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Oliveira-Fernandes J, Oliveira-Pinto PR, Mariz-Ponte N, Sousa RMOF, Santos C. Satureja montana and Mentha pulegium essential oils' antimicrobial properties against Pseudomonas syringae pv. actinidiae and elicitor potential through the modulation of kiwifruit hormonal defenses. Microbiol Res 2023; 277:127490. [PMID: 37722185 DOI: 10.1016/j.micres.2023.127490] [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: 05/29/2023] [Revised: 09/11/2023] [Accepted: 09/11/2023] [Indexed: 09/20/2023]
Abstract
Pseudomonas syringae pv. actinidiae (Psa) is responsible for the kiwifruit bacterial canker, the most severe disease of Actinidia spp. The use in agriculture of antibiotics and cooper-based compounds is increasingly being restricted, demanding for new sustainable alternatives to current agrochemicals. We aimed to characterize the anti-Psa potential of essential oils (EOs) of Mentha pulegium and Satureja montana and investigate if they elicit the plant-host hormonal defenses. The EOs were characterized through gas-chromatography with flame ionization detector (GC-FID) and mass spectrometry (MS). Pulegone (78.6%) and carvacrol (43.5%) were the major constituents of M. pulegium and S. montana EO, respectively. Only S. montana EO showed relevant anti-Psa activity in vitro. To evaluate if the EOs also elicited host defenses, in vitro shoots were treated with 2 mg shoot-1 of EO-solution and subsequently inoculated with Psa three days later. Shoots were analyzed 10 min, three days (and 10 min after Psa-inoculation), four and ten days after EO application. The up/down regulation of RNA-transcripts for hormone biosynthesis, Psa biofilm production and virulence genes were quantified by real-time quantitative PCR (RT-qPCR). Phytohormones were quantified by High-Performance Liquid Chromatography (HPLC). S. montana EO showed the most promising results as a defense elicitor, increasing 6-benzylaminopurine (BAP) by 131.07% and reducing indole-3-acetic acid (IAA) levels by 49.19%. Decreases of salicylic acid (SA), and gibberellic acid 3 (GA3) levels by 32.55% and 33.09% respectively and an increase of abscisic acid (ABA) by 85.03%, in M. pulegium EO-treated shoots, revealed some protective post-infection effect. This is the most comprehensive research on the Psa's impact on phytohormones. It also unveils the protective influence of prior EO exposure, clarifying the plant hormonal response to subsequent infections. The results reinforce the hypothesis that carvacrol-rich S. montana EO can be a suitable disease control agent against Psa infection. Its dual action against pathogens and elicitation of host plant defenses make it a promising candidate for incorporation into environmentally friendly disease management approaches. Nonetheless, to fully leverage these promising results, further research is imperative to elucidate the EO mode of action and evaluate the long-term efficacy of this approach.
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Affiliation(s)
- Juliana Oliveira-Fernandes
- Department of Biology, Faculty of Sciences, University of Porto, Rua Campo Alegre s/n, 4169- 007 Porto, Portugal; LAQV-REQUIMTE, Faculty of Sciences, University of Porto, Porto, Portugal
| | - Paulo R Oliveira-Pinto
- Department of Biology, Faculty of Sciences, University of Porto, Rua Campo Alegre s/n, 4169- 007 Porto, Portugal; LAQV-REQUIMTE, Faculty of Sciences, University of Porto, Porto, Portugal.
| | - Nuno Mariz-Ponte
- Department of Biology, Faculty of Sciences, University of Porto, Rua Campo Alegre s/n, 4169- 007 Porto, Portugal; LAQV-REQUIMTE, Faculty of Sciences, University of Porto, Porto, Portugal; CIBIO-InBIO, Campus de Vairão, Universidade do Porto, Rua Padre Armando Quintas, Vairão, Portugal
| | - Rose M O F Sousa
- Department of Biology, Faculty of Sciences, University of Porto, Rua Campo Alegre s/n, 4169- 007 Porto, Portugal; GreenUPorto/Inov4Agro, Faculty of Sciences, University of Porto, Rua Campo Alegre, Porto, Portugal; CITAB/Inov4Agro, Universidade de Trás-os-Montes e Alto Douro, Vila Real, Portugal
| | - Conceição Santos
- Department of Biology, Faculty of Sciences, University of Porto, Rua Campo Alegre s/n, 4169- 007 Porto, Portugal; LAQV-REQUIMTE, Faculty of Sciences, University of Porto, Porto, Portugal
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Ferreira de Oliveira JMP, Lenda LD, Proença C, Fernandes E, Bastos V, Santos C. Dataset of chicken-embryo blood cells exposed to quercetin, methyl methanesulfonate, or cadmium chloride. Data Brief 2023; 51:109673. [PMID: 37876742 PMCID: PMC10590833 DOI: 10.1016/j.dib.2023.109673] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 09/18/2023] [Accepted: 10/07/2023] [Indexed: 10/26/2023] Open
Abstract
Toxicological analysis of the effects of natural compounds is frequently mandated to assess their safety. In addition to more simple in vitro cellular systems, more complex biological systems can be used to evaluate toxicity. This dataset is comprised of bright-field microscopy images of chicken-embryo blood cells, a complex biological model that recapitulates several features found in human organisms, including circulation in blood stream and biodistribution to different organs. In the presented collection of blood smear images, cells were exposed to the flavonoid quercetin, and the two mutagens methyl methanesulfonate (MMS) and cadmium chloride (CdCl2). In ovo models offer a unique opportunity to investigate the effects of various substances, pathogens, or cancer treatments on developing embryos, providing valuable insights into potential risks and therapeutic strategies. In toxicology, in ovo models allow for early detection of harmful compounds and their impact on embryonic development, aiding in the assessment of environmental hazards. In immunology, these models offer a controlled system to explore the developing immune responses and the interaction between pathogens and host defenses. Additionally, in ovo models are instrumental in oncology research as they enable the study of tumor development and response to therapies in a dynamic, rapidly developing environment. Thus, these versatile models play a crucial role in advancing our understanding of complex biological processes and guiding the development of safer therapeutics and interventions. The data presented here can aid in understanding the potential toxic effects of these substances on hematopoiesis and the overall health of the developing organism. Moreover, the large dataset of blood smear images can serve as a resource for training machine learning algorithms to automatically detect and classify blood cells, provided that specific optimized conditions such as image magnification and background light are maintained for comparison. This can lead to the development of automated tools for blood cell analysis, which can be useful in research. Moreover, the data is amenable to the use as teaching and learning resource for histology and developmental biology.
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Affiliation(s)
| | - Lutete Daniel Lenda
- Department of Biology, Faculty of Sciences, University of Porto, Porto, Portugal
| | - Carina Proença
- LAQV, REQUIMTE, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | - Eduarda Fernandes
- LAQV, REQUIMTE, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | - Verónica Bastos
- CESAM—Centre for Environmental and Marine Studies, Department of Biology, University of Aveiro, Aveiro, 3810-193, Portugal
| | - Conceição Santos
- Department of Biology, Faculty of Sciences, University of Porto, Porto, Portugal
- LAQV, REQUIMTE, Department of Biology, Faculty of Sciences, University of Porto, Porto, Portugal
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Rebelo P, Teixeira A, Pinto R, Santos C, Brooks D, Marques A. Intensity of exercise in people with COPD enrolled in community-based physical activities. Pulmonology 2023:S2531-0437(23)00199-X. [PMID: 38008703 DOI: 10.1016/j.pulmoe.2023.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 09/25/2023] [Accepted: 11/02/2023] [Indexed: 11/28/2023] Open
Affiliation(s)
- P Rebelo
- Lab3R - Respiratory Research and Rehabilitation Laboratory, School of Health Sciences, University of Aveiro, Aveiro, Portugal; iBiMED - Institute of Biomedicine, Department of Medical Sciences, University of Aveiro, Aveiro, Portugal
| | - A Teixeira
- City council of Estarreja, Sports division, Estarreja, Portugal
| | - R Pinto
- City council of Estarreja, Sports division, Estarreja, Portugal
| | - C Santos
- City council of Estarreja, Sports division, Estarreja, Portugal
| | - D Brooks
- School of Rehabilitation Science, McMaster University, Hamilton, ON, Canada; West Park Healthcare Centre, Toronto, ON, Canada
| | - A Marques
- Lab3R - Respiratory Research and Rehabilitation Laboratory, School of Health Sciences, University of Aveiro, Aveiro, Portugal; iBiMED - Institute of Biomedicine, Department of Medical Sciences, University of Aveiro, Aveiro, Portugal.
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Pereira-Dias L, Oliveira-Pinto PR, Fernandes JO, Regalado L, Mendes R, Teixeira C, Mariz-Ponte N, Gomes P, Santos C. Peptaibiotics: Harnessing the potential of microbial secondary metabolites for mitigation of plant pathogens. Biotechnol Adv 2023; 68:108223. [PMID: 37536466 DOI: 10.1016/j.biotechadv.2023.108223] [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: 03/06/2023] [Revised: 07/28/2023] [Accepted: 07/31/2023] [Indexed: 08/05/2023]
Abstract
Agricultural systems are in need of low-cost, safe antibiotics to protect crops from pests and diseases. Peptaibiotics, a family of linear, membrane-active, amphipathic polypeptides, have been shown to exhibit antibacterial, antifungal, and antiviral activity, and to be inducers of plant resistance against a wide range of phytopathogens. Peptaibiotics belong to the new generation of alternatives to agrochemicals, aligned with the United Nations Sustainable Development Goals and the One Health approach toward ensuring global food security and safety. Despite that, these fungi-derived, non-ribosomal peptides remain surprisingly understudied, especially in agriculture, where only a small number has been tested against a reduced number of phytopathogens. This lack of adoption stems from peptaibiotics' poor water solubility and the difficulty to synthesize and purify them in vitro, which compromises their delivery and inclusion in formulations. In this review, we offer a comprehensive analysis of peptaibiotics' classification, biosynthesis, relevance to plant protection, and mode of action against phytopathogens, along with the techniques enabling researchers to extract, purify, and elucidate their structure, and the databases holding such valuable data. It is also discussed how chemical synthesis and ionic liquids could increase their solubility, how genetic engineering and epigenetics could boost in vitro production, and how omics can reduce screenings' workload through in silico selection of the best candidates. These strategies could turn peptaibiotics into effective, ultra-specific, biodegradable tools for phytopathogen control.
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Affiliation(s)
- Leandro Pereira-Dias
- iB(2) Laboratory, Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal; LAQV-REQUIMTE, Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal; Instituto de Conservación y Mejora de la Agrodiversidad Valenciana, Universitat Politècnica de València, 46022, Valencia, Spain.
| | - Paulo R Oliveira-Pinto
- iB(2) Laboratory, Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal; LAQV-REQUIMTE, Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal
| | - Juliana O Fernandes
- iB(2) Laboratory, Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal; LAQV-REQUIMTE, Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal
| | - Laura Regalado
- iB(2) Laboratory, Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal; LAQV-REQUIMTE, Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal
| | - Rafael Mendes
- iB(2) Laboratory, Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal; LAQV-REQUIMTE, Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal
| | - Cátia Teixeira
- LAQV-REQUIMTE, Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal; Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
| | - Nuno Mariz-Ponte
- iB(2) Laboratory, Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal; LAQV-REQUIMTE, Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal
| | - Paula Gomes
- LAQV-REQUIMTE, Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal; Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
| | - Conceição Santos
- iB(2) Laboratory, Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal; LAQV-REQUIMTE, Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal
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Gomes A, Narciso R, Regalado L, Pinheiro MC, Barros F, Sario S, Santos C, Mendes RJ. Disclosing the native blueberry rhizosphere community in Portugal-an integrated metagenomic and isolation approach. PeerJ 2023; 11:e15525. [PMID: 37397024 PMCID: PMC10312161 DOI: 10.7717/peerj.15525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 05/18/2023] [Indexed: 07/04/2023] Open
Abstract
Backgorund The production of red fruits, such as blueberry, has been threatened by several stressors from severe periods of drought, nutrient scarcity, phytopathogens, and costs with fertilization programs with adverse consequences. Thus, there is an urgent need to increase this crop's resilience whilst promoting sustainable agriculture. Plant growth-promoting microorganisms (PGPMs) constitute not only a solution to tackle water and nutrient deficits in soils, but also as a control against phytopathogens and as green compounds for agricultural practices. Methods In this study, a metagenomic approach of the local fungal and bacterial community of the rhizosphere of Vaccinium corymbosum plants was performed. At the same time, both epiphytic and endophytic microorganisms were isolated in order to disclose putative beneficial native organisms. Results Results showed a high relative abundance of Archaeorhizomyces and Serendipita genera in the ITS sequencing, and Bradyrhizobium genus in the 16S sequencing. Diversity analysis disclosed that the fungal community presented a higher inter-sample variability than the bacterial community, and beta-diversity analysis further corroborated this result. Trichoderma spp., Bacillus spp., and Mucor moelleri were isolated from the V. corymbosum plants. Discussion This work revealed a native microbial community capable of establishing mycorrhizal relationships, and with beneficial physiological traits for blueberry production. It was also possible to isolate several naturally-occurring microorganisms that are known to have plant growth-promoting activity and confer tolerance to hydric stress, a serious climate change threat. Future studies should be performed with these isolates to disclose their efficiency in conferring the needed resilience for this and several crops.
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Affiliation(s)
- Anicia Gomes
- Department of Biology, Faculty of Sciences, University of Porto, Porto, Portugal
- LAQV-REQUIMTE, Department of Biology, Faculty of Sciences, University of Porto, Porto, Portugal
| | - Rodrigo Narciso
- Department of Biology, Faculty of Sciences, University of Porto, Porto, Portugal
- LAQV-REQUIMTE, Department of Biology, Faculty of Sciences, University of Porto, Porto, Portugal
| | - Laura Regalado
- Department of Biology, Faculty of Sciences, University of Porto, Porto, Portugal
- LAQV-REQUIMTE, Department of Biology, Faculty of Sciences, University of Porto, Porto, Portugal
| | - Margarida Cardeano Pinheiro
- Department of Biology, Faculty of Sciences, University of Porto, Porto, Portugal
- LAQV-REQUIMTE, Department of Biology, Faculty of Sciences, University of Porto, Porto, Portugal
| | - Filipa Barros
- Department of Biology, Faculty of Sciences, University of Porto, Porto, Portugal
- LAQV-REQUIMTE, Department of Biology, Faculty of Sciences, University of Porto, Porto, Portugal
| | - Sara Sario
- Department of Biology, Faculty of Sciences, University of Porto, Porto, Portugal
- LAQV-REQUIMTE, Department of Biology, Faculty of Sciences, University of Porto, Porto, Portugal
| | - Conceição Santos
- Department of Biology, Faculty of Sciences, University of Porto, Porto, Portugal
- LAQV-REQUIMTE, Department of Biology, Faculty of Sciences, University of Porto, Porto, Portugal
| | - Rafael J. Mendes
- Department of Biology, Faculty of Sciences, University of Porto, Porto, Portugal
- LAQV-REQUIMTE, Department of Biology, Faculty of Sciences, University of Porto, Porto, Portugal
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Sario S, Melo-Ferreira J, Santos C. Winter Is (Not) Coming: Is Climate Change Helping Drosophila suzukii Overwintering? Biology (Basel) 2023; 12:907. [PMID: 37508339 PMCID: PMC10376787 DOI: 10.3390/biology12070907] [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: 05/03/2023] [Revised: 06/19/2023] [Accepted: 06/23/2023] [Indexed: 07/30/2023]
Abstract
Anthropogenic challenges, particularly climate change-associated factors, are strongly impacting the behavior, distribution, and survival of insects. Yet how these changes affect pests such as Drosophila suzukii, a cosmopolitan pest of soft-skinned small fruits, remains poorly understood. This polyphagous pest is chill-susceptible, with cold temperatures causing multiple stresses, including desiccation and starvation, also challenging the immune system. Since the invasion of Europe and the United States of America in 2009, it has been rapidly spreading to several European and American countries (both North and South American) and North African and Asian countries. However, globalization and global warming are allowing an altitudinal and latitudinal expansion of the species, and thus the colonization of colder regions. This review explores how D. suzukii adapts to survive during cold seasons. We focus on overwintering strategies of behavioral adaptations such as migration or sheltering, seasonal polyphenism, reproductive adaptations, as well as metabolic and transcriptomic changes in response to cold. Finally, we discuss how the continuation of climate change may promote the ability of this species to survive and spread, and what mitigation measures could be employed to overcome cold-adapted D. suzukii.
