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https://www.readbyqxmd.com/read/28110168/ultra-high-performance-liquid-chromatography-tandem-mass-spectrometry-uhplc-ms-ms-for-determination-of-ghb-precursors-and-metabolites-in-different-specimens-application-to-clinical-and-forensic-cases
#1
Francesco Paolo Busardò, Chrystalla Kyriakou, Emilia Marchei, Roberta Pacifici, Daniel Sejer Pedersen, Simona Pichini
Gamma-hydroxybutyric acid (GHB) acts as a precursor and metabolite of the inhibitory central nervous system (CNS) neurotransmitter gamma-aminobutyric acid (GABA). Sodium salt of GHB has been used as a medication for narcolepsy and alcohol withdrawal. Moreover, GHB and its precursor gamma-butyrolactone (GBL), are illegal recreational drugs of abuse. A procedure based on ultra-high-performance liquid chromatography tandem mass spectrometry has been developed and validated in plasma, urine, cerebrospinal fluid and hair for acute and chronic exposure to GHB and in seized preparations coming from black market...
January 9, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28110144/method-development-for-detecting-the-novel-cyanide-antidote-dimethyl-trisulfide-from-blood-and-brain-and-its-interaction-with-blood
#2
Lóránd Kiss, Secondra Holmes, Ching-En Chou, Xinmei Dong, James Ross, Denise Brown, Brooke Mendenhall, Valerie Coronado, Deepthika De Silva, Gary A Rockwood, Ilona Petrikovics, David E Thompson
The antidotal potency of dimethyl trisulfide (DMTS) against cyanide poisoning was discovered and investigated in our previous studies. Based on our results it has better efficacy than the Cyanokit and the Nithiodote therapies that are presently used against cyanide intoxication in the US. Because of their absence in the literature, the goal of this work was to develop analytical methods for determining DMTS from blood and brain that could be employed in future pharmacokinetic studies. An HPLC-UV method for detection of DMTS from blood, a GC-MS method for detection of DMTS from brain, and associated validation experiments are described here...
January 9, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28109985/the-synthetic-neuroactive-steroid-sge-516-reduces-status-epilepticus-and-neuronal-cell-death-in-a-rat-model-of-soman-intoxication
#3
Alison L Althaus, Hilary S McCarren, Aymen Alqazzaz, Cecelia Jackson, John H McDonough, Carl D Smith, Ethan Hoffman, Rebecca S Hammond, Albert J Robichaud, James J Doherty
Organophosphorus nerve agents (OPNAs) are irreversible inhibitors of acetylcholinesterase that pose a serious threat to public health because of their use as chemical weapons. Exposure to high doses of OPNAs can dramatically potentiate cholinergic synaptic activity and cause status epilepticus (SE). Current standard of care for OPNA exposure involves treatment with cholinergic antagonists, oxime cholinesterase reactivators, and benzodiazepines. However, data from pre-clinical models suggest that OPNA-induced SE rapidly becomes refractory to benzodiazepines...
January 18, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28107437/hyperventilation-with-maintenance-of-isocapnia-an-old-new-method-in-carbon-monoxide-intoxication
#4
Jacek Sein Anand, Daria Schetz, Wojciech Waldman, Marek Wiśniewski
INTRODUCTION: Exposure to carbon monoxide (CO) is among the most common causes of acute and chronic poisonings worldwide. The crucial point of treatment of such acute poisonings is to eliminate CO from the body as fast as possible. There are currently two approaches to the management of the CO intoxication: hyperbaric oxygen therapy (HOT) and normobaric oxygen therapy (NOT). HOT is highly effective and capable of achieving the CO elimination half-time (T½) as low as 15 minutes. Unfortunately this method is expensive and not always readily available...
2017: PloS One
https://www.readbyqxmd.com/read/28107050/evaluation-of-a-responsible-beverage-service-and-enforcement-program-effects-on-bar-patron-intoxication-and-potential-impaired-driving-by-young-adults
#5
James C Fell, Deborah A Fisher, Jie Yao, A Scott McKnight
OBJECTIVE: Studies of alcohol-related harm (violence, injury, illness) suggest that the most significant risk factors are the amount of alcohol consumed and whether obviously intoxicated patrons continue to be served. This study's objective was to investigate the effects of a responsible beverage service (RBS)/enhanced alcohol enforcement intervention on bars, bar patrons, and impaired driving. METHOD: Two communities-Monroe County, NY, and Cleveland, OH-participated in a demonstration program and evaluation...
