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Ephedrine

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https://www.readbyqxmd.com/read/27912193/comparative-tissue-distribution-and-excretion-study-of-alkaloids-from-herba-ephedrae-radix-aconiti-lateralis-extracts-in-rats
#1
Mengyue Ren, Shuai Song, Dedong Liang, Weiting Hou, Xiaomei Tan, Jiabo Luo
Herba Ephedrae-Radix Aconiti Lateralis, composed of Ephedrae (Mahuang in Chinese) and Radix Aconiti Lateralis (Fuzi in Chinese), is a classical herbal combination proven to be effective in treating common cold, asthma, and rheumatoid arthritis. Alkaloids, bioactive components of the herbal extract, have been associated with many side effects. Nine alkaloids, including norephedrine, norpseudoephedrine, ephedrine, pseudoephedrine, methylephedrine, hypaconitine, benzoylaconine, benzoylmesaconine and benzoylhypaconine, were simultaneously quantified within 14...
November 13, 2016: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/27887830/drugs-of-abuse-and-their-metabolites-in-the-urban-rivers-of-beijing-china-occurrence-distribution-and-potential-environmental-risk
#2
Yan Zhang, Tingting Zhang, Changsheng Guo, Jiapei Lv, Zhendong Hua, Song Hou, Yuan Zhang, Wei Meng, Jian Xu
The occurrence and distribution of five drugs of abuse and their metabolites, namely, methamphetamine (METH), amphetamine (AMP), ketamine (KET), ephedrine (EPH), and hydroxylimine (HY), were investigated in the surface water in urban rivers in Beijing, China. A total of 117 surface water samples were collected from the seven rivers in the Beijing urban areas during four different seasons. Laboratory analyses revealed that EPH and METH were the most predominant drugs, with detection frequency ranging from 94% to 100% and from 65% to 100%, respectively...
November 22, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27871510/anticholinergic-premedication-to-prevent-bradycardia-in-combined-spinal-anesthesia-and-dexmedetomidine-sedation-a-randomized-double-blind-placebo-controlled-study
#3
Eun Jin Ahn, Jun Ha Park, Hyo Jin Kim, Kyung Woo Kim, Hey Ran Choi, Si Ra Bang
OBJECTIVE: When dexmedetomidine is used in patients undergoing spinal anesthesia, high incidence of bradycardia in response to parasympathetic activation is reported. Therefore, we aimed to evaluate the effectiveness of atropine premedication for preventing the incidence of bradycardia and the hemodynamic effect on patients undergoing spinal anesthesia with sedation by dexmedetomidine. DESIGN: Randomized, double-blind, placebo-controlled study. SETTING: Operating room...
December 2016: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/27862601/in-silico-synthesis-of-synthetic-receptors-a-polymerization-algorithm
#4
Todd Cowen, Mirko Busato, Kal Karim, Sergey A Piletsky
Molecularly imprinted polymer (MIP) synthetic receptors have proposed and applied applications in chemical extraction, sensors, assays, catalysis, targeted drug delivery, and direct inhibition of harmful chemicals and pathogens. However, they rely heavily on effective design for success. An algorithm has been written which mimics radical polymerization atomistically, accounting for chemical and spatial discrimination, hybridization, and geometric optimization. Synthetic ephedrine receptors were synthesized in silico to demonstrate the accuracy of the algorithm in reproducing polymers structures at the atomic level...
November 11, 2016: Macromolecular Rapid Communications
https://www.readbyqxmd.com/read/27856133/have-prohibition-policies-made-the-wrong-decision-a-critical-review-of-studies-investigating-the-effects-of-dmaa
#5
Matthew Dunn
In June 2012 DMAA (1,3-dimethylamylamine), an ephedrine-like vasoconstricting substance which had been included in many popular sports supplements, became a scheduled substance in Australia, following bans in several other countries. The underlying rationale for this ban was that DMAA use is unsafe. This paper aimed to critically review the available evidence on the acute and/or long-term harms of DMAA. Using five research databases (PubMed, Embase, ProQuest Health and Medical Complete, and Web of Science) and the key terms 'methylhexaneamine', 'DMAA', 'dimethylamylamine', '1,3-dimethylpentylamine' and '2-amino-4-methylhexane', 842 articles were identified once duplicates removed...
