著者

井上 敬子 高山 幹子 石井 哲夫

出版者

THE JAPAN OTOLOGICAL SOCIETY

雑誌

Ear Research Japan (ISSN:02889781)

巻号頁・発行日

vol.19, no.1, pp.83-85, 1988 (Released:2011-08-11)

参考文献数

2

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The tympanic membrane of frog is exposed directoly to the external environment. It is almost round in shape, and is thickened in the central part. Circumferential part is thinner than central part. The tympanic mebrane was uniformly spread along the outer edge of the annular cartilage, and no pars flaccida was observed. Fibrous tissue of the lamina propria consist of radial collagen fiber. The tip of the columella consists of cartilage, loosely adhered to the dorsal surfase of the center of tympanic membrane. Along the columella, there was a loose, wrinkly connective tissue between the tympanic membrane and columella, that is the archetype of malleus handle. The annular cartillage was considered to be the original form of the external auditory canal.

著者

湊川 徹 町塚 博文 稲守 徹 西村 善彦

出版者

THE JAPAN OTOLOGICAL SOCIETY

雑誌

Ear Research Japan (ISSN:02889781)

巻号頁・発行日

vol.19, no.1, pp.77-79, 1988 (Released:2011-08-11)

参考文献数

6

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Developmental anatomy of the tympanic membrane and its relation with the malleus handle was studied using fetal temporal bone specimens. During 16th week of gestation the intermediate mesodermal layer which consist of two laminas-radial layer laterally and circular layer medialy-originate around the tympanic ring as loose connective tissue. The inner circular layer hold the malleus handle and fuses with the periosteum (or perichondrium). The outer radial layer which is thicker than the outer circular layer contains copious blood vessels. After 30th week of gestation conjunction between malleus handle and inner circular layer become loose and lost except outer surface of the malleus handle. Only at the tip of the malleus periosteum is thick and hold by the circular layer which seems to become the umbo.

著者

森満 保 永井 知幸 井手 稔

出版者

THE JAPAN OTOLOGICAL SOCIETY

雑誌

Ear Research Japan (ISSN:02889781)

巻号頁・発行日

vol.14, no.1, pp.304-306, 1983 (Released:2011-08-11)

参考文献数

3

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In the early morning on Jan. 6, 1982, 135 cetaceans were found stranded alive at Aoshima Beach, Miyazaki, Japan. Since Aristotle reported on the strnading of dolphins, single or mass stranding of various kinds of cetaceans have been reported from many parts of the world. However, the reason for such mass stranding is not still fully explained to everyone's satisfaction.We have examined one of them and found a lot of parasites in the bilateral tympanic cavities. The parasites were identified to belong to the genus Nasitrema and closest to Nasitrema gondo Yamaguchi. The number of the parasites were over 30 in each ears, and the mucous membrane of the cavity was inflammed. The ossicular chain was fixed especially the stapes was fixed at the oval window. The periotic bone including the labyrinth was studied histologically. In the labyrinth pathological changes were minimum. However, the octavus nerve was inflammed and many eggs with triangular shape in cross section were found near the nerve. From the findings obtained, we would like to conclude that parasitogenic otitic and octavus neuropathy should be a possible cause of live mass stranding of cetaceans.

著者

大西 信治郎 伊藤 依子

出版者

THE JAPAN OTOLOGICAL SOCIETY

雑誌

臨床耳科 (ISSN:18845800)

巻号頁・発行日

vol.11, no.1, pp.396-397, 1984

著者

増田 游 上田 節夫 西崎 和則 木口 真樹 岡本 宏司 小倉 義郎 永井 廣 鈴木 一憲

出版者

THE JAPAN OTOLOGICAL SOCIETY

雑誌

Ear Research Japan (ISSN:02889781)

巻号頁・発行日

vol.17, no.1, pp.478-481, 1986 (Released:2011-08-11)

