keyword
MENU ▼
Read by QxMD icon Read
search

Acinar cells

keyword
https://www.readbyqxmd.com/read/29776636/molecular-diagnostics-in-the-neoplasms-of-the-pancreas-liver-gallbladder-and-extrahepatic-biliary-tract-2018-update
#1
REVIEW
Lei Zhang, Martin H Bluth, Amarpreet Bhalla
Pancreatic neoplasms, including ductal adenocarcinoma, solid pseudopapillary neoplasm, pancreatic endocrine neoplasms, acinar cell carcinoma, and pancreatoblastoma, are associated with different genetic abnormalities. Hepatic adenomas with beta-catenin exon 3 mutation are associated with a high risk of malignancy. Hepatic adenoma with arginosuccinate synthetase 1 expression or sonic hedgehog mutations are associated with a risk of bleeding. Hepatocellular carcinoma and choangiocarcinoma display heterogeneity at both morphologic and molecular levels Cholangiocellular carcinoma is most commonly associated with IDH 1/2 mutations...
June 2018: Clinics in Laboratory Medicine
https://www.readbyqxmd.com/read/29771769/systemic-chemotherapy-for-advanced-rare-pancreatic-histotype-tumors-a-retrospective-multicenter-analysis
#2
Oronzo Brunetti, Giuseppe Aprile, Paolo Marchetti, Enrico Vasile, Andrea Casadei Gardini, Mario Scartozzi, Sandro Barni, Sara Delfanti, Fernando De Vita, Francesco Di Costanzo, Michele Milella, Chiara Alessandra Cella, Rossana Berardi, Ivana Cataldo, Aldo Scarpa, Debora Basile, Federica Mazzuca, Giusi Graziano, Antonella Argentiero, Daniele Santini, Michele Reni, Stefano Cascinu, Nicola Silvestris
OBJECTIVES: Two issues were put forth by clinicians in the management of the advanced stages of rare variants of pancreatic ductal adenocarcinoma and other exocrine histotypes with peculiar clinical and pathological features: Do chemotherapy regimens recommended in pancreatic ductal adenocarcinoma patients have a clinical activity in rare pancreatic tumors? Or should other chemotherapy combinations be considered in this subset of patients? METHODS: We conducted a multicenter retrospective study that collected data from 2005 to 2016 at 14 Italian cancer centers with the aim to evaluate tumor response and time to progression for first- and second-line and overall survival...
May 15, 2018: Pancreas
https://www.readbyqxmd.com/read/29770932/clinical-and-pathologic-characteristics-of-pulmonary-carcinoid-tumors-in-central-and-peripheral-locations
#3
George Papaxoinis, Angela Lamarca, Anne Marie Quinn, Wasat Mansoor, Daisuke Nonaka
Pulmonary carcinoid tumors occur in both central and peripheral locations, and some differences in clinico-pathological features have long been observed. We investigated a large number of resected carcinoid tumors with the aim to further define the characteristics of tumors from both locations. One hundred sixty-six resected carcinoid tumors of the lung were analyzed for a variety of clinical and pathologic features, including histology subtype, mitotic rate, Ki67 index, necrosis, invasive pattern, architectural pattern, cell morphology, sustentacular cells, neuroendocrine hyperplasia, and orthopedia homeobox protein (OTP) and TTF-1 immunohistochemical expressions...
May 16, 2018: Endocrine Pathology
https://www.readbyqxmd.com/read/29765551/functional-significance-of-co-occurring-mutations-in-pik3ca-and-map3k1-in-breast-cancer
#4
Alvaro Avivar-Valderas, Robert McEwen, Amir Taheri-Ghahfarokhi, Larissa S Carnevalli, Elizabeth L Hardaker, Marcello Maresca, Kevin Hudson, Elizabeth A Harrington, Francisco Cruzalegui
The PI3Kα signaling pathway is frequently hyper-activated in breast cancer (BrCa), as a result of mutations/amplifications in oncogenes (e.g. HER2 ), decreased function in tumor suppressors (e.g. PTEN ) or activating mutations in key components of the pathway. In particular, activating mutations of PIK3CA (~45%) are frequently found in luminal A BrCa samples. Genomic studies have uncovered inactivating mutations in MAP3K1 (13-20%) and MAP2K4 (~8%), two upstream kinases of the JNK apoptotic pathway in luminal A BrCa samples...
