metabolic acidosis and severe hypotension are the main causes of irreversibility during hemorrhagic shock. the influence of these two factors on durations of shock period and survival time were studied in four groups of anesthetized cats. in group i the animals were made hypotensive by reducing mean arterial blood pressure (pa) to 45 mmhg with concurrent metabolic acidosis. [n group ii the same...

In the preceding paper (I), evidence concerning the proof of structure of 2-keto-3-deoxyheptonic acid was presented and it was indicated that this compound is a major product of ribose 5-phosphate metabolism in extracts of Escherichia coli strain B. This report is concerned with the enzymic synthesis of 2-keto-3deosyheptonic acid in extracts of Escherichia coli strain B and is the first direct ...

Rat liver glutamine transaminase acts on y-glutamyl hydrazones of a-keto acids to yield the corresponding L-amino acids and 3-hydroxy-tetrahydro-6-pyridazinone-3-carboxyllc acid; the latter compound undergoes nonenzymatic dehydration in acid to yield 1,4,5,6-tetrahydro-6-pyridazinone -3carboxylic acid. L-Amino acid oxidase (snake venom) also catalyzes the formation of 3-hydroxy-tetrahydro-6-pyr...

The oxidation of a stoichiometric diethyl ether-oxygen-nitrogen mixture containing 5000 ppm fuel was studied in jet-stirred reactor at 10 atm and residence times 1 s. Experimental temperatures varied stepwise for 440 to 740 K products were quantified by gas chromatography with TCD FID, chromatography-mass spectrometry, FTIR. Other experiments the temperature range 480 570 performed characterizi...

  Distal renal tubular acidosis is a syndrome of abnormal urine acidification and is characterized by hyperchloremic metabolic acidosis, hypokalemia, hypercalciurea, nephrocalcinosis and nephrolithiasis. Despite the presence of persistent hypokalemia, acute muscular paralysis is rarely encountered in males.Here, we will report an eighteen year old male patient who presented with flaccid quadrip...

palladium (ii) coordination complexes catalyze the reaction of alcohols with ketones to yield ethers. during the catalytic cycle, the alcohol adds selectively to the β-carbon (anti-markovnikov). in this work, mechanism and kinetics for the reaction of methanol with methyl vinyl ketone (mvk), being catalyzed by pd, has been theoretically investigated in detail. using quantum mechanical approach,...

Extensive ab initio surface-hopping dynamics simulations have been used to explore the excited-state nonadiabatic decay of two biologically relevant hypoxanthine keto-N7H and keto-N9H tautomers in aqueous solution. QM/MM calculations and QM/MM-based MD simulations predict different hydrogen bonding networks around these nucleobase analogues, which influence their photodynamical properties remar...

Metabolic acidosis and severe hypotension are the main causes of irreversibility during hemorrhagic shock. The influence of these two factors on durations of shock period and survival time were studied in four groups of anesthetized cats. In group I the animals were made hypotensive by reducing mean arterial blood pressure (Pa) to 45 mmHg with concurrent metabolic acidosis. [n group II the ...

Objective(s)Cardiovascular disease causes a major clinical problem in patients with end stage renal disease. Since metabolic acidosis is very common in patients with end stage renal disease, we aimed to investigate the effect of experimentally-induced metabolic acidosis on serum lipid profile and aortic fatty streak (FS) formation in normal and high-cholesterol fed rabbits.Materials and Methods...

BACKGROUND The D-galacturonic acid derived from plant pectin can be converted into a variety of other chemicals which have potential use as chelators, clarifiers, preservatives and plastic precursors. Among these is the deoxy-keto acid derived from L-galactonic acid, keto-deoxy-L-galactonic acid or 3-deoxy-L-threo-hex-2-ulosonic acid. The keto-deoxy sugars have been found to be useful precursor...