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Odagiri K, Yamauchi K, Toda M, Uchida A, Tsubota H, Zenba K, Okawai H, Eda H, Mizuno S, Yokota H. Feasibility study of a LED light irradiation device for the treatment of chronic neck with shoulder muscle pain/stiffness. PLoS One 2022; 17:e0276320. [PMID: 36251669 PMCID: PMC9576044 DOI: 10.1371/journal.pone.0276320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Accepted: 09/30/2022] [Indexed: 11/19/2022] Open
Abstract
Neck with shoulder muscle stiffness/pain is a common disorder. Commonly used physical therapy, pharmacotherapy, acupuncture, and moxibustion only temporarily alleviate the disorder in most cases, thus the disorder often recurs. Low power laser therapy is often used for neck and shoulder stiffness/pain and has been effective in clinical trials. In this study, we evaluated the safety and effectiveness of a newly developed self-care device for disorders including neck with shoulder muscle stiffness/pain. The device incorporates light-emitting diodes (LEDs), which are safer than lasers, as its light source. Ten adults with neck with shoulder muscle stiffness/pain were subject to LED irradiation (wavelength 780 nm ± 15 nm, output 750 mW, power density 3.8 W/cm2, energy density 5.7×102 J/cm2) for 3 minutes on the affected shoulder at a standard acupuncture point (GB21, Jianjing). Immediately after irradiation, the subjective symptoms of the neck with shoulder muscle stiffness and pain evaluated by a visual analog scale were improved from 58.3 mm ± 18.7 mm to 45.5 mm ± 21.5 mm and from 45.8 mm ± 23.3 mm to 39.4 mm ± 21.8 mm, respectively. The symptoms further improved after 15 minutes of irradiation. The skin temperature at the irradiated point increased from 34.3°C ± 1.1°C to 41.0°C ± 0.7°C. The increase in skin temperature was observed within approximately 5 cm of the irradiated area. There was no effect on the heart rate variability, a measure of the autonomic nervous system; however, the baroreflex sensitivity was slightly increased. No irradiation-related adverse skin events were observed. Our LED irradiation device was found to be safe, and it improved the subjective symptoms of muscle stiff neck with shoulders.
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Affiliation(s)
- Keiichi Odagiri
- Center for Clinical Research, Hamamatsu University Hospital, Hamamatsu, Japan
- * E-mail: (KO); (HY)
| | - Katsuya Yamauchi
- Department of Rehabilitation Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Masahiro Toda
- Department of Rehabilitation Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Ayako Uchida
- Center for Clinical Research, Hamamatsu University Hospital, Hamamatsu, Japan
| | - Hiromi Tsubota
- Center for Clinical Research, Hamamatsu University Hospital, Hamamatsu, Japan
| | - Kazuyoshi Zenba
- Isehara Clinical Trial Center, Zenba-Acupuncture and Moxibustion Clinic, Isehara, Japan
| | | | - Hideo Eda
- The Graduate School for the Creation of New Photonics Industries, Hamamatsu, Japan
| | - Seiichiro Mizuno
- The Graduate School for the Creation of New Photonics Industries, Hamamatsu, Japan
| | - Hiroaki Yokota
- The Graduate School for the Creation of New Photonics Industries, Hamamatsu, Japan
- * E-mail: (KO); (HY)
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2
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Komatsu N, Bando N, Uchida A, Ooi HK. Discovery of cockroach specimens of the genus Squamoptera (Ectobiidae: Pseudophyllodromiinae) from Okinawa, Japan, showing wing polymorphism. Trop Biomed 2021; 38:222-225. [PMID: 34362864 DOI: 10.47665/tb.38.3.061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cockroach specimens of the genus, Squamoptera were collected from the Iriomote island of Okinawa prefecture, Japan. The morphological features of the specimens were characterized as having a white band on the dorsal surface of its thorax, its tegmen reduced into a tiny scale-like structure and the hindwing was absent. Ocelli was also absent and the small compound eyes not extending to apex of the head nor to the frontal face but extend further lower than the base of the antennae. When the specimens were reared in the laboratory, besides the short wing form, the long wing form began to appear in the rearing colony. In our reproductive biological study, we observed that hatching of the ootheca from the short wing female takes about 30 days, with an average of 6.6 nymphs being hatched from one ootheca. The male to female ratio of the offspring was 36:30. However, the frequency appearance of the offspring from the ootheca of the short wing female was 98.5% short wing and 1.5% long wing form. Our specimens occasionally show body polymorphism in the form of individuals having long wings instead of the usual short one. The long wing form does not show the white band on the dorsal surface of its thorax.
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Affiliation(s)
- N Komatsu
- Civil International Corporation, 1-10-14 Kitaueno, Taito, Tokyo 110-0014 Japan
| | - N Bando
- Super Buddies, 422 Nosoko, Ishigaki, Okinawa 907-0333 Japan
| | - A Uchida
- aboratory of Parasitology, Faculty of Animal Health Technology, Yamazaki University of Animal Health Technology, 4-7-2 Minami-osawa, Hachioji, Tokyo 192-0364 Japan
| | - H K Ooi
- aboratory of Parasitology, Faculty of Animal Health Technology, Yamazaki University of Animal Health Technology, 4-7-2 Minami-osawa, Hachioji, Tokyo 192-0364 Japan.,Laboratory of Parasitology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Sagamihara, Kanagawa 252-5201 Japan
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3
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Mihashi I, Ishii K, Ogawa Y, Uchida A, Hara H, Tamaoka A. Normocalcemic Primary Hyperparathyroidism Presenting with Muscle Weakness and Body Pain. Intern Med 2021; 60:953-956. [PMID: 33250466 PMCID: PMC8024951 DOI: 10.2169/internalmedicine.6131-20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 10/02/2020] [Indexed: 11/06/2022] Open
Abstract
We herein report a 39-year-old woman who had aggravated body pain, waddling gait, and fatigability for the past 2 years. A neurological examination showed hyperreflexia and proximal muscle weakness. The serum calcium level was normal (10.1 mg/dL). However, serum alkaline phosphatase (3,855 IU/I) and parathyroid hormone (1,008 pg/mL) levels were remarkably high. Cervical ultrasonography revealed parathyroid goiter. The patient was diagnosed with hyperparathyroidism. Her muscle weakness and pain improved within three months after parathyroidectomy. Our findings suggest that clinicians should consider hyperparathyroidism as a differential diagnosis in patients with proximal muscle weakness, even if the serum calcium level is normal.
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Affiliation(s)
- Izumi Mihashi
- Department of Neurology, Faculty of Medicine, University of Tsukuba, Japan
| | - Kazuhiro Ishii
- Department of Neurology, Faculty of Medicine, University of Tsukuba, Japan
| | - Yasuhiro Ogawa
- Department of Neurology, Faculty of Medicine, University of Tsukuba, Japan
| | - Ayako Uchida
- Department of Neurology, Faculty of Medicine, University of Tsukuba, Japan
| | - Hisato Hara
- Department of Endocrine Breast and Endocrine Surgery, Faculty of Medicine, University of Tsukuba, Japan
| | - Akira Tamaoka
- Department of Neurology, Faculty of Medicine, University of Tsukuba, Japan
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4
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Uchida A, Kasuga Y, Ota M, Yano T. The effects of boysenberries on cholesterol metabolism to prevent atherosclerosis. Journal of Nutrition & Intermediary Metabolism 2017. [DOI: 10.1016/j.jnim.2017.04.138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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5
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Acerbi E, Chénard C, Miller D, Gaultier NE, Heinle CE, Chang VWC, Uchida A, Drautz-Moses DI, Schuster SC, Lauro FM. Ecological succession of the microbial communities of an air-conditioning cooling coil in the tropics. Indoor Air 2017; 27:345-353. [PMID: 27120709 DOI: 10.1111/ina.12306] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Accepted: 04/22/2016] [Indexed: 06/05/2023]
Abstract
Air-conditioning systems harbor microorganisms, potentially spreading them to indoor environments. While air and surfaces in air-conditioning systems are periodically sampled as potential sources of indoor microbes, little is known about the dynamics of cooling coil-associated communities and their effect on the downstream airflow. Here, we conducted a 4-week time series sampling to characterize the succession of an air-conditioning duct and cooling coil after cleaning. Using an universal primer pair targeting hypervariable regions of the 16S/18S ribosomal RNA, we observed a community succession for the condensed water, with the most abundant airborne taxon Agaricomycetes fungi dominating the initial phase and Sphingomonas bacteria becoming the most prevalent taxa toward the end of the experiment. Duplicate air samples collected upstream and downstream of the coil suggest that the system does not act as ecological filter or source/sink for specific microbial taxa during the duration of the experiment.
