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Propranolol

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https://www.readbyqxmd.com/read/28213295/determination-of-imm-h004-a-novel-neuroprotective-agent-in-rat-plasma-and-brain-tissue-by-liquid-chromatography-tandem-mass-spectrometry
#1
Ziqian Zhang, Xiangmeng Wu, Manman Zhao, Yakun Yang, Yan Wang, Jinping Hu, Baolian Wang, Li Sheng, Yan Li
A rapid and sensitive liquid chromatography-tandem mass spectrometry method for determination of IMM-H004, a novel neuroprotective agent, in rat plasma and brain was developed. Plasma and brain tissue homogenate samples containing IMM-H004 and propranolol (internal standard, IS) were prepared by using a direct protein precipitation of acetonitrile. Separation was carried out in Zorbax SB-C18 column at a flow rate of 0.3mL/min utilizing acetonitrile/water as mobile phases which contain 0.5% formic acid (v/v)...
February 6, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28212466/withdrawn-propranolol-for-migraine-prophylaxis
#2
REVIEW
Klaus Linde, Karin Rossnagel
BACKGROUND: Propranolol is one of the most commonly prescribed drugs for migraine prophylaxis. OBJECTIVES: We aimed to determine whether there is evidence that propranolol is more effective than placebo and as effective as other drugs for the interval (prophylactic) treatment of patients with migraine. SEARCH METHODS: Potentially eligible studies were identified by searching MEDLINE/PubMed (1966 to May 2003) and the Cochrane Central Register of Controlled Trials (Issue 2, 2003), and by screening bibliographies of reviews and identified articles...
February 17, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28211989/timothy-syndrome-1-genotype-without-syndactyly-and-major-extracardiac-manifestations
#3
Róbert Sepp, Lidia Hategan, Attila Bácsi, Judit Cseklye, László Környei, János Borbás, Márta Széll, Tamás Forster, István Nagy, Zoltán Hegedűs
Timothy syndrome 1 (TS1) is a rare genetic disorder characterized by multisystem abnormalities including QT prolongation, congenital heart defects, facial dysmorphism, episodic hypoglycemia, and neurological symptoms. A morphological hallmark of TS1 is syndactyly, present in all cases. TS1 is caused by the canonical p.Gly406Arg mutation in the alternatively spliced exon 8A in the CACNA1C gene, encoding for the main cardiac L-type calcium channel. A variant case of TS1 is reported. The proband had intermittent fetal bradycardia with heart rate of 72 bpm...
March 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28209080/antispasmodic-and-bronchorelaxant-activities-of-salsola-imbricata-are-mediated-through-dual-ca-2-antagonistic-and-%C3%AE-adrenergic-agonistic-effects
#4
Naveed Aslam, Khalid Hussain Janbaz
CONTEXT: Salsola imbricata Forssk. (Chenopodiaceae) has folkloric repute for the treatment of various gastrointestinal and respiratory ailments. OBJECTIVE: The present study investigates spasmolytic and bronchorelaxant effects of S. imbricata. MATERIALS AND METHODS: The crude aqueous-ethanol extract of the aerial parts of S. imbricata and its fractions, in cumulative concentrations (0.01-10 mg/mL), were tested on contractions of isolated rabbit jejunum and tracheal preparations...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/28208045/prolonged-tumour-growth-after-treatment-of-infantile-haemangioma-with-propranolol
#5
Roderic J Phillips, Catherine M Crock, Anthony J Penington, Philip S Bekhor
No abstract text is available yet for this article.
February 20, 2017: Medical Journal of Australia
https://www.readbyqxmd.com/read/28207596/a-role-for-adrenergic-receptors-in-the-uterotonic-effects-of-ergometrine-in-isolated-human-term-nonlaboring-myometrium
#6
Rebecca A Fanning, Florike Sheehan, Claire Leyden, Niamh Duffy, Luis F Iglesias-Martinez, Michael F Carey, Deirdre P Campion, John J O'Connor
BACKGROUND: Ergometrine is a uterotonic agent that is recommended in the prevention and management of postpartum hemorrhage. Despite its long-standing use, the mechanism by which it acts in humans has never been elucidated fully. The objective of this study was to investigate the role of adrenoreceptors in ergometrine's mechanism of action in human myometrium. The study examined the hypothesis that α-adrenoreceptor antagonism would result in the reversal of the uterotonic effects of ergometrine...
