- Inorganic Chemistry and Molecular Material Center, Instituto de Ciencias Químicas Aplicadas, Universidad Autónoma de Chile, Santiago, Chile
| | - Romina Pedreschi
- Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Quillota, Chile
| | - Andréa Miyasaka Almeida
- Centro de Genómica y Bioinformática, Facultad de Ciencias, Universidad Mayor, Huechuraba, Chile
- Escuela de Agronom a, Facultad de Ciencias, Universidad Mayor, Huechuraba, Chile
- *Correspondence: Andréa Miyasaka Almeida, ;
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14
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Vera N, Gutiérrez C, Allende R, Williams P, Fuentealba C, Ávila-Stagno J. Dose–response effect of a pine bark extract on in vitro ruminal ammonia and methane formation kinetics. ACTA AGR SCAND A-AN 2019. [DOI: 10.1080/09064702.2019.1694575] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- N. Vera
- Department of Animal Science, Faculty of Veterinary Sciences, Universidad de Concepción, Chillán, Chile
| | - C. Gutiérrez
- Department of Animal Science, Faculty of Veterinary Sciences, Universidad de Concepción, Chillán, Chile
| | - R. Allende
- Department of Animal Science, Faculty of Veterinary Sciences, Universidad de Concepción, Chillán, Chile
| | - P. Williams
- Department of Animal Production, Faculty of Agronomy, Universidad de Concepción, Chillán, Chile
| | - C. Fuentealba
- Technological Development Unit, Universidad de Concepción, Coronel, Chile
| | - J. Ávila-Stagno
- Department of Animal Science, Faculty of Veterinary Sciences, Universidad de Concepción, Chillán, Chile
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15
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Pedreschi R, Uarrota V, Fuentealba C, Alvaro JE, Olmedo P, Defilippi BG, Meneses C, Campos-Vargas R. Primary Metabolism in Avocado Fruit. Front Plant Sci 2019; 10:795. [PMID: 31293606 PMCID: PMC6606701 DOI: 10.3389/fpls.2019.00795] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 05/31/2019] [Indexed: 05/25/2023]
Abstract
Avocado (Persea americana Mill) is rich in a variety of essential nutrients and phytochemicals; thus, consumption has drastically increased in the last 10 years. Avocado unlike other fruit is characterized by oil accumulation during growth and development and presents a unique carbohydrate pattern. There are few previous and current studies related to primary metabolism. The fruit is also quite unique since it contains large amounts of C7 sugars (mannoheptulose and perseitol) acting as transportable and storage sugars and as potential regulators of fruit ripening. These C7 sugars play a central role during fruit growth and development, but still confirmation is needed regarding the biosynthetic routes and the physiological function during growth and development of avocado fruit. Relatively recent transcriptome studies on avocado mesocarp during development and ripening have revealed that most of the oil is synthesized during early stages of development and that oil synthesis is halted when the fruit is harvested (pre-climacteric stage). Most of the oil is accumulated in the form of triacylglycerol (TAG) representing 60-70% in dry basis of the mesocarp tissue. During early stages of fruit development, high expression of transcripts related to fatty acid and TAG biosynthesis has been reported and downregulation of same genes in more advanced stages but without cessation of the process until harvest. The increased expression of fatty acid key genes and regulators such as PaWRI1, PaACP4-2, and PapPK-β-1 has also been reported to be consistent with the total fatty acid increase and fatty acid composition during avocado fruit development. During postharvest, there is minimal change in the fatty acid composition of the fruit. Almost inexistent information regarding the role of organic acid and amino acid metabolism during growth, development, and ripening of avocado is available. Cell wall metabolism understanding in avocado, even though crucial in terms of fruit quality, still presents severe gaps regarding the interactions between cell wall remodeling, fruit development, and postharvest modifications.
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Affiliation(s)
- Romina Pedreschi
- Laboratorio de Fisiología Postcosecha y Bioquímica de Alimentos, Facultad de Ciencias Agronómicas y de los Alimentos, Escuela de Agronomía, Pontificia Universidad Católica de Valparaíso, Valparaiso, Chile
| | - Virgilio Uarrota
- Laboratorio de Fisiología Postcosecha y Bioquímica de Alimentos, Facultad de Ciencias Agronómicas y de los Alimentos, Escuela de Agronomía, Pontificia Universidad Católica de Valparaíso, Valparaiso, Chile
| | - Claudia Fuentealba
- Laboratorio de Fisiología Postcosecha y Bioquímica de Alimentos, Facultad de Ciencias Agronómicas y de los Alimentos, Escuela de Agronomía, Pontificia Universidad Católica de Valparaíso, Valparaiso, Chile
| | - Juan E. Alvaro
- Laboratorio de Fisiología Postcosecha y Bioquímica de Alimentos, Facultad de Ciencias Agronómicas y de los Alimentos, Escuela de Agronomía, Pontificia Universidad Católica de Valparaíso, Valparaiso, Chile
| | - Patricio Olmedo
- Facultad de Ciencias de la Vida, Centro de Biotecnología Vegetal, Universidad Andres Bello, Santiago, Chile
| | - Bruno G. Defilippi
- Unidad de Postcosecha, Instituto de Investigaciones Agropecuarias, INIA La Platina, Santiago, Chile
| | - Claudio Meneses
- Facultad de Ciencias de la Vida, Centro de Biotecnología Vegetal, Universidad Andres Bello, Santiago, Chile
| | - Reinaldo Campos-Vargas
- Facultad de Ciencias de la Vida, Centro de Biotecnología Vegetal, Universidad Andres Bello, Santiago, Chile
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16
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Ranilla LG, Huamán-Alvino C, Flores-Báez O, Aquino-Méndez EM, Chirinos R, Campos D, Sevilla R, Fuentealba C, Pedreschi R, Sarkar D, Shetty K. Evaluation of phenolic antioxidant-linked in vitro bioactivity of Peruvian corn ( Zea mays L.) diversity targeting for potential management of hyperglycemia and obesity. J Food Sci Technol 2019; 56:2909-2924. [PMID: 31205346 DOI: 10.1007/s13197-019-03748-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 03/15/2019] [Accepted: 03/21/2019] [Indexed: 11/28/2022]
Abstract
Peruvian corn biodiversity is one of the highest in the world and may represent an important natural source of health relevant phenolic bioactive compounds whose potential needs to be investigated. This study investigated twenty-two Peruvian corn samples corresponding to five corn races (Arequipeño, Cabanita, Kculli, Granada and Coruca) in relation to their total phenolic contents (TPC), anthocyanin contents, Ultra-Performance Liquid Chromatography (UPLC) phenolic profiles and antioxidant capacity (ABTS and ORAC methods). Subsequently using both free and cell-wall bound phenolic fractions their health relevance targeting hyperglycemia (α-glucosidase and α-amylase inhibition) and obesity (lipase inhibition) potentials was evaluated using in vitro assay models. Antioxidant capacity and TPC were high in bound fractions from yellow-colored races in contrast to the purple-colored race (Kculli) which had high TPC (mainly anthocyanins) and antioxidant capacity in the free form. The major phenolic acids detected by UPLC were ferulic and p-coumaric acids. High α-glucosidase (32.5-76.1%, 25 mg sample dose) and moderate α-amylase inhibitory activities (13.6-29.0%, 250 mg sample dose) were found in all free fractions, but only samples from the Kculli race had lipase inhibitory activity (58.45-92.16%, 12.5 mg sample dose). Principal component analysis revealed that the variability of data was affected by the race and the α-glucosidase and lipase inhibitory activities positively correlated with anthocyanins and antioxidant capacity. Some accessions of Kculli, Granada and Cabanita races are promising for future breeding strategies focused on the development of improved corn varieties targeted for the design of functional foods relevant for hyperglycemia and obesity prevention.
