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Bandres-Ciga S, Saez-Atienzar S, Kim JJ, Makarious MB, Faghri F, Diez-Fairen M, Iwaki H, Leonard H, Botia J, Ryten M, Hernandez D, Gibbs JR, Ding J, Gan-Or Z, Noyce A, Pihlstrom L, Torkamani A, Soltis AR, Dalgard CL, Scholz SW, Traynor BJ, Ehrlich D, Scherzer CR, Bookman M, Cookson M, Blauwendraat C, Nalls MA, Singleton AB. Correction to: Large‑scale pathway specific polygenic risk and transcriptomic community network analysis identifies novel functional pathways in Parkinson disease. Acta Neuropathol 2021; 142:223-224. [PMID: 33944973 PMCID: PMC8496667 DOI: 10.1007/s00401-021-02309-z] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
A correction to this paper has been published: https://doi.org/10.1007/s00401-021-02309-z
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Affiliation(s)
- S Bandres-Ciga
- Molecular Genetics Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA
| | - S Saez-Atienzar
- Neuromuscular Diseases Research Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA
| | - J J Kim
- Molecular Genetics Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA
| | - M B Makarious
- Molecular Genetics Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA
| | - F Faghri
- Molecular Genetics Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA
| | - M Diez-Fairen
- Fundació Docència i Recerca Mútua Terrassa and Movement Disorders Unit, Department of Neurology, University Hospital Mútua Terrassa, Terrassa, 08221, Barcelona, Spain
| | - H Iwaki
- Molecular Genetics Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA
| | - H Leonard
- Molecular Genetics Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA
| | - J Botia
- Departamento de Ingeniería de la Información y las Comunicaciones, Universidad de Murcia, Murcia, Spain
- Department of Molecular Neuroscience, UCL, Institute of Neurology, London, UK
| | - M Ryten
- Department of Neurodegenerative Disease, University College London (UCL) Institute of Neurology, London, UK
| | - D Hernandez
- Molecular Genetics Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA
| | - J R Gibbs
- Molecular Genetics Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA
| | - J Ding
- Molecular Genetics Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Z Gan-Or
- Department of Neurology and Neurosurgery, McGill University, Montréal, QC, Canada
- Montreal Neurological Institute, McGill University, Montréal, QC, Canada
- Department of Human Genetics, McGill University, Montréal, QC, Canada
| | - A Noyce
- Preventive Neurology Unit, Wolfson Institute of Preventive Medicine, Queen Mary University of London and Department of Neurology, Royal London Hospital, London, UK
| | - L Pihlstrom
- Department of Neurology, Oslo University Hospital, Oslo, Norway
| | - A Torkamani
- The Scripps Research Institute, La Jolla, CA, 92037, USA
| | - A R Soltis
- The American Genome Center, Collaborative Health Initiative Research Program, Uniformed Services University of the Health Sciences, Bethesda, MA, USA
| | - C L Dalgard
- Department of Anatomy, Physiology & Genetics, Uniformed Services University of the Health Sciences, Bethesda, MA, USA
- The American Genome Center, Collaborative Health Initiative Research Program, Uniformed Services University of the Health Sciences, Bethesda, MA, USA
| | - S W Scholz
- Neurodegenerative Diseases Research Unit, National Institute of Neurological Disorders and Stroke, Bethesda, MD, 20892, USA
- Department of Neurology, Johns Hopkins University Medical Center, Baltimore, MD, 21287, USA
| | - B J Traynor
- Neuromuscular Diseases Research Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA
- Department of Neurology, Johns Hopkins University Medical Center, Baltimore, MD, 21287, USA
| | - D Ehrlich
- Parkinson's Disease Clinic, Office of the Clinical Director, National Institute of Neurological, Disorders and Stroke, National Institutes of Health, Bethesda, MD, 20892, USA
| | - C R Scherzer
- Center for Advanced Parkinson Research, Harvard Medical School, Brigham and Women's Hospital, Boston, MA, 0115, USA
| | - M Bookman
- Verily Life Sciences, South San Francisco, CA, USA
| | - M Cookson
- Cell Biology and Gene Expression Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MA, USA
| | - C Blauwendraat
- Molecular Genetics Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA
| | - M A Nalls
- Molecular Genetics Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA
- Data Tecnica International, Glen Echo, MD, 20812, USA
| | - A B Singleton
- Molecular Genetics Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA.
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Nishikawa N, Iwaki H, Shiraishi T, Mukai Y, Takahashi Y, Hattori N. Female, Aging, Low ratio of DCI or lower body weight increases AUC4hr of levodopa in patients with Parkinson's disease. Parkinsonism Relat Disord 2020. [DOI: 10.1016/j.parkreldis.2020.06.225] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Bandres-Ciga S, Saez-Atienzar S, Kim JJ, Makarious MB, Faghri F, Diez-Fairen M, Iwaki H, Leonard H, Botia J, Ryten M, Hernandez D, Gibbs JR, Ding J, Gan-Or Z, Noyce A, Pihlstrom L, Torkamani A, Soltis AR, Dalgard CL, Scholz SW, Traynor BJ, Ehrlich D, Scherzer CR, Bookman M, Cookson M, Blauwendraat C, Nalls MA, Singleton AB. Large-scale pathway specific polygenic risk and transcriptomic community network analysis identifies novel functional pathways in Parkinson disease. Acta Neuropathol 2020; 140:341-358. [PMID: 32601912 PMCID: PMC8096770 DOI: 10.1007/s00401-020-02181-3] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 06/07/2020] [Accepted: 06/14/2020] [Indexed: 01/21/2023]
Abstract
Polygenic inheritance plays a central role in Parkinson disease (PD). A priority in elucidating PD etiology lies in defining the biological basis of genetic risk. Unraveling how risk leads to disruption will yield disease-modifying therapeutic targets that may be effective. Here, we utilized a high-throughput and hypothesis-free approach to determine biological processes underlying PD using the largest currently available cohorts of genetic and gene expression data from International Parkinson's Disease Genetics Consortium (IPDGC) and the Accelerating Medicines Partnership-Parkinson's disease initiative (AMP-PD), among other sources. We applied large-scale gene-set specific polygenic risk score (PRS) analyses to assess the role of common variation on PD risk focusing on publicly annotated gene sets representative of curated pathways. We nominated specific molecular sub-processes underlying protein misfolding and aggregation, post-translational protein modification, immune response, membrane and intracellular trafficking, lipid and vitamin metabolism, synaptic transmission, endosomal-lysosomal dysfunction, chromatin remodeling and apoptosis mediated by caspases among the main contributors to PD etiology. We assessed the impact of rare variation on PD risk in an independent cohort of whole-genome sequencing data and found evidence for a burden of rare damaging alleles in a range of processes, including neuronal transmission-related pathways and immune response. We explored enrichment linked to expression cell specificity patterns using single-cell gene expression data and demonstrated a significant risk pattern for dopaminergic neurons, serotonergic neurons, hypothalamic GABAergic neurons, and neural progenitors. Subsequently, we created a novel way of building de novo pathways by constructing a network expression community map using transcriptomic data derived from the blood of PD patients, which revealed functional enrichment in inflammatory signaling pathways, cell death machinery related processes, and dysregulation of mitochondrial homeostasis. Our analyses highlight several specific promising pathways and genes for functional prioritization and provide a cellular context in which such work should be done.
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Affiliation(s)
- S Bandres-Ciga
- Molecular Genetics Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA
| | - S Saez-Atienzar
- Neuromuscular Diseases Research Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA
| | - J J Kim
- Molecular Genetics Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA
| | - M B Makarious
- Molecular Genetics Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA
| | - F Faghri
- Molecular Genetics Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA
| | - M Diez-Fairen
- Fundació Docència i Recerca Mútua Terrassa and Movement Disorders Unit, Department of Neurology, University Hospital Mútua Terrassa, Terrassa, 08221, Barcelona, Spain
| | - H Iwaki
- Molecular Genetics Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA
| | - H Leonard
- Molecular Genetics Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA
| | - J Botia
- Departamento de Ingeniería de la Información y las Comunicaciones, Universidad de Murcia, Murcia, Spain
- Department of Molecular Neuroscience, UCL, Institute of Neurology, London, UK
| | - M Ryten
- Department of Neurodegenerative Disease, University College London (UCL) Institute of Neurology, London, UK
| | - D Hernandez
- Molecular Genetics Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA
| | - J R Gibbs
- Molecular Genetics Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA
| | - J Ding
- Molecular Genetics Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Z Gan-Or
- Department of Neurology and Neurosurgery, McGill University, Montréal, QC, Canada
- Montreal Neurological Institute, McGill University, Montréal, QC, Canada
- Department of Human Genetics, McGill University, Montréal, QC, Canada
| | - A Noyce
- Preventive Neurology Unit, Wolfson Institute of Preventive Medicine, Queen Mary University of London and Department of Neurology, Royal London Hospital, London, UK
| | - L Pihlstrom
- Department of Neurology, Oslo University Hospital, Oslo, Norway
| | - A Torkamani
- The Scripps Research Institute, La Jolla, CA, 92037, USA
| | - A R Soltis
- The American Genome Center, Collaborative Health Initiative Research Program, Uniformed Services University of the Health Sciences, Bethesda, MA, USA
| | - C L Dalgard
- Department of Anatomy, Physiology & Genetics, Uniformed Services University of the Health Sciences, Bethesda, MA, USA
- The American Genome Center, Collaborative Health Initiative Research Program, Uniformed Services University of the Health Sciences, Bethesda, MA, USA
| | - S W Scholz
- Neurodegenerative Diseases Research Unit, National Institute of Neurological Disorders and Stroke, Bethesda, MD, 20892, USA
- Department of Neurology, Johns Hopkins University Medical Center, Baltimore, MD, 21287, USA
| | - B J Traynor
- Neuromuscular Diseases Research Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA
- Department of Neurology, Johns Hopkins University Medical Center, Baltimore, MD, 21287, USA
| | - D Ehrlich
- Parkinson's Disease Clinic, Office of the Clinical Director, National Institute of Neurological, Disorders and Stroke, National Institutes of Health, Bethesda, MD, 20892, USA
| | - C R Scherzer
- Center for Advanced Parkinson Research, Harvard Medical School, Brigham and Women's Hospital, Boston, MA, 0115, USA
| | - M Bookman
- Verily Life Sciences, South San Francisco, CA, USA
| | - M Cookson
- Cell Biology and Gene Expression Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MA, USA
| | - C Blauwendraat
- Molecular Genetics Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA
| | - M A Nalls
- Molecular Genetics Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA
- Data Tecnica International, Glen Echo, MD, 20812, USA
| | - A B Singleton
- Molecular Genetics Section, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, 20892, USA.
