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https://www.readbyqxmd.com/read/29676616/laboratory-practical-to-study-the-differential-innervation-pathways-of-urinary-tract-smooth-muscle
#1
Benjamin E Rembetski, Caroline A Cobine, Bernard T Drumm
In the mammalian lower urinary tract, there is a reciprocal relationship between the contractile state of the bladder and urethra. As the bladder fills with urine, it remains relaxed to accommodate increases in volume, while the urethra remains contracted to prevent leakage of urine from the bladder to the exterior. Disruptions to the normal contractile state of the bladder and urethra can lead to abnormal micturition patterns and urinary incontinence. While both the bladder and urethra are smooth-muscle organs, they are differentially contracted by input from cholinergic and sympathetic nerves, respectively...
June 1, 2018: Advances in Physiology Education
https://www.readbyqxmd.com/read/29676177/acetylcholine-induced-ciliary-beat-of-the-human-nasal-mucosa-is-regulated-by-the-pannexin-1-channel-and-purinergic-p2x-receptor
#2
Ba H Do, Toyoaki Ohbuchi, Tetsuro Wakasugi, Hiroki Koizumi, Mitsuru Yokoyama, Nobusuke Hohchi, Hideaki Suzuki
Background Airway mucociliary transport is an important function for the clearance of inhaled foreign particulates in the respiratory tract. The present study aimed at investigating the regulatory mechanism of acetylcholine (Ach)-induced ciliary beat of the human nasal mucosa in ex vivo. Methods The inferior turbinate mucosa was collected from patients with chronic hypertrophic rhinitis during endoscopic surgery. The mucosa was cut into thin strips, and ciliary movement was observed under a phase-contrast light microscope with a high-speed digital video camera...
January 1, 2018: American Journal of Rhinology & Allergy
https://www.readbyqxmd.com/read/29667118/acmt-position-statement-alternative-or-contingency-countermeasures-for-acetylcholinesterase-inhibiting-agents
#3
Andrew Stolbach, Vikhyat Bebarta, Michael Beuhler, Shaun Carstairs, Lewis Nelson, Michael Wahl, Paul M Wax, Charles McKay
First responders and health care providers must prepare to provide care for patients poisoned by acetylcholinesterase (AchE) inhibitor chemical warfare agents or pesticides. However, pre-deployed medical countermeasures (MCMs) may not be sufficient due to production and delivery interruption, rapid depletion of contents during a response, expiration of MCM components, or lack of local availability of approved MCMs. To augment supplies of community-based and forward-deployed nerve agent countermeasures, the American College of Medical Toxicology (ACMT) supports several strategies: (1) The use of expired atropine, diazepam, and pralidoxime auto-injectors and vials if non-expired drugs are unavailable; and (2) Investigation, development, and identification of alternative countermeasures-commonly stocked drugs that are not approved for nerve agent poisoning but are in the same therapeutic class as approved drugs...
April 17, 2018: Journal of Medical Toxicology: Official Journal of the American College of Medical Toxicology
https://www.readbyqxmd.com/read/29663016/gallic-acid-a-phenolic-compound-isolated-from-mimosa-bimucronata-dc-kuntze-leaves-induces-diuresis-and-saluresis-in-rats
#4
Fabile Schlickmann, Thaise Boeing, Luisa Nathália Bolda Mariano, Rita de Cássia Melo Vilhena de Andrade Fonseca da Silva, Luisa Mota da Silva, Sérgio Faloni de Andrade, Priscila de Souza, Valdir Cechinel-Filho
Although present in the leaves of Mimosa bimucronata (DC.) and many other medicinal plants commonly used to augment urinary volume excretion, the effects of gallic acid as a diuretic agent remain to be studied. Wistar rats were orally treated with vehicle, hydrochlorothiazide, or gallic acid. The effects of gallic acid in the presence of hydrochlorothiazide, furosemide, amiloride, L-NAME, atropine, and indomethacin were also investigated. Diuretic index, pH, conductivity, and electrolyte excretion were evaluated at the end of the experiment (after 8 or 24 h)...
April 16, 2018: Naunyn-Schmiedeberg's Archives of Pharmacology
https://www.readbyqxmd.com/read/29656945/ketamine-versus-ketamine-pluses-atropine-for-pediatric-sedation-a-meta-analysis
#5
REVIEW
Jiaxiao Shi, Ang Li, Zhijian Wei, Yang Liu, Cong Xing, Hongyu Shi, Han Ding, Dayu Pan, Guangzhi Ning, Shiqing Feng
OBJECTIVES: The application of atropine for pediatric sedation in the emergency department remains controversial. Our objective was to perform a comprehensive review of the literature and assess the clinical indexes in groups with and without atropine use. METHODS: PubMed, EMBASE, and the Cochrane Library were searched for randomized and non-randomized studies that compared ketamine and ketamine plus atropine for pediatric sedation. The risk ratio with 95% confidence interval was calculated using either a fixed- or random-effects model according to the value of I2 ...
