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inflammatory bowel disease AND neutrophils

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https://www.readbyqxmd.com/read/29334018/pyoderma-gangrenosum-demographics-treatments-and-outcomes-an-analysis-of-2-273-cases
#1
Sarah E Sasor, Tahereh Soleimani, Michael W Chu, Julia A Cook, Peter J Nicksic, Sunil S Tholpady
OBJECTIVE: Pyoderma gangrenosum is a rare, neutrophil-mediated, auto-inflammatory dermatosis. This condition has clinical features analogous to infectious processes and must be quickly diagnosed to be properly treated. The purpose of this study was to characterise relevant clinical features associated with pyoderma gangrenosum based on a large inpatient cohort. METHOD: The National Inpatient Sample (US) was used to identify patients with the diagnosis of pyoderma gangrenosum using ICD-9 diagnosis code 686...
January 1, 2018: Journal of Wound Care
https://www.readbyqxmd.com/read/29324769/impaired-resolution-of-dss-induced-colitis-in-mice-lacking-the-glucocorticoid-receptor-in-myeloid-cells
#2
Garrit K Meers, Hanibal Bohnenberger, Holger M Reichardt, Fred Lühder, Sybille D Reichardt
Inflammatory bowel disease (IBD) is a highly prevalent intestinal disorder for which no cure exists. Currently, the standard first-line treatment of IBD consists of systemic glucocorticoid (GC) application, even though therapy can be complicated by unresponsiveness or adverse effects. In view of the importance of macrophages and neutrophils for the pathogenesis of IBD we set out to define the relevance of these cell types as targets of GC using the mouse model of DSS-induced colitis. We found that the disease did not resolve in GRlysM mice lacking the GC receptor (GR) in myeloid cells after removal of the chemical insult...
2018: PloS One
https://www.readbyqxmd.com/read/29259036/loss-of-acid-ceramidase-in-myeloid-cells-suppresses-intestinal-neutrophil-recruitment
#3
Mel Pilar Espaillat, Ashley J Snider, Zhijuan Qiu, Breana Channer, Nicolas Coant, Edward H Schuchman, Richard R Kew, Brian S Sheridan, Yusuf A Hannun, Lina M Obeid
Bioactive sphingolipids are modulators of immune processes and their metabolism is often dysregulated in ulcerative colitis, a major category of inflammatory bowel disease (IBD). While multiple axes of sphingolipid metabolism have been investigated to delineate mechanisms regulating ulcerative colitis, the role of acid ceramidase (AC) in intestinal inflammation is yet to be characterized. Here we demonstrate that AC expression is elevated selectively in the inflammatory infiltrate in human and murine colitis...
December 19, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29247242/myeloid-differentiation-primary-response-gene-myd-88-signalling-is-not-essential-for-intestinal-fibrosis-development
#4
C Lutz, B Weder, A Hünerwadel, S Fagagnini, B Lang, N Beerenwinkel, J B Rossel, G Rogler, B Misselwitz, M Hausmann
Dysregulation of the immune response to microbiota is associated with inflammatory bowel disease (IBD), which can trigger intestinal fibrosis. MyD88 is a key component of microbiota signalling but its influence on intestinal fibrosis has not been clarified. Small bowel resections from donor-mice were transplanted subcutaneously into the neck of recipients C57BL/6 B6-MyD88tm1 Aki (MyD88-/-) and C57BL/6-Tg(UBC-green fluorescence protein (GFP))30Scha/J (GFP-Tg). Grafts were explanted up to 21 days after transplantation...
December 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29212102/-conservative-treatment-of-an-aseptic-abscess-syndrome-with-splenic-abscesses-in-crohn-s-disease
#5
Thomas Göbel, Jutta Rauen-Vossloh, Hubert Georg Hotz, Andree Boldt, Andreas Erhardt
A 24-year old woman with a history of Crohn's disease developed bloody diarrhea and multiple abdominal abscesses, daily fever, leukocytosis, and elevated CRP several months after her immunosuppressive therapy with azathioprine was stopped. Recurrent abscess punctures did not detect any pathogenic germs and neither clinical nor serological response was achieved by administration of different antimicrobial therapies. Additionally, new splenic abscesses arose despite ongoing therapy. Under the suspicion of the rare aseptic abscess syndrome, representing an auto-inflammatory, extra-intestinal manifestation of Crohn's disease, the antimicrobial therapy was stopped and an intravenous therapy with prednisolone was initiated...
