A de Leone studies digestive disorders, particularly the link between small intestinal bacterial overgrowth (SIBO) and irritable bowel syndrome (IBS). They investigate how common SIBO is among IBS patients and explore effective treatments for it. By using breath tests, they can identify SIBO in patients who might otherwise just be labeled as having IBS. Their work emphasizes the importance of proper diagnosis and treatment options, particularly using antibiotics like rifaximin to reduce SIBO-related symptoms.
Key findings
In a study of 73 patients with IBS, 33 patients (about 45%) were found to have SIBO.
After treatment with rifaximin, nearly 60% of those with SIBO experienced improvement, as indicated by negative breath tests and decreased symptoms.
The findings suggest that many symptoms attributed to IBS may actually stem from SIBO, highlighting the need for accurate testing.
Frequently asked questions
Does Dr. A de Leone study irritable bowel syndrome?
Yes, Dr. A de Leone studies irritable bowel syndrome (IBS) and its link to small intestinal bacterial overgrowth (SIBO).
What treatments has Dr. A de Leone researched?
Dr. A de Leone has researched the effectiveness of non-absorbable antibiotics, particularly rifaximin, in treating SIBO in patients with IBS.
Is Dr. A de Leone's work relevant to patients with digestive problems?
Yes, Dr. A de Leone's research is highly relevant for patients with digestive issues, especially those diagnosed with IBS, as it provides insights into better treatment options by identifying underlying causes.
Publications in plain English
Endoscopic ultrasound-guided gallbladder drainage for bilirubin normalization in distal malignant biliary obstruction: A focused review.
2026
World journal of gastrointestinal endoscopy
Martino A, Granata A, Zito FP, Fiorentino R, Bennato R +9 more
Plain English This study looked at how effective endoscopic ultrasound-guided gallbladder drainage is for lowering bilirubin levels in patients with a type of bile duct blockage caused by cancer. Researchers found that this method can successfully normalize bilirubin levels, which is essential before starting chemotherapy. This is important because high bilirubin can lead to serious health issues and prevent effective cancer treatment.
Who this helps: Patients with distal malignant biliary obstruction who need chemotherapy.
The role of computed tomography for the prediction of esophageal variceal bleeding: Current status and future perspectives.
2023
World journal of gastrointestinal endoscopy
Martino A, Amitrano L, Guardascione M, Di Serafino M, Bennato R +5 more
Plain English This study looked at how computed tomography (CT) could help predict bleeding from swollen veins in the esophagus, a serious complication for patients with severe liver problems. It found that while CT isn't a replacement for current methods (which are invasive and complicated), it might help improve predictions when used alongside those methods. This matters because better predictions could lead to earlier interventions and improved outcomes for patients at risk of these dangerous bleeds.
Who this helps: Patients with liver disease and their healthcare providers.
Stocky/Packed Pancreas: A Case of Focal Drug-Induced Acute Pancreatitis Mimicking Cancer.
2022
Tomography (Ann Arbor, Mich.)
Di Serafino M, Ronza R, D'Auria D, Fiorentino R, Arundine D +9 more
Plain English This study examined a case where a 71-year-old man developed drug-induced acute pancreatitis (DIP) after receiving immunotherapy for lung cancer. Initially, scans showed signs that looked like pancreatic cancer, but later tests confirmed it was actually inflammation caused by the treatment, not a tumor. This finding is important because recognizing DIP quickly can lead to better treatment decisions and outcomes for patients.
Who this helps: This helps patients undergoing immunotherapy and their doctors.
Endoscopic ultrasound-guided radiofrequency ablation of pancreatic neuroendocrine tumors: a systematic review of the literature.
