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https://www.readbyqxmd.com/read/28294544/identification-of-acetylcholinesterase-inhibitors-using-homogenous-cell-based-assays-in-quantitative-high-throughput-screening-platforms
#1
Shuaizhang Li, Ruili Huang, Samuel Solomon, Yitong Liu, Bin Zhao, Michael F Santillo, Menghang Xia
Acetylcholinesterase (AChE) is an enzyme responsible for metabolism of acetylcholine, a neurotransmitter associated with muscle movement, cognition, and other neurobiological processes. Inhibition of AChE activity can serve as a therapeutic mechanism, but also cause adverse health effects and neurotoxicity. In order to efficiently identify AChE inhibitors from large compound libraries, homogenous cell-based assays in high-throughput screening platforms are needed. In this study, a fluorescent method using Amplex Red (10-acetyl-3,7-dihydroxyphenoxazine) and the Ellman absorbance method were both developed in a homogenous format using a human neuroblastoma cell line (SH-SY5Y)...
March 14, 2017: Biotechnology Journal
https://www.readbyqxmd.com/read/28262529/effects-of-combined-prokinetic-administration-on-gastric-emptying-in-critically-ill-patients
#2
Afshin Gholipour Baradari, Mohammad Reza Khajavi, Abolfazl Firouzian, Abbas Alipour, Hojatallah Daneshpour, Yunes Panahi, Amirhossein Sahebkar
BACKGROUND AND STUDY AIMS: Combination of prokinetic drugs with different mechanisms of action is frequently used when feeding intolerance is not improved with a single agent. In this study, we evaluated the effect of combined infusion of neostigmine and metoclopramide on gastric passage in critically ill patients in the intensive care unit (ICU). PATIENTS AND METHODS: This study is a randomized double-blind controlled trial in 90 patients between 20 and 60years of age who were under mechanical ventilation and had gastric residual volumes (GRVs) >120mL 3h after the last lavage...
March 2, 2017: Arab Journal of Gastroenterology: the Official Publication of the Pan-Arab Association of Gastroenterology
https://www.readbyqxmd.com/read/28244947/intermediate-acting-nondepolarizing-neuromuscular-blocking-agents-and-risk-of-postoperative-30-day-morbidity-and-mortality-and-long-term-survival
#3
Michael R Bronsert, William G Henderson, Terri G Monk, Joshua S Richman, Jennifer D Nguyen, John T Sum-Ping, Michael P Mangione, Binh Higley, Karl E Hammermeister
BACKGROUND: Nondepolarizing neuromuscular blocking drugs (NNMBDs) are commonly used as an adjunct to general anesthesia. Residual blockade is common, but its potential adverse effects are incompletely known. This study was designed to assess the association between NNMBD use with or without neostigmine reversal and postoperative morbidity and mortality. METHODS: This is a retrospective observational study of 11,355 adult patients undergoing general anesthesia for noncardiac surgery at 5 Veterans Health Administration (VA) hospitals...
February 24, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28236862/comparison-of-the-effects-of-sugammadex-and-neostigmine-on-postoperative-nausea-and-vomiting
#4
Özgür Yağan, Nilay Taş, Tuğçe Mutlu, Volkan Hancı
BACKGROUND AND OBJECTIVES: The aim of our study is to compare the effects of sugammadex and neostigmine, used for neuromuscular blockage antagonism, on postoperative nausea and vomiting (PONV). METHODS: Our study was completed with 98 ASA I-II risk patients undergoing endotracheal intubation under general anesthesia. At the end of the surgery patients were randomly divided into two groups given 2mgkg(-1) sugammadex (Group S) or 50μgkg(-1) neostigmine plus 0.2mgkg(-1) atropine (Group N)...
March 2017: Brazilian Journal of Anesthesiology
https://www.readbyqxmd.com/read/28203767/antagonism-of-moderate-neuromuscular-block-with-sugammadex-versus-neostigmine
#5
E Muggleton, T Muggleton
No abstract text is available yet for this article.