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Nomoto M, Iwaki H, Tagawa M, Iwasaki K. Comparison of zonisamide with non-levodopa, anti-Parkinson’s disease drugs in the incidence of Parkinson’s disease-relevant symptoms. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.809] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Iwaki H, Kannnou M, Kubo M, Miyaue N, Tada S, Rina A, Tsujii T, Yabe H, Nishikawa N, Nagai M, Nomoto M. The association between Parkinson's disease and the serum levels of nutritional factors: A cross-sectional study with patient and spouse pairs. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1004] [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: 11/30/2022]
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Sato Y, Iki M, Fujita Y, Tamaki J, Kouda K, Yura A, Moon JS, Winzenrieth R, Iwaki H, Ishizuka R, Amano N, Tomioka K, Okamoto N, Kurumatani N. Greater milk intake is associated with lower bone turnover, higher bone density, and higher bone microarchitecture index in a population of elderly Japanese men with relatively low dietary calcium intake: Fujiwara-kyo Osteoporosis Risk in Men (FORMEN) Study. Osteoporos Int 2015; 26:1585-94. [PMID: 25627112 DOI: 10.1007/s00198-015-3032-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [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: 06/05/2014] [Accepted: 01/06/2015] [Indexed: 11/30/2022]
Abstract
UNLABELLED The effects of milk intake on bone health are not clear in elderly Asian men with low dietary calcium intake. This study showed that greater milk intake is associated with lower bone turnover, higher bone density, and higher bone microarchitecture index in community-dwelling elderly Japanese men. INTRODUCTION The consumption of milk or dairy products is widely recommended for maintaining bone health regardless of gender or age. However, little evidence exists on the beneficial effects of milk intake on bone health in elderly Japanese men characterized with relatively low dietary calcium intake. Here we examined whether or not greater milk intake was associated with lower bone turnover, higher bone density, and stronger bone microarchitecture in community-dwelling elderly Japanese men. METHODS Interviews were conducted to obtain information on medical history and lifestyle, including the amount of habitual milk intake, nutrient intake calculations based on a 1-week food diary, and measurements of areal bone mineral density (aBMD) at the lumbar spine (LS), total hip (TH), and femoral neck (FN) by dual-energy x-ray absorptiometry (DXA), trabecular bone score (TBS) using DXA images at LS, and biochemical markers of bone turnover in sera. Participants with a history of diseases or medications that affect bone metabolism, or with missing data, were excluded from the analysis. RESULTS The median intake of milk in the 1479 participants (mean age, 73.0 ± 5.1 years) was one glass of milk per day. Bone turnover markers showed a decreasing trend (p < 0.05) and aBMD at TH (p = 0.0019) and FN (p = 0.0057) and TBS (p = 0.0017) showed increasing trends with greater milk intake after adjusting for demographic and behavioral confounding factors. This association was attenuated after further adjusting for nutrient intake, in particular, calcium intake. CONCLUSIONS Greater milk intake was associated with lower bone turnover, higher aBMD, and higher TBS in community-dwelling elderly Japanese men.
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Affiliation(s)
- Y Sato
- Department of Health and Nutrition, Faculty of Human Life, Jin-ai University, 3-1-1 Ohdecho, Echizen, Fukui, 915-8586, Japan
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Choudhury ME, Sugimoto K, Kubo M, Iwaki H, Tsujii T, Kyaw WT, Nishikawa N, Nagai M, Tanaka J, Nomoto M. Zonisamide up-regulated the mRNAs encoding astrocytic anti-oxidative and neurotrophic factors. Eur J Pharmacol 2012; 689:72-80. [PMID: 22659113 DOI: 10.1016/j.ejphar.2012.05.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2012] [Revised: 04/27/2012] [Accepted: 05/15/2012] [Indexed: 01/28/2023]
Abstract
Zonisamide has been proven as an effective drug for the recovery of degenerating dopaminergic neurons in the animal models of Parkinson's disease. However, several lines of evidence have questioned the neuroprotective capacity of zonisamide in animal models of Parkinson's disease. Although it suppresses dopaminergic neurodegeneration in animal models, the cellular and molecular mechanisms underlying the effectiveness of zonisamide are not fully understood. The current study demonstrates the effects of zonisamide on astrocyte cultures and two 6-hydroxydopamine-induced models of Parkinson's disease. Using primary astrocyte cultures, we showed that zonisamide up-regulated the expression of mRNA encoding mesencephalic astrocyte-derived neurotrophic factor, vascular endothelial growth factor, proliferating cell nuclear antigen, metallothionein-2, copper/zinc superoxide dismutase, and manganese superoxide dismutase. Similar responses to zonisamide were found in substantia nigra where the rats were pre-treated with 6-hydroxydopamine. Notably, pharmacological inhibition of 6-hydroxydopamine-induced toxicity by zonisamide pre-treatment was also confirmed using rat mesencephalic organotypic slice cultures of substantia nigra. In addition to this, zonisamide post-treatment also attenuated the nigral tyrosine hydroxylase-positive neuronal loss induced by 6-hydroxydopamine. Taken together, these studies demonstrate that zonisamide protected dopamine neurons in two Parkinson's disease models through a novel mechanism, namely increasing the expression of some important astrocyte-mediated neurotrophic and anti-oxidative factors.
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Affiliation(s)
- M E Choudhury
- Department of Therapeutic Medicine (Clinical Pharmacology and Neurology), Ehime University Graduate School of Medicine, Shitsukawa, Toon-Shi, Ehime 791-0295, Japan
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Takeda A, Takada S, Ando M, Itagaki K, Tamano H, Suzuki M, Iwaki H, Oku N. Impairment of recognition memory and hippocampal long-term potentiation after acute exposure to clioquinol. Neuroscience 2010; 171:443-50. [DOI: 10.1016/j.neuroscience.2010.09.017] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2010] [Revised: 09/06/2010] [Accepted: 09/09/2010] [Indexed: 10/19/2022]
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Minoda Y, Ikebuchi M, Kobayashi A, Iwaki H, Inori F, Nakamura H. A cemented mobile-bearing total knee replacement prevents periprosthetic loss of bone mineral density around the femoral component. ACTA ACUST UNITED AC 2010; 92:794-8. [DOI: 10.1302/0301-620x.92b6.23159] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [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
Bone mineral density (BMD) around the femoral component has been reported to decrease after total knee replacement (TKR) because of stress shielding. Our aim was to determine whether a cemented mobile-bearing component reduced the post-operative loss of BMD. In our study 28 knees receiving a cemented fixed-bearing TKR were matched with 28 receiving a cemented mobile-bearing TKR. They underwent dual-energy x-ray absorptiometry, pre-operatively and at three weeks and at three, six, 12, 18 and 24 months post-operatively. The patients were not taking medication to improve the BMD. The pre-operative differences in the BMD of the femoral neck, wrist, lumbar spine and knee in the two groups were not significant. The BMD of the femur decreased postoperatively in the fixed-bearing group, but not the mobile-bearing group. The difference in the post-operative change in the BMD in the two groups was statistically significant (p < 0.05) at 18 and 24 months. Our findings show that a cemented mobile-bearing TKR has a favourable effect on the BMD of the distal femur after TKR in the short term. Further study is required to determine the long-term effects.
