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Ayetigbo O, Arufe S, Kouassi A, Adinsi L, Adesokan M, Escobar A, Delgado LF, Tanimola A, Oroniran O, Kendine Vepowo C, Nakitto M, Khakasa E, Chijioke U, Nowakunda K, Ngoh Newilah G, Otegbayo B, Akissoe N, Lechaudel M, Tran T, Alamu EO, Maziya-Dixon B, Mestres C, Dufour D. Review of instrumental texture measurements as phenotypic tool to assess textural diversity of root, tuber and banana food products. J Sci Food Agric 2024; 104:4527-4539. [PMID: 37872724 DOI: 10.1002/jsfa.13072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 09/25/2023] [Accepted: 10/24/2023] [Indexed: 10/25/2023]
Abstract
Roots, tubers and bananas (RTBs) contribute immensely to food security and livelihoods in sub-Saharan Africa, Asia and Latin America. The adoption of RTB genotypes in these regions relies on the interplay among agronomic traits, ease of processing and consumer preference. In breeding RTBs, until recently little attention was accorded key textural traits preferred by consumers. Moreover, a lack of standard, discriminant, repeatable protocols that can be used to measure the textural traits deter linkages between breeding better RTB genotypes and end user/consumer preferences. RTB products texture - that is, behaviour of RTB food products under unique deformations, such as disintegration and the flow of a food under force - is a critical component of these preferences. The preferences consumers have for certain product texture can be evaluated from expert sensory panel and consumer surveys, which are useful tools in setting thresholds for textural traits, and inform breeders on what to improve in the quality of RTBs. Textural characterization of RTBs under standard operating procedures (SOPs) is important in ensuring the standardization of texture measurement conditions, predictability of textural quality of RTBs, and ultimately definition of RTB food product profiles. This paper reviews current SOPs for the textural characterization of RTBs, including their various associated methods, parameters, challenges and merits. Case studies of texture characterized during development of SOPs and evaluation of texture of RTB populations are discussed, together with insights into key textural attributes and correlations between instrumental, sensory and consumer assessment of texture unique to various RTB food products. Hardness was considered a universal key textural attribute to discriminate RTBs. The review should provide adequate insight into texture of RTB food products and critical factors in their measurement. It aims to promote inclusion of texture in breeding pipelines by investigating which textural traits are prioritized by consumers, particularly since the inclusion of textural traits has recently gained prominence by breeders in improving RTBs. © 2023 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Oluwatoyin Ayetigbo
- French Agricultural Research Centre for International Development (CIRAD), UMR QualiSud, Rue Jean François-Breton, Montpellier, France
- QualiSud, Univ. Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France
| | - Santiago Arufe
- French Agricultural Research Centre for International Development (CIRAD), UMR QualiSud, Rue Jean François-Breton, Montpellier, France
- QualiSud, Univ. Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France
| | - Antonin Kouassi
- French Agricultural Research Centre for International Development (CIRAD), UMR QualiSud, Rue Jean François-Breton, Montpellier, France
- Université Nangui Abrogoua (UNA), Abidjan, Ivory Coast
| | - Laurent Adinsi
- Laboratoire de Sciences des Aliments, Faculte des Sciences Agronomiques, Universite d'Abomey-Calavi (UAC-FSA), Calavi, Benin
| | - Michael Adesokan
- Food and Nutrition Laboratory, International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria
| | - Andres Escobar
- The Alliance of Bioversity and the International Center for Tropical Agriculture (CIAT), Cali, Colombia
| | - Luis Fernando Delgado
- The Alliance of Bioversity and the International Center for Tropical Agriculture (CIAT), Cali, Colombia
| | - Abiola Tanimola
- Department of Food Science and Technology, Bowen University, Iwo, Nigeria
| | - Oluyinka Oroniran
- Department of Food Science and Technology, Bowen University, Iwo, Nigeria
| | - Cédric Kendine Vepowo
- African Centre for Banana and Plantain Research (CARBAP), Douala, Cameroon
- University of Douala, Douala, Cameroon
| | | | | | - Ugo Chijioke
- National Root Crops Research Institute, Umudike (NRCRI), Umuahia, Nigeria
| | - Kephas Nowakunda
- National Agricultural Research Laboratories (NARL), Kawanda, Uganda
| | - Gérard Ngoh Newilah
- African Centre for Banana and Plantain Research (CARBAP), Douala, Cameroon
- University of Dschang, Dschang, Cameroon
| | - Bolanle Otegbayo
- Department of Food Science and Technology, Bowen University, Iwo, Nigeria
| | - Noel Akissoe
- Laboratoire de Sciences des Aliments, Faculte des Sciences Agronomiques, Universite d'Abomey-Calavi (UAC-FSA), Calavi, Benin
| | - Mathieu Lechaudel
- QualiSud, Univ. Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France
- UMR Qualisud, CIRAD, F-97130 Capesterre-Belle-Eau, Guadeloupe, France
| | - Thierry Tran
- French Agricultural Research Centre for International Development (CIRAD), UMR QualiSud, Rue Jean François-Breton, Montpellier, France
- QualiSud, Univ. Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France
- The Alliance of Bioversity and the International Center for Tropical Agriculture (CIAT), Cali, Colombia
| | - Emmanuel Oladeji Alamu
- Food and Nutrition Laboratory, International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria
- Food and Nutrition Sciences Laboratory, International Institute of Tropical Agriculture (IITA), Lusaka, Zambia
| | - Busie Maziya-Dixon
- Food and Nutrition Laboratory, International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria
| | - Christian Mestres
- French Agricultural Research Centre for International Development (CIRAD), UMR QualiSud, Rue Jean François-Breton, Montpellier, France
- QualiSud, Univ. Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France
| | - Dominique Dufour
- French Agricultural Research Centre for International Development (CIRAD), UMR QualiSud, Rue Jean François-Breton, Montpellier, France
- QualiSud, Univ. Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France
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Meghar K, Tran T, Delgado LF, Ospina MA, Moreno JL, Luna J, Londoño L, Dufour D, Davrieux F. Hyperspectral imaging for the determination of relevant cooking quality traits of boiled cassava. J Sci Food Agric 2024; 104:4782-4792. [PMID: 37086039 DOI: 10.1002/jsfa.12654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 04/18/2023] [Accepted: 04/22/2023] [Indexed: 05/03/2023]
Abstract
BACKGROUND The purpose of this study was to investigate the potential of hyperspectral imaging for the characterization of cooking quality parameters, dry matter content (DMC), water absorption (WAB), and texture in cassava genotypes contrasting for their cooking quality. RESULTS Hyperspectral images were acquired on cooked and fresh intact longitudinal and transversal slices from 31 cassava genotypes harvested in March 2022 in Colombia. Different chemometric methods were tested for the quantification of DMC, WAB, and texture parameters. Data analysis was conducted through partial least squares regression, K nearest neighbors regression, support vector machine regression and CovSel multiple linear regression (CovSel_MLR). Efficient performances were obtained for DMC using CovSel_MLR with, coefficient of multiple determinationR p 2 = 0.94 , root-mean-square error of prediction RMSEP = 0.96 g/100 g, and ratio of the standard deviation values RPD = 3.60. High heterogeneity was observed between contrasting genotypes. The predicted distribution of DMC within the root can be homogeneous or heterogeneous depending on the genotype. Weak predictions were obtained for WAB and texture parameters. CONCLUSIONS This study showed that hyperspectral imaging could be used as a high-throughput phenotyping tool for the visualization of DMC in contrasting cooking quality genotypes. Further improvement of protocols and larger datasets are required for WAB and texture quality traits. © 2023 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Karima Meghar
- UMR Qualisud, CIRAD, Montpellier, France
- QualiSud, Univ Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France
| | - Thierry Tran
- UMR Qualisud, CIRAD, Montpellier, France
- QualiSud, Univ Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France
- UMR QualiSud, CIRAD, Cali, Colombia
- Cassava Program, Alliance of Bioversity-International Center for Tropical Agriculture (CIAT), Cali, Colombia
| | - Luis Fernando Delgado
- Cassava Program, Alliance of Bioversity-International Center for Tropical Agriculture (CIAT), Cali, Colombia
| | - Maria Alejandra Ospina
- Cassava Program, Alliance of Bioversity-International Center for Tropical Agriculture (CIAT), Cali, Colombia
| | - Jhon Larry Moreno
- Cassava Program, Alliance of Bioversity-International Center for Tropical Agriculture (CIAT), Cali, Colombia
| | - Jorge Luna
- Cassava Program, Alliance of Bioversity-International Center for Tropical Agriculture (CIAT), Cali, Colombia
| | - Luis Londoño
- Cassava Program, Alliance of Bioversity-International Center for Tropical Agriculture (CIAT), Cali, Colombia
| | - Dominique Dufour
- UMR Qualisud, CIRAD, Montpellier, France
- QualiSud, Univ Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France
| | - Fabrice Davrieux
- UMR Qualisud, CIRAD, Montpellier, France
- QualiSud, Univ Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France
- UMR QualiSud, CIRAD, Saint-Pierre, France
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Arnaud E, Menda N, Tran T, Asiimwe A, Kanaabi M, Meghar K, Forsythe L, Kawuki R, Ellebrock B, Kayondo IS, Agbona A, Zhang X, Mendes T, Laporte MA, Nakitto M, Ssali RT, Asfaw A, Uwimana B, Ogbete CE, Makunde G, Maraval I, Mueller LA, Bouniol A, Fauvelle E, Dufour D. Connecting data for consumer preferences, food quality, and breeding in support of market-oriented breeding of root, tuber, and banana crops. J Sci Food Agric 2024; 104:4514-4526. [PMID: 37226655 DOI: 10.1002/jsfa.12710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 03/25/2023] [Accepted: 05/24/2023] [Indexed: 05/26/2023]
Abstract
The 5-year project 'Breeding roots, tubers and banana products for end user preferences' (RTBfoods) focused on collecting consumers' preferences on 12 food products to guide breeding programmes. It involved multidisciplinary teams from Africa, Latin America, and Europe. Diverse data types were generated on preferred qualities of users (farmers, family and entrepreneurial processors, traders or retailers, and consumers). Country-based target product profiles were produced with a comprehensive market analysis, disaggregating gender's role and preferences, providing prioritised lists of traits for the development of new plant varieties. We describe the approach taken to create, in the roots, tubers, and banana breeding databases, a centralised and meaningful open access to sensory information on food products and genotypes. Biochemical, instrumental textural, and sensory analysis data are then directly connected to the specific plant record while user survey data, bearing personal information, were analysed, anonymised, and uploaded in a repository. Names and descriptions of food quality traits were added into the Crop Ontology for labelling data in the databases, along with the various methods of measurement used by the project. The development and application of standard operating procedures, data templates, and adapted trait ontologies improved the data quality and its format, enabling the linking of these to the plant material studied when uploaded in the breeding databases or in repositories. Some modifications to the database model were necessary to accommodate the food sensory traits and sensory panel trials. © 2023 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Elizabeth Arnaud
- Digital Solutions Team, Digital Inclusion Lever, Bioversity International, Montpellier Office, Montpellier, France
| | - Naama Menda
- Boyce Thompson Institute (BTI), Ithaca, NY, USA
| | - Thierry Tran
- CIRAD, UMR QualiSud, Montpellier, France
- University of Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France
- International Centre for Tropical Agriculture (CIAT), Cali, Colombia
| | - Amos Asiimwe
- CIRAD, UMR QualiSud, Montpellier, France
- University of Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France
| | - Michael Kanaabi
- National Crops Resources Research Institute (NaCRRI), Kampala, Uganda
| | - Karima Meghar
- CIRAD, UMR QualiSud, Montpellier, France
- University of Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France
| | - Lora Forsythe
- Natural Resources Institute (NRI), Faculty of Engineering & Science, Livelihoods and Institutions Department, University of Greenwich, London, UK
| | - Robert Kawuki
- National Crops Resources Research Institute (NaCRRI), Kampala, Uganda
| | | | | | - Afolabi Agbona
- International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria
| | - Xiaofei Zhang
- International Centre for Tropical Agriculture (CIAT), Cali, Colombia
| | | | - Marie-Angélique Laporte
- Digital Solutions Team, Digital Inclusion Lever, Bioversity International, Montpellier Office, Montpellier, France
| | | | | | - Asrat Asfaw
- International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria
| | - Brigitte Uwimana
- International Institute of Tropical Agriculture (IITA), Kampala, Uganda
| | | | | | - Isabelle Maraval
- CIRAD, UMR QualiSud, Montpellier, France
- University of Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France
| | | | - Alexandre Bouniol
- CIRAD, UMR QualiSud, Montpellier, France
- University of Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France
- CIRAD, UMR QualiSud, Cotonou, Bénin
| | - Eglantine Fauvelle
- CIRAD, UMR QualiSud, Montpellier, France
- University of Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France
| | - Dominique Dufour
- CIRAD, UMR QualiSud, Montpellier, France
- University of Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France
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Mestres C, Taylor M, McDougall G, Arufe S, Tran T, Nuwamanya E, Dufour D, Nakitto M, Meghar K, Rinaldo D, Ollier L, Domingo R, Moreno JL, Delgado LF, Kouassi HA, Diby NAS, Mbeguie-A-Mbeguie D, Akissoe N, Adinsi L, Rolland-Sabate A. Contrasting effects of polysaccharide components on the cooking properties of roots, tubers and bananas. J Sci Food Agric 2024; 104:4652-4661. [PMID: 37559127 DOI: 10.1002/jsfa.12914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 07/18/2023] [Accepted: 08/10/2023] [Indexed: 08/11/2023]
Abstract
