Favorable Pendant-Amino Metal Chelation in VX Nerve Agent Model Systems

2006 ◽  
Vol 110 (10) ◽  
pp. 3655-3661 ◽  
Author(s):  
Indrajit Bandyopadhyay ◽  
Min Jeong Kim ◽  
Yoon Sup Lee ◽  
David G. Churchill
Keyword(s):  
Nerve Agent ◽  
Model Systems ◽  
Metal Chelation ◽  
Agent Model

A study of nerve agent model organophosphonate binding with manganese-A2B-corrole and -A2B2-porphyrin systems

Polyhedron ◽  
2009 ◽  
Vol 28 (12) ◽  
pp. 2418-2430 ◽  
Author(s):  
Kibong Kim ◽  
Inkoo Kim ◽  
Nilkamal Maiti ◽  
Seong Jung Kwon ◽  
Daniela Bucella ◽  
...  
Keyword(s):  
Nerve Agent ◽  
Agent Model

scholarly journals Chemical Synthesis of Two Series of Nerve Agent Model Compounds and Their Stereoselective Interaction with Human Acetylcholinesterase and Human Butyrylcholinesterase

2009 ◽  
Vol 22 (10) ◽  
pp. 1669-1679 ◽  
Author(s):  
Nora H. Barakat ◽  
Xueying Zheng ◽  
Cynthia B. Gilley ◽  
Mary MacDonald ◽  
Karl Okolotowicz ◽  
...  
Keyword(s):  
Chemical Synthesis ◽  
Nerve Agent ◽  
Model Compounds ◽  
Agent Model ◽  
Human Butyrylcholinesterase

scholarly journals Direct detection of the hydrolysis of nerve agent model compounds using a fluorescent probe

2010 ◽  
Vol 187 (1-3) ◽  
pp. 330-334 ◽  
Author(s):  
Xueying Zheng ◽  
Karl Okolotowicz ◽  
Beilin Wang ◽  
Mary MacDonald ◽  
John R. Cashman ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Direct Detection ◽  
Nerve Agent ◽  
Model Compounds ◽  
Agent Model ◽  
Hydrolysis Of

scholarly journals Neuroprotective effects of a catalytic antioxidant in a rat nerve agent model

Redox Biology ◽  
2019 ◽  
Vol 20 ◽  
pp. 275-284 ◽  
Author(s):  
Li-Ping Liang ◽  
Jennifer N. Pearson-Smith ◽  
Jie Huang ◽  
Brian J. Day ◽  
Manisha Patel
Keyword(s):  
Nerve Agent ◽  
Neuroprotective Effects ◽  
Agent Model ◽  
Rat Nerve ◽  
Catalytic Antioxidant

Nuclear coiled bodies and the nucleolus

1994 ◽  
Vol 52 ◽  
pp. 20-21
Author(s):  
K. Brasch ◽  
J. Williams ◽  
D. Gallo ◽  
T. Lee ◽  
R. L. Ochs
Keyword(s):  
Mouse Liver ◽  
Nuclear Body ◽  
Nuclear Bodies ◽  
Model Systems ◽  
Coiled Body ◽  
Rrna Processing ◽  
Malignant Cells ◽  
Sm Proteins ◽  
Coiled Bodies ◽  
Unique Protein

Though first described in 1903 by Ramon-y-Cajal as silver-staining “accessory bodies” to nucleoli, nuclear bodies were subsequently rediscovered by electron microscopy about 30 years ago. Nuclear bodies are ubiquitous, but seem most abundant in hyperactive and malignant cells. The best studied type of nuclear body is the coiled body (CB), so termed due to characteristic morphology and content of a unique protein, p80-coilin (Fig.1). While no specific functions have as yet been assigned to CBs, they contain spliceosome snRNAs and proteins, and also the nucleolar protein fibrillarin. In addition, there is mounting evidence that CBs arise from or are generated near the nucleolus and then migrate into the nucleoplasm. This suggests that as yet undefined links may exist, between nucleolar pre-rRNA processing events and the spliceosome-associated Sm proteins in CBs.We are examining CB and nucleolar changes in three diverse model systems: (1) estrogen stimulated chick liver, (2) normal and neoplastic cells, and (3) polyploid mouse liver.

