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Pancreatic acinar cells

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https://www.readbyqxmd.com/read/29207022/role-of-the-c-jun-n-terminal-kinase-signaling-pathway-in-the-activation-of-trypsinogen-in-rat-pancreatic-acinar-cells
#1
Zhengpeng Yang, Weiguang Yang, Ming Lu, Zhituo Li, Xin Qiao, Bei Sun, Weihui Zhang, Dongbo Xue
Bile acid causes trypsinogen activation in pancreatic acinar cells through a complex process. Additional research is required to further elucidate which signaling pathways affect trypsinogen activation when activated. the changes in the whole‑genome expression profile of AR42J cells under the effect of taurolithocholic acid 3‑sulfate (TLC‑S) were investigated. Furthermore, gene groups that may play a regulatory role were analyzed using the modular approach of biological networks. The aim of the present study was to improve our understanding of the changes in TLC‑S‑stimulated AR42J cells through a genetic functional modular analysis...
November 17, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29200128/tro40303-ameliorates-alcohol-induced-pancreatitis-through-reduction-of-fatty-acid-ethyl-ester-induced-mitochondrial-injury-and-necrotic-cell-death
#2
Muhammad Ahsan Javed, Li Wen, Muhammad Awais, Diane Latawiec, Wei Huang, Michael Chvanov, Sophie Schaller, Thierry Bordet, Magali Michaud, Rebecca Pruss, Alexei Tepikin, David Criddle, Robert Sutton
OBJECTIVES: Mitochondrial permeability transition pore inhibition is a promising approach to treat acute pancreatitis (AP). We sought to determine (i) the effects of the mitochondrial permeability transition pore inhibitor 3,5-seco-4-nor-cholestan-5-one oxime-3-ol (TRO40303) on murine and human pancreatic acinar cell (PAC) injury induced by fatty acid ethyl esters (FAEEs) or taurolithocholic acid-3-sulfate and (ii) TRO40303 pharmacokinetics and efficacy in experimental alcoholic AP (FAEE-AP)...
December 2, 2017: Pancreas
https://www.readbyqxmd.com/read/29196469/pancreatitis-induced-p62-accumulation-promotes-pancreatic-cancer
#3
(no author information available yet)
Defective autophagy and stress in acinar cells drives the progression of PanIN1 lesions to PDAC.
December 1, 2017: Cancer Discovery
https://www.readbyqxmd.com/read/29191273/rare-tumors-and-lesions-of-the-pancreas
#4
REVIEW
John A Stauffer, Horacio J Asbun
There are a few entities that account for most solid and cystic masses of the pancreas. The pancreas harbors a wide array of diseases, including adenocarcinoma, and its variants, such as anaplastic and adenosquamous carcinoma. Other neoplasms include acinar cell carcinoma, solid pseudopapillary tumor, and sarcomas. Benign lesions include hamartomas, hemangiomas, lymphangioma, and plasmacytoma. Isolated metastases include renal cell carcinoma, melanoma, and other carcinomas. Benign inflammatory conditions, such as autoimmune pancreatitis and groove pancreatitis can also mimic solid neoplasms of the pancreas...
February 2018: Surgical Clinics of North America
https://www.readbyqxmd.com/read/29182014/emodin-attenuates-cell-injury-and-inflammation-in-pancreatic-acinar-ar42j-cells
#5
Jia-Yu Zhao, Jia-Qi Wang, Li Wu, Feng Zhang, Zhi-Peng Chen, Wei-Dong Li, Hao Cai, Xiao Liu
The study was intended to investigate the protective effects of emodin against cell injury and inflammation in AR42J cells. We determined trypsin and lipase activity, intracellular ROS and MMP using specific assay kits. The related protein expression and TNF-α and IL-6 in the medium were assayed by Western blot and ELISA kits. Results showed that emodin could protect AR42J cells against cell injury caused by cerulein and lipopolysaccharide which were possibly associated with inhibition of mitochondrial damage, ROS production, and then significantly inhibited ROS-mediated pathway, and ameliorated pancreatic cells injury by depleting the levels of inflammatory cytokines...
