FullText URL K001796.pdf
Author 大塚 文男|
Published Date 1998-03-31
Content Type Thesis or Dissertation
Grant Number 甲第1796号
Granted Date 1998-03-31
Thesis Type Doctor of Philosophy in Medical Science
Grantor 岡山大学
language Japanese
Author Otsuka, Fumio|
Published Date 2007-09-03
Publication Title 岡山医学会雑誌
Volume volume119
Issue issue2
Content Type Article
Author 武田 昌也| 大塚 文男| 中村 一文| 稲垣 兼一| 鈴木 二郎| 三浦 大志| 藤尾 栄起| 松原 広己| 伊達 洋至| 大江 透| 槇野 博史|
Published Date 2006-05-01
Publication Title 岡山医学会雑誌
Volume volume118
Issue issue1
Content Type Journal Article
Author Otani, Hiroyuki| Otsuka, Fumio| Makino, Hirofumi|
Published Date 2010-04-01
Publication Title 岡山医学会雑誌
Volume volume122
Issue issue1
Content Type Journal Article
JaLCDOI 10.18926/AMO/30375
FullText URL fulltext.pdf
Author Mimura, Yukari| Ogura, Toshio| Yamauchi, Takayoshi| Otsuka, Fumio| Oishi, Tetsuya| Harada, Kazushi| Hashimoto, Masami| Ota, Zensuke|
Abstract

We recently reported that stimulation of the arginine vasopressin (AVP) V1-receptor enhanced the pressor response in spontaneously hypertensive rats (SHR). In the present study, we investigated acute changes in systolic blood pressure (SBP) and heart rate (HR) after intravenous injections of AVP, OPC-21268 (a V1-receptor antagonist), and OPC-31260 (a V2-receptor antagonist), in anesthetized DOCA-salt hypertensive rats (DOCA) and age-matched sham-operated Wistar rats (control) to determine whether the pressor effect is specific to SHR or is present in other hypertensive animal models. SBP increased significantly in DOCA rats 9 min after injection of AVP 5 ng/kg without a concomitant increase in HR. Neither OPC-21268 3mg/kg nor OPC-31260 3mg/kg caused significant changes in SBP or HR. SBP tended to increase when AVP was administered after injection of OPC-31260. HR increased significantly 15 min after the combined treatment with OPC-31260 and AVP in DOCA rats compared with control rats. SBP did not change significantly when AVP was administered after injection of OPC-21268 in DOCA or control rats, but HR decreased significantly from 1 to 4 min after injection of AVP in DOCA rats. Our results suggest that V1-receptor stimulation does not enhance the pressor response in the DOCA rat, which is a model of volume-dependent hypertension, suggesting that the AVP system, especially V1-receptor, is not as important in the development or maintenance of hypertension in DOCA rats as in SHR.

Keywords vasopressin DOCA-salt hypertensive rat V1-and V2-receptor antagonist spontaneously hypertesive rat(SHR) OPC-21268
Amo Type Article
Publication Title Acta Medica Okayama
Published Date 1995-08
Volume volume49
Issue issue4
Publisher Okayama University Medical School
Start Page 187
End Page 194
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
File Version publisher
Refereed True
PubMed ID 7502678
Web of Science KeyUT A1995RR97800002
Author Otani, Hiroyuki| Otsuka, Fumio| Inagaki, Kenichi| Suzuki, Jiro| Miyoshi, Tomoko| Kano, Yoshihiro| Goto, Junko| Ogura, Toshio| Makino, Hirofumi|
Published Date 2008-06-25
Publication Title Endocrinology
Volume volume149
Issue issue6
Content Type Journal Article
JaLCDOI 10.18926/AMO/40128
FullText URL 64_4_213.pdf
Author Otani, Hiroyuki| Otsuka, Fumio| Inagaki, Kenichi| Suzuki, Jiro| Makino, Hirofumi|
Abstract Aldosterone production occurs in the adrenal cortex, and is regulated primarily by angiotensin II (Ang II), potassium and adrenocorticotropin (ACTH). In the presence of the aldosterone stimulators, steroidogenesis is further governed by local autocrine and/or paracrine factors in the adrenal cortex. We reported the presence of functional bone morphogenetic protein (BMP) system in the adrenal cortex and also demonstrated that BMP-6 increases Ang II-induced aldosterone production, which could be involved in the "aldosterone breakthrough" phenomenon. Aldosterone breakthrough is the phenomenon by which circulating aldosterone concentrations increase above pre-treatment levels after long-term therapy with ACE inhibitors or Ang II type 1 receptor antagonists (ARB). This phenomenon may lead to important clinical consequences since increased aldosterone in a high-salt state facilitates cardiovascular and renal damage in hypertensive patients. We found that long-term ARB treatment reverses the reduction of aldosterone synthesis by adrenocortical cells, thereby causing "cellular aldosterone breakthrough". The availability of BMP-6 in the adrenal cortex may be at least partly involved in the occurrence of cellular escape from aldosterone suppression under chronic treatment with ARB.
