Víctor Manuel Becerra-Muñoz

Expression of Sterol Regulatory Element-Binding Proteins in epicardial adipose tissue in patients with coronary artery disease and diabetes mellitus: preliminary study

Objectives: Sterol regulatory element-binding proteins (SREBP) genes are crucial in lipid biosynthesis and cardiovascular homeostasis. Their expression in epicardial adipose tissue (EAT) and their influence in the development of coronary artery disease (CAD) and type-2 diabetes mellitus remain to be determined. The aim of our study was to evaluate the expression of SREBP genes in EAT in patients with CAD according to diabetes status and its association with clinical and biochemical data. Methods: SREBP-1 and SREBP-2 mRNA expression levels were measured in EAT from 49 patients with CAD (26 with diabetes) and 23 controls without CAD or diabetes. Results: Both SREBPs mRNA expression were significantly higher in patients with CAD and diabetes (p<0.001) and were identified as independent cardiovascular risk factor for coronary artery disease in patients with type-2 diabetes (SREBP-1: OR 1.7, 95%CI 1.1-2.5, p=0.02; SREBP-2: OR 1.6, 95%CI 1.2-3, p=0.02) and were independently associated with the presence of multivessel CAD, left main and anterior descending artery stenosis, and higher total and LDL cholesterol levels, and lower HDL cholesterol levels, in patients with CAD and diabetes. Conclusions: SREBP genes are expressed in EAT and were higher in CAD patients with diabetes than those patients without CAD or diabetes. SREBP expression was associated as cardiovascular risk factor for the severity of CAD and the poor lipid control. In this preliminary study we suggest the importance of EAT in the lipid metabolism and cardiovascular homeostasis for coronary atherosclerosis of patients with diabetes and highlight a future novel therapeutic target.

Significant mitral regurgitation worsens the prognosis and favors the decision of conservative treatment in octogenarians with severe symptomatic aortic stenosis

INTRODUCTION The coexistence of significant mitral regurgitation (MR) and severe aortic stenosis is prevalent, has a prognostic impact and makes treatment in the elderly population a complex issue. The aim of this study is to determine the prevalence of significant MR among a population of octogenarians and its influence on treatment and prognosis. METHODS We used the data from PEGASO (Pronóstico de la Estenosis Grave Aórtica Sintomática del Octogenario), a prospective registry that consecutively included 928 patients aged ≥80 years with severe symptomatic aortic stenosis. RESULTS The prevalence of significant MR was 8.5% (79 patients) and independently associated with the decision to treat conservatively (odds ratio = 2.28, 95% confidence interval: 1.31-3.95, p = 0.003). The group of patients with significant MR had higher overall mortality at 12 months follow-up (51.9% vs 25%, p < 0.001), which remained on division into subgroups based on the presence of comorbidities (Charlson<5: 49.2% vs 21.9%, p < 0.001; and Charlson ≥5: 62.5% vs 41.7%, p = 0.07). Within the group of patients in whom conservative treatment was performed, those with significant MR had higher mortality at one year (62.7% vs 35%, p < 0.001). MR was a significant independent predictor of overall mortality at 12-month follow-up (hazard ratio = 1.87, 95% confidence interval: 1.09-3.18, p = 0.022). CONCLUSIONS Significant MR has a high prevalence and worsens the prognosis of octogenarian patients with severe symptomatic aortic stenosis, especially in patients with conservative treatment, independently of the existence of comorbidities.

Endocarditis infecciosa sobre válvula aórtica bicúspide: características clínicas, complicaciones y pronóstico

INTRODUCTION Bicuspid aortic valve (BAV) is the most frequent congenital cardiac disease. It is associated to a higher risk of cardiovascular complications, including infective endocarditis (IE). METHODS Retrospective, observational and single centre study that included all patients with IE diagnosed between 1996 and 2014. An analysis was made of the epidemiological, clinical, microbiological and echocardiographic data, complications during hospital admission, need for surgery, in-hospital mortality, and 1-year follow-up. Cases with endocarditis on prosthetic valves or other locations were excluded, as well as those for which the aortic valve morphology had not been accurately defined. A comparative statistical analysis was performed between BAV and tricuspid (TAV). RESULTS Of a total of 328 cases with IE, 118 (35.67%) were on aortic valve, with 18 (16.22%) of them being BAV. The BAV cases were younger than TAV (51±19.06 vs. 60.83±15.73 years, P=.021) and they had less comorbidity (Charlson 0.67±0.77 vs. 1.44±1.64, P=.03).). There was a higher tendency of Staphylococcal origin (38.9 vs. 21.5%, P=.137), and 55.6% showed peri-valvular complications (TAV 16.1%, P=.001), in particular, abscesses (38.9 vs.16.1%, P=.047). BAV was the only predictive factor of peri-valvular complications (OR 7.87, 95% CI; 2.38-26.64, P=.001). Patients with BAV had more surgery during their admission (83.3 vs. 44.1%, P=.004), had less in-hospital mortality, with no statistical significance (5.6 vs. 25.8%, P=.069), and 1-year survival was significantly superior (93.8 vs 69.3%, P=.048). CONCLUSIONS Patients with IE on BAV are young, with low comorbidity. They frequently present with peri-valvular complications and they often require early surgery. Compared to TAV cases, in-hospital mortality is lower and 1-year survival is significantly higher.

Long-term prognostic role of CA-125 in noncongestive patients undergoing a cardiac transplantation

AIM To evaluate the possible relationship between high levels of CA-125 and long-term prognosis in chronic heart failure patients after they undergo a cardiac transplantation (CT). MATERIALS & METHODS We retrospectively studied all patients who underwent a CT and had a previous determination of CA-125. Congestive patients and those whose survival was <1 year after CT were excluded. RESULTS Of 55 patients, 23 had elevated CA-125 levels (>35 U/ml). After CT, survival was significantly inferior in this group (96.3 vs 81%, 84.9 vs 64%, 70.7 vs 32.9% at 2, 5 and 8 years, p = 0.014). CA-125 >35 U/ml was the only factor independently associated to long-term mortality (OR: 3.94; 95% CI: 1.2-12.82; p = 0.023). CONCLUSION Noncongestive patients with high levels of CA-125 had inferior long-term survival after CT.