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https://www.readbyqxmd.com/read/28901668/dilatation-of-the-ductus-arteriosus-by-diazoxide-in-fetal-and-neonatal-rats
#1
Katsuaki Toyoshima, Kazuo Momma, Tetsuko Ishii, Toshio Nakanishi
BACKGROUND: Diazoxide, an ATP-sensitive potassium channel opener, is the main therapeutic agent for treating hyperinsulinemic hypoglycemia. We aimed to determine the in vivo ductus-dilating effects of diazoxide in fetal and neonatal rats. METHODS: Near-term rat pups delivered via a cesarean section were housed at 33°C. After rapid whole-body freezing, The ductus arteriosus (DA) diameter was measured using a microscope and a micrometer. Full-term pregnant rats (gestational day 21) were intraperitoneally injected with diazoxide (10 and 100 mg/kg) 4 h before delivery, and the neonatal DA diameter was measured at 0, 30, or 60 min after birth...
September 13, 2017: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/28900537/protective-effect-of-two-extracts-of-cydonia-oblonga-miller-quince-fruits-on-gastric-ulcer-induced-by-indomethacin-in-rats
#2
Morteza Parvan, Sayed-Ebrahim Sajjadi, Mohsen Minaiyan
BACKGROUND: In various studies, Cydonia oblonga Miller (quince) has been reported to have many properties such as antioxidant and anti-ulcerative effects. This study has aimed to investigate the protective effects of quince aqueous extract (QAE) and quince hydroalcoholic extract (QHE) on gastric ulcer caused by indomethacin and the relevant macroscopic, histopathology, and biochemical factors in rats. METHODS: Ten groups of male Wistar rats, six in each, were used in this study...
2017: International Journal of Preventive Medicine
https://www.readbyqxmd.com/read/28899726/benefit-risk-of-corticosteroids-in-acute-gout-patients-an-updated-meta-analysis-and-economic-evaluation
#3
Dehong Sun, Xiaosong Ma, Chuansheng Li, Jie Ying, Youde Yan
The efficacy, safety and health-economic outcomes were compared between corticosteroid and non-corticosteroid treatments in acute gout patients. All electronic literatures comparing the curative effects or full economic evaluations of corticosteroids versus non-corticosteroids on acute pain in acute gout patients and published until June 30, 2017 in any language were searched through PubMed, EMBASE, Web of Science, and Cochrane Central Register of Controlled Trials. Pooled oddsratios with 95% confidence intervals and standard(or weighted) mean difference were calculated using random-or fixed-effects models according to the I(2) statistic test of heterogeneity...
September 9, 2017: Steroids
https://www.readbyqxmd.com/read/28893625/improvement-in-the-water-solubility-of-drugs-with-a-solid-dispersion-system-by-spray-drying-and-hot-melt-extrusion-with-using-the-amphiphilic-polyvinyl-caprolactam-polyvinyl-acetate-polyethylene-glycol-graft-copolymer-and-d-mannitol
#4
Noriko Ogawa, Tomoki Hiramatsu, Ryohei Suzuki, Ryohei Okamoto, Kohei Shibagaki, Kosuke Fujita, Chisato Takahashi, Yoshiaki Kawashima, Hiromitsu Yamamoto
The aim of this study was to prepare and characterize solid dispersion particles with a novel amphiphilic polyvinyl caprolactam-polyvinyl acetate-polyethylene glycol graft copolymer, as a water-soluble carrier. Solid dispersion particles were prepared by hot-melt extrusion and spray drying. Indomethacin (IMC) was used as a model comprising drugs with low solubility in water and d-mannitol (MAN) was used as an excipient. The physicochemical properties of prepared particles were characterized by scanning electron microscopy, thermal analysis, powder X-ray diffraction (PXRD) analysis, FTIR spectra analysis, and drug release studies...
September 8, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28890173/spray-drying-of-poorly-soluble-drugs-from-aqueous-arginine-solution
#5
Rami Ojarinta, Louise Lerminiaux, Riikka Laitinen
Co-amorphous drug-amino acid mixtures have shown potential for improving the solid-state stability and dissolution behavior of amorphous drugs. In previous studies, however these mixtures have been produced mainly with small-scale preparation methods, or with methods that have required the use of organic solvents or other dissolution enhancers. In the present study, co-amorphous ibuprofen-arginine and indomethacin-arginine mixtures were spray dried from water. The mixtures were prepared at two drug-arginine molar ratios (1:1 and 1:2)...
