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Detoxification

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https://www.readbyqxmd.com/read/27932543/members-of-the-zinc-cluster-factor-family-alters-virulence-in-candida-albicans
#1
Luca Issi, Rhys A Farrer, Kelly Pastor, Benjamin Landry, Toni Delorey, George W Bell, Dawn A Thompson, Christina A Cuomo, Reeta P Rao
Virtually all humans are colonized with Candida albicans However, in immunocompromised individuals this benign commensal organism becomes a serious, life-threatening pathogen. Here, we describe and analyze the regulatory networks that modulate innate responses in the host niches. We identified Zcf15 and Zcf29, two Zinc Cluster transcription Factors (ZCF) that are required for C. albicans virulence. Previous sequence analysis of clinical C. albicans isolates from immunocompromised patients indicates that both ZCF genes diverged during clonal evolution...
December 7, 2016: Genetics
https://www.readbyqxmd.com/read/27932274/a-glutathione-s-transferase-tugstd05-associated-with-acaricide-resistance-in-tetranychus-urticae-directly-metabolizes-the-complex-ii-inhibitor-cyflumetofen
#2
Nena Pavlidi, Mousaalreza Khalighi, Antonis Myridakis, Wannes Dermauw, Nicky Wybouw, Dimitra Tsakireli, Euripides G Stephanou, Nikolaos E Labrou, John Vontas, Thomas Van Leeuwen
Cyflumetofen is a recently introduced acaricide with a novel mode of action, acting as an inhibitor of complex II of mitochondrial electron transport chain. It is activated by hydrolysis and the resulting de-esterified metabolite is a much stronger inhibitor. Cyflumetofen represents a great addition for the control of mite species including Tetranychus urticae, a major agricultural pest, which has the ability to develop resistance to most classes of pesticides rapidly. A resistant strain (Tu008R) was recently described and synergism experiments pointed towards the involvement of GSTs...
December 5, 2016: Insect Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/27931714/host-plant-growth-promotion-and-cadmium-detoxification-in-solanum-nigrum-mediated-by-endophytic-fungi
#3
Abdur Rahim Khan, Ihsan Ullah, Muhammad Waqas, Gun-Seok Park, Abdul Latif Khan, Sung-Jun Hong, Rehman Ullah, Byung Kwon Jung, Chang Eon Park, Shafiq Ur-Rehman, In-Jung Lee, Jae-Ho Shin
Current investigation conducted to evaluate the associated fungal endophyte interactions of a Cd hyper-accumulator Solanum nigrum Korean ecotype under varying concentrations of Cd. Two indole-3-acetic acid (IAA) producing fungal strains, RSF-4L and RSF-6L, isolated from the leaves of S. nigrum, were initially screened for Cd tolerance and accumulation potential. In terms of dry biomass production, the strain RSF-6L showed higher tolerance and accumulation capacity for Cd toxicity in comparison to RSF-4L. Therefore, RSF-6L was applied in vivo to S...
February 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/27931186/transcriptome-profiling-reveals-differential-gene-expression-of-detoxification-enzymes-in-a-hemimetabolous-tobacco-pest-after-feeding-on-jasmonate-silenced-nicotiana-attenuata-plants
#4
Cristina M Crava, Christoph Brütting, Ian T Baldwin
BACKGROUND: The evolutionary arms race between plants and insects has driven the co-evolution of sophisticated defense mechanisms used by plants to deter herbivores and equally sophisticated strategies that enable phytophagous insects to rapidly detoxify the plant's defense metabolites. In this study, we identify the genetic determinants that enable the mirid, Tupiocoris notatus, to feed on its well-defended host plant, Nicotiana attenuata, an outstanding model for plant-insect interaction studies...
December 8, 2016: BMC Genomics
https://www.readbyqxmd.com/read/27930927/arsenic-affects-the-production-of-glucosinolate-thiol-and-phytochemical-compounds-a-comparison-of-two-brassica-cultivars
#5
Chandana Pandey, Rehna Augustine, Medha Panthri, Ismat Zia, Naveen C Bisht, Meetu Gupta
Arsenic (As), a non-essential metalloid, severely affects the normal functioning of plants, animals and humans. Plants play a crucial role in metabolic, physiological and numerous detoxification mechanisms to cope up with As induced stress. This study aimed to examine the differential response in two Brassica juncea cultivars, Varuna and Pusa Jagannath (PJn) exposed to different doses of As (50, 150, 300 μM) for 48 h duration. Change in morphological traits, concentration of individual as well as total GSL, sulfur related thiol proteins, sulfur content, and phytochemicals were analyzed in both cultivars...
