Impact of quercetin in patients with myocardial infarction. A multicenter, randomized, and open-label pilot study.

OBJECTIVE: Myocardial infarction (MI) is one of the leading causes of death in the world. Early myocardial reperfusion improves acute MI survival. Bioflavonoid quercetin is known to have antioxidant, anti-inflammatory, and anti-proliferative properties. The presented pilot study aims to investigate the cardioprotective effect of quercetin on infarct size limiting in patients with ST-segment elevation myocardial infarction (STEMI). METHODS: Patients (n = 143) with first anterior STEMI within 6 hours from symptoms onset were included in this open-label multicenter pilot study. Patients were randomized either into quercetin group (n = 70) in addition to standard treatment or recommended therapy alone group (control group, n = 73). Quercetin infusions were initiated before reperfusion and repeated during the next 5 days. The infarct size assessed using creatine kinase-myocardial band area under curve (CK-MB AUC) was the primary study outcome. RESULTS: The study arms did not differ in demographics, time to admission, and main clinical data. The median early CK-MB AUC was significantly lower in quercetin group than in controls (8036 ± 7594 vs 11219 ± 8146 U × 1 h/L, p = 0.015). Intravenous quercetin administration was associated with less reperfusion-induced intramyocardial hemorrhage by Cardiac Magnetic Resonance on Day 3 (11.1% of patients in quercetin group vs 53.3% of patients in control group, p < 0.024). There were no significant differences in left ventricle ejection fraction and LV remodeling indicators. CONCLUSION: Our pilot study is the first to demonstrate novel insight into ischemia/reperfusion damage in STEMI patients. The addition of quercetin to standard STEMI therapy limits infarct size and prevents intramyocardial hemorrhage after the first anterior STEMI. Further research will be necessary to both validate and expand upon these findings.

AC-Mode of Chemotherapy as a Trigger of Cardiac Syndrome X: A Case Study.

In the period of dynamic development of pharmacological possibilities in the modern oncology, unfortunately, the issue of cardiotoxicity of chemotherapy did not lost its urgent value. Cardiotoxicity implies structural and functional myocardial alteration, together with an increase in the concentration of highly sensitive markers of myocardial necrosis, in particular T and I troponins, and N-terminal pro-BNP, as well as with a subclinical or clinical decrease in the LVEF. It is noteworthy that cardiotoxicity is manifested not only by the development of anthracycline cardiomyopathy with a high risk of convention into heart failure. It also can cause various cardiovascular pathologies, in particular cardiac syndrome X. This study described chemotherapy-induced microvascular angina in 23-year-old otherwise heathy woman. The diagnosis is challenging for doctors, since microvascular flow may be only detected by using functional test.

Cardio-Oncology Educational Program: National Survey as the First Step to Start.

Aim: The collaboration of cardiologists, general practitioners (GPs), and oncologists is crucial in cancer patient management. We carried out a national-based survey-The Ukrainian National Survey (UkrNatSurv)-on behalf of the Cardio-Oncology (CO) Working Group (WG) of the Ukrainian Society of Cardiology to analyze the level of knowledge in cardio-oncology. Methods: A short questionnaire was presented to specialists involved in the management of cancer patients across the country. The questionnaire was made up of eight questions concerning referred cancer patient number, CV complications of cancer therapy, diagnostic methods to detect cardiotoxicity, and drugs used for its treatment. Results: A total of 426 questionnaires of medical specialists from different regions of Ukraine were collected and analyzed; the majority of respondents were cardiologists (190), followed by GPs (177), 40 oncologists (mainly chemotherapists and hematologists), other -19 (imaging specialists, neurologists, endocrinologists, etc.). All responders were equally involved in the management of cancer patients. However, less than half of the patients have been seen before the start of cancer therapy. GPs observe the majority of patients after the end of treatment. All doctors are sufficiently aware of cancer therapy-associated CV complications. However, the necessary diagnostic tools, mostly biomarkers, are not used widely by different specialists. The criteria for cardiotoxicity, in particular, the level of reduction of the left ventricular ejection fraction (LVEF) as a marker of LV dysfunction, are not clearly understood. The specific knowledge in the management of CV complications in cancer is required. Conclusion: UkrNatSurv is the first survey in Ukraine to investigate the awareness of CO care provided to cancer patients with CV diseases (CVD) or developed CV complications. Providing such surveys among doctors involved in CO is an excellent tool to investigate the knowledge gaps in clinical practice. Therefore, the primary task is to develop a national educational CO program.