abstract：:The neuroligins are postsynaptic cell adhesion proteins whose extracellular domain belongs to the alpha/beta-hydrolase fold family of proteins, a family characterized through the enzyme acetylcholinesterase (AChE) and other enzymes with various substrate specificities. Neuroligin associations with the pre-synaptic neu...

journal_title：Chemico-biological interactions

authors： Leone P,Comoletti D,Taylor P,Bourne Y,Marchot P

更新日期：2010-09-06 00:00:00

abstract：:Fluorogenic organophosphate inhibitors of acetylcholinesterase (AChE) homologous in structure to nerve agents provide useful probes for high throughput screening of mammalian paraoxonase (PON1) libraries generated by directed evolution of an engineered PON1 variant with wild-type like specificity (rePON1). Wt PON1 and...

journal_title：Chemico-biological interactions

authors： Ashani Y,Gupta RD,Goldsmith M,Silman I,Sussman JL,Tawfik DS,Leader H

更新日期：2010-09-06 00:00:00

abstract：:Dioxinodehydroeckol (DHE) isolated from Ecklonia cava, has previously been investigated for its inhibition of the differentiation of 3T3-L1 preadipocytes into adipocytes. Levels of lipid accumulation were measured, along with changes in the expression of genes and proteins associated with adipogenesis and lipolysis. C...

journal_title：Chemico-biological interactions

authors： Kim SK,Kong CS

更新日期：2010-06-07 00:00:00

abstract：:Polyphenols, coumarin (1,2-benzopyrone) and chromone (1,4-benzopyrone), are naturally occurring constituent of variety of plant species. They have attracted immense interest because of their diverse pharmacological activities. Not much was known about biological activities of acetyl derivative (polyphenolic acetates) ...

journal_title：Chemico-biological interactions

authors： Singh U,Kumar A,Sinha R,Manral S,Arora S,Ram S,Mishra RK,Gupta P,Bansal SK,Prasad AK,Biswal S,Parmar VS,Raj HG

更新日期：2010-05-14 00:00:00

abstract：:Benzene exposure in occupational settings often occurs with concurrent exposure to toluene, the methyl-substituted derivative of benzene. Toluene is also readily metabolized by CYP450 isozymes although oxidation primarily occurs in the methyl group. While earlier mouse studies addressing co-exposure to benzene and tol...

journal_title：Chemico-biological interactions

authors： Bird MG,Wetmore BA,Letinski DJ,Nicolich M,Chen M,Schnatter AR,Whitman FT

更新日期：2010-03-19 00:00:00

abstract：:Reactive metabolites formed from benzene include benzene oxide, trans,trans muconaldehyde, quinones, thiol adducts, phenolic metabolites and oxygen radicals. Susceptibility to the toxic effects of benzene has been suggested to occur partly because of polymorphisms in enzymes involved in benzene metabolism which includ...

journal_title：Chemico-biological interactions

authors： Ross D,Zhou H

更新日期：2010-03-19 00:00:00

abstract：:Benzene-induced hematopoietic toxicity is an aryl hydrocarbon receptor (AhR)-related adverse effect that is not exhibited in AhR-knockout (KO) mice. In the hematopoietic system, the steady-state expression of AhRs is limited in the hematopoietic progenitor cells; thus, a hierarchical hematopoietic impairment starts fr...

journal_title：Chemico-biological interactions

authors： Hirabayashi Y,Inoue T

更新日期：2010-03-19 00:00:00

abstract：:Metabolism is a prerequisite for the development of benzene-mediated myelotoxicity. Benzene is initially metabolized via cytochromes P450 (primarily CYP2E1 in liver) to benzene-oxide, which subsequently gives rise to a number of secondary products. Benzene-oxide equilibrates spontaneously with the corresponding oxepin...

journal_title：Chemico-biological interactions

authors： Monks TJ,Butterworth M,Lau SS

更新日期：2010-03-19 00:00:00

abstract：:Rhizoma Chuanxiong is widely used as folk medicine to treat the diseases caused by oxidative stress and inflammation. To delineate the underlying molecular mechanisms, we recently found that Rhizoma Chuanxiong extract significantly induced heme oxygenase-1 (HO-1), an enzyme that degrades intracellular heme into three ...