November 28, 2017: Journal of Asian Natural Products Research
https://www.readbyqxmd.com/read/29181837/expression-of-liver-x-receptors-in-normal-and-refractory-carcinoma-tissues-of-the-human-lung-and-pancreas
#6
Korehito Kashiwagi, Mai Yanagida, Daiki Matsui, Mizuko Tanaka, Kotaro Sugimoto, Honglei Chen, Naoki Ichikawa-Tomikawa, Shigeru Marubashi, Hiroyuki Suzuki, Hideki Chiba
Liver X receptors (LXRs) participate not only in maintaining cholesterol homeostasis but also in controlling cellular growth in many types of normal and tumor cells. We previously reported that LXRα was aberrantly expressed in human oral squamous cell carcinoma (HOSCC) tissues and cell lines, and that LXR stimulation led to significant reduction of proliferation of HOSCC cells via accelerating cholesterol efflux. Since LXRs and downstream proteins involved in cholesterol metabolism could be also applied as therapeutic targets in small cell lung carcinoma (SCLC) and pancreatic ductal adenocarcinoma (PDAC), we herein analyzed the distribution of LXR proteins in these refractory cancers as well as in normal human lung and pancreatic tissues...
November 28, 2017: Histology and Histopathology
https://www.readbyqxmd.com/read/29180572/the-atpase-activity-of-asna1-trc40-is-required-for-pancreatic-progenitor-cell-survival
#7
Stefan Norlin, Vishal Parekh, Helena Edlund
Asna1, also known as TRC40, is implicated in delivery of tail anchored (TA) proteins into the ER, in vesicle-mediated transport, and in chaperoning unfolded proteins during oxidative stress/ATP depletion. We recently showed that Asna1 inactivation in β-cells resulted in impaired retrograde transport, ER stress and diabetes in mice. Here we show that Asna1 inactivation in pancreatic progenitor cells leads to redistribution of the Golgi TA SNAREs Syntaxin-5 and Syntaxin-6, Golgi fragmentation, and accumulation of cytosolic p62+ puncta...
November 27, 2017: Development
https://www.readbyqxmd.com/read/29177779/ethanolic-extract-of-fenugreek-seeds-moderates-dimethoate-induced-pancreatic-damage-in-male-rats
#8
Dalia I A Mesallam, Omaima I Abdel Hamid, Nahla E Ibrahem
Dimethoate is a widely used organophosphate insecticide known to be toxic to the pancreas. The aim of this study is to detect the possible protective effects of the fenugreek seed ethanolic extract on the biochemical, histological, and ultra-structural abnormalities induced by dimethoate chronic exposure in the pancreas of adult male rats. The study was conducted on 50 adult male albino rats that were divided equally into 5 groups: (group I) negative control, (group II) vehicle control group, (group III) fenugreek-treated group that was given 400 mg/kg ethanolic fenugreek seed extract once daily, (group IV) dimethoate group received 20 mg/kg/day dimethoate, and (group V) dimethoate- + fenugreek-treated group received a combination of dimethoate and fenugreek in the same previous doses...
November 25, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29167188/severe-panniculitis-and-polyarthritis-caused-by-acinar-cell-carcinoma-arising-from-an-ectopic-pancreas
#9
Marc Plier, Patrick Durez, Mina Komuta, Alexandros Raptis
The pancreatitis, panniculitis and polyarthritis (PPP) syndrome is a rare condition caused by pancreatic diseases, such as acute or chronic pancreatitis or pancreatic carcinoma. We report the first case of PPP syndrome caused by metastatic acinar cell carcinoma from an ectopic pancreas. The symptoms were successfully managed by the treatment of the metastatic carcinoma. Pancreatic cytosteatonecrosis should be always considered in a patient who is showing symptoms of panniculitis and polyarthritis.
November 21, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29167114/exocrine-pancreas-glutamate-secretion-help-to-sustain-enterocyte-nutritional-needs-under-protein-restriction
#10
Selene Araya, Evelyne Kuster, Dino Gluch, Luca Mariotta, Christian Lutz, Theresia V Reding, Rolf Graf, François Verrey, Simone M R Camargo
Glutamine (Gln) is the most concentrated amino acid in blood and considered conditionally essential. Its requirement is increased during physiological stress, such as malnutrition or illness, despite its production by muscle and other organs. In the malnourished state Gln has been suggested to have a trophic effect on the exocrine pancreas and small intestine. However, the Gln transport capacity, the functional relationship of these two organs and the potential role of the Gln-glutamate (Glu) cycle are unknown...
