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https://www.readbyqxmd.com/read/27769022/tadalafil-reduces-airway-hyperactivity-and-protects-against-lung-and-respiratory-airways-dysfunction-in-a-rat-model-of-silicosis
#1
Rania R Abdelaziz, Wagdi F Elkashef, Eman Said
Silicosis is a crippling respiratory disorder characterized by massive lung inflammation and fibrosis. The current study provides evidence on the protective potential of tadalafil; a specific phosphodiesterase-5 (PDE-5) inhibitor against experimentally-induced pulmonary silicosis in rats. Silicosis was induced by intranasal instillation of crystalline silica (50mg/rat). Halofuginone hydrobromide; a standard collagen-1 synthesis inhibitor was selected as a reference anti-fibrotic. Daily oral administration of tadalafil (1mg/kg) for 8weeks significantly ameliorated silica-induced pulmonary damage...
October 18, 2016: International Immunopharmacology
https://www.readbyqxmd.com/read/27350118/in%C3%A2-vivo-pharmacological-activity-and-biodistribution-of-s-nitrosophytochelatins-after-intravenous-and-intranasal-administration-in-mice
#2
Lamia Heikal, Anna Starr, Gary P Martin, Manasi Nandi, Lea Ann Dailey
S-nitrosophytochelatins (SNOPCs) are novel analogues of S-nitrosoglutathione (GSNO) with the advantage of carrying varying ratios of S-nitrosothiol (SNO) moieties per molecule. Our aim was to investigate the in vivo pharmacological potency and biodistribution of these new GSNO analogues after intravenous (i.v.) and intranasal (i.n.) administration in mice. SNOPCs with either two or six SNO groups and GSNO were synthesized and characterized for purity. Compounds were administered i.v. or i.n. at 1 μmol NO/kg body weight to CD-1 mice...
September 30, 2016: Nitric Oxide: Biology and Chemistry
https://www.readbyqxmd.com/read/26119784/cyclic-nitroxide-radicals-attenuate-inflammation-and-hyper-responsiveness-in-a-mouse-model-of-allergic-asthma
#3
Miri Assayag, Sara Goldstein, Amram Samuni, Neville Berkman
The effects of stable cyclic nitroxide radicals have been extensively investigated both in vivo and in vitro demonstrating anti-inflammatory, radioprotective, anti-mutagenic, age-retardant, hypotensive, anti-cancer and anti-teratogenic activities. Yet, these stable radicals have not been evaluated in asthma and other airway inflammatory disorders. The present study investigated the effect of 4-hydroxy-2,2,6,6-tetramethyl-piperidine-N-oxyl (TPL) and 3-carbamoyl-proxyl (3-CP) in a mouse model of ovalbumin (OVA)-induced allergic asthma...
October 2015: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/25334334/cocaine-blues-a-case-of-drug-induced-methemoglobinemia
#4
Brent Tatsuno, Scott Oh, Jaime Betancourt
Critical Care Student/Resident Case Report Posters IIISESSION TYPE: Medical Student/Resident Case ReportPRESENTED ON: Tuesday, October 28, 2014 at 01:30 PM - 02:30 PMINTRODUCTION: Acquired methemoglobinemia has been associated with various substances including benzocaine and nitrates. We present a case of cocaine-associated methemoglobinemia attributed to an adulterant used to "cut" it.CASE PRESENTATION: A 22 year old female presented to the Emergency Department with blue skin after using intranasal cocaine...
October 1, 2014: Chest
https://www.readbyqxmd.com/read/24505053/agmatine-attenuates-silica-induced-pulmonary-fibrosis
#5
D S El-Agamy, M H Sharawy, E M Ammar
There is a large body of evidence that nitric oxide (NO) formation is implicated in mediating silica-induced pulmonary fibrosis. As a reactive free radical, NO may not only contribute to lung parenchymal tissue injury but also has the ability to combine with superoxide and form a highly reactive toxic species peroxynitrite that can induce extensive cellular toxicity in the lung tissues. This study aimed to explore the effect of agmatine, a known NO synthase inhibitor, on silica-induced pulmonary fibrosis in rats...