journal_title：Chemico-biological interactions

authors： Qi H,Siu SO,Chen Y,Han Y,Chu IK,Tong Y,Lau AS,Rong J

更新日期：2010-02-12 00:00:00

abstract：:The lipopolysaccharide (LPS)-Toll-like receptor 4 (TLR4) signaling pathway in alveolar epithelial cells plays an important role in many pathologic processes such as acute lung injury (ALI). The single immunoglobulin IL-1 receptor-related protein (SIGIRR) is an inhibitor of LPS-TLR4 signaling, but its expression and fu...

journal_title：Chemico-biological interactions

authors： Feng T,Yunfeng N,Jinbo Z,Zhipei Z,Huizhong Z,Li L,Tao J,Yunjie W

更新日期：2010-02-12 00:00:00

abstract：:Resveratrol (3,4',5-trans-trihydroxystilbene) and other hydroxystilbenes exhibit in vitro antioxidant as well as prooxidant effects. The antioxidant properties are assumed to enable these compounds to protect cells from oxidative damage. The prooxidant effects are held likely to be responsible for their cytotoxic, ant...

journal_title：Chemico-biological interactions

authors： Rüweler M,Gülden M,Maser E,Murias M,Seibert H

更新日期：2009-12-10 00:00:00

abstract：:Toll-like receptors (TLRs) detect invading microbial pathogens and initiate immune responses as part of host defense mechanisms. They also respond to host-derived substances released from injured cells and tissues to ensure wound healing and tissue homeostasis. Dysregulation of TLRs increases the risk of chronic infla...

journal_title：Chemico-biological interactions

authors： Kim YS,Park ZY,Kim SY,Jeong E,Lee JY

更新日期：2009-11-10 00:00:00

abstract：:To compare the effects of the food toxin 2-amino-1-methyl-6-phenyl-imidazo[4,5-b]pyridine (PhIP) and estradiol in hormone-responsive MCF-7 cells, the cells were exposed to different concentrations of either PhIP or estradiol. The effect of various culture conditions (e.g. phenol red, FBS, vehicle (DMSO/EtOH) and seedi...

journal_title：Chemico-biological interactions

authors： Immonen E,Serpi R,Vähäkangas K,Myllynen P

更新日期：2009-11-10 00:00:00

abstract：:The present study was an attempt to investigate the hepatoprotective and antioxidative property of Phyllanthus amarus (P. amarus) extract and phyllanthin. Phyllanthin, one of the active lignin present in this plant species was isolated from the aerial parts, by silica gel column chromatography employing gradient eluti...

journal_title：Chemico-biological interactions

authors： Krithika R,Mohankumar R,Verma RJ,Shrivastav PS,Mohamad IL,Gunasekaran P,Narasimhan S

更新日期：2009-10-30 00:00:00

abstract：:Passive paracellular absorption, regulated by tight junctions (TJs), is the main route for absorption of poorly absorbed hydrophilic substances. Surface active substances, such as fatty acids, may enhance absorption of these substances by affecting the integrity of TJ and increasing the permeability. It has been sugge...

journal_title：Chemico-biological interactions

authors： Aspenström-Fagerlund B,Sundström B,Tallkvist J,Ilbäck NG,Glynn AW

更新日期：2009-10-07 00:00:00

abstract：:Chemopreventive potential of Acacia nilotica bark extract (ANBE) against single intraperitoneal injection of N-nitrosodiethylamine (NDEA, 200mg/kg) followed by weekly subcutaneous injections of carbon tetrachloride (CCl(4), 3 ml/kg) for 6 weeks induced hepatocellular carcinoma (HCC) in rats was studied. At 45 day afte...