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Affiliation(s)
- Sara Sario
- Biology Department, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
- LAQV-REQUIMTE, Faculty of Sciences, University of Porto, 4050-453 Porto, Portugal
| | - José Melo-Ferreira
- Biology Department, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
- CIBIO-Research Centre in Biodiversity and Genetic Resources, InBIO Associate Laboratory, 4485-661 Vairão, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, 4485-661 Vairão, Portugal
| | - Conceição Santos
- Biology Department, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
- LAQV-REQUIMTE, Faculty of Sciences, University of Porto, 4050-453 Porto, Portugal
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Regalado L, Sario S, Mendes RJ, Valle J, Harvey PJ, Teixeira C, Gomes P, Andreu D, Santos C. Towards a Sustainable Management of the Spotted-Wing Drosophila: Disclosing the Effects of Two Spider Venom Peptides on Drosophila suzukii. Insects 2023; 14:533. [PMID: 37367349 DOI: 10.3390/insects14060533] [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: 04/28/2023] [Revised: 06/03/2023] [Accepted: 06/05/2023] [Indexed: 06/28/2023]
Abstract
The spotted-wing drosophila (Drosophila suzukii) is a polyphagous pest that causes severe damage and economic losses to soft-skinned fruit production. Current control methods are dominated by inefficient cultural practices and broad-spectrum insecticides that, in addition to having toxic effects on non-target organisms, are becoming less effective due to acquired resistance. The increasing awareness of the real impact of insecticides on health and the environment has promoted the exploration of new insecticidal compounds, addressing novel molecular targets. This study explores the efficacy of two orally delivered spider venom peptides (SVPs), J-atracotoxin-Hv1c (Hv1c) and µ-theraphotoxin-Hhn2b (TRTX), to manage D. suzukii, through survival assays and the evaluation of gene expression associated with detoxification pathways. Treatment with TRTX at 111.5 µM for 48 h enhanced fly longevity compared with the control group. Gene expression analysis suggests that detoxification and stress-related mechanisms, such as expression of P450 proteins and apoptotic stimuli signaling, are triggered in D. suzukii flies in response to these treatments. Our results highlight the potential interest of SVPs to control this pest, shedding light on how to ultimately develop improved target-specific formulations.
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Affiliation(s)
- Laura Regalado
- iB2, Biology Department, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
- LAQV-REQUIMTE, Faculty of Sciences, University of Porto, 4050-453 Porto, Portugal
| | - Sara Sario
- iB2, Biology Department, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
- LAQV-REQUIMTE, Faculty of Sciences, University of Porto, 4050-453 Porto, Portugal
| | - Rafael J Mendes
- iB2, Biology Department, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
- LAQV-REQUIMTE, Faculty of Sciences, University of Porto, 4050-453 Porto, Portugal
| | - Javier Valle
- Proteomics and Protein Chemistry Unit, Department of Medicine and Life Sciences, Pompeu Fabra University, 08002 Barcelona, Spain
| | - Peta J Harvey
- Institute for Molecular Bioscience, Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Cátia Teixeira
- LAQV-REQUIMTE, Faculty of Sciences, University of Porto, 4050-453 Porto, Portugal
| | - Paula Gomes
- LAQV-REQUIMTE, Faculty of Sciences, University of Porto, 4050-453 Porto, Portugal
| | - David Andreu
- Proteomics and Protein Chemistry Unit, Department of Medicine and Life Sciences, Pompeu Fabra University, 08002 Barcelona, Spain
| | - Conceição Santos
- iB2, Biology Department, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
- LAQV-REQUIMTE, Faculty of Sciences, University of Porto, 4050-453 Porto, Portugal
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Santos C, Valentim AM, Félix L, Balça-Silva J, Pinto MLR. Longitudinal effects of ketamine on cell proliferation and death in the CNS of zebrafish. Neurotoxicology 2023; 97:78-88. [PMID: 37196828 DOI: 10.1016/j.neuro.2023.05.008] [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: 04/13/2023] [Revised: 05/12/2023] [Accepted: 05/13/2023] [Indexed: 05/19/2023]
Abstract
Zebrafish is known for its widespread neurogenesis and regenerative capacity, as well as several biological advantages, which turned it into a relevant animal model in several areas of research, namely in toxicological studies. Ketamine is a well-known anesthetic used both in human as well as veterinary medicine, due to its safety, short duration and unique mode of action. However, ketamine administration is associated with neurotoxic effects and neuronal death, which renders its use on pediatric medicine problematic. Thus, the evaluation of ketamine effects administration at early stages of neurogenesis is of pivotal importance. The 1-4 somites stage of zebrafish embryo development corresponds to the beginning of segmentation and formation of neural tube. In this species, as well as in other vertebrates, longitudinal studies are scarce, and the evaluation of ketamine long-term effects in adults is poorly understood. This study aimed to assess the effects of ketamine administration at the 1-4 somites stage, both in subanesthetic and anesthetic concentrations, in brain cellular proliferation, pluripotency and death mechanisms in place during early and adult neurogenesis. For that purpose, embryos at the 1-4 somites stage (10,5hours post fertilization - hpf) were distributed into study groups and exposed for 20minutes to ketamine concentrations at 0.2/0.8mg/mL. Animals were grown until defined check points, namely 50 hpf, 144 hpf and 7 months adults. The assessment of the expression and distribution patterns of proliferating cell nuclear antigen (PCNA), of sex-determining region Y-box 2 (Sox 2), apoptosis-inducing factor (AIF) and microtubule-associated protein 1 light chain 3 (LC3) was performed by Western-blot and immunohistochemistry. The results evidenced the main alterations in 144 hpf larvae, namely in autophagy and in cellular proliferation at the highest concentration of ketamine (0.8mg/mL). Nonetheless, in adults no significant alterations were seen, pointing to a return to a homeostatic stage. This study allowed clarifying some of the aspects pertaining the longitudinal effects of ketamine administration regarding the CNS capacity to proliferate and activate the appropriate cell death and repair mechanisms leading to homeostasis in zebrafish. Moreover, the results indicate that ketamine administration at 1-4 somites stage in the subanesthetic and anesthetic concentrations despite some transitory detrimental effects at 144 hpf, is long-term safe for CNS, which are newly and promising results in this research field.
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Affiliation(s)
- C Santos
- Escola Universitária Vasco da Gama (EUVG), Centro de Investigação Vasco da Gama (CIVG), EUVG, Coimbra, Portugal; Faculdade de Medicina da Universidade de Coimbra (FMUC), Coimbra, Portugal; Centro de Ciência Animal e Veterinária (CECAV), Universidade de Trás-os-Montes e Alto Douro (UTAD), Vila Real, Portugal
| | - A M Valentim
- Instituto de Investigação e Inovação em Saúde (i3S), Instituto de Biologia Molecular e Celular (IBMC), Universidade do Porto, Porto, Portugal
| | - L Félix
- Centro de Investigação e de Tecnologias Agroambientais e Biológicas (CITAB), UTAD, Vila Real
| | - J Balça-Silva
- NOVA Medical School - Faculdade de Ciências Médicas, Universidade Nova de Lisboa (FCM-UNL), Lisboa, Portugal
| | - M L R Pinto
- Centro de Ciência Animal e Veterinária (CECAV), Universidade de Trás-os-Montes e Alto Douro (UTAD), Vila Real, Portugal.
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Santos C, Santos C, Almeida A. Malnutrition Risk In Gastrointestinal Cancer Patients And Its Association With Disease Burden. Clin Nutr ESPEN 2023. [DOI: 10.1016/j.clnesp.2022.09.347] [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: 03/28/2023]
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Quaresma MAG, Pereira G, Nunes ML, Sponda C, Jardim A, Gonçalves H, Santos C, Roseiro LC. Evaluating dried salted cod amino acid signature for nutritional quality assessment and discriminant analysis. Front Nutr 2023; 10:1144713. [PMID: 37125032 PMCID: PMC10140297 DOI: 10.3389/fnut.2023.1144713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Accepted: 03/14/2023] [Indexed: 05/02/2023] Open
Abstract
Aim Thus, the aim of this study was to answer three scientific questions: (1) Are the protein content and amino acid profile of dried salted cod influenced by species (Gadus morhua and Gadus macrocephalus)? (2) Are the protein content and amino acid profile of dried salted cod influenced by the geographical area of capture (Iceland and Norway)? and (3) Does the amino acid profile have the potential to be used as a discriminator of species and geographical areas of capture? Methods A total of 45 dried salted cods (2-3 kg of dry weight; n = 15 samples/origin) were used in this study. The Atlantic cod was fished in the Atlantic northeast (FAO 27 area) within the Exclusive Economic zones (EEZ) of Norway (n = 15) and Iceland (n = 15), while the Pacific cod was caught in the Pacific northeast (FAO 67 area) within the Alaska EEZ (n = 15). Total protein content was determined by the Kjeldahl method, in accordance with the AOAC procedures. The amino acid profile was analyzed by HPLC with fluorescence detection (at excitation and emission wavelengths of 338 and 425 nm, respectively). Results The Atlantic cod presented higher contents of total protein (33.90 versus 33.10 g/100 g of cod edible portion; p = 0.017) and total amino acid contents (32.52 versus 32.04 g/100 g of cod edible portion; p = 0.015) but displayed lower percentage of indispensable amino acids (32.16 versus 32.83 g/100 g of protein; p < 0.001) than Pacific cod. Among the Atlantic cod harvesting locations, the Norwegian cod displayed higher total amino acid contents (96.91 versus 96.81 g/100 g of protein; p = 0.012) and higher percentage of indispensable amino acids (35.38 versus 28.94 g/100 g of protein; p = 0.042) than the Icelandic counterpart. A correct classification of 100% was obtained for the Pacific and Icelandic cod varieties, but the classification accuracy in the Norwegian cod was of just 86.67%, since 2 samples out of 15 were incorrectly classified as Icelandic. Conclusion The comparison of cod species showed that the Atlantic cod had a significantly lower EAAI than the Pacific cod (p < 0.001; 88.23 versus 88.61). On the other hand, the comparison of the two origins in the Atlantic cod, showed that Norwegian cod displayed a significantly higher EAAI than the Icelandic cod (99.15 versus 77.32). The assessment of the EAAI allows the classification of the protein's nutritional quality, allowing us to classify both cod species as a good protein source to human diet. However, within the Atlantic cod, the Norwegian cod's protein is classified as high quality, while the Icelandic cod attain the classification of useful quality. Regarding the amino acid profile discriminatory potential to classify cod samples. The results show that the AA profile has 100% accuracy in the separation of cod species, but was not globally efficient in the differentiation of the Norwegian from the Icelandic cod.
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Affiliation(s)
- M. A. G. Quaresma
- CIISA—Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal
- AL4AnimalS—Associate Laboratory for Animal and Veterinary Sciences, Lisbon, Portugal
- *Correspondence: M. A. G. Quaresma,
| | - G. Pereira
- CIISA—Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal
- AL4AnimalS—Associate Laboratory for Animal and Veterinary Sciences, Lisbon, Portugal
| | - M. L. Nunes
- CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, Terminal de Cruzeiros do Porto de Leixões, University of Porto, Matosinhos, Portugal
| | - C. Sponda
- CIISA—Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal
- AL4AnimalS—Associate Laboratory for Animal and Veterinary Sciences, Lisbon, Portugal
| | - A. Jardim
- Food and Veterinary Department of Setúbal, General Directorate of Food and Veterinary (DGAV), Setúbal, Portugal
| | - H. Gonçalves
- Food Technology and Safety Division, National Institute for Agricultural and Veterinary Research (INIAV, IP), Quinta do Marquês, Oeiras, Portugal
| | - C. Santos
- Food Technology and Safety Division, National Institute for Agricultural and Veterinary Research (INIAV, IP), Quinta do Marquês, Oeiras, Portugal
| | - L. C. Roseiro
- Food Technology and Safety Division, National Institute for Agricultural and Veterinary Research (INIAV, IP), Quinta do Marquês, Oeiras, Portugal
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11
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Puttilli MR, Danzi D, Correia C, Brandi J, Cecconi D, Manfredi M, Marengo E, Santos C, Spinelli F, Polverari A, Vandelle E. Plant Signals Anticipate the Induction of the Type III Secretion System in Pseudomonas syringae pv. actinidiae, Facilitating Efficient Temperature-Dependent Effector Translocation. Microbiol Spectr 2022; 10:e0207322. [PMID: 36287008 PMCID: PMC9770001 DOI: 10.1128/spectrum.02073-22] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Accepted: 09/15/2022] [Indexed: 01/06/2023] Open
Abstract
Disease resistance in plants depends on a molecular dialogue with microbes that involves many known chemical effectors, but the time course of the interaction and the influence of the environment are largely unknown. The outcome of host-pathogen interactions is thought to reflect the offensive and defensive capabilities of both players. When plants interact with Pseudomonas syringae, several well-characterized virulence factors contribute to early bacterial pathogenicity, including the type III secretion system (T3SS), which must be activated by signals from the plant and environment to allow the secretion of virulence effectors. The manner in which these signals regulate T3SS activity is still unclear. Here, we strengthen the paradigm of the plant-pathogen molecular dialogue by addressing overlooked details concerning the timing of interactions, specifically the role of plant signals and temperature on the regulation of bacterial virulence during the first few hours of the interaction. Whole-genome expression profiling after 1 h revealed that the perception of plant signals from kiwifruit or tomato extracts anticipated T3SS expression in P. syringae pv. actinidiae compared to apoplast-like conditions, facilitating more efficient effector transport in planta, as revealed by the induction of a temperature-dependent hypersensitive response in the nonhost plant Arabidopsis thaliana Columbia-0 (Col-0). Our results show that in the arms race between plants and bacteria, the temperature-dependent timing of bacterial virulence versus the induction of plant defenses is probably one of the fundamental parameters governing the outcome of the interaction. IMPORTANCE Plant diseases-their occurrence and severity-result from the impact of three factors: the host, the pathogen, and the environmental conditions, interconnected in the disease triangle. Time was further included as a fourth factor accounting for plant disease, leading to a more realistic three-dimensional disease pyramid to represent the evolution of disease over time. However, this representation still considers time only as a parameter determining when and to what extent a disease will occur, at a scale from days to months. Here, we show that time is a factor regulating the arms race between plants and pathogens, at a scale from minutes to hours, and strictly depends on environmental factors. Thus, besides the arms possessed by pathogens and plants per se, the opportunity and the timing of arms mobilization make the difference in determining the outcome of an interaction and thus the occurrence of plant disease.