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Affiliation(s)
- Lena Gálvez Ranilla
- 1Laboratory of Research in Food Science, Universidad Catolica de Santa Maria, Urb. San José s/n Umacollo, Arequipa, Peru
| | - Cinthya Huamán-Alvino
- 2Instituto de Biotecnología, Universidad Nacional Agraria La Molina, Av. La Molina s/n, Lima, Peru
| | - Orlando Flores-Báez
- 2Instituto de Biotecnología, Universidad Nacional Agraria La Molina, Av. La Molina s/n, Lima, Peru
| | | | - Rosana Chirinos
- 2Instituto de Biotecnología, Universidad Nacional Agraria La Molina, Av. La Molina s/n, Lima, Peru
| | - David Campos
- 2Instituto de Biotecnología, Universidad Nacional Agraria La Molina, Av. La Molina s/n, Lima, Peru
| | - Ricardo Sevilla
- 3Maize Research Program, Universidad Nacional Agraria La Molina, Av. La Molina s/n, Lima, Peru
| | - Claudia Fuentealba
- 4School of Agronomy, Pontificia Universidad Católica de Valparaíso, Calle San Francisco s/n La Palma, Quillota, Chile
| | - Romina Pedreschi
- 4School of Agronomy, Pontificia Universidad Católica de Valparaíso, Calle San Francisco s/n La Palma, Quillota, Chile
| | - Dipayan Sarkar
- 5Department of Plant Sciences, North Dakota State University, Fargo, ND 58108 USA
| | - Kalidas Shetty
- 5Department of Plant Sciences, North Dakota State University, Fargo, ND 58108 USA
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Muñoz O, Fuentealba C, Ampuero D, Figuerola F, Estévez AM. The effect of Lactobacillus acidophilus and Lactobacillus casei on the in vitro bioaccessibility of flaxseed lignans (Linum usitatissimum L.). Food Funct 2018; 9:2426-2432. [PMID: 29629722 DOI: 10.1039/c8fo00390d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Secoisolariciresinol (SECO) is present in flaxseeds as a glucoside, secoisolariciresinol diglucoside (SDG), which can be metabolized to enterodiol (ED) and enterolactone (EL) by the human intestinal microbiota. The aim of this study was to evaluate the effect of Lactobacillus casei and Lactobacillus acidophilus on the bioaccessibility of flaxseed lignans from a complete in vitro digestion of whole flaxseeds (WFs) and flaxseed flour (FF). Lignans are only detected in the large intestine. The bioaccessibility of SDG for FF digestion can be ordered as follows: control (without probiotics) > L. casei > L. acidophilus; and for WF digestion, only in the presence of L. casei SDG was detected. For SECO and EL, the presence of both probiotics had no effect on FF and WF digestion. However, in the digestion of WF both L. casei and L. acidophilus increased ED bioaccessibility in the first 12 h; but both probiotics had no significant effect on FF digestion.
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Affiliation(s)
- O Muñoz
- Instituto de Ciencia y Tecnología de los Alimentos, Facultad de Ciencias Agrarias, Universidad Austral de Chile. Campus Isla Teja s/n. Valdivia, Chile
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18
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Zepeda B, Olmedo P, Ejsmentewicz T, Sepúlveda P, Balic I, Balladares C, Delgado-Rioseco J, Fuentealba C, Moreno AA, Defilippi BG, Meneses C, Pedreschi R, Campos-Vargas R. Cell wall and metabolite composition of berries of Vitis vinifera (L.) cv. Thompson Seedless with different firmness. Food Chem 2018; 268:492-497. [PMID: 30064789 DOI: 10.1016/j.foodchem.2018.06.065] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [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: 02/28/2018] [Revised: 06/06/2018] [Accepted: 06/13/2018] [Indexed: 01/11/2023]
Abstract
Firm berries are highly appreciated by table grape consumers. Cell wall composition is one of the main factors influencing the firmness of table grape berries. Nevertheless, the biological factors driving changes in berry firmness remain unclear. In the present work, we evaluated the firmness of berries of Vitis vinifera cv. Thompson Seedless. We selected two orchards displaying contrasting berry firmness and evaluated polar metabolites and cell wall composition. Our results suggest that berries from the soft orchard exhibited a higher accumulation of sugars at veraison whereas berries from the hard orchard accumulated the same sugars at harvest plus a higher amount of glucose monosaccharide at the cell wall. Thus, this study opens new insights about a connection between metabolic and cell wall changes with fruit firmness in a table grape variety, suggesting that it is possible to use metabolomic tools to identify metabolic biomarkers associated with table grape berry firmness.
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Affiliation(s)
- Baltasar Zepeda
- Centro de Biotecnología Vegetal, Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile
| | - Patricio Olmedo
- Centro de Biotecnología Vegetal, Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile
| | - Troy Ejsmentewicz
- Centro de Biotecnología Vegetal, Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile
| | - Pablo Sepúlveda
- Centro de Biotecnología Vegetal, Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile
| | - Iván Balic
- Departamento de Acuicultura y Recursos Agroalimentarios, Universidad de Los Lagos, Fuchslocher 1305, Osorno, Chile
| | - Cristóbal Balladares
- Centro de Biotecnología Vegetal, Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile
| | - Joaquín Delgado-Rioseco
- Centro de Biotecnología Vegetal, Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile
| | - Claudia Fuentealba
- Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Calle San Francisco s/n, La Palma, Quillota, Chile
| | - Adrián A Moreno
- Centro de Biotecnología Vegetal, Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile
| | - Bruno G Defilippi
- Instituto de Investigaciones Agropecuarias, INIA La Platina, Santiago, Chile
| | - Claudio Meneses
- Centro de Biotecnología Vegetal, Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile; FONDAP Center for Genome Regulation, Chile
| | - Romina Pedreschi
- Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Calle San Francisco s/n, La Palma, Quillota, Chile
| | - Reinaldo Campos-Vargas
- Centro de Biotecnología Vegetal, Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile.