March 1, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28185260/a-comparison-of-sugammadex-and-neostigmine-for-reversal-of-rocuronium-induced-neuromuscular-blockade-in-children
#6
RANDOMIZED CONTROLLED TRIAL
A S Ammar, K M Mahmoud, Z A Kasemy
BACKGROUND: Sugammadex is designed to be a reversal agent for steroidal muscle relaxants. The current trial was aimed to compare between sugammadex and neostigmine concerning the recovery time from neuromuscular blockade. We hypothesised that sugammadex might have shorter recovery time than neostigmine. METHODS: Sixty paediatric patients aged 2-10 years scheduled for lower abdominal surgeries were randomly assigned into two equal groups to receive 4 mg/kg sugammadex (Group S) or 0...
April 2017: Acta Anaesthesiologica Scandinavica
https://www.readbyqxmd.com/read/28183573/glycopyrrolate-it-s-time-to-review
#7
REVIEW
Jonathan Howard, Jason Wigley, Gerald Rosen, Jay D'mello
Medication shortages have become an all-too-common inconvenience that has forced anesthesia providers to examine our administering practices. Because of these shortages, commonly used medications are at the greatest risk. Glycopyrrolate (Robinul), which has been in short supply in recent years, is one of the most widely used anticholinergic agents, especially in conjunction with the anticholinesterase neostigmine, for reversal of neuromuscular blockade (NMB) drugs. Here we review multiple studies from 1972 through 1986 that used varying methods of patient selection and dosage and drug combination criteria, and which noted that glycopyrrolate had a superior efficacy and adverse effect profile when compared with atropine in NMB reversal...
February 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28169488/acetylcholinesterase-capped-mesoporous-silica-nanoparticles-controlled-by-presence-of-inhibitors
#8
Lluis Pascual, Sameh El Sayed, Maria D Marcos, Ramón Martínez-Máñez, Felix Sancenon
Two different acetylcholinesterase (AChE)-capped mesoporous silica nanoparticles (MSNs), S1-AChE and S2-AChE, were prepared and characterized. MSNs were loaded with rhodamine B and the external surface was functionalized with either pyridostigmine derivative P1 (to yield solid S1) or neostigmine derivative P2 (to obtain S2). The final capped materials were obtained by coordinating grafted P1 or P2 with AChE's active sites (to give S1-AChE and S2-AChE, respectively). Both materials were able to release rhodamine B in the presence of diisopropylfluorophosphate (DFP) or neostigmine in a concentration-dependent manner via the competitive displacement of AChE through DFP and neostigmine coordination with the AChE`s active sites...
February 7, 2017: Chemistry, An Asian Journal
https://www.readbyqxmd.com/read/28166991/effect-of-neostigmine-on-contractility-of-equine-pre-ovulatory-follicles-an-in%C3%A2-vitro-study
#9
M Piccinno, A Rizzo, G Cariello, R L Sciorsci
In this study, the Authors investigated the modulatory effect of three single doses (10(-6), 10(-5), and 10(-4) M) of neostigmine on the spontaneous contractility of equine pre-ovulatory follicles in an isolated organ bath, to establish the relationship between this acetylcholinesterase inhibitor and ovulation, in the mare. The results indicate that neostigmine increases pre-ovulatory contractility in equine follicles at each dose, but in a different manner. Indeed, the rise in contractility induced by neostigmine at 10(-6) M and 10(-4) M was phasic, while at 10(-5) M it was tonic...
March 1, 2017: Theriogenology
https://www.readbyqxmd.com/read/28138054/bites-by-the-monocled-cobra-naja-kaouthia-in-chittagong-division-bangladesh-epidemiology-clinical-features-of-envenoming-and-management-of-70-identified-cases
#10
M A Faiz, M F Ahsan, A Ghose, M R Rahman, R Amin, M Hossain, M N Tareq, M A Jalil, U Kuch, R D G Theakston, D A Warrell, J B Harris
We describe 70 cases of monocled cobra (Naja kaouthia) bite admitted to Chittagong Medical College Hospital, Bangladesh. The biting snakes were identified by examining the dead snake and/or detecting N. kaouthia venom antigens in patients' serum. Bites were most common in the early morning and evening during the monsoon (May-July). Ligatures were routinely applied to the bitten limb before admission. Thirty-seven patients consulted traditional healers, most of whom made incisions around the bite site. Fifty-eight patients experienced severe neurotoxicity and most suffered swelling and pain of the bitten limb...