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Affiliation(s)
| | - Davide Danzi
- Department of Biotechnology, University of Verona, Verona, Italy
| | - Cristiana Correia
- Department of Biotechnology, University of Verona, Verona, Italy
- Department of Biology, LAQV-REQUIMTE, Faculty of Sciences, University of Porto, Porto, Portugal
- Department of Agricultural Sciences, Alma Mater Studiorum University of Bologna, Bologna, Italy
| | - Jessica Brandi
- Department of Biotechnology, University of Verona, Verona, Italy
| | - Daniela Cecconi
- Department of Biotechnology, University of Verona, Verona, Italy
| | - Marcello Manfredi
- Department of Translational Medicine, Center for Translational Research on Autoimmune & Allergic Diseases (CAAD), University of Piemonte Orientale, Novara, Italy
| | - Emilio Marengo
- Department of Science and Technological Innovation, University of Piemonte Orientale, Alessandria, Italy
| | - Conceição Santos
- Department of Biology, LAQV-REQUIMTE, Faculty of Sciences, University of Porto, Porto, Portugal
| | - Francesco Spinelli
- Department of Agricultural Sciences, Alma Mater Studiorum University of Bologna, Bologna, Italy
| | | | - Elodie Vandelle
- Department of Biotechnology, University of Verona, Verona, Italy
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Bedford J, Martin P, Crowe S, Wagstaff D, Santos C, Singleton G, Baumber R, Vindrola‐Padros C, Vohra R, Swart M, Oliver CM, Dorey J, Leeman I, Moonesinghe SR. Development and internal validation of a model for postoperative morbidity in adults undergoing major elective colorectal surgery: the peri-operative quality improvement programme (PQIP) colorectal risk model. Anaesthesia 2022; 77:1356-1367. [PMID: 36130834 PMCID: PMC9826419 DOI: 10.1111/anae.15858] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/28/2022] [Indexed: 01/11/2023]
Abstract
Over 1.5 million major surgical procedures take place in the UK NHS each year and approximately 25% of patients develop at least one complication. The most widely used risk-adjustment model for postoperative morbidity in the UK is the physiological and operative severity score for the enumeration of mortality and morbidity. However, this model was derived more than 30 years ago and now overestimates the risk of morbidity. In addition, contemporary definitions of some model predictors are markedly different compared with when the tool was developed. A second model used in clinical practice is the American College of Surgeons National Surgical Quality Improvement Programme risk model; this provides a risk estimate for a range of postoperative complications. This model, widely used in North America, is not open source and therefore cannot be applied to patient populations in other settings. Data from a prospective multicentre clinical dataset of 118 NHS hospitals (the peri-operative quality improvement programme) were used to develop a bespoke risk-adjustment model for postoperative morbidity. Patients aged ≥ 18 years who underwent colorectal surgery were eligible for inclusion. Postoperative morbidity was defined using the postoperative morbidity survey at postoperative day 7. Thirty-one candidate variables were considered for inclusion in the model. Death or morbidity occurred by postoperative day 7 in 3098 out of 11,646 patients (26.6%). Twelve variables were incorporated into the final model, including (among others): Rockwood clinical frailty scale; body mass index; and index of multiple deprivation quintile. The C-statistic was 0.672 (95%CI 0.660-0.684), with a bootstrap optimism corrected C-statistic of 0.666 at internal validation. The model demonstrated good calibration across the range of morbidity estimates with a mean slope gradient of predicted risk of 0.959 (95%CI 0.894-1.024) with an index-corrected intercept of -0.038 (95%CI -0.112-0.036) at internal validation. Our model provides parsimonious case-mix adjustment to quantify risk of morbidity on postoperative day 7 for a UK population of patients undergoing major colorectal surgery. Despite the C-statistic of < 0.7, our model outperformed existing risk-models in widespread use. We therefore recommend application in case-mix adjustment, where incorporation into a continuous monitoring tool such as the variable life adjusted display or exponentially-weighted moving average-chart could support high-level monitoring and quality improvement of risk-adjusted outcome at the population level.
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Affiliation(s)
- J. Bedford
- UCLH Surgical Outcomes Research Centre, Department of Anaesthesia and Peri‐operative MedicineUniversity College London Hospitals NHS Foundation TrustLondonUK,Centre for Peri‐operative Medicine, Research Department for Targeted InterventionUCL Division of Surgery and Interventional ScienceLondonUK
| | - P. Martin
- Department of Applied Health ResearchUniversity College LondonUK
| | - S. Crowe
- Clinical Operational Research UnitUniversity College LondonUK
| | - D. Wagstaff
- UCLH Surgical Outcomes Research Centre, Department of Anaesthesia and Peri‐operative MedicineUniversity College London Hospitals NHS Foundation TrustLondonUK,Centre for Peri‐operative Medicine, Research Department for Targeted InterventionUCL Division of Surgery and Interventional ScienceLondonUK
| | - C. Santos
- Health Services Research Centre, National Institute for Academic AnaesthesiaRoyal College of AnaesthetistsLondonUK
| | - G. Singleton
- Centre for Peri‐operative MedicineResearch Department for Targeted InterventionUCL Division of Surgery and Interventional ScienceLondonUK
| | - R. Baumber
- Department of AnaesthesiaRoyal National Orthopaedic Hospital NHS TrustLondonUK
| | - C. Vindrola‐Padros
- Research Department for Targeted InterventionUCL Division of Surgery and Interventional ScienceLondonUK
| | - R. Vohra
- Department of SurgeryNottingham University Hospitals NHS TrustNottinghamUK
| | - M. Swart
- Department of AnaesthesiaTorbay and South Devon NHS TrustDevonUK
| | - C. M. Oliver
- UCLH Surgical Outcomes Research Centre, Department of Anaesthesia and Peri‐operative MedicineUniversity College London Hospitals NHS Foundation TrustLondonUK,Centre for Peri‐operative MedicineResearch Department for Targeted InterventionUCL Division of Surgery and Interventional ScienceLondonUK
| | - J. Dorey
- Lay CommitteeRoyal College of Anaesthetists and Lay representatives PQIP Project teamLondonUK
| | - I. Leeman
- Lay CommitteeRoyal College of Anaesthetists and Lay representatives PQIP Project teamLondonUK
| | - S. R. Moonesinghe
- UCLH Surgical Outcomes Research Centre, Department of Anaesthesia and Peri‐operative MedicineUniversity College London Hospitals NHS Foundation TrustLondonUK,Centre for Peri‐operative Medicine, Research Department for Targeted InterventionUCL Division of Surgery and Interventional ScienceLondonUK
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13
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Dias MC, Pinto DCGA, Costa M, Araújo M, Santos C, Silva AMS. Phytochemical and Antioxidant Profile of the Medicinal Plant Melia azedarach Subjected to Water Deficit Conditions. Int J Mol Sci 2022; 23:ijms232113611. [PMID: 36362399 PMCID: PMC9656347 DOI: 10.3390/ijms232113611] [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: 09/16/2022] [Revised: 11/02/2022] [Accepted: 11/04/2022] [Indexed: 11/09/2022] Open
Abstract
Environmental stress triggered by climate change can alter the plant’s metabolite profile, which affects its physiology and performance. This is particularly important in medicinal species because their economic value depends on the richness of their phytocompounds. We aimed to characterize how water deficit modulated the medicinal species Melia azedarach’s lipophilic profile and antioxidant status. Young plants were exposed to water deficit for 20 days, and lipophilic metabolite profile and the antioxidant capacity were evaluated. Leaves of M. azedarach are rich in important fatty acids and oleamide. Water deficit increased the radical scavenging capacity, total phenol, flavonoids, and catechol pools, and the accumulation of β-sitosterol, myo-inositol, succinic acid, sucrose, d-glucose and derivatives, d-psicofuranose, d-(+)-fructofuranose, and the fatty acids stearic, α-linolenic, linoleic and palmitic acids. These responses are relevant to protecting the plant against climate change-related stress and also increase the nutritional and antioxidant quality of M. azedarach leaves.
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Affiliation(s)
- Maria Celeste Dias
- Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal
- LAQV/REQUIMTE, Department of Chemistry, Campus Universitário de Santiago, University of Aveiro, 3810-193 Aveiro, Portugal
- Correspondence:
| | - Diana C. G. A. Pinto
- LAQV/REQUIMTE, Department of Chemistry, Campus Universitário de Santiago, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Maria Costa
- LAQV/REQUIMTE, Department of Chemistry, Campus Universitário de Santiago, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Márcia Araújo
- Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal
- IB2 Lab, Department of Biology & LAQV/REQUIMTE, Faculty of Sciences, Rua do Campo, Alegre, University of Porto, 4169-007 Porto, Portugal
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro, 5001-801 Vila Real, Portugal
| | - Conceição Santos
- IB2 Lab, Department of Biology & LAQV/REQUIMTE, Faculty of Sciences, Rua do Campo, Alegre, University of Porto, 4169-007 Porto, Portugal
| | - Artur M. S. Silva
- LAQV/REQUIMTE, Department of Chemistry, Campus Universitário de Santiago, University of Aveiro, 3810-193 Aveiro, Portugal
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Correia C, Magnani F, Pastore C, Cellini A, Donati I, Pennisi G, Paucek I, Orsini F, Vandelle E, Santos C, Spinelli F. Red and Blue Light Differently Influence Actinidia chinensis Performance and Its Interaction with Pseudomonas syringae pv. Actinidiae. Int J Mol Sci 2022; 23:13145. [PMID: 36361938 PMCID: PMC9658526 DOI: 10.3390/ijms232113145] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 10/19/2022] [Accepted: 10/20/2022] [Indexed: 03/08/2024] Open
Abstract
Light composition modulates plant growth and defenses, thus influencing plant-pathogen interactions. We investigated the effects of different light-emitting diode (LED) red (R) (665 nm) and blue (B) (470 nm) light combinations on Actinidia chinensis performance by evaluating biometric parameters, chlorophyll a fluorescence, gas exchange and photosynthesis-related gene expression. Moreover, the influence of light on the infection by Pseudomonas syringae pv. actinidiae (Psa), the etiological agent of bacterial canker of kiwifruit, was investigated. Our study shows that 50%R-50%B (50R) and 25%R-75%B (25R) lead to the highest PSII efficiency and photosynthetic rate, but are the least effective in controlling the endophytic colonization of the host by Psa. Monochromatic red light severely reduced ΦPSII, ETR, Pn, TSS and photosynthesis-related genes expression, and both monochromatic lights lead to a reduction of DW and pigments content. Monochromatic blue light was the only treatment significantly reducing disease symptoms but did not reduce bacterial endophytic population. Our results suggest that monochromatic blue light reduces infection primarily by modulating Psa virulence more than host plant defenses.
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Affiliation(s)
- Cristiana Correia
- Department of Agricultural Sciences, Alma Mater Studiorum University of Bologna, Viale Fanin 46, 40127 Bologna, Italy
- IB2Lab, LAQV-Requimte, Department of Biology, Faculty of Sciences, University of Porto, Rua Campo Alegre, 4169-007 Porto, Portugal
| | - Federico Magnani
- Department of Agricultural Sciences, Alma Mater Studiorum University of Bologna, Viale Fanin 46, 40127 Bologna, Italy
| | - Chiara Pastore
- Department of Agricultural Sciences, Alma Mater Studiorum University of Bologna, Viale Fanin 46, 40127 Bologna, Italy
| | - Antonio Cellini
- Department of Agricultural Sciences, Alma Mater Studiorum University of Bologna, Viale Fanin 46, 40127 Bologna, Italy
| | - Irene Donati
- Department of Agricultural Sciences, Alma Mater Studiorum University of Bologna, Viale Fanin 46, 40127 Bologna, Italy
| | - Giuseppina Pennisi
- Department of Agricultural Sciences, Alma Mater Studiorum University of Bologna, Viale Fanin 46, 40127 Bologna, Italy
| | - Ivan Paucek
- Department of Agricultural Sciences, Alma Mater Studiorum University of Bologna, Viale Fanin 46, 40127 Bologna, Italy
| | - Francesco Orsini
- Department of Agricultural Sciences, Alma Mater Studiorum University of Bologna, Viale Fanin 46, 40127 Bologna, Italy
| | - Elodie Vandelle
- Department of Biotechnology, University of Verona, 37134 Verona, Italy
| | - Conceição Santos
- IB2Lab, LAQV-Requimte, Department of Biology, Faculty of Sciences, University of Porto, Rua Campo Alegre, 4169-007 Porto, Portugal
| | - Francesco Spinelli
- Department of Agricultural Sciences, Alma Mater Studiorum University of Bologna, Viale Fanin 46, 40127 Bologna, Italy
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Rio BC, Lima MMS, Alves ADR, Santos VS, Lopes JIF, Santos C, Bastos L, Pinto MA, Oliveira JM, Filho LMA, Leon LAA. PARVOVIRUS B19 EM DOADORES DE SANGUE: AVALIAÇÃO DA INCIDÊNCIA E DO RISCO DE TRANSMISSÃO RESIDUAL POR TRANSFUSÃO SANGUÍNEA NO ESTADO DO RIO DE JANEIRO. Hematol Transfus Cell Ther 2022. [DOI: 10.1016/j.htct.2022.09.828] [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: 11/07/2022] Open
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16
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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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Ramos-Zaldívar H, Reyes-Perdomo K, Espinoza-Moreno N, Dox-Cruz E, Urbina T, Caballero A, Dominguez E, Calix S, Monterroso-Reyes J, Vásquez E, Ortiz T, Rodríguez-Machado H, Solis M, Silva I, Galeano M, Alvarado A, Medina A, Guerrero-Díaz L, Jiménez-Faraj J, Santos C, Arita W, Montufar D, Sabillón J, Sorto M, Navarro X, Palomo-Bermúdez V, Andino H, Guzman S, Reyes M, Pazf E, Enamorado J, Sagastume Y, Rivera A, Sarmiento C, Pineda X, Puerto V, Landaverde J, Reyes S, Perdomo I, Rivera J, Girón W, Sabillón K, Leiva P, Toro K, Montes-Gambarelli J, Flores C, Salas-Huenuleo E, Andia M. SAFETY AND EFFICACY OF THYMIC PEPTIDES IN THE TREATMENT OF HOSPITALIZED COVID-19 PATIENTS IN HONDURAS. Georgian Med News 2022:99-105. [PMID: 36427851] [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: 06/16/2023]
Abstract
Coronavirus disease 2019 (Covid-19) active cases continue to demand the development of safe and effective treatments. This is the first clinical trial to evaluate the safety and efficacy of oral thymic peptides. ; We conducted a nonrandomized phase 2 trial with a historic control group to evaluate the safety and efficacy of a daily 250-mg oral dose of thymic peptides in the treatment of hospitalized Covid-19 patients. Comparisons based on standard care from registry data were performed after propensity score matching. The primary outcomes were survival, time to recovery, and number of participants with treatment-related adverse events or side effects by day 20. ; A total of 44 patients were analyzed in this study: 22 in the thymic peptide group and 22 in the standard care group. There were no deaths in the intervention group compared to 24% mortality in standard care by day 20 (log-rank P=0.02). Kaplan-Meier analysis showed a significantly shorter time to recovery by day 20 in the thymic peptide group than in the standard care group (median, 6 days vs. 12 days; hazard ratio for recovery, 2.75 [95% confidence interval, 1.34 to 5.62]; log-rank P=0.002). No side effects or adverse events were reported. ; In patients hospitalized with Covid-19, the use of thymic peptides resulted in no side effects, adverse events, or deaths by day 20. Compared with the registry data, a significantly shorter time to recovery and mortality reduction were measured.