BACKGROUND Consumer preferences for boiled or fried pieces of roots, tubers and bananas (RTBs) are mainly related to their texture. Different raw and cooked RTBs were physiochemically characterized to determine the effect of biochemical components on their cooking properties. RESULTS Firmness in boiled sweetpotato increases with sugar and amylose contents but no significant correlation was observed between other physicochemical characteristics and cooking behaviour. Hardness of boiled yam can be predicted by dry matter (DM) and galacturonic acid (GalA) levels. For cassava, no significant correlation was found between textural properties of boiled roots and DM, but amylose and Ca2+ content were correlated with firmness, negatively and positively, respectively. Water absorption of cassava root pieces boiled in calcium chloride solutions was much lower, providing indirect evidence that pectins are involved in determining cooking quality. A highly positive correlation between textural attributes and DM was observed for fried plantain, but no significant correlation was found with GalA, although frying slightly reduced GalA. CONCLUSION The effect of main components on texture after cooking differs for the various RTBs. The effect of global DM and major components (i.e. starch, amylose) is prominent for yam, plantain and sweetpotato. Pectins also play an important role on the texture of boiled yam and play a prominent role for cassava through interaction with Ca2+. © 2023 Bill and Melinda Gates Foundation. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Christian Mestres
- CIRAD, UMR QualiSud, Montpellier, France
- QualiSud, Univ Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France
| | - Mark Taylor
- Plant Biochemistry and Food Quality Group, James Hutton Institute, Dundee, Scotland
| | - Gordon McDougall
- Plant Biochemistry and Food Quality Group, James Hutton Institute, Dundee, Scotland
| | - Santiago Arufe
- CIRAD, UMR QualiSud, Montpellier, France
- QualiSud, Univ Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France
| | - Thierry Tran
- CIRAD, UMR QualiSud, Montpellier, France
- QualiSud, Univ Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France
- CIRAD, UMR QualiSud, CIAT, Cali, Colombia
- The Alliance of Bioversity International and the International Center for Tropical Agriculture (CIAT), Cali, Colombia
| | | | - Dominique Dufour
- CIRAD, UMR QualiSud, Montpellier, France
- QualiSud, Univ Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France
| | | | - Karima Meghar
- CIRAD, UMR QualiSud, Montpellier, France
- QualiSud, Univ Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France
| | | | - Lea Ollier
- CIRAD, UMR QualiSud, Montpellier, France
- QualiSud, Univ Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France
| | - Romain Domingo
- CIRAD, UMR QualiSud, Montpellier, France
- QualiSud, Univ Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France
| | - Jhon Larry Moreno
- The Alliance of Bioversity International and the International Center for Tropical Agriculture (CIAT), Cali, Colombia
| | - Luis Fernando Delgado
- The Alliance of Bioversity International and the International Center for Tropical Agriculture (CIAT), Cali, Colombia
| | | | - N'Nan Afoué Sylvie Diby
- Université Peleforo Gon Coulibaly, Korhogo, Côte d'Ivoire
- Centre National de Recherche Agronomique, Abidjan, Côte d'Ivoire
| | - Didier Mbeguie-A-Mbeguie
- CIRAD, UMR QualiSud, Montpellier, France
- QualiSud, Univ Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France
- Université Nangui Abrogoua, Abidjan, Côte d'Ivoire
- CIRAD, UMR Qualisud, Abidjan, Côte d'Ivoire
| | - Noël Akissoe
- Laboratoire de Sciences des Aliments, Faculte des Sciences Agronomiques, Universite d'Abomey-Calavi (UAC-FSA), Jericho, Benin
| | - Laurent Adinsi
- Laboratoire de Sciences des Aliments, Faculte des Sciences Agronomiques, Universite d'Abomey-Calavi (UAC-FSA), Jericho, Benin
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Ospina MA, Tran T, Pizarro M, Luna J, Salazar S, Londoño L, Ceballos H, Becerra Lopez-Lavalle LA, Dufour D. Content and distribution of cyanogenic compounds in cassava roots and leaves in association with physiological age. J Sci Food Agric 2024; 104:4851-4859. [PMID: 37961830 DOI: 10.1002/jsfa.13123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 07/26/2023] [Accepted: 11/14/2023] [Indexed: 11/15/2023]
Abstract
BACKGROUND Cassava roots are widely consumed in tropical regions of Asia, Africa, and Latin America. Although the protein, vitamin, carotenoid, and mineral content in the leaves makes them a nutritionally attractive option, their consumption is limited due to their high levels of cyanogenic compounds (CCs). In this study, the CC content in different parts of the plant (leaves, storage root cortex, and parenchyma) was assessed at harvest for 50 landrace genotypes representative of cassava diversity in Latin America. The changes in CC in leaves at different physiological ages (3, 6, 9, and 11 months after planting) were also investigated. RESULTS The average CC was higher in the cortex (804 ppm) and leaves (655 ppm) than in root parenchyma (305 ppm). Genotypes from different regions of Latin America, as identified by seven genetic diversity groups, differed significantly in CC levels. The Andean and Amazon groups had, respectively, the lowest (P = 0.0008) and highest (P < 0.0001) CC levels in all three parts of the plants. Cyanogenic compound concentrations were higher in leaves from young plants (P < 0.0001) and decreased with increasing physiological age. CONCLUSION The results help to guide the selection of parental lines with low CC levels for breeding and to contribute to the expanded use of cassava and its by-products for food and feed. Cassava for fresh consumption, especially, requires varieties with low total CC content, especially in the root cortex and parenchyma. COL1108 (204, 213, and 174 ppm, respectively, in the parenchyma, cortex, and leaves) and PER297 (83, 238, and 299 ppm, respectively, in the parenchyma, cortex, and leaves) can fulfill this requirement. © 2023 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- María A Ospina
- Alliance of Bioversity and CIAT, Cassava Program, CGIAR Research Program on Roots Tubers and Bananas (RTB), Palmira, Colombia
| | - Thierry Tran
- Alliance of Bioversity and CIAT, Cassava Program, CGIAR Research Program on Roots Tubers and Bananas (RTB), Palmira, Colombia
- CIRAD, UMR QualiSud, Cali, Colombia
- QualiSud, Univ Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France
| | - Monica Pizarro
- Alliance of Bioversity and CIAT, Cassava Program, CGIAR Research Program on Roots Tubers and Bananas (RTB), Palmira, Colombia
| | - Jorge Luna
- Alliance of Bioversity and CIAT, Cassava Program, CGIAR Research Program on Roots Tubers and Bananas (RTB), Palmira, Colombia
| | - Sandra Salazar
- Alliance of Bioversity and CIAT, Cassava Program, CGIAR Research Program on Roots Tubers and Bananas (RTB), Palmira, Colombia
| | - Luis Londoño
- Alliance of Bioversity and CIAT, Cassava Program, CGIAR Research Program on Roots Tubers and Bananas (RTB), Palmira, Colombia
| | - Hernan Ceballos
- Alliance of Bioversity and CIAT, Cassava Program, CGIAR Research Program on Roots Tubers and Bananas (RTB), Palmira, Colombia
| | - Luis A Becerra Lopez-Lavalle
- Alliance of Bioversity and CIAT, Cassava Program, CGIAR Research Program on Roots Tubers and Bananas (RTB), Palmira, Colombia
| | - Dominique Dufour
- Alliance of Bioversity and CIAT, Cassava Program, CGIAR Research Program on Roots Tubers and Bananas (RTB), Palmira, Colombia
- CIRAD, UMR QualiSud, Cali, Colombia
- QualiSud, Univ Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France
- CIRAD, UMR QualiSud, Montpellier, France
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Otegbayo BO, Tran T, Ricci J, Gibert O. In situ dynamic rheological analysis of raw yam tubers: a potential phenotyping tool for quality evaluation. J Sci Food Agric 2024; 104:4746-4757. [PMID: 37127918 DOI: 10.1002/jsfa.12662] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 03/27/2023] [Accepted: 05/02/2023] [Indexed: 05/03/2023]
Abstract
BACKGROUND Most rheological analyses in yam have been done on starch gels, which requires starch extraction from the tubers. In situ rheology bypasses the need of starch extraction and relies on the original cell structure and complex matrix organization under stress or strain. Dynamic rheological properties of tuber from 16 accessions belonging to four yam species (Dioscorea rotundata, D. alata. D. bulbifera and D. dumetorum) were investigated for potential use as a medium throughput phenotyping screening tool that can indicate the quality of yam food products or their industrial potentials. RESULTS Rheographs of the tubers illustrated differences in the structure of D. bulbifera compared to other yam species. High initial storage modulus (G') of yam parenchyma indicated tubers with strong and rigid structure which do not lose their structural integrity easily on heating. Dioscorea rotundata and D. alata varieties exhibited a lower temperature at which gelatinization took place (Tgel) equivalent to the irreversible transition during starch gelatinization (75.3 and 79.8 °C) and took shorter time (867 and 958 s, respectively) to reach the G' maximum, compared to other species. The stress relaxation test showed that the higher the dry matter of the tubers, the higher the work to rupture the structure. CONCLUSION Rheological characteristics G', loss modulus (G″), swelling capacity and Tgel showed potential as suitable quality indicators for yam products. In situ rheological characterization of yam tubers could be used as an instrumental screening tool to phenotype for quality in yam products. © 2023 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
| | - Thierry Tran
- CIRAD, Montpellier, France
- Qualisud, Univ Montpellier, Avignon Universite, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France
- Alliance of Bioversity-International Center for Tropical Agriculture (CIAT), Cali, Colombia
| | - Julien Ricci
- CIRAD, Montpellier, France
- Qualisud, Univ Montpellier, Avignon Universite, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France
| | - Olivier Gibert
- CIRAD, Montpellier, France
- Qualisud, Univ Montpellier, Avignon Universite, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France
- CIRAD, AGAP Institute, Montpellier, France
- University of Montpellier, CIRAD-INRAE-Institut Agro, University of Montpellier, Montpellier, France
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Ospina MA, Moreno JL, Tran T, Jaramillo AM, Gallego-Castillo S, Ospina B, Dufour D. Kinetics of thermal degradation of carotenoids related to potential of mixture of wheat, cassava and sweet potato flours in baking products. J Sci Food Agric 2024; 104:4671-4679. [PMID: 37406186 DOI: 10.1002/jsfa.12831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 06/23/2023] [Accepted: 07/06/2023] [Indexed: 07/07/2023]
Abstract
BACKGROUND The consumption of foods such as sweet potato and cassava with high levels of carotenoids is a possible solution to reduce vitamin A deficiency. In this study, we evaluated the kinetics of thermal degradation of carotenoids. The content of carotenoids was quantified by high-performance liquid chromatography, first in fresh material, then in flour and finally in bakery products using mixtures of wheat, sweet potato and cassava. The degree of acceptance of the bakery products by children was also assessed through a sensory acceptance test. RESULTS The study found that the degradation of carotenoid compounds in sweet potato followed first-order kinetics and fitted the Arrhenius equation with correlations of R2 > 0.9. The retention rates of all-trans-β-carotene were 77%, 56% and 48% at cooking temperatures of 75, 85 and 95 °C respectively, during a cooking time of 20 min. The concentrations of all-trans-β-carotene, after baking, for bread, cookies and cake were 15, 19 and 14 μg g-1 db, respectively. In a sensory acceptance test carried out in a school, 47.6% of the boys and 79.2% of the girls rated the cookies made from a mixture of cassava, sweet potato and wheat flour with the indicator I like it a lot. CONCLUSION The content of carotenoid compounds was reduced by exposure to high temperatures and long cooking times. The combinations of cooking time and temperature which minimized degradation of all-trans-β-carotene occurred at 75 °C-20 min and 95 °C-10 min. All-trans-β-carotene retentions for bread, cookies and cake were 25%, 15% and 11% respectively. The mixture of wheat, sweet potato and cassava flour can be considered in the development of cookies with positive contributions of all-trans-β-carotenes and with a good acceptance by children between 9 and 13 years old. © 2023 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Maria A Ospina
- Cassava Program, Alliance of Bioversity and CIAT, Cali, Colombia
| | | | - Thierry Tran
- Cassava Program, Alliance of Bioversity and CIAT, Cali, Colombia
- UMR QualiSud, CIRAD, Montpellier, France
- QualiSud, University of Montpellier, CIRAD, Institut Agro, University of Avignon, IRD, University of La Réunion, Montpellier, France
| | | | - Sonia Gallego-Castillo
- Harvest Plus Program, Alliance of Bioversity and CIAT, Cali, Colombia
- CLAYUCA Corporation, Cali, Colombia
| | | | - Dominique Dufour
- Cassava Program, Alliance of Bioversity and CIAT, Cali, Colombia
- UMR QualiSud, CIRAD, Montpellier, France
- QualiSud, University of Montpellier, CIRAD, Institut Agro, University of Avignon, IRD, University of La Réunion, Montpellier, France
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8
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Daval C, Tran T, Verdier F, Martin A, Alexandre H, Grandvalet C, Tourdot-Maréchal R. Identification of Key Parameters Inducing Microbial Modulation during Backslopped Kombucha Fermentation. Foods 2024; 13:1181. [PMID: 38672854 PMCID: PMC11049054 DOI: 10.3390/foods13081181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 03/27/2024] [Accepted: 04/10/2024] [Indexed: 04/28/2024] Open
Abstract
The aim of this study was to assess the impact of production parameters on the reproducibility of kombucha fermentation over several production cycles based on backslopping. Six conditions with varying oxygen accessibility (specific interface surface) and initial acidity (through the inoculation rate) of the cultures were carried out and compared to an original kombucha consortium and a synthetic consortium assembled from yeasts and bacteria isolated from the original culture. Output parameters monitored were microbial populations, biofilm weight, key physico-chemical parameters and metabolites. Results highlighted the existence of phases in microbial dynamics as backslopping cycles progressed. The transitions between phases occurred faster for the synthetic consortium compared to the original kombucha. This led to microbial dynamics and fermentative kinetics that were reproducible over several cycles but that could also deviate and shift abruptly to different behaviors. These changes were mainly induced by an increase in the Saccharomyces cerevisiae population, associated with an intensification of sucrose hydrolysis, sugar consumption and an increase in ethanol content, without any significant acceleration in the rate of acidification. The study suggests that the reproducibility of kombucha fermentations relies on high biodiversity to slow down the modulations of microbial dynamics induced by the sustained rhythm of backslopping cycles.