November 30, 2016: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/27930293/the-plant-component-of-an-acheulian-diet-at-gesher-benot-ya-aqov-israel
#6
Yoel Melamed, Mordechai E Kislev, Eli Geffen, Simcha Lev-Yadun, Naama Goren-Inbar
Diet is central for understanding hominin evolution, adaptation, and environmental exploitation, but Paleolithic plant remains are scarce. A unique macrobotanical assemblage of 55 food plant taxa from the Acheulian site of Gesher Benot Ya'aqov, Israel includes seeds, fruits, nuts, vegetables, and plants producing underground storage organs. The food plant remains were part of a diet that also included aquatic and terrestrial fauna. This diverse assemblage, 780,000 y old, reflects a varied plant diet, staple plant foods, environmental knowledge, seasonality, and the use of fire in food processing...
December 5, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27929414/pb-2-effects-on-growth-lipids-and-protein-and-dna-profiles-of-the-thermophilic-bacterium-thermus-thermophilus
#7
Barbara Nicolaus, Annarita Poli, Paola Di Donato, Ida Romano, Giusi Laezza, Alessia Gioiello, Sergio Ulgiati, Florinda Fratianni, Filomena Nazzaro, Pierangelo Orlando, Stefano Dumontet
Extremophiles are organisms able to thrive in extreme environmental conditions and some of them show the ability to survive high doses of heavy metals thanks to defensive mechanisms provided by primary and secondary metabolic products, i.e., extremolytes, lipids, and extremozymes. This is why there is a growing scientific and industrial interest in the use of thermophilic bacteria in a host of tasks, from the environmental detoxification of heavy metal to industrial activities, such as bio-machining and bio-metallurgy...
December 6, 2016: Microorganisms
https://www.readbyqxmd.com/read/27929394/metabolism-of-ht-2-toxin-and-t-2-toxin-in-oats
#8
Jacqueline Meng-Reiterer, Christoph Bueschl, Justyna Rechthaler, Franz Berthiller, Marc Lemmens, Rainer Schuhmacher
The Fusarium mycotoxins HT-2 toxin (HT2) and T-2 toxin (T2) are frequent contaminants in oats. These toxins, but also their plant metabolites, may contribute to toxicological effects. This work describes the use of (13)C-assisted liquid chromatography-high-resolution mass spectrometry for the first comprehensive study on the biotransformation of HT2 and T2 in oats. Using this approach, 16 HT2 and 17 T2 metabolites were annotated including novel glycosylated and hydroxylated forms of the toxins, hydrolysis products, and conjugates with acetic acid, putative malic acid, malonic acid, and ferulic acid...
December 5, 2016: Toxins
https://www.readbyqxmd.com/read/27929076/aphids-transform-and-detoxify-the-mycotoxin-deoxynivalenol-via-a-type-ii-biotransformation-mechanism-yet-unknown-in-animals
#9
N De Zutter, K Audenaert, N Arroyo-Manzanares, M De Boevre, C Van Poucke, S De Saeger, G Haesaert, G Smagghe
Biotransformation of mycotoxins in animals comprises phase I and phase II metabolisation reactions. For the trichothecene deoxynivalenol (DON), several phase II biotransformation reactions have been described resulting in DON-glutathiones, DON-glucuronides and DON-sulfates made by glutathione-S-transferases, uridine-diphosphoglucuronyl transferases and sulfotransferases, respectively. These metabolites can be easily excreted and are less toxic than their free compounds. Here, we demonstrate for the first time in the animal kingdom the conversion of DON to DON-3-glucoside (DON-3G) via a model system with plant pathogenic aphids...
December 8, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27926589/dystonia-in-methylphenidate-withdrawal-a-case-report
#10
Lara Grau-López, Constanza Daigre, Nestor Mercado, Miquel Casas, Carlos Roncero
Few studies have described movement disorders as withdrawal symptoms during psychostimulant detoxification. Although dystonia has been reported as an uncommon adverse effect of methylphenidate treatment, it has not been described in the context of methylphenidate withdrawal. We report a case of dystonia as the main withdrawal symptom in a methylphenidate-dependent adult participating in an inpatient methylphenidate detoxification program. Although movement disorders such as dystonia are very rare adverse effects of methylphenidate withdrawal, practitioners need to be alert to this risk in order to initiate appropriate treatment...
