JaLCDOI 10.18926/AMO/30773
FullText URL fulltext.pdf
Author Hitomi, Sayoko| Su, Wei Dong| Hong, Luo Jia| Ohtsuka, Aiji| Murakami, Takuro|
Abstract <p>Sections of the visual cortex of newborn (1-4 weeks after birth) and adult cats were stained with cationic iron colloid, aldehyde fuchsin or lectins (lectin Vicia villosa, soybean and Wisteria floribunda agglutinins). Many neurons in the adult cat visual cortex contained perineuronal sulfated proteoglycans detectable with cationic iron colloid and aldehyde fuchsin, or cell surface glycoproteins reactive to lectins. Double staining indicated that some of the lectin-labeled neurons were not stained with cationic iron colloid, and also that some of the cationic iron colloid-stained neurons were not labeled with lectins. The perineuronal sulfated proteoglycans and cell surface glycoproteins developed 3 weeks after birth. In the newborn cats 1-2 weeks after birth, no neurons were reactive to cationic iron colloid, aldehyde fuchsin or lectins. In the newborn cats 34 weeks after birth, it was clearly observed that the cytoplasm of the glial cells closely associated with the neurons containing the perineuronal sulfated proteoglycans showed an intense reaction to cationic iron colloid and aldehyde fuchsin, and that the Golgi complexes of the neurons with cell surface glycoproteins were intensely labeled with lectins. These findings suggest that the perineuronal sulfated proteoglycans are derived from the associated glial cells, and that the cell surface glycoproteins are produced by the associated nerve cells.</p>
Keywords cat brain perineuronal sulfated proteoglycans cell surface glycoproteins cationic iron colloid aldehyde fuchsin lectin
Amo Type Article
Published Date 1997-12
Publication Title Acta Medica Okayama
Volume volume51
Issue issue6
Publisher Okayama University Medical School
Start Page 295
End Page 299
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 9439770
Web of Science KeyUT 000071183400001
JaLCDOI 10.18926/AMO/31299
FullText URL fulltext.pdf
Author Piao, Da Xun| Ohtsuka, Aiji| Murakami, Takuro|
Abstract <p>Origins and distribution of the human inferior phrenic arteries were studied by dissecting 68 Japanese adult cadavers. The inferior phrenic arteries were usually observed as paired (left and right) vessels. Their origins were summarized as follows: a) the aorta itself (85/138 cases, 61.6%), b) the ventro-visceral arteries (celiaco-mesenteric system of the aorta) including the celiac trunk (39/138 cases, 28.2%) and the left gastric artery (4/138 cases, 2.9%), and c) the latero-visceral arteries (adreno-renal system of the aorta) including the middle adrenal artery (4/138 cases, 2.9%) and the renal artery (6/138 cases, 4.3%). The left and right arteries occasionally originated in common trunk from the aorta, celiaco-mesenteric system or adreno-renal system (22/138 cases, 15.9%). A typological diagram explaining these variations is given. The inferior phrenic arteries, especially the left ones, sometimes issued visceral or esophageal branches. This fact indicates that the inferior phrenic arteries are homologous with the celiac trunk and mesenteric arteries. It is further discussed that the celiac trunk and mesenteric arteries are originally paired vessels, through introduction of our previous typological diagram of the abdominal arteries.</p>
Keywords inferior phrenic artery esophageal branch typology of abdominal arteries
Amo Type Article
Published Date 1998-08
Publication Title Acta Medica Okayama
Volume volume52
Issue issue4
Publisher Okayama University Medical School
Start Page 189
End Page 196
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 9781269
Web of Science KeyUT 000075623600003
JaLCDOI 10.18926/AMO/31320
FullText URL fulltext.pdf
Author Murakami, Takuro| Mabuchi, Masaru| Giuvarasteanu, Lleana| Kikuta, Akio| Ohtsuka, Aiji|
