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https://www.readbyqxmd.com/read/28618761/the-effects-of-iloprost-and-alprostadil-on-ischemia-reperfusion-injury-in-preventing-inflammation-tissue-degeneration-and-apoptosis-in-rat-skeletal-muscle
#1
Elif Güneysu, Atacan Emre Koçman, Orhan Özatik, Cengiz Ovali, Betül Can, İbrahim Özkan Alataş, Mustafa Behçet Sevin
BACKGROUND/AIM: The protective effects of prostaglandin (PG) analogs on ischemia-reperfusion (I/R) have been well documented; however, comparative studies are lacking. The aim of the present study was to determine whether iloprost or alprostadil is more effective in preventing muscle I/R injury. MATERIALS AND METHODS: Thirty-two rats were divided into four groups (n = 8): sham, control, IL (I/R + iloprost), and AL (I/R + alprostadil). I/R was induced by a tourniquet in the hindlimb for 3 h/3 h...
June 12, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28608969/effect-of-iloprost-on-biomarkers-in-patients-with-congenital-heart-disease-pulmonary-arterial-hypertension
#2
Xiao-Ye Li, Yu Zheng, Yuliang Long, Xiaochun Zhang, Lei Zhang, Dan Tian, Daxin Zhou, Qian-Zhou Lv
Some biomarkers play important roles in the endothelial dysfunction of patients with pulmonary arterial hypertension (PAH), including nitric oxide (NO), endothelin-1 (ET-1), asymmetric dimethylarginine (ADMA), galectin-3 (Gal-3), B-type natriuretic peptide (BNP), and uric acid (UA). However, studies on these biomarkers in pulmonary artery blood in congenital heart disease-PAH (CHD-PAH) and the effect of iloprost on the regulation of biomarkers are lacking. This study investigated potential CHD-PAH biomarkers and their association with the severity of disease...
June 13, 2017: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/28597773/prostacyclins-have-no-direct-inotropic-effect-on-isolated-atrial-strips-from-the-normal-and-pressure-overloaded-human-right-heart
#3
Sarah Holmboe, Asger Andersen, Rebekka V Jensen, Hans Henrik Kimose, Lars B Ilkjær, Lei Shen, Lucie H Clapp, Jens Erik Nielsen-Kudsk
Prostacyclins are vasodilatory agents used in the treatment of pulmonary arterial hypertension. The direct effects of prostacyclins on right heart function are still not clarified. The aim of this study was to investigate the possible direct inotropic properties of clinical available prostacyclin mimetics in the normal and the pressure-overloaded human right atrium. Trabeculae from the right atrium were collected during surgery from chronic thromboembolic pulmonary hypertension (CTEPH) patients with pressure-overloaded right hearts, undergoing pulmonary thromboendarterectomy (n = 10) and from patients with normal right hearts operated by valve replacement or coronary bypass surgery (n = 9)...
April 2017: Pulmonary Circulation
https://www.readbyqxmd.com/read/28597762/the-safety-and-pharmacokinetics-of-rapid-iloprost-aerosol-delivery-via-the-breelib-nebulizer-in-pulmonary-arterial-hypertension
#4
Tobias Gessler, Hossein-Ardeschir Ghofrani, Matthias Held, Hans Klose, Hanno Leuchte, Horst Olschewski, Stephan Rosenkranz, Lueder Fels, Na Li, Dawn Ren, Andreas Kaiser, Marcus-Hillert Schultze-Mosgau, Bernhard Müllinger, Beate Rohde, Werner Seeger
The BREELIB nebulizer was developed for iloprost to reduce inhalation times for patients with pulmonary arterial hypertension (PAH). This multicenter, randomized, unblinded, four-part study compared inhalation time, pharmacokinetics, and acute tolerability of iloprost 5 µg at mouthpiece delivered via BREELIB versus the standard I-Neb nebulizer in 27 patients with PAH. The primary safety outcome was the proportion of patients with a maximum increase in heart rate (HR) ≥ 25% and/or a maximum decrease in systolic blood pressure ≥ 20% within 30 min after inhalation...
April 2017: Pulmonary Circulation
https://www.readbyqxmd.com/read/28547570/the-effect-of-iloprost-on-cell-proliferation-and-angiogenesis-related-gene-expression-in-human-periodontal-ligament-cells
#5
Thanomsuk Jearanaiphaisarn, Teeranuch Sanharati, Prasit Pavasant, Chalida Nakalekha Limjeerajarus
Periodontal ligament is considered a rich source of mesenchymal stem cells for pulp regeneration. This study investigated the effect of iloprost, a prostacyclin analog, on cell proliferation and the expression of angiogenesis-related genes in human periodontal ligament cells (hPDLs) in vitro. The hPDLs were treated with 10(-9)-10(-6) M iloprost for 1, 6 and 24 h. Cell proliferation was determined by an MTT assay. Vascular endothelial growth factor (VEGF), alpha-1 type I collagen (COL1), and basic fibroblast growth factor (bFGF) mRNA expression were determined by semi-quantitative and qPCR...