January 30, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28096620/epidural-analgesia-in-cattle-buffalo-and-camels
#11
REVIEW
Zuhair Bani Ismail
Epidural analgesia is commonly used in large animals. It is an easy, cheap, and effective technique used to prevent or control pain during surgeries involving the tail, anus, vulva, perineum, caudal udder, scrotum, and upper hind limbs. The objectives of this article were to comprehensively review and summarize all scientific data available in the literature on new techniques and drugs or drug combinations used for epidural anesthesia in cattle, camel, and buffalo. Only articles published between 2006 and 2016 were included in the review...
December 2016: Veterinary World
https://www.readbyqxmd.com/read/28077899/a-double-blind-randomized-clinical-trial-comparing-the-effect-of-neostigmine-and-metoclopramide-on-gastric-residual-volume-of-mechanically-ventilated-icu-patients
#12
Afshin Gholipour Baradari, Abbas Alipour, Abolfazl Firouzian, Laleh Moarab, Amir Emami Zeydi
BACKGROUND: In critically ill patients, enteral feeding through the nasogastric tube is the method of choice for nutritional support. Gastrointestinal feeding intolerance and disturbed gastric emptying are common challenges in these patients. The aim of this study was to compare the effect of Neostigmine and Metoclopramide on gastric residual volume (GRV) in mechanically ventilated ICU patients. METHODS: In a double blind, randomized clinical trial, a total of 60 mechanically ventilated ICU patients with GRV >120 mL (3 hours after the last gavage), were randomly assigned into two groups A and B...
December 2016: Acta Informatica Medica: AIM
https://www.readbyqxmd.com/read/28058724/thread-based-microfluidic-chips-as-a-platform-to-assess-acetylcholinesterase-activity
#13
Ariana Gonzalez, Michelle Gaines, Frank A Gomez
A microfluidic thread-based analytical device (μTAD) to assess the activity of acetylcholinesterase (AChE) via colorimetric analylsis is described. Fabrication of the device consists of two platforms, both with a nylon thread trifurcated into three channels terminating at open analysis sites at the end of the thread. 5,5'-Dithiobis-(2-nitrobenzoic acid) (DTNB) was spotted and dried on the analysis sites. Acetylthiocholine iodide (ATC) (or cysteine, Cys), is transported through an inlet channel of the nylon thread by capillary action due to the hydrophilic nature of nylon...
January 6, 2017: Electrophoresis
https://www.readbyqxmd.com/read/28043313/ogilvie-s-syndrome
#14
Muhammad Waqas Khan, Sanniya Khan Ghauri, Sara Shamim
Ogilvie's syndrome, also known as 'paralytic ileus of the colon', is characterised by pseudo-obstruction of the large intestine in the absence of any mechanical obstructing component; and presents as a massively distended abdomen. If left untreated, it may lead to bowel perforation or ischemia. Ogilvie's syndrome usually presents as a postsurgical complication, mainly due to the lack and/or restriction of movement coupled with a possible electrolyte imbalance. Here, we present a case of a pre-surgical 63-year lady, having a right hip fracture, who came with complaints of severe abdominal pain and distension for 4 days...
December 2016: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28030444/impact-of-reversal-strategies-on-the-incidence-of-postoperative-residual-paralysis-after-rocuronium-relaxation-without-neuromuscular-monitoring-a-partially-randomised-placebo-controlled-trial
#15
Réka Nemes, Béla Fülesdi, Adrienn Pongrácz, László Asztalos, Zoltán Szabó-Maák, Szabolcs Lengyel, Edömér Tassonyi
BACKGROUND: Electronic neuromuscular monitoring is not widely used to determine either the reversal requirements for neuromuscular block before extubation of the trachea, or to determine if there is any subsequent postoperative residual neuromuscular block (PORNB). OBJECTIVES: To investigate the incidence of PORNB using acceleromyography after spontaneous recovery of rocuronium-induced block and to compare this with the administration of sugammadex, neostigmine or a placebo...