April 5, 2018: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29653457/difficulties-in-differentiating-natural-from-synthetic-alkaloids-by-isotope-ratio-monitoring-using-13c-nuclear-magnetic-resonance-spectrometry
#6
Richard J Robins, Katarzyna M Romek, Mathilde Grand, Pierrick Nun, Didier Diomande, Maxime Julien, Gérald S Remaud
Within the food and pharmaceutical industries, there is an increasing legislative requirement for the accurate labeling of the product's origin. A key feature of this is to indicate whether the product is of natural or synthetic origin. With reference to this context, we have investigated three alkaloids commonly exploited for human use: nicotine, atropine, and caffeine. We have measured by 13 C nuclear magnetic resonance spectrometry the position-specific distribution of 13 C at natural abundance within several samples of each of these target molecules...
April 13, 2018: Planta Medica
https://www.readbyqxmd.com/read/29653183/atropa-belladonna-neurotoxicity-implications-to-neurological-disorders
#7
REVIEW
Gunnar F Kwakye, Jennifer Jiménez, Jessica A Jiménez, Michael Aschner
Atropa belladonna, commonly known as belladonna or deadly nightshade, ranks among one of the most poisonous plants in Europe and other parts of the world. The plant contains tropane alkaloids, including atropine, scopolamine, and hyoscyamine, which are used as anticholinergics in Food and Drug Administration (FDA) approved drugs and homeopathic remedies. These alkaloids can be very toxic at high dose. The FDA has recently reported that Hyland's baby teething tablets contain inconsistent amounts of Atropa belladonna that may have adverse effects on the nervous system and cause death in children, thus recalled the product in 2017...
April 10, 2018: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29651428/effects-and-mechanisms-of-tastants-on-the-gustatory-salivary-reflex-in-human-minor-salivary-glands
#8
Shizuko Satoh-Kuriwada, Noriaki Shoji, Hiroyuki Miyake, Chiyo Watanabe, Takashi Sasano
The effects and mechanisms of tastes on labial minor salivary gland (LMSG) secretion were investigated in 59 healthy individuals. Stimulation with each of the five basic tastes (i.e., sweet, salty, sour, bitter, and umami) onto the tongue induced LMSG secretion in a dose-dependent manner. Umami and sour tastes evoked greater secretion than did the other tastes. A synergistic effect of umami on LMSG secretion was recognized: a much greater increase in secretion was observed by a mixed solution of monosodium glutamate and inosine 5'-monophosphate than by each separate stimulation...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29628389/effects-of-buprenorphine-butorphanol-or-tramadol-premedication-on-anaesthetic-induction-with-alfaxalone-in-common-marmosets-callithrix-jacchus
#9
Jaco Bakker, Sandra Roubos, Edmond J Remarque, Saskia S Arndt, Peter W Kronen, Jan Am Langermans
OBJECTIVE: To investigate the clinical and physiological effects of intravenous (IV) alfaxalone alone or in combination with buprenorphine, butorphanol or tramadol premedication in marmosets. STUDY DESIGN: Prospective, randomized, blinded, crossover design. ANIMALS: Nine healthy marmosets (391 ± 48 g, 3.7 ± 2.2 years old). METHODS: Meloxicam 0.20 mg kg-1 subcutaneously, atropine 0.05 mg kg-1 intramuscularly (IM) and either buprenorphine 20 μg kg-1 IM (BUP-A), butorphanol 0...
February 5, 2018: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/29627347/trpa1-mediates-the-cardiac-effects-of-acrolein-through-parasympathetic-dominance-but-also-sympathetic-modulation-in-mice
#10
Nicole Kurhanewicz, Allen Ledbetter, Aimen Farraj, Mehdi Hazari
Numerous studies have demonstrated that short-term air pollution exposure causes cardiac autonomic imbalance as measured by heart rate variability (HRV). We previously showed that a single exposure to acrolein, a ubiquitous gaseous component of air pollution, not only causes autonomic imbalance, but also increases arrhythmia through transient receptor potential A1 (TRPA1) cation channels. Thus, the goal of this study was to characterize acrolein-induced autonomic changes in both normal and TRPA1-knockout mice (KO)...
