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D’Haese S, Claes L, Jaeken E, Deluyker D, Evens L, Heeren E, Haesen S, Vastmans L, Lambrichts I, Wouters K, Schalkwijk CG, Hansen D, Eijnde BO, Bito V. Pyridoxamine Alleviates Cardiac Fibrosis and Oxidative Stress in Western Diet-Induced Prediabetic Rats. Int J Mol Sci 2024; 25:8508. [PMID: 39126079 PMCID: PMC11312841 DOI: 10.3390/ijms25158508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2024] [Revised: 07/30/2024] [Accepted: 08/02/2024] [Indexed: 08/12/2024] Open
Abstract
Individuals with type 2 diabetes mellitus (T2DM) are at an increased risk for heart failure, yet preventive cardiac care is suboptimal in this population. Pyridoxamine (PM), a vitamin B6 analog, has been shown to exert protective effects in metabolic and cardiovascular diseases. In this study, we aimed to investigate whether PM limits adverse cardiac remodeling and dysfunction in rats who develop T2DM. Male rats received a standard chow diet or Western diet (WD) for 18 weeks to induce prediabetes. One WD group received additional PM (1 g/L) via drinking water. Glucose tolerance was assessed with a 1 h oral glucose tolerance test. Cardiac function was evaluated using echocardiography and hemodynamic measurements. Histology on left ventricular (LV) tissue was performed. Treatment with PM prevented the increase in fasting plasma glucose levels compared to WD-fed rats (p < 0.05). LV cardiac dilation tended to be prevented using PM supplementation. In LV tissue, PM limited an increase in interstitial collagen deposition (p < 0.05) seen in WD-fed rats. PM tended to decrease 3-nitrotyrosine and significantly lowered 4-hydroxynonenal content compared to WD-fed rats. We conclude that PM alleviates interstitial fibrosis and oxidative stress in the hearts of WD-induced prediabetic rats.
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Affiliation(s)
- Sarah D’Haese
- UHasselt, Cardio & Organ Systems (COST), Biomedical Research Institute, Agoralaan, 3590 Diepenbeek, Belgium; (S.D.); (D.D.); (E.H.); (S.H.); (L.V.); (I.L.)
- Department of Internal Medicine, CARIM School for Cardiovascular Diseases, Maastricht University Medical Centre, Universiteitssingel 50, 6229 ER Maastricht, The Netherlands; (K.W.); (C.G.S.)
| | - Lisa Claes
- UHasselt, Cardio & Organ Systems (COST), Biomedical Research Institute, Agoralaan, 3590 Diepenbeek, Belgium; (S.D.); (D.D.); (E.H.); (S.H.); (L.V.); (I.L.)
| | - Eva Jaeken
- UHasselt, Cardio & Organ Systems (COST), Biomedical Research Institute, Agoralaan, 3590 Diepenbeek, Belgium; (S.D.); (D.D.); (E.H.); (S.H.); (L.V.); (I.L.)
| | - Dorien Deluyker
- UHasselt, Cardio & Organ Systems (COST), Biomedical Research Institute, Agoralaan, 3590 Diepenbeek, Belgium; (S.D.); (D.D.); (E.H.); (S.H.); (L.V.); (I.L.)
| | - Lize Evens
- UHasselt, Cardio & Organ Systems (COST), Biomedical Research Institute, Agoralaan, 3590 Diepenbeek, Belgium; (S.D.); (D.D.); (E.H.); (S.H.); (L.V.); (I.L.)
| | - Ellen Heeren
- UHasselt, Cardio & Organ Systems (COST), Biomedical Research Institute, Agoralaan, 3590 Diepenbeek, Belgium; (S.D.); (D.D.); (E.H.); (S.H.); (L.V.); (I.L.)
| | - Sibren Haesen
- UHasselt, Cardio & Organ Systems (COST), Biomedical Research Institute, Agoralaan, 3590 Diepenbeek, Belgium; (S.D.); (D.D.); (E.H.); (S.H.); (L.V.); (I.L.)
| | - Lotte Vastmans
- UHasselt, Cardio & Organ Systems (COST), Biomedical Research Institute, Agoralaan, 3590 Diepenbeek, Belgium; (S.D.); (D.D.); (E.H.); (S.H.); (L.V.); (I.L.)
| | - Ivo Lambrichts
- UHasselt, Cardio & Organ Systems (COST), Biomedical Research Institute, Agoralaan, 3590 Diepenbeek, Belgium; (S.D.); (D.D.); (E.H.); (S.H.); (L.V.); (I.L.)
| | - Kristiaan Wouters
- Department of Internal Medicine, CARIM School for Cardiovascular Diseases, Maastricht University Medical Centre, Universiteitssingel 50, 6229 ER Maastricht, The Netherlands; (K.W.); (C.G.S.)
| | - Casper G. Schalkwijk
- Department of Internal Medicine, CARIM School for Cardiovascular Diseases, Maastricht University Medical Centre, Universiteitssingel 50, 6229 ER Maastricht, The Netherlands; (K.W.); (C.G.S.)
| | - Dominique Hansen
- UHasselt, Faculty of Rehabilitation Sciences, REVAL Rehabilitation Research Centre, Agoralaan, 3590 Diepenbeek, Belgium;
- Department of Cardiology, Heart Centre Hasselt, Jessa Hospital, Stadsomvaart 11, 3500 Hasselt, Belgium
| | - BO Eijnde
- SMRc-Sports Medicine Research Center, BIOMED-Biomedical Research Institute, Faculty of Medicine & Life Sciences, Hasselt University, 3590 Diepenbeek, Belgium;
- Division of Sport Science, Stellenbosch University, Stellenbosch 7602, South Africa
| | - Virginie Bito
- UHasselt, Cardio & Organ Systems (COST), Biomedical Research Institute, Agoralaan, 3590 Diepenbeek, Belgium; (S.D.); (D.D.); (E.H.); (S.H.); (L.V.); (I.L.)
