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Manzéger A, Garmaa G, Mózes MM, Hansmann G, Kökény G. Pioglitazone Protects Tubular Epithelial Cells during Kidney Fibrosis by Attenuating miRNA Dysregulation and Autophagy Dysfunction Induced by TGF-β. Int J Mol Sci 2023; 24:15520. [PMID: 37958504 PMCID: PMC10649561 DOI: 10.3390/ijms242115520] [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: 10/05/2023] [Revised: 10/20/2023] [Accepted: 10/21/2023] [Indexed: 11/15/2023] Open
Abstract
Excessive renal TGF-β production and pro-fibrotic miRNAs are important drivers of kidney fibrosis that lack any efficient treatment. Dysfunctional autophagy might play an important role in the pathogenesis. We aimed to study the yet unknown effects of peroxisome proliferator-activated receptor-γ (PPARγ) agonist pioglitazone (Pio) on renal autophagy and miRNA dysregulation during fibrosis. Mouse primary tubular epithelial cells (PTEC) were isolated, pre-treated with 5 µM pioglitazone, and then stimulated with 10 ng/mL TGF-β1 for 24 h. Male 10-week-old C57Bl6 control (CTL) and TGF-β overexpressing mice were fed with regular chow (TGF) or Pio-containing chow (20 mg/kg/day) for 5 weeks (TGF + Pio). PTEC and kidneys were evaluated for mRNA and protein expression. In PTEC, pioglitazone attenuated (p < 0.05) the TGF-β-induced up-regulation of Col1a1 (1.4-fold), Tgfb1 (2.2-fold), Ctgf (1.5-fold), Egr2 (2.5-fold) mRNAs, miR-130a (1.6-fold), and miR-199a (1.5-fold), inhibited epithelial-to-mesenchymal transition, and rescued autophagy function. In TGF mice, pioglitazone greatly improved kidney fibrosis and related dysfunctional autophagy (increased LC3-II/I ratio and reduced SQSTM1 protein content (p < 0.05)). These were accompanied by 5-fold, 3-fold, 12-fold, and 2-fold suppression (p < 0.05) of renal Ccl2, Il6, C3, and Lgals3 mRNA expression, respectively. Our results implicate that pioglitazone counteracts multiple pro-fibrotic processes in the kidney, including autophagy dysfunction and miRNA dysregulation.
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Affiliation(s)
- Anna Manzéger
- Institute of Translational Medicine, Semmelweis University, Nagyvárad tér 4, 1089 Budapest, Hungary; (A.M.); (G.G.); (M.M.M.)
- International Nephrology Research and Training Center, Semmelweis University, Nagyvárad tér 4, 1089 Budapest, Hungary
| | - Gantsetseg Garmaa
- Institute of Translational Medicine, Semmelweis University, Nagyvárad tér 4, 1089 Budapest, Hungary; (A.M.); (G.G.); (M.M.M.)
| | - Miklós M. Mózes
- Institute of Translational Medicine, Semmelweis University, Nagyvárad tér 4, 1089 Budapest, Hungary; (A.M.); (G.G.); (M.M.M.)
- International Nephrology Research and Training Center, Semmelweis University, Nagyvárad tér 4, 1089 Budapest, Hungary
| | - Georg Hansmann
- Department of Pediatric Cardiology and Critical Care, Hannover Medical School, 30625 Hannover, Germany;
| | - Gábor Kökény
- Institute of Translational Medicine, Semmelweis University, Nagyvárad tér 4, 1089 Budapest, Hungary; (A.M.); (G.G.); (M.M.M.)
- International Nephrology Research and Training Center, Semmelweis University, Nagyvárad tér 4, 1089 Budapest, Hungary
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Sági B, Vas T, Jakabfi-Csepregi R, Horváth-Szalai Z, Kőszegi T, Csiky B, Nagy J, Kovács TJ. The Role of Two Heart Biomarkers in IgA Nephropathy. Int J Mol Sci 2023; 24:10336. [PMID: 37373483 DOI: 10.3390/ijms241210336] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 06/12/2023] [Accepted: 06/17/2023] [Indexed: 06/29/2023] Open
Abstract
Cardiovascular mortality is a leading cause of death in chronic kidney disease (CKD), as is IgA nephropathy (IgAN). The purpose of this study is to find different biomarkers to estimate the outcome of the disease, which is significantly influenced by the changes in vessels (characterized by arterial stiffness) and the heart. In our cross-sectional study, 90 patients with IgAN were examined. The N-terminal prohormone of brain natriuretic peptide (NT-proBNP) was measured as a heart failure biomarker by an automated immonoassay method, while the carboxy-terminal telopeptide of collagen type I (CITP) as a fibrosis marker was determined using ELISA kits. Arterial stiffness was determined by measuring carotid-femoral pulse wave velocity (cfPWV). Renal function and routine echocardiography examinations were performed as well. Based on eGFR, patients were separated into two categories, CKD 1-2 and CKD 3-5. There were significantly higher NT-proBNP (p = 0.035), cfPWV (p = 0.004), and central aortic systolic pressure (p = 0.037), but not CITP, in the CKD 3-5 group. Both biomarker positivities were significantly higher in the CKD 3-5 group (p = 0.035) compared to the CKD 1-2 group. The central aortic systolic pressure was significantly higher in the diastolic dysfunction group (p = 0.034), while the systolic blood pressure was not. eGFR and hemoglobin levels showed a strong negative correlation, while left ventricular mass index (LVMI), aortic pulse pressure, central aortic systolic pressure, and cfPWV showed a positive correlation with NT-proBNP. cfPWV, aortic pulse pressure, and LVMI showed a strong positive correlation with CITP. Only eGFR was an independent predictor of NT-proBNP by linear regression analysis. NT-proBNP and CITP biomarkers may help to identify IgAN patients at high risk for subclinical heart failure and further atherosclerotic disease.