April 20, 2018: Oncotarget
https://www.readbyqxmd.com/read/29765014/steroid-receptor-coactivator-interacting-protein-sip-suppresses-myocardial-injury-caused-by-acute-pancreatitis
#5
Xin Chen, Bin Zhu
BACKGROUND Steroid receptor coactivator-interacting protein (SIP) inhibits the activation of nuclear factor-kappa B (NF-κB) by interacting with p65. The occurrence of acute pancreatitis (AP) is closely associated with pro-inflammatory response. The present study aimed to investigate the role of SIP on myocardial injury caused by AP. MATERIAL AND METHODS Rat pancreatic acinar tumor cell line AR42J cells were treated with caerulein to establish AP cell models. The levels of TNF-α, IL-6, cTnI, CK-MB, and LDH1 were detected by ELISA assay...
May 16, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29760956/bh4-domain-peptides-derived-from-bcl-2-bcl-xl-as-novel-tools-against-acute-pancreatitis
#6
Tim Vervliet, Julia V Gerasimenko, Pawel E Ferdek, Monika A Jakubowska, Ole H Petersen, Oleg V Gerasimenko, Geert Bultynck
Biliary acute pancreatitis (AP) is a serious condition, which currently has no specific treatment. Taurolithocholic acid 3-sulfate (TLC-S) is one of the most potent bile acids causing cytosolic Ca2+ overload in pancreatic acinar cells (PACs), which results in premature activation of digestive enzymes and necrosis, hallmarks of AP. The inositol 1,4,5-trisphosphate receptor (IP3 R) and the ryanodine receptor (RyR) play major roles in intracellular Ca2+ signaling. Inhibition of these endoplasmic reticulum-located channels suppresses TLC-S-induced Ca2+ release and necrosis, decreasing the severity of AP...
2018: Cell Death Discovery
https://www.readbyqxmd.com/read/29756386/kras-mutation-and-epithelial-macrophage-interplay-in-pancreatic-neoplastic-transformation
#7
Faraz Bishehsari, Lijuan Zhang, Usman Barlass, Nailliw Preite, Sanja Turturro, Matthew S Najor, Brandon B Shetuni, Janet P Zayas, Mahboobeh Mahdavinia, Abde M Abukhdeir, Ali Keshavarzian
Pancreatic ductal adenocarcinoma (PDA) is characterized by epithelial mutations in KRAS and prominent tumor-associated inflammation, including macrophage infiltration. But knowledge of early interactions between neoplastic epithelium and macrophages in PDA carcinogenesis is limited. Using a pancreatic organoid model, we found that the expression of mutant KRAS in organoids increased i) ductal to acinar gene expression ratios, ii) epithelial cells proliferation, and iii) colony formation capacity in vitro, and endowed pancreatic cells with the ability to generate neoplastic tumors in vivo...
May 14, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29754976/histopathological-changes-in-parotid-gland-following-submandibular-gland-failure-an-experimental-animal-study
#8
Yavuz Sultan Selim Yıldırım, Irfan Kaygusuz, Ibrahim Hanifi Ozercan, Hasan Cetiner, Oner Sakallioglu, Abdulvahap Akyigit, Sertac Duzer
INTRODUCTION: Submandibular glands are exposed to many effects due to diseases and therapeutic interventions. A study evaluating the effect of submandibular gland dysfunction on the parotid gland has not been presented in the literature. OBJECTIVE: The aim of this study was to evaluate the histopathological changes in the parotid gland following submandibular gland failure. METHODS: Three groups of seven randomly selected female New Zealand rabbits weighing 2500-3000g were studied...
April 24, 2018: Brazilian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/29752049/the-screening-and-electron-microscopy-observation-of-mammary-analogue-secretory-carcinoma-in-chinese
#9
Yi Zhong, Liu Liu, Bin Qi, Xiaoling Song, Linhan Shen, Hongwei Li
Mammary analogue secretory carcinoma of salivary gland (MASC) is a tumor with histopathologic and immunophenotypic features mimicking secretory carcinoma of the breast harboring the ETV6 split. The expression of mammaglobin, S-100, Ki-67, P63 and ETV6 split were detected in twelve cases of acinar cell carcinoma and fourteen cases of mammary analogue secretory carcinoma of salivary gland by immunohistochemistry and fluorescence in situ hybridization respectively. The expression of ETV6 gene split was detected in fourteen mammary analogue secretory carcinomas of salivary gland with positive expression of mammaglobin...
October 19, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29749030/a-new-therapeutic-approach-for-type-1-diabetes-rationale-for-gnbac1-an-anti-herv-w-env-monoclonal-antibody
#10
REVIEW
Francois Curtin, Corinne Bernard, Sandrine Levet, Hervé Perron, Hervé Porchet, Julie Médina, Sam Malpass, David Lloyd, Richard Simpson
We describe a newly identified therapeutic target for type 1 diabetes: an envelope protein of endogenous retroviral origin called Human Endogenous Retrovirus W Envelope (HERV-W-Env). HERV-W-Env was found to be detected in the blood of around 60% of type 1 diabetes (T1D) patients and is expressed in acinar pancreatic cells of 75% of T1D patients at post-mortem examination. Preclinical experiments showed that this protein displays direct cytotoxicity on human β-islet cells. In vivo HERV-W-Env impairs the insulin and glucose metabolism in transgenic mice expressing HERV-W-Env...