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Affiliation(s)
- Y. Minoda
- Department of Orthopaedic Surgery Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi Abeno-ku, Osaka 545-8585, Japan
| | - M. Ikebuchi
- Department of Orthopaedic Surgery Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi Abeno-ku, Osaka 545-8585, Japan
| | - A. Kobayashi
- Department of Orthopaedic Surgery Osaka General Medical Centre, 3-1-56 Mandai-higashi Sumiyoshi-ku, Osaka 558-8558, Japan
| | - H. Iwaki
- Department of Orthopaedic Surgery Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi Abeno-ku, Osaka 545-8585, Japan
| | - F. Inori
- Department of Orthopaedic Surgery Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi Abeno-ku, Osaka 545-8585, Japan
| | - H. Nakamura
- Department of Orthopaedic Surgery Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi Abeno-ku, Osaka 545-8585, Japan
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Fukunaga K, Kobayashi A, Minoda Y, Iwaki H, Hashimoto Y, Takaoka K. The incidence of the patellar clunk syndrome in a recently designed mobile-bearing posteriorly stabilised total knee replacement. ACTA ACUST UNITED AC 2009; 91:463-8. [PMID: 19336805 DOI: 10.1302/0301-620x.91b4.21494] [Citation(s) in RCA: 61] [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] [Indexed: 12/23/2022]
Abstract
The patellar clunk syndrome describes painful catching, grinding or jumping of the patella when the knee moves from a flexed to an extended position after total knee replacement (TKR). The posterior stabilised TKR had been noted to have a higher incidence of this problem. Mobile-bearing posteriorly stabilised TKRs have been introduced to improve patellar tracking and related problems by a mechanism of self-alignment. We evaluated the patellar clunk syndrome in 113 knees in 93 patients with such a TKR at a mean follow-up of 2.3 years (2.0 to 3.2). The syndrome was identified in 15 knees (13.3%). Logistic regression analysis showed that the absolute value of the post-operative angle of patellar tilt was significantly associated with the occurrence of patellar clunk (p = 0.025). Patellar tracking should be carefully checked during surgery.
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Affiliation(s)
- K Fukunaga
- Department of Orthopaedic Surgery, Osaka City University Medical School, 1-4-3 Asahi-machi, Abeno-ku, Osaka, 545-8585, Japan
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Yamada K, Griesemer A, Ishikawa Y, Hirakata A, Moran S, Schule P, Iwaki H, Arn S, Shimizu A, Sachs D. AVERAGE SURVIVAL GREATER THAN 50 DAYS WITH EVIDENCE FOR BABOON THYMOPOIESIS IN PORCINE THYMUS IN BABOON RECIPIENTS OF LIFE-SUPPORTING GALT-KO PIG THYMOKIDNEYS. Transplantation 2008. [DOI: 10.1097/01.tp.0000332202.96824.b2] [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: 11/25/2022]
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Kataoka A, Yuasa T, Kageyama S, Tsuchiya N, Habuchi T, Iwaki H, Narita M, Okada Y, Yoshiki T. Diagnosis of Bone Metastasis in Men with Prostate Cancer by Measurement of Serum ICTP in Combination with Alkali Phosphatase and Prostate-specific Antigen. Clin Oncol (R Coll Radiol) 2006; 18:480-4. [PMID: 16909972 DOI: 10.1016/j.clon.2006.02.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
AIMS Carboxy-terminal telopeptide of type I collagen (ICTP) is a parameter of bone absorption, and has recently been introduced to monitor bone metastases. The aim of this retrospective study was to investigate the potential of ICTP as a candidate serum marker of bone metastasis in prostate cancer. MATERIALS AND METHODS Serum markers in 155 men pathologically diagnosed with prostate cancer were measured. The serum levels of ICTP, prostate-specific antigen (PSA), and alkali phosphatase (ALP) were compared to assess the extent of disease (EOD) scores from bone scans and then analysed statistically. RESULTS The serum ICTP levels were not well correlated with the EOD scores in the total group of men, men newly diagnosed with prostate cancer, or men previously diagnosed with prostate cancer who were followed up. The sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) of ICTP (cut-off value, 5.0 ng/ ml) of the men newly diagnosed with prostate cancer were 78.6%, 88.0%, 78.6%, and 88.0%, respectively. In these men, the specificity and PPV of ALP (cut-off value, 335 IU/l) were 100%, whereas the sensitivity and NPV of PSA (cut-off value, 40 ng/ml) were 100% in this study. The serum levels of ICTP in the men with low ALP (< 335 IU/l) and high PSA (> or = 40 ng/ ml) clearly separated the men with or without bone metastasis, as judged by bone scans. CONCLUSION We found that the ICTP is not a superior serum marker for bone metastases compared with ALP or PSA. Our study suggests, however, that the ICTP measurement is useful in a certain subset of men with the combination of PSA and ALP in distinguishing men with bone metastasis from those without.
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Affiliation(s)
- A Kataoka
- Department of Urology, Shiga University of Medical Science, Otsu, Japan
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Aoyama S, Iwaki H, Amagasa T, Kino K, Okada N, Kishimoto S. Pigmented villonodular synovitis of the temporomandibular joint: differential diagnosis and case report. Br J Oral Maxillofac Surg 2004; 42:51-4. [PMID: 14706302 DOI: 10.1016/s0266-4356(03)00193-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [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: 10/26/2022]
Abstract
Pigmented villonodular synovitis of the temporomandibular joint (TMJ) is rare. We present a patient in whom the lesion had invaded the infratemporal fossa and destroyed the mandibular condyle.
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Affiliation(s)
- S Aoyama
- Maxillofacial Surgery, Maxillofacial Reconstruction and Function, Division of Maxillofacial and Neck Reconstruction, Graduate School, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo 113-8549, Japan.
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14
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Iwaki H, Kuraoka S, Tatebe S. [Coronary subclavian steal syndrome; report of a case]. Kyobu Geka 2003; 56:235-8. [PMID: 12649917] [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] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
A 64-year-old man was admitted to our hospital with chief complaint of chest discomfort. He received coronary artery bypass grafting utilizing the in situ left internal thoracic artery 10 years ago. Coronary and left subclavian artery angiogram revealed coronary subclavian steal syndrome and 90% stenosis in the proximal left subclavin artery. Ultrasonography of neck vessels demonstrated 75% stenosis in the bifurcation of left carotid artery. We performed axilloaxillary artery bypass grafting to avoid brain ischemia. Myocardial thallium scintigraphy on dipyridamole testing after axilloaxillary artery bypass grafting could not detect myocardial ischemia. Axilloaxillary artery bypass grafting was effective for coronary subclavian steal syndrome.
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Affiliation(s)
- H Iwaki
- Department of Cardiovascular Surgery, Mito Saiseikai General Hospital, Mito, Japan
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15
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Iwaki H, Kuraoka S, Tatebe S. [Hemolytic anemia due to aortic valve regurgitation after mitral valve replacement]. Kyobu Geka 2003; 56:124-8. [PMID: 12635322] [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] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
A 50-year-old woman was admitted to our hospital because of heart failure (NYHA III) due to mitral valve regurgitation (MR) with pulmonary hypertension (PH) and tricuspid valve regurgitation (TR). She had a history of chronic renal failure undergoing dialysis (peritoneal dialysis, homodialysis) since 1996. Cardiac catheterization and ultrasonic cardiography showed severe MR (Sellers III), severe TR and PH (mean pressure 33 mmHg). So we performed mitral valve replacement and tricuspid annuloplasty (DeVega). Frequent blood transfusion was needed because severe hemolytic anemia appeared after operation. Ultrasonic cardiography demonstrated moderate aortic valve regurgitation (AR) with no paravalvular prosthetic leakage. We diagnosed hemolytic anemia due to AR. We performed aortic valve replacement. Hemolytic anemia improved soon after second operation. We investigated the mechanical process of the AR. She had a very short subaortic curtain (5.9 mm) compared with the average (8.7 +/- 2.1 mm: mean +/- SD) of cardiac patients. We think that we must be very careful with suture to short subaortic curtain. In addition measurement of subaortic curtain before operation is very useful.
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Affiliation(s)
- H Iwaki
- Department of Cardiovascular Surgery, Mito Saiseikai General Hospital, Mito, Japan
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Iwaki H, Scott G, Freeman MAR. The natural history and significance of radiolucent lines at a cemented femoral interface. J Bone Joint Surg Br 2002; 84:550-5. [PMID: 12043777 DOI: 10.1302/0301-620x.84b4.11931] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/18/2023]
Abstract
We studied 185 total hip replacements and related the identification of radiolucent lines (RLLs) at two years to the later development of lytic lesions and loosening. Linear polyethylene wear was also measured. RLLs appeared in 34 hips at a mean of 2.0 years after operation, and lytic lesions in ten hips at 5.7 years. Of 151 THRs without RLLs there was neither rapid migration nor loosening and only one developed a possible lytic lesion. Of 23 hips with non-progressive RLLs there was neither rapid migration nor loosening, but six developed a lytic lesion. By contrast, 11 THRs with progressive RLLs migrated rapidly and seven developed a lytic lesion. Six THRs with progressive RLLs failed. The wear rates were the same in all groups, although limited numbers were available for study. If the surgeon achieves secure initial fixation as shown by slow or no migration and no RLLs during the first two years, it is likely that no lytic lesions will develop by five years or aseptic loosening by ten years. If an imperfect, but adequate, interface is achieved, as shown by slow migration and non-progressive RLLs lytic lesions adjacent to the RLLs may develop by five years, but aseptic loosening will be unlikely at ten. Insecure initial fixation, as shown by more rapid migration and progressive RLLs at two years, is likely to lead to the formation of lytic lesions at five years and loosening at ten. The outcome after THR is therefore determined at the initial operation and may be predicted at two years. The presence of lytic lesions reflects soft tissue at the interface as shown by the RLLs which accompany and promote loosening but, in our study, did not cause it.