February 15, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28202248/possible-role-of-adrenoceptors-in-the-hypothalamic-paraventricular-nucleus-in-corticotropin-releasing-factor-induced-sympatho-adrenomedullary-outflow-in-rats
#7
Shoshiro Okada, Naoko Yamaguchi
AIMS: A functional interaction between the corticotropin-releasing factor (CRF) system and noradrenergic neurons in the brain has been suggested. In the present study, we investigated the interrelationship between the central CRF-induced elevation of plasma catecholamines and adrenoceptor activation in the paraventricular nucleus of the hypothalamus (PVN) using urethane-anesthetized rats. MAIN METHODS: In rats under urethane anesthesia, a femoral venous line was inserted for infusion of saline, and a femoral arterial line was inserted for collecting blood samples...
February 9, 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/28199788/development-of-fluorescence-surrogates-to-predict-the-photochemical-transformation-of-pharmaceuticals-in-wastewater-effluents
#8
Shuwen Yan, Bo Yao, Lushi Lian, Xinchen Lu, Shane A Snyder, Rui Li, Weihua Song
The photochemical transformation of pharmaceutical and personal care products (PPCPs) in wastewater effluents is an emerging concern for environmental scientists. In the current study, the photodegradation of 29 PPCPs was examined in effluents under simulated solar irradiation. Direct photodegradation, triplet state effluent organic matter (3EfOM*)-mediated and hydroxyl radical (HO•)-mediated degradation are three major pathways in the removal process. With the photodegradation of trace levels of PPCPs, the excitation-emission matrix (EEM) fluorescence intensities of the effluents were also gradually reduced...
February 15, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28196341/suppressing-the-endocrine-and-autonomic-stress-systems-does-not-impact-the-emotional-stress-experience-after-psychosocial-stress
#9
Nida Ali, Jonas P Nitschke, Cory Cooperman, Jens C Pruessner
Acute psychosocial stress activates the physiological and endocrine stress systems and increases the subjective emotional experience of stress. While considerable efforts have been made to link changes in the activity of the biological stress systems with changes in the subjective emotional experience of stress, results so far have been mixed, at best. To investigate this association in a study employing experimental manipulation, we pharmacologically suppressed both the autonomic and the endocrine stress responses, and investigated the effects of acute psychosocial stress on the emotional stress experience...
January 28, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28195064/catecholamines-reduce-transient-receptor-potential-vanilloid-type-1-desensitization-in-cultured-dorsal-root-ganglia-neurons
#10
A Filippi, C Caruntu, R O Gheorghe, A Deftu, B Amuzescu, V Ristoiu
Sympathetic nervous system and adrenergic receptors are involved in the modulation of dorsal root ganglia neuronal activity, with TRPV1 receptor as an important downstream effector. It is already known that adrenergic sensitization of TRPV1 receptors or catecholamine-induced TRPV1 upregulation are involved in increased excitability and pain via mainly α1 adrenergic receptors, but it is not known if reduced TRPV1 desensitization is involved in this process, as well. Therefore, the aims of this study were to evaluate the effects of epinephrine and norepinephrine on TRPV1 desensitization induced by repeated applications of capsaicin and to assess what would be the involvement of the major α1, α2 and β adrenergic receptor subtypes...
December 2016: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/28194699/efficacy-and-safety-of-2-topical-propranolol-cream-for-the-treatment-of-proliferating-infantile-strawberry-hemangiomas
#11
Yuanyuan Wang, Xingcun Zhang, Yadong Yang, Junbo Zhang, Yunchuan Yang, Yuangang Lu
OBJECTIVE: To evaluate the efficacy and safety of 2% topical propranolol cream in the treatment of proliferating infantile strawberry hemangiomas. METHODS: A total of 40 infants were enrolled; 2% propranolol cream was applied three times daily. In the subsequent monthly visit, dynamic changes in tumor size, texture, and color were recorded. The adverse events (AEs) were observed. Treatment outcomes were scored on a four-point scale. All patients were followed up for 12 mo after treatment...