journal_title：Chemico-biological interactions

authors： Singh BN,Singh BR,Sarma BK,Singh HB

更新日期：2009-09-14 00:00:00

abstract：:Since skin cancer incidence and prevalence is constantly rising up the charts despite all efforts, search for newer, better agents for protection and treatment is required. Ginger (Zingiber officinale Roscoe), a monocotyledonous herb, is widely used as a herbal medicine, given the presence of homologous phenolic keton...

journal_title：Chemico-biological interactions

authors： Nigam N,Bhui K,Prasad S,George J,Shukla Y

更新日期：2009-09-14 00:00:00

abstract：:Andrographolide (Andro), a diterpenoid lactone isolated from a traditional herbal medicine Andrographis paniculata, is known to possess multiple pharmacological activities. In our previous study, Andro had been shown to have potent anti-cancer activity against human colorectal carcinoma Lovo cells by inhibiting cell-c...

journal_title：Chemico-biological interactions

authors： Shi MD,Lin HH,Chiang TA,Tsai LY,Tsai SM,Lee YC,Chen JH

更新日期：2009-08-14 00:00:00

abstract：:The effects of three fatty acids on cytotoxic aggregate formation of Ca(2+)-depleted bovine alpha-lactalbumin (apo-BLA) have been studied by UV absorbance spectroscopy and transmission electron microscopy. The experimental results demonstrate that two unsaturated fatty acids, oleic acid and linoleic acid, and one satu...

journal_title：Chemico-biological interactions

authors： Zhang M,Yang F Jr,Yang F,Chen J,Zheng CY,Liang Y

更新日期：2009-07-15 00:00:00

abstract：:2-azetidinones and 2H-azirines show antibacterial and cytotoxic activities, however the biological properties of molecules containing both 2H-azirine and 2-azetidinone functions in the same structure had never been evaluated before. In the present study, two 2H-azirine-2-azetidinones (1 and 2) and three 2H-azirines (3...

journal_title：Chemico-biological interactions

authors： Maia DP,Wilke DV,Mafezoli J,da Silva Júnior JN,de Moraes MO,Pessoa C,Costa-Lotufo LV

更新日期：2009-07-15 00:00:00

abstract：:As part of our continuing search for bioactive natural products from plants, the present study was carried out in order to evaluate the gastroprotective properties of alkaloid extract and 2-phenylquinoline obtained from the bark of Galipea longiflora (Rutaceae). Anti-ulcer assays were performed using the following pro...

journal_title：Chemico-biological interactions

authors： Zanatta F,Gandolfi RB,Lemos M,Ticona JC,Gimenez A,Clasen BK,Cechinel Filho V,de Andrade SF

更新日期：2009-07-15 00:00:00

abstract：:Increasing attention is being paid to the possibility of applying chemopreventive agents for the protection of individuals from cancer risk. The beneficial potential of chemoprotective compounds is usually well documented by extensive experimental data. To assure the desired effect, these compounds are frequently conc...

journal_title：Chemico-biological interactions

authors： Hodek P,Krízková J,Burdová K,Sulc M,Kizek R,Hudecek J,Stiborová M

更新日期：2009-06-15 00:00:00

abstract：:Alcohol dehydrogenase 3 (ADH3) has emerged as an important regulator of protein S-nitrosation in its function as S-nitrosoglutathione (GSNO) reductase. GSNO depletion is associated with various disease conditions, emphasizing the potential value of a specific ADH3 inhibitor. The present study investigated inhibition o...

journal_title：Chemico-biological interactions

authors： Staab CA,Hellgren M,Grafström RC,Höög JO

更新日期：2009-06-15 00:00:00

abstract：:Thiol oxidation by diphenyl ditelluride is a favorable reaction and may be responsible for alteration in regulatory or signaling pathways. We have measured rate constants for reactions of diphenyl ditelluride with cysteine, dimercaptosuccinic acid, glutathione and dithiothreitol in phosphate buffer. The relative react...

journal_title：Chemico-biological interactions

authors： Hassan W,Ibrahim M,Nogueira CW,Braga AL,Deobald AM,Mohammadzai IU,Rocha JB