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Affiliation(s)
- H Iwaki
- Bone and Joint Research Unit, Royal London Hospital, England, UK
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Hisataki T, Takahashi A, Taguchi K, Shimizu T, Suzuki K, Takatsuka K, Iwaki H. Sarcomatoid transitional cell carcinoma originating from a duplicated renal pelvis. Int J Urol 2001; 8:704-6. [PMID: 11851772 DOI: 10.1046/j.1442-2042.2001.00396.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [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: 11/20/2022]
Abstract
A case of sarcomatoid transitional cell carcinoma of the renal pelvis is reported. It was distinguished from carcinosarcoma by immunohistochemical study. The tumor was difficult to distinguish from a renal parenchymal tumor in imaging studies because it originated from a duplicated renal pelvis.
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Affiliation(s)
- T Hisataki
- Department of Urology, Sunagawa City Medical Center, Sunagawa, Japan.
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Abstract
We present the case of a patient with atrial septal defect and severe pulmonary hypertension with pulmonary artery peak pressure greater than 110 mm Hg. Open lung biopsy was done prior to the corrective operation, and pathological findings in the small pulmonary arteries included "musculoelastosis" and complete occlusion of 70% of these small arteries and arterioles. The atrial septal defect was closed, and long-term oral prostacyclin therapy was initiated. Pulmonary artery peak pressure decreased to 65 mm Hg 2 years after the operation. This case demonstrates that in a patient with 70% complete occlusion of small pulmonary arteries and arterioles resulting from "musculoelastosis," not only is surgical intervention possible but also pulmonary artery pressure decreases in the long term after operation.
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Affiliation(s)
- H Yamauchi
- Department of Surgery II, Nippon Medical School, Tokyo, Japan. yamauchi_hitoshi/
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20
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Abstract
Results of total hip arthroplasties with a modified cementing technique using hydroxyapatite were evaluated. Femoral and acetabular components were inserted with cement after hydroxyapatite granules (phi = 100-300 microm). The study group comprised 268 hips in 232 patients. The diagnosis was osteoarthritis in 197 patients. After a mean follow-up of 10.3 years, 5 patients died and 30 patients were lost to follow-up, leaving 218 hips (197 patients; mean age, 58.2 years) for evaluation. Three hips were revised because aseptic (1) and septic (2) loosening of acetabular components. Six other sockets were defined as radiologically loose, and no femoral component was loose. Osteolysis was identified in 2 femora and 0 acetabula. The overall loosening rate was 3.2% for acetabular components and 0% for femoral components. These results show that the loosening rate of cemented total hip arthroplasty components, especially the acetabulum, is reduced markedly with this modified cementing technique.
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Affiliation(s)
- H Oonishi
- Artificial Joint Section and Biomaterial Research Laboratory, Osaka-Minami National Hospital, Kawachnagano City, Osaka, Japan
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21
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Abstract
We report a case of inflammatory pseudotumor of the kidney. A 73-year-old man presenting with general malaise and minimal grade fever visited a medical department in our hospital. Computerized tomography incidentally revealed a tumor, 3.5 cm in diameter, in the lower pole of the left kidney, and he was referred to our outpatient department. Selective left renal arteriography disclosed an avascular mass on the affected site. Left radical nephrectomy was performed under the diagnosis of avascular renal cell carcinoma. Histological examination demonstrated a tumor composed of spindle-shaped fibroblastic cells infiltrated by variable numbers of plasma cells, small lymphocytes and histiocytes. The pathologic diagnosis was renal inflammatory pseudotumor. Fourteen previously reported cases of this tumor have reviewed in the literature.
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Affiliation(s)
- H Iwaki
- Department of Urology, Kitano Hospital
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Ogura I, Amagasa T, Iwaki H, Kijima T, Kurabayashi T, Yoshimasu H. Clinicopathological study of carcinomas of the lip and the mucosa of the upper and lower lips. Int J Clin Oncol 2001; 6:123-7. [PMID: 11706780 DOI: 10.1007/pl00012093] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
BACKGROUND Lip carcinomas are rare oral tumors, and there have been few reports of lip carcinoma in Japan. METHODS Of 914 patients with oral carcinomas treated between January 1980 and December 1998, 12 (1.3%) had lip carcinoma and 5 (0.5%) had lip mucosal carcinoma. We investigated the clinicopathological features of these 17 patients. RESULTS Of the 12 patients with carcinoma of the lip, 10 had squamous cell carcinomas (9, external lower lip; 1 commissures) and 2 had mucoepidermoid carcinomas (external upper lip). Of the 5 patients with lip mucosal carcinoma, 3 had squamous cell carcinomas (2, mucosa of the lower lip; 1, mucosa of the upper lip), 1 had mucoepidermoid carcinoma (mucosa of the lower lip), and 1 had acinic cell carcinoma (mucosa of the lower lip). Of the 12 patients with lip carcinoma, 9 were classified as stage I, 2 as stage II, and 1 as stage III; all 5 of the patients with lip mucosal carcinoma were stage I. Five patients with lip carcinoma were treated by resection, 5 by a combination of resection and reconstruction, and 2 by radiotherapy alone. All patients with lip mucosal carcinoma were treated by resection. After the initial therapy, 3 patients without neck dissection had regional recurrences and received delayed neck dissection, and 2 died with neck regional recurrence after dissection. The 5-year cumulative survival rates of the patients with lip carcinoma and those with lip mucosal carcinoma were 82.5% and 80.0%, respectively. CONCLUSION We suggest that early-stage carcinomas of the lip and of the mucosa of the upper and lower lips are frequent, and we found that the outcome of these patients was excellent. However, an aggressive therapeutic approach to the lip carcinoma patient with cervical metastasis appears warranted, in an attempt to improve locoregional control and ultimate survival.
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Affiliation(s)
- I Ogura
- Graduate School, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8549, Japan
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Uzawa N, Akanuma D, Negishi A, Iwaki H, Uzawa Y, Amagasa T, Yoshida MA. Homozygous deletions on the short arm of chromosome 3 in human oral squamous cell carcinomas. Oral Oncol 2001; 37:351-6. [PMID: 11337267 DOI: 10.1016/s1368-8375(00)00095-6] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Recent cytogenetic and allelic deletion analyses have demonstrated that deletions on the short arm of chromosome 3 (3p) are frequently found in various cancers, including oral squamous cell carcinomas (OSCCs). This suggests that one or more tumor suppressor gene(s) for these malignancies might be located on 3p. In the present study, to further define the region(s) on 3p that harbor putative tumor suppressor gene(s) for OSCCs, we have investigated the existence of homozygous deletions (HDs) at 34 loci on 3p, in 14 OSCC cell lines. HDs were detected within the FRA3B region at 3p14.2 in only two cell lines (HSC-4 and TSU). Recently, the human fragile histidine triad (FHIT) gene was isolated from this region, abnormalities of which have been found at high frequencies in several types of human cancers. We also examined the expression of the FHIT gene, using reverse transcription-polymerase chain reaction (RT-PCR) and exon-specific PCR, in the two OSCC cell lines which showed HDs at 3p14.2. There was no detectable expression of exon 5, which was the first protein-coding exon of FHIT gene, in HSC-4 cells, indicating that this region was homozygously deleted in this cell line. On the other hand, HD in the TSU cells did not affect the coding region of the FHIT gene, and the wild-type transcript was detected by RT-PCR. Therefore, several candidate tumor suppressor genes, including the FHIT gene, may reside in these homozygously deleted regions. To our knowledge, this is the first report of HDs on 3p in OSCCs.
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Affiliation(s)
- N Uzawa
- Maxillofacial Surgery, Maxillofacial Reconstruction and Function, Division of Maxillofacial and Neck Reconstruction, Graduate School, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, 113-8549, Tokyo, Japan.
