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Nicotine ingestion

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https://www.readbyqxmd.com/read/29132300/plant-mediated-rnai-silences-midgut-expressed-genes-in-congeneric-lepidopteran-insects-in-nature
#1
Spoorthi Poreddy, Jiancai Li, Ian T Baldwin
BACKGROUND: Plant-mediated RNAi (PMRi) silencing of insect genes has enormous potential for crop protection, but whether it works robustly under field conditions, particularly with lepidopteran pests, remains controversial. Wild tobacco Nicotiana attenuata and cultivated tobacco (N. tabacum) (Solanaceae) is attacked by two closely related specialist herbivores Manduca sexta and M. quinquemaculata (Lepidoptera, Sphingidae). When M. sexta larvae attack transgenic N. attenuata plants expressing double-stranded RNA(dsRNA) targeting M...
November 13, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/29112285/alcohol-induced-impairment-of-balance-is-antagonized-by-energy-drinks
#2
Cecile A Marczinski, Mark T Fillmore, Amy L Stamates, Sarah F Maloney
BACKGROUND: The acute administration of alcohol reliably impairs balance and motor coordination. While it is common for consumers to ingest alcohol with other stimulant drugs (e.g., caffeine, nicotine), little is known whether prototypical alcohol-induced balance impairments are altered by stimulant drugs. The purpose of this study was to examine whether the coadministration of a high-caffeine energy drink with alcohol can antagonize expected alcohol-induced increases in body sway. METHODS: Sixteen social drinkers (of equal gender) participated in 4 separate double-blind dose administration sessions that involved consumption of alcohol and energy drinks, alone and in combination...
November 7, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/29056353/the-ghr-r-antagonist-jmv-2959-neither-induces-malaise-nor-alters-the-malaise-property-of-licl-in-the-adult-male-rat
#3
Juan A Rodriguez, Jean-Alain Fehrentz, Jean Martinez, Khoubaib Ben Haj Salah, Paul J Wellman
The orexigenic peptide ghrelin (GHR) interacts with ghrelin receptors (GHR-Rs) to modulate brain reinforcement and feeding circuits. Pharmacological inactivation of GHR-Rs via administration of the drug JMV 2959 attenuates the rewarding/reinforcing effects of several drugs of abuse including alcohol, morphine, amphetamine and nicotine. One view of these results is that inactivation of GHR-Rs taps into brain reinforcement/feeding circuits acted upon by drugs of abuse. An alternate explanation is that JMV 2959 may induce malaise, which in turn may limit reinforcement as well as food ingestion...
January 1, 2018: Physiology & Behavior
https://www.readbyqxmd.com/read/29054611/maternal-undernutrition-during-lactation-alters-nicotine-reward-and-dopac-dopamine-ratio-in-cerebral-cortex-in-adolescent-mice-but-does-not-affect-nicotine-induced-nachrs-upregulation
#4
Ana C Dutra-Tavares, Juliana O Silva, André L Nunes-Freitas, Vinícius M S Guimarães, Ulisses C Araújo, Ellen P S Conceição, Egberto G Moura, Patrícia C Lisboa, Cláudio C Filgueiras, Alex C Manhães, Yael Abreu-Villaça, Anderson Ribeiro-Carvalho
Early undernutrition causes long lasting alterations that affect the response to psychoactive drugs. Particularly, undernutrition during lactation affects the acute locomotor response to nicotine during adolescence, but the reward effect of continued exposure to nicotine remains unknown. The goal of this study was to investigate the effects of undernutrition during lactation on the nicotine susceptibility indexed via conditioned place preference (CPP), on dopamine content and turnover and on nicotine-induced nicotinic cholinergic receptor (nAChR) upregulation in the cerebral cortex, midbrain and hippocampus of adolescent mice...
October 18, 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28992874/poisoning-after-ingestion-of-spartium-junceum-seeds-dose-dependent-effects-in-three-boys
#5
Nuria Giménez, Noemí Magro, Nuria Cortés, Raimon Guitart
BACKGROUND: Spanish broom (Spartium junceum L.) is an ornamental, medicinal, and potentially poisonous plant. CASE REPORT: Three children, aged 5-6 years, were accidentally poisoned from ingesting a variable number of seeds of Spanish broom. This plant contains several quinolizidine alkaloids as cytisine, which act as an agonist of nicotinic acetylcholine receptors. The potential danger varies, depending on the dose. After having ingested one to two seeds, one of the boys was asymptomatic...