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Affiliation(s)
- Claire Daval
- Institut Agro, Université Bourgogne Franche-Comté, Université Bourgogne, INRAE, UMR PAM 1517, 21000 Dijon, France (H.A.); (C.G.); (R.T.-M.)
| | - Thierry Tran
- Institut Agro, Université Bourgogne Franche-Comté, Université Bourgogne, INRAE, UMR PAM 1517, 21000 Dijon, France (H.A.); (C.G.); (R.T.-M.)
| | | | - Antoine Martin
- Biomère, 10B Rue du Nouveau Bêle, 44470 Carquefou, France
| | - Hervé Alexandre
- Institut Agro, Université Bourgogne Franche-Comté, Université Bourgogne, INRAE, UMR PAM 1517, 21000 Dijon, France (H.A.); (C.G.); (R.T.-M.)
| | - Cosette Grandvalet
- Institut Agro, Université Bourgogne Franche-Comté, Université Bourgogne, INRAE, UMR PAM 1517, 21000 Dijon, France (H.A.); (C.G.); (R.T.-M.)
| | - Raphaëlle Tourdot-Maréchal
- Institut Agro, Université Bourgogne Franche-Comté, Université Bourgogne, INRAE, UMR PAM 1517, 21000 Dijon, France (H.A.); (C.G.); (R.T.-M.)
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9
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Tran T, Ferté A, Vacher M. Simulating Attochemistry: Which Dynamics Method to Use? J Phys Chem Lett 2024; 15:3646-3652. [PMID: 38530933 PMCID: PMC11000647 DOI: 10.1021/acs.jpclett.4c00106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 03/11/2024] [Accepted: 03/22/2024] [Indexed: 03/28/2024]
Abstract
Attochemistry aims to exploit the properties of coherent electronic wavepackets excited via attosecond pulses to control the formation of photoproducts. Such molecular processes can, in principle, be simulated with various nonadiabatic dynamics methods, yet the impact of the approximations underlying the methods is rarely assessed. The performances of widely used mixed quantum-classical approaches, Tully surface hopping, and classical Ehrenfest methods are evaluated against the high-accuracy DD-vMCG quantum dynamics. This comparison is conducted for the valence ionization of fluorobenzene. Analyzing the nuclear motion induced in the branching space of the nearby conical intersection, the results show that the mixed quantum-classical methods reproduce quantitatively the average motion of a quantum wavepacket when initiated on a single electronic state. However, they fail to properly capture the nuclear motion induced by an electronic wavepacket along the derivative coupling, the latter originating from the quantum electronic coherence property, key to attochemistry.
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Affiliation(s)
- Thierry Tran
- Nantes Université, CNRS, CEISAM
UMR 6230, F-44000 Nantes, France
| | - Anthony Ferté
- Nantes Université, CNRS, CEISAM
UMR 6230, F-44000 Nantes, France
| | - Morgane Vacher
- Nantes Université, CNRS, CEISAM
UMR 6230, F-44000 Nantes, France
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10
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Eicher C, Tran T, Munier E, Coulon J, Favier M, Alexandre H, Reguant C, Grandvalet C. Influence of pH on Oenococcus oeni metabolism: Can the slowdown of citrate consumption improve its acid tolerance? Food Res Int 2024; 179:114027. [PMID: 38342547 DOI: 10.1016/j.foodres.2024.114027] [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: 12/01/2023] [Revised: 01/09/2024] [Accepted: 01/12/2024] [Indexed: 02/13/2024]
Abstract
Oenococcus oeni is the lactic acid bacteria most suited to carry out malolactic fermentation in wine, converting L-malic acid into L-lactic acid and carbon dioxide, thereby deacidifying wines. Indeed, wine is a harsh environment for microbial growth, partly because of its low pH. By metabolizing citrate, O. oeni maintains its homeostasis under acid conditions. Indeed, citrate consumption activates the proton motive force, helps to maintain intracellular pH, and enhances bacterial growth when it is co-metabolized with sugars. In addition, citrate metabolism is responsible for diacetyl production, an aromatic compound which bestows a buttery character to wine. However, an inhibitory effect of citrate on O. oeni growth at low pH has been highlighted in recent years. In order to understand how citrate metabolism can be linked to the acid tolerance of this bacterium, consumption of citrate was investigated in eleven O. oeni strains. In addition, malate and sugar consumptions were also monitored, as they can be impacted by citrate metabolism. This experiment highlighted the huge diversity of metabolisms between strains depending on their origin. It also showed the capacity of O. oeni to de novo metabolize certain end-products such as L-lactate and mannitol, a phenomenon never before demonstrated. It also enabled drawing hypotheses concerning the two positive effects that the slowing down of citrate metabolism could have on biomass production and malolactic fermentation occurring under low pH conditions.
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Affiliation(s)
- Camille Eicher
- UMR PAM, Université de Bourgogne, Institut Agro, INRAE, Dijon, France.
| | - Thierry Tran
- UMR PAM, Université de Bourgogne, Institut Agro, INRAE, Dijon, France
| | - Edouard Munier
- UMR PAM, Université de Bourgogne, Institut Agro, INRAE, Dijon, France
| | | | | | - Hervé Alexandre
- UMR PAM, Université de Bourgogne, Institut Agro, INRAE, Dijon, France
| | - Cristina Reguant
- Universitat Rovira i Virgili, Grup de Biotecnologia Enològica, Departament de Bioquímica i Biotecnologia, Tarragona, Catalonia, Spain
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11
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Fransén L, Tran T, Nandi S, Vacher M. Dissociation and Isomerization Following Ionization of Ethylene: Insights from Nonadiabatic Dynamics Simulations. J Phys Chem A 2024; 128:1457-1465. [PMID: 38358308 PMCID: PMC10911106 DOI: 10.1021/acs.jpca.3c06512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 01/31/2024] [Accepted: 02/01/2024] [Indexed: 02/16/2024]
Abstract
Photoionized and electronically excited ethylene C2H4+ can undergo H-loss, H2-loss, and ethylene-ethylidene isomerization, where the latter entails a hydrogen migration. Recent pioneering experiments with few-femtosecond extreme ultraviolet pulses and complementary theoretical studies have shed light on the photodynamics of this prototypical organic cation. However, no theoretical investigation based on dynamics simulations reported to date has described the mechanisms and time scales of dissociation and isomerization. Herein, we simulate the coupled electron-nuclear dynamics of ethylene following vertical ionization and electronic excitation to its four lowest-lying cationic states. The electronic structure is treated at the CASSCF level, with an active space large enough to describe bond breaking and formation. The simulations indicate that dissociation and isomerization take place mainly on the cationic ground state and allow the probing of previous hypotheses concerning the correlation between the photochemical outcome and the traversed conical intersections. The results, moreover, support the long-standing view that H2-loss may occur from the ethylidene form. However, the ethylene-ethylidene isomerization time predicted by the simulations is considerably longer than those previously inferred from indirect experimental measurements.
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Affiliation(s)
- Lina Fransén
- Nantes
Université, CNRS, CEISAM UMR 6230, F-44000 Nantes, France
| | - Thierry Tran
- Nantes
Université, CNRS, CEISAM UMR 6230, F-44000 Nantes, France
| | - Saikat Nandi
- Université
de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière
Matière, F-69622 Villeurbanne, France
| | - Morgane Vacher
- Nantes
Université, CNRS, CEISAM UMR 6230, F-44000 Nantes, France
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12
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Iragaba P, Adinsi L, Delgado LF, Nanyonjo AR, Nuwamanya E, Wembabazi E, Kanaabi M, Honfozo L, Hotegni F, Djibril-Moussa I, Londoño LF, Bugaud C, Dufour D, Kawuki RS, Akissoé N, Tran T. Definition of sensory and instrumental thresholds of acceptability for selection of cassava genotypes with improved boiling properties. J Sci Food Agric 2024. [PMID: 38319871 DOI: 10.1002/jsfa.13363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 08/01/2023] [Accepted: 02/07/2024] [Indexed: 02/08/2024]
Abstract
BACKGROUND Consumers of boiled cassava in Africa, Latin America and Asia use specific preference criteria to evaluate its cooking quality, in terms of texture, colour and taste. To improve adoption rates of improved cassava varieties intended for consumption after boiling, these preference criteria need to be determined, quantified and integrated as post-harvest quality traits in the target product profile of boiled cassava, so that breeding programs may screen candidate varieties based on both agronomic traits and consumer preference traits. RESULTS Surveys of various end-user groups identified seven priority quality attributes of boiled cassava covering root preparation, visual aspect, taste and texture. Three populations of contrasted cassava genotypes, from good-cooking to bad-cooking, in three countries (Uganda, Benin, Colombia) were then characterized according to these quality attributes by sensory quantitative descriptive analysis (QDA) and by standard instrumental methods. Consumers' preferences of the texture attributes mealiness and hardness were also determined. By analysis of correlations, the consumers' preferences scores were translated into thresholds of acceptability in terms of QDA scores, then in terms of instrumental measurements (water absorption during boiling and texture analysis). The thresholds of acceptability were used to identify among the Colombian and Benin populations promising genotypes for boiled cassava quality. CONCLUSION This work demonstrates the steps of determining priority quality attributes for boiled cassava and establishing their corresponding quantitative thresholds of acceptability. The information can then be included in boiled cassava target product profiles used by cassava breeders, for better selection and adoption rates of new varieties. © 2024 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Paula Iragaba
- National Crops Resources Research Institute (NaCRRI), Kampala, Uganda
| | - Laurent Adinsi
- Faculté des Sciences Agronomiques, Université d'Abomey-Calavi, Cotonou, Benin
- Ecole des Sciences et Techniques de Conservation et de Transformation des Produits Agricoles, Université Nationale d'Agriculture, Sakété, Benin
| | | | | | - Ephraim Nuwamanya
- National Crops Resources Research Institute (NaCRRI), Kampala, Uganda
| | - Enoch Wembabazi
- National Crops Resources Research Institute (NaCRRI), Kampala, Uganda
| | - Michael Kanaabi
- National Crops Resources Research Institute (NaCRRI), Kampala, Uganda
| | - Laurenda Honfozo
- Faculté des Sciences Agronomiques, Université d'Abomey-Calavi, Cotonou, Benin
| | - Francis Hotegni
- Faculté des Sciences Agronomiques, Université d'Abomey-Calavi, Cotonou, Benin
| | | | | | - Christophe Bugaud
- CIRAD, UMR Qualisud, Montpellier, France
- QualiSud, University of Montpellier, CIRAD, Institut Agro, University of Avignon, University of La Réunion, Montpellier, France
| | - Dominique Dufour
- CIRAD, UMR Qualisud, Montpellier, France
- QualiSud, University of Montpellier, CIRAD, Institut Agro, University of Avignon, University of La Réunion, Montpellier, France
| | | | - Noël Akissoé
- Faculté des Sciences Agronomiques, Université d'Abomey-Calavi, Cotonou, Benin
| | - Thierry Tran
- Alliance Bioversity - CIAT, Cali, Colombia
- QualiSud, University of Montpellier, CIRAD, Institut Agro, University of Avignon, University of La Réunion, Montpellier, France
- CIRAD, UMR Qualisud, Cali, Colombia
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13
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Hagopian G, Jiang X, Grant C, Brazel D, Kumar P, Yamamoto M, Jakowatz J, Chow W, Tran T, Shen W, Moyers J. Survival impact of post-operative immunotherapy in resected stage III cutaneous melanomas in the checkpoint era. ESMO Open 2024; 9:102193. [PMID: 38271786 PMCID: PMC10937207 DOI: 10.1016/j.esmoop.2023.102193] [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: 06/28/2023] [Revised: 10/03/2023] [Accepted: 11/01/2023] [Indexed: 01/27/2024] Open
Abstract
BACKGROUND Checkpoint inhibitors have shown improvement in recurrence-free survival in the post-operative setting for node-positive melanoma and were first approved in late 2015. However, single-agent checkpoint therapies have yet to show benefit to overall survival (OS) for lower-risk stage III cancers. We evaluated the OS benefit of post-operative immunotherapy in the National Cancer Database (NCDB). PATIENTS AND METHODS Patient cases were selected from the NCDB 2020 Participant Use File. Patients diagnosed with stage III cutaneous melanoma between 2016 and 2019 who underwent definitive resection for their melanoma were included. OS between those who received post-operative immunotherapy within 84 days of surgery and those who did not was analyzed by the Kaplan-Meier method. Demographic and clinical characteristics between the two groups were compared via Cox proportional hazard models. RESULTS 14 978 patients with stage III melanoma were included. Of those, 34.9% (n = 5234) received post-operative immunotherapy and 65.1% (n = 9744) did not. Using the American Joint Committee on Cancer version 8 (AJCCv8) staging, 36-month survival was significantly higher in patients who received post-operative immunotherapy compared to no post-operative systemic therapy in those diagnosed with stage IIIB (88.0% versus 84.7%, P = 0.011), IIIC (75.6% versus 68.1%, P < 0.001), or IIID (59.2% versus 48.4%, P = 0.002). No significant improvement in 36-month survival was seen in patients who received post-operative immunotherapy in patients with stage IIIA disease (93.0% versus 92.2%, P = 0.218). CONCLUSIONS Post-operative immunotherapy had an OS benefit in patients with AJCCv8 stage IIIB, IIIC, and IIID disease, but had no significant survival benefit for patients with stage IIIA melanomas.