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Affiliation(s)
- E Acerbi
- Singapore Centre on Environmental Life Sciences Engineering (SCELSE), Nanyang Technological University, Singapore, Singapore
| | - C Chénard
- Singapore Centre on Environmental Life Sciences Engineering (SCELSE), Nanyang Technological University, Singapore, Singapore
| | - D Miller
- Singapore Centre on Environmental Life Sciences Engineering (SCELSE), Nanyang Technological University, Singapore, Singapore
| | - N E Gaultier
- Singapore Centre on Environmental Life Sciences Engineering (SCELSE), Nanyang Technological University, Singapore, Singapore
| | - C E Heinle
- Singapore Centre on Environmental Life Sciences Engineering (SCELSE), Nanyang Technological University, Singapore, Singapore
| | - V W-C Chang
- School of Civil and Environmental Engineering, Nanyang Technological University, Singapore, Singapore
| | - A Uchida
- Singapore Centre on Environmental Life Sciences Engineering (SCELSE), Nanyang Technological University, Singapore, Singapore
| | - D I Drautz-Moses
- Singapore Centre on Environmental Life Sciences Engineering (SCELSE), Nanyang Technological University, Singapore, Singapore
| | - S C Schuster
- Singapore Centre on Environmental Life Sciences Engineering (SCELSE), Nanyang Technological University, Singapore, Singapore
| | - F M Lauro
- Singapore Centre on Environmental Life Sciences Engineering (SCELSE), Nanyang Technological University, Singapore, Singapore
- Asian School of the Environment, Nanyang Technological University, Singapore, Singapore
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6
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Takahashi S, Seki Y, Uchida A, Nakayama K, Satoh H. Are tyrosine residues involved in the photoconversion of the water-soluble chlorophyll-binding protein of Chenopodium album? Plant Biol (Stuttg) 2015; 17:632-638. [PMID: 25287526 DOI: 10.1111/plb.12274] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Accepted: 09/29/2014] [Indexed: 06/03/2023]
Abstract
Non-photosynthetic and hydrophilic chlorophyll (Chl) proteins, called water-soluble Chl-binding proteins (WSCPs), are distributed in various species of Chenopodiaceae, Amaranthaceae, Polygonaceae and Brassicaceae. Based on their photoconvertibility, WSCPs are categorised into two classes: Class I (photoconvertible) and Class II (non-photoconvertible). Chenopodium album WSCP (CaWSCP; Class I) is able to convert the chlorin skeleton of Chl a into a bacteriochlorin-like skeleton under light in the presence of molecular oxygen. Potassium iodide (KI) is a strong inhibitor of the photoconversion. Because KI attacks tyrosine residues in proteins, tyrosine residues in CaWSCP are considered to be important amino acid residues for the photoconversion. Recently, we identified the gene encoding CaWSCP and found that the mature region of CaWSCP contained four tyrosine residues: Tyr13, Tyr14, Tyr87 and Tyr134. To gain insight into the effect of the tyrosine residues on the photoconversion, we constructed 15 mutant proteins (Y13A, Y14A, Y87A, Y134A, Y13-14A, Y13-87A, Y13-134A, Y14-87A, Y14-134A, Y87-134A, Y13-14-87A, Y13-14-134A, Y13-87-134A, Y14-87-134A and Y13-14-87-134A) using site-directed mutagenesis. Amazingly, all the mutant proteins retained not only chlorophyll-binding activity, but also photoconvertibility. Furthermore, we found that KI strongly inhibited the photoconversion of Y13-14-87-134A. These findings indicated that the four tyrosine residues are not essential for the photoconversion.
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Affiliation(s)
- S Takahashi
- Department of Biomolecular Science, Toho University, Funabashi, Chiba, Japan
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7
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Komatsu N, Kawakami Y, Banzai A, Ooi HK, Uchida A. Species clarification of Ogasawara cockroaches which inhabit Japan. Trop Biomed 2015; 32:98-108. [PMID: 25801258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The so-called "Ogasawara cockroaches" were examined by morphological observations and by breeding experiments to elucidate their actual taxonomical status. Fourteen groups (isolate) of "Ogasawara cockroaches" collected from Iwoto-A, Iwoto-B, Hahajima, Chichijima, Nishijima, Nakodojima, Tokunoshima-A, Tokunoshima-B, Okinawato- A, Okinawa-B, Amamiooshima, Miyakojima, Ishigakijima and Hawaii, were bred and passaged in our laboratory. Cockroaches collected from the field were first reared individually and the sexes of their offspring examined. Cockroaches collected from Iwoto, Tokushima and Okinawa, were found to consist of two groups; those whose offspring were all female and the other whose offspring consist of both male and female. Cross-breeding experiments showed that individuals from the group that did not produce any male but only female offspring were parthenogenetic. On the contrary, the group that have bisexual individuals produced both male and female offspring in a ratio of 1:1. Our results show that the so-called "Ogasawara cockroaches" consist of 2 species, namely, Pycnoscelus surinamensis and Pycnoscelus indicus. There are areas in which both species co-habitated together and there are also areas in which either only one of the two species can be found. The group that reproduces only female offspring and only through parthenogenesis was identified as P. surinamensis. The group that reproduces heterosexually and produce male and female offspring was identified as P. indicus. Thus, the so-called "Ogasawara cockroaches" found in Japan actually consist of 2 species, namely, P. surinamensis and P. indicus, which can be differentiated using the solitary breeding method to demonstrate parthenogenesis in the former and the need for sexual reproduction in the latter.
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Affiliation(s)
- N Komatsu
- Civil International Corporation, 1-10-14 Kitaueno, Taito, Tokyo 110-0014 Japan
| | - Y Kawakami
- Laboratory of Parasitology, School of Life and Environmental Science, Azabu University, 1-17-71 Fuchinobe, Sagamihara, Kanagawa 252-5201 Japan
| | - A Banzai
- Laboratory of Parasitology, School of Life and Environmental Science, Azabu University, 1-17-71 Fuchinobe, Sagamihara, Kanagawa 252-5201 Japan
| | - H K Ooi
- Laboratory of Parasitology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Sagamihara, Kanagawa 252-5201 Japan
| | - A Uchida
- Yamazaki Gakuen University, 4-7-2 Minami-osawa, Hachioji, Tokyo 192-0364 Japan
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8
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Yumioka E, Chinen H, Moriyama H, Nonomura K, Senkyu S, Uchida A. Cultureing periods of thawed blastocysts until embryo transfer:clinical outcome. Fertil Steril 2014. [DOI: 10.1016/j.fertnstert.2014.07.1032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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9
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Melo RMV, Costa LMA, Uchida A, Oikawa FTC, Ribeiro HB, Garcia RMR, Ribeiro EE, Hueb W, Ramires JAF, Kalil Filho R. Prevention of myocardial injury after percutaneous coronary interventions with remote ischemic preconditioning. A comparative analysis with biomarkers and cardiac magnetic resonance. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p5487] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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10
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Altarawneh MM, Chern GW, Harrison N, Batista CD, Uchida A, Jaime M, Rickel DG, Crooker SA, Mielke CH, Betts JB, Mitchell JF, Hoch MJR. Cascade of magnetic field induced spin transitions in LaCoO3. Phys Rev Lett 2012; 109:037201. [PMID: 22861888 DOI: 10.1103/physrevlett.109.037201] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2012] [Indexed: 06/01/2023]
Abstract
We present magnetization and magnetostriction studies of LaCoO3 in magnetic fields approaching 100 T. In contrast with expectations from single-ion models, the data reveal two distinct first-order transitions and well-defined magnetization plateaus. The magnetization at the higher plateau is only about half the saturation value expected for spin-1 Co3+ ions. These findings strongly suggest collective behavior induced by interactions between different electronic configurations of Co3+ ions. We propose a model that predicts crystalline spin textures and a cascade of four magnetic phase transitions at high fields, of which the first two account for the experimental data.