September 2017: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28991400/resistance-to-cycloxaprid-in-laodelphax-striatellus-is-associated-with-altered-expression-of-nicotinic-acetylcholine-receptor-subunits
#6
Yueliang Zhang, Yangchun Han, Qiong Yang, Lihua Wang, Peng He, Zewen Liu, Huifang Guo, Jichao Fang
BACKGROUND: Cycloxaprid is a new oxabridged cis-configuration neonicotinoid insecticide, the resistance development potential and underlying resistance mechanism of which were investigated in the small brown planthopper, Laodelphax striatellus (Fallén), an important agricultural pest of rice. RESULTS: A cycloxaprid-resistant strain (YN-CPD) only achieved 10-fold resistance, in contrast to 106-fold resistance to buprofezin and 332-fold resistance to chlorpyrifos achieved after exposure to similar selection pressure, and the cycloxaprid selected line showed no cross-resistance to the buprofezin and chlorpyrifos-selected resistance strains...
October 9, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28987304/death-from-ingestion-of-e-liquid
#7
Stephen Morley, John Slaughter, Paul R Smith
BACKGROUND: The use of e-liquids is becoming more prevalent. There is a risk that such liquids may be ingested by mouth rather than being vaped/ inhaled. Due to the high concentration of drugs such as nicotine in these liquids, there may be toxic, and possibly fatal consequences. CASE REPORT: We report the death of a 32-year-old male who ingested nicotine-containing e-liquid while under the influence of alcohol. A serum sample taken 24 h after collapse contained nicotine at a concentration of 1600 ng/mL of nicotine...
October 4, 2017: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28984212/-fatal-intoxication-with-nicotine-for-e-cigarette
#8
D H van der Meer, A D Pranger, I Jansen, E B Wilms, H Kieft, J G Maring
BACKGROUND: Since the introduction of the electronic e-cigarette a few years ago, its use has greatly increased. The liquid formulations used in these e-cigarettes contain nicotine in high concentrations; ingestion of these liquids can be fatal. CASE DESCRIPTION: A 42-year-old male was admitted to the Intensive Care ward due to cardiac arrest. The patient had ingested highly concentrated liquid nicotine, originating from a vial with liquid for e-cigarettes. When the ambulance personnel found the patient he did not have a pulse; following CPR and administration of adrenaline his pulse returned...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/28859890/comprehensive-determination-of-flavouring-additives-and-nicotine-in-e-cigarette-refill-solutions-part-ii-gas-chromatography-mass-spectrometry-analysis
#9
Justyna Aszyk, Mateusz Kacper Woźniak, Paweł Kubica, Agata Kot-Wasik, Jacek Namieśnik, Andrzej Wasik
Flavouring compounds are an essential part of e-liquid products for cigarettes. In general, they are regarded as safe for ingestion, but they may have unrecognized risks when they are inhaled. In some cases, manufactures do not currently abide by the Tobacco Products Directive (2014/40/EU) and do not declare the detailed contents of e-liquids on their labels. To help evaluate the health impact of flavouring substances, there is a need for comprehensive approaches to determine their concentrations in e-liquids...
August 24, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28775316/efficient-functional-neutralization-of-lethal-peptide-toxins-in-vivo-by-oligonucleotides
#10
Tarek Mohamed Abd El-Aziz, Corinne Ravelet, Jordi Molgo, Emmanuelle Fiore, Simon Pale, Muriel Amar, Sawsan Al-Khoury, Jérôme Dejeu, Mahmoud Fadl, Michel Ronjat, Germain Sotoing Taiwe, Denis Servent, Eric Peyrin, Michel De Waard
Medical means to save the life of human patients affected by drug abuse, envenomation or critical poisoning are currently limited. While the compounds at risks are most often well identified, particularly for bioterrorism, chemical intervention to counteract the toxic effects of the ingested/injected compound(s) is restricted to the use of antibodies. Herein, we illustrate that DNA aptamers, targeted to block the pharmacophore of a poisonous compound, represent a fast-acting and reliable method of neutralization in vivo that possesses efficient and long-lasting life-saving properties...