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Murray NP, Fuentealba C, Reyes E, Jacob O. A comparison of 3 on-line nomograms with the detection of primary circulating prostate cells to predict prostate cancer at initial biopsy. Actas Urol Esp 2017; 41:234-241. [PMID: 28108045 DOI: 10.1016/j.acuro.2016.10.007] [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] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 10/20/2016] [Accepted: 10/21/2016] [Indexed: 11/28/2022]
Abstract
INTRODUCTION The use of nomograms which include the PSA may improve the predictive power of obtaining a prostate biopsy (PB) positive for cancer. We compare the use of three on-line nomagrams with the detection of primary malignant circulating prostate cells (CPCs) to predict the results of an initial PB in men with suspicion of prostate cancer. METHODS AND PATIENTS Consecutive men with suspicion of prostate cancer underwent a 12 core TRUS prostate biopsy; age, total serum PSA, percent free PSA, family history, ethnic origin and prostate ultrasound results were used for risk assessment using the online nomograms. Mononuclear cells were obtained by differential gel centrifugation from 8ml of blood and CPCs were identified using double immunomarcation with anti-PSA and anti-P504S. A CPC was defined as a cell expressing PSA and P504S and defined as negative/positive. Biopsies were classified as cancer/no-cancer. Areas under the curve (AUC) for each parameter were calculated and compared and diagnostic yields were calculated. RESULTS 1,223 men aged>55 years participated, 467 (38.2%) had a biopsy positive for cancer of whom 114/467 (24.4%) complied with the criteria for active observation. Area under the curve analysis showed CPC detection to be superior (p<0.001), avoiding 57% of potential biopsies while missing 4% of clinically significant prostate cancers. CONCLUSIONS The CPC detection was superior to the nomograms in predicting the presence of prostate cancer at initial biopsy; its high negative predictive value potentially reduces the number of biopsies while missing few significant cancers, being superior to the nomograms in this aspect. Being a positive/negative test the detection of CPCs avoids defining a cutoff value which may differ between populations.
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Affiliation(s)
- N P Murray
- Servicio de Medicina, Hospital de Carabineros de Chile, Santiago, Chile; Facultad de Medicina, Universidad Finis Terrae, Santiago, Chile.
| | - C Fuentealba
- Servicio de Urología, Hospital de Carabineros de Chile, Santiago, Chile
| | - E Reyes
- Servicio de Urología, Hospital DIPRECA, Santiago, Chile; Facultad de Medicina, Universidad Diego Portales, Santiago, Chile
| | - O Jacob
- Servicio de Urología, Hospital de Carabineros de Chile, Santiago, Chile
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Saavedra J, Córdova A, Navarro R, Díaz-Calderón P, Fuentealba C, Astudillo-Castro C, Toledo L, Enrione J, Galvez L. Industrial avocado waste: Functional compounds preservation by convective drying process. J FOOD ENG 2017. [DOI: 10.1016/j.jfoodeng.2016.11.018] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Fuentealba C, Quesille-Villalobos AM, González-Muñoz A, Saavedra Torrico J, Shetty K, Gálvez Ranilla L. Optimized methodology for the extraction of free and bound phenolic acids from Chilean Cristalinocorn ( Zea maysL.) accession. CyTA - Journal of Food 2016. [DOI: 10.1080/19476337.2016.1217048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Fuentealba C, Gálvez L, Cobos A, Olaeta JA, Defilippi BG, Chirinos R, Campos D, Pedreschi R. Characterization of main primary and secondary metabolites and in vitro antioxidant and antihyperglycemic properties in the mesocarp of three biotypes of Pouteria lucuma. Food Chem 2016. [DOI: 10.1016/j.foodchem.2015.05.111] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Fuentealba C, Pedreschi R, Hernández I, Jorge. A STATISTICAL APPROACH FOR ASSESSING THE HETEROGENEITY OF HASS AVOCADOS SUBJECTED TO DIFFERENT POSTHARVEST ABIOTIC STRESSES. ACTA ACUST UNITED AC 2016. [DOI: 10.4067/s0718-16202016000300002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Williamson JA, Hecker K, Yvorchuk K, Artemiou E, French H, Fuentealba C. Development and validation of a feline abdominal palpation model and scoring rubric. Vet Rec 2015. [DOI: 10.1136/vr.103212] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- J. A. Williamson
- Ross University School of Veterinary Medicine, P.O. Box 334, Basseterre, St. Kitts
- Lincoln Memorial University College of Veterinary Medicine; 6965 Cumberland Gap Pkwy Harrogate TN 37752 USA
| | - K. Hecker
- Faculty of Veterinary Medicine; University of Calgary; TRW 2D01, 3280 Hospital Drive NW Calgary Alberta Canada T2N 4Z6
| | - K. Yvorchuk
- Ross University School of Veterinary Medicine, P.O. Box 334, Basseterre, St. Kitts
| | - E. Artemiou
- Ross University School of Veterinary Medicine, P.O. Box 334, Basseterre, St. Kitts
| | - H. French
- Ross University School of Veterinary Medicine, P.O. Box 334, Basseterre, St. Kitts
| | - C. Fuentealba
- Ross University School of Veterinary Medicine, P.O. Box 334, Basseterre, St. Kitts
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Fuentealba C, Figuerola F, Estévez AM, González-Muñoz A, Muñoz O. Optimization of secoisolariciresinol diglucoside extraction from flaxseed (Linum usitatissimumL.) and isolation by a simple HPLC-UV method. CyTA - Journal of Food 2014. [DOI: 10.1080/19476337.2014.953209] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Fuentealba C, Figuerola F, Estévez AM, Bastías JM, Muñoz O. Bioaccessibility of lignans from flaxseed (Linum usitatissimum L.) determined by single-batch in vitro simulation of the digestive process. J Sci Food Agric 2014; 94:1729-1738. [PMID: 24243589 DOI: 10.1002/jsfa.6482] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2013] [Revised: 09/11/2013] [Accepted: 11/14/2013] [Indexed: 06/02/2023]
Abstract
BACKGROUND Flaxseed is an important source of lignan secoisolariciresinol diglucoside (SDG) and its aglycone, secoisolariciresinol (SECO). These phenolic compounds can be metabolized to the mammalian lignans enterodiol (ED) and enterolactone (EL) by human intestinal microflora. Flaxseed lignans are known for their potential health benefits, which are attributed to their antioxidant and phytoestrogenic properties. The focus of this study was to determine the bioaccessibility of plant and mammalian lignans in whole flaxseed (WF) and flaxseed flour (FF) throughout the entire digestive process. Moreover, the metabolic activity of intestinal microflora was evaluated. RESULTS A single-batch in vitro simulation of the digestive process was performed, including fermentation by the intestinal microflora in the colon. Bioaccessibility was calculated as (free lignan)/(total lignan). In digested WF, the bioaccessibility values of SECO, ED and EL were 0.75%, 1.56% and 1.23%, respectively. Conversely, in digested FF, the bioaccessibility values of SDG, ED and EL were 2.06%, 2.72% and 1.04%, respectively. The anaerobic count and short-chain fatty acids indicate that bacteria survival and carbohydrate fermentation occurred. CONCLUSION The contents of both SDG and ED were significantly higher in digested FF than in digested WF. FF facilitated the action of intestinal bacteria to release SDG and metabolize ED.
