Gut microbiota predicts severity and reveals novel metabolic signatures in acute pancreatitis.

OBJECTIVE: Early disease prediction is challenging in acute pancreatitis (AP). Here, we prospectively investigate whether the microbiome predicts severity of AP (Pancreatitis-Microbiome As Predictor of Severity; P-MAPS) early at hospital admission. DESIGN: Buccal and rectal microbial swabs were collected from 424 patients with AP within 72 hours of hospital admission in 15 European centres. All samples were sequenced by full-length 16S rRNA and metagenomic sequencing using Oxford Nanopore Technologies. Primary endpoint was the association of the orointestinal microbiome with the revised Atlanta classification (RAC). Secondary endpoints were mortality, length of hospital stay and severity (organ failure >48 hours and/or occurrence of pancreatic collections requiring intervention) as post hoc analysis. Multivariate analysis was conducted from normalised microbial and corresponding clinical data to build classifiers for predicting severity. For functional profiling, gene set enrichment analysis (GSEA) was performed and normalised enrichment scores calculated. RESULTS: After data processing, 411 buccal and 391 rectal samples were analysed. The intestinal microbiome significantly differed for the RAC (Bray-Curtis, p value=0.009), mortality (Bray-Curtis, p value 0.006), length of hospital stay (Bray-Curtis, p=0.009) and severity (Bray-Curtis, p value=0.008). A classifier for severity with 16 different species and systemic inflammatory response syndrome achieved an area under the receiving operating characteristic (AUROC) of 85%, a positive predictive value of 67% and a negative predictive value of 94% outperforming established severity scores. GSEA revealed functional pathway units suggesting elevated short-chain fatty acid (SCFA) production in severe AP. CONCLUSIONS: The orointestinal microbiome predicts clinical hallmark features of AP, and SCFAs may be used for future diagnostic and therapeutic concepts. TRIAL REGISTRATION NUMBER: NCT04777812.

Anemia can predict organ failure in acute pancreatitis.

Acute pancreatitis (AP) is the leading hospital admission in Gastroenterology and has a variable clinical course. Identifying severity of AP patients in its early stages is of foremost importance to improve prognosis. The revised Atlanta Classification grades AP severity by the presence of organ failure and local complications.

The enigmatic triad, a clinical challenge.

The concomitant occurrence of diabetic ketoacidosis (DKA), hypertriglyceridemia (HTG) and acute pancreatitis (AP) was first described by Nair et al. as "The Enigmatic Triad", because the causal factor of AP is still not fully established. We recently attended a patient with this triad.

Value of CRP/albumin ratio as a prognostic marker of acute pancreatitis: a retrospective study.

INTRODUCTION: the C-reactive protein (CRP) to albumin ratio is an inflammatory marker that has shown promise in the prognosis of critically ill patients. This study is aimed to assess the value of CRP/albumin ratio to predict severity in acute pancreatitis. METHODS: a retrospective study was performed using a prospectively collected database of patients diagnosed with AP admitted to the Department of Gastroenterology between March 2014 and December 2021. RESULTS: among 722 patients included in the study, 78.67 % had mild, 15.65 % had moderately severe, and 5.67 % had severe acute pancreatitis. The CRP/albumin ratio was significantly associated with severe AP (OR 1.02; 95 % CI: 1.01-1.03; p < 0.001), and each ten-unit increase in the ratio was associated with a 20 % increased likelihood of severe acute pancreatitis. The area under the ROC curve (AUC) value of the CRP/albumin ratio in severe acute pancreatitis was 0.68 (95 % CI: 0.58-0.77), which was higher than that of the Ranson criteria (0.62). The optimal cut-off value for predicting severe acute pancreatitis was 7.51, with a sensitivity of 63.4 % and specificity of 65.6 %. CONCLUSIONS: despite its low sensitivity and specificity, the CRP/albumin ratio could be used as a complementary marker to the current scoring systems for the initial assessment of acute pancreatitis prognosis. It is easily obtainable and can provide additional prognostic information to clinicians.

