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BMJ Case Reports Oct 2020A 60-year-old woman was investigated for abdominal pain and increasing asthenia. Abdominal CT revealed a 25 mm hypodense cystic lesion in the tail of the pancreas. MRI...
A 60-year-old woman was investigated for abdominal pain and increasing asthenia. Abdominal CT revealed a 25 mm hypodense cystic lesion in the tail of the pancreas. MRI showed a multiloculated cystic lesion, T1-hypointense and T2-hyperintense lesion, without wall enhancement. Endoscopic ultrasound detected a 25 mm multi-loculated cystic lesion, with regular margin and without pancreatic duct communication. Diagnosis of pancreatic mucinous cystadenoma was discussed and the patient was referred to surgery. She underwent distal pancreatectomy with spleen preservation. Pathological examination revealed the diagnosis of pancreatic mesothelial cyst. Histologically, the cyst was multiloculated, lined by cuboidal epithelium, ovoid nuclei and amphophilic cytoplasm, without mucin deposition or cytological atypia. Immunohistochemistry examination revealed positive staining for cytokeratin 5/6, vimentin and calretinin. At 1-year follow-up, she is in her usual health, without any symptoms.
Topics: Cystadenoma, Mucinous; Diagnosis, Differential; Endosonography; Epithelium; Female; Humans; Immunohistochemistry; Magnetic Resonance Imaging; Middle Aged; Pancreas; Pancreatectomy; Pancreatic Cyst; Pancreatic Neoplasms; Tomography, X-Ray Computed; Treatment Outcome
PubMed: 33028569
DOI: 10.1136/bcr-2020-236255 -
Clinical and Experimental Immunology Dec 2019In recent years, there have been exciting new insights into pathogenesis of type 1 diabetes in a number of areas of immunology. In this edition, a collection of four...
In recent years, there have been exciting new insights into pathogenesis of type 1 diabetes in a number of areas of immunology. In this edition, a collection of four review articles are presented, which encompass new findings presented at the Immunology of Diabetes Society meeting in London 2018. The articles are focused particularly in 4 related areas of investigation, which include autoantibodies in type 1 diabetes, new autoantigenic targets for CD4 T cells, trafficking of immune cells to the pancreas and islet-immune interactions in the pancreas.
Topics: Autoantibodies; Autoantigens; CD4-Positive T-Lymphocytes; Diabetes Mellitus, Type 1; Humans; Islets of Langerhans; Pancreas
PubMed: 31729755
DOI: 10.1111/cei.13396 -
Journal of Visceral Surgery Oct 2019The circumportal pancreas (CPP) is a normal though rare anatomical variant of the pancreas resulting from fusion of ventral and dorsal pancreatic buds during...
The circumportal pancreas (CPP) is a normal though rare anatomical variant of the pancreas resulting from fusion of ventral and dorsal pancreatic buds during embryogenesis. Preoperative imaging in a 69-year-old man displayed the presence of a CPP completely encasing the portal vein. For pancreatic resection, missing a CPP is associated with a higher risk of postoperative complications.
Topics: Adenocarcinoma; Aged; Humans; Magnetic Resonance Imaging; Male; Pancreas; Pancreatectomy; Pancreatic Neoplasms; Portal Vein
PubMed: 30773440
DOI: 10.1016/j.jviscsurg.2019.02.001 -
Diabetologia Jul 2022The central and peripheral nervous systems play critical roles in regulating pancreatic islet function and glucose metabolism. Over the last century, in vitro and in... (Review)
Review
The central and peripheral nervous systems play critical roles in regulating pancreatic islet function and glucose metabolism. Over the last century, in vitro and in vivo studies along with examination of human pancreas samples have revealed the structure of islet innervation, investigated the contribution of sympathetic, parasympathetic and sensory neural pathways to glucose control, and begun to determine how the structure and function of pancreatic nerves are disrupted in metabolic disease. Now, state-of-the art techniques such as 3D imaging of pancreatic innervation and targeted in vivo neuromodulation provide further insights into the anatomy and physiological roles of islet innervation. Here, we provide a summary of the published work on the anatomy of pancreatic islet innervation, its roles, and evidence for disordered islet innervation in metabolic disease. Finally, we discuss the possibilities offered by new technologies to increase our knowledge of islet innervation and its contributions to metabolic regulation.
Topics: Humans; Islets of Langerhans; Islets of Langerhans Transplantation; Pancreas
PubMed: 35348820
DOI: 10.1007/s00125-022-05691-9 -
Frontiers in Endocrinology 2021At the time of Ivan Pavlov, pancreatic innervation was studied by looking at pancreas secretions in response to electrical stimulation of nerves. Nowadays we have ways... (Review)
Review
At the time of Ivan Pavlov, pancreatic innervation was studied by looking at pancreas secretions in response to electrical stimulation of nerves. Nowadays we have ways to visualize neuronal activity in real time thanks to advances in fluorescent reporters and imaging techniques. We also have very precise optogenetic and pharmacogenetic approaches that allow neuronal manipulations in a very specific manner. These technological advances have been extensively employed for studying the central nervous system and are just beginning to be incorporated for studying visceral innervation. Pancreatic innervation is complex, and the role it plays in physiology and pathophysiology of the organ is still not fully understood. In this review we highlight anatomical aspects of pancreatic innervation, techniques for pancreatic neuronal labeling, and approaches for imaging pancreatic innervation and .
