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https://www.readbyqxmd.com/read/28424803/use-of-a-flumazenil-infusion-to-treat-chlordiazepoxide-toxicity
#1
I R Wallace, E C Campbell, M Trimble
"Alcohol detox" is a common presentation to acute medical services and is usually managed via standardised guidelines and protocols. We present a case of chlordiazepoxide toxicity, requiring repeated bolus doses and subsequently 24 hours of an intravenous infusion of flumazenil in response to guideline directed management of an alcohol withdrawal state. The use of prolonged flumazenil infusions to treat benzodiazepine toxicity is infrequently described. Chlordiazepoxide is metabolised in the hepatic microsomal pathway and hepatic impairment can lead to accumulation of toxic metabolites, which may have been the explanation for toxicity in this case...
2017: Acute Medicine
https://www.readbyqxmd.com/read/28408246/renal-protective-effect-and-action-mechanism-of-huangkui-capsule-and-its-main-five-flavonoids
#2
Hong-Die Cai, Shu-Lan Su, Da-Wei Qian, Sheng Guo, Wei-Wei Tao, Xu Dong Cong, Renmao Tang, Jin-Ao Duan
ETHNOPHARMACOLOGICAL RELEVANCE: The flower of Abelmoschus manihot (Linn.) Medicus (A. manihot), as a traditional Chinese Herbal medicine, was used widely in China with efficacy of inducing diuresis for treating strangurtia, and subdhing swelling and detoxicating. It has been reported that Huangkui capsule, prepared by the extract of the flower of A. manihot, can reduce the content of urinary protein, serum creatinine and serum urea nitrogen in nephropathy rats and processes renoprotective activity, while the action mechanism need to illuminate deeply...
April 10, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28406517/biochemical-studies-of-inositol-n-acetylglucosaminyltransferase-involved-in-mycothiol-biosynthesis-in-corynebacterium-diphtheria
#3
Yuchuan Guo, Lizhen Wang, Jiatong Guo, Guofeng Gu, Zhongwu Guo
Mycothiol (MSH) is the predominant low molecular weight thiol produced by actinomycetes, and it plays a pivotal role in the bacterial detoxication process. 1L-myo-Inositol-1-phosphate (1L-Ins-1-P) α-N-acetylglucosaminyltransferase (GlcNAc-T), known as MshA, is the only glycosyltransferase involved in MSH biosynthesis. In this work, the MshA from Corynebacterium diphtheria, named as CdMshA, was expressed, purified, and studied in detail. Its enzymatic activity to transfer GlcNAc to 1L-Ins-1-P was confirmed by the isolation and rigorous characterization of its reaction product 3-phospho-1-d-myo-inositol-2-acetamido-2-deoxy-α-d-glucopyranoside...
April 13, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/28402675/mechanistic-insight-into-the-molecular-tio2-mediated-gas-phase-detoxication-of-dmmp-a-theoretical-approach
#4
Tamalika Ash, Tanay Debnath, Avik Ghosh, Abhijit Kr Das
The detoxication of DMMP (Dimethyl methylphosphonate) mediated by molecular TiO2 has been investigated computationally using density functional theory (DFT). From our previous studies, it is evident that the unimolecular detoxication of OPCs (Organophosphorus compound) is kinetically unfeasible at room temperature due to significantly high activation barrier. Thus, the aim of our work is to find out whether molecular TiO2 can make any significant impact on the kinetic feasibility of the detoxication processes or not...
April 12, 2017: Chemical Research in Toxicology
https://www.readbyqxmd.com/read/28385078/paris-polyphylla-suppresses-proliferation-and-vasculogenic-mimicry-of-human-osteosarcoma-cells-and-inhibits-tumor-growth-in-vivo
#5
Nan Yao, Ke Ren, Yimin Wang, Qiaomei Jin, Xiao Lu, Yan Lu, Cuihua Jiang, Dongjian Zhang, Jun Lu, Chen Wang, Jiege Huo, Yong Chen, Jian Zhang
Paris polyphylla, a traditional antipyretic-detoxicate chinese medicinal herb, has been applied extensively in cancer treatments for nearly 2000 years. The purpose of the present study is to evaluate the potential anti-osteosarcoma effects of Paris polyphylla ethanol extract (PPEE) and to investigate its underlying mechanisms. The antiproliferation activity of PPEE was tested on 143B, MG-63, U-2 OS and hFOB1.19 cells using MTT assay. The pro-apoptotic and cell cycle arrest effects of PPEE were confirmed by Hoechst 33342 staining and flow cytometry...
