1
|
Ando R, Shiraki Y, Miyai Y, Shimizu H, Furuhashi K, Minatoguchi S, Kato K, Kato A, Iida T, Mizutani Y, Ito K, Asai N, Mii S, Esaki N, Takahashi M, Enomoto A. Meflin is a marker of pancreatic stellate cells involved in fibrosis and epithelial regeneration in the pancreas. J Pathol 2024; 262:61-75. [PMID: 37796386 DOI: 10.1002/path.6211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 07/18/2023] [Accepted: 08/25/2023] [Indexed: 10/06/2023]
Abstract
Pancreatic stellate cells (PSCs) are stromal cells in the pancreas that play an important role in pancreatic pathology. In chronic pancreatitis (CP) and pancreatic ductal adenocarcinoma (PDAC), PSCs are known to get activated to form myofibroblasts or cancer-associated fibroblasts (CAFs) that promote stromal fibroinflammatory reactions. However, previous studies on PSCs were mainly based on the findings obtained using ex vivo expanded PSCs, with few studies that addressed the significance of in situ tissue-resident PSCs using animal models. Their contributions to fibrotic reactions in CP and PDAC are also lesser-known. These limitations in our understanding of PSC biology have been attributed to the lack of specific molecular markers of PSCs. Herein, we established Meflin (Islr), a glycosylphosphatidylinositol-anchored membrane protein, as a PSC-specific marker in both mouse and human by using human pancreatic tissue samples and Meflin reporter mice. Meflin-positive (Meflin+ ) cells contain lipid droplets and express the conventional PSC marker Desmin in normal mouse pancreas, with some cells also positive for Gli1, the marker of pancreatic tissue-resident fibroblasts. Three-dimensional analysis of the cleared pancreas of Meflin reporter mice showed that Meflin+ PSCs have long and thin cytoplasmic protrusions, and are localised on the abluminal side of vessels in the normal pancreas. Lineage tracing experiments revealed that Meflin+ PSCs constitute one of the origins of fibroblasts and CAFs in CP and PDAC, respectively. In these diseases, Meflin+ PSC-derived fibroblasts showed a distinctive morphology and distribution from Meflin+ PSCs in the normal pancreas. Furthermore, we showed that the genetic depletion of Meflin+ PSCs accelerated fibrosis and attenuated epithelial regeneration and stromal R-spondin 3 expression, thereby implying that Meflin+ PSCs and their lineage cells may support tissue recovery and Wnt/R-spondin signalling after pancreatic injury and PDAC development. Together, these data indicate that Meflin may be a marker specific to tissue-resident PSCs and useful for studying their biology in both health and disease. © 2023 The Pathological Society of Great Britain and Ireland.
Collapse
Affiliation(s)
- Ryota Ando
- Department of Pathology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yukihiro Shiraki
- Department of Pathology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yuki Miyai
- Department of Pathology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Hiroki Shimizu
- Department of Pathology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kazuhiro Furuhashi
- Department of Nephrology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Shun Minatoguchi
- Department of Nephrology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Katsuhiro Kato
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Akira Kato
- Department of Pathology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Tadashi Iida
- Department of Pathology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yasuyuki Mizutani
- Department of Pathology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kisuke Ito
- Department of Pathology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Naoya Asai
- Department of Molecular Pathology, Fujita Health University, Toyoake, Japan
| | - Shinji Mii
- Department of Pathology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Nobutoshi Esaki
- Department of Pathology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Masahide Takahashi
- Division of International Center for Cell and Gene Therapy, Fujita Health University, Toyoake, Japan
| | - Atsushi Enomoto
- Department of Pathology, Nagoya University Graduate School of Medicine, Nagoya, Japan
- Center for One Medicine Innovative Translational Research, Gifu University Institute for Advanced Study, Gifu, Japan
| |
Collapse
|
2
|
Lilly AC, Astsaturov I, Golemis EA. Intrapancreatic fat, pancreatitis, and pancreatic cancer. Cell Mol Life Sci 2023; 80:206. [PMID: 37452870 PMCID: PMC10349727 DOI: 10.1007/s00018-023-04855-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 06/29/2023] [Accepted: 07/03/2023] [Indexed: 07/18/2023]
Abstract
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.
Collapse
Affiliation(s)
- Anna C Lilly
- Program in Cancer Signaling and Microenvironment, Fox Chase Cancer Center, 333 Cottman Ave., Philadelphia, PA, 19111, USA
- Molecular & Cell Biology & Genetics (MCBG) Program, Drexel University College of Medicine, Philadelphia, PA, 19102, USA
| | - Igor Astsaturov
- Program in Cancer Signaling and Microenvironment, Fox Chase Cancer Center, 333 Cottman Ave., Philadelphia, PA, 19111, USA
- The Marvin & Concetta Greenberg Pancreatic Cancer Institute, Fox Chase Cancer Center, Philadelphia, PA, 19111, USA
| | - Erica A Golemis
- Program in Cancer Signaling and Microenvironment, Fox Chase Cancer Center, 333 Cottman Ave., Philadelphia, PA, 19111, USA.
- Department of Cancer and Cellular Biology, Lewis Katz School of Medicine, Philadelphia, PA, 19140, USA.
| |
Collapse
|
3
|
Rugivarodom M, Geeratragool T, Pausawasdi N, Charatcharoenwitthaya P. Fatty Pancreas: Linking Pancreas Pathophysiology to Nonalcoholic Fatty Liver Disease. J Clin Transl Hepatol 2022; 10:1229-1239. [PMID: 36381092 PMCID: PMC9634764 DOI: 10.14218/jcth.2022.00085] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 06/05/2022] [Accepted: 06/27/2022] [Indexed: 12/04/2022] Open
Abstract
Currently, scientific interest has focused on fat accumulation outside of subcutaneous adipose tissue. As various imaging modalities are available to quantify fat accumulation in particular organs, fatty pancreas has become an important area of research over the last decade. The pancreas has an essential role in regulating glucose metabolism and insulin secretion by responding to changes in nutrients under various metabolic circumstances. Mounting evidence has revealed that fatty pancreas is linked to impaired β-cell function and affects insulin secretion with metabolic consequences of impaired glucose metabolism, type 2 diabetes, and metabolic syndrome. It has been shown that there is a connection between fatty pancreas and the presence and severity of nonalcoholic fatty liver disease (NAFLD), which has become the predominant cause of chronic liver disease worldwide. Therefore, it is necessary to better understand the pathogenic mechanisms of fat accumulation in the pancreas and its relationship with NAFLD. This review summarizes the epidemiology, diagnosis, risk factors, and metabolic consequences of fatty pancreas and discusses its pathophysiology links to NAFLD.
Collapse
Affiliation(s)
| | | | | | - Phunchai Charatcharoenwitthaya
- Correspondence to: Phunchai Charatcharoenwitthaya, Division of Gastroenterology, Medicine Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Wang-Lang Road, Bangkok 10700, Thailand. ORCID: https://orcid.org/0000-0002-8334-0267. Tel: +66-2-4197282, Fax: +66-2-4115013, E-mail:
| |
Collapse
|
4
|
Ng B, Viswanathan S, Widjaja AA, Lim WW, Shekeran SG, Goh JWT, Tan J, Kuthubudeen F, Lim SY, Xie C, Schafer S, Adami E, Cook SA. IL11 Activates Pancreatic Stellate Cells and Causes Pancreatic Inflammation, Fibrosis and Atrophy in a Mouse Model of Pancreatitis. Int J Mol Sci 2022; 23:ijms23073549. [PMID: 35408908 PMCID: PMC8999048 DOI: 10.3390/ijms23073549] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 03/14/2022] [Accepted: 03/22/2022] [Indexed: 02/06/2023] Open
Abstract
Interleukin-11 (IL11) is important for fibrosis and inflammation, but its role in the pancreas is unclear. In pancreatitis, fibrosis, inflammation and organ dysfunction are associated with pancreatic stellate cell (PSC)-to-myofibroblast transformation. Here, we show that IL11 stimulation of PSCs, which specifically express IL11RA in the pancreas, results in transient STAT3 phosphorylation, sustained ERK activation and PSC activation. In contrast, IL6 stimulation of PSCs caused sustained STAT3 phosphorylation but did not result in ERK activation or PSC transformation. Pancreatitis factors, including TGFβ, CTGF and PDGF, induced IL11 secretion from PSCs and a neutralising IL11RA antibody prevented PSC activation by these stimuli. This revealed an important ERK-dependent role for autocrine IL11 activity in PSCs. In mice, IL11 was increased in the pancreas after pancreatic duct ligation, and in humans, IL11 and IL11RA levels were elevated in chronic pancreatitis. Following pancreatic duct ligation, administration of anti-IL11RA to mice reduced pathologic (ERK, STAT, NF-κB) signalling, pancreatic atrophy, fibrosis and pro-inflammatory cytokine (TNFα, IL6 and IL1β) levels. This is the first description of IL11-mediated activation of PSCs, and the data suggest IL11 as a stromal therapeutic target in pancreatitis.
Collapse
Affiliation(s)
- Benjamin Ng
- National Heart Research Institute Singapore, National Heart Centre Singapore, Singapore 169609, Singapore; (W.-W.L.); (J.T.); (C.X.); (S.A.C.)
- Cardiovascular and Metabolic Disorders Program, Duke-National University of Singapore Medical School, Singapore 169857, Singapore; (S.V.); (A.A.W.); (S.G.S.); (J.W.T.G.); (F.K.); (S.Y.L.); (S.S.)
- Correspondence: (B.N.); (E.A.)
| | - Sivakumar Viswanathan
- Cardiovascular and Metabolic Disorders Program, Duke-National University of Singapore Medical School, Singapore 169857, Singapore; (S.V.); (A.A.W.); (S.G.S.); (J.W.T.G.); (F.K.); (S.Y.L.); (S.S.)
| | - Anissa A. Widjaja
- Cardiovascular and Metabolic Disorders Program, Duke-National University of Singapore Medical School, Singapore 169857, Singapore; (S.V.); (A.A.W.); (S.G.S.); (J.W.T.G.); (F.K.); (S.Y.L.); (S.S.)
| | - Wei-Wen Lim
- National Heart Research Institute Singapore, National Heart Centre Singapore, Singapore 169609, Singapore; (W.-W.L.); (J.T.); (C.X.); (S.A.C.)
- Cardiovascular and Metabolic Disorders Program, Duke-National University of Singapore Medical School, Singapore 169857, Singapore; (S.V.); (A.A.W.); (S.G.S.); (J.W.T.G.); (F.K.); (S.Y.L.); (S.S.)
| | - Shamini G. Shekeran
- Cardiovascular and Metabolic Disorders Program, Duke-National University of Singapore Medical School, Singapore 169857, Singapore; (S.V.); (A.A.W.); (S.G.S.); (J.W.T.G.); (F.K.); (S.Y.L.); (S.S.)
| | - Joyce Wei Ting Goh
- Cardiovascular and Metabolic Disorders Program, Duke-National University of Singapore Medical School, Singapore 169857, Singapore; (S.V.); (A.A.W.); (S.G.S.); (J.W.T.G.); (F.K.); (S.Y.L.); (S.S.)
| | - Jessie Tan
- National Heart Research Institute Singapore, National Heart Centre Singapore, Singapore 169609, Singapore; (W.-W.L.); (J.T.); (C.X.); (S.A.C.)
| | - Fathima Kuthubudeen
- Cardiovascular and Metabolic Disorders Program, Duke-National University of Singapore Medical School, Singapore 169857, Singapore; (S.V.); (A.A.W.); (S.G.S.); (J.W.T.G.); (F.K.); (S.Y.L.); (S.S.)
| | - Sze Yun Lim
- Cardiovascular and Metabolic Disorders Program, Duke-National University of Singapore Medical School, Singapore 169857, Singapore; (S.V.); (A.A.W.); (S.G.S.); (J.W.T.G.); (F.K.); (S.Y.L.); (S.S.)
| | - Chen Xie
- National Heart Research Institute Singapore, National Heart Centre Singapore, Singapore 169609, Singapore; (W.-W.L.); (J.T.); (C.X.); (S.A.C.)
| | - Sebastian Schafer
- Cardiovascular and Metabolic Disorders Program, Duke-National University of Singapore Medical School, Singapore 169857, Singapore; (S.V.); (A.A.W.); (S.G.S.); (J.W.T.G.); (F.K.); (S.Y.L.); (S.S.)
| | - Eleonora Adami
- Cardiovascular and Metabolic Disorders Program, Duke-National University of Singapore Medical School, Singapore 169857, Singapore; (S.V.); (A.A.W.); (S.G.S.); (J.W.T.G.); (F.K.); (S.Y.L.); (S.S.)
- Cardiovascular and Metabolic Sciences, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), 13125 Berlin, Germany
- Correspondence: (B.N.); (E.A.)
| | - Stuart A. Cook
- National Heart Research Institute Singapore, National Heart Centre Singapore, Singapore 169609, Singapore; (W.-W.L.); (J.T.); (C.X.); (S.A.C.)
