scholarly journals Particulate Matter-Induced Acute Coronary Syndrome: MicroRNAs as Microregulators for Inflammatory Factors

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Nur Izah Ab Razak ◽  
Nor Eliani Ezani ◽  
Norzian Ismail
Keyword(s):  
Gene Expression ◽  
Air Pollution ◽  
Acute Coronary Syndrome ◽  
Particulate Matter ◽  
Ultrafine Particles ◽  
Inflammatory Factors ◽  
Potential Contribution ◽  
Mortality And Morbidity ◽  
Coronary Syndrome ◽  
Polycyclic Aromatic

The most prevalent cause of mortality and morbidity worldwide is acute coronary syndrome (ACS) and its consequences. Exposure to particulate matter (PM) from air pollution has been shown to impair both. Various plausible pathogenic mechanisms have been identified, including microRNAs (miRNAs), an epigenetic regulator for gene expression. Endogenous miRNAs, average 22-nucleotide RNAs (ribonucleic acid), regulate gene expression through mRNA cleavage or translation repression and can influence proinflammatory gene expression posttranscriptionally. However, little is known about miRNA responses to fine PM (PM2.5, PM10, ultrafine particles, black carbon, and polycyclic aromatic hydrocarbon) from air pollution and their potential contribution to cardiovascular consequences, including systemic inflammation regulation. For the past decades, microRNAs (miRNAs) have emerged as novel, prospective diagnostic and prognostic biomarkers in various illnesses, including ACS. We wanted to outline some of the most important studies in the field and address the possible utility of miRNAs in regulating particulate matter-induced ACS (PMIA) on inflammatory factors in this review.

Assessment Framework for Recognizing Clinical Deterioration in Patients With ACS Undergoing PCI

2021 ◽  
Vol 41 (4) ◽  
pp. 18-28
Author(s):  
Kevin White ◽  
Judy Currey ◽  
Julie Considine
Keyword(s):  
Percutaneous Coronary Intervention ◽  
Acute Coronary Syndrome ◽  
Signs And Symptoms ◽  
Coronary Artery Occlusion ◽  
Coronary Intervention ◽  
Clinical Deterioration ◽  
Access Site ◽  
Mortality And Morbidity ◽  
Coronary Syndrome ◽  
Percutaneous Coronary

Topic Patients with acute coronary syndrome undergoing primary percutaneous coronary intervention are at risk of clinical deterioration that results in similar general signs and symptoms regardless of its cause. However, specific causes and forms of clinical deterioration are associated with key differences in assessment findings. Focused clinical assessments using a modified primary survey enable nurses to rapidly identify the cause and form of clinical deterioration, facilitating targeted treatment. Clinical Relevance Clinical deterioration during percutaneous coronary intervention is associated with increased mortality and morbidity. Previous studies identified nursing inconsistencies when recognizing clinical deterioration, with inconsistent collection of cues and prioritization of cues related to cardiac performance over more sensitive indicators of clinical deterioration. Purpose of Paper To describe a framework to help nurses optimize physiological cue collection to improve recognition of clinical deterioration during periprocedural care of patients undergoing percutaneous coronary intervention for unstable acute coronary syndrome. Content Covered Literature analysis revealed 7 forms of clinical deterioration in patients undergoing percutaneous coronary intervention: coronary artery occlusion, stroke, ventricular rupture, valvular insufficiency, lethal cardiac arrhythmias, access-site and non–access-site bleeding, and anaphylaxis. Evidence for the pathophysiology, incidence, severity, and clinical features of each form of clinical deterioration is identified. A framework is proposed to help nurses conduct highly focused patient assessments, enabling prompt recognition of and response to the specific forms of clinical deterioration that occur in patients undergoing percutaneous coronary intervention.

scholarly journals Ticagrelor and clopidogrel suppress NF-κB to treat acute coronary syndrome

2019 ◽  
Author(s):  
Zhuyin Jia ◽  
Yiwei Huang ◽  
Xiaojun Ji ◽  
Jiaju Sun ◽  
Guosheng Fu
Keyword(s):  
Cell Cycle ◽  
Acute Coronary Syndrome ◽  
Cell Migration ◽  
Cell Viability ◽  
Umbilical Vein ◽  
Quantitative Polymerase Chain Reaction ◽  
Statistical Significance ◽  
Inflammatory Factors ◽  
Mrna Levels ◽  
Coronary Syndrome

Abstract Background: Inflammatory cytokines are involved in acute coronary syndrome (ACS),and NF-kB is the central regulator of inflammation. Moreover, ticagrelor and clopidogrelcan prevent thrombotic events and improve the care of patients with ACS. Thus, we speculated that ticagrelor and clopidogrel relieve ACS by regulating NF-kB pathway. Methods: After human umbilical vein endothelial cells (HUVECs) were cultured with ticagrelor or clopidogrel and given lipopolysaccharide (LPS) and CD14, the mRNA levels of related inflammatory factors, the protein level changes of molecules in the NF-kB pathway, and the changes in cell viability, apoptosis and the cell cycle, cell migration, vascular formation and other vital activities were detected using quantitative Polymerase chain reaction (qPCR), Western blotting and immunofluorescence assay, CCK8， flow cytometry, transwell assay, matrigel, respectively. All data was expressed as the mean ± S.D. The statistical significance of data was assessedby an unpaired two-tailed t-test. Results: Ticagrelor and clopidogrel can suppress the NF-kB pathway by inhibiting the phosphorylation and entry into the nucleus of p65, restraining the degradation of IKBa, improving cell viability, restoring the cell cycle, cell migration and angiogenic ability, and inhibiting apoptosis. Conclusions: Ticagrelor and clopidogrel alleviate cellular dysfunction through suppressing NF-kB signaling to treat acute coronary syndrome.