Colon necrosis in acute severe pancreatitis.

A 78 year-old woman was admitted for biliary acute pancreatitis (AP). Fluid and analgesia were initially administered. Her clinical course was poor with persisting abdominal pain, intestinal paresis and fever development. On her 7th admission day a contrast-enhanced computed tomography scan was performed where a huge necrotic peripancreatic collection was found with gastric compression .

Influence of enlarged waist circumference and hypertriglyceridemia in the severity of acute pancreatitis: A retrospective study.

INTRODUCTION: Acute pancreatitis is a frequent inflammatory gastrointestinal disorder with high mortality rates in severe forms. An early evaluation of its severity is key to identify high-risk patients. This study assessed the influence of waist circumference together with hypertriglyceridemia on the severity of acute pancreatitis. METHODS: A retrospective study was performed, which included patients admitted with acute pancreatitis from March 2014 to March 2021. Patients were classified into four phenotype groups according to their waist circumference and triglyceride levels: normal waist circumference and normal triglycerides; normal waist circumference and elevated triglycerides; enlarged waist circumference and normal triglycerides; and enlarged waist circumference and triglycerides, namely hypertriglyceridemic waist (HTGW) phenotype. Clinical outcomes were compared among the groups. RESULTS: 407 patients were included. Systemic inflammatory response syndrome (SIRS) and intensive care unit admission were most frequent among patients in the HTGW phenotype group, at 44.9% and 8.2%, respectively. The incidence of local complications was higher in the normal waist circumference with elevated triglycerides group (27%). On multivariable analysis, an enlarged waist circumference was related to an increase of 4% and 2% in the likelihood of developing organ failure and SIRS, respectively. Hypertriglyceridemia was an independent risk factor for both organ failure and local complications. CONCLUSIONS: HTGW phenotype was significant related to developing of SIRS. It seems that an enlarged waist circumference has a greater role than hypertriglyceridemia in the development of SIRS. Obesity and hypertriglyceridemia were both independent risk factors for organ failure. Patients with hypertriglyceridemia were more likely to develop local complications.

Recurrent acute pancreatitis is not uncommon in our clinical setting.

Data on recurrent episodes of acute pancreatitis (RAP) are scarce. The aim of the study was to evaluate our rate of RAP and risks factors. This is a retrospective, single-center, study of consecutive patients admitted for AP and followed-up. Patients with more than one AP attack (RAP) were compared with patients with only a single AP episode (SAP) Clinical, demographic, outcome measures and severity were studied. 561 patients were included and follow-up over a mean 67.63 months' time. Our rate of RAP was 18,9%. Most patients suffered form only one episode of RAP (93%). Etiology of RAP episodes was mainly biliary (67%). On univariate analysis younger age (p 0.004), absence of high blood pressure (p 0.013) and absent of SIRS (p 0.022) were associated with recurrence of AP. On multivariate analysis only younger age was related to RAP (OR 1.015 95%IC 1.00-1.029). There were no statistical differences in outcome measures between both cohorts. RAP had a milder course in terms of severity (SAP 19% moderately severe/severe versus 9% in SAP). Almost 70% of the biliary RAP patients did not have a cholecystectomy performed. In this subset of patients, age OR 0.964 (95%IC 0.946-0.983), cholecystectomy OR 0.075 (95%IC 0.189-0.030) and cholecystectomy plus ERCP OR 0.190 (95%IC 0.219-0.055) were associated with absent of RAP. The rate of RAP in our series was 18,9%. Younger age was the only risk factor associated. Biliary etiology accounts for a large proportion of our RAP which could have been prevented with cholecystectomy or cholecystectomy plus ERCP.

Recurrent acute biliary pancreatitis - A frequent and preventable condition potentially associated with morbidity and mortality.