- Cardiovascular and Metabolic Disorders Program, Duke-National University of Singapore Medical School, Singapore 169857, Singapore; (S.V.); (A.A.W.); (S.G.S.); (J.W.T.G.); (F.K.); (S.Y.L.); (S.S.)
- MRC-London Institute of Medical Sciences, Hammersmith Hospital Campus, London W12 0NN, UK
| |
Collapse
|
5
|
Petrov MS, Taylor R. Intra-pancreatic fat deposition: bringing hidden fat to the fore. Nat Rev Gastroenterol Hepatol 2022; 19:153-168. [PMID: 34880411 DOI: 10.1038/s41575-021-00551-0] [Citation(s) in RCA: 70] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/04/2021] [Indexed: 02/07/2023]
Abstract
Development of advanced modalities for detection of fat within the pancreas has transformed understanding of the role of intra-pancreatic fat deposition (IPFD) in health and disease. There is now strong evidence for the presence of minimal (but not negligible) IPFD in healthy human pancreas. Diffuse excess IPFD, or fatty pancreas disease (FPD), is more frequent than type 2 diabetes mellitus (T2DM) (the most common disease of the endocrine pancreas) and acute pancreatitis (the most common disease of the exocrine pancreas) combined. FPD is not strictly a function of high BMI; it can result from the excess deposition of fat in the islets of Langerhans, acinar cells, inter-lobular stroma, acinar-to-adipocyte trans-differentiation or replacement of apoptotic acinar cells. This process leads to a wide array of diseases characterized by excess IPFD, including but not limited to acute pancreatitis, chronic pancreatitis, pancreatic cancer, T2DM, diabetes of the exocrine pancreas. There is ample evidence for FPD being potentially reversible. Weight loss-induced decrease of intra-pancreatic fat is tightly associated with remission of T2DM and its re-deposition with recurrence of the disease. Reversing FPD will open up opportunities for preventing or intercepting progression of major diseases of the exocrine pancreas in the future.
Collapse
Affiliation(s)
- Maxim S Petrov
- School of Medicine, University of Auckland, Auckland, New Zealand.
| | - Roy Taylor
- Magnetic Resonance Centre, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| |
Collapse
|
6
|
Hoogenboom SA, Bolan CW, Chuprin A, Raimondo MT, van Hooft JE, Wallace MB, Raimondo M. Pancreatic steatosis on computed tomography is an early imaging feature of pre-diagnostic pancreatic cancer: A preliminary study in overweight patients. Pancreatology 2021; 21:428-433. [PMID: 33485792 DOI: 10.1016/j.pan.2021.01.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 12/07/2020] [Accepted: 01/07/2021] [Indexed: 12/11/2022]
Abstract
BACKGROUND The prevalence of pancreatic ductal adenocarcinoma (PDAC) is on the rise, driven by factors such as aging and an increasing prevalence of obesity and diabetes mellitus. To improve the poor survival rate of PDAC, early detection is vital. Recently, pancreatic steatosis has gained novel interest as a risk factor for PDAC. This study aimed to investigate if pancreatic steatosis on computed tomography (CT) is an early imaging feature in patients with pre-diagnostic PDAC. METHODS A retrospective case-control study was performed. Patients diagnosed with PDAC (2010-2016) were reviewed for abdominal non-contrast CT-imaging 1 month-3 years prior to their diagnosis. Cases were matched 1:4 with controls based on age, gender and imaging date. Unenhanced CT-images were evaluated for pancreatic steatosis (pancreas-to-spleen ratio in Hounsfield Units <0.70) by a blinded radiologist and results were compared between cases and controls. RESULTS In total, 32 cases and 117 controls were included in the study with a comparable BMI (29.6 and 29.2 respectively, p = 0.723). Pancreatic steatosis was present in 71.9% of cases compared to 45.3% of controls (Odds ratio (OR) 3.09(1.32-7.24), p = 0.009). Adjusted for BMI and diabetes mellitus, pancreatic steatosis on CT remained a significant independent risk factor for PDAC (Adjusted OR 2.70(1.14-6.58), p = 0.037). CONCLUSION Pancreatic steatosis measured on CT is independently associated with PDAC up to three years before the clinical diagnosis in overweight patients. If these data are confirmed, this novel imaging feature may be used to identify high-risk individuals and to stratify the risk of PDAC in individuals that already undergo PDAC screening.
Collapse
Affiliation(s)
- Sanne A Hoogenboom
- Department of Gastroenterology and Hepatology, Mayo Clinic Jacksonville, Florida, USA; Department of Gastroenterology and Hepatology, Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands.
| | - Candice W Bolan
- Department of Radiology, Mayo Clinic Jacksonville, Florida, USA
| | - Anthony Chuprin
- Department of Radiology, Mayo Clinic Jacksonville, Florida, USA
| | - Maria T Raimondo
- Department of Gastroenterology and Hepatology, Mayo Clinic Jacksonville, Florida, USA
| | - Jeanin E van Hooft
- Department of Gastroenterology and Hepatology, Leiden University Medical Center, Leiden, Netherlands
| | - Michael B Wallace
- Department of Gastroenterology and Hepatology, Mayo Clinic Jacksonville, Florida, USA
| | - Massimo Raimondo
- Department of Gastroenterology and Hepatology, Mayo Clinic Jacksonville, Florida, USA
| |
Collapse
|
7
|
Abstract
The pancreas of adult mammals displays a branched structure which transports digestive enzymes produced in the distal acini through a tree-like network of ducts into the duodenum. In contrast to several other branched organs, its branching patterns are not stereotypic. Moreover, the branches do not grow from dichotomic splitting of an initial stem but rather from the formation of microlumen in a mass of cells. These lumen progressively assemble into a hyperconnected network that refines into a tree by the time of birth. We review the cell remodeling events and the molecular mechanisms governing pancreas branching, as well as the role of the surrounding tissues in this process. Furthermore, we draw parallels with other branched organs such as the salivary and mammary gland.
Collapse
Affiliation(s)
- Lydie Flasse
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany.
| | - Coline Schewin
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany
| | - Anne Grapin-Botton
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany; Cluster of Excellence Physics of Life, Technische Universität Dresden, Dresden, Germany; The Novo Nordisk Foundation Center for Stem Cell Biology, Copenhagen, Denmark.
| |
Collapse
|
8
|
Pancreatic duct ligation reduces premalignant pancreatic lesions in a Kras model of pancreatic adenocarcinoma in mice. Sci Rep 2020; 10:18344. [PMID: 33110094 PMCID: PMC7591874 DOI: 10.1038/s41598-020-74947-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 09/22/2020] [Indexed: 02/07/2023] Open
Abstract
Pancreatic duct ligation (PDL) in the murine model has been described as an exocrine pancreatic atrophy-inducing procedure. However, its influence has scarcely been described on premalignant lesions. This study describes the histological changes of premalignant lesions and the gene expression in a well-defined model of pancreatic ductal adenocarcinoma by PDL. Selective ligation of the splenic lobe of the pancreas was performed in Ptf1a-Cre(+/ki); K-ras LSLG12Vgeo(+/ki) mice (PDL-Kras mice). Three experimental groups were evaluated: PDL group, controls and shams. The presence and number of premalignant lesions (PanIN 1–3 and Atypical Flat Lesions—AFL) in proximal (PP) and distal (DP) pancreas were studied for each group over time. Microarray analysis was performed to find differentially expressed genes (DEG) between PP and PD. Clinical human specimens after pancreaticoduodenectomy with ductal occlusion were also evaluated. PDL-Kras mice showed an intense pattern of atrophy in DP which was shrunk to a minimal portion of tissue. Mice in control and sham groups had a 7 and 10-time increase respectively of risk of high-grade PanIN 2 and 3 and AFL in their DP than PDL-Kras mice. Furthermore, PDL-Kras mice had significantly less PanIN 1 and 2 and AFL lesions in DP compared to PP. We identified 38 DEGs comparing PP and PD. Among them, several mapped to protein secretion and digestion while others such as Nupr1 have been previously associated with PanIN and PDAC. PDL in Ptf1a-Cre(+/ki); K-ras LSLG12Vgeo(+/ki) mice induces a decrease in the presence of premalignant lesions in the ligated DP. This could be a potential line of research of interest in some cancerous risk patients.
Collapse
|
9
|
Muresan C, Beteg FI, Lelescu CA, Amorim IF, Rema A, Taulescu MA. Extensive Fatty Replacement of the Pancreas (Pancreatic Lipomatosis) in a Dog. J Comp Pathol 2019; 173:19-23. [PMID: 31812169 DOI: 10.1016/j.jcpa.2019.09.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 09/12/2019] [Accepted: 09/20/2019] [Indexed: 11/18/2022]
Abstract
A 12-year-old neutered female mixed-breed dog was referred for occasional vomiting that had increased progressively in frequency over the past 3 months. Palpation of the abdomen revealed a firm mass of unknown aetiology, located within the cranial to mid abdomen, while abdominal surgical exploration revealed a well-defined abdominal mass of pancreatic origin. The pancreatic mass caused lateral displacement of the duodenum as well as medial displacement of the pylorus, resulting in impairment of pyloric outflow. Further examination revealed a firm, poorly vascularized and coarsely lobulated structure. The histopathological findings were consistent with severe pancreatic lipomatosis and atrophy. Immunohistochemically, the remnant pancreatic cells were positive for cytokeratins AE1/AE3 and glucagon, and negative for insulin. Routine follow-up with the referring veterinarian showed no evidence of postoperative complications, but the dog continued to deteriorate further and died despite medical management. Pancreatic lipomatosis is a rare condition in small animal practice. The aetiology or predisposing factors have not been identified in animals.
Collapse
Affiliation(s)
- C Muresan
- Department of Surgery, University of Agricultural Sciences and Veterinary Medicine, Faculty of Veterinary Medicine, Cluj-Napoca, Romania
| | - F I Beteg
- Department of Surgery, University of Agricultural Sciences and Veterinary Medicine, Faculty of Veterinary Medicine, Cluj-Napoca, Romania
| | - C A Lelescu
- Department of Surgery, University of Agricultural Sciences and Veterinary Medicine, Faculty of Veterinary Medicine, Cluj-Napoca, Romania
| | - I F Amorim
- Department of Pathology and Molecular Immunology, Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Porto, Portugal
| | - A Rema
- Department of Pathology and Molecular Immunology, Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Porto, Portugal
| | - M A Taulescu
- Department of Pathology, University of Agricultural Sciences and Veterinary Medicine, Faculty of Veterinary Medicine, Cluj-Napoca, Romania.
| |
Collapse
|
10
|
Saloman JL, Albers KM, Cruz-Monserrate Z, Davis BM, Edderkaoui M, Eibl G, Epouhe AY, Gedeon JY, Gorelick FS, Grippo PJ, Groblewski GE, Husain SZ, Lai KK, Pandol SJ, Uc A, Wen L, Whitcomb DC. Animal Models: Challenges and Opportunities to Determine Optimal Experimental Models of Pancreatitis and Pancreatic Cancer. Pancreas 2019; 48:759-779. [PMID: 31206467 PMCID: PMC6581211 DOI: 10.1097/mpa.0000000000001335] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
At the 2018 PancreasFest meeting, experts participating in basic research met to discuss the plethora of available animal models for studying exocrine pancreatic disease. In particular, the discussion focused on the challenges currently facing the field and potential solutions. That meeting culminated in this review, which describes the advantages and limitations of both common and infrequently used models of exocrine pancreatic disease, namely, pancreatitis and exocrine pancreatic cancer. The objective is to provide a comprehensive description of the available models but also to provide investigators with guidance in the application of these models to investigate both environmental and genetic contributions to exocrine pancreatic disease. The content covers both nongenic and genetically engineered models across multiple species (large and small). Recommendations for choosing the appropriate model as well as how to conduct and present results are provided.