December 6, 2016: Journal of Addiction Medicine
https://www.readbyqxmd.com/read/27924662/empathy-and-its-relationship-with-cognitive-and-emotional-functions-in-alcohol-dependency
#11
Almila Erol, Asusinem Akyalcin Kirdok, Nabi Zorlu, Serap Polat, Levent Mete
BACKGROUND: Empathy can be defined as the ability to understand the other's thoughts and feelings. It contains both cognitive and emotional components. AIMS: The aim of this study was to investigate the empathy ability of patients with alcohol dependency in association with cognitive and emotional functions, after acute detoxification and during long-term abstinence. METHODS: Thirty-three alcohol dependent inpatients that completed a detoxification process and stayed abstinent throughout the study, and 33 healthy comparison subjects that matched the patients for age, gender, and education level were included in the study...
December 7, 2016: Nordic Journal of Psychiatry
https://www.readbyqxmd.com/read/27924537/targeting-aflatoxin-biosynthetic-genes
#12
Ali Y Srour, Ahmad M Fakhoury, Robert L Brown
Chemical detoxification and physical destruction of aflatoxins in foods and feed commodities are mostly unattainable in a way that preserves the edibility of the food. Therefore, preventing mycotoxins in general and aflatoxins in particular from entering the food chain is a better approach. This requires early detection of the aflatoxin-causing organisms. Detection and quantification of aflatoxin-producing fungi has always been a challenge, especially within species of Aspergillus and Penicillium. Culture-based methods require a high level of expertise and a list of sophisticated equipment...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27924283/effects-of-the-dietary-detoxification-program-on-serum-%C3%AE-glutamyltransferase-anthropometric-data-and-metabolic-biomarkers-in-adults
#13
Ju Ah Kim, Jin Young Kim, Seung Wan Kang
BACKGROUND: Persistent Organic Pollutants (POPs) are well-known environmental contaminants which are associated with chronic diseases. As foods are the major sources of human exposure to toxic pollutants, we developed an integrated dietary and education program to eliminate the chemical toxin throughout the human body. The present study evaluated effects of the dietary detoxification program on serum γ-glutamyltransferase (GGT), anthropometric data and metabolic biomarkers in adults...
September 2016: Journal of Lifestyle Medicine
https://www.readbyqxmd.com/read/27923802/xanthohumol-prevents-dna-damage-by-dietary-carcinogens-results-of-a-human-intervention-trial
#14
Christoph Pichler, Franziska Ferk, Halh Al-Serori, Wolfgang Huber, Walter Jäger, Monika Waldherr, Miroslav Mišík, Michael Kundi, Armen Nersesyan, Irene Herbacek, Siegfried Knasmueller
Xanthohumol (XN) is a hop flavonoid contained in beers and soft drinks. In vitro and animal studies indicated that XN has DNA and cancer protective properties. To find out if it causes DNA protective effects in humans, an intervention trial was conducted in which the participants (n = 22) consumed a XN containing drink (12 mg XN/P/d). We monitored prevention of DNA damage induced by representatives of major groups of dietary carcinogens [i.e., nitrosodimethylamine (NDMA) benzo(a)pyrene (B(a)P) and the heterocyclic aromatic amine 2-amino-3-methylimidazo[4,5-f]quinoline (IQ)]...
December 6, 2016: Cancer Prevention Research
https://www.readbyqxmd.com/read/27923198/detoxification-with-titration-and-tapering-in-gamma-hydroxybutyrate-ghb-dependent-patients-the-dutch-ghb-monitor-project
#15
Boukje A G Dijkstra, Rama Kamal, Martijn S van Noorden, Hein de Haan, Anton J M Loonen, Cor A J De Jong
BACKGROUND AND AIMS: Gamma-hydroxybutyrate (GHB) detoxification procedures have been insufficiently studied for effectiveness and safety. Based on case reports, benzodiazepines are generally regarded as first-choice agents in GHB detoxification. Detoxification by titration and tapering (DeTiTap) with pharmaceutical GHB in an open-label consecutive case series of 23 GHB-dependent patients showed to be feasible, effective and safe. This study further explored the feasibility, effectiveness and safety of this detoxification procedure in a large group of patients...
