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Abstract: Sleep is an active nervous process, which is structured in phases characterized by subsequent cycles of various psycho-physiological phenomena. It performs vital, yet mysterious functions and is in all likelihood involved in many processes, including cognitive processes. In old age the internal structure of sleep changes, but these physiological variations allow, in healthy subjects, a satisfactory quantity and quality of sleep. Until now there have been no literature reports of studies regarding sleep quality in extreme old age. Our work describes the investigation of the quality of sleep in a sample of 180 centenarians selected from the registered residents of Rome. We have studied sleep disorders, related pathologies and pharmacological treatments. The results of the study show good sleep quality for 57.4% of the sample group; 35.2% complain of medium intensity problems, significantly related to angina pectoris and to chronic obstructive bronchopneumopathy. Only 7.4% of the subjects showed severe problems, significantly related with cognitive deficiency and lower survival rate. The results of our study confirm, in centenarians as in the elderly, the existence of a positive correlation between sleep quality, survival and successful aging. [Copyright &y& Elsevier]

Abstract: Everybody is subject to a physical clock, determining the calendar age, and also to a biological clock, the speed of which depends on the interaction between the genetic reserves and the environment. Stress is taken into account more and more as one of the main factors responsible for the acceleration of the biological clock and the dishomogeneity of the aging process. Despite the fact that centenarians are prone to chronic stress due to a progressive loss of self-sufficiency, more than a half of our centenarians were not depressed and had a low trait-anxiety: they showed an emotional tendency to react with a low anxiety-intensity to stressful conditions. Their good physical conditions may be explained by a positive character-disposition and by strong adaptability to the adversities of the life. Personality traits can be reduced to five basic phenomena, the so-called Big Five: extroversion, agreeableness, conscientiousness, openness to experience and emotional stability. In our sample 65.4% were classified as extroverted, 50% as open minded and 34.5% showed good emotional stability. In the centenarians aging of all apparatuses was slowed down by a healthy lifestyle and also by good adaptability that allowed for a positive and effective response to stress throughout their whole lives. [Copyright &y& Elsevier]

Abstract: Objective: Isolated Systolic Hypertension (ISH) is a known risk factor for cognitive impairment, but the time of onset of neurocognitive changes relative to the onset of ISH has yet to be established. The purpose of this study was to investigate the relationship between systolic BP values and neurocognitive function in the early stages of ISH. Methods: Twenty elderly patients with recently (<2 years) diagnosed ISH and 10 elderly normotensive controls underwent Ambulatory Blood Pressure Monitoring (ABPM) and neurocognitive assessment, performed using the Mini Mental State Examination (MMSE), and the recording of ERPs with an odd ball acoustic paradigm. Results: There were no significant differences in MMSE scores or in the P300 latency between ISH patients and controls. The N2 latency was significantly higher in ISH patients vs. controls (p <0.0001), and showed a significant association with both clinical and ambulatory systolic BP and pulse pressure values in the overall study population. Conclusions: These findings suggest the existence of early subclinical alterations in neurocognitive function in early ISH, detectable through ERPs. Significance: Our findings underscore the ISH may constitute a threat to neurocognitive health in the elderly. [Copyright &y& Elsevier]

Background and aims Augmenter of Liver Regeneration is a protein encoded by the Growth Factor Erv1-Like gene. Its biological properties are crucial for cell survival since knock-out mice for Growth Factor Erv1-Like gene do not survive. In this study, we injected hepatotropic adenoviral particles harboring oligonucleotide sequences against Growth Factor Erv1-Like gene into 70% partially hepatectomized rats and studied the effect of gene silencing on the progression liver regeneration. Methods Partially hepatectomized rats were divided into three groups of animals and, before surgery, received either phosphate buffer saline, or adenoviral particles alone or adenoviral particles harboring the oligonucleotide silencing sequence. In each group, rats were sacrificed at 12, 24 and 48h after surgery. Liver tissues were collected to analyze the expression of Augmenter of Liver Regeneration, Bax, Bcl-2 and activated Caspase-9 and -3, as well as hepatocyte proliferation and apoptosis, polyamines levels and histological and ultrastructural features. Results Growth Factor Erv1-Like gene silencing reduced the compensatory hepatocellular proliferation triggered by surgery through (i) the reduction of polyamines synthesis, hepatocyte proliferation and anti-apoptotic gene expression and (ii) the increase of pro-apoptotic gene expression and caspase activation. Conclusions For the first time, using a technique of gene silencing in vivo, our results demonstrate that Growth Factor Erv1-Like gene knock-down, i.e., the lack of Augmenter of Liver Regeneration, modifies the expression of genes involved in cell apoptosis and inhibits early phase of DNA synthesis. As a consequence, a promotion of cell death and a reduction of cell proliferation occurs. [ABSTRACT FROM AUTHOR]

References: Several studies have shown a relationship between BISH and cerebrovascular events, but no studies have investigated a relationship with cognitive function. The aim was to assess the cognitive function in the elderly with recent BISH. According to WHO Guidelines (1999), we selected 10 elderly normotensives, 10 elderly with recently diagnosed (<2 years) BISH, and 10 elderly with recently diagnosed (<2 years) isolated systolic hypertension (ISH). They were submitted to 24-hr ambulatory blood pressure (BP) monitoring (ABPM) and to cognitive assessment by mini mental state examination (MMSE) and the recording of brain ERP, of type N2 and P300. The elderly with BISH, compared to normotensives, showed N2 wave latency values significantly higher, but similar P300 potential latency values and MMSE scores. The elderly with ISH showed N2 and P300 latency significantly higher than the normotensives. The gradual increase of the ERP latency values of the BISH and ISH elderly, in comparison to the normotensives, seems to indicate a gradual alteration of the cognitive processes related to the increase of BP. [Copyright &y& Elsevier]

Background: To investigate the feasibility, image quality, and clinical implications of a combined ECG-gated and helical acquisition mode in a computed tomography angiography (CTA) protocol in patients scheduled for transcatheter aortic valve implantation (TAVI) using a fixed, low-volume, contrast medium injection.Methods: Between July and October 2019, 43 TAVI candidates underwent investigation with CTA using a 64-slice CT scanner. Images obtained were prospectively evaluated. 65 mL of low iodine dose contrast medium (CM), followed by 25 mL of saline, were administered using a fixed multiphasic injection protocol in all patients. Patients were divided into three groups based on BMI: Group 1 (n = 9) with BMI < 22 kg/m2; Group 2 (n = 22) with BMI 22-29 kg/m2; Group 3 (n = 12) with BMI > 29 kg/m2. Images were evaluated for image quality, vessel attenuation (HU), Signal-to-Noise Ratio (SNR), Contrast-to-Noise Ratio (CNR) and estimated radiation dose. Image quality of the aortic root and iliac-femoral vessels was diagnostic in all patients.Results: Vascular attenuation was > 200 HU and CNR > 3 at all vessel levels.Conclusion: Data from our study suggest that it is possible to image the aortic annulus and aorto-iliac anatomy and obtain high image quality in all patients by using a combined ECG-gated and helical acquisition mode in a computed tomography angiography (CTA) protocol with a fixed low-volume contrast medium injection (65 mL). This allows for accurate CT measurements of the aortic annulus, recruitment of patients for TAVI and facilitates pre-procedural planning in these high surgical risk patients. [ABSTRACT FROM AUTHOR]