2020
Endoscopy international open
Imperatore N, de Nucci G, Mandelli ED, de Leone A, Zito FP +2 more
Plain English This study looked at a treatment called endoscopic ultrasound-guided radiofrequency ablation (EUS-RFA) for patients with pancreatic neuroendocrine tumors (P-NETs). Out of 61 patients treated, 96% showed positive results from the procedure, and only 13.7% experienced mild adverse events. The findings suggest that EUS-RFA is a safe and effective option, especially for smaller tumors under 18 mm, which had an 80% chance of responding to the treatment.
Who this helps: This helps patients with small pancreatic tumors by offering a less invasive treatment option.
Predictors of advanced colorectal neoplasia at initial and surveillance colonoscopy after positive screening immunochemical faecal occult blood test.
2016
Digestive and liver disease : official journal of the Italian Society of Gastroenterology and the Italian Association for the Study of the Liver
Botteri E, Crosta C, Bagnardi V, Tamayo D, Sonzogni AM +4 more
Plain English This study looked at what factors influence the chances of finding serious precursors to colorectal cancer in people who had a positive blood test for hidden blood in their stool. Researchers found that 53.2% of the participants had advanced neoplasia, which was more likely in older men who smoked or drank alcohol, and less likely in those who were physically active, ate fruits and vegetables, or used aspirin regularly. This information is important because it highlights how lifestyle choices can affect cancer risk and helps create personalized screening recommendations.
Who this helps: This helps patients undergoing colorectal cancer screening and doctors who guide them on prevention strategies.
Confocal laser endomicroscopy for in vivo diagnosis of Barrett's oesophagus and associated neoplasia: a pilot study conducted in a single Italian centre.
2013
Digestive and liver disease : official journal of the Italian Society of Gastroenterology and the Italian Association for the Study of the Liver
Trovato C, Sonzogni A, Ravizza D, Fiori G, Tamayo D +4 more
Plain English This study looked at a new method called confocal laser endomicroscopy to help doctors diagnose Barrett's oesophagus, a condition that can lead to cancer. Out of 50 patients examined, 48 underwent the new procedure, and it accurately predicted cancerous changes in tissue 98.1% of the time. This method could greatly improve how doctors screen for and monitor Barrett's oesophagus, allowing for faster and more precise diagnoses.
Who this helps: This benefits patients at risk for Barrett's oesophagus and their doctors.
Narrow band imaging with magnification endoscopy for celiac disease: results from a prospective, single-center study.
2013
Diagnostic and therapeutic endoscopy
De Luca L, Ricciardiello L, Rocchi MB, Fabi MT, Bianchi ML +3 more
Plain English This study looked at a new method called Narrow Band Imaging with magnification endoscopy (NBI-ME) for diagnosing celiac disease, which can have tricky-to-detect intestinal damage. Researchers tested 44 patients and found that NBI-ME was able to identify 12 cases of partial villous atrophy that standard endoscopy missed, achieving an overall accuracy of 95%. This is important because it means doctors could use this method to better diagnose celiac disease and reduce unnecessary biopsies.
Who this helps: This helps patients with suspected celiac disease by improving diagnosis accuracy.
Same-day 2-L PEG-citrate-simethicone plus bisacodyl vs split 4-L PEG: Bowel cleansing for late-morning colonoscopy.
2013
World journal of gastrointestinal endoscopy
de Leone A, Tamayo D, Fiori G, Ravizza D, Trovato C +4 more
Plain English The study looked at two methods of preparing for a late-morning colonoscopy: one involved taking a smaller amount of a cleansing solution (2-L PEG-citrate-simethicone) with additional tablets, while the other used a larger amount (4-L PEG) taken in two doses. Both methods were found to be equally effective for cleaning the bowels, with 89.7% success for the smaller solution and 92.1% for the larger one, and the visibility of the colon during examination was better with the smaller solution (85.7% vs. 72.4%). This research matters because it shows that a less burdensome preparation can still work well, allowing patients to maintain their normal activities before the procedure.
Who this helps: Patients preparing for colonoscopies.
Gastroesophageal reflux disease management according to contemporary international guidelines: a translational study.