May 25, 2017: Odontology
https://www.readbyqxmd.com/read/28543813/inhaled-pulmonary-vasodilator-therapy-for-management-of-right-ventricular-dysfunction-after-left-ventricular-assist-device-placement-and-cardiac-transplantation
#6
Leah A Sabato, David M Salerno, Jeremy D Moretz, Douglas L Jennings
Right ventricular failure (RVF) after cardiac transplant (CTX) or implantation of a continuous-flow left ventricular assist device (CF-LVAD) is associated with significant post-operative morbidity and mortality. A variety of modalities have been used to treat post-operative RVF, including management of volume status, intravenous inotropes and vasodilators, and right-sided mechanical support. Inhaled vasodilator agents are a unique treatment option aimed at minimizing systemic absorption by delivering therapy directly to the pulmonary vasculature...
May 24, 2017: Pharmacotherapy
https://www.readbyqxmd.com/read/28524738/selexipag-a-selective-prostacyclin-receptor-agonist-in-pulmonary-arterial-hypertension-a-pharmacology-review
#7
Jesús Honorato Pérez
Pulmonary hypertension is defined by a mean pulmonary artery pressure ≥25 mm Hg at rest. Management of pulmonary arterial hypertension (PAH) includes specific drug therapy with calcium channel blockers in vasoreactive patients, or drugs approved for PAH in non-reactive patients that target the endothelin, nitric-oxide and prostacyclin pathways. Areas covered: The review covers receptor selectivity, pharmacokinetics, pharmacodynamics and adverse effects (AEs) of intravenous (IV) epoprostenol (synthetic prostacyclin); the prostacyclin analogs iloprost, beraprost, and treprostinil administered by IV, subcutaneous, inhaled or oral routes; and the oral selective prostacyclin receptor agonist selexipag...
July 2017: Expert Review of Clinical Pharmacology
https://www.readbyqxmd.com/read/28507661/bone-marrow-aspirate-concentrate-in-combination-with-intravenous-iloprost-increases-bone-healing-in-patients-with-avascular-necrosis-of-the-femoral-head-a-matched-pair-analysis
#8
Hakan Pilge, Bernd Bittersohl, Johannes Schneppendahl, Tobias Hesper, Christoph Zilkens, Martin Ruppert, Rüdiger Krauspe, Marcus Jäger
With disease progression, avascular necrosis (AVN) of the femoral head may lead to a collapse of the articular surface. The exact pathophysiology of AVN remains unclear, although several conditions are known that can result in spontaneous cell death, leading to a reduction of trabecular bone and the development of AVN. Hip AVN treatment is stage-dependent in which two main stages of the disease can be distinguished: pre-collapse (ARCO 0-II) and post-collapse stage (ARCO III-IV, crescent sign). In the pre-collapse phase, core decompression (CD), with or without the addition of bone marrow (e...
November 17, 2016: Orthopedic Reviews
https://www.readbyqxmd.com/read/28492159/iloprost-instillation-in-two-neonates-with-pulmonary-hypertension
#9
Sezin Unal, Selma Aktas, Meltem Aksu, Ibrahim M Hirfanoglu, Yildiz Atalay, Canan Turkyilmaz
Pulmonary hypertension may coexist with certain diseases in neonates. Iloprost inhalation is one of the treatments which cause selective pulmonary vasodilatation. Inhalation is not an easy way of drug administration in mechanically ventilated infants; as some exhibit desaturations during inhalation. Moreover, inhalation of drug requires cessation of mechanical ventilation, if patient is on high frequency oscillatory ventilation. We presented two patients with pulmonary hypertension; term baby with congenital diaphragmatic hernia and preterm baby with respiratory distress syndrome; who had iloprost instillation during mechanical ventilation treatment...
