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F A Verhoeven et al.
The Journal of endocrinology, 173(2), 247-255 (2002-05-16)
Cellular and nuclear uptake of [125I]tri-iodothyronine (T3) and [125I]triiodothyroacetic acid (Triac) were compared in cardiomyocytes of 2-3 day old rats, and the effect of thyroid hormone analogs on cellular T(3) uptake was measured. Cells (5-10 x 10(5) per well) were
S Basu et al.
Life sciences, 76(26), 3081-3088 (2005-04-27)
The effect of various fractions of black tea [(Camellia Sinensis) (L) O. Kuntze (Theaceae)] on the function of mammalian skeletomotor apparatus was studied. The theaflavin fraction (Tfs) produced a concentration- dependent facilitation of indirect twitch responses of the rat phrenic
Maximilian Tischer et al.
Bioorganic & medicinal chemistry, 18(9), 2998-3003 (2010-04-13)
The bisquaternary bisnaphthalimides are a versatile class of compounds being active against the malaria parasite Plasmodium falciparum in the lower nanomolar range of concentration combined with no cytotoxicity. The series of compounds is designed as choline analogues and interfering agents
Karen A Roddy et al.
PloS one, 6(2), e17526-e17526 (2011-03-10)
Very little is known about the regulation of morphogenesis in synovial joints. Mechanical forces generated from muscle contractions are required for normal development of several aspects of normal skeletogenesis. Here we show that biophysical stimuli generated by muscle contractions impact
Choong-Hwan Lee et al.
The Journal of biological chemistry, 281(6), 3463-3472 (2005-12-07)
alpha-Synuclein is the major constituent of Lewy bodies, a pathological signature of Parkinson disease, found in the degenerating dopaminergic neurons of the substantia nigra pars compacta. Amyloidosis generating the insoluble fibrillar protein deposition has been considered to be responsible for
Andrew A Pitsillides
Journal of anatomy, 208(4), 417-431 (2006-04-28)
It has long been appreciated that studying the embryonic chick in ovo provides a variety of advantages, including the potential to control the embryo's environment and its movement independently of maternal influences. This allowed early workers to identify movement as
Naomi L Kruhlak et al.
Toxicology mechanisms and methods, 18(2-3), 217-227 (2008-01-01)
ABSTRACT Drug-induced phospholipidosis (PL) is a condition characterized by the accumulation of phospholipids and drug in lysosomes, and is found in a variety of tissue types. PL is frequently manifested in preclinical studies and may delay or prevent the development
Silvia Olivera-Bravo et al.
British journal of pharmacology, 151(8), 1280-1292 (2007-06-19)
This work was aimed at comparing and analysing the effects and mechanisms of action of the quaternary ammonium cholinesterase inhibitors (QChEIs) BW284c51, decamethonium and edrophonium, on nicotinic ACh receptor (nAChR) function. nAChRs purified from Torpedo electroplax were transplanted to oocytes
Niamh C Nowlan et al.
Journal of orthopaedic research : official publication of the Orthopaedic Research Society, 32(6), 777-785 (2014-03-05)
We have almost no understanding of how our joints take on their range of distinctive shapes, despite the clinical relevance of joint morphogenesis to postnatal skeletal malformations such as developmental dysplasia of the hip (DDH). In this study, we investigate
C Bartolucci et al.
Biochemistry, 38(18), 5714-5719 (1999-05-08)
The crystal structure of Torpedo californica (Tc) acetylcholinesterase (AChE) carbamoylated by the physostigmine analogue 8-(cis-2,6-dimethylmorpholino)octylcarbamoyleseroline (MF268) is reported at 2.7 A resolution. In the X-ray structure, the dimethylmorpholinooctylcarbamic moiety of MF268 is covalently bound to the catalytic serine, which is
Shaogang Chu et al.
Journal of chromatography. A, 1218(44), 8083-8088 (2011-09-29)
Several organophosphate triesters are widely used as flame retardants and can be metabolized to dibutyl (DBP), diphenyl (DPhP), di(2-ethylhexyl) (DEHP) and di(1,3-dichloro-2-propyl) (or bis(1,3-dichloro-2-propyl); DDCPP) phosphoric acid, respectively. A highly sensitive liquid chromatography-electrospray ionization(+)-triple quadrupole mass spectrometry (LC-ESI(+)-QQQ-MS/MS) based analysis
Raul Garrido-Medina et al.
Electrophoresis, 32(15), 2036-2043 (2011-07-06)
Prostate-specific antigen (PSA) is the usual biomarker for prostate cancer (PCa). However, its lack of selectivity has lead to the search for new biomarkers. PSA glycosylation seems to depend on the pathophysiological conditions of the individual. Thus, methods to separate
Borjana Mikic et al.
Annals of biomedical engineering, 32(1), 18-25 (2004-02-18)
The mechanical behavior of cartilage is intimately related to its biochemical composition, and tissue composition is known to be influenced by its local mechanical loading environment. Although this phenomenon has been well-studied in adult cartilage, few investigations have examined such
C Lee et al.
British journal of anaesthesia, 88(5), 692-699 (2002-06-18)
Of the polymethylene bismethonium congeners (C5-C12 and C18), decamethonium (C10) is the most potent neuromuscular blocking agent. We tested the hypothesis that these congeners act as straight molecules and will not bend easily in spite of the flexible connecting chain
Phedias Diamandis et al.
Nature chemical biology, 3(5), 268-273 (2007-04-10)
The identification of self-renewing and multipotent neural stem cells (NSCs) in the mammalian brain holds promise for the treatment of neurological diseases and has yielded new insight into brain cancer. However, the complete repertoire of signaling pathways that governs the
Mesenchymal and mechanical mechanisms of secondary cartilage induction
Solem R C, et al.