Evaluation of Serum Level of Interleukin 1 in Patients Suffering from Acute Coronary Syndrome, Admitted to the CCU Ward of AmirAlmomenin Hospital of Zahedan

2021 ◽  
Author(s):  
Hossein Ali Khazaei ◽  
Ahmad Bolouri ◽  
Hony Harati ◽  
Mehdi Mohammadi ◽  
Sayed Mohammad Nasiraldin Tabatabei ◽  
...  
Keyword(s):  
Acute Coronary Syndrome ◽  
Causes Of Death ◽  
Interleukin 1 ◽  
Developed Countries ◽  
Inflammatory Factors ◽  
Coronary Syndrome ◽  
Common Causes ◽  
Artery Disease ◽  
Flow Blockage ◽  
Q Wave

Background: Atherosclerosis is a disease in which the particles of fat builds up in the blood vessel’s walls. This build up leads to blood flow blockage or can cause the arteries to narrow, but until the stenosis of the vessel is not more than 70 percent, there won’t be any obvious symptoms. Symptoms are dependent on the location of the stenosis that can bring about diseases such as, Unstable Angina (UA), Myocardial Infarction with Q Wave (MIQW) and Non Q Wave (NMIQW). The most common causes of death in most developed countries is Coronary Artery Disease (CAD), and since the inflammatory factors are one of the causes of these diseases, we decided to evaluate the level of the Interleukin-1 (IL-1) in patients with acute coronary syndrome. Methods: 90 patients, suffering from the acute coronary syndrome were selected, which were previously diagnosed and referred to a cardiologist in the Imam Ali Ebneh hospital’s cardiac ward, in 2011. Five ml of periphery blood was obtained from each patient, after 24 hours of hospitalization. Using the ELISA method, the level of interleukin-1 was measured in the three groups of patients, each with symptoms of UA, MIQW and MINQW. Results: Our findings, showed the highest level of interleukin-1 in the MIQW patients, with the average of 46.55 pg/ml and, the lowest level in the MINQW patients, with the average of 28.17 pg/ml. Moreover, the average level of IL-1 in the patient’s serum with UA, is determined equal to 31.28 pg/ml. Although, there was no significant correlations between the type of MI development and UA, there was a significant correlation between the level of IL-1 and the type of MI development. Conclusion: Despite the fact, that the level of IL-1 was higher than normal in all the group types, and no significant correlation between the type of MI development and UA was found, there was statistically a significant correlation between the types of MI development and the level of IL-1.

scholarly journals Acute Coronary Syndrome after 17 Years of Bare Metal Stent Implantation: “Very” Very Late Stent Thrombosis

2020 ◽  
Vol 2020 ◽  
pp. 1-5
Author(s):  
Raghavendra Rao K ◽  
S. Reddy ◽  
J. R. Kashyap ◽  
K. Vikas ◽  
Hithesh Reddy ◽  
...  
Keyword(s):  
Acute Coronary Syndrome ◽  
Stent Thrombosis ◽  
Plaque Rupture ◽  
Bare Metal Stents ◽  
Metal Stents ◽  
Bare Metal ◽  
Late Stent Thrombosis ◽  
Very Late Stent Thrombosis ◽  
Mortality And Morbidity ◽  
Coronary Syndrome

Very late stent thrombosis (VLST) is a catastrophic and life-threatening complication after percutaneous coronary intervention which presents as an acute coronary syndrome with significantly high mortality and morbidity. VLST is a rare entity with drug-eluting stents and even rarer with bare metal stents. The exact pathophysiologic mechanism of VLST after BMS implantation is not known although various mechanisms have been proposed. Recently, in-stent neoatherosclerosis with intimal plaque rupture has been proposed as a potential mechanism of VLST after BMS. We report a rare case of VLST occurring 17 years after BMS implantation with angiographic and intravascular imaging evidence which provides insight into the mechanisms of VLST.

scholarly journals Carbon Black Particle Exhibits Size Dependent Toxicity in Human Monocytes

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Devashri Sahu ◽  
G. M. Kannan ◽  
R. Vijayaraghavan
Keyword(s):  
Gene Expression ◽  
Carbon Black ◽  
Ultrafine Particles ◽  
Dna Analysis ◽  
Carbon Black Particle ◽  
Human Monocytes ◽  
Phagocytic Capacity ◽  
Monocyte Chemoattractant Protein 1 ◽  
Mortality And Morbidity ◽  
Micron Size

Increased levels of particulate air pollution are associated with increased respiratory and cardiovascular mortality and morbidity. Some epidemiologic and toxicological researches suggest ultrafine particles (<100 nm) to be more harmful per unit mass than larger particles. In the present study, the effect of particle size (nano and micro) of carbon black (CB) particle on viability, phagocytosis, cytokine induction, and DNA damage in human monocytes, THP-1 cells, was analysed. The cells were incubated with nanosize (~50 nm) and micron (~500 nm) size of CB particles in a concentration range of 50–800 µg/mL. The parameters like MTT assay, phagocytosis assay, ELISA, gene expression, and DNA analysis were studied. Exposure to nano- and micron-sized CB particles showed size- and concentration dependent decrease in cell viability and significant increase in proinflammatory cytokines IL-1β, TNF-αand IL-6 as well as chemokine IL-8 release. Gene expression study showed upregulation of monocyte chemoattractant protein-1 gene while cyclooxygenase-2 gene remained unaffected. Nano CB particles altered the phagocytic capacity of monocytes although micron CB had no significant effect. CB particles did not show any significant effect on DNA of monocytes. The investigations indicate that CB particles in nanosize exhibit higher propensity of inducing cytotoxicity, inflammation, and altered phagocytosis in human monocytes than their micron size.

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