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Reeve EH, Barnes JN, Moir ME, Walker AE. Impact of arterial stiffness on cerebrovascular function: a review of evidence from humans and preclincal models. Am J Physiol Heart Circ Physiol 2024; 326:H689-H704. [PMID: 38214904 PMCID: PMC11221809 DOI: 10.1152/ajpheart.00592.2023] [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: 09/25/2023] [Revised: 12/08/2023] [Accepted: 01/08/2024] [Indexed: 01/13/2024]
Abstract
With advancing age, the cerebral vasculature becomes dysfunctional, and this dysfunction is associated with cognitive decline. However, the initiating cause of these age-related cerebrovascular impairments remains incompletely understood. A characteristic feature of the aging vasculature is the increase in stiffness of the large elastic arteries. This increase in arterial stiffness is associated with elevated pulse pressure and blood flow pulsatility in the cerebral vasculature. Evidence from both humans and rodents supports that increases in large elastic artery stiffness are associated with cerebrovascular impairments. These impacts on cerebrovascular function are wide-ranging and include reductions in global and regional cerebral blood flow, cerebral small vessel disease, endothelial cell dysfunction, and impaired perivascular clearance. Furthermore, recent findings suggest that the relationship between arterial stiffness and cerebrovascular function may be influenced by genetics, specifically APOE and NOTCH genotypes. Given the strength of the evidence that age-related increases in arterial stiffness have deleterious impacts on the brain, interventions that target arterial stiffness are needed. The purpose of this review is to summarize the evidence from human and rodent studies, supporting the role of increased arterial stiffness in age-related cerebrovascular impairments.
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Affiliation(s)
- Emily H Reeve
- Department of Human Physiology, University of Oregon, Eugene, Oregon, United States
| | - Jill N Barnes
- Department of Kinesiology University of Wisconsin-Madison, Madison, Wisconsin, United States
| | - M Erin Moir
- Department of Kinesiology University of Wisconsin-Madison, Madison, Wisconsin, United States
| | - Ashley E Walker
- Department of Human Physiology, University of Oregon, Eugene, Oregon, United States
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Kehmeier MN, Khurana A, Bedell BR, Cullen AE, Cannon AT, Henson GD, Walker AE. Effects of dietary soy content on cerebral artery function and behavior in ovariectomized female mice. Am J Physiol Heart Circ Physiol 2024; 326:H636-H647. [PMID: 38156886 PMCID: PMC11221805 DOI: 10.1152/ajpheart.00618.2023] [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: 10/02/2023] [Revised: 12/13/2023] [Accepted: 12/22/2023] [Indexed: 01/03/2024]
Abstract
As females age, they transition through menopause, experiencing a decrease in estrogen and an increase in cardiovascular and neurodegenerative disease risk. Most standard rodent chows contain phytoestrogen-rich soybean meal, which can mimic the effects of estrogen. Understanding the impact of this soybean meal on vascular outcomes is crucial to proper experimental design. Thus, this study aimed to compare the effects of standard and soy-free chows on cerebral artery endothelial function and cognitive function in ovariectomized mice. Young female C57Bl/6J mice (n = 43; ∼6 mo) were randomly assigned to three groups: sham, ovariectomy (OVX), or ovariectomy on a diet containing soy (OVX + Soy). In posterior cerebral arteries, the OVX mice had a 27% lower maximal response to insulin compared with the sham mice. The OVX + Soy mice had a 27% greater maximal vasodilation to insulin compared with the OVX mice and there were no differences in vasodilation between the OVX + Soy and sham groups. The group differences in vasodilation were mediated by differences in nitric oxide bioavailability. The OVX + Soy mice also had greater insulin receptor gene expression in cerebral arteries compared with the OVX mice. However, no differences in aortic or cerebral artery stiffness were observed between groups. Interestingly, the OVX + Soy group scored better on nesting behavior compared with both sham and OVX groups. In summary, we found that ovariectomy impairs insulin-mediated vasodilation in cerebral arteries, but a diet containing soy mitigates these effects. These findings highlight the importance of considering dietary soy when performing vascular and behavioral tests in mice, particularly in females.NEW & NOTEWORTHY To properly design experiments, we must consider how variables like diet impact our outcomes, particularly the effects of soy on females. We found that cerebral artery vasodilation in response to insulin was impaired in ovariectomized female mice compared with intact shams. However, ovariectomized mice fed a soy diet had a preserved cerebral artery insulin-mediated vasodilation. These results highlight that the effects of diet on vascular function may explain inconsistencies found between studies.
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Affiliation(s)
- Mackenzie N Kehmeier
- Department of Human Physiology, University of Oregon, Eugene, Oregon, United States
| | - Aleena Khurana
- Department of Human Physiology, University of Oregon, Eugene, Oregon, United States
| | - Bradley R Bedell
- Department of Human Physiology, University of Oregon, Eugene, Oregon, United States
| | - Abigail E Cullen
- Department of Human Physiology, University of Oregon, Eugene, Oregon, United States
| | - Audrey T Cannon
- Department of Human Physiology, University of Oregon, Eugene, Oregon, United States
| | - Grant D Henson
- Department of Human Physiology, University of Oregon, Eugene, Oregon, United States
| | - Ashley E Walker
- Department of Human Physiology, University of Oregon, Eugene, Oregon, United States
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