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Affiliation(s)
- Balázs Sági
- 2nd. Department of Internal Medicine and Nephrology, Diabetes Center, Clinical Center, Medical School, University of Pécs, 7624 Pécs, Hungary
- Fresenius Medical Care Dialysis Center, 7624 Pécs, Hungary
| | - Tibor Vas
- 2nd. Department of Internal Medicine and Nephrology, Diabetes Center, Clinical Center, Medical School, University of Pécs, 7624 Pécs, Hungary
| | - Rita Jakabfi-Csepregi
- Department of Laboratory Medicine, Medical School, University of Pécs, 7624 Pécs, Hungary
- Szentágothai Research Center, University of Pécs, 7624 Pécs, Hungary
| | - Zoltán Horváth-Szalai
- Department of Laboratory Medicine, Medical School, University of Pécs, 7624 Pécs, Hungary
| | - Tamás Kőszegi
- Department of Laboratory Medicine, Medical School, University of Pécs, 7624 Pécs, Hungary
- Szentágothai Research Center, University of Pécs, 7624 Pécs, Hungary
| | - Botond Csiky
- 2nd. Department of Internal Medicine and Nephrology, Diabetes Center, Clinical Center, Medical School, University of Pécs, 7624 Pécs, Hungary
- Fresenius Medical Care Dialysis Center, 7624 Pécs, Hungary
| | - Judit Nagy
- 2nd. Department of Internal Medicine and Nephrology, Diabetes Center, Clinical Center, Medical School, University of Pécs, 7624 Pécs, Hungary
| | - Tibor József Kovács
- 2nd. Department of Internal Medicine and Nephrology, Diabetes Center, Clinical Center, Medical School, University of Pécs, 7624 Pécs, Hungary
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Pál É, Hadjadj L, Fontányi Z, Monori-Kiss A, Lippai N, Horváth EM, Magyar A, Horváth E, Monos E, Nádasy GL, Benyó Z, Várbíró S. Gender, hyperandrogenism and vitamin D deficiency related functional and morphological alterations of rat cerebral arteries. PLoS One 2019; 14:e0216951. [PMID: 31083690 PMCID: PMC6513066 DOI: 10.1371/journal.pone.0216951] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [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: 01/09/2019] [Accepted: 05/01/2019] [Indexed: 12/26/2022] Open
Abstract
Hyperandrogenism is a risk factor of cerebrovascular diseases as androgens can alter markedly the regulation of cerebrovascular tone. We examined the combined impact of androgen excess and vitamin D deficiency (VDD), a common co-morbidity in hyperandrogenic disorders, on remodeling and testosterone-induced vascular responses of anterior cerebral arteries (ACA) in order to evaluate the interplay between androgens and VDD in the cerebral vasculature. Male and female Wistar rats were either fed with vitamin D deficient or vitamin D supplemented diet. Half of the female animals from both groups received transdermal testosterone treatment. After 8 weeks, vessel lumen, wall thickness and testosterone-induced vascular tone of isolated ACA were determined using pressure microangiometry and histological examination. Androgen receptor protein expression in the wall of cerebral arteries was examined using immunohistochemistry. In female rats only combined VDD and testosterone treatment decreased the lumen and increased the wall thickness of ACA. In males, however VDD by itself was able to decrease the lumen and increase the wall thickness. Vascular reactivity showed similar alterations: in females, testosterone constricted the ACA only after combined VDD and hyperandrogenism, whereas in males VDD resulted in increased testosterone-induced contractions in spite of decreased androgen receptor expression. In conclusion, a marked interplay between hyperandrogenism and VDD results in inward remodeling and enhanced testosterone-induced constrictions of cerebral arteries, which might compromise the cerebral circulation and thus, increase the risk of stroke in the long term. In addition, the early cerebrovascular manifestation of VDD appears to require androgen excess and thus, depends on gender.