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Affiliation(s)
- M M Altarawneh
- National High Magnetic Field Laboratory, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
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11
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Uchida A, Ishii Y, Kouyama Y, Tateda K. Crystal structure of the class D β-lactamase OXA-40. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311087873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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12
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Yoshikawa H, Ueda T, Kudawara I, Araki N, Yonenobu K, Ochi T, Uchida A. Surgical treatment for skeletal metastases from soft tissue sarcomas: experience with 23 lesions in 20 patients. Sarcoma 2011; 2:107-14. [PMID: 18521241 PMCID: PMC2395386 DOI: 10.1080/13577149878064] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Purpose. This paper reports the procedures and the clinical results of a series of surgical treatments for skeletal metastases from soft tissue sarcomas.Subjects and methods. Surgical treatment of metastatic bony lesions from soft tissue sarcomas has been carried out over a 20 year period (1975-1996). Thirty-two patients developed skeletal metastases from soft tissue sarcomas, and 20 of these cases received surgical treatment. The 23 metastatic bony lesions in these 20 patients were treated using the following surgical approaches: wide resection with prosthetic replacement in five lesions, wide or marginal resection without reconstruction in four lesions, intramedullarly nailing with curettage and methylmethacrylate cementation in four lesions, marginal resection of vertebral body with replacement by a ceramic prosthesis in three lesions, laminectomy in three lesions, intramedullarly nailing in two lesions, and curettage in two lesions.Results. Relief of pain was achieved in 17 of the 20 patients. The ambulatory status of the patients with metastasis in the lower extremity or periacetabular region was significantly improved in nine of 10 cases. Seventeen patients died of disease, with a mean survival period of 17.9 months after surgery for metastasis.Discussion. Although surgical treatment for skeletal metastases from soft tissue sarcomas cannot save the life of the patient, it can be of value in improving their well-being and overall quality of life. In these cases, surgical intervention may be more frequently indicated than in tumors with an osteoblastic or mixed pattern.
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Affiliation(s)
- H Yoshikawa
- Department of Orthopaedic Surgery Osaka Medical Center for Cancer and Cardiovascular Diseases 1-3-3, Nakamichi Higashinari-ku Osaka 537 Japan
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13
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Rontani D, Locquet A, Sciamanna M, Citrin DS, Uchida A. Generation of orthogonal codes with chaotic optical systems. Opt Lett 2011; 36:2287-2289. [PMID: 21685995 DOI: 10.1364/ol.36.002287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We propose to use an electro-optic oscillator based on two Mach-Zehnder modulators in two different delayed feedback loops to generate two orthogonal chaotic spreading sequences (codes). We numerically demonstrate, for such codes, spectrally efficient multiplexing and demultiplexing of two digital data streams at multi-Gb/s rates using chaos synchronization and covariance-based detection.
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Affiliation(s)
- D Rontani
- Supélec, OPTEL and LMOPS EA-4423, 2 Rue Edouard Belin, F-57070 Metz, France.
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Minobe K, Ono R, Matsumine A, Shibata-Minoshima F, Izawa K, Oki T, Kitaura J, Iino T, Takita J, Iwamoto S, Hori H, Komada Y, Uchida A, Hayashi Y, Kitamura T, Nosaka T. Expression of ADAMTS4 in Ewing's sarcoma. Int J Oncol 2010; 37:569-81. [PMID: 20664926 DOI: 10.3892/ijo_00000706] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Ewing's sarcoma (EWS) is a malignant bone tumor that frequently occurs in teenagers. Genetic mutations which cause EWS have been investigated, and the most frequent one proved to be a fusion gene between EWS gene of chromosome 22 and the FLI1 gene of chromosome 11. However, a limited numbers of useful biological markers for diagnosis of EWS are available. In this study, we identified ADAMTS4 (a disintegrin and metalloproteinase with thrombospondin motifs) as a possible tumor marker for EWS using the retrovirus-mediated signal sequence trap method. ADAMTS4 is a secreted protein of 837 amino acids with a predicted molecular mass of 98-100 kDa. It is a member of metalloprotease family, is expressed mainly in cartilage and brain, and regulates the degradation of aggrecans. ADAMTS4 has been suggested to be involved in arthritic diseases and gliomas. Herein, we show that ADAMTS4 mRNA was expressed in all primary EWS samples and all EWS-derived cell lines examined, while its expression was detected only in small subpopulations of other solid tumors. Furthermore, ADAMTS4 expression was found to be regulated by EWS-FLI1 fusion gene-dependent manner. We also demonstrated that ADAMTS4 protein was highly expressed in tumor samples of the patients with EWS by using immunohistochemistry. These results suggest that ADAMTS4 is a novel tumor marker for EWS.
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Affiliation(s)
- K Minobe
- Department of Microbiology and Molecular Genetics, Mie University Graduate School of Medicine, Tsu, Japan
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15
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McLamore ES, Shi J, Jaroch D, Claussen JC, Uchida A, Jiang Y, Zhang W, Donkin SS, Banks MK, Buhman KK, Teegarden D, Rickus JL, Porterfield DM. A self referencing platinum nanoparticle decorated enzyme-based microbiosensor for real time measurement of physiological glucose transport. Biosens Bioelectron 2010; 26:2237-45. [PMID: 20965716 DOI: 10.1016/j.bios.2010.09.041] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2010] [Revised: 08/31/2010] [Accepted: 09/21/2010] [Indexed: 10/19/2022]
Abstract
Glucose is the central molecule in many biochemical pathways, and numerous approaches have been developed for fabricating micro biosensors designed to measure glucose concentration in/near cells and/or tissues. An inherent problem for microsensors used in physiological studies is a low signal-to-noise ratio, which is further complicated by concentration drift due to the metabolic activity of cells. A microsensor technique designed to filter extraneous electrical noise and provide direct quantification of active membrane transport is known as self-referencing. Self-referencing involves oscillation of a single microsensor via computer-controlled stepper motors within a stable gradient formed near cells/tissues (i.e., within the concentration boundary layer). The non-invasive technique provides direct measurement of trans-membrane (or trans-tissue) analyte flux. A glucose micro biosensor was fabricated using deposition of nanomaterials (platinum black, multiwalled carbon nanotubes, Nafion) and glucose oxidase on a platinum/iridium microelectrode. The highly sensitive/selective biosensor was used in the self-referencing modality for cell/tissue physiological transport studies. Detailed analysis of signal drift/noise filtering via phase sensitive detection (including a post-measurement analytical technique) are provided. Using this highly sensitive technique, physiological glucose uptake is demonstrated in a wide range of metabolic and pharmacological studies. Use of this technique is demonstrated for cancer cell physiology, bioenergetics, diabetes, and microbial biofilm physiology. This robust and versatile biosensor technique will provide much insight into biological transport in biomedical, environmental, and agricultural research applications.
