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Biomedical subjects

T Hojo

Publications and source records attributed to T Hojo.

At least 73 records · Page 4Linked to original sources
PubMed1990

Scanning electron microscopic quantitative study of changes with age in closing pattern of openings of dentinal tubules on worn occlusal surfaces of Japanese permanent mandibular incisors.

Age-related changes in the closing of dentinal tubules of Japanese permanent mandibular incisors were surveyed using a non-destructive replication technique suitable for SEM analysis at the magnifications of up to X3,000. The areas of openings of dentinal tubules on occlusal surfaces decreased significantly between a 20-39-year age group and a 40+ age group, but the number of the openings tended to decrease. Heavy toothwear on occlusal surfaces of these Japanese permanent incisors was evident even at 27 years of age. A subject of 30 years of age showed surprisingly small number of the opening of dentinal tubules on occlusal surface. The occlusal surfaces became smoother in 40-59-year age group as closure of dentinal tubules of openings increased. Early heavy toothwear and early closure of the openings of dentinal tubules may be related to Japanese ethnic diet such as dried hard sardines whole which contain hard bones. Japanese often crush shells of crabs and shrimp with their incisors and canines as they eat.

Adult↗
PubMed1989

Dietary difference and microwear on the teeth of late stone age and early modern people from western Japan.

A small sample of human teeth from western Japan was examined under a scanning electron microscope. All were from sites of two different ages; a Late Stone Age site dating from approximately 4,000 B.P., and an Early Modern site dating from 150-200 B.P. SEM analyses reveal that the scratches on the teeth from the Late Stone Age site tend to be larger and more frequent than those on the teeth from the Early Modern site. These microwear difference may be related to dietary difference between two populations.

Cuspid↗
PubMed1988

Efficient oligoadenylate synthesis catalyzed by uranyl ion complex in aqueous solution.

Polymerization of adenosine-5'-phosphorimidazolide in an aqueous solution was conducted with uranyl ion as a catalyst. Oligoadenylate formation took place efficiently with high regio-selectivity (2'-5' linkage). The oligoadenylates up to hexadecamer were obtained in a high total yield. The chain length and the regio-selectivity of the resulting oligoadenylates varied greatly depending on the concentration of the uranyl ion catalyst. The oligonucleotide formation is likely to be mediated by uranylnucleotide complex.

Adenine Nucleotides↗
PubMed1987

A statistical study on anatomical variation in the origin of the Japanese pectoralis minor muscle.

The origin of the pectoralis minor muscle of Japanese was studied in the dissection practice for medical students in our school of medicine and the incidence of the variation of the origin of this muscle was statistically studied and compared with that of American whites and American negroes. The most frequent types in Japanese were type 2-5 (the pectoralis minor muscle arising from the 2nd, 3rd, 4th and 5th ribs) in males and 2-4 in females on both thoracic sides. Type 2-4 in Japanese females was the most frequent among these three ethnological groups.

Asian People↗
PubMed1986

[Pharmacokinetic studies of a new oral cephem T-2588. Pharmacokinetics in gastrectomized volunteers and the renal excretory system in healthy volunteers].

According to the result of the pharmacokinetic examination of T-2588 (esterified prodrug of T-2525) administered to adult male volunteers who have undergone gastrectomy, it appears that the absorption of T-2588 is delayed in the hypoacidity or the anacidity and also the excretion ratio of T-2525A (an inactive metabolite of T-2525) showed a tendency to become higher in these subjects. Again, according to the result of the pharmacokinetic examination of T-2588 when it was administered together with probenecid to normal healthy volunteers, it appears that the T-2525 is excreted from the kidneys not only into the glomerular filtration but also partly through renal tubules.

Adult↗
PubMed1985

The foot shape of school girls and female farm workers in northern Kyushu.

This is an anthropometric study of the foot shape of 23 school girls of Northern Kyushu. They live in Kitakyushu City and its suburbs. Their parents are descendants of people of Fukuoka Prefecture. While there was no significant difference regarding the foot-length among these school girls and the other two groups of farm workers who lived in the rural areas of Northern Kyushu about two decades ago, these school girls had the narrowest feet with the smallest foot-index (a ratio of the foot-breadth to the foot-length) and the tallest stature. These physical features may be considered to be the result of the urban life and the differences of generation.

Adolescent↗
PubMed1984

Stature, sitting height and relative sitting height of female northern Kyushuites.

Stature, sitting height and relative sitting height (a ratio of sitting height to stature) of 318 high school girls of 17 years of age in Kitakyushu City were studied. They consisted of groups over a three-year period; 1973, 1980 and 1984. There are statistically no significant changes in the stature, in the sitting height, and in the relative sitting height among these three groups. The relative sitting height of these three groups is about 54%, which is about the same as among the Chinese, Eskimos, American-Indians and the Hokkaido-Ainu.

Adolescent↗
PubMed1984

[Japanese anatomical terminology (nomina anatomica japonica) from the educational view point (1)--sune and nezumi].

A few considerations on two Japanese anatomical terms, sune (the anterior part of the leg or the shin in medical terminology) and nezumi (the rat) from the anatomical point of view are made. Japanese words generally have two readings. For example, sune which means the anterior part of the leg, may be read as sune and kei. But kei has two other meanings, the neck and the road. Sune is used more for the anterior part of the leg than kei, especially in classes for beginners of the anatomical course. Nezumi means rat, but is also read as so. Because kei means road, and kan means canal, sokeikan means the rat's tubular passageway, namely, the descent of testis (Descensus testis). In Japanese anatomical terminology the passage of the testis through the inguinal canal is considered similar to a rat going through a passageway. The work sokeikan is better than the English anatomical term inguinal canal which means only the canal in the root of the groin. In Japanese, two words, fukurahagi and komura are used for the posterior part of the leg.

Anatomy↗
PubMed1982

Fluorimetric determination of biogenic 5-hydroxy- and 5-methoxyindoles by high-performance liquid chromatography using perchloric acid as post-column reagent.

A method for the determination of biogenic 5-hydroxy- and 5-methoxyindoles using high-performance liquid chromatography with fluorescence detection was developed. The specific fluorescence of these indoles induced by perchloric acid was utilized as the post-column detection system. The determination limits were 3 pmol for 5-hydroxy-L-tryptophan and 5 pmol for serotonin (5-HT) and 5-hydroxyindole-3-acetic acid (HIAA). The method was applied to the determination of 5-HT and HIAA in rat brain tissues using 5-hydroxygramine as the internal standard.

Animals↗