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Han J, Keedy S, de Wit H. Stimulant-like subjective effects of alcohol are not related to resting-state connectivity in healthy men. Cereb Cortex 2023; 33:9478-9488. [PMID: 37339883 PMCID: PMC10656944 DOI: 10.1093/cercor/bhad218] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 06/01/2023] [Accepted: 06/02/2023] [Indexed: 06/22/2023] Open
Abstract
Individual differences in subjective, stimulant-like effects of alcohol are associated with the risk of developing alcohol use disorder. Specifically, individuals who experience more pronounced stimulant-like effects from alcohol are more likely to continue and escalate their usage. The neural basis for these individual differences in subjective response is not yet known. Using a within-subject design, 27 healthy male social drinkers completed three fMRI scans after ingesting a placebo, 0.4 and 0.8 g/kg alcohol, in a randomized order under double-blind conditions. Subjective stimulant effects of alcohol were assessed at regular intervals during each session. Seed-based and regional homogeneity analyses were conducted to evaluate changes in resting-state functional connectivity in relation to the stimulant effect of alcohol. Results indicated that 0.4 g/kg alcohol increased the connectivity to thalamus, and 0.8 g/kg alcohol decreased the connectivity to ventral anterior insula, primarily from the superior parietal lobule. Both doses reduced regional homogeneity in the superior parietal lobule but without an exact overlap with clusters showing connectivity changes in the seed-based analyses. The self-reported stimulant effect of alcohol was not significantly related to changes in seed-based connectivity or regional homogeneity. These findings suggest that alcohol-induced stimulation effects are not related to these indices of neural activity.
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Affiliation(s)
- Jiaxu Han
- Department of Psychiatry and Behavioral Neuroscience, University of Chicago, 5841 S Maryland Ave, Chicago, IL 60637, United States
| | - Sarah Keedy
- Department of Psychiatry and Behavioral Neuroscience, University of Chicago, 5841 S Maryland Ave, Chicago, IL 60637, United States
| | - Harriet de Wit
- Department of Psychiatry and Behavioral Neuroscience, University of Chicago, 5841 S Maryland Ave, Chicago, IL 60637, United States
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Oliveira SL, Crusciol CAC, Rodrigues VA, Galeriani TM, Portugal JR, Bossolani JW, Moretti LG, Calonego JC, Cantarella H. Molybdenum Foliar Fertilization Improves Photosynthetic Metabolism and Grain Yields of Field-Grown Soybean and Maize. Front Plant Sci 2022; 13:887682. [PMID: 35720532 PMCID: PMC9199428 DOI: 10.3389/fpls.2022.887682] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 04/29/2022] [Indexed: 06/02/2023]
Abstract
Foliar fertilization has been used as a supplemental strategy to plant nutrition especially in crops with high yield potential. Applying nutrients in small doses stimulates photosynthesis and increases yield performance. The aim of this study was to evaluate the efficiency of foliar application of molybdenum (Mo) to soybean and maize. The treatments consisted of the presence (+Mo) and absence (-Mo) of supplementation. Plant nutritional status, nitrate reductase (NR) activity, gas exchange parameters, photosynthetic enzyme activity (Rubisco in soybean and maize and PEPcase in maize), total soluble sugar concentration, leaf protein content, shoot dry matter, shoot nitrogen accumulated, number of grains per plant, mass of 100 grains, and grain yield were evaluated. For soybean and maize, application of Mo increased leaf NR activity, nitrogen and protein content, Rubisco activity, net photosynthesis, and grain yield. These results indicate that foliar fertilization with Mo can efficiently enhance nitrogen metabolism and the plant’s response to carbon fixation, resulting in improved crop yields.
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Affiliation(s)
- Sirlene Lopes Oliveira
- Department of Crop Science, College of Agricultural Sciences, São Paulo State University, Botucatu, Brazil
| | | | - Vitor Alves Rodrigues
- Department of Crop Science, College of Agricultural Sciences, São Paulo State University, Botucatu, Brazil
| | - Tatiani Mayara Galeriani
- Department of Crop Science, College of Agricultural Sciences, São Paulo State University, Botucatu, Brazil
| | - José Roberto Portugal
- Department of Crop Science, College of Agricultural Sciences, São Paulo State University, Botucatu, Brazil
| | - João William Bossolani
- Department of Crop Science, College of Agricultural Sciences, São Paulo State University, Botucatu, Brazil
| | - Luiz Gustavo Moretti
- Department of Crop Science, College of Agricultural Sciences, São Paulo State University, Botucatu, Brazil
| | - Juliano Carlos Calonego
- Department of Crop Science, College of Agricultural Sciences, São Paulo State University, Botucatu, Brazil
| | - Heitor Cantarella
- Soils and Environmental Resources Center, Agronomic Institute of Campinas (IAC), Campinas, Brazil
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