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Affiliation(s)
- G Hagopian
- Department of Medicine, University of California Irvine Medical Center, Orange
| | - X Jiang
- Department of Statistics, University of California Irvine, Irvine
| | - C Grant
- Department of Medicine, University of California Irvine Medical Center, Orange
| | - D Brazel
- Department of Medicine, University of California Irvine Medical Center, Orange
| | - P Kumar
- Department of Medicine, University of California Irvine Medical Center, Orange
| | - M Yamamoto
- Division of Surgical Oncology, Department of Surgery, University of California Irvine Medical Center, Orange
| | - J Jakowatz
- Division of Surgical Oncology, Department of Surgery, University of California Irvine Medical Center, Orange
| | - W Chow
- Division of Hematology and Oncology, Department of Medicine, University of California Irvine Medical Center, Orange
| | - T Tran
- Division of Surgical Oncology, Department of Surgery, University of California Irvine Medical Center, Orange
| | - W Shen
- Department of Statistics, University of California Irvine, Irvine
| | - J Moyers
- The Angeles Clinic & Research Institute, A Cedars-Sinai Affiliate, Los Angeles, USA.
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Kim JK, Tam M, Karp JM, Oh C, Kim G, Solomon E, Concert CM, Vaezi AE, Li Z, Tran T, Zan E, Corby P, Feron-Rigodon M, Del Vecchio Fitz C, Goldberg JD, Hochman T, Givi B, Jacobson A, Persky M, Hu KS. A Phase II Trial Evaluating Rapid Mid-Treatment Nodal Shrinkage to Select for Adaptive Deescalation in p16+ Oropharyngeal Cancer Patients Undergoing Definitive Chemoradiation. Int J Radiat Oncol Biol Phys 2023; 117:S68-S69. [PMID: 37784553 DOI: 10.1016/j.ijrobp.2023.06.374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) The purpose of this study is to determine if rapid mid-treatment nodal shrinkage (RMNS) can identify patients with p16+ oropharyngeal cancer (OPC) who can be safely deescalated with reduced dose chemoradiation therapy (CRT). The primary endpoint was 2-year progression free survival (PFS). MATERIALS/METHODS Inclusion criteria were as follows: T1-3, N1, M0 (AJCC 8th edition) p16+ OPC with <10 pack-year smoking history. All patients were initially planned for standard dose CRT (70 Gy) and weekly cisplatin. Patients were evaluated with a CT scan at week 4 for RMNS, defined as >40% nodal volumetric reduction from baseline. If RMNS was achieved, they proceeded to deescalated CRT (60 Gy). If not, they received standard CRT. Biomarker correlates were collected at baseline and week 4 of CRT including plasma TTMV (tumor tissue modified viral) HPV DNA and MRI diffusion weighted imaging (DWI). Univariate logistic regression analyses (UVA) were performed to evaluate predictors of RMNS. Odds ratios with 95% CI are reported, using a p<0.05 for statistical significance with a two-sided test. Wilcoxon rank sum tests were used to evaluate differences between the two groups using p < 0.05, 2-sided) for statistical significance. All statistical procedures were performed using R () with no adjustments for multiple testing. RESULTS Thirty-six patients were enrolled: median age: 60 years; 81% male; primary site: 36% base of tongue, 53% tonsil, 11% both; T-stage: 39% T1, 50% T2, 11% T3; N-stage: 100% N1; any smoking history: 58% yes, 42% no; 67% (n = 24) had RMNS and received deescalated CRT while the remaining proceeded to standard CRT. At a median follow-up of 32.4 months, 2-year PFS between the standard and deescalated groups were 91.7% vs 90.9%, respectively (p = 0.97). All patients with recurrence underwent successful salvage treatment with 2-year OS 100% for all patients. On UVA, rapid TTMV HPV DNA clearance (baseline to week 4) (OR 12.0 [1.65-250], p = 0.034), lower MRI diffusivity (ADC) at baseline (OR 0.79 [0.61-0.97], p = 0.042) and week 4 (OR 0.76 [0.60-0.91], p = 0.009), and higher MRI diffusional kurtosis at baseline (OR 1.09 [1.01-1.21], p = 0.051) and week 4 (OR 1.24 [1.09-1.52], p = 0.009) were significantly associated with RMNS. When comparing the deescalated and standard cohorts, the mean baseline and week 4 MRI ADC were significantly lower and week 4 MRI diffusional kurtosis was significantly higher in the deescalated group. CONCLUSION In this phase II study, rapid mid-treatment nodal shrinkage appeared to select favorable risk p16+ oropharynx cancer patients for treatment de-escalation. Rapid clearance of TTMV HPV DNA at week 4 as well as MRI DWI biomarkers of low ADC and high diffusional kurtosis values were correlated with RMNS. A larger study is planned to incorporate RMNS and biomarkers for further treatment de-escalation. Additional trial information is available at ClinicalTrials.gov (Identifier: NCT03215719).
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Affiliation(s)
- J K Kim
- Department of Radiation Oncology, NYU Langone Health, New York, NY
| | - M Tam
- Department of Radiation Oncology, NYU Langone Health, New York, NY
| | - J M Karp
- NYU Grossman School of Medicine, Department of Radiation Oncology, New York City, NY
| | - C Oh
- Biostatistics, Department of Population Health, NYU Langone Health, New York, NY
| | - G Kim
- NYU Langone Health, New York, NY
| | - E Solomon
- Weill Cornell Medicine, Cornell University, New York, NY
| | - C M Concert
- Department of Radiation Oncology, NYU Langone Health, New York, NY
| | - A E Vaezi
- Perlmutter Cancer Center NYU Langone Long Island, Mineola, NY
| | - Z Li
- Department of Medical Oncology, NYU Langone Health, New York, NY
| | - T Tran
- Department of Otolaryngology, NYU Langone Health, New York, NY
| | - E Zan
- NYU School of Medicine and Langone Medical Center, New York, NY, United States
| | - P Corby
- University of Pennsylvania, School of Dental Medicine, Philadelphia, PA
| | | | | | - J D Goldberg
- New York University School of Medicine, New York, NY
| | - T Hochman
- NYU Langone Medical Center, New York, NY
| | - B Givi
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - A Jacobson
- Department of Otolaryngology-Head and Neck Surgery, NYU Langone Health, New York, NY
| | - M Persky
- Department of Otolaryngology, NYU Langone Health, New York, NY
| | - K S Hu
- NYU Langone Medical Center, New York, NY
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15
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Rodríguez P, Villamizar J, Londoño L, Tran T, Davrieux F. Quantification of Dry Matter Content in Hass Avocado by Near-Infrared Spectroscopy (NIRS) Scanning Different Fruit Zones. Plants (Basel) 2023; 12:3135. [PMID: 37687381 PMCID: PMC10490472 DOI: 10.3390/plants12173135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 08/28/2023] [Accepted: 08/29/2023] [Indexed: 09/10/2023]
Abstract
Accurate dry matter determination (DM) in Hass avocados is vital for optimal harvesting and ensuring fruit quality. Predictive models based on NIRS need to capture fruit DM gradient. This work aimed to determine the DM content in Hass avocado whole by NIRS scanning different fruit zones. Spectra were recorded for each zone of the fruit: peduncle (P), equator (E), and base (B). The calibration and validation included fruit from different orchards in two harvest cycles. The results show a DM gradient within the fruit: 24.47% (E), 24.68% (B), and 24.79% (P). The DM gradient was observed within the spectra using the RMSi (root mean square) criterion and PCA. The results show that at least one spectrum per fruit zone was needed to represent the variability within the fruit. The performances of the calibration using the whole set of data were R2: 0.74 and standard error of cross-validation (SECV) = 1.18%. In the validation stage using independent validation sets, the models showed similar performance (R2: 0.75, SECV 1.15%) with low values of the standard error of prediction (SEP): 1.62%. These results demonstrate the potential of near-infrared spectroscopy for high-throughput sorting of avocados based on their commercial quality.
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Affiliation(s)
- Pablo Rodríguez
- Research Unit ITAV: Innovaciones Tecnológicas para Agregar Valor a Recursos Agrícolas, Sector Llanogrande, Centro de Investigación La Selva, Corporación Colombiana de Investigación Agropecuaria-Agrosavia, km. 7, Vía Rionegro—Las Palmas, Rionegro-Antioquia 054048, Colombia;
| | - Jairo Villamizar
- Research Unit ITAV: Innovaciones Tecnológicas para Agregar Valor a Recursos Agrícolas, Sector Llanogrande, Centro de Investigación La Selva, Corporación Colombiana de Investigación Agropecuaria-Agrosavia, km. 7, Vía Rionegro—Las Palmas, Rionegro-Antioquia 054048, Colombia;
| | - Luis Londoño
- International Center for Tropical Agriculture (CIAT), Valle del Cauca, Palmira 763537, Colombia;
| | - Thierry Tran
- UMR Qualisud, Univ Montpellier, Avignon Université, Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD), Institut Agro, Institut de Recherche pour le Développement (IRD), Université de La Réunion, F-34398 Montpellier, France; (T.T.); (F.D.)
| | - Fabrice Davrieux
- UMR Qualisud, Univ Montpellier, Avignon Université, Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD), Institut Agro, Institut de Recherche pour le Développement (IRD), Université de La Réunion, F-34398 Montpellier, France; (T.T.); (F.D.)
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Vo T, Tran T, Ho T, Le C, Pham H, Tran H, Ho N, Cao T, Vo B. Clinical evaluation of hysterectomy for the treatment of invasive mole in Southern Vietnam. Eur Rev Med Pharmacol Sci 2023; 27:7720-7727. [PMID: 37667950 DOI: 10.26355/eurrev_202308_33426] [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: 09/06/2023]
Abstract
OBJECTIVE This study aimed to determine the rate of salvage chemotherapy and review associated factors in invasive mole patients treated by primary or delayed hysterectomy. PATIENTS AND METHODS This study was carried out at the Tu Du Hospital, where a total of 189 patients were diagnosed with invasive mole based on histologic examination by hysterectomy between 01/2016 to 12/2020. We used the life table method to estimate the cumulative rate. We applied the Cox proportional hazard model to determine the factors associated with the need for salvage chemotherapy. RESULTS At 12-month follow-up, 47 patients had required salvage chemotherapy. The incidence was 24.87% (95% CI: 18.88-31.66). Applying the multivariate model, prophylactic chemotherapy (HR = 2.75, 95% Cl: 1.20-6.30) and two weeks postoperative hCG value greater than 1,900 mIU/mL (HR = 4.30, 95% Cl: 2.08-8.87) increased the risk of requiring salvage chemotherapy. Postoperative chemotherapy decreased the risk of requiring salvage chemotherapy (HR = 0.43, 95% Cl: 0.22-0.83). CONCLUSIONS Hysterectomy can be considered safe and effective in treating invasive mole patients. Although patients were treated by hysterectomy, 24.87% of patients needed salvage chemotherapy to achieve remission. This study affirms the malignant nature of invasive mole, a subtype of gestational trophoblastic neoplasia (GTN). It is not purely a local invasion of molar villi. Postoperative chemotherapy plays an essential role in reducing the risk of requiring salvage chemotherapy.
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Affiliation(s)
- T Vo
- University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam.
