巻号一覧
63 巻, 5 号
選択された号の論文の7件中1～7を表示しています
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Shigenori OKADA, Yoshikuni OHTA, Takao TOKIOKA, Katsuhiko KURAMAE, Rue ...1986 年 63 巻 5 号 p. 255-263
発行日: 1986年
公開日: 2012/09/24
ジャーナル フリーSummary: Changes in the vascular patterns of the dental pulp and ultrastructural changes of the capillary endothelium during the dentinogenesis of the upper incisor of the rabbit were examined in four regions or stages in the life cycle of the odontoblast.
The pulpal arteries in the differentiating dental papilla cell region and the pre-odontoblastic region immediately spread into capillaries towards the odontoblastic layer. The capillaries formed a network in the shape of polygonal meshes. The capillary wall appeared to be continuous. In the young odontoblastic region, the capillaries undulated and built up a network which stood away from the arterioles, with smaller meshes. The continuous-type capillaries were altered to become fenestrated. The pulpal arteries in the old odontoblastic region formed the subodontoblastic plexus beneath the odontoblastic layer. Capillaries formed loops between the odontoblasts, and the tips of the loops extended to the terminal web. Fenestrations were very often observed near the tips of the loops. In the short odontoblastic region, the arteries directly altered to capillaries, which gave off lower loops at irregular intervals and again appeared to be continuous. Pulpal veins ran peripheral to the arteries anastomosing with one another towards the growing end, and confluenced into larger veins which were located in contact with the alveolar wall.
The vascular patterns of the rabbit incisor pulp through the four regions in the life cycle of the odontoblasts apparently changed in proportion to the morphological changes of the odontoblasts through the. dentinogenesis.抄録全体を表示PDF形式でダウンロード (5395K) -
Kunihiko KIMURA, Kyoko TAKEUCHI1986 年 63 巻 5 号 p. 265-280
発行日: 1986年
公開日: 2012/09/24
ジャーナル フリーSummary: On the basis of 333 male and 274 virgin female animals, the growth of the Jcl: ICR mouse was examined for body weight and body and tail lengths up to the 110th week after birth. using a mixed longitudinal series. Their usual life span of about 80 to 90weeks may be divided into three periods and ten stages/phases: the infantile period up to the 21st day after birth composed of three stages/phases, the juvenile period from the 21st to 50th day composed of two stages/phases, and the adult period after the 7th week composed of five stages/phases.抄録全体を表示PDF形式でダウンロード (2930K) -
Toshio TERASHIMA, Kaoru INOUE, Yoshiro INOUE, Shiro TAKAHASHI, Kazuyo ...1986 年 63 巻 5 号 p. 281-291
発行日: 1986年
公開日: 2012/09/24
ジャーナル フリーSummary: Rhesus monekys were subjected to cortical ablation of the primary motor cortex (Brodmann's area 4). The caudal part of Brodmann's area 6 just rostral to the primary lesion was then secondarily ablated at from 94 to 222 days after the first lesion (doubly lesioned cases). As a control, the cortex of Broadmann's area 4 or the internal capsule was lesioned, but no additional injury was induced. Following death about three weeks later, the medullary pyramid and each segment of the spinal cord were embedded in Epon 812 and semithin sections were prepared for light microscopy. In the doubly lesioned cases, the degenerated myelinated fibers in the upper lumbar cord (L1 or L2) were increased in number compared to those in the eighth thoracic cord (T8). By contrast, the former in the singly lesioned controls were very sparse and less than the latter. The increased number of degenerated fibers observed in the upper lumbar cord of the doubly lesioned cases appear to be ascridable to collateral sprouting budding off from intact corticospinal fibers in response to the primary cortical ablation.抄録全体を表示PDF形式でダウンロード (4113K) -
Toshiko KOMATSU1986 年 63 巻 5 号 p. 293-309
発行日: 1986年
公開日: 2012/09/24
ジャーナル フリーSummary: The localization of gamma-glutamyl transpeptidas e (gamma-GTP) activity in epithelial transitional zones, where two kinds of epithelial cells were present, was studied in normal adult rats by using the enzyme histochemical method.