November 22, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/29163548/emodin-alleviates-sodium-taurocholate-induced-pancreatic-acinar-cell-injury-via-microrna-30a-5p-mediated-inhibition-of-high-temperature-requirement-a-transforming-growth-factor-beta-1-inflammatory-signaling
#11
Hong Xiang, Xufeng Tao, Shilin Xia, Jialin Qu, Huiyi Song, Jianjun Liu, Dong Shang
Pancreatitis is an inflammatory disease that is responsible for substantial morbidity and mortality, and it can induce pancreatic necrosis that starts within pancreatic acinar cells in severe cases. Emodin, a pleiotropic natural product isolated from the Chinese herb Rheum palmatum L., has effective anti-inflammatory activities. In this paper, we investigated the protective effects and molecular mechanism of emodin against sodium taurocholate (STC)-induced pancreatic acinar cells injury in vitro and in vivo; and the results showed that emodin could significantly alleviate STC-induced pancreatic acinar cells injury through decreasing trypsin, amylase and the release of inflammatory factors (tumor necrosis factor alpha, interleukin-1β, and interleukin-6)...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29158927/liver-metastases-in-pancreatic-acinar-cell-carcinoma-treated-with-selective-internal-radiation-therapy-with-y-90-resin-microspheres
#12
Felipe Nasser, Joaquim Maurício Motta Leal Filho, Breno Boueri Affonso, Francisco Leonardo Galastri, Rafael Noronha Cavalcante, Diego Lima Nava Martins, Vanderlei Segatelli, Lilian Yuri Itaya Yamaga, Rene Claudio Gansl, Bernardino Tranchesi Junior, Antônio Luiz de Vasconcellos Macedo
Background: Pancreatic acinar cell carcinoma (PACC) is a rare tumor. Surgical resection is the treatment of choice when feasible, but there are no clear recommendations for patients with advanced disease. Liver-directed therapy with Y-90 selective internal radiation therapy (SIRT) has been used to treat hepatic metastases from pancreatic tumors. We describe a case of PACC liver metastases treated with SIRT. Case Report: 59-year-old man was admitted with an infiltrative, solid lesion in pancreatic tail diagnosed as PACC...
2017: Case Reports in Hepatology
https://www.readbyqxmd.com/read/29155449/baicalein-inhibits-acinar-to-ductal-metaplasia-of-pancreatic-acinal-cell-ar42j-via-improving-the-inflammatory-microenvironment
#13
Wei-Ling Pu, Ying-Ying Luo, Ru-Yu Bai, Ao-Wei Guo, Kun Zhou, Yun-Sha Zhang, Lin Miao, Curzio Rüegg, Micheal O Hottiger, Xiu-Mei Gao, Li-Kang Sun
Pancreatic ductal adenocarcinoma (PDAC) is one of the most aggressive cancers. Recent research has demonstrated that chronic pancreatitis (CP) is associated with an increased risk of PDAC, partly due to acinar-to-ductal metaplasia (ADM). Baicalein has been shown to exert anti-inflammatory and anti-tumor effects for CP or PDAC, respectively. The aim of our study was to investigate the effect of baicalein, and the putative underlying mechanism, on inflammatory cytokines-induced ADM of rat pancreatic acinar cell line AR42J...
November 20, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29153842/stress-activated-nrf2-mdm2-cascade-controls-neoplastic-progression-in-pancreas
#14
Jelena Todoric, Laura Antonucci, Giuseppe Di Caro, Ning Li, Xuefeng Wu, Nikki K Lytle, Debanjan Dhar, Sourav Banerjee, Johan B Fagman, Cecille D Browne, Atsushi Umemura, Mark A Valasek, Hannes Kessler, David Tarin, Michael Goggins, Tannishtha Reya, Maria Diaz-Meco, Jorge Moscat, Michael Karin
Despite expression of oncogenic KRAS, premalignant pancreatic intraepithelial neoplasia 1 (PanIN1) lesions rarely become fully malignant pancreatic ductal adenocarcinoma (PDAC). The molecular mechanisms through which established risk factors, such as chronic pancreatitis, acinar cell damage, and/or defective autophagy increase the likelihood of PDAC development are poorly understood. We show that accumulation of the autophagy substrate p62/SQSTM1 in stressed Kras(G12D) acinar cells is associated with PDAC development and maintenance of malignancy in human cells and mice...
November 7, 2017: Cancer Cell
https://www.readbyqxmd.com/read/29148265/resveratrol-ameliorates-the-severity-of-fibrogenesis-in-mice-with-experimental-chronic-pancreatitis
#15
Yixuan Xia, Hai-Tao Xiao, Kanglun Liu, Hong-Jie Zhang, Siu Wai Tsang
SCOPE: Resveratrol is generally considered beneficial to health-span and longevity since this dietary stilbenoid has been scrutinized for its activating property on the "rescue gene" sirtuin-1 that promotes cellular survival under stress. In addition to its antiaging property, our previous in vitro studies revealed that resveratrol notably inhibited the production of extracellular matrix (ECM) proteins in pancreatic stellate cells (PSCs), the classic effector cells against pancreatic injury...