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Tran T, Peterson S, Gubbels A. Impact of pelvic pain diagnosis and age of hysterectomy. Am J Obstet Gynecol 2023. [DOI: 10.1016/j.ajog.2022.12.169] [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: 03/11/2023]
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Tran T, Niu X, Wu J, Lu D, Leon RL, Minassian B, Mirpuri J. Maternal high fat diet exposure results in differential inflammatory gene expression, diminished hippocampal neurons and reduced sensitivity to stimuli in offspring, dependent on the maternal microbiome. Am J Med Sci 2023. [DOI: 10.1016/s0002-9629(23)00517-7] [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: 01/28/2023]
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Sarnavi HJ, Precoppe M, García‐Triñanes P, Chapuis A, Tran T, Bradley MSA, Müller J. Determining the heat of desorption for cassava products based on data measured by an automated gravimetric moisture sorption system. J Sci Food Agric 2023; 103:389-399. [PMID: 35897139 PMCID: PMC9826175 DOI: 10.1002/jsfa.12153] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 06/27/2022] [Accepted: 07/27/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND The isosteric heat of desorption is vital in evaluating the energy performance of food dryers. The isosteric heat of desorption was investigated for different cassava (Manihot esculenta Crantz) products prepared as flour or starch, with and without fermentation. An automated moisture sorption gravimetric analyser was used to measure the desorption isotherms over 10-90% relative humidity of the drying air at temperatures ranging from 25 to 65 °C. RESULTS Analysis of variance showed an imperceptible contribution of the preparation method in the measured desorption data. This finding also agreed with microscopical images, which revealed the lack of compelling structural differences among different products. A set of empirical sorption equations suggested by the ASAE standard was examined over the measured desorption isotherms. The standard error of estimation was found to be in the acceptable range of 2.36-3.71%. Furthermore, the fulfilment of the enthalpy-entropy compensation theory was considered as an additional criterion in the thermodynamic results of different sorption equations, besides their fitting adequacy. The modified Chung-Pfost equation has proved to be the most suitable equation for cassava products, as it is capable of reflecting the temperature dependency of the isosteric heat of desorption. The net isosteric heat of desorption obtained was in the range of 540-1110 kJ kg-1 for 0.10 kg kg-1 dry-basis moisture content and 52-108 kJ kg-1 for 0.25 kg kg-1 dry-basis moisture content. CONCLUSION These findings are technologically relevant for optimising common drying technologies such as flash and flatbed dryers. © 2022 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Hamed J Sarnavi
- Natural Resources Institute, Faculty of Engineering and ScienceUniversity of GreenwichChathamUK
| | - Marcelo Precoppe
- Natural Resources Institute, Faculty of Engineering and ScienceUniversity of GreenwichChathamUK
| | - Pablo García‐Triñanes
- Materials and Chemical Engineering Group, School of EngineeringUniversity of GreenwichChathamUK
| | - Arnaud Chapuis
- CIRAD, UMR QualisudSaint‐LouisSénégal
- Qualisud, Université de Montpellier, CIRAD, Montpellier SupAgro, Université d'Avignon, Université de La RéunionMontpellierFrance
| | - Thierry Tran
- Qualisud, Université de Montpellier, CIRAD, Montpellier SupAgro, Université d'Avignon, Université de La RéunionMontpellierFrance
- CGIAR Research Program on Roots Tubers and Bananas (RTB)The Alliance of Bioversity International and the International Center for Tropical Agriculture (CIAT)CaliColombia
| | - Michael SA Bradley
- Wolfson Centre for Bulk Solids Handling Technology, Faculty of Engineering & ScienceUniversity of GreenwichChathamUK
| | - Joachim Müller
- Tropics and Subtropics Group, Institute of Agricultural EngineeringUniversity of HohenheimStuttgartGermany
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Kim J, Tam M, Oh C, Feron-Rigodon M, Joseph B, Vaezi A, Li Z, Tran T, Kim G, Zan E, Corby P, Vecchio Fitz CD, Goldberg J, Hochman T, Givi B, Jacobson A, Persky M, Persky M, Hu K. Circulating Tumor HPV-DNA Kinetics in p16+ Oropharyngeal Cancer Patients Undergoing Adaptive Radiation De-Escalation Based on Mid-Treatment Nodal Response. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.1385] [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: 10/31/2022]
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21
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Tran T, Dym A, Rosania A, Nelson L, Ramdin C, Santos C. 91 The Promising Use of an Emergency Department Observation Unit to Manage Patients With Opioid Use Disorder. Ann Emerg Med 2022. [DOI: 10.1016/j.annemergmed.2022.08.114] [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: 11/30/2022]
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Dufour D, Rolland-Sabaté A, Mina Cordoba HA, Luna Melendez JL, Moreno Alzate JL, Pizzaro M, Guilois Dubois S, Sánchez T, Eiver Belalcazar J, Morante N, Tran T, Moreno-Santander M, Vélez-Hernández G, Ceballos H. Native and fermented waxy cassava starch as a novel gluten-free and clean label ingredient for baking and expanded product development. Food Funct 2022; 13:9254-9267. [PMID: 35980275 DOI: 10.1039/d2fo00048b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Amylose-free and wild-type cassava starches were fermented for up to 30 days and oven- or sun-dried. The specific volume (ν) after baking was measured in native and fermented starches. The average ν (across treatments) for waxy starch was 3.5 times higher than that in wild-type starches (17.6 vs. 4.8 cm3 g-1). The best wild-type starch (obtained after fermentation and sun-drying) had considerably poorer breadmaking potential than native waxy cassava (8.4 vs. 16.4 cm3 g-1, respectively). The best results were generally obtained through the synergistic combination of fermentation (for about 10-14 days) and sun-drying. Fermentation reduced viscosities and the weight average molar mass led to denser macromolecules and increased branching degree, which are linked to a high loaf volume. The absence of amylose, however, was shown to be a main determinant as well. Native waxy starch (neutral in taste, gluten-free, and considerably less expensive than the current alternatives to cassava) could become a new ingredient for the formulation of clean label-baked or fried expanded products.
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Affiliation(s)
- Dominique Dufour
- French Agricultural Research Centre for International Development, CIRAD, UMR Qualisud, Montpellier, France. .,French Agricultural Research Centre for International Development, CIRAD, UMR Qualisud, Cali, Colombia.,Qualisud, Univ. Montpellier, CIRAD, Montpellier SupAgro, Univ. d'Avignon, Univ. de La Réunion, Montpellier, France.,CGIAR Research Program on Roots, Tubers and Bananas (RTB), ABC: The Alliance of Bioversity International and the International Center for Tropical Agriculture (CIAT), Cali, Colombia
| | | | - Hansel A Mina Cordoba
- CGIAR Research Program on Roots, Tubers and Bananas (RTB), ABC: The Alliance of Bioversity International and the International Center for Tropical Agriculture (CIAT), Cali, Colombia
| | - Jorge Luis Luna Melendez
- CGIAR Research Program on Roots, Tubers and Bananas (RTB), ABC: The Alliance of Bioversity International and the International Center for Tropical Agriculture (CIAT), Cali, Colombia
| | - Jhon Larry Moreno Alzate
- CGIAR Research Program on Roots, Tubers and Bananas (RTB), ABC: The Alliance of Bioversity International and the International Center for Tropical Agriculture (CIAT), Cali, Colombia
| | - Mónica Pizzaro
- CGIAR Research Program on Roots, Tubers and Bananas (RTB), ABC: The Alliance of Bioversity International and the International Center for Tropical Agriculture (CIAT), Cali, Colombia
| | | | - Teresa Sánchez
- CGIAR Research Program on Roots, Tubers and Bananas (RTB), ABC: The Alliance of Bioversity International and the International Center for Tropical Agriculture (CIAT), Cali, Colombia
| | - John Eiver Belalcazar
- CGIAR Research Program on Roots, Tubers and Bananas (RTB), ABC: The Alliance of Bioversity International and the International Center for Tropical Agriculture (CIAT), Cali, Colombia
| | - Nelson Morante
- CGIAR Research Program on Roots, Tubers and Bananas (RTB), ABC: The Alliance of Bioversity International and the International Center for Tropical Agriculture (CIAT), Cali, Colombia
| | - Thierry Tran
- French Agricultural Research Centre for International Development, CIRAD, UMR Qualisud, Montpellier, France. .,French Agricultural Research Centre for International Development, CIRAD, UMR Qualisud, Cali, Colombia.,Qualisud, Univ. Montpellier, CIRAD, Montpellier SupAgro, Univ. d'Avignon, Univ. de La Réunion, Montpellier, France.,CGIAR Research Program on Roots, Tubers and Bananas (RTB), ABC: The Alliance of Bioversity International and the International Center for Tropical Agriculture (CIAT), Cali, Colombia
| | | | | | - Hernán Ceballos
- CGIAR Research Program on Roots, Tubers and Bananas (RTB), ABC: The Alliance of Bioversity International and the International Center for Tropical Agriculture (CIAT), Cali, Colombia
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Tran T, Qin M, Agak G, Teles R, Baugh A, To T, Kim J. 569 The role of siglecs in acne pathogenesis. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.579] [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: 10/17/2022]
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Tran T, Verdier F, Martin A, Alexandre H, Grandvalet C, Tourdot-Maréchal R. Oxygen management during kombucha production: Roles of the matrix, microbial activity, and process parameters. Food Microbiol 2022; 105:104024. [DOI: 10.1016/j.fm.2022.104024] [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] [Received: 09/13/2021] [Revised: 03/09/2022] [Accepted: 03/09/2022] [Indexed: 11/30/2022]
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Danilov D, Tran T, Bearpark MJ, Marangos JP, Worth GA, Robb MA. How electronic superpositions drive nuclear motion following the creation of a localized hole in the glycine radical cation. J Chem Phys 2022; 156:244114. [DOI: 10.1063/5.0093780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
In this work, we have studied the nuclear and electron dynamics in the glycine cation starting from localized hole states using the quantum Ehrenfest method. The nuclear dynamics is controlled both by the initial gradient and by the instantaneous gradient that results from the oscillatory electron dynamics (charge migration). We have used the Fourier transform (FT) of the spin densities to identify the “normal modes” of the electron dynamics. We observe an isomorphic relationship between the electron dynamics normal modes and the nuclear dynamics, seen in the vibrational normal modes. The FT spectra obtained this way show bands that are characteristic of the energy differences between the adiabatic hole states. These bands contain individual peaks that are in one-to-one correspondence with atom pair (+·) ↔ (·+) resonances, which, in turn, stimulate nuclear motion involving the atom pair. With such understanding, we anticipate “designer” coherent superpositions that can drive nuclear motion in a particular direction.
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Affiliation(s)
- Don Danilov
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, 82 Wood Lane, W12 0BZ London, United Kingdom
| | - Thierry Tran
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, 82 Wood Lane, W12 0BZ London, United Kingdom
- Department of Chemistry, University College London, 20 Gordon St., WC1H 0AJ London, United Kingdom
| | - Michael J. Bearpark
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, 82 Wood Lane, W12 0BZ London, United Kingdom
| | - Jon P. Marangos
- Department of Physics, Imperial College London, Blackett Lab, Prince Consort Road, SW7 2BW London, United Kingdom
| | - Graham A. Worth
- Department of Chemistry, University College London, 20 Gordon St., WC1H 0AJ London, United Kingdom
| | - Michael A. Robb
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, 82 Wood Lane, W12 0BZ London, United Kingdom
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Tay S, Bowen AC, Blyth CC, Clifford P, Clack R, Ford T, Herbert H, Kuthubutheen J, Mascaro F, O'Mahoney A, Rodrigues S, Tran T, Campbell AJ. A quality improvement study: Optimizing pneumococcal vaccination rates in children with cochlear implants. Vaccine 2022; 40:4531-4537. [PMID: 35718588 DOI: 10.1016/j.vaccine.2022.06.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 05/24/2022] [Accepted: 06/05/2022] [Indexed: 11/16/2022]
Abstract
Children with cochlear implants are at increased risk of invasive pneumococcal disease, with national and international guidelines recommending additional pneumococcal vaccines for these children. This study aimed to examine the pneumococcal immunization status and rate of invasive pneumococcal disease in children with cochlear implants at a tertiary paediatric hospital over a 12-year period. Additionally, the impacts of vaccination reminders and a dedicated immunization clinic on pneumococcal vaccination rates were assessed. This quality improvement study included 200 children who had received a cochlear implant through the Children's Hearing Implant Program at a tertiary paediatric hospital servicing the state of Western Australia. The majority of children (88%) were not up to date with additionally recommended pneumococcal vaccinations. Over the 12-year study period, 2% of children developed invasive pneumococcal disease associated with cochlear implant infections. Generic and personalized electronic immunization reminders improved pneumococcal vaccine up-take in this paediatric cochlear implant setting from 12% (19/153) at baseline to 49% (75/153, p < 0.0001) post implementation. The value of a nurse-led dedicated immunization clinic was also demonstrated with all children (42/42, 100%) up to date with Prevenar13 and the majority (34/42, 81%) up to date with Pneumovax23 post initiation of this referral pathway. These data support the expansion of this model to other medically-at-risk paediatric groups that have been highlighted consistently to be under-vaccinated.