Topics: Animals; Humans; Neurons; Optical Imaging; Pancreas
PubMed: 33986728
DOI: 10.3389/fendo.2021.663022 -
Medicina 2021
Topics: Humans; Pancreas; Pancreatic Neoplasms; Panniculitis
PubMed: 34633973
DOI: No ID Found -
Current Diabetes Reports Nov 2020Human pancreas-on-a-chip (PoC) technology is quickly advancing as a platform for complex in vitro modeling of islet physiology. This review summarizes the current... (Review)
Review
PURPOSE OF REVIEW
Human pancreas-on-a-chip (PoC) technology is quickly advancing as a platform for complex in vitro modeling of islet physiology. This review summarizes the current progress and evaluates the possibility of using this technology for clinical islet transplantation.
RECENT FINDINGS
PoC microfluidic platforms have mainly shown proof of principle for long-term culturing of islets to study islet function in a standardized format. Advancement in microfluidic design by using imaging-compatible biomaterials and biosensor technology might provide a novel future tool for predicting islet transplantation outcome. Progress in combining islets with other tissue types gives a possibility to study diabetic interventions in a minimal equivalent in vitro environment. Although the field of PoC is still in its infancy, considerable progress in the development of functional systems has brought the technology on the verge of a general applicable tool that may be used to study islet quality and to replace animal testing in the development of diabetes interventions.
Topics: Animals; Diabetes Mellitus, Type 1; Humans; Islets of Langerhans; Islets of Langerhans Transplantation; Lab-On-A-Chip Devices; Pancreas; Technology
PubMed: 33206261
DOI: 10.1007/s11892-020-01357-1 -
International Journal of Molecular... Feb 2023In recent years, there has been a significant increase in age-related diseases due to the improvement in life expectancy worldwide. The pancreas undergoes various... (Review)
Review
In recent years, there has been a significant increase in age-related diseases due to the improvement in life expectancy worldwide. The pancreas undergoes various morphological and pathological changes with aging, such as pancreatic atrophy, fatty degeneration, fibrosis, inflammatory cell infiltration, and exocrine pancreatic metaplasia. Meanwhile, these may predispose the individuals to aging-related diseases, such as diabetes, dyspepsia, pancreatic ductal adenocarcinoma, and pancreatitis, as the endocrine and exocrine functions of the pancreas are significantly affected by aging. Pancreatic senescence is associated with various underlying factors including genetic damage, DNA methylation, endoplasmic reticulum (ER) stress, mitochondrial dysfunction, and inflammation. This paper reviews the alternations of morphologies and functions in the aging pancreas, especially β-cells, closely related to insulin secretion. Finally, we summarize the mechanisms of pancreatic senescence to provide potential targets for treating pancreatic aging-related diseases.
Topics: Humans; Diabetes Mellitus; Pancreas; Pancreas, Exocrine; Pancreatic Diseases; Pancreatic Hormones; Pancreatic Neoplasms; Aging
PubMed: 36834922
DOI: 10.3390/ijms24043513 -
Diabetes Oct 2021β-Cells in the islet of Langerhans have a central role in maintaining energy homeostasis. Understanding the physiology of β-cells and other islet cells requires a deep... (Review)
Review
β-Cells in the islet of Langerhans have a central role in maintaining energy homeostasis. Understanding the physiology of β-cells and other islet cells requires a deep understanding of their structural and functional organization, their interaction with vessels and nerves, the layout of paracrine interactions, and the relationship between subcellular compartments and protein complexes inside each cell. These elements are not static; they are dynamic and exert their biological actions at different scales of time. Therefore, scientists must be able to investigate (and visualize) short- and long-lived events within the pancreas and β-cells. Current technological advances in microscopy are able to bridge multiple spatiotemporal scales in biology to reveal the complexity and heterogeneity of β-cell biology. Here, I briefly discuss the historical discoveries that leveraged microscopes to establish the basis of β-cell anatomy and structure, the current imaging platforms that allow the study of islet and β-cell biology at multiple scales of resolution, and their challenges and implications. Lastly, I outline how the remarkable longevity of structural elements at different scales in biology, from molecules to cells to multicellular structures, could represent a previously unrecognized organizational pattern in developing and adult β-cells and pancreas biology.
Topics: Animals; Cell Self Renewal; Cell Survival; Homeostasis; Humans; Insulin-Secreting Cells; Islets of Langerhans; Pancreas; Time Factors
PubMed: 34593534
DOI: 10.2337/dbi21-0008 -
Diabetologia Oct 2020Improving our understanding of mammalian pancreas development is crucial for the development of more effective cellular therapies for diabetes. Most of what we know... (Review)
Review
Improving our understanding of mammalian pancreas development is crucial for the development of more effective cellular therapies for diabetes. Most of what we know about mammalian pancreas development stems from mouse genetics. We have learnt that a unique set of transcription factors controls endocrine and exocrine cell differentiation. Transgenic mouse models have been instrumental in studying the function of these transcription factors. Mouse and human pancreas development are very similar in many respects, but the devil is in the detail. To unravel human pancreas development in greater detail, in vitro cellular models (including directed differentiation of stem cells, human beta cell lines and human pancreatic organoids) are used; however, in vivo validation of these results is still needed. The current best 'model' for studying human pancreas development are individuals with monogenic forms of diabetes. In this review, we discuss mammalian pancreas development, highlight some discrepancies between mouse and human, and discuss selected transcription factors that, when mutated, cause permanent neonatal diabetes. Graphical abstract.
Topics: Animals; Cell Line; Diabetes Mellitus; Gene Expression Regulation, Developmental; Humans; In Vitro Techniques; Insulin-Secreting Cells; Mice; Organoids; Pancreas; Pluripotent Stem Cells; Transcription Factors
PubMed: 32894307
DOI: 10.1007/s00125-020-05161-0