Gamma-GTP activity was observed without exception in cells of the superficial layer in the squamous epithelial side the following transitional zones: esophago-gastric junction, rectoan al junction, utero-vaginal junction and the excretory duct of the laryngeal gland (stratifie d squamoussimple columnar epithelial junction); fossa navicularis and conjunctiva of the e yelid (stratified squamous-stratified columnar epithelial junction); epiglottis, junction of the nasal pharynx and epiglottis and junction of the oral pharynx and larynx (stratified squamou spseudostratified ciliated epithelial junction); and the junction between the insid e and the outside of the inner root sheath in the epithelial hair follicle.
Higher gamma-GTP activity was generally seen in the epithelial cells of transitional zones than in the neighboring epithelial cells.
As gamma-GTP activity is specific ally present in the epithelial cells of transitional zones, it is a useful marker for identifying the sites of the transitional zones. The epithelial cells in the transitional zone may undergo more extensive proliferation or perform more active functio n in the transfer of amino acids and peptides than other regular epithelial cells do.抄録全体を表示PDF形式でダウンロード (9289K) -
Kazuo YAMASHITA, Takashi WAKABAYASHI, Kayo ADACHI1986 年 63 巻 5 号 p. 311-321
発行日: 1986年
公開日: 2012/09/24
ジャーナル フリーSummary: In hematoxylin (H)-eosin (E) stained, paraffin sections prepared after fixation in 10% neutral buffered formalin, fluorescence microscopy demonstrated mitochondria, juxtaglomerular granules and some other structures in various tissues. Numerous fluorescent mitochondria were observable in hepatocytes under violet or green excitation. In hydrazine-fed mice, mitochondria in hepatocytes were large. In pancreatic acinar cells, bright filamentous mitochondria were demonstrated in the basal cytoplasm and intensely fluorescent secretory granules were in the luminal cytoplasm. Parietal cells of the stomach showed densely packed, fluorescent granular mitochondria. In epithelial cells of the kidney, rod-shaped fluorescent mitchondria exhibited a distinct striation in the basal cytoplasm. Juxtaglomerular cells in the afferent arteriole contained secretory granules which were more intensely fluorescent than mitochondria. Lipofuscin granules were autofluorescent in H-E stained sections of the ovarian interstitial cells, testicular Leydig cells and adrenal cortical cells.抄録全体を表示PDF形式でダウンロード (6026K) -
Takako K. NAKAMURA, Motooki NAKAMURA, Masayoshi YOSHIKAWA, Hiroshi KIY ...1986 年 63 巻 5 号 p. 323-329
発行日: 1986年
公開日: 2012/09/24
ジャーナル フリーSummary: In the present study, the special features of the nerve endings in human periodontal ligaments were examined ultrastructually. They were found to be located in close proximity to nerve bundles and were distributed chiefly in the apical region. Each nerve ending was rouund or oval in shape, and 10μm to 25μm in diameter. They were surrounded by thin Schwann cell cytoplasm, and their axons contained mitochondria, dense bodies, and myelin figures. Their features were similar to those of sensory nerve receptors.抄録全体を表示PDF形式でダウンロード (2748K) -
Ryosuke MIYAUCHI, Gen TACHIBANA, Kazushige KURIHARA1986 年 63 巻 5 号 p. 331-335
発行日: 1986年
公開日: 2012/09/24
ジャーナル フリーSummary: An anomalous muscle was found on the left anterior thoracic wall of a Japanese male, It arose from the fourth rib, ran mediocaudally and inserted into the fifth costochondral junction. The muscle was supplied from its superficial surface by the anterior subbranch from the lateral cutaneous branch of the fourth intercostal nerve.
In terms of its nerve supply, this muscle is discussed from the viewpoint of its true nature and mechanism of formation. The results suggest that the original uppermost slip of the external oblique muscle had formed this muscle through retrogression and disappearance of its mediocaudal portion in the process of ontogenesis.抄録全体を表示PDF形式でダウンロード (2944K)
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