PMID- 31377002 OWN - NLM STAT- MEDLINE DCOM- 20200206 LR - 20200206 IS - 1618-0372 (Electronic) IS - 0065-1281 (Linking) VI - 121 IP - 7 DP - 2019 Oct TI - Hyperhomocysteinemia and myocardial remodeling in the sand rat, Psammomys obesus. PG - 823-832 LID - S0065-1281(19)30088-1 [pii] LID - 10.1016/j.acthis.2019.07.008 [doi] AB - OBJECTIVE: Numerous studies have shown that a methionine-rich diet induces hyperhomocysteinemia (Hhcy), a risk factor for cardiovascular diseases. The objective of the present study was to determine the involvement of Hhcy in cardiac remodeling in the sand rat Psammomys obesus. MATERIALS AND METHODS: An experimental Hhcy was induced, in the sand rat Psammomys obesus, by intraperitoneal injection of 300 mg/kg of body weight/day of methionine for 1 month. The impact of Hhcy on the cellular and matricial structures of the myocardium was analyzed with histological techniques (Masson trichrome and Sirius red staining). Immunohistochemistry allowed us to analyze several factors involved in myocardial remodeling, such as fibrillar collagen I and III, metalloproteases (MMP-2 and -9) and their inhibitors (TIMP-1 and -2), TGF-beta1 and activated caspase 3. RESULTS: Our results show that Hhcy induced by an excess of methionine causes, in the myocardium of Psammomys obesus, a significant accumulation of fibrillar collagens I and III at the interstitial and perivascular scales, indicating the appearance of fibrosis, which is associated with an immuno-expression increase of TGF-beta1, MMP-9 and TIMP-2 and an immuno-expression decrease of MMP-2 and TIMP-1. Also, Hhcy induces apoptosis of some cardiomyocytes and cardiac fibroblasts by increasing of activated caspase 3 expression. These results highlight a remodeling of cardiac tissue in hyperhomocysteinemic Psammomys obesus. CI - Copyright (c) 2019 Elsevier GmbH. All rights reserved. FAU - Chaouad, Billel AU - Chaouad B AD - Biochemistry and Remodeling of the Extracellular Matrix, Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, Houari Boumediene University of Science and Technology (USTHB), Bab Ezzouar, El Alia, 16111, Algiers, Algeria; University Djilali Bounaama of Khemis Miliana, Faculty of Natural and Life Sciences and Earth Sciences, Theniet El Had Road, 44225, Khemis Miliana, Algeria. FAU - Moudilou, Elara N AU - Moudilou EN AD - UMRS 449, General Biology - Reproduction and Comparative Development, Lyon Catholic University, UDL, EPHE, PSL, 10, Place des Archives, 69288, Lyon Cedex 02, France. FAU - Ghoul, Adel AU - Ghoul A AD - Biochemistry and Remodeling of the Extracellular Matrix, Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, Houari Boumediene University of Science and Technology (USTHB), Bab Ezzouar, El Alia, 16111, Algiers, Algeria. FAU - Zerrouk, Fouzia AU - Zerrouk F AD - Biochemistry and Remodeling of the Extracellular Matrix, Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, Houari Boumediene University of Science and Technology (USTHB), Bab Ezzouar, El Alia, 16111, Algiers, Algeria. FAU - Moulahoum, Anissa AU - Moulahoum A AD - Biochemistry and Remodeling of the Extracellular Matrix, Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, Houari Boumediene University of Science and Technology (USTHB), Bab Ezzouar, El Alia, 16111, Algiers, Algeria. FAU - Othmani-Mecif, Khira AU - Othmani-Mecif K AD - Biochemistry and Remodeling of the Extracellular Matrix, Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, Houari Boumediene University of Science and Technology (USTHB), Bab Ezzouar, El Alia, 16111, Algiers, Algeria. FAU - Cherifi, Mohamed El Hadi AU - Cherifi MEH AD - Central Laboratory of Biology, EPH Bologhine Ibn Ziri, Algiers, Algeria. FAU - Exbrayat, Jean-Marie AU - Exbrayat JM AD - UMRS 449, General Biology - Reproduction and Comparative Development, Lyon Catholic University, UDL, EPHE, PSL, 10, Place des Archives, 69288, Lyon Cedex 02, France. FAU - Benazzoug, Yasmina AU - Benazzoug Y AD - Biochemistry and Remodeling of the Extracellular Matrix, Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, Houari Boumediene University of Science and Technology (USTHB), Bab Ezzouar, El Alia, 16111, Algiers, Algeria. Electronic address: ybenazzoug@usthb.dz. LA - eng PT - Journal Article DEP - 20190731 PL - Germany TA - Acta Histochem JT - Acta histochemica JID - 0370320 RN - 0 (Muscle Proteins) RN - AE28F7PNPL (Methionine) SB - IM MH - Animals MH - *Apoptosis MH - *Cardiomyopathies/chemically induced/metabolism/pathology MH - Gerbillinae MH - *Hyperhomocysteinemia/chemically induced/metabolism/pathology MH - Methionine/adverse effects/pharmacology MH - Muscle Proteins/*biosynthesis MH - *Myocardium/metabolism/pathology MH - *Myocytes, Cardiac/metabolism/pathology OTO - NOTNLM OT - Apoptosis OT - Fibrosis OT - Hyperhomocysteinemia OT - Myocardium OT - Psammomys obesus EDAT- 2019/08/05 06:00 MHDA- 2020/02/07 06:00 CRDT- 2019/08/05 06:00 PHST- 2019/03/19 00:00 [received] PHST- 2019/07/22 00:00 [revised] PHST- 2019/07/25 00:00 [accepted] PHST- 2019/08/05 06:00 [pubmed] PHST- 2020/02/07 06:00 [medline] PHST- 2019/08/05 06:00 [entrez] AID - S0065-1281(19)30088-1 [pii] AID - 10.1016/j.acthis.2019.07.008 [doi] PST - ppublish SO - Acta Histochem. 2019 Oct;121(7):823-832. doi: 10.1016/j.acthis.2019.07.008. Epub 2019 Jul 31.