Gilberto De Nucci

Faculty of Medical Sciences, Department of Pharmacology, University of Campinas (UNICAMP), Campinas, Brazil.; Department of Pharmacology, University of São Paulo (USP), Institute of Biomedical Sciences (ICB), São Paulo, Brazil.

50 publications 2023 – 2026 ORCID

What does Gilberto De Nucci research?

Gilberto De Nucci studies the impact of biochemical compounds, such as 6-nitrodopamine and 6-cyanodopamine, on smooth muscle contractions in different tissues, including human blood vessels and ureters. His research also explores advanced medical techniques like endoscopic ultrasound-guided biopsies and drainage methods, improving diagnostic accuracy and patient outcomes for conditions such as pancreatic cysts, gallbladder obstructions, and hyperplastic lesions in the esophagus and stomach. He is dedicated to enhancing treatment options for patients with various health issues, including cardiovascular, pancreatic, and reproductive health concerns.

Key findings

  • 6-nitrodopamine increased calcium levels in human aortic smooth muscle, significantly enhancing contractility, indicating its key role in blood vessel function.
  • In a study comparing biopsy needles, the Franseen needle achieved a diagnostic accuracy of 96.5%, outperforming the forward bevel needle which had an accuracy of 88.9%.
  • In a large study of patients with intraductal papillary mucinous neoplasms, only 8.8% underwent immediate surgery, while malignancy rates for specific types were found to be 2.7% and 12.5%.
  • Using inhaled heparin in hospitalized COVID-19 patients reduced the need for intubation or death by approximately 57% and more than 74% respectively.
  • PuraStat, a self-assembling peptide hemostatic gel, successfully stopped bleeding in 96.5% of cases during endoscopic procedures for pancreatic fluid collections.

Frequently asked questions

Does Dr. De Nucci study heart health?
Yes, he researches how certain compounds affect the contraction of heart and vascular smooth muscles, which are crucial for cardiovascular health.
What treatments has Dr. De Nucci researched?
He has studied various treatments including advanced biopsy techniques, the use of inhaled heparin for COVID-19, and new compounds for conditions like benign prostatic hyperplasia.
Is Dr. De Nucci's work relevant to pancreatic health?
Absolutely, he has researched management strategies for pancreatic conditions, including cysts and tumors, providing insights into treatment and monitoring.
How does Dr. De Nucci's research help patients with digestive system issues?
His studies on endoscopic techniques and tissue sampling improve the diagnostic process for digestive conditions, which can lead to better, more effective treatments.
What are his contributions to reproductive health?
Dr. De Nucci's work on compounds like 6-cyanodopamine has implications for understanding and potentially treating conditions related to male reproductive health.

Publications in plain English

Endoscopic ultrasound-guided gallbladder versus bile duct drainage for first-line therapy of malignant biliary obstruction: international multicenter trial.

2026

Endoscopy

Mangiavillano B, Ramai D, Fugazza A, Franchellucci G, Spadaccini M +21 more

Plain English
This study looked at two treatment methods—gallbladder drainage and bile duct drainage—for patients with an obstruction in their bile duct caused by cancer. Researchers found that both methods worked similarly well, with clinical success rates of 86% for gallbladder drainage and 92% for bile duct drainage. Importantly, both procedures had a similar rate of complications, so either approach is a safe choice. Who this helps: Patients with malignant biliary obstruction.

PubMed

Basal release of 6-cyanodopamine in human vas deferens, a new endogenous catecholamine that enhances smooth muscle contractility.

2026

European journal of pharmacology

Britto-Júnior J, Luvizotto R, Jabbour S, Lima AT, Miller AH +5 more

Plain English
Researchers studied a new chemical called 6-cyanodopamine (6-CYD) found in the human vas deferens, which is part of the male reproductive system. They discovered that 6-CYD is released naturally from this tissue and significantly boosts muscle contractions triggered by other chemicals like dopamine and noradrenaline, particularly at low doses. This is important because understanding how 6-CYD affects muscle contractions could lead to better treatments for conditions related to male reproductive health. Who this helps: This benefits patients with reproductive health issues.

PubMed

A role for epithelium-derived 6-nitrodopamine on human ureter contractility.

2026

British journal of pharmacology

Neto WA, Oliveira DL, Britto-Júnior J, Miller AH, Lorenzon F +8 more

Plain English
This study looked at how a substance called 6-nitrodopamine (6-ND) affects the contractions of the ureters, which are tubes that carry urine from the kidneys to the bladder. Researchers found that 6-ND is released from the ureter and helps the ureter muscles contract. Specifically, they noted that the presence of 6-ND improved contractions at concentrations of 10 and 100 nanomolar when combined with other substances like noradrenaline. Understanding how 6-ND works could help improve treatments for conditions affecting urine flow. Who this helps: This helps patients with ureter-related health issues.

PubMed

The effects of 6-nitrodopamine on the systemic vasculature of South American rattlesnakes.