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Affiliation(s)
- Claudia Fuentealba
- Food Science and Technology Institute, Faculty of Agricultural Sciences, Universidad Austral de Chile, Valdivia, Chile
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González-Muñoz A, Quesille-Villalobos AM, Fuentealba C, Shetty K, Gálvez Ranilla L. Potential of Chilean native corn (Zea mays L.) accessions as natural sources of phenolic antioxidants and in vitro bioactivity for hyperglycemia and hypertension management. J Agric Food Chem 2013; 61:10995-1007. [PMID: 24156632 DOI: 10.1021/jf403237p] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Thirty-three Chilean corn accessions were screened for the first time regarding their phenolic profiles, total phenolic contents (TPC), antioxidant capacity (DPPH and ABTS), and in vitro inhibition against key enzymes relevant for hyperglycemia (α-amylase and α-glucosidase) and hypertension (angiotensin I-converting enzyme, ACE-I) in both free and cell wall-bound fractions. TPC varied from 132.2 to 262.5 mg of gallic acid equivalents/100g dry weight (DW), and around 88% of TPC and antioxidant capacity were found in the bound form. Vanillin, vanillic, protocatechuic, ferulic, and p-coumaric acids were detected by HPLC in free fractions, whereas ferulic and p-coumaric acids were found in the bound form. Pisankalla accession (red kernel) had the highest ferulic acid content (269.5 mg/100g DW). No α-amylase and ACE-I inhibition were found; however, all free fractions inhibited α-glucosidase (10.8-72.5%). Principal component analysis revealed that darker samples (free fraction) showed higher TPC and antioxidant capacity, while α-glucosidase inhibition was related to yellow-colored samples.
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Affiliation(s)
- Adrian González-Muñoz
- Laboratorio de Química y Bioquímica de Alimentos, Escuela de Alimentos, Facultad de Recursos Naturales, Pontificia Universidad Católica de Valparaíso , Avenida Waddington 716, Valparaíso, Chile
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Murray NP, Reyes E, Badinez L, Orellana N, Fuentealba C, Olivares R, Porcell J, Dueñas R. Effect of androgen blockade on HER-2 and matrix metalloproteinase-2 expression on bone marrow micrometastasis and stromal cells in men with prostate cancer. ScientificWorldJournal 2013; 2013:281291. [PMID: 23766685 PMCID: PMC3666220 DOI: 10.1155/2013/281291] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Accepted: 04/04/2013] [Indexed: 01/22/2023] Open
Abstract
INTRODUCTION HER-2 has been associated with castrate resistant prostate cancer and matrix metalloproteinase-2 (MMP-2) in the dissemination and invasion of tumor cells as well as activating angiogenesis. We present an immunocytochemical study of the effect of androgen blockade on the expression of HER-2 and MMP-2 in bone marrow micrometastasis and the surrounding stromal cells in men with prostate cancer. METHODS AND PATIENTS A cross-sectional study of men with prostate cancer. Touch preps were obtained from bone marrow biopsies of men with prostate cancer, before and after radical prostatectomy and during androgen blockade. Micrometastasis detected with anti-PSA immunocytochemistry underwent processing with anti-HER-2 and anti-MMP-2 immunocytochemistry. Patients were defined as HER-2 positive or negative, MMP-2 negative or an MMP-2 pattern described as border or central and stromal MMP-2 defined as positive or negative. The expression of the biomarkers was compared before and after primary treatment and during androgen blockade in relation to the serum PSA at the time of sampling and duration of androgen blockade. RESULTS 191 men participated, 35 men before surgery and 43 after surgery; there were no significant differences in HER-2 expression between groups, there was no MMP-2 expression centrally or stromal expression of MMP-2. In men with androgen blockade, HER-2 expression was significantly higher; there was a trend for increasing HER-2 expression up to 5 years; central MMP-2 expression significantly increased after 3 years, while stromal MMP-2 significantly increased after 6 years. MMP-2 expression both in micrometastasis and stroma was significantly associated with HER-2 expression. Expression of MMP-2 at the border of the micrometastasis was not associated with HER-2 expression and occurred in the absence of androgen blockade. CONCLUSIONS Androgen blockade decreases serum PSA by eliminating HER-2 negative prostate cancer cells. However, there is early selection of HER-2 positive cancer cells which leads to androgen independence and to increased expression of MMP-2 activity in the micrometastasis. The increased MMP-2 activity in the micrometastasis increases the expression of MMP-2 in the surrounding stromal cells and thus could promote angiogenesis and tumor growth resulting in macrometastatic androgen independent disease.
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Affiliation(s)
- N P Murray
- Hospital de Carabineros of Chile, Simón Bolívar 2200 Ñuñoa, 7770199 Santiago, Chile.
