Observation on the Application Effect of Stressor Perception and Response Meticulous Nursing in the Perioperative Period of Acute Myocardial Infarction.

Objective: To investigate the clinical value of stressor perception-based meticulous nursing measures during the perioperative period of percutaneous coronary intervention (PCI) in patients with acute myocardial infarction (AMI). Methods and Design: A prospective randomized trial was conducted involving 104 AMI patients undergoing PCI from March 2021 to March 2022. Patients were divided into an "intervention group" and a "routine group" based on consultation numbers, with equal cases in each group. PCI procedures were performed by the same group of doctors in both groups and that basic treatment measures were similar. Intervention and Comparison: The intervention group received meticulous nursing measures based on stressor perception during the perioperative period, while the routine group received standard care. Outcome measures: The study compared treatment effects, perioperative sleep quality, negative emotion scores, and perioperative complication rates between the two groups. Results Overview: The patients in the intervention group and the conventional group were statistically similar in terms of operative time, X-ray fluoroscopy time, contrast agent dosage, catheter lab nurse preparation time, catheter lab-balloon dilation time, portal-ball time, and PCI success rate (P > .05). In the post-PCI assessment of negative emotions in both groups, the total scores of depression, anxiety, extroverted irritability, and negative emotion scores in the intervention group were higher than those in the routine group (P < .05). In the post-PCI assessment of sleep quality in both groups, subjective sleep quality score, sleep delay score, and total PSQI score in the intervention group were lower than those in the routine group (P < .05). The rate of surgical complications was 7.69% in the intervention group and 15.38% in the routine group, and the differences between the two groups were not statistically significant (P > .05). Conclusion: While meticulous nursing measures based on stressor perception did not notably enhance the effectiveness of PCI, they did significantly improve patients' negative emotions and sleep quality.

Nuclear ATR lysine-tyrosylation protects against heart failure by activating DNA damage response.

Dysregulated amino acid increases the risk for heart failure (HF) via unclear mechanisms. Here, we find that increased plasma tyrosine and phenylalanine levels are associated with HF. Increasing tyrosine or phenylalanine by high-tyrosine or high-phenylalanine chow feeding exacerbates HF phenotypes in transverse aortic constriction and isoproterenol infusion mice models. Knocking down phenylalanine dehydrogenase abolishes the effect of phenylalanine, indicating that phenylalanine functions by converting to tyrosine. Mechanistically, tyrosyl-tRNA synthetase (YARS) binds to ataxia telangiectasia and Rad3-related gene (ATR), catalyzes lysine tyrosylation (K-Tyr) of ATR, and activates the DNA damage response (DDR) in the nucleus. Increased tyrosine inhibits the nuclear localization of YARS, inhibits the ATR-mediated DDR, accumulates DNA damage, and elevates cardiomyocyte apoptosis. Enhancing ATR K-Tyr by overexpressing YARS, restricting tyrosine, or supplementing tyrosinol, a structural analog of tyrosine, promotes YARS nuclear localization and alleviates HF in mice. Our findings implicate facilitating YARS nuclear translocation as a potential preventive and/or interfering measure against HF.

A comprehensive genome-scale model for Rhodosporidium toruloides IFO0880 accounting for functional genomics and phenotypic data.

Rhodosporidium toruloides is a red, basidiomycetes yeast that can accumulate a large amount of lipids and produce carotenoids. To better assess this non-model yeast's metabolic capabilities, we reconstructed a genome-scale model of R. toruloides IFO0880's metabolic network (iRhto1108) accounting for 2204 reactions, 1985 metabolites and 1108 genes. In this work, we integrated and supplemented the current knowledge with in-house generated biomass composition and experimental measurements pertaining to the organism's metabolic capabilities. Predictions of genotype-phenotype relations were improved through manual curation of gene-protein-reaction rules for 543 reactions leading to correct recapitulations of 84.5% of gene essentiality data (sensitivity of 94.3% and specificity of 53.8%). Organism-specific macromolecular composition and ATP maintenance requirements were experimentally measured for two separate growth conditions: (i) carbon and (ii) nitrogen limitations. Overall, iRhto1108 reproduced R. toruloides's utilization capabilities for 18 alternate substrates, matched measured wild-type growth yield, and recapitulated the viability of 772 out of 819 deletion mutants. As a demonstration to the model's fidelity in guiding engineering interventions, the OptForce procedure was applied on iRhto1108 for triacylglycerol overproduction. Suggested interventions recapitulated many of the previous successful implementations of genetic modifications and put forth a few new ones.