November 16, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/29138810/angiotensin-converting-enzyme-2-angiotensin-1-7-mas-axis-prevents-pancreatic-acinar-cell-inflammatory-response-via-inhibition-of-the-p38-mitogen-activated-protein-kinase-nuclear-factor-%C3%AE%C2%BAb-pathway
#16
Xiaozheng Yu, Lijian Cui, Fei Hou, Xiaoya Liu, Yan Wang, Yan Wen, Cheng Chi, Chunyun Li, Ruixia Liu, Chenghong Yin
The aim of the present study was to investigate the role of the angiotensin-converting enzyme (ACE)2-angiotensin‑(Ang)-(1-7)-Mas axis in the pathogenesis of pancreatitis and the association between this axis and the p38 mitogen-activated protein kinase (p38 MAPK)/nuclear factor (NF-κB) signaling pathway in pancreatic acinar cells. Mouse pancreatic acinar cancer (MPC-83) cells were stimulated with 10 nM caerulein (CAE) to create an in vitro model of acute pancreatitis, and collected for analysis at 2, 6, 12, 24 and 48 h post stimulation...
November 13, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29137060/a-case-report-of-mixed-acinar-endocrine-carcinoma-of-the-pancreas-treated-with-s-1-chemotherapy-does-it-work-or-induce-endocrine-differentiation
#17
Masataka Yokode, Ryosuke Itai, Yukimasa Yamashita, Yoh Zen
RATIONALE: Acinar cell carcinomas (ACCs) and mixed acinar-endocrine carcinomas (MAECs) of the pancreas are rare, accounting for only 1% of pancreatic tumors. Although both typically present at an advanced stage, chemotherapeutic regimes have not yet been standardized. PATIENT CONCERNS: A 65-year-old man presented with a large mass in the pancreatic tail with multiple liver metastases. DIAGNOSIS, INTERVENTIONS, OUTCOMES: He was initially treated with gemcitabine for suspected ductal carcinoma of the pancreas, but no response was observed...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29129515/amygdalin-improves-microcirculatory-disturbance-and-attenuates-pancreatic-fibrosis-by-regulating-the-expression-of-endothelin-1-and-calcitonin-gene-related-peptide-in-rats
#18
Xiangqun Zhang, Jiangong Hu, Yuzhen Zhuo, Lihua Cui, Caixia Li, Naiqiang Cui, Shukun Zhang
BACKGROUND: The pathogenesis of chronic pancreatitis (CP) is a complex process of interaction between tissue injury and repair, which involves microcirculatory disturbance. Amygdalin, an effective component extracted from Semen Persicae (a kind of Chinese herbal medicine), can decrease blood viscosity and improve microcirculation. In this study, we investigated the therapeutic effects of amygdalin on pancreatic fibrosis in rats with CP. METHODS: The rat CP model was induced by injecting dibutyltin dichloride (DBTC) into the right caudal vein...
November 9, 2017: Journal of the Chinese Medical Association: JCMA
https://www.readbyqxmd.com/read/29127325/acinar-injury-and-early-cytokine-response-in-human-acute-biliary-pancreatitis
#19
Aparna Jakkampudi, Ramaiah Jangala, Ratnakar Reddy, Sasikala Mitnala, G Venkat Rao, Rebala Pradeep, D Nageshwar Reddy, Rupjyoti Talukdar
Clinical acute pancreatitis (AP) is marked by an early phase of systemic inflammatory response syndrome (SIRS) with multiorgan dysfunction (MODS), and a late phase characterized by sepsis with MODS. However, the mechanisms of acinar injury in human AP and the associated systemic inflammation are not clearly understood. This study, for the first time, evaluated the early interactions of bile acid induced human pancreatic acinar injury and the resulting cytokine response. We exposed freshly procured resected human pancreata to taurolithocolic acid (TLCS) and evaluated for acinar injury, cytokine release and interaction with peripheral blood mononuclear cells (PBMCs)...
November 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29117461/atrial-natriuretic-peptide-reduces-inflammation-and-enhances-apoptosis-in-rat-acute-pancreatitis
#20
Ana Clara Najenson, Ana Paula Courreges, Juan Carlos Perazzo, María Fernanda Rubio, Marcelo S Vatta, Liliana G Bianciotti
AIM: We previously reported that atrial natriuretic peptide (ANP) reduces serum amylase and intrapancreatic trypsinogen activation in the onset of acute pancreatitis whereas secretin increases them. In the present work, we sought to establish the effect of ANP and secretin on the inflammatory response and cell death in experimental acute pancreatitis. METHODS: The expression and activity of key inflammatory mediators and apoptosis were evaluated in the presence or absence of the atrial peptide, secretin or both in cerulein-induced acute pancreatitis in rats...
November 8, 2017: Acta Physiologica
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