September 8, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28887458/increased-15-pgdh-expression-leads-to-dysregulated-resolution-responses-in-stromal-cells-from-patients-with-chronic-tendinopathy
#6
Stephanie G Dakin, Lucy Ly, Romain A Colas, Udo Oppermann, Kim Wheway, Bridget Watkins, Jesmond Dalli, Andrew J Carr
The mechanisms underpinning the failure of inflammation to resolve in diseased musculoskeletal soft tissues are unknown. Herein, we studied bioactive lipid mediator (LM) profiles of tendon-derived stromal cells isolated from healthy donors and patients with chronic tendinopathy. Interleukin(IL)-1β treatment markedly induced prostaglandin biosynthesis in diseased compared to healthy tendon cells, and up regulated the formation of several pro-resolving mediators including 15-epi-LXA4 and MaR1. Incubation of IL-1β stimulated healthy tendon cells with 15-epi-LXA4 or MaR1 down-regulated PGE2 and PGD2 production...
September 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28883726/doxorubicin-loaded-redox-responsive-micelles-based-on-dextran-and-indomethacin-for-resistant-breast-cancer
#7
Yunfang Zhou, Shuanghu Wang, Xuhua Ying, Yifan Wang, Peiwu Geng, Aiping Deng, Zhihong Yu
Multidrug resistance (MDR) against chemotherapeutic agents has become one of the major obstacles to successful cancer therapy and MDR-associated proteins (MRPs)-mediated drug efflux is the key factor for MDR. In this study, a redox-responsive polymer based on dextran (DEX) and indomethacin (IND), which could reduce MRPs-mediated efflux of chemotherapeutics, was synthesized, and the obtained polymer could spontaneously form stable micelles with well-defined core-shell structure and a uniform size distribution with an average diameter of 50 nm and effectively encapsulate doxorubicin (DOX); the micelles contain a disulfide bridge (cystamine, SS) between IND and DEX (DEX-SS-IND)...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28883476/measurement-of-gut-permeability-using-fluorescent-tracer-agent-technology
#8
Richard B Dorshow, Carla Hall-Moore, Nurmohammad Shaikh, Michael R Talcott, William A Faubion, Thomas E Rogers, Jeng Jong Shieh, Martin P Debreczeny, James R Johnson, Roy B Dyer, Ravinder J Singh, Phillip I Tarr
The healthy gut restricts macromolecular and bacterial movement across tight junctions, while increased intestinal permeability accompanies many intestinal disorders. Dual sugar absorption tests, which measure intestinal permeability in humans, present challenges. Therefore, we asked if enterally administered fluorescent tracers could ascertain mucosal integrity, because transcutaneous measurement of differentially absorbed molecules could enable specimen-free evaluation of permeability. We induced small bowel injury in rats using high- (15 mg/kg), intermediate- (10 mg/kg), and low- (5 mg/kg) dose indomethacin...
September 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28878772/lactobacillus-plantarum-strains-can-enhance-human-mucosal-and-systemic-immunity-and-prevent-non-steroidal-anti-inflammatory-drug-induced-reduction-in-t-regulatory-cells
#9
Paul de Vos, Zlatan Mujagic, Bart J de Haan, Roland J Siezen, Peter A Bron, Marjolein Meijerink, Jerry M Wells, Ad A M Masclee, Mark V Boekschoten, Marijke M Faas, Freddy J Troost
Orally ingested bacteria interact with intestinal mucosa and may impact immunity. However, insights in mechanisms involved are limited. In this randomized placebo-controlled cross-over trial, healthy human subjects were given Lactobacillus plantarum supplementation (strain TIFN101, CIP104448, or WCFS1) or placebo for 7 days. To determine whether L. plantarum can enhance immune response, we compared the effects of three stains on systemic and gut mucosal immunity, by among others assessing memory responses against tetanus toxoid (TT)-antigen, and mucosal gene transcription, in human volunteers during induction of mild immune stressor in the intestine, by giving a commonly used enteropathic drug, indomethacin [non-steroidal anti-inflammatory drug (NSAID)]...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28878301/epa-dha-6-1-prevents-angiotensin-ii-induced-hypertension-and-endothelial-dysfunction-in-rats-role-of-nadph-oxidase-and-cox-derived-oxidative-stress
#10
Zahid Rasul Niazi, Grazielle C Silva, Thais Porto Ribeiro, Antonio J León-González, Mohamad Kassem, Abdur Mirajkar, Azhar Alvi, Malak Abbas, Faraj Zgheel, Valérie B Schini-Kerth, Cyril Auger
Eicosapentaenoic acid:docosahexaenoic acid (EPA:DHA) 6:1, an omega-3 polyunsaturated fatty acid formulation, has been shown to induce a sustained formation of endothelial nitric oxide (NO) synthase-derived NO, a major vasoprotective factor. This study examined whether chronic intake of EPA:DHA 6:1 prevents hypertension and endothelial dysfunction induced by angiotensin II (Ang II) in rats. Male Wister rats received orally corn oil or EPA:DHA 6:1 (500 mg kg(-1) per day) before chronic infusion of Ang II (0...