December 2017: Zeitschrift Für Gastroenterologie
https://www.readbyqxmd.com/read/29210335/predictive-role-of-nudt15-variants-on-thiopurine-induced-myelotoxicity-in-asian-inflammatory-bowel-disease-patients
#6
Natalia Sutiman, Sylvia Chen, Khoon Lin Ling, Sai Wei Chuah, Wai Fook Leong, Vinayak Nadiger, Madeline Tjai, Chris San Choon Kong, Brian John Schwender, Webber Chan, Hang Hock Shim, Wee Chian Lim, Chiea Chuen Khor, Yin Bun Cheung, Balram Chowbay
BACKGROUND: Genetic variants of TPMT and NUDT15 have been reported to predict the inter-patient variability in response and toxicity profiles of patients receiving thiopurine therapy. However, the clinical utility of TPMT genotyping in guiding thiopurine doses has been questionable, in part due to underlying differences in the prevalence of TPMT variants in both Caucasian and Asian populations. Several NUDT15 variants have been associated with thiopurine-induced leukopenia, particularly in Asian cohorts...
December 6, 2017: Pharmacogenomics
https://www.readbyqxmd.com/read/29191346/neutrophilic-dermatoses-kids-are-not-just-little-people
#7
Grace L Lee, Amy Y-Y Chen
Neutrophilic dermatoses are a group of inflammatory skin disorders characterized by an overactive innate immune system with dysregulation of neutrophils without underlying infectious etiology. The major representative conditions discussed are Sweet syndrome; pyoderma gangrenosum; neutrophilic eccrine hidradenitis; palmoplantar eccrine hidradenitis; subcorneal pustular dermatoses; bowel-associated dermatosis arthritis syndrome; and synovitis, acne, pustulosis, hyperostosis, and osteitis. We will also discuss other neutrophilic conditions present almost exclusively in the pediatric population, including congenital erosive and vesicular dermatosis with reticulated supple scarring and the recently described group of autoinflammatory diseases...
November 2017: Clinics in Dermatology
https://www.readbyqxmd.com/read/29180269/dysregulation-of-antioxidant-responses-in-patients-diagnosed-with-concomitant-primary-sclerosing-cholangitis-inflammatory-bowel-disease
#8
Colin T Shearn, David J Orlicky, Dennis R Petersen
OBJECTIVE: Primary Sclerosing Cholangitis (PSC) is a chronic cholestatic liver disease that is characterized by severe peri-biliary tract inflammation and fibrosis, elevated oxidative stress and hepatocellular injury. A hallmark of PSC patients is the concurrent diagnosis of Inflammatory Bowel Disease occurring in approximately 70%-80% of PSC patients (PSC/IBD). The objective of this study was to determine the impact of end stage PSC/IBD on cellular antioxidant responses and the formation of protein carbonylation...
November 24, 2017: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/29140405/the-apoptotic-crypt-abscess-an-underappreciated-histologic-finding-in-gastrointestinal-pathology
#9
Geoffrey Talmon, Tristan Manasek, Ross Miller, David Muirhead, Audrey Lazenby
Objectives: To differentiate apoptotic crypt abscesses (ACAs) from neutrophilic crypt abscesses (NCAs). Methods: Cases with crypt abscesses were classified as containing ACAs, NCAs, or mixed crypt abscesses (MCAs) by H&E staining. Sections were stained with cleaved caspase 3 and myeloperoxidase and recategorized. Results: Fifty-nine cases were reviewed: inflammatory bowel disease (IBD; n = 33), acute cellular rejection (n = 5), graft vs host disease (GVHD; n = 14), cytomegalovirus (n = 5), and drug reaction (n = 2)...
November 20, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/29137646/the-potential-of-interleukin-37-as-an-effective-therapeutic-agent-in-asthma
#10
REVIEW
Lina Zhang, Jie Zhang, Peng Gao
Interleukin (IL)-37 belongs to the IL-1 cytokine family. It binds to IL-18Rα and recruits the orphan decoy IL-1R8. Emerging evidence shows that IL-37 is a key player in the regulation of inflammation, cellular differentiation, and proliferation. Altered IL-37 expression has been demonstrated in many inflammatory disease conditions, including asthma. In rheumatoid arthritis, IL-37 is involved in the regulation of proliferation, production of inflammatory mediators, and activation of inflammatory cells. Furthermore, this cytokine acts as a negative regulator of inflammation in inflammatory bowel disease...
