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https://www.readbyqxmd.com/read/29156615/clinical-significance-of-measuring-global-hydroxymethylation-of-white-blood-cell-dna-in-prostate-cancer-comparison-to-psa-in-a-pilot-exploratory-study
#1
Alin Grelus, Dragos V Nica, Imola Miklos, Valerica Belengeanu, Ioan Ioiart, Cristina Popescu
This is the first study investigating the clinical relevance of 5-hydroxymethylcytosine (5hmC) in genomic DNA from white blood cells (WBC) in the context of prostate cancer (PCa) and other prostate pathologies. Using an enzyme-linked immunosorbent assay, we identified significantly different distributions of patients with low and elevated 5hmC content in WBC DNA across controls and patients with prostate cancer (PCa), atypical small acinar proliferation (ASAP), and benign prostatic hyperplasia (BPH). The measured values were within the normal range for most PCa patients, while the latter category was predominant for ASAP...
November 20, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29155449/baicalein-inhibits-acinar-to-ductal-metaplasia-of-pancreatic-acinal-cell-ar42j-via-improving-the-inflammatory-microenvironment
#2
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
#3
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
#4
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/29147434/acute-radiation-induced-changes-in-sprague-dawley-rat-submandibular-glands-a-histomorphometric-analysis
#5
Manu Krishnan, Aatish Tennavan, Seema Saraswathy, Tarun Sekhri, Ajay Kumar Singh, Velu Nair
Background: Radiation-induced xerostomia is a distressing clinical condition that starts appearing from the initial stages of radiotherapy in head and neck cancer patients. Though submandibular glands contribute to maximum of the "resting salivary" secretions, most of the acute xerostomia experiments so far reported have been on animal parotid glands. Therefore, we assessed and quantified the histologic changes in submandibular glands of Sprague-Dawley (SD) rats using histomorphometry, 24 hours after radiation...
April 2017: World Journal of Oncology
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
#6
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/29137260/pathologic-subtype-defined-prognosis-is-dependent-on-both-tumor-stage-and-status-of-oncogenic-driver-mutations-in-lung-adenocarcinoma
#7
Yu Dong, Ying Li, Bo Jin, Jie Zhang, Jinchen Shao, Hong Peng, Shichun Tu, Baohui Han
Previous studies have shown that the prognosis of lung adenocarcinoma is associated with pathological characterization. In this study, we investigated whether pathology-based prognosis was further influenced by both tumor stage and oncogenic driver mutations. To this end, we recruited a cohort of 465 lung adenocarcinoma patients in China. These patients were classified into 6 pathology-defined subtypes i.e., lepidic-predominant adenocarcinoma (LPA), acinar-predominant adenocarcinoma (APA), papillary-predominant adenocarcinoma (PPA), micropapillary-predominant adenocarcinoma (MPA), solid-predominant adenocarcinoma (SPA), and invasive mucinous adenocarcinoma (IMA)...
October 10, 2017: Oncotarget
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
#8
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
#9
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
#10
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
#11
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
https://www.readbyqxmd.com/read/29109526/genome-wide-genetic-and-epigenetic-analyses-of-pancreatic-acinar-cell-carcinomas-reveal-aberrations-in-genome-stability
#12
Cornelia Jäkel, Frank Bergmann, Reka Toth, Yassen Assenov, Daniel van der Duin, Oliver Strobel, Thomas Hank, Günter Klöppel, Craig Dorrell, Markus Grompe, Joshua Moss, Yuval Dor, Peter Schirmacher, Christoph Plass, Odilia Popanda, Peter Schmezer
Pancreatic acinar cell carcinoma (ACC) is an aggressive exocrine tumor with largely unknown biology. Here, to identify potential targets for personalized treatment, we perform integrative genome-wide and epigenome-wide analyses. The results show frequently aberrant DNA methylation, abundant chromosomal amplifications and deletions, and mutational signatures suggesting defective DNA repair. In contrast to pancreatic ductal adenocarcinoma, no recurrent point mutations are detected. The tumor suppressors ID3, ARID1A, APC, and CDKN2A are frequently impaired also on the protein level and thus potentially affect ACC tumorigenesis...