April 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28476928/the-selexipag-active-metabolite-act-333679-displays-strong-anti-contractile-and-anti-remodeling-effects-but-low-%C3%AE-arrestin-recruitment-and-desensitization-potential
#10
John Gatfield, Katalin Menyhart, Daniel Wanner, Carmela Gnerre, Lucile Monnier, Keith Morrison, Patrick Hess, Marc Iglarz, Martine Clozel, Oliver Nayler
Prostacyclin (PGI2) receptor (IP receptor) agonists, which are indicated for the treatment of pulmonary arterial hypertension (PAH), increase cytosolic cAMP levels and thereby inhibit pulmonary vasoconstriction, pulmonary arterial smooth muscle cell (PASMC) proliferation and extracellular matrix synthesis. Selexipag (Uptravi(®)) is the first non-prostanoid IP receptor agonist, it is available orally and was recently approved for the treatment of PAH. In this study we show that the active metabolite of selexipag and the main contributor to clinical efficacy, ACT-333679 (previously known as MRE-269), behaved as full agonist in multiple PAH-relevant receptor-distal - or downstream - cellular readouts with a maximal efficacy comparable to that of the prototypic PGI2 analog iloprost: In PASMC, ACT-333679 potently induced cellular relaxation (EC50=4...
May 5, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/28456794/synergistic-inhibition-of-delayed-rectifier-k-and-voltage-gated-na-currents-by-artemisinin-in-pituitary-tumor-gh3-cells
#11
Edmund Cheung So, Sheng-Nan Wu, Ping-Ching Wu, Hui-Zhen Chen, Chia-Jung Yang
BACKGROUND: Artemisinin (ART) is an anti-malarial agent reported to influence endocrine function. METHODS: Effects of ART on ionic currents and action potentials (APs) in pituitary tumor (GH3) cells were evaluated by patch clamp techniques. RESULTS: ART inhibited the amplitude of delayed-rectifier K+ current (IK(DR)) in response to membrane depolarization and accelerated the process of current inactivation. It exerted an inhibitory effect on IK(DR) with an IC50 value of 11...
2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28441653/effect-of-topical-iloprost-and-nitroglycerin-on-gastric-microcirculation-and-barrier-function-during-hemorrhagic-shock-in-dogs
#12
Richard Truse, Jonas Hinterberg, Jan Schulz, Anna Herminghaus, Andreas Weber, Tabea Mettler-Altmann, Inge Bauer, Olaf Picker, Christian Vollmer
BACKGROUND: Topical drug application is used to avoid systemic side effects. The aim of this study was to analyze whether locally applied iloprost or nitroglycerin influence gastric mucosal perfusion, oxygenation, and barrier function during physiological and hemorrhagic conditions. METHODS: In repeated experiments, 5 anesthetized dogs received iloprost, nitroglycerin, or normal saline during physiological and hemorrhagic (-20% blood volume) conditions. Macro- and microcirculatory variables were recorded continuously...
2017: Journal of Vascular Research
https://www.readbyqxmd.com/read/28411928/frostbite
#13
REVIEW
Charles Handford, Owen Thomas, Christopher H E Imray
Deep frostbite is a thermal injury associated with significant morbidity. Historically, this has been associated with military personnel; however, increasingly it is becoming an injury that afflicts the civilian population. The use of intravenous iloprost or intra-arterial thrombolytics has led to promising tissue salvage. This article provides an up-to-date understanding of frostbite pathophysiology, classification, prevention, and management. It also highlights the role of telemedicine in optimizing patient outcomes...
May 2017: Emergency Medicine Clinics of North America
https://www.readbyqxmd.com/read/28399721/the-prostacyclin-pathway-in-pulmonary-arterial-hypertension-a-clinical-review
#14
R Del Pozo, I Hernandez Gonzalez, P Escribano-Subias
Prostacyclin is produced in vascular endothelial cells and acts via the IP prostacyclin receptor to cause vasodilation and inhibit smooth muscle cell proliferation and platelet aggregation. Prostacyclin production is reduced in pulmonary arterial hypertension (PAH), and drugs targeting the prostacyclin pathway are one of the pharmacotherapeutic options for PAH. Areas covered: The prostacyclin pathway and drugs that target it are discussed, including synthetic prostacyclin (epoprostenol), prostacyclin analogs (iloprost, treprostinil, beraprost) and selective prostacyclin IP receptor agonists (selexipag)...
April 24, 2017: Expert Review of Respiratory Medicine
https://www.readbyqxmd.com/read/28378734/-pharmacoeconomic-aspects-of-macitentan-in-the-therapy-of-pulmonary-arterial-hypertension
#15
O M Moiseeva, A V Rudakova
AIM: To provide a pharmacoeconomic estimate of macitentan versus bosentan in therapy for pulmonary arterial hypertension (PAH). SUBJECT AND METHODS: An analysis was carried out on the basis of a social perspective for patients, whose mean age was 50 years. A budget impact analysis was performed without discounting; with the time horizon of the study being 5 years. Assessing the cost- effectiveness of endothelin receptor antagonists used a Markov model based on the meta-analysis of clinical trials...
