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Volume 71 (1994 - 199･･･
- Issue 6 Pages 335-
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Volume 71, Issue 6
Displaying 1-7 of 7 articles from this issue
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Shigeru UEKI, Yasutomo IWAI-LIAO, Kwang-Soon HAN, Yoshikage HIGASHI1995 Volume 71 Issue 6 Pages 335-343
Published: March 20, 1995
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSA transmission electron microscopic (TEM) study was conducted on dental pulp obtained from patients under acupuncture or infiltration local analgesia. It was difficult to differentiate lymphatic circulation in the dental pulp that received infiltration anesthesia, because the vessels were constricted, congested, and showed stasis and thrombosis. On the other hand, the dental pulp that received acupuncture showed normal arterioles, capillaries, and venules, as well as some lymph capillaries and small efferent lymphatic vessels that measured about 8 μm and 100 μm in diameter, respectively. The lymphatic endothelial walls had many intercellular gaps, an imperfect basal lamina, and a few discontinuous pericytes. Between the openings in the lymphatic vessels, there were bundles of junctional filaments extending towards the dental pulp connective tissue. Therefore, the lymphatic system, which contains mainly B-3-α capillaries, is a leaky tissue for regulating fluid in the dental pulp.View full abstractDownload PDF (2446K) -
Nobuharu IWAHORI, Kaori NAKAMURA, Ayumi TSUDA1995 Volume 71 Issue 6 Pages 345-353
Published: March 20, 1995
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe intrinsic organization of the nucleus sphericus (NS) was studied in the striated snake using the rapid Golgi method. The NS is a large aggregation of cells located in the posterior portion of the telencephalon and is, as a whole, cupshaped with its hilus oriented in the rostral direction. From the periphery inward, the following three concentric layers were discernible: a marginal layer, mural layer and hilar layer. The marginal layer consists of scattered cells extending dendrites internally toward the hilar layer and externally into the anterior commissure (AC). The mural layer contains densely packed polygonal neurons with dendrites extending internally into the hilar layer and externally toward the marginal layer. The hilar layer consists of scattered cells whose dendrites extend in a transverse direction, distributing mainly in the hilar layer. The axons of the neurons in the marginal and mural layers travel rostromedially, and some axons can be traced into the AC, while those of the neurons in the hilar layer run rostrally, and some are lost among fibers of the accessory olfactory tract (AOT). The afferents to the NS are derived mainly from the AOT and AC. The AOT fibers travel caudally in a thick bundle through the hilus and are distributed totally within the hilar layer, forming a dense fiber plexus. The AC fibers enter the nucleus from the rostromedial aspect and run in an arched course, emitting numerous fine short collaterals.View full abstractDownload PDF (3053K) -
Yukio YOSHIDA1995 Volume 71 Issue 6 Pages 355-363
Published: March 20, 1995
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSAnatomical studies on the extensor pollicis et indicis accessorius and extensor indicis radialis muscles were conducted on 952 upper limbs from 476 Japanese adult cadavers. Each anomalous muscle occurred between the extensor pollicis longus proprius and extensor indicis proprius muscles in the dorsum of the forearm and hand.
The extensor pollicis et indicis accessorius muscle was present in 13 of the limbs (1.4%). It was not coexistent with another anomalous muscle of the extensor digitorum profundus mass in 9 cases, and it was coexistent with that muscle in 4.
The extensor indicis radialis muscle was present in 34 limbs (3.6%). It was accompanied by another anomaly of the extensor digitorum profundus mass in 5 cases, and not accompanied by that muscle in 29.
The extensor pollicis et indicis accessorius and extensor indicis radialis muscles were innervated by the posterior interosseus nerve of the radial nerve. It seems that the former anomalous muscle supplies the extensor control of the thumb and index finger, and the latter one of the index finger only. Each anomalous muscle was considered to be differentiating on the radial side of the extensor digitorum profundus mass in humans.View full abstractDownload PDF (2755K) -
Hisaki FUKUSHIMA, Minoru MATSUDA, Hayato KAWAKAMI, Akihiko KUDO, Yoshi ...1995 Volume 71 Issue 6 Pages 365-370
Published: March 20, 1995
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe localization of estrogen receptors (ER) and progesterone receptors (PgR) in human breast cancer was examined light and electron microscopically by using specific monoclonal antibodies. Among the breast cancer patients, ER-positive (ER[+]) cases were shown by enzyme immunoassay (EIA) to account for 58.9% (63/107), and 63.5% of these cases were women in the postmenopausal state. The PgR-positive (PgR[+]) rate was 50.5% (54/107), with 44.4% of these positive cases being postmenopausal women. The rates of ER(+) and PgR(+), ER negative (ER[-]) and PgR negative (PgR[-]), and ER(+) and PgR(-) cases were 43.9% (47/107),34.6% (37/107) and 15.0% (16/107), respectively. Although ER(-) and PgR(+) cases were in few number, they were found (6.5%,7/107). These results correlated well with those obtained by the immunocytochemical method.
In either case, i.e anti-ER or anti-PgR reaction, positive nuclei and negative nuclei were found intermingled with each other in a given visual field. In electron microscopy, both anti-ER and anti-PgR antibodies bound to sites in the euchromatin area of the nucleus.View full abstractDownload PDF (1993K) -
Kohsuke CHIBA, Shohjiro TAMAMUSHI, Ichiro YAMAMOTO1995 Volume 71 Issue 6 Pages 371-379
Published: March 20, 1995
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSChanges in location of alkaline phosphatase (ALP) in rat hepatocytes after two different treatments were examined by the enzyme cytochemical technique. Although reaction deposits which indicate ALP activity were observed mainly in the bile canalicular membranes until 6hr after colchicine administration, they were present not only in the bile canalicular membranes but also in the sinusoidal and lateral membranes 12hr after drug administration. Eighteen and 24hr after colchicine administration, a large number of reaction deposits were seen in the sinusoidal membranes and in the mutual membranes between adjacent hepatocytes, where the bile canaliculi were completely deformed and complex interdigitations appeared. On the other hand, after bile duct ligation, reaction deposits appeared in every domain of the plasma membranes. Twenty-four hr after colchicine administration to bile-duct-ligated rats, an increase in the number of the reaction deposits was observed, but the location of ALP remained unchanged. The present study suggests that intracellular transport and location of ALP in hepatocytes may be controlled by a common mechanism in colchicinetreated and bile-duct-ligated rats.View full abstractDownload PDF (2198K) -
Iwao SATO, Kazuyuki SHIMADA, Hiromitsu EZURE, Hironori SATO, Tsutomu K ...1995 Volume 71 Issue 6 Pages 381-387
Published: March 20, 1995
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESShe morphology of the sternocleidomastoid muscle (SCM) of human fetuses, ranged from 12 to 32 weeks gestation, was investigated by a light microscopy and a scanning electron microscopy. The collagenous fibers of the perimysium of the SCM formed complex structures from 24 weeks gestation by contrast to fibers of the endomysium of the SCM. The cross-sectional area (CSA) of the bundle of muscle fibers and the CSA of the individual muscle fibers of the SCM increased during development from 12 to 32 weeks gestation, in a process linked to the development of the perimysium. Therefore the perimysium affects and controls to the muscle fiber of the developed SCM and ads to resisting stretch forces in the movements. The changes in the arrangement and development of the collagenous fibers in the perimysium may be correlated to with these of the muscle fibers.View full abstractDownload PDF (2754K) -
A. CASTENHOLZ1995 Volume 71 Issue 6 Pages 389-391
Published: March 20, 1995
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSDownload PDF (662K)
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