Collapse
Affiliation(s)
- Jami L. Saloman
- Department of Neurobiology, Pittsburgh Center for Pain Research, University of Pittsburgh, Pittsburgh, PA
| | - Kathryn M. Albers
- Department of Neurobiology, Pittsburgh Center for Pain Research, University of Pittsburgh, Pittsburgh, PA
| | - Zobeida Cruz-Monserrate
- Division of Gastroenterology, Hepatology, and Nutrition; Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH
| | - Brian M. Davis
- Department of Neurobiology, Pittsburgh Center for Pain Research, University of Pittsburgh, Pittsburgh, PA
| | - Mouad Edderkaoui
- Basic and Translational Pancreas Research, Cedars-Sinai Medical Center, Los Angeles, CA
| | - Guido Eibl
- Department of Surgery, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, CA
| | - Ariel Y. Epouhe
- Department of Neurobiology, Pittsburgh Center for Pain Research, University of Pittsburgh, Pittsburgh, PA
| | - Jeremy Y. Gedeon
- Department of Neurobiology, Pittsburgh Center for Pain Research, University of Pittsburgh, Pittsburgh, PA
| | - Fred S. Gorelick
- Department of Internal Medicine, Section of Digestive Diseases & Department of Cell Biology Yale University School of Medicine; Veterans Affairs Connecticut Healthcare, West Haven, CT
| | - Paul J. Grippo
- Department of Medicine, Division of Gastroenterology and Hepatology, UI Cancer Center, University of Illinois at Chicago, Chicago, IL
| | - Guy E. Groblewski
- Department of Nutritional Sciences, University of Wisconsin, Madison, WI
| | | | - Keane K.Y. Lai
- Department of Pathology (National Medical Center), Department of Molecular Medicine (Beckman Research Institute), and Comprehensive Cancer Center, City of Hope, Duarte, CA
| | - Stephen J. Pandol
- Department of Surgery, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, CA
| | - Aliye Uc
- Stead Family Department of Pediatrics, University of Iowa, Stead Family Children’s Hospital, Iowa City, IA
| | - Li Wen
- Department of Pediatrics, Stanford University, Palo Alto, CA
| | | |
Collapse
|
11
|
Cheng T, Zhang Z, Jian Z, Raulefs S, Schlitter AM, Steiger K, Maeritz N, Zhao Y, Shen S, Zou X, Ceyhan GO, Friess H, Kleeff J, Michalski CW, Kong B. Ductal obstruction promotes formation of preneoplastic lesions from the pancreatic ductal compartment. Int J Cancer 2019; 144:2529-2538. [PMID: 30412288 DOI: 10.1002/ijc.31981] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Revised: 09/25/2018] [Accepted: 10/31/2018] [Indexed: 01/26/2023]
Abstract
Pancreatitis is a significant risk factor for pancreatic ductal adenocarcinoma (PDAC). Previous studies in mice have demonstrated that pancreatitis contributes to oncogenic Kras-driven carcinogenesis, probably initiated in acinar cells; however, oncogenic Kras alone or in combination with caerulein-induced pancreatitis is not sufficient in initiating PDAC from the ductal compartment. We thus introduced ductal obstruction - which induces a more severe form of pancreatitis - by pancreatic ductal ligation in mice harbouring oncogenic Kras. This induced a particular phenotype with highly proliferative nonmucinous cells with nuclear atypia. Around these lesions, there was a significant proliferation of activated fibroblasts and infiltration of immune cells, corroborating the pathological features of preneoplastic lesions. Lineage-tracing experiments revealed that these preneoplastic cells derived from two distinctive cellular sources: acinar and ductal cells. Phenotypic characterisation revealed that the duct-derived preneoplastic lesions show a high proliferative potential with persistent activation of tumour-promoting inflammatory pathways while the acinar-derived ones were less proliferative with persistent p53 activation. Furthermore, the duct-derived preneoplastic cells have a particularly high nuclear-to-cytoplasmic ratio. These data demonstrate that ductal obstruction promotes preneoplastic lesion formation from the pancreatic ductal compartment.
Collapse
Affiliation(s)
- Tao Cheng
- Department of Surgery, Klinikum rechts der Isar, School of Medicine, Technical University of Munich (TUM), Munich, Germany
| | - Zhiheng Zhang
- Department of Surgery, Klinikum rechts der Isar, School of Medicine, Technical University of Munich (TUM), Munich, Germany
| | - Ziying Jian
- Department of Surgery, Klinikum rechts der Isar, School of Medicine, Technical University of Munich (TUM), Munich, Germany
| | - Susanne Raulefs
- Department of Surgery, Klinikum rechts der Isar, School of Medicine, Technical University of Munich (TUM), Munich, Germany
| | - Anna Melissa Schlitter
- Institute of Pathology, TUM, Munich, Germany
- German Cancer Consortium (DKTK) at the partner site Munich, Munich, Germany
| | | | - Nadja Maeritz
- Department of Surgery, Klinikum rechts der Isar, School of Medicine, Technical University of Munich (TUM), Munich, Germany
| | - Yamin Zhao
- Department of Surgery, Klinikum rechts der Isar, School of Medicine, Technical University of Munich (TUM), Munich, Germany
| | - Shanshan Shen
- Department of Gastroenterology, the Affiliated Drum Tower Hospital of Nanjing University, Medical School, Nanjing, China
| | - Xiaoping Zou
- Department of Gastroenterology, the Affiliated Drum Tower Hospital of Nanjing University, Medical School, Nanjing, China
| | - Güralp O Ceyhan
- Department of Surgery, Klinikum rechts der Isar, School of Medicine, Technical University of Munich (TUM), Munich, Germany
| | - Helmut Friess
- Department of Surgery, Klinikum rechts der Isar, School of Medicine, Technical University of Munich (TUM), Munich, Germany
| | - Jörg Kleeff
- Department of Visceral, Vascular and Endocrine Surgery, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Christoph W Michalski
- Department of Visceral, Vascular and Endocrine Surgery, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Bo Kong
- Department of Surgery, Klinikum rechts der Isar, School of Medicine, Technical University of Munich (TUM), Munich, Germany
- German Cancer Consortium (DKTK) at the partner site Munich, Munich, Germany
- Department of Gastroenterology, the Affiliated Drum Tower Hospital of Nanjing University, Medical School, Nanjing, China
| |
Collapse
|
12
|
Jansson L, Carlsson PO. Pancreatic Blood Flow with Special Emphasis on Blood Perfusion of the Islets of Langerhans. Compr Physiol 2019; 9:799-837. [PMID: 30892693 DOI: 10.1002/cphy.c160050] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The pancreatic islets are more richly vascularized than the exocrine pancreas, and possess a 5- to 10-fold higher basal and stimulated blood flow, which is separately regulated. This is reflected in the vascular anatomy of the pancreas where islets have separate arterioles. There is also an insulo-acinar portal system, where numerous venules connect each islet to the acinar capillaries. Both islets and acini possess strong metabolic regulation of their blood perfusion. Of particular importance, especially in the islets, is adenosine and ATP/ADP. Basal and stimulated blood flow is modified by local endothelial mediators, the nervous system as well as gastrointestinal hormones. Normally the responses to the nervous system, especially the parasympathetic and sympathetic nerves, are fairly similar in endocrine and exocrine parts. The islets seem to be more sensitive to the effects of endothelial mediators, especially nitric oxide, which is a permissive factor to maintain the high basal islet blood flow. The gastrointestinal hormones with pancreatic effects mainly influence the exocrine pancreatic blood flow, whereas islets are less affected. A notable exception is incretin hormones and adipokines, which preferentially affect islet vasculature. Islet hormones can influence both exocrine and endocrine blood vessels, and these complex effects are discussed. Secondary changes in pancreatic and islet blood flow occur during several conditions. To what extent changes in blood perfusion may affect the pathogenesis of pancreatic diseases is discussed. Both type 2 diabetes mellitus and acute pancreatitis are conditions where we think there is evidence that blood flow may contribute to disease manifestations. © 2019 American Physiological Society. Compr Physiol 9:799-837, 2019.
Collapse
Affiliation(s)
- Leif Jansson
- Uppsala University, Department of Medical Cell Biology, Uppsala, Sweden
| | - Per-Ola Carlsson
- Uppsala University, Department of Medical Cell Biology, Uppsala, Sweden.,Uppsala University, Department of Medical Sciences, Uppsala, Sweden
| |
Collapse
|
13
|
Yagnik V, Patel A. Evaluation of risk factors for postoperative pancreatic fistula following pancreaticoduodenectomy. FORMOSAN JOURNAL OF SURGERY 2019. [DOI: 10.4103/fjs.fjs_118_18] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
|
14
|
Niu CY, Wu FX. Research status of fatty pancreas. Shijie Huaren Xiaohua Zazhi 2018; 26:1280-1288. [DOI: 10.11569/wcjd.v26.i21.1280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Fatty pancreas is a newly proposed condition which is characterized by fat deposition and steatosis in the pancreas followed by outcome of pancreatic and metabolic complications. It has been found to be correlated with many metabolic disorders and a variety of diseases. Fatty pancreas has been associated with obesity, non-alcoholic fatty liver disease, metabolic syndrome, type 2 diabetes mellitus, acute and chronic pancreatitis, and even pancreatic carcinoma. Therefore, fatty pancreas might not only be an early marker of glucose or lipid metabolism disorders or metabolic syndrome, but also be a predictor of poor outcome of pancreatic related diseases. At present, imaging examination is the main diagnostic method. However, there is currently still a lack of a unified terminology, diagnostic criteria, treatment consensus, and guidelines due to very limited knowledge on this condition. Here we discuss the pathophysiology, pathogenesis, clinical implications, diagnosis, and treatment of fatty pancreas, with an aim to improve the early intervention, treatment, and prognosis prediction of fatty pancreas related metabolic disorders.
Collapse
Affiliation(s)
- Chun-Yan Niu
- Department of Gastroenterology, Xiang'an Hospital of Xiamen University, Xiamen 361101, Fujian Province, China,Department of Gastroenterology, the First Affiliated Hospital of Xi'an Medical University, Xi'an 710077, Shaanxi Province, China
| | - Fang-Xiong Wu
- Department of Gastroenterology, the First Affiliated Hospital of Xi'an Medical University, Xi'an 710077, Shaanxi Province, China
| |
Collapse
|
15
|
Leehan KM, Pezant NP, Rasmussen A, Grundahl K, Moore JS, Radfar L, Lewis DM, Stone DU, Lessard CJ, Rhodus NL, Segal BM, Kaufman CE, Scofield RH, Sivils KL, Montgomery C, Farris AD. Fatty infiltration of the minor salivary glands is a selective feature of aging but not Sjögren's syndrome. Autoimmunity 2017; 50:451-457. [PMID: 28988489 DOI: 10.1080/08916934.2017.1385776] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
OBJECTIVE Determine the presence and assess the extent of fatty infiltration of the minor salivary glands (SG) of primary SS patients (pSS) as compared to those with non-SS sicca (nSS). METHODS Minor SG biopsy samples from 134 subjects with pSS (n = 72) or nSS (n = 62) were imaged. Total area and fatty replacement area for each glandular cross-section (n = 4-6 cross-sections per subject) were measured using Image J (National Institutes of Health, Bethesda, MD). The observer was blinded to subject classification status. The average area of fatty infiltration calculated per subject was evaluated by logistic regression and general linearized models (GLM) to assess relationships between fatty infiltration and clinical exam results, extent of fibrosis and age. RESULTS The average area of fatty infiltration for subjects with pSS (median% (range) 4.97 (0.05-30.2)) was not significantly different from that of those with nSS (3.75 (0.087-41.9). Infiltration severity varied widely, and subjects with fatty replacement greater than 6% were equivalently distributed between pSS and nSS participants (χ2 p = .50). Age accounted for all apparent relationships between fatty infiltration and fibrosis or reduced saliva flow. The all-inclusive GLM for prediction of pSS versus non-SS classification including fibrosis, age, fatty replacement, and focus score was not significantly different from any desaturated model. In no iteration of the model did fatty replacement exert a significant effect on the capacity to predict pSS classification. CONCLUSIONS Fatty infiltration is an age-associated phenomenon and not a selective feature of Sjögren's syndrome. Sicca patients who do not fulfil pSS criteria have similar rates of fatty infiltration of the minor SG.