May 10, 2018: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/29738363/pancreatic-lipomatous-hamartoma-a-hitherto-unrecognized-variant
#11
Mariko Tanaka, Tetsuo Ushiku, Masako Ikemura, Yutaka Takazawa, Toru Igari, Michio Shimizu, Hiroshi Yamaguchi, Noriyoshi Fukushima, Kei Sakuma, Junichi Arita, Yoshihiro Sakamoto, Kiyoshi Hasegawa, Takeyuki Watadani, Yousuke Nakai, Kazuhiko Koike, Masashi Fukayama
Pancreatic masses consisting of lipomatous components clinically include lipoma, liposarcoma, lipomatous pseudohypertrophy of the pancreas, fat-containing neoplasms such as perivascular epithelioid cell tumor, and malignant neoplasm with lipoid degeneration. We present pancreatic lipomatous hamartoma, which has not been reported hitherto. A solid pancreatic mass was detected from a computed tomographic scan check-up in each of 3 cases of Japanese men. Macroscopically, well-demarcated solid lipomatous masses were detected at the uncus, body, and tail of the pancreas, respectively...
May 4, 2018: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29736167/mechanisms-and-management-of-acute-pancreatitis
#12
REVIEW
Ari Garber, Catherine Frakes, Zubin Arora, Prabhleen Chahal
Acute pancreatitis represents a disorder characterized by acute necroinflammatory changes of the pancreas and is histologically characterized by acinar cell destruction. Diagnosed clinically with the Revised Atlanta Criteria, and with alcohol and cholelithiasis/choledocholithiasis as the two most prominent antecedents, acute pancreatitis ranks first amongst gastrointestinal diagnoses requiring admission and 21st amongst all diagnoses requiring hospitalization with estimated costs approximating 2.6 billion dollars annually...
2018: Gastroenterology Research and Practice
https://www.readbyqxmd.com/read/29733580/leucine-affects-%C3%AE-amylase-synthesis-through-pi3k-akt-mtor-signaling-pathways-in-pancreatic-acinar-cells-of-dairy-calves
#13
Long Guo, Ziqi Liang, Chen Zheng, Baolong Liu, Qingyan Yin, Yangchun Cao, J H Yao
Dietary nutrients utilization, particularly starch, is potentially limited by digestion in dairy cow small intestine because of shortage of α-amylase. Leucine acts as an effective signal molecular in the mTOR signaling pathway, which regulats a series of biological processes, especially protein synthesis. It has been reported that leucine could affect α-amylase synthesis and secretion in ruminant pancreas, but mechanisms have not been elaborated. In this study, pancreatic acinar (PA) cells were used as a model to determine the cellular signal of leucine influence on α-amylase synthesis...
May 7, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29725970/predominant-improvement-of-alpha-cell-function-after-steroid-therapy-in-a-patient-with-autoimmune-pancreatitis-case-report
#14
Ken Takeshima, Hiroyuki Ariyasu, Hiroshi Iwakura, Shintaro Kawai, Shinsuke Uraki, Hidefumi Inaba, Machi Furuta, Kenji Warigaya, Shin-Ichi Murata, Takashi Akamizu
INTRODUCTION: Autoimmune pancreatitis (AIP) is a subset of inflammatory pancreatic disease, responsive to corticosteroid therapy. It is prone to being affected by diabetes mellitus, but the effectiveness of steroid therapy on pancreatic endocrine function is still controversial. We present a case of AIP, focusing on pancreatic endocrine function after steroid therapy. CASE REPORT: The patient was referred to our hospital with exacerbation of diabetic control and pancreatic swelling...
May 3, 2018: Diabetes Therapy: Research, Treatment and Education of Diabetes and related Disorders
https://www.readbyqxmd.com/read/29721608/c-myc-amplification-and-c-myc-protein-expression-in-pancreatic-acinar-cell-carcinomas-new-insights-into-the-molecular-signature-of-these-rare-cancers
#15
Stefano La Rosa, Barbara Bernasconi, Alessandro Vanoli, Amedeo Sciarra, Kenji Notohara, Luca Albarello, Selenia Casnedi, Paola Billo, Lizhi Zhang, Maria Grazia Tibiletti, Fausto Sessa
The molecular alterations of pancreatic acinar cell carcinomas (ACCs) and mixed acinar-neuroendocrine carcinomas (MANECs) are not completely understood, and the possible role of c-MYC amplification in tumor development, progression, and prognosis is not known. We have investigated c-MYC gene amplification in a series of 35 ACCs and 4 MANECs to evaluate its frequency and a possible prognostic role. Gene amplification was investigated using interphasic fluorescence in situ hybridization analysis simultaneously hybridizing c-MYC and the centromere of chromosome 8 probes...