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Affiliation(s)
- S Tay
- Immunisation Service, Department of Infectious Diseases, Perth Children's Hospital, Western Australia, Australia.
| | - A C Bowen
- Immunisation Service, Department of Infectious Diseases, Perth Children's Hospital, Western Australia, Australia; Wesfarmers Centre for Vaccines and Infectious Diseases, Telethon Kids Institute, University of Western Australia, Western Australia, Australia
| | - C C Blyth
- Immunisation Service, Department of Infectious Diseases, Perth Children's Hospital, Western Australia, Australia; Wesfarmers Centre for Vaccines and Infectious Diseases, Telethon Kids Institute, University of Western Australia, Western Australia, Australia
| | - P Clifford
- Immunisation Service, Department of Infectious Diseases, Perth Children's Hospital, Western Australia, Australia
| | - R Clack
- Children's Hearing Implant Program, Ear Nose and Throat Department, Perth Children's Hospital, Western Australia, Australia
| | - T Ford
- Immunisation Service, Department of Infectious Diseases, Perth Children's Hospital, Western Australia, Australia; Discipline of Paediatrics, School of Medicine, University of Western Australia, Crawley, Australia
| | - H Herbert
- Children's Hearing Implant Program, Ear Nose and Throat Department, Perth Children's Hospital, Western Australia, Australia
| | - J Kuthubutheen
- Children's Hearing Implant Program, Ear Nose and Throat Department, Perth Children's Hospital, Western Australia, Australia; Division of Surgery, University of Western Australia, Western Australia, Australia
| | - F Mascaro
- Immunisation Service, Department of Infectious Diseases, Perth Children's Hospital, Western Australia, Australia
| | - A O'Mahoney
- Immunisation Service, Department of Infectious Diseases, Perth Children's Hospital, Western Australia, Australia
| | - S Rodrigues
- Children's Hearing Implant Program, Ear Nose and Throat Department, Perth Children's Hospital, Western Australia, Australia
| | - T Tran
- Children's Hearing Implant Program, Ear Nose and Throat Department, Perth Children's Hospital, Western Australia, Australia
| | - A J Campbell
- Immunisation Service, Department of Infectious Diseases, Perth Children's Hospital, Western Australia, Australia; Wesfarmers Centre for Vaccines and Infectious Diseases, Telethon Kids Institute, University of Western Australia, Western Australia, Australia
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Vu A, Ngo V, Bui T, Tran T. POS-013 THROMBOTIC MICROANGIOPATHY AFTER COVID-19: LACK OF EVIDENCE OF COMPLEMENT ACTIVATION? A CASE REPORT. Kidney Int Rep 2022. [PMCID: PMC9213007 DOI: 10.1016/j.ekir.2022.04.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Tran T, Huang R, Shen C. P-98 Diabetes promotes the progression of pancreatic ductal adenocarcinoma via the interaction between transforming acinar cells and cancer cells through AKT/CEBPβ/LCN2 pathway. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.04.188] [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: 11/16/2022] Open
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Harms HJ, Bravo PE, Bajaj NS, Zhou W, Gupta A, Tran T, Taqueti VR, Hainer J, Bibbo C, Dorbala S, Blankstein R, Mehra M, Sörensen J, Givertz MM, Di Carli MF. Cardiopulmonary transit time: A novel PET imaging biomarker of in vivo physiology for risk stratification of heart transplant recipients. J Nucl Cardiol 2022; 29:1234-1244. [PMID: 33398793 PMCID: PMC8254830 DOI: 10.1007/s12350-020-02465-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Accepted: 10/12/2020] [Indexed: 01/05/2023]
Abstract
BACKGROUND Myocardial blood flow (MBF) can be quantified using dynamic PET studies. These studies also inherently contain tomographic images of early bolus displacement, which can provide cardiopulmonary transit times (CPTT) as measure of cardiopulmonary physiology. The aim of this study was to assess the incremental prognostic value of CPTT in heart transplant (OHT) recipients. METHODS 94 patients (age 56 ± 16 years, 78% male) undergoing dynamic 13N-ammonia stress/rest studies were included, of which 68 underwent right-heart catherization. A recently validated cardiac allograft vasculopathy (CAV) score based on PET measures of regional perfusion, peak MBF and left-ventricular (LV) ejection fraction (LVEF) was used to identify patients with no, mild or moderate-severe CAV. Time-activity curves of the LV and right ventricular (RV) cavities were obtained and used to calculate the difference between the LV and RV bolus midpoint times, which represents the CPTT and is expressed in heartbeats. Patients were followed for a median of 2.5 years for the occurrence of major adverse cardiac events (MACE), including cardiovascular death, hospitalization for heart failure or acute coronary syndrome, or re-transplantation. RESULTS CPTT was significantly correlated with cardiac filling pressures (r = .434, P = .0002 and r = .439, P = .0002 for right atrial and pulmonary wedge pressure), cardiac output (r = - .315, P = .01) and LVEF (r = - .513, P < .0001). CPTT was prolonged in patients with MACE (19.4 ± 6.0 vs 14.5 ± 3.0 heartbeats, P < .001, N = 15) with CPTT ≥ 17.75 beats showing optimal discriminatory value in ROC analysis. CPTT ≥ 17.75 heartbeats was associated with a 10.1-fold increased risk (P < .001) of MACE and a 7.3-fold increased risk (P < .001) after adjusting for PET-CAV, age, sex and time since transplant. CONCLUSION Measurements of cardiopulmonary transit time provide incremental risk stratification in OHT recipients and enhance the value of multiparametric dynamic PET imaging, particularly in identifying high-risk patients.
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Affiliation(s)
- H J Harms
- Cardiovascular Imaging Program, Departments of Radiology and Medicine; Division of Nuclear Medicine and Molecular Imaging, Brigham and Women's Hospital, and Harvard Medical School, 75 Francis Street, Boston, MA, USA
- Institute of Clinical Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - P E Bravo
- Division of Cardiovascular Medicine, Department of Medicine; and Division of Nuclear Medicine, Department of Radiology, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - N S Bajaj
- Cardiovascular Imaging Program, Departments of Radiology and Medicine; Division of Nuclear Medicine and Molecular Imaging, Brigham and Women's Hospital, and Harvard Medical School, 75 Francis Street, Boston, MA, USA
| | - W Zhou
- Cardiovascular Imaging Program, Departments of Radiology and Medicine; Division of Nuclear Medicine and Molecular Imaging, Brigham and Women's Hospital, and Harvard Medical School, 75 Francis Street, Boston, MA, USA
| | - A Gupta
- Cardiovascular Imaging Program, Departments of Radiology and Medicine; Division of Nuclear Medicine and Molecular Imaging, Brigham and Women's Hospital, and Harvard Medical School, 75 Francis Street, Boston, MA, USA
| | - T Tran
- Cardiovascular Imaging Program, Departments of Radiology and Medicine; Division of Nuclear Medicine and Molecular Imaging, Brigham and Women's Hospital, and Harvard Medical School, 75 Francis Street, Boston, MA, USA
| | - V R Taqueti
- Cardiovascular Imaging Program, Departments of Radiology and Medicine; Division of Nuclear Medicine and Molecular Imaging, Brigham and Women's Hospital, and Harvard Medical School, 75 Francis Street, Boston, MA, USA
| | - J Hainer
- Cardiovascular Imaging Program, Departments of Radiology and Medicine; Division of Nuclear Medicine and Molecular Imaging, Brigham and Women's Hospital, and Harvard Medical School, 75 Francis Street, Boston, MA, USA
| | - C Bibbo
- Cardiovascular Imaging Program, Departments of Radiology and Medicine; Division of Nuclear Medicine and Molecular Imaging, Brigham and Women's Hospital, and Harvard Medical School, 75 Francis Street, Boston, MA, USA
| | - S Dorbala
- Cardiovascular Imaging Program, Departments of Radiology and Medicine; Division of Nuclear Medicine and Molecular Imaging, Brigham and Women's Hospital, and Harvard Medical School, 75 Francis Street, Boston, MA, USA
| | - R Blankstein
- Cardiovascular Imaging Program, Departments of Radiology and Medicine; Division of Nuclear Medicine and Molecular Imaging, Brigham and Women's Hospital, and Harvard Medical School, 75 Francis Street, Boston, MA, USA
| | - M Mehra
- Cardiovascular Imaging Program, Departments of Radiology and Medicine; Division of Nuclear Medicine and Molecular Imaging, Brigham and Women's Hospital, and Harvard Medical School, 75 Francis Street, Boston, MA, USA
| | - J Sörensen
- Institute of Clinical Medicine, Aarhus University Hospital, Aarhus, Denmark
- Department of Surgical Sciences, Nuclear Medicine and PET, Uppsala University, Uppsala, Sweden
| | - M M Givertz
- Cardiovascular Imaging Program, Departments of Radiology and Medicine; Division of Nuclear Medicine and Molecular Imaging, Brigham and Women's Hospital, and Harvard Medical School, 75 Francis Street, Boston, MA, USA
| | - M F Di Carli
- Cardiovascular Imaging Program, Departments of Radiology and Medicine; Division of Nuclear Medicine and Molecular Imaging, Brigham and Women's Hospital, and Harvard Medical School, 75 Francis Street, Boston, MA, USA.
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Tran T, Billet K, Torres-Cobos B, Vichi S, Verdier F, Martin A, Alexandre H, Grandvalet C, Tourdot-Maréchal R. Use of a Minimal Microbial Consortium to Determine the Origin of Kombucha Flavor. Front Microbiol 2022; 13:836617. [PMID: 35387069 PMCID: PMC8978889 DOI: 10.3389/fmicb.2022.836617] [Citation(s) in RCA: 3] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 01/27/2022] [Indexed: 11/16/2022] Open
Abstract
Microbiological, chemical, and sensory analyses were coupled to understand the origins of kombucha organoleptic compounds and their implication in the flavor of the kombucha beverage. By isolating microorganisms from an original kombucha and comparing it to monocultures and cocultures of two yeasts (Brettanomyces bruxellensis and Hanseniaspora valbyensis) and an acetic acid bacterium (Acetobacter indonesiensis), interaction effects were investigated during the two phases of production. 32 volatile compounds identified and quantified by Headspace-Solid Phase-MicroExtraction-Gas Chromatography/Mass Spectrometry (HS-SPME-GC/MS) were classified according to their origin from tea or microorganisms. Many esters were associated to H. valbyensis, while alcohols were associated to both yeasts, acetic acid to A. indonesiensis, and saturated fatty acids to all microorganisms. Concentration of metabolites were dependent on microbial activity, yeast composition, and phase of production. Sensory analysis showed that tea type influenced the olfactive perception, although microbial composition remained the strongest factor. Association of B. bruxellensis and A. indonesiensis induced characteristic apple juice aroma.
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Affiliation(s)
- Thierry Tran
- UMR Procédés Alimentaires et Microbiologiques, Institut Agro Dijon, Equipe Vin Alimentation Micro-Organismes Stress (VAlMiS), Université de Bourgogne Franche-Comté, Dijon, France
| | - Kevin Billet
- UMR Procédés Alimentaires et Microbiologiques, Institut Agro Dijon, Equipe Vin Alimentation Micro-Organismes Stress (VAlMiS), Université de Bourgogne Franche-Comté, Dijon, France
| | - Berta Torres-Cobos
- Departament de Nutrició, Ciències de l'Alimentació i Gastronomia, Institut de Recerca en Nutrició i Seguretat Alimentària (INSA), Universitat de Barcelona, Barcelona, Spain
| | - Stefania Vichi
- Departament de Nutrició, Ciències de l'Alimentació i Gastronomia, Institut de Recerca en Nutrició i Seguretat Alimentària (INSA), Universitat de Barcelona, Barcelona, Spain
| | | | | | - Hervé Alexandre
- UMR Procédés Alimentaires et Microbiologiques, Institut Agro Dijon, Equipe Vin Alimentation Micro-Organismes Stress (VAlMiS), Université de Bourgogne Franche-Comté, Dijon, France
| | - Cosette Grandvalet
- UMR Procédés Alimentaires et Microbiologiques, Institut Agro Dijon, Equipe Vin Alimentation Micro-Organismes Stress (VAlMiS), Université de Bourgogne Franche-Comté, Dijon, France
| | - Raphaëlle Tourdot-Maréchal
- UMR Procédés Alimentaires et Microbiologiques, Institut Agro Dijon, Equipe Vin Alimentation Micro-Organismes Stress (VAlMiS), Université de Bourgogne Franche-Comté, Dijon, France
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Reich J, Tran T, Kashem M, Kehara H, Sunagawa G, Leotta E, Yanagida R, Mangukia C, Shigemura N, Toyoda Y. Lung Transplantation in the Elderly: How Old is Too Old? J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.01.657] [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: 11/16/2022] Open
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Tran T, Reich J, Kashem M, Kehara H, Leotta E, Yanagida R, Mangukia C, Shigemura N, Toyoda Y. Prior and Perioperative Revascularization Impact on Survival in Lung Transplant Patients. J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.01.659] [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: 10/18/2022] Open
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Tran T, Roullier-Gall C, Verdier F, Martin A, Schmitt-Kopplin P, Alexandre H, Grandvalet C, Tourdot-Maréchal R. Microbial Interactions in Kombucha through the Lens of Metabolomics. Metabolites 2022; 12:metabo12030235. [PMID: 35323678 PMCID: PMC8954749 DOI: 10.3390/metabo12030235] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 02/09/2022] [Accepted: 03/08/2022] [Indexed: 02/05/2023] Open
Abstract
Kombucha is a fermented beverage obtained through the activity of a complex microbial community of yeasts and bacteria. Exo-metabolomes of kombucha microorganisms were analyzed using FT-ICR-MS to investigate their interactions. A simplified set of microorganisms including two yeasts (Brettanomyces bruxellensis and Hanseniaspora valbyensis) and one acetic acid bacterium (Acetobacter indonesiensis) was used to investigate yeast–yeast and yeast–acetic acid bacterium interactions. A yeast–yeast interaction was characterized by the release and consumption of fatty acids and peptides, possibly in relationship to commensalism. A yeast–acetic acid bacterium interaction was different depending on yeast species. With B. bruxellensis, fatty acids and peptides were mainly produced along with consumption of sucrose, fatty acids and polysaccharides. In opposition, the presence of H. valbyensis induced mainly the decrease of polyphenols, peptides, fatty acids, phenolic acids and putative isopropyl malate and phenylpyruvate and few formulae have been produced. With all three microorganisms, the formulae involved with the yeast–yeast interactions were consumed or not produced in the presence of A. indonesiensis. The impact of the yeasts’ presence on A. indonesiensis was consistent regardless of the yeast species with a commensal consumption of compounds associated to the acetic acid bacterium by yeasts. In detail, hydroxystearate from yeasts and dehydroquinate from A. indonesiensis were potentially consumed in all cases of yeast(s)–acetic acid bacterium pairing, highlighting mutualistic behavior.