April 6, 2017: American Journal of Chinese Medicine
https://www.readbyqxmd.com/read/28356881/association-of-gsto1-and-gsto2-polymorphism-with-risk-of-end-stage-renal-disease-development-and-patient-survival
#6
Slavica Cimbaljevic, Sonja Suvakov, Marija Matic, Marija Pljesa-Ercegovac, Tatjana Pekmezovic, Tanja Radic, Vesna Coric, Tatjana Damjanovic, Nada Dimkovic, Rodoljub Markovic, Ana Savic-Radojevic, Tatjana Simic
BACKGROUND: Oxidative stress in patients with end-stage renal disease (ESRD) is associated with long-term cardiovascular complications. The cytosolic family of glutathione S-transferases (GSTs) is involved in the detoxication of various toxic compounds and antioxidant protection. GST omega class members, GSTO1 and GSTO2 possess, unlike other GSTs, dehydroascorbate reductase and deglutathionylation activities. The aim of this study was to clarify the role of genetic polymorphisms of GSTO1 (rs4925) and GSTO2 (rs156697) as risk determinants for ESRD development, as well as in the survival of these patients...
September 2016: Journal of Medical Biochemistry
https://www.readbyqxmd.com/read/28352354/antifreeze-poisoning-a-case-report
#7
Xiaofei Wu, Guoyu Lu, Benquan Qi, Ran Wang, Daohua Guo, Xiaolin Liu
The current study reported the case of a 35-year-old male that presented with antifreeze poisoning. The clinical manifestations, laboratory investigations and treatments were analyzed, and the obtained results were compared with those in previous reports. Subsequent to consuming antifreeze, the patient mainly presented nausea and agitation, without disturbance of consciousness. Laboratory investigations indicated severe metabolic acidosis, renal dysfunction and hyperkalemia. The patient underwent hemodialysis and his condition was significantly improved on the day of admission...
February 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28240222/intraspecific-variation-among-tetranychid-mites-for-ability-to-detoxify-and-to-induce-plant-defenses
#8
Rika Ozawa, Hiroki Endo, Mei Iijima, Koichi Sugimoto, Junji Takabayashi, Tetsuo Gotoh, Gen-Ichiro Arimura
Two genotypes coexist among Kanzawa spider mites, one of which causes red scars and the other of which causes white scars on leaves, and they elicit different defense responses in host plants. Based on RNA-Seq analysis, we revealed here that the expression levels of genes involved in the detoxification system were higher in Red strains than White strains. The corresponding enzyme activities as well as performances for acaricide resistance and host adaptation toward Laminaceae were also higher in Red strains than White strains, indicating that Red strains were superior in trait(s) of the detox system...
February 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28179188/diacetyl-and-related-flavorant-%C3%AE-diketones-biotransformation-cellular-interactions-and-respiratory-tract-toxicity
#9
M W Anders
Exposure to diacetyl and related α-diketones causes respiratory-tract damage in humans and experimental animals. Chemical toxicity is often associated with covalent modification of cellular nucleophiles by electrophilic chemicals. Electrophilic α-diketones may covalently modify nucleophilic arginine residues in critical proteins and, thereby, produce the observed respiratory-tract pathology. The major pathway for the biotransformation of α-diketones is reduction to α-hydroxyketones (acyloins), which is catalyzed by NAD(P)H-dependent enzymes of the short-chain dehydrogenase/reductase (SDR) and the aldo-keto reductase (AKR) superfamilies...
February 5, 2017: Toxicology
https://www.readbyqxmd.com/read/28166271/transcriptional-deregulation-of-genetic-biomarkers-in-chironomus-riparius-larvae-exposed-to-ecologically-relevant-concentrations-of-di-2-ethylhexyl-phthalate-dehp
#10
Óscar Herrero, Gloria Morcillo, Rosario Planelló
Di(2-ethylhexyl) phthalate (DEHP) is a ubiquitous environmental pollutant used worldwide as a plasticizer and solvent in many formulations. Based on available toxicological data, it has been classified as toxic for reproduction and as an endocrine disruptor. Despite this, ecotoxicological studies in aquatic wildlife organisms are still scarce. In the present work, the toxic molecular alterations caused by DEHP in aquatic larvae of the midge Chironomus riparius have been studied, by analyzing the transcriptional activity of genes related to some vital cellular pathways, such as the ribosomal machinery (rpL4, rpL13), the cell stress response (hsc70, hsp70, hsp40, hsp27), the ecdysone hormone pathway (EcR), the energy metabolism (GAPDH), and detoxication processes (CYP4G)...
