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Lebsir D, Cantabella E, Cohen D, Sache A, Ebrahimian T, Kereselidze D, Amine Benadjaoud M, Maurisier FC, Guigon P, René Jourdain J, Benderitter M, Lestaevel P, Souidi M. Effect of repetitive potassium iodide on thyroid and cardiovascular functions in elderly rats. Biochem Biophys Rep 2020; 24:100816. [PMID: 33024842 PMCID: PMC7528076 DOI: 10.1016/j.bbrep.2020.100816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 08/29/2020] [Accepted: 08/31/2020] [Indexed: 11/28/2022] Open
Abstract
Background To date, paediatric thyroid cancer has been the most severe health consequence of the Chernobyl accident, caused by radioactive iodine (131I) aerosol's dispersion. WHO recommends a single dose of potassium iodide (KI) to reduce this risk. Following the Fukushima accident, it became obvious that repetitive doses of KI may be necessary due to multiple exposures to 131I. Knowledge about the effects of repeated ITB (Iodine Thyroid Blocking) is scarce and controversial. KI may affect the thyroid hormones synthesis; which is crucial for the cardiovascular function. Furthermore, myocardial and vascular endothelial tissues are sensitizes to subtle changes at the concentration of circulating pituitary and/or thyroid hormones. Objective In this preclinical study, we aimed to assess the effects of repeated ITB in elderly male rats. Methods Twelve months old male Wistar rats were subjected to either KI or saline solution for eight days. Analyses were performed 24 h and 30 days after the treatment discontinuation. Findings We reported a significant increase (18%) in some urinary parameters related to renal function, a subtle decrease of plasma TSH level, a significant increase (379%) in renin and a significant decrease (50%) in aldosterone upon KI administration. At the molecular level, the expression of thyroid and cardiovascular genes was significantly affected by the treatment. However, in our experimental settlement, animal heart rate was not significantly affected thirty days after KI discontinuation. ECG patterns did not change after administration of KI, and arrhythmia was not observed in these conditions despite the PR-intervals decreased significantly. Cardiovascular physiology was preserved. Conclusion Our results indicate that repeated ITB in elderly rats is characterized by molecular modifications of cardiovascular key actors, particularly the Renin-angiotensin-aldosterone axis with a preserved physiological homeostasis. This new scientific evidence may be useful for the maturation of ITB guidelines especially for elderly sub-population. Repeated ITB impairs the expression of genes involved in thyroid and cardiovascular functioning in elderly rats. Repeated ITB impairs biochemical profile and the Renin-Angiotensin- Aldosterone axis. Repeated ITB do not impair cardiovascular function. ITB guidelines especially for elderly sub-population may take into account the risk benefit balance.
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Affiliation(s)
- Dalila Lebsir
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), 92262, Fontenay-aux-Roses, France
| | - Elsa Cantabella
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), 92262, Fontenay-aux-Roses, France
| | - David Cohen
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), 92262, Fontenay-aux-Roses, France
| | - Amandine Sache
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), 92262, Fontenay-aux-Roses, France
| | - Teni Ebrahimian
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), 92262, Fontenay-aux-Roses, France
| | - Dimitri Kereselidze
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), 92262, Fontenay-aux-Roses, France
| | | | - François Caire Maurisier
- Pharmacie Centrale des Armées, Direction des Approvisionnement en Produits de Santé des Armées, 45000, Orléans, France
| | - Pierre Guigon
- Pharmacie Centrale des Armées, Direction des Approvisionnement en Produits de Santé des Armées, 45000, Orléans, France
| | - Jean René Jourdain
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), 92262, Fontenay-aux-Roses, France
| | - Marc Benderitter
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), 92262, Fontenay-aux-Roses, France
| | - Philippe Lestaevel
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), 92262, Fontenay-aux-Roses, France
| | - Maâmar Souidi
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), 92262, Fontenay-aux-Roses, France
- Corresponding author.
