keyword
MENU ▼
Read by QxMD icon Read
search

SULT

keyword
https://www.readbyqxmd.com/read/28070880/on-the-molecular-basis-underlying-the-metabolism-of-tapentadol-through-sulfation
#1
Ahsan F Bairam, Mohammed I Rasool, Katsuhisa Kurogi, Ming-Cheh Liu
BACKGROUND AND OBJECTIVES: Previous studies reported that tapentadol-sulfate represented one of the major metabolites of tapentadol excreted in urine. The current study aimed to identify the human cytosolic sulfotransferases (SULTs) that is(are) capable of sulfating tapentadol and to examine whether human cells and human organ specimens are capable of sulfating tapentadol. METHODS: Thirteen human SULTs, previously expressed and purified, as well as human organ cytosols, were analyzed for tapentadol-sulfating activity using an established sulfotransferase assay...
January 10, 2017: European Journal of Drug Metabolism and Pharmacokinetics
https://www.readbyqxmd.com/read/28062095/the-liver-transcriptome-of-suckermouth-armoured-catfish-pterygoplichthys-anisitsi-loricariidae-identification-of-expansions-in-defensome-gene-families
#2
Thiago E Parente, Daniel A Moreira, Maithê G P Magalhães, Paula C C de Andrade, Carolina Furtado, Brian J Haas, John J Stegeman, Mark E Hahn
Pterygoplichthys is a genus of related suckermouth armoured catfishes native to South America, which have invaded tropical and subtropical regions worldwide. Physiological features, including an augmented resistance to organic xenobiotics, may have aided their settlement in foreign habitats. The liver transcriptome of Pterygoplichthys anisitsi was sequenced and used to characterize the diversity of mRNAs potentially involved in the responses to natural and anthropogenic chemicals. In total, 66,642 transcripts were assembled...
January 3, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28055299/guiding-bispecific-monovalent-antibody-formation-through-proteolysis-of-igg1-single-chain
#3
Nazzareno Dimasi, Ryan Fleming, Kris F Sachsenmeier, Binyam Bezabeh, Carl Hay, Jincheng Wu, Erin Sult, Saravanan Rajan, Li Zhuang, Peter Cariuk, Andrew Buchanan, Michael A Bowen, Herren Wu, Changshou Gao
We developed an IgG1 domain-tethering approach to guide the correct assembly of two light and two heavy chains, derived from two different antibodies, to form bispecific monovalent antibodies in IgG1 format. We show here that assembling two different light and heavy chains by sequentially connecting them with protease-cleavable polypeptide linkers results in the generation of monovalent bispecific antibodies that have IgG1 sequence, structure and functional properties. This approach was used to generate a bispecific monovalent antibody targeting the epidermal growth factor receptor and the type I insulin-like growth factor receptor that: 1) can be produced and purified using standard IgG1 techniques; 2) exhibits stability and structural features comparable to IgG1; 3) binds both targets simultaneously; and 4) has potent anti-tumor activity...
January 5, 2017: MAbs
https://www.readbyqxmd.com/read/28050713/metabolic-profiling-of-human-long-term-liver-models-and-hepatic-clearance-predictions-from-in-vitro-data-using-nonlinear-mixed-effects-modeling
#4
Nicole A Kratochwil, Christophe Meille, Stephen Fowler, Florian Klammers, Aynur Ekiciler, Birgit Molitor, Sandrine Simon, Isabelle Walter, Claudia McGinnis, Johanna Walther, Brian Leonard, Miriam Triyatni, Hassan Javanbakht, Christoph Funk, Franz Schuler, Thierry Lavé, Neil J Parrott
Early prediction of human clearance is often challenging, in particular for the growing number of low-clearance compounds. Long-term in vitro models have been developed which enable sophisticated hepatic drug disposition studies and improved clearance predictions. Here, the cell line HepG2, iPSC-derived hepatocytes (iCell®), the hepatic stem cell line HepaRG™, and human hepatocyte co-cultures (HμREL™ and HepatoPac®) were compared to primary hepatocyte suspension cultures with respect to their key metabolic activities...