2017: PloS One
https://www.readbyqxmd.com/read/28126569/assessment-of-ionic-liquids-toxicity-through-the-inhibition-of-acylase-i-activity-on-a-microflow-system
#11
Ana M O Azevedo, Sarah A P Pereira, Marieta L C Passos, Susana P F Costa, Paula C A G Pinto, André R T S Araujo, M Lúcia M F S Saraiva
Acylase I (ACY I) plays a role in the detoxication and bioactivation of xenobiotics as well in other physiological functions. In this context, an automated ACY I assay for the evaluation of ionic liquids' (ILs) toxicity was developed. The assay was implemented in a sequential injection analysis (SIA) system and was applied to eight commercially available ILs. The SIA methodology was based on the deacetylation of N-acetyl-l-methionine with production of l-methionine, which was determined using fluorescamine...
April 2017: Chemosphere
https://www.readbyqxmd.com/read/28074222/regulation-of-membrane-fixation-and-energy-production-conversion-for-adaptation-and-recovery-of-zno-nanoparticle-impacted-nitrosomonas-europaea
#12
Junkang Wu, Huijie Lu, Guangcan Zhu, Lianghui Chen, Yan Chang, Ran Yu
The ZnO nanoparticle (NP) effects on typical ammonia-oxidizing bacteria, Nitrosomonas europaea in a chemostat bioreactor, and the cells' toxicity adaptation and recovery potentials were explored. Hardly any inhibition was observed when the NP concentration was high up to 10 mg/L. The cells exposed to 50 mg/L ZnO NPs displayed time-dependent impairment and recovery potentials in terms of cell density, membrane integrity, nitrite production rate, and ammonia monooxygenase activity. The 6-h NP stress impaired cells were nearly completely restored during a 12-h recovery incubation, while the longer exposure time would cause irretrievable cell damage...
April 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28017185/failure-to-get-into-substance-abuse-treatment
#13
Dennis G Fisher, Grace L Reynolds, Laura H D'Anna, David W Hosmer, Kholoud Hardan-Khalil
Among substance abusers in the US, the discrepancy in the number who access substance abuse treatment and the number who need treatment is sizable. This results in a major public health problem of access to treatment. The purpose of this study was to examine characteristics of Persons Who Use Drugs (PWUDs) that either hinder or facilitate access to treatment. 2646 participants were administered the Risk Behavior Assessment (RBA) and the Barratt Impulsiveness Scale. The RBA included the dependent variable which was responses to the question "During the last year, have you ever tried, but been unable, to get into a drug treatment or detox program?" In multivariate analysis, factors associated with being unable to access treatment included: Previously been in drug treatment (OR=4...
February 2017: Journal of Substance Abuse Treatment
https://www.readbyqxmd.com/read/28008985/an-exceptionally-facile-two-step-structural-isomerization-and-detoxication-via-a-water-assisted-double-lossen-rearrangement
#14
Feng Li, Chun-Hua Huang, Lin-Na Xie, Na Qu, Jie Shao, Bo Shao, Ben-Zhan Zhu
N-hydroxyphthalimide (NHPI), which is best known as an organocatalyst for efficient C-H activation, has been found to be oxidized by quinoid compounds to its corresponding catalytically active nitroxide-radical. Here, we found that NHPI can be isomerized into isatoic anhydride by an unusually facile two-step method using tetrachloro-1,4-benzoquinone (TCBQ, p-chloranil), accompanied by a two-step hydrolytic dechlorination of highly toxic TCBQ into the much less toxic dihydroxylation product, 2,5-dichloro-3,6-dihydroxy-1,4-benzoquinone (chloranilic acid)...
December 23, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27823623/the-water-extract-of-veratrilla-baillonii-could-attenuate-the-subacute-toxicity-induced-by-aconitum-brachypodum
#15
You Yu, Xue-Jia Yi, Zhi-Yi Mei, Jun Li, Xian-Ju Huang, Guang-Zhong Yang, Li-Qun Ma, Yue Gao
BACKGROUND: Aconitum brachypodum Diels (Family Ranunculaceae) is a Chinese ethnodrug and is well known for both its therapeutic application and high toxicity. However, no detoxication strategy is available for the complete elimination of the toxicity of Aconitum plants. Veratrilla baillonii Franch is believed to possess antitoxic effects on the toxicity induced by Aconitum plants and has been clinically used for hundreds of time by Naxi and Lisu nationalities in Yunnan Province of China...