June 2014: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/24440358/serum-resistance-gallium-nitrate-tolerance-and-extrapulmonary-dissemination-are-linked-to-heme-consumption-in-a-bacteremic-strain-of-acinetobacter-baumannii
#6
Louis de Léséleuc, Greg Harris, Rhonda KuoLee, H Howard Xu, Wangxue Chen
Bacteremia caused by Acinetobacter baumannii is a highly lethal complication of hospital-acquired pneumonia. In the present study, we investigated the serum resistance, gallium nitrate tolerance and heme consumption of A. baumannii strain LAC-4 which was recently reported to display high virulence in a mouse pneumonia model with extrapulmonary dissemination leading to fatal bacteremia. This strain showed enhanced growth in mouse and fetal bovine serum that was independent of complement and was not observed with regular growth media...
May 2014: International Journal of Medical Microbiology: IJMM
https://www.readbyqxmd.com/read/23602676/protective-effects-of-methyl-palmitate-against-silica-induced-pulmonary-fibrosis-in-rats
#7
Maha H Sharawy, Dina S El-Agamy, Asem A Shalaby, El-Sayed M Ammar
Silicosis is one of the most prevalent chronic occupational pulmonary diseases worldwide. The present study aimed to investigate the effects of methyl palmitate on silica-induced lung fibrosis in rats and explore the possible mechanisms. Male Sprague-Dawley rats were divided into 3 groups: group I served as control and group II served as positive control where rats were intranasally instilled with a single dose of silica suspension (50mg in 0.1ml saline/rat). Rats of group III received methyl palmitate (300mg/kg, I...
June 2013: International Immunopharmacology
https://www.readbyqxmd.com/read/22972071/interventions-for-recurrent-idiopathic-epistaxis-nosebleeds-in-children
#8
REVIEW
Ali Qureishi, Martin J Burton
BACKGROUND: Recurrent idiopathic epistaxis (nosebleeds) in children is repeated nasal bleeding in patients up to the age of 16 for which no specific cause has been identified. Although nosebleeds are very common in children, and most cases are self limiting or settle with simple measures (such as pinching the nose), more severe recurrent cases can require treatment from a healthcare professional. However, there is no consensus on the effectiveness of the different clinical interventions currently used in managing this condition...
2012: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/22968433/stevioside-protects-lps-induced-acute-lung-injury-in-mice
#9
Nie Yingkun, Wang Zhenyu, Lin Jing, Lu Xiuyun, Yu Huimin
Stevioside, a diterpene glycoside component of Stevia rebaudiana, has been known to exhibit anti-inflammatory properties. To evaluate the effect and the possible mechanism of stevioside in lipopolysaccharide (LPS)-induced acute lung injury, male BALB/c mice were pretreated with stevioside or dexamethasone 1 h before intranasal instillation of LPS. Seven hours later, tumor necrosis factor-α, interleukin-1β, and interleukin-6 in bronchoalveolar lavage fluid (BALF) were measured by using enzyme-linked immunosorbent assay...
February 2013: Inflammation
https://www.readbyqxmd.com/read/22897707/protein-kinase-c-epsilon-is-important-in-modulating-organic-dust-induced-airway-inflammation
#10
Jill A Poole, Debra J Romberger, Chris Bauer, Angela M Gleason, Joseph H Sisson, Peter J Oldenburg, William W West, Todd A Wyatt
Organic dust samples from swine confinement facilities elicit pro-inflammatory cytokine/chemokine release from bronchial epithelial cells and monocytes, dependent, in part, upon dust-induced activation of the protein kinase C (PKC) isoform, PKCε. PKCε is also rapidly activated in murine tracheal epithelial cells following in vivo organic dust challenges, yet the functional role of PKCε in modulating dust-induced airway inflammatory outcomes is not defined. Utilizing an established intranasal inhalation animal model, experiments investigated the biologic and physiologic responses following organic dust extract (ODE) treatments in wild-type (WT) and PKCε knock-out (KO) mice...
October 2012: Experimental Lung Research
https://www.readbyqxmd.com/read/22409966/is-local-ointment-or-cauterization-more-effective-in-childhood-recurrent-epistaxis
#11
RANDOMIZED CONTROLLED TRIAL
Süay Ozmen, Omer Afşin Ozmen
OBJECTIVES: To compare the efficacy of nasal antiseptic ointment and silver nitrate cautery in the treatment of children with recurrent epistaxis. METHODS: In this prospective and randomized study, a hundred children with recurrent epistaxis were assigned into two groups. In group 1, patients underwent silver nitrate cauterization, in group 2 patients were treated with nasal antiseptic ointment (oxytetracycline hydrochloride-polymyxin B sulfate); and both groups were followed for 3 months...
