Paolo Gentileschi

• Professor
• Professor at University of Rome Tor Vergata

Background This study analyzes the long-term outcomes of metabolic bariatric surgery (MBS), focusing on weight loss, nutritional deficiencies, and patient satisfaction. We evaluate different surgical techniques to identify their impact on these outcomes. Methods A five-year retrospective analysis was conducted on 249 patients who underwent MBS at...

Available knowledge shows that obesity is associated with an impaired endothelial function and an increase in cardiovascular risk, but the mechanisms of this association are not yet fully understood. Adipose tissue dysfunction, adipocytokines production, along with systemic inflammation and associated comorbidities (e.g., diabetes and hypertension)...

Thisstudy aims to analyze the long-term outcomes of metabolic bariatric surgery (MBS), focusing on weight loss, nutritional deficiencies, and patient satisfaction, by evaluating different surgical techniques. We conducted a five-year retrospective analysis of 249 patients who underwent MBS at a specialized center. The overall sample had an average...

Introduction: In obese patients, metabolic dysfunction-associated steatotic liver disease is becoming a leading aetiology of end-stage liver disease and hepatocellular carcinoma. Simultaneous liver transplantation and sleeve gastrectomy (LT-SG) has been proposed in the US, but the safety and efficacy of the procedure have not been widely explored i...

Obesity is a chronic disease associated with increased morbidity and mortality and reduced quality of life. Pharmacotherapy can be associated with life style changes in increasing and maintaining weight loss and ameliorating obesity-related complications and comorbidities. In patients affected by obesity and uncontrolled obesity-associated complica...

There is little international data on morbidity and mortality of surgery for perforated peptic ulcer (PPU). This study aimed to understand the global 30-day morbidity and mortality of patients undergoing surgery for PPU and to identify variables associated with these. We performed an international study of adults (≥ 18 years) who underwent surgery...

Background No robust data are available on the safety of primary bariatric and metabolic surgery (BMS) alone compared to primary BMS combined with other procedures. Objectives The objective of this study is to collect a 30-day mortality and morbidity of primary BMS combined with cholecystectomy, ventral hernia repair, or hiatal hernia repair. Set...

Background There is little international data on morbidity and mortality of surgery for perforated peptic ulcer (PPU). This study aimed to understand the global 30-day morbidity and mortality of patients undergoing surgery for PPU and to identify variables associated with these. Method We performed an international study of adults (≥ 18 years) who...

Introduction Revisional bariatric surgery (RBS) represents a further solution for patients who experience inadequate weight loss (IWL) following primary bariatric surgery (BS) or significant weight regain (WR) following initial satisfactory response. RBS guidelines are lacking, however, an increased trend in further BS offering has been reported la...

Abstract Background Perforated peptic ulcer (PPU) is a surgical emergency with a mortality rate of 16-30% and a morbidity rate of 20-50%. All studies reporting on the outcome of surgery for PPU are either local or national. Most of these are based on small cohort sizes. A few larger studies have been reported, but still limited to a single nation,...

This study aims to compare different types of metabolic bariatric surgery (MBS) with lifestyle intervention/medical therapy (LSI/MT) for the treatment of overweight/obesity. The present and network meta-analysis (NMA) includes randomized trials. MBS was associated with a reduction of BMI, body weight, and percent weight loss, when compared to LSI/M...

Introduction Laparoscopic BariClip gastroplasty (LBCG) is a new reversible gastric sleeve-like procedure without gastrectomy proposed to minimize the risk of severe complications. Still one of the possible complications described with LBCG is slippage. The purpose of the current manuscript is to analyze different cases of slippage and propose a cla...

Background: Revisional bariatric surgery (RBS) represents a further solution for patients who experience inadequate weight loss (IWL) following primary bariatric surgery (BS) or significant weight regain (WR) following initial satisfactory response. RBS guidelines are lacking; however, an increased trend in further BS offerings has been reported r...

Introduction: Laparoscopic BariClip gastroplasty (LBCG) will address a similar tubular restriction than the one achieved with the laparoscopic sleeve gastrectomy (LSG) at the level of the gastric fundus, while maintaining the advantage of simplicity and anatomic preservation. The purpose of the current study was to analyze the risk of slippage and...

Background Bariatric surgery (BS) is a relatively novel surgical field and is in continuous expansion and evolution. Purpose Aim of this study was to report changes in Italian surgical practice in the last decade. Methods The Società Italiana di Chirurgia dell’Obesità (SICOB) conducted annual surveys to cense activity of SICOB centers between 201...