January 3, 2017: AAPS Journal
https://www.readbyqxmd.com/read/28040644/transcriptional-changes-in-oysters-crassostrea-brasiliana-exposed-to-phenanthrene-at-different-salinities
#5
Flávia Lucena Zacchi, Daína de Lima, Fabrício Flores-Nunes, Jacó Joaquim Mattos, Karim Hahn Lüchmann, Carlos Henrique Araújo de Miranda Gomes, Márcia Caruso Bícego, Satie Taniguchi, Silvio Tarou Sasaki, Afonso Celso Dias Bainy
Euryhaline animals from estuaries, such as the oyster Crassostrea brasiliana, show physiological mechanisms of adaptation to tolerate salinity changes. These ecosystems receive constant input of xenobiotics from urban areas, including polycyclic aromatic hydrocarbons (PAHs), such as phenanthrene (PHE). In order to understand the influence of salinity on the molecular responses of C. brasiliana exposed to PHE, oysters were acclimatized to different salinities (35, 25 and 10) for 15days and then exposed to 100μgL(-1) PHE for 24h and 96h...
December 21, 2016: Aquatic Toxicology
https://www.readbyqxmd.com/read/28001382/bifunctional-photocatalysts-for-enantioselective-aerobic-oxidation-of-%C3%AE-ketoesters
#6
Wei Ding, Liang-Qiu Lu, Quan-Quan Zhou, Yi Wei, Jia-Rong Chen, Wen-Jing Xiao
A novel visible-light-responsive chiral ligand has been developed by grafting a triplet state photosensitizer to chiral bisoxazoline ligands. Complexation of this ligand with Ni(acac)2 results in a powerful catalyst for the asymmetric oxidation reaction of β-ketoesters, which uses oxygen or air as the green oxidant and visible light or sunlight as the ideal driving force. Using this protocol, products containing the α-hydroxy-β-dicarbonyl motif are produced in high yields and with excellent enantiopurities...
December 28, 2016: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/27911811/the-structure-of-the-catechin-binding-site-of-human-sulfotransferase-1a1
#7
Ian Cook, Ting Wang, Mark Girvin, Thomas S Leyh
We are just beginning to understand the allosteric regulation of the human cytosolic sulfotransferase (SULTs) family-13 disease-relevant enzymes that regulate the activities of hundreds, if not thousands, of signaling small molecules. SULT1A1, the predominant isoform in adult liver, harbors two noninteracting allosteric sites, each of which binds a different molecular family: the catechins (naturally occurring flavonols) and nonsteroidal antiinflammatory drugs (NSAIDs). Here, we present the structure of an SULT allosteric binding site-the catechin-binding site of SULT1A1 bound to epigallocatechin gallate (EGCG)...
December 13, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27897396/acid-mediated-synthesis-of-ordered-mesoporous-aluminosilicates-the-challenge-and-the-promise
#8
Selvam Parasuraman, Nunna Vamsi Krishna
A novel intrinsic hydrolysis method was employed, for the first-time, to synthesize well-ordered H-AlSBA-15 with trivalent aluminium exclusively in tetrahedral framework structure of SBA-15. Unlike other methods, which involve incorporation of aluminum ions in, both, framework (Brønsted) and non-framework (Lewis) sites of the silicate matrix, the intrinsic hydroly-sis method isomorphously substitutes aluminium ions in the tetrahedral network even at high aluminium content. This unique approach relies mainly on hydrolysis rates of inorganic (silicon and aluminium) precursors used for the preparation in such a way that the condensation occurs simultaneously so as to overcome the usually encountered difficulties in stabilizing aluminium ions in the silicate matrix...
