巻号一覧
67 巻, 6 号
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Yukiyasu Suzuki, Hitoshi Okuda1991 年 67 巻 6 号 p. 405-415
発行日: 1991/03/20
公開日: 2012/09/24
ジャーナル フリーDetailed observations were made of the a. malaris in 25 adult goats by means of the acryl plastic injection methodand the findings obtained were evaluated in comparison with those for other mammals. The malar artery arose from thesuperior wall of the infraorbital artery, lateral to the infraorbital nerve and superomedial to the maxillary tuber, independentlyor rarely in common with the superior alveolar artery. It first passed anterolaterally in the sulcus malaris on the superiorsurface of the lacrimal bulla and gave rise to the third palpebral branch independently or rarely in common with the inferioroblique muscular branch beneath the obliquus inferior muscle, and also the main and accessory inferior oblique and themaxillary sinus branches. The third palpebral branch gave off the periosteal, the conjunctive, the supero- and inferolatera lbranches. After the malar artery gave off the zygomatic branch on the orbital surface of the zygomatic bone, it passedanterosuperiorly up to the incisura malaris at the medial end of the infraorbital margin of the lacrimal bone and gave offthe medial superior and inferior palpebral arteries or a common trunk between them. It continued to pass forwards asthe nasal radical branch after giving off the infraorbital marginal branch and anastomosed with the nasal dorsal branchof the superficial temporal artery. The medial inferior palpebral artery formed the inferior palpebral arterial arch byanastomosing with the lateral inferior palpebral artery of the superficial temporal at the lateral canthus. The inferior palpebralmarginal, the ocular orbicular muscular and the conjunctive branches diverged from the above arterial arch. The medialsuperior palpebral artery gave off the lacrimal canalicular and the nasolacrimal canal branches and anastomosed with thelateral superior palpebral artery or the frontal branch of the superficial temporal at the medial canthus. The characteristicfeatures of the malar artery in the goat were thus the third palpebral branch occasionally diverging from the externa l ophthalmicartery of the maxillary artery, a main and several accessory inferior oblique muscular, the maxillary sinus branches andthe zygomatic branches.抄録全体を表示PDF形式でダウンロード (3500K) -
Chiaki YAMAMOTO, Etsuro KAWANA1991 年 67 巻 6 号 p. 417-428
発行日: 1991/03/20
公開日: 2012/09/24
ジャーナル フリーThe ventrobasal(VB) nucleus has been studied after ablation of somatosensory cortex in 39 adult rats by the application of both NSE- and S-100 protein-immunoreactivity. Both NSE- and S-100 protein-immunoreactivity are confirmed in neurons and reactive astrocytes in the affected VB area and its surroundings, respectively. The NSE-immunoreactivity first starts in the affected VB at seven days postlesion and appears more active in its surrounding area at fourteen days postlesion. At the twenty-eight days, NSE-positive neurons are reduced in number and their stainability becomes weak. The time course of NSE-immunoreactivity is based on the progression of neuronal damage. And it is conceivable that the accumulation of NSE in neurons correlates with the regeneration. The S-100 protein-immunoreactivity is also first detected in the affected area at seven days postlesion and spread in its surrounding area at fourteen days postlesion. At twenty-eight days, S-100 protein-positive astrocytes are reduced in cell volume and their processes become thin. The time course of S-100 protein-immunoreactivity correlates with the degree of astrocytic hypertrophy. And the potent accumulation of S-100 protein appears after the onset of gliosis. The onset of neuronal damage and the repair process can be followed with immunohistochemical technique for both NSE and S-100protein morphologically. Namely, NSE and S-100 protein can be of potential use as markers for destructive processes in the CNS (14).抄録全体を表示PDF形式でダウンロード (4441K) -
Bunsuke OSOGOE, Yoshihisa FUJIKURA, Tetsuo FUKUMOTO1991 年 67 巻 6 号 p. 429-438
発行日: 1991/03/20
公開日: 2012/09/24
