β1 syntrophin supports autophagy initiation and protects against cerulein-induced acute pancreatitis.

β1 syntrophin supports autophagy initiation and protects against cerulein-induced acute pancreatitis. Am J Pathol. 2019 Jan 14;: Authors: Ye R, Onodera T, Blanchard PG, Kusminski CM, Esser V, Brekken RA, Scherer PE Abstract Syntrophins are a family of proteins forming membrane-anchored scaffolds and serving as adaptors for various transmembrane and intracellular signaling molecules. To understand the physiological roles of β1 syntrophin, one of the least characterized members, we generated mouse models to eliminate β1 syntrophin specifically in the endocrine or exocrine pancreas. β1 syntrophin is dispensable for the morphology and function of insulin-producing β-cells. However, mice with β1 syntrophin deletion in exocrine acinar cells exhibit increased severity of cerulein-induced acute pancreatitis. Reduced expression of cystic fibrosis transmembrane conductance regulator and dilation of acinar lumen are potential predisposition factors. During the disease progression, a relative lack of autophagy is associated with deficiencies in both actin assembly and endoplasmic reticulum nucleation. Our findings reveal for the first time that β1 syntrophin is a critical regulator of actin cytoskeleton and autophagy in pancreatic acinar cells, and is potently protective against cerulein-induced acute pancreatitis. PMID: 30653956 [PubMed - as supplied by publisher]
Source: The American Journal of Pathology - Category: Pathology Authors: Tags: Am J Pathol Source Type: research

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Pancreatic exocrine insufficiency occurs when there is insufficient production or delivery of pancreatic enzymes required for the digestion and absorption of food. It is associated with relatively poor outcomes, including reduced quality of life and survival.1 Common causes are cancer of the head/body of the pancreas, chronic pancreatitis, pancreatic resection and cystic fibrosis. It can occur following duodenectomy, gastrectomy or untreated coeliac disease via a reduction in cholecystokinin and thereby post-prandial pancreatic stimulation.
Source: Journal of Pain and Symptom Management - Category: Palliative Care Authors: Source Type: research
Authors: Brennan GT, Saif MW Abstract Pancreatic enzyme replacement therapy is safe and effective at treating pancreatic exocrine insufficiency. There are multiple causes of pancreatic exocrine insufficiency including chronic pancreatitis, cystic fibrosis and pancreatic cancer. Testing fecal elastase-1 level is useful for the diagnosis of pancreatic exocrine insufficiency. Starting doses of pancreatic enzyme replacement therapy should be at least 30-40,000 IU with each meal and 15-20,000 IU with snacks. pancreatic enzyme replacement therapy should be taken in divided doses throughout meals. Patients who do not resp...
Source: Journal of the Pancreas - Category: Gastroenterology Tags: JOP Source Type: research
Semin Respir Crit Care Med DOI: 10.1055/s-0039-1697961The diagnosis of cystic fibrosis (CF) has traditionally relied on the presence of clinical features of the disease. Today, diagnosis through newborn screening (NBS) is becoming the standard of modern CF care. CF NBS programs can identify CF prior to clinical presentation, but for the advantages of an early diagnosis to accrue a scrupulous system must be in place to ensure all steps in the program are performing. As we move rapidly into the era of CF transmembrane conductance regulator (CFTR) protein modulators, the opportunity to start a presymptomatic infant, identifie...
Source: Seminars in Respiratory and Critical Care Medicine - Category: Respiratory Medicine Authors: Tags: Review Article Source Type: research
Abstract The diagnosis of cystic fibrosis (CF) has traditionally relied on the presence of clinical features of the disease. Today, diagnosis through newborn screening (NBS) is becoming the standard of modern CF care. CF NBS programs can identify CF prior to clinical presentation, but for the advantages of an early diagnosis to accrue a scrupulous system must be in place to ensure all steps in the program are performing. As we move rapidly into the era of CF transmembrane conductance regulator (CFTR) protein modulators, the opportunity to start a presymptomatic infant, identified through CF NBS, on these agents of...
Source: Respiratory Care - Category: Respiratory Medicine Authors: Tags: Semin Respir Crit Care Med Source Type: research
We present a case of a 4  year old female with pancreatic-sufficient CF, refractory ARP, frequent hospital admissions for abdominal pain, and continued growth failure despite gastrostomy tube and parenteral nutrition.
Source: Journal of Cystic Fibrosis - Category: Respiratory Medicine Authors: Source Type: research
Conclusions Cystic fibrosis or CFTR-RD can present as ARP/CP. Complete diagnostic testing for CFTR-RD in patients with ARP/CP will broaden treatment options and help to identify comorbid illness.
Source: Pancreas - Category: Gastroenterology Tags: Original Articles Source Type: research
Cystic fibrosis (CF) is a genetic disorder of the epithelial CFTR apical chloride channel resulting in multi-organ manifestations, including pancreatic exocrine secretion. In the pancreas, CFTR abnormality res...
Source: BMC Gastroenterology - Category: Gastroenterology Authors: Tags: Case report Source Type: research
The objective of this study was to analyze the current evidence for the use of pancreatic enzyme replacement therapy (PERT) in affecting survival and quality of life in patients with pancreatic exocrine insufficiency (PEI). Systematic searches of the literature were performed using the PubMed database. Articles were selected for inclusion if they reported findings from trials assessing the effects of PERT on quality of life, survival, malabsorption, growth parameters (such as height, body weight and body mass index), or gastrointestinal symptoms (such as abdominal pain, stool consistency and flatulence). PERT improved PEI-...
Source: World Journal of Gastroenterology : WJG - Category: Gastroenterology Authors: Tags: World J Gastroenterol Source Type: research
Conclusions This review describes how leukocyte-heparanase can be a double-edged sword in tumor progression; it can enhance tumor immune surveillance and tumor cell clearance, but also promote tumor survival and growth. We also discuss the potential of using heparanase in leukocyte therapies against tumors, and the effects of heparanase inhibitors on tumor progression and immunity. We are just beginning to understand the influence of heparanase on a pro/anti-tumor immune response, and there are still many questions to answer. How do the pro/anti-tumorigenic effects of heparanase differ across different cancer types? Does...
Source: Frontiers in Oncology - Category: Cancer & Oncology Source Type: research
r A Abstract The heterogenous catagory "specific types of diabetes due to other causes" encompasses disturbances in glucose metabolism due to other endocrine disorders such as acromegaly or hypercortisolism, drug-induced diabetes (e. g. antipsychotic medications, glucocorticoids, immunosuppressive agents, highly active antiretroviral therapy (HAART)), genetic forms of diabetes (e. g. Maturity Onset Diabetes of the Young (MODY), neonatal diabetes, Down Syndrome, Klinefelter Syndrome, Turner Syndrome), pancreatogenic diabetes (e. g. postoperatively, pancreatitis, pancreatic cancer, haemochromatosis, ...
Source: Wiener Klinische Wochenschrift - Category: General Medicine Authors: Tags: Wien Klin Wochenschr Source Type: research
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