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Background: We have shown that BNIP3 expression is significantly increased in heart failure (HF). In this study, we tested the effects of BNIP3 manipulation in HF.
Methods And Results: In a rat model of pressure overload HF, BNIP3 knockdown significantly decreased left ventricular (LV) volumes with significant improvement in LV diastolic and systolic function. There were significant decreases in myocardial apoptosis and LV interstitial fibrosis. Ultrastructurally, BNIP3 knockdown attenuated mitochondrial fragmentation and restored mitochondrial morphology and integrity. On the molecular level, there were significant decreases in endoplasmic reticulum (ER) stress and mitochondrial apoptotic markers. One of the mechanisms by which BNIP3 mediates mitochondrial dysfunction is via the oligomerization of the voltage-dependent anion channels causing a shift of calcium from the ER to mitochondrial compartments, leading to the decrease in ER calcium content, mitochondrial damage, apoptosis, and LV interstitial fibrosis, and hence contributes to both systolic and diastolic myocardial dysfunction, respectively. In systolic HF, the downregulation of SERCA2a (sarcoplasmic-endoplasmic reticulum calcium ATPase), along with an increased BNIP3 expression, further worsen myocardial diastolic and systolic function and contribute to the major remodeling seen in systolic HF as compared with diastolic HF with normal SERCA2a expression.
Conclusions: The increase in BNIP3 expression contributes mainly to myocardial diastolic dysfunction through mitochondrial apoptosis, LV interstitial fibrosis, and to some extent to myocardial systolic dysfunction attributable to the shift of calcium from the ER to the mitochondria and to the decrease in ER calcium content. However, SERCA2a downregulation remains a prerequisite for the major LV remodeling seen in systolic HF.
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http://dx.doi.org/10.1161/CIRCHEARTFAILURE.112.000200 | DOI Listing |
Front Vet Sci
December 2024
Department of Veterinary Sciences, University of Messina, Messina, Italy.
Cannabidiol (CBD) is a non-psychotropic cannabinoid obtained from hemp ( L.) used for pain management in companion animals including horses. The present study aimed to evaluate the efficacy of cannabidiolic acid (CBDA) and cannabigerol/cannabidiol oil (CBG/CBD) oral administration in alleviating pain in adult horses affected by chronic osteoarthritis (OA).
View Article and Find Full Text PDFInt J Cardiol Heart Vasc
February 2025
Shaoxing Central Hospital, No. 1 Huayu Road, Keqiao District, Shaoxing Province, 312030, China.
Objective: The present study aimed to investigate the correlation between lipoprotein(a) (Lp-a) and coronary artery disease (CAD) complicated by type I cardiorenal syndrome (CRS).
Methods: We conducted a retrospective analysis of patients diagnosed with CAD admitted to the Department of Cardiovascular Medicine at Shaoxing Central Hospital from January 2021 to December 2022, with chief complaints of "chest distress and dyspnea." Patient demographic data, biochemical indicators (including blood lipid levels and serum creatinine), cardiac function markers (such as pro-brain natriuretic peptide, pro-BNP), echocardiography, and coronary angiography results were collected.
BMC Endocr Disord
December 2024
Department of Health Management Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang Province, 830054, China.
Objective: The objective is to assess the effectiveness and safety of tirzepatide, liraglutide, and SGLT2i in individuals diagnosed with type 2 diabetes.
Methods: An inquiry was undertaken within the electronic database spanning from its inception to February 11th, 2024, aimed at identifying randomized controlled trials that assess the efficacy and safety of tirzepatide, liraglutide, canagliflozin, ertugliflozin, empagliflozin, dapagliflozin, and henagliflozin. Perform a network meta-analysis to examine the distinctions among them (PROSPERO registration number: CRD42024537006).
Hypertens Res
December 2024
Department of Hygiene and Public Health, Teikyo University School of Medicine, Tokyo, Japan.
Home blood pressure (BP) measurement is widely used, and home BP plays a central role in hypertension management in clinical practice in Japan. We updated the systematic review to determine whether home BP-based antihypertensive treatment is superior to office BP-based treatment in improving clinical outcomes, including BP levels, in adult patients with essential hypertension. A literature search identified 14 randomized controlled trials (RCTs).
View Article and Find Full Text PDFHypertens Res
December 2024
Heart Research, Murdoch Children's Research Institute, Parkville, VIC, Australia.
To (1) assess the accuracy of the Uscom BP+ oscillometric upper-arm professional blood pressure (BP) monitor in children and adolescents as per the AAMI/ESH/ISO Universal Standard (ISO 81060-2:2018); (2) assess the suitability of a non-standard cuff; and (3) assess the impact of motion artefact on device accuracy and precision. Children and adolescents were recruited to fulfil the sex/cuff distribution criteria of the Universal Standard. Single arm sequential BP measurements were used, the test device measured on deflate with an altered child/adolescent algorithm, using three standard (Extra Small, Small Adult, Adult) and, as exploratory analysis, additionally in one non-standard cuff (Wide Range; WR) (arm circumferences: 12-17, 16-24, 22-32, 22-42 cm, respectively).
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