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Affiliation(s)
- E S McLamore
- Bindley Bioscience Center, Physiological Sensing Facility, Purdue University, 1203 W, State Street, West Lafayette, IN, USA
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16
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Matsubara T, Kusuzaki K, Matsumine A, Murata H, Marunaka Y, Hosogi S, Uchida A, Sudo A. Photodynamic therapy with acridine orange in musculoskeletal sarcomas. ACTA ACUST UNITED AC 2010; 92:760-2. [PMID: 20513869 DOI: 10.1302/0301-620x.92b6.23788] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Limb salvage involving wide resection and reconstruction is now well established for managing musculoskeletal sarcomas. However, involvement of major nerves and vessels with a large volume of muscle and skin may result in a useless limb, contributing to depression and a low quality of life. We have been studying alternative treatments for musculoskeletal sarcoma since 1990, and have recently established a regime using photodynamic surgery with cells labelled with acridine orange, photodynamic therapy with cells treated similarly and radiodynamic treatment using the effect of X-rays on such cells. These techniques have been used after marginal or intralesional resection of tumours since 1999 and have enabled maintenance of excellent limb function in patients with sarcomas.
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Affiliation(s)
- T Matsubara
- Department of Orthopaedic Surgery Mie University Graduate School of Medicine, Edobashi 2-174 Tsu City, Japan
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Okamura N, Hasegawa M, Nakoshi Y, Iino T, Sudo A, Imanaka-Yoshida K, Yoshida T, Uchida A. Deficiency of tenascin-C delays articular cartilage repair in mice. Osteoarthritis Cartilage 2010; 18:839-48. [PMID: 19747998 DOI: 10.1016/j.joca.2009.08.013] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2009] [Revised: 08/13/2009] [Accepted: 08/26/2009] [Indexed: 02/02/2023]
Abstract
OBJECTIVE In human articular cartilage, tenascin-C (TN-C) expression decreases during maturation of chondrocytes, and almost disappears in adults; however, it reappears in damaged cartilage. To examine the effects of TN-C on cartilage degeneration and repair, we compared articular cartilage degeneration between wild-type (WT) and tenascin-C knockout mouse (TNKO) mice using a spontaneous osteoarthritis (OA) in aged joints and surgical OA model. In addition, we made full-thickness cartilage defects and compared the cartilage repair process between the two groups. METHODS The surgical procedure to create degenerative OA model was performed by transecting the anterior cruciate ligament and medial collateral ligament. Full-thickness defects were created in the center of the femoral trochlea to evaluate cartilage repair. Sections of cartilage were stained with hematoxylin and eosin or safranin-O, and immunostaining for TN-C. The degrees of degeneration and repair were graded. RESULTS In the WT surgical OA model, the articular cartilage was almost normal at 2 weeks, but safranin-O decreased staining at 4 weeks. In TNKO mice, safranin-O decreased staining at 2 weeks, and cartilage was injured intensely at 4 weeks. In the cartilage repair model, TN-C was expressed after 1 week, was strongly expressed in the upper layer of regenerated tissue after 3 weeks, and disappeared after 6 weeks. The defects were restored until 6 weeks in WT mice; however, defects in TNKO mice were filled with fibrous tissue with no cartilage-like tissue. CONCLUSIONS This study revealed that cartilage repair in TNKO mice was significantly slower than that in WT mice and that the deficiency of TN-C progressed during cartilage degeneration.
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Affiliation(s)
- N Okamura
- Departments of Orthopedic Surgery, Mie University Graduate School of Medicine, Mie, Japan
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18
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Abstract
OBJECTIVE Aseptic loosening is one of the most important problems that can occur after total hip arthroplasty (THA). In this study, we analysed levels of large tenascin-C (TN-C) variants and compared them in pseudosynovial fluid from patients with aseptic loosening after THA with those in synovial fluid from patients undergoing primary THA (control). METHODS Pseudosynovial fluid samples (n = 24) were obtained by aspiration at the time of revision THA performed due to aseptic loosening. Synovial fluid samples (n = 12) were obtained by aspiration at the time of primary THA. Expression of TN-C splice variants was examined using immunoblotting. TN-C levels were measured using an enzyme-linked immunosorbent assay (ELISA) system that we developed previously. RESULTS Western blotting showed the presence of large TN-C variants in pseudosynovial fluid of artificial joints with loosening. TN-C levels were approximately three times higher in pseudosynovial fluid of loose artificial joints (median 151.9 ng/mL) than in synovial fluid controls (median 50.1 ng/mL) (p = 0.035). CONCLUSION Levels of TN-C including large variant subunits are elevated in pseudosynovial fluid of loose artificial joints, indicating that TN-C is a useful novel biochemical marker of loose hip prostheses.
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Affiliation(s)
- M Hasegawa
- Department of Orthopaedic Surgery, Mie University Faculty of Medicine, Japan.
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Abstract
Ectopic infection with Paragonimus miyazakii was determined to be the cause of a subcutaneous inguinal mass in a 15-month-old, male, boar-hunting dog. On histologic examination, the mass comprised granulomatous panniculitis, intralesional adult trematodes and eggs, and lymphadenitis. Extrapulmonary paragonimosis in animals is rare. This appears to be the first report in a dog of ectopic P. miyazakii infection with mature trematodes and eggs that involved the inguinofemoral lymphocenter and surrounding subcutis.
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Affiliation(s)
- H Madarame
- Laboratory of Small Animal Clinics, Veterinary Teaching Hospital, Azabu University, Kanagawa 229-8501, Japan.
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Sugimura Y, Murase T, Oyama K, Uchida A, Sato N, Hayasaka S, Kano Y, Takagishi Y, Hayashi Y, Oiso Y, Murata Y. Prevention of neural tube defects by loss of function of inducible nitric oxide synthase in fetuses of a mouse model of streptozotocin-induced diabetes. Diabetologia 2009; 52:962-71. [PMID: 19283362 DOI: 10.1007/s00125-009-1312-0] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2008] [Accepted: 02/08/2009] [Indexed: 12/12/2022]
Abstract
AIMS/HYPOTHESIS Maternal diabetes during pregnancy increases the risk of congenital malformations such as neural tube defects (NTDs). Although the mechanism of this effect is uncertain, it is known that levels of nitric oxide synthase (NOS) and nitric oxide are elevated in embryos of a mouse model of diabetes. We postulated that overproduction of nitric oxide causes diabetes-induced congenital malformations and that inhibition of inducible NOS (iNOS) might prevent diabetic embryopathy. METHODS Mice were rendered hyperglycaemic by intraperitoneal injection of streptozotocin. The incidence of congenital malformations including NTDs was evaluated on gestational day 18.5. We assessed the involvement of iNOS in diabetes-induced malformation by administering ONO-1714, a specific inhibitor of iNOS, to pregnant mice with streptozotocin-induced diabetic mice and by screening mice with iNOS deficiency due to genetic knockout (iNos(-/-)). RESULTS ONO-1714 markedly reduced the incidence of congenital anomalies, including NTDs, in fetuses of a mouse model of diabetes. It also prevented apoptosis in the head region of fetuses, indicating that iNOS is involved in diabetes-related congenital malformations. Indeed, no NTDs were observed in fetuses of diabetic iNos(-/-) mice and the incidence of other malformations was also markedly reduced. CONCLUSIONS/INTERPRETATION We conclude that increased iNOS activity during organogenesis plays a crucial role in the pathogenesis of diabetes-induced malformations and suggest that inhibitors of iNOS might help prevent malformations, especially NTDs, in diabetic pregnancy.
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Affiliation(s)
- Y Sugimura
- Department of Genetics, Research Institute of Environmental Medicine, Nagoya University, Chikusa-ku, Nagoya, Japan
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Morishita K, Kasai Y, Ueta T, Shiba K, Akeda K, Uchida A. Patellar tendon reflex as a predictor of improving motor paralysis in complete paralysis due to cervical cord injury. Spinal Cord 2009; 47:640-2. [PMID: 19223860 DOI: 10.1038/sc.2009.8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
STUDY DESIGN A retrospective study. OBJECTIVE We have encountered several cases of complete sensorimotor paralysis in which patellar tendon reflex (PTR) was demonstrated approximately 3 days after injury and improvement of motor paralysis was subsequently achieved. We considered that PTR apparent in the early stage after injury may offer an index to predict improvements in motor paralysis. MATERIALS AND METHODS A total of 142 patients assessed as ASIA Impairment Scale A on admission from 1979 to 1998 were included in the study. The patients who demonstrated PTR within 72 h after injury were classified as the PTR(+) group and those who did not constituted the PTR(-) group. With regard to the method of motor paralysis assessment at about 6 months after injury, patients assessed as ASIA Impairment Scale A or B (that is, complete motor paralysis) were classified as 'Non-recovered', whereas those assessed as ASIA Impairment Scale C, D or E (that is, showing obvious improvement of motor paralysis) were considered as 'Recovered'. RESULTS A significant difference was noted between groups, with the Recovered group including 16 of the 17 PTR(+) patients (94.1%) and 11 of the 115 PTR(-) patients (9.6%) (P<0.0001). CONCLUSION The results obtained indicate that motor paralysis recovery could be expected at a very high rate among patients demonstrating PTR within 72 h of injury. As all physicians should be familiar with the PTR, this seems to represent a simple and highly useful sign to predict improvements in motor paralysis during the acute stage of cervical cord injury.
