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Biomedical subjects

J Ito

Publications and source records attributed to J Ito.

At least 433 records · Page 24Linked to original sources
PubMed1978

Femoral bifurcation with tibial aplasia. A case report and review of the literatures.

An extremely rare femoral bifurcation in combination with ipsilateral tibial aplasia, lumbosacral myelomeningocele, anomalies of hand and feet occurred in a premature infant. Review of the pertinent literature suggests that femoral bifurcation usually occurs in association with ipsilateral tibial aplasia. The pathogenesis of this rare congenital anomaly may be associated with an ectopic tibial anlage in the femur and insertions of disorganized muscles.

Abnormalities, Multiple↗
PubMed1977

Angiographic appearance of a huge retrocerebellar arachnoid cyst in an infant.

A detailed analysis of the angiographic findings with a congenital retrocerebellar arachnoid cyst in an infant is reported. The angiographic features are a huge retrocerebellar extra-axial avascular mass compressing and displacing the fourth ventricle anteriorly, dysgenesis of the cerebellum, a tight posterior fossa and transtentorial upward herniation of the monticulus and brainstem.

Arachnoid↗
PubMed1977

Fenestration of the middle cerebral artery.

Three cases of angiographically demonstrated fenestration of the middle cerebral artery are reported. The incidence of demonstration of fenestration of the middle cerebral artery by angiography is 0.26%. Its clinical significance is discussed briefly.

Adult↗
PubMed1977

Transcription of the genome of bacteriophage phi 29: isolation and mapping of the major early mRNA synthesized in vivo and in vitro.

The phi29 early mRNA's synthesized in infected Bacillus subtilis were studied by using sedimentation velocity analysis, polyacrylamide gel electrophoresis, and hybridization of phi29 DNA fragments generated by the restriction endonuclease Eco RI. Viral RNAs synthesized in vivo in the resence of chloramphenicol were found to hybridize to Eco RI-A, -C, and -D fragments, but not to Eco RI-B and -E fragments, of the viral genome. Major early mRNA sedimenting as 16S material in neutral sucrose gradients was examined in detail. Radioactive phi29 RNA, purified by sucrose gradient centrifugation, was hybridized to either the Eco RI-A or Eco RI-C DNA fragment. The RNA was eluted from the hybrids and then tested for complementary hybrid formation with Eco RI-A and -C fragments. RNA eluted from the Eco RI-A fragment annealed only to the Eco RI-A fragment and not to the Eco RI-C fragment. Similarly, RNA eluted from the Eco RI-C fragment hybridized to the Eco RI-C and -D fragments. Viral RNAs synthesized in vitro using B. subtilis RNA polymerase hybridized to both Eco RI-A and -C DNA fragments. Furthermore, RNA initiated with [gamma-(32)P]GTP also hybridized to both Eco RI-A and -C fragments. These results indicate that there are at least two efficient promotors for early transcription on the phi29 chromosome. In addition, a low-molecular-weight RNA initiated with [gamma-(32)P]ATP was found to hybridize exclusively with the Eco RI-A fragment. Kinetic studies of phi29 mRNA synthesis during the lytic cycle have shown that viral RNAs hybridizable to the Eco RI-A and -C fragments are synthesized immediately after phage infection. On the other hand, mRNA specific for the Eco RI-B fragment was not synthesized for several minutes after phage infection. Based on the results of the in vivo and in vitro transcription studies, a transcription map of the phi29 chromosome is proposed.

Bacillus subtilis↗
PubMed1977

Hemoglobin Pyrgos (beta83 Gly replaced by Asp) in a Japanese family.

