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Biomedical subjects

S Baba

Publications and source records attributed to S Baba.

At least 937 records · Page 52Linked to original sources
PubMed1984

[Correlation between EEG and auditory brainstem response (ABR) in comatose patients--diagnosis of brain death by ABR].

ABRs and EEGs were recorded from fifty comatose patients. Among them 21 patients were in deep coma and remaining 29 were in brain death that was diagnosed from clinical criteria. All the patients who showed some activity in EEG had ABR which showed waves I through V. However, there was no correlation between grade of EEG classification, dominant alpha, theta, or delta rhythm, and the inter wave latencies between waves I through V in the ABRs. Eleven of the twenty-nine patients who were diagnosed as brain death from clinical criteria and isoelectric EEG showed waves I through V potentials in ABR. Eight of these eleven patients even exhibited normal or nearly normal ABRs which had I to V latencies less than 4.4 ms. However, all the patients who showed isoelectric EEG and no response ABR died. Thus it is concluded that the ABR should be included for identification of brain death in addition to the clinical examination and EEG recordings.

Brain Death↗
PubMed1984

[Study of immunosuppressive acidic protein (IAP) in patients with renal cell cancer].

We evaluated immunosuppressive acidic protein (IAP) as a tumor marker in renal cell cancer. The study was comprised of patients with renal cell cancer (6 stage A, 3 stage C, 11 stage D, 7 recurrences). The IAP positive rate of renal cell cancer was 84%, the mean was 937.5 +/- 442.1 ug/ml. The positive rate is statistically higher than in other malignant and benign urological diseases. The IAP positive rate tended to increase with cancer stage. IAP may represent a tumor marker in renal cell cancer.

Adenocarcinoma↗
PubMed1984

Identification and quantitative determination of fentanyl metabolites in patients by gas chromatography--mass spectrometry.

Although fentanyl has been used widely as a short-acting narcotic analgesic, its metabolism in humans has not been clarified. In this study, three fentanyl metabolites were identified in the urine of eight surgical patients receiving 0.3-0.5 mg of fentanyl intravenously. The metabolites 4-N-(N-propionylanilino)piperidine, 4-N-(N-hydroxypropionylanilino)piperidine and 1-(2-phenethyl)-4-N-(N-hydroxypropionylanilino)piperidine, and unchanged fentanyl were identified by GC-mass spectrometry in urine collected 6 h after administration. Fentanyl and its main metabolite, 4-N-(N-propionylanilino)piperidine, were determined quantitatively in the urine of five additional patients receiving 0.5 mg fentanyl intravenously. Urinary excretion of fentanyl and 4-N-(N-propionylanilino)-piperidine during the first 12 h after injection accounted for 0.3-4.0% and 26 to 55% of the dose, respectively.

Adult↗
PubMed1983

A highly sensitive determination of individual serum bile acids using high-performance liquid chromatography with immobilized enzyme.

We have developed a highly sensitive method for the simultaneous determination of individual bile acids in serum using high-performance liquid chromatography (HPLC) combined with immobilized 3 alpha-hydroxysteroid dehydrogenase. Both the HPLC column and the immobilized-enzyme column are suitable for use with alkaline solutions necessary in working with this enzyme system. With this method we were able to determine simultaneously fifteen different serum bile acids.

3-Hydroxysteroid Dehydrogenases↗
PubMed1983

[Experimental study on diabetes and pregnancy: with special reference to the effects of insulin treatment on fetuses of diabetic dams].

Through the development of treatment of diabetes mellitus, diabetic cases of pregnancy have been increasing, and the effects of maternal hyperglycemia and insulin-treated hypoglycemia on the growth and life of fetuses and newborns are becoming very important problems. However, it is difficult for us to investigate the fetuses of human diabetic mothers as experimental models. Although many reports deal with the development of newborns of diabetic mothers and about their secretory changes of insulin and C-peptide reactivity, there have been few reports concerning the effects of severe diabetes on pregnancy and the effects of insulin treatment on fetuses. Concerning experimental animals, there are also few reports about the effects of insulin treatment on diabetic pregnant animals. We conducted the present investigation to determine the effects of insulin treatment on the growth and metabolism of the fetuses of diabetic pregnant rats. Virgin female Wistar rats weighing 200 approximately 300 g were caged overnight with male rats. The mated females were isolated and the gestational age was calculated from noon of this day (zero). Seventeen of 24 pregnant rats received a rapid intravenous injection of 50 mg/kg body weight of streptozotocin (STZ) in 0.4 ml of 0.01 M citrate buffer (pH 4.5) immediately after blood samples were collected through the jugular vein under light ether anaesthesia on the 5th day of gestation. Seven pregnant rats were injected with only 0.4 ml of citrate buffer and served as the controls. These rats were divided into four groups, and each group was named as follows: Normal pregnant rats group (group I, n = 7), diabetic pregnant rats group (group II, n = 6) and insulin-treated diabetic pregnant rats group (group III: plasma glucose level 60 approximately 300 mg/dl, n = 6 and group IV: plasma glucose level below 60 mg/dl, n = 5). Group III and IV rats were treated with a subcutaneous injection of Lente Insulin (from 2 u. to 6 u.) every day from the 13th to the 19th day of gestation. Group II rats were injected with saline every day in the same way. Maternal blood samples were collected under light ether anaesthesia after feeding ad libitum on the 5th and 12th days of gestation. On the 20th day of gestation, the pregnant rats were anaesthetized by an intraperitoneal injection of sodium pentobarbital, and blood samples were collected in the manner stated above. Each fetus and placenta was taken out individually by hysterotomy.(ABSTRACT TRUNCATED AT 400 WORDS)

Animals↗