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Volume 80 (2003)
- Issue 5.6 Pages 103-
- Issue 4 Pages 71-
- Issue 2.3 Pages 35-
- Issue 1 Pages 1-
Predecessor
Volume 80, Issue 4
Displaying 1-4 of 4 articles from this issue
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Yoichi NAKAMURA, Takayoshi MIYAKI, Shogo HAYASHI, Akira IIMURA, Masahi ...2003 Volume 80 Issue 4 Pages 71-76
Published: 2003
Released on J-STAGE: January 18, 2008
JOURNAL FREE ACCESSThree common branches of the celiac trunk are the left gastric artery, the splenic artery and the common hepatic artery. The variation of the three branches of the celiac trunk has an importance for the arterial supply to the digestive organs of the upper abdomen. in this study, we present three cases of the gastrosplenic and the hepatomesenteric trunks in Japanese cadavers. Especially, in Case 1, the left inferior phrenic artery arose from the gastrosplenic trunk and the left hepatic artery arose from the left gastric artery. in Cases 2 and 3, the common hepatic artery penetrated the pancreatic parenchyma before reaching liver. in Case 3, the right hepatic artery arose from the hepatomesenteric trunk.View full abstractDownload PDF (436K) -
Tomokazu KAWASHIMA, Sayaka YOSHITOMI, Matsuri ITO, Yoshie HOSHINO, Eik ...2003 Volume 80 Issue 4 Pages 77-84
Published: 2003
Released on J-STAGE: January 18, 2008
JOURNAL FREE ACCESSAberrant biceps brachil muscles (BB); the right aberrant head, the left aberrant head, and the left aberrant bundle, were observed bilaterally in a 94-year-old Japanese female cadaver during a regional anatomy of the upper extremities. We examined the nerve supply as well as scrutinizing these aberrant BB.
The branches to the right aberrant head and the right brachialis muscle arose as a common nerve trunk from the musculocutaneous nerve, and both branches entered each muscle from the ventral aspect. The branches to the superior portion of the left aberrant bundle and the short head of the BB arose as a common nerve tmink from the musculocutaneous nerve, and both branches entered each muscle from the dorsal aspect. The branches to the inferior portion of the left aberrant bundle and the left aberrant head arose separately from the musculocutaneous nerve, but they were found to be closely related after peeling off the epineurium.
From these observations, we speculated that the right aberrant head could have differentiated from the brachialis muscle, the left aberrant head from the long head of the BB, and the left aberrant bundle aberrant head from the short and long head of the BB, based on the formation of the common nerve trunk and the close relartion of the nerve fibers.
Our suggested muscular differentiation agreed with the entering aspect (ventral/dorsal aspect.) of the innervatingnerve.View full abstractDownload PDF (502K) -
Ultrastructure of the Ovarian Germ Cells in the Quail Embryos, with Special Reference to the OocytesAtsumi UKESHIMA2003 Volume 80 Issue 4 Pages 85-92
Published: 2003
Released on J-STAGE: January 18, 2008
JOURNAL FREE ACCESSDeveloping germ cells from oogonia to oocyte stages in embryonic quai1 ovaries were observed ultrastructurally. in contrast with those of chicks, quail oocytes showed some conspicuous structures. Typical feature of the Balbiani body, which was constructed by eccentrical concentration of whole organelles, was observed through the oocyte stage, although loose aggregations of organelles were found even at the oogonial stage. Such striking feature of Balbiani body was not observed as yet in any animal species. Golgi apparatus, which occupied the center of a Balbiani body, was often found attaching with the nuclear membrane. This finding suggests that the Balbiani body playsome role for the oocyte maturation.
Upon the nuclear membrane of oocytes, a great number of electron dense structures were found. They were thought to be a kind of nuclear pore complexes. Such abundance of the nuclear pore complexes was another structural characteristic of quai1 oocytes. They increased in number according to the progress of embryonic development, although smal1 numbers were also seen even at the oogonial stage.View full abstractDownload PDF (992K) -
Shunji KUMABE2003 Volume 80 Issue 4 Pages 93-102
Published: 2003
Released on J-STAGE: January 18, 2008
JOURNAL FREE ACCESSImmunohistochemical light microscopy by the enhanced polymer one-step staining (EPOS) method andimmunohistochemical confocal laser scanning microscopy by the labelled streptavidin biotin (LsAB) method were performed on the developing vestibular lamina (VL) of fetal mice at stages from E11 to E14, and the immunohistochemical findings were compared with the findings in the developing dental lamina (DL) and tooth germ. pRb and PCNA were immunolocalized and found to be related to the temporal and spatial expression of cytokines and receptors in the primary epithelial band, VL, DL/enamel organ, and associated mesenchyme. The following results were obtained: 1) EGF, TGFa, EGFR, PCNA, FGF2, pRb, and FGFRI-4 were immunolocalized in the developing tissues. 2) Cytokine expression patterns indicated that the EGF family and FGF2 essentially induced VL generation and cell proliferation. 3) FGFR1 was diffusely localized in the pimiary epithelial band, but was strongly expressed in the E12-14 VL and DL/enamel organ. By contrast, EGFR internalization was observed in the differentiating E13 VL. 4) Expression of pRb was intensely localized in the stratum germinativum of the E13 VL and corresponded to CK-10 expression in the keratinizing VL. The results of this study suggest a mechanism in which FGFRI regulates pRb to induce proliferation of cells in the VL and DL/enamel organ, and, in particular, to incite keratocyte differentiation and subsequent exfoliation of keratinizing VL cells.View full abstractDownload PDF (440K)
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