January 20, 2017: Traffic Injury Prevention
https://www.readbyqxmd.com/read/28106811/prevalence-and-social-risk-factors-for-hearing-impairment-in-chinese-children-a-national-survey
#6
Chunfeng Yun, Zhenjie Wang, Jiamin Gao, Ping He, Chao Guo, Gong Chen, Xiaoying Zheng
Hearing impairment may affect children's communication skills, social development, and educational achievement. Little is known about the prevalence of hearing impairment among Chinese children. Data were taken from the 2006 second China National Survey on Disability (CNSD). Hearing impairment was defined as moderate (41-60 dB HL), severe (61-80 dB HL), profound (81-90 dB HL), or complete (>91 dB HL). Logistic regression was used to estimate the odds ratio (OR) and 95% confidence intervals (CI). A weighted number of 567,915 hearing impairment children were identified, yielding a prevalence of 17...
January 18, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28104145/a-case-report-of-successful-kidney-donation-after-brain-death-following-nicotine-intoxication
#7
M Räsänen, I Helanterä, J Kalliomäki, J Savikko, M Parry, M Lempinen
Nicotine intoxication is a rare cause of death and can lead to brain death after respiratory arrest and hypoxic-ischemic encephalopathy. To our knowledge, no previous reports regarding organ donation after nicotine intoxication have been described. We present a successful case of kidney donation after brain death caused by subcutaneous nicotine overdose from liquid nicotine from an e-cigarette cartridge in an attempted suicide. Both kidneys were transplanted successfully with immediate graft function, and both recipients were discharged at postoperative day 9 with normal plasma creatinine levels...
January 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28103325/assessing-fifty-years-of-general-health-surveillance-of-roe-deer-in-switzerland-a-retrospective-analysis-of-necropsy-reports
#8
Mirjam Pewsner, Francesco Carlo Origgi, Joachim Frey, Marie-Pierre Ryser-Degiorgis
General wildlife health surveillance is a valuable source of information on the causes of mortality, disease susceptibility and pathology of the investigated hosts and it is considered to be an essential component of early warning systems. However, the representativeness of data from such surveillance programs is known to be limited by numerous biases. The roe deer (Capreolus capreolus capreolus) is the most abundant ungulate and a major game species all over Europe. Yet, internationally available literature on roe deer pathology is scarce...
2017: PloS One
https://www.readbyqxmd.com/read/28103144/role-of-different-natural-antioxidants-in-the-modulation-of-mrna-expression-of-apoptotic-molecules-in-the-livers-of-carbon-tetrachloride-intoxicated-rats
#9
Nouf M Al-Rasheed, Naglaa F El-Orabi, Laila Mohamed Fadda, Hanaa Mahmoud Ali, Nawal M Al-Rasheed, Yieldez Bassiouni, Abeer Mohammad Aldbass
Overexpression of nuclear factor (NF-κB) or activation of Smad3 by transforming growth factor β (TGF-β1) induced by oncogenes results in overexpression of fibrotic processes and hence cell death. The objective of this study is to examine whether Silymarin (Sil) alone or in combination with Vitamin E (Vit E) and/or Curcumin (Cur) plays a modulatory role against the overexpression of NF-κB, and TGF-β that induced in response to carbon tetrachloride (CCl4) administration. The present work revealed that CCl4 induced elevation of in serum alanine aminotransferase (ALT), Apoptosis regulator (Bax), Smad3, TGF-β, and NF-kB hepatic mRNA expression (using Real-time PCR), administration of Sil alone downregulated these expressions...
January 19, 2017: Animal Biotechnology
https://www.readbyqxmd.com/read/28101313/a-young-adult-with-unintended-acute-intravenous-iron-intoxication-treated-with-oral-chelation-the-use-of-liver-ferriscan-for-diagnosing-and-monitoring-tissue-iron-load
#10
Mohamed Yassin, Ashraf T Soliman, Vincenzo De Sanctis, Abbas Moustafa, Sandra Abou Samaan, Abdulqadir Nashwan
Acute iron intoxication (FeI) in humans has not been adequately studied. The manifestation of FeI, defined as a serum iron concentration >300 μg/dL (55 μmol/L) within 12 hours of ingestion, include various symptoms appearing in progressive stages. Systemic toxicity is expected with an intake of 60 mg/kg. A 27-year-old female nurse presented with unintended acute intravenous iron intoxication (FeI) a week after self-injecting herself with 20 ampoules of IV iron (4,000 mg elemental iron, 60 mg/kg). She had stable vital signs and mild hepatic tenderness...