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Higuchi I, Suehara M, Iwaki H, Nakagawa M, Arimura K, Osame M. Collagen VI deficiency in Ullrich's disease. Ann Neurol 2001; 49:544. [PMID: 11310637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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Kajita Y, Shimizu Y, Takao N, Iwaki H, Yamauchi T. [Seminal vesicle cyst with ipsilateral renal agenesis: a case report]. Hinyokika Kiyo 2001; 47:203-6. [PMID: 11329965] [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] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
A 26-year-old man was referred to our hospital for further evaluation of a cystic lesion in the pelvis. He was completely asymptomatic, although he experienced gross hematuria 10 months before his visit. Drip infusion pyelography (DIP) and abdominal computerized tomography (CT) showed a cystic structure behind the bladder and absence of the left kidney. Transrectal ultrasonography (TRUS) suggested left ejaculatory duct obstruction and seminal vesicle deformity. On cystoscopy a large bulging mass under the left side of the bladder was seen. The left half of the trigone and left ureteral orifice were absent. Vasovesiculography demonstrated dilated and tortuous left seminal vesicle. Three days after this procedure, the patient suffered left epididymitis. It did not respond rapidly to antibiotic therapy, so percutaneous drainage of the cyst was performed. He has been completely free of symptoms and no seminal vesicle cysts have been detected on TRUS at five months follow-up.
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Affiliation(s)
- Y Kajita
- Department of Urology, Kitano Hospital
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Iwaki H, Kajita Y, Shimizu Y, Yamauchi T. [Predictive value of prostate specific antigen density in the detection of prostate cancer in patients with elevated prostate specific antigen levels and normal digital rectal findings or stage A prostate cancer]. Hinyokika Kiyo 2001; 47:169-74. [PMID: 11329957] [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] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
We compared the usefulness of PSA and PSA density (PSAD) in diagnosing prostate cancer in 102 men who had a PSA value higher than 4.0 ng/ml and normal digital rectal examination and who had undergone transrectal ultrasonography-guided systematic sextant biopsies of the prostate between August 1996 and October 1999. In addition, for a group of 53 patients who underwent retropubic simple prostatectomy, PSA, PSAD and PSA transition zone (PSA-TZ) examination results for those with stage A prostate cancer were compared with the results for those with benign prostatic hyperplasia (BPH). Of the former 102 men, 20 (19.6%) had prostate cancer. There was no significant difference in mean PSA level between patients with negative and those with positive biopsy results (mean 9.3 and 11.8, respectively, p = 0.295), but the mean PSAD of patients with positive biopsy results was significantly higher than that of those with negative results (mean 0.55 and 0.29, respectively, p = 0.0007). Of the 53 men who underwent retropubic simple prostatectomy, 10 (18.9%) were diagnosed with stage A prostate cancer. There was no significant difference in mean PSA, PSAD and PSA-TZ examination results between patients with BPH and those with stage A prostate cancer. For all 102 patients and for 71 patients with PSA levels of 4.1-10.0 ng/ml, a PSAD cutoff value of 0.1 reduced the number of biopsies 15.7% (16 of 102 cases), and 22.5% (16 of 71 cases), respectively. These results suggest that by measurement of PSAD some patients with benign disease could be spared a biopsy which would have been performed based on PSA results alone.
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Affiliation(s)
- H Iwaki
- Department of Urology, Kitano Hospital
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Abstract
BACKGROUND The left atrial transport function recovers slowly over several months after the maze procedure (Maze), but remains at a low level even during the long-term postoperative period. Because the Maze leaves an insufficient left atrial transport function, patients may still be prone to thromboembolism after the Maze. The radial incision approach (Radial) has been shown to preserve greater atrial transport function than does the Maze in the early postoperative period. METHODS To examine the serial change in the atrial transport function after the Radial, out of 32 patients who underwent the Radial, 15 patients were assessed by transthoracic Doppler echocardiography 1, 3, 6, and 12 months after surgery. The atrial filling fraction and peak A/E velocity ratio were determined from the flow-velocity spectra across the mitral and tricuspid valves. The incidence of thromboembolic events was examined in 21 patients who were followed for more than 3 months after the Radial. The data were compared with data obtained from 13 patients after (41 +/- 6 months) the Maze III procedure. RESULTS The left atrial transport function after the Radial increased within 3 months to a significantly greater level than did that after the Maze in the longterm. The atrial filling fraction was 28.2% +/- 7.9% at 3 months after the Radial and 15.1% +/- 4.0% at 41 months after the Maze (p < 0.01). The peak A/E ratio was 0.52 +/- 0.18 at 3 months after the Radial and 0.25 +/- 0.07 at 41 months after the Maze (p < 0.01). This increased atrial transport function was maintained for an extended period after the Radial. There were no thromboembolic events in any of the patients after the Radial or Maze, irrespective of postoperative anticoagulant therapy. CONCLUSIONS The Radial approach prevents thromboembolism by restoring sufficient atrial transport function more effectively and faster than does the Maze.
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Affiliation(s)
- Y Ishii
- Department of Cardiothoracic Surgery, Nippon Medical School, Tokyo, Japan
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Yamauchi H, Fujii M, Iwaki H, Ishii Y, Saji Y, Maruyama Y, Yamashita H, Uchikoba Y, Fukazawa R, Okubo T, Ogawa S, Tanaka S. Surgical treatment of coarctation complex in neonates and infants. J NIPPON MED SCH 2000; 67:455-8. [PMID: 11116241 DOI: 10.1272/jnms.67.455] [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] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND There remains controversy regarding the appropriate surgical treatment of coarctation of the aorta associated with intracardiac anomalies in neonates and infants. Furthermore, the relative benefits of one versus two-stage repair, and subclavian flap aortoplasty versus end-to-end anastomosis for some of these lesions, remain controversial. The purpose of this paper is to review our experience with two-stage repair using subclavian flap aortoplasty and to seek an appropriate procedure. METHODS AND RESULT From June 1996 to November 1999, thirteen patients underwent subclavian flap aortoplasty in our department. The age range was 16 to 101 days (mean 52 days), and the body weight range was 1.9 to 4.5 kg (mean 3.0 kg). Anatomic diagnosis was coarctation with ventricular septal defect (six patients), double outlet right ventricle (two patients), atrioventricular canal defect (one patient), tricuspid atresia (two patients), mitral atresia (one patient), and single atrium and subaortic stenosis (one patient). There was one hospital death in our series due to the progression of pulmonary hypertension 3 months after the operation. The mean follow up for remaining twelve patients was 28 months (range 7 approximately 48 months). There was one reoperation for recurrent coarctation. Three patients underwent pulmonary artery plasty in a second operation because of right pulmonary artery stenosis. We performed the definitive operation for six patients with coarctation with ventricular septal defect and two patients with double outlet right ventricle, and we performed a bidirectional cavopulmonary shunt for four univentricular hearts who are candidates for the Fontan operation. Two patients required Damus-Kaye-Stansel procedure to release restrictive bulboventricular foramen. Three patients underwent a modified Fontan operation after these palliations. In our series, the intraoperative mortality rate for subclavian flap aortoplasty was 0% and the post operative mortality rate was 7.7% (1/13). Ten patients underwent the final operation successfully, and further two patients are considered good candidates for the final operation. The overall mortality was 7.7% (1/13). CONCLUSION Two-stage repair appears to offer a good prognosis for neonates and infants with a coarctation complex. Subclavian flap aortoplasty showed the lowest rate of restenosis. However, late mortality may be associated with the progression of pulmonary vascular disease and the presence of associated severe cardiac anomalies. Although Fontan candidates need staged operations, if biventricular repair is feasible, one-stage repair would be a reasonable procedure considering the progression of the pulmonary vascular disease and the distortion of the pulmonary artery due to pulmonary artery banding. It would appear to improve the quality of life of those children if a one-stage operation can be performed with reasonable risk and good midterm outcome.
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Affiliation(s)
- H Yamauchi
- Department of Surgery II, Division of Cardiovascular Surgery, Nippon Medical School, Tokyo, Japan. yamauchi_hitoshi/
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Hasegawa Y, Nakai Y, Tokuyama T, Iwaki H. Purification and characterization of cyclohexanone 1,2-monooxygenase from Exophiala jeanselmei strain KUFI-6N. Biosci Biotechnol Biochem 2000; 64:2696-8. [PMID: 11210139 DOI: 10.1271/bbb.64.2696] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [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: 11/08/2022]
Abstract
Baeyer-Villiger cyclohexanone 1,2-monooxygenase (CHMO) was purified 17.1-fold from cell extracts of the fungus Exophiala jeanselmei grown on cyclohexanol to electrophoretically homogeneity by serial chromatographies. The molecular mass of the native enzyme was approximately 74 kDa by gel filtration and SDS-PAGE. Some enzymic characterizations were studied. The NH2-terminal amino acid residues were Ala-Lys-Ser-Leu-Asp-Val-Leu-Ile-Val-Gly-Ala-Gly-Phe-Gly-Gly-Ile-Tyr-Gln-Leu-, with similarity to the bacterial CHMOs of FAD-binding and NADPH-dependent type Baeyer-Villiger monooxygenases.
