We aimed to synthesize the phenylhydrazone derivative of 4benzoyl-3-methyl-1-phenyl-5-pyrazolone which is a novel Schiff base. The ligand was synthesized in three stages. 3-methyl-1-phenyl-5-pyrazolone was synthesized as reported in the literature. (Ref. Vogel). This was benzoylated at the 4position to get 4benzoyl-3-methyl-1phenyl-5-pyrazolone (ref. Jesen’s procedure). This was condensed with ...

Amaranthus tricolor half-seedlings show a greater accumulation of betacyanin in response to a defined period of red light if given a pretreatment at an elevated temperature (40 C). Red light given before the shift to 40 C is ineffective. The maximum response is achieved after a 2-hour shift to 40 C and if the red light is given 1 hour after return to the germination temperature (25 C). The effe...

The photochemical properties of two basic easily synthesized isatin N(2)-phenylhydrazones were investigated. Contrary to the corresponding isatin N(2)-diphenylhydrazones, only Z-isomers were isolated from the reaction mixtures during the synthesis due to their stabilization by intramolecular hydrogen bonding. Although the presence of the C=N double bond creates conditions for the formation of a...

Ureidoglycolate is an intermediate in the degradation of the ureides, allantoin and allantoate, found in many organisms. In some leguminous plant species these compounds are used to transport recently fixed nitrogen in the root nodules to the aerial parts of the plant. In the present study, it was demonstrated that purified ureidoglycolases from chickpea (Cicer arietinum) and French bean (Phase...

The effects of mitochondrial uncoupling on the calcium homeostasis of prostatic cells were investigated using the prostatic cancer cell line LNCaP and indo-1 spectrofluorimetry. Carbonyl cyanide m-chloro-phenylhydrazone (CCCP) was used as uncoupler. Resting LNCaP cells responded to CCCP by a biphasic increase in [Ca2+]i. The first phase of increase which corresponded to the release of a mitocho...

The role of 3,5,3'-triiodo-l-thyronine (T3) and its metabolite 3,5-diiodo-l-thyronine (T2) in modulating the intracellular Ca(2+) concentration ([Ca(2+)](i)) and endogenous nitric oxide (NO) synthesis was evaluated in pituitary GH(3) cells in the absence or presence of extracellular Ca(2+). When applied in Ca(2+)-free solution, T2 and T3 increased [Ca(2+)](i), in a dose-dependent way, and NO le...

INTRODUCTION Because of its chemical diversity, the only way to standardise propolis is to specify multiple standards for different propolis types according to the corresponding chemical profile. So far, this has been done only for European propolis. OBJECTIVE To develop a rapid low-cost spectrophotometric procedure for quantification of bioactive prenylated flavanones in Taiwanese propolis. ...

Abstract Background Metabolic cell features are able to give reliable information on functional state. Thus, metabolic potential assessment of T cells in malignancy setting represents a promising area, especially adoptive therapy procedures. Easy set up and convenient Seahorse technology have recently been proposed by Agilent Technologies it could be used monitor potential. However, this method...

The potential for the oxidation of ethionine by a transaminative route was studied in an attempt to elucidate the pathways whereby the ethyl carbons of ethionine are converted to carbon dioxide. Ethionine is transaminated based on the recovery of a radioactive phenylhydrazone derivative. Carbon 1 of the ethyl portion of ethionine is recovered as carbon dioxide when L[ef/jy/-1-14C]ethionine is i...

TO THE EDITOR Mitochondrial uncoupling, an increased permeability of the inner membrane to protons not coupled to ATP synthesis, dissipates mitochondrial membrane potential. Mild mitochondrial uncoupling is believed to prolong lifespan of certain model organisms by reducing the production of reactive oxygen species (ROS) and preventing oxidant damage (Brand, 2000). Indeed, long-lived Caenorhabd...