参考文献数

5

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Authors showed the inhibitory effect of Cepharanthin, a kind of Alkaloid, on the teratogenicity of maternal hypervitaminosis A in the rat in the previous report. At the present study, besides, the effect to the internal malformations induced by maternal hypervitaminosis A were investigated using the same materials of the previous study. Twenty-four fetuses from 2 mothers treated with excessive vitamin A and 31 from 3 mothers treated with both of excessive vitamin A and Cepharanthin were stained with Inouye's bone and cartilage staining method and the findings of their middle ear region were observed under the light stereoscopic microscope. Difference of middle ear findings between 2 groups suggested that the inhibitory effect of Cepharanthin to the teratogenic activity of excessive vitamin A acts even on the internal malformations of middle ear region by the membrane stabilizing effect of Cepharanthin.

著者

和田 仁 小林 俊光 未武 光子 豊島 勝

出版者

THE JAPAN OTOLOGICAL SOCIETY

雑誌

Ear Research Japan (ISSN:02889781)

巻号頁・発行日

vol.19, no.1, pp.67-69, 1988 (Released:2011-08-11)

参考文献数

6

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Temporal bones are extracted from fresh cadavers, and the condition of only the ear-drum attachment to the temporal bone is made. Then, the dynamical characteristics of the ear-drum of the specimen are measured with a newly developed measuring apparatus. At the same time, applying the impedance theory of the tube to the external auditory canal and the energy method to the ear-drum, the equation corresponding to the output of the apparatus is obtained. Comparing the measurement results and the numerical results, the Young's modulus EE and Damping parameterξE=cE/2 (mEkE) 1/2 are determined to be EE=3.25×108 dyn/cm2 andξE=0.158.

著者

H. Kobayashi Y. Nomura Y. Sakikawa A. Suzuki N. Watanabe

出版者

THE JAPAN OTOLOGICAL SOCIETY

雑誌

Otology Japan (ISSN:09172025)

巻号頁・発行日

vol.3, no.5, pp.780-786, 1994-01-20 (Released:2011-06-17)

参考文献数

15

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Six patients with ear diseases caused by nose blowing are described. Four of them developed perilymphatic fistula.Exploratory tympanotomy was performed on the left ear of case 1 who complained of tinnitus. Leakage was identified in the area of the round window, which was covered with a piece of perichondrium. Three patients (cases 2-4) complained of tinnitus and a floating sensation, echo sound, and dizziness. All of them have the habit of nose blowing.The symptoms disappeared spontaneously after a rest.Two patients (cases 5 and 6) developed fullness of the ear after nose blowing. They were diagnosed as suffering from bullous myringitis. Nose blowing may predispose to formation of bubbles within an infected tympanic membrane.

著者

有馬 敏夫 山元 寅男 増田 玄彦 上村 卓也

出版者

THE JAPAN OTOLOGICAL SOCIETY

雑誌

Ear Research Japan (ISSN:02889781)

巻号頁・発行日

vol.15, no.1, pp.63-65, 1984

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Quick freeze, deep-etch study was done to observe the three-dimentional views of membranes and organelles of stria vascularis. Clathrin basckets of coated vesicles were clearly observed as honey-comb structure, composed of hexagons and pentagons. Most of the basckets were connected to its circumferance by short fibrils. It was seemed that the fibrils had some roles in vesicular transport in marginal cells. Microtubular bundles of cytoplasmic protrusions at base of marginal cells were also observed. Any linking-fibrils between microtubules were not seen in this portion. Many gap junctions were also observed between marginal cells, intermediate cells and basal cells. In some replcas, we observed many protrusions on PS face adjoining the EF face of gap junction.

