A case of prolonged confusion after temporal lobe psychomotor status

A 36-year-old man with prolonged confusion developed after psychomotor status was reported. He had no past history of epileptic seizures or psychotic disorders. The status continued for 20 hours, and twilight state and a slight fever lasted for about 10 days. Thereafter gross impairment of memory and disorientation became remarkable, and, in addition, strong psychic and autonomic disturbances developed, such as visual and auditory hallucinations, excessive excitement, disturbance of sleep, polyphagia, polydypsia, polyuria and hyperhidrosis. The CT scan, carotide angiography, CSF examination, and complement fixation tests for viruses were all within normal limits. The EEGs showed a slowing of the background activity, 0.6--0.8 Hz periodic high voltage wave discharges and random spikes in each temporal area. The clinical symptoms and EEG findings gradually improved without remarkable damage.

Total one-stage repair of interrupted aortic arch associated with aortic septal defect and patent ductus arteriosus

Successful total repair in one stage was performed in a 3-year-old girl who had interrupted aortic arch associated with aortic septal defect and patent ductus arteriosus. Surface-induced deep hypothermia and interrupted perfusion were used. The results of postoperative catheterization and angiocardiographic studies are analyzed, and the literature and results of previous surgical attempts at correction are reviewed.

The purification and properties of D-allosephosphate isomerase of Aerobacter aerogenes

Aerobacter aerngenes produces an inducible D-allose 6-phosphate ketol isomerase that nonspecilically isomerizes ribose 5-phosphate. The isomerase was separated from other isomerases present in extracts of cells grown on D-allose by repeated precipitation with protamine. Eighty percent of the activity of the purified preparation was lost on storage at 0 °C for 48 hours. The enzyme was most active and most stable at pH 8.5 and most active at 40 °C. Cobalt, manganese, magnesium, and phosphate ions inhibited at 0.05 M. Mercuric chloride, p-chloromer-curiphenylsulfonate, and iodoacetate also inhibited the isomerase but this was prevented by the addition of cysteine or reduced glutathione. These thiols also reactivated the enzyme when activity was lost during dialysis. 6-Phosphoallonate was a strong inhibitor and to a lesser degree 6-phosphogluconate, 6-phosphoglucosamine, 5-phosphoribonate, and erythrose 4-phosphate. For allose 6-phosphate Kswas 1.2 × 10−3 M and for ribose 5-phosphate, 4.5 × 10−3 M.

The ribosephosphate and glucosephosphate isomerases of Aerobacter aerogenes

The ribosephosphate isomerase and glucosephosphate isomerase present in extracts from cells of Aerobacter aerogenes grown on D-glucose were separated by chromatography on TEAE-cellulose and partially purified by absorption on and elution from alumina Cγ gel. The ribosephosphate isomerase was most active at 30 °C, pH 8.5, and most stable at pH 7.5 whereas the glucosephosphate isomerase was most active at 45 °C and most active and stable at pH 8.0. The ribosephosphate isomerase was highly specific for D-ribose 5-phosphate. The preparation of glucosephosphate isomerase attacked D-glucose 6-phosphate (100%) and had some (3–7%) activity on D-mannose and D-galactose 6-phosphates but did not attack D-ribose, or D-allose phosphates. For ribosephosphate isomerase, Km = 1.8 × 10−3MD-ribose 5-phosphate and for glucosephosphate isomerase Km = 0.36 × 10−3 MD-glucose 6-phosphate. Both isomerases were sensitive to heavy metals and sulfhydryl reagents but could be protected with cysteine. 6-Phosphogluconate, 5-phosphoribonate, and D-erythrose 4-phosphate were potent inhibitors of glucosephosphate isomerase and 5-phosphoribonate of ribosephosphate isomerase. Cobalt, manganese, and to a lesser extent, magnesium and phosphate ions inhibited the isomerases.