Collapse
Affiliation(s)
- Kerry M Leehan
- a Arthritis and Clinical Immunology Program , Oklahoma Medical Research Foundation (OMRF) , Oklahoma City , OK , USA.,b Department of Pathology , University of Oklahoma Health Sciences Center (OUHSC) , Oklahoma City , OK , USA
| | - Nathan P Pezant
- a Arthritis and Clinical Immunology Program , Oklahoma Medical Research Foundation (OMRF) , Oklahoma City , OK , USA
| | - Astrid Rasmussen
- a Arthritis and Clinical Immunology Program , Oklahoma Medical Research Foundation (OMRF) , Oklahoma City , OK , USA
| | - Kiely Grundahl
- a Arthritis and Clinical Immunology Program , Oklahoma Medical Research Foundation (OMRF) , Oklahoma City , OK , USA
| | - Jacen S Moore
- a Arthritis and Clinical Immunology Program , Oklahoma Medical Research Foundation (OMRF) , Oklahoma City , OK , USA
| | - Lida Radfar
- c College of Dentistry , OUHSC , Oklahoma City , OK , USA
| | - David M Lewis
- c College of Dentistry , OUHSC , Oklahoma City , OK , USA
| | - Donald U Stone
- d Department of Ophthalmology , Johns Hopkins University , Baltimore , MD , USA
| | - Christopher J Lessard
- a Arthritis and Clinical Immunology Program , Oklahoma Medical Research Foundation (OMRF) , Oklahoma City , OK , USA.,b Department of Pathology , University of Oklahoma Health Sciences Center (OUHSC) , Oklahoma City , OK , USA
| | - Nelson L Rhodus
- e Division of Oral Medicine and Diagnosis, Department of Diagnostic and Biological Sciences, School of Dentistry , University of Minnesota , Minneapolis , MN , USA
| | - Barbara M Segal
- f Division of Rheumatic and Autoimmune Diseases , University of Minnesota , Minneapolis , MN , USA
| | | | - R Hal Scofield
- a Arthritis and Clinical Immunology Program , Oklahoma Medical Research Foundation (OMRF) , Oklahoma City , OK , USA.,g Department of Medicine , OUHSC , Oklahoma City , OK , USA.,h Department of Veteran's Affairs Medical Center , Oklahoma City , OK , USA
| | - Kathy L Sivils
- a Arthritis and Clinical Immunology Program , Oklahoma Medical Research Foundation (OMRF) , Oklahoma City , OK , USA.,b Department of Pathology , University of Oklahoma Health Sciences Center (OUHSC) , Oklahoma City , OK , USA
| | - Courtney Montgomery
- a Arthritis and Clinical Immunology Program , Oklahoma Medical Research Foundation (OMRF) , Oklahoma City , OK , USA
| | - A Darise Farris
- a Arthritis and Clinical Immunology Program , Oklahoma Medical Research Foundation (OMRF) , Oklahoma City , OK , USA.,b Department of Pathology , University of Oklahoma Health Sciences Center (OUHSC) , Oklahoma City , OK , USA
| |
Collapse
|
16
|
Significance of steatosis in pancreatic transplantation. Transplant Rev (Orlando) 2017; 31:225-231. [PMID: 28855081 DOI: 10.1016/j.trre.2017.08.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2017] [Revised: 07/31/2017] [Accepted: 08/03/2017] [Indexed: 02/08/2023]
Abstract
The on-going success of whole organ pancreatic transplantation is dependent on overcoming the imbalance between demand and supply of optimal organs as well as tackling the vast comorbidity associated with the procedure. Pancreas steatosis is a common contributing factor to the problem and with obesity pandemics affecting the global population; the size and type of organs received from donors will only make steatosis more of an issue. The aim of this review is to highlight what is known about steatosis in the context of pancreas transplantation identifying potential methods to help its evaluation. Narrative review of literature from inception to June 2017, using OVID interface searching EMBASE and MEDLINE databases as well recent transplant conference data. All studies related to pancreas steatosis examined for clinical relevance with no exclusion criteria. Key ideas extracted and referenced. Pancreatic steatosis is not innocuous and is precariously regarded by transplant surgeons, however its associations with obesity, metabolic syndrome and long list of associated complications clearly show it needs more careful consideration. Radiologic and surgical advances now allow assessment of the fat content of organs, which could be used to quantify organs allowing better optimisation, but there is still much work to be done to refine the optimal method to achieve this.
Collapse
|
17
|
Catanzaro R, Cuffari B, Italia A, Marotta F. Exploring the metabolic syndrome: Nonalcoholic fatty pancreas disease. World J Gastroenterol 2016; 22:7660-7675. [PMID: 27678349 PMCID: PMC5016366 DOI: 10.3748/wjg.v22.i34.7660] [Citation(s) in RCA: 119] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2016] [Revised: 07/25/2016] [Accepted: 08/10/2016] [Indexed: 02/06/2023] Open
Abstract
After the first description of fatty pancreas in 1933, the effects of pancreatic steatosis have been poorly investigated, compared with that of the liver. However, the interest of research is increasing. Fat accumulation, associated with obesity and the metabolic syndrome (MetS), has been defined as “fatty infiltration” or “nonalcoholic fatty pancreas disease” (NAFPD). The term “fatty replacement” describes a distinct phenomenon characterized by death of acinar cells and replacement by adipose tissue. Risk factors for developing NAFPD include obesity, increasing age, male sex, hypertension, dyslipidemia, alcohol and hyperferritinemia. Increasing evidence support the role of pancreatic fat in the development of type 2 diabetes mellitus, MetS, atherosclerosis, severe acute pancreatitis and even pancreatic cancer. Evidence exists that fatty pancreas could be used as the initial indicator of “ectopic fat deposition”, which is a key element of nonalcoholic fatty liver disease and/or MetS. Moreover, in patients with fatty pancreas, pancreaticoduodenectomy is associated with an increased risk of intraoperative blood loss and post-operative pancreatic fistula.
Collapse
|
18
|
Zhan X, Wang F, Bi Y, Ji B. Animal models of gastrointestinal and liver diseases. Animal models of acute and chronic pancreatitis. Am J Physiol Gastrointest Liver Physiol 2016; 311:G343-55. [PMID: 27418683 PMCID: PMC5076005 DOI: 10.1152/ajpgi.00372.2015] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Accepted: 07/06/2016] [Indexed: 01/31/2023]
Abstract
Animal models of pancreatitis are useful for elucidating the pathogenesis of pancreatitis and developing and testing novel interventions. In this review, we aim to summarize the most commonly used animal models, overview their pathophysiology, and discuss their strengths and limitations. We will also briefly describe common animal study procedures and refer readers to more detailed protocols in the literature. Although animal models include pigs, dogs, opossums, and other animals, we will mainly focus on rodent models because of their popularity. Autoimmune pancreatitis and genetically engineered animal models will be reviewed elsewhere.
Collapse
Affiliation(s)
- Xianbao Zhan
- 1Department of Cancer Biology, Mayo Clinic, Jacksonville, Florida and
| | - Fan Wang
- 1Department of Cancer Biology, Mayo Clinic, Jacksonville, Florida and
| | - Yan Bi
- 2Department of Gastroenterology and Hepatology, Mayo Clinic, Jacksonville, Florida
| | - Baoan Ji
- Department of Cancer Biology, Mayo Clinic, Jacksonville, Florida and
| |
Collapse
|
19
|
Renner S, Dobenecker B, Blutke A, Zöls S, Wanke R, Ritzmann M, Wolf E. Comparative aspects of rodent and nonrodent animal models for mechanistic and translational diabetes research. Theriogenology 2016; 86:406-21. [PMID: 27180329 DOI: 10.1016/j.theriogenology.2016.04.055] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 01/22/2016] [Accepted: 03/14/2016] [Indexed: 12/31/2022]
Abstract
The prevalence of diabetes mellitus, which currently affects 387 million people worldwide, is permanently rising in both adults and adolescents. Despite numerous treatment options, diabetes mellitus is a progressive disease with severe comorbidities, such as nephropathy, neuropathy, and retinopathy, as well as cardiovascular disease. Therefore, animal models predictive of the efficacy and safety of novel compounds in humans are of great value to address the unmet need for improved therapeutics. Although rodent models provide important mechanistic insights, their predictive value for therapeutic outcomes in humans is limited. In recent years, the pig has gained importance for biomedical research because of its close similarity to human anatomy, physiology, size, and, in contrast to non-human primates, better ethical acceptance. In this review, anatomic, biochemical, physiological, and morphologic aspects relevant to diabetes research will be compared between different animal species, that is, mouse, rat, rabbit, pig, and non-human primates. The value of the pig as a model organism for diabetes research will be highlighted, and (dis)advantages of the currently available approaches for the generation of pig models exhibiting characteristics of metabolic syndrome or type 2 diabetes mellitus will be discussed.
Collapse
Affiliation(s)
- Simone Renner
- Gene Center and Center for Innovative Medical Models (CiMM), Ludwig-Maximilians-Universität München, Munich, Germany; German Center for Diabetes Research (DZD), Helmholtz Zentrum München, Neuherberg, Germany.
| | - Britta Dobenecker
- Chair of Animal Nutrition and Dietetics, Department of Veterinary Science, LMU Munich, Munich, Germany
| | - Andreas Blutke
- Institute of Veterinary Pathology, Center for Clinical Veterinary Medicine, LMU Munich, Germany
| | - Susanne Zöls
- Clinic for Swine, Center for Clinical Veterinary Medicine, LMU Munich, Germany
| | - Rüdiger Wanke
- Institute of Veterinary Pathology, Center for Clinical Veterinary Medicine, LMU Munich, Germany
| | - Mathias Ritzmann
- Clinic for Swine, Center for Clinical Veterinary Medicine, LMU Munich, Germany
| | - Eckhard Wolf
- Gene Center and Center for Innovative Medical Models (CiMM), Ludwig-Maximilians-Universität München, Munich, Germany; German Center for Diabetes Research (DZD), Helmholtz Zentrum München, Neuherberg, Germany
| |
Collapse
|
20
|
Abstract
Pancreatic lipomatosis – also commonly called fat replacement – represents the most frequent benign pathologic condition of the adult pancreas. Most cases remain asymptomatic, and only some rare extreme degrees of lipomatosis or fat replacement may lead to exocrine pancreatic insufficiency. The precise etiology of the entity remains unclear, and the condition has been found associated with several diseases comprising diabetes mellitus, metabolic syndrome, acquired or hereditary pancreatitis, alcoholic hepatitis, cystic fibrosis and condition comprising increasing age, body mass index, or more precisely visceral fat index, and use of steroid therapy. Numerous cases are also associated with condition compromising the permeability of the pancreas ductal system, such as intraductal calculus, pancreatic tumors, and congenital or experimental stenosis. Uneven lipomatosis and fat replacement are also common presentations and responsible for the great diversity of imaging features. The reasons for uneven presentations are controversial and probably interweave embryologic or ductal hypotheses. Lipomatous pseudohypertrophy of the pancreas represents the most extreme situation of pancreatic lipomatosis and is considered, probably in a contestable way, as a rare, specific, and distinct entity. We hereby present an extensive pictorial review of the broad spectrum of imaging features of this entity. The images are extracted from a compilation of cases collected in our department over more than a decade. We review and discuss the embryologic and ductal hypothesis, the differential diagnosis. Finally, we illustrate some unusual presentations and evolutions.
Collapse
|
21
|
Nolte T, Brander-Weber P, Dangler C, Deschl U, Elwell MR, Greaves P, Hailey R, Leach MW, Pandiri AR, Rogers A, Shackelford CC, Spencer A, Tanaka T, Ward JM. Nonproliferative and Proliferative Lesions of the Gastrointestinal Tract, Pancreas and Salivary Glands of the Rat and Mouse. J Toxicol Pathol 2016; 29:1S-125S. [PMID: 26973378 PMCID: PMC4765498 DOI: 10.1293/tox.29.1s] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The INHAND (International Harmonization of Nomenclature and Diagnostic Criteria for Lesions in Rats and Mice) project is a joint initiative of the Societies of Toxicologic Pathology from Europe (ESTP), Great Britain (BSTP), Japan (JSTP), and North America (STP) to develop an internationally accepted nomenclature and diagnostic criteria for nonproliferative and proliferative lesions in laboratory animals. The purpose of this publication is to provide a standardized nomenclature and diagnostic criteria for classifying lesions in the digestive system including the salivary glands and the exocrine pancreas of laboratory rats and mice. Most lesions are illustrated by color photomicrographs. The standardized nomenclature, the diagnostic criteria, and the photomicrographs are also available electronically on the Internet (http://www.goreni.org/). Sources of material included histopathology databases from government, academia, and industrial laboratories throughout the world. Content includes spontaneous and age related lesions as well as lesions induced by exposure to test items. Relevant infectious and parasitic lesions are included as well. A widely accepted and utilized international harmonization of nomenclature and diagnostic criteria for the digestive system will decrease misunderstandings among regulatory and scientific research organizations in different countries and provide a common language to increase and enrich international exchanges of information among toxicologists and pathologists.
Collapse
Affiliation(s)
- Thomas Nolte
- Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach an
der Riss, 88397, Germany
- Chairman of the Digestive Tract INHAND Committee
| | - Patricia Brander-Weber
- Novartis Institutes for BioMedical Research, Novartis Pharma
AG, CH-4002 Basel, Switzerland
| | - Charles Dangler
- Jackson Laboratory, Bar Harbor, Maine 04609, USA.