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Affiliation(s)
- H Ramos-Zaldívar
- 1Grupo de Investigación Médica de la Universidad Católica de Honduras, (GIMUNICAH), Faculty of Medicine, Universidad Católica de Honduras; 2Doctoral Program in Medical Sciences, Faculty of Medicine, Pontificia Universidad Católica de Chile
| | - K Reyes-Perdomo
- 1Grupo de Investigación Médica de la Universidad Católica de Honduras, (GIMUNICAH), Faculty of Medicine, Universidad Católica de Honduras; 3Psiquiatría Infantil y del Adolescente, Hospital Barros Luco Trudeau, Facultad de Ciencias Médicas, Universidad de Santiago de Chile
| | - N Espinoza-Moreno
- 1Grupo de Investigación Médica de la Universidad Católica de Honduras, (GIMUNICAH), Faculty of Medicine, Universidad Católica de Honduras
| | - E Dox-Cruz
- 1Grupo de Investigación Médica de la Universidad Católica de Honduras, (GIMUNICAH), Faculty of Medicine, Universidad Católica de Honduras
| | - Th Urbina
- 1Grupo de Investigación Médica de la Universidad Católica de Honduras, (GIMUNICAH), Faculty of Medicine, Universidad Católica de Honduras
| | - A Caballero
- 1Grupo de Investigación Médica de la Universidad Católica de Honduras, (GIMUNICAH), Faculty of Medicine, Universidad Católica de Honduras
| | - E Dominguez
- 1Grupo de Investigación Médica de la Universidad Católica de Honduras, (GIMUNICAH), Faculty of Medicine, Universidad Católica de Honduras
| | - S Calix
- 1Grupo de Investigación Médica de la Universidad Católica de Honduras, (GIMUNICAH), Faculty of Medicine, Universidad Católica de Honduras
| | - J Monterroso-Reyes
- 1Grupo de Investigación Médica de la Universidad Católica de Honduras, (GIMUNICAH), Faculty of Medicine, Universidad Católica de Honduras
| | - E Vásquez
- 1Grupo de Investigación Médica de la Universidad Católica de Honduras, (GIMUNICAH), Faculty of Medicine, Universidad Católica de Honduras
| | - T Ortiz
- 1Grupo de Investigación Médica de la Universidad Católica de Honduras, (GIMUNICAH), Faculty of Medicine, Universidad Católica de Honduras
| | - H Rodríguez-Machado
- 1Grupo de Investigación Médica de la Universidad Católica de Honduras, (GIMUNICAH), Faculty of Medicine, Universidad Católica de Honduras
| | - M Solis
- 1Grupo de Investigación Médica de la Universidad Católica de Honduras, (GIMUNICAH), Faculty of Medicine, Universidad Católica de Honduras
| | - I Silva
- 1Grupo de Investigación Médica de la Universidad Católica de Honduras, (GIMUNICAH), Faculty of Medicine, Universidad Católica de Honduras
| | - M Galeano
- 1Grupo de Investigación Médica de la Universidad Católica de Honduras, (GIMUNICAH), Faculty of Medicine, Universidad Católica de Honduras
| | - A Alvarado
- 1Grupo de Investigación Médica de la Universidad Católica de Honduras, (GIMUNICAH), Faculty of Medicine, Universidad Católica de Honduras
| | - A Medina
- 1Grupo de Investigación Médica de la Universidad Católica de Honduras, (GIMUNICAH), Faculty of Medicine, Universidad Católica de Honduras
| | - L Guerrero-Díaz
- 1Grupo de Investigación Médica de la Universidad Católica de Honduras, (GIMUNICAH), Faculty of Medicine, Universidad Católica de Honduras
| | - J Jiménez-Faraj
- 1Grupo de Investigación Médica de la Universidad Católica de Honduras, (GIMUNICAH), Faculty of Medicine, Universidad Católica de Honduras; 4Hospital Civil de Guadalajara Juan I. Menchaca, México
| | - C Santos
- 1Grupo de Investigación Médica de la Universidad Católica de Honduras, (GIMUNICAH), Faculty of Medicine, Universidad Católica de Honduras; 5Hospital del Valle, San Pedro Sula, Honduras
| | - W Arita
- 1Grupo de Investigación Médica de la Universidad Católica de Honduras, (GIMUNICAH), Faculty of Medicine, Universidad Católica de Honduras
| | - D Montufar
- 1Grupo de Investigación Médica de la Universidad Católica de Honduras, (GIMUNICAH), Faculty of Medicine, Universidad Católica de Honduras
| | - J Sabillón
- 1Grupo de Investigación Médica de la Universidad Católica de Honduras, (GIMUNICAH), Faculty of Medicine, Universidad Católica de Honduras
| | - M Sorto
- 1Grupo de Investigación Médica de la Universidad Católica de Honduras, (GIMUNICAH), Faculty of Medicine, Universidad Católica de Honduras
| | - X Navarro
- 1Grupo de Investigación Médica de la Universidad Católica de Honduras, (GIMUNICAH), Faculty of Medicine, Universidad Católica de Honduras
| | - V Palomo-Bermúdez
- 1Grupo de Investigación Médica de la Universidad Católica de Honduras, (GIMUNICAH), Faculty of Medicine, Universidad Católica de Honduras; 5Hospital del Valle, San Pedro Sula, Honduras
| | - H Andino
- 1Grupo de Investigación Médica de la Universidad Católica de Honduras, (GIMUNICAH), Faculty of Medicine, Universidad Católica de Honduras
| | - S Guzman
- 6Hospital Santa Bárbara Integrado, Santa Bárbara, Honduras
| | - M Reyes
- 6Hospital Santa Bárbara Integrado, Santa Bárbara, Honduras
| | - E Pazf
- 6Hospital Santa Bárbara Integrado, Santa Bárbara, Honduras
| | - J Enamorado
- 6Hospital Santa Bárbara Integrado, Santa Bárbara, Honduras
| | - Y Sagastume
- 6Hospital Santa Bárbara Integrado, Santa Bárbara, Honduras
| | - A Rivera
- 6Hospital Santa Bárbara Integrado, Santa Bárbara, Honduras
| | - C Sarmiento
- 6Hospital Santa Bárbara Integrado, Santa Bárbara, Honduras
| | - X Pineda
- 6Hospital Santa Bárbara Integrado, Santa Bárbara, Honduras
| | - V Puerto
- 6Hospital Santa Bárbara Integrado, Santa Bárbara, Honduras
| | - J Landaverde
- 6Hospital Santa Bárbara Integrado, Santa Bárbara, Honduras6Hospital Santa Bárbara Integrado, Santa Bárbara, Honduras
| | - S Reyes
- 6Hospital Santa Bárbara Integrado, Santa Bárbara, Honduras
| | - I Perdomo
- 6Hospital Santa Bárbara Integrado, Santa Bárbara, Honduras
| | - J Rivera
- 6Hospital Santa Bárbara Integrado, Santa Bárbara, Honduras
| | - W Girón
- 6Hospital Santa Bárbara Integrado, Santa Bárbara, Honduras
| | - K Sabillón
- 6Hospital Santa Bárbara Integrado, Santa Bárbara, Honduras
| | - P Leiva
- 7Triaje de Santa Bárbara, Secretaría de Salud de Honduras
| | - K Toro
- 7Triaje de Santa Bárbara, Secretaría de Salud de Honduras
| | - J Montes-Gambarelli
- 1Grupo de Investigación Médica de la Universidad Católica de Honduras, (GIMUNICAH), Faculty of Medicine, Universidad Católica de Honduras
| | - C Flores
- 1Grupo de Investigación Médica de la Universidad Católica de Honduras, (GIMUNICAH), Faculty of Medicine, Universidad Católica de Honduras; 8Laboratorio de Biología Molecular de San Pedro Sula, Secretaría de Salud de Honduras
| | | | - M Andia
- 10Biomedical Imaging Center Radiology Department, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile; 11Millennium Nucleus in Cardiovascular Magnetic Resonance, Santiago, Chile
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Magalhaes B, Fernandes C, Santos C. CN4 iGestSaúde: Portuguese mobile application for the self-management of symptoms associated with chemotherapy treatment. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.314] [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] Open
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Mendes RJ, Amaro C, Luz JP, Tavares F, Santos C. Variability within a clonal population of Erwinia amylovora disclosed by phenotypic analysis. PeerJ 2022; 10:e13695. [PMID: 35891645 PMCID: PMC9308965 DOI: 10.7717/peerj.13695] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 06/16/2022] [Indexed: 01/17/2023] Open
Abstract
Background Fire blight is a destructive disease of pome trees, caused by Erwinia amylovora, leading to high losses of chain-of-values fruits. Major outbreaks were registered between 2010 and 2017 in Portugal, and the first molecular epidemiological characterization of those isolates disclosed a clonal population with different levels of virulence and susceptibility to antimicrobial peptides. Methods This work aimed to further disclose the genetic characterization and unveil the phenotypic diversity of this E. amylovora population, resorting to MLSA, growth kinetics, biochemical characterization, and antibiotic susceptibility. Results While MLSA further confirmed the genetic clonality of those isolates, several phenotypic differences were recorded regarding their growth, carbon sources preferences, and chemical susceptibility to several antibiotics, disclosing a heterogeneous population. Principal component analysis regarding the phenotypic traits allows to separate the strains Ea 630 and Ea 680 from the remaining. Discussion Regardless the genetic clonality of these E. amylovora strains isolated from fire blight outbreaks, the phenotypic characterization evidenced a population diversity beyond the genotype clonality inferred by MLSA and CRISPR, suggesting that distinct sources or environmental adaptations of this pathogen may have occurred. Conclusion Attending the characteristic clonality of E. amylovora species, the data gathered here emphasizes the importance of phenotypic assessment of E. amylovora isolates to better understand their epidemiological behavior, namely by improving source tracking, make risk assessment analysis, and determine strain-specific environmental adaptations, that might ultimately lead to prevent new outbreaks.
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Affiliation(s)
- Rafael J. Mendes
- Biology Department, Faculty of Sciences, University of Porto, Porto, Portugal,LAQV-REQUIMTE, Faculty of Sciences, University of Porto, Porto, Portugal,CITAB, University of Trás-os-Montes e Alto Douro, Vila Real, Portugal,CIBIO, Research Centre in Biodiversity and Genetic Resources, InBIO, Associated Laboratory, Campus Agrário de Vairão, Faculty of Sciences, University of Porto, Vairão, Portugal,BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, Vairão, Portugal
| | - Conceição Amaro
- QRural, School of Agriculture, Polytechnic Institute of Castelo Branco, Castelo Branco, Portugal
| | - João Pedro Luz
- QRural, School of Agriculture, Polytechnic Institute of Castelo Branco, Castelo Branco, Portugal
| | - Fernando Tavares
- Biology Department, Faculty of Sciences, University of Porto, Porto, Portugal,CIBIO, Research Centre in Biodiversity and Genetic Resources, InBIO, Associated Laboratory, Campus Agrário de Vairão, Faculty of Sciences, University of Porto, Vairão, Portugal,BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, Vairão, Portugal
| | - Conceição Santos
- Biology Department, Faculty of Sciences, University of Porto, Porto, Portugal,LAQV-REQUIMTE, Faculty of Sciences, University of Porto, Porto, Portugal
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Mariz-Ponte N, Gimranov E, Rego R, Moura L, Santos C, Tavares F. Distinct phenotypic behaviours within a clonal population of Pseudomonas syringae pv. actinidiae. PLoS One 2022; 17:e0269343. [PMID: 35679321 PMCID: PMC9182710 DOI: 10.1371/journal.pone.0269343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 05/18/2022] [Indexed: 11/18/2022] Open
Abstract
Bacterial canker of the kiwifruit caused by the etiological agent Pseudomonas syringae pv. actinidiae is the most severe disease in kiwifruit production. Since 2008 a hypervirulent Psa biovar 3 has spread rapidly worldwide. Different genomic and phenotypic approaches have been used to understand the origin of the dissemination and geographical evolution of populations associated with this pandemic. This study aimed to characterize the genetic and phenotypic diversity of 22 Psa isolates collected in different regions of Portugal between 2013 and 2017. Genotypic and phenotypic characterization was based on Multi-Locus Sequence Analysis (MLSA), motility, IAA production, Biolog GEN III, and copper sensitivity. No polymorphisms were detected for the concatenated sequence (1950 bp) of the housekeeping genes gltA, gapA, gyrB, and rpoD. Results support the analysed Portuguese Psa isolates (2013–2017) belonging to Psa3, and MLSA indicates high genetic clonality and stability of these populations. The phenotypic analysis through Biolog revealed a heterogeneous pattern in the Psa collection and its position in the Pseudomonas complex. This heterogeneity reflects a genomic diversity that may reflect distinct adaptive trends associated with the environmental conditions and widespread. The Portuguese Psa collection showed no resistance to copper. This information is relevant to kiwi producers that predominantly use Cu-treatments to control kiwifruit bacterial canker.
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Affiliation(s)
- Nuno Mariz-Ponte
- Biology Department, Faculty of Sciences, University of Porto (FCUP), Porto, Portugal
- LAQV-REQUIMTE, Biology Department, Faculty of Sciences, University of Porto (FCUP), Porto, Portugal
- CIBIO-Research Centre in Biodiversity and Genetic Resources, In-BIO-Associate Laboratory, Campus de Vairão, University of Porto, Vairão, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, Vairão, Portugal
- * E-mail:
| | - Emil Gimranov
- Biology Department, Faculty of Sciences, University of Porto (FCUP), Porto, Portugal
- LAQV-REQUIMTE, Biology Department, Faculty of Sciences, University of Porto (FCUP), Porto, Portugal
| | - Rute Rego
- CISAS—Centre for Research and Development in Agrifood Systems and Sustainability, Instituto Politécnico de Viana do Castelo, Viana do Castelo, Portugal
| | - Luísa Moura
- CISAS—Centre for Research and Development in Agrifood Systems and Sustainability, Instituto Politécnico de Viana do Castelo, Viana do Castelo, Portugal
| | - Conceição Santos
- Biology Department, Faculty of Sciences, University of Porto (FCUP), Porto, Portugal
- LAQV-REQUIMTE, Biology Department, Faculty of Sciences, University of Porto (FCUP), Porto, Portugal
| | - Fernando Tavares
- Biology Department, Faculty of Sciences, University of Porto (FCUP), Porto, Portugal
- CIBIO-Research Centre in Biodiversity and Genetic Resources, In-BIO-Associate Laboratory, Campus de Vairão, University of Porto, Vairão, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, Vairão, Portugal
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Gomes R, Santos C, Descalço N, Moutinho F. Does my lifestyle explain my depression? The role of exercise, diet and smoking in the prevention of depression. Eur Psychiatry 2022. [PMCID: PMC9567587 DOI: 10.1192/j.eurpsy.2022.1751] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction Depression as a public health concern highlights the importance of prevention. The nature of the disease is complex, linked to numerous biopsychosocial factors. However, it was found that healthiest lifestyle reduced 67% the risk of depressive symptoms. Objectives To review evidence on how exercise, diet, and smoking impact on the risk of depression. Methods Non-systematic review of literature through search on PubMed/MEDLINE following the terms “Lifestyles”,“risk” and “depression”. Results Several studies have shown that exercise reduces the incidence of depressive symptoms and major depressive disorder regardless of intensity, geographic region, age, gender, or follow-up period. Smoking significantly increases the risk of depression, including the ones exposed to second-hand smoking and pregnant women in which prenatal smoking was associated with a three-fold increased risk of postpartum depression. The Mediterranean diet rich in complex carbohydrates, omega-3 fatty acids, B-group vitamins and several amino acids have shown a negative association with the incidence of depression. A high frequency of breakfast consumption, an increased intake of fruits, vegetables, and some specific nutrients (zinc, iron, magnesium, vitamins, and folate) was also inversely correlated with prevalence of depressive symptoms. On the other hand, western dietary patterns, with sweetened beverages, processed food, and foods rich in saturated fatty acids, have been linked to an increased risk. Skipping meals and snacking on unhealthy food also contributes to depressive symptoms. Conclusions Relatively modest changes in population diet, tobacco consumption and levels of exercise may have important public mental health benefits preventing a substantial number of new cases of depression. Disclosure No significant relationships.
