Results 221 to 230 of about 852,367 (264)

CHEMICAL ACTIVATORS OF SENSORY NEURONS

Annual Review of Physiology, 1997
▪ Abstract  Chemical activation of sensory neurons plays an important role in the somatosensory system. The actions of both endogenous mediators such as excitatory amino acids, acetylcholine, bradykinin, and ATP, as well as selective exogenous activators of nociceptive sensory neurons are reviewed.
J N, Wood, R, Docherty
openaire   +2 more sources

Chemical Activity of Cholesterol in Membranes

Biochemistry, 2000
Measurements are reported for the rate constants for the release of cholesterol (and dihydrocholesterol) to beta-cyclodextrin from mixtures with phospholipids in homogeneous monolayers at constant pressure at the air-water interface. In each mixture, it is found that the release rate shows a sharp decrease as the cholesterol concentration in the ...
A, Radhakrishnan, H M, McConnell
openaire   +2 more sources

Chemical Basis of Hashish Activity

Science, 1970
A sample of hashish was extracted consecutively with petroleum ether, benzene, and methanol. When tested intravenously in monkeys only the petroleum-ether fraction was active. This material was further fractionated. The only active compound isolated was Δ 1 -tetrahydrocannabinol.
R, Mechoulam, A, Shani, H, Edery, Y, Grunfeld   +3 more
openaire   +2 more sources

Oncogene Activation in Chemical Carcinogenesis

1988
Publisher Summary This chapter discusses the advances made in understanding the mechanisms of action of chemical carcinogens in the light of the recent evidence that oncogenes are directly implicated in the process of tumor development. It discusses various model systems used to address the question of cell transformation in vivo.
A, Balmain, K, Brown
openaire   +2 more sources

The Cataractogenic Activity Of Chemical Agents

CRC Critical Reviews in Toxicology, 1971
(1971). The Cataractogenic Activity Of Chemical Agents. CRC Critical Reviews in Toxicology: Vol. 1, No. 1, pp. 93-118.
Perry J. Gehring, Richard S. Smith
openaire   +2 more sources

Chemical expansion of cofactor activity

Nature Chemical Biology, 2006
Methylation is a key regulatory event in several biological processes. The enzymatic transfer by methyltransferases of extended carbon chain analogs of S-adenosylmethionine to DNA opens up new avenues for investigating biological methylation.
Andrew C, Mercer, Michael D, Burkart
openaire   +2 more sources

POLYMERISATION OF CHEMICALLY ACTIVATED MONOMERS

Russian Chemical Reviews, 1967
Abstract
openaire   +1 more source

Metabolism and activation of chemical carcinogens

Molecular and Cellular Biochemistry, 1980
A great deal of effort has gone into research on the mechanisms of action of chemical carcinogens. The action of the host on the carcinogen represents one approach--to determine what metabolic products may be involved. Study of the action of the carcinogen on the host requires a thorough comparison of changes wrought in cellular constituents by the ...
openaire   +2 more sources

The activation strain model of chemical reactivity

Organic & Biomolecular Chemistry, 2010
Herein, we provide an account of the activation strain model of chemical reactivity and its recent applications. In this model, the potential energy surface DeltaE(zeta) along the reaction coordinate zeta is decomposed into the strain DeltaE(strain)(zeta) of the increasingly deformed reactants plus the interaction DeltaE(int)(zeta) between these ...
van Zeist, W.J., Bickelhaupt, F.M.
openaire   +3 more sources

Chemically active colloidal superstructures

Nanoscale
This review explores the self-propulsion mechanisms of chemically driven colloidal motors, the principles of their chemical communication, and strategies for the directed assembly of active colloidal superstructures.
Yang Huang, Changcheng Ke, Celi Lou, Qiang He   +3 more
openaire   +2 more sources