December 26, 2016: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/28024715/incidence-of-postoperative-nausea-and-vomiting-following-gynecological-laparoscopy-a-comparison-of-standard-anesthetic-technique-and-propofol-infusion
#16
Pradipta Bhakta, Bablu Rani Ghosh, Umesh Singh, Preeti S Govind, Abhinav Gupta, Kulwant Singh Kapoor, Rajesh Kumar Jain, Tulsi Nag, Dipanwita Mitra, Manjushree Ray, Vikash Singh, Gauri Mukherjee
OBJECTIVE: To determine the safety, efficacy, and feasibility of propofol-based anesthesia in gynecological laparoscopies in reducing incidences of postoperative nausea and vomiting compared to a standard anesthesia using thiopentone/isoflurane. DESIGN: Randomized single-blind (for anesthesia techniques used) and double-blind (for postoperative assessment) controlled trial. SETTING: Operation theater, postanesthesia recovery room, teaching hospital...
December 23, 2016: Acta Anaesthesiologica Taiwanica: Official Journal of the Taiwan Society of Anesthesiologists
https://www.readbyqxmd.com/read/28008633/a-microfluidic-paper-based-device-to-assess-acetylcholinesterase-activity
#17
Chunye Liu, Frank A Gomez
Neurotransmitters play key roles in cell-to-cell communication. These chemical messengers are involved in many functional processes including growth, reproduction, memory, and behavior. In this communication, we describe a novel microfluidic paper-based analytical device (μPAD) to detect acetylcholinesterase (AChE) activity and inhibitor screening through a colorimetric analysis. The μPAD is easily fabricated via a wax printing process whereby wax is deposited onto the surface of chromatographic paper, and heated to create a hydrophobic barrier...
December 23, 2016: Electrophoresis
https://www.readbyqxmd.com/read/27990564/planarian-cholinesterase-in-vitro-characterization-of-an-evolutionarily-ancient-enzyme-to-study-organophosphorus-pesticide-toxicity-and-reactivation
#18
Danielle Hagstrom, Hideto Hirokawa, Limin Zhang, Zoran Radic, Palmer Taylor, Eva-Maria S Collins
The freshwater planarian Dugesia japonica has recently emerged as an animal model for developmental neurotoxicology and found to be sensitive to organophosphorus (OP) pesticides. While previous activity staining of D. japonica, which possess a discrete cholinergic nervous system, has shown acylthiocholine catalysis, it is unknown whether this is accomplished through an acetylcholinesterase (AChE), butyrylcholinesterase (BChE), or a hybrid esterase and how OP exposure affects esterase activity. Here, we show that the majority of D...
December 18, 2016: Archives of Toxicology
https://www.readbyqxmd.com/read/27923757/the-potentially-fatal-ogilvie-s-syndrome-in-lateral-transpsoas-access-surgery-a-multi-institutional-experience-with-2930-patients
#19
Jacob Januszewski, Sean K Keem, William Smith, Joshua M Beckman, Adam S Kanter, Rod J Oskuian, William Taylor, Juan S Uribe
BACKGROUND: Ogilvie's syndrome (OS) is a relatively uncommon pathology characterized by significant colonic dilation in the absence of mechanical obstruction. If unrecognized and untreated, cecal perforation resulting in a mortality rate of 25%-71% may occur. It is a potentially underdiagnosed condition in the lateral transpsoas approach population because of its uncommon nature and imitation of other well-known pathologies. METHODS: Two thousand nine hundred and thirty patients from 6 separate institutions were retrospectively reviewed since 2007 and screened for OS...
March 2017: World Neurosurgery
https://www.readbyqxmd.com/read/27902641/diaphragmatic-and-intercostal-electromyographic-activity-during-neostigmine-sugammadex-and-neostigmine-sugammadex-enhanced-recovery-after-neuromuscular-blockade-a-randomised-controlled-volunteer-study
#20
Guy Cammu, Tom Schepens, Nikolaas De Neve, Davina Wildemeersch, Luc Foubert, Philippe G Jorens
BACKGROUND: Electromyographic activity of the diaphragm (EMGdi) during weaning from mechanical ventilation is increased after sugammadex compared with neostigmine. OBJECTIVE: To determine the effect of neostigmine on EMGdi and surface EMG (sEMG) of the intercostal muscles during antagonism of rocuronium block with neostigmine, sugammadex and neostigmine followed by sugammadex. DESIGN: Randomised, controlled, double-blind study. SETTING: Intensive care research unit...
January 2017: European Journal of Anaesthesiology
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