Keywords adrenal cortex angiotensin II aldosterone bone morphogenetic protein
Amo Type Review
Publication Title Acta Medica Okayama
Published Date 2010-08
Volume volume64
Issue issue4
Publisher Okayama University Medical School
Start Page 213
End Page 218
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
Copyright Holders Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 20802537
Web of Science KeyUT 000281384400001
Author Tsukamoto, Naoko| Otsuka, Fumio| Miyoshi, Tomoko| Inagaki, Kenichi| Nakamura, Eri| Suzuki, Jiro| Ogura, Toshio| Iwasaki, Yasumasa| Makino, Hirofumi|
Published Date 2011-01-30
Publication Title Molecular and Cellular Endocrinology
Volume volume332
Issue issue1-2
Content Type Journal Article
JaLCDOI 10.18926/AMO/47015
FullText URL 65_5_329.pdf
Author Matsumoto, Yoshinori| Sada, Ken-ei| Takano, Mariko| Toyota, Noriko| Yamanaka, Ryutaro| Sugiyama, Koichi| Wakabayashi, Hiroshi| Kawabata, Tomoko| Otsuka, Fumio| Makino, Hirofumi|
Abstract It is well known that infection is one of the major causes of morbidity and mortality in rheumatic disease patients treated with high-dose glucocorticoids, especially in the early phase after achievement of disease remission. The aim of this study was to identify the risk factors for infection, with a focus on the dose of glucocorticoids administered, following the achievement of disease remission in rheumatic diseases patients. We retrospectively analyzed the medical records of rheumatic disease patients who had been treated with glucocorticoids. The primary endpoint was the incidence rate of infection during a period from 1 to 2 months after the commencement of treatment. From April 2006 to March 2010, 19 of 92 patients suffered from infection during the observation period. Age≧65 yrs, presence of interstitial pneumonia, diagnosis of systemic vasculitis and serum creatinine level≧2.0mg/dl were found to be univariate predictors for infection. However, only the presence of interstitial pneumonia was an independent risk factor for infection (HR=4.50, 95%CI=1.65 to 14.44) by the Cox proportional hazard model. Even after achievement of clinical remission, careful observation is needed for patients with interstitial pneumonia, more so than for those receiving high-dose glucocorticoids.
Keywords infection rheumatic disease glucocorticoids interstitial pneumonia risk factors
Amo Type Original Article
Publication Title Acta Medica Okayama
Published Date 2011-10
Volume volume65
Issue issue5
Publisher Okayama University Medical School
Start Page 329
End Page 334
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
Copyright Holders CopyrightⒸ 2011 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 22037270
Web of Science KeyUT 000296116400007
JaLCDOI 10.18926/bgeou/47111
FullText URL bgeou_147_135_144.pdf
Author Mimura, Yukari| Ogura, Toshio| Otsuka, Fumio|
Abstract Thyroid stimulating hormone receptor antibody (TRAb) plays an important role in Graves' disease (GD). A second-generation measurement system has been developed and we have gotten a benefit by the system clinically. In this study, we determined 4 kinds of TRAb in 42 GD patients using the current and second-generation measurement systems to investigate the differences between them. The secondgeneration measurement system exhibited higher positive rates and inhibition rates of thyroid stimulating hormone (TSH) binding than those of the current system. Furthermore, 42 patients with GD were classified into 4 groups by GD activity. The actual values of all TRAbs and positive rates exhibited a tendency to increase significantly with GD activity. Of significance, 2 TRAbs in the second-generation measurement system exhibited high positive rates. However, all actual values of patients did not necessarily agree with these tendencies. The values of TRAb-human detecting anti-human TSH receptors at an approximate cut-off value reflected GD activity more accurately than those of TRAb-CT detecting anti-porcine TSH receptor. This suggests the possibility of specific differences between TSH receptors and further studies are required to further examine these effects.
