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Biomedical subjects

S Takase

Publications and source records attributed to S Takase.

At least 289 records · Page 16Linked to original sources

Distribution of substance P-like immunoreactivity in the lower brainstem of the human fetus: an immunohistochemical study.

The regional distribution of substance P-like immunoreactive (SPI) structures in the lower brainstem of the human fetus was investigated using the indirect immunofluorescence technique. SPI cells were found in a number of areas including the inferior colliculus, central gray matter of the midbrain, n. laterodorsalis tegmenti, midbrain and medullary reticular formation, n. vestibularis inferior, and n. prepositus hypoglossi. An extensive network of SPI fibers of varying densities were identified throughout the lower brainstem.

Brain Stem↗

Absence of Carp's agent in sera of patients with multiple sclerosis in Japan.

A study was devised to test for Carp's agent in the sera of Japanese patients with multiple sclerosis (MS). The sera were obtained from 17 patients with definite MS and six patients with possible MS. Strain C3H mice were given an intraperitoneal injection of 0.1 mL of each serum. One week before and 1, 3, and 6 weeks after inoculation, blood drops from tail tip were smeared and polymorphonuclear leukocytes (PMNLs) were counted. Although the experimental animals were kept under careful control, substantial fluctuation in the number of PMNLs occurred, and the variations of PMNL count in the experimental groups were all within the normal range. We conclude that there is no Carp's agent in the sera of patients with MS in Japan.

Animals↗

Studies on the pathogenesis of the constitutional excretory defect of indocyanine green.

Constitutional excretory defect of indocyanine green (ICG) is characterized by the selective impairment of plasma ICG clearance. We studied binding patterns of ICG to plasma proteins and plasma ICG kinetics in three patients and one relative. Binding patterns of ICG to plasma proteins were modified in subjects with the ICG excretory defect. However, plasma disappearance rates of ICG bound to various protein fractions were not significantly different from each other, except for one case. In the kinetic study of ICG hepatic uptake rates (a values) were decreased, and hepatic reflux rates (b values) were increased in ICG excretory defect and liver cirrhosis. However, a values were unchanged and b values were clearly increased in ICG excretory defect, while a values decreased and changes in b values were slight in liver cirrhosis after loading with a large dose of ICG. These results suggest that active transport of ICG in the hepatic cell membrane is selectively lost in the ICG excretory defect.

Adult↗

Increased frequency of lymphocytotoxic antibodies in patients with multiple sclerosis correlated with disease activity.

Cold-reactive lymphocytotoxic antibodies (LCA) were investigated in sera from patients with multiple sclerosis (MS) in relation to disease activity. When a serum with more than 20% cytotoxicity is considered positive for the presence of LCA, the positive frequency at remission was 21% (6/28), but at exacerbation it was 83% (10/12). All the sera from normal controls were negative. The average of cytotoxicity expressed as a % killing of target cells by sera at remission was 13%; on the other hand, at exacerbation it was 39%. These results showed that in multiple sclerosis the level of LCA was not persistently high, but increased correlating with the disease activity. From these findings and previous experiments of rescue of measles virus antigens, it was suggested that multiple sclerosis is likely a virus-induced autoimmune disease.

Adult↗

Cytological and immunological examination of cerebrospinal fluid in 9 patients with Ramsay Hunt's syndrome.

The purpose of the present study was to carry out the immunological and cytological examination of cerebrospinal fluid in 9 patients with Ramsay Hunt's syndrome. The results obtained were as follows: Among the serum immunoglobulins, IgG in 1 and IgM in 5 of 9 cases increased. The Varicella Zoster antibody titer was significantly elevated in sera of all 9 cases and in CSF of all 7 examined cases. There ws positive fluorescence to Varicella Zoster virus in 2 (Cases 8 and 9) of 4 cases in which CSF smears were examined. The cells showing fluorescence were 10.5% in the former and 1.5% in the latter. Pleocytosis was found in all cases and CSF cell counts ranged from 52 to 2,000/3 mm3 in the early stage. In 3 cases immunoglobulin containing cells (IgG and IgM) were seen about 2-20% within 2 weeks of onset. IgG contents in all and IgG% in 8 of 9 cases, IgA concentration in 7 and IgA% in 7 of 9 cases were increased. These results support the view that the Varicella Zoster virus spreads to the meninges and CSF from ganglions in patients with Ramsay Hunt's syndromes.

Adult↗

Nitrogen balance and hepatic gluconeogenesis in rats fed on diets containing various proportions of carbohydrate and fat.

This study was conducted to investigate the effects of various proportions of dietary carbohydrate and fat in diet on protein and carbohydrate metabolism. The growth rate, nitrogen balance, urinary and serum urea levels, and the activities of key ureogenic and gluconeogenic enzymes in the livers were examined in the weanling and growing rats. The rats were raised on a 20% casein diet containing various proportions of carbohydrate and fat, viz. 30% and 50%, 50% and 30%, 60% and 20% or 70% and 10% as calorie percent, respectively, for 10 days. For both weanling and growing rats, the growth rate was unaffected by the alteration in the proportions of carbohydrate and fat in the diets. However, in the rats fed on the 30% carbohydrate-50% fat diet, the urinary excretion of nitrogen and urea were reduced in both groups and these findings were reflected in the reduced serum urea level. Arginase activity decreased. In contrast, glucose-6-phosphatase activity was enhanced in the animals of the 30% carbohydrate-50% fat diet group as compared to the other groups. These results suggest that a low carbohydrate-high fat diet causes the reduction of urea formation and the enhancement of glucose formation at a fixed level of protein in the diets in weanling as well as in growing rats.

Aging↗