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Turato E, Rodrigues J, Santos C, Bispo A, Lima C. Is the Living Will an interesting way to determine themselves? Qualitative research about considerations said by oncologists in a university service care in Southeast Brazil. Eur Psychiatry 2022. [PMCID: PMC9566877 DOI: 10.1192/j.eurpsy.2022.1694] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction What does the physician think in his/her intimacy about clinical care for when his/her death would be near? Living Will is a type of advance directive with the aim to guarantee the testator’s autonomy when faced with death. Particularly oncologists are often faced with human finitude. Their delicate work does not protect them from the possible anguish of thinking and preparing for their own death. It is pertinent to know the psychic mechanisms normally present in the management of this expectation. Objectives To explore symbolic representations of oncologists such as referred to the possible elaboration of their own Living Will. Methods Qualitative design. Eight participants, clinicians, sample closed by theoretical saturation of information. Semidirected interviews in-depth were conducted online during the pandemic, fully transcribed. Technique of Clinical-Qualitative Content Analysis used for data treatment to generate categories of discussion. The authors search for core meanings in the corpus of interviews, after free-floating readings. Results Three categories emerged from the material: Living Will: postponing the decision in order to not anticipate death; From Rationalization Mechanism to Intellectualization: a more sophisticated defensive strategy; Loss of Autonomy: the doctor’s belief while to feel him/herself patient. Conclusions (1) Even with all scientific knowledge, respondents have archaic thoughts on defining advance directives as healthy individuals would mean rushing time of their death. (2) Resistance of these professionals to an imagined scenario of end reveals underlying anguish in writing of living will. (3) There is fear of losing autonomy when they do not know how their Living Will can be seen. Disclosure No significant relationships.
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Gomes R, Santos C, Descalço N, Moutinho F. Apathy - where do we find it and how to treat. Eur Psychiatry 2022. [PMCID: PMC9568103 DOI: 10.1192/j.eurpsy.2022.2275] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction
Although defined heterogeneously within the literature apathy is classified as a multidimensional deficit with emotional, behavioral, and cognitive domains in which there is a decrease in self-motivated/goal-directed activity. Recently conceptualized as a syndrome but lacking a universal screening tool.
Objectives
Review current knowledge on apathy and its best therapeutic approach.
Methods
Non-systematic review of literature through search on PubMed/MEDLINE following the terms “apathy”and“psychiatry”.
Results
Apathy is amongst the most frequent symptoms of dementia and highly prevalent across different forms and stages of dementia, including mild cognitive impairment (MCI) as well as other neurodegenerative and psychiatric disorders such as Parkinson’s disease (PD), Schizophrenia, Depression and Brain Injury. Individuals with apathy have higher frequencies of cognitive impairment and are less likely to be compliant/respond to treatment for comorbid illnesses. Apathy reduces quality of life, increases mortality and leads to caregivers distress - often identified as the most burdensome symptom. Once treatment should favor dopaminergic neurotransmission, psychostimulants were considered. Methylphenidate showed encouraging results as well as dopamine agonists but both with limited evidence. Atypical antipsychotics(APs) seem beneficial compared to typical APs. Antidepressants did not improve symptoms and may even worsen them. Previously reported benefits of acetylcholinesterase inhibitors (AChEIs) were not replicated in recent studies except for rivastigmine in PD. Nonpharmacological interventions are also important.
Conclusions
Apathy occurs frequently in a broad range of neuropsychiatric conditions and considering its impact on patients´ quality of life more studies are needed to find an efficient treatment. A consensus regarding definition and screening tools would allow a better approach.
Disclosure
No significant relationships.
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Rosário F, Creylman J, Verheyen G, Van Miert S, Santos C, Hoet P, Oliveira H. Impact of Particle Size on Toxicity, Tissue Distribution and Excretion Kinetics of Subchronic Intratracheal Instilled Silver Nanoparticles in Mice. Toxics 2022; 10:toxics10050260. [PMID: 35622673 PMCID: PMC9147840 DOI: 10.3390/toxics10050260] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 05/11/2022] [Accepted: 05/16/2022] [Indexed: 11/16/2022]
Abstract
The unique physicochemical properties of silver nanoparticles (AgNPs) make them useful in a wide range of sectors, increasing their propensity for human exposure, as well as the need for thorough toxicological assessment. The biodistribution of silver, hematological parameters and GSH/GSSG levels in the lung and liver were studied in mice that were intratracheally instilled with AgNP (5 and 50 nm) and AgNO3 once a week for 5 weeks, followed by a recovery period of up to 28 days (dpi). Data was gathered to build a PBPK model after the entry of AgNPs into the lungs. AgNPs could be absorbed into the blood and might cross the physiological barriers and be distributed extensively in mice. Similar to AgNO3, AgNP5 induced longer-lasting toxicity toward blood cells and increased GSH levels in the lung. The exposure to AgNP50 increased the GSH from 1 dpi onward in the liver and silver was distributed to the organs after exposure, but its concentration decreased over time. In AgNP5 treated mice, silver levels were highest in the spleen, kidney, liver and blood, persisting for at least 28 days, suggesting accumulation. The major route for excretion seemed to be through the urine, despite a high concentration of AgNP5 also being found in feces. The modeled silver concentration was in line with the in vivo data for the heart and liver.
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Affiliation(s)
- Fernanda Rosário
- Department of Biology & CESAM, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
- Correspondence: (F.R.); (H.O.)
| | - Jan Creylman
- RADIUS Group, Thomas More University College, Campus Kempen, Kleinhoefstraat 4, 2440 Geel, Belgium; (J.C.); (G.V.); (S.V.M.)
| | - Geert Verheyen
- RADIUS Group, Thomas More University College, Campus Kempen, Kleinhoefstraat 4, 2440 Geel, Belgium; (J.C.); (G.V.); (S.V.M.)
| | - Sabine Van Miert
- RADIUS Group, Thomas More University College, Campus Kempen, Kleinhoefstraat 4, 2440 Geel, Belgium; (J.C.); (G.V.); (S.V.M.)
| | - Conceição Santos
- Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal;
| | - Peter Hoet
- Occupational and Environmental Toxicology, KU Leuven, ON1 Campus Gasthuisberg, Herestraat 49, 3000 Leuven, Belgium;
| | - Helena Oliveira
- Department of Biology & CESAM, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
- Correspondence: (F.R.); (H.O.)
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Zegre M, Barros J, Ribeiro IAC, Santos C, Caetano LA, Gonçalves L, Monteiro Resource FJ, Ferraz MP, Bettencourt A. Poly(DL-lactic acid) scaffolds as a bone targeting platform for the co-delivery of antimicrobial agents against S. aureus-C. albicans mixed biofilms. Int J Pharm 2022; 622:121832. [PMID: 35595042 DOI: 10.1016/j.ijpharm.2022.121832] [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: 02/10/2022] [Revised: 05/11/2022] [Accepted: 05/12/2022] [Indexed: 10/18/2022]
Abstract
New strategies for the treatment of polymicrobial bone infections are required. In this study, the co-delivery of two antimicrobials by poly(D,L-lactic acid) (PDLLA) scaffolds was investigated in a polymicrobial biofilm model. PDLLA scaffolds were prepared by solvent casting/particulate leaching methodology, incorporating minocycline and voriconazole as clinically relevant antimicrobial agents. The scaffolds presented a sponge-like appearance, suitable to support cell proliferation and drug release. Single- and dual-species biofilm models of Staphylococcus aureus and Candida albicans were developed and characterized. S. aureus presented a higher ability to form single-species biofilms, compared to C. albicans. Minocycline and voriconazole-loaded PDLLA scaffolds showed activity against S. aureus and C. albicans single- and dual-biofilms. Ultimately, the cytocompatibility/functional activity of PDLLA scaffolds observed in human MG-63 osteosarcoma cells unveil their potential as a next-generation co-delivery system for antimicrobial therapy in bone infections.
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Affiliation(s)
- M Zegre
- Research Institute for Medicines (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003, Lisboa, Portugal; H&TRC - Centro de Investigação em Saúde e Tecnologia, ESTeSL - Escola Superior de Tecnologia da Saúde de Lisboa, IPL - Instituto Politécnico de Lisboa, Av. D. João II, Lote 4.69.01, 1990-096, Lisboa, Portugal
| | - J Barros
- i3S - Instituto de Investigação e Inovação em Saúde - Associação, Universidade do Porto, R. Alfredo Allen 208, 4200-135, Porto, Portugal; INEB - Instituto de Engenharia Biomédica, Universidade do Porto, R. Alfredo Allen 208, 4200-135, Porto, Portugal
| | - I A C Ribeiro
- Research Institute for Medicines (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003, Lisboa, Portugal
| | - C Santos
- CQE - Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1049-001,Lisboa, Portugal; EST Setúbal, CDP2T, Instituto Politécnico de Setúbal, Campus IPS, 2910 Setúbal,Portugal
| | - L A Caetano
- Research Institute for Medicines (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003, Lisboa, Portugal; H&TRC - Centro de Investigação em Saúde e Tecnologia, ESTeSL - Escola Superior de Tecnologia da Saúde de Lisboa, IPL - Instituto Politécnico de Lisboa, Av. D. João II, Lote 4.69.01, 1990-096, Lisboa, Portugal
| | - L Gonçalves
- Research Institute for Medicines (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003, Lisboa, Portugal
| | - F J Monteiro Resource
- i3S - Instituto de Investigação e Inovação em Saúde - Associação, Universidade do Porto, R. Alfredo Allen 208, 4200-135, Porto, Portugal; INEB - Instituto de Engenharia Biomédica, Universidade do Porto, R. Alfredo Allen 208, 4200-135, Porto, Portugal; FEUP/DEMM - Departamento de Engenharia Metalúrgica e de Materiais, Faculdade de Engenharia da Universidade do Porto, 4200-465 Porto, Portugal
| | - M P Ferraz
- i3S - Instituto de Investigação e Inovação em Saúde - Associação, Universidade do Porto, R. Alfredo Allen 208, 4200-135, Porto, Portugal; INEB - Instituto de Engenharia Biomédica, Universidade do Porto, R. Alfredo Allen 208, 4200-135, Porto, Portugal; FEUP/DEMM - Departamento de Engenharia Metalúrgica e de Materiais, Faculdade de Engenharia da Universidade do Porto, 4200-465 Porto, Portugal.
| | - A Bettencourt
- Research Institute for Medicines (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003, Lisboa, Portugal.
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Sousa B, Rodrigues F, Soares C, Martins M, Azenha M, Lino-Neto T, Santos C, Cunha A, Fidalgo F. Impact of Combined Heat and Salt Stresses on Tomato Plants—Insights into Nutrient Uptake and Redox Homeostasis. Antioxidants (Basel) 2022; 11:antiox11030478. [PMID: 35326127 PMCID: PMC8944476 DOI: 10.3390/antiox11030478] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 02/24/2022] [Accepted: 02/25/2022] [Indexed: 02/06/2023] Open
Abstract
Currently, salinity and heat are two critical threats to crop production and food security which are being aggravated by the global climatic instability. In this scenario, it is imperative to understand plant responses to simultaneous exposure to different stressors and the cross-talk between underlying functional mechanisms. Thus, in this study, the physiological and biochemical responses of tomato plants (Solanum lycopersicum L.) to the combination of salinity (100 mM NaCl) and heat (42 °C; 4 h/day) stress were evaluated. After 21 days of co-exposure, the accumulation of Na+ in plant tissues was superior when salt-treated plants were also exposed to high temperatures compared to the individual saline treatment, leading to the depletion of other nutrients and a harsher negative effect on plant growth. Despite that, neither oxidative damage nor a major accumulation of reactive oxygen species took place under stress conditions, mostly due to the accumulation of antioxidant (AOX) metabolites alongside the activation of several AOX enzymes. Nonetheless, the plausible allocation of resources towards the defense pathways related to oxidative and osmotic stress, along with severe Na toxicity, heavily compromised the ability of plants to grow properly when the combination of salinity and heat was imposed.
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Affiliation(s)
- Bruno Sousa
- GreenUPorto-Sustainable Agrifood Production Research Centre & INOV4AGRO, Biology Department, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal; (C.S.); (M.M.); (F.F.)
- Correspondence: (B.S.); (F.R.)
| | - Francisca Rodrigues
- GreenUPorto-Sustainable Agrifood Production Research Centre & INOV4AGRO, Biology Department, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal; (C.S.); (M.M.); (F.F.)
- Biology Department and CBMA-Centre of Molecular and Environmental Biology, School of Sciences, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (T.L.-N.); (A.C.)
- Correspondence: (B.S.); (F.R.)
| | - Cristiano Soares
- GreenUPorto-Sustainable Agrifood Production Research Centre & INOV4AGRO, Biology Department, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal; (C.S.); (M.M.); (F.F.)
| | - Maria Martins
- GreenUPorto-Sustainable Agrifood Production Research Centre & INOV4AGRO, Biology Department, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal; (C.S.); (M.M.); (F.F.)
| | - Manuel Azenha
- CIQ-UP, Chemistry and Biochemistry Department, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal;
| | - Teresa Lino-Neto
- Biology Department and CBMA-Centre of Molecular and Environmental Biology, School of Sciences, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (T.L.-N.); (A.C.)
| | - Conceição Santos
- LAQV/REQUIMTE, Laboratory of Integrative Biology and Biotechnology (IB2), Biology Department, Faculty of Sciences of University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal;
| | - Ana Cunha
- Biology Department and CBMA-Centre of Molecular and Environmental Biology, School of Sciences, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (T.L.-N.); (A.C.)
| | - Fernanda Fidalgo
- GreenUPorto-Sustainable Agrifood Production Research Centre & INOV4AGRO, Biology Department, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal; (C.S.); (M.M.); (F.F.)
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Dias MC, Santos C, Araújo M, Barros PM, Oliveira M, de Oliveira JMPF. Quercus suber Roots Activate Antioxidant and Membrane Protective Processes in Response to High Salinity. Plants (Basel) 2022; 11:plants11040557. [PMID: 35214887 PMCID: PMC8875824 DOI: 10.3390/plants11040557] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 02/12/2022] [Accepted: 02/17/2022] [Indexed: 05/27/2023]
Abstract
Cork oak (Quercus suber) is a species native to Mediterranean areas and its adaptation to the increasingly prevalent abiotic stresses, such as soil salinization, remain unknown. In sequence with recent studies on salt stress response in the leaf, it is fundamental to uncover the plasticity of roots directly exposed to high salinity to better understand how Q. suber copes with salt stress. In the present study we aimed to unveil the antioxidants and key-genes involved in the stress-responses (early vs. later responses) of Q. suber roots exposed to high salinity. Two-month-old Q. suber plants were watered with 300 mM NaCl solution and enzymatic and non-enzymatic antioxidants, lipid peroxidation and the relative expression of genes related to stress response were analysed 8 h and 6 days after salt treatment. After an 8 h of exposure, roots activated the expression of QsLTI30 and QsFAD7 genes involved in stress membrane protection, and QsRAV1 and QsCZF1 genes involved in tolerance and adaptation. As a result of the continued salinity stress (6 days), lipid peroxidation increased, which was associated with an upregulation of QsLTI30 gene. Moreover, other protective mechanisms were activated, such as the upregulation of genes related to antioxidant status, QsCSD1 and QsAPX2, and the increase of the antioxidant enzyme activities of superoxide dismutase, catalase, and ascorbate peroxidase, concomitantly with total antioxidant activity and phenols. These data suggest a response dependent on the time of salinity exposure, leading Q. suber roots to adopt protective complementary strategies to deal with salt stress.
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Affiliation(s)
- Maria Celeste Dias
- Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal; (M.C.D.); (M.A.)
| | - Conceição Santos
- LAQV, REQUIMTE, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal;
- IB2 Laboratory, Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal
| | - Márcia Araújo
- Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal; (M.C.D.); (M.A.)