A screening survey for abnormal hemoglobins at a hospital in Mizunami city, Gifu prefecture, Japan detected a fast-moving variant of hemoglobin in a family of Japanese origin. The abnormal hemoglobin constitutes about 45 percent of the total hemoglobin from the propositus and another carrier in the family, but neither of these persons had anemia, jaundice, cyanosis or splenomegaly. Structural analysis of this hemoglobin revealed that the amino acid substitution was at residue 83 in the beta chain, where a glycine was replaced by an aspartic acid. This hemoglobin variant has been previously reported in a Greek child (hemoglobin Pyrgos) (1). Oxygen affinity of hemoglobin Pyrgos was found to be normal.

Aged↗
PubMed1977

[Radiological anatomy of the anterior cerebral vein (author's transl)].

The anatomy of the anterior cerebral vein is described with injection specimens. Radiological appearance of the anterior cerebral vein is illustrated with conventional angiograms. Stereoscopic films are indispensable to identify the anterior cerebral vein accurately. The anterior communicating vein or the distal end of the anterior cerebral vein indicates the anterior wall of the lower portion of the third ventricle. The anterior cerebral vein is very useful in defining the suprasellar extension of an intrasellar mass.

Brain↗
PubMed1977

Studies on the fresh water cercariae in Leyte Island, Philippines. 4. Cercariae from Viviparidae and Pilidae.

During the period of 1975 and 1976, about two thousand snails of Viviparidae and two hundred snails of Pilidae were examined for cercarial fauna on Leyte Island, Philippines. From the snails of Viviparidae, 8 species of cercariae were found. These species consisted of two furcocercous cercariae, one monostome cercaria, three echinostome cercariae and two xiphidiocercariae. From the snails of Pilidae three species of cercariae were found; namely, one echinostome cercaria, one xiphidiocercaria, and one unknown cercaria. Among these species, one echinostome cercaria and one xiphidiocercaria were found to be common to snails of both families. In this paper these nine species of cercariae were described and illustrated with some remarks on their presumptive life cycles.

Animals↗
PubMed1977

Studies on the fresh water cercariae in Leyte Island, Philippines. 5. Cercariae from Planorbidae.

In the previous papers of this series, the cercariae from Oncomelania quadrasi (Part 2), from Thiaridae (Part 3), and from Viviparidae and Pilidae (Part 4) were reported continuously. The present paper deals with the cercariae from Planorbidae. These studies were all carried on during the period of 1975 and 1976 in Leyte Island, Philippines. The number of snails examined were, 2,214 Segmentina hemisphaerula, 837 Gyraulus convexiusculus, and 279 Indoplanorbis exustus. From the former two species of snails, eight species of cercariae were detected, but no cercaria was found from Indoplanorbis exustus. The eight species of cercariae comprise 3 furcocercous cercariae, 2 amphistome cercariae, one echinostome cercaria and 2 xiphidiocercariae. These are described and illustrated with a tentative name from Cercaria leyteensis no. 29 to Cercaria leyteensis no. 36, in addition with some remarks on their presumptive life histories.

Animals↗
PubMed1977

Studies on the fresh water cercariae in Leyte Island, Philippines. I. Collection of snails.

During the past two years of 1975 and 1976, approximately sixteen thousand specimens of fresh water snails were examined for the presence of cercariae in Leyte Island, Philippines. These snails comprised about 14 species belonging to 7 families, and ultimately 43 species of cercariae were found, namely, 6 species from Oncomelania quadrasi, 13 species from Thiaridae, 9 species from Viviparidae and Pilidae, 8 species from Planorbidae, and 7 species from Lymnaeidae and Bulinidae. As a total, out of 15,925 snails examined, 761 or 4.78% were found infected with cercariae. Up to the present, 22 species of cercariae had been reported from the Philippines, and almost all of them are from Luzon Island only. Therefor, except for the cercaria of Schistosoma japonicum, all of the cercariae in the present study are new discoveries, and most of them are considered as new species. In this paper, the historical review on the cercarial study in the Philippines was made first, then dates and localities of snail collection in the present study were shown in details with some map and table, and general method of cercarial observation was described for the benefit of succeeding reports of this series.

Animals↗