1
|
Kimura S, Takeshita N, Oyanagi T, Seki D, Jiang W, Hidaka K, Fukumoto S, Takahashi I, Takano-Yamamoto T. HIF-2α Inhibits Ameloblast Differentiation via Hey2 in Tooth Development. J Dent Res 2022; 101:1637-1644. [PMID: 35912776 DOI: 10.1177/00220345221111971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Enamel is the highly mineralized outer layer of teeth; the cells responsible for enamel formation are ameloblasts. Local hypoxia and hypoxia inducible factor (HIF) in embryonic tissues are important to promote normal organogenesis. However, hypoxic state in tooth germs and the roles of HIF in ameloblast differentiation have not been understood. The aim of this study is to clarify the role of HIF in ameloblast differentiation during tooth germ development. We found that tooth germs were under hypoxia and HIF-1α and HIF-2α were expressed in tooth germs in embryonic mice. Then, we used HIF inhibitors to evaluate the function of HIF during tooth germ development. The HIF-2α inhibitor significantly decreased the size of tooth germs in organ culture, while the HIF-1α inhibitor did not apparently affect the size of tooth germs. The HIF-2α inhibitor enhanced the expression of amelogenin, a marker of ameloblast differentiation, in the tooth germs in organ culture and rat dental epithelial SF2 cells. Moreover, we found that the HIF-2α inhibitor-stimulating amelogenin expression was regulated by hes-related family basic helix-loop-helix transcription factor with YRPW motif 2(Hey2) in SF2 cells. These findings suggest that the HIF-2α-Hey2 axis plays an important role in ameloblast differentiation during tooth germ development.
Collapse
Affiliation(s)
- S Kimura
- Division of Orthodontics and Dentofacial Orthopedics, Graduate School of Dentistry, Tohoku University, Sendai, Miyagi, Japan
| | - N Takeshita
- Division of Orthodontics and Dentofacial Orthopedics, Graduate School of Dentistry, Tohoku University, Sendai, Miyagi, Japan.,Section of Orthodontics and Dentofacial Orthopedics, Faculty of Dental Science, Kyushu University, Fukuoka, Fukuoka, Japan
| | - T Oyanagi
- Division of Orthodontics and Dentofacial Orthopedics, Graduate School of Dentistry, Tohoku University, Sendai, Miyagi, Japan
| | - D Seki
- Division of Orthodontics and Dentofacial Orthopedics, Graduate School of Dentistry, Tohoku University, Sendai, Miyagi, Japan
| | - W Jiang
- Division of Orthodontics and Dentofacial Orthopedics, Graduate School of Dentistry, Tohoku University, Sendai, Miyagi, Japan
| | - K Hidaka
- Section of Orthodontics and Dentofacial Orthopedics, Faculty of Dental Science, Kyushu University, Fukuoka, Fukuoka, Japan
| | - S Fukumoto
- Division of Pediatric Dentistry, Graduate School of Dentistry, Tohoku University, Sendai, Miyagi, Japan.,Section of Oral Medicine for Children, Faculty of Dental Science, Kyushu University, Fukuoka, Fukuoka, Japan
| | - I Takahashi
- Section of Orthodontics and Dentofacial Orthopedics, Faculty of Dental Science, Kyushu University, Fukuoka, Fukuoka, Japan
| | - T Takano-Yamamoto
- Division of Orthodontics and Dentofacial Orthopedics, Graduate School of Dentistry, Tohoku University, Sendai, Miyagi, Japan.,Department of Biomaterials and Bioengineering, Faculty of Dental Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| |
Collapse
|
2
|
Chiba Y, Yoshizaki K, Tian T, Miyazaki K, Martin D, Saito K, Yamada A, Fukumoto S. Integration of Single-Cell RNA- and CAGE-seq Reveals Tooth-Enriched Genes. J Dent Res 2021; 101:220345211049785. [PMID: 34806461 PMCID: PMC9052834 DOI: 10.1177/00220345211049785] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Organ development is dictated by the regulation of genes preferentially expressed in tissues or cell types. Gene expression profiling and identification of specific genes in organs can provide insights into organogenesis. Therefore, genome-wide analysis is a powerful tool for clarifying the mechanisms of development during organogenesis as well as tooth development. Single-cell RNA sequencing (scRNA-seq) is a suitable tool for unraveling the gene expression profile of dental cells. Using scRNA-seq, we can obtain a large pool of information on gene expression; however, identification of functional genes, which are key molecules for tooth development, via this approach remains challenging. In the present study, we performed cap analysis of gene expression sequence (CAGE-seq) using mouse tooth germ to identify the genes preferentially expressed in teeth. The CAGE-seq counts short reads at the 5'-end of transcripts; therefore, this method can quantify the amount of transcripts without bias related to the transcript length. We hypothesized that this CAGE data set would be of great help for further understanding a gene expression profile through scRNA-seq. We aimed to identify the important genes involved in tooth development via bioinformatics analyses, using a combination of scRNA-seq and CAGE-seq. We obtained the scRNA-seq data set of 12,212 cells from postnatal day 1 mouse molars and the CAGE-seq data set from postnatal day 1 molars. scRNA-seq analysis revealed the spatiotemporal expression of cell type-specific genes, and CAGE-seq helped determine whether these genes are preferentially expressed in tooth or ubiquitously. Furthermore, we identified candidate genes as novel tooth-enriched and dental cell type-specific markers. Our results show that the integration of scRNA-seq and CAGE-seq highlights the genes important for tooth development among numerous gene expression profiles. These findings should contribute to resolving the mechanism of tooth development and establishing the basis for tooth regeneration in the future.
Collapse
Affiliation(s)
- Y. Chiba
- Section of Oral Medicine for
Children, Division of Oral Health, Growth and Development, Faculty of Dental
Science, Kyushu University, Fukuoka, Japan
| | - K. Yoshizaki
- Section of Orthodontics and
Dentofacial Orthopedics, Division of Oral Health, Growth and Development,
Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - T. Tian
- Section of Orthodontics and
Dentofacial Orthopedics, Division of Oral Health, Growth and Development,
Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - K. Miyazaki
- Section of Orthodontics and
Dentofacial Orthopedics, Division of Oral Health, Growth and Development,
Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - D. Martin
- Genomics and Computational
Biology Core, National Institute on Deafness and Other Communication
Disorders, National Institute of Dental and Craniofacial Research, National
Institutes of Health, Bethesda, MD, USA
| | - Genomics and Computational Biology Core
- Genomics and Computational
Biology Core, National Institute on Deafness and Other Communication
Disorders, National Institute of Dental and Craniofacial Research, National
Institutes of Health, Bethesda, MD, USA
| | - K. Saito
- Division of