Abstract <p>Some rare anomalies of the celiaco-mesenteric system were observed postmortem in a Japanese adult male: a) The left gastric, common hepatic, splenic and superior mesenteric arteries arose independently from the abdominal aorta. b) The anterior inferior pancreaticoduodenal artery of the superior mesenteric artery issued a hepatic artery which ascended along the anterior surface of the pancreas and gave off the right gastroepiploic, right gastric and cystic arteries. c) The common hepatic artery gave off an anastomosing branch to the superior mesenteric artery. d) The left gastric artery gave off the left accessory hepatic artery. e) The splenic artery issued the accessory middle colic artery. f) The left inferior phrenic artery gave off the esophageal branch. These anomalies are discussed in light of a typological system which we proposed in a previous paper for the celiaco-mesenteric system.</p>
Keywords arterial anomaly celiac trunk left gastric artery hepatic artery splenic artery intermesenteric anastomosis
Amo Type Article
Published Date 1998-10
Publication Title Acta Medica Okayama
Volume volume52
Issue issue5
Publisher Okayama University Medical School
Start Page 239
End Page 244
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 9810433
Web of Science KeyUT 000076694300002
JaLCDOI 10.18926/AMO/30483
FullText URL fulltext.pdf
Author Tsubouchi, Mari| Tsubochi, Yutaka| Hitomi, Sayoko| Ohtsuka, Aiji| Murakami, Takuro|
Abstract <p>Many neurons in the adult rat cingulate cortex possess perineuronal sulfated proteoglycans detectable with cationic iron colloid and aldehyde fuchsin, or cell surface glycoproteins reactive to lectin Vicia villosa or soybean agglutinin. The perineuronal sulfated proteoglycans develop three to four weeks after birth. The cell surface glycoproteins develop at earlier stage or two to three weeks after birth. Dark or active neurons begin to appear three to four weeks after birth. These findings indicate that the brain matures after birth or during weaning period.</p>
Keywords rat brain perineuronal sulfated proteoglycans cell surface glycoproteins dark neurons
Amo Type Article
Published Date 1996-12
Publication Title Acta Medica Okayama
Volume volume50
Issue issue6
Publisher Okayama University Medical School
Start Page 313
End Page 317
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 8985468
Web of Science KeyUT A1996WA04500005
JaLCDOI 10.18926/AMO/30495
FullText URL fulltext.pdf
Author Tsubouchi, Yutaka| Tsubouchi, Mari| Hitomi, Sayoko| Ohtsuka, Aiji| Murakami, Takuro|
Abstract <p>Neurons of cerebellar nuclei in the rat brain had a marked surface coat which was stained with cationic iron colloid or aldehyde fuchsin. Neurons with a similar surface coat were also noted in the retrosplenial cortex. The surface coat was stained doubly with cationic iron colloid and aldehyde fuchsin. Digestion with hyaluronidase eliminated the stainability of the surface coat to both agents. Combined digestion with chondroitinase ABC, heparitinase and keratanase eliminated the cationic iron colloid staining but did not interfere with the aldehyde fuchsin staining. Electron microscopy of ultrathin sections revealed that the iron particles were deposited in the perineuronal tissue spaces. These findings indicate that the surface coat consists of sulfated proteoglycans which occupy, as the extracellular matrix, the perineuronal tissue spaces. Many neurons in the retrosplenial cortex were labeled with lectin Vicia villosa agglutinin. Double staining revealed that these lectin-labeled neurons are usually reactive to cationic iron colloid. Few neurons in the cerebellar nuclei were labeled with lectin V. villosa agglutinin.</p>
Keywords perineuronal sulfated proteoglycans cationic iron colloid staining aldehyde fuchsin staining lectin VVA labeling rat brain
Amo Type Article
Published Date 1996-10
Publication Title Acta Medica Okayama
Volume volume50
Issue issue5
Publisher Okayama University Medical School
Start Page 237
End Page 241
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 8914676
Web of Science KeyUT A1996VQ20600002
JaLCDOI 10.18926/AMO/30497
FullText URL fulltext.pdf
Author Tanaka, Toshihisa| Tsubouchi, Mari| Tsubouchi, Yutaka| Ohtsuka, Aiji| Murakami, Takuro|