2011
World journal of gastroenterology
Pace F, Riegler G, de Leone A, Dominici P, Grossi E +1 more
Plain English This study looked at how effective proton pump inhibitors (PPIs) are for treating gastroesophageal reflux disease (GERD) based on international guidelines. Researchers followed 577 patients with heartburn, finding that 89.9% responded positively to a short trial of high-dose omeprazole, with a better response rate in patients with esophagitis (96.4%) compared to those without (82.6%). This matters because it highlights how effective PPIs can be, particularly for certain patient groups, improving quality of life significantly.
Who this helps: Patients suffering from GERD, especially those with esophagitis.
Linear array ultrasonography to stage rectal neoplasias suitable for local treatment.
2011
Digestive and liver disease : official journal of the Italian Society of Gastroenterology and the Italian Association for the Study of the Liver
Ravizza D, Tamayo D, Fiori G, Trovato C, De Roberto G +2 more
Plain English This study examined how well a specific type of ultrasound, called endorectal ultrasonography, can accurately assess rectal neoplasias (abnormal tissue growths) that can be treated locally. Researchers analyzed data from 92 patients and found that this ultrasound method correctly identified early-stage neoplasias (those that haven't spread to lymph nodes) 86% of the time and had a very high rate of correctly identifying patients who did not have advanced disease, at 95.6%. Getting this staging right is crucial because it helps doctors decide the best treatment options for patients.
Who this helps: This helps patients with rectal neoplasias by guiding treatment decisions.
Endoscopic surveillance for hereditary non-polyposis colorectal cancer (HNPCC) family members in a Southern Italian region.
2010
Digestive and liver disease : official journal of the Italian Society of Gastroenterology and the Italian Association for the Study of the Liver
Esposito I, de Bellis M, de Leone A, Rossi GB, Selvaggi F +7 more
Plain English This study looked at how well family members of people with hereditary non-polyposis colorectal cancer (HNPCC) followed guidelines for routine colon checks. Researchers reviewed data from 106 family members, finding that 40 participated in surveillance, and during their first check-ups, they discovered 7 cases of colorectal cancer and 14 polyps. The results showed that regular colonoscopies every two years are effective for catching serious problems early and help family members stick to their health guidelines.
Who this helps: This helps family members of HNPCC patients by monitoring their health more effectively.
The proton pump inhibitor test for gastroesophageal reflux disease: optimal cut-off value and duration.
2010
Digestive and liver disease : official journal of the Italian Society of Gastroenterology and the Italian Association for the Study of the Liver
de Leone A, Tonini M, Dominici P, Grossi E, Pace F +1 more
Plain English This study looked at the effectiveness of the proton pump inhibitor (PPI) test for diagnosing gastroesophageal reflux disease (GERD). Researchers tested 544 patients, treating them with PPIs for two weeks and then for three months. They found that the test was accurate 89.7% to 97.8% of the time, especially useful for patients with obvious signs of damage in the esophagus, while being less specific overall. The best results came from a one-week test period where a significant drop in heartburn severity was noted.
Who this helps: This benefits patients with GERD by providing a clearer and more reliable test for diagnosis.
Is it possible to clinically differentiate erosive from nonerosive reflux disease patients? A study using an artificial neural networks-assisted algorithm.
2010
European journal of gastroenterology & hepatology
Pace F, Riegler G, de Leone A, Pace M, Cestari R +3 more
Plain English This study looked at how to tell apart two types of gastroesophageal reflux disease (GERD): erosive esophagitis (EE), which causes damage to the esophagus, and nonerosive reflux disease (NERD), which does not. Researchers used a new questionnaire (QUID) and an advanced computer algorithm to see if they could accurately distinguish between these two conditions. Although the questionnaire effectively identified GERD patients from healthy individuals, it did not help in differentiating between the erosive and nonerosive types.
Who this helps: This research benefits doctors and patients seeking more accurate diagnoses of GERD.