Microtubule Dynamics and Organelle Transport in Reticulomyxa

1990 ◽  
Vol 48 (3) ◽  
pp. 194-195
Author(s):  
Yih-Tai Chen ◽  
Ursula Euteneuer ◽  
Ken B. Johnson ◽  
Michael P. Koonce ◽  
Manfred Schliwa
Keyword(s):  
Plasma Membrane ◽  
Light Microscopy ◽  
Cytoplasmic Dynein ◽  
Living Cells ◽  
Microtubule Dynamics ◽  
Model Systems ◽  
Organelle Transport ◽  
Biochemical Characteristics ◽  
Dependent Transport

The application of video techniques to light microscopy and the development of motility assays in reactivated or reconstituted model systems rapidly advanced our understanding of the mechanism of organelle transport and microtubule dynamics in living cells. Two microtubule-based motors have been identified that are good candidates for motors that drive organelle transport: kinesin, a plus end-directed motor, and cytoplasmic dynein, which is minus end-directed. However, the evidence that they do in fact function as organelle motors is still indirect.We are studying microtubule-dependent transport and dynamics in the giant amoeba, Reticulomyxa. This cell extends filamentous strands backed by an extensive array of microtubules along which organelles move bidirectionally at up to 20 μm/sec (Fig. 1). Following removal of the plasma membrane with a mild detergent, organelle transport can be reactivated by the addition of ATP (1). The physiological, pharmacological and biochemical characteristics show the motor to be a cytoplasmic form of dynein (2).

Microstructural observations of the “Wustite-Spinel” coexistence following quenching of cation-excess spinels, Ni2(1+x)Ti1-xO4

1990 ◽  
Vol 48 (4) ◽  
pp. 1058-1059
Author(s):  
Ian M. Anderson ◽  
Arnulf Muan ◽  
C. Barry Carter
Keyword(s):  
Film Growth ◽  
Spinel Phase ◽  
Model Systems ◽  
Ion Milling ◽  
Coexistence Of Phases ◽  
Nonequilibrium Conditions ◽  
Diffraction Patterns ◽  
Spinel Structures ◽  
Highly Porous ◽  
Standard Techniques

Oxide mixtures which feature a coexistence of phases with the wüstite and spinel structures are considered model systems for the study of solid-state reaction kinetics, phase boundaries, and thin-film growth, and such systems are especially suited to TEM studies. (In this paper, the terms “wüstite” and “spinel” will refer to phases of those structure types.) The study of wüstite-spinel coexistence has been limited mostly to systems near their equilibrium condition, where the assumptions of local thermodynamic equilibrium are valid. The cation-excess spinels of the type Ni2(1+x)Ti1-xO4, which reportedly exist only above 1375°C4, provide an excellent system for the study of wüstite-spinel coexistence under highly nonequilibrium conditions. The nature of these compounds has been debated in the literature. X-ray and neutron powder diffraction patterns have been used to advocate the existence of a single-phase, non- stoichiometric spinel. TEM studies of the microstructure have been used to suggest equilibrium coexistence of a stoichiometric spinel, Ni2TiO4, and a wüstite phase; this latter study has shown a coexistence of wüstite and spinel phases in specimens thought to have been composed of a single, non- stoichiometric spinel phase. The microstructure and nature of this phase coexistence is the focus of this study. Specimens were prepared by ball-milling a mixture of NiO and TiO2 powders with 10 wt.% TiO2. The mixture was fired in air at 1483°C for 5 days, and then quenched to room temperature. The aggregate thus produced was highly porous, and needed to be infiltrated prior to TEM sample preparation, which was performed using the standard techniques of lapping, dimpling, and ion milling.

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