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https://www.readbyqxmd.com/read/27913635/screening-and-analysis-of-janelia-flylight-project-enhancer-gal4-strains-identifies-multiple-gene-enhancers-active-during-hematopoiesis-in-normal-and-wasp-challenged-drosophila-larvae
#1
Tsuyoshi Tokusumi, Yumiko Tokusumi, Mark S Brahier, Victoria Lam, Jessica R Stoller-Conrad, Paul T Kroeger, Robert A Schulz
A GFP expression screen has been conducted on greater than one thousand Janelia FlyLight Project enhancer-Gal4 lines to identify transcriptional enhancers active in the larval hematopoietic system. A total of 190 enhancers associated with 87 distinct genes showed activity in cells of the third instar larval lymph gland and hemolymph. That is, gene enhancers were active in cells of the lymph gland posterior signaling center (PSC), medullary zone (MZ), and/or cortical zone (CZ), while certain of the transcriptional control regions were active in circulating hemocytes...
December 2, 2016: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/27912789/dynamics-of-antigenemia-and-transmission-intensity-of-wuchereria-bancrofti-following-cessation-of-mass-drug-administration-in-a-formerly-highly-endemic-region-of-mali
#2
Yaya I Coulibaly, Siaka Y Coulibaly, Housseini Dolo, Siaka Konate, Abdallah A Diallo, Salif S Doumbia, Lamine Soumaoro, Michel E Coulibaly, Ilo Dicko, Moussa B Sangare, Benoit Dembele, Modibo Sangare, Massitan Dembele, Yeya T Touré, Louise Kelly-Hope, Katja Polman, Dominique Kyelem, Sekou F Traore, Moses Bockarie, Amy D Klion, Thomas B Nutman
BACKGROUND: After seven annual rounds of mass drug administration (MDA) in six Malian villages highly endemic for Wuchereria bancrofti (overall prevalence rate of 42.7%), treatment was discontinued in 2008. Surveillance was performed over the ensuing 5 years to detect recrudescence. METHODS: Circulating filarial antigen (CFA) was measured using immunochromatographic card tests (ICT) and Og4C3 ELISA in 6-7 year-olds. Antibody to the W. bancrofti infective larval stage (L3) antigen, Wb123, was tested in the same population in 2012...
December 3, 2016: Parasites & Vectors
https://www.readbyqxmd.com/read/27912077/nlrp3-activation-induces-il-18-synthesis-and-affects-the-epithelial-barrier-function-in-reactive-cholangiocytes
#3
Luca Maroni, Laura Agostinelli, Stefania Saccomanno, Claudio Pinto, Debora Giordano, Chiara Rychlicki, Samuele De Minicis, Luciano Trozzi, Jesus M Banales, Espen Melum, Tom H Karlsen, Antonio Benedetti, Gianluca Svegliati Baroni, Marco Marzioni
Microbial products are thought to influence the progression of cholangiopathies, in particular primary sclerosing cholangitis (PSC). Inflammasomes are molecular platforms that respond to microbial products through the synthesis of proinflammatory cytokines. We investigated the role of inflammasome activation in cholangiocyte response to injury. Nucleotide-binding oligomerization domain (NOD)-like receptor family, pyrin domain-containing protein 3 (Nlrp3) expression was tested in cholangiocytes of normal and cholestatic livers...
November 29, 2016: American Journal of Pathology
https://www.readbyqxmd.com/read/27908220/pluripotent-stem-cells-the-last-10-years
#4
Erin A Kimbrel, Robert Lanza
Pluripotent stem cells (PSCs) can differentiate into virtually any cell type in the body, making them attractive for both regenerative medicine and drug discovery. Over the past 10 years, technological advances and innovative platforms have yielded first-in-man PSC-based clinical trials and opened up new approaches for disease modeling and drug development. Induced PSCs have become the foremost alternative to embryonic stem cells and accelerated the development of disease-in-a-dish models. Over the years and with each new discovery, PSCs have proven to be extremely versatile...
December 2, 2016: Regenerative Medicine
https://www.readbyqxmd.com/read/27908204/clinical-implications-of-serial-versus-isolated-biliary-fluorescence-in-situ-hybridization-fish-polysomy-in-primary-sclerosing-cholangitis
#5
Kevin P Quinn, James H Tabibian, Keith D Lindor
BACKGROUND: Cholangiocarcinoma (CCA) is a leading cause of death in patients with primary sclerosing cholangitis (PSC). Biliary polysomy detected by fluorescence in situ hybridization (FISH) helps to identify patients with early CCA, but not all PSC patients with polysomy develop CCA. Here, we examined the features and clinical outcomes of PSC patients with serial versus isolated polysomy. METHODS: All patients with PSC who underwent ≥1 endoscopic retrograde cholangiography (ERC) with FISH testing at Mayo Clinic, Rochester from 2008-2011 were identified...
