巻号一覧
74 巻, 1 号
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Takayuki KAWAGOE, Iwao SATO, Toru SATO1997 年 74 巻 1 号 p. 1-7
発行日: 1997/05/20
公開日: 2012/09/24
ジャーナル フリーAt the muscle-bone junction, the attachment is composed of macromolecular components that differ from those in masticatory muscles. In the temporal and lateral pterygoid muscles, numerous fine fibers form complex arrangements between collagenous bundles and the tendon-bone junctions. Collagenous bundles are directly inserted into the bone tissue at the site of the adhesive attachment. Reticular fibers are arranged irregularly and cover the collagenous bundles as a network. Numerous collagenous fibers are also tightly connected with the bundles that are found near the musde-bone junction of the lateral pterygoid muscle. Strong or moderate staining for collagen types I, III, and V, tenascin, laminin, and fibronectin was observed in close association with the border of the bone matrix. Different distributions of these macromolecular components were found in each masticatory musde.
The results suggest that the morphological properties of the muscle-bone junction of each musde reflect the tension or the stretch applied to a mandible bone. The distribution of macromolecular components in each muscle also reflects the form and calcification of the mandibular bone during aging.抄録全体を表示PDF形式でダウンロード (1732K) -
Kiyoshi DOI, Makoto SEKI, Yoshiharu KURODA, Nobutaka OKAMURA, Hisao IT ...1997 年 74 巻 1 号 p. 9-31
発行日: 1997/05/20
公開日: 2012/09/24
ジャーナル フリーWe examined the afferent pathways and terminations in the thalamus from the medial vestibular nudeus (MVe) and the spinal vestibular nucleus (SpVe) with anterograde transport of Phaseolus vulgaris leucoagglutinin (PHAL) and retrograde transport of wheat germ agglutinin conjugated horseradish peroxidase (WGA-HRP). Following PHAL injection into the MVe, many anterogradely labeled fibers and terminal-like boutons were recognized in the central lateral nucleus of the thalamus. Sparse projections were found in the zona incerta, the ventral lateral geniculate nudeus and the compact region of the laterodorsal thalamic nudeus. When PHAL was injected into the SpVe, labeled ascending fibers ran along the lateral lemniscus forming a loose bundle, and terminated in the medial part of the rostrocaudal extent of the medial geniculate body, and the posterior and ventral thalamic nuclei. Futhermore, a few fibers projected to the central lateral nudeus. In order to confirm the indirect thalamic afferents via the spinal trigeminal nudeus, we injected WGA-HRP into the submedius nucleus of the thalamus after PHAL injection into the SpVe. Many anterogradely labeled terminal-like boutons from SpVe were recognized apposing retrogradely labeled spinal trigeminal neurons. Thus, the present results indicate the existence of dual vestibulo-thalamic pathways; a direct projection to the thalamus, and an indirect projection to the submedius nucleus via the spinal trigeminal nucleus.抄録全体を表示PDF形式でダウンロード (4690K) -
B. H. BAY1997 年 74 巻 1 号 p. 33-37
発行日: 1997/05/20
公開日: 2012/09/24
ジャーナル フリーExtracellular ATP has been previously reported to induce cell retraction and stimulate DNA synthesis in human Chang liver cells via phosphoinositide (PI) signal transduction. The ATP-treated cell assumes a rounded morphology phology and is tethered to the substratum by microvillous anchors as demonstrated in this study by scanning electron and confocal microscopy. The addition of 0.5 mM genistein, which is known to completely abolish extracellular ATPstimulated DNA synthesis in Chang liver cells, did not inhibit ATP-induced cell rounding. The results suggest that the seemingly conjoint responses of ATP-stimulated DNA synthesis and cell rounding could be dissociated.抄録全体を表示PDF形式でダウンロード (1044K) -
Thomas KOPPE, Peer ROBMANN, Yoshihiro OHKAWA, Gert-Horst SCHUMACHER, H ...1997 年 74 巻 1 号 p. 39-52
発行日: 1997/05/20
公開日: 2012/09/24
ジャーナル フリーMiniature pigs are extensively used as laboratory animals in studies concerning craniofacial growth and adaptation. However, in contrast to the vast amount of literature regarding the overall growth pattern of the pig's mandible, little is known about the internal structures of the mandible such as the mandibular canal. In order to investigate the position of the mandibular canal (MC) and the thickness of its buccal and lingual walls, a cross-sectional study was performed on female miniature pigs MINI-LEWE covering the period from newborn to adult. The position of the MC was analyzed at bony segments that were obtained by cutting the drys mandibles interdentsdly. At each segment a central point of the MC was defined and its relation to the buccal and lingual margin of the mandible was measured. Located at the lower part of the mandibular corpus, the MC runs in the form of an arch within the sagittal plane in anterior direction, getting enlarged into the form of an ampulla in the molar and premolar region. Whereas during the primary dentition the biggest size of the MC was found behind the third deciduous molar, during the secondary dentition the biggest size of the MC was seen in the region of the first and second permanent molar. With regardthe baccolingual aspect, the central point of the MC was found mainly in the center of the mandibular corpus. Between the 2nd and 5th month as well as at the beginning of the 18th month the thickest canal wall existed on the buccal side. In the period of the eruption of the succedaneous teeth, however, the lingual wall was thicker than the buccal wall. Results suggest that the definite course of the MC achieves relatively early in the miniature pig with the completion of the primary dentition. There were no major changes of the position of the MC in the postnatal period suggesting that the age factor has only a minor effect on the location of the MC.抄録全体を表示PDF形式でダウンロード (2592K) -
Masanori ICHIYAMA, Masahiro ITOH, Takanori MIKI, Qiang XIE, Tsuyoshi K ...1997 年 74 巻 1 号 p. 53-63
発行日: 1997/05/20
公開日: 2012/09/24
ジャーナル フリーWheat germ agglutinin-conjugated horseradish peroxidase (WGA-HRP) injection into the facial nerve of the cat resulted in retrograde labeling in the geniculate and jugular ganglia ipsilaterally. Labeled fibers were found to enter into the brain stem through the intermediate and vagal nerves. These fibers ascended or descended into the dorsal portion of the spinal trigeminal tract and were distributed to the principal sensory nucleus of the trigeminal al nerve, marginal layer of the interpolar part of the spinal trigeminal nucleus, nudeas of the solitary tract and ventrolateral portion of the cuneate nucleus. It was of particular interest in the present study that the intensive labeling was present in the medial portion of laminae ae I-IV of the upper cervical spinal cord. The immunohistochemical study revealed a lot of substance P-immunoreactive neurons in the geniculate and jugular ganglia, and heavy accumulation of immunoreactive fibers in laminae I-II of the upper cervical spinal cord.抄録全体を表示PDF形式でダウンロード (2509K)
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