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Asai A, Shuto Y, Nagao M, Kawahara M, Miyazawa T, Sugihara H, Oikawa S. Metformin Attenuates Early-Stage Atherosclerosis in Mildly Hyperglycemic Oikawa-Nagao Mice. J Atheroscler Thromb 2019; 26:1075-1083. [PMID: 30971640 PMCID: PMC6927811 DOI: 10.5551/jat.48223] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Aim: Although metformin treatment has been reported to reduce the risk of cardiovascular events in patients with type 2 diabetes, the underlying mechanisms have not been elucidated fully. Here we assessed atherosclerotic lesion formation in newly established 2 mouse lines with different blood glucose levels (Oikawa-Nagao Diabetes-Prone [ON-DP] and -Resistant [ON-DR]) to evaluate the effect of metformin on early-stage atherosclerosis. Methods: Mildly hyperglycemic ON-DP and normoglycemic ON-DR female mice fed an atherogenic diet for 20 weeks (8–28 weeks of age). During the feeding period, one group of each mouse line received metformin in drinking water (0.1%), while another group received water alone as control. Atherosclerotic lesion formation in the aortic sinus was quantitively analyzed from the oil red O-stained area of the serial sections. Results: Metformin treatment did not affect food intake, body weight, and casual blood glucose levels within each mouse line during the 20-week feeding period. Nevertheless, metformin treatment significantly reduced atherosclerotic lesion formation in the ON-DP mice (59% of control), whereas no significant effect of metformin was observed in the lesion size of the ON-DR mice. Conclusion: Metformin can attenuate early-stage atherogenesis in mildly hyperglycemic ON-DP mice. Pleiotropic effects of metformin, beyond its glucose-lowering action, may contribute to the antiatherogenic property in the early-stage atherosclerosis.
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Affiliation(s)
- Akira Asai
- Department of Endocrinology, Diabetes and Metabolism, Graduate School of Medicine, Nippon Medical School.,Food and Health Science Research Unit, Graduate School of Agricultural Science, Tohoku University
| | - Yuki Shuto
- Department of Endocrinology, Diabetes and Metabolism, Graduate School of Medicine, Nippon Medical School
| | - Mototsugu Nagao
- Department of Endocrinology, Diabetes and Metabolism, Graduate School of Medicine, Nippon Medical School
| | - Momoyo Kawahara
- Department of Endocrinology, Diabetes and Metabolism, Graduate School of Medicine, Nippon Medical School
| | - Teruo Miyazawa
- Food and Health Science Research Unit, Graduate School of Agricultural Science, Tohoku University
| | - Hitoshi Sugihara
- Department of Endocrinology, Diabetes and Metabolism, Graduate School of Medicine, Nippon Medical School
| | - Shinichi Oikawa
- Department of Endocrinology, Diabetes and Metabolism, Graduate School of Medicine, Nippon Medical School
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Asai A, Nagao M, Kawahara M, Shuto Y, Sugihara H, Oikawa S. Effect of impaired glucose tolerance on atherosclerotic lesion formation: an evaluation in selectively bred mice with different susceptibilities to glucose intolerance. Atherosclerosis 2013; 231:421-6. [PMID: 24267261 DOI: 10.1016/j.atherosclerosis.2013.10.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Revised: 09/17/2013] [Accepted: 10/07/2013] [Indexed: 12/26/2022]
Abstract
OBJECTIVE Impaired glucose tolerance (IGT) is an independent risk factor for atherosclerotic cardiovascular disease. However, due to the lack of appropriate animal models, the underlying mechanisms for IGT-induced atherosclerosis remain to be elucidated in vivo. We recently used selective breeding to establish 2 mouse lines with distinctively different susceptibilities to diet-induced glucose intolerance, designated selectively bred diet-induced glucose intolerance-resistant (SDG-R) and SDG-prone (SDG-P), respectively. Here, we assessed atherosclerotic lesion formation in these mice. METHODS Female SDG-R and SDG-P mice were fed an atherogenic diet (AD; 1.25% cholesterol, 0.5% sodium cholate, and 36% energy as fat) for 20 weeks (8-28 weeks of age). Oral glucose tolerance tests were performed during the AD-feeding period. Atherosclerotic lesion formation was quantitatively analyzed in serial aortic sinus sections by oil red O staining. Plasma lipids were measured after the AD-feeding period. RESULTS Glucose tolerance was impaired in SDG-P mice as compared to SDG-R mice over the 20-week AD-feeding period. No significant differences were observed in any plasma lipid measurement between the 2 mouse lines. Aortic sinus atherosclerotic lesion formation in SDG-P mice was approximately 4-fold greater than that in SDG-R mice. CONCLUSION In 2 mouse lines with different susceptibilities to diet-induced glucose intolerance, IGT accelerated atherosclerotic lesion formation. These mice may therefore serve as useful in vivo models for investigating the causal role of IGT in the pathogenesis of atherosclerosis.