April 5, 2018: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29627297/neuropharmacological-effects-of-essential-oil-from-the-leaves-of-croton-conduplicatus-kunth-and-possible-mechanisms-of-action-involved
#11
Raimundo Gonçalves de Oliveira Júnior, Christiane Adrielly Alves Ferraz, Juliane Cabral Silva, Roxana Braga de Andrade Teles, Mariana Gama E Silva, Tâmara Coimbra Diniz, Uiliane Soares Dos Santos, Ana Valéria Vieira de Souza, Carlos Eduardo Pereira Nunes, Marcos José Salvador, Vitor Prates Lorenzo, Lucindo José Quintans Junior, Jackson Roberto Guedes da Silva Almeida
ETHNOPHARMACOLOGICAL RELEVANCE: Croton conduplicatus Kunth (Euphorbiaceae) is a Brazilian aromatic medicinal plant, widely known as "quebra-faca". In folk medicine, its leaves and stem-barks are used as a natural analgesic for the treatment of headaches. AIM OF THE STUDY: In this study, we describe for the first time the neuropharmacological potential of the essential oil obtained from the leaves of Croton conduplicatus (EO) in experimental models of pain, anxiety and insomnia...
April 5, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29626346/propofol-for-implantable-cardioverter-defibrillator-implantation-in-patients-with-brugada-syndrome
#12
Hye-Mee Kw On, Sung-Hoon Kim, Se-Ung Pa Rk, Jin-Ho Rh Im, Hee-Su N Park, Wook-Jong Kim, Gi-Byou Ng Nam
AIMS: Avoiding propofol in patients with Brugada syndrome has been suggested because of the theoretical risk of provoking ventricular arrhythmias, although propofol may be selected for conscious sedation during electrophysiological procedures in catheterization laboratories. This study aimed to document peri-procedural electrocardiographic changes and adverse events in patients with Brugada syndrome undergoing implantable cardioverter defibrillator (ICD) implantation using propofol sedation...
April 6, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29625707/-atropinic-burden-and-anticholinergic-drugs-interest-and-application-in-clinical-practice-in-the-elderly
#13
Sibylle de Germay, Maryse Lapeyre-Mestre, Jean-Louis Montastruc, François Montastruc
Anticholinergic drugs (also called antimuscarinics or atropinics) increase the risk of falls, cognitive impairment and/or mortality in older patients. These drugs belong to the lists of potentially inappropriate medications in the elderly. The aim of this review was to present and discuss the different tools available to measure the atropinic risk in drug exposure of older patients. Several scales, developed from biological and/or clinical criteria, allow to classify anticholinergic drugs according to their atropinic potency and to assign to them an atropinic burden...
March 7, 2018: Thérapie
https://www.readbyqxmd.com/read/29625196/sex-modulated-effects-of-sarin-exposure-in-rats-toxicity-hypothermia-and-inflammatory-markers
#14
Z Pittel, E Grauer, R Gez, Y Shlomovich, S Baranes, S Chapman
This work focused on sex differences in rats exposed to sarin. Females were found to be more sensitive to sarin toxicity (LD50 67 µg/kg) than males (88 µg/kg), showed less acute hypothermic effects than males (at 120 min post sarin, 3.1 ± 1.1 and 4.5 ± 1 °C decrease, respectively), but with a significant slower recovery over days. Females' temperature response to the cholinergic agonist oxotremorine (0.25 mg/kg, im) was more pronounced than that of males (at 30 min, 3.13 ± 0.27 and 2...
April 3, 2018: Neurotoxicology
https://www.readbyqxmd.com/read/29617563/protein-surface-structural-recognition-in-inactive-areas-a-new-immobilization-strategy-for-acetylcholinesterase
#15
Jianxiong Diao, Xiaolu Yu, Lin Ma, Yuanqing Li, Ying Sun
This work reported a new method of design for the immobilization of acetylcholinesterase (AChE) based on its molecular structure to improve its sensitivity and stability. The immobilization binding site on the surface of AChE was determined using MOLCAD's multi-channel functionality. Then, 11 molecules ((+)-catechin, (-)-epicatechin, (-)-gallocatechin, hesperetin, naringenin, quercetin, taxifolin, (-)-epicatechin gallate, flupirtine, atropine, and hyoscyamine) were selected from the ZINC database (about 50000 molecules) as candidate affinity ligands for AChE...