2026

The Journal of experimental biology

de Oliveira MG, Castro SA, Campos R, Vivi G, Leite CAC +3 more

Plain English
This study looked at a compound called 6-nitrodopamine (6-ND) in South American rattlesnakes to understand how it affects their blood vessels. Researchers found that 6-ND was present in many tissues and that it caused the blood vessels to contract when combined with other stress hormones. While 6-ND had a small individual effect on blood flow, it seemed to work better alongside other compounds to help regulate the cardiovascular system. Who this helps: This research benefits scientists and medical professionals studying snake physiology and animal cardiovascular systems.

PubMed

Brief report: A pharmacokinetic study of single-dose periungual methotrexate injections that induced multimonth remission of nail psoriasis in 5 patients.

2026

Journal of the American Academy of Dermatology

Mello CDBF, Ribeiro LF, Babadopulos T, De Nucci G, Magalhães RF

PubMed

Synthesis and Pharmacological Evaluation of 6,7-Dihydro‑3‑Oxazolo[3,4‑]Pyrazine-5,8-Dione Compounds as Inhibitors of Phosphodiesterases 4 and 5.

2026

ACS medicinal chemistry letters

Helfstein DR, das Virgens MF, Rojas Moscoso JA, Zaminelli T, Toledo FT +11 more

Plain English
Researchers focused on a condition called benign prostatic hyperplasia (BPH), which affects many older men and can lower their quality of life. They created and tested five new compounds to see if they could help treat BPH. One compound, labeled as compound VIII, showed strong results by relaxing prostate tissue, reducing unwanted muscle contractions, and decreasing the growth of prostate cells, making it a potential new treatment option. Who this helps: This helps patients with BPH who are seeking effective treatment options.

PubMed

Effects of endothelium-derived catecholamines on heart rate, blood pressure and gill ventilation in the rainbow trout.

2026

Comparative biochemistry and physiology. Part A, Molecular & integrative physiology

Campitelli RR, Guagnoni IN, Petterson LW, De Nucci G, Wang T

Plain English
This study looked at how a new group of chemicals, called catecholamines, impact heart rate and blood pressure in rainbow trout. Researchers found that very small amounts of these chemicals raised blood pressure and slowed the heart rate, even at doses much lower than traditional stress hormones like adrenaline. This finding is important because it reveals new ways that fish can control their cardiovascular systems independently from the nervous system, which could help us understand fish health and responses to stress better. Who this helps: This research benefits researchers and veterinarians working with fish health.

PubMed

Comparison of Franseen Versus Forward Bevel Needle for EUS-Guided Fine-Needle Biopsy of Subepithelial Lesions: A Propensity Score Matching Analysis.

2026

Digestive diseases and sciences

Gadour E, De Nucci G, Crinò SF, Mangiavillano B, Brigida M +9 more

Plain English
This study compared two types of needles—Franseen and forward bevel—used in a procedure called endoscopic ultrasound-guided fine-needle biopsy to collect tissue samples from certain growths in the digestive system. Researchers found that the Franseen needle provided better results: it had a diagnostic accuracy of 96.5% compared to 88.9% for the forward bevel needle, and it also resulted in better quality samples without any complications in either group. This is important because better sampling can lead to more accurate diagnoses and better treatment for patients with these growths. Who this helps: This helps patients with subepithelial lesions and their doctors.

PubMed

6-Nitrodopamine Potentiates Catecholamine-Induced CaRelease in Human Aortic Smooth Muscle and Modulates Vascular Smooth Muscle Contractility.

2026

Basic & clinical pharmacology & toxicology

Britto-Júnior J, Lima AT, Qiao S, Tang HF, Cardenas V +3 more

Plain English
This study looked at how a compound called 6-nitrodopamine (6-ND) affects calcium levels in human aortic smooth muscle cells, which are important for regulating blood vessel contraction. The researchers found that 6-ND significantly boosted the calcium increase caused by catecholamines, with 6-ND showing the strongest effect among the tested substances. This is important because it suggests that 6-ND plays a key role in how blood vessels contract, which could affect blood pressure and overall cardiovascular health. Who this helps: This research helps patients with cardiovascular issues and doctors treating them.

PubMed

Efficacy and safety of a self-assembling peptide hemostatic gel in the treatment of bleeding in endoscopic ultrasound-guided drainage and direct endoscopic necrosectomy of pancreatic fluid collections.

2026

Gastrointestinal endoscopy

de Nucci G, Colace V, Fierro G, Muscia R, Reati R +4 more

Plain English
This study looked at a new gel called PuraStat, which is designed to stop bleeding during procedures treating fluid collections in the pancreas. Out of 27 patients who received the gel, it was applied successfully to all of them, and it effectively stopped bleeding in 96.5% of cases. This is important because managing bleeding in these procedures can be challenging, and PuraStat offers a safe and effective solution. Who this helps: This benefits patients undergoing endoscopic treatments for pancreatic fluid collections.

PubMed

Clinical Features, Management and Prognosis of Hepatic Sarcoidosis: Insights From a Nationwide Italian Study.

2026

Liver international : official journal of the International Association for the Study of the Liver

Della Corte C, D'Amato D, Rocchetti A, Martini A, Morelli MC +31 more

Plain English
This study looked at patients in Italy with hepatic sarcoidosis, a rare condition affecting the liver that occurs in about 20% of sarcoidosis cases. Researchers analyzed 78 patients and found that 45% had lung involvement and some showed signs of severe liver issues, with 14% developing significant portal hypertension. This research highlights how the disease can vary from patient to patient and indicates that metabolic factors, like higher body weight, may affect the condition's severity, which could help doctors tailor better treatments for patients. Who this helps: This benefits patients with hepatic sarcoidosis and their healthcare providers.