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Affiliation(s)
- K Morishita
- Department of Orthopaedic Surgery, Mie University Graduate School of Medicine, Mie Prefecture, Japan
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Matsumine A, Kusuzaki K, Nakamura T, Nakazora S, Niimi R, Matsubara T, Uchida K, Murata T, Kudawara I, Ueda T, Naka N, Araki N, Maeda M, Uchida A. Differentiation between neurofibromas and malignant peripheral nerve sheath tumors in neurofibromatosis 1 evaluated by MRI. J Cancer Res Clin Oncol 2008; 135:891-900. [DOI: 10.1007/s00432-008-0523-y] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2008] [Accepted: 11/19/2008] [Indexed: 11/30/2022]
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Hayashida-Soiza G, Uchida A, Mori N, Kuwahara Y, Ishida Y. Purification and characterization of antibacterial substances produced by a marine bacteriumPseudoalteromonas haloplanktisstrain. J Appl Microbiol 2008; 105:1672-7. [DOI: 10.1111/j.1365-2672.2008.03878.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Yoshimura K, Davis P, Uchida A. Invariance of Frequency Difference in Nonresonant Entrainment of Detuned Oscillators Induced by Common White Noise. ACTA ACUST UNITED AC 2008. [DOI: 10.1143/ptp.120.621] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Uchida A, Shibayama T, Takahashi S, Hamada N, Kawata N, Tada A, Soda R, Takahashi K. 537 POSTER Detection of EGFR mutation in the sample of pleural effusion is contributive as a determinant of EGFR-TKI-therapy for the patients with lung cancer. EJC Suppl 2008. [DOI: 10.1016/s1359-6349(08)72471-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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26
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Uchida A, Ohtsuki T, Oonishi I. Water-soluble chlorophyll-binding protein from Chenopodium album. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308087916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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27
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Nakamura T, Kusuzaki K, Matsubara T, Satonaka H, Shintani K, Wakabayashi T, Matsumine A, Uchida A. Histiocytic osteolysis secondary to hyperbilirubinaemia: a case report. J Orthop Surg (Hong Kong) 2008; 16:263-6. [PMID: 18725687 DOI: 10.1177/230949900801600229] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
A 6-year-old boy with Alagille syndrome, characterised by marked hyperbilirubinaemia, presented with malunion of a pathological fracture of the femur with local bone atrophy and insufficient callus formation. During corrective osteotomy, it was noted that the femur was stained dark green, suggestive of bilirubin deposition. Histology of the resected bone revealed the presence of many histiocytes and osteoclast-like multinucleate giant cells containing bilirubin particles in the cytoplasm causing bone resorption. These findings suggest that bilirubin may activate macrophages to form osteoclast-like multinucleate giant cells, resulting in histiocytic osteolysis.
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Affiliation(s)
- T Nakamura
- Department of Orthopaedic Surgery, Mie University Faculty of Medicine, Tsu, Mie, Japan
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Hori K, Sudo A, Wakabayashi H, Matsumine A, Kusuzaki K, Uchida A. Asymptomatic disseminated carcinomatosis of bone marrow presenting as hyperphosphatasia: report of a case. Acta Gastroenterol Belg 2008; 71:271-274. [PMID: 18720942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Metastatic involvement of the musculoskeletal system is one of the most significant clinical issues facing orthopaedic oncologists. The number of patients with metastasis to the skeletal system from a carcinoma is 15 times greater than the number of patients with primary bone tumours of all types. However, progression patterns like disseminated carcinomatosis of bone marrow are comparatively rare. The pathophysiology for disseminated carcinomatosis of bone marrow, with a prognosis reported to be very poor, is still unknown. We describe a patient who had no symptoms with hyperphosphatasia. Bone scintigraphy showed a so-called super bone scan and a needle biopsy from the ileum showed adenocarcinoma cells. Additional endoscopic investigation was performed and signet cell gastric cancer was found. From the bone scan and biopsy, we established the diagnosis of disseminated carcinomatosis of the bone marrow. From the experience of this case, we believe that intensive stomach investigation should be considered in cases with hyperphosphatasia, even when the patient has no symptoms.
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Affiliation(s)
- K Hori
- Department of Orthopaedic Surgery, Mie University Graduate School of Medicine, Mie, Japan
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Hasegawa M, Nakoshi Y, Tsujii M, Sudo A, Masuda H, Yoshida T, Uchida A. Changes in biochemical markers and prediction of effectiveness of intra-articular hyaluronan in patients with knee osteoarthritis. Osteoarthritis Cartilage 2008; 16:526-9. [PMID: 17951079 DOI: 10.1016/j.joca.2007.09.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2007] [Accepted: 09/11/2007] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Intra-articular injection of hyaluronan (HA) is frequently used to treat knee osteoarthritis (OA). We studied whether HA injections induced significant changes in levels of biochemical markers in synovial fluid (SF). In addition, we investigated the possibility of predicting the effectiveness of HA based on these biochemical markers. METHODS Twenty-eight patients with knee OA underwent five weekly intra-articular injections of HA. Knee pain was measured on visual analog scale (VAS) before and after the five injections. Levels of biochemical markers, including chondroitin 6-sulfate (C6S), chondroitin 4-sulfate (C4S), keratan sulfate (KS), and tenascin-C (TN-C), were determined before and after the five injections. Correlations between the biochemical markers before HA injection and the improvement of VAS after the five injections were evaluated. RESULTS After HA injections, levels of C6S, C4S, and KS decreased significantly. Inverse correlations were observed between the levels of TN-C and C4S before HA injection and improvement of VAS after the five injections. In contrast, no significant correlation was seen between levels of C6S and KS before injections and improvement of VAS after the five injections. CONCLUSION The reduction in C6S, C4S, and KS levels after HA injections reflects that HA could help maintain normal cartilage metabolism. Our findings suggest that HA injections are effective in patients whose knees contain low levels of TN-C and C4S, reflecting an early stage of OA and limited synovitis.
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Affiliation(s)
- M Hasegawa
- Department of Orthopaedic Surgery, Mie University Graduate School of Medicine, Mie, Japan.
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Nakamura T, Kusuzaki K, Matsubara T, Matsumine A, Uchida A. Foreign-body granulomas in the trunk and extremities may simulate malignant soft-tissue tumors: report of three cases. Acta Radiol 2008; 49:80-3. [PMID: 18210316 DOI: 10.1080/02841850701675727] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Three cases of foreign-body granulomas arising from soft tissues of the extremities or trunk are reported. All patients had a history of having undergone surgery 19 to 35 years ago. It was difficult to distinguish these granulomas from malignant soft-tissue tumors preoperatively by magnetic resonance (MR) images, as the tumors were over 10 cm in diameter and degenerated foreign bodies could not be detected on MR images. Finally, a histological diagnosis of foreign-body granuloma was made by preoperative or intraoperative biopsy in all cases. A palpable tumor adjacent to a previous surgery scar is therefore a warning that it might represent a granuloma, in spite of various image findings.