February 14, 2017: Indian Journal of Pediatrics
https://www.readbyqxmd.com/read/28190620/propranolol-treatment-of-infantile-hemangioma-is-not-associated-with-psychological-problems-at-7%C3%A2-years-of-age
#12
Andre Vadimovich Moyakine, Saskia Spillekom-van Koulil, Catharina Joanna Maria van der Vleuten
BACKGROUND: Concern has been raised about the potential long-term effects of propranolol treatment for infantile hemangioma (IH). OBJECTIVES: We sought to assess psychologic (social, emotional, behavioral, and executive) functioning in children treated with propranolol for IH. METHODS: Twenty-seven patients with IH (6.1-7.6 years of age) treated with propranolol for ≥6 months during infancy, and without other developmental risk factors, were recruited...
February 9, 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28187384/study-on-the-removal-of-organic-micropollutants-from-aqueous-and-ethanol-solutions-by-hap-membranes-with-tunable-hydrophilicity-and-hydrophobicity
#13
Junyong He, Yulian Li, Xingguo Cai, Kai Chen, Hejing Zheng, Chengming Wang, Kaisheng Zhang, Dongyue Lin, Lingtao Kong, Jinhuai Liu
A biocompatible and uniquely defined hydroxyapatite (HAP) adsorption membrane with a sandwich structure was developed for the removal of organic micropollutants for the first time. Both the adsorption and membrane technique were used for the removal of organic micropollutants. The hydrophilicity and hydrophobicity of the HAP adsorbent and membrane were tunable by controlling the surface structure of HAP. The adsorption of organic micropollutants on the HAP adsorbent was studied in batch experiments. The adsorption process was fit with the Freundlich model, while the adsorption kinetics followed the pseudo-second-order model...
February 3, 2017: Chemosphere
https://www.readbyqxmd.com/read/28181258/cardiac-diastolic-and-autonomic-dysfunction-are-aggravated-by-central-chemoreflex-activation-in-hfpef-rats
#14
Camilo Toledo, David C Andrade, Claudia Lucero, Alexis Arce-Alvarez, Hugo S Díaz, Valentín Aliaga, Harold D Schultz, Noah J Marcus, Mónica Manríquez, Marcelo Faúndez, Rodrigo Del Rio
Heart failure (HF) patients with preserved ejection fraction (HFpEF) display irregular breathing, sympatho-vagal imbalance, arrhythmias, and diastolic dysfunction. It has been shown that tonic activation of central and peripheral chemoreflex pathway plays a pivotal role in the pathophysiology of HF with reduced ejection fraction. In contrast, no studies to date have addressed chemoreflex function or its effect on cardiac function in HFpEF. Therefore, we tested whether peripheral and central chemoreflexes are hyperactive in HFpEF and if chemoreflex activation exacerbates cardiac dysfunction and autonomic imbalance...
February 8, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28167291/elucidation-of-the-possible-mechanism-of-analgesic-actions-of-butanol-leaf-fraction-of-olax-subscorpioidea-oliv
#15
Saidi Odoma, Abdulkadir Umar Zezi, Nuhu Mohammed Danjuma, Abubakar Ahmed, Muhammed Garba Magaji
ETHNOPHARMACOLOGICAL RELEVANCE: Preparations of Olax subscorpioidea have been used traditionally for the management of pains, inflammatory diseases, yellow fever, cancer and rheumatism. Previously, the analgesic activity of its leaf extract have been reported. Furthermore, an analgesic assay guided fractionation showed that the butanol soluble fraction is the most active. However, the mechanism of this activity remains to be elucidated. This present study investigated the possible pharmacological mechanisms involved in the analgesic activity of the butanol leaf fraction of Olax subscorpioidea (BFOS) using the acetic acid induced writhing test in mice...