ジャーナル フリーThe effects of refeeding subsequent to starvation on the plasma cell population in the lamina propria of the small intestinal villi were studied in adult rats utilizing the immunohistochemical method to detect IgA, IgM and IgG. Under normal conditions of stimulation, intestinal plasma cells (IPC) occur only as a sparse population. However, the present study demonstrated that extensive hyperplasia of IPC could be induced by refeeding after starvation. Starvation for a period of 4 to 6 days alone produced only a small change in the IPC population. In contrast, refeeding subsequent to starvation (for 4 to 6 days) was accompanied by a large increase in the population of IPC: the proportions of these cells among the lamina propria cells often rose to more than 50% within 3 or 6 days. The large majority of the proliferating IPC were found to express IgA, whereas cells bearing IgM or IgG occurred in extremely small numbers in the lamina propria. The mechanism whereby extensive IPC hyperplasia can occur in response to refeeding after starvation is discussed in relation to the possible promotion of transmission of antigenic macromolecules across the mucosal barrier induced by this procedure. It is also suggested that the origin of the proliferating IPC may be correlated with the B cell precursors in the germinal centers of the Peyer's, patches, which are more resistant to starvation than other lymphoid cells.抄録全体を表示PDF形式でダウンロード (3737K) -
Kazutaka OHSAWA, Takao NISHIDA, Masamichi KUROHMARU, Yoshihiro HAYASHI1991 年 67 巻 6 号 p. 439-441
発行日: 1991/03/20
公開日: 2012/09/24
ジャーナル フリーTwo paired retractor muscles, m. retractor phalli cranialis (MRPCr) and m. retractor phalli caudalis (MRPCa)exist as the intrinsic cloacal muscles of the chicken. Pudendal plexus was formed by the ventral rami of roots 30-34. Pudendal nerve (PN) and the intermediated caudal nerve (ICN) were composed of twigs from roots 30-33 and roots 30-34, respectively. Two or three rootlets participated in the PN; its third one originated from the root 33 which is the first root of caudal trunk in pudendal plexus. The non-striated MRPCr was innervated by the PN, whereas the striated MRPCa by the ICN.抄録全体を表示PDF形式でダウンロード (837K) -
K. MAKINO, T. K. YAMADA, K. KUMAKI1991 年 67 巻 6 号 p. 443-448
発行日: 1991/03/20
公開日: 2012/09/24
ジャーナル フリーThe abdominal splanchnic nerves were observed in 22 cadavers (41 sides). The purpose of the study is to give more accurate definition to each nerve, for there are uncertainties in the nomenclature of these nerves. According to PNA, the abdominal splanchnic nerves are classified into three categories, on the basis of their sizes and their levels, namely Nn. splanchnici major, minor, and imus. Although Mitchell (1935) had already claimed that more attention should be given to the levels of ganglia which gave rise to these nerves, no revision has ever been made. Moreover, there still remains the matter of their destinations, which are more significant in defining them. Therefore, in addition to the conventional criteria for the classification, destinations of the nerves were taken into consideration. In the present study,36 out of 41 sides were grouped into four types according to the said criteria.5 exceptional cases were interpreted as results of minor modifications of these four types. Naturally, what is important in describing these nerves is to give clear idea about the actual condition of them. It is expected to give more reasonable nomenclature to these nerves based on the present result.抄録全体を表示PDF形式でダウンロード (1492K) -
Masahiko Y. KIDA, Hiroyuki KUDOH1991 年 67 巻 6 号 p. 449-455
発行日: 1991/03/20
公開日: 2012/09/24
ジャーナル フリーIn one case accompanied by congenital partial absence of the pectoralis major muscle the sternalis muscle was examined to confirm its innervation by means of analysis of intramuscular nerve distribution. It was proved that the sternalis muscle was supplied only by the pectoral nerves even in the case of sternalis in direct contact with the proper thoracic wall. These findings as well as the results of Ura (1937) and Morita (1944) favor the interpretation presented by Eisler (1901), in which the sternalis muscle was described as being supplied only by the pectoral nerves. However, the problem of double innervation of the sternalis requires continued discussion because the relationships between the pectoral nerves and the branches of the intercostal nerves or extramural nerves (Yamada & Mannen,1985; Kodama et al.,1986) have not yet been resolved. The precise genesis of the sternalis muscle should be also examined though it has already been proved to be derived from the pectoralis muscle group including the subcutaneous trunci muscle.抄録全体を表示PDF形式でダウンロード (3027K) -
Bunsuke OSOGOE, Tadashi TSUJII, Helen R. LISZCZYNSKY, Hiroto NAORA, Sa ...1991 年 67 巻 6 号 p. 457-466
発行日: 1991/03/20
公開日: 2012/09/24