- IB2 Laboratory, Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal
| | - Pedro M. Barros
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Genomics of Plant Stress, Av. da República, 2780-157 Oeiras, Portugal; (P.M.B.); (M.O.)
| | - Margarida Oliveira
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Genomics of Plant Stress, Av. da República, 2780-157 Oeiras, Portugal; (P.M.B.); (M.O.)
| | - José Miguel P. Ferreira de Oliveira
- LAQV, REQUIMTE, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
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Maximiano M, Santos L, Santos C, Aragão F, Dias S, Franco O, Mehta A. Host induced gene silencing of Sclerotinia sclerotiorum effector genes for the control of white mold. Biocatalysis and Agricultural Biotechnology 2022. [DOI: 10.1016/j.bcab.2022.102302] [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]
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Alves M, Simba B, Fernandes M, Elias C, Amarante J, Santos C. Effect of Roughness on Flexural Strength of Dental Lithium-Disilicate. Dent Mater 2022. [DOI: 10.1016/j.dental.2021.12.035] [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: 11/03/2022]
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Baptista I, Gomes F, Vieira S, Ferreira S, Alves M, Santos C, Fernandes M. Functionalization of Restorative Dental Glass-Ceramics with Bactericidal Properties. Dent Mater 2022. [DOI: 10.1016/j.dental.2021.12.040] [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: 11/29/2022]
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Jacob K, Bernardes D, Rosa M, Santos C, Monteiro I, Escolástico A, Coelho M, Jordão J, Fernandez G, Souto C. Acceptance procedure for beam-matched linacs. Phys Med 2021. [DOI: 10.1016/s1120-1797(22)00152-1] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Mendes RJ, Sario S, Luz JP, Tassi N, Teixeira C, Gomes P, Tavares F, Santos C. Evaluation of Three Antimicrobial Peptides Mixtures to Control the Phytopathogen Responsible for Fire Blight Disease. Plants (Basel) 2021; 10:plants10122637. [PMID: 34961108 PMCID: PMC8705937 DOI: 10.3390/plants10122637] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 11/24/2021] [Accepted: 11/25/2021] [Indexed: 05/09/2023]
Abstract
Fire blight is a severe bacterial plant disease that affects important chain-of-value fruit trees such as pear and apple trees. This disease is caused by Erwinia amylovora, a quarantine phytopathogenic bacterium, which, although highly distributed worldwide, still lacks efficient control measures. The green revolution paradigm demands sustainable agriculture practices, for which antimicrobial peptides (AMPs) have recently caught much attention. The goal of this work was to disclose the bioactivity of three peptides mixtures (BP100:RW-BP100, BP100:CA-M, and RW-BP100:CA-M), against three strains of E. amylovora representing distinct genotypes and virulence (LMG 2024, Ea 630 and Ea 680). The three AMPs' mixtures were assayed at eight different equimolar concentrations ranging from 0.25 to 6 μM (1:1). Results showed MIC and MBC values between 2.5 and 4 μM for every AMP mixture and strain. Regarding cell viability, flow cytometry and alamarBlue reduction, showed high reduction (>25%) of viable cells after 30 min of AMP exposure, depending on the peptide mixture and strain assayed. Hypersensitive response in tobacco plants showed that the most efficient AMPs mixtures and concentrations caused low to no reaction of the plant. Altogether, the AMPs mixtures studied are better treatment solutions to control fire blight disease than the same AMPs applied individually.
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Affiliation(s)
- Rafael J. Mendes
- Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal; (S.S.); (C.T.); (P.G.); (F.T.); (C.S.)
- LAQV-REQUIMTE, Biology Department, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
- CITAB—Centre for the Research and Technology of Agro-Environmental and Biological Sciences, University of Trás-os-Montes e Alto Douro, 5000-801 Vila Real, Portugal
- CIBIO—Research Centre in Biodiversity and Genetic Resources, InBIO, Associated Laboratory, Campus Agrário de Vairão, University of Porto, 4485-661 Vairão, Portugal
- Correspondence:
| | - Sara Sario
- Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal; (S.S.); (C.T.); (P.G.); (F.T.); (C.S.)
- LAQV-REQUIMTE, Biology Department, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
- CITAB—Centre for the Research and Technology of Agro-Environmental and Biological Sciences, University of Trás-os-Montes e Alto Douro, 5000-801 Vila Real, Portugal
| | - João Pedro Luz
- QRural, Polytechnic Institute of Castelo Branco, School of Agriculture, 6000-909 Castelo Branco, Portugal;
| | - Natália Tassi
- LAQV-REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal;
| | - Cátia Teixeira
- Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal; (S.S.); (C.T.); (P.G.); (F.T.); (C.S.)
- LAQV-REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal;
| | - Paula Gomes
- Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal; (S.S.); (C.T.); (P.G.); (F.T.); (C.S.)
- LAQV-REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal;
| | - Fernando Tavares
- Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal; (S.S.); (C.T.); (P.G.); (F.T.); (C.S.)
- CIBIO—Research Centre in Biodiversity and Genetic Resources, InBIO, Associated Laboratory, Campus Agrário de Vairão, University of Porto, 4485-661 Vairão, Portugal
| | - Conceição Santos
- Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal; (S.S.); (C.T.); (P.G.); (F.T.); (C.S.)
- LAQV-REQUIMTE, Biology Department, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
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Quaresma MAG, Antunes IC, Ferreira BG, Parada A, Elias A, Barros M, Santos C, Partidário A, Mourato M, Roseiro LC. The composition of the lipid, protein and mineral fractions of quail breast meat obtained from wild and farmed specimens of Common quail (Coturnix coturnix) and farmed Japanese quail (Coturnix japonica domestica). Poult Sci 2021; 101:101505. [PMID: 34818612 PMCID: PMC8626699 DOI: 10.1016/j.psj.2021.101505] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 09/16/2021] [Accepted: 09/22/2021] [Indexed: 11/25/2022] Open
Abstract
The present study was intended to answer 2 scientific hypotheses: 1) the quail species has a significant influence in quail breast meat composition; 2) the wild quail's meat presents healthier composition than their farmed counterparts. An analysis of the pectoral muscles of wild and captive common quails (Coturnix coturnix) and domestic quails (Coturnix japonica domestica) was performed. The content of fatty acids (FA), amino acids, total cholesterol, and vitamin E, some basic macro- and microminerals in the pectoral muscles of the 2 species of the genus Coturnix were analyzed. Regarding the quail species influence on meat composition, Japanese Quail (JQ) revealed better lipid composition, characterized by lower saturated FA (SFA; less 3.17 g/100 g of total fatty acids), higher polyunsaturated FA contents (PUFA; more 5.5 g/100 g of total fatty acids) and healthier polyunsaturated FA/saturated FA (P/S) and n-6/n-3 ratios and TI value (1.08, 9.54 and 0.60 vs. 0.76, 12.58, and 0.75, correspondingly). The absence of differences observed on amino acids partial sums and ratios reveals equality between species on protein nutritional quality. On the other hand, Common Quail (CQ) proved to be a better source of copper (0.181 mg/100 g of meat), iron (2.757 mg/100 g of meat), manganese (0.020 mg/100 g of meat), and zinc (0.093 mg/100 g of meat) than JQ. The comparison of farmed and wild specimens within CQ, showed that wild birds presented lower total cholesterol (less 8.32 mg/g of fresh meat) and total PUFA (less 4.26 g/100 g of total fatty acids), and higher n-3 PUFA contents (more 1.53 g/100 g of total fatty acids), which contributed to healthier P/S and n-6/n-3 ratios, but worst PI (1.60, 8.08, and 113.1 vs. 0.76, 12.58, and 100.8, respectively). The wild species revealed higher α-tocopherol content (2.40 vs. 1.49 µg/g of fresh meat. Differences observed on their mineral composition counterbalance each other. Under intensive production system and similar feeding and management conditions, the CQ develops better nutritional qualities than JQ. The comparison of wild and farmed species within CQ reveals more similarities than differences. Quail´s meat presents good nutritional quality and introduces variability to human's diet, which is much valued by consumers.
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Affiliation(s)
- M A G Quaresma
- CIISA - Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon (FMV/ULisboa), Lisbon, 1300-477 Portugal.
| | - I C Antunes
- CIISA - Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon (FMV/ULisboa), Lisbon, 1300-477 Portugal
| | - B Gil Ferreira
- CIISA - Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon (FMV/ULisboa), Lisbon, 1300-477 Portugal; LEAF - Linking Landscape, Environment, Agriculture and Food, Institute of Agronomy, University of Lisbon, Lisbon, 1349-017 Portugal
| | - A Parada
- CIISA - Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon (FMV/ULisboa), Lisbon, 1300-477 Portugal
| | - A Elias
- LEAF - Linking Landscape, Environment, Agriculture and Food, Institute of Agronomy, University of Lisbon, Lisbon, 1349-017 Portugal
| | - M Barros
- INTERAVES - Sociedade Agro-Pecuária, Abrigada, 2580-067 Portugal
| | - C Santos
- Food Technology and Safety Division, National Institute for Agricultural and Veterinary Research (INIAV, IP), Oeiras, Portugal
| | - A Partidário
- Food Technology and Safety Division, National Institute for Agricultural and Veterinary Research (INIAV, IP), Oeiras, Portugal
| | - M Mourato
- LEAF - Linking Landscape, Environment, Agriculture and Food, Institute of Agronomy, University of Lisbon, Lisbon, 1349-017 Portugal
| | - L C Roseiro
- Food Technology and Safety Division, National Institute for Agricultural and Veterinary Research (INIAV, IP), Oeiras, Portugal
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Miranda CDSC, Bonito J, Oliveira RACD, Guedes JA, Santos C, Oliveira JSDS, Filgueiras TG, Oliveira FDA, Filgueiras TG, Gonçalves NV. Spatial distribution of human visceral leishmaniasis cases in Cametá, Pará, Eastern Amazon, Brazil. Rev Soc Bras Med Trop 2021; 54:e0220. [PMID: 34787286 PMCID: PMC8601242 DOI: 10.1590/0037-8682-0220-2021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 09/03/2021] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION: Human visceral leishmaniasis is considered a major public health problem in the municipality of Cametá, Pará, Brazil. METHODS: This ecological study was conducted using data obtained from official Brazilian agencies. Spatial analysis of the variables was performed using the kernel interpolation technique and the bivariate Global Moran’s Index. RESULTS: The spatial distribution of the disease was not homogeneous, and it was associated with socio-environmental risk factors and public policies. CONCLUSIONS: Different relationships were observed between the variables studied and disease occurrence.
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Affiliation(s)
- Claudia do Socorro Carvalho Miranda
- Universidade do Estado do Pará, Laboratório de Epidemiologia e Geoprocessamento da Amazônia, Belém, PA, Brasil.,Escola Superior da Amazônia, Belém, PA, Brasil
| | - Jorge Bonito
- Universidade de Évora, Escola de Ciências Sociais, Évora, Portugal.,Universidade de Aveiro, Centro de Investigação Didática e Tecnologia na Formação de Formadores, Aveiro, Portugal
| | | | - Juan Andrade Guedes
- Universidade do Estado do Pará, Laboratório de Epidemiologia e Geoprocessamento da Amazônia, Belém, PA, Brasil
| | - Conceição Santos
- Universidade do Porto, Laboratório Associado para Química Verde, Rede de Química e Tecnologia, Porto, Portugal. Universidade de Trás-os-Montes e Alto Douro, Centro de Investigação em Tecnologias Agroambientais e Biológicas da Vila Real, Portugal
| | | | - Tainara Garcia Filgueiras
- Universidade do Estado do Pará, Laboratório de Epidemiologia e Geoprocessamento da Amazônia, Belém, PA, Brasil
| | | | - Tainã Garcia Filgueiras
- Universidade do Estado do Pará, Laboratório de Epidemiologia e Geoprocessamento da Amazônia, Belém, PA, Brasil
| | - Nelson Veiga Gonçalves
- Universidade do Estado do Pará, Laboratório de Epidemiologia e Geoprocessamento da Amazônia, Belém, PA, Brasil.,Universidade do Estado do Pará, Centro de Ciências Biológicas e da Saúde, Departamento de Saúde Comunitária, Belém, PA, Brasil
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Louvion E, Santos C, Samuel D. Rehabilitation after proximal interphalangeal joint replacement: A structured review of the literature. Hand Surg Rehabil 2021; 41:14-21. [PMID: 34619399 DOI: 10.1016/j.hansur.2021.09.007] [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] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 09/07/2021] [Accepted: 09/14/2021] [Indexed: 11/29/2022]
Abstract
Proximal interphalangeal (PIP) joint arthroplasty is an unsolved biomechanical challenge despite advances in materials and new implant designs. This leads to a high rate of complications. Moreover, there is heterogeneity in postoperative management according to the literature. The present structured review examined the therapeutic strategies utilized by physiotherapists to restore a functional finger chain and prevent postoperative complications following PIP joint replacement. Patients undergoing primary total PIP joint arthroplasty of the index, ring, middle or little finger were included. Articles published from 2008 onwards, in French or English, and reporting on PIP joint replacement and postoperative management, were included. Therapeutic strategies were organized according to the surgical approach. Details of splint strategies, mobilization and muscle strengthening and management of postoperative complications were collected. Forty-eight studies, 3 of which provided a description of surgical techniques, were included. In relation to hand function, most authors advocated joint mobilization (n = 45) and some recommended muscle strengthening (n = 4). Static (n = 43) and dynamic splints (n = 14) and buddy taping (n = 12) were frequently recommended to prevent and manage postoperative complications. Few studies (n = 13) reported wound assessment or control of postoperative edema. Precise recommendations concerning therapeutic strategies following PIP joint arthroplasty cannot be made based on available evidence. Specific protocols for rehabilitation following PIP joint replacement need to be clarified in future research.
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Affiliation(s)
- E Louvion
- Institut de formation en Masso-Kinésithérapie de Dijon, 6 Bis Rue de Cromois, 21000 Dijon, France.
| | - C Santos
- Institut de formation en Masso-Kinésithérapie de Dijon, 6 Bis Rue de Cromois, 21000 Dijon, France.
| | - D Samuel
- Faculty of Environmental and Life Sciences, University of Southampton, Southampton SO17 1BJ, United Kingdom.
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Tulinius M, Buccella F, Desguerre I, Kirschner J, Mercuri E, Muntoni F, Osorio AN, Johnson S, Werner C, Kristensen A, Jiang J, Li J, Trifillis P, Santos C, McDonald C. DMD - TREATMENT. Neuromuscul Disord 2021. [DOI: 10.1016/j.nmd.2021.07.169] [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: 11/26/2022]
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Mariz-Ponte N, Dias CM, Silva AMS, Santos C, Silva S. Low levels of TiO 2-nanoparticles interact antagonistically with Al and Pb alleviating their toxicity. Plant Physiol Biochem 2021; 167:1-10. [PMID: 34315106 DOI: 10.1016/j.plaphy.2021.07.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 07/19/2021] [Accepted: 07/20/2021] [Indexed: 06/13/2023]
Abstract
The contamination and bioavailability of deleterious metals in arable soils significantly limits crop development and yield. Aiming at mitigating Pb- and Al-induced phytotoxicity, this work explores the use of P25 titanium dioxide nanoparticles (nTiO2) in soil amendments. For that, Lactuca sativa L. plants were germinated and grown in the presence of 10 ppm Pb or 50 ppm Al, combined or not with 5 ppm nTiO2. Growth parameters, as well as endpoints of the redox state [cell relative membrane permeability (RMP), thiobarbituric acid reactive substances content, total phenolic content and photosynthesis (sugars and pigments levels, chlorophyll a fluorescence and gas exchange), were evaluated. Concerning Al, nTiO2 treatment alleviated the impairments induced in germination rate, seedling length, water content, RMP, stomatal conductance (gs), intercellular CO2 (Ci), and net CO2 assimilation rate (PN). It increased anthocyanins contents and effective efficiency of photosystem II (ΦPSII). In Pb-exposed plants, nTiO2 amendment mitigated the effects in RMP, PN, gs, and Ci. It also increased the pigment contents and the transpiration rate (E) comparatively to the control without nTiO2. These results clearly highlight the high potential of low doses of nTiO2 in alleviating metal phytotoxicity, particularly the one of Pb. Additionally, further research should explore the use of these nanoparticles in agricultural soil amendments.
