Dietary Fat Patterns and Outcomes in Acute Pancreatitis in Spain

Intrapancreatic fat, pancreatitis, and pancreatic cancer

Pancreatic cancer is typically detected at an advanced stage, and is refractory to most forms of treatment, contributing to poor survival outcomes. The incidence of pancreatic cancer is gradually increasing, linked to an aging population and increasing rates of obesity and pancreatitis, which are risk factors for this cancer. Sources of risk include adipokine signaling from fat cells throughout the body, elevated levels of intrapancreatic intrapancreatic adipocytes (IPAs), inflammatory signals arising from pancreas-infiltrating immune cells and a fibrotic environment induced by recurring cycles of pancreatic obstruction and acinar cell lysis. Once cancers become established, reorganization of pancreatic tissue typically excludes IPAs from the tumor microenvironment, which instead consists of cancer cells embedded in a specialized microenvironment derived from cancer-associated fibroblasts (CAFs). While cancer cell interactions with CAFs and immune cells have been the topic of much investigation, mechanistic studies of the source and function of IPAs in the pre-cancerous niche are much less developed. Intriguingly, an extensive review of studies addressing the accumulation and activity of IPAs in the pancreas reveals that unexpectedly diverse group of factors cause replacement of acinar tissue with IPAs, particularly in the mouse models that are essential tools for research into pancreatic cancer. Genes implicated in regulation of IPA accumulation include KRAS, MYC, TGF-β, periostin, HNF1, and regulators of ductal ciliation and ER stress, among others. These findings emphasize the importance of studying pancreas-damaging factors in the pre-cancerous environment, and have significant implications for the interpretation of data from mouse models for pancreatic cancer.

Progression to recurrent acute pancreatitis after a first attack of acute pancreatitis in adults

PURPOSE

Patients with a first attack of acute pancreatitis (AP) can develop recurrent acute pancreatitis (RAP). Hence, this study aimed to investigate the clinical features of the disease and the risk factors for RAP.

METHODS

We performed a retrospective study of 522 patients from Jan 1 to Dec 31, 2006. All patients with AP were followed for 36 months. The primary end point was the rate of RAP. The secondary end points were the risk factors that were evaluated by Cox regression analysis. The cumulative risk of RAP was assessed using Kaplan-Meier analysis.

RESULTS

56 of the 522 patients (10.7%) developed RAP. Among those RAP patients, 37 (7.1%) experienced one relapse, 10 (1.9%) experienced two relapses, and 9 (1.7%) experienced three or more relapses. Univariate analysis indicated that age (p = 0.016), male sex, etiology of AP (p = 0.001), local complications (p = 0.001) and Length of stay (LOS) (p = 0.007) were associated with RAP. Multivariate analysis with the Cox proportional hazards model showed that male sex (HR = 2.486, 95% CI, 0.169-0.960, p = 0.04), HTG-associated etiology (HR = 5.690, 95% CI, 2.138-15.146, p = 0.001), alcohol-associated etiology (HR = 5.867, 95% CI, 1.446-23.803, p = 0.013) and current local complications at index admission (HR = 8.917, 95% CI, 3.650-21.789, p = 0.001) were significant independent risk factors for RAP.

CONCLUSIONS

A first attack of AP led to RAP in 10.7% of patients within 3 years. Male sex was significantly associated with RAP. The etiologies of alcohol and HTG and local complications were the strongest risk factors for recurrent disease. Patients with these characteristics should be given special attention and followed-up closely.

Evaluation of Prognostic Factors of Severity in Acute Biliary Pancreatitis

Acute pancreatitis (AP) is an inflammatory disorder of the pancreas that, when classified as severe, is associated with high morbidity and mortality. Promptly identifying the severity of AP is of extreme importance for improving clinical outcomes. The aim of this study was to compare the prognostic value of serological biomarkers, ratios, and multifactorial scores in patients with acute biliary pancreatitis and to identify the best predictors. In this observational and prospective study, the biomarkers, ratios and multifactorial scores were evaluated on admission and at 48 h of the symptom onset. On admission, regarding the AP severity, the white blood count (WBC) and neutrophil-lymphocyte ratio (NLR), and regarding the mortality, the WBC and the modified Marshall score (MMS) showed the best predictive values. At 48 h, regarding the AP severity, the hepcidin, NLR, systemic inflammatory response index (SIRI) and MMS and regarding the mortality, the NLR, hepcidin and the bedside index for severity in AP (BISAP) score, showed the best predictive values. The present study enabled the identification, for the first time, of SIRI as a new prognostic tool for AP severity, and validated hepcidin and the NLR as better prognostic markers than C-reactive protein (CRP) at 48 h of symptom onset.

Evaluation of four scoring systems in prognostication of acute pancreatitis for elderly patients

BACKGROUND

To evaluate the ability of four scoring systems (Ranson, BISAP, Glasgow, and APACHE II) to predict outcomes of acute pancreatitis (AP) in elderly patients.

METHODS

This was a retrospective study of 918 patients presenting with AP at Zhongda Hospital Southeast University, from January 2015 to December 2018. We divided patients into two groups: 368 patients who were ≥ 60 years old, and 550 patients who were < 60 years old. Four scoring systems were used to analyze all patients.

RESULTS

The severity of the disease, and mortality were significantly different between the two groups (p < 0.05), while the difference between the two groups about pancreatic necrosis is statistically insignificant (p = 0.399). The differences of the AUCs (Area under curves) for prediction of outcome of SAP (severe acute pancreatitis) between the two groups were statistically significant for Ranson and APACHE II (p < 0.05), but not for the differences between BISAP and Glasgow. All the four scoring systems were similar in terms of prediction of pancreatic necrosis and death in both groups.

CONCLUSIONS

Prediction of severity, pancreatic necrosis, and death in AP for elderly patients can be performed very well by using BISAP. APACHE II is more suitable for younger patients when dealing with severity. Ranson and Glasgow can be used to evaluate all AP patients in most cases; however, Ranson is more effective for younger patients when used to assess severity.