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Affiliation(s)
- Akira Asai
- Division of Endocrinology and Metabolism, Department of Medicine, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo 113-8603, Japan
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Sanadgol N, Sanchooli J, Nikravesh A, Momeni R, Khajeh H, Safari M, Radpour M. Association of VCAM-1 Gene Polymorphisms with Multiple Sclerosis Susceptibility in the Southeast of Iran. ACTA ACUST UNITED AC 2013. [DOI: 10.3923/ajbmb.2013.329.335] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Fontanesi L, Galimberti G, Calò DG, Fronza R, Martelli PL, Scotti E, Colombo M, Schiavo G, Casadio R, Buttazzoni L, Russo V. Identification and association analysis of several hundred single nucleotide polymorphisms within candidate genes for back fat thickness in Italian Large White pigs using a selective genotyping approach1. J Anim Sci 2012; 90:2450-64. [DOI: 10.2527/jas.2011-4797] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Affiliation(s)
- L. Fontanesi
- Department of Agro-Food Science and Technology, Sezione di Allevamenti Zootecnici, University of Bologna, Viale Fanin 46, 40127 Bologna, Italy
- Centre of Genome Biology, University of Bologna, 40126 Bologna, Italy
| | - G. Galimberti
- Department of Statistical Sciences “Paolo Fortunati,” University of Bologna, Via delle Belle Arti 41, 40126 Bologna, Italy
| | - D. G. Calò
- Department of Statistical Sciences “Paolo Fortunati,” University of Bologna, Via delle Belle Arti 41, 40126 Bologna, Italy
| | - R. Fronza
- Biocomputing Group, Department of Experimental Evolutionary Biology, University of Bologna, Via San Giacomo, 40126 Bologna, Italy
| | - P. L. Martelli
- Centre of Genome Biology, University of Bologna, 40126 Bologna, Italy
- Biocomputing Group, Department of Experimental Evolutionary Biology, University of Bologna, Via San Giacomo, 40126 Bologna, Italy
| | - E. Scotti
- Department of Agro-Food Science and Technology, Sezione di Allevamenti Zootecnici, University of Bologna, Viale Fanin 46, 40127 Bologna, Italy
| | - M. Colombo
- Department of Agro-Food Science and Technology, Sezione di Allevamenti Zootecnici, University of Bologna, Viale Fanin 46, 40127 Bologna, Italy
| | - G. Schiavo
- Department of Agro-Food Science and Technology, Sezione di Allevamenti Zootecnici, University of Bologna, Viale Fanin 46, 40127 Bologna, Italy
- Centre of Genome Biology, University of Bologna, 40126 Bologna, Italy
- Biocomputing Group, Department of Experimental Evolutionary Biology, University of Bologna, Via San Giacomo, 40126 Bologna, Italy
| | - R. Casadio
- Centre of Genome Biology, University of Bologna, 40126 Bologna, Italy
- Biocomputing Group, Department of Experimental Evolutionary Biology, University of Bologna, Via San Giacomo, 40126 Bologna, Italy
| | - L. Buttazzoni
- CRA, Centro di Ricerca per la Produzione delle Carni e il Miglioramento Genetico, Via Salaria 31, 00015 Monterotondo Scalo, Rome, Italy
| | - V. Russo
- Department of Agro-Food Science and Technology, Sezione di Allevamenti Zootecnici, University of Bologna, Viale Fanin 46, 40127 Bologna, Italy
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Polymorphisms of vascular cell adhesion molecule1 (VCAM1) in polycystic ovary syndrome determined by quantitative real-time polymerase chain reaction and melting curve analysis. Eur J Obstet Gynecol Reprod Biol 2012; 160:174-8. [DOI: 10.1016/j.ejogrb.2011.11.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2011] [Revised: 10/18/2011] [Accepted: 11/10/2011] [Indexed: 11/16/2022]