Keywords Graves' disease human-TRAb TSAb
Publication Title 岡山大学大学院教育学研究科研究集録
Published Date 2011-06-25
Volume volume147
Start Page 135
End Page 144
ISSN 1883-2423
language English
File Version publisher
NAID 120003551002
FullText URL MCellularEndocrinology_348_1_224-232.pdf
Author Takano, Mariko| Otsuka, Fumio| Matsumoto, Yoshinori| Inagaki, Kenichi| Takeda, Masaya| Nakamura, Eri| Tsukamoto, Naoko| Miyoshi, Tomoko| Sada, Ken-ei| Makino, Hirofumi|
Keywords Bone morphogenetic protein (BMP) Peroxisome proliferator-activated receptor (PPAR) Osteoblast Tumor necrosis factor-alpha (TNF-alpha)
Published Date 2012-01-02
Publication Title Molecular and Cellular Endocrinology
Volume volume348
Issue issue1
Start Page 224
End Page 232
ISSN 0303-7207
Content Type Journal Article
language English
OAI-PMH Set 岡山大学
Copyright Holders (C) 2011 Elsevier Ireland Ltd. All rights reserved.
File Version author
DOI 10.1016/j.mce.2011.08.027
Web of Science KeyUT 000297539400025
Related Url isVesrionOf https://doi.org/10.1016/j.mce.2011.08.027
JaLCDOI 10.18926/AMO/49665
FullText URL 67_2_75.pdf
Author Otsuka, Fumio|
Abstract New biological activities of bone morphogenetic proteins (BMPs) in the endocrine system have recently been revealed. The BMP system is composed of approximately 30 ligands and preferential combinations of type I and type II receptors. The BMP system not only induces bone formation but also plays unique tissue-specific roles in various organs. For instance, the ovarian BMP system is a physiological inhibitor of luteinization in growing ovarian follicles. In the ovary, the expression of oocyte-derived BMP-15 is critical for female reproduction. In the pituitary, BMP-4 is a key player for initial development of the anterior pituitary, while it is also functionally involved in some differentiated pituitary tumors, including prolactinoma and Cushingʼs disease. In the adrenal glands, BMP-6 and BMP-4 modulate aldosterone and catecholamine production, respectively, which contributes to a functional interaction between the cortex and medulla. In the present review, recent advances in BMP biology in the field of endocrinology are described and the possibility for clinical application of BMP activity is discussed.
Keywords bone morphogenetic protein folliculogenesis pituitary adenoma steroidogenesis transforming growth factor
Amo Type Review
Publication Title Acta Medica Okayama
Published Date 2013-04
Volume volume67
Issue issue2
Publisher Okayama University Medical School
Start Page 75
End Page 86
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
Copyright Holders CopyrightⒸ 2013 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 23603923
Web of Science KeyUT 000317801700001
JaLCDOI 10.18926/AMO/51067
FullText URL 67_4_227.pdf
Author Ryuko, Hiromasa| Otsuka, Fumio|
Abstract Primary care physicians often encounter patients with fever of unknown origin and without apparent causes. Recent advances in laboratory medicine have facilitated diagnostic procedures;however, it is still difficult to determine the critical febrile factor at an early stage. We reviewed the medical records of 174 patients who were admitted due to a chief complaint of fever (>37.5℃) to our hospital during the period from 2004 to 2010. The patients were categorized into patients with infection, inflammation, neoplasm and drug-induced fever. Based on the analysis done by category, it was revealed that the patient's age, body temperature and duration of fever were closely related to the final diagnosis. Serum CRP levels were significantly low in the nonbacterial infection group, while serum levels of sIL-2R were high in neoplasm and drug-induced cases. CRP level on admission was weakly but significantly correlated with body temperature, while duration of fever was inversely related to body temperature. The effectiveness of PET-CT and tissue biopsy for diagnosis was considerably high, particularly in the categories of neoplasm and nonspecific inflammation, respectively, though the effectiveness of bacterial culture was low. Thus, a careful review of physical and laboratory information including body temperature, CRP level, duration of fever, gender difference and history of medication is indispensable for diagnosis. Stepwise categorization and disease classification by comprehensive and systemic checkup are very helpful for determining the causes of fever.