Abstract <p>The blood vascular bed, perivascular space and intercellular space of the rat parathyroid gland were studied using scanning electron microscopy of vascular casts, freeze-cracked tissue samples, and NaOH-digested tissue blocks. The findings were supplemented by transmission light and electron microscopy of iron colloid-treated or enzyme-digested tissue sections. The rat parathyroid gland contained a rich network of capillaries. These capillaries were surrounded by marked pericapillary spaces which were demarcated by basal lamina of both capillaries and parenchymal cells. The pericapillary spaces contained numerous collagen fibrils, and issued many crista-like projections which ran deep into the sheets of parenchymal cells. The intercellular spaces of parenchymal cells contained neither basal lamina nor collagen fibrils. The surfaces of the parenchymal cells showed strong negative charging, and maintained the intercellular spaces. The luminal surfaces of the capillary endothelium also showed strong negative charging, and maintained the capillary lumen.</p>
Keywords parathyroid gland cationic and anionic iron colloid stainings vascular casting freeze fracture maceration
Amo Type Article
Published Date 1996-10
Publication Title Acta Medica Okayama
Volume volume50
Issue issue5
Publisher Okayama University Medical School
Start Page 242
End Page 253
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 8914677
Web of Science KeyUT A1996VQ20600003
JaLCDOI 10.18926/AMO/31092
FullText URL fulltext.pdf
Author Murakami, Takuro| Tsubouchi, Mari| Tubouchi, Yutaka| Taguchi, Takehito| Ohtsuka, Aiji|
Abstract <p>Neurons with strongly negatively charged surface coats were recognized in mammalian, avian, reptilian, amphibian and piscine brains. Many large-sized neurons had strongly negatively charged surface coats in the visual cortex and brain stem of the cow, cat, guinea pig, mouse, quail and parakeet. Such neurons were also seen in the brain stem of the lower vertebrates such as the house lizard, Japanese terrapin, bullfrog, newt, carp and sweetfish.</p>
Keywords central nervous system neurons negatively charged surface coats proteoglycans
Amo Type Article
Published Date 1994-08
Publication Title Acta Medica Okayama
Volume volume48
Issue issue4
Publisher Okayama University Medical School
Start Page 195
End Page 197
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 7817774
Web of Science KeyUT A1994PE51400004
JaLCDOI 10.18926/AMO/31000
FullText URL fulltext.pdf
Author Yamamoto, Chugo| Murakami, Takuro| Ohtsuka, Aiji|
Abstract <p>The deep palmar muscles in monkey hands were studied. The contrahentes muscles mainly arose from the capitate bone, descended palmar to the deep palmar branch of the ulnar nerve and the palmar metacarpophalangeal nerves, and attached to the proximal phalanges or wing tendons of the second, fourth and fifth fingers. In relation to the deep palmar branch of the ulnar nerve and the palmar metacarpophalangeal nerves, the contrahentes muscles are homologous with the adductor pollicis and flexor indicis radialis muscles. The contrahentes muscles occasionally gave off some accessory slips which blended with the interosseous muscles. These findings suggest that the human adductor pollicis muscle is a well-developed remnant of a contrahens muscle, and that the human interosseous muscles contain some remnant of the contrahentes muscle. In fact, a well-developed remnant of a contrahens muscle was found in the fourth finger of a human hand. It is further considered that the human adductor pollicis muscle contains an element of the interosseous muscle of the thumb.</p>
Keywords monkey hands contrahentes muscles adductor pollicis muscle flexor indicis radialis musle interosseous muscles
Amo Type Article
Published Date 1988-08
Publication Title Acta Medica Okayama
Volume volume42
Issue issue4
Publisher Okayama University Medical School
Start Page 215
End Page 226
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 3177007
Web of Science KeyUT A1988P884600005
JaLCDOI 10.18926/AMO/31005
FullText URL fulltext.pdf