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Affiliation(s)
- Y Hasegawa
- Department of Biotechnology, Faculty of Engineering and High Technology Research Center, Kansai University, Suita, Japan
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Hill PF, Vedi V, Williams A, Iwaki H, Pinskerova V, Freeman MAR. Tibiofemoral movement 2: the loaded and unloaded living knee studied by MRI. ACTA ACUST UNITED AC 2000. [DOI: 10.1302/0301-620x.82b8.0821196] [Citation(s) in RCA: 90] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
In 13 unloaded living knees we confirmed the findings previously obtained in the unloaded cadaver knee during flexion and external rotation/internal rotation using MRI. In seven loaded living knees with the subjects squatting, the relative tibiofemoral movements were similar to those in the unloaded knee except that the medial femoral condyle tended to move about 4 mm forwards with flexion. Four of the seven loaded knees were studied during flexion in external and internal rotation. As predicted, flexion (squatting) with the tibia in external rotation suppressed the internal rotation of the tibia which had been observed during unloaded flexion.
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Watanabe A, Sasaki A, Iwaki H, Nakashima S, Abe T. [A case of mediastinal non seminomatous germ cell tumor successfully treated with chemotherapy and curative surgery]. Kyobu Geka 2000; 53:1052-4. [PMID: 11079315] [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] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
A 15-year-old male was admitted to our hospital because of left lateral chest pain. Chest XP and CT scan revealed a huge anterior mediastinal mass (13 x 8 x 12 cm). The serum AFP level was raised (8,089 ng/ml). Examination of a percutaneous biopsy of the tumor suggested non-seminomatous germ cell carcinoma. After three courses of chemotherapy with CDDP, Bleomycin and VP-16, the mass reduced in size and the serum AFP level decreased to the normal range. The tumor was completely removed. The postoperative course was uneventful and he has had no recurrence for 10 months following the operation. AFP is a very useful parameter for deciding the timing for an operation.
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Affiliation(s)
- A Watanabe
- 2nd Department of Surgery, Sapporo Medical University School of Medicine, Japan
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Iwaki H, Pinskerova V, Freeman MA. Tibiofemoral movement 1: the shapes and relative movements of the femur and tibia in the unloaded cadaver knee. J Bone Joint Surg Br 2000; 82:1189-95. [PMID: 11132285 DOI: 10.1302/0301-620x.82b8.10717] [Citation(s) in RCA: 294] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
In six unloaded cadaver knees we used MRI to determine the shapes of the articular surfaces and their relative movements. These were confirmed by dissection. Medially, the femoral condyle in sagittal section is composed of the arcs of two circles and that of the tibia of two angled flats. The anterior facets articulate in extension. At about 20 degrees the femur 'rocks' to articulate through the posterior facets. The medial femoral condyle does not move anteroposteriorly with flexion to 110 degrees. Laterally, the femoral condyle is composed entirely, or almost entirely, of a single circular facet similar in radius and arc to the posterior medial facet. The tibia is roughly flat. The femur tends to roll backwards with flexion. The combination during flexion of no anteroposterior movement medially (i.e., sliding) and backward rolling (combined with sliding) laterally equates to internal rotation of the tibia around a medial axis with flexion. About 5 degrees of this rotation may be obligatory from 0 degrees to 10 degrees flexion; thereafter little rotation occurs to at least 45 degrees. Total rotation at 110 degrees is about 20 degrees, most if not all of which can be suppressed by applying external rotation to the tibia at 90 degrees.
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Affiliation(s)
- H Iwaki
- Charles University, Prague, Czech Republic
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Iwaki H, Pinskerova V, Freeman MAR. Tibiofemoral movement 1: the shapes and relative movements of the femur and tibia in the unloaded cadaver knee. ACTA ACUST UNITED AC 2000. [DOI: 10.1302/0301-620x.82b8.0821189] [Citation(s) in RCA: 192] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
In six unloaded cadaver knees we used MRI to determine the shapes of the articular surfaces and their relative movements. These were confirmed by dissection. Medially, the femoral condyle in sagittal section is composed of the arcs of two circles and that of the tibia of two angled flats. The anterior facets articulate in extension. At about 20° the femur ‘rocks’ to articulate through the posterior facets. The medial femoral condyle does not move anteroposteriorly with flexion to 110°. Laterally, the femoral condyle is composed entirely, or almost entirely, of a single circular facet similar in radius and arc to the posterior medial facet. The tibia is roughly flat. The femur tends to roll backwards with flexion. The combination during flexion of no antero-posterior movement medially (i.e., sliding) and backward rolling (combined with sliding) laterally equates to internal rotation of the tibia around a medial axis with flexion. About 5° of this rotation may be obligatory from 0° to 10° flexion; thereafter little rotation occurs to at least 45°. Total rotation at 110° is about 20°, most if not all of which can be suppressed by applying external rotation to the tibia at 90°.
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Hill PF, Vedi V, Williams A, Iwaki H, Pinskerova V, Freeman MA. Tibiofemoral movement 2: the loaded and unloaded living knee studied by MRI. J Bone Joint Surg Br 2000; 82:1196-8. [PMID: 11132286 DOI: 10.1302/0301-620x.82b8.10716] [Citation(s) in RCA: 187] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
In 13 unloaded living knees we confirmed the findings previously obtained in the unloaded cadaver knee during flexion and external rotation/internal rotation using MRI. In seven loaded living knees with the subjects squatting, the relative tibiofemoral movements were similar to those in the unloaded knee except that the medial femoral condyle tended to move about 4 mm forwards with flexion. Four of the seven loaded knees were studied during flexion in external and internal rotation. As predicted, flexion (squatting) with the tibia in external rotation suppressed the internal rotation of the tibia which had been observed during unloaded flexion.
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Oonishi H, Kadoya Y, Iwaki H, Kin N. Hydroxyapatite granules interposed at bone-cement interface in total hip replacements: histological study of retrieved specimens. J Biomed Mater Res 2000; 53:174-80. [PMID: 10713564 DOI: 10.1002/(sici)1097-4636(2000)53:2<174::aid-jbm7>3.0.co;2-o] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The effect of hydroxyapatite (HA) granules interposed between bone and polymethylmethacrylate (PMMA) bone cement in total hip replacement was histologically evaluated. The technique consisted of smearing 2-5 g of HA granules (straight phi = 100-300 microm) onto the bone surface just before cementing. Four specimens containing well-fixed bone-cement interface were retrieved at 1, 2, 6, and 10 years postoperatively and examined with back-scattered electron microscopy and light microscopy. The majority of HA granules were incorporated into remodeled trabeculae, and highly convoluted bone-cement interface was maintained up to 10 years. The presence of active remodeling in the adjacent bone was observed. There were no significant inflammatory or foreign body reactions against interposed HA granules. In one specimen retrieved from a patient with rheumatoid arthritis, bone formation around HA granules was limited after 1 year. These results have provided histological evidence for the significantly reduced incidence of radiolucent lines in total hip replacement with this cementing technique, reported elsewhere.
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Affiliation(s)
- H Oonishi
- Joint Section and Biomaterial Research Laboratory, Osaka-Minami National Hospital, 2-1 Kidohigashi-Machi, Kawachnagano City, Osaka 586-8521 Japan
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Hasegawa Y, Muraki T, Tokuyama T, Iwaki H, Tatsuno M, Lau PC. A novel degradative pathway of 2-nitrobenzoate via 3-hydroxyanthranilate in Pseudomonas fluorescens strain KU-7. FEMS Microbiol Lett 2000; 190:185-90. [PMID: 11034277 DOI: 10.1111/j.1574-6968.2000.tb09284.x] [Citation(s) in RCA: 40] [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] [Indexed: 11/28/2022] Open
Abstract
A bacterial strain KU-7, identified as a Pseudomonas fluorescens by 16S rDNA sequencing, was one of the 12 new isolates that are able to grow on 2-nitrobenzoate as a sole source of carbon, nitrogen, and energy. Resting cells of KU-7 were found to accumulate ammonia in the medium indicating that degradation of 2-NBA proceeds through a reductive route. Metabolite analyses by thin layer chromatography and high pressure liquid chromatography indicated that 3-hydroxyanthranilate is an intermediate of 2-nitrobenzoate metabolism in KU-7 cells. This offers an alternative route to 2-nitrobenzoate metabolism since anthranilate (2-aminobenzoate) or catechol were detected as intermediates in other bacteria. Crude extracts of KU-7 cells converted 2-nitrobenzoate to 3-hydroxyanthranilate with oxidation of 2 mol of NADPH. Ring cleavage of 3-hydroxyanthranilate produced a transient yellow product, identified as 2-amino-3-carboxymuconic 6-semialdehyde, that has a maximum absorbance at 360 nm. The initial enzymes of the 2-nitrobenzoate degradation pathway were found to be inducible since succinate-grown cells produced very low enzyme activities. A pathway for 2-nitrobenzoate degradation in KU-7 was proposed.
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Affiliation(s)
- Y Hasegawa
- Department of Biotechnology, Faculty of Engineering and High Technology Research Center, Kansai University, Osaka, Japan.