Keywords computed tomography (CT) C-reactive protein (CRP) fluorodeoxyglucose positron emission tomography (FDG-PET) fever of unknown origin (FUO) soluble interleukin-2 receptor (sIL-2R)
Amo Type Original Article
Publication Title Acta Medica Okayama
Published Date 2013-08
Volume volume67
Issue issue4
Publisher Okayama University Medical School
Start Page 227
End Page 237
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
Copyright Holders CopyrightⒸ 2013 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 23970321
Web of Science KeyUT 000323470100004
Related Url http://ousar.lib.okayama-u.ac.jp/metadata/51947
Author Otsuka, Fumio|
Published Date 2013-12-02
Publication Title 岡山医学会雑誌
Volume volume125
Issue issue3
Content Type Journal Article
JaLCDOI 10.18926/AMO/52145
FullText URL 68_1_53.pdf
Author Terasaka, Tomohiro| Ueta, Eijiro| Ebara, Hirotaka| Waseda, Koichi| Hanayama, Yoshihisa| Takaki, Akinobu| Kawabata, Tomoko| Sugiyama, Hitoshi| Hidan, Ko| Otsuka, Fumio|
Abstract A 64-year-old man suffering polyarthralgia and bone pain was referred to our hospital. Renal dysfunction, hypophosphatemia and increased levels of bone alkaline phosphatase were found. The patientʼs serum creatinine level had gradually increased after the initiation of adefovir dipivoxil administration for hepatitis B. In agreement with multifocal uptakes of bone scintigraphy, iliac bone biopsy revealed an abnormal increase in osteoid tissues. Reducing the dose of adefovir and initiating the administration of eldecalcitol were effective for reducing proteinuria and glucosuria, and for ameliorating bone pain with an increase in serum phosphate level. This case first showed a clinical course of hypophosphatemic osteomalacia caused by secondary Fanconiʼs syndrome for 8 years after adefovir administration. Early diagnosis is important for the reversibility of bone damage and for a better renal prognosis.
Keywords adefovir dipivoxil (ADV) eldecalcitol Fanconi's syndrome hypophosphatemia osteomalacia
Amo Type Case Report
Publication Title Acta Medica Okayama
Published Date 2014-02
Volume volume68
Issue issue1
Publisher Okayama University Medical School
Start Page 53
End Page 56
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
Copyright Holders CopyrightⒸ 2014 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 24553490
JaLCDOI 10.18926/AMO/52402
FullText URL 68_2_57.pdf
Author Hagiya, Hideharu| Naito, Hiromichi| Hagioka, Shingo| Okahara, Shuji| Morimoto, Naoki| Kusano, Nobuchika| Otsuka, Fumio|
Abstract The effect of antibiotics during the perioperative period of percutaneous dilatational tracheostomy (PDT) is still controversial. A total of 297 patients who underwent the PDT procedure were divided into 2 groups:those administered antibiotics perioperatively and those not administered antibiotics. Wound infections were noted in 7 cases (incidence rate, 2.36%) and no death was recorded. Of the 69 patients without antibiotics, 5 developed wound infections (incidence rate, 7.25%), while only 2 of the 228 patients with antibiotics developed wound infections (incidence rate, 0.88%) (p=0.002;risk ratio, 8.82;95% confidence interval, 1.67-46.6). Of the 7 cases of wound infection, 5 cases occurred during the early period after PDT (within 7 days). Collectively, the present results suggest that prophylactic administration of antibiotics may prevent the incidence of PDT-induced wound infection, especially in the early phase after the PDT procedures. The need for antibiotics in PDT should be reconsidered.
Keywords airway management critically ill patient percutaneous dilatational tracheostomy surgical site infection
Amo Type Original Article
Publication Title Acta Medica Okayama
Published Date 2014-04
Volume volume68
Issue issue2
Publisher Okayama University Medical School
Start Page 57
End Page 62
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
Copyright Holders CopyrightⒸ 2014 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 24743781
Web of Science KeyUT 000334652700001
JaLCDOI 10.18926/AMO/52658
FullText URL 68_3_171.pdf
Author Hagiya, Hideharu| Matsumoto, Mitsuaki| Yamasawa, Takahiko| Haruki, Yuto| Otsuka, Fumio|
Abstract A 79-year-old man who had undergone a right femoropopliteal (FP) bypass operation 6 weeks previously was diagnosed with vascular graft infection caused by Staphylococcus lugdunensis. Another FP bypass operation was performed, with long-term administration of antibiotics, and the patient eventually recovered well without any recurrences for over 2 years. Although S. lugdunens is classified as coagulase-negative Staphylococcus, its pathogenicity has been reported to be equal to that of S. aureus. Based on the literature review, the organism characteristically colonizes the inguinal area of human skin;thus, operations such as FP bypass grafting may place patients at a relatively high risk for infection by S. lugdunensis, a potentially high-pathogenicity organism.