June 2012: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/21738880/management-of-rhinitis-allergic-and-non-allergic
#12
Nguyen P Tran, John Vickery, Michael S Blaiss
RHINITIS IS A GLOBAL PROBLEM AND IS DEFINED AS THE PRESENCE OF AT LEAST ONE OF THE FOLLOWING: congestion, rhinorrhea, sneezing, nasal itching, and nasal obstruction. The two major classifications are allergic and nonallergic rhinitis (NAR). Allergic rhinitis occurs when an allergen is the trigger for the nasal symptoms. NAR is when obstruction and rhinorrhea occurs in relation to nonallergic, noninfectious triggers such as change in the weather, exposure to caustic odors or cigarette smoke, barometric pressure differences, etc...
July 2011: Allergy, Asthma & Immunology Research
https://www.readbyqxmd.com/read/21184738/specific-inhibition-of-nitric-oxide-synthases-at-different-time-points-in-a-murine-model-of-pulmonary-sepsis
#13
Matthias Lange, Atsumori Hamahata, Daniel L Traber, Yoshimitsu Nakano, Lillian D Traber, Perenlei Enkhbaatar
Excessive production of nitric oxide (NO) by NO synthase (NOS) and a subsequent oxidative stress reaction are thought to be critically involved in the pathophysiology of sepsis. Previous studies suggested that NO production by neuronal NOS (nNOS) and inducible NOS (iNOS) is implemented in the disease process at different time points after the injury. Here we tested the roles of selective pharmacological inhibition of nNOS and iNOS at different time points in a murine model of pulmonary sepsis. The injury was induced by intranasal administration of live Pseudomonas aeruginosa (3...
January 21, 2011: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/19870715/influence-of-host-factors-on-neuroinvasiveness-of-vesicular-stomatitis-virus-iii-effect-of-age-and-pathway-of-infection-on-the-character-and-localization-of-lesions-in-the-central-nervous-system
#14
A B Sabin, P K Olitsky
It will be well to restate the main problem at this point and to examine how far the accumulated data can help to elucidate it. The problem is this: Why are old mice generally resistant to all forms of peripheral inoculation of vesicular stomatitis virus when intracerebral injection is equally fatal for mice of all ages? The results of experiments in which the presence of virus was demonstrated by animal passage suggested that the reason can perhaps be found in (a) the different mechanisms of virus progression after intracerebral and peripheral injection, and (b) the development with age of localized barriers capable of halting the spread of virus (1, 2)...
January 31, 1938: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/19552583/asian-sand-dust-aggravates-allergic-rhinitis-in-guinea-pigs-induced-by-japanese-cedar-pollen
#15
Takamichi Ichinose, Kyoko Hiyoshi, Seiichi Yoshida, Hirohisa Takano, Kenichi Inoue, Masataka Nishikawa, Ikuko Mori, Hiroaki Kawazato, Aiko Yasuda, Takayuki Shibamoto
Asian sand dust (ASD) contains microbial materials, sulfate (SO(4)(2-)), and nitrate (NO(3)(-)), and is derived from air pollutants in East China. ASD reportedly causes adverse respiratory health effects; a case in point is aggravated allergen-associated experimental lung eosinophilia. Guinea pigs were administered normal saline (control), ASD (0.3 mg/animal), ASD (0.6 mg/animal), Japanese cedar pollen (JCP) (0.2 mg/kg body weight), JCP + ASD (0.3 mg/animal), or JCP + ASD (0.6 mg/animal), into their nasal cavities at seven weekly intervals...
October 2009: Inhalation Toxicology
https://www.readbyqxmd.com/read/19393409/a-double-blind-randomized-controlled-trial-of-management-of-recurrent-nosebleeds-in-children
#16
RANDOMIZED CONTROLLED TRIAL
Nicholas Calder, Swee Kang, Lyndsay Fraser, Tash Kunanandam, Jennifer Montgomery, Haytham Kubba
BACKGROUND: To establish whether a treatment regimen of silver nitrate cautery and 4 weeks of antiseptic nasal cream is superior to antiseptic cream treatment alone in the management of pediatric epistaxis. STUDY DESIGN: Double-blind randomized controlled trial. SUBJECTS AND METHODS: Children with epistaxis and visible anterior septal vessels were invited to participate. Patients were randomized to receive treatment or control. Treatment patients received silver nitrate cautery, followed by antiseptic cream for 4 weeks...