Present: Sanofi5 The Mountain Road, Framingham, Massachusetts 01740,
USA
| | - Ulrich Deschl
- Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach an
der Riss, 88397, Germany
| | - Michael R. Elwell
- Covance Laboratories, Inc. 14500 Avion Parkway, Ste 125,
Chantilly, Virginia 20151, USA
| | - Peter Greaves
- University of Leicester, Department of Cancer Studies and
Molecular Medicine, Robert Kilpatrick Clinical Science Building, Leicester Royal
Infirmary, Leicester LE2 7LX, United Kingdom
| | - Richard Hailey
- GlaxoSmithKline PO Box 14164 Durham, North Carolina 27709,
USA
| | | | - Arun R. Pandiri
- Cellular and Molecular Pathology Branch, National Toxicology
Program, National Institute of Environmental Health Sciences, Research Triangle Park,
North Carolina 27709, USA
- Experimental Pathology Laboratories, Inc. PO Box 12766,
Research Triangle Park, North Carolina 27709, USA
| | - Arlin Rogers
- Tufts University, Department of Biomedical Sciences, 274
Tremont Street, Massachusetts 02111, USA
| | - Cynthia C. Shackelford
- Cellular and Molecular Pathology Branch, National Toxicology
Program, National Institute of Environmental Health Sciences, Research Triangle Park,
North Carolina 27709, USA
| | - Andrew Spencer
- Covance Laboratories Ltd, Alnwick Research Centre,
Willowburn Avenue, Alnwick, Northumberland NE66 2JH United Kingdom
| | | | | |
Collapse
|
22
|
Quesada R, Andaluz A, Cáceres M, Moll X, Iglesias M, Dorcaratto D, Poves I, Berjano E, Grande L, Burdío F. Long-term evolution of acinar-to-ductal metaplasia and β-cell mass after radiofrequency-assisted transection of the pancreas in a controlled large animal model. Pancreatology 2015; 16:38-43. [PMID: 26639388 DOI: 10.1016/j.pan.2015.10.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Revised: 10/30/2015] [Accepted: 10/31/2015] [Indexed: 12/11/2022]
Abstract
BACKGROUND Pancreatic duct ligation (PDL) has been used as a model of chronic pancreatitis and as a model to increase β-cell mass. However, studies in mice have demonstrated acinar regeneration after PDL, questioning the long-term validity of the model. We aim to elucidate whether RF-assisted transection (RFAT) of the main pancreatic duct is a reliable PDL model, both in short (ST, 1-month) and long-term (LT, 6-months) follow-ups. METHODS Eleven pigs were subjected to RFAT. Biochemical (serum/peripancreatic amylase and glucose) and histological changes (including a semiautomatic morphometric study of over 1000 images/pancreas and IHC analysis) were evaluated after ST or LT follow-up and also in fresh pancreas specimens that were used as controls for 1 (n = 4) and 6 months (n = 6). RESULTS The distal pancreas in the ST was characterized by areas of acinar-to-ductal metaplasia (56%) which were significantly reduced at LT (21%) by fibrotic replacement and adipose tissue. The endocrine mass showed a normal increase. CONCLUSION RFAT in the pig seems to be an appropriate PDL model without restoration of pancreatic drainage or reduction of endocrine mass.
Collapse
Affiliation(s)
- Rita Quesada
- Cancer Research Group HBP, Fundación Instituto Mar de Investigaciones Médicas, Doctor Aiguader 88, Barcelona 08003, Spain.
| | - Anna Andaluz
- Medicine and Surgery of Animals Department, Facultat de Veterinària, Universitat Autònoma de Barcelona, Bellaterra, Barcelona 08193, Spain
| | - Marta Cáceres
- General and Digestive Surgery Department, Hospital Universitari Sagrat Cor, Viladomat 288, 08029 Barcelona, Spain
| | - Xavier Moll
- Medicine and Surgery of Animals Department, Facultat de Veterinària, Universitat Autònoma de Barcelona, Bellaterra, Barcelona 08193, Spain
| | - Mar Iglesias
- Department of Pathology, Hospital del Mar, Passeig Marítim 25-29, Barcelona 08003, Spain
| | - Dimitri Dorcaratto
- Hepatobiliary and Liver Transplant Surgical Unit, St. Vincent's University Hospital, Elm Park, Dublin 4, Ireland
| | - Ignasi Poves
- General Surgery Department, Hospital del Mar, Passeig Marítim 25-29, Barcelona 08003, Spain
| | - Enrique Berjano
- Biomedical Synergy, Electronic Engineering Department, Universitat Politècnica de València, Valencia 46022, Spain
| | - Luis Grande
- General Surgery Department, Hospital del Mar, Passeig Marítim 25-29, Barcelona 08003, Spain
| | - Fernando Burdío
- General Surgery Department, Hospital del Mar, Passeig Marítim 25-29, Barcelona 08003, Spain
| |
Collapse
|
23
|
Mills JC, Sansom OJ. Reserve stem cells: Differentiated cells reprogram to fuel repair, metaplasia, and neoplasia in the adult gastrointestinal tract. Sci Signal 2015; 8:re8. [PMID: 26175494 PMCID: PMC4858190 DOI: 10.1126/scisignal.aaa7540] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
It has long been known that differentiated cells can switch fates, especially in vitro, but only recently has there been a critical mass of publications describing the mechanisms adult, postmitotic cells use in vivo to reverse their differentiation state. We propose that this sort of cellular reprogramming is a fundamental cellular process akin to apoptosis or mitosis. Because reprogramming can invoke regenerative cells from mature cells, it is critical to the long-term maintenance of tissues like the pancreas, which encounter large insults during adulthood but lack constitutively active adult stem cells to repair the damage. However, even in tissues with adult stem cells, like the stomach and intestine, reprogramming may allow mature cells to serve as reserve ("quiescent") stem cells when normal stem cells are compromised. We propose that the potential downside to reprogramming is that it increases risk for cancers that occur late in adulthood. Mature, long-lived cells may have years of exposure to mutagens. Mutations that affect the physiological function of differentiated, postmitotic cells may lead to apoptosis, but mutations in genes that govern proliferation might not be selected against. Hence, reprogramming with reentry into the cell cycle might unmask those mutations, causing an irreversible progenitor-like, proliferative state. We review recent evidence showing that reprogramming fuels irreversible metaplastic and precancerous proliferation in the stomach and pancreas. Finally, we illustrate how we think reprogrammed differentiated cells are likely candidates as cells of origin for cancers of the intestine.
Collapse
Affiliation(s)
- Jason C Mills
- Division of Gastroenterology, Departments of Medicine, Pathology & Immunology, and Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110, USA.
| | - Owen J Sansom
- Cancer Research UK Beatson Institute, Garscube Estate, Switchback Road, Glasgow G61 1BD, UK.
| |
Collapse
|
24
|
Dolenšek J, Rupnik MS, Stožer A. Structural similarities and differences between the human and the mouse pancreas. Islets 2015; 7:e1024405. [PMID: 26030186 PMCID: PMC4589993 DOI: 10.1080/19382014.2015.1024405] [Citation(s) in RCA: 202] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Revised: 02/20/2015] [Accepted: 02/23/2015] [Indexed: 02/08/2023] Open
Abstract
Mice remain the most studied animal model in pancreas research. Since the findings of this research are typically extrapolated to humans, it is important to understand both similarities and differences between the 2 species. Beside the apparent difference in size and macroscopic organization of the organ in the 2 species, there are a number of less evident and only recently described differences in organization of the acinar and ductal exocrine tissue, as well as in the distribution, composition, and architecture of the endocrine islets of Langerhans. Furthermore, the differences in arterial, venous, and lymphatic vessels, as well as innervation are potentially important. In this article, the structure of the human and the mouse pancreas, together with the similarities and differences between them are reviewed in detail in the light of conceivable repercussions for basic research and clinical application.
Collapse
Affiliation(s)
- Jurij Dolenšek
- Institute of Physiology; Faculty of Medicine; University of Maribor; Maribor, Slovenia
| | - Marjan Slak Rupnik
- Institute of Physiology; Faculty of Medicine; University of Maribor; Maribor, Slovenia
- Centre for Open Innovations and Research Core@UM; University of Maribor; Maribor, Slovenia
- Institute of Physiology; Center for Physiology and Pharmacology; Medical University of Vienna; Vienna, Austria
| | - Andraž Stožer
- Institute of Physiology; Faculty of Medicine; University of Maribor; Maribor, Slovenia
- Centre for Open Innovations and Research Core@UM; University of Maribor; Maribor, Slovenia
| |
Collapse
|
25
|
Bhatia V, Rastellini C, Han S, Aronson JF, Greeley GH, Falzon M. Acinar cell-specific knockout of the PTHrP gene decreases the proinflammatory and profibrotic responses in pancreatitis. Am J Physiol Gastrointest Liver Physiol 2014; 307:G533-49. [PMID: 25035110 PMCID: PMC4154118 DOI: 10.1152/ajpgi.00428.2013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Pancreatitis is a necroinflammatory disease with acute and chronic manifestations. Accumulated damage incurred during repeated bouts of acute pancreatitis (AP) can lead to chronic pancreatitis (CP). Pancreatic parathyroid hormone-related protein (PTHrP) levels are elevated in a mouse model of cerulein-induced AP. Here, we show elevated PTHrP levels in mouse models of pancreatitis induced by chronic cerulein administration and pancreatic duct ligation. Because acinar cells play a major role in the pathophysiology of pancreatitis, mice with acinar cell-specific targeted disruption of the Pthrp gene (PTHrP(Δacinar)) were generated to assess the role of acinar cell-secreted PTHrP in pancreatitis. These mice were generated using Cre-LoxP technology and the acinar cell-specific elastase promoter. PTHrP(Δacinar) exerted protective effects in cerulein and pancreatic duct ligation models, evident as decreased edema, histological damage, amylase secretion, pancreatic stellate cell (PSC) activation, and extracellular matrix deposition. Treating acinar cells in vitro with cerulein increased IL-6 expression and NF-κB activity; these effects were attenuated in PTHrP(Δacinar) cells, as were the cerulein- and carbachol-induced elevations in amylase secretion. The cerulein-induced upregulation of procollagen I expression was lost in PSCs from PTHrP(Δacinar) mice. PTHrP immunostaining was elevated in human CP sections. The cerulein-induced upregulation of IL-6 and ICAM-1 (human acinar cells) and procollagen I (human PSCs) was suppressed by pretreatment with the PTH1R antagonist, PTHrP (7-34). These findings establish PTHrP as a novel mediator of inflammation and fibrosis associated with CP. Acinar cell-secreted PTHrP modulates acinar cell function via its effects on proinflammatory cytokine release and functions via a paracrine pathway to activate PSCs.
Collapse
Affiliation(s)
- Vandanajay Bhatia
- 1Department of Pharmacology and Toxicology, University of Texas Medical Branch, Galveston, Texas;
| | | | - Song Han
- 2Department of Surgery, University of Texas Medical Branch, Galveston, Texas;
| | - Judith F. Aronson
- 3Department of Pathology, University of Texas Medical Branch, Galveston, Texas; and
| | - George H. Greeley
- 2Department of Surgery, University of Texas Medical Branch, Galveston, Texas;
| | - Miriam Falzon
- Department of Pharmacology and Toxicology, University of Texas Medical Branch, Galveston, Texas; Sealy Center for Cancer Cell Biology, University of Texas Medical Branch, Galveston, Texas
| |
Collapse
|
26
|
Radiofrequency pancreatic ablation and section of the main pancreatic duct does not lead to necrotizing pancreatitis. Pancreas 2014; 43:931-7. [PMID: 24977335 DOI: 10.1097/mpa.0000000000000156] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
OBJECTIVE The aim of this study was to determine whether radiofrequency ablation (RFA) of the pancreas and subsequent transection of the main pancreatic duct may avoid the risk of both necrotizing pancreatitis and postoperative pancreatic fistula (POPF) formation. METHODS Thirty-two rats were subjected to RFA and section of the pancreas over their portal vein. Animals were killed at 3, 7, 15, and 21 days (groups 0-3, respectively). Two additional control groups (sham operation and user manipulation only, respectively) of 15 days of postoperative period were considered. Postoperative complications, histological changes (including morphometric and immunohistochemical analysis), and incidence of POPF were evaluated. RESULTS A significant increase in serum amylase levels (P < 0.05) on the third postoperative day, which return to baseline levels in the following weeks, was noted in groups 0 to 3. Those groups showed a rapid atrophy of the distal pancreas by apoptosis with no signs of necrotizing pancreatitis or POPF. The distal pancreas in groups 1 to 3 compared with group 0 and control groups showed a significant increase of small islets (<1000 µm). CONCLUSIONS The rapid acinar atrophy of the distal pancreas after RFA and section of the pancreatic ducts in this model does not lead to necrotizing pancreatitis.
Collapse
|
27
|
Hyun JJ, Lee HS. Experimental models of pancreatitis. Clin Endosc 2014. [PMID: 24944983 DOI: 10.5946/ce.201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Acute pancreatitis is an inflammatory disease characterized by interstitial edema, inflammatory cell infiltration, and acinar cell necrosis, depending on its severity. Regardless of the extent of tissue injury, acute pancreatitis is a completely reversible process with evident normal tissue architecture after recovery. Its pathogenic mechanism has been known to be closely related to intracellular digestive enzyme activation. In contrast to acute pancreatitis, chronic pancreatitis is characterized by irreversible tissue damage such as acinar cell atrophy and pancreatic fibrosis that results in exocrine and endocrine insufficiency. Recently, many studies of chronic pancreatitis have been prompted by the discovery of the pancreatic stellate cell, which has been identified and distinguished as the key effector cell of pancreatic fibrosis. However, investigations into the pathogenesis and treatment of pancreatitis face many obstacles because of its anatomical location and disparate clinical course. Due to these difficulties, most of our knowledge on pancreatitis is based on research conducted using experimental models of pancreatitis. In this review, several experimental models of pancreatitis will be discussed in terms of technique, advantages, and limitations.