November 14, 2016: International Journal on Drug Policy
https://www.readbyqxmd.com/read/27846433/validated-quantification-method-for-five-ephedrines-in-dietary-supplements-using-lc-ms-ms-application-to-503-cases
#6
Jianli Zhang, Yinong Zhang, Yan Wang
Ephedrines in dietary supplements can arise from herbs or illegal adulteration so a liquid chromatography tandem mass spectrometry (LC-MS/MS) method was developed for separation and quantification of ephedrine, pseudoephedrine, norephedrine, norepseudoephedrine, and methyl-ephedrine, some of which are isomer pairs of pseudo-structures. This method includes liquid-liquid extraction of ephedrines from three typical dietary supplement matrices-solid, liquid, and oil-as well as liquid chromatographic separation...
November 9, 2016: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/27832784/antitussive-anti-pyretic-and-toxicological-evaluation-of-ma-xing-gan-shi-tang-in-rodents
#7
Yu-Chin Lin, Ching-Wen Chang, Chi-Rei Wu
BACKGROUND: Ma-Xing-Gan-Shi-Tang (abbreviated as MXGST), an important Chinese herbal prescribed for cough, bronchial inflammation and fever from pneumonia, consists of four medicinal herbs, including Ephedrae herb, Semen Pruni Armeniacae, licorice and Gypsum. These components, especially Ephedrae and Semen Pruni Armeniacae, possess antitussive activities, but they have severe adverse effects. METHODS: The pharmacological activities of MXGST extract in clinical use were investigated with citric acid-induced cough, acetylcholine/histamine-induced bronchial contraction and lipopolysaccharide (LPS)-induced fever in rodents...
November 10, 2016: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/27826967/palonosetron-induced-anaphylaxis-during-general-anesthesia-a-case-report
#8
Hyungjun Park, Kyunghwan Oh, Hoonhee Lee, Ji Hyang Lee, Sun Myoung Kang, So Young Park, Hyouk Soo Kwon, You Sook Cho, Hee Bom Moon, Tae Bum Kim
Palonosetron is a 5-hydroxytryptamine-3 (5-HT-3) receptor antagonist used for preventing postoperative nausea and vomiting. Compared with ondansetron and granisetron, it is a better drug because of prolonged action and minimal side effects. Some adverse effects of palonosetron have been reported. In this report, we describe a 37-year-old male who developed severe hypersensitivity reactions to palonosetron during surgery for kidney donation. His medical history was unremarkable, except for inguinal hernia with herniorrhaphy 8 years ago...
January 2017: Allergy, Asthma & Immunology Research
https://www.readbyqxmd.com/read/27821836/effects-of-combined-general-epidural-anesthesia-on-hemodynamics-respiratory-function-and-stress-hormone-levels-in-patients-with-ovarian-neoplasm-undergoing-laparoscopy
#9
Qiang Xu, Hao Zhang, Yan-Mei Zhu, Nian-Jun Shi
BACKGROUND The aim of this study was to evaluate the influence of combined general/epidural anesthesia (GEA) on hemodynamics, respiratory function and stress hormone levels in patients with ovarian neoplasm undergoing laparoscopy. MATERIAL AND METHODS A total of 177 patients with ovarian neoplasm (screened by inclusion/exclusion criteria) receiving laparoscopy were divided into groups G (general anesthesia alone), L1.0 (GEA with 1.0% lidocaine), and L1.5 (GEA with 1.5% lidocaine). Hemodynamics, respiratory parameters and stress hormone levels in the 3 groups were recorded and analyzed...
November 8, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/27789074/prediction-of-hypotension-during-spinal-anesthesia-for-elective-cesarean-section-by-altered-heart-rate-variability-induced-by-postural-change
#10
K Sakata, N Yoshimura, K Tanabe, K Kito, K Nagase, H Iida
BACKGROUND: Maternal hypotension is a common complication during cesarean section performed under spinal anesthesia. Changes in maternal heart rate with postural changes or values of heart rate variability have been reported to predict hypotension. Therefore, we hypothesized that changes in heart rate variability due to postural changes can predict hypotension. METHODS: A total of 45 women scheduled to undergo cesarean section under spinal anesthesia were enrolled...