August 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28622813/evaluation-of-drug-use-and-medication-compliance-in-adolescents-admitted-to-a-psychiatric-facility-from-the-pediatric-emergency-department
#11
George Sam Wang, Genie Roosevelt, Amy Becker, Lina Brou, Jeffrey L Galinkin
OBJECTIVES: Knowledge of drug use and medication compliance during mental health evaluation can help guide evaluation and treatment. The objective was to evaluate drug use and medication compliance in a pediatric emergency department (PED) psychiatric population by comparing medical history, standard urine drug screen (EIA), and expanded urine drug screen (HPLC-MS/MS). METHODS: A prospective cohort study of admitted psychiatric patients ≥13years and ≤18years in a tertiary-care children's hospital psychiatric ED from January 31, 2013 through April 16, 2014...
May 2017: General Hospital Psychiatry
https://www.readbyqxmd.com/read/28387073/-electronic-cigarette-state-of-the-science-about-toxicological-aspects
#12
REVIEW
M Deville, C Charlier
Electronic cigarettes (e-cigarettes) are presented as a healthier alternative to tobacco smoking. They are designed to contain a solution which is heated to produce an aerosol inhaled by the user. The liquid is mainly composed of propylene glycol, glycerol, flavours and, in some cases, nicotine. Except for nicotine, which can be fatal when ingested at high dose, these components are generally considered as safe. However, the potential effect of long term exposure to inhaled propylene glycol is unknown at this time...
January 2017: Revue Médicale de Liège
https://www.readbyqxmd.com/read/28328690/the-first-use-of-pralidoxime-in-a-child-with-rivastigmine-poisoning
#13
Eylem Ulaş Saz, Ali Yurtseven, Mehmet Arda Kilinç, Yusuf Sari, Hasan Ağin
The aim of this report is to describe the successful use of pralidoxime in a pediatric patient who accidentally ingested 12 mg of rivastigmine and presented to the emergency department with weakness, drowsiness, hyporeactivity to environmental stimuli, and full cholinergic syndrome. CASE: The patient presented to the emergency department 2 hours after a suspected ingestion of rivastigmine. He was sleepy but oriented and cooperative, hypotonic, and hyporeflexic and has a Glasgow Coma Scale score of 13 (E3M6V4)...
March 21, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/28271317/cholinergic-anti-inflammatory-pathway-does-not-contribute-to-prevention-of-ulcerative-colitis-by-novel-indoline-carbamates
#14
Helena Shifrin, Odelia Mouhadeb, Nathan Gluck, Chen Varol, Marta Weinstock
Indoline carbamates, AN680 and AN917 decrease cytokines, TNF-α and IL-6 in peritoneal macrophages activated by lipopolysaccharide (LPS) and in mouse tissues after LPS injection. They prevent nuclear translocation of nuclear factor κB (NF-κB) and activator protein 1. Only AN917 inhibits cholinesterase (ChE) at relevant concentrations. ChE inhibitors decrease NF-κB by activating α7 nicotinic acetylcholine receptors (α7nAChR). The current study compared the effect of rivastigmine, a ChE inhibitor, AN680 and AN917 on ulcerative colitis induced in mice by ingestion of dextran sodium sulfate (4...
September 2017: Journal of Neuroimmune Pharmacology: the Official Journal of the Society on NeuroImmune Pharmacology
https://www.readbyqxmd.com/read/28194215/accidental-ingestion-of-e-cigarette-liquid-nicotine-in-a-15-month-old-child-an-infant-mortality-case-of-nicotine-intoxication
#15
An Deok Seo, Dong Chan Kim, Hee Joon Yu, Min Jae Kang
Electronic cigarettes are novel tobacco products that are frequently used these days. The cartridge contains liquid nicotine and accidental poisoning, even with a small oral dose, endangers children. We present here a mortality case of a 15-month-old child who ingested liquid nicotine mistaking it for cold medicine. When the emergency medical technicians arrived, she was found to have pulseless electrical activity. Spontaneous circulation was restored after approximately 40 minutes of cardiopulmonary resuscitation...
