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Malheiros J, Simões DM, Antunes PE, Figueirinha A, Cotrim MD, Fonseca DA. Vascular effects of Fragaria vesca L. in human arteries. Nat Prod Res 2023; 37:3851-3856. [PMID: 36448418 DOI: 10.1080/14786419.2022.2152448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 11/15/2022] [Accepted: 11/21/2022] [Indexed: 12/03/2022]
Abstract
Fragaria vesca L. (wild strawberry) is traditionally used for its anti-inflammatory activity and for gastrointestinal, cardiovascular and urinary disorders. A previous study with the rat aorta showed that its leaves extract elicits endothelium-dependent vasorelaxation. Our aim was to investigate the clinical application of Fragaria vesca in vascular disease, by assessing the vascular effects of an infusion and hydroalcoholic extract in internal thoracic arteries from patients with coronary artery disease. The extracts elicited no effects on basal vascular tone and did not induce any vasorelaxation. At low concentration (0.02 mg/mL), the infusion potentiated the noradrenaline-induced contraction, while the other concentrations did not elicit significant changes in efficacy or potency. Differences between our findings and the previous report on rat aorta may result from methodological differences, e.g. vascular bed, method of extraction and extract composition. The clinical applicability of extracts of Fragaria vesca in patients with cardiovascular disease remains to be fully validated.
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Affiliation(s)
- Jéssica Malheiros
- Laboratory of Pharmacology and Pharmaceutical Care, Faculty of Pharmacy, University of Coimbra, Coimbra, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- CIBB Center for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal
| | - Daniela M Simões
- Laboratory of Pharmacology and Pharmaceutical Care, Faculty of Pharmacy, University of Coimbra, Coimbra, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- CIBB Center for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal
| | - Pedro E Antunes
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Centre of Cardiothoracic Surgery, University Hospital and Faculty of Medicine of Coimbra, Coimbra, Portugal
- Clinical Academic Centre of Coimbra, CACC, Coimbra, Portugal
| | - Artur Figueirinha
- Laboratory of Pharmacognosy, Faculty of Pharmacy, University of Coimbra, Coimbra, Portugal
- LAQV, REQUIMTE, Faculty of Pharmacy of University of Coimbra, University of Coimbra, Portugal
| | - Maria Dulce Cotrim
- Laboratory of Pharmacology and Pharmaceutical Care, Faculty of Pharmacy, University of Coimbra, Coimbra, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- CIBB Center for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal
| | - Diogo A Fonseca
- Laboratory of Pharmacology and Pharmaceutical Care, Faculty of Pharmacy, University of Coimbra, Coimbra, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- CIBB Center for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal
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Kostelnik CJ, Gale MK, Crouse KJ, Shazly T, Eberth JF. Acute Mechanical Consequences of Vessel-Specific Coronary Bypass Combinations. Cardiovasc Eng Technol 2023; 14:404-418. [PMID: 36828977 DOI: 10.1007/s13239-023-00661-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 02/06/2023] [Indexed: 02/26/2023]
Abstract
PURPOSE Premature coronary artery bypass graft (CABG) failure has been linked to geometric, mechanical, and compositional discrepancies between host and graft tissues. Acute hemodynamic disturbances and the introduction of wall stress gradients trigger a myriad of mechanobiological processes at the anastomosis that can be associated with restenosis and graft failure. Although the origins of coronary artery disease dictate the anastomotic target, an opportunity exists for graft-vessel optimization through rationale graft selection. METHODS Here we explored the four distinct regions of the left (L) and right (R) ITA (1 = proximal, 2 = submuscular, 3 = middle, 4 = distal), and four common target vessels in the coronary circulation including the proximal and distal left anterior descending (PLAD & DLAD), right coronary (RCA), and left circumflex (LCX) arteries. Benchtop biaxial mechanical data was used to acquire constitutive model parameters of these tissues and enable vessel-specific computational models to elucidate the mechanical consequences of 32 unique graft-target combinations. RESULTS Simulations revealed the maximum principal wall stresses for the PLAD, RCA, and LCX occurred when anastomosed with LITA1, and the maximum flow-induced shear stress occurred with LITA4. The DLAD, on the other hand, reached stress maximums when anastomosed to LITA4. Using a normalized objective function of simulation output variables, we found LITA2 to be the best graft choice for both LADs, RITA3 for the RCA, and LITA3 for the LCX. CONCLUSION Although mechanical compatibility is just one of many factors determining bypass graft outcomes, our data suggests improvements can be made to the grafting process through vessel-specific regional optimization.
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Affiliation(s)
- Colton J Kostelnik
- Biomedical Engineering Program, University of South Carolina, Columbia, SC, USA
| | - Mary K Gale
- Biomedical Engineering Department, Georgia Institute of Technology, Atlanta, GA, USA
| | - Kiersten J Crouse
- Mechanical Engineering Department, University of South Carolina, Columbia, SC, USA
| | - Tarek Shazly
- Biomedical Engineering Program, University of South Carolina, Columbia, SC, USA
- Mechanical Engineering Department, University of South Carolina, Columbia, SC, USA
| | - John F Eberth
- Biomedical Engineering Program, University of South Carolina, Columbia, SC, USA.
- Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, PA, USA.
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Kostelnik CJ, Crouse KJ, Carver W, Eberth JF. Longitudinal histomechanical heterogeneity of the internal thoracic artery. J Mech Behav Biomed Mater 2021; 116:104314. [PMID: 33476887 DOI: 10.1016/j.jmbbm.2021.104314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 12/10/2020] [Accepted: 01/03/2021] [Indexed: 11/16/2022]
Abstract
The internal thoracic artery (ITA) is the principal choice for coronary artery bypass grafting (CABG) due to its mechanical compatibility, histological composition, anti-thrombogenic lumen, and single anastomotic junction. Originating at the subclavian artery, traversing the thoracic cavity, and terminating at the superior epigastric and musculophrenic bifurcation, bilateral ITAs follow a protracted circuitous pathway. The physiological hemodynamics, anatomical configuration, and perivascular changes that occur throughout this length influence the tissue's microstructure and gross mechanical properties. Since histomechanics play a major role in premature graft failure we used inflation-extension testing to quantify the regional material and biaxial mechanical properties at four distinct locations along the left (L) and right (R) ITA and fit the results to a structurally-motivated constitutive model. Our comparative analysis of 44 vessel segments revealed a significant increase in the amount of collagen but not smooth muscle and a significant decrease in elastin and elastic lamellae present with distance from the heart. A subsequent decrease in the total deformation energy and isotropic contribution to the strain energy was present in the LITA but not RITA. Circumferential stress and compliance generally decreased along the length of the LITA while axial stress increased in the RITA. When comparing RITAs to LITAs, some morphological and histological differences were found in proximal sections while distal sections revealed differences predominantly in compliance and axial stress. Overall, this information can be used to better guide graft selection, graft preparation, and xenograft-based tissue-engineering strategies for CABG.
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Affiliation(s)
- Colton J Kostelnik
- Biomedical Engineering Program, University of South Carolina, Columbia, SC, USA
| | - Kiersten J Crouse
- Mechanical Engineering Department, University of South Carolina, Columbia, SC, USA
| | - Wayne Carver
- Cell Biology and Anatomy Department, University of South Carolina, Columbia, SC, USA
| | - John F Eberth
- Biomedical Engineering Program, University of South Carolina, Columbia, SC, USA; Cell Biology and Anatomy Department, University of South Carolina, Columbia, SC, USA.
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