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Murray NP, Reyes E, Tapia P, Badinez L, Orellana N, Fuentealba C, Olivares R, Dueñas R. A performance analysis of the presence of malignant circulating prostate cells as a predictive factor for the detection of prostate cancer in the first, second and third prostate biopsy. ARCH ESP UROL 2013; 66:335-341. [PMID: 23676536] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
OBJECTIVES Serum prostate specific antigen and digital rectal examination are the tests used as screening tests to detect prostate cancer. However, only approximately 30% of men with suspicion of cancer have it confirmed on prostate biopsy, and not all of these need treatment. Detection of circulating tumor cells in localized prostate cancer has given variable results, but it could be a useful complementary screening tool to detect prostate cancer in men with abnormal screening tests before the evaluation with prostate biopsy. This may be more so in subsequent biopsies where serum PSA has a decreased diagnostic yield. To evaluate the diagnostic yield of the detection of CPCs as a complementary PC screening test in a population fulfilling criteria for an initial, second and third prostate biopsy for suspicion of PC. METHODS A prospective screening study of consecutive patients aged 45-80 years presenting to the urologist for PC screening. Inclusion criteria were PSA >4.0 ng/ml, PSA velocity >0.35 ng/ml/year and/or DRE suspicious for cancer. Patients fulfilling inclusion criteria had blood taken for CPC detection and then underwent 12-core transrectal prostate biopsy. Double immune-his-tochemical staining with anti-PSA and anti-P504S was used to detect CPCs. Both cytologist and pathologist were blinded to the results of the biopsy, CPC results and clinical details. The diagnostic yield of the presence or absence of CPC was evaluated; the prostate biopsy was classified as cancer or no-cancer. RESULTS 282 men participated, 83 undergoing of these undergoing a second and 38 a third biopsy, with a mean age of 66.2 ± 8.9 years and a median serum PSA of 5.10 ng/ml, 5.45 ng/ml and 6.45 ng/ml for first, second and third biopsies. Cancer was detected in 33,6%, 10.8% and 29.0% of first, second and third biopsies respectively, CPCs were detected in 36.9%, 21.7% and 36.8% of the patients. Sensibility, specificity and negative predictive value were 86% ,91% and 94% for the first biopsy, 89%, 87% and 99% for the second and 100% , 89% and 100% for third biopsy respectively. All the CPC determinations were interpretable. There were 11 false negative cases, all with small low grade tumors. Of the 29 men with a false positive CPC, 8/10 had cancer detected in the subsequent biopsy. CONCLUSIONS The use of CPC detection could be useful as a complementary prostate cancer screening test, especially for excluding cancer, and including patients with indications for repeat biopsies. Men with a false positive CPC detection had a high risk of detecting cancer in the succeeding biopsy.
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Affiliation(s)
- N P Murray
- Hospital Carabineros of Chile, Ñuñoa, Santiago, Chile.
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Rossón S, Fuentealba C, Hormazábal C, Villena C, Brieba F. Enfermedad de Parkinson y demencia, calidad de vida y sobrecarga del cuidador. Intervención multidisciplinaria en Atención Primaria. Rev chil salud pública 2013. [DOI: 10.5354/0719-5281.2013.26639] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Introducción: Objetivos del tratamiento de la enfermedad de Parkinson y la demencia son controlar síntomas, conservar funcionalidad y calidad de vida de pacientes y cuidadores y disminuir la sobrecarga del cuidador. Terapia ocupacional y educación tienen utilidad. Objetivo: Evaluar el efecto de una intervención multidisciplinaria en la calidad de vida de cuidadores y pacientes con demencia y/o Parkinson y en la sobrecarga del cuidador. Materiales y método: Diseño cuasi-experimental, 29 pacientes con enfermedad de Parkinson y/o demencia, comuna Vitacura y sus cuidadores. Evaluación de calidad de vida del paciente y cuidador mediante escala WHOQOLBREF y SF-36 respectivamente y la sobrecarga del cuidador mediante escala Zarit. Se realizó intervención con sesiones educativas, talleres de autoayuda y actividades integrativas. Se realizó terapia ocupacional en domicilio. Análisis estadístico con SPSS® versión 17. Resultados: La sobrecarga del cuidador disminuyó significativamente (diferencia promedio de 22 puntos escala Zarit, p
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Rossón S, Fuentealba C, Hormazábal C, Villena C, Brieba F. Enfermedad de Parkinson y demencia, calidad de vida y sobrecarga del cuidador. Intervención multidisciplinaria en Atención Primaria. Revista Chilena de Salud Pública 2013. [DOI: 10.5354/0717-3652.2013.26639] [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: 11/01/2022] Open
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Liccioli S, Catalano S, Kutz S, Lejeune M, Verocai G, Duignan P, Fuentealba C, Hart M, Ruckstuhl K, Massolo A. Gastrointestinal parasites of coyotes (Canis latrans) in the metropolitan area of Calgary, Alberta, Canada. CAN J ZOOL 2012. [DOI: 10.1139/z2012-070] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Disease ecology is a relevant but relatively unexplored subject of research in urban coyotes ( Canis latrans Say, 1823). In fact, this carnivore may play a role in the circulation of parasites that can have implications on the health of humans and domestic dogs, but can also be affected by pathogens transmitted from domestic reservoirs. To investigate the gastrointestinal parasites of urban coyotes in Calgary, Alberta, Canada, we analyzed 61 carcasses and 247 fecal samples collected within the metropolitan area, including city parks, in 2009–2010. We found nine parasite taxa: Toxascaris leonina (Linstow, 1902), Uncinaria stenocephala (Railliet, 1884), Ancylostoma caninum (Ercolani, 1859), Pterygodermatites affinis (Jägerskiöld, 1904), Trichuris vulpis (Froelich, 1789), Echinococcus multilocularis Leuckart, 1863, Taenia crassiceps (Zeder, 1800), genus Giardia Kunstler, 1882, and genus Cystoisospora Frenkel, 1977. Factors related to coyote ecology, habitat characteristics, and dog management likely influence the community of coyote parasites in an urban environment, and need to be taken into account to assess the actual role of this carnivore in the maintenance of parasites in the city landscape. Further research is needed to assess the current risk for transmission of potentially zoonotic parasites (e.g., E. multilocularis, T. crassiceps, Giardia sp.) among coyotes, dogs, and humans.
