Circadian blood pressure rhythm and intimal-medial thickness changes in non-dipper normotensive patients

We investigated 25 non-dipper normotensive vs 25 dipper normotensive patients. The aim of our study was to evaluate carotid intimal-medial thickness (IMT) in the two groups. At the admission patients underwent anamnesis and general examination, blood sampling for lipid profile measurement, glycemia, homocysteine, ambulatory blood pressure measurement to assess the circadian blood pressure profile, and Doppler ultrasound to measure carotid intimal-medial thickness (IMT). Our results showed that IMT is significantly higher in the non-dipper group (P&lt;0.006) vs dippers. Non-dipper status has been recognized in several studies a condition with increased risk for target organ damage in hypertensive and normotensive subjects. However, to our knowledge, a possible relationship between IMT and normotensive non-dipper patients has not yet clearly investigated. Our study instead has clearly demonstrated a significant relationship between IMT and the non-dipper status.</p

Circadian blood pressure rhythm and intimal media thickness changes in non-dipper normotensives patients

We investigated 25 non-dipper normotensive vs 25 dipper normotensive patients. The aim of our study was to evaluate carotid intimal-medial thickness (IMT) in the two groups. At the admission patients underwent anamnesis and general examination, blood sampling for lipid profile measurement, glycemia, homocysteine, ambulatory blood pressure measurement to assess the circadian blood pressure profile, and Doppler ultrasound to measure carotid IMT. Our results showed that IMT is significantly higher in the non-dipper group (P<0.006) vs dippers. Non-dipper status has been recognized in several studies as a condition with increased risk for target organ damage in hypertensive and normotensive subjects. However, to our knowledge, a possible relationship between IMT and normotensive non-dipper patients has not yet been clearly investigated. Our study instead has clearly demonstrated a significant relationship between IMT and the non-dipper status

Rosiglitazone induces autophagy in H295R and cell cycle deregulation in SW13 adrenocortical cancer cells

Thiazolidinediones, specific peroxisome proliferator-activated receptor-gamma (PPAR-gamma) ligands, used in type-2 diabetes therapy, show favourable effects in several cancer cells. In this study we demonstrate that the growth of H295R and SW13 adrenocortical cancer cells is inhibited by rosiglitazone, a thiazolidinediones member, even though the mechanisms underlying this effect appeared to be cell-specific. Treatment with GW9662, a selective PPAR-gamma-inhibitor, showed that rosiglitazone acts through both PPAR-gamma-dependent and -independent mechanisms in H295R, while in SW13 cells the effect seems to be independent of PPAR-gamma. H295R cells treated with rosiglitazone undergo an autophagic process, leading to morphological changes detectable by electron microscopy and an increased expression of specific proteins such as AMPK alpha and beclin-1. The autophagy seems to be independent of PPAR-gamma activation and could be related to an increase in oxidative stress mediated by reactive oxygen species production with the disruption of the mitochondrial membrane potential, triggered by rosiglitazone. In SW13 cells, flow cytometry analysis showed an arrest in the G0/G1 phase of the cell cycle with a decrease of cyclin E and cdk2 activity, following the administration of rosiglitazone. Our data show the potential role of rosiglitazone in the therapeutic approach to adrenocortical carcinoma and indicate the molecular mechanisms at the base of its antiproliferative effects, which appear to be manifold and cell-specific in adrenocortical cancer lines.(C) 2011 Elsevier Inc. All rights reserved

Genomic epidemiology of the main SARS‐CoV‐2 variants in Italy between summer 2020 and winter 2021

Since the beginning of the pandemic, SARS-CoV-2 has shown a great genomic variability, resulting in the continuous emergence of new variants that has made their global monitoring and study a priority. This work aimed to study the genomic heterogeneity, the temporal origin, the rate of viral evolution and the population dynamics of the main circulating variants (20E.EU1, Alpha and Delta) in Italy, in August 2020-January 2022 period. For phylogenetic analyses, three datasets were set up, each for a different main lineage/variant circulating in Italy in that time including other Italian and International sequences of the same lineage/variant, available in GISAID sampled in the same times. The international dataset showed 26 (23% Italians, 23% singleton, 54% mixed), 40 (60% mixed, 37.5% Italians, 1 singleton) and 42 (85.7% mixed, 9.5% singleton, 4.8% Italians) clusters with at least one Italian sequence, in 20E.EU1 clade, Alpha and Delta variants, respectively. The estimation of tMRCAs in the Italian clusters (including &gt;70% of genomes from Italy) showed that in all the lineage/variant, the earliest clusters were the largest in size and the most persistent in time and frequently mixed. Isolates from the major Italian Islands tended to segregate in clusters more frequently than those from other part of Italy. The study of infection dynamics showed a positive correlation between the trend in the effective number of infections estimated by BSP model and the R-e curves estimated by birth-death skyline plot. The present work highlighted different evolutionary dynamics of studied lineages with high concordance between epidemiological parameters estimation and phylodynamic trends suggesting that the mechanism of replacement of the SARS-CoV-2 variants must be related to a complex of factors involving the transmissibility, as well as the implementation of control measures, and the level of cross-immunization within the population

Prevalence of hypertension in a large cohort of Italian hemodialysis patients: results of a cross-sectional study

Background: Hypertension is very common among patients receiving hemodialysis; however, little is known about its prevalence and control following the publication of the Kidney Disease Outcomes Quality Initiative (KDOQI) recommendations. Methods: This was a multicenter, observational, prospective, cross-sectional study aimed at evaluating the prevalence of hypertension and its awareness in a large sample of hemodialysis patients in Italy, and assessing possible relationships between high blood pressure (BP) values and traditional and nontraditional cardiovascular risk factors. Predialysis hypertension was defined as systolic BP (SBP)/diastolic BP (DBP) ≥140/90 mm Hg, and postdialysis hypertension as SBP/ DBP ≥130/80 mm Hg or the use of antihypertensive medications. Results: We collected data for 4,022 patients (men/ women 2,478/1,544, mean age 67.14 ± 14.08 years) from 77 dialysis centers. Of these, 2,832 patients (70.3%) were defined as having predialysis hypertension. At logistic regression analysis, diabetes, months on dialysis, serum albumin levels and treatment with erythropoiesis-stimulating agent (ESA) were independent factors predicting predialysis hypertension. Antihypertensive agents were used in 57.7% of the patients, leading to adequate BP control in only 40% of them. Factors independently predicting inadequate BP control were diabetes, ESA therapy, high serum cholesterol and higher Kt/V values. Conclusions: Hypertension is highly prevalent in this Italian hemodialysis population; achievement of adequate BP control is inadequate. It is unclear whether this may reflect suboptimal diagnosis or treatment of hypertension or, more likely, the allowance of higher predialysis BP values to try to avoid abrupt BP falls during the dialytic session