Author Ikebuchi, Yoshifumi| Murakami, Takuro| Ohtsuka, Aiji|
Abstract <p>The interosseous and lumbrical muscles in twenty-five hands of Japanese adult cadavers were dissected. The palmar and dorsal interosseous muscles continued, with few exceptions, into the wing tendons. The dorsal interosseous muscles gave off tendons which pierced the transverse laminae or passed deep to the transverse laminae, and attached to the bases of the proximal phalanges. The palmar interosseous muscles seldom had such attachments. The palmar and dorsal interosseous muscles sometimes gave off additional tendons which passed superficial to the transverse laminae and attached to the bases of the proximal phalanges. These latter attachments were typical in the contrahentes muscles. Thus, the present findings suggest that the human dorsal interosseous muscles are composite muscles derived from the dorsal abductor, flexor brevis and contrahens muscles, and that the human palmar interosseous muscles are composite muscles derived from the flexor brevis and contrahens muscles. The lumbrical muscles rarely gave off accessory slips with atavistic attachments to the proximal phalanges.</p>
Keywords human hand palmar interosseous muscles dorsal interosseous muslcles lumbrical muscles
Amo Type Article
Published Date 1988-12
Publication Title Acta Medica Okayama
Volume volume42
Issue issue6
Publisher Okayama University Medical School
Start Page 327
End Page 334
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 3239437
Web of Science KeyUT A1988R743300004
JaLCDOI 10.18926/AMO/30373
FullText URL fulltext.pdf
Author Okada, Satoko| Ohtsuka, Aiji| Akagi, Hirofumi| Nishizaki, Kazunori| Masuda, Yu|
Abstract <p>It has previously been confirmed that the guinea pig has aggregations of 10-20 lymphoid follicles at the junction of the nasal cavity and the nasopharyngeal duct. The vascular architecture of this nasal-associated lymphoid tissue (NALT) was studied by the corrosion cast/scanning electron microscope method. The NALT was supplied by branches of the inferior nasal artery. These afferent arterial branches gave off arterioles to the follicles and the interfollicular regions, where the arterioles ramified into capillaries. Some of these arterioles reached the subepithelial region to form a single-layer dense capillary network. The subepithelial capillaries gathered into short collecting venules, which in turn drained into high endothelial venules (HEV) in the interfollicular region. The HEV, which also receives tributaries from the follicular and interfollicular capillary plexuses, descended in the interfollicular regions and finally flowed into the efferent veins at the bottom of the NALT. Indentations impressed by high endothelial cells (HEC) were prominent on the surface of the HEV casts, and their frequency was larger in the upper course or segments than in the lower. This suggests that the incidence of HEC in the upper segments is higher than in the lower segments, and these findings are consistent with the hypothesis that some substances which are taken up into the subepithelial capillaries and transported to the venules induce differentiation and maintain of HEVs.</p>
Keywords nasal-associated lymphoid tisse vascular corrosion cast microvascular architecture high endothelial venule guinea pig
Amo Type Article
Published Date 1995-08
Publication Title Acta Medica Okayama
Volume volume49
Issue issue4
Publisher Okayama University Medical School
Start Page 213
End Page 219
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 7502682
Web of Science KeyUT A1995RR97800006
JaLCDOI 10.18926/AMO/30753
FullText URL fulltext.pdf
Author Nakatani, Satoru| Naito, Ichiro| Momota, Ryusuke| Hinenoya, Noriko| Horiuchi, Kanji| Nishida, Keiichiro| Ohtsuka, Aiji|