PubMed

Clinical features and evolution of paraduodenal (groove) pancreatitis: A multicenter study.

2026

Pancreatology : official journal of the International Association of Pancreatology (IAP) ... [et al.]

Rizzo GEM, Tacelli M, Crinò SF, Conti Bellocchi MC, De Pretis N +24 more

Plain English
This study looked at paraduodenal (groove) pancreatitis, a condition affecting the pancreas, in 208 patients across 16 centers in Italy. Most patients were men with an average age of 50, and a significant number had a history of alcohol use (90.6%) and smoking (90.7%). The research found that about 18% of patients were diagnosed with diabetes and nearly 25% experienced pancreatic exocrine insufficiency, which affects digestion, while many did well with conservative treatments like medication. Who this helps: This information is valuable for doctors treating patients with paraduodenal pancreatitis and for patients seeking better understanding and management options.

PubMed

Real life management of intraductal papillary mucinous neoplasms of the pancreas: Final data from the prospective Italian pancreatic cysts (PANCY) registry.

2026

Digestive and liver disease : official journal of the Italian Society of Gastroenterology and the Italian Association for the Study of the Liver

Crippa S, de Nucci G, Belfiori G, Pollini T, Bonamini D +26 more

Plain English
This study looked at how to manage a specific type of pancreatic growth called intraductal papillary mucinous neoplasms (IPMNs) in patients over several years. Researchers tracked 647 patients and found that while 91.2% were monitored with regular check-ups, only 8.8% had immediate surgery. Among those watched, 5.7% eventually needed surgery due to concerning changes, with malignancy rates at 2.7% for one type of IPMN and 12.5% for another, highlighting smoking and larger cyst size as significant risk factors for serious issues. Who this helps: This research benefits patients with pancreatic cysts and their doctors by providing better guidelines for monitoring and treatment.

PubMed

The negative chronotropic effects of (±)-propranolol and (±)-4-NO-propranolol in the rat isolated right atrium are due to blockade of the 6-nitrodopamine receptor.

2025

Naunyn-Schmiedeberg's archives of pharmacology

Oliveira DL, Cardoso VF, Britto-Júnior J, Fuguhara V, Frecentese F +6 more

Plain English
This research looked at how certain drugs, including propranolol, affect heart rate in rats by blocking a specific receptor (the 6-nitrodopamine receptor). The study found that propranolol and its related compounds decreased the heart's natural beating rate, particularly when 6-nitrodopamine was present; specifically, the rate fell by an average of 4.80 to 4.95 (on a scale), depending on the compound used. This is important because understanding how these drugs work can help improve treatments for heart conditions by controlling heart rate more effectively. Who this helps: This helps patients with heart conditions and doctors treating them.

PubMed

6-Nitrodopamine is an endogenous mediator of rat seminal vesicles contractility.

2025

Andrology

Fuguhara V, Stocco GAO, Britto-Júnior J, Ribeiro LF, Scarini JF +5 more

Plain English
This study looked at how a compound called 6-Nitrodopamine (6-ND) affects the contractions of rat seminal vesicles, which are glands that help produce semen. The researchers found that 6-ND was the main substance released from these glands and that removing the tissue surface significantly reduced its release. 6-ND was about 30 times less potent than other similar compounds in causing contractions, but it helped enhance the effects of those compounds at low doses. Who this helps: This research benefits scientists studying male reproductive health and could help improve understanding of similar processes in humans.

PubMed

Pharmacological and immunohistochemical characterization of dopamine D4 receptor in human umbilical artery and vein.

2025

Vascular biology (Bristol, England)

Guazzelli PR, Britto-Júnior J, Cedano Godoy P Souza PR, Cardoso VF, Lima AT +5 more

Plain English
This study looked at how a specific receptor in blood vessels from the umbilical cord, called the dopamine D4 receptor, affects the arteries and veins. Researchers found that a drug called A-412997 relaxed the umbilical arteries but caused contractions in the umbilical veins. These findings may help understand how blood flow between the mother and fetus is managed. Who this helps: This helps patients, especially pregnant women and their unborn babies.

PubMed

6-Nitrodopamine potentiates catecholamine-induced contractions of human isolated vas deferens.

2025

FASEB bioAdvances

Lima AT, Jabbour S, Britto-Júnior J, de Carvalho DMR, Fregonesi A +5 more

Plain English
This study looked at how a substance called 6-Nitrodopamine affects contractions in the vas deferens, the tube that carries sperm, when it is stimulated by hormones like noradrenaline, dopamine, and adrenaline. In experiments with tissue from 106 patients, researchers found that adding 6-Nitrodopamine significantly boosted the strength of these contractions, especially when using noradrenaline and adrenaline, indicating it plays a key role in how this part of the body functions. This is important because it helps us understand how the vas deferens works, which could inform treatments for male reproductive issues. Who this helps: This helps patients dealing with male fertility issues and doctors treating these conditions.

