Publications by authors named "Guido Salvetti"

Purpose: Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental condition characterized by inattention, hyperactivity, and impulsivity. A positive association between ADHD and obesity has been observed, especially in adult samples. In this study, prevalence and correlates of self-reported symptoms indicative of a positive screening for ADHD were examined in patients seeking bariatric treatment.

View Article and Find Full Text PDF

Purpose: Bariatric surgery (BS), an effective treatment for severe obesity and its comorbidities, may result in micronutrient and vitamin deficiencies. This monocentric prospective observational study aimed at evaluating the efficacy of a specifically designed vitamin/mineral formula (Bariatrifast, BIOITALIA S.r.

View Article and Find Full Text PDF

Context: Glomerular hyperfiltration may represent a direct pathogenetic link between obesity and kidney disease. The most widely used methods to estimate creatine clearance such as Cockroft-Gault (CG), Modification of Diet in Renal Disease (MDRD), and Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) have not been validated in subjects with obesity.

Objective: The performance of prediction formulas was compared with measured creatinine clearance (mCrCl) in subjects with obesity.

View Article and Find Full Text PDF
Article Synopsis
  • The study aims to understand how psychiatric disorders, ADHD symptoms, and emotional dysregulation affect weight loss after bariatric surgery in obese patients.
  • Conducted at the Obesity Center of Pisa University Hospital, the research involved 99 participants, with follow-up evaluations focusing on psychiatric diagnoses, ADHD symptoms, and emotional regulation.
  • Results indicate that individuals with insufficient weight loss post-surgery had higher rates of binge eating disorder and emotional dysregulation, while factors like older age and higher pre-surgery BMI were linked to poorer weight loss outcomes.
View Article and Find Full Text PDF
Article Synopsis
  • * A study examined the abundance of circulating microRNAs (cmiRs-320) in LD patients and found that certain cmiRs are significantly upregulated or downregulated, especially in severe forms of LD.
  • * The results suggest that cmiRs-320 could serve as new biomarkers for LD, with significant relationships between specific cmiRs and metabolic indicators, hinting at potential mechanisms behind WAT dysfunction.
View Article and Find Full Text PDF

Purpose: The co-occurrence of obesity, eating and mood disorders has been frequently reported in clinical and epidemiological settings. This study aimed to explore the prevalence of night-eating obese patients referred for bariatric surgery and to identify associated psychopathology and psychiatric comorbidity.

Methods: The sample was composed of 121 obese patients consecutively enrolled between November 2010 and May 2012 during psychiatric evaluations for bariatric intervention.

View Article and Find Full Text PDF

Purpose: We aimed at investigating the lifetime prevalence of mood, eating and panic disorders in a large sample of obese patients referred to bariatric surgery. We also explored the patterns of psychiatric comorbidity and their relationship with Body Mass Index (BMI).

Methods: The sample was composed of patients consecutively referred for pre-surgical evaluation to the Obesity Center of Pisa University Hospital between January 2004 and November 2016.

View Article and Find Full Text PDF

Purpose: The aim of this study was to investigate the pathogenic role of obesity on blinding eye diseases in a population of severely obese patients with no history of eye diseases, and to verify whether weight loss induced by bariatric surgery may have a protective effect.

Methods: This was a pilot, monocentric, prospective, and open label study conducted at the University Hospital of Pisa. Fifty-seven severely obese patients with a mean body mass index value of 44.

View Article and Find Full Text PDF

Purpose: Expression of IGFBP-2 in mice is regulated by leptin. Over-expression of IGFBP-2 is associated with reduced caloric intake and resistance to weight gain. Hormonal variations contributing to weight loss occur very early after bariatric surgery but have not been fully elucidated.

View Article and Find Full Text PDF

Effective and sustained blood pressure (BP) control in hypertensive patients with moderate-to-severe obesity is often difficult to achieve. We evaluated clinic, 24h, day-time and night-time systolic/diastolic BP levels and control in a large cohort of adult outpatients with different classes of obesity. A single center, prospective, cohort study was conducted at Hypertension Unit, Division of Cardiology, Sant'Andrea Hospital, Rome Italy.

View Article and Find Full Text PDF

Obstructive sleep apnea-hypopnea syndrome (OSAHS) is frequently present in patients with severe obesity, but its prevalence especially in women is not well defined. OSAHS and non-alcoholic fatty liver disease are common conditions, frequently associated in patients with central obesity and metabolic syndrome and are both the result of the accumulation of ectopic fat mass. Identifying predictors of risk of OSAHS may be useful to select the subjects requiring instrumental sleep evaluation.

View Article and Find Full Text PDF
Article Synopsis
  • Left ventricular diastolic dysfunction (DD) is common in obese individuals and may increase the risk of developing heart failure, but recent data on its prevalence after the 2016 imaging guidelines is lacking.
  • A study involving 588 participants categorized them by weight (obese, overweight, normal) and found that DD was present in 19% of obese, 12% of overweight, and only 2% of normal weight individuals.
  • Key factors associated with increased risk of DD in obese patients included higher LV mass normalized to height and reduced global longitudinal strain, indicating that these measures are important predictors of heart health in this population.
View Article and Find Full Text PDF

Cardiovascular prevention represents a cornerstone of modern strategies to reduce the burden of cardiovascular disease. It is of key importance to prevent cardiovascular diseases and associated events, not only to reduce morbidity and mortality, but also to increase the years of wellness in the aging population and to make the growing socio-economic burden imposed by cardiovascular events more sustainable.The current approach to prevention is based on an integrated use of effective lifestyle measures and, whenever appropriate, of antihypertensive and antidiabetic drugs, lipid-lowering agents and antiplatelet drugs.