更新日期：2009-06-15 00:00:00

abstract：:Aspirin is one of the oldest drugs and has been purported to have multiple beneficial effects, including prevention of cardiovascular disease and cancer, in addition to its original indication for treatment of inflammation, fever and pain. In cancer chemoprevention studies using animal models, two methods of aspirin a...

journal_title：Chemico-biological interactions

authors： Kapetanovic IM,Bauer KS,Tessier DM,Lindeblad MO,Zakharov AD,Lubet R,Lyubimov A

更新日期：2009-05-15 00:00:00

abstract：:Balbisia peduncularis, also known as "Amancay", is a plant of the Ledocarpaceae family that can be found in the Atacama Desert in northern Chile. Infusions of the plant have long being used in traditional herbal medicine. Its chemical composition indicates the presence of flavonoids, which have antioxidant properties....

journal_title：Chemico-biological interactions

authors： Suwalsky M,Oyarce K,Avello M,Villena F,Sotomayor CP

更新日期：2009-05-15 00:00:00

abstract：:Cysteine (Cys) residues are often crucial to the function and structure of proteins. Cys157 and Cys207 in recombinant mouse arsenic (+3 oxidation state) methyltransferase (AS3MT) are shown to be related to enzyme activity and considered to be the catalytic sites. The roles of some conserved Cys residues in the N-termi...

journal_title：Chemico-biological interactions

authors： Song X,Geng Z,Zhu J,Li C,Hu X,Bian N,Zhang X,Wang Z

更新日期：2009-05-15 00:00:00

abstract：:Arthritis is one of the most prevalent chronic inflammatory diseases, and it is characterized by structural and biochemical changes in major tissues of the joint, including degradation of the cartilage matrix, insufficient synthesis of extracellular matrix (ECM). Ecklonia cava (EC) is a member of the family of Laminar...

journal_title：Chemico-biological interactions

authors： Ryu B,Li Y,Qian ZJ,Kim MM,Kim SK

更新日期：2009-05-15 00:00:00

abstract：:Histone deacetylase (HDAC) inhibitors are a promising new class of anticancer agents that act by inhibiting cell proliferation and inducing apoptosis in a variety of cancer cells. Although apicidin acts as a potent HDAC inhibitor, the precise mechanism for its anti-tumor activity in human endometrial cancer cells is n...

journal_title：Chemico-biological interactions

authors： Ahn MY,Lee J,Na YJ,Choi WS,Lee BM,Kang KW,Kim HS

更新日期：2009-05-15 00:00:00

abstract：:Damage of cell membranes by reactive oxygen species results in the formation of toxic lipid peroxides which may ultimately lead to cell death. Among the best characterized intermediates of oxidative stress are the unsaturated aldehydes 4-hydroxynon-2-enal (4-HNE) and its oxidized counterpart 4-oxonon-2-enal (4-ONE). 4...

journal_title：Chemico-biological interactions

authors： Martin HJ,Maser E

更新日期：2009-03-16 00:00:00

abstract：:Our computer simulations of gamma glutamyl semialdehyde dehydrogenase (GGSALDH, pyrroline 5-carboxylate dehydrogenase, ALDH4) were initiated from the Thermus thermophilus crystal structures in an effort to understand the effects of a seemingly subtle mutation. In humans, a natural S352L mutation gives rise to type II ...

journal_title：Chemico-biological interactions

authors： Hempel J,Kraut A,Wymore T

更新日期：2009-03-16 00:00:00

abstract：:Alcohol dehydrogenase (ADH) and aldehyde dehydrogenase (ALDH) are the principal enzymes responsible for metabolism of ethanol. Both ADH and ALDH exhibit genetic polymorphisms among racial populations. Functional variant alleles ADH1B*2 and ALDH2*2 have been consistently replicated to show protection against developing...

journal_title：Chemico-biological interactions

authors： Chen YC,Peng GS,Wang MF,Tsao TP,Yin SJ

更新日期：2009-03-16 00:00:00

abstract：:Oxidative stress is a major cause of drug induced hepatic diseases. The present study aims to investigate the antioxidative signaling mechanism of a protein isolated from the herb, Cajanus indicus against acetaminophen induced necrotic cell death. We found that incubation of hepatocytes with the protein prevented acet...