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Affiliation(s)
- T. Nakamura
- Department of Orthopedic Surgery, Mie University Faculty of Medicine, Tsu, Mie, Japan
| | - K. Kusuzaki
- Department of Orthopedic Surgery, Mie University Faculty of Medicine, Tsu, Mie, Japan
| | - T. Matsubara
- Department of Orthopedic Surgery, Mie University Faculty of Medicine, Tsu, Mie, Japan
| | - A. Matsumine
- Department of Orthopedic Surgery, Mie University Faculty of Medicine, Tsu, Mie, Japan
| | - A. Uchida
- Department of Orthopedic Surgery, Mie University Faculty of Medicine, Tsu, Mie, Japan
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Kato H, Matsumine A, Wakabayashi T, Hasegawa M, Sudo A, Shintani K, Fukuda A, Kato K, Ide N, Orita S, Hasegawa T, Matsumura C, Furukawa M, Tasaki T, Sonoda H, Uchida A. Large-scale gene expression profiles, differentially represented in osteoarthritic synovium of the knee joint using cDNA microarray technology. Biomarkers 2007; 12:384-402. [PMID: 17564844 DOI: 10.1080/13547500601162482] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Osteoarthritis (OA) is one of the most common age-related chronic disorders of articular cartilage, joints and bone tissue. Diagnosis of OA commonly depends on clinical and radiographic findings. However, changes in cartilage associated with the early stage of OA cannot be detected using radiographs, because significant cartilage degeneration must occur before radiographic findings show alterations of the appearance of cartilage. To identify new biomarkers of OA, we analysed gene expression profiles of synovium from 43 patients with OA, ten patients with rheumatoid arthritis (RA), and eight non-OA/non-RA patients using a novel cDNA microarray chip. We identified 21 genes with simultaneous significant differences in expression between OA and non-OA/non-RA groups and between OA and RA groups. Linear discriminant analysis showed that the three groups could be well separated using those 21 genes. Statistical analysis also revealed that several of the 21 genes were associated with disease progression and clinical presentation. The graphical modelling method indicated that some of the 21 genes are significantly associated with a particular clinical presentation, suggesting biological relationships among those genes. This is the first report of the use of cDNA microarray technology to create large-scale gene expression profiles differentially expressed in situ in OA synovium of the knee joint.
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Affiliation(s)
- H Kato
- Department of Orthopedic Surgery, Mie University School of Medicine, Tsu-City, Mie, Japan
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Abstract
We report a 72-year-old woman with a type-1 intra-osseous ganglion in the proximal humerus, extending to the bone surface. We conducted a systemic review of intra-osseous ganglion cases in Japan to identify clinical features and pathogenesis of this condition. The anatomical distribution between intra-osseous ganglia without a communicating soft tissue ganglion (type 1) and those with (type 2) is different. The origins of intra-osseous ganglia vary and depend on their anatomical location. They can arise from within the bone or in the adjacent soft tissue, and can progress to a type-2 lesion in either an outside-in or inside-out fashion.
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Affiliation(s)
- T Nishimura
- Department of Orthopaedic Surgery, Mie University Faculty of Medicine, Mie, Japan.
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Mitani K, Fujioka M, Uchida A, Kataoka H. Analysis of abietic acid and dehydroabietic acid in food samples by in-tube solid-phase microextraction coupled with liquid chromatography-mass spectrometry. J Chromatogr A 2007; 1146:61-6. [PMID: 17306277 DOI: 10.1016/j.chroma.2007.01.118] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2006] [Revised: 01/20/2007] [Accepted: 01/25/2007] [Indexed: 11/30/2022]
Abstract
A simple and sensitive method for the determination of abietic acid and dehydroabietic acid in food samples was developed using a fully automated method consisting of in-tube solid-phase microextraction (SPME) coupled with liquid chromatography-mass spectrometry (LC/MS). These compounds were separated within 5min by HPLC using an ODS-3 column and 5mM ammonium formate/acetonitrile (10/90, v/v). Electrospray ionization conditions in the negative ion mode were optimized for MS detection of abietic acid and dehydroabietic acid. The optimum in-tube SPME conditions were 20draw/eject cycles of 40microL of sample using a Supel Q PLOT capillary column as an extraction device. The extracted compounds were easily desorbed from the capillary by passage of the mobile phase, and no carryover was observed. Using the in-tube SPME LC/MS method, good linearity of the calibration curve (r>0.9998) was obtained in the concentration range from 0 to 50ng/mL, and the detection limits (S/N=3) of abietic acid and dehydroabietic acid were 2.9 and 2.1pg/mL, respectively. The in-tube SPME method showed above 75-fold greater sensitivity than the direct injection method (5microL injection). This method was applied successfully to analysis of food samples without interference peaks. The recoveries of abietic acid and dehydroabietic acid spiked into liquid samples were above 79%, and the relative standard deviations were below 6.6%. These compounds were detected at ng/mL or ng/g levels in various liquid or solid food samples contacted with paper.
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Affiliation(s)
- K Mitani
- School of Pharmacy, Shujitsu University, Nishigawara, Okayama 703-8516, Japan
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Ogawa Y, Hossain RZ, Ogawa T, Yamakawa K, Yonou H, Oshiro Y, Hokama S, Morozumi M, Uchida A, Sugaya K. Vitamin B6 deficiency augments endogenous oxalogenesis after intravenous l-hydroxyproline loading in rats. ACTA ACUST UNITED AC 2007; 35:15-21. [PMID: 17200872 DOI: 10.1007/s00240-006-0076-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2006] [Accepted: 12/01/2006] [Indexed: 10/23/2022]
Abstract
The effects of an intravenous hydroxyproline load on endogenous oxalogenesis were compared in rats fed a standard diet or a vitamin B6-deficient diet. Twelve male Wistar rats were randomized to two groups and were fed either a standard diet (control group) or a vitamin B6-deficient diet for 3 weeks. Then the animals were intravenously administered 100 mg (762.6 micromol)/ml hydroxyproline. In the control group, infusion of hydroxyproline increased the 5-h urinary oxalate and glycolate excretion above baseline to 0.27% (2.02 +/- 1.11 micromol) and 0.32% (2.43 +/- 1.60 micromol) of the administered dose (mol/mol), while it was respectively 2.01% (15.24 +/- 2.13 micromol) and 0.00% (-0.02 +/- 0.19 micromol) of the dose in the vitamin B6-deficient group. Therefore, vitamin B6 deficiency augmented endogenous synthesis of oxalate from hydroxyproline by 7.56-fold (15.24/2.02) compared with that in the control group. Urinary citrate excretion was significantly lower at baseline and all other times in the vitamin B6-deficient group compared with the control group. In conclusions, L-hydroxyproline loading augmented endogenous oxalogenesis in the vitamin B6-deficient group without causing hyperglycolic aciduria, and also led to significant hypocitraturia. These findings suggest that hydroxyproline is not metabolized to oxalate via glycolate, but rather via the 4-hydroxyglutamate to glyoxylate pathway (usually requiring vitamin B6-dependent enzymes) even in the presence of vitamin B6 deficiency.
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Affiliation(s)
- Y Ogawa
- Department of Urology, University of the Ryukyus, 207 Uehara, Nishihara, Okinawa, 903-0215, Japan.
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Nishimura A, Hasegawa M, Sudo A, Uchida A. Osteonecrosis of the femoral head caused by bone marrow blockage: a case report. J Orthop Surg (Hong Kong) 2006; 14:330-2. [PMID: 17200539 DOI: 10.1177/230949900601400319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Interruption of the blood flow may occur in intra-osseous arteries within the femoral head. We report a 72-year-old woman who developed osteonecrosis of the femoral head 11 months after surgery involving massive cementing of a segmental distal femoral rotating hinge prosthesis to treat nonunion of the distal femur. The bone cement filled the cavity up to the femoral neck and the superolateral portion of the femoral head, blocking the bone marrow.