PurposeSleeve gastrectomy, the most commonly performed bariatric surgery procedure, carries limitations both short term including postoperative complications such as hemorrhage and gastric fistula and long term such as weight regain and gastroesophageal reflux. A new procedure has been proposed to overcome many of these limitations: laparoscopic ve...

Bariatric surgery (BS) is an effective intervention for severe obesity and associated comorbidities. Although several studies have addressed the clinical and metabolic effects of BS, an integrative analysis of the complex body response to surgery is still lacking. We conducted a longitudinal data study with 36 patients with severe obesity who were...

Background In case of insufficient weight loss or weight regain or relapse of weight-related comorbidities after Roux-en-Y gastric bypass (RYGB), other procedures such as reduction of a large gastric pouch and stoma, lengthening of the Roux limb, conversion to sleeve gastrectomy and/or bilio-pancreatic diversion with duodenal switch have been advoc...

Background In the last 2 years, anorectal surgery has been strongly affected and even surgery for urgent cases cannot be scheduled; also, patients with III- and IV-degree bleeding hemorrhoids should be treated conservatively. The aim was to evaluate the effectiveness of sclerotherapy in patients who had to postpone surgery.Methods We included all p...

Bariatric surgery (BS) is the most effective treatment in reducing weight and the burden of comorbidities in patients with severe obesity. Despite the overall low mortality rate, intra- and post-operative complications remains quite common. Weight loss before BS reduces surgical risk, but studies are inconclusive regarding which is the best approac...

Aim As inadequate perfusion has emerged as a key determinant of adipose tissue dysfunction in obesity, interest has grown regarding possible pharmacological interventions to prevent this process. Mirabegron has proved to improve insulin sensitivity and glucose homeostasis in obese humans via stimulation of β3-adrenoceptors which also seem to mediat...

Purpose During the coronavirus disease 19 (COVID-19) outbreak, most public hospitals worldwide have been forced to postpone a major part of bariatric surgery (BS) operations with unfavorable consequences for weight and obesity complications. The aim of this study was to evaluate the effectiveness and safety of laparoscopic BS on subjects with metab...

Introduction: Roux-en-Y gastric bypass (RYGB) and one anastomosis gastric bypass (OAGB) are two effective bariatric surgical procedures with positive outcomes in terms of weight loss, comorbidities remission, and adverse events profiles. OAGB seems to carry a higher risk of malnutrition, but existing data are controversial. The aim of this study i...

Introduction: One Anastomosis Gastric Bypass has been increasingly performed in the setting of bariatric surgery. The addition of gastric pouch banding (BOAGB) may reduce weight regain in the long term. BOAGB may rarely be complicated by MiniMizer ring-related affections. This article reports for the first time a case of bowel obstruction due to i...

The correlations between morbid obesity, bariatric surgery and gastrointestinal disorders are well known and reported. Symptoms like abdominal pain, constipation, bloating, heartburn and gastroesophageal reflux disease are known to be significantly more prevalent in overweight patients and body mass index is associated positively with abdominal pai...

Background Efficacy and safety of OAGB/MGB (one anastomosis/mini gastric bypass) have been well documented both as primary and as revisional procedures. However, even after OAGB/MGB, revisional surgery is unavoidable in patients with surgical complications or insufficient weight loss. Methods A questionnaire asking for the total number and demogra...

Objective Metabolic syndrome, obesity and steatosis are characterized by a range of dysregulations including defects in ubiquitin ligase tagging proteins for degradation. The identification of novel hepatic genes associated with fatty liver disease and metabolic dysregulation may be relevant to unravel new mechanisms involved in liver disease progr...

Introduction: Laparoscopic one anastomosis gastric bypass (LOAGB) is a relatively new procedure for the treatment of morbid obesity and related comorbidities. On average, this procedure results in good postoperative weight loss with a low complication rate. Recent publications suggest that dumping syndrome and weight regain might be reduced by pla...

Background Morbid obesity is a worldwide epidemic closely linked to Non-Alcoholic Fatty Liver Disease (NAFLD), an ever more relevant indication for Liver Transplantation (LT). Obesity affects an increasing number of LT recipients, but the ideal management of these patients remain unclear. Bariatric surgery (BS) in LT setting is challenging but feas...

The published colorectal cancer (CRC) outcomes after bariatric surgery (BS) are conflicting, with some anecdotal studies reporting increased risks. The present nationwide survey CRIC-ABS 2020 (Colo-Rectal Cancer Incidence-After Bariatric Surgery-2020), endorsed by the Italian Society of Obesity Surgery (SICOB), aims to report its incidence in Italy...