September 7, 2017: Hypertension Research: Official Journal of the Japanese Society of Hypertension
https://www.readbyqxmd.com/read/28877347/sex-differences-in-the-role-of-phospholipase-a2-dependent-arachidonic-acid-pathway-in-the-perivascular-adipose-tissue-function-in-pigs
#11
Abdulla A Ahmad, Michael D Randall, Richard E Roberts
Previous studies have demonstrated that perivascular adipose tissue (PVAT) causes vasoconstriction. In this present study, we determined the role of cyclooxygenase-derived prostanoids in this contractile response and determined whether there were any sex differences in the regulation of vascular tone by PVAT. Contractions in isolated segments of coronary arteries were determined using isolated tissue baths and isometric tension recording. Segments were initially cleaned of PVAT, which was then re-added to the tissue bath and changes in tone measured over 1 h...
September 6, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28870768/sponge-like-microparticles-for-drug-delivery-and-cosmeto-textile-use-formulation-and-human-skin-penetration
#12
Nadiah Zafar, Sophie Robin, Céline Viennet, Philippe Humbert, Jean Pierre Valour, Geraldine Agusti, Hatem Fessi, Abdelhamid Elaissari
This unique work is targeted to achieve three main goals: i) to enhance the aqueous solubility of three specifically selected hydrophobic active agents, ii) to prepare such polymeric biodegradable microparticles which can encapsulate actives-cyclodextrin complexes and iii) to functionalize a polyamide base textile with active loaded microparticles and active-cyclodextrin loaded microparticles. To achieve this objective, biodegradable cationic microparticles were prepared via double emulsion solvent evaporation process and were loaded with hydroxypropyl-beta-cyclodextrin based complexes of Indomethacin, α-tocopheroland Lauryl Isoquinolinium Bromide during the formulation process...
September 1, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28867183/indomethacin-inhabits-the-nlrp3-inflammasome-pathway-and-protects-severe-acute-pancreatitis-in-mice
#13
Guotao Lu, Yiyuan Pan, Abudurexiti Kayoumu, Ling Zhang, Tao Yin, Zhihui Tong, Baiqiang Li, Weiming Xiao, Yanbing Ding, Weiqin Li
Clinical studies have confirmed that indomethacin (Indo) can reduce the incidence and severity of post-endoscopicretrogradecholangio-pancreatography pancreatitis (PEP) effectively. However, the role of Indo on severe acute pancreatitis (SAP) is not clear. In the present study, we aimed to explore the effects of Indo treatment on SAP model induced by caerulein combined with lipopolysaccharide. After intraperitoneal injection of Indo in mice, both the severity of SAP and the serum levels of amylase, lipase, and proinflammatory cytokines were decreased...
August 31, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28858661/skin-permeability-and-transdermal-delivery-route-of-50-nm-indomethacin-loaded-plga-nanoparticles
#14
Issei Takeuchi, Takaaki Suzuki, Kimiko Makino
Recently, nano-seized systems for transdermal delivery have attracted attention. To efficiently deliver drugs to hair follicles, we focused on poly(DL-lactide-co-glycolide) (PLGA) nanoparticles prepared using a combination of an antisolvent diffusion method with preferential solvation. The PLGA nanoparticles prepared using this method are suitable for iontophoresis because of their high surface charge number density. It has been reported that PLGA nanoparticles were delivered to hair follicles by applying iontophoresis, however research on PLGA nanoparticles with a size of less than 100nm was lacking...