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Abstract
Unlike the situation at the hip, controversy continues as to the shape of the bones in the knee (for example, are the femoral condyles helical in sagittal section?) and as to the way in which the femur moves on the tibia (for example, does the femur roll-back during flexion?). Although the replaced knee is unlikely to achieve normal kinematics, it seems desirable to understand how far it departs from normal. A knowledge of the normal is also important in the management of ligament injuries. Thus it is desirable to resolve these controversies. We have studied the shape of the bones and the way in which they move in the normal cadaveric knee using MRI as a first step to developing an MRI protocol for establishing the kinematic behaviour of the knee in the clinical setting. Our results have been confirmed in normal volunteers using Open Access and Interventional MRI. The latter enables the knee to be imaged whilst the subject is weight-bearing.
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Affiliation(s)
- V Pinskerova
- Bone & Joint Research Unit, London Hospital Medical College
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Ohashi H, Kobayashi A, Kadoya Y, Yamano Y, Oonishi H, Iwaki H. Effect of particles and interface conditions on fibrous tissue interposition between bone and implant. A particle challenge model in rabbit. J Mater Sci Mater Med 2000; 11:255-259. [PMID: 15348040 DOI: 10.1023/a:1008936830622] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Interposed fibrous tissue at bone-implant interfaces was quantitatively measured in the presence or absence of polyethylene (PE) or alumina particles. Three different conditions of the interface were designed by implanting a pre-polymerized polymethylmethacrylate (PMMA) plug (plug group), a doughy PMMA (injection group) and a hydroxyapatite (HA) plug (HA group) in the hole drilled at the intercondylar notch of rabbit knees. PE (170+/-18 microm) or alumina particles (88+/-26 microm) were repeatedly administered into the knee joints at one month intervals (six times). All animals were sacrificed seven months after the implantation. The bone-implant interface was histomorphometrically examined using undecalcified ground sections. In the plug group, the PE particles significantly increased the extent of the interposed fibrous tissue (p < 0.05), while the alumina particles showed no effect. In contrast, both particles showed no significant effects in the injection and the HA groups. These results indicate that both particle characteristics and conditions of the bone-implant interface affected particle-induced fibrous tissue interposition. The loose PMMA plug with PE particles induced the greatest amount of fibrous tissue interposition.
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Affiliation(s)
- H Ohashi
- Department of Orthopaedic Surgery, Osaka City University Medical School, 1-4-3 Asahimachi, Abeno-ku, Osaka 545-8585, Japan
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Yoshida T, Kajita Y, Iwaki H, Mori H, Yamauchi T. [Clinical studies on renal pelvic and ureteral tumors]. Hinyokika Kiyo 2000; 46:77-81. [PMID: 10769793] [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] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Clinical studies were performed on 35 patients with renal pelvic and/or ureteral cancer treated at Kitano Hospital between 1988 and 1997. They consisted of 17 renal pelvic cancers, 17 ureteral cancers and 1 renal pelvic and ureteral cancer. Twenty-nine patients were males and six were females, and their age ranged from 41 to 82 years old (average: 62.2). Histologically, 34 were transitional cell carcinoma and 1 was adenocarcinoma. Pathological stage of the tumor was pTa in 34.3%, pT1 in 14.3%, pT2 in 11.4%, pT3 in 37.1%, and pT4 in 2.9%, and grade of the tumor G1 in 11.8%, G2 in 58.8% and G3 in 29.4%. Eighteen patients (51%) had or developed bladder cancer, which preceded the diagnosis of cancer of upper urinary tract in 2 cases, coexisted in 4 cases and developed subsequently in 12 cases. The overall cause-specific survival rate was 91.3% at 1 year, 83.8% at 3 years and 79.4% at 5 years. Tumor stage, grade, lymph node metastasis and vascular invasion had impact on survival.
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Affiliation(s)
- T Yoshida
- Department of Urology, Kitano Hospital
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Abstract
N,N-Dimethylformamidase (DMFase) from Alcaligenes sp. strain KUFA-1, a bacterium that can grow on N,N-dimethylformamide (DMF) as the sole carbon and nitrogen source, catalyzes the first step of the DMF degradation. The DMFase gene dmfA1A2 was cloned in Escherichia coli, and its nucleotides were sequenced. The deduced amino acid sequence of the enzyme consisted of two alpha- and two beta-subunits with 132 and 762 amino acids, respectively, and had little similarity to sequences in protein databases, including various amidases. The protein may be a new kind of amidase. DMFase activity was detected in E. coli cells transformed with an expression plasmid of the cloned DMFase gene. The properties of recombinant DMFase purified from E. coli were identical to those of Alcaligenes DMFase.
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Affiliation(s)
- Y Hasegawa
- Department of Biotechnology, Faculty of Engineering, Kansai University, Osaka, Japan.
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Iwaki H, Mori H, Kajita Y, Yoshida T, Yamauchi T. [Giant psoas abscess with aggressive extension: report of a case]. Hinyokika Kiyo 1999; 45:835-7. [PMID: 10659417] [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] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
We report a case of giant psoas abscess with aggressive extension outside the muscles of the iliopsoas component. A 57-year-old man was admitted to our hospital, presenting with right flank pain and severe general malaise. He had been diabetic, but no treatment had been performed for diabetes. Leukocytosis, positive CRP and hyperglycemia were noted, but he was nearly afebrile on admission. Computerized tomography revealed a large multilocular mass in the right retroperitoneal space involving the ipsilateral psoas muscle. The diagnosis was not apparent until the 12th hospital day, when moderate grade fever was noted and brownish purulent fluid was obtained by percutaneous puncture of the mass. Staphylococcus aureus was isolated on culture. Antibiotic chemotherapy was started, and ultrasound-guided percutaneous drainage was then performed under the diagnosis of psoas abscess. At that time, the abscess was aggressively extending from the iliopsoas component into the pelvic floor, involving the rectus muscle, the gluteal muscles and formation of subucutaneous lesions. At 46 days after drainage, surgical resection of the abscess with removal of the adjucent tissue was performed because of persistent discharge of pus and multiple residual lesions. The postoperative course was uneventful, and there has been no recurrence. Many cases of psoas abscess have been reported in the Japanese literature. Prompt drainage, either percutaneously or surgically are required. Surgical resection of the abscess, with not only opening the cavity but also removal of the adjacent tissue, may be recommended in some cases, especially those diffuse or multilocular lesions.
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Affiliation(s)
- H Iwaki
- Department of Urology, Kitano Hospital
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Iwaki H, Hasegawa Y, Teraoka M, Tokuyama T, Bergeron H, Lau PC. Identification of a transcriptional activator (ChnR) and a 6-oxohexanoate dehydrogenase (ChnE) in the cyclohexanol catabolic pathway in Acinetobacter sp. Strain NCIMB 9871 and localization of the genes that encode them. Appl Environ Microbiol 1999; 65:5158-62. [PMID: 10543838 PMCID: PMC91696 DOI: 10.1128/aem.65.11.5158-5162.1999] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.0] [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: 11/20/2022] Open
Abstract
We identified chnR, a gene encoding an AraC-XylS type of transcriptional activator that regulates the expression of chnB, the structural gene for cyclohexanone monooxygenase (CHMO) in Acinetobacter sp. strain NCIMB 9871. The gene sequence of chnE, which encodes an NADP(+)-linked 6-oxohexanoate dehydrogenase, the enzyme catalyzing the fifth step of cyclohexanol degradation, was also determined. The gene arrangement is chnB-chnE-chnR. The predicted molecular masses of the three polypeptides were verified by radiolabeling by using the T7 expression system. Inducible expression of cloned chnB in Escherichia coli depended upon the presence of chnR. A transcriptional chnB::lacZ fusion experiment revealed that cyclohexanone induces chnB expression in E. coli, in which a 22-fold increase in activity was observed.
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Affiliation(s)
- H Iwaki
- Department of Biotechnology, Faculty of Engineering & High Technology Research Center, Kansai University, Suita, Osaka 564-8680, Japan
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Murakami E, Kado H, Masuda M, Shiokawa Y, Fukae K, Kanegae Y, Iwaki H, Shirota T, Yasui H. [Efficacy of intravenous administration of atrial natriuretic peptide after cardiac surgery in neonates and infants]. Kyobu Geka 1999; 52:822-5. [PMID: 10478542] [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] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
Intravenous infusion of alpha-human atrial natriuretic polypeptide (hANP) and furosemide was performed in 12 patients (4: TGA, 3: univentricular heart, 3: HLHS, 2: VSD) after cardiopulmonary bypass. Their mean age at the operation was 68 days (6 patients in neonate), the mean body weight was 3.3 kg. All patients were treated with nitroglycerin in dose of 2 micrograms/kg/min and chlorpromazine in dose of 2.8 micrograms/kg/min and catecholamine in mean dose of 6.5 micrograms/kg/min. The criteria of indication for hANP was poor effect of furosemide alone. The hANP was given for 6-144 hours in dose of 0.1-0.2 microgram/kg/min. With the hANP and furosemide infusion, urine volume increased from 85.0 +/- 14.2 ml/kg/day to 107.9 +/- 25.3 ml/kg/day (p < 0.05), whereas the systemic arterial pressure, the central venous pressure and the renal function were unchanged. We conclude that the combination of the hANP and the furosemide is very effective in neonates and infants.