Purpose Pre-surgical psychosocial evaluation of bariatric surgery (BS) patients should identify psychiatric issues that could worsen after surgery and those requiring additional ongoing intervention. In this view, the use of reliable, appropriate and concise evaluating instruments is of critical importance. The aim of the present study was to inves...

Background Bariatric surgery is an effective treatment for the obesity epidemic, but the poor attendance and adherence rates of post-surgery recommendations threaten treatment effectiveness and health outcomes. Preoperatively, we investigated the unique contributions of clinical (e.g., medical and psychiatric comorbidities), sociodemographic (e.g.,...

Purpose Only anecdotally reported, intrathoracic migration (ITM) represents an unacknowledged complication after sleeve gastrectomy (LSG) contributing to gastroesophageal reflux disease (GERD) development, both recurrent and de novo. The primary endpoint of this study was to evaluate the incidence of postoperative ITM ≥ 2 cm; the secondary endpoint...

IntroductionKlinefelter syndrome (KS) can appear as a wide spectrum of clinical manifestations, with no guidelines for appropriate treatment. We present the first study of bariatric surgery (BS) with a 48-month follow-up, for the management of two patients affected by obesity and KS.Cases presentationThe first patient was a 32-year-old man with dia...

Background Sars-Cov-2 epidemic in Italy caused one of the greatest 2020 European outbreaks, with suspension of elective bariatric/metabolic surgery (BMS). From May 2020 a significant decline of the epidemic has been observed (phase 2); National Health Service protocols permitted elective BMS’ resumption. A new, more severe COVID-19 surge, the “seco...

Bariatric operations have been documented in clinical trials to promote remission or dramatic improvement of Type II Diabetes Mellitus and related comorbidities. Herein we review randomized trials and meta-analyses published during the last 20 years on the results of bariatric/metabolic surgery in obese patients with type 2 diabetes with the aim of...

Background The gut microbiome and iron status are known to play a role in the pathophysiology of non-alcoholic fatty liver disease (NAFLD), although their complex interaction remains unclear. Results Here, we applied an integrative systems medicine approach (faecal metagenomics, plasma and urine metabolomics, hepatic transcriptomics) in 2 well-cha...

Twenty to thirty percent of patients experience weight regain at mid and long-term follow-up. Impaired cognitive functions are prevalent in people suffering from obesity and in those with binge eating disorder, thereby, affecting the weight-loss outcomes. The aim of our study was to investigate neurocognitive and psychopathological predictors of su...

Introduction: Laparoscopic sleeve gastrectomy (LSG) is now the most common bariatric procedure to treat morbidly obese patients. The main concern of LSG lies in the long-term weight regain, which is reported to happen in up to 75.6% of patients after 6 years. In this study, we report our overall experience with Laparoscopic Banded Sleeve Gastrectom...

Background: With the escalation of surgical treatment of morbid obesity, there is a growing interest in the training of bariatric surgeons. Laparoscopic sleeve gastrectomy (LSG) gained popularity both as a first-stage approach and as a stand-alone procedure. Objectives: The aim of this study was to assess detectable differences in LSG with intra...

Background: From the beginning of March 2020, lockdown regimens prevented patients with obesity from receiving bariatric surgery. Surgical emergencies and oncological procedures were the only operations allowed in public hospitals. Consequently, patients with morbid obesity were put in a standby situation. With the aim at exploring the viewpoint of...

Interest in adipose tissue pathophysiology and biochemistry have expanded considerably in the past two decades due to the ever increasing and alarming rates of global obesity and its critical outcome defined as metabolic syndrome (MS). This obesity-linked systemic dysfunction generates high risk factors of developing perilous diseases like type 2 d...

The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and its related disease, coronavirus disease 2019 (COVID-19), has been rapidly spreading all over the world and is responsible for the current pandemic. The current pandemic has found the Italian national health system unprepared to provide an appropriate and prompt response, heavily...

Background: Weight regain after laparoscopic sleeve gastrectomy (LSG) is nowadays a growing concern. Sleeve dilatation and loss of food restriction is considered the main mechanism. The placement of a silicon ring around the gastric tube seems to give benefits in the short term. We report the results of a randomized study comparing LSG and laparos...

In Italy elective bariatric and metabolic surgery was cancelled on February 21,2020 at the beginning of the so-called phase 1 of the SARS-CoV-2 outbreak. Gradually it was restarted on May 4,2020 at the beginning of the so-called phase 2, when epidemiological data showed containment of the infection. Before the outbreak in eight high-volume bariatri...

