The effect of bempedoic acid an ATP-citrate lyase inhibitor on cardiovascular risk factors in rats with experimentally induced myocardial infarction and hyperlipidemia.

Control of hyperlipidemia is believed to reduce major cardiovascular events such as cardiovascular death, myocardial infarction, nonfatal stroke, hospitalization for unstable angina, and coronary revascularization. The benefits of monotherapy with Bempedoic acid (BA) as a hypolipidemic agent given after induction of myocardial infarction (MI) in reducing the risk of acute MI worth being investigated, therefore this study was designed to investigate the effectiveness of Bempedoic acid on reducing cardiovascular risk factors in rats with induced hyperlipidemia and myocardial infarction compared to Rosuvastatin. Male albino rats (n=40) were divided into five equal groups, each with eight rats, the first group served as a negative control group, the second group (diet-induced hyperlipidemia and Isoprenaline induced myocardial infarction) served as a positive control group, the third group (diet-induced hyperlipidemia and Isoprenaline induced myocardial infarction) received daily oral administration of Rosuvastatin for 12 weeks, the fourth group (diet-induced hyperlipidemia, DIH) received Bempedoic acid for 4 weeks as prophylaxis and then myocardial infarction was induced and Bempedoic acid administration was continued for the remaining 8 weeks, and the fifth group (diet-induced hyperlipidemia and Isoprenaline induced myocardial infarction) received a daily oral administration of Bempedoic acid for 12 weeks as a treatment. After 12 weeks, blood samples were withdrawn by cardiac puncture for measuring and evaluating lipid profiles and other parameters. Bempedoic acid and Rosuvastatin significantly reduce mean serum levels of lipid profiles; Total cholesterol, LDL and triglyceride, increase HDL and reduce cardiac enzyme levels as compared with the positive control group. The findings from this study suggested that Bempedoic acid as monotherapy either as a therapy or as prophylaxis was effective in reducing lipid parameters, LDL, Tch, and TG and cardiac enzymes creatine kinase-MB (CK-MB) and serum level of cardiac troponin-I (cTn-I) compared with the positive control group and was not superior to Rosuvastatin in these parameters but taking BA as prophylaxis could prevent the morbidity with cardiovascular events as it was effective in reducing the above parameters by greater percentages than BA and Rosuvastatin therapy.. Both drugs showed similar profiles in blood pressure and heart rate measurements.

The management of differentiated thyroid cancer using 123I for imaging to assess the need for 131I therapy.

BACKGROUND: Follow-up of 131I whole-body scanning after 131I ablation is associated with potential stunning. Previous studies have suggested that, for scanning, 123I is more sensitive than 131I in identifying thyroid tissue, but its specificity when positive is less certain. AIM: The use of 123I as an imaging agent in place of serial 131I imaging has been evaluated in the surveillance and treatment of differentiated thyroid carcinoma. RESULTS: A total of 186 studies in 136 patients with differentiated thyroid carcinoma were evaluated after total or near total thyroidectomy followed by 131I ablation. In 125 studies 123I scanning was negative and no 131I therapy was given; four patients were positive on 123I scanning but for other reasons no 131I therapy was given. In 48/49 patients a positive 123I scan was followed by positive 131I therapeutic uptake. Only one patient failed to show positive uptake of I when first treated and she subsequently demonstrated uptake on a second therapy. CONCLUSION: High-dose 123I imaging is the correct predictor of the 131I post-therapy scan findings in most cases, at an administered activity that avoids stunning. As a diagnostic agent it is preferable to 131I in differentiated thyroid carcinoma.

The prospective clinical and scintigraphic assessment of patients with preserved left ventricular systolic function after transmyocardial laser revascularisation.

AIM: To analyse the clinical outcome and myocardial perfusion and function after transmyocardial revascularisation (TMR) in patients with normal left ventricular function and multivessel coronary artery disease non-amenable for standard revascularisation. METHOD AND RESULTS: Twenty three severely symptomatic patients (CCS score median 4) with normal left ventricular systolic function but coronaries non-amenable for either PTCA or CABG were subjected to TMR. The angina score, left ventricular systolic and diastolic function in radionuclide ventriculography at rest, exercise tolerance and myocardial perfusion--Thallium-201 SPECT (adenosine stress 74 and 37 MBq under nitrate cover) were evaluated before and 3, 6, 12 months post-operatively. After an average of 40 +/- 12 (range 14-56) TMR channels angina score decreased significantly (p< 0.0001) and the exercise tolerance increased (from 6.0 +/- 4.5 to 9.1 +/- 4.6 after 6 months, p< 0.05) in 21 patients. During the follow up period two patients had a myocardial infarction and one committed suicide after 6 months. Ejection fraction dropped significantly only after 1 year post-TMR from 70 +/- 13 to 63 +/- 0.13%, p < 0.05. The overall perfusion improved initially in 14 patients with subsequent deterioration in time. The changes in segmental perfusion were not associated with the symptomatic improvement. CONCLUSION: Transmyocardial revascularisation in patients with normal ejection fraction may improve the angina class, exercise tolerance and overall but not segmental perfusion and does not show any immediate effect on left ventricular function.