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Affiliation(s)
- S. Liccioli
- Department of Ecosystem and Public Health, Faculty of Veterinary Medicine, University of Calgary, 3280 Hospital Drive Northwest, Calgary, AB T2N 4Z6, Canada
| | - S. Catalano
- Department of Ecosystem and Public Health, Faculty of Veterinary Medicine, University of Calgary, 3280 Hospital Drive Northwest, Calgary, AB T2N 4Z6, Canada
| | - S.J. Kutz
- Department of Ecosystem and Public Health, Faculty of Veterinary Medicine, University of Calgary, 3280 Hospital Drive Northwest, Calgary, AB T2N 4Z6, Canada
| | - M. Lejeune
- Canadian Cooperative Wildlife Health Centre Alberta, 3280 Hospital Drive Northwest, Calgary, AB T2N 4Z6, Canada
| | - G.G. Verocai
- Department of Ecosystem and Public Health, Faculty of Veterinary Medicine, University of Calgary, 3280 Hospital Drive Northwest, Calgary, AB T2N 4Z6, Canada
| | - P.J. Duignan
- Department of Ecosystem and Public Health, Faculty of Veterinary Medicine, University of Calgary, 3280 Hospital Drive Northwest, Calgary, AB T2N 4Z6, Canada
| | - C. Fuentealba
- Ross University, P.O. Box 334, Basseterre, Saint Kitts, Saint Kitts and Nevis
| | - M. Hart
- Department of Ecosystem and Public Health, Faculty of Veterinary Medicine, University of Calgary, 3280 Hospital Drive Northwest, Calgary, AB T2N 4Z6, Canada
| | - K.E. Ruckstuhl
- Department of Biological Sciences, University of Calgary, 2500 University Drive Northwest, Calgary, AB T2N 1N4, Canada
| | - A. Massolo
- Department of Ecosystem and Public Health, Faculty of Veterinary Medicine, University of Calgary, 3280 Hospital Drive Northwest, Calgary, AB T2N 4Z6, Canada
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Murray NP, Reyes E, Tapia P, Orellana N, Dueñas R, Fuentealba C, Badinez L. Diagnostic performance of malignant prostatic cells detection in blood for early detection of prostate cancer: comparison to prostatic biopsy. ARCH ESP UROL 2011; 64:961-971. [PMID: 22228894] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
OBJECTIVES Serum prostate specific antigen and digital rectal examination are the tests used as screening tests to detect prostate cancer. However, only approximately 30% of men with suspicion of cancer have it confirmed on prostate biopsy, and not all of these need treatment. Detection of circulating tumor cells in localized prostate cancer has given variable results, but it could be a useful complementary screening tool to detect prostate cancer in men with abnormal screening tests before the evaluation with prostate biopsy. To evaluate the diagnostic yield of the detection of mCPC as a complementary PC screening test in a population fulfilling criteria for a prostate biopsy for suspicion of PC. METHODS A prospective screening study of consecutive patients aged 45-80 years presenting to the urologist for PC screening. Inclusion criteria were PSA >4.0 ng/ml, PSA velocity >0.35 ng/ml/year and/or DRE suspicious for cancer. Patients fulfilling inclusion criteria had blood taken for mCPC detection and then underwent 12-core transrectal prostate biopsy. Double immune-histochemical staining with anti-PSA and anti-P504S was used to detect mCPC. Both cytologist and pathologist were blinded to the results of the biopsy, mCPC results and clinical details. The diagnostic yield of the presence or absence of mCPC was evaluated; the prostate biopsy was classified as cancer or no -cancer. RESULTS 228 men participated, with a mean age of 66.8 ± 8.8 years and a median serum PSA of 5.15 ng/ml. 28.6% of the biopsies were positive for PC, and mCPC were detected in 31.0%of all cases. Sensibility, specificity and negative predictive value were 86.2%, 90.8% and 94.3% respectively. The negative and positive like-lihood ratios were 9.36 and 0.15. In men with a PSA <4.0ngml, 13.3% had cancer detected on biopsy, with a sensibility and specificity for mCPC detection of 83.3% and 84.6% and negative predictive value of 97.1%. All the mCPC determinations were interpretable. There were 9 false negative cases, all with small low grade tumors. CONCLUSIONS The use of mCPC detection could be useful as a complementary prostate cancer screening test, especially for excluding cancer, including patients with a serum PSA <4.0 ng/ml.
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Affiliation(s)
- Nigel P Murray
- Hospital de Carabineros de Chile, Santiago de Chile, Chile.
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Saavedra J, Fuentealba C, Yáñez L, Bravo M, Quiroz W, Lukacsy G, Carot J. Chemometric approaches for the zoning of Pinot Noir wines from the Casablanca valley, Chile. Food Chem 2011. [DOI: 10.1016/j.foodchem.2011.01.132] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Cuchacovich M, Soto L, Edwardes M, Gutierrez M, Llanos C, Pacheco D, Sabugo F, Alamo M, Fuentealba C, Villanueva L, Gatica H, Schiattino I, Salazaro L, Catalan D, Valenzuela O, Salazar-Onfray F, Aguillón JC. Tumour necrosis factor (TNF)alpha -308 G/G promoter polymorphism and TNFalpha levels correlate with a better response to adalimumab in patients with rheumatoid arthritis. Scand J Rheumatol 2007; 35:435-40. [PMID: 17343250 DOI: 10.1080/03009740600904284] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.3] [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: 10/23/2022]
Abstract
OBJECTIVE To investigate the influence of -308 tumour necrosis factor-alpha (TNFalpha) promoter polymorphism and circulating TNFalpha levels in the clinical response to adalimumab treatment in patients with rheumatoid arthritis (RA). METHODS Eighty-one patients with active RA were genotyped for the -308 TNFalpha polymorphism by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) analysis and subdivided into two groups for each polymorphism (G/A and G/G genotype). All received 40 mg of adalimumab subcutaneously every other week. We compared the groups' clinical responses to adalimumab at 8, 16, and 24 weeks using the Disease Activity Score in 28 joints (DAS28). RESULTS Both groups showed a significant improvement from baseline. A significant difference between groups was found at week 24. We found that 88.2% of G/G versus 68.4% of G/A for the -308 polymorphism were DAS28 responders (p = 0.05). The score improvement at week 24 was 2.5 +/- 1.3 in the G/G group and 1.8 +/- 1.3 in the G/A group for the -308 polymorphism (p = 0.04). The median of serum TNFalpha levels of the G/A group were lower than those of the G/G group, and statistically different at weeks 8 and 24 (p < 0.039 and p < 0.043). When comparing baseline levels to those achieved at 8, 16, and 24 weeks for the whole group, only responder patients showed a statistically significant overall increase in TNFalpha over time (p < 0.000001). CONCLUSION A relationship between DAS28 improvement, the -308 G/G polymorphism, and increased circulating TNFalpha levels was found in Chilean RA patients treated with adalimumab.
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Affiliation(s)
- M Cuchacovich
- Rheumatology Section, Department of Medicine, Clinical Hospital University of Chile, Santiago.
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Aburto EM, Cribb AE, Fuentealba C. Effect of chronic exposure to excess dietary copper and dietary selenium supplementation on liver specimens from rats. Am J Vet Res 2001; 62:1423-7. [PMID: 11560272 DOI: 10.2460/ajvr.2001.62.1423] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [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: 11/20/2022]
Abstract
OBJECTIVE To determine the effects of chronic exposure to excess dietary copper (Cu) on liver specimens from rats and the effects of dietary selenium (Se) supplementation in experimental Cu toxicosis. ANIMALS 60 weanling male Fischer 344 rats. PROCEDURE Rats were randomly assigned to 4 groups of 15 rats each and fed 1 of the following 4 diets: high Cu (500 microg/g)/adequate Se (0.2 microg/g); high Cu (500 microg/g)/supplemented Se (2 microg/g); adequate Cu (18 microg/g)/adequate Se (0.2 microg/g); or, adequate Cu (18 microg/g)/supplemented Se (2 microg/g). Five rats per group were euthanatized after 3, 6, and 12 months, and liver specimens were obtained for histologic examination, histochemistry, metal analysis by atomic absorption spectrophotometry, measurement of glutathione peroxidase activity, and assessment of lipid peroxidation, using quantification of malondialdehyde (MDA) by the thiobarbituric acid reaction. RESULTS Hepatic Cu concentration was significantly higher in rats fed high Cu diets (range, 9 to 18 microg/g of tissue [wet weight]), compared with rats receiving adequate Cu diets (4.0 to 5.7 microg/g of tissue). Rats fed high-Cu diets for 3, 6, and 12 months had mild multifocal hepatitis often surrounding necrotic foci. However, an increase in hepatic MDA content, indicative of lipid peroxidation, was not detected in these rats. Development of morphologic changes was not prevented by use of dietary Se supplementation. CONCLUSION AND CLINICAL RELEVANCE Long-term exposure to excess dietary Cu caused mild hepatic lesions in Fischer 344 rats. Dietary Se supplementation did not prevent hepatic damage in rats with Cu toxicosis.