Recurrent acute biliary pancreatitis (RABP) is a common condition associated with an increase in hospital admissions, morbidity, mortality, and healthcare costs. This editorial will attempt to discuss the issue's current status as well as actions for its prevention.

Chronic diarrhea due to autoimmune enteropathy.

Chronic diarrhea is a common symptom seen in the Gastroenterology clinic. Occasionally, the diagnosis is a real challenge as there are multiple entities with unremitting diarrhea as a symptom. Herein, we present a patient affected with intractable diarrhea who was transferred to our department. After many laboratory, endoscopy and radiological tests, she was diagnosed with autoimmune enteropathy (AE) and achieved clinical remission with corticosteroids and azathioprine.

Esophageal actinomycosis mimicking a carcinoma.

A 75-year-old male was referred due to dysphagia and iron-deficiency anemia. An upper endoscopy was performed which revealed a friable mass at 30 to 37 cm from the incisors, consistent with esophageal malignancy. However, the pathology only demonstrated granulation inflammatory tissue. An endoscopic ultrasound exam showed a 2-3 cm esophageal wall thickening with a 1.5 cm lymph node, which was staged as a T2-3 N1 esophageal tumor. A CT-scan also identified a 7.5 cm esophageal malignancy surrounded by several large pathological lymph nodes.

Statin intake can decrease acute pancreatitis severit.

BACKGROUND/OBJECTIVES: Acute Pancreatitis (AP) is one of the leading gastrointestinal conditions requiring hospitalization. It has been suggested that statins could exert a protective role in the natural history of AP; however, their influence is not entirely clear. Our objective was to investigate the relationship between statin intake and AP. METHODS: Retrospective analysis of a prospective registry of patients diagnosed with AP. Statin intake on admission as well as clinical, analytical, demographic and radiological data were recorded. OUTCOME PARAMETERS: Severity of AP, SIRS development, organ failure, local complications, intensive care admission, collection drainage, hospital length of admission, and death. Univariate and multivariate analyses as well as a propensity score logistic regression were conducted. RESULTS: From March 2014-October 2018 we studied 356 patients. 101 patients (28%) were taking statins. 55 (15%) suffered from moderate/severe pancreatitis. Multivariate analysis showed a 50% less risk of suffering from moderate/severe AP (OR 0.50 95% CI 0.22-1.0, p 0.50) and 33% less risk of developing local complications (OR 0.33 95%CI 0.15-0.80, p 0.014) among statin consumers, with a tendency towards less SIRS. Propensity score analysis confirmed that patients on statins suffering from AP had a lower risk to have a moderate/severe episode (OR 0.409 95%CI 0.192-0.872, p 0.031), to develop local complications (OR 0.47 95%CI 0.20-1.06, p 0.11) and SIRS (OR 0.516 95% CI 0.28-0.93, p 0.041). CONCLUSIONS: Patients taking statins who suffer from an episode of AP are more likely to follow a mild course and have a lower risk of developing local complications and SIRS.

Endoscopic diagnosis of asymptomatic perforation of colonic diverticulum.

Colonic perforation as complication of acute diverticulitis is a relatively frequent pathology and generally very symptomatic. Nevertheless, when it occurs in the mesenteric border the course can be indolent.

Aetiology and prevalence of post-colonoscopy colorrectal cancer. / Etiología y prevalencia de los cánceres colorrectales poscolonoscopia.