November 29, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27896399/cytochrome-p450-mediated-metabolism-of-triclosan-attenuates-its-cytotoxicity-in-hepatic-cells
#9
Yuanfeng Wu, Priyanka Chitranshi, Lucie Loukotková, Gonçalo Gamboa da Costa, Frederick A Beland, Jie Zhang, Jia-Long Fang
Triclosan is a widely used broad-spectrum anti-bacterial agent. The objectives of this study were to identify which cytochrome P450 (CYP) isoforms metabolize triclosan and to examine the effects of CYP-mediated metabolism on triclosan-induced cytotoxicity. A panel of HepG2-derived cell lines was established, each of which overexpressed a single CYP isoform, including CYP1A1, CYP1A2, CYP1B1, CYP2A6, CYP2A7, CYP2A13, CYP2B6, CYP2C8, CYP2C9, CYP2C18, CYP2C19, CYP2D6, CYP2E1, CYP3A4, CYP3A5, CYP3A7, CYP4A11, and CYP4B1...
November 28, 2016: Archives of Toxicology
https://www.readbyqxmd.com/read/27884139/brominated-flame-retardants-in-placental-tissues-associations-with-infant-sex-and-thyroid-hormone-endpoints
#10
Christopher Leonetti, Craig M Butt, Kate Hoffman, Stephanie C Hammel, Marie Lynn Miranda, Heather M Stapleton
BACKGROUND: Brominated flame retardants (BFRs) are endocrine disruptors that bioaccumulate in the placenta, but it remains unclear if they disrupt tissue thyroid hormone (TH) metabolism. Our primary goal was to investigate associations between placental BFRs, TH levels, Type 3 deiodinase (DIO3) activity and TH sulfotransferase (SULT) activities. METHODS: Placenta samples collected from 95 women who delivered term (>37 weeks) infants in Durham, NC, USA (enrolled 2010-2011) were analyzed for polybrominated diphenyl ethers (PBDEs), 2,4,6-tribromophenol (2,4,6-TBP), THs (T4, T3 and rT3), and DIO3 and TH SULT activities...
November 25, 2016: Environmental Health: a Global Access Science Source
https://www.readbyqxmd.com/read/27882569/selective-reduction-in-the-expression-of-ugts-and-sults-a-novel-mechanism-by-which-piperine-enhances-the-bioavailability-of-curcumin-in-rat
#11
Xiaohui Zeng, Dake Cai, Qiaohuang Zeng, Zhao Chen, Guoping Zhong, Juncheng Zhuo, Haining Gan, Xuejun Huang, Ziming Zhao, Nan Yao, Dane Huang, Chengzhe Zhang, Dongmei Sun, Yuxing Chen
Curcumin (CUR) is known to exert numerous health-promoting effects in pharmacological studies, but its low-bioavailability hinders the development of CUR as a feasible therapeutic agent. Piperine (PIP) has been reported to enhance the bioavailability of CUR, but the underlying mechanism remains poorly understood. In an attempt to find the mechanism by which PIP enhances the bioavailability of CUR, dosage ratio (CUR: PIP) and PIP pre-treatment are hypothesized as key factors for bioavailability improvement in this combination...
November 23, 2016: Biopharmaceutics & Drug Disposition
https://www.readbyqxmd.com/read/27855415/instrumented-trail-making-task-to-differentiate-persons-with-no-cognitive-impairment-amnestic-mild-cognitive-impairment-and-alzheimer-disease-a-proof-of-concept-study
#12
He Zhou, Marwan Sabbagh, Rachel Wyman, Carolyn Liebsack, Mark E Kunik, Bijan Najafi
BACKGROUND: Objective and time-effective tools are needed to identify motor-cognitive impairment and facilitate early intervention. OBJECTIVE: We examined the feasibility, accuracy, and reliability of an instrumented trail-making task (iTMT) using a wearable sensor to identify motor-cognitive impairment among older adults. METHODS: Thirty subjects (age = 82.2 + 6.1 years, body mass index = 25.7 + 4.8, female = 43.3%) in 3 age-matched groups, 11 healthy, 10 with amnestic mild cognitive impairment (aMCI), and 9 with Alzheimer disease (AD), were recruited...
