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Biomedical subjects

Y Orita

Publications and source records attributed to Y Orita.

At least 217 records · Page 12Linked to original sources
PubMed1977

Laser photolysis and fluorescence studies on pyrene-thiazide and pyrene-diazoxide systems.

The laser photolysis studies on pyrene, pyrene-thiazides and pyrene-diazoxide systems in acetonitrile revealed that thiazides and diazoxide can scavenge the photoejected electron. It was found that the pyrene fluorescence is quenched by the present diuretics and related compounds and both static and dynamic quenching constants were obtained. Thiazides quench the fluorescence through both static and dynamic mechanism, while the small static quenching constant and no lifetime shortening of pyrene were observed in the case of diazoxide quencher. This difference may correspond to the difference of their diuretic activity.

Diazoxide↗
PubMed1976

The first seven cases of chronic beryllium disease in ceramic factory workers in Japan.

In the present paper the first 7 cases in Japan of chronic beryllium disease found in workers employed in a ceramic factory utilizing beryllium have been described. Immunological examinations of these cases showed changes similar to those observed in sarcoidosis, that is, negative tuberculin test and increase in serum gamma globulin and immunoglobulins. The fact that a considerable number of workers in the same factories as the patients showed negative tuberculin reaction may suggest that there may be further cases of chronic beryllium disease among them that are still in a latent period.

Adult↗
PubMed1975

A ten-year survey of bacteriuria in the Osaka university hospital.

10 consecutive years of observation of the laboratory data of quantitative urinary bacterial culture in the Central Clinical Laboratory of Osaka University Hospital was made. The marked rise of Pseudomonas and other Enterobacteriaceae was clearly demonstrated. The difference in bacterial species in bacteriuria between inpatients and outpatients strongly suggests that the origin of infection was quite different. The disappearance of Staph. aureus as a causative agent was also demonstrated.

Bacteriuria↗
PubMed1975

Hypokalemia and metabolic alkalosis resulting from overuse of magnesium oxide.

A 23 year old woman had taken large doses of magnesium oxide (up to 20 to 30g per day) initially for habitual constipation and later for idiopathic edema instead of diuretics, until the concealed abuse was discovered. During the abuse she showed hypokalemia and metabolic alkalosis. When the ingestion was stopped, the electrolyte imbalance recovered within two weeks.

Adult↗
PubMed1975

Prognosis of chronic glomerulonephritis with special reference to hypertension and renal function.

Incidence of hypertension in chronic glomerulonephritis and its influence on the clinical course of the disease were studied using statistic technique, especially that of Markovian process. 1. Incidence of hypertension in a total of 283 cases was 15.2%, while in the patients of which renal function reduced to approximately one half of the normal was about 50%. 2. The average of blood pressure in this disease tends to elevate with the decrease in 15 minute value of PSP excretion test and with the increasing serum creatinine level, although the variations are large. 3. After a fall of renal function to approximately one-third of the normal, the rate of clinical course is markedly rapid. 4. The prognosis of the progressive type of chronic glomerulonephritis is obviously affected to be shorten by the presence of hypertension. 5. According to the results obtained by the Markovian approach, survival years of the patients with wide range of renal function can be predicted with relative accuracy.

Adult↗
PubMed1975

Prognosis of chronic glomerulonephritis in adult patients estimated on the basis of the Markov process.

The prognosis of chronic glomerulonephritis based on renal function was assessed using a statistical technique of the Markov process, where the absorbing state was assumed to be an uremic state, 194 adult patients with different types of disease were subjected to study. The 15 min value obtained in the intravenous PSP excretion test was divided into five states; SI (greater than 34%, normal), SII(25-34), SIII(15-24), SIV(5-14) and SV (greater than 5, uremic). The rates of SV with time were calculated with respect to several clinical characteristics. The prognosis of the patients with hypertension, distinct proteinuria and hematuria, or cellular cylindruria appeared to be relatively poor. The estimated number of years from each state to SV were also calculated. The results were similar to those already reported and gave us more exact information about the prognosis.

Adult↗