Beyond their established hypoglycemic, cardioprotective, and nephroprotective properties, sodium–glucose cotransporters 2 (SGLT2) inhibitors exert other pleiotropic actions on blood pressure levels, body weight, and lipid metabolism. Blood pressure (BP) reduction varies based on the background history, including an effect on systolic, diastolic BP, and 24 h BP measurements. The reduction in body weight between 1 and 2 kg for the first months is caused by a reduction in visceral and subcutaneous fat due to glycosuria and loss of calories. Regarding lipid metabolism, a reduction in triglycerides and an increase in total cholesterol, high-density lipoprotein (HDL), and low-density lipoprotein (LDL) have been reported, although these alterations are small and could provide additional cardiovascular protection. Various pathophysiologic mechanisms have been proposed to explain the above-mentioned pleiotropic actions of SGLT2 inhibitors. Natriuresis, osmotic diuresis, body weight reduction, amelioration of endothelial dysfunction and arterial stiffness, sympathetic tone decrease, and uric acid reduction are among those that have been suggested for BP reduction. Apart from glycosuria and calorie loss, other mechanisms seem to contribute to body weight reduction, such as the beiging of white adipose tissue, while the mechanisms involved in lipid metabolism alterations have not been clearly determined.
Renovascular hypertension (RVH) remains among the most prevalent and important, but also potentially reversible, causes of secondary hypertension. The predominant causes of renal artery stenosis (RAS) are atherosclerotic renovascular arterial stenosis (ARAS) and renal fibromuscular dysplasia. This condition can lead to progressive renal injury, cardiovascular complications and ‘flash pulmonary edema’. Duplex Doppler ultrasonography, computed tomographic angiography and magnetic resonance angiography are the most commonly used diagnostic methods. There are three therapeutic options available: medical therapy including renin-angiotensin-aldosterone system antagonists, lipid-lowering agents, and antiplatelet therapy, percutaneous angioplasty with or without stent placement and surgical revascularization. Three large trials failed to demonstrate the superiority of renal artery revascularization over pharmaceutical therapy in controlling blood pressure and preserving renal function. For this reason, today revascularization is only recommended for patients with progressive worsening of renal function, recurrent ‘flash pulmonary edema’ and rapid increase in antihypertensive requirement in patients with previously well-controlled hypertension. However, more properly designed trials are needed in order to identify which patient populations would probably benefit from renal revascularization.
Background and Objectives: Diabetic kidney disease (DKD), expressed either as albuminuria, low estimated glomerular filtration rate (eGFR) or both, and sexual dysfunction (SD), are common complications among type 2 diabetes mellitus (T2DM) patients. This study aims to assess whether an association exists between DKD and SD, erectile dysfunction (ED) or female sexual dysfunction (FSD) in a T2DM population. Materials and Methods: A cross-sectional study was designed and conducted among T2DM patients. The presence of SD was assessed using the International Index of Erectile Function and the Female Sexual Function Index questionnaires for males and females, respectively, and patients were evaluated for DKD. Results: Overall, 80 patients, 50 males and 30 females, agreed to participate. Sexual dysfunction was present in 80% of the study population. Among the participants, 45% had DKD, 38.5% had albuminuria and/or proteinuria and 24.1% had an eGFR below 60 mL/min/1.73 m2. The eGFR was associated with SD, ED and FSD. Moreover, SD and ED were proven as significant determinants for lower eGFR values in multiple linear regression analyses. DKD was associated with lower lubrication scores and eGFR was associated with lower desire, arousal, lubrication and total scores; however, the multivariate linear regression analyses showed no significant associations between them. Older age resulted in significantly lower arousal, lubrication, orgasm and total FSFI scores. Conclusions: SD is commonly encountered in older T2DM patients and DKD affects almost half of them. The eGFR has been significantly associated with SD, ED and FSD, while SD and ED were proven to be significant determinants for the eGFR levels.
Background: Heart failure affects a substantial proportion of the adult population, with an estimated prevalence of 1-2% in developed countries. Over the previous decades many prediction models have been introduced for this specific population in an attempt to better stratify and manage heart failure patients. Objective: The aim of this study is the systematic review of recent, relevant literature regarding risk scores or prediction models in ambulatory patients with an established diagnosis of chronic heart failure. Methods: We conducted a systematic search of the literature in PubMed and CENTRAL from their inception up till December 2019 for studies assessing the performance of risk scores and prediction models and original research studies. Grey literature was searched as well. This review is reported in accordance with the Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) statement. Results: We included 16 eligible studies in this systematic review. Major heart failure risk scores derived from large heart failure populations were among the included studies. Due to significant heterogeneity regarding the main endpoints, direct comparison of the included prediction scores was inevitable. The majority referred to patients with heart failure with reduced ejection fraction, while only two out of 16 prediction scores have been developed exclusively for heart failure patients with preserved ejection fraction. Ischemic heart disease was the most common aetiology of heart failure in the included studies. Finally, more than half of the prediction scores have not been externally validated. Conclusion: Prediction models aiming at heart failure patients with a preserved or mid-range ejection fraction are lacking. Prediction scores incorporating recent advances in pharmacotherapy should be developed in the future.
Erectile dysfunction is commonly encountered in diabetic patients and in patients with metabolic syndrome; however, only a few studies have assessed patients with metabolic syndrome and type 2 diabetes mellitus (T2DM) regarding their sexual function. The purpose of this study is to examine the effect of metabolic syndrome and its components on the erectile function of T2DM patients. A cross-sectional study including T2DM patients was conducted from November 2018 until November 2020. Participants were evaluated for the presence of metabolic syndrome and their sexual function was assessed using the International Index of Erectile Function (IIEF) questionnaire. A total of 45 consecutive male patients participated in this study. Metabolic syndrome was diagnosed in 84.4% and erectile dysfunction (ED) in 86.7% of them. Metabolic syndrome was not associated with ED or ED severity. Among metabolic syndrome components, only high-density lipoprotein cholesterol (HDL) was associated with ED [x2 (1, n = 45) = 3.894, p = 0.048; OR = 5.5 (95% CI: 0.890–33.99)] and with the IIEF erectile function scores (median 23 vs. 18, U = 75, p = 0.012). Multiple regression analyses showed that HDL was non-significantly associated with the IIEF erectile function scores. In conclusion, among T2DM patients HDL is associated with ED.