Abstract <p>We attempted to prepare colloidal iron within tissues by means of microwave irradiation. Mouse tissue blocks were fixed with a mixture of paraformaldehyde and ferric chloride in a cacodylate buffer, immersed in a cacodylate buffered ferric chloride solution, and irradiated in a microwave processor. Colloidal iron was prepared within tissues or cells, and was observed in the form of electron dense fine granules (1-2 nm in diameter) by transmission electron microscopy. Collagen fibrils in the connective tissue showed colloidal iron deposition at regular periodical intervals. Cells in the splenic tissue showed that fine colloidal granules were deposited on the ribosomes but not on the nuclear chromatin. This finding suggests that ferric ions could not diffuse into the nucleus, which was surrounded by the nuclear envelope. The podocyte processes of the renal glomerulus were stained diffusedly. Though this microwave in situ colloidal iron preparation method has some limitations, it is convenient for use in biomedical specimen preparation in transmission electron microscopy.</p>
Keywords colloidal iron microwave histochemistry transmission electron microscopy
Amo Type Article
Published Date 2006-02
Publication Title Acta Medica Okayama
Volume volume60
Issue issue1
Publisher Okayama University Medical School
Start Page 59
End Page 64
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 16508690
Web of Sience KeyUT 000235538900007
JaLCDOI 10.18926/AMO/31339
FullText URL fulltext.pdf
Author Pu, Jian| Nishida, Keiichiro| Inoue, Hajime| Asahara, Hiroshi| Ohtsuka, Aiji| Murakami, Takuro|
Abstract <p>Mast cells in osteoarthritic and rheumatoid arthritic synovial tissues of the human knee.</p>
Keywords mast cell count osteoaethritis rheumatoid arthritis hydroarthrosis synovial membrance
Amo Type Article
Published Date 1998-02
Publication Title Acta Medica Okayama
Volume volume52
Issue issue1
Publisher Okayama University Medical School
Start Page 35
End Page 39
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 9548992
Web of Science KeyUT 000072264100005
JaLCDOI 10.18926/AMO/31711
FullText URL fulltext.pdf
Author Kosaka, Motohiro| Horiuchi, Kanji| Nishida, Keiichiro| Taguchi, Takehito| Murakami, Takuro| Ohtsuka, Aiji|
Abstract <p>The celiac and mesenteric arterial system including the left gastric, splenic, common hepatic, and superior mesenteric arteries shows various types of origins, courses, ramifications and anastomoses. In order to explain the various expressions of this system, we have proposed a typological model, in which celiacomesenteric arteries develop as paired or bilaterally symmetrical primordial vessels originated from the anterior aspect of the aorta, and these vessels anastomose each other with longitudinal and horizontal pathways. Here, we report 3 unusual cases characterized by arterial rings, formed by the left gastric, left accessory hepatic, proper hepatic, anterior pancreaticoduodenal, and dorsal pancreatic arteries. The dorsal pancreatic and anterior pancreaticoduodenal arteries are located to the right and left of the embryonic pancreas developing in the dorsal mesentery, respectively. Such hepatopancreatic arterial rings simultaneously containing right and left elements can only be explained using our typological model, in which the concept of paired arteries or bilateral symmetry is introduced.</p>
Keywords arterial variation celiac trunk superior mesenteric artery typology bilateral symmetry
Amo Type Article
Published Date 2002-10
Publication Title Acta Medica Okayama
Volume volume56
Issue issue5
Publisher Okayama University Medical School
Start Page 245
End Page 253
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 12530508
Web of Science KeyUT 000178668100005
JaLCDOI 10.18926/AMO/32301
FullText URL fulltext.pdf
Author Endo, Ryutaro| Murakami, Shinichiro| Masuda, Yu| Taguchi, Takehito| Ohtsuka, Aiji| Nishizaki, Kazunori| Murakami, Takuro|