December 1, 2016: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/27782404/membrane-fluidity-modulates-thermal-stability-and-ligand-binding-of-cytochrome-p4503a4-in-lipid-nanodiscs
#16
Wynton D McClary, John P Sumida, Michele Scian, Lorela Paço, William M Atkins
Cytochrome P4503A4 (CYP3A4) is a peripheral membrane protein that plays a major role in enzymatic detoxification of many drugs and toxins. CYP3A4 has an integral membrane N-terminal helix and a localized patch comprised of the G' and F' helix regions that are embedded in the membrane, but the effects of membrane composition on CYP3A4 function are unknown. Here, circular dichroism and differential scanning calorimetry were used to compare the stability of CYP3A4 in lipid bilayer nanodiscs with varying ratios of 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine to 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC)...
November 15, 2016: Biochemistry
https://www.readbyqxmd.com/read/27746335/nmr-based-metabonomics-study-on-the-effect-of-gancao-in-the-attenuation-of-toxicity-in-rats-induced-by-fuzi
#17
Bo Sun, Xubin Wang, Ruili Cao, Qi Zhang, Qiao Liu, Meifeng Xu, Ming Zhang, Xiangbo Du, Fangting Dong, Xianzhong Yan
ETHNOPHARMACOLOGICAL RELEVANCE: Fuzi, the processed lateral root of Aconitum carmichaelii Debeaux, is a traditional Chinese medicine used for its analgesic, antipyretic, anti-rheumatoid arthritis and anti-inflammation effects; however, it is also well known for its toxicity. Gancao, the root of Glycyrrhiza uralensis Fisch., is often used concurrently with Fuzi to alleviate its toxicity. However, the mechanism of detoxication is still not well clear. AIM OF THE STUDY: In this study, the effect of Gancao on the metabolic changes induced by Fuzi was investigated by NMR-based metabonomic approaches...
December 4, 2016: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/27734745/update-on-pharmacotherapy-for-treatment-of-opioid-use-disorder
#18
REVIEW
Daniel Ayanga, Daryl Shorter, Thomas R Kosten
Opioid Use Disorder (OUD) is a significant public health concern, negatively impacting the medical, psychological, and social domains of an individual's life as well as creating substantial burdens for society. Effective treatment interventions are necessary for reduction of OUD and its consequences. Pharmacotherapy represents a central component of management. Areas covered: This review focuses on pharmacologic strategies for OUD treatment, discussing both primary as well as adjunctive therapy modalities. We will discuss both medications used during detoxification to treat withdrawal, as well as those used as maintenance therapy...
December 2016: Expert Opinion on Pharmacotherapy
https://www.readbyqxmd.com/read/27723160/implementing-personal-health-budgets-in-england-a-user-led-approach-to-substance-misuse
#19
Elizabeth Welch, Karen Jones, James Caiels, Karen Windle, Rosalyn Bass
Personal health budgets (PHBs) in England have been viewed as a vehicle for developing a personalised patient-based strategy within the substance misuse care pathway. In 2009, the Department of Health announced a 3-year pilot programme of PHBs to explore opportunities offered by this new initiative across a number of long-term health conditions, and commissioned an independent evaluation to run alongside as well as a separate study involving two pilot sites that were implementing PHBs within the substance misuse service...
October 10, 2016: Health & Social Care in the Community
https://www.readbyqxmd.com/read/27659341/genomewide-analysis-of-mate-type-gene-family-in-maize-reveals-microsynteny-and-their-expression-patterns-under-aluminum-treatment
#20
Huasheng Zhu, Jiandong Wu, Yingli Jiang, Jing Jin, Wei Zhou, Yu Wang, Guomin Han, Yang Zhao, Beijiu Cheng
Multidrug and toxic compound extrusion (MATE) proteins are a group of secondary active transporters, which widely exist in all living organisms and play important role in the detoxication of endogenous secondary metabolites and exogenous agents. However, to date, no systematic and comprehensive study of this family is reported in maize. Here, a total of 49 MATE genes (ZmMATE) were identified and divided into seven groups by phylogenetic analysis. Conserved intro-exon structures and motif compositions were investigated in these genes...
September 2016: Journal of Genetics
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