A general personality and psychopathology evaluation is considered to be crucial part of the multidisciplinary assessment for weight-related problems. The Symptom Checklist-90-Revised (SCL-90-R) is commonly used to assess general psychopathology in both overweight and obese patients seeking weight-loss treatment. The main purpose of the present res...

Among the bariatric surgery community, it has recently emerged the idea of a possible association between resected gastric volume (RGV) and weight loss after laparoscopic sleeve gastrectomy (LSG). If the size of the sleeve depends on the bougie caliber, the resected volume of the stomach remains something which is not possible to standardize. The a...

Background/Objectives: Few studies have investigated the long-term variation of nutritional parameters after bariatric surgery. We examined changes in weight, vitamin status, and patient-reported dietary supplement use up to 5 years after surgery. Subjects/Methods: Circulating vitamin levels and data on self-reported dietary supplement use were col...

Aim: The main aim of the present study was to investigate the prevalence of Food Addiction (FA) and clinical level of Binge Eating in an Italian sample of overweight/obese patients attending low energy-diet therapy, and in an Italian sample of obese bariatric surgery candidates. Methods: Participants were: i) 122 overweight/obese patients (86 wo...

Introduction: For bariatric surgery candidates body image dissatisfaction (BID) may influence both psychological well-being and motivation to obtain surgery. This study aims to examine possible psychiatric predictors of BID. In particular, we explored the burden of new associated factors such as early trauma and attachment style (AS), which have n...

Correction to: Nature Medicine https://doi.org/10.1038/s41591-018-0061-3, published online 25 June 2018. In the version of this article originally published, the received date was missing. It should have been listed as 2 January 2018. The error has been corrected in the HTML and PDF versions of this article.

Hepatic steatosis is a multifactorial condition that is often observed in obese patients and is a prelude to non-alcoholic fatty liver disease. Here, we combine shotgun sequencing of fecal metagenomes with molecular phenomics (hepatic transcriptome and plasma and urine metabolomes) in two well-characterized cohorts of morbidly obese women recruited...

Obesity represents one of the most complex public health challenges and has recently reached epidemic proportions. Obesity is also considered to be primarily responsible for the rising prevalence of metabolic syndrome, defined as the coexistence in the same individual of several risk factors for atherosclerosis, including dyslipidaemia, hypertensio...

Purpose: Increased parathyroid hormone (PTH) is commonly associated with obesity, and its role in the pathogenesis of obesity-related glucometabolic abnormalities is uncertain. We aimed to explore the relationships of PTH with glucose/insulin homeostasis parameters before and after bariatric surgery-induced weight loss, and whether they depend or...

Laparoscopic Roux-en-Y gastric bypass (LRYGB) and laparoscopic sleeve gastrectomy (LSG) are the most widely used bariatric procedures nowadays. The aim of this study was to compare long-term results on weight loss and comorbidities improvement for both procedures. A cohort of 304 consecutive patients underwent surgery in 2006–2009: 162 underwent LS...

We investigated miR21 expression in omental (OAT) and subcutaneous adipose tissue (SAT) from 16 obese subjects undergoing bariatric surgery. Patients were divided into two age- and BMI-matched groups according to the presence of type 2 diabetes (T2D). miR21 was not differently expressed in OAT and SAT. However, miR21 expression was two folds greate...

Introduction . Aim of the study was trying to draw a final flow chart for the management of gastric leaks after laparoscopic sleeve gastrectomy, based on the review of our cases over 10 years’ experience. Material and Methods . We retrospectively reviewed all patients who underwent LSG as a primary operation at the Bariatric Unit of Tor Vergata Uni...

Background: There has been a relative lack of research on the effect of applying enhanced recovery principles in the context of morbid obesity surgery and monitoring outcome. Objectives: To determine the feasibility of applying enhanced recovery after surgery (ERAS) principles application on a bariatric population and review the effect on outcome...

Introduction: Obesity is a contributor to the global burden of chronic diseases, including non-alcoholic fatty liver disease and non-alcoholic steatohepatitis (NASH). NASH cirrhosis is becoming a leading indication for liver transplant (LT). Obese transplanted patients have higher morbidity and mortality rates. One strategy, to improve the outcome...

. The placement of ring or band around the gastric tube might prevent the dilation after Laparoscopic Sleeve Gastrectomy (LSG). We describe the first randomized study comparing LSG and Laparoscopic Banded Sleeve Gastrectomy (LBSG). Material and Method . Fifty obese patients were enrolled in the study between January 2014 and January 2015. We analys...