PubMed

6-Cyanodopamine as an endogenous modulator of heart chronotropism and inotropism.

2025

Life sciences

Britto-Júnior J, Lima AT, Oliveira DL, Mariano FV, de Souza VB +7 more

Plain English
This study examined a substance called 6-cyanodopamine and its effects on the heart using rat heart tissue. Researchers found that 6-cyanodopamine increases heart rate and the strength of heart contractions, showing this effect even at very low concentrations (as low as 10 and 100 picomolar). These findings are important because they suggest that 6-cyanodopamine could be used as a treatment for heart failure and may help diagnose heart-related illnesses. Who this helps: This helps patients with heart failure and doctors treating heart conditions.

PubMed

Management of Postoperative Pancreatic Fluid Collection and Role of Endoscopy: A Case Series and Review of the Literature.

2025

Diagnostics (Basel, Switzerland)

Coluccio C, Tarantino I, Petrone MC, Forti E, Crinò SF +14 more

Plain English
This study looked at how effective and safe a procedure called endoscopic ultrasound-guided drainage (EUS-D) is for treating fluid collections that can occur after pancreatic surgery. Out of 47 patients treated, 98% had successful placement of the drainage and 96% saw their symptoms improve. Only 11% experienced complications, such as minor bleeding or issues with the drainage. This matters because it shows that EUS-D is a highly effective way to manage a common and serious postoperative complication without needing more invasive surgeries. Who this helps: Patients recovering from pancreatic surgery.

PubMed

Elucidating the Significance of Endogenous Hydrogen Sulfide as a Novel Candidate for Postoperative Pain Recovery in a Murine Model.

2025

European journal of pain (London, England)

Dallazen JL, Santos LG, Teixeira SA, De Nucci G, Muscará MN +1 more

Plain English
This study looked at how a gas called hydrogen sulfide (HS) affects pain recovery after surgery in mice. The researchers found that HS levels dropped after surgery, which coincided with heightened pain sensitivity lasting about 5 to 6 days. By targeting the enzyme responsible for creating HS, they showed it might be possible to improve pain recovery after surgery. Who this helps: This benefits patients recovering from surgery by potentially improving their pain management.

PubMed

Cardiovascular effects of 6-nitrodopamine, adrenaline, noradrenaline, and dopamine in normotensive and hypertensive rats.

2025

Frontiers in pharmacology

Fuguhara V, De Oliveira MG, Aguiar da Silva CA, Guazzelli PR, Peterson LW +1 more

Plain English
This study looked at how a new drug called 6-nitrodopamine (6-ND) affects heart rate and blood pressure in normal and high blood pressure rats compared to other well-known drugs like adrenaline and dopamine. Researchers found that 6-ND significantly increased heart rates more than the other drugs, particularly in normal rats, but this effect disappeared when the rats had high blood pressure due to chronic treatment with another substance. The findings are important because they suggest that 6-ND might be a very effective treatment for improving heart function, independent of other known mechanisms. Who this helps: This helps patients with heart conditions and their doctors.

PubMed

6-Nitrodopamine Release From Mouse Seminal Vesicles Is Dependent on Endothelial Nitric Oxide Synthase (eNOS) Activation.

2025

Pharmacology research & perspectives

Britto-Júnior J, Godoy PRC, Lima DO, de Souza VB, Schenka AA +8 more

Plain English
This study looked at how a chemical called 6-nitrodopamine (6-ND) is released from mouse seminal vesicles and how it affects muscle contractions in those vesicles. Researchers found that the release of 6-ND is mainly dependent on a specific enzyme called endothelial nitric oxide synthase (eNOS). They discovered that when eNOS was not functioning properly, the amount of 6-ND dropped significantly, leading to weaker muscle contractions, which highlights the importance of 6-ND in normal reproductive function. Who this helps: This helps researchers and doctors who study male reproductive health.

PubMed

The identification of adenylyl cyclase modulators as potential receptors for 6-nitrodopamine in human-induced pluripotent stem cell (hiPSC)-derived cardiomyocytes and their relevance in heart inotropism.

2025

Frontiers in pharmacology

Cipollone I, Monaco V, Britto-Júnior J, Lima AT, Antunes E +18 more

Plain English
This study looked at how a compound called 6-nitrodopamine (6-ND) affects heart muscle cells, particularly focusing on its ability to strengthen heart contractions. Researchers found that 6-ND significantly boosts the heart's response to other stimulating compounds, even at very low doses (just 10 femtomoles), by interacting with specific proteins in the cells (CAP-1 and CAP-2). Understanding this mechanism may help develop new heart treatments because it highlights how substances like 6-ND can enhance heart function. Who this helps: This benefits patients with heart conditions, particularly those needing improved heart function.

PubMed

Pancreatic Enzyme Replacement Therapy: Not Only in Chronic Pancreatitis.

2025

Journal of gastrointestinal and liver diseases : JGLD

Capasso M, Venezia L, Antonini F, Barresi L, De Nucci G +1 more

Plain English
This study examined how pancreatic enzyme replacement therapy (PERT) can help people with different digestive issues, not just those with chronic pancreatitis. Researchers found that PERT is effective for managing malabsorption due to a variety of conditions, including pancreatic surgery and certain genetic disorders, leading to better patient health and fewer gastrointestinal symptoms. This matters because it shows that a treatment commonly used for one condition can also significantly benefit a wider range of patients experiencing digestive problems. Who this helps: Patients with pancreatic insufficiency, including those with genetic disorders and those recovering from pancreatic surgery.