April 4, 2018: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/29615870/atp-and-odor-mixture-activate-trpm5-expressing-microvillous-cells-and-potentially-induce-acetylcholine-release-to-enhance-supporting-cell-endocytosis-in-mouse-main-olfactory-epithelium
#16
Ziying Fu, Tatsuya Ogura, Wangmei Luo, Weihong Lin
The main olfactory epithelium (MOE) functions to detect odor molecules, provide an epithelial surface barrier, and remove xenobiotics from inhaled air. Mechanisms coordinating the activities of different cell types within the MOE to maintain these functions are poorly understood. Previously, we showed that superficially located microvillous cells (MCs) in the MOE expressing transient receptor potential channel M5 (TRPM5) are cholinergic and chemoresponsive and that they play an important role in maintaining odor responses and olfactory-guided behavior under challenging chemical environment...
2018: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/29613942/duration-of-pupillary-unresponsiveness-to-light-a-physiological-adjunct-to-electroencephalography-and-motor-seizure-duration-monitoring-during-electroconvulsive-therapy
#17
Sudhir Venkataramaiah, Ganne S Umamaheswara Rao, Sriganesh Kamath, Tanmay Jadhav, Channaveerachari Naveen Kumar, Shyam Sundar Arumugham, Madhusudan Reddy, Mariamma Philip, Jagadisha Thirthalli
BACKGROUND: During electroconvulsive therapy (ECT) sessions, we observed that the time taken for the return of pupillary response to light (ROPL) outlasted both the electroencephalography (EEG) and the motor seizure duration after the delivery of the electrical stimulus to produce convulsions. OBJECTIVE: The objective of this study was to investigate whether ROPL can be used as a marker of cessation of seizure activity in the brain after ECT and also to study the effect of atropine premedication on seizure activity during ECT...
April 2, 2018: Journal of ECT
https://www.readbyqxmd.com/read/29611327/fecal-imaging-demonstrates-that-low-methoxyl-pectin-supplementation-normalizes-gastro-intestinal-transit-in-mice-given-a-liquid-diet
#18
Tomohiro Kagawa, Naoyuki Endo, Goro Ebisu, Ippei Yamaoka
This study has the following aims: (1) to confirm a methodology for a fecal indocyanine green (ICG) imaging test for measuring gastro-intestinal transit time (GITT); and (2) to compare GITT in mice given a liquid diet in which viscosity increases under acidic conditions to that in mice given stable liquid diets with comparable viscosity or regular chow. To address Aim 1, mice received ICG orally along with intraperitoneal injection of atropine in Study 1, and mice were given ICG orally with concurrent carmine red for Study 2...
April 2018: Physiological Reports
https://www.readbyqxmd.com/read/29609011/relaxant-effect-of-lippia-origanoides-essential-oil-in-guinea-pig-trachea-smooth-muscle-involves-potassium-channels-and-soluble-guanylyl-cyclase
#19
Pedro Modesto Nascimento Menezes, Mariana Coelho Brito, Gabriela Olinda de Paiva, Carine Oliveira Dos Santos, Lenaldo Muniz de Oliveira, Luciano Augusto de Araújo Ribeiro, Julianeli Tolentino de Lima, Angélica Maria Lucchese, Fabrício Souza Silva
ETHNOPHARMACOLOGICAL RELEVANCE: Lippia origanoides H.B.K. is an aromatic species used in folk medicine to treat respiratory diseases, including asthma. AIM OF THE STUDY: The aim of this work was to evaluate the relaxing potential and mechanism of action of the L. origanoides (LOO) essential oil in isolated guinea-pig trachea MATERIALS AND METHODS: Leaves from L. origanoides were collected at experimental fields under organic cultivation, at the Forest Garden of Universidade Estadual de Feira de Santana...
March 30, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29606019/efficacy-and-safety-of-low-concentration-bisulfite-containing-intracameral-epinephrine-and-topical-atropine-treatments-for-the-prevention-of-intraoperative-floppy-iris-syndrome
#20
Fehim Esen, Azer Erdagi Bulut, Ebru Toker
PURPOSE: The aim of this study was to evaluate the efficacy and safety of topical atropine and topical atropine combined with intracameral low-concentration, bisulfite-containing epinephrine treatment for the prophylaxis of intraoperative floppy iris syndrome. MATERIAL AND METHODS: Seventy-two eyes of 55 male patients who were treated with alpha-adrenergic antagonist medications for benign prostatic hyperplasia were included in this study. Standard premedication with topical cyclopentolate, phenylephrine, tropicamide and ketorolac was applied to all of the patients...
April 2, 2018: Cutaneous and Ocular Toxicology
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