December 1, 2016: Scandinavian Journal of Gastroenterology
https://www.readbyqxmd.com/read/27903970/ion-channels-in-control-of-pancreatic-stellate-cell-migration
#6
Hannah Storck, Benedikt Hild, Sandra Schimmelpfennig, Sarah Sargin, Nikolaj Nielsen, Angela Zaccagnino, Thomas Budde, Ivana Novak, Holger Kalthoff, Albrecht Schwab
Pancreatic stellate cells (PSCs) play a critical role in the progression of pancreatic ductal adenocarcinoma (PDAC). Once activated, PSCs support proliferation and metastasis of carcinoma cells. PSCs even co-metastasise with carcinoma cells. This requires the ability of PSCs to migrate. In recent years, it has been established that almost all "hallmarks of cancer" such as proliferation or migration/invasion also rely on the expression and function of ion channels. So far, there is only very limited information about the function of ion channels in PSCs...
November 26, 2016: Oncotarget
https://www.readbyqxmd.com/read/27891750/epidemiology-and-outcomes-of-primary-sclerosing-cholangitis-with-and-without-inflammatory-bowel-disease-in-an-australian-cohort
#7
Ken Liu, Ruoxi Wang, Viraj Kariyawasam, Mark Wells, Simone I Strasser, Geoff McCaughan, Crispin Corte, Rupert W Leong
BACKGROUND&AIMS: Epidemiological data on primary sclerosing cholangitis (PSC) outside the Northern hemisphere is limited. Similarly, the impact of inflammatory bowel disease (IBD) on PSC outcomes remains unclear. We aimed to study the epidemiology and outcomes of PSC patients with and without IBD in an Australian cohort. METHODS: We retrospectively studied PSC patients attending two tertiary referral hospitals over 20years. Diagnosis of PSC was made according to international guidelines by positive cholangiography and/or liver biopsy (for small duct PSC) with supporting clinical and laboratory evidence RESULTS: 208 PSC patients (61% male) were studied (2,271patient-years follow-up)...
November 28, 2016: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/27882046/the-role-of-genetic-and-immune-factors-for-the-pathogenesis-of-primary-sclerosing-cholangitis-in-childhood
#8
REVIEW
Priscila Menezes Ferri, Ana Cristina Simões E Silva, Soraya Luiza Campos Silva, Diego Junior Queiroga de Aquino, Eleonora Druve Tavares Fagundes, Débora Marques de Miranda, Alexandre Rodrigues Ferreira
Primary sclerosing cholangitis (PSC) is a rare cholestatic liver disease characterized by chronic inflammation of the biliary tree resulting in liver fibrosis. PSC is more common in male less than 40 years of age. The diagnosis of PSC is based on clinical, laboratory, image, and histological findings. A biochemical profile of mild to severe chronic cholestasis can be observed. Endoscopic retrograde cholangiography is the golden standard method for diagnosis, but magnetic resonance cholangiography is currently also considered a first-line method of investigation...
2016: Gastroenterology Research and Practice
https://www.readbyqxmd.com/read/27880989/validation-of-the-prognostic-value-of-histologic-scoring-systems-in-primary-sclerosing-cholangitis-an-international-cohort-study
#9
Elisabeth M G De Vries, Manon de Krijger, Martti Farkkila, Johanna Arola, Peter Schirmacher, Daniel Gotthardt, Benjamin Goeppert, Palak J Trivedi, Gideon M Hirschfield, Henriette Ytting, Ben Vainer, Henk R van Buuren, Katharina Biermann, Maren H Harms, Olivier Chazouilleres, Dominique Wendum, Astrid Donald Kemgang, Roger W Chapman, Lai Mun Wang, Kate D Williamson, Annette S H Gouw, Valerie Paradis, Christine Sempoux, Ulrich Beuers, Stefan Hubscher, Joanne Verheij, Cyriel Ponsioen
: Histologic scoring systems specific for primary sclerosing cholangitis (PSC) are not validated. We recently determined the applicability and prognostic value of three histological scoring systems in a single PSC cohort. The aim of this study was to validate their prognostic utility and reproducibility, across a multicenter PSC cohort. Liver biopsies from PSC patients were collected across 7 European centers. Histologic scoring was performed using the Nakanuma, Ishak, and Ludwig scoring systems...