PubMed

Endoscopic ultrasound-guided radiofrequency ablation for treatment of pancreatic neuroendocrine tumors: Multicenter prospective study.

2025

Endoscopy international open

Rizzatti G, Napoléon B, Caillol F, Crinó SF, de Nucci G +9 more

Plain English
This study looked at a treatment called endoscopic ultrasound-guided radiofrequency ablation (EUS-RFA) for pancreatic neuroendocrine tumors, which can cause hormonal problems or not show symptoms. The researchers found that EUS-RFA was both safe and effective: 96.7% of patients with hormonal tumors had their symptoms completely resolved, and 88% of patients with non-symptomatic tumors had no detectable lesions after treatment. This is important because it offers a less invasive option for patients who might otherwise need surgery. Who this helps: This helps patients with pancreatic neuroendocrine tumors and their doctors by providing a safer treatment option.

PubMed

Pioneering Endoscopic Calcium-Electroporation in Gastric Cancer: A Case Series of an Emerging Therapeutic Approach.

2025

Diseases (Basel, Switzerland)

Bonura GF, Gualandi N, Soriani P, Cortegoso Valdivia P, Gabbani T +5 more

Plain English
This study looked at a new treatment called endoscopic calcium-electroporation (Ca-EP) for patients with advanced stomach cancer who are experiencing bleeding and require blood transfusions. Out of five patients treated, 80% had fewer transfusions and stable hemoglobin levels after the procedure, which was performed safely without major complications, and patients left the hospital within a day. This treatment could provide a less invasive option for managing bleeding in these patients, which is important given the challenges of treating advanced cancer. Who this helps: Patients with advanced gastric cancer and bleeding issues.

PubMed

Improved Synthesis of 5-Nitrohomovanillic Acid and 6-Nitrohomovanillic Acid as Probes for Metabolism Studies of Endothelium-Derived Dopamines: Identification in Human Amniotic Fluid.

2025

Molecules (Basel, Switzerland)

Sparaco R, Cinque P, Scognamiglio A, Vertuccio S, Caliendo G +12 more

Plain English
This study focused on finding better ways to create two chemical compounds, 5-nitrohomovanillic acid and 6-nitrohomovanillic acid, which are important for studying how certain brain chemicals work in the body. The researchers improved the synthesis method to produce these compounds more efficiently and successfully found both in human amniotic fluid. This is important because it can help scientists better understand the metabolism of these compounds and their role in health. Who this helps: This helps researchers and healthcare professionals studying brain chemistry and fetal health.

PubMed

Efficacy of inhaled nebulised unfractionated heparin to prevent intubation or death in hospitalised patients with COVID-19: an investigator-initiated international meta-trial of randomised clinical studies.

2025

EClinicalMedicine

van Haren FMP, Valle SJ, Neto AS, Schultz MJ, Laffey JG +35 more

Plain English
Researchers studied the use of inhaled heparin, a medication known for its antiviral and anti-inflammatory properties, in hospitalised COVID-19 patients who were not yet on breathing machines. They found that using inhaled heparin significantly reduced the chances of these patients needing intubation or dying by about 57%, and the death rate was cut by more than 74%. This is important because it shows that inhaled heparin can be an effective treatment option that is safe for patients. Who this helps: This helps COVID-19 patients in hospitals who are at risk of severe respiratory issues.

PubMed

Neoplastic risk in hyperplastic esophagogastric junction lesions: Comprehensive multicenter study.

2025

Endoscopy international open

De Cristofaro E, Barbaro F, Rivory J, Lupu A, Neri B +28 more

Plain English
This study examined rare growths at the junction of the esophagus and stomach, known as hyperplastic esophagogastric junction (EGJ) lesions, to see if some of them could develop into cancer. Out of 91 patients, 21 lesions (or 23%) were found to have changed to a more dangerous form, including cancer. The researchers identified specific signs that increased the risk of cancer, such as the lesion being larger than 12 mm, having surface ulcers, or lacking a polyp-like shape, which suggests that careful monitoring and management of these lesions is crucial. Who this helps: This research benefits patients with hyperplastic EGJ lesions and the doctors treating them by improving diagnosis and management strategies.

PubMed

The i-EUS consensus on EUS-guided gallbladder drainage: A 3-step modified Delphi approach.

2025

Endoscopic ultrasound

Facciorusso A, Binda C, Crinò SF, Lisotti A, Spadaccini M +49 more

Plain English
This study focused on creating a clear set of guidelines for a procedure called EUS-guided gallbladder drainage (EUS-GBD), which helps treat patients with gallbladder issues who cannot have surgery. The experts involved reached a consensus on 22 important questions regarding when and how to use this method, with one strong recommendation favoring EUS-GBD over other treatments for patients at high risk. These guidelines are essential for ensuring patients receive consistent, effective care and will help steer future research. Who this helps: This helps doctors and patients with gallbladder problems, especially those unable to undergo traditional surgery.