November 18, 2016: Gerontology
https://www.readbyqxmd.com/read/27849938/296-innovative-resuscitation-unit-expedited-critically-ill-transfers-from-outside-emergency-departments
#13
Quincy Tran, James O'Connor, Thomas Scalea, Leslie Sult, Ashley Aitken, Eric Lund, Theresa DiNardo, Lewis Rubinson
No abstract text is available yet for this article.
December 2016: Critical Care Medicine
https://www.readbyqxmd.com/read/27688058/current-insights-into-the-sulfatase-pathway-in-human-testis-and-cultured-sertoli-cells
#14
K Hartmann, J Bennien, B Wapelhorst, K Bakhaus, V Schumacher, S Kliesch, W Weidner, M Bergmann, J Geyer, D Fietz
Within the human testis, large amounts of sulfated steroid hormones are produced. As shown in breast tissue and placenta, these might not only be excretion intermediates, but re-activated in target cells by steroid sulfatase (STS). This process is called sulfatase pathway and may play a pivotal role in para- and/or intracrine regulation by creating a local supply for steroid hormones. This requires a facilitated transport via uptake carriers and efflux transporters as these hydrophilic molecules cannot pass the cell membrane...
December 2016: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/27649811/updated-perspectives-on-the-cytosolic-sulfotransferases-sults-and-sult-mediated-sulfation
#15
Masahito Suiko, Katsuhisa Kurogi, Takuyu Hashiguchi, Yoichi Sakakibara, Ming-Cheh Liu
The cytosolic sulfotransferases (SULTs) are Phase II detoxifying enzymes that mediate the sulfate conjugation of numerous xenobiotic molecules. While the research on the SULTs has lagged behind the research on Phase I cytochrome P-450 enzymes and other Phase II conjugating enzymes, it has gained more momentum in recent years. This review aims to summarize information obtained in several fronts of the research on the SULTs, including the range of the SULTs in different life forms, concerted actions of the SULTs and other Phase II enzymes, insights into the structure-function relationships of the SULTs, regulation of SULT expression and activity, developmental expression of SULTs, as well as the use of a zebrafish model for studying the developmental pharmacology/toxicology...
January 2017: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/27637483/role-of-exposure-recovery-schedule-in-micronuclei-induction-by-several-promutagens-in-v79-derived-cells-expressing-human-cyp2e1-and-sult1a1
#16
Hansi Jia, Chiteng Zhang, Hansruedi Glatt, Yungang Liu
The standard procedure for the micronucleus test in cell lines requires a short exposure (≤0.5 cell cycle) to the test compounds followed by a long recovery (≥1.5 cell cycle), and in case of negative or equivocal results, a second test with extended exposure (≥2 cell cycles) without or with a recovery time. In general the two procedures are advantageous for detecting clastogens and aneugens, respectively. However, whether the recommended procedures apply to micronucleus tests with promutagens in cell lines genetically engineered for expressing biotransformation enzymes has not been identified...
September 15, 2016: Mutation Research. Genetic Toxicology and Environmental Mutagenesis
https://www.readbyqxmd.com/read/27633141/the-natural-anthraquinones-from-rheum-palmatum-induced-the-metabolic-disorder-of-melatonin-by-inhibiting-human-cyp-and-sult-enzymes
#17
Weiru Jiang, Xiangge Tian, Yan Wang, Zheng Sun, Peipei Dong, Chao Wang, Xiaokui Huo, Baojing Zhang, Shanshan Huang, Sa Deng, Xiaobo Wang, Xiaochi Ma
Melatonin (Mel) as an endogenous hormone, has been widely used in clinic for multiple therapeutic purposes. Further, the natural anthraquinones were widespread in various plants including herbs, foods, and some flavoring agents. The present work aims to evaluate the metabolic disorder of Mel caused by various common herbs and further identify their underlying mechanism. More importantly, the relationships between inhibitory activity and their structures were also investigated. Our results demonstrate that some herbs containing anthraquinone derivatives exhibited strong inhibition on Mel metabolism...