2017: Mediterranean Journal of Hematology and Infectious Diseases
https://www.readbyqxmd.com/read/28101223/modulatory-effect-of-luteolin-on-redox-homeostasis-and-inflammatory-cytokines-in-a-mouse-model-of-liver-cancer
#11
Qiang Zhang, Jie Yang, Jun Wang
Liver cancer is one of the leading causes of cancer-associated mortality worldwide. Due to changes in lifestyle and daily exposure to various chemicals, which may lead to chemical intoxication, liver cancer has become a prominent disease in humans. Chemical-induced carcinogenesis in experimental animals has become a reliable model for the investigation of liver cancer-associated biological alterations that may mimic human hepatic cancer. Liver cancer in BALB/c mice was induced by administering diethylnitrosamine (DN) in drinking water for 6 weeks...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28100224/radical-scavenging-activities-of-lagerstroemia-speciosa-l-pers-petal-extracts-and-its-hepato-protection-in-ccl4-intoxicated-mice
#12
Bipransh Kumar Tiwary, Somit Dutta, Priyankar Dey, Mossaraf Hossain, Anoop Kumar, Sony Bihani, Ashis Kumar Nanda, Tapas Kumar Chaudhuri, Ranadhir Chakraborty
BACKGROUND: Lagerstroemia speciosa (L.) Pers. has medicinal importance. Bioactive phytochemicals isolated from different parts of L. speciosa, have revealed hypoglycemic, antibacterial, anti-inflammatory, antioxidant and hepato protective properties. Despite one report from Philippines detailing the use of L. speciosa as curative for fever and as well as diuretic, there is no experimental evidence about the hepatoprotective activity of the flower extracts. METHODS: Several spectroscopic methods, including GC-MS, were used to characterize phytochemicals present in the petal extract of L...
January 18, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28099473/the-staphylococcus-aureus-srrab-regulatory-system-modulates-hydrogen-peroxide-resistance-factors-which-imparts-protection-to-aconitase-during-aerobic-growth
#13
Ameya A Mashruwala, Jeffrey M Boyd
The SrrAB two-component regulatory system (TCRS) positively influences the transcription of genes involved in aerobic respiration in response to changes in respiratory flux. Hydrogen peroxide (H2O2) can arise as a byproduct of spontaneous interactions between dioxygen and components of respiratory pathways. H2O2 damages cellular factors including protein associated iron-sulfur cluster prosthetic groups. We found that a Staphylococcus aureus strain lacking the SrrAB two-component regulatory system (TCRS) is sensitive to H2O2 intoxication...
2017: PloS One
https://www.readbyqxmd.com/read/28099375/routine-neurosurgical-consultation-is-not-necessary-in-mild-blunt-traumatic-brain-injury
#14
Paul R Lewis, Casey E Dunne, James D Wallace, Jason B Brill, Richard Y Calvo, Jayraan Badiee, Michael J Sise, Vishal Bansal, C Beth Sise, Steven R Shackford
BACKGROUND: The Brain Trauma Foundation guidelines provide indications for neurosurgical intervention in traumatic brain injury (TBI) with moderate or severe intracranial hemorrhage (ICH). In TBI patients with less severe ICH, the utility of neurosurgical consultation remains unclear. We sought to determine if routine neurosurgical consultation is necessary for mild blunt TBI patients with ICH. METHODS: A retrospective cohort study was conducted on 500 consecutive blunt TBI patients aged 15 years or older with Glasgow Coma Scale score ≥13 and ICH on initial head computed tomography (CT) admitted to a Level 1 trauma center over 28 months...
January 17, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28099119/interference-in-na-measurements-on-the-siemens-rapidpoint%C3%A2-500-after-nortriptyline-intoxication-a-case-report
#15
Eline A E van der Hagen, Kees C J Smeekens, Nils E van 't Veer, Kristel J M Boonen, Antonius A M Ermens
No abstract text is available yet for this article.
