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Volume 70 (1993 - 199･･･
- Issue 6 Pages 247-
- Issue 5 Pages 195-
- Issue 4 Pages 139-
- Issue 2-3 Pages 41-
- Issue 1 Pages 1-
Predecessor
Volume 70, Issue 5
Displaying 1-6 of 6 articles from this issue
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Fumihiko SUWA, Lianjia Yang, Yoshikuni OHTA, Yi-Ru FANG, Hiromi IKE, T ...1993 Volume 70 Issue 5 Pages 195-201
Published: December 20, 1993
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThis histological investigation examined the formation and differentiation of pulp cells under the influence of HAP/BMP complex. HAP/BMP complex was implanted in exposed pulp of the mandibular premolars and alveolar bone defect in the dog. Sequential changes in these areas were examined mainly under a light microscope and partly under a scanning electron microscope. Two weeks after the operation, fibroblast-like cells proliferated right beneath the implanted complex, and after 3 weeks, dentin including dentin tubules grew in the pulp. After four weeks a dentin bridge composed of osteoid dentin was found, and after 8 weeks this dentin calcified and covered the defective surface of the root and adhered to two types: tubular dentin and osteodentin. This complex exhibited outstanding ability to induce dentinogenesis and osteogenesis.View full abstractDownload PDF (2756K) -
Kohsuke CHIDA1993 Volume 70 Issue 5 Pages 203-207
Published: December 20, 1993
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe author attempted the detection of alkaline phosphatase (ALP) protein in various rat organs, which were fixed with formalin and emdedded in paraffin, by means of the avidin-biotin peroxidase complex (ABC) method. Reaction products were detected after a usual incubation time of 30 min at room temperature in anti-ALP antibody. Positive reactions were observed in the kidney and liver but not in the small intestine, and this indicates that the antibody used in the present study reacts only with the tissue-nonspecific type of ALP.View full abstractDownload PDF (1563K) -
Michiya UTSUMI, Shoichi EMURA, Daisuke HAYAKAWA, Tomo YAMAHIRA, Kishik ...1993 Volume 70 Issue 5 Pages 209-217
Published: December 20, 1993
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe ultrastructure of the parathyroid glands of magnesium-treated golden hamsters exposed to a 5 gravity environment was studied. In the parathyroid glands of the magnesium-treated animals exposed to a hypergravity environment, the Golgi complexes and cisternae of the granular endoplasmic reticulum were increased as compared to those of the magnesium-treated animals and decreased as compared to those of animals exposed to a hypergravity environment, but were almost the same as those of the control animals. In the control and experimental animals, the chief cells were rich in free ribosomes and mitochondria. In addition, numerous secrectory granules were situated close to the plasma membrane in the magnesium-treated animals exposed to a hypergravity environment. These observations suggest that the synthesis of parathroid hormone may be stimulated in the parathyroid glands of magnesium-treated hamsters exposed to hypergravity environment.View full abstractDownload PDF (4144K) -
Takashi NAKANO1993 Volume 70 Issue 5 Pages 219-229
Published: December 20, 1993
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe three-dimensional architecture of the subepithelial connective tissue layer in the mouse retromolar region was studied by scanning electron microscopy after removal of the epithelial layer. The connective tissue papillae (CTP) of the taste bud papillae (the retromolar papillae) appeared as a barnacle-like in form and had the round depression, corresponding to the site of taste bud, on their top. The CTP of the retromolar papillae and the openings of the salivary glands were concentrated collectively in the narrow zone just posterior to the molar teeth. This topographical relationship seems to reflect a physiological function; i. e., the food ground by the molar teeth is dissolved in saliva and stimulates the taste buds in the retromolar papillae. Further, the conical or cylindrical CTP were arranged around the CTP of the retromolar papillae. It is suggested that the conical or cylindrical CTP play an important role in increasing the epithelial-connective tissue interface and in resisting the excessive force during mastication.View full abstractDownload PDF (3585K) -
Ming ZHOU, Shuji YAMASHITA1993 Volume 70 Issue 5 Pages 231-235
Published: December 20, 1993
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe rat liver was fixed with microwave (MW) fixation technique using a domestic microwave oven and glutamate dehydrogenase (GDH) was immunostained in the liver. The structure of liver was well preserved and formation of artificial vacuoles was hardly recognizable in the cytoplasm of liver cells when 2% paraformaldehyde containing 10% glucose and 0.025% CaCl2 was employed for a fixative and continuous MW irradiation was carried out for 30 sec. Granulated immunoreaction products of GDH were present in the cytoplasm of the liver cells and Kuppfer cells. The intensity of the reaction was almost homogeneous among the cells. On the other hand, when the tissue was fixed with immersion fixation method, a diffuse reaction was seen in the cytoplasm of liver cells and intensity of the immunostaining was heterogeneous among the cells; the liver cells in zone 2 showed weaker reaction than those in zone 1 and 3. Immunoelectron microscopy revealed that GDH was located in the mitochondrial matrix along the inner membrane including cristal membrane.View full abstractDownload PDF (2202K) -
Junko YAHIRO, Sakuichiro MIYOSHI1993 Volume 70 Issue 5 Pages 237-245
Published: December 20, 1993
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSA case of circumaortic renal venous collar, the first such collar to be observed in a Japanese female cadaver, is presented, and its anatomical organization is compared with that in another case in which four right renal veins accompanied four right and three left renal arteries in a Japanese male cadaver. Dobule left renal veins are formed by persistence of a more central retroaortic venous anastomosis, in contrast to multiple right renal veins, which are formed by persistence of some embryonic renal veins arranged in ladder-like patterns. In our case, the dorsal limb of the renal collar communicated with the azygos system veins and lumbar veins. The azygos system veins were considered to have atrophied as a result of some persisting retroaortic venous anastomoses located in the thorax. Therefore, we believe that the renal collar was related to the atrophy of the azygos system veins. To determine whether there are racial differences in incidence of renal collar, further studies in Asians are required.View full abstractDownload PDF (3322K)
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