November 14, 2017: Respiratory Research
https://www.readbyqxmd.com/read/29133754/comparison-of-clinical-features-between-pyoderma-gangrenosum-concomitant-by-inflammatory-bowel-disease-and-idiopathic-pyoderma-gangrenosum
#11
Yan-Yun Jiang, Ji Li, Yue Li, Qiang Wang, Shuang Liu, Kai Fang, Jia-Ming Qian, Hong-Zhong Jin
BACKGROUND: Pyoderma gangrenosum (PG) is a rare neutrophilic dermatosis that is highly associated with inflammatory bowel disease (IBD). Certain PG patients with no systemic disorders have been diagnosed with idiopathic PG. This study sought to clarify the difference between PG with IBD and idiopathic PG based on clinical features, laboratory tests, and medications. METHODS: Twelve patients with PG and IBD and 24 patients with idiopathic PG, who were hospitalized in Peking Union Medical College Hospital from 2000 to 2017, were retrospectively categorized into the IBD group and control group, respectively...
November 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/29115397/detection-of-calprotectin-in-inflammatory-bowel-disease-fecal-and-serum-levels-and-immunohistochemical-localization
#12
Shuhei Fukunaga, Kotaro Kuwaki, Keiichi Mitsuyama, Hidetoshi Takedatsu, Shinichiro Yoshioka, Hiroshi Yamasaki, Ryosuke Yamauchi, Atsushi Mori, Tatsuyuki Kakuma, Osamu Tsuruta, Takuji Torimura
The aim of the present study was to quantify calprotectin levels using an enzyme-linked immunosorbent assay (ELISA) and a point-of-care test (POCT) in patients with inflammatory bowel disease. Overall, 113 patients with ulcerative colitis (UC; 51 men and 62 women) and 42 patients with Crohn's disease (CD; 29 men and 13 women), who were scheduled to undergo a colonoscopy, were prospectively enrolled and scored endoscopically and clinically. An additional 96 healthy, age-matched subjects served as the normal controls...
November 7, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29109724/actors-and-factors-in-the-resolution-of-intestinal-inflammation-lipid-mediators-as-a-new-approach-to-therapy-in-inflammatory-bowel-diseases
#13
REVIEW
Federica Ungaro, Federica Rubbino, Silvio Danese, Silvia D'Alessio
In the last few decades, the pathogenesis of inflammatory bowel disease (IBD) in genetically predisposed subjects susceptible to specific environmental factors has been attributed to disturbance of both the immune and non-immune system and/or to the imbalanced interactions with microbes. However, increasing evidences support the idea that defects in pro-resolving pathways might strongly contribute to IBD onset. The resolution of inflammation is now recognized as a dynamic event coordinated by specialized pro-resolving lipid mediators (LMs), which dampen inflammation-sustaining events, such as angiogenesis, release of pro-inflammatory cytokines, clearance of apoptotic cells, and microorganisms...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29091813/dietary-red-raspberries-attenuate-dextran-sulfate-sodium-induced-acute-colitis
#14
Shima Bibi, Yifei Kang, Min Du, Mei-Jun Zhu
Persistent intestinal inflammation severely impairs intestinal integrity resulting in inflammatory bowel disease. Red raspberries (RB) are a rich source of bioactive compounds; their beneficial effect on the colitis protection was evaluated in the current study using a dextran sulfate sodium (DSS)-induced acute colitis mouse model. Six-week-old mice were fed a standard rodent research diet supplemented with RB (0 or 5% w/w, n=20 each group) for 6 weeks. At the 4th week of dietary treatment, approximately half of mice in each dietary group (n=12 each group) were subjected to 2...
September 14, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29079781/therapeutic-efficacy-of-a-combined-sage-and-bitter-apple-phytopharmaceutical-in-chronic-dss-induced-colitis
#15
Maximilian Hoffmann, Ulla Schwertassek, Aleksandra Seydel, Klaus Weber, Sunna Hauschildt, Jörg Lehmann
Inflammatory bowel diseases are multifactorial disorders of the gastrointestinal tract with rising incidence worldwide. Current standard therapies are only partially effective and often show severe adverse effects. Thus, novel, more efficient and well-tolerated therapeutic options are urgently needed. We have studied the therapeutic potential of a phytopharmaceutical combining sage and bitter apple (SBA) in the mouse model of chronic dextran sulfate sodium (DSS) colitis. SBA represents a traditional medicine against diarrhea and was shown to exhibit anti-inflammatory effects in vitro...