Abstract <p>The present study showed that many neurons in the adult rat brain possessed a perineuronal sulfated proteoglycan surface coat which reacted to cationic iron colloid and aldehyde fuchsin. This surface coat was stained supravitally with Ehrlich's methylene blue and doubly stained with Ehrlich's methylene blue and aldehyde fuchsin. The surface coat was also stained with Gomori's ammoniacal silver and doubly stained with Gomori's ammoniacal silver and cationic iron colloid. The surface coat was usually expressed together with a nerve cell surface glycoprotein net detectable with lectin Wisteria floribunda agglutinin. These findings indicate that the perineuronal proteoglycan surface coat is identical to Cajal's superficial reticulum and contains some collagenous elements. It was further demonstrated that collagenase digestion erased Gomori's ammoniacal silver impregnation within the perineuronal proteoglycan surface coat.</p>
Keywords brain extracellular matrix perineuronal proteoglycans cell surface glycoproteins
Amo Type Article
Published Date 2000-06
Publication Title Acta Medica Okayama
Volume volume54
Issue issue3
Publisher Okayama University Medical School
Start Page 111
End Page 118
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 10925735
Web of Science KeyUT 000087965700003
JaLCDOI 10.18926/AMO/53119
FullText URL 69_1_29.pdf
Author Nakahara, Ryuichi| Nishida, Keiichiro| Hashizume, Kenzo| Harada, Ryouzou| Machida, Takahiro| Horita, Masahiro| Ohtsuka, Aiji| Ozaki, Toshifumi|
Abstract The outcome measures in rheumatology clinical trials (OMERACT) scores are the most mature quantitation system for rheumatoid arthritis (RA) on magnetic resonance imaging (MRI). Direct measuring techniques of synovial volume have been reported with good reproducibility, although few reports have demonstrated the changes of these measures in response to treatment. To assess these clinical responses, we evaluated the correlation of the changes of clinical activity score 28-joints disease activity score (DAS28-CRP) with the changes of OMERACT scores and with synovial volume measurements. Eight RA patients who were treated by biologic agents were examined with MRI of the dominant affected wrist and finger joints before and one year after the treatment. The total OMERACT score was reduced from 48.0 to 41.3, and synovial volume was reduced from 15.4 to 8.8 milliliters. Positive correlations were seen between the changes of DAS28-CRP and the changes of OMERACT synovitis score (r=0.27), OMERACT total score (r=0.43) and synovial volume (r=0.30). Limited to synovium assessment, synovial volume showed a better correlation with DAS28-CRP than the OMERACT synovitis score. On the other hand, the OMERACT total score showed a higher correlation with DAS28-CRP than synovial volume, probably because the OMERACT total score includes scores for bone erosion and bone edema as well.
Keywords magnetic resonance imaging rheumatoid arthritis outcome measures in rheumatology clinical trials scoring system direct volume measuring medical work station
Amo Type Original Article
Published Date 2015-02
Publication Title Acta Medica Okayama
Volume volume69
Issue issue1
Publisher Okayama University Medical School
Start Page 29
End Page 35
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
Copyright Holders CopyrightⒸ 2015 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 25703168
Web of Science KeyUT 000349740300003
Related Url http://ousar.lib.okayama-u.ac.jp/metadata/53113
Author Murakami, Takuro| Piao, Da Xun| Ohtsuka, Aiji| Nishida, Keiichiro|
Published Date 1996-10-31
Publication Title 岡山医学会雑誌
Volume volume108
Issue issue9-10
Content Type Journal Article
Author Yamashita, Toru| Kamiya, Tatsushi| Deguchi, Kentaro| Inaba, Toshiki| Zhang, Hanzhe| Shang, Jingwei| Miyazaki, Kazunori| Ohtsuka, Aiji| Katayama, Yasuo| Abe, Koji|
Published Date 2010-12-01
Publication Title 岡山医学会雑誌
Volume volume122
Issue issue3
Content Type Journal Article
JaLCDOI 10.18926/AMO/49666
FullText URL 67_2_87.pdf
Author Matsuo, Toshihiko| Takeda, Yoshimasa| Ohtsuka, Aiji|