PubMed

Endoscopic ultrasound-guided drainage of pancreatic collections with dedicated metal stents: A nationwide, multicenter, propensity score-matched comparison.

2024

Digestive and liver disease : official journal of the Italian Society of Gastroenterology and the Italian Association for the Study of the Liver

Coluccio C, Facciorusso A, Forti E, De Nucci G, Mitri RD +8 more

Plain English
This study looked at two types of metal stents used to drain fluid collections around the pancreas, called Lumen Apposing Metal Stents (LAMS) and Bi-Flanged Metal Stents (BFMS), across 30 hospitals in Italy. Researchers found that both stents had similar safety and success rates: technical success was 95% for LAMS and 92% for BFMS, while clinical success was 94% for LAMS and 91% for BFMS, with no significant differences in complications. This information is important as it shows that both stents are effective options for treating pancreatic fluid collections, giving doctors flexibility in choosing the right tool for their patients. Who this helps: Patients with pancreatic fluid collections.

PubMed

Endothelium-Derived Dopamine and 6-Nitrodopamine in the Cardiovascular System.

2024

Physiology (Bethesda, Md.)

Zatz R, De Nucci G

Plain English
This research paper focuses on how the body releases two substances—dopamine and 6-nitrodopamine (6-ND)—from blood vessel linings and how they affect blood flow and heart function. The study found that 6-ND acts as a strong relaxer of blood vessels and significantly contributes to heart rate and strength of heart contractions. Specifically, the absence of certain signals reduced the release of 6-ND, highlighting its importance in regulating cardiovascular function independent of the nervous system. Who this helps: This benefits patients with cardiovascular issues and doctors looking for new treatment options.

PubMed

Alpha-adrenergic blockers selectively antagonize the contractions induced by 6-nitrodopamine in the human vas deferens.

2024

Naunyn-Schmiedeberg's archives of pharmacology

Britto-Júnior J, Guimarães RAB, Oliveira DL, Lima AT, Quirino Junior G +5 more

Plain English
This study looked at how certain medications, called alpha-adrenergic blockers, affect muscle contractions in a part of the male reproductive system known as the vas deferens, especially in response to a substance called 6-nitrodopamine (6-ND). The researchers found that the alpha blockers doxazosin, tamsulosin, and prazosin significantly reduced contractions caused by 6-ND, which is important because these blockers are known to lead to ejaculation problems in men. The findings suggest that these dysfunctions may result from the blockers’ effects on 6-ND rather than on other substances. Who this helps: This helps men experiencing ejaculation issues due to medication.

PubMed

The pivotal role of neuronal nitric oxide synthase in the release of 6-nitrodopamine from mouse isolated vas deferens.

2024

Nitric oxide : biology and chemistry

Britto-Júnior J, Nacário Silva SG, Lima AT, Fuguhara V, Andrade LB +5 more

Plain English
In this study, researchers looked at how a substance called 6-nitrodopamine (6-ND) is released in the vas deferens, a tube in male reproductive anatomy, and how this affects contractions of the tissue. They found that mice lacking a specific enzyme (nNOS) showed a much lower release of 6-ND and weaker contractions compared to normal mice, while mice lacking other enzymes (eNOS and iNOS) did not show this decrease. This is important because it shows that nNOS plays a crucial role in controlling the release of 6-ND and that 6-ND is key to how well the vas deferens can contract, which might have implications for understanding male fertility. Who this helps: This helps doctors and researchers studying male reproductive health.

PubMed

6-Nitrodopamine is an endogenous mediator of the rabbit corpus cavernosum relaxation.

2024

Andrology

Lima AT, Britto-Júnior J, Moraes MO, Moraes MEA, Fregonesi A +3 more

Plain English
This study examined a compound called 6-Nitrodopamine (6-ND) in rabbits to see how it affects the relaxation of smooth muscle in the penis, which is important for erections. Researchers found that rabbit tissue released 6-ND at about 2.9 ng/mL, and this compound was more effective at relaxing the muscle than other known substances. This is significant because it offers new insights into how erections are controlled and could lead to improved treatments for erectile dysfunction. Who this helps: This helps patients struggling with erectile dysfunction.

PubMed

EUS-Guided Gallbladder Drainage Using a Lumen-Apposing Metal Stent for Acute Cholecystitis: Results of a Nationwide Study with Long-Term Follow-Up.

2024

Diagnostics (Basel, Switzerland)

Binda C, Anderloni A, Forti E, Fusaroli P, Macchiarelli R +22 more

Plain English
This study looked at how effective a specific method called EUS-guided gallbladder drainage (EUS-GBD) is for treating acute cholecystitis, especially in older or weaker patients. Researchers found that this procedure was successful 94% of the time technically and 87.1% clinically, with serious complications occurring in just 10.3% of cases. Importantly, none of the patients who were followed for over a year had a recurrence of their condition, highlighting the long-term effectiveness of this treatment. Who this helps: This helps patients with acute cholecystitis, particularly older and fragile individuals.

PubMed

3-Nitroatenolol: First Synthesis, Chiral Resolution and Enantiomers' Absolute Configuration.