Blood ammonia levels in liver cirrhosis: a clue for the presence of portosystemic collateral veins.
2009
BMC gastroenterology
Tarantino G, Citro V, Esposito P, Giaquinto S, de Leone A +4 more
Plain English This study looked at the relationship between blood ammonia levels and the presence of abnormal veins in people with liver cirrhosis. The researchers found that patients with higher ammonia levels had more severe liver issues, with median ammonia levels of 45, 66, and 108 mcM/L for mild, moderate, and severe liver cirrhosis respectively (p < 0.001). This is important because by identifying patients with high ammonia levels, doctors can better monitor those at risk of serious complications, leading to better care.
Who this helps: Patients with liver cirrhosis and their healthcare providers.
Outcome of nonerosive gastro-esophageal reflux disease patients with pathological acid exposure.
2009
World journal of gastroenterology
Pace F, Pallotta S, Manes G, de Leone A, Zentilin P +5 more
Plain English This study looked at patients with a type of acid reflux called nonerosive gastro-esophageal reflux disease (NERD) over a five-year period. Among 260 patients, 30% developed a more serious form of the disease after their initial diagnosis, with issues like heartburn and regurgitation remaining common. The main reasons for worsening were smoking and not using proton pump inhibitors, a common medication for acid reflux, indicating the importance of proper treatment and lifestyle choices.
Who this helps: This information benefits patients with reflux issues and their doctors by highlighting the importance of managing symptoms and avoiding smoking.
Potential role for the common cystic fibrosis DeltaF508 mutation in Crohn's disease.
2007
Inflammatory bowel diseases
Bresso F, Askling J, Astegiano M, Demarchi B, Sapone N +15 more
Plain English This study looked at the common DeltaF508 mutation in cystic fibrosis to see if it plays a role in Crohn's disease, a type of inflammatory bowel disease. Researchers analyzed 2,568 people from Italy, Sweden, and Scotland and found that people with this mutation were less likely to have Crohn's disease, especially in Italian and Swedish patients. This matters because it suggests that the DeltaF508 mutation might help protect against Crohn's disease, which could influence future research and treatment options.
Who this helps: Patients with Crohn's disease and healthcare providers.
Breath test for differential diagnosis between small intestinal bacterial overgrowth and irritable bowel disease: an observation on non-absorbable antibiotics.
2007
World journal of gastroenterology
Esposito I, de Leone A, Di Gregorio G, Giaquinto S, de Magistris L +2 more
Plain English This study looked at how common small intestine bacterial overgrowth (SIBO) is among patients diagnosed with irritable bowel syndrome (IBS) and the effectiveness of certain antibiotics in treating it. Out of 73 patients, 33 (about 45%) had SIBO, and after treatment with rifaximin, nearly 60% of those patients showed improvement, as their breath tests became negative and their symptoms decreased. This finding is important because it indicates that many IBS symptoms may actually be caused by SIBO, and testing for it can lead to better treatment options.
Who this helps: This helps patients with IBS who may actually have SIBO, leading to more effective treatments for their symptoms.
Increased risk of breast cancer in first-degree relatives of Crohn's disease patients. An IG-IBD study.
2006
Digestive and liver disease : official journal of the Italian Society of Gastroenterology and the Italian Association for the Study of the Liver
Riegler G, Caserta L, Castiglione F, Esposito I, Valpiani D +10 more
Plain English Researchers studied the risk of cancer in family members of people with Crohn's disease compared to family members of those without the disease. They found that 6.5% of first-degree relatives of Crohn's patients had cancer, compared to 5.5% in the control group. Notably, the study revealed that breast cancer was twice as common in female relatives of Crohn's patients (0.91%) compared to controls (0.42%). This is important because it suggests that there could be shared genetic or environmental factors between Crohn's disease and breast cancer.
Who this helps: This helps patients and their families, particularly those with a Crohn's disease diagnosis.