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https://www.readbyqxmd.com/read/23216607/hemin-ameliorates-indomethacin-induced-small-intestinal-injury-in-mice-through-the-induction-of-heme-oxygenase-1
#1
Hiroyuki Yoriki, Yuji Naito, Tomohisa Takagi, Katsura Mizusima, Yasuko Hirai, Akihito Harusato, Shinya Yamada, Toshifumi Tsuji, Munehiro Kugai, Akifumi Fukui, Yasuki Higashimura, Kazuhiko Katada, Kazuhiro Kamada, Kazuhiko Uchiyama, Osamu Handa, Nobuaki Yagi, Hiroshi Ichikawa, Toshikazu Yosikawa
BACKGROUND AND AIM: Although non-steroidal anti-inflammatory drugs can induce intestinal injury, the mechanisms are not fully understood, and treatment has yet to be established. Heme oxygenase-1 (HO-1) has recently gained attention for anti-inflammatory and cytoprotective effects. This study aimed to investigate the effects of hemin, an HO-1 inducer, on indomethacin-induced enteritis in mice. METHODS: Enteritis was induced by single subcutaneous administration of indomethacin (10 mg/kg) in male C57BL/6 mice...
April 2013: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/23041058/dietary-phytochemicals-and-cancer-prevention-nrf2-signaling-epigenetics-and-cell-death-mechanisms-in-blocking-cancer-initiation-and-progression
#2
REVIEW
Jong Hun Lee, Tin Oo Khor, Limin Shu, Zheng-Yuan Su, Francisco Fuentes, Ah-Ng Tony Kong
Reactive metabolites from carcinogens and oxidative stress can drive genetic mutations, genomic instability, neoplastic transformation, and ultimately carcinogenesis. Numerous dietary phytochemicals in vegetables/fruits have been shown to possess cancer chemopreventive effects in both preclinical animal models and human epidemiological studies. These phytochemicals could prevent the initiation of carcinogenesis via either direct scavenging of reactive oxygen species/reactive nitrogen species (ROS/RNS) or, more importantly, the induction of cellular defense detoxifying/antioxidant enzymes...
February 2013: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/21677910/service-implications-of-implementing-guidance-for-oral-bowel-cleansing-agents-in-colonoscopy
#3
P K Flanagan, M S Ahmed, S M Tin, S Sarkar
INTRODUCTION: Bowel preparation has led to serious adverse events. Consequently, regulatory and advisory bodies have issued guidance,including a risk stratification of patients,aiming to minimise this risk. AIMS: To determine the impact of the new guidance on our current practice of Picolax used in colonoscopy with regard to patient stratification,compliance and service implementation. METHODS: Patients listed for day case colonoscopy during October 2009 were audited using data from the hospital and endoscopy databases...
June 2011: Journal of the Royal College of Physicians of Edinburgh
https://www.readbyqxmd.com/read/21638156/acute-tubulointerstitial-nephritis
#4
REVIEW
Tim Ulinski, Anne-Laure Sellier-Leclerc, Elena Tudorache, Albert Bensman, Bilal Aoun
Acute tubulointerstitial nephritis (TIN) is a frequent cause of acute renal failure, characterised by the presence of inflammatory cell infiltrate in the interstitium of the kidney. Immuno-allergic reaction to certain medications, mainly non-steroidal anti-inflammatory drugs and antibiotics are by far the most important etiology for TIN today, but other situations such as infections, toxins, and vasculitis are known to induce TIN. Incidence of TIN is increasing, probably due to prescription habits and NSAID overuse, representing 3-7% of acute kidney injury in biopsies in children...
July 2012: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/18937168/dietary-cancer-chemopreventive-agents-targeting-inflammation-and-nrf2-signaling-pathway
#5
REVIEW
Tin Oo Khor, Siwang Yu, Ah-Ng Kong
Accumulating epidemiological and clinical evidence shows that chronic inflammation plays a critical role in neoplastic transformation and progression. Long-term users of selective cycloxygenase-2 (Cox-2) inhibitors (coxibs) and non-steroidal anti-inflammatory drugs (NSAIDs) have been reported to have a reduced risk of developing colorectal cancer. However, the adverse gastrointestinal and cardiovascular side effects associated with these drugs have limited their routine use for cancer chemoprevention. Basic leucine zipper (bZIP) protein Nrf2, a key transcription factor mediating the antioxidant response is an important modulator of tumor susceptibility in mouse models...
October 2008: Planta Medica
https://www.readbyqxmd.com/read/15911218/azd3582-increases-heme-oxygenase-1-expression-and-antioxidant-activity-in-vascular-endothelial-and-gastric-mucosal-cells
#6
Georg Berndt, Nina Grosser, Janet Hoogstraate, Henning Schröder
AZD3582 [4-(nitrooxy)-butyl-(2S)-2-(6-methoxy-2-naphthyl)-propanoate] is a COX-inhibiting nitric oxide donator (CINOD). Incubation of human endothelial cells (derived from umbilical cord) with AZD3582 (10-100muM) led to increased expression of heme oxygenase (HO)-1 mRNA and protein. Heme oxygenase-1 (HO-1) is a crucial mediator of antioxidant and tissue-protective actions. In contrast, naproxen (a non-selective NSAID) and rofecoxib (a selective inhibitor of COX-2), did not affect HO-1 expression. Pre-treating endothelial cells with AZD3582 at concentrations that were effective at inducing HO-1 also reduced NADPH-dependent production of oxygen radicals...