Keywords coagulase-negative Staphylococcus (CNS) femoropopliteal (FP) bypass Staphylococcus lugdunensis vacuum-assisted closure (VAC) therapy vascular graft infection (VGI)
Amo Type Case Report
Publication Title Acta Medica Okayama
Published Date 2014-06
Volume volume68
Issue issue3
Publisher Okayama University Medical School
Start Page 171
End Page 175
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
Copyright Holders CopyrightⒸ 2014 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 24942796
Web of Science KeyUT 000337655600007
Author Terasaka, Tomohiro| Otsuka, Fumio| Tsukamoto, Naoko| Nakamura, Eri| Inagaki, Kenichi| Toma, Kishio| Ogura-Ochi, Kanako| Glidewell-Kenney, Christine| Lawson, Mark A.| Makino, Hirofumi|
Published Date 2013-12-05
Publication Title Molecular and Cellular Endocrinology
Volume volume381
Issue issue1-2
Content Type Journal Article
JaLCDOI 10.18926/AMO/53341
FullText URL 69_2_119.pdf
Author Terasaka, Tomohiro| Hagiya, Hideharu| Kimura, Kosuke| Nada, Takahiro| Nakamura, Eri| Hanayama, Yoshihisa| Sugiyama, Hitoshi| Kobayashi, Yasuyuki| Yanai, Hiroyuki| Otsuka, Fumio|
Abstract We report the case of a 46-year-old hypertensive Japanese female with renal insufficiency related to unilateral renal hypoplasia. The patient was found to have developed paraganglioma in the retroperitoneal space over a 5-year period. Catecholamine-producing tumors are not usually recognized as conditions associated with renal hypoplasia. Our long-term observation of the patient eventually led us to the diagnosis of paraganglioma. In hypertensive patients with chronic kidney disease, not only the renin-angiotensin-aldosterone system but also catecholamine activity may be involved, particularly in the patients whose cases are complicated with unilateral renal hypoplasia.
Keywords catecholamine paraganglioma renal hypoplasia renovascular hypertension secondary hypertension
Amo Type Case Report
Publication Title Acta Medica Okayama
Published Date 2015-04
Volume volume69
Issue issue2
Publisher Okayama University Medical School
Start Page 119
End Page 122
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
Copyright Holders CopyrightⒸ 2015 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 25899634
Web of Science KeyUT 000353181700007
JaLCDOI 10.18926/AMO/53342
FullText URL 69_2_123.pdf
Author Waseda, Koichi| Hagiya, Hideharu| Hanayama, Yoshihisa| Terasaka, Tomohiro| Kimura, Kosuke| Tsuzuki, Takao| Hasegawa, Kou| Nada, Takahiro| Nakamura, Eri| Murakami, Kazutoshi| Kondo, Eisei| Otsuka, Fumio|
Abstract An 81-year-old Japanese male with primary Sjögren syndrome (pSS) developed a low-grade fever and productive cough which were refractory to antibiotic therapy. Based on the high level of eosinophils observed in his bronchial alveolar lavage, he was diagnosed with chronic eosinophilic pneumonia (CEP) and successfully treated by oral prednisolone. Interstitial lung diseases associated with pSS (pSS-ILDs) usually present as nonspecific interstitial pneumonia or usual interstitial pneumonia; therefore, the present case is extremely unique in that the patientʼs condition was complicated with CEP. A diagnosis of advanced gallbladder cancer was made in the patientʼs clinical course, suggesting the advisability of a whole-body workup in cases of pSS, especially in elderly patients.
Keywords bronchial alveolar lavage eosinophilic pneumonia eosinophilia interstitial lung diseases Sjögren syndrome
Amo Type Case Report
Publication Title Acta Medica Okayama
Published Date 2015-04
Volume volume69
Issue issue2
Publisher Okayama University Medical School
Start Page 123
End Page 127
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language English
Copyright Holders CopyrightⒸ 2015 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 25899635
Web of Science KeyUT 000353181700008