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Affiliation(s)
- E Murakami
- Department of Cardiovascular Surgery, Fukuoka Children Hospital Medical Center, Japan
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Abstract
Peritoneal sarcomatosis was found in a 53-year-old male who had a history of resection of clear cell sarcoma (CCS) of the right wrist 7 years previously. Both the previous wrist tumor and the peritoneal disseminants consisted of small, spindle-shaped cells occasionally containing melanophages. Histologic features, histochemical demonstration of argentaffin granules, immunohistochemical reaction with HMB 45, and the demonstration of a chimeric transcript of EWS-ATF-1 established the diagnosis of CCS in the peritoneal tumors. As far as we are aware, this is the first case of a peritoneal sarcomatosis associated with CCS.
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Affiliation(s)
- Y Ohba
- Laboratory of Molecular and Cellular Pathology, Hokkaido University School of Medicine, Sapporo, Japan
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45
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Abstract
OBJECTIVES To report on a case of mucinous carcinoma of the prostate and discuss the clinical and histopathologic features of the mucin-producing carcinoma of the prostate from a review of published reports. METHODS Our case and 87 other previously reported cases were evaluated clinically and histologically. RESULTS We encountered a case of mucinous carcinoma of the prostate, Stage C, which was treated by radical prostatectomy. After reviewing it and the 87 other cases, we believe that these cases of mucin-producing carcinomas can be divided into three groups: 60 cases of mucinous carcinoma, 17 cases of primary signet-ring cell carcinoma, and 11 cases of mucinous carcinoma with signet-ring cells. Mucinous carcinoma is a variant of high-grade adenocarcinoma of the prostate, wherein there is a 77.8% rate of prostate-specific antigen elevation and a similar rate (77.8%) of response to endocrine therapy. Fifty percent of patients survived 3 years and 25%, 5 years. In contrast, primary signet-ring cell carcinoma conveys one of the worst prognoses among patients with prostate cancer. There are no reliable tumor markers, and there was no response to endocrine therapy. Patients with primary signet-ring cell carcinoma had a 27.3% 3-year survival rate; none survived to 5 years. The clinical features of mucinous carcinoma with signet-ring cells are very similar to primary signet-ring cell carcinoma; again, there was no response to endocrine therapy and the 3-year survival rate was 16.7%. CONCLUSIONS Although it has been suggested that mucinous carcinoma is a variant of high-grade adenocarcinoma of the prostate, signet-ring cell carcinoma and mucinous carcinoma with signet-ring cells are other variants of carcinoma that develop in the prostate, and their prognoses are very poor.
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Affiliation(s)
- S Saito
- Art Park Urology Hospital and Clinic, Department of Pathology, Sapporo Medical University, Japan
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Todo S, Kadoya Y, Moilanen T, Kobayashi A, Yamano Y, Iwaki H, Freeman MA. Anteroposterior and rotational movement of femur during knee flexion. Clin Orthop Relat Res 1999:162-70. [PMID: 10335295] [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: 01/31/2023]
Abstract
This study was designed to analyze anteroposterior and rotational movement of femoral condyles during knee flexion from 15 degrees to 90 degrees using magnetic resonance imaging. After a pilot study, scans were made in 10 healthy male Japanese volunteers. When centers of the circular profiles of posterior femoral condyles were used as reference points, the medial and lateral femoral condyles displaced posteriorly 1.9 +/- 0.8 mm and 2.3 +/- 0.5 mm, respectively (mean +/- standard error). Duplicate examinations on two separate occasions revealed the accuracy of this procedure was in the range of 1 to 2 mm. These results have confirmed that femoral rollback occurs in the unloaded normal knee during flexion from 15 degrees to 90 degrees, but its magnitude is small (2 mm). The results obtained in this in vivo measurement of anteroposterior movement of the femoral condyles have relevance for total knee replacement design.
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Affiliation(s)
- S Todo
- Department of Orthopaedic Surgery, Osaka City University Medical School, Japan
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Imoto Y, Kado H, Shiokawa Y, Kanegae Y, Fukae K, Iwaki H, Sonoda H, Minami K, Yasui H. [Descending aorta perfusion through median sternotomy in primary repair of aortic interruption complex]. Kyobu Geka 1999; 52:372-5. [PMID: 10319624] [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] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
Circulatory arrest is frequently used in aortic arch reconstruction in pediatric cardiac surgery. However, risks of postoperative acute renal failure and neurological deficit can not be ignored. We performed primary repair of aortic interruption in one-month old girl. After commencing extracorporeal circulation with bicaval venous cannulae and with arterial cannulae into the pulmonary trunk and the innominate artery, the descending aorta was cannulated just superior to the diaphragm. The cannula in the pulmonary trunk was then removed. Arch reconstruction and closure of the ventricular septal defect were performed with continuous perfusion to the brain and the lower body. The extracorporeal circulation time and the aortic cross-clamp time were 117 min and 21 min, respectively. Postoperative renal function was excellent, and there was no finding of neurological deficit. Cannulation of the descending aorta is a simple and useful technique with safety, in arch reconstruction in infants.
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Affiliation(s)
- Y Imoto
- Department of Cardiovascular Surgery, Fukuoka Children's Hospital, Japan
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Abstract
A bacterial strain capable of growing on cyclohexylamine (CHAM) was isolated by using enrichment and isolation techniques. The strain isolated, strain IH-35A, was classified as a member of the genus Brevibacterium. The results of growth and enzyme studies are consistent with degradation of CHAM via cyclohexanone (CHnone), 6-hexanolactone, 6-hydroxyhexanoate, and adipate. Cell extracts obtained from this strain grown on CHAM contained CHAM oxidase, and the model for CHAM oxidation by this enzyme was similar to the model for deamino oxidation of amine by amine oxidase.
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Affiliation(s)
- H Iwaki
- Department of Biotechnology, Faculty of Engineering and High Technology Research Center, Kansai University, Suita 564-8680, Japan
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Masuda M, Kado H, Imoto Y, Shiokawa Y, Fukae K, Kanegae Y, Iwaki H, Shirota T, Morita S, Tominaga R, Yasui H. [Clinical results of mitral valve surgery in children]. Kyobu Geka 1999; 52:301-6. [PMID: 10226423] [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] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
The clinical results of mitral valve surgery in children were evaluated. Fifty children (age ranged between 1 month and 12 years) with mitral valve regurgitation have undergone valve surgery with low operative mortality (2%). Valve plasty using several techniques including annuloplasty have been performed with quite high success rate (92%), while valve replacement was required in four patients who had the prolapse of the anterior mitral leaflet (8%). Reoperation was required in 5 patients (10%), and there were 4 late deaths. Introduction of the reconstructive technique of the chordae tendinae using artificial chordae resulted 100% success rate of mitral repair for the prolapse of the anterior mitral leaflet without death and reoperation. The reoperation free rate and the actuarial survival rate at 15 years of the patients with mitral regurgitation were 70 +/- 12% and 85 +/- 7%, respectively. In ten patients with mitral valve stenosis (age ranged between 1 month and 5 years), 5 patients required valve replacement (50%), and 2 patients died (20%). The clinical results of the surgery for the mitral stenosis were still unsatisfactory, and the reoperation free rate at 2 years was 42 +/- 30% and the actuarial survival rate at 13 years were 32 +/- 18%.
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Affiliation(s)
- M Masuda
- Division of Cardiovascular Surgery, Kyushu University, Fukuoka, Japan
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Iwaki H, Sakamoto A, Tanaka S. Effects of temperature and preservation time on the pharmacological response of isolated vascular endothelial and smooth muscle function. Nihon Ika Daigaku Zasshi 1999; 66:15-20. [PMID: 10097585 DOI: 10.1272/jnms.66.15] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
In clinical transplantation and cardiovascular surgery, cold preservation is usually used because it is a simple method. However, the established temperature is by no means exact. The aim of this study was to find the optimum storage temperature for preservation of the vasculature by observing the pharmacological endothelium and smooth muscle response. The thoracic aorta of 36 male Wister rats were studied in organ baths: as fresh control after 24 hours, 48 hours and 72 hours of storage at 0.5 degree C, 4 degrees C and 8 degrees C in Krebs-Henseleit bicarbonate (KHB) solution. Acetylcholine (Ach) was used to elicit endothelium-dependent relaxation, and sodium nitroprusside (SNP) to elicit smooth muscle-dependent relaxation. The contractility caused by Phenylephrine (Ph) was influenced by time but before 48 hours it was not influenced by preservation temperature. Significant responsive deterioration by Ach and SNP was seen after 24 hours of storage at 0.5 degree C as compared with storage at 4 degrees C. The endothelium-dependent relaxing function and smooth muscle-dependent relaxing function were best preserved at 4 degrees C and 8 degrees C. These results indicate that precise temperature control is necessary for vessel preservation in clinical situations.
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Affiliation(s)
- H Iwaki
- Second Department of Surgery, Nippon Medical School, Japan
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