Collapse
Affiliation(s)
- Jong Jin Hyun
- Division of Gastroenterology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - Hong Sik Lee
- Division of Gastroenterology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| |
Collapse
|
28
|
Hyun JJ, Lee HS. Experimental models of pancreatitis. Clin Endosc 2014; 47:212-6. [PMID: 24944983 PMCID: PMC4058537 DOI: 10.5946/ce.2014.47.3.212] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2014] [Revised: 04/15/2014] [Accepted: 04/16/2014] [Indexed: 02/06/2023] Open
Abstract
Acute pancreatitis is an inflammatory disease characterized by interstitial edema, inflammatory cell infiltration, and acinar cell necrosis, depending on its severity. Regardless of the extent of tissue injury, acute pancreatitis is a completely reversible process with evident normal tissue architecture after recovery. Its pathogenic mechanism has been known to be closely related to intracellular digestive enzyme activation. In contrast to acute pancreatitis, chronic pancreatitis is characterized by irreversible tissue damage such as acinar cell atrophy and pancreatic fibrosis that results in exocrine and endocrine insufficiency. Recently, many studies of chronic pancreatitis have been prompted by the discovery of the pancreatic stellate cell, which has been identified and distinguished as the key effector cell of pancreatic fibrosis. However, investigations into the pathogenesis and treatment of pancreatitis face many obstacles because of its anatomical location and disparate clinical course. Due to these difficulties, most of our knowledge on pancreatitis is based on research conducted using experimental models of pancreatitis. In this review, several experimental models of pancreatitis will be discussed in terms of technique, advantages, and limitations.
Collapse
Affiliation(s)
- Jong Jin Hyun
- Division of Gastroenterology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - Hong Sik Lee
- Division of Gastroenterology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| |
Collapse
|
29
|
Abstract
Acute pancreatitis is an inflammatory disease characterized by interstitial edema, inflammatory cell infiltration, and acinar cell necrosis, depending on its severity. Regardless of the extent of tissue injury, acute pancreatitis is a completely reversible process with evident normal tissue architecture after recovery. Its pathogenic mechanism has been known to be closely related to intracellular digestive enzyme activation. In contrast to acute pancreatitis, chronic pancreatitis is characterized by irreversible tissue damage such as acinar cell atrophy and pancreatic fibrosis that results in exocrine and endocrine insufficiency. Recently, many studies of chronic pancreatitis have been prompted by the discovery of the pancreatic stellate cell, which has been identified and distinguished as the key effector cell of pancreatic fibrosis. However, investigations into the pathogenesis and treatment of pancreatitis face many obstacles because of its anatomical location and disparate clinical course. Due to these difficulties, most of our knowledge on pancreatitis is based on research conducted using experimental models of pancreatitis. In this review, several experimental models of pancreatitis will be discussed in terms of technique, advantages, and limitations.
Collapse
|
30
|
Chadwick KD, Fletcher AM, Parrula MC, Bonner-Weir S, Mangipudy RS, Janovitz E, Graziano MJ, Roy D, Reilly TP. Occurrence of spontaneous pancreatic lesions in normal and diabetic rats: a potential confounding factor in the nonclinical assessment of GLP-1-based therapies. Diabetes 2014; 63:1303-14. [PMID: 24222349 DOI: 10.2337/db13-1268] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Glucagon-like peptide 1-based therapies, collectively described as incretins, produce glycemic benefits in the treatment of type 2 diabetes. Recent publications raised concern for a potential increased risk of pancreatitis and pancreatic cancer with incretins based in part on findings from a small number of rodents. However, extensive toxicology assessments in a substantial number of animals dosed up to 2 years at high multiples of human exposure do not support these concerns. We hypothesized that the lesions being attributed to incretins are commonly observed background findings and endeavored to characterize the incidence of spontaneous pancreatic lesions in three rat strains (Sprague-Dawley [S-D] rats, Zucker diabetic fatty [ZDF] rats, and rats expressing human islet amyloid polypeptide [HIP]; n = 36/group) on a normal or high-fat diet over 4 months. Pancreatic findings in all groups included focal exocrine degeneration, atrophy, inflammation, ductular cell proliferation, and/or observations in large pancreatic ducts similar to those described in the literature, with an incidence of exocrine atrophy/inflammation seen in S-D (42-72%), HIP (39%), and ZDF (6%) rats. These data indicate that the pancreatic findings attributed to incretins are common background findings, observed without drug treatment and independent of diet or glycemic status, suggesting a need to exercise caution when interpreting the relevance of some recent reports regarding human safety.
Collapse
|
31
|
Hori M, Takahashi M, Hiraoka N, Yamaji T, Mutoh M, Ishigamori R, Furuta K, Okusaka T, Shimada K, Kosuge T, Kanai Y, Nakagama H. Association of pancreatic Fatty infiltration with pancreatic ductal adenocarcinoma. Clin Transl Gastroenterol 2014; 5:e53. [PMID: 24622469 PMCID: PMC3972693 DOI: 10.1038/ctg.2014.5] [Citation(s) in RCA: 116] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Revised: 01/06/2014] [Accepted: 01/15/2014] [Indexed: 12/17/2022] Open
Abstract
OBJECTIVES: Fatty infiltration (FI) in the pancreas is positively correlated with high body mass index (BMI) or obesity, and the prevalence of diabetes mellitus (DM), which are well-known risk factors of pancreatic cancer. However, the association of FI in the pancreas with pancreatic cancer is unclear. Recently, we have shown that Syrian golden hamsters feature FI of the pancreas, the severity of which increases along with the progression of carcinogenesis induced by a chemical carcinogen. To translate the results to a clinical setting, we investigated whether FI in the pancreas is associated with pancreatic cancer in a series of patients who had undergone pancreatoduodenectomy. METHODS: In the series, we identified 102 cases with pancreatic ductal adenocarcinoma (PDAC) and 85 controls with cancers except for PDAC. The degree of FI was evaluated histopathologically from the area occupied by adipocytes in pancreas sections, and was compared between the cases and controls. RESULTS: The degree of FI in the pancreas was significantly higher in cases than in controls (median 26 vs. 15%, P<0.001) and positively associated with PDAC, even after adjustment for BMI, prevalence of DM and other confounding factors (odds ratio (OR), 6.1; P<0.001). BMI was identified as the most significantly associated factor with FI in the pancreas. CONCLUSIONS: There is a positive correlation between FI in the pancreas and pancreatic cancer.
Collapse
Affiliation(s)
- Mika Hori
- Division of Cancer Development System, National Cancer Center Research Institute, Tokyo, Japan
| | - Mami Takahashi
- Central Animal Division, National Cancer Center Research Institute, Tokyo, Japan
| | - Nobuyoshi Hiraoka
- Division of Molecular Pathology, National Cancer Center Research Institute, Tokyo, Japan
| | - Taiki Yamaji
- Epidemiology and Prevention Division, Research Center for Cancer Prevention and Screening, National Cancer Center, Tokyo, Japan
| | - Michihiro Mutoh
- Division of Cancer Prevention Research, National Cancer Center Research Institute, Tokyo, Japan
| | - Rikako Ishigamori
- Division of Cancer Prevention Research, National Cancer Center Research Institute, Tokyo, Japan
| | - Koh Furuta
- Division of Pathology and Clinical Laboratories, National Cancer Center Hospital, Tokyo, Japan
| | - Takuji Okusaka
- Hepatobiliary and Pancreatic Oncology Division, National Cancer Center Hospital, Tokyo, Japan
| | - Kazuaki Shimada
- Hepatobiliary and Pancreatic Surgery Division, National Cancer Center Hospital, Tokyo, Japan
| | - Tomoo Kosuge
- Hepatobiliary and Pancreatic Surgery Division, National Cancer Center Hospital, Tokyo, Japan
| | - Yae Kanai
- Division of Molecular Pathology, National Cancer Center Research Institute, Tokyo, Japan
| | - Hitoshi Nakagama
- 1] Division of Cancer Development System, National Cancer Center Research Institute, Tokyo, Japan [2] Division of Cancer Prevention Research, National Cancer Center Research Institute, Tokyo, Japan
| |
Collapse
|
32
|
Zhao JB, Liao DH, Nissen TD. Animal models of pancreatitis: Can it be translated to human pain study? World J Gastroenterol 2013; 19:7222-7230. [PMID: 24259952 PMCID: PMC3831203 DOI: 10.3748/wjg.v19.i42.7222] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Revised: 08/12/2013] [Accepted: 08/20/2013] [Indexed: 02/06/2023] Open
Abstract
Chronic pancreatitis affects many individuals around the world, and the study of the underlying mechanisms leading to better treatment possibilities are important tasks. Therefore, animal models are needed to illustrate the basic study of pancreatitis. Recently, animal models of acute and chronic pancreatitis have been thoroughly reviewed, but few reviews address the important aspect on the translation of animal studies to human studies. It is well known that pancreatitis is associated with epigastric pain, but the understanding regarding to mechanisms and appropriate treatment of this pain is still unclear. Using animal models to study pancreatitis associated visceral pain is difficult, however, these types of models are a unique way to reveal the mechanisms behind pancreatitis associated visceral pain. In this review, the animal models of acute, chronic and un-common pancreatitis are briefly outlined and animal models related to pancreatitis associated visceral pain are also addressed.
Collapse
|
33
|
Ernst TM, Schwinge D, Raabe N, Daubmann A, Kaul MG, Adam G, Schramm C, Ittrich H. Imaging of the murine biliopancreatic tract at 7 tesla: Technique and results in a model of primary sclerosing cholangitis. J Magn Reson Imaging 2013; 40:1355-64. [DOI: 10.1002/jmri.24475] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2013] [Accepted: 09/23/2013] [Indexed: 01/15/2023] Open
Affiliation(s)
- Thomas M. Ernst
- Department of Diagnostic and Interventional Radiology; University Medical Center Hamburg-Eppendorf; Germany
| | - Dorothee Schwinge
- I. Department of Internal Medicine; University Medical Center Hamburg-Eppendorf; Germany
| | - Nina Raabe
- Department of Diagnostic and Interventional Radiology; University Medical Center Hamburg-Eppendorf; Germany
| | - Anne Daubmann
- Department of Medical Biometry and Epidemiology; University Medical Center Hamburg-Eppendorf; Germany
| | - Michael G. Kaul
- Department of Diagnostic and Interventional Radiology; University Medical Center Hamburg-Eppendorf; Germany
| | - Gerhard Adam
- Department of Diagnostic and Interventional Radiology; University Medical Center Hamburg-Eppendorf; Germany
| | - Christoph Schramm
- I. Department of Internal Medicine; University Medical Center Hamburg-Eppendorf; Germany
| | - Harald Ittrich
- Department of Diagnostic and Interventional Radiology; University Medical Center Hamburg-Eppendorf; Germany
| |
Collapse
|
34
|
Huch M, Bonfanti P, Boj SF, Sato T, Loomans CJM, van de Wetering M, Sojoodi M, Li VSW, Schuijers J, Gracanin A, Ringnalda F, Begthel H, Hamer K, Mulder J, van Es JH, de Koning E, Vries RGJ, Heimberg H, Clevers H. Unlimited in vitro expansion of adult bi-potent pancreas progenitors through the Lgr5/R-spondin axis. EMBO J 2013; 32:2708-21. [PMID: 24045232 PMCID: PMC3801438 DOI: 10.1038/emboj.2013.204] [Citation(s) in RCA: 493] [Impact Index Per Article: 44.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2013] [Accepted: 08/16/2013] [Indexed: 02/06/2023] Open
Abstract
Lgr5 marks adult stem cells in multiple adult organs and is a receptor for the Wnt-agonistic R-spondins (RSPOs). Intestinal, stomach and liver Lgr5+ stem cells grow in 3D cultures to form ever-expanding organoids, which resemble the tissues of origin. Wnt signalling is inactive and Lgr5 is not expressed under physiological conditions in the adult pancreas. However, we now report that the Wnt pathway is robustly activated upon injury by partial duct ligation (PDL), concomitant with the appearance of Lgr5 expression in regenerating pancreatic ducts. In vitro, duct fragments from mouse pancreas initiate Lgr5 expression in RSPO1-based cultures, and develop into budding cyst-like structures (organoids) that expand five-fold weekly for >40 weeks. Single isolated duct cells can also be cultured into pancreatic organoids, containing Lgr5 stem/progenitor cells that can be clonally expanded. Clonal pancreas organoids can be induced to differentiate into duct as well as endocrine cells upon transplantation, thus proving their bi-potentiality. The establishment of conditions for long-term culture and expansion of adult, bi-potent pancreas progenitors may facilitate novel and tailored therapeutic approaches.