January 18, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28098995/a-chemometrics-approach-to-the-investigation-of-the-intraspecific-variability-of-the-volatile-oil-of-eupatorium-tremulum-from-southern-brazil
#16
Tiago J T de Souza, Sérgio A L Bordignon, Miriam A Apel
Eupatorium tremulum is a South American shrub reported to cause cattle digestive intoxication, of which the volatile oil, mainly composed by bisabolane- and amorphane-type sesquiterpenoids, exhibits high quantitative variability. This report describes the application of chemometric tools for the identification of volatile compounds that characterize phenophasical changes in the plant. Preblooming, blooming, and postblooming specimens were paired-sampled and submitted to hydrodistillation and GC-MS analysis...
January 18, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/28098946/negative-association-between-mr-spectroscopic-glutamate-markers-and-gray-matter-volume-after-alcohol-withdrawal-in-the-hippocampus-a-translational-study-in-humans-and-rats
#17
Ulrich Frischknecht, Derik Hermann, Nuran Tunc-Skarka, Guo-Ying Wang, Markus Sack, Julia van Eijk, Traute Demirakca, Claudia Falfan-Melgoza, Bertram Krumm, Sandra Dieter, Rainer Spanagel, Falk Kiefer, Karl F Mann, Wolfgang H Sommer, Gabriele Ende, Wolfgang Weber-Fahr
BACKGROUND: Both chronic alcohol consumption and alcohol withdrawal lead to neural tissue damage which partly recovers during abstinence. This study investigated withdrawal-associated changes in glutamatergic compounds, markers of neuronal integrity, and gray matter volumes during acute alcohol withdrawal in the hippocampus, a key region in development and maintenance of alcohol dependence in humans and rats. METHODS: Alcohol-dependent patients (N = 39) underwent magnetic resonance imaging (MRI) and MR spectroscopy (MRS) measurements within 24 hours after the last drink and after 2 weeks of abstinence...
January 18, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28098782/auranofin-inhibits-the-enzyme-activity-of-pasteurella-multocida-toxin-pmt-in-human-cells-and-protects-cells-from-intoxication
#18
Stefan Carle, Thorsten Brink, Joachim H C Orth, Klaus Aktories, Holger Barth
The AB-type protein toxin from Pasteurella multocida (PMT) contains a functionally important disulfide bond within its catalytic domain, which must be cleaved in the host cell cytosol to render the catalytic domain of PMT into its active conformation. Here, we found that the reductive potential of the cytosol of target cells, and more specifically, the activity of the thioredoxin reductase (TrxR) is crucial for this process. This was demonstrated by the strong inhibitory effect of the pharmacological TrxR inhibitor auranofin, which inhibited the intoxication of target cells with PMT, as determined by analyzing the PMT-catalyzed deamidation of GTP-binding proteins (G-proteins) in the cytosol of cells...
January 13, 2017: Toxins
https://www.readbyqxmd.com/read/28098117/denosumab-for-the-treatment-of-bisphosphonate-resistant-hypercalcemia-in-a-hemodialysis-patient
#19
Omar Dahmani, Christine Sophoclis, Malika Kebir, Djemai Bouguern, Aboubacry Sakho, Pascale Demarchi
The acronym of malignancy, iatrogenic, intoxication and immobilization, sarcoidosis, hyperparathyroidism and hyperthyroidism, milk-alkali syndrome, and paget is very helpful in diagnosing hypercalcemia. We report on a 94-year-old patient with history of end-stage renal failure secondary to benign nephroangiosclerosis, who was on maintenance hemodialysis during dialysis, his blood chemistry revealed mild hypercalcemia (2.66 mmol/L) with normal level of intact primary hyperparathyroidism (32.37 ng/mL) mandating the discontinuation of Vitamin D[3]...
January 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28097252/enterococcus-faecalis-causing-delayed-spondylodiscitis-in-a-case-with-retained-intraspinal-bullet
#20
Siddharth N Aiyer, Ajoy Prasad Shetty, Rishi Kanna, Srikanth Reddy, Shanmuganathan Rajasekaran
Delayed presentations have been reported following gunshot wounds (GSW) with retained intraspinal bullets due to migration of projectile or lead intoxication. We report on the rare occurrence of delayed pyogenic spondylodiscitis and neurological dysfunction following injury from low velocity GSW to the spine with a retained projectile. A 55-year-old male presented 4 months following GSW to the abdomen which resulted in colonic injury and L5 fracture. The patient was treated initially with ileo-transverse anastomosis, antibiotics, without retrieval of the bullet...
December 2016: Journal of Spine Surgery (Hong Kong)
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