著者

細川 智 田部 哲也 平出 文久 井上 鉄三

出版者

THE JAPAN OTOLOGICAL SOCIETY

雑誌

Ear Research Japan (ISSN:02889781)

巻号頁・発行日

vol.16, pp.238-240, 1985

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Acute sensori-neural hearing loss after exposure to loud sounds in rock music was experimently studied. With guinea pigs exposed to rock music for tour hours a day during one week, parmanent threshold shift (PTSs) were not recorded. Next, temporal threshold shifts (TTSs) were examied after exposing guinea pigs to rock music for 1-4 hours. There was a increased temporal threshold shifts (TTSs) at over two hours.<BR>Finally, with guinea pigs exposed to rock music for three hours and restricted in the bottle filled with water, temporal threshold shifts (TTSs) were greatest, but parmanent threshold shifts (PTSs) were not recorded at seven days later.

著者

橘 正芳

出版者

THE JAPAN OTOLOGICAL SOCIETY

雑誌

Ear Research Japan (ISSN:02889781)

巻号頁・発行日

vol.12, no.1, pp.13-16, 1981 (Released:2011-08-11)

参考文献数

11

著者

神崎 晶 井上 泰宏 齋藤 秀行 小川 郁

出版者

THE JAPAN OTOLOGICAL SOCIETY

雑誌

Otology Japan (ISSN:09172025)

巻号頁・発行日

vol.22, no.3, pp.205-208, 2012-07-25

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目的) 若手医師、医学部生を対象に3次元 (以下3D) 動画による側頭骨臨床解剖、3D側頭骨CTに関する講習を行った。その教育効果を解析する。<BR>方法) 3D教材の効果をみるために、若手医師向け教材と医学生向け教材を作成し以下2つの試みを行った。<BR>1) 若手医師向けには側頭骨臨床解剖教育動画 (経迷路法、経中頭蓋窩法それぞれ2つの手術アプローチに関する動画) を作成した。その動画を専修医を含む経験年数の若い医師に視聴させた後、質問紙に回答してもらった。2) 医学部生には3D-CT画像あるいは2次元 (以下2D) -CT画像を用いた教材で講義を行い、教育効果について解析した。<BR>結果) 3D動画視聴により、新たに理解できた解剖部位は、1年目医師では「顔面神経」であり、4年目医師では「内耳道」であった。耳鼻咽喉科経験年数を経るにしたがって理解度も向上していた。学生では3D教材による講義は2D教材と比較してより短時間で同じ効果を得た。<BR>結論) 3D教材は理解度の向上、教育の効率化に貢献する可能性を見出した。今後も改良を行って医師・医学部生に対して3D画像・動画による教育システムを検討したい。理解度を評価する方法として試験や質問票の確立も重要である。また、本稿ではご遺体に関する最近のガイドラインについても紹介し、今後の臨床解剖教育の問題点についても言及した。

著者

高橋 晴雄 高野 篤 畑地 憲輔 吉田 晴郎 海江田 哲 安達 朝幸 塚崎 尚紀

出版者

THE JAPAN OTOLOGICAL SOCIETY

雑誌

Otology Japan (ISSN:09172025)

巻号頁・発行日

vol.14, no.2, pp.171-175, 2004

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Pharyngeal orifice of the eustachian tube was ligated in 6 patients, 8 ears withintractable patulous eustachian tube. While the eustachian tube orifice was observed by an endoscope inserted through the contralateral nostril, the orifice was ligated transnasally and/or transorally using instruments usually used in the endoscopic nasal surgery. Now 1 to 6 months after the surgery, the outcome was excellent (both symptoms and sonotubometry were normalized) in 3 ears, good (either symptoms or sonotubometry was improved) in 3 ears, and unchanged in the remaining 2 ears. In one of the ears with an outcome of unchanged, the ligation was found to be spontaneously released soon after surgery, but the symptom was improved after the second operation 2.5months after the first operation. Temporary otitis media with effusion was seen in one ear, and mild inflammation around the ligated site also in one ear, but no other serious complication has been observed. Although further improvement in the surgical procedure and further discussion about its longterm outcome should be required, this procedure appeared to be one of the therapeutic options for intractable patulous eustachian tube.