2017: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/28373136/decreased-vasorelaxation-induced-by-iloprost-during-acute-inflammation-in-human-internal-mammary-artery
#16
Nabil Foudi, Gulsev Ozen, Yasmine Amgoud, Liliane Louedec, Christine Choqueux, Aouatef Badi, Larissa Kotelevets, Eric Chastre, Dan Longrois, Xavier Norel
Cyclooxygenase-2 (COX-2) induction in human internal mammary arteries (IMA) under inflammatory conditions has been associated with attenuated norepinephrine (NE)-induced vasoconstriction. This effect was associated with increased prostaglandin (PG) E2 and prostacyclin (PGI2) releases. The present study was designed to assess the role of these PG and their receptors (EP and IP, respectively) on the vascular reactivity during acute inflammation. Isolated IMA were cultured in the absence (Control conditions) or presence (Inflammatory conditions) of both interleukin-1 beta (IL-1β) and lipopolysaccharide (LPS)...
June 5, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28362714/iloprost-prostaglandin-e1-and-papaverine-relax-human-mesenteric-arteries-with-similar-potency
#17
Christoph Mahlke, Jens-Peter Kühn, Birger Mensel, André Schreiber, Annett Juretzko, Antje Steinbach, Olaf Grisk
OBJECTIVE: Non-occlusive mesenteric ischemia (NOMI) is accompanied by mesenteric artery spasms that are at least in part due to endothelin system activation. Acute treatment includes intra-arterial infusion of vasodilators such as iloprost, prostaglandin E1 (PGE1) and papaverine. Their effectiveness is not well characterized in human mesenteric arteries. We directly compared their potency to relax isolated human mesenteric arteries. To explore the potential of Rock inhibition to treat mesenteric artery spasms, we tested if endothelin-1 (ET-1)-induced mesenteric artery constrictions depend rho kinase (Rock)...
March 30, 2017: Shock
https://www.readbyqxmd.com/read/28341787/potential-new-treatment-for-non-freezing-cold-injury-is-iloprost-the-way-forward
#18
Anne-Marie Ionescu, Sarah Hutchinson, Mehtab Ahmad, Christopher Imray
INTRODUCTION: Non-freezing cold injury (NFCI) remains largely under-reported, and is of particular importance in the armed forces where its prevalence is greatest. Iloprost, a synthetic prostaglandin I2 analogue, has previously been used with some success in the treatment of vasospastic and freezing cold injuries, although its role in NFCI remains unclear. CASE REPORT: An Iloprost infusion was used to treat the long-term sequelae of an ex-soldier suffering with ongoing pedal pain and loss of function 20 years after the initial NFCI insult sustained on military exercise...
March 23, 2017: Journal of the Royal Army Medical Corps
https://www.readbyqxmd.com/read/28340695/long-term-follow-up-after-autologous-adipose-derived-stromal-vascular-fraction-injection-into-fingers-in-systemic-sclerosis-patients
#19
A Daumas, J Magalon, E Jouve, R Truillet, D Casanova, L Giraudo, J Veran, A Benyamine, F Dignat-George, G Magalon, F Sabatier, B Granel
INTRODUCTION: Hand involvement confers a substantial handicap in work and daily activities in patients with Systemic sclerosis (SSc). Autologous adipose-derived stromal vascular fraction is as an easily accessible source of cells with regenerative effects. We previously performed a phase I open-label clinical trial (NTC01813279) assessing the safety of subcutaneous injection of autologous adipose-derived stromal vascular fraction. Six and 12-month data have been reported. As patients were followed in our medical centre, we report their longer-term outcome beyond the end of the trial...
January 2017: Current Research in Translational Medicine
https://www.readbyqxmd.com/read/28323233/iloprost-use-in-patients-with-persistent-intestinal-ischemia-unsuitable-for-revascularization
#20
Alexandre Nuzzo, Damien Soudan, Lore Billiauws, Julie Bataille, Léon Maggiori, Maxime Ronot, Jeanick Stocco, Yoram Bouhnik, Yves Castier, Olivier Corcos
INTRODUCTION: Persistent or chronic intestinal ischemic injury (i3) can lead to severe malnutrition and acute mesenteric ischemia. Although recommended, revascularization of splanchnic arteries is sometimes unrealizable. MATERIAL AND METHODS: We report a case series of iloprost use in consecutive stable patients with persistent i3 unsuitable for revascularization followed in a tertiary care center. The feasibility of revascularization was discussed and ruled out by a multidisciplinary team, and informed consent was obtained prior to consideration of a vasoactive therapy...
March 16, 2017: Annals of Vascular Surgery
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