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Biomedical subjects

T Harada

Publications and source records attributed to T Harada.

At least 1,153 records · Page 64Linked to original sources
PubMed1979

Distribution of membrane-bound monoamine oxidase in bacteria.

The distribution of membrane-bound monoamine oxidase in 30 strains of various bacteria was studied. Monoamine oxidase was determined by using an ammonia-selective electrode; analyses were sensitive and easy to perform. The enzyme was found in some strains of the family Enterobacteriaceae, such as Klebsiella, Enterobacter, Escherichia, Salmonella, Serratia, and Proteus. Among strains of other families of bacteria tested, only Pseudomonas aeruginosa IFO 3901, Micrococcus luteus IFO 12708, and Brevibacterium ammoniagenes IAM 1641 had monoamine oxidase activity. In all of these bacteria except B. ammoniagenes, monoamine oxidase was induced by tyramine and was highly specific for tyramine, octopamine, dopamine, and norepinephrine. The enzyme in two strains oxidized histamine or benzylamine. Correlations between the distributions of membrane-bound monoamine oxidase and arylsulfatase synthesized in the presence of tyramine were discussed.

Bacteria↗
PubMed1979

Expansion of the host range of coliphage P1 and gene transfer from enteric bacteria to other gram-negative bacteria.

The bacterial host range of coliphage P1 was extented by using the heat-inducible phage P1clr100KM. A gene for kanamycin resistance was transferred from Escherichia coli to members of the family Enterobacteriaceae and some other genera of gram-negative bacteria. P1 phage was produced by thermal induction from the lysogens of all these kanamycin-resistant bacteria except some strains.

Bacteria↗
PubMed1979

Transient infantile hyperthyrotropinaemia. Report of a case.

A case of transient hyperthyrotropinaemia was found by mass screening for neonatal hypothyroidism using the paired TSH assay method. The patient was a baby boy born at term after a normal pregnancy who grew without any abnormal signs or symptoms. For the first 7 months after birth, his serum TSH was abnormally high while his total serum T4, T3, and free T4, T3 were within normal limits, exept for slightly low free T4 level at 7 months. The raised serum TSH decreased spontaneously to within normal limits after he was 9 months old.

Humans↗
PubMed1979

Breath hydrogen test for detecting lactose malabsorption in infants and children. Prevalence of lactose malabsorption in Japanese children and adults.

The breath hydrogen test (BHT) was adapted for use in young infants and children. The diagnostic criterion of sugar malabsorption in the BHT was determined by oral administration of 0.5 g/kg of unabsorbable sugar (lactulose) to 21 healthy infants and children. A maximum increase in breath hydrogen less than 0.05 ml/min per m2 was observed in all subjects. A good correlation between results by the BHT and by the ordinary lactose tolerance test was obtained after oral administration of 2 g/kg lactose to 21 healthy infants and children, 2 congenital lactase-deficient infants, and 7 adults. Using this test, 80 healthy Japanese infants and children (aged between one month and 15 years) and 18 adults were examined for lactose malabsorption after a dose of 1 g/kg lactose. All infants and children under 2-years old absorbed lactose completely. The incidence of lactose malabsorption was 30% in 3-year, 36% in 4-year, 58% in 5-year, and 86% in 6-year-old children, 85% in schoolchildren, and 89% in adults. Thus the incidence of lactase deficiency gradually increases with age from 3 years, and about 90% of all normal Japanese adults are lactase-deficient.

Adolescent↗
PubMed1979

The effect of transureteroureterostomy upon conduction of peristaltic waves.

Transureteroureterostomy was performed in 32 adult dogs, and the results were evaluated by electroureterographic, roentgenographic and histological investigations. The results revealed no significant ill effect on ureteral and renal functions, indicating the procedure to be quite reasonable and clinically acceptable.

Action Potentials↗
PubMed1979

Clinicopathological study of soft tissue tumors.

Clinical aspects of patients with soft tissue tumors encountered at the Department of Orthopaedic Surgery, Toho University over a 15 year period between 1961 and 1976 were analyzed. Accurate clinical records and histological findings were available in 91 patients, 80 of whom had benign tumors and 11 of whom had malignant ones. Recurrence was seen in 7 of the 80 patients with benign tumors. The prognosis was poor in those with malignant tumors as expected, especially in those with rhabdomyosarcoma.

Adolescent↗
PubMed1979

A test for analgesics as an indicator of locomotor activity in writhing mice.

Marked depression of locomotor activity was observed in writhing mice given acetic acid i.p. This depression of the activity was evidenced by a squatting posture in reaction to pain. The hypoactivity was reversed dose-dependently by nonnarcotic analgesics such as acetyl-salicylic acid, aminopyrine and mefenamic acid in smaller dosages than those obtained by the conventional writhing syndrome test, and was also reversed dose-dependently by narcotic analgesics such as morphine, pethidine and codeine. Consequently, this hypoactivity test proved to be useful for analgesics screening.

Acetates↗