scholarly journals Comprehensive quantification of fuel use by the failing and nonfailing human heart

Science ◽  
2020 ◽  
Vol 370 (6514) ◽  
pp. 364-368 ◽  
Author(s):  
Danielle Murashige ◽  
Cholsoon Jang ◽  
Michael Neinast ◽  
Jonathan J. Edwards ◽  
Alexis Cowan ◽  
...  
Keyword(s):  
Human Heart ◽  
Tricarboxylic Acid Cycle ◽  
Femoral Vein ◽  
Active Protein ◽  
Fuel Use ◽  
Key Driver ◽  
Major Nutrients ◽  
Direct Proportionality ◽  
Circulating Levels ◽  
Comprehensive Mapping

The heart consumes circulating nutrients to fuel lifelong contraction, but a comprehensive mapping of human cardiac fuel use is lacking. We used metabolomics on blood from artery, coronary sinus, and femoral vein in 110 patients with or without heart failure to quantify the uptake and release of 277 metabolites, including all major nutrients, by the human heart and leg. The heart primarily consumed fatty acids and, unexpectedly, little glucose; secreted glutamine and other nitrogen-rich amino acids, indicating active protein breakdown, at a rate ~10 times that of the leg; and released intermediates of the tricarboxylic acid cycle, balancing anaplerosis from amino acid breakdown. Both heart and leg consumed ketones, glutamate, and acetate in direct proportionality to circulating levels, indicating that availability is a key driver for consumption of these substrates. The failing heart consumed more ketones and lactate and had higher rates of proteolysis. These data provide a comprehensive and quantitative picture of human cardiac fuel use.

scholarly journals Adipokines and Metabolic Regulators in Human and Experimental Pulmonary Arterial Hypertension

2021 ◽  
Vol 22 (3) ◽  
pp. 1435
Author(s):  
Aimilia Papathanasiou ◽  
Fotios Spyropoulos ◽  
Zoe Michael ◽  
Kyoung Joung ◽  
Despina Briana ◽  
...  
Keyword(s):  
Pulmonary Hypertension ◽  
Adipose Tissue ◽  
Fatty Acid ◽  
Tricarboxylic Acid Cycle ◽  
Fibroblast Growth Factor 21 ◽  
Mrna Levels ◽  
Rodent Models ◽  
Fatty Acid Binding ◽  
Metabolic Regulators ◽  
Circulating Levels

Pulmonary hypertension (PH) is associated with meta-inflammation related to obesity but the role of adipose tissue in PH pathogenesis is unknown. We hypothesized that adipose tissue-derived metabolic regulators are altered in human and experimental PH. We measured circulating levels of fatty acid binding protein 4 (FABP-4), fibroblast growth factor -21 (FGF-21), adiponectin, and the mRNA levels of FABP-4, FGF-21, and peroxisome proliferator-activated receptor γ (PPARγ) in lung tissue of patients with idiopathic PH and healthy controls. We also evaluated lung and adipose tissue expression of these mediators in the three most commonly used experimental rodent models of pulmonary hypertension. Circulating levels of FABP-4, FGF-21, and adiponectin were significantly elevated in PH patients compared to controls and the mRNA levels of these regulators and PPARγ were also significantly increased in human PH lungs and in the lungs of rats with experimental PH compared to controls. These findings were coupled with increased levels of adipose tissue mRNA of genes related to glucose uptake, glycolysis, tricarboxylic acid cycle, and fatty acid oxidation in experimental PH. Our results support that metabolic alterations in human PH are recapitulated in rodent models of the disease and suggest that adipose tissue may contribute to PH pathogenesis.

Quantification of fuel use in the human heart

2020 ◽  
Vol 18 (1) ◽  
pp. 3-3
Author(s):  
Andrew Robson
Keyword(s):  
Human Heart ◽  
Fuel Use

40 MicroRNAs in the human heart: a clue to fetal gene reprogramming in heart failure

2007 ◽  
Vol 6 (1) ◽  
pp. 3-3
Author(s):  
T THUM ◽  
P GALUPPO ◽  
S KNEITZ ◽  
C WOLF ◽  
L VANLAAKE ◽  
...  
Keyword(s):  
Heart Failure ◽  
Human Heart

Proximal deep venous thrombosis following PTA of the superficial femoral artery – an obligation to disclose a complication that is rarely taken into account

VASA ◽  
2006 ◽  
Vol 35 (1) ◽  
pp. 41-44 ◽  
Author(s):  
Klein-Weigel ◽  
Pillokat ◽  
Klemens ◽  
Köning ◽  
Wolbergs ◽  
...  
Keyword(s):  
Venous Thrombosis ◽  
Deep Venous Thrombosis ◽  
Femoral Artery ◽  
Superficial Femoral Artery ◽  
Rare Complication ◽  
Femoral Vein ◽  
Vein Thrombosis ◽  
Explicit Information ◽  
Life Threatening ◽  
Legal Consequences

We report two cases of femoral vein thrombosis after arterial PTA and subsequent pressure stasis. We discuss the legal consequences of these complications for information policies. Because venous thrombembolism following an arterial PTA might cause serious sequel or life threatening complications, there is a clear obligation for explicit information of the patients about this rare complication.

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