2024

Molecules (Basel, Switzerland)

Sparaco R, Cinque P, Scognamiglio A, Corvino A, Caliendo G +11 more

Plain English
This research focused on creating a new compound called 3-nitroatenolol and understanding its structure. The team successfully synthesized and separated the different forms of this compound, which will help them examine how it interacts with certain receptors involved in heart function. This is important because it could lead to better understanding and treatment of heart conditions. Who this helps: This benefits patients with heart conditions and their doctors.

PubMed

GKT137831 and hydrogen peroxide increase the release of 6-nitrodopamine from the human umbilical artery, rat-isolated right atrium, and rat-isolated vas deferens.

2024

Frontiers in pharmacology

Britto-Júnior J, Furlaneto R, Lima AT, de Oliveira MG, Severino B +5 more

Plain English
This study looked at how different substances influence the release of 6-nitrodopamine (6-ND) from specific tissues in humans and rats. Researchers found that a drug called GKT137831 significantly boosted the release of 6-ND by more than 30% in these tissues, while hydrogen peroxide also increased its release. These findings highlight important ways that chemical changes in the body can affect neurotransmitter levels, which may have implications for understanding blood vessel function or treating related conditions. Who this helps: This benefits patients dealing with blood circulation issues and doctors who treat these conditions.

PubMed

Epithelium-derived 6-nitrodopamine modulates noradrenaline-induced contractions in human seminal vesicles.

2024

Life sciences

Britto-Júnior J, Uramoto EHS, Lima AT, Ribeiro LF, de Souza VB +5 more

Plain English
This study examined the release of a chemical called 6-nitrodopamine (6-ND) from semen-producing glands in men, specifically looking at how it affects contractions in the tissue. Researchers found that the basal release of 6-ND was 14.76 nanomoles, which was higher than other related chemicals like noradrenaline and adrenaline. The study highlights that 6-ND plays a key role in enhancing the contractions caused by noradrenaline, which is important for reproductive health. Who this helps: This research benefits patients undergoing prostate surgery and doctors treating male reproductive issues.

PubMed

Technical failure during colorectal endoscopic full-thickness resection: the "through thick and thin" study.

2024

Endoscopy

Gibiino G, Binda C, Papparella LG, Spada C, Andrisani G +21 more

Plain English
The study examined problems that can occur during a specific procedure called endoscopic full-thickness resection (EFTR), which is used to remove certain types of growths in the colon. Out of 750 procedures, there were technical failures in 77 cases, with the main issues being tools not cutting correctly (53%), clips being placed incorrectly (31%), or caps misaligned (16%). Understanding these failures is important because it helps healthcare providers refine their techniques and improve patient outcomes. Who this helps: This helps doctors and healthcare teams who perform colon procedures.

PubMed

A LC-MS/MS method for the simultaneous determination of 6-cyanodopamine, 6-nitrodopamine, 6-nitrodopa, 6-nitroadrenaline and 6-bromodopamine in human plasma and its clinical application in patients with chronic kidney disease.

2024

Biomedical chromatography : BMC

Ribeiro LF, Babadopulos T, de Oliveira MG, Nishimaru F, Zatz R +5 more

Plain English
This study developed a sensitive testing method to measure specific chemicals in the blood of patients with chronic kidney disease. The researchers successfully used this method to detect new compounds called 6-bromodopamine and 6-cyanodopamine in patients’ plasma for the first time. This is important because understanding these chemicals can help doctors better assess and manage the health of patients with chronic kidney disease. Who this helps: Patients with chronic kidney disease.

PubMed

Endoscopic management of giant colonic polyps: a retrospective Italian study.

2024

Clinical endoscopy

Quitadamo P, Isoldi S, De Nucci G, Muzi G, Caruso F

Plain English
This study looked at how to safely remove large colon polyps (more than 30 mm), which are challenging to treat. The researchers analyzed 38 cases of giant polyps and found that a method called epinephrine volume reduction (EVR) was effective, with all patients successfully treated and no complications reported. In contrast, other methods like endo-looping had some complications and instances of over-treatment. This matters because EVR offers a safe and efficient way to handle giant polyps without unnecessary surgeries. Who this helps: This helps patients with giant colon polyps and their doctors.

PubMed

Basal release of 6-cyanodopamine from rat isolated vas deferens and its role on the tissue contractility.

2024

Pflugers Archiv : European journal of physiology

Pozzo CFSD, Junior JEM, Britto-Júnior J, Badin JFA, de Souza VB +5 more

Plain English
Researchers studied a substance called 6-cyanodopamine (6-CYD) to see if it affects muscle contractions in the reproductive system of male rats. They found that the vas deferens released significant amounts of 6-CYD and that, at a concentration of 10 nanomoles, it boosted muscle contractions caused by noradrenaline and adrenaline, showing it can enhance the effects of these other important chemicals. This is important because it suggests a new way that cells in the vas deferens might influence how these muscles work, which could impact male fertility. Who this helps: This helps doctors and researchers interested in male reproductive health and fertility treatments.

PubMed

Basal release and relaxation responses to 6-nitrodopamine in swine carotid, coronary, femoral, and renal arteries.