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Affiliation(s)
- A Nishimura
- Department of Orthopaedic Surgery, Mie University Graduate School of Medicine, Tsu City, Mie, Japan
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Abstract
Transient osteoporosis of the hip is a disorder characterised by pain, and associated with temporary osteopaenia. Although osteopaenia is the essence of the condition, data do not exist about the local bone density of the femoral neck if no medication is administered. We describe three patients who were treated with limitation of weight-bearing only. Repeated bone mineral density measurements were obtained, and that at the femoral neck was lowest two months after the onset of the condition. The mean reduction in bone mineral density when compared with an age-matched control group was 13% (3% to 24%). Spontaneous recovery was observed in all patients.
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Affiliation(s)
- R Niimi
- Department of Orthopaedic Surgery, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu City, Mie 514-8507, Japan
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Abstract
A modular layered acetabular component (metal-polyethylene-ceramic) was developed in Japan for use in alumina ceramic-on-ceramic total hip replacement. Between May 1999 and July 2000, we performed 35 alumina ceramic-on-ceramic total hip replacements in 30 consecutive patients, using this layered component and evaluated the clinical and radiological results over a mean follow-up of 5.8 years (5 to 6.5). A total of six hips underwent revision, one for infection, two for dislocation with loosening of the acetabular component, two for alumina liner fractures and one for component dissociation with pelvic osteolysis. There were no fractures of the ceramic heads, and no loosening of the femoral or acetabular component in the unrevised hips was seen at final follow-up. Osteolysis was not observed in any of the unrevised hips. The survivorship analysis at six years after surgery was 83%. The layered acetabular component in our experience, has poor durability because of unexpected mechanical failures including alumina liner fracture and component dissociation.
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Affiliation(s)
- M Hasegawa
- Department of Orthopaedic Surgery, Mie University Graduate, School of Medicine, 2-174, Edobashi, Tsu City, Mie 514-8507, Japan.
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Wada H, Kobayashi T, Abe Y, Hatada T, Yamada N, Sudo A, Uchida A, Nobori T. Elevated levels of soluble fibrin or D-dimer indicate high risk of thrombosis. J Thromb Haemost 2006; 4:1253-8. [PMID: 16706968 DOI: 10.1111/j.1538-7836.2006.01942.x] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
BACKGROUND Fibrin-related markers such as soluble fibrin (SF) and D-dimer are considered useful for the diagnosis of thrombosis. However, the evidence for diagnosis of thrombosis by fibrin-related markers is not well-established. OBJECTIVE To evaluate the cutoff values of D-dimer and SF in the diagnosis of thrombosis. PATIENTS AND METHODS Plasma concentrations of SF and D-dimer were measured in 784 inpatients suspected of having thrombosis between 1 August 2003 and 31 December 2004, and then correlated with thrombosis. RESULTS AND CONCLUSIONS Plasma concentrations of D-dimer and SF were significantly higher in patients with disseminated intravascular coagulation (DIC), deep vein thrombosis (DVT) and cerebral thrombosis, compared with those in patients without thrombosis. When cutoff values of > 3.0 microg mL(-1) for D-dimer and > 6.0 microg mL(-1) for SF were used for the diagnosis, more than 50% of patients (with the exception of liver transplant patients and postoperative patients) had thrombosis. Receiver operating characteristic analysis showed that SF was more useful than D-dimer for the diagnosis of thrombosis (i.e. DVT and DIC). The cutoff value of D-dimer (7.87 microg mL(-1)) was the same for DVT and DIC, while that of SF was slightly lower for DVT (7.05 microg mL(-1)) than for DIC (8.60 microg mL(-1)). Our findings suggest that high levels of plasma fibrin-related markers reflect high risk for thrombosis.
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Affiliation(s)
- H Wada
- Department of Molecular and Laboratory Medicine, Mie University Graduate School of Medicine, Edobashi, Tsu, Japan.
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Kasai Y, Kawakita E, Uchida A. Clinical profile of long-term survivors of breast or thyroid cancer with metastatic spinal tumours. Int Orthop 2006; 31:171-5. [PMID: 16639592 PMCID: PMC2267556 DOI: 10.1007/s00264-006-0145-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2006] [Accepted: 03/21/2006] [Indexed: 10/24/2022]
Abstract
Patients with breast or thyroid cancer with metastatic spinal tumours are expected to survive relatively longer than patients with other cancers with metastatic spinal tumours. The purpose of this study was to determine the clinical characteristics of long-term survivors of breast or thyroid cancer with metastatic spinal tumours. We studied the clinical profile of long-term survivors by comparing the characteristics of nine patients who had survived for at least 5 years after a spinal operation with the characteristics of 16 patients who had not. Our results showed that the longer the time from the diagnosis of the primary cancer to the spinal operation, the longer patients with breast or thyroid cancer and metastatic spinal tumours would survive. Six of the eight patients (75.0%) who had undergone the spinal operation at least 5 years after the diagnosis of the primary cancer survived especially long. In conclusion, the duration from the diagnosis of the primary cancer to the spinal operation is very useful for predicting a prognosis in patients with breast or thyroid cancer and metastatic spinal tumours.
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Affiliation(s)
- Y Kasai
- Department of Orthopaedic Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan.
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Tsujii M, Hirata H, Yoshida T, Imanaka-Yoshida K, Morita A, Uchida A. Involvement of tenascin-C and PG-M/versican in flexor tenosynovial pathology of idiopathic carpal tunnel syndrome. Histol Histopathol 2006; 21:511-8. [PMID: 16493581 DOI: 10.14670/hh-21.511] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Increased intra-carpal-tunnel pressure due to swelling of the flexor tenosynovium is the most probable pathological mechanism of idiopathic carpal tunnel syndrome (CTS). To clarify the role of tenascin-C and PG-M/versican, which have often been found to be involved in tissue remodeling and vascular stenosis in the pathogenesis of CTS, we histologically and biochemically examined the production of extracellular matrix in the flexor tenosynovium from 40 idiopathic CTS patients. Tenascin-C was temporarily expressed in the vessel wall, synovial lining and fibrous tissue, with expression regulated differently in each tissue. Tenascin-C expression by vessels correlated with disease duration and appeared to be involved in vascular lesion pathology. Morphometric analysis showed that tenascin-C expression by small arteries is correlated with PG-M/versican expression in surrounding connective tissue. PG-M/versican was also present at the neointima of severely narrowed vessels. Although tenascin-C expression by synovial lining and connective tissue shows marked regional variation and seems inconsistent, in vitro examination suggested that tenascin-C production by these tissues is regulated in response to mechanical strain on the flexor tenosynovium.
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Affiliation(s)
- M Tsujii
- Department of Orthopaedic Surgery, Faculty of Medicine, Mie University, Tsu, Mie, Japan
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Horikawa K, Kasai Y, Yamakawa T, Sudo A, Uchida A. Prevalence of osteoarthritis, osteoporotic vertebral fractures, and spondylolisthesis among the elderly in a Japanese village. J Orthop Surg (Hong Kong) 2006; 14:9-12. [PMID: 16598079 DOI: 10.1177/230949900601400103] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
PURPOSE To study the prevalence of osteoarthritis, osteoporotic vertebral fractures, and spondylolisthesis among elderly residents of a Japanese village and to examine the correlation between radiographic evidence of abnormality and lower back pain. METHODS 205 men (mean age, 70.7 years) and 323 women (mean age, 70.5 years) in a Japanese village participated in this cross-sectional study. Plain lateral radiographs were taken from the lower thoracic spine to the sacral spine. They were evaluated by 3 independent orthopaedic surgeons for degree of osteoarthritis (using Weiner grading system) and the presence of osteoporotic vertebral fractures and spondylolisthesis. RESULTS The prevalence of osteoarthritis in elderly Japanese villagers was 38.3%, whereas that of osteoporotic vertebral fractures and spondylolisthesis was 17.8% and 8.9%, respectively. There was no significant difference in osteoarthritis between men and women, but osteoporotic vertebral fractures and spondylolisthesis were significantly more common in females (p<0.01). No significant correlation was observed between lower back pain and radiographic evidence of degenerative spinal disease. CONCLUSION The prevalence of spondylolisthesis in elderly Japanese was much lower than that in whites or African Americans. The prevalence of osteoarthritis or osteoporotic vertebral fractures was comparable with other English or US studies. Radiographic evidence of osteoarthritis, osteoporotic vertebral fractures, and spondylolisthesis is not necessarily associated with lower back pain.