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Affiliation(s)
- Thierry Tran
- UMR Procédés Alimentaires et Microbiologiques, Institut Agro Dijon, Université de Bourgogne Franche-Comté, 21000 Dijon, France; (C.R.-G.); (H.A.); (C.G.); (R.T.-M.)
- Correspondence:
| | - Chloé Roullier-Gall
- UMR Procédés Alimentaires et Microbiologiques, Institut Agro Dijon, Université de Bourgogne Franche-Comté, 21000 Dijon, France; (C.R.-G.); (H.A.); (C.G.); (R.T.-M.)
| | | | - Antoine Martin
- Biomère, 14 rue Audubon, 75120 Paris, France; (F.V.); (A.M.)
| | - Philippe Schmitt-Kopplin
- Comprehensive Foodomics Platform, Technische Universität München, 85354 Freising, Germany;
- Research Unit Analytical BioGeoChemistry, Department of Environmental Sciences, Helmholtz Zentrum München, 85764 Neuherberg, Germany
| | - Hervé Alexandre
- UMR Procédés Alimentaires et Microbiologiques, Institut Agro Dijon, Université de Bourgogne Franche-Comté, 21000 Dijon, France; (C.R.-G.); (H.A.); (C.G.); (R.T.-M.)
| | - Cosette Grandvalet
- UMR Procédés Alimentaires et Microbiologiques, Institut Agro Dijon, Université de Bourgogne Franche-Comté, 21000 Dijon, France; (C.R.-G.); (H.A.); (C.G.); (R.T.-M.)
| | - Raphaëlle Tourdot-Maréchal
- UMR Procédés Alimentaires et Microbiologiques, Institut Agro Dijon, Université de Bourgogne Franche-Comté, 21000 Dijon, France; (C.R.-G.); (H.A.); (C.G.); (R.T.-M.)
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Mas P, Tran T, Verdier F, Martin A, Alexandre H, Grandvalet C, Tourdot-Maréchal R. Evolution in Composition of Kombucha Consortia over Three Consecutive Years in Production Context. Foods 2022; 11:foods11040614. [PMID: 35206089 PMCID: PMC8871122 DOI: 10.3390/foods11040614] [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: 01/12/2022] [Revised: 02/14/2022] [Accepted: 02/16/2022] [Indexed: 01/11/2023] Open
Abstract
Kombucha is a traditional drink obtained from sugared tea that is transformed by a community of yeasts and bacteria. Its production has become industrialized, and the study of the microbial community's evolution is needed to improve control over the process. This study followed the microbial composition of black and green kombucha tea over three consecutive years in a production facility using a culture-dependent method. Microorganisms were isolated and cultivated using selective agar media. The DNA of isolates was extracted, amplified using 26S and 16S PCR, and sequenced. Identities were obtained after a comparison to the NCBI database. Dekkera/Brettanomyces bruxellensis, Hanseniaspora valbyensis and Saccharomyces cerevisiae were the major yeast species, and the major bacterial genera were Acetobacter and Liquorilactobacillus. Results highlight the persistence of yeast species such as B. bruxellensis detected in 2019. Some yeasts species appeared to be sensitive towards stressful events, such as a hot period in 2019. However, they were resilient and isolated again in 2021, as was the case for H. valbyensis. Dominance of B. bruxellensis was clear in green and black tea kombucha, but proportions in yeasts varied depending on tea type and phase (liquid or biofilm). Composition in acetic acid and lactic acid bacteria showed a higher variability than yeasts with many changes in species over time.
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Affiliation(s)
- Perrine Mas
- UMR Procédés Alimentaires et Microbiologiques, Institut Agro Dijon, Université de Bourgogne Franche-Comté, Équipe Vin Alimentation Micro-organismes Stress (VAlMiS), 21000 Dijon, France; (P.M.); (H.A.); (C.G.); (R.T.-M.)
| | - Thierry Tran
- UMR Procédés Alimentaires et Microbiologiques, Institut Agro Dijon, Université de Bourgogne Franche-Comté, Équipe Vin Alimentation Micro-organismes Stress (VAlMiS), 21000 Dijon, France; (P.M.); (H.A.); (C.G.); (R.T.-M.)
- Correspondence:
| | | | - Antoine Martin
- Biomère, 14 rue Audubon, 75120 Paris, France; (F.V.); (A.M.)
| | - Hervé Alexandre
- UMR Procédés Alimentaires et Microbiologiques, Institut Agro Dijon, Université de Bourgogne Franche-Comté, Équipe Vin Alimentation Micro-organismes Stress (VAlMiS), 21000 Dijon, France; (P.M.); (H.A.); (C.G.); (R.T.-M.)
| | - Cosette Grandvalet
- UMR Procédés Alimentaires et Microbiologiques, Institut Agro Dijon, Université de Bourgogne Franche-Comté, Équipe Vin Alimentation Micro-organismes Stress (VAlMiS), 21000 Dijon, France; (P.M.); (H.A.); (C.G.); (R.T.-M.)
| | - Raphaëlle Tourdot-Maréchal
- UMR Procédés Alimentaires et Microbiologiques, Institut Agro Dijon, Université de Bourgogne Franche-Comté, Équipe Vin Alimentation Micro-organismes Stress (VAlMiS), 21000 Dijon, France; (P.M.); (H.A.); (C.G.); (R.T.-M.)
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Ojide MG, Adegbite S, Tran T, Taborda LA, Chapuis A, Lukombo S, Totin E, Sartas M, Schut M, Becerra Lopez-Lavalle LA, Dufour D, Abass A. Processors' Experience in the Use of Flash Dryer for Cassava-derived Products in Nigeria. Front Sustain Food Syst 2022. [DOI: 10.3389/fsufs.2021.771639] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
This study was designed and carried out to ascertain the situation and perceptions of end users of cassava flash drying equipment in Nigeria with the aim of giving suggestions to policies and approaches for improved technology. Forty-one processing firms were selected and interviewed. Descriptive analyses were used and a logistic regression model was estimated. The results revealed that 49% of the firms stopped using their flash dryers due to the low demand for high-quality cassava flour (HQCF) resulting from the high cost of processing occasioned by an inefficient heat-generating component. The estimated model provides evidence that cost effectiveness (p < 0.05) and energy cost (p < 0.10) are the two major determinants of the continuous usage of flash dryers in the study area. Forty-one percent of the firms indicated willingness to pay for any technical adjustment of their flash dryers, supposing such adjustment would improve on drying and the energy efficiency of the equipment up to 40%. The study recommends that machine fabricators in Nigeria and other African countries should be trained on the production of energy- and cost-efficient small-scale flash dryers. Again, the design and commercialization of flash dryers that can be mounted on mobile trucks for farm-gate processing should be encouraged to facilitate farm-gate processing, thereby reducing postharvest losses resulting from transporting perishable and bulky roots over a long distance.
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Segarra-Martí J, Tran T, Bearpark M. 3-methylation alters excited state decay in photoionised uracil. Phys Chem Chem Phys 2022; 24:27038-27046. [DOI: 10.1039/d2cp03460c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
UV and VUV-induced processes in DNA/RNA nucleobases are central to understand photo-damaging and photo-protecting mechanisms in our genetic material. Here we model the events following photoionisation and electronic excitation in...
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Soosapilla K, Akrawi D, Tran T, Huang J, Premawardhana U, Kadappu K. The Novel Use of Salbutamol and Hyoscine in Managing Third-Degree Atrioventricular Block. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.200] [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: 11/26/2022]
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Ojukwu K, Miranda-Taylor M, Tran T, Ji P. Knowledge is Power: Pathology Activity Booths in Community Health Fairs. Am J Clin Pathol 2021. [DOI: 10.1093/ajcp/aqab191.228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction/Objective
Our pilot project “Pathology Activity Booths” is an innovative approach to investigating whether pathology activity exhibits at health fairs could increase access and promote learning and understanding of health topics and pathology of diseases. Health fairs are an effective form of community-based health promotion conducted in many underserved communities.
Methods/Case Report
Booth #1 (Colorectal Cancer Awareness Fair): Microscopes with histology slides of colon biopsies, with enlarged corresponding colonoscopy images, were displayed showing the histology of normal colon, abnormal colon and cancer (colon adenocarcinoma).
Booth #2 (Children’s Back-To-School Fair): Microscopes with histology slides of normal skin, lung, kidney, liver, intestine, and brain tissue were shown.
Post participation surveys assessed whether participants knew anyone with the diseases presented, had previous experience with microscopes, and/or felt they understood and learned from their experience at the booth.
Results (if a Case Study enter NA)
There were 71 total participants. At Booth #1, 100% (42/42) of participants stated they understood what they saw under the microscope and 95% (40/42) felt they learned something new. At Booth #2, 86% (25/29) of participants stated they understood what they saw under the microscope and 76% (22/29) stated they learned something new. One participant exclaimed she would now make her husband get the colonoscopy he had been avoiding.
Conclusion
The overwhelmingly positive responses indicate that pathology booths could be promising in promoting health knowledge in our patient population. Greater understanding of health topics may lead to increased use of screening tests that can ultimately improve health outcomes. Pathologists are well suited to be direct resources of accurate information for patients. As physicians who closely evaluate human disease, we can effectively provide access to a new, different and engaging perspective to community health education. Pathology activity booths may be a valuable resource for patients, an innovative method of teaching the community and a creative tool to enhance trainees’ experience and teaching ability.
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Affiliation(s)
- K Ojukwu
- Pathology, Harbor-UCLA Medical Center, Torrance, California, UNITED STATES
| | - M Miranda-Taylor
- Pathology, Harbor-UCLA Medical Center, Torrance, California, UNITED STATES
| | - T Tran
- Pathology, Harbor-UCLA Medical Center, Torrance, California, UNITED STATES
| | - P Ji
- Pathology, Harbor-UCLA Medical Center, Torrance, California, UNITED STATES
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Chiu R, Tran T, Miranda-Taylor M, Bamdad S, Jia Y, Crabtree M, Cornford M, Yap C, Peng S. Biphasic Sarcomatoid Sweat Gland Carcinoma With Ductal Epithelial And Spindled Myoepithelial Cell Components (Malignant Mixed Tumor Of Skin). Am J Clin Pathol 2021. [DOI: 10.1093/ajcp/aqab191.093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction/Objective
Sweat gland carcinomas are a group of malignant skin adnexal tumors that are difficult to diagnose due to their rarity, wide morphologic variation, and limited literature on diagnosis and classification. These tumors may appear bland and morphologically resemble benign skin adnexal tumors, or may appear poorly differentiated and mimic metastatic carcinoma especially from a breast primary. Biphasic sweat gland carcinomas are an even rarer entity, with only few cases reported in literature, and have been described to consist of a well- differentiated ductal epithelial component and a poorly differentiated, sarcomatoid, spindle cell component.
Methods/Case Report
Our case report describes a 53 year old female referred to our institution for diagnosis of an excised skin lesion of the right upper arm, which had been slowly growing for 8 years. The histology revealed a biphasic malignant neoplasm involving the dermis and subcutis. The tumor consisted of an epithelial cell component with glandular and squamoid morphology and positive for CK5/6, CK7, and CAM5.2, and a spindled myoepithelial cell component with sarcomatoid morphology and positive for S100, vimentin, and p63. Stains for CK20, ER, PR, PAX8, CEA, and TTF1 were negative. The histological and clinical findings favored a primary skin adnexal tumor, rather than a metastatic lesion.
The patient underwent wide local excision of the lesion given that margins of the original excision were indeterminate. The histology of this re-excision demonstrated the same biphasic tumor with ductal epithelial and sarcomatoid myoepithelial cell components positive for the same stains. Although margins were negative in this re-excision, 3-4 months later, the patient developed dyspnea with multiple new pulmonary and hilar masses discovered on imaging, and new-onset headache with a frontal lobe mass discovered on brain imaging. These masses were biopsied/resected, and revealed to be metastases of the original cutaneous tumor positive for the same markers.
Results (if a Case Study enter NA)
NA
Conclusion
This case report describes a rare, diagnostically challenging case of a biphasic sweat gland carcinoma with ductal epithelial and sarcomatoid myoepithelial cell components, which demonstrated aggressive behavior with distant metastasis. These tumors are a clinicopathological quandary given their rarity and the paucity of literature on their characterization.
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Affiliation(s)
- R Chiu
- Pathology, Harbor-UCLA Medical Center, Torrance, California, UNITED STATES
| | - T Tran
- Pathology, Harbor-UCLA Medical Center, Torrance, California, UNITED STATES
| | - M Miranda-Taylor
- Pathology, Harbor-UCLA Medical Center, Torrance, California, UNITED STATES
| | - S Bamdad
- Pathology, Harbor-UCLA Medical Center, Torrance, California, UNITED STATES
| | - Y Jia
- Pathology, Harbor-UCLA Medical Center, Torrance, California, UNITED STATES
| | - M Crabtree
- Pathology, Harbor-UCLA Medical Center, Torrance, California, UNITED STATES
| | - M Cornford
- Pathology, Harbor-UCLA Medical Center, Torrance, California, UNITED STATES
| | - C Yap
- Pathology, Harbor-UCLA Medical Center, Torrance, California, UNITED STATES
| | - S Peng
- Pathology, Harbor-UCLA Medical Center, Torrance, California, UNITED STATES
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Christopoulou G, Tran T, Worth GA. Direct nonadiabatic quantum dynamics simulations of the photodissociation of phenol. Phys Chem Chem Phys 2021; 23:23684-23695. [PMID: 34642723 DOI: 10.1039/d1cp01843d] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Gaussian wavepacket methods are becoming popular for the investigation of nonadiabatic molecular dynamics. In the present work, a recently developed efficient algorithm for the Direct Dynamics variational Multi-Configurational Gaussian (DD-vMCG) method has been used to describe the multidimensional photodissociation dynamics of phenol including all degrees of freedom. Full-dimensional quantum dynamic calculations including for the first time six electronic states (1ππ, 11ππ*, 11πσ*, 21πσ*, 21ππ*, 31ππ*), along with a comparison to an existing analytical 4-state model for the potential energy surfaces are presented. Including the fifth singlet excited state is shown to have a significant effect on the nonadiabatic photodissociation of phenol to the phenoxyl radical and hydrogen atom. State population and flux analysis from the DD-vMCG simulations of phenol provided further insights into the decay mechanism, confirming the idea of rapid relaxation to the ground state through the 1ππ/11πσ* conical intersection.