October 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29056396/serology-in-autoimmune-hepatitis-a-clinical-practice-approach
#16
REVIEW
Benedetta Terziroli Beretta-Piccoli, Giorgina Mieli-Vergani, Diego Vergani
Serology is key to the diagnosis of autoimmune hepatitis (AIH). Clinicians need to be aware of which tests to request, how to interpret the laboratory reports, and be familiar with the laboratory methodology. If correctly tested, >95% of AIH patients show some serological reactivity. Indirect immunofluorescence on triple rodent tissue is recommended as first screening step, since it allows the detection of all liver-relevant autoantibodies, except for anti-soluble liver antigen (SLA) antibody, which needs to be detected by molecular based assays...
October 19, 2017: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/29051105/nicotine-and-autoimmunity-the-lotus-flower-in-tobacco
#17
REVIEW
João Pedro Gomes, Abdulla Watad, Yehuda Shoenfeld
Nicotine, the major component of cigarettes, has demonstrated conflicting impact on the immune system: some authors suggest that increases pro-inflammatory cytokines and provokes cellular apoptosis of neutrophils, releasing intracellular components that act as auto-antigens; others claimed that nicotine has a protective and anti-inflammatory effects, especially by binding to α7 subunit of nicotinic acetylcholine receptors. The cholinergic pathway contributes to an anti-inflammatory environment characterized by increasing T regulatory cells response, down-regulating of pro-inflammatory cytokines and a pro-inflammatory cells apoptosis...
October 16, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29040430/transcriptomic-landscape-of-treatment-na%C3%A3-ve-ulcerative-colitis
#18
Hagar Taman, Christopher G Fenton, Inga V Hensel, Endre Anderssen, Jon Florholmen, Ruth H Paulssen
Background and Aims: Ulcerative colitis (UC) is a chronic inflammatory disease that effects the gastrointestinal tract and is considered one of the most prominent and common forms of inflammatory bowel disease (IBD). This study aimed to define and describe the entire transcriptomic landscape in a well-stratified, treatment-naïve UC patient population compared to control patients by using next-generation technology, RNA-Seq. Methods: Mucosal biopsies from treatment-naïve UC patients (n=14), and healthy controls (n=16) underwent RNA-Seq...
October 10, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/29019857/interleukin-27-is-a-potential-rescue-therapy-for-acute-severe-colitis-through-interleukin-10-dependent-t-cell-independent-attenuation-of-colonic-mucosal-innate-immune-responses
#19
Mairi H McLean, Caroline Andrews, Miranda L Hanson, Walter A Baseler, Miriam R Anver, Emilee Senkevitch, Aleksandra K Staniszewska, Christopher Smith, Luke C Davies, Julie Hixon, Wenqeng Li, Wei Shen, Lothar Steidler, Scott K Durum
BACKGROUND: If treatment with intravenous steroids fail, inflammatory bowel disease patients with acute severe colitis face systemic anti-tumor necrosis factor biologic rescue therapy or colectomy. Interleukin (IL)-27 is a cytokine with an immunosuppressive role in adaptive immune responses. However, the IL-27 receptor complex is also expressed on innate immune cells, and there is evidence that IL-27 can impact the function of innate cell subsets, although this particular functionality in vivo is not understood...
November 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28993983/skin-manifestations-associated-with-autoimmune-liver-diseases-a-systematic-review
#20
REVIEW
Benedetta Terziroli Beretta-Piccoli, Pietro Invernizzi, M Eric Gershwin, Carlo Mainetti
Autoimmune liver diseases, which include mainly autoimmune hepatitis, primary biliary cholangitis, primary sclerosing cholangitis, and the variant syndromes, are often associated with extrahepatic autoimmune diseases. However, the association with cutaneous diseases is less well described. In the present article, we provide a systematic literature review on skin manifestations linked to each of these four autoimmune liver diseases, excluding skin manifestations of systemic diseases. The association of autoimmune hepatitis with vitiligo is well known, with a particular striking association with type 2 autoimmune hepatitis, a condition occurring almost entirely in children and adolescents, much rarer and more aggressive than type 1 autoimmune hepatitis; probable associations are also identified with alopecia areata, psoriasis, and pyoderma gangrenosum...
December 2017: Clinical Reviews in Allergy & Immunology
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