Developmental Biology, 356(1), 28-39 (2011)
Amina S Woods et al.
Journal of proteome research, 7(8), 3423-3427 (2008-06-27)
We have previously used MALDI mass spectrometry to highlight ammonium- or guanidinium-aromatic interactions via cation-pi bonding and ammonium- or guanidinium-phosphate interactions through salt bridge formation. In the present work, the gas-phase stability and dissociation pathways of the interaction between phosphorylated
V A Pashynskaya et al.
Rapid communications in mass spectrometry : RCM, 16(18), 1706-1713 (2002-09-11)
Mechanisms of interaction between the antimicrobial drugs decamethoxinum and aethonium, which are based on bisquaternary ammonium compounds, and a phospholipid component of biological membranes, dipalmitoylphosphatidylcholine, were studied by means of liquid secondary ion mass spectrometry (LSIMS) and differential scanning calorimetry
Jing Yuan et al.
Nature chemical biology, 5(10), 765-771 (2009-09-08)
Studies of gene function and molecular mechanisms in Plasmodium falciparum are hampered by difficulties in characterizing and measuring phenotypic differences between individual parasites. We screened seven parasite lines for differences in responses to 1,279 bioactive chemicals. Hundreds of compounds were
Raymond Macharia et al.
Anatomy and embryology, 208(1), 75-85 (2004-03-05)
This study determined the effect of decamethonium bromide (DMBr), a non-competitive blocker of the neuromuscular junction, on skeletal muscle development during chick embryogenesis. Decamethonium bromide caused generalized edema and high mortality with treated embryos rarely surviving beyond day 16 of
I Wenningmann et al.
Molecular pharmacology, 60(3), 584-594 (2001-08-15)
We performed macroscopic and single-channel current measurements on wild-type (WT) and two mutant muscle-type nicotinic acetylcholine (ACh) receptor channels transiently expressed in HEK-293 cells. The mutants contained polar-to-nonpolar substitutions at the 10' (alpha(2)S10'A beta T10'A gamma delta) and 6' positions
Dana B Finley et al.
Journal of pharmacological and toxicological methods, 59(2), 108-119 (2009-04-16)
Exposure to irreversible cholinesterase (ChE)-inhibiting compounds, such as organophosphates may produce neuromuscular dysfunction. However, less is known about changes in neuromuscular transmission after treatment with reversible ChE-inhibitors. These studies adapted single fiber electromyography (SFEMG) techniques to quantify neuromuscular jitter in
Chigusa Sawamura et al.
Magnetic resonance in medicine, 56(6), 1235-1241 (2006-11-08)
To examine the effect of immobilization on the development of articular cartilage, we assessed glycosaminoglycan (GAG) content in the chick articular surface by delayed gadolinium-enhanced MRI of cartilage (dGEMRIC). Chick embryos were paralyzed by decamethonium bromide (DMB) from day 10
J A Germiller et al.
Journal of pediatric orthopedics, 18(3), 314-318 (1998-05-26)
Clubfoot is a birth defect that may be related to muscle weakness or imbalance. The purpose of this study was to examine the relationships among muscle and tendon size and embryonic motility in a paralyzed chick embryo model of clubfoot
Roger L Papke et al.
The Journal of pharmacology and experimental therapeutics, 333(2), 501-518 (2010-01-27)
Transgenic mouse models with nicotinic acetylcholine receptor (nAChR) knockouts and knockins have provided important insights into the molecular substrates of addiction and disease. However, most studies of heterologously expressed neuronal nAChR have used clones obtained from other species, usually human
T Alexeev et al.
European journal of biochemistry, 259(1-2), 310-319 (1999-01-23)
The nicotinic acetylcholine receptor (AChR) from the electric organ of Torpedo species is an oligomeric protein composed of alpha2 beta gamma delta subunits. Although much is known about its tertiary and quaternary structure, the conformation of the large extracellular domains
Clarissa K L Ng et al.
Journal of medicinal chemistry, 49(2), 811-816 (2006-01-20)
A series of bisquaternary ammonium salts with a 12-carbon spacer between the positive charges were synthesized, and their antifungal activity has been investigated. Compounds with butyl, pentyl, and isopentyl headgroups were the most potent antifungal agents with MICs in the
L N Lisetski et al.
European biophysics journal : EBJ, 31(7), 554-558 (2003-02-27)
We have studied the action of some membranotropic agents (MTAs) on the parameters of mono- and multilayers of dipalmitoylphosphatidylcholine (DPPC). The MTAs used included an antimicrobial drug, decamethoxinum, the model amphiphilic agent stearoyl-L-alpha-alanine, and cholesterol as a reference substance. Using
D Bertrand et al.
Proceedings of the National Academy of Sciences of the United States of America, 87(5), 1993-1997 (1990-03-01)
Neuronal nicotinic acetylcholine receptor of the alpha 4/non-alpha (alpha 4/n alpha) type was reconstituted in Xenopus oocytes after nuclear injection of cDNA expression vectors. Functional neuronal receptor was only formed when the two subunits alpha 4 and n alpha were
Mark P Beenhakker et al.
Journal of neurophysiology, 91(1), 78-91 (2003-10-03)
Sensory neurons enable neural circuits to generate behaviors appropriate for the current environmental situation. Here, we characterize the actions of a population (about 60) of bilaterally symmetric bipolar neurons identified within the inner wall of the cardiac gutter, a foregut
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