Collapse
Affiliation(s)
- Meritxell Huch
- Hubrecht Institute for Developmental Biology and Stem Cell Research, University Medical Centre Utrecht, Utrecht, The Netherlands
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
35
|
Rankin MM, Wilbur CJ, Rak K, Shields EJ, Granger A, Kushner JA. β-Cells are not generated in pancreatic duct ligation-induced injury in adult mice. Diabetes 2013; 62:1634-45. [PMID: 23349489 PMCID: PMC3636617 DOI: 10.2337/db12-0848] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The existence of adult β-cell progenitors remains the most controversial developmental biology topic in diabetes research. It has been reported that β-cell progenitors can be activated by ductal ligation-induced injury of adult mouse pancreas and apparently act in a cell-autonomous manner to double the functional β-cell mass within a week by differentiation and proliferation. Here, we demonstrate that pancreatic duct ligation (PDL) does not activate progenitors to contribute to β-cell mass expansion. Rather, PDL stimulates massive pancreatic injury, which alters pancreatic composition and thus complicates accurate measurement of β-cell content via traditional morphometry methodologies that superficially sample the pancreas. To overcome this potential bias, we quantified β-cells from the entire pancreas and observed that β-cell mass and insulin content are totally unchanged by PDL-induced injury. Lineage-tracing studies using sequential administration of thymidine analogs, rat insulin 2 promoter-driven cre-lox, and low-frequency ubiquitous cre-lox reveal that PDL does not convert progenitors to the β-cell lineage. Thus, we conclude that β-cells are not generated in injured adult mouse pancreas.
Collapse
Affiliation(s)
- Matthew M. Rankin
- Division of Endocrinology and Diabetes, Children’s Hospital of Philadelphia, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania
| | - Christopher J. Wilbur
- Division of Endocrinology and Diabetes, Children’s Hospital of Philadelphia, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania
| | - Kimberly Rak
- Division of Endocrinology and Diabetes, Children’s Hospital of Philadelphia, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania
| | - Emily J. Shields
- Division of Endocrinology and Diabetes, Children’s Hospital of Philadelphia, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania
| | - Anne Granger
- Division of Endocrinology and Diabetes, Children’s Hospital of Philadelphia, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania
| | - Jake A. Kushner
- McNair Medical Institute, Pediatric Diabetes and Endocrinology, Baylor College of Medicine, Houston, Texas
- Texas Children’s Diabetes and Endocrinology Center, Texas Children’s Hospital, Houston, Texas
| |
Collapse
|
36
|
|
37
|
Abu-El-Haija M, Ramachandran S, Meyerholz DK, Abu-El-Haija M, Griffin M, Giriyappa RL, Stoltz DA, Welsh MJ, McCray PB, Uc A. Pancreatic damage in fetal and newborn cystic fibrosis pigs involves the activation of inflammatory and remodeling pathways. THE AMERICAN JOURNAL OF PATHOLOGY 2012; 181:499-507. [PMID: 22683312 DOI: 10.1016/j.ajpath.2012.04.024] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2012] [Revised: 04/04/2012] [Accepted: 04/12/2012] [Indexed: 01/28/2023]
Abstract
Pancreatic disease has onset in utero in humans with cystic fibrosis (CF), and progresses over time to complete destruction of the organ. The exact mechanisms leading to pancreatic damage in CF are incompletely understood. Inflammatory cells are present in the pancreas of newborn pigs with CF (CF pigs) and humans, which suggests that inflammation may have a role in the destructive process. We wondered whether tissue inflammation and genes associated with inflammatory pathways were increased in the pancreas of fetal CF pigs [83 to 90 days gestation (normal pig gestation is ~114 days)] and newborn pigs. Compared with fetal pigs without CF (non-CF pigs), in fetal CF pigs, the pancreas exhibited patchy inflammation and acinar atrophy, with progression in distribution and severity in neonatal CF pigs. Large-scale transcript profiling revealed that the pancreas in fetal and newborn CF pigs exhibited significantly increased expression of proinflammatory, complement cascade, and profibrotic genes when compared with fetal and newborn non-CF pigs. Acinar cells exhibited increased apoptosis in the pancreas of fetal and newborn CF pigs. α-Smooth muscle actin and transforming growth factor β1 were increased in both fetal and newborn CF pig pancreas, suggesting activation of profibrotic pathways. Cell proliferation and mucous cell metaplasia were detected in newborn, but not fetal, CF pigs, indicating that they were not an initiator of pathogenesis but a response. Proinflammatory, complement cascade, proapoptotic, and profibrotic pathways are activated in CF pig pancreas, and likely contribute to the destructive process.
Collapse
Affiliation(s)
- Maisam Abu-El-Haija
- Department of Pediatrics, University of Iowa, Carver College of Medicine, Iowa City, Iowa 52242, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Aghdassi AA, Mayerle J, Christochowitz S, Weiss FU, Sendler M, Lerch MM. Animal models for investigating chronic pancreatitis. FIBROGENESIS & TISSUE REPAIR 2011; 4:26. [PMID: 22133269 PMCID: PMC3274456 DOI: 10.1186/1755-1536-4-26] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2011] [Accepted: 12/01/2011] [Indexed: 02/06/2023]
Abstract
Chronic pancreatitis is defined as a continuous or recurrent inflammatory disease of the pancreas characterized by progressive and irreversible morphological changes. It typically causes pain and permanent impairment of pancreatic function. In chronic pancreatitis areas of focal necrosis are followed by perilobular and intralobular fibrosis of the parenchyma, by stone formation in the pancreatic duct, calcifications in the parenchyma as well as the formation of pseudocysts. Late in the course of the disease a progressive loss of endocrine and exocrine function occurs. Despite advances in understanding the pathogenesis no causal treatment for chronic pancreatitis is presently available. Thus, there is a need for well characterized animal models for further investigations that allow translation to the human situation. This review summarizes existing experimental models and distinguishes them according to the type of pathological stimulus used for induction of pancreatitis. There is a special focus on pancreatic duct ligation, repetitive overstimulation with caerulein and chronic alcohol feeding. Secondly, attention is drawn to genetic models that have recently been generated and which mimic features of chronic pancreatitis in man. Each technique will be supplemented with data on the pathophysiological background of the model and their limitations will be discussed.
Collapse
Affiliation(s)
- Alexander A Aghdassi
- Department of Medicine A, University Medicine, Ernst-Moritz-Arndt-University Greifswald, Greifswald, Germany.
| | | | | | | | | | | |
Collapse
|
39
|
The novel triad of dorsal agenesis of the pancreas with concurrent pancreatic ductal adenocarcinoma and nonalcoholic chronic calcific pancreatitis: a case series and review of the literature. J Gastrointest Surg 2011; 15:1643-9. [PMID: 21512846 PMCID: PMC3282461 DOI: 10.1007/s11605-011-1542-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2011] [Accepted: 04/05/2011] [Indexed: 01/31/2023]
Abstract
INTRODUCTION Dorsal agenesis of the pancreas (DAP) is a rare congenital anomaly, with only 44 cases having been reported in the English literature since 1966. MATERIALS AND METHODS A retrospective review of our IRB-approved pancreatic surgery database was performed from November 2005 to November 2010 searching for cases of DAP. DISCUSSION Disorders in the retinoic acid (Raldh) and hedgehog (Hh) signaling pathways, which appear to play a role in the development of DAP, have been implicated in other diseases of the pancreas such as pancreatic ductal adenocarcinoma (PDA) and nonalcoholic chronic calcific pancreatitis (NCCP). CONCLUSION In this report, we describe three cases of DAP in the setting of PDA, two of which include the third component of NCCP. We provide a discussion of the clinical features of this novel triad and address the molecular pathways that relate to these respective diseases.
Collapse
|
40
|
Abstract
More research is now focused on pancreatic steatosis. Multiple definitions, clinical associations and synonyms for pancreatic steatosis are described in the literature and can be confusing. The integration and comparison of several studies concerning this topic is therefore challenging. In the past, pancreatic steatosis was considered an innocuous condition, a bystander of many underlying diseases (such as congenital syndromes, hemochromatosis and viral infection). However, evidence that pancreatic steatosis (strongly associated with obesity and the metabolic syndrome) has a role in type 2 diabetes mellitus, pancreatic exocrine dysfunction, acute pancreatitis, pancreatic cancer and the formation of pancreatic fistula after pancreatic surgery is emerging. This Review focuses on the different etiological factors and the clinical consequences of pancreatic steatosis.
Collapse
Affiliation(s)
- Mark M Smits
- Department of Gastroenterology & Hepatology, Vrije Universiteit University Medical Center, De Boelelaan 1117, Amsterdam, 1081 HV, The Netherlands.
| | | |
Collapse
|
41
|
Kopinke D, Brailsford M, Shea JE, Leavitt R, Scaife CL, Murtaugh LC. Lineage tracing reveals the dynamic contribution of Hes1+ cells to the developing and adult pancreas. Development 2011; 138:431-41. [PMID: 21205788 DOI: 10.1242/dev.053843] [Citation(s) in RCA: 153] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Notch signaling regulates numerous developmental processes, often acting either to promote one cell fate over another or else to inhibit differentiation altogether. In the embryonic pancreas, Notch and its target gene Hes1 are thought to inhibit endocrine and exocrine specification. Although differentiated cells appear to downregulate Hes1, it is unknown whether Hes1 expression marks multipotent progenitors, or else lineage-restricted precursors. Moreover, although rare cells of the adult pancreas express Hes1, it is unknown whether these represent a specialized progenitor-like population. To address these issues, we developed a mouse Hes1(CreERT2) knock-in allele to inducibly mark Hes1(+) cells and their descendants. We find that Hes1 expression in the early embryonic pancreas identifies multipotent, Notch-responsive progenitors, differentiation of which is blocked by activated Notch. In later embryogenesis, Hes1 marks exocrine-restricted progenitors, in which activated Notch promotes ductal differentiation. In the adult pancreas, Hes1 expression persists in rare differentiated cells, particularly terminal duct or centroacinar cells. Although we find that Hes1(+) cells in the resting or injured pancreas do not behave as adult stem cells for insulin-producing beta (β)-cells, Hes1 expression does identify stem cells throughout the small and large intestine. Together, these studies clarify the roles of Notch and Hes1 in the developing and adult pancreas, and open new avenues to study Notch signaling in this and other tissues.
Collapse
Affiliation(s)
- Daniel Kopinke
- Department of Human Genetics, University of Utah School of Medicine, Salt Lake City, UT 84112, USA
| | | | | | | | | | | |
Collapse
|
42
|
Mitochondrial dysfunction and apoptosis of acinar cells in chronic pancreatitis. J Gastroenterol 2008; 43:473-83. [PMID: 18600392 DOI: 10.1007/s00535-008-2179-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2007] [Accepted: 02/25/2008] [Indexed: 02/04/2023]
Abstract
BACKGROUND The mechanism of acinar cell death in human chronic pancreatitis (CP) remains largely unexplored. Previous studies have demonstrated the role played by apoptosis and necrosis in experimental pancreatitis; however, their relationship with the progression of CP remains unknown. The present study was carried out to elucidate the role and extent of apoptosis in CP tissues with different histopathological scores and to examine the possible apoptotic pathway involved. METHODS Pancreatic tissues (25 CP patients) that had been histopathologically graded (I-III) and ten normal pancreatic tissue samples were evaluated for apoptosis by DNA fragmentation and an in situ TUNEL assay. The expression of various apoptotic and antiapoptotic markers in the tissues were studied by immunohistochemistry and Western blotting. To elucidate the role of the mitochondria in acinar cell death, the mitochondrial membrane potential (DeltaPsim) and ATP levels were determined by flow cytometry and a luminometer. RESULTS The presence of DNA fragmentation and apoptotic nuclei in all CP tissues confirmed the presence of apoptosis. The apoptotic index in CP tissue ranged from 0.09% to 0.86% +/- 0.02% and was highest in grade II (0.7 +/- 0.04%) tissues. Differential upregulation of the apoptotic mediators p53, Bax, cytochrome c, and caspase-3 and -9, and downregulation of antiapoptotic Bcl-2, was observed in CP. DeltaPsim on the order of 1.2-to 2.2-fold and ATP depletion in the range of 23%-84% in CP tissues was observed. CONCLUSIONS Apoptosis plays an important role both in the initial stages and during the progression of CP, as evident in all tissue grades. Increased DeltaPsim, loss of ATP, and activation of caspases suggests the involvement of intrinsic pathways.