Purpose: The objective of this retrospective study was to observe whether more frequent long-term medical follow-up visits than what occurs with the current typical follow-up schedule might prevent weight regain and nutritional deficiencies, and improve the resolution of comorbidities in bariatric patients. Materials and methods: Clinical reports...

Background/objectives: The unresolved chronic inflammation of white adipose tissue (WAT) in obesity leads to interstitial deposition of fibrogenic proteins as reparative process. The contribution of omental adipose tissue (oWAT) fibrosis to obesity-related complications remains controversial. The aim of our study was to investigate whether oWAT fi...

Gender might be important in predicting outcomes after bariatric surgery. The aim of the study was to investigate the influence of gender on long-term weight loss and comorbidity improvement after laparoscopic sleeve gastrectomy (LSG) and laparoscopic Roux-en-Y gastric bypass (LRYGB). A cohort of 304 consecutive patients underwent surgery in 2006-2...

Celiac disease (CD) is a gluten sensitive enteropathy characterized by a marked infiltration of the mucosa with immune cells, over-production of inflammatory cytokines and epithelial cell damage. The factors/mechanisms that sustain and amplify the ongoing mucosal inflammation in CD are not however fully understood. Here, we have examined whether in...

Introduction: Medical and surgical teams have not a routine, reliable measure to identify the risk assessment of the obese patient. BMI which is widely used to categorized and graded patient with obesity, only measures how big you are, not how sick you are. The purpose of our study is to validate a new scoring system that adds a pathophysiological...

Background: Laparoscopic sleeve gastrectomy (LSG) is an approved primary procedure for morbid obesity, but it is associated with serious complications, such as staple line leaks and bleeding. The objective of this study was to assess the effectiveness of staple line reinforcement (SLR) in reducing leaks and bleeding after LSG. Methods: A total o...

Introduction. Moderate obesity (BMI 30-35 kg/m(2)) affects 25% of the western population. The role of bariatric surgery in this context is currently debated, reserved for patients with comorbidity, as an alternative to conservative medical treatment. We describe our experience in moderately obese patients treated with bariatric surgery. Materials a...

Context: High levels of PTH are reported in obese individuals and related to increased cardiometabolic risk. Objective: Our objective was to evaluate whether the relationship between PTH, insulin resistance, and related metabolic parameters differ between metabolically healthy obese (MHO) and insulin-resistant obese (IRO) subjects. Design and s...

In patients with the metabolic syndrome (MetS), the facilitatory effect of insulin on forearm vasodilator responsiveness to different stimuli is impaired. Whether the RhoA/Rho kinase (ROCK) pathway is involved in this abnormality is unknown. We tested the hypotheses that, in MetS patients, ROCK inhibition with fasudil restores insulin-stimulated va...

Celiac disease (CD)-associated inflammation is characterized by high interleukin- 21 (IL-21), but the mechanisms that control IL-21 production are not fully understood. Here we analyzed IL-21 cell sources and examined how IL-21 production is regulated in CD. Intraepithelial lymphocytes (IELs) and lamina propria lymphocytes (LPLs), isolated from CD...

Introduction. Laparoscopic sleeve gastrectomy (LSG) represents a valid option for morbid obesity, either as a primary or as a staged procedure. The aim of this paper is to report the experience of a single surgeon with LSG as a standalone operation for morbid obesity. Methods. From April 2006 to April 2011, 200 patients underwent LSG for morbid obe...

The main drawback of laparoscopic sleeve gastrectomy (LSG) is the severity of postoperative complications. Staple line reinforcement (SLR) is strongly advocated. The purpose of this study was to compare prospectively and randomly three different techniques of SLR during LSG. From April 2010 to April 2011, patients submitted to LSG were randomly sel...

Laparoscopic sleeve gastrectomy (LSG) represents a valid option for morbidly obese patients, either as a primary or as a staged procedure. Staple-line reinforcement (SLR) is strongly advocated to decrease the chance of bleeding. The aim of this article is to report our experience with a new technique of SLR using a thrombin-gelatin matrix in a seri...

The tissue inhibitor of metalloproteinase (TIMP)3, a stromal protein that restrains the activity of proteases and receptors, is reduced in inflammatory metabolic disorders such as type 2 diabetes mellitus (T2DM) and atherosclerosis. We overexpressed Timp3 in mouse macrophages (MacT3) to analyze its potential antidiabetic and antiatherosclerotic eff...