May 2009: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/19247757/intranasal-lidocaine-plus-naphazoline-nitrate-improves-surgical-conditions-and-perioperative-analgesia-in-septorhinoplasty-surgery
#17
RANDOMIZED CONTROLLED TRIAL
Marie Granier, Christophe Dadure, Sophie Bringuier, Marie-Caroline Bonnet-Boyer, Yves Ryckwaert, Estelle Loriaux, Xavier Capdevila
BACKGROUND: Septorhinoplasty is a traumatic procedure that is associated with epistaxis and postoperative pain. The primary objective of this randomized double-blind controlled trial was to determine whether intranasal 5% lidocaine plus naphazoline decreases postoperative pain and lessens the use of rescue analgesics. METHODS: After induction of general anesthesia and laryngeal topical anesthesia with 5% lidocaine, 28 adult patients, scheduled to undergo septorhinoplasty, were randomly assigned to one of two groups, either topical intranasal saline 20 ml (control group) or intranasal 5% lidocaine plus naphazoline solution 0...
February 2009: Canadian Journal of Anaesthesia, Journal Canadien D'anesthésie
https://www.readbyqxmd.com/read/19144280/breath-markers-of-oxidative-stress-and-airway-inflammation-in-seasonal-allergic-rhinitis
#18
C Gratziou, N Rovina, M Makris, D C M Simoes, A Papapetropoulos, C Roussos
Oxidative stress (OS) is well documented in asthma, but so far, little data has been reported in nonasthmatic patients with Seasonal Allergic Rhinitis (SAR). The aim of this study is to investigate the degree of OS and airway inflammation in patients with SAR, with and without concomitant asthma (SAR+A), using breath markers in exhaled air and in Exhaled Breath Condensate (EBC). In addition, the effects of natural allergen exposure and intranasal steroid treatment on these markers were evaluated. Exhaled NO (eNO) and CO, combined with measurements of 8-Isoprostane (Iso-8), Leukotriene B4 (LTB4) and nitrate/nitrite in EBC, were performed in 23 patients, 11 with SAR and 12 with SAR+A, and 16 healthy subjects...
October 2008: International Journal of Immunopathology and Pharmacology
https://www.readbyqxmd.com/read/18604050/comparison-of-chemical-cautery-agno3-and-steroid-spray-against-smd-submucosal-diathermy-in-the-treatment-of-symptomatic-inferior-turbinate-hypertrophy-ith
#19
COMPARATIVE STUDY
P Kafle, M Maharjan, S Shrestha, K C Toran
OBJECTIVE: To compare the efficacy of chemical cautery (AgNo3) and steroid nasal spray against SMD (submucosal diathermy) in the treatment of symptomatic Inferior Turbinate Hypertrophy (ITH). MATERIALS AND METHODS: Patients attending OPD in the department of ENT &HNS at KMCTH with symptomatic Inferior turbinate Hypertrophy were taken with their approval included for the study. Patients were divided into 2 Groups: in the first Group 25 patients were included and treated with chemical cautery (AgNo3) under Local Anaesthesia (LA), followed by steroid nasal spray for 3 months; in the second Group 25 patients were included and were treated with SMD (submucosal diathermy) under General Anaesthesia (GA)...
July 2007: Kathmandu University Medical Journal (KUMJ)
https://www.readbyqxmd.com/read/18431669/permeation-studies-of-indomethacin-from-different-emulsions-for-nasal-delivery-and-their-possible-anti-inflammatory-effects
#20
H Yeşim Karasulu, Z Evren Sanal, Sumru Sözer, Tamer Güneri, Gökhan Ertan
The purpose of this research was to develop an emulsion formulation of indomethacin (IND) suitable for nasal delivery. IND was incorporated into the oil phases of oil in water (O/W) and water in oil (W/O) emulsions. For this purpose, different emulsifying agents (Tween 80, Span 80 and Brij 58) were used in two emulsion formulations. When the effects of several synthetic membranes (nylon, cellulose, cellulose nitrate) were compared with the sheep nasal mucosa, the cellulose membrane and sheep nasal mucosa showed similar permeation properties for O/W emulsion (P > 0...
2008: AAPS PharmSciTech
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