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Affiliation(s)
- E M Aburto
- Department of Pathology and Microbiology, Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, Canada
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Pacheco D, Alvarez ME, Vizcarra G, Fuentealba C, Marinovic MA, Ballesteros F. [Characteristics of hospitalization of patients with rheumatic diseases admitted to a tertiary care hospital]. Rev Med Chil 2001; 129:653-9. [PMID: 11510206] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
BACKGROUND The diagnostic profile of patients with rheumatic diseases admitted to a general hospital is variable. AIM To report the epidemiological profile of patients with rheumatic diseases admitted to a tertiary care hospital. MATERIAL AND METHODS All admissions to a Medicine ward of a general hospital and seen by the Rheumatology team were prospectively registered during one year in 1999. Patients were classified as primarily admitted for a rheumatic disease or admitted for other cause that required a consultation with the Rheumatology team. RESULTS One hundred forty five admissions due to rheumatic diseases were registered. Of these, 82 were due to primary rheumatic diseases. Systemic lupus erythematosus, rheumatoid arthritis and vasculitis were the main diagnoses and the mean hospital stay was 18.5 days. Sixty three patients required a consultation with the Rheumatology team specially due to osteoarthritis and crystal induced diseases. CONCLUSIONS Admissions due to rheumatic diseases are prolonged, correspond to 0.46% of all admissions and the main responsible disease is systemic lupus erythematosus.
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Affiliation(s)
- D Pacheco
- Departamento de Reumatología Hospital Clínico San Borja-Arriarán, Facultad de Medicina Universidad de Chile
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Mc-Nab P, Fuentealba C, Ballesteros F, Pacheco D, Alvarez M, Dabanch J, Cona E. [Nocardia asteroides infection in a patient with systemic lupus erythematosus]. Rev Med Chil 2000; 128:526-8. [PMID: 11008357] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Nocardia asteroides infection are unusually observed in systemic Lupus erithematous (SLE) patients. They are generally associated to steroidal and immunosuppressive therapy. We report a 24 years old female with SLE diagnosed in 1994 who developed a severe preeclampsia in her first pregnancy requiring emergency caesarean section. Post partum acute renal failure and type IV lupus nephropathy were treated with hemodialysis, methylprednisolone, cyclophosphamide and prednisone. Three months later, while she was receiving the fourth cyclophosphamide dose, she presented with a pleuro pneumonia and occipital abscess, both caused by Nocardia asteroides. She was treated with cotrimoxazole + cefixime and pleural decortication was required. Five months later, she developed Meningitis caused by Nocardia asteroides and hydrocephalus. She was treated with ceftriaxone, vancomycin, cotrimoxazole and ventricular shunting procedure. Two months later, a retroperitoneal abscess was diagnosed and surgically drained but the patient died, due to a methicillin-resistant Staphylococcus aureus septicemia.
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Affiliation(s)
- P Mc-Nab
- Hospital San Borja-Arriarán, Departamento Medicina, Universidad de Chile.
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Pacheco D, Berdichevsky R, Ballesteros F, Jérez J, Sobarzo E, Fuentealba C, Pino C, Sanhueza R, Estefan ME, Medina C. [Education of patients with rheumatoid arthritis. Assessment of a survey of interests]. Rev Med Chil 1998; 126:188-94. [PMID: 9659755] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND The congruence of interests between health care providers and clients is essential if subjects with chronic diseases will be educated. AIM To assess, in patients with rheumatoid arthritis, those fields in which they would like to receive education. PATIENTS AND METHODS Eighty eight patients with rheumatoid arthritis were surveyed about the topics in which they would like to be educated. The inquiry included medical aspects, handicap overcoming, social issues and labor aspects. RESULTS Eighty two percent of patients were interested in medical aspects, 77% in social issues and 71% in handicap overcoming. Eighty three percent of patients with greater handicaps preferred handicap overcoming, 75% social aspects and 74% medical aspects. Younger patients had a greater interest in labor aspects, those with a recently diagnosed disease were interested in their legal rights and those with a prolonged disease wanted information about self help groups. CONCLUSIONS The greater educational interests of patients with rheumatoid arthritis were on medical aspects. However, those impaired by the disease were interested in handicap overcoming. Age and duration of the disease also influenced the educational interests of patients. Thus, education in these patients must be individualized.
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Affiliation(s)
- D Pacheco
- Departamento de Reumatología, Hospital Clínico San Borja-Arriarán, Universidad de Chile, Santiago, Chile.
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Fuentealba C, Guest S, Haywood S, Horney B. Chronic hepatitis: a retrospective study in 34 dogs. Can Vet J 1997; 38:365-73. [PMID: 9187802 PMCID: PMC1576879] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The aims of this study were to characterize the histological changes observed in 34 accessioned cases of canine chronic hepatitis and to correlate these changes with the clinical pathological data. Cases of chronic hepatitis were subdivided into 6 categories: chronic active hepatitis (10/34), chronic persistent hepatitis (7/32), chronic cholestatic hepatitis (6/34), fibrosing hepatitis with cirrhosis (3/34), chronic cholangiohepatitis (3/34), and miscellaneous secondary hepatitis (5/34). Iron accumulation was a consistent finding in all livers examined. Although all cases of chronic hepatitis had elevated liver enzymes, no correlation was detected between biochemical parameters and the severity of morphologic changes. Similarly, no correlation was detected between rhodanine staining for copper and morphologic or biochemical indicators of cholestasis. However, presence of copper correlated well with reticulo-fibrosis (r = 0.8) and bile duct hyperplasia, suggesting that changes in the hemodynamics of the hepatic acini due to fibrosis could influence storage of copper.