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Affiliation(s)
| | - Thierry Tran
- Department of Chemistry, University College London, London WC1H 0AJ, UK.,Department of Chemistry, Imperial College London, Imperial College London, White City Campus, W12 0BZ London, UK.
| | - Graham A Worth
- Department of Chemistry, University College London, London WC1H 0AJ, UK
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Si L, Eisman JA, Winzenberg T, Sanders KM, Center JR, Nguyen TV, Tran T, Palmer AJ. Development and validation of the risk engine for an Australian Health Economics Model of Osteoporosis. Osteoporos Int 2021; 32:2073-2081. [PMID: 33856500 DOI: 10.1007/s00198-021-05955-x] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Accepted: 04/07/2021] [Indexed: 10/21/2022]
Abstract
UNLABELLED The Australian Health Economics Model of Osteoporosis (AusHEMO) has shown good face, internal and cross validities, and can be used to assist healthcare decision-making in Australia. PURPOSE This study aimed to document and validate the risk engine of the Australian Health Economics Model of Osteoporosis (AusHEMO). METHODS AusHEMO is a state-transition microsimulation model. The fracture risks were simulated using fracture incidence rates from the Dubbo Osteoporosis Epidemiology Study. The AusHEMO was validated regarding its face, internal and cross validities. Goodness-of-fit analysis was conducted and Lin's coefficient of agreement and mean absolute difference with 95% limits of agreement were reported. RESULTS The development of AusHEMO followed general and osteoporosis-specific health economics guidelines. AusHEMO showed good face validity regarding the model's structure, evidence, problem formulation and results. In addition, the model has been proven good internal and cross validities in goodness-of-fit test. Lin's coefficient was 0.99, 1 and 0.94 for validation against the fracture incidence rates, Australian life expectancies and residual lifetime fracture risks, respectively. CONCLUSIONS In summary, the development of the risk engine of AusHEMO followed the best practice for osteoporosis disease modelling and the model has been shown to have good face, internal and cross validities. The AusHEMO can be confidently used to predict long-term fracture-related outcomes and health economic evaluations when costs data are included. Health policy-makers in Australia can use the AusHEMO to select which osteoporosis interventions such as medications and public health interventions represent good value for money.
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Affiliation(s)
- L Si
- The George Institute for Global Health, UNSW Sydney, Kensington, Australia.
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Australia.
- School of Health Policy & Management, Nanjing Medical University, Nanjing, China.
| | - J A Eisman
- Bone Biology Division, Garvan Institute of Medical Research, Sydney, Australia
- School of Medicine Sydney, University of Notre Dame Australia, Sydney, Australia
- St Vincent's Hospital, UNSW Sydney, Sydney, New South Wales, Australia
| | - T Winzenberg
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Australia
| | - K M Sanders
- Department of Medicine-Western Health, Melbourne Medical School, The University of Melbourne, Melbourne, VIC, Australia
- School of Health and Social Development, Deakin University, Geelong, Victoria, Australia
| | - J R Center
- Bone Biology Division, Garvan Institute of Medical Research, Sydney, Australia
- St Vincent's Hospital, UNSW Sydney, Sydney, New South Wales, Australia
| | - T V Nguyen
- Bone Biology Division, Garvan Institute of Medical Research, Sydney, Australia
- St Vincent's Hospital, UNSW Sydney, Sydney, New South Wales, Australia
- School of Biomedical Engineering, University of Technology Sydney, Sydney, Australia
| | - T Tran
- Bone Biology Division, Garvan Institute of Medical Research, Sydney, Australia
| | - A J Palmer
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Australia.
- Centre for Health Policy, School of Population and Global Health, The University of Melbourne, Melbourne, Victoria, Australia.
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Tran H, Nguyen S, Nguyen K, Pham D, Le A, Nguyen G, Tran D, Shu X, Osarogiagbon R, Tran T. OA18.01 Lung Cancer in Vietnam. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.08.094] [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: 10/20/2022]
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Dou G, Wang X, Zhao B, Yuan X, Pan C, Tran T, Zellweger H, Zhu K, Guo Y, Wu H, Yin J, Bai Y. The transformation and outcome of traditional cassava starch processing in Guangxi, China. Environ Technol 2021; 42:3278-3287. [PMID: 32008477 DOI: 10.1080/09593330.2020.1725647] [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: 09/20/2019] [Accepted: 01/04/2020] [Indexed: 06/10/2023]
Abstract
To improve the resource utilization, reduce the pollution generation, and increase the economic benefits of enterprises, a cleaner process to produce cassava starch was proposed based on potato starch processing, and it was applied to the transformation of a traditional cassava starch processing factory in the Guangxi Province in China. The transformation involves the implementation of several new techniques/facilities, including a rasper, horizontal centrifuge, and hydrocyclone. Based on the transformation, typical cassava starch factories in Guangxi were evaluated. The results show that, through the application of a series of cleaner techniques/facilities, the starch recovery rate increased to 84.5%. The water consumption, wastewater generation, and chemical oxygen demand generation decreased by 53.8%, 49.0%, and 20.7%, respectively. Based on the cleaner process, the wastewater can be treated to meet the national discharge standard by using common wastewater treatment technology.
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Affiliation(s)
- Guangyu Dou
- Chinese Research Academy of Environmental Sciences, Beijing, People's Republic of China
| | - Xueting Wang
- Chinese Research Academy of Environmental Sciences, Beijing, People's Republic of China
| | - Bochao Zhao
- Chinese Research Academy of Environmental Sciences, Beijing, People's Republic of China
| | - Xinan Yuan
- Chinese Research Academy of Environmental Sciences, Beijing, People's Republic of China
| | - Cenxuan Pan
- Chinese Research Academy of Environmental Sciences, Beijing, People's Republic of China
| | - Thierry Tran
- UMR QUALISUD, University of Montpellier, CIRAD, Montpellier, France
- CIAT, CGIAR Research Program on Roots Tubers and Bananas, Cali, Colombia
| | | | - Kesong Zhu
- Chinese Research Academy of Environmental Sciences, Beijing, People's Republic of China
| | - Yajing Guo
- Chinese Research Academy of Environmental Sciences, Beijing, People's Republic of China
| | - Hao Wu
- Chinese Research Academy of Environmental Sciences, Beijing, People's Republic of China
| | - Jie Yin
- Chinese Research Academy of Environmental Sciences, Beijing, People's Republic of China
| | - Yanying Bai
- Chinese Research Academy of Environmental Sciences, Beijing, People's Republic of China
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Tran T, Grandvalet C, Winckler P, Verdier F, Martin A, Alexandre H, Tourdot-Maréchal R. Shedding Light on the Formation and Structure of Kombucha Biofilm Using Two-Photon Fluorescence Microscopy. Front Microbiol 2021; 12:725379. [PMID: 34421883 PMCID: PMC8371556 DOI: 10.3389/fmicb.2021.725379] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 06/15/2021] [Accepted: 07/12/2021] [Indexed: 11/13/2022] Open
Abstract
Kombucha pellicles are often used as inoculum to produce this beverage and have become a signature feature. This cellulosic biofilm produced by acetic acid bacteria (AAB) involves yeasts, which are also part of the kombucha consortia. The role of microbial interactions in the de novo formation and structure of kombucha pellicles was investigated during the 3 days following inoculation, using two-photon microscopy coupled with fluorescent staining. Aggregated yeast cells appear to serve as scaffolding to which bacterial cellulose accumulates. This initial foundation leads to a layered structure characterized by a top cellulose-rich layer and a biomass-rich sublayer. This sublayer is expected to be the microbiologically active site for cellulose production and spatial optimization of yeast–AAB metabolic interactions. The pellicles then grow in thickness while expanding their layered organization. A comparison with pellicles grown from pure AAB cultures shows differences in consistency and structure that highlight the impact of yeasts on the structure and properties of kombucha pellicles.
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Affiliation(s)
- Thierry Tran
- UMR Procédés Alimentaires et Microbiologiques, AgroSup Dijon, Université de Bourgogne Franche-Comté, Dijon, France
| | - Cosette Grandvalet
- UMR Procédés Alimentaires et Microbiologiques, AgroSup Dijon, Université de Bourgogne Franche-Comté, Dijon, France
| | - Pascale Winckler
- UMR Procédés Alimentaires et Microbiologiques, AgroSup Dijon, Université de Bourgogne Franche-Comté, Dijon, France.,INRA, INSERM, Dimacell Imaging Facility, AgroSup Dijon, Université de Bourgogne Franche-Comté, Dijon, France
| | | | | | - Hervé Alexandre
- UMR Procédés Alimentaires et Microbiologiques, AgroSup Dijon, Université de Bourgogne Franche-Comté, Dijon, France
| | - Raphaëlle Tourdot-Maréchal
- UMR Procédés Alimentaires et Microbiologiques, AgroSup Dijon, Université de Bourgogne Franche-Comté, Dijon, France
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Wette M, Steinmeier T, Lin Y, Journy N, Tran T, Jackson A, Bolle S, Fresneau B, Lassen-Ramshad Y, Tram Henriksen L, Haustermans K, Brualla L, Bäumer C, Demoor-Goldschmidt C, Thariat J, Thierry-Chef I, Timmermann B. PO-1437 Endocrine Late- Effects after Childhood and Adolescent Cancer - The Pan-European Registry HARMONIC. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)07888-9] [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: 10/20/2022]
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Abstract
The primary event occurring during the E-to-Z photoisomerization reaction of retinal protonated Schiff base (rPSB) is single-to-double bond inversion. In this work we examine the nuclear dynamics that occurs when the initial excited state is a superposition of the S1 and S2 electronic excited states that might be created in a laser experiment. The nuclear dynamics is dominated by double bond inversion that is parallel to the derivative coupling vector of S1 and S2. Thus, the molecule behaves as if it were at a conical intersection even if the states are nondegenerate.
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Affiliation(s)
- Massimo Olivucci
- Chemistry Deparment, University of Siena, Via Aldo Moro n. 2, 53100 Siena, Italy
- Chemistry Department, Bowling Green State University, Overman Hall, Bowling Green, Ohio 43403, United States
| | - Thierry Tran
- Department of Chemistry, University College London, 20 Gordon Street, WC1H 0AJ London, United Kingdom
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College, London SW7 2AZ, United Kingdom
| | - Graham A Worth
- Department of Chemistry, University College London, 20 Gordon Street, WC1H 0AJ London, United Kingdom
| | - Michael A Robb
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College, London SW7 2AZ, United Kingdom
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Tran T, Worth GA, Robb MA. Control of nuclear dynamics in the benzene cation by electronic wavepacket composition. Commun Chem 2021; 4:48. [PMID: 36697520 PMCID: PMC9814899 DOI: 10.1038/s42004-021-00485-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Accepted: 03/05/2021] [Indexed: 01/28/2023] Open
Abstract
The study of coupled electron-nuclear dynamics driven by coherent superpositions of electronic states is now possible in attosecond science experiments. The objective is to understand the electronic control of chemical reactivity. In this work we report coherent 8-state non-adiabatic electron-nuclear dynamics simulations of the benzene radical cation. The computations were inspired by the extreme ultraviolet (XUV) experimental results in which all 8 electronic states were prepared with significant population. Our objective was to study the nuclear dynamics using various bespoke coherent electronic state superpositions as initial conditions in the Quantum-Ehrenfest method. The original XUV measurements were supported by Multi-configuration time-dependent Hartree (MCTDH) simulations, which suggested a model of successive passage through conical intersections. The present computations support a complementary model where non-adiabatic events are seen far from a conical intersection and are controlled by electron dynamics involving non-adjacent adiabatic states. It proves to be possible to identify two superpositions that can be linked with two possible fragmentation paths.
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Affiliation(s)
- Thierry Tran
- Department of Chemistry, University College London, London, UK. .,Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, London, UK.
| | - Graham A Worth
- Department of Chemistry, University College London, London, UK.
| | - Michael A Robb
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, London, UK.
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Mutyala S, Tran T, Kashem M, Zhao H, Shigemura N, Toyoda Y. Single Lung Transplantation in Patients under 50: Single Center and UNOS Analysis. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.1004] [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: 11/28/2022] Open
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49
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Montgomery K, Ander E, Tran T, Rakita V, Brann S, Toyoda Y, Hamad E. Survival Outcomes with Regards to Implant Strategies in Heart Transplantation. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.1211] [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: 10/21/2022] Open
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50
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Kashem M, Tran T, Suryapalam M, Rakita V, Hamad E, Minakata K, Toyoda Y. Impact of Ventricular Assist Devices on Cardiac Transplant Recipient Survival Outcomes. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.1196] [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: 11/17/2022] Open
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