November 6, 2017: Nature Communications
https://www.readbyqxmd.com/read/29109472/proteomic-analysis-reveals-an-impaired-ca-2-aqp5-pathway-in-the-submandibular-gland-in-hypertension
#13
Jing Zhang, Li-Jun Zhong, Yang Wang, Li-Mei Liu, Xin Cong, Ruo-Lan Xiang, Li-Ling Wu, Guang-Yan Yu, Yan Zhang
Hypertension is a systemic disorder that affects numerous physiological processes throughout the body. Improper sodium transport is a common comorbidity of hypertension, and sodium transport is also critical for maintaining the secretion of submandibular glands, whether the function of submandibular glands is affected by hypertension remains unclear. To determine whether hypertension induces changes in the protein expression of submandibular glands, we compared the proteome of submandibular glands from 14-week-old spontaneously hypertensive rats (SHR) and Wistar Kyoto (WKY) rats using LC-MS/MS...
November 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29107074/loss-of-%C3%AE-epithelial-sodium-channel-function-in-meibomian-glands-produces-pseudohypoaldosteronism-1-like-ocular-disease-in-mice
#14
Dongfang Yu, Yogesh Saini, Gang Chen, Andrew J Ghio, Hong Dang, Kimberlie A Burns, Yang Wang, Richard M Davis, Scott H Randell, Charles R Esther, Friedrich Paulsen, Richard C Boucher
Human subjects with pseudohypoaldosteronism-1 due to loss of function mutations in epithelial Na(+) channel (ENaC) subunits exhibit meibomian gland (MG) dysfunction. A conditional βENaC MG knockout mouse model was generated to elucidate the pathogenesis of absent ENaC function in the MG and associated ocular surface disease. βENaC MG KO mice exhibited a striking age dependent, female predominant MG dysfunction phenotype, with white toothpaste-like secretions observed obstructing MG orifices at seven weeks of age...
October 26, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/29102711/pleomorphic-lobular-carcinoma-in-situ-diagnosed-by-breast-core-biopsy-clinicopathologic-features-and-correlation-with-subsequent-excision
#15
Tianhua Guo, Yihong Wang, Nella Shapiro, Susan Fineberg
INTRODUCTION: Pleomorphic lobular carcinoma in situ (PLCIS) is a variant of LCIS with high-grade morphologic features. The number of case series studying PLCIS is limited, and clinical management of patients with PLCIS is controversial. We report a breast core biopsy (BCBx) series of PLCIS. MATERIALS AND METHODS: We reviewed 37 cases of PLCIS with or without microinvasion diagnosed by BCBx. PLCIS was defined as dyscohesive cells showing acinar expansion and loss of immunohistochemical membranous expression of e-cadherin or beta-catenin with nuclear pleomorphism with at least 2- to 3-fold variation in nuclear size, membrane irregularities, and variably prominent nucleoli...
October 7, 2017: Clinical Breast Cancer
https://www.readbyqxmd.com/read/29102149/systemic-histone-release-disrupts-plasmalemma-and-contributes-to-necrosis-in-acute-pancreatitis
#16
Peter Szatmary, Tingting Liu, Simon T Abrams, Svetlana Voronina, Li Wen, Michael Chvanov, Wei Huang, Guozheng Wang, David N Criddle, Alexey V Tepikin, Cheng-Hock Toh, Robert Sutton
BACKGROUND: Clinical and experimental acute pancreatitis feature histone release within the pancreas from innate immune cells and acinar cell necrosis. In this study, we aimed to detail the source of circulating histones and assess their role in the pathogenesis of acute pancreatitis. METHODS: Circulating nucleosomes were measured in patient plasma, taken within 24 and 48 h of onset of acute pancreatitis and correlated with clinical outcomes. Using caerulein hyperstimulation, circulating histones were measured in portal, systemic venous and systemic arterial circulation in mice, and the effects of systemic administration of histones in this model were assessed...