November 21, 2016: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/27920621/toxins-toxicity-and-endotoxemia-a-historical-and-clinical-perspective-for-chiropractors
#16
REVIEW
David R Seaman
OBJECTIVE: The purpose of this commentary is to review the notion of toxicity in the context of chiropractic practice. DISCUSSION: The belief that body toxicity is the cause of disease has been promoted for thousands of years. Prior to the emergence of the chiropractic profession, the medical profession embraced the notion that the body becomes "toxic," requiring detoxification interventions or surgery. The legacy of body toxicity within the chiropractic approach to patient care began with Daniel David Palmer...
December 2016: Journal of Chiropractic Humanities
https://www.readbyqxmd.com/read/27919007/challenges-in-assignment-of-allosteric-effects-in-cytochrome-p450-catalyzed-substrate-oxidations-to-structural-dynamics-in-the-hemoprotein-architecture
#17
Peter Hlavica
Cytochrome P450s (CYP) represent a superfamily of b-type hemoproteins catalyzing NAD(P)H-dependent oxidative biotransformation of a vast array of natural and xenobiotic compounds. Many eu- and prokaryotic members of this class of monooxygenases display complex non-Michaelis-Menten saturation kinetics, suggestive of homo-/heterotropic cooperativity arising from substrate-/effector-induced allosteric interactions. Here, the paradigm of multiple-ligand occupancy of the catalytic pocket in combination with enzyme oligomerization provides the most favored explanations for the atypical kinetic patterns...
November 25, 2016: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/27918488/transcriptome-profiling-analysis-of-wolf-spider-pardosa-pseudoannulata-araneae-lycosidae-after-cadmium-exposure
#18
Chang-Chun Li, Yong Wang, Guo-Yuan Li, Yue-Li Yun, Yu-Jun Dai, Jian Chen, Yu Peng
Pardosa pseudoannulata is one of the most common wandering spiders in agricultural fields and a potentially good bioindicator for heavy metal contamination. However, little is known about the mechanisms by which spiders respond to heavy metals at the molecular level. In the present study, high-throughput transcriptome sequencing was employed to characterize the de novo transcriptome of the spiders and to identify differentially expressed genes (DEGs) after cadmium exposure. We obtained 60,489 assembled unigenes, 18,773 of which were annotated in the public databases...
December 3, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27918242/cross-interaction-between-ilyonectria-mors-panacis-isolates-infecting-korean-ginseng-and-ginseng-saponins-in-correlation-with-their-pathogenicity
#19
Mohamed El-Agamy Farh, Yeon-Ju Kim, Priyanka Singh, Deok Chun Yang
Ilyonectria mors-panacis belongs to I. radicicola-species complex and causes root rot and replant failure of ginseng in Asia and North America. The aims of this work were to identify I. mors-panacis that infect Korean ginseng using molecular approaches and to investigate whether their aggressiveness depends on their ability to metabolize ginseng saponins (ginsenosides) by their β-glucosidases, in comparison with other identified Ilyonectria species. Fourteen isolates were collected from culture collections or directly isolated from infected roots and mainly identified based on histone H3 (HIS H3) sequence...
December 5, 2016: Phytopathology
https://www.readbyqxmd.com/read/27916887/cucumber-metallothionein-like-2-csmtl2-exhibits-metal-binding-properties
#20
Yu Pan, Yanglu Pan, Junpeng Zhai, Yan Xiong, Jinhua Li, Xiaobing Du, Chenggang Su, Xingguo Zhang
We identified a novel member of the metallothionein (MT) family, Cucumis sativus metallothionein-like 2 (CsMTL2), by screening a young cucumber fruit complementary DNA (cDNA) library. The CsMTL2 encodes a putative 77-amino acid Class II MT protein that contains two cysteine (Cys)-rich domains separated by a Cys-free spacer region. We found that CsMTL2 expression was regulated by metal stress and was specifically induced by Cd(2+) treatment. We investigated the metal-binding characteristics of CsMTL2 and its possible role in the homeostasis and/or detoxification of metals by heterologous overexpression in Escherichia coli cells...
November 30, 2016: Genes
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