Publications by authors named "N Hiraki"

Background: Unexpectedly low natriuretic peptide (NP) levels in proportion to heart failure severity are often observed in obese individuals. However, the magnitude of NP elevation in response to acute cardiac stress in obesity has not yet been extensively studied. This study aimed to determine the impact of obesity on the increase in plasma NP in response to cardiac hemodynamic stress during acute coronary syndrome (ACS) attacks.

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In addition to the classical actions of hemodynamic regulation, natriuretic peptides (NPs) interact with various neurohumoral factors that are deeply involved in the pathophysiology of cardiovascular diseases. However, their effects on the hypothalamic-pituitary-adrenal (HPA) axis, which is activated under acute high-stress conditions in acute coronary syndrome (ACS), remain largely unknown. We investigated the impact of plasma B-type NP (BNP) on plasma adrenocorticotropic hormone (ACTH)-cortisol levels during the acute phase of ACS ischemic attacks.

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Objective: High-fat diet (HFD) feeding stimulates fat accumulation in mammals and Drosophila. In the present study, we examined whether simultaneous feeding of familiar anti-obesity drugs, quercetin glycosides (QG) and epigallocatechin gallate (EGCG), to Drosophila has the same suppressive effect on fat accumulation as previously reported in rats and mice. To understand the underlying molecular mechanisms of HFD diet-induced obesity and the suppression effect of the drugs, we performed transcriptome analyses.

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