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Affiliation(s)
- C Fuentealba
- Department of Pathology and Microbiology, Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, Prince Edward Island
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Almendras FE, Jones SR, Fuentealba C, Wright GM. In vitro infection of a cell line from Ictalurus nebulosus with Piscirickettsia salmonis. Can J Vet Res 1997; 61:66-8. [PMID: 9008805 PMCID: PMC1189373] [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: 02/03/2023]
Abstract
Piscirickettsia salmonis, the etiologic agent of salmonid rickettsial septicemia (SRS), affects several species of salmonids. Previous reports using the appearance of cytopathic effect (CPE) as the criterion for susceptibility, showed that Piscirickettsia salmonis (ATCC strain) can be grown in vitro in some cells lines derived from salmonid fish, but not in BB cells from brown bullhead (Ictalurus nebulosus) and BF-2 cells from bluegill (Lepomis macrochirus). In this study we describe growth of P. salmonis (ATCC strain VR 1361) in a cell line previously believed to be nonpermissive for this organism. CPE was first detected in chinook salmon embryo (CHSE-214) and epithelioma papulosum ciprini (EPC) cell lines at 6 d postinfection (dpi). In contrast, using BB cell line, CPE was first detected 45 dpi and the monolayer completed CPE by 78 dpi. Electron microscopic examination of BB cells 78 dpi revealed free, intracytoplasmic and extracellular localization of the agent. P. salmonis was also observed within membrane-bounded vacuoles in BB cells, similar to that described in CHSE 214 cells. Contrary to earlier reports, results from the present study show that the BB cell line, is susceptible to Piscirickettsia salmonis infection. The delayed onset of CPE in BB cells in comparison to other permissive cell lines suggests that BB cells are not ideal hosts for P. salmonis. Interestingly, however, these results demonstrate that P. salmonis can infect non-salmonid cell lines, and raises the possibility that non-salmonid fish may play a role in the persistence and transmission of SRS in the natural environment.
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Affiliation(s)
- F E Almendras
- Department of Pathology & Microbiology, Atlantic Veterinary College, University of Prince Edward Island, Charlottetown
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Fuentealba C, Hanna P. Mange induced by Trixacarus caviae in a guinea pig. Can Vet J 1996; 37:749-50. [PMID: 9111699 PMCID: PMC1576682] [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: 02/04/2023]
Affiliation(s)
- C Fuentealba
- Department of Pathology and Microbiology, Atlantic Veterinary College, University of Prince Edward Island, Charlottetown
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Pacheco D, Berdichevsky R, Ballesteros F, Fuentealba C, Arinoviche R, Jérez J. [Impact of an educational manual on knowledge and attitudes of rheumatic patients and health care workers]. Rev Med Chil 1996; 124:1071-6. [PMID: 9197020] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Education may induce voluntary behavioral changes in patients that lead to an improvement in health status. AIM To assess the impact of the educational manual "Aches and Pain" on knowledge and attitudes of patients with chronic rheumatism and paramedics, using an instrument with 40 asseverations extracted from the manual. PATIENTS AND METHODS Seventy seven patients and 42 paramedics were studied. The assessment instrument was responded before and after reading chapters of the manual, selected by the authors. Knowledge was quantified according to the number of correct answers. Adaptation to disease, optimism and self help capacity were the evaluated attitudes, using a five point scale. RESULTS The study was completed by 48 patients and 42 paramedics. Knowledge improved from 19.9 +/- 5.3 to 25.6 +/-6.15 correct answers in the former and from 23.6 +/- 4.9 to 30.3 +/- 5.5 in the latter (p < 0.001). In patients there were improvements in the degree of adaptation to disease from 3.6 +/- 0.9 to 4.0 +/- 0.8 and in self-help capacity from 4.0 +/- 0.8 to 4.3 +/- 0.8; optimism did not improve significantly. CONCLUSIONS The educational manual had an impact on knowledge and improved rheumatic patient's attitudes towards the disease.
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Affiliation(s)
- D Pacheco
- Departamento de Reuinatología, Hospital Clínico San Borja-Arriarán, Universidad de Chile, Santiago de Chile
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Yanoff SR, Fuentealba C, Boothe HW, Rogers KS. Tracheal defect and embryonal rhabdomyosarcoma in a young dog. Can Vet J 1996; 37:172-3. [PMID: 8681290 PMCID: PMC1576635] [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: 02/01/2023]
Affiliation(s)
- S R Yanoff
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, Texas A&M University, College Station 77843, USA
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Affiliation(s)
- A P Adams
- Department of Health Management, University of Prince Edward Island, Charlottetown, Prince Edward Island
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Fuentealba C, Blue-McLendon A. Liposarcoma arising from the mandibular bone marrow in a ferret. Can Vet J 1995; 36:779-80. [PMID: 8748452 PMCID: PMC1687074] [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: 02/02/2023]
Affiliation(s)
- C Fuentealba
- Department of Pathology and Microbiology, Atlantic Veterinary College, University of Prince Edward Island, Charlottetown
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Wicher V, Baughn RE, Fuentealba C, Shadduck JA, Abbruscato F, Wicher K. Enteric infection with an obligate intracellular parasite, Encephalitozoon cuniculi, in an experimental model. Infect Immun 1991; 59:2225-31. [PMID: 1904839 PMCID: PMC257999 DOI: 10.1128/iai.59.7.2225-2231.1991] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Rabbits were intrarectally infected with 3 doses (5 x 10(3), 5 x 10(5), and 5 x 10(7] of an obligate intracellular parasite, Encephalitozoon cuniculi, with or without prior colonic lavages. Although chronic administration of enemas seems to interfere to some degree with the intestinal translocation of the parasite, systemic infection was observed in both manipulated and nonmanipulated animals. The animals responded with antibodies of immunoglobulin A (IgA) and IgG isotypes, reflecting the route of infection. They also produced significant amounts of circulating immune complexes composed of IgA and IgG antibodies and E. cuniculi antigens. Lesions compatible with encephalitozoonosis were seen in the liver, kidney, lung, and brain. In all instances, nonmanipulated animals had more severe lesions than manipulated rabbits given the same dose of parasites. Levels of serum antibodies, circulating immune complexes, and histopathologic changes were associated with the infection dose. The presented data suggest that human microsporidiosis may also be transmitted via the rectal route. It is, therefore, of clinical relevance in view of several reports of microsporidian infections in patients with acquired immunodeficiency.
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Affiliation(s)
- V Wicher
- Wadsworth Center for Laboratories and Research, New York State Department of Health, Albany 12201-0509
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Florenzano R, Pemjean A, Orpinas P, Feuerhake O, Fuentealba C, Valdés M, Manzi J. [Teaching of alcoholism in Chilean medical schools: a curriculum survey]. Rev Med Chil 1985; 113:1188-93. [PMID: 3837303] [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: 01/07/2023]
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