November 23, 2016: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/27877901/transfer-printing-of-active-layers-to-achieve-high-quality-interfaces-in-sequentially-deposited-multilayer-inverted-polymer-solar-cells-fabricated-in-air
#10
Varun Vohra, Takuya Anzai, Shusei Inaba, William Porzio, Luisa Barba
Polymer solar cells (PSCs) are greatly influenced by both the vertical concentration gradient in the active layer and the quality of the various interfaces. To achieve vertical concentration gradients in inverted PSCs, a sequential deposition approach is necessary. However, a direct approach to sequential deposition by spin-coating results in partial dissolution of the underlying layers which decreases the control over the process and results in not well-defined interfaces. Here, we demonstrate that by using a transfer-printing process based on polydimethylsiloxane (PDMS) stamps we can obtain increased control over the thickness of the various layers while at the same time increasing the quality of the interfaces and the overall concentration gradient within the active layer of PSCs prepared in air...
2016: Science and Technology of Advanced Materials
https://www.readbyqxmd.com/read/27874998/factors-predictive-of-the-efficacy-of-bezafibrate-therapy-in-patients-with-primary-sclerosing-cholangitis
#11
Suguru Mizuno, Hiroyuki Isayama, Kenji Hirano, Takeo Watanabe, Naminatsu Takahara, Hirofumi Kogure, Saburo Matsubara, Yousuke Nakai, Minoru Tada, Kazuhiko Koike
AIM: Primary sclerosing cholangitis (PSC) is a rare cholestatic disease. We previously reported the effects of bezafibrate on elevated hepatobiliary enzyme levels in patients with this disease both retrospectively and prospectively. In this study, we assessed factors predictive of bezafibrate efficacy. METHODS: Twenty-five patients with PSC, who underwent bezafibrate therapy (400 mg per day) from November 2006 to June 2015, were evaluated. Treatment was judged as being effective if the levels of all of the hepatobiliary enzymes decreased after 12 weeks...
November 22, 2016: Hepatology Research: the Official Journal of the Japan Society of Hepatology
https://www.readbyqxmd.com/read/27869805/engineered-human-pluripotent-stem-cell-derived-intestinal-tissues-with-a-functional-enteric-nervous-system
#12
Michael J Workman, Maxime M Mahe, Stephen Trisno, Holly M Poling, Carey L Watson, Nambirajan Sundaram, Ching-Fang Chang, Jacqueline Schiesser, Philippe Aubert, Edouard G Stanley, Andrew G Elefanty, Yuichiro Miyaoka, Mohammad A Mandegar, Bruce R Conklin, Michel Neunlist, Samantha A Brugmann, Michael A Helmrath, James M Wells
The enteric nervous system (ENS) of the gastrointestinal tract controls many diverse functions, including motility and epithelial permeability. Perturbations in ENS development or function are common, yet there is no human model for studying ENS-intestinal biology and disease. We used a tissue-engineering approach with embryonic and induced pluripotent stem cells (PSCs) to generate human intestinal tissue containing a functional ENS. We recapitulated normal intestinal ENS development by combining human-PSC-derived neural crest cells (NCCs) and developing human intestinal organoids (HIOs)...
November 21, 2016: Nature Medicine
https://www.readbyqxmd.com/read/27867005/temporal-expression-of-cd184-cxcr4-and-cd171-l1cam-identifies-distinct-early-developmental-stages-of-human-retinal-ganglion-cells-in-embryonic-stem-cell-derived-retina
#13
J G Aparicio, H Hopp, A Choi, J Mandayam Comar, V C Liao, N Harutyunyan, T C Lee
Human retinal ganglion cells (RGCs) derived from pluripotent stem cells (PSCs) have anticipated value for human disease study, drug screening, and therapeutic applications; however, their full potential remains underdeveloped. To characterize RGCs in human embryonic stem cell (hESC) derived retinal organoids we examined RGC markers and surface antigen expression and made comparisons to human fetal retina. RGCs in both tissues exhibited CD184 and CD171 expression and distinct expression patterns of the RGC markers BRN3 and RBPMS...
November 17, 2016: Experimental Eye Research
https://www.readbyqxmd.com/read/27864874/prognostic-biomarkers-and-surrogate-end-points-in-psc
#14
EDITORIAL
Mette Vesterhus, Espen Melum
No abstract text is available yet for this article.
December 2016: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/27858798/heterogeneous-fenton-like-discoloration-of-organic-dyes-catalyzed-by-porous-schorl-ceramisite
#15
Huan-Yan Xu, Hang Zhao, Nan-Ping Cao, Qi Liu, Shu-Yan Qi
Due to the difficult separation of superfine schorl powder (SSP) from solution after being used, millimetre-scale porous schorl ceramisite (PSC) was obtained through solid-phase sintering method and used as a heterogeneous catalyst for Fenton-like discoloration of organic dyes. SSP and PSC were characterized by X-ray diffraction, Fourier transform infrared spectroscopy and field emission scanning electron microscopy. The results demonstrated that both SSP and PSC were mainly composed of schorl and there existed large amounts of micropores on the surface of PSC...