October 7, 2017: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
https://www.readbyqxmd.com/read/29082362/an-unexpected-etiology-of-pancreatic-panniculitis-a-case-report
#17
A C Evans, A D Singhi, H J Zeh, N Bahary, R E Brand
BACKGROUND: Pancreatic panniculitis is a rare cause of subcutaneous fat necrosis secondary to elevated serum levels of pancreatic enzymes. It is most often associated with pancreatic acinar cell carcinoma, but has also been seen in patients with pancreatitis. CASE REPORT: We present a case of a 64 year old Caucasian man without symptoms of pancreatitis who presents with pancreatic panniculitis manifesting in multiple subcutaneous ulcerating nodules of the bilateral lower extremities, discovered to have a previously unreported etiology for this condition...
2017: J Pancreat Cancer
https://www.readbyqxmd.com/read/29079517/cathepsin-b-mediated-activation-of-trypsinogen-in-endocytosing-macrophages-increases-severity-of-pancreatitis-in-mice
#18
Matthias Sendler, Frank-Ulrich Weiss, Janine Golchert, Georg Homuth, Cindy van den Brandt, Ujjwal M Mahajan, Lars-Ivo Partecke, Paula Döring, Ilya Gukovsky, Anna S Gukovskaya, Preshit R Wagh, Markus M Lerch, Julia Mayerle
BACKGROUND & AIMS: Acute pancreatitis is characterized by premature intracellular activation of digestive proteases within pancreatic acini and a consecutive systemic inflammatory response. We investigated how these processes interact during severe pancreatitis in mice. METHODS: Pancreatitis was induced in C57Bl/6 wild-type (control), cathepsin B-knockout, and cathepsin L-knockout mice by partial pancreatic duct ligation with supramaximal caerulein injection, or by repetitive supramaximal caerulein injections alone...
October 24, 2017: Gastroenterology
https://www.readbyqxmd.com/read/29076306/multifocal-spectral-domain-optical-coherence-tomography-based-on-bessel-beam-for-extended-imaging-depth
#19
Luying Yi, Liqun Sun, Wuwen Ding
To advance the practical application of optical coherence tomography (OCT) in the field of biomedical imaging, the imaging depth must be extended without sacrificing resolution while maintaining sufficient sensitivity. However, there is an inherent trade-off between lateral resolution and depth of field (DOF) in OCT. To address this shortcoming, this article proposes a multifocal Bessel beam spectral-domain optical coherence tomography (MBSDOCT) capable of increasing the DOF with unchanged lateral resolution and a high signal-to-noise ratio...
October 2017: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/29074451/mitochondrial-dysfunction-through-impaired-autophagy-leads-to-endoplasmic-reticulum-stress-deregulated-lipid-metabolism-and-pancreatitis-in-animal-models
#20
Gyorgy Biczo, Eszter T Vegh, Natalia Shalbueva, Olga A Mareninova, Jason Elperin, Ethan Lotshaw, Sophie Gretler, Aurelia Lugea, Sudarshan R Malla, David Dawson, Piotr Ruchala, Julian Whitelegge, Samuel W French, Li Wen, Sohail Z Husain, Fred S Gorelick, Peter Hegyi, Zoltan Rakonczay, Ilya Gukovsky, Anna S Gukovskaya
BACKGROUND & AIMS: Little is known about the signaling pathways that initiate and promote acute pancreatitis (AP). The pathogenesis of AP has been associated with abnormal increases in cytosolic Ca(2+), mitochondrial dysfunction, impaired autophagy, and endoplasmic reticulum (ER) stress. We analyzed the mechanisms of these dysfunctions and their relationships, and how these contribute to development of AP in mice and rats. METHODS: Pancreatitis was induced in C57BL/6J mice (control) and mice deficient in peptidylprolyl isomerase D (cyclophilin D, encoded by Ppid) by administration of L-arginine (also in rats), caerulein, bile acid, or an AP-inducing diet...
October 23, 2017: Gastroenterology
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