ジャーナル フリーThe morphological features of the intestinal mucosa and intra-abdominal lymphoid tissues o f the platypus were examined. The mucosal surface of the intestine was characterized by the formation of large folds instead of the finger-like villi found in placental mammals. The lamina propria of the mucosal fold was well developed and contained numerous lymphocytes, expressing the lymphoid nature which is characteristic of the lamina propria of mammalian intestines. Although numerous well-developed Peyer's patches were observed in the ileum, solitary lymphoid nodules could not be found anywhere in the small intestine. Other intra-abdominal lymphoid tissues, particularly mesenteric lymphoid nodules, were well developed. However, each nodule represented a single follicle in contrast to the mammalian mesenteric lymph node which is composed of numerous follicles fused together. On the basis of the above findings, the tissues in question are considered to be at an evolutionary level preceding that of placental mammals.抄録全体を表示PDF形式でダウンロード (3675K) -
Masao ASARI, Kiyoaki SASAKI, Yutaka KANO, Toshiho NISHITA1991 年 67 巻 6 号 p. 467-471
発行日: 1991/03/20
公開日: 2012/09/24
ジャーナル フリーThe immunolocalization of carbonic anhydrase isozymes in equine salivary glands was investigated for assessment of their biologic functions. In parotid glands, duct segments showed reactivity with CA-I and CA-III. CA-III was selectively located in duct segments, particularly in the basal cells of the interlobular duct. Serous acinar cells were positive for CA-I and CA-II. In submandibular glands, CA-I and CA-II were present in serous demilune and duct segments. CA-II was selectively located in the duct segments, as also noted in the parotid gland. In sublingual glands, CA-I and CA-II were located in serous demilune, as also in the case of the submandibular gland. In the duct segments, all the isozymes considered in this study were found to be present.抄録全体を表示PDF形式でダウンロード (1864K) -
Masao NAKAMURA, Hitomi MAEDA, Toyoaki FUJIMOTO1991 年 67 巻 6 号 p. 473-477
発行日: 1991/03/20
公開日: 2012/09/24
ジャーナル フリーThe distribution and behavior of chick primordial germ cells (PGC) injected into quail embryos were examined. PGC from chick embryos at stages 13-14 were injected into the blood stream of quail embryos at stages 15-20. After one day, the quail embryos were examined histologically. The chick PGC in the quail embryos could be readily identified by the histochemical PAS technique, whereas quail PGC were never stained by PAS. When the chick PGC were injected into the quail embryos during stages 15-18, they appeared mostly in the gonadal region of the recipient quail embryos. A few PGC were found at extragonadal sites. When the chick PGC were injected into the quail embryos at stages 19-20, in which the PGC of the recipient quail embryos had finished their migration into the gonads, most of the donor chick PGC were found at ectopic sites, in the head, trunk and limbs. These results indicate that most of the chick PGC, injected at the earlier stages 15-18, migrated to the gonadal anlagen of the recipient, while following later injection (from stage 19), most of the chick PGC migrated to ectopic sites.抄録全体を表示PDF形式でダウンロード (2061K) -
Kaoru INOUE, Toshio TERASHIMA, Yoshiro INOUE1991 年 67 巻 6 号 p. 479-492
発行日: 1991/03/20
公開日: 2012/09/24
ジャーナル フリーWe studied the postnatal development of the corticopontine tract in mice by the injection of the axon tracer DiI into the visual cortex. In the postnatal day (P) 0.5 mouse, labeled pyramidal tract fibers pass through the internal capsule and cerebral peduncle, grow over the basilar pontine gray, and enter into the medullary pyramid (in this study, P0 refers to the first 24 hours after birth). Small collateral branches arise from these pyramidal tract fibers on P0.5-1.0, and elongate quickly into the basilar pontine gray around P2-4. These collateral branches give off many secondary branches on P4 and form the bright terminal zone in the rostral portion of the lateral basilar pontine gray on P9. In the P16 mouse, this terminal zone is more restricted, suggesting, on the basis of the anterograde DiI labeling technique, that the visual corticopontine projection matures by P16. DiI-labeled pyramidal tract fibers distal to the branching point of the pontine collaterals are found during the postnatal two weeks, but disappear by the later stages. We conclude that the visual corticopontine tract develops as collateral branches of the transient pyramidal tract fibers arising from the visual cortex of the mouse, as just described in the rat (O'Leary and Terashima, Neuron 1: 901-910,1988).抄録全体を表示PDF形式でダウンロード (4198K)
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