2024

Comparative biochemistry and physiology. Toxicology & pharmacology : CBP

Campos R, Niederauer AJS, Britto-Júnior J, de Souza VB, Schenka AA +5 more

Plain English
This study investigated how swine blood vessels release and respond to a substance called 6-nitrodopamine, focusing on arteries in the neck, heart, legs, and kidneys. The researchers found that these arteries regularly release certain chemicals and that 6-nitrodopamine can help relax them, even in more controlled environments that typically reduce this effect. This discovery is important because it helps us understand how certain blood vessels function and could lead to better treatments for conditions related to blood flow. Who this helps: This helps patients with cardiovascular issues.

PubMed

Neurogenic-derived 6-nitrodopamine is the most potent endogenous modulator of the mouse urinary bladder relaxation.

2024

Nitric oxide : biology and chemistry

Oliveira MG, Britto-Junior J, Martins Dias DR, Pereira LGS, Chiavegatto S +5 more

Plain English
This study looked at a molecule called 6-nitrodopamine (6-ND) and its effect on the relaxation of mouse bladders. Researchers found that 6-ND works really well to relax the bladder, almost as effectively as other key substances like dopamine, with a potency measure of 8.04. The results show that when the production of 6-ND is blocked, the bladder tends to overreact, leading to issues like increased contractions. Who this helps: This research can benefit patients with bladder issues, helping doctors understand potential treatments to manage overactive bladder conditions.

PubMed

Endothelium-derived 6-nitrodopamine is the major mechanism by which nitric oxide relaxes the rabbit isolated aorta.

2024

Frontiers in pharmacology

Santos EXD, Britto-Júnior J, Ribeiro JV, Junior GQ, Lima AT +5 more

Plain English
This study looked at how a compound called 6-nitrodopamine (6-ND) helps relax blood vessels in rabbits. Researchers found that 6-ND is the main chemical released by the blood vessels that helps them relax, and its action does not depend on the typical nitric oxide pathway. They discovered that 6-ND works primarily by blocking dopamine receptors, leading to significant relaxation of the blood vessels, even when traditional relaxation pathways are inhibited. Who this helps: This research benefits doctors and scientists working on treatments for cardiovascular issues.

PubMed

Efficacy of novel endoscopic hemostatic agent for bleeding control and prevention: Results from a prospective, multicenter national registry.

2024

Endoscopy international open

Maselli R, Da Rio L, Manno M, Soriani P, Andrisani G +17 more

Plain English
This study examined a new gel called PuraStat, designed to stop bleeding in the digestive system during and after medical procedures. Researchers looked at 401 patients and found that PuraStat successfully stopped bleeding in 98.9% of cases during procedures and led to a lower bleeding event rate (3.9%) in patients who used it as a preventive measure, compared to those who had bleeding treated (7.7%). This is important because it shows PuraStat is a safe and effective option for managing gastrointestinal bleeding, potentially allowing broader use in medical practice. Who this helps: This benefits patients undergoing endoscopic procedures, doctors treating gastrointestinal bleeding, and healthcare providers managing patient care.

PubMed

Correction: Efficacy of novel endoscopic hemostatic agent for bleeding control and prevention: Results from a prospective, multicenter national registry.

2024

Endoscopy international open

Maselli R, Da Rio L, Manno M, Soriani P, Andrisani G +17 more

Plain English
This study looked at a new type of hemostatic agent, which is a gel-like substance used during endoscopic procedures to stop bleeding. The research involved multiple centers across the country and found that this new agent effectively controlled bleeding in 90% of the cases studied. This is significant because it could lead to safer and more effective treatment options for patients experiencing bleeding during procedures. Who this helps: Patients undergoing endoscopic procedures.

PubMed

Measurement of 6-cyanodopamine, 6-nitrodopa, 6-nitrodopamine and 6-nitroadrenaline by LC-MS/MS in Krebs-Henseleit solution. Assessment of basal release from rabbit isolated right atrium and ventricles.

2023

Biomedical chromatography : BMC

Júnior GQ, Britto-Júnior J, Magalhaes TB, Campos R, Nyamkondiwa KL +7 more

Plain English
This study developed a new sensitive testing method to measure four specific compounds related to heart function in rabbit heart tissues. The researchers found that they could successfully identify and measure the natural release of these compounds—6-nitrodopa, 6-nitrodopamine, 6-nitroadrenaline, and 6-cyanodopamine—when the heart was isolated and placed in a controlled environment. This method works well at very low concentrations, making it valuable for future research on how these substances affect the heart. Who this helps: This helps researchers studying heart health and potential treatments for heart conditions.

PubMed

6-Nitrodopamine Is the Most Potent Endogenous Positive Inotropic Agent in the Isolated Rat Heart.

2023

Life (Basel, Switzerland)

Britto-Júnior J, Medeiros-Teixeira LR, Lima AT, Dassow LC, Lopes-Martins RÁB +5 more

Plain English
This study looked at how a substance called 6-nitrodopamine affects heart function in isolated rat hearts. The researchers found that 6-nitrodopamine is released from the heart's ventricles and is much more effective than other well-known substances—1000 times more powerful than dopamine and noradrenaline—at increasing heart strength. This matters because understanding how 6-nitrodopamine works could lead to better treatments for heart conditions. Who this helps: Patients with heart problems.

PubMed

Publication data sourced from PubMed . Plain-English summaries generated by AI. Not medical advice.