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Affiliation(s)
- Éva Pál
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary
- * E-mail:
| | - Leila Hadjadj
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary
| | - Zoltán Fontányi
- 2nd Department of Obstetrics and Gynecology, Semmelweis University, Budapest, Hungary
| | - Anna Monori-Kiss
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary
| | - Norbert Lippai
- Department of Pathology, Jász-Nagykun-Szolnok County Hetényi Géza Hospital, Szolnok, Hungary
| | | | - Attila Magyar
- Department of Anatomy, Histology and Embryology, Semmelweis University, Budapest, Hungary
| | - Eszter Horváth
- 2nd Department of Obstetrics and Gynecology, Semmelweis University, Budapest, Hungary
| | - Emil Monos
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary
| | - György L. Nádasy
- Department of Physiology, Semmelweis University, Budapest, Hungary
| | - Zoltán Benyó
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary
| | - Szabolcs Várbíró
- 2nd Department of Obstetrics and Gynecology, Semmelweis University, Budapest, Hungary
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Pál É, Hadjadj L, Fontányi Z, Monori-Kiss A, Mezei Z, Lippai N, Magyar A, Heinzlmann A, Karvaly G, Monos E, Nádasy G, Benyó Z, Várbíró S. Vitamin D deficiency causes inward hypertrophic remodeling and alters vascular reactivity of rat cerebral arterioles. PLoS One 2018; 13:e0192480. [PMID: 29408903 PMCID: PMC5800593 DOI: 10.1371/journal.pone.0192480] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [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: 08/30/2017] [Accepted: 01/24/2018] [Indexed: 02/07/2023] Open
Abstract
Background and purpose Vitamin D deficiency (VDD) is a global health problem, which can lead to several pathophysiological consequences including cardiovascular diseases. Its impact on the cerebrovascular system is not well understood. The goal of the present work was to examine the effects of VDD on the morphological, biomechanical and functional properties of cerebral arterioles. Methods Four-week-old male Wistar rats (n = 11 per group) were either fed with vitamin D deficient diet or received conventional rat chow with per os vitamin D supplementation. Cardiovascular parameters and hormone levels (testosterone, androstenedione, progesterone and 25-hydroxyvitamin D) were measured during the study. After 8 weeks of treatment anterior cerebral artery segments were prepared and their morphological, biomechanical and functional properties were examined using pressure microangiometry. Resorcin-fuchsin and smooth muscle actin staining were used to detect elastic fiber density and smooth muscle cell counts in the vessel wall, respectively. Sections were immunostained for eNOS and COX-2 as well. Results VDD markedly increased the wall thickness, the wall-to-lumen ratio and the wall cross-sectional area of arterioles as well as the number of smooth muscle cells in the tunica media. As a consequence, tangential wall stress was significantly lower in the VDD group. In addition, VDD increased the myogenic as well as the uridine 5’-triphosphate-induced tone and impaired bradykinin-induced relaxation. Decreased eNOS and increased COX-2 expression were also observed in the endothelium of VDD animals. Conclusions VDD causes inward hypertrophic remodeling due to vascular smooth muscle cell proliferation and enhances the vessel tone probably because of increased vasoconstrictor prostanoid levels in young adult rats. In addition, the decreased eNOS expression results in endothelial dysfunction. These morphological and functional alterations can potentially compromise the cerebral circulation and lead to cerebrovascular disorders in VDD.
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Affiliation(s)
- Éva Pál
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary
- * E-mail:
| | - Leila Hadjadj
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary
| | - Zoltán Fontányi
- 2 Department of Obstetrics and Gynecology, Semmelweis University, Budapest, Hungary
| | - Anna Monori-Kiss
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary
| | - Zsuzsanna Mezei
- Department of Physiology, Semmelweis University, Budapest, Hungary
| | - Norbert Lippai
- Department of Pathology, Jász-Nagykun-Szolnok County Hetényi Géza Hospital, Szolnok, Hungary
| | - Attila Magyar
- Department of Anatomy, Histology and Embryology, Semmelweis University, Budapest, Hungary
| | - Andrea Heinzlmann
- Department of Anatomy, Histology and Embryology, Semmelweis University, Budapest, Hungary
| | - Gellért Karvaly
- Department of Laboratory Medicine, Semmelweis University, Budapest, Hungary
- Bionics Innovation Center, Budapest, Hungary
| | - Emil Monos
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary
| | - György Nádasy
- Department of Physiology, Semmelweis University, Budapest, Hungary
| | - Zoltán Benyó
- Institute of Clinical Experimental Research, Semmelweis University, Budapest, Hungary
| | - Szabolcs Várbíró
- 2 Department of Obstetrics and Gynecology, Semmelweis University, Budapest, Hungary
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