Results 201 to 210 of about 1,624,448 (258)
The Association of Amyloid‐β and Tau With Synaptic Dysfunction in Alzheimer's Disease
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective To clarify the relative contributions of amyloid and tau to synaptic dysfunction in Alzheimer's disease (AD). Methods We included 109 cognitively unimpaired and impaired individuals from the Geneva Memory Center with available CSF synaptic biomarkers (neurogranin, SNAP‐25, GAP‐43). Participants were stratified according to amyloid (A)
Fausto Roveta +11 more
wiley +1 more source
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Background Biallelic FIG4 variants classically cause distinct conditions characterized by peripheral neuropathy (Charcot‐Marie‐Tooth disease type 4J) or skeletal dysplasia (Yunis‐Varón syndrome). However, central nervous system involvement is increasingly recognized. The prevalence and specific characteristics of movement disorders within FIG4‐
Andrea Gangfuß +22 more
wiley +1 more source
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Chem. Commun., 2008
Enzyme assays are analytical tools to visualize enzyme activities. In recent years a large variety of enzyme assays have been developed to assist the discovery and optimization of industrial enzymes, in particular for "white biotechnology" where selective enzymes are used with great success for economically viable, mild and environmentally benign ...
Reymond, Jean-Louis +2 more
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Enzyme assays are analytical tools to visualize enzyme activities. In recent years a large variety of enzyme assays have been developed to assist the discovery and optimization of industrial enzymes, in particular for "white biotechnology" where selective enzymes are used with great success for economically viable, mild and environmentally benign ...
Reymond, Jean-Louis +2 more
openaire +4 more sources
Talanta, 1987
The effects of various classes of organic compounds and of metal ions on the catalytic activity of horseradish peroxidase in hydrogen peroxide-catalysed o-dianisidine oxidation and, on the activity of alkaline phosphatase in p-nitrophenyl phosphate hydrolysis have been studied.
I F, Dolmanova +2 more
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The effects of various classes of organic compounds and of metal ions on the catalytic activity of horseradish peroxidase in hydrogen peroxide-catalysed o-dianisidine oxidation and, on the activity of alkaline phosphatase in p-nitrophenyl phosphate hydrolysis have been studied.
I F, Dolmanova +2 more
openaire +2 more sources
An enzyme assay for acetylcholine
Biochemical Pharmacology, 1969Abstract A specific and sensitive enzymatic assay for acetylcholine has been developed. The acetylcholine was isolated from tissue extracts by electrophoresis, hydrolyzed to choline, and reacetylated by the transfer of the acetyl- 14 C group of acetyl- 14 C-coenzyme A to the choline molecule by the enzyme, choline acetyltransferase.
M E, Feigenson, J K, Saelens
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1992
Abstract Enzyme assays are among the most frequently performed procedures in biochemistry and are routinely used to estimate the amount of enzyme present in a cell or tissue, to follow the purification of an enzyme, or to determine the kinetic parameters of a system. The range of techniques used to measure the rate of an enzyme-catalysed
TSUJI AKIO +2 more
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Abstract Enzyme assays are among the most frequently performed procedures in biochemistry and are routinely used to estimate the amount of enzyme present in a cell or tissue, to follow the purification of an enzyme, or to determine the kinetic parameters of a system. The range of techniques used to measure the rate of an enzyme-catalysed
TSUJI AKIO +2 more
openaire +4 more sources
Current Opinion in Biotechnology, 1991
The past year or so has seen the development of new enzyme assays, as well as the improvement of existing ones. Assays are becoming more rapid and sensitive as a result of modifications such as amplification of the enzyme product(s). Recombinant DNA technology is now being recognized as a particularly useful tool in the search for improved assay ...
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The past year or so has seen the development of new enzyme assays, as well as the improvement of existing ones. Assays are becoming more rapid and sensitive as a result of modifications such as amplification of the enzyme product(s). Recombinant DNA technology is now being recognized as a particularly useful tool in the search for improved assay ...
openaire +2 more sources
Enzyme‐Linked Immunosorbent Assays
Current Protocols in Immunology, 1992AbstractThis unit describes six different ELISA systems for the detection of specific antibodies, soluble antigens, or cell‐surface antigens. In all six systems, soluble reactants are removed from solution after specifically binding to solid‐phase reactants.
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2003
Reporter genes code for proteins that have a unique enzymatic activity and are used to assess the transcriptional properties of DNA elements. The use of reporter genes in transgenic animals provides a rapid method for the detection of transgene expression, which is easily distinguishable from expression of the corresponding endogenous gene of the ...
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Reporter genes code for proteins that have a unique enzymatic activity and are used to assess the transcriptional properties of DNA elements. The use of reporter genes in transgenic animals provides a rapid method for the detection of transgene expression, which is easily distinguishable from expression of the corresponding endogenous gene of the ...
openaire +2 more sources
HORMONE AND ENZYME ASSAYS IN PREGNANCY
Acta Endocrinologica, 1974ABSTRACT The cystine-aminopeptidase (CAP)1) activity of placental origin (P-CAP) and of tissue origin (T-CAP) has been investigated in plasma from non-pregnant women, during normal pregnancy, in pregnancies complicated with severe pre-eclampsia and in plasma from the umbilical cord.
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