View Article and Find Full Text PDF

Background: Obesity and hypothyroidism are both common disorders within the general population. Obese hypothyroid subjects require higher doses of levothyroxine (LT4) compared with normal weight individuals. Previous studies on the effects of bariatric surgery on LT4 dose requirements in hypothyroid subjects have provided conflicting results.

View Article and Find Full Text PDF

The use of angiotensin-converting enzyme inhibitors (ACE-I) and angiotensin II receptor blockers (ARB) for the treatment of hypertensive obese patients is steadily increasing. Some studies have reported that the use of these drugs was associated with an increased risk of hypotensive episodes, during general anaesthesia. The number of bariatric procedures is also increasing worldwide, but there is a lack of studies investigating the hypotensive effect of renin-angiotensin system (RAS) blockers in severely obese patients during general anaesthesia for bariatric surgery.

View Article and Find Full Text PDF

Background: Obesity is frequently associated with left ventricular hypertrophy (LVH), a condition leading to an increased cardiovascular risk.

Aim: The objective of this study was to evaluate the prevalence of LVH in a cohort of obese women, with a main focus on the anthropometric and clinical parameters that are associated with an increased left ventricular mass (LVM).

Methods: The study was performed in 166 obese female patients.

View Article and Find Full Text PDF

A 54-year-old Italian female patient was admitted to our Department with the diagnosis of type 2 diabetes poorly controlled with insulin therapy. The patient was born by consanguineous parents (first degree cousins); she had acromegaloid features, diffuse lipoatrophy and muscular pseudo-hypertrophy since childhood. To confirm the clinical hypothesis of congenital generalized lipodystrophy (CGL) or Berardinelli-Seip syndrome, the sequences of AGPAT2 (encoding for 1-acyl-sn-glycerol-3-phosphate acyltransferase beta) and BSCL2 (encoding for seipin) candidate genes were analyzed.

View Article and Find Full Text PDF

Objectives: The aim of this study was to assess whether small arteries from visceral fat of obese patients show a reduced nitric oxide (NO)-dependent relaxation, as compared with lean control subjects, focusing on the role of the pro-inflammatory cytokine tumor necrosis factor (TNF)-α.

Background: Visceral obesity is characterized by endothelial dysfunction.

Methods: Small arteries from 14 obese (body mass index 48.

View Article and Find Full Text PDF

Background: Anesthesia is able to modulate the balance between proinflammatory and anti-inflammatory cytokine production during surgery. The aim of this study is to assess the effect of three anesthesia approaches, total intravenous anesthesia (TIVA), inhalation anesthesia, and xenon anesthesia, on sieric levels of nitric oxide (NO), IL6, IL10, and TNFα in obese patients undergoing Roux-en-Y laparoscopic gastric bypass.

Methods: Thirty adult morbidly obese patients (BMI > 35) scheduled for Roux-en-Y laparoscopic gastric bypass were randomly recruited and allocated to TIVA (N = 10), inhalation anesthesia (SEV, N = 10), and xenon anesthesia (XE, N = 10).

View Article and Find Full Text PDF

Background: Bariatric surgery allows stable body weight reduction in morbidly obese patients. In presurgical evaluation, obesity-related co-morbidities must be considered, and a multidisciplinary approach is recommended. Precise guidelines concerning the endocrinological evaluation to be performed before surgery are not available.

View Article and Find Full Text PDF

The current alarming spread of obesity in many parts of the world is caused by a sudden environmental shift characterized by replacement of a frugal diet with low cost, energy dense food, and little requests for physical activity during work and leisure time. Yet, not all people exposed to an obesogenic environment become obese, and individual differences in the propensity to gain weight as well as the occurrence of different obese phenotypes within the same environment indicate that the genetic heritage in this regard is significant and heterogeneous. The central melanocortin circuit has received much attention during the past decade, since mutations of genes expressing some key molecules in neurons of this system were discovered, which may cause monogenic forms of obesity in animals and humans.

View Article and Find Full Text PDF

Omega-3 fatty acids are essential polyunsaturated fatty acids that are crucial components of plasma membrane phospholipids. They influence cell structure and function and have anti-thrombotic and anti-arrhythmic properties, thus potentially exerting a favourable action on primary and secondary prevention of cardiovascular events. However, the supposed beneficial effect of omega-3 fatty acids in the management of cardiovascular risk has been evaluated only in a relatively small number of interventional studies, with results that are not consistent and are only suggestive of a putative beneficial effect of omega-3 supplementation on the prevention of cardiovascular mortality.

View Article and Find Full Text PDF

Data from controlled clinical studies comparing active drugs versus placebo or comparing different classes of drugs and their meta-analysis seem to indicate that although more subtle differences in the effects of various antihypertensive drugs cannot be ruled out, the protective effects against cardiovascular morbidity and mortality of all classes of drugs, including conventional therapy based on diuretics and beta-blockers and their combination, are largely explained by the extent of blood pressure (BP) reduction. Therefore BP control is still the main target of antihypertensive therapy. The benefits of diuretics have been well documented, particularly when these drugs are used at appropriate and/or optimal doses to achieve the optimal antihypertensive effect with the least occurrence of side effects, including negative metabolic effects.

View Article and Find Full Text PDF

The endothelium plays a crucial role in modulating vascular function and structure. In healthy conditions, nitric oxide produced by endothelial cells exerts not only vasodilating properties, but also several other protective actions toward the vessel wall against the development of atherosclerosis and thrombosis. Traditional cardiovascular risk factors are characterized by endothelial dysfunction caused by an enhanced production of oxidative stress leading to destroy nitric oxide, thus reducing its availability.

View Article and Find Full Text PDF