BACKGROUND: Colonoscopy is the gold standard for the detection and prevention of colorectal cancer (CRC). However, some individuals are diagnosed with CRC soon after a previous colonoscopy. AIMS: To evaluate the rate of new onset or missed CRC after a previous colonoscopy and to study potential risk factors. METHODS: Patients in our endoscopy database diagnosed with CRC from March 2004 to September 2011 were identified, selecting those with a colonoscopy performed within the previous 5years. Medical records included age, gender, comorbidities and colonoscopy indication. Tumour characteristics studied were localization, size, histological grade and TNM stage and possible cause. These patients were compared with those diagnosed with CRC at their first endoscopy (sporadic CRC-control group). RESULTS: A total of 712 patients with CRC were included; 24 patients (3.6%) had undergone colonoscopy within the previous 5 years (50% male, 50% female, mean age 72). Post-colonoscopy CRCs were attributed to: 1 (4.2%) incomplete colonoscopy, 4 (16.6%) incomplete polyp removal, 1 (4.2%) failed biopsy, 8 (33.3%) 'missed lesions' and 10 (41.7%) new onset CRC. Post-colonoscopy CRCs were smaller in size than sporadic CRCs (3.2cm vs. 4.5cm, P<.001) and were mainly located in the proximal colon (63% vs. 35%, P=.006); no difference in histological grade was found (P=.125), although there was a tendency towards a lower TNM stage (P=.053). CONCLUSIONS: There is a minor risk of CRC development after a previous colonoscopy (3.6%). Most of these (58.4%) are due to preventable factors. Post-colonoscopy CRCs were smaller and mainly right-sided, with a tendency towards an earlier TNM stage.

BEHIND THE PROTON PUMP INHIBITOR PRESCRIPTION: AN INTERNATIONAL SURVEY ON PHYSICIAN PRACTICES AND KNOWLEDGE.

BACKGROUND: Proton pump inhibitors (PPIs) are widely prescribed worldwide, often resulting in their overuse. Consequently, it is essential to identify the likely causes of this overuse to facilitate their appropriate prescription. OBJECTIVE: This study aims to assess physician prescribing patterns, their knowledge of PPIs, and factors affecting their knowledge. METHODS: An online survey was conducted among Latin American and Spanish physicians, collecting the following data: professional information, patterns of PPI usage, familiarity with published evidence, and the management approach in three hypothetical case-scenarios. Participant knowledge was categorized as sufficient or insufficient based on the results of the case scenarios. Subsequently, subgroup analysis was performed based on physician training level, years in practice, specialty, and time since the last PPI literature review. RESULTS: A total of 371 physicians participated in the survey. Thirty-eight percent frequently prescribe PPIs, primarily for prophylactic purposes (57.9%). Eighty percent were unfamiliar with PPI deprescribing strategies, and 54.4% rarely reviewed the ongoing indication of patients taking a PPI. Sixty-four percent demonstrated sufficient knowledge in the case-scenarios. A significant association was observed between specialty type (medical vs surgical: 69.4% vs 46.8%, P<0.001), the timing of the PPI indication literature review (<5 years vs >5 years: 71.4% vs 58.7%, P=0.010), and sufficient knowledge. CONCLUSION: While most participants prescribed PPIs regularly and for prophylaxis purposes, the majority were unfamiliar with deprescribing strategies and rarely reviewed ongoing indications. Sufficient knowledge is correlated with recent literature reviews and medical specialty affiliation. BACKGROUND: • The study aims to evaluate physician prescribing patterns, assess their knowledge of proton pump inhibitors, and identify factors influencing their knowledge. BACKGROUND: • An online survey of Latin American and Spanish physicians assessed proton pump inhibitor usage patterns and case-scenario responses, categorizing knowledge, and conducting subgroup analysis based on training, experience, specialty, and literature review timing. BACKGROUND: • Thirty-eight percent of surveyed physicians commonly prescribed proton pump inhibitors, and among them, 80% were unfamiliar with deprescribing strategies, with 54.4% rarely reviewing ongoing indications. BACKGROUND: • Sufficient knowledge was correlated with recent literature reviews and medical specialty affiliations.

[Amoxicillin-induced cholestatic hepatitis]. / Hepatitis colestásica por amoxicilina.

Drug-induced hepatotoxicity is a challenge in daily clinical practice. One of the most frequent causes is antibiotics. However, amoxicillin-induced liver injury is uncommon. We report the case of an 87-year-old man who developed cholestatic hepatitis after ingesting amoxicillin 500 mg/8 hours for dental disease. A review of the literature on this topic is provided.