May 2, 2018: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/29719936/induced-ptf1a-expression-in-pancreatic-ductal-adenocarcinoma-cellsactivates-acinar-gene-networks-reduces-tumorigenic-properties-and-sensitizes-cells-to-gemcitabine-treatment
#16
Brad L Jakubison, Patrick G Schweickert, Sarah E Moser, Yi Yang, Hongyu Gao, Kathleen Scully, Pamela Itkin-Ansari, Yunlong Liu, Stephen F Konieczny
Pancreatic acinar cells synthesize, package, and secrete digestive enzymes into the duodenum to aid in nutrient absorption and meet metabolic demands. When exposed to cellular stresses and insults acinar cells undergo a dedifferentiation process termed acinar-ductal metaplasia (ADM). ADM lesions with oncogenic mutations eventually give rise to pancreatic ductal adenocarcinoma (PDAC). In healthy pancreata, the basic helix-loop-helix (bHLH) factors MIST1 and PTF1a coordinate an acinar-specific transcription network that maintains the highly developed differentiation status of the cells, protecting the pancreas from undergoing a transformative process...
May 2, 2018: Molecular Oncology
https://www.readbyqxmd.com/read/29719535/lactose-induces-phenotypic-and-functional-changes-of-neutrophils-and-macrophages-to-alleviate-acute-pancreatitis-in-mice
#17
Li-Long Pan, Yuan-Yuan Deng, Ruxing Wang, Chengfei Wu, Jiahong Li, Wenying Niu, Qin Yang, Madhav Bhatia, Gudmundur H Gudmundsson, Birgitta Agerberth, Julien Diana, Jia Sun
Acute pancreatitis (AP) is one common clinical acute abdominal disease, for which specific pharmacological or nutritional therapies remain elusive. Lactose, a macronutrient and an inducer of host innate immune responses, possesses immune modulatory functions. The current study aimed to investigate potential modulatory effects of lactose and the interplay between the nutrient and pancreatic immunity during experimentally induced AP in mice. We found that either prophylactic or therapeutic treatment of lactose time-dependently reduced the severity of AP, as evidenced by reduced pancreatic edema, serum amylase levels, and pancreatic myeloperoxidase activities, as well as by histological examination of pancreatic damage...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29717784/intracellular-rupture-exocytosis-and-actin-interaction-of-endocytic-vacuoles-in-pancreatic-acinar-cells-initiating-events-in-acute-pancreatitis
#18
Michael Chvanov, Francesca De Faveri, Danielle Moore, Mark W Sherwood, Muhammad Awais, Svetlana Voronina, Robert Sutton, David N Criddle, Lee Haynes, Alexei V Tepikin
KEY POINTS: Giant trypsin-containing endocytic vacuoles are formed in pancreatic acinar cells stimulated with inducers of acute pancreatitis. F-actin envelops endocytic vacuoles and regulates their properties. Endocytic vacuoles can rupture and release their content into the cytosol of the acinar cells. Endocytic vacuoles can fuse with the plasma membrane of acinar cells and exocytose their content. ABSTRACT: Intrapancreatic activation of trypsinogen is an early event in and hallmark of the development of acute pancreatitis...
May 2, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29713665/proteomic-study-defines-how-alcohol-alters-er-structure-and-redox-proteome-to-trigger-er-stress-and-acinar-cell-pathology-in-pancreatitis
#19
EDITORIAL
Michael J Grey
No abstract text is available yet for this article.
2018: Cellular and Molecular Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/29712913/piezo1-is-a-mechanically-activated-ion-channel-and-mediates-pressure-induced-pancreatitis
#20
Joelle M-J Romac, Rafiq A Shahid, Sandip M Swain, Steven R Vigna, Rodger A Liddle
Merely touching the pancreas can lead to premature zymogen activation and pancreatitis but the mechanism is not completely understood. Here we demonstrate that pancreatic acinar cells express the mechanoreceptor Piezo1 and application of pressure within the gland produces pancreatitis. To determine if this effect is through Piezo1 activation, we induce pancreatitis by intrapancreatic duct instillation of the Piezo1 agonist Yoda1. Pancreatitis induced by pressure within the gland is prevented by a Piezo1 antagonist...
April 30, 2018: Nature Communications
keyword
keyword
98307
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"