journal_title：Chemico-biological interactions

authors： Ghosh A,Sil PC

更新日期：2009-01-27 00:00:00

abstract：:Increased oxidative stress and apoptosis have been implicated in the cardiotoxicity that limits the clinical use of doxorubicin (DOX) as an anti-tumoral drug, but the mechanism of DOX-mediated apoptosis remains unclear. We examined the interplay between oxidative stress and cell death in cardiac-derived H9c2 myocytes ...

journal_title：Chemico-biological interactions

authors： Bernuzzi F,Recalcati S,Alberghini A,Cairo G

更新日期：2009-01-15 00:00:00

abstract：:Oxidative stress can induce complex alterations of membrane proteins in red blood cells (RBCs) eventually leading to hemolysis. RBCs represent a good model to investigate the damage induced by oxidizing agents. Literature data have reported that chalcogen compounds can present pro-oxidant properties with potent inhibi...

journal_title：Chemico-biological interactions

authors： Schiar VP,Dos Santos DB,Paixão MW,Nogueira CW,Rocha JB,Zeni G

更新日期：2009-01-15 00:00:00

abstract：:The polycyclic aromatic hydrocarbon (PAH) benzo[ghi]perylene (BghiP) lacks a "classic" bay-region and is therefore unable to form vicinal dihydrodiol epoxides thought to be responsible for the genotoxicity of carcinogenic PAHs like benzo[a]pyrene. The bacterial mutagenicity of BghiP increases considerably after inhibi...

journal_title：Chemico-biological interactions

authors： Platt KL,Grupe S,Fickler M

更新日期：2008-11-25 00:00:00

abstract：:10-(2-pyrazolyl-ethoxy)-(20S)-camptothecin (CPT13) is a novel semi-synthetic analogue of camptothecin, our previous report had shown that it possessed higher in vitro cytoxicity activity towards human colon cancer HCT8 cell line than topotecan. In this study, the anti-proliferative effect of CPT13 on HCT8 cell line in...

journal_title：Chemico-biological interactions

authors： Wang LM,Li QY,Zu YG,Fu YJ,Chen LY,Lv HY,Yao LP,Jiang SG

更新日期：2008-11-25 00:00:00

abstract：:Wild-type human butyrylcholinesterase (BuChE) has proven to be an efficient bioscavenger for protection against nerve agent toxicity. Human acetylcholinesterase (AChE) has a similar potential. A limitation to their usefulness is that both cholinesterases (ChEs) react stoichiometrically with organophosphosphorus (OP) e...

journal_title：Chemico-biological interactions

authors： Masson P,Nachon F,Broomfield CA,Lenz DE,Verdier L,Schopfer LM,Lockridge O

更新日期：2008-09-25 00:00:00

abstract：:We examined the sensitivity of AChE(+/-) mice to the amnesic effects of scopolamine and amyloid beta peptide. AChE(+/-) and AChE(+/+) littermates, tested at 5-9 weeks of age, failed to show any difference in locomotion, exploration and anxiety in the open-field test, or in-place learning in the water-maze. However, wh...

journal_title：Chemico-biological interactions

authors： Espallergues J,Galvan L,Lepourry L,Bonafos B,Maurice T,Chatonnet A

更新日期：2008-09-25 00:00:00

abstract：:Butyrylcholinesterase (BChE) is coded by the BCHE gene that presents four exons. The non-codifying exon 1 presents two variants -116G and -116A, being -116A preferentially in cis conformation with the 539T variant (K) of exon 4 which was associated with lower BChE activity and lower body mass index (BMI) variance. Thi...

journal_title：Chemico-biological interactions

authors： Furtado-Alle L,Andrade FA,Nunes K,Mikami LR,Souza RL,Chautard-Freire-Maia EA

更新日期：2008-09-25 00:00:00