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Selvarajah JR, Smith CJ, Hulme S, Georgiou R, Sherrington C, Staniland J, Illingworth KJ, Jury F, Payton A, Ollier WE, Vail A, Rothwell NJ, Hopkins SJ, Tyrrell PJ. Does Inflammation Predispose to Recurrent Vascular Events after Recent Transient Ischaemic Attack and Minor Stroke? the North West of England Transient Ischaemic Attack and Minor Stroke (NORTHSTAR) Study. Int J Stroke 2011; 6:187-94. [DOI: 10.1111/j.1747-4949.2010.00561.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Background and hypothesis Inflammation is implicated in the pathogenesis and outcome of ischaemic injury. Poststroke inflammation is associated with outcome but it remains unclear whether such inflammation precedes or results from ischaemic injury. We hypothesised that inflammatory markers are associated with an increased risk of recurrent vascular events soon after transient ischaemic attack and minor stroke. Methods This was a multicentre, prospective, nested case–control study. Plasma concentrations of C-reactive protein, interleukin-6, interleukin-1-receptor antagonist and fibrinogen, leucocyte counts, erythrocyte sedimentation rate and inflammatory gene allele frequencies were analysed in 711 patients with recent transient ischaemic attack or minor stroke. Cases were defined by the incidence of one or more recurrent vascular events during the three-month follow-up. Association of inflammatory markers with case-status was determined using conditional logistic regression. Results Plasma concentrations of C-reactive protein, interleukin-1-receptor antagonist and interleukin-6 were not associated with case-status. In secondary analyses, only erythrocyte sedimentation rate was significantly associated with case-status (odds ratio 1·39, 95% confidence interval 1·03–1·85; P=0·03), but this effect did not persist after adjustment for smoking and past history of transient ischaemic attack or stroke. Single nucleotide polymorphisms in four inflammatory genes (interleukin-6, fibrinogen, P-selectin and vascular cell adhesion molecule-1) were nominally associated with case-status. Conclusions Circulating inflammatory markers were not associated with recurrent vascular events. Nominally significant associations between genetic markers and case-status will require replication. These data provide little evidence for an inflammatory state predisposing to stroke and other vascular events in a susceptible population.
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Affiliation(s)
| | - Craig J. Smith
- Salford Royal Hospitals NHS Foundation Trust, Salford, UK
| | - Sharon Hulme
- School of Biomedicine, The University of Manchester, UK
| | | | | | - John Staniland
- Salford Royal Hospitals NHS Foundation Trust, Salford, UK
| | | | - Francine Jury
- Centre for Integrated Genomic Medical Research, The University of Manchester, Manchester, UK
| | - Antony Payton
- Centre for Integrated Genomic Medical Research, The University of Manchester, Manchester, UK
| | - William E. Ollier
- Centre for Integrated Genomic Medical Research, The University of Manchester, Manchester, UK
| | - Andy Vail
- Health Methodology Research Group, The University of Manchester, UK
| | | | | | - Philippa J. Tyrrell
- Salford Royal Hospitals NHS Foundation Trust, Salford, UK
- School of Biomedicine, The University of Manchester, UK
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