BACKGROUND In general, organic solvents are inhibiting many physiological enzymes and alter the behavioural functions, but the available scientific knowledge on laboratory solvent induced organ specific toxins are very limited. Hence, the present study was planned to determine the sub-chronic toxic effects of petroleum ether (boiling point 40-60°C), a laboratory solvent in Sprague-Dawley (SD) r...

A bacterial strain, Pseudomonas sp. POB 310, was enriched with 4-carboxy biphenyl ether as sole source of carbon and energy. Resting cells of POB 310 co-oxidize a substrate analogue, 4-carboxybenzophenone, yielding 1,2-dihydro-1,2-dihydroxy-4-carboxy-benzophenone. The ether bond of 3- and 4-carboxy biphenyl ether is cleaved analogously by initial 1,2-dioxygenation, yielding a hemiacetal which i...

Two new flavonolignan glycosides, tricin-4'-O-(threo-β-guaiacylglyceryl) ether 7''-O-β-D-glucopyranose (4) and tricin-4'-O-(erythro-β-guaiacylglyceryl) ether 7''-O-β-D-glucopyranose (5) were isolated from the roots of Zizania latifolia, together with tricin-7-O-β-D-glucopyranose (1), tricin-4'-O-(threo-β-guaiacylglyceryl) ether 7-O-β-D-glucopyranose (2), and tricin-4'-O-(erythro-β-guaiacylglyce...

Rapid induction of ether anesthesia is desirable for the reason that the prolongation of the subanesthetic stages is detrimental to the subject. In order to induce rapid anesthesia it is the practice to administer a concentration of ether vapor much higher than that necessary to maintain fully developed anesthesia. This procedure requires skill upon the part of the anesthesist; it also results ...

Glyceryl ether monooxygenase is a tetrahydrobiopterin-dependent membrane-bound enzyme which catalyses the cleavage of lipid ethers into glycerol and the corresponding aldehyde. Despite many different characterisation and purification attempts, so far no gene and primary sequence have been assigned to this enzyme. The seven other tetrahydrobiopterin-dependent enzymes can be divided in the family...

Rose (Rosa hybrida) flowers produce and emit a diverse array of volatiles, characteristic to their unique scent. One of the most prominent compounds in the floral volatiles of many rose varieties is the methoxylated phenolic derivative 3,5-dimethoxytoluene (orcinol dimethyl ether). Cell-free extracts derived from developing rose petals displayed O-methyltransferase (OMT) activities toward sever...

The spontaneous electrical activities and alterations of the activation threshold of the neo-, palaeoand archicortical systems were investigated during nitrous oxide and ether anaesthesia. In the neocortical system the threshold for hypothalamic stimulation, induced spindle bursts, recruiting response and thalamic arousal reaction were also examined. The results obtained were as follows: (a) Ni...

Poly(ether ether ketone) (PEEK) is a high-performance thermoplastic with distinctive combination of corrosion resistance, thermo-oxidative stability and outstanding physical mechanical properties at high temperatures. A pertinent step forward in the development this has been inclusion electrically conductive fillers to expand its functionality. In review an overview research on PEEK composites ...

The synthesis and cation-binding properties of a series of Calixarene derivatives possessing alkyl chain groups, ester groups and crown ether rings have been investigated. The syntheses of Calix[4]arene crown ethers and Calix[6]arene derivatives possessing alkyl chain, ester group and crown ether ring have been described. In order to evaluate their monovalent cation binding abilities, solvent e...

MURA. Efect of ether anesthesia on r7-hydroxycur~icosteroid secretion in dogs. Am. J. Physiol. rg7(6): 1261-1262. rg5g.--In dogs with previously cut dorsal spinal roots (T1r-L3), adrenal venous blood was collected without anesthetic or pain. Ether was then inhaled for 30-60 minutes. During and after ether inhalation, adrenal venous blood was again collected and the plasma was analyzed for I 7-h...