PCSK9 inhibitor and atorvastatin reduce cardiac impairment in ovariectomized prediabetic rats via improved mitochondrial function and Ca 2+ regulation
| Autor: | Thidarat Jaiwongkam, Busarin Arunsak, Nipon Chattipakorn, Wasana Pratchayasakul, Chanisa Thonusin, Siriporn C. Chattipakorn, Siripong Palee, Patchareeya Amput, Sasiwan Kerdphoo |
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| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
myalgia medicine.medical_specialty Normal diet Atorvastatin 03 medical and health sciences 0302 clinical medicine Insulin resistance Internal medicine Diabetes mellitus medicine business.industry PCSK9 nutritional and metabolic diseases Cell Biology medicine.disease 030104 developmental biology Endocrinology 030220 oncology & carcinogenesis Ovariectomized rat Molecular Medicine Kexin lipids (amino acids peptides and proteins) medicine.symptom business medicine.drug |
| Zdroj: | Journal of Cellular and Molecular Medicine. 24:9189-9203 |
| ISSN: | 1582-4934 1582-1838 |
| DOI: | 10.1111/jcmm.15556 |
| Popis: | Post-menopausal women have a higher risk of developing cardiometabolic dysfunction. Atorvastatin attenuates dyslipidaemia and cardiac dysfunction but it can have undesirable effects including increased risk of diabetes and myalgia. Currently, the proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibitor efficiently reduces low-density lipoprotein cholesterol (LDL-C) levels more effectively than atorvastatin. We have been suggested that PCSK9 inhibitor attenuated cardiometabolic impairment more effectively than atorvastatin in ovariectomized prediabetic rats. Female Wistar rats (n = 48) were fed a normal diet (ND) or high-fat diet (HFD) for 12 weeks. Then, HFD rats were assigned to a sham-operated (Sham) or ovariectomized (OVX) group. Six weeks after surgery, the OVX group was subdivided into 4 treatment groups: vehicle (HFOV), atorvastatin (HFOA) (40 mg/kg/day; s.c.), PCSK9 inhibitor (HFOP) (4 mg/kg/day; s.c.) and oestrogen (HFOE2 ) (50 µg/kg/day; s.c.) for an additional 3 weeks. Metabolic parameters, cardiac and mitochondrial function, and [Ca2+ ]i transients were evaluated. All HFD rats became obese-insulin resistant. HFS rats had significantly impaired left ventricular (LV) function, cardiac mitochondrial function and [Ca2+ ]i transient dysregulation. Oestrogen deprivation (HFOV) aggravated all of these impairments. Our findings indicated that the atorvastatin, PCSK9 inhibitor and oestrogen shared similar efficacy in the attenuation in cardiometabolic impairment in ovariectomized prediabetic rats. |
| Databáze: | OpenAIRE |
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