February 3, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28166447/nutrition-support-for-persistent-inflammation-immunosuppression-and-catabolism-syndrome
#16
Frederick A Moore, Stuart Phillips, Craig McClain, Jayshil J Patel, Robert Martindale
Despite tremendous advances in critical care, multiple-organ failure continues to be a significant problem. However, in recent years, far fewer patients with multiple-organ failure die early, but many experience ongoing immune dysregulation and are developing persistent inflammation, immunosuppression, and catabolism syndrome (PICS). Most PICS patients are discharged to nonhome destinations, fail to rehabilitate, and succumb to indolent death. From a nutrition perspective, patients with PICS experience persistent inflammation-induced cachexia despite evidenced-based recommended intensive care unit nutrition support...
February 1, 2017: Nutrition in Clinical Practice
https://www.readbyqxmd.com/read/28161542/vasorelaxation-effect-of-glycyrrhizae-uralensis-through-the-endothelium-dependent-pathway
#17
Chu Shan Tan, Yung Sing Ch'ng, Yean Chun Loh, Mohd Zaini Asmawi, Mariam Ahmad, Mun Fei Yam
ETHNOPHARMACOLOGICAL RELEVANCE: Glycyrrhiza uralensis (G. uralensis) is one of the herbs used in traditional Chinese medicine (TCM) and serves as an envoy medicinal. Since G. uralensis plays a major role in the anti-hypertensive TCM formulae, we believe that G. uralensis might possess vasorelaxation activity. AIM OF THE STUDY: This study is designed to investigate the vasorelaxation effect of G. uralensis from various extracts and to study its pharmacology effect...
February 1, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28160015/stimulation-of-%C3%AE-1-and-%C3%AE-2-adrenoceptors-dilates-retinal-blood-vessels-in-rats
#18
Asami Mori, Akane Sekito, Kenji Sakamoto, Kunio Ishii, Tsutomu Nakahara
Our previous studies have demonstrated that adrenaline dilates rat retinal arterioles by stimulating propranolol-sensitive β-adrenoceptors and β3-adrenoceptors, and selective stimulation of β2- or β3-adrenoceptors causes retinal vasodilator responses. In the present study, we compared the effects of β1- and β2-adrenoceptor stimulation on rat retinal arterioles in vivo. Rat ocular fundus images were captured using an original high-resolution digital fundus camera. Diameters of retinal arterioles contained in the images were measured...
February 3, 2017: Naunyn-Schmiedeberg's Archives of Pharmacology
https://www.readbyqxmd.com/read/28159810/impaired-peripheral-vasodilation-during-graded-systemic-hypoxia-in-healthy-older-adults-role-of-the-sympathoadrenal-system
#19
Jennifer C Richards, Anne R Crecelius, Dennis G Larson, Gary J Luckasen, Frank A Dinenno
Systemic hypoxia is a physiological and pathophysiological stress that activates the sympathoadrenal system and, in young adults, leads to peripheral vasodilation. We tested the hypothesis that peripheral vasodilation to graded systemic hypoxia is impaired in older healthy adults and that this age-associated impairment is due to attenuated β-adrenergic mediated vasodilation and elevated α-adrenergic vasoconstriction. Forearm blood flow was measured (Doppler ultrasound) and vascular conductance (FVC) was calculated in 12 young (24±1 yrs) and 10 older (63±2 yrs) adults to determine the local dilatory responses to graded hypoxia (90, 85, and 80% O2 saturations) in control conditions, following local intra-arterial blockade of β-receptors (propranolol), and combined blockade of α+β receptors (phentolamine + propranolol)...
February 3, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28155135/influence-of-peroxide-impurities-in-povidone-on-the-stability-of-selected-%C3%AE-blockers-with-the-help-of-hplc
#20
Saklecha Prachi, Chaudhary Komal, Mehta J Priti
A present study was conducted to investigate compatibility of β-blocker drugs( like atenolol, labetalol hydrochloride, bisoprolol fumarate, metoprolol succinate, carvedilol and propranolol hydrochloride) with the pharmaceutical excipient povidone. To check the influence of peroxide impurity present in povidone on the stability of β-blockers, a binary mixture technique has been adopted. The binary mixtures (1:1) of β-blockers with povidone excipient were stored for the duration of 6 months at accelerated conditions (40°C and 75% RH) and analyzed with the technique of high-performance liquid chromatography (HPLC)...
February 2, 2017: AAPS PharmSciTech
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