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Affiliation(s)
- K Horikawa
- Department of Orthopaedic Surgery, Faculty of Medicine, Mie University, Mie, Japan
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Niimi R, Matsumine A, Kusuzaki K, Okamura A, Matsubara T, Uchida A, Fukutome K. Soft-tissue sarcoma mimicking large haematoma: a report of two cases and review of the literature. J Orthop Surg (Hong Kong) 2006; 14:90-5. [PMID: 16598096 DOI: 10.1177/230949900601400120] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We report on 2 patients with soft-tissue sarcomas mimicking large haematomas. Neither patient had a medical history of trauma or bleeding tendency. In a patient with a large leiomyosarcoma in the buttock, insufficient biopsy material from initial surgeries precluded a correct diagnosis. In the second patient with epithelioid sarcoma of the forearm, fasciotomy was repeatedly performed for compartment syndrome arising from the tumour. It is important to reconfirm prior trauma and investigate the clinical course and images of patients with an unusual history of haematoma in the extremities. The possibility of a malignant tumour should be suspected, and repeated biopsies should be performed if necessary.
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Affiliation(s)
- R Niimi
- Department of Orthopaedic Surgery, Mie University Faculty of Medicine, Mie, Japan
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Matsumine A, Kusuzaki K, Hirata H, Fukutome K, Maeda M, Uchida A. Intraneural metastasis of a synovial sarcoma to a peripheral nerve. J Bone Joint Surg Br 2005. [PMID: 16260679 DOI: 10.1302/0301-620x.8711.16522] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
We describe a case of intraneural metastasis of a synovial sarcoma, the first published case of a metastasis of a soft-tissue sarcoma to a peripheral nerve.
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Affiliation(s)
- A Matsumine
- Department of Orthopaedic Surgery, Mie University School of Medicine, 2-174 Edobashi, Tsu-city, Mie 514-8507, Japan.
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Abstract
We describe a case of intraneural metastasis of a synovial sarcoma, the first published case of a metastasis of a soft-tissue sarcoma to a peripheral nerve.
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Affiliation(s)
- A Matsumine
- Department of Orthopaedic Surgery, Mie University School of Medicine, 2-174 Edobashi, Tsu-city, Mie 514-8507, Japan.
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Ohtsuki T, Satoh H, Ohshima S, Uchida A. Structural studies of water-soluble chlorophyll protein from Chenopodium album. Acta Crystallogr A 2005. [DOI: 10.1107/s0108767305088598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Uchida A, Sakurai R, Hattori T, Yamaura M. Epimerization of α-amino nitriles to single stereoisomers in the solid state. Acta Crystallogr A 2005. [DOI: 10.1107/s0108767305087520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Horigome D, Hara H, Satoh H, Nakagawa A, Uchida A. A novel chlorophyll-binding mode of water-soluble chlorophyll protein (WSCP). Acta Crystallogr A 2005. [DOI: 10.1107/s0108767305088495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Abstract
OBJECTIVES To investigate the incidence and pattern of injuries, relative risks, and factors affecting incidence among elite motorcycle competitors in Japan. METHODS A total of 117 elite motorcycle competitors including 36 road racers, 60 motocross racers, and 21 trial bike riders completed a questionnaire about injuries. RESULTS Sixty major injuries (25 in road racing, 32 in motocross, and three in trial bike riding) were reported. The most common injuries were fractures (45), followed by ligament injuries (8), dislocations (5), and soft tissue injuries (2). The overall injury rate was 22.4 per 1000 hours, and the death rate was zero. There was no significant correlation between risk of injury and age, experience, or accumulated competition points. CONCLUSIONS Injury rates in competitions such as road racing and motocross are high, and therefore additional safety measures are needed to protect competitors from injury.
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Affiliation(s)
- Y Tomida
- Department of Orthopaedic Surgery, Suzuka Kaisei General Hospital, Tsu City, Japan
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Uchida A, Tabata M, Matsuo K, Ogino A, Fujiwara Y, Hotta K, Shinagawa K, Kiura K, Ueoka H, Tanimoto M. Incidence of acute promyelocytic leukemia during gefitinib treatment for advanced non-small cell lung cancer. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.7189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- A. Uchida
- Okayama Univ Grad Sch of Med and Dent, Okayama, Japan; Okayama Univ Hosp, Okayama, Japan; Aichi Cancer Ctr Research Inst, Nagoya, Japan
| | - M. Tabata
- Okayama Univ Grad Sch of Med and Dent, Okayama, Japan; Okayama Univ Hosp, Okayama, Japan; Aichi Cancer Ctr Research Inst, Nagoya, Japan
| | - K. Matsuo
- Okayama Univ Grad Sch of Med and Dent, Okayama, Japan; Okayama Univ Hosp, Okayama, Japan; Aichi Cancer Ctr Research Inst, Nagoya, Japan
| | - A. Ogino
- Okayama Univ Grad Sch of Med and Dent, Okayama, Japan; Okayama Univ Hosp, Okayama, Japan; Aichi Cancer Ctr Research Inst, Nagoya, Japan
| | - Y. Fujiwara
- Okayama Univ Grad Sch of Med and Dent, Okayama, Japan; Okayama Univ Hosp, Okayama, Japan; Aichi Cancer Ctr Research Inst, Nagoya, Japan
| | - K. Hotta
- Okayama Univ Grad Sch of Med and Dent, Okayama, Japan; Okayama Univ Hosp, Okayama, Japan; Aichi Cancer Ctr Research Inst, Nagoya, Japan
| | - K. Shinagawa
- Okayama Univ Grad Sch of Med and Dent, Okayama, Japan; Okayama Univ Hosp, Okayama, Japan; Aichi Cancer Ctr Research Inst, Nagoya, Japan
| | - K. Kiura
- Okayama Univ Grad Sch of Med and Dent, Okayama, Japan; Okayama Univ Hosp, Okayama, Japan; Aichi Cancer Ctr Research Inst, Nagoya, Japan
| | - H. Ueoka
- Okayama Univ Grad Sch of Med and Dent, Okayama, Japan; Okayama Univ Hosp, Okayama, Japan; Aichi Cancer Ctr Research Inst, Nagoya, Japan
| | - M. Tanimoto
- Okayama Univ Grad Sch of Med and Dent, Okayama, Japan; Okayama Univ Hosp, Okayama, Japan; Aichi Cancer Ctr Research Inst, Nagoya, Japan
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Abstract
PURPOSE To assess the vascularity of the femoral head and determine how it is related to the destruction of the arthritic hip joint. The process of destructive arthropathy in arthritic hip joints is variable. Some patients with osteoarthritis of the hip have rapidly progressive destructive changes resulting in the disappearance of the femoral head. METHOD Six femoral heads from patients diagnosed with rapidly destructive arthropathy and 6 femoral heads from patients with secondary osteoarthritis caused by acetabular dysplasia were analysed to reveal the association between blood capillaries and osteoclasts. The von Willebrand Factor immunostaining and counterstaining with Mayer's haematoxylin were used to label the microvessels and osteoclasts in formalin-fixed, paraffin-embedded specimens of femoral heads. The numbers of immunostained microvessels and osteoclasts in selected regions were counted. RESULT The microvascular density of the bone surfaces of rapidly progressive arthritic hips was hypervascular. Osteoclasts were also found in increased numbers on the bone surfaces of rapidly progressive arthritic hips. The higher microvascular density coincided with extensive bone destruction and with the increased osteoclast count. CONCLUSION These findings suggested that hypervascularity of the granulation in the femoral head may be associated with bone and joint destruction.
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Affiliation(s)
- T Yamakawa
- Department of Orthopedic Surgery, Mie University Faculty of Medicine, Mie University Hospital, Tsu, Mie, Japan.
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