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Affiliation(s)
- Nuno Mariz-Ponte
- Department of Biology, Faculty of Sciences, LAQV-REQUIMTE, University of Porto, Rua Do Campo Alegre, 4169-007, Porto, Portugal.
| | - Celeste M Dias
- Department of Life Sciences & CFE, Faculty of Sciences and Technologies, University of Coimbra, Calçada Martim de Freitas, 3000-456, Coimbra, Portugal.
| | - Artur M S Silva
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal.
| | - Conceição Santos
- Department of Biology, Faculty of Sciences, LAQV-REQUIMTE, University of Porto, Rua Do Campo Alegre, 4169-007, Porto, Portugal.
| | - Sónia Silva
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal.
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Mercuri E, Muntoni F, Buccella F, Desguerre I, Kirschner J, Osorio AN, Tulinius M, Johnson S, Werner C, Kristensen A, Jiang J, Li J, Trifillis P, Santos C, McDonald C. DMD - TREATMENT. Neuromuscul Disord 2021. [DOI: 10.1016/j.nmd.2021.07.167] [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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Mariz-Ponte N, Mendes RJ, Sario S, Correia CV, Correia CM, Moutinho-Pereira J, Melo P, Dias MC, Santos C. Physiological, Biochemical and Molecular Assessment of UV-A and UV-B Supplementation in Solanum lycopersicum. Plants (Basel) 2021; 10:plants10050918. [PMID: 34063679 PMCID: PMC8147646 DOI: 10.3390/plants10050918] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 04/27/2021] [Accepted: 04/28/2021] [Indexed: 11/16/2022]
Abstract
Daily UV-supplementation during the plant fruiting stage of tomato (Solanum lycopersicum L.) growing indoors may produce fruits with higher nutraceutical value and better acceptance by consumers. However, it is important to ensure that the plant's performance during this stage is not compromised by the UV supplement. We studied the impact of UV-A (1 and 4 h) and UV-B (2 and 5 min) on the photosynthesis of greenhouse-grown tomato plants during the fruiting/ripening stage. After 30 d of daily irradiation, UV-B and UV-A differently interfered with the photosynthesis. UV-B induced few leaf-necrotic spots, and effects are more evidenced in the stimulation of photosynthetic/protective pigments, meaning a structural effect at the Light-Harvesting Complex. UV-A stimulated flowering/fruiting, paralleled with no visible leaf damages, and the impact on photosynthesis was mostly related to functional changes, in a dose-dependent manner. Both UV-A doses decreased the maximum quantum efficiency of photosystem II (Fv/Fm), the effective efficiency of photosystem II (ΦPSII), and gas exchange processes, including net carbon assimilation (PN). Transcripts related to Photosystem II (PSII) and RuBisCO were highly stimulated by UV supplementation (mostly UV-A), but the maintenance of the RuBisCO protein levels indicates that some protein is also degraded. Our data suggest that plants supplemented with UV-A activate adaptative mechanisms (including increased transcription of PSII peptides and RuBisCO), and any negative impacts on photosynthesis do not compromise the final carbohydrate balances and plant yield, thus becoming a profitable tool to improve precision agriculture.
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Affiliation(s)
- Nuno Mariz-Ponte
- Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal; (R.J.M.); (S.S.); (C.V.C.); (P.M.); (C.S.)
- LAQV-REQUIMTE, Faculty of Science, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal
- Correspondence:
| | - Rafael J. Mendes
- Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal; (R.J.M.); (S.S.); (C.V.C.); (P.M.); (C.S.)
- LAQV-REQUIMTE, Faculty of Science, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal
| | - Sara Sario
- Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal; (R.J.M.); (S.S.); (C.V.C.); (P.M.); (C.S.)
- LAQV-REQUIMTE, Faculty of Science, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal
| | - Cristiana V. Correia
- Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal; (R.J.M.); (S.S.); (C.V.C.); (P.M.); (C.S.)
- LAQV-REQUIMTE, Faculty of Science, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal
| | - Carlos M. Correia
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), Department of Biology and Environment, University of Trás-os-Montes e Alto Douro, 5001-801 Vila Real, Portugal; (C.M.C.); (J.M.-P.)
| | - José Moutinho-Pereira
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), Department of Biology and Environment, University of Trás-os-Montes e Alto Douro, 5001-801 Vila Real, Portugal; (C.M.C.); (J.M.-P.)
| | - Paula Melo
- Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal; (R.J.M.); (S.S.); (C.V.C.); (P.M.); (C.S.)
| | - Maria Celeste Dias
- Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal;
| | - Conceição Santos
- Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal; (R.J.M.); (S.S.); (C.V.C.); (P.M.); (C.S.)
- LAQV-REQUIMTE, Faculty of Science, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal
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Dias MC, Pinto DCGA, Figueiredo C, Santos C, Silva AMS. Phenolic and lipophilic metabolite adjustments in Olea europaea (olive) trees during drought stress and recovery. Phytochemistry 2021; 185:112695. [PMID: 33581598 DOI: 10.1016/j.phytochem.2021.112695] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [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: 11/16/2020] [Revised: 01/30/2021] [Accepted: 02/01/2021] [Indexed: 06/12/2023]
Abstract
The frequency of combined stress events is increasing due to climate change and represents a new threat to olive (Olea europaea) culture. How olive plants modulate their profile of metabolites under multiple stressing agents remains to unveil, although several metabolites affect plants' resilience, and olive production and quality. Young olive plants were exposed to a water deficit (WD) for 30 days and then exposed to a shock of heat and high UVB-radiation (WDHS+UVB treatment) for 2 days. Then, plants were re-watered and grown under optimal conditions (recovery) for 30 days. Leaves were collected after stress and recovery, analysed by liquid and gas chromatography, and the lipophilic and phenolic profiles were characterized. Except for the oleuropein derivatives, the qualitative metabolite profile was similar during stress and recovery. Metabolite increases or decreases in response to stress were stronger when WD was followed by WDHS+UVB treatment. Phenolic compounds (luteolin-7-O-glucoside, quercetin-3-O-rutinoside, apigenin-7-O-glucoside, chrysoeriol-7-O-glucoside, kaempferol derivatives, oleuropein, and lucidumoside C) were the most involved after WD and WDHS+UVB, possibly acting as reactive oxygen species (ROS) scavengers. Lipophilic compounds were more relevant during the recovery period. The catabolism of fatty acids and carbohydrates may provide the necessary energy for plant performance reestablishment, and sterols, long-chain alkanes, and terpenes metabolic pathways may be shifted for the production of compounds with a more important stress protection role. This work highlights for the first time that tolerance mechanisms activated by WD in olive plants are related to metabolite changes, that are adjusted when other stressors are overlapped (WDHS+UVB), and also help the plants recover. This metabolites' plasticity represents an essential contribution to understanding how dry-farming olive orchards may deal with drought combined with high UV-B or heat.
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Affiliation(s)
- Maria Celeste Dias
- University of Coimbra, Centre for Functional Ecology, Department of Life Sciences, Calçada Martim de Freitas, 3000-456, Coimbra, Portugal; LAQV/REQUIMTE,Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal.
| | - Diana C G A Pinto
- LAQV/REQUIMTE,Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
| | - Catarina Figueiredo
- LAQV/REQUIMTE,Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
| | - Conceição Santos
- IB2, Department of Biology & LAQV/REQUIMTE, Faculty of Sciences, University of Porto, Rua Do Campo Alegre, 4169-007, Porto, Portugal
| | - Artur M S Silva
- LAQV/REQUIMTE,Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
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Mendes RJ, Luz JP, Santos C, Tavares F. CRISPR genotyping as complementary tool for epidemiological surveillance of Erwinia amylovora outbreaks. PLoS One 2021; 16:e0250280. [PMID: 33861806 PMCID: PMC8051791 DOI: 10.1371/journal.pone.0250280] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 04/02/2021] [Indexed: 12/12/2022] Open
Abstract
Fire blight is a destructive plant disease caused by Erwinia amylovora affecting pome fruit trees, and responsible for large yield declines, long phytosanitary confinements, and high economic losses. In Portugal, the first major fire blight outbreaks occurred in 2010 and 2011, and although later considered eradicated, the emergence of other outbreaks in recent years stressed the need to characterize the E. amylovora populations associated with these outbreaks. In this regard, CRISPR genotyping, assessment of three virulence markers, and semi-quantitative virulence bioassays, were carried out to determine the genotype, and assess the virulence of thirty-six E. amylovora isolates associated with outbreaks occurring between 2010 and 2017 and affecting apple and pear orchards located in the country central-west, known as the main producing region of pome fruits in Portugal. The data gathered reveal that 35 E. amylovora isolates belong to one of the widely-distributed CRISPR genotypes (5-24-38 / D-a-α) regardless the host species, year and region. Ea 680 was the single isolate revealing a new CRISPR genotype due to a novel CR2 spacer located closer to the leader sequence and therefore thought to be recently acquired. Regarding pathogenicity, although dot-blot hybridization assays showed the presence of key virulence factors, namely hrpL (T3SS), hrpN (T3E) and amsG from the amylovoran biosynthesis operon in all E. amylovora isolates studied, pathogenicity bioassays on immature pear slices allowed to distinguish four virulence levels, with most of the isolates revealing an intermediate to severe virulence phenotype. Regardless the clonal population structure of the E. amylovora associated to the outbreaks occurring in Portugal between 2010 and 2017, the different virulence phenotypes, suggests that E. amylovora may have been introduced at different instances into the country. This is the first study regarding E. amylovora in Portugal, and it discloses a novel CRISPR genotype for this bacterium.
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Affiliation(s)
- Rafael J. Mendes
- Faculty of Sciences of University of Porto, Porto, Portugal
- LAQV/REQUIMTE, Faculty of Sciences of University of Porto, Porto, Portugal
- CITAB—Centre for the Research and Technology of Agro-Environmental and Biological Sciences, University of Trás-os-Montes e Alto Douro, Vila Real, Portugal
- CIBIO–Research Centre in Biodiversity and Genetic Resources, InBIO, Associated Laboratory, University of Porto, Campus Agrário de Vairão, Vairão, Portugal
| | - João Pedro Luz
- QRural, Polytechnic Institute of Castelo Branco, School of Agriculture, Castelo Branco, Portugal
| | - Conceição Santos
- Faculty of Sciences of University of Porto, Porto, Portugal
- LAQV/REQUIMTE, Faculty of Sciences of University of Porto, Porto, Portugal
| | - Fernando Tavares
- Faculty of Sciences of University of Porto, Porto, Portugal
- CIBIO–Research Centre in Biodiversity and Genetic Resources, InBIO, Associated Laboratory, University of Porto, Campus Agrário de Vairão, Vairão, Portugal
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Sario S, Santos C, Gonçalves F, Torres L. DNA screening of Drosophila suzukii predators in berry field orchards shows new predatory taxonomical groups. PLoS One 2021; 16:e0249673. [PMID: 33831041 PMCID: PMC8031375 DOI: 10.1371/journal.pone.0249673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 03/22/2021] [Indexed: 11/19/2022] Open
Abstract
Drosophila suzukii (spotted wing drosophila, SWD) is a pandemic quarantine pest that attacks mostly red fruits. The high number of life cycles per year, its ability to rapidly invade and spread across new habitats, and highly polyphagous nature, makes this a particularly aggressive invasive species, for which efficient control methods are currently lacking. The use of native natural predators is particularly promising to anchor sustainable and efficient measures to control SWD. While several field studies have suggested the presence of potential predatory species in infested orchards, only a few confirmed the presence of SWD DNA in predators' gut content. Here, we use a DNA-based approach to identify SWD predators among the arthropod diversity in South Europe, by examining the gut content of potential predator specimens collected in SWD-infested berry fields in North Portugal. These specimens were morphologically identified to the family/order, and their gut content was screened for the presence of SWD DNA using PCR. New SWD predatory taxonomical groups were identified, as Opiliones and Hemerobiidae, in addition to known SWD predators, such as Hemerobiidae, Chrysopidae, Miridae, Carabidae, Formicidae and Araneae. Additionally, the presence of a spider family, Uloboridae, in the orchards was recorded for the first time, posing this family as another SWD-candidate predator. This study sets important bases to further investigate the potential large-scale use of some of these confirmed predator taxa for SWD control in South Europe.
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Affiliation(s)
- Sara Sario
- Faculty of Sciences of University of Porto (FCUP), iB2Lab, Department of Biology, Rua do Campo Alegre, Porto, Portugal
- LAQV/REQUIMTE, University of Porto, Porto, Portugal
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro (UTAD), Quinta de Prados, Vila Real, Portugal
| | - Conceição Santos
- Faculty of Sciences of University of Porto (FCUP), iB2Lab, Department of Biology, Rua do Campo Alegre, Porto, Portugal
- LAQV/REQUIMTE, University of Porto, Porto, Portugal
| | - Fátima Gonçalves
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro (UTAD), Quinta de Prados, Vila Real, Portugal
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Bragança, Portugal
| | - Laura Torres
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro (UTAD), Quinta de Prados, Vila Real, Portugal
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Turato E, Santos C, Rodrigues J, Bispo A, Lima C. The practice of sedation in palliative care for oncologic patients: Fantasies reported by a nursing team in a specialized hospital in Brazil: A qualitative study. Eur Psychiatry 2021. [PMCID: PMC9480375 DOI: 10.1192/j.eurpsy.2021.1977] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction CONTEXTUALIZATION: Palliative sedation is a resource used to control symptoms of terminal patients in general. It is considered that it should be discussed by the professionals involved in the process, based on the competence of each one, as well as with family members and patients when possible. Objectives AIM: To understand symbolic meanings attributed by nursing professionals who provide assistance to the terminal patient regarding to the act of the palliative sedation. Methods Strategies: Clinical-qualitative design, semi-directed interview of open questions in depth. Nine oncologist nurses participated in the study; sample closed by the criterion of theoretical information saturation. Interviews were audio recorded, transcribed fully, categorized by qualitative content analysis. The results were discussed by colleagues of the Laboratory of Clinical Qualitative Research at the University of Campinas. Results FINDINGS: The treatment of the data led to 6 emerging categories: (1) death maintains its ambivalent values in our culture; (2) serving the death symbolically on a tray; (3) the act of sedation and its “unfortunate coincidences”; (4) palliative sedation: agent of a pious death; (5) late sedation: cause for distress to the professional; (6) the professional’s self-comfort considering certain psychological strength from the patient and family. Conclusions Final considerations: palliative sedation takes a general and individual meanings for the professional and even in case of experienced professionals regard to palliative sedation, the death phenomenon conduct them to expresses multiple and peculiar emotional issues, not ever perceveid. Disclosure No significant relationships.
