10 resultados
1. Thiazolidine derivatives (TD), the products of condensation of L-cysteine (cys) with sugars (D-glucose, D-xylose, D-arabinose, D-galactose, and D-mannose), successfully elevated nonprotein sulfhydryl (NPSH) levels in livers of Ehrlich ascites tumor (EAT)-bearing mice. 2. At the same time, TD
Older individuals are more susceptible to infectious agents than younger and this is related to the disrepair of the immune defence mechanisms associated with aging. In this study we evaluated the activity of a new biological response modifier (BRM), pidotimod
Thiazolidine-4-carboxylic acid (TC) is a cyclic sulfur amino acid, a condensation product of cysteine and formaldehyde. The chemistry, biological effects and clinical use of TC are reviewed. Extensive animal experiments and studies on human subjects carried out in Europe indicate that a combination
Thiazolidine derivatives (TD), prodrugs of L-cysteine (cys), synthesized by the condensation of cys with formaldehyde (thiazolidine-4-carboxylic acid-CF), acetaldehyde (2-methyl-thiazolidine-4-carboxylic acid-CA) and pyruvate (2-methylthiazolidine-2,4-dicarboxylic acid-CP), as well as amino acids
To quantitate endogenous nitrosation reactions in man, the quantity of N-nitrosoproline (NPRO) excreted in the urine after ingestion of proline and/or nitrate was estimated. When this monitoring method (NPRO test) was applied in clinical and field studies, several hitherto unidentified N-nitroso
BACKGROUND
Helicobacter-induced atrophic gastritis with a hypochlorhydric milieu is a risk factor for gastric cancer. Microbes colonising acid-free stomach oxidise ethanol to acetaldehyde, a recognised group 1 carcinogen.
OBJECTIVE
To assess gastric production of acetaldehyde and its inert
This work deals with the effect of thiazolidine-4-carboxylic acid (thioproline) upon several in vitro established human cell lines. Times-lapse microcinematography is used to study the action of thioproline on HeLa cells, employing high doses during a short time, and continuous exposure to medium
The N,N-di(2-chlorethyl)hydrazides of the following alpha-aminocarboxylic acid antimetabolites: methioninsulphoxide, ethionine, 2-, 3- and 4-fluorophenylalanine, 4-nitrophenylalanine and 2,2-dimethyl-thiazolidine-4-carboxylic acid were synthesized. Preliminary studies of the activity on experimental
Five peptide fragments, based on the C-terminal sequence of bombesin (BN)-(6-14) or BN-(7-14), were selected as carriers for radicals doxorubicin (DOX) and 2-pyrrolino-DOX to create hybrid cytotoxic analogs. All these compounds had a reduced peptide bond (CH2-NH or CH2-N) between positions 13 (Phe
We have previously described 2-aryl-thiazolidine-4-carboxylic acid amides as a novel class of antiproliferative agents for prostate cancer. Screening these compounds with melanoma cell lines revealed that several of them have potent antiproliferative activity and selectivity against melanoma. To