August 4, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28856444/mechanisms-of-curcumin-induced-gastroprotection-against-ethanol-induced-gastric-mucosal-lesions
#15
Renata Czekaj, Jolanta Majka, Katarzyna Magierowska, Zbigniew Sliwowski, Marcin Magierowski, Robert Pajdo, Agata Ptak-Belowska, Marcin Surmiak, Slawomir Kwiecien, Tomasz Brzozowski
BACKGROUND: Curcumin, a pleiotropic substance used for centuries in traditional medicine, exhibits antioxidant, anti-inflammatory and antiproliferative efficacy against various tumours, but the role of curcumin in gastroprotection is little studied. We determined the effect of curcumin against gastric haemorrhagic lesions induced by 75% ethanol and alterations in gastric blood flow (GBF) in rats with cyclooxygenase-1 (COX-1) and COX-2 activity inhibited by indomethacin, SC-560 or rofecoxib, inhibited NO-synthase activity, capsaicin denervation and blockade of TRPV1 receptors by capsazepine...
August 30, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/28854896/acute-rhabdomyolysis-and-delayed-pericardial-effusion-in-an-italian-patient-with-ebola-virus-disease-a-case-report
#16
Emanuele Nicastri, Antonio Brucato, Nicola Petrosillo, Gianluigi Biava, Timothy M Uyeki, Giuseppe Ippolito
BACKGROUND: During the 2013-2016 West Africa Ebola virus disease (EVD) epidemic, some EVD patients, mostly health care workers, were evacuated to Europe and the USA. CASE PRESENTATION: In May 2015, a 37-year old male nurse contracted Ebola virus disease in Sierra Leone. After Ebola virus detection in plasma, he was medically-evacuated to Italy. At admission, rhabdomyolysis was clinically and laboratory-diagnosed and was treated with aggressive hydration, oral favipiravir and intravenous investigational monoclonal antibodies against Ebola virus...
August 30, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28854518/intestinal-perforation-in-the-premature-infant
#17
K Ongbhavit, M A Underwood
OBJECTIVE: To compare demographic data, prenatal and postnatal characteristics, laboratory data, and outcomes in a cohort of premature infants with spontaneous ileal perforation (SIP), surgical necrotizing enterocolitis (sNEC) and matched controls. METHODS: A retrospective case-control study of infants with intestinal perforation with a birth weight (BW) less than 2,000 grams and gestational age (GA) less than 34 weeks and infants without perforation matched for BW (±150 grams) and GA (±1week)...
August 23, 2017: Journal of Neonatal-perinatal Medicine
https://www.readbyqxmd.com/read/28846758/noninvasive-vagus-nerve-stimulation-for-treatment-of-indomethacin-sensitive-headaches
#18
Amy R Tso, Juana Marin, Peter J Goadsby
No abstract text is available yet for this article.
August 28, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28844901/impact-of-eudragit-epo-and-hydroxypropyl-methylcellulose-on-drug-release-rate-supersaturation-precipitation-outcome-and-redissolution-rate-of-indomethacin-amorphous-solid-dispersions
#19
Tian Xie, Wei Gao, Lynne S Taylor
The purpose of this work was to evaluate the impact of polymer(s) on the dissolution rate, supersaturation and precipitation of indomethacin amorphous solid dispersions (ASD), and to understand the link between precipitate characteristics and redissolution kinetics. The crystalline and amorphous solubilities of indomethacin were determined in the absence and presence of hydroxypropylmethyl cellulose (HPMC) and/or Eudragit (®) EPO to establish relevant phase boundaries. At acidic pH, HPMC could maintain supersaturation of the drug by effectively inhibiting solution crystallization while EPO increased both the crystalline and amorphous solubility of the drug, but did not inhibit crystallization...
August 24, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28843854/neuromedin-u-precursor-related-peptide-nurp-exerts-neuromedin-u-like-sympathetic-nerve-action-in-the-rat
#20
Takuya Ensho, Keisuke Maruyama, Kenji Mori, Mikiya Miyazato, Kenji Kangawa, Keiko Nakahara, Noboru Murakami
It has been suggested that novel peptide that is produced from the neuromedin U (NMU) precursor may exist, as this precursor contains multiple consensus sequences for proteolytic processing. Recently, we identified two mature novel peptides comprising 33 and 36 residues in the rat brain, which were designated neuromedin U precursor-related peptide (NURP) 33 and 36. In the present study, we compared the roles of NURP33 and 36 with that of NMU, as neither activates the NMU receptors. Immunoreactivity for NMU and NURPs was widely present in the central nervous system and showed a similar distribution...
August 24, 2017: Biochemical and Biophysical Research Communications
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