June 2005: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/15789535/-tubulointerstitial-nephritis-associated-with-treatment-with-selective-cox-2-inhibitors-celecoxib-and-rofecoxib
#7
M Ortiz, C Mon, M J Fernández, R Sánchez, F Mampaso, F Alvarez Ude
The nephrotoxic effect of nonselective nonsteroidal anti-inflamatory drugs (NSAIDS) has been widely described. The main benefit of the Cox-2 inhibitors in relation to the NSAIDS is the production of a very similar analgesic effect, but with fewer gastrointestinal side effects. However, their effects on renal function are little known as yet and their long-term safety is still pending definition. The use of selective Cox-2 inhibitors as anti-inflamatory analgesic is becoming more and more common in our environment...
2005: Nefrología: Publicación Oficial de la Sociedad Española Nefrologia
https://www.readbyqxmd.com/read/14518892/efficient-intermolecular-oxidative-radical-alkylation-of-heteroaromatic-systems-under-tin-free-conditions
#8
Yazmin M Osornio, Raymundo Cruz-Almanza, Vicente Jiménez-Montaño, Luis D Miranda
Novel and efficient radical alkylation of several heterocyclic systems including pyrroles, indoles, furan and thiophenes is described using xanthate based radical chemistry. The present methodology could be used to provide rapid access to various nonsteroidal antiinflammatory drugs.
September 21, 2003: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/12112002/nitric-oxide-and-prostaglandin-e2-participate-in-lipopolysaccharide-interferon-gamma-induced-heme-oxygenase-1-and-prevent-raw264-7-macrophages-from-uv-irradiation-induced-cell-death
#9
Yen-Chou Chen, Shing-Chuan Shen, Woan-Ruoh Lee, Hui-Yi Lin, Ching-Huai Ko, Tony J F Lee
Induction of heme oxygenase (HO)-1 during inflammation has been demonstrated in many cell types, but the contribution of inflammatory molecules nitric oxide (NO) and prostaglandin E(2) (PGE(2)) has remained unresolved. Here we show that NO donors including sodium nitroprusside (SNP) and spermine nonoate (SP-NO), and PGE(2) significantly stimulate HO-1 expression in RAW264.7 macrophages, associated with alternative induction on NO and PGE(2) in medium, respectively. NO donors also show the inductive effect on cyclo-oxygenase 2 protein and PGE(2) production...
2002: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/11165371/a-murine-model-of-opioid-induced-hyperalgesia
#10
X Li, M S Angst, J D Clark
Controversies surround the possible long-term physiological and psychological consequences of opioid use. Analgesic tolerance and addiction are commonly at the center of these controversies, but other concerns exist as well. A growing body of evidence suggests that hyperalgesia caused by the chronic administration of opioids can occur in laboratory animals and in humans. In these studies we describe a murine model of opioid-induced hyperalgesia (OIH). After the treatment of mice for 6 days with implanted morphine pellets followed by their removal, both thermal hyperalgesia and mechanical allodynia were documented...
January 31, 2001: Brain Research. Molecular Brain Research
https://www.readbyqxmd.com/read/9266337/enantiospecific-inhibition-of-ligature-induced-periodontitis-in-beagles-with-topical-s-ketoprofen
#11
COMPARATIVE STUDY
D W Paquette, J P Fiorellini, G Martuscelli, R J Oringer, T H Howell, J R McCullough, D S Reasner, R C Williams
Systemic and topical administration of non-steroidal anti-inflammatory drugs (NSAIDs) has been shown to reduce periodontal disease progression in both animal models and human subjects. Our present research focuses on single enantiomers of these agents to examine whether enantiospecific therapy will be efficacious in slowing periodontitis. The purpose of this study was to evaluate the inhibitory effects of (S)-ketoprofen on experimentally induced alveolar bone loss in beagle dogs. 16, 18-month-old, female beagles were brought to optimal periodontal health over a 2-week pretreatment period...
August 1997: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/2888943/blood-and-protein-loss-via-small-intestinal-inflammation-induced-by-non-steroidal-anti-inflammatory-drugs
#12
I Bjarnason, G Zanelli, P Prouse, P Smethurst, T Smith, S Levi, M J Gumpel, A J Levi
Nearly three-quarters of patients on long-term treatment with non-steroidal anti-inflammatory drugs (NSAIDs) have small-intestinal inflammation, the consequences of which are largely unknown. Two potentially important complications, blood and protein loss from the small intestine, have been studied. 49 patients on NSAIDs underwent study with an indium-111 labelled leucocyte technique which localises and measures intestinal inflammation. 32 patients underwent simultaneous study with technetium-99m labelled red blood cells (RBC), which showed identical sites of localisation to 111In-leucocytes in 19...
September 26, 1987: Lancet
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