December 2016: Korean Journal of Pediatrics
https://www.readbyqxmd.com/read/28150179/detoxification-and-elimination-of-nicotine-by-nectar-feeding-birds
#16
S Lerch-Henning, E E Du Rand, S W Nicolson
Many dilute nectars consumed by bird pollinators contain secondary metabolites, potentially toxic chemicals produced by plants as defences against herbivores. Consequently, nectar-feeding birds are challenged not only by frequent water excess, but also by the toxin content of their diet. High water turnover, however, could be advantageous to nectar consumers by enabling them to excrete secondary metabolites or their transformation products more easily. We investigated how the alkaloid nicotine, naturally present in nectar of Nicotiana species, influences osmoregulation in white-bellied sunbirds Cinnyris talatala and Cape white-eyes Zosterops virens...
May 2017: Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
https://www.readbyqxmd.com/read/28101715/cortex-and-amygdala-dependent-learning-and-nicotinic-acetylcholine-receptor-gene-expression-is-severely-impaired-in-mice-orally-treated-with-alcl3
#17
Syeda Mehpara Farhat, Aamra Mahboob, Touqeer Ahmed
Recent industrialization has increased human exposure to bio-available aluminum (Al). If more Al enters the brain than leaves, Al concentration will rise in the brain leading to neurodegenerative disorders. The aim of the present study was to determine Al concentration, neurodegeneration, and nicotinic acetylcholine receptor (nAChR) gene expression in the cortex and amygdala after oral ingestion of Al salt. The effect of Al on cortex- and amygdala-dependent learning and memory functions was also assessed. Mice were given AlCl3 (250 mg/kg) in drinking water for 42 days...
January 18, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28039423/relative-toxicity-of-two-aphicides-to-hippodamia-convergens-coleoptera-coccinellidae-implications-for-integrated-management-of-sugarcane-aphid-melanaphis-sacchari-hemiptera-aphididae
#18
Felipe Colares, J P Michaud, Clint L Bain, Jorge B Torres
Flupyradifurone and sulfoxaflor present novel insecticide chemistries with particular efficacy against aphids, and the recent emergence of sugarcane aphid, Melanaphis sacchari (Zehntner), as a pest of sorghum in the United States has resulted in their widespread use. We examined their toxicity to Hippodamia convergens Guerin-Meneville, an important aphid biocontrol agent. We exposed beetles to topical applications of the field rate (FR) of these insecticides, fed them contaminated food (eggs of Ephestia kuehniella Zeller), and gave first-instar larvae 24-h exposures to leaf residues...
February 1, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/27988056/unintentional-pediatric-ingestion-of-electronic%C3%A2-cigarette-nicotine-refill-liquid-necessitating-intubation
#19
Matthew J Noble, Beck Longstreet, Robert G Hendrickson, Roy Gerona
Liquid nicotine used in electronic cigarette devices is highly concentrated, unreliably packaged, and poorly regulated. We present a case report of a 6-year-old female who developed severe toxicity and required intubation after an unintentional oral ingestion of approximately 703 mg (35 mg/kg) of liquid nicotine, with accompanying serum and urine concentrations of nicotine and its metabolites. Analysis of the ingested liquid suggests a nicotine concentration of 140.6 mg/mL in the purchased commercial product, or 234% of its labeled concentration...
January 2017: Annals of Emergency Medicine
https://www.readbyqxmd.com/read/27894020/the-anatomical-mummies-of-mombello-detection-of-cocaine-nicotine-and-caffeine-in-the-hair-of-psychiatric-patients-of-the-early-20th-century
#20
Frank Musshoff, Helena Fels, Alberto Carli, Dario Piombino-Mascali
The Mombello Psychiatric Hospital in Limbiate, near Milan, replaced the old Senavra Hospital as the Psychiatric Hospital for the Province of Milan in the 19th century. During the early 20th century, bodies of several Mombello patients were dissected and preserved by Giuseppe Paravicini, an anatomist who operated within the asylum. The aim of the present study was to examine and memorialize this important assemblage. To this end, we were allowed to sample the head hair of six such preparations for toxicological analysis...
November 14, 2016: Forensic Science International
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