Abstract The purpose of this study was to develop a series of stereoscopic anatomical images of the eye and orbit for use in the curricula of medical schools and residency programs in ophthalmology and other specialties. Layer-by-layer dissection of the eyelid, eyeball, and orbit of a cadaver was performed by an ophthalmologist. A stereoscopic camera system was used to capture a series of anatomical views that were scanned in a panoramic three-dimensional manner around the center of the lid fissure. The images could be rotated 360 degrees in the frontal plane and the angle of views could be tilted up to 90 degrees along the anteroposterior axis perpendicular to the frontal plane around the 360 degrees. The skin, orbicularis oculi muscle, and upper and lower tarsus were sequentially observed. The upper and lower eyelids were removed to expose the bulbar conjunctiva and to insert three 25-gauge trocars for vitrectomy at the location of the pars plana. The cornea was cut at the limbus, and the lens with mature cataract was dislocated. The sclera was cut to observe the trocars from inside the eyeball. The sclera was further cut to visualize the superior oblique muscle with the trochlea and the inferior oblique muscle. The eyeball was dissected completely to observe the optic nerve and the ophthalmic artery. The thin bones of the medial and inferior orbital wall were cracked with a forceps to expose the ethmoid and maxillary sinus, respectively. In conclusion, the serial dissection images visualized aspects of the local anatomy specific to various procedures, including the levator muscle and tarsus for blepharoptosis surgery, 25-gauge trocars as viewed from inside the eye globe for vitrectomy, the oblique muscles for strabismus surgery, and the thin medial and inferior orbital bony walls for orbital bone fractures.
Keywords stereoscopic camera-captured images education local anatomical dissection orbit eye
Amo Type Original Article
Published Date 2013-04
Publication Title Acta Medica Okayama
Volume volume67
Issue issue2
Publisher Okayama University Medical School
Start Page 87
End Page 91
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
Copyright Holders CopyrightⒸ 2013 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 23603924
Web of Science KeyUT 000317801700002
JaLCDOI 10.18926/AMO/32855
FullText URL fulltext.pdf
Author Shimamura, Yasunori| Nishida, Keiichiro| Imatani, Junya| Noda, Tomoyuki| Hashizume, Hiroyuki| Ohtsuka, Aiji| Ozaki, Toshifumi|
Abstract <p>We biomechanically evaluated the bone fixation rigidity of an ONI plate (Group I) during fixation of experimentally created transcondylar humerus fractures in cadaveric elbows, which are the most frequently observed humeral fractures in the elderly, and compared it with the rigidity achieved by 3 conventional fixation methods:an LCP reconstruction plate 3.5 using a locking mechanism (Group II), a conventional reconstruction plate 3.5 (CRP) with a cannulated cancellous screw (Group III), and a CRP with 2 cannulated cancellous screws (CS) in a crisscross orientation (Group IV). In the axial loading test, the mean failure loads were:Group I, 98.9+/-32.6;Group II, 108.5+/-27.2;Group III, 50.0+/-7.5;and Group IV, 34.5+/-12.2 (N). Group I fixations failed at a significantly higher load than those of Groups III and IV (p0.05). In the extension loading test, the mean failure loads were:Group I, 34.0+/-12.4;Group II, 51.0+/-14.8;Group III, 19.3+/-6.0;and Group IV, 14.7+/-3.1 (N). Group IV fixations showed a significantly lower failure load than those of Group I (p0.05). The fixation rigidities against mechanical loading by the ONI plate and LCP plate were comparable. These results suggested that an ONI system might be superior to the CRP and CS method, and comparable to the LCP method in terms of fixation rigidity for distal humerus fractures.</p>
Keywords distal humerus fracture biomechanics internal fixation elderly
Amo Type Original Article
Published Date 2010-04
Publication Title Acta Medica Okayama
Volume volume64
Issue issue2
Publisher Okayama University Medical School
Start Page 115
End Page 120
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 20424666
Web of Science KeyUT 000276996900005
Author Okuma, Yu| Liu, Keyue| Wake, Hidenori| Haruma, Jun| Yoshino, Tadashi| Ohtsuka, Aiji| Takahashi, Hideo| Mori, Shuji| Nishibori, Masahiro| Date, Isao|
Published Date 2013-08-01
Publication Title 岡山医学会雑誌
Volume volume125
Issue issue2
Content Type Journal Article