Collapse
|
43
|
Marrache F, Tu SP, Bhagat G, Pendyala S, Osterreicher CH, Gordon S, Ramanathan V, Penz-Osterreicher M, Betz KS, Song Z, Wang TC. Overexpression of interleukin-1beta in the murine pancreas results in chronic pancreatitis. Gastroenterology 2008; 135:1277-87. [PMID: 18789941 PMCID: PMC2707078 DOI: 10.1053/j.gastro.2008.06.078] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2007] [Revised: 05/10/2008] [Accepted: 06/24/2008] [Indexed: 12/18/2022]
Abstract
BACKGROUND & AIMS Chronic pancreatitis is a significant cause of morbidity and a known risk factor for pancreatic adenocarcinoma. Interleukin-1beta is a proinflammatory cytokine involved in pancreatic inflammation. We sought to determine whether targeted overexpression of interleukin-1beta in the pancreas could elicit localized inflammatory responses and chronic pancreatitis. METHODS We created a transgenic mouse model (elastase sshIL-1beta) in which the rat elastase promoter drives the expression of human interleukin-1beta. Mice were followed up for up to 2 years. Pancreata of elastase sshIL-1beta mice were analyzed for chronic pancreatitis-associated histologic and molecular changes. To study the potential effect of p53 mutation in chronic pancreatitis, elastase sshIL-1beta mice were crossed with p53(R172H) mice. RESULTS Three transgenic lines were generated, and in each line the pancreas was atrophic and occasionally showed dilation of pancreatic and biliary ducts secondary to proximal fibrotic stenosis. Pancreatic histology showed typical features of chronic pancreatitis. There was evidence for increased acinar proliferation and apoptosis, along with prominent expression of tumor necrosis factor-alpha; chemokine (C-X-C motif) ligand 1; stromal cell-derived factor 1; transforming growth factor-beta1; matrix metallopeptidase 2, 7, and 9; inhibitor of metalloproteinase 1; and cyclooxygenase 2. The severity of the lesions correlated well with the level of human interleukin-1beta expression. Older mice displayed acinar-ductal metaplasia but did not develop mouse pancreatic intraepithelial neoplasia or tumors. Elastase sshIL-1beta*p53(R172H/+) mice had increased frequency of tubular complexes, some of which were acinar-ductal metaplasia. CONCLUSIONS Overexpression of interleukin-1beta in the murine pancreas induces chronic pancreatitis. Elastase sshIL-1beta mice consistently develop severe chronic pancreatitis and constitute a promising model for studying chronic pancreatitis and its relationship with pancreatic adenocarcinoma.
Collapse
Affiliation(s)
- Frederic Marrache
- Division of Digestive and Liver Diseases, Columbia University Medical Center, New York 10032, USA
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Nakamura Y, Yi SQ, Terayama H, Naito M, Li J, Moriyama H, Tsuchida A, Itoh M. Sequential histopathology of pancreatic tissues in aly/aly mice. Cells Tissues Organs 2007; 186:204-9. [PMID: 17630478 DOI: 10.1159/000105675] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/04/2007] [Indexed: 11/19/2022] Open
Abstract
C57BL/6J strain mice carrying the homozygous autosomal recessive mutation alymphoplasia (aly) lack peripheral lymph nodes and Peyer's patches and exhibit chronic infiltration of lymphocytes into various organs. Pancreatitis, one of the inflammatory lesions, is considered to be of autoimmune origin; however, the target autoantigens have not yet been determined. In this study, pancreatic tissues of male aly/aly mice and wild-type mice at 1-65 weeks of age were light- and electron-microscopically examined to investigate when and how pancreatitis develops. The results showed that macrophages had first appeared and remained in the lymphatic lumen at 3 weeks of age and then a lot of eosinophilic granulocytes infiltrated into the interlobular connective tissues at 5 weeks of age. After the subsidence of eosinophilic inflammation, macrophages and B220+ cells appeared at the perivascular tissues at 9 weeks of age. Thereafter, both CD4+ and CD8+ cells finally participated in the interstitial inflammation from 11 weeks of age. It was noted that these leukocytes had infiltrated into the perivascular interstitium rather than the parenchymal tissues during the course of pancreatitis, although a large parenchymal area was finally degenerated and replaced by adipose tissue.
Collapse
Affiliation(s)
- Yoichi Nakamura
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
| | | | | | | | | | | | | | | |
Collapse
|
45
|
Karcaaltincaba M. CT differentiation of distal pancreas fat replacement and distal pancreas agenesis. Surg Radiol Anat 2006; 28:637-41. [PMID: 17033736 DOI: 10.1007/s00276-006-0151-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2006] [Accepted: 08/28/2006] [Indexed: 10/24/2022]
Abstract
We aimed to describe CT signs useful for differentiation of distal agenesis from distal or dorsal pancreas lipomatosis. Multidetector CT (MDCT) studies of five patients with distal pancreas agenesis (n = 2), distal lipomatosis (n = 1), distal short pancreas (n = 1), and distal pancreatectomy (n = 1) were retrospectively reviewed. Agenesis of dorsal pancreas can be diagnosed by the absence of body and tail of pancreas. In the absence of distal pancreas, distal pancreatic bed can be filled by stomach or intestine (dependent stomach or dependent intestine signs), which abut splenic vein. Same findings can be seen in patients with distal pancreatectomy, however, splenic vein is absent in these patients. In case of distal lipomatosis abundant fat tissue is observed anterior to splenic vein. Dependent stomach and/or dependent intestine signs on MDCT imaging can allow differentiation of distal pancreas agenesis from distal lipomatosis obviating further diagnostic studies.
Collapse
|
46
|
Wiberg ME. Pancreatic acinar atrophy in German shepherd dogs and rough-coated collies. Etiopathogenesis, diagnosis and treatment. A review. Vet Q 2004; 26:61-75. [PMID: 15230051 DOI: 10.1080/01652176.2004.9695169] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022] Open
Abstract
In pancreatic acinar atrophy (PAA) a selective destruction of digestive enzyme-producing acinar cells leads to maldigestion signs typical of exocrine pancreatic insufficiency (EPI). Although the clinical disease is well-known, the etiopathogenesis of PAA has been long remained obscure. German shepherd dogs and rough-coated Collies with PAA show similar genetic, clinical and pathological findings indicating a similar etiopathogenesis of the disease in these two breeds. In this review article the etiopathogenesis of PAA is discussed, including the current suggestion of autoimmune nature of the disease. The diagnostic methods for detection both early and end-stage exocrine pancreatic dysfunction are described, as well as the treatment options and prognosis.
Collapse
Affiliation(s)
- M E Wiberg
- Department of Clinical Veterinary Sciences, Faculty of Veterinary Medicine, Box 57, 00014 University of Helsinki, Finland.
| |
Collapse
|
47
|
Li M, Miyagawa JI, Moriwaki M, Yuan M, Yang Q, Kozawa J, Yamamoto K, Imagawa A, Iwahashi H, Tochino Y, Yamagata K, Matsuzawa Y. Analysis of expression profiles of islet-associated transcription and growth factors during beta-cell neogenesis from duct cells in partially duct-ligated mice. Pancreas 2003; 27:345-55. [PMID: 14576499 DOI: 10.1097/00006676-200311000-00013] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
INTRODUCTION Beta-cell neogenesis from pancreatic duct cells has been reported to occur in duct-ligated rat. Nevertheless, detailed process of this phenomenon has not been clarified. AIMS AND METHODOLOGY To clarify the mechanism of beta-cell neogenesis, a partial pancreatic duct ligation mouse model was created. Proliferation of duct cells, beta-cell neogenesis, and expression of transcription factors and differentiation/growth factors were studied by immunohistochemistry, cDNA array, and RT-PCR methods. RESULTS In the duct-ligated portion of the pancreas, newly formed islet-like cell clusters (ICCs) were observed arising from the ducts on day 7 and afterward. Transcription factors, such as pancreatic and duodenal homeobox gene-1 (PDX-1), paired box factor 6 (Pax6), islet1 and Nkx2.2-positive cells, and protein gene product 9.5 (PGP9.5) were also induced in duct lining cells. By cDNA microarray analysis, expression of insulin-like growth factor-1 (IGF-1) and transforming growth factor beta1 (TGF-beta1) were above control levels on day 5, and RT-PCR showed an increase from day 5 to day 28. IGF-1 and activin A-positive cells were detected in ducts. In addition, expression of betacellulin (BTC), heparin-binding epidermal growth factor-like growth factor (HB-EGF), and TGF-alpha were also increased from day 3 or 5. CONCLUSION These findings suggest that beta-cell or endocrine precursors are localized among duct lining cells. Induction of several islet cell-associated transcription factors and differentiation and/or growth factors may play important roles during beta-cell neogenesis in this model.
Collapse
Affiliation(s)
- Ming Li
- Department of Internal Medicine and Molecular Science, Graduate School of Medicine, Osaka University, Suita, Japan
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
48
|
Abstract
Pancreatic acinar atrophy (PAA) is by far the most common cause for the maldigestion signs of canine exocrine pancreatic insufficiency (EPI). The ability to diagnose PAA in the subclinical phase before the development of total acinar atrophy and manifestation of clinical signs has offered new possibilities to study the pathogenesis of the disease. Marked T-lymphocyte infiltration during the progression of acinar atrophy and the genetic susceptibility of the disease have been taken as a primary evidence of the autoimmune nature of the disease. The term autoimmune-mediated atrophic lymphocytic pancreatitis is preferred to describe pathologic findings. A single abnormally, low serum canine trypsin-like immunoreactivity (cTLI) concentration (< 2.5 mg/L), in dogs with typical maldigestion signs has been shown to be highly diagnostic for clinical EPI and is found in dogs with end-stage PAA. Repeatedly subnormal cTLI values (2.5-5.0 micrograms/L) in dogs with no clinical signs of EPI are valuable markers of subclinical EPI and highly suggestive for partial PAA. The primary treatment of EPI is supplementing each meal with pancreatic enzymes. The long-term treatment response for the nonenteric-coated enzyme supplements has been found to be good in half of these dogs, but the response varied considerably.
Collapse
Affiliation(s)
- Elias Westermarck
- Department of Clinical Veterinary Sciences, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 57, 00014 Helsinki, Finland.
| | | |
Collapse
|
49
|
Abstract
INTRODUCTION The mouse pancreas exhibits distinct atrophy of the exocrine tissue following pancreatic duct ligation. AIM To investigate changes of innervation in the whole pancreas after pancreatic duct ligation. METHODOLOGY The mouse pancreatic duct was ligated at 6 weeks of age. Pancreatic tissues were removed 7 days and 14 days after the ligation, fixed by perfusion and immersion with Zamboni solution, and embedded in gelatin. The whole organ was serially sectioned at a thickness of 100 microm, histochemically stained for cholinesterase, and observed by light microscopy. The number and volume of intrapancreatic ganglia, number of ganglion cells, and volume of each ganglion cell in the whole pancreas were quantitated. Some sections were analyzed using transmission electron microscopy after histochemically staining for cholinesterase. RESULTS In the normal pancreas, ganglia were often situated on the outer surface of the islets of Langerhans. Thick nerve bundles ran along the arteries and emanated thin nerve fibers that surrounded the arterioles. In the atrophied pancreas following pancreatic duct ligation, ganglia remained on the islets of Langerhans as in normal mice, while the nerve fibers appeared dense, bending and curling in a more complex manner. The thin nerves also crossed each other in a complex network. Using morphometry in the pancreas following pancreatic duct ligation, the total ganglion cell number was found to decrease from normal levels. The mean ganglion cell volume in the ligated pancreas was significantly smaller than that in normal mice. As observed by transmission electron microscopy, some ganglion cells in the ligated pancreas were negative for cholinesterase activity but were surrounded by positive staining around the surface. CONCLUSIONS These results suggest that the function of pancreatic ganglion cells changes with organ atrophy after pancreatic duct ligation.
Collapse
Affiliation(s)
- Keisuke Okamura
- Department of Surgical Oncology, Division of Cancer Medicine, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido Japan.
| | | | | | | | | |
Collapse
|
50
|
Takahashi S, Shinzato K, Nakamura S, Domon T, Yamamoto T, Wakita M. The roles of apoptosis and mitosis in atrophy of the rat sublingual gland. Tissue Cell 2003; 34:297-304. [PMID: 12270256 DOI: 10.1016/s0040816602000034] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The roles of apoptosis and mitosis of acinar and duct cells in the atrophy of the sublingual gland of rat induced by double duct ligation was investigated using immunohistochemistry for proliferating cell nuclear antigen (PCNA), terminal deoxynucleotidyl transferase (TdT)-mediated dUTP-digoxigenin nick end labeling (TUNEL), and transmission electron microscopy (TEM). Many PCNA-positive duct cells were observed 3 days after duct ligation, and the numbers decreased thereafter. At 3 and 5 days, several TUNEL-positive acinar cells were observed and typical apoptotic acinar cells were identified by TEM. Necrotic acinar cells were also observed ultrastructurally. After 7 days, there were few acini but many ducts, as well as many structures representing transition from acinus to duct. These observations demonstrate that acinar cell loss by apoptosis and duct cell proliferation by mitosis occur in atrophic sublingual glands as well as in other atrophic salivary glands. In addition, it appears that the transition from acinar to duct cell and the necrosis of acinar cells play important roles in the atrophy of the sublingual gland.
Collapse
Affiliation(s)
- S Takahashi
- Department of Oral Health Science, Hokkaido University Graduate School of Dental Medicine, Sapporo, Japan.
| | | | | | | | | | | |
Collapse
|