September 22, 2016: International Journal of Obstetric Anesthesia
https://www.readbyqxmd.com/read/27752170/-impact-of-dexmedetomidine-sevoflurane-anesthesia-on-intraoperative-wake-up-test-in-children-patients-undergoing-scoliosis-surgery
#11
L X Quan, H X An, D X Wang
OBJECTIVE: To observe the effects of 0.4 μg/(kg×h) dose of dexmedetomidine on intra-operative wake-up test in children patients undergoing scoliosis surgery. METHODS: Sixty patients for posterior scoliosis correction (ASA I-II, aged 5-16 years) from March 2013 to April 2015 were enrolled in this prospective, double-blinded, randomized, placebo-controlled study, The patients were randomly classified into two groups to receive dexmedetomidine (group RD, n=30) or saline solution (group R, n=30)...
October 18, 2016: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/27746565/evaluation-of-antihypotensive-techniques-for-cesarean-section-under-spinal-anesthesia-rapid-crystalloid-hydration-versus-intravenous-ephedrine
#12
Kalpana Rajendra Kulkarni, Amruta Girish Naik, Sunetra Girish Deshpande
BACKGROUND: Spinal anesthesia is a preferred technique over general anesthesia for cesarean delivery. It avoids maternal airway related complications, aspiration and neonatal depression. However hypotension following spinal anesthesia can lead to decrease in uterine blood flow and neonatal hypoxia. AIMS: We aimed to evaluate the efficacy of 15 mL.kg- 1of crystalloid preloading versus prophylactic intravenous bolus of 10 mg ephedrine as an antihypotensive measure for cesarean section...
September 2016: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/27733484/determination-of-the-metabolite-of-ephedrine-4-hydroxyephedrine-by-lc-ms-ms-in-rat-urine-and-its-application-in-excretion-profiles-after-oral-administration-of-ephedra-sinica-stapf-and-processing-ephedra-sinica-stapf
#13
Jie Xu, Rui Yan
This study aims to study the changes of metabolism of Ephedra sinica Stapf caused by processing. A sensitive and rapid high-performance liquid chromatographic tandem mass spectrometry (LC-MS-MS) method was developed for the quantitation of the major metabolite of ephedrine, 4-hydroxyephedrine, utilizing lidocaine as the internal standard in rat urine. Urine samples were precipitated with acetonitrile. Chromatographic separation was achieved on an Ultimate C18 analytical column. Detection was performed by a multiple reaction monitoring mode via an electrospray ionization source operating in the positive ionization mode...
October 12, 2016: Journal of Chromatographic Science
https://www.readbyqxmd.com/read/27720613/an-open-label-randomized-controlled-clinical-trial-for-comparison-of-continuous-phenylephrine-versus-norepinephrine-infusion-in-prevention-of-spinal-hypotension-during-cesarean-delivery
#14
M C Vallejo, A F Attaallah, O M Elzamzamy, D T Cifarelli, A L Phelps, G R Hobbs, R E Shapiro, P Ranganathan
BACKGROUND: During spinal anesthesia for cesarean delivery phenylephrine is the vasopressor of choice but can cause bradycardia. Norepinephrine has both β- and α-adrenergic activity suitable for maintaining blood pressure with less bradycardia. We hypothesized that norepinephrine would be superior to phenylephrine, requiring fewer rescue bolus interventions to maintain blood pressure. METHODS: Eighty-five parturients having spinal anesthesia for elective cesarean delivery were randomized to Group P (phenylephrine 0...
August 28, 2016: International Journal of Obstetric Anesthesia
https://www.readbyqxmd.com/read/27698368/-ramassays-synergistic-enhancement-of-plasmon-free-raman-scattering-and-mass-spectrometry-for-multimodal-analysis-of-small-molecules
#15
Ivano Alessandri, Irene Vassalini, Michela Bertuzzi, Nicolò Bontempi, Maurizio Memo, Alessandra Gianoncelli
SiO2/TiO2 core/shell (T-rex) beads were exploited as "all-in-one" building-block materials to create analytical assays that combine plasmon-free surface enhanced Raman scattering (SERS) and surface assisted laser desorption/ionization (SALDI) mass spectrometry (RaMassays). Such a multi-modal approach relies on the unique optical properties of T-rex beads, which are able to harvest and manage light in both UV and Vis range, making ionization and Raman scattering more efficient. RaMassays were successfully applied to the detection of small (molecular weight, M...