November 2016: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/27857543/isolation-and-characterization-of-pepsin-soluble-collagens-from-bones-skins-and-tendons-in-duck-feet
#16
Hyun-Wook Kim, In-Jun Yeo, Ko-Eun Hwang, Dong-Heon Song, Yong-Jae Kim, Youn-Kyung Ham, Tae-Jun Jeong, Yun-Sang Choi, Cheon-Jei Kim
The objectives of this study were conducted to characterize pepsin-soluble collagen (PSC) extracted from bones (PSC-B), skins (PSC-S), and tendons (PSC-T) of duck feet and to determine their thermal and structural properties, for better practical application of each part of duck feet as a novel source for collagen. PSC was extracted from each part of duck feet by using 0.5 M acetic acid containing 5% (w/w) pepsin. Electrophoretic patterns showed that the ratio between α1 and α2 chains, which are subunit polypeptides forming collagen triple helix, was approximately 1:1 in all PSCs of duck feet...
October 31, 2016: Korean Journal for Food Science of Animal Resources
https://www.readbyqxmd.com/read/27856956/the-efflux-transporter-abcg2-maintains-prostate-stem-cells
#17
Neha G Sabnis, Austin Miller, Mark A Titus, Wendy J Huss
: Prostate Stem Cells (PSCs) are characterized by their intrinsic resistance to Androgen Deprivation Therapy (ADT), possibly due to the lack of Androgen Receptor (AR) expression. PSCs resistance to ADT and PSC expansion in Castration Recurrent Prostate Cancer (CRPC) has sparked great interest in using differentiation therapy as an adjuvant to ADT. Understanding the mechanisms, by which PSCs maintain their undifferentiated phenotype, thus has important implications in differentiation therapy...
November 17, 2016: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/27855457/-cholestatic-liver-disease
#18
Christine Pichler, Tobias Boettler, Robert Thimme
Common cholestatic liver diseases are primary biliary cholangitis (PBC) and primary sclerosing cholangitis (PSC). Both diseases are considered autoimmune disorders; however, the precise pathogenesis remains elusive. Patients usually show no symptoms or present with pruritus and fatigue. High alkaline phosphatase and the presence of antimitochondrial antibodies are sufficient to diagnose PBC. Ursodeoxycholic acid is approved and recommended for the treatment of PBC. The diagnosis of PSC is established by elevated alkaline phosphatase-levels and typical cholangiographic findings...
November 2016: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/27855278/cadherin-11-is-a-cell-surface-marker-up-regulated-in-activated-pancreatic-stellate-cells-and-is-involved-in-pancreatic-cancer-cell-migration
#19
Chiara Birtolo, Hung Pham, Susan Morvaridi, Chintan Chheda, Vay Liang W Go, Andrzej Ptasznik, Mouad Edderkaoui, Michael Weisman, Erika Noss, Michael Brenner, Brent Larson, Maha Guindi, Qiang Wang, Stephen J Pandol
Chronic pancreatitis is a prominent risk factor for the development of pancreatic ductal adenocarcinoma. In both conditions, the activation of myofibroblast-like pancreatic stellate cells (PSCs) plays a predominant role in the formation of desmoplastic reaction through the synthesis of connective tissue and extracellular matrix, inducing local pancreatic fibrosis and an inflammatory response. Yet the signaling events involved in chronic pancreatitis and pancreatic cancer progression and metastasis remain poorly defined...
November 14, 2016: American Journal of Pathology
https://www.readbyqxmd.com/read/27852547/prevalence-of-igg-4-associated-cholangiopathy-based-on-serum-igg-4-levels-in-patients-with-primary-sclerosing-cholangitis-and-its-relationship-with-inflammatory-bowel-disease
#20
Seyed Alireza Taghavi, Shaghayegh Kaedi Majd, Mahnoosh Sianati, Masood Sepehrimanesh
BACKGROUND/AIMS: Autoimmune cholangiopathy is part of a fibro-inflammatory immunoglobulin G-4 (IgG-4)-related systemic disease that causes biliary tract strictures. Its clinical presentation is quite similar to that of more common diseases such as primary sclerosing cholangitis (PSC) and pancreatobilliary malignancies. The aims of the present study were to evaluate the prevalence of IgG-4-associated cholangiopathy (IAC) in patients diagnosed with PSC and its relationship with inflammatory bowel disease (IBD)...
November 2016: Turkish Journal of Gastroenterology: the Official Journal of Turkish Society of Gastroenterology
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