November 16, 2016: Toxicology Letters
https://www.readbyqxmd.com/read/27627846/the-detoxification-responses-damage-effects-and-bioaccumulation-in-the-scallop-chlamys-farreri-exposed-to-single-and-mixtures-of-benzo-a-pyrene-and-chrysene
#18
Ruiming Guo, Luqing Pan, Pengfei Lin, Lei Zheng
This study aimed to investigate the detoxification responses, damage effects and biotransformation in scallop Chlamys farreri exposed to benzo[a]pyrene (BaP) (0.1, 1μg/L), chrysene (CHR) (0.1, 1μg/L) and BaP+CHR (0.1+0.1, 1+1μg/L) for 15days. Results demonstrated that BaP and CHR concentration (BaP<CHR) in tissues increased rapidly in a time and dose effect. The mRNA expression of aryl hydrocarbon receptor (AhR), cytochrome P450 1A1 (CYP1A1), CYP1B1, multidrug resistance protein 1 (MRP1/ABCC1), breast cancer resistance protein (BCRP/ABCG2) and P-glycoprotein (P-gp) were induced especially in the mixtures of BaP and CHR...
January 2017: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
https://www.readbyqxmd.com/read/27622332/co-inhibition-of-cd73-and-a2ar-adenosine-signaling-improves-anti-tumor-immune-responses
#19
Arabella Young, Shin Foong Ngiow, Deborah S Barkauskas, Erin Sult, Carl Hay, Stephen J Blake, Qihui Huang, Jing Liu, Kazuyoshi Takeda, Michele W L Teng, Kris Sachsenmeier, Mark J Smyth
Preclinical studies targeting the adenosinergic pathway have gained much attention for their clinical potential in overcoming tumor-induced immunosuppression. Here, we have identified that co-blockade of the ectonucleotidase that generates adenosine CD73 and the A2A adenosine receptor (A2AR) that mediates adenosine signaling in leuokocytes, by using compound gene-targeted mice or therapeutics that target these molecules, limits tumor initiation, growth, and metastasis. This tumor control requires effector lymphocytes and interferon-γ, while antibodies targeting CD73 promote an optimal therapeutic response in vivo when engaging activating Fc receptors...
September 12, 2016: Cancer Cell
https://www.readbyqxmd.com/read/27622077/targeting-cd73-in-the-tumor-microenvironment-with-medi9447
#20
Carl M Hay, Erin Sult, Qihui Huang, Kathy Mulgrew, Stacy R Fuhrmann, Kelly A McGlinchey, Scott A Hammond, Raymond Rothstein, Jonathan Rios-Doria, Edmund Poon, Nick Holoweckyj, Nicholas M Durham, Ching Ching Leow, Gundo Diedrich, Melissa Damschroder, Ronald Herbst, Robert E Hollingsworth, Kris F Sachsenmeier
MEDI9447 is a human monoclonal antibody that is specific for the ectoenzyme CD73 and currently undergoing Phase I clinical trials. Here we show that MEDI9447 is a potent inhibitor of CD73 ectonucleotidase activity, with wide ranging immune regulatory consequences. MEDI9447 results in relief from adenosine monophosphate (AMP)-mediated lymphocyte suppression in vitro and inhibition of mouse syngeneic tumor growth in vivo. In contrast with other cancer immunotherapy agents such as checkpoint inhibitors or T-cell agonists, MEDI9447 drives changes in both myeloid and lymphoid infiltrating leukocyte populations within the tumor microenvironment of mouse models...
August 2016: Oncoimmunology
keyword
keyword
101247
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"