October 4, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27687431/different-interventions-in-preventing-opioid-induced-cough-a-meta-analysis
#16
REVIEW
Li Shuying, Li Ping, Ni Juan, Luo Dong
BACKGROUND: Cough is one of the most common complications of opioids. Many studies have evaluated the effect of various drugs in preventing opioid-induced cough (OIC). However, there is existing controversy about those reports. The present study was performed to assess the efficacy of different interventions on OIC. METHODS: We searched the Cochrane Central Register of Controlled Trials (CENTRAL), PubMed, and Embase to identify randomized controlled trials on the efficacy of different drugs in the prevention of OIC...
November 2016: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/27687377/a-randomized-trial-comparing-prophylactic-phenylephrine-and-ephedrine-infusion-during-spinal-anesthesia-for-emergency-cesarean-delivery-in-cases-of-acute-fetal-compromise
#17
Kajal Jain, Jeetinder Kaur Makkar, Siva Subramani Vp, Shalini Gander, Praveen Kumar
BACKGROUND: Previous evidence showed that use of phenylephrine was associated with higher umbilical artery pH (UA pH) than ephedrine after elective cesarean delivery (CD). However, the best choice of vasopressor and its effect on funic gases in cases of acute fetal compromise require additional studies. METHODS: Ninety parturients showing acute fetal compromise during intrapartum period and taken up for CD (category II) under spinal anesthesia were randomized to receive prophylactic infusion of ephedrine 2...
November 2016: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/27687366/randomized-comparison-of-the-feasibility-of-three-anesthetic-techniques-for-day-case-open-inguinal-hernia-repair
#18
Pertti Pere, Jukka Harju, Pekka Kairaluoma, Veikko Remes, Päivi Turunen, Per H Rosenberg
STUDY OBJECTIVE: Comparison of local anesthetic infiltration (LAI), spinal anesthesia (SPIN) and total intravenous anesthesia (TIVA) for open inguinal herniorrhaphy. We hypothesized that patients receiving LAI could be discharged faster than SPIN and TIVA patients. DESIGN: Randomized, prospective trial. SETTING: University hospital day-surgery center. PATIENTS: 156 adult male patients (ASA 1-3) undergoing day-case open inguinal herniorrhaphy...
November 2016: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/27652229/the-drug-treatment-of-delayed-ejaculation
#19
REVIEW
Ibrahim A Abdel-Hamid, Moustafa A Elsaied, Taymour Mostafa
Delayed ejaculation (DE) is an uncommon and a challenging disorder to treat. It is often quite concerning to patients and it can affect psychosocial well-being. Here we reviewed how DE is treated pharmacologically .We also highlighted specific settings where drugs could be introduced to medical practice. Electronic databases were searched from 1966 to February 2016, including PubMed MEDLINE, EMBASE, EBCSO Academic Search Complete, Cochrane Systematic Reviews Database, and Google Scholar using key words; delayed ejaculation, retarded ejaculation, inhibited ejaculation, drugs, treatment, or pharmacology...
August 2016: Translational Andrology and Urology
https://www.readbyqxmd.com/read/27650942/one-step-extraction-of-polar-drugs-from-plasma-by-parallel-artificial-liquid-membrane-extraction
#20
Veronika Pilařová, Mumtaz Sultani, Kristine Skoglund Ask, Lucie Nováková, Stig Pedersen-Bjergaard, Astrid Gjelstad
The new microextraction technique named parallel artificial liquid membrane extraction (PALME) was introduced as an alternative approach to liquid-liquid extraction of charged analytes from aqueous samples. The concept is based on extraction of analytes across a supported liquid membrane sustained in the pores of a thin polymeric membrane, a well-known extraction principle also used in hollow fiber liquid-phase microextraction (HF-LPME). However, the new PALME technique offers a more user-friendly setup in which the supported liquid membrane is incorporated in a 96 well plate system...
September 14, 2016: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
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