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Turato E, Bispo A, Rodrigues J, Santos C, Lima C. Implementation of balint group for a team who care patients with head and neck cancer in a service in Brazil: A proposal post qualitative research. Eur Psychiatry 2021. [PMCID: PMC9480131 DOI: 10.1192/j.eurpsy.2021.1723] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Introduction The Balint group emerged at the Tavistock Clinic in London in the early 1950s. Its creator was a doctor and psychoanalyst Michael Balint. It consisted of a group process, with meetings among general practitioners, in which non-conscious aspects of the professional-patient relationship were approached. We present how a proposal for implementation of a Balint Group has emerged, specifically for physicians and nurses who care for cancer patients. Is is a consequence of results obtained from a qualitative study conducted by a student of the professional master’s degree linked to a Clinical Oncology. Objectives To present a technical product, as required in a Brazilian professional master’s degree, as a result of research that studied reports of doctors and nurses who deal with usual difficulties of handling patients with HNC. Methods The group work is triggered by the report of a case brought by a participant, presenting a problem-situation in the management of his patient. The meeting leader seeks to understand the reactions reported by the presenter in the light of a psychodynamic approach. Results Expected results: the holding of a Balint group, perhaps monthly, in charge of a colleague who has knowledge in applied psychoanalysis, will allow insights to the participants who will bring them conditions to perceive “neurotic elements” in the relationship with their patient. Conclusions Final consideration: having accumulated decades of positive experience, Balint Groups must remain as an updated proposal for the work on emotional issues of professional teams, with emphasis on clinical services with the management of so-called “difficult patients”. Disclosure No significant relationships.
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Araújo M, Prada J, Mariz-Ponte N, Santos C, Pereira JA, Pinto DCGA, Silva AMS, Dias MC. Antioxidant Adjustments of Olive Trees ( Olea Europaea) under Field Stress Conditions. Plants (Basel) 2021; 10:plants10040684. [PMID: 33916326 PMCID: PMC8066335 DOI: 10.3390/plants10040684] [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] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 03/25/2021] [Accepted: 03/30/2021] [Indexed: 02/04/2023]
Abstract
Extreme climate events are increasingly frequent, and the 2017 summer was particularly critical in the Mediterranean region. Olive is one of the most important species of this region, and these climatic events represent a threat to this culture. However, it remains unclear how olive trees adjust the antioxidant enzymatic system and modulate the metabolite profile under field stress conditions. Leaves from two distinct adjacent areas of an olive orchard, one dry and the other hydrated, were harvested. Tree water status, oxidative stress, antioxidant enzymes, and phenolic and lipophilic metabolite profiles were analyzed. The environmental conditions of the 2017 summer caused a water deficit in olive trees of the dry area, and this low leaf water availability was correlated with the reduction of long-chain alkanes and fatty acids. Hydrogen peroxide (H2O2) and superoxide radical (O2•–) levels increased in the trees collected from the dry area, but lipid peroxidation did not augment. The antioxidant response was predominantly marked by guaiacol peroxidase (GPOX) activity that regulates the H2O2 harmful effect and by the action of flavonoids (luteolin-7-O-glucuronide) that may act as reactive oxygen species scavengers. Secoiridoids adjustments may also contribute to stress regulation. This work highlights for the first time the protective role of some metabolite in olive trees under field drought conditions.
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Affiliation(s)
- Márcia Araújo
- Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal;
- Integrated Biology and Biotechnology Laboratory, LAQV-REQUIMTE, Department of Biology, Faculty of Sciences, University of Porto, Rua Campo Alegre, 4169-007 Porto, Portugal; (J.P.); (N.M.-P.); (C.S.)
- Center for the Research and Technology of Agro-Environmental and Biological Sciences, University of Trás-os-Montes and Alto Douro, 5001-801 Vila Real, Portugal
| | - João Prada
- Integrated Biology and Biotechnology Laboratory, LAQV-REQUIMTE, Department of Biology, Faculty of Sciences, University of Porto, Rua Campo Alegre, 4169-007 Porto, Portugal; (J.P.); (N.M.-P.); (C.S.)
| | - Nuno Mariz-Ponte
- Integrated Biology and Biotechnology Laboratory, LAQV-REQUIMTE, Department of Biology, Faculty of Sciences, University of Porto, Rua Campo Alegre, 4169-007 Porto, Portugal; (J.P.); (N.M.-P.); (C.S.)
| | - Conceição Santos
- Integrated Biology and Biotechnology Laboratory, LAQV-REQUIMTE, Department of Biology, Faculty of Sciences, University of Porto, Rua Campo Alegre, 4169-007 Porto, Portugal; (J.P.); (N.M.-P.); (C.S.)
| | - José Alberto Pereira
- Centro de Investigação de Montanha (CIMO), ESA, Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal;
| | - Diana C. G. A. Pinto
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal; (D.C.G.A.P.); (A.M.S.S.)
| | - Artur M. S. Silva
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal; (D.C.G.A.P.); (A.M.S.S.)
| | - Maria Celeste Dias
- Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal;
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal; (D.C.G.A.P.); (A.M.S.S.)
- Correspondence: ; Tel.: +351-239-240-752
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Quintão A, Santos C, Urzal M, Donas-Boto I, Azevedo F, Lemos M, Coelho F, Vian J. Why does transcultural consultation matter? Eur Psychiatry 2021. [PMCID: PMC9480339 DOI: 10.1192/j.eurpsy.2021.1812] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Introduction Psychiatrists should be aware of the new challenges and needs that globalization poses. Objectives To highlight the need for a culturally sensitive approach to mental health. Methods Non-systematic review of “cultural consultation” on PubMed. Results Most people assume a direct connection between pathophysiology and clinical symptoms. However, evidence shows that the translation of pathophysiology and psychopathology into specific symptoms is mediated by cognitive processes and social interactions, which reflect models/practices specific to our culture. Patients focus on specific aspects of being sick, reinforced by cultural narratives or to fit expectations. Thus, people from different cultural backgrounds might have trouble communicating; cultural idioms of distress can be misinterpreted. The role of structural violence bestowed upon cultural minorities, which leads to discrimination and social exclusion, has extensively been studied as a risk factor for mental illness. Furthermore, ignoring cultural differences and diversity has been shown to contribute to healthcare disparities, hampering access to care and diminishing the quality of care received. In Canada, the Cultural Consultation Model provides cultural expertise, either by evaluating patients (preferably accompanied by the referring doctor, a translator and cultural mediator) for 1-3 sessions, providing recommendations to the referring doctor; or providing consulting to a referring doctor or organisation, through general guidance or discussion of specific cases. Conclusions In an evergrowing globalization process, we will inevitably have more contact with patients from culturally distinct backgrounds. To provide the best care, we must be aware of the ways in which culture can shape symptom expression, and take into account cultural explanations and preferences. Disclosure No significant relationships.
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Andrade F, Guedes R, Santos C. Dementia and suicide: What relationship to establish and what risks to consider? Eur Psychiatry 2021. [PMCID: PMC9475794 DOI: 10.1192/j.eurpsy.2021.1130] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Introduction Given the marked population aging in the world, the incidence of dementia has significantly increased, becoming a growing health care problem. Suicide is a considerable health issue throughout the life span, being prevalent in older adults, and in many countries the highest suicide rates are found in the elderly. Thus far, the relationship between dementia and suicide remains poorly understood and inconsistent. Objectives The aim of this study is to do a non-systematic review of the current literature regarding the association between suicide risk and dementia. Methods We conducted a research using the Medline database, through the Pubmed search engine, using the following key-words: “dementia”, “suicide” and “risk factors”. Results Overall, the risk of suicide in people with dementia appears to be the same as that of age-matched general population. However, studies point to the existence of a number of factors that can increase this risk, such as: early age of dementia diagnosis, recent diagnosis, disease awareness and depression, hopelessness, male gender, failure to respond to anti-dementia medication, history of inpatient psychiatric hospitalizations, concurrent medical comorbidities. Conclusions Studies have reported mixed results as to whether dementia itself is an independent risk factor for suicide. Despite these findings, understanding the risk factors for suicide among people with dementia is crucial and suicide prevention efforts should be carried out in this population.
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Gomes R, Santos C, Moutinho F. What is the best approach for patients with prolonged duration of untreated psychosis (DUP) - about 2 clinical cases with dup longer than 10 years. Eur Psychiatry 2021. [PMCID: PMC9476101 DOI: 10.1192/j.eurpsy.2021.1443] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
IntroductionStudies have consistently found that many individuals with psychosis experience significant delays before receiving treatment. DUP refers to the period between the emergence of psychotic symptoms and the initiation of appropriate clinical treatment.ObjectivesTo review current knowledge on the best approach for patients with schizophrenia (SCZ) and prolonged DUP.MethodsNon-systematic review of literature through search on PubMed database, following the terms “DUP and treatment” and “impact of longer DUP”. Two clinical cases are described.ResultsThe clinical cases describe patients with SCZ with DUPs older than 10 years, in whom we could not achieve complete clinical remission after several therapeutic trials and whose prognosis was admitted as reserved. Longer DUP is an independent predictor of poorer outcome in SCZ, including the poor response to treatment and difficulty in achieving remission, predicting treatment resistance. Identifying treatment-resistant patients is crucial due to the importance of initiating clozapine as early as possible since the chances of responding are higher.ConclusionsDUP is a key prognostic variable in psychosis, revealing the significance of early treatment. Patients with long DUP should be regarded as at high risk of poor recovery. The detection of these patients enables clinicians to avoid unnecessary exposure to ineffective treatments while effective interventions are delayed. However, in view of adverse side effects of clozapine, future studies need to examine relevant predictors to detect accurately non-responders. We also suggest further studies to understand if there is correspondence between DUP and different stages of the disease that justify these results.
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Khan SF, Martinez DA, Kalantar DH, Kirkwood RK, Santos C, Ose NA, Johnson S, Alessi DA, Prantil MA, Woods DT, Glendinning SG, Tommasini R, Mackinnon AJ, Prisbrey ST, Dittrich TR, Bowers MW, Cabral J, Crane J, Di Nicola JM, Hamamoto M, Herriot S, Lanier T, Lowe-Webb R, Pelz LJ, Widmayer CC, Williams W, Yang S. A dual high-energy radiography platform with 15 μm resolution at the National Ignition Facility. Rev Sci Instrum 2021; 92:043712. [PMID: 34243490 DOI: 10.1063/5.0044043] [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] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 03/22/2021] [Indexed: 06/13/2023]
Abstract
To study matter at extreme densities and pressures, we need mega laser facilities such as the National Ignition Facility as well as creative methods to make observations during timescales of a billionth of a second. To facilitate this, we developed a platform and diagnostic to characterize a new point-projection radiography configuration using two micro-wires irradiated by a short pulse laser system that provides a large field of view with up to 3.6 ns separation between images. We used tungsten-carbide solid spheres as reference objects and inferred characteristics of the back-lighter source using a forward-fitting algorithm. The resolution of the system is inferred to be 15 μm (using 12.5 μm diameter wires). The bremsstrahlung temperature of the source is 70-300 keV, depending on laser energy and coupling efficiency. By adding the images recorded on multiple stacked image plates, the signal-to-noise of the system is nearly doubled. The imaging characterization technique described here can be adapted to most point-projection platforms where the resolution, spectral contrast, and signal-to-noise are important.
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Affiliation(s)
- S F Khan
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - D A Martinez
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - D H Kalantar
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - R K Kirkwood
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - C Santos
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - N A Ose
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - S Johnson
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - D A Alessi
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - M A Prantil
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - D T Woods
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - S G Glendinning
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - R Tommasini
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - A J Mackinnon
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - S T Prisbrey
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - T R Dittrich
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - M W Bowers
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - J Cabral
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - J Crane
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - J-M Di Nicola
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - M Hamamoto
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - S Herriot
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - T Lanier
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - R Lowe-Webb
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - L J Pelz
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - C C Widmayer
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - W Williams
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - S Yang
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
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Mariz-Ponte N, Regalado L, Gimranov E, Tassi N, Moura L, Gomes P, Tavares F, Santos C, Teixeira C. A Synergic Potential of Antimicrobial Peptides against Pseudomonas syringae pv. actinidiae. Molecules 2021; 26:molecules26051461. [PMID: 33800273 PMCID: PMC7962642 DOI: 10.3390/molecules26051461] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 02/22/2021] [Accepted: 03/03/2021] [Indexed: 12/20/2022] Open
Abstract
Pseudomonas syringae pv. actinidiae (Psa) is the pathogenic agent responsible for the bacterial canker of kiwifruit (BCK) leading to major losses in kiwifruit productions. No effective treatments and measures have yet been found to control this disease. Despite antimicrobial peptides (AMPs) having been successfully used for the control of several pathogenic bacteria, few studies have focused on the use of AMPs against Psa. In this study, the potential of six AMPs (BP100, RW-BP100, CA-M, 3.1, D4E1, and Dhvar-5) to control Psa was investigated. The minimal inhibitory and bactericidal concentrations (MIC and MBC) were determined and membrane damaging capacity was evaluated by flow cytometry analysis. Among the tested AMPs, the higher inhibitory and bactericidal capacity was observed for BP100 and CA-M with MIC of 3.4 and 3.4-6.2 µM, respectively and MBC 3.4-10 µM for both. Flow cytometry assays suggested a faster membrane permeation for peptide 3.1, in comparison with the other AMPs studied. Peptide mixtures were also tested, disclosing the high efficiency of BP100:3.1 at low concentration to reduce Psa viability. These results highlight the potential interest of AMP mixtures against Psa, and 3.1 as an antimicrobial molecule that can improve other treatments in synergic action.
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Affiliation(s)
- Nuno Mariz-Ponte
- Biology Department, Faculty of Science, University of Porto (FCUP), 4169-007 Porto, Portugal; (L.R.); (E.G.); (F.T.); (C.S.)
- LAQV-REQUIMTE, Biology Department, Faculty of Science (FCUP), University of Porto, 4169-007 Porto, Portugal
- CIBIO—Research Centre in Biodiversity and Genetic Resources, In-BIO-Associate Laboratory, Microbial Diversity and Evolution Group, University of Porto (UP), 4485-661 Vairão, Portugal
- Correspondence:
| | - Laura Regalado
- Biology Department, Faculty of Science, University of Porto (FCUP), 4169-007 Porto, Portugal; (L.R.); (E.G.); (F.T.); (C.S.)
- LAQV-REQUIMTE, Biology Department, Faculty of Science (FCUP), University of Porto, 4169-007 Porto, Portugal
| | - Emil Gimranov
- Biology Department, Faculty of Science, University of Porto (FCUP), 4169-007 Porto, Portugal; (L.R.); (E.G.); (F.T.); (C.S.)
- LAQV-REQUIMTE, Biology Department, Faculty of Science (FCUP), University of Porto, 4169-007 Porto, Portugal
| | - Natália Tassi
- LAQV-REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences (FCUP), University of Porto, 4169-007 Porto, Portugal; (N.T.); (P.G.); (C.T.)
| | - Luísa Moura
- CISAS—Centre for Research and Development in Agrifood Systems and Sustainability, Instituto Politécnico de Viana do Castelo, 4900-347 Viana do Castelo, Portugal;
| | - Paula Gomes
- LAQV-REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences (FCUP), University of Porto, 4169-007 Porto, Portugal; (N.T.); (P.G.); (C.T.)
| | - Fernando Tavares
- Biology Department, Faculty of Science, University of Porto (FCUP), 4169-007 Porto, Portugal; (L.R.); (E.G.); (F.T.); (C.S.)
- CIBIO—Research Centre in Biodiversity and Genetic Resources, In-BIO-Associate Laboratory, Microbial Diversity and Evolution Group, University of Porto (UP), 4485-661 Vairão, Portugal
| | - Conceição Santos
- Biology Department, Faculty of Science, University of Porto (FCUP), 4169-007 Porto, Portugal; (L.R.); (E.G.); (F.T.); (C.S.)
- LAQV-REQUIMTE, Biology Department, Faculty of Science (FCUP), University of Porto, 4169-007 Porto, Portugal
| | - Cátia Teixeira
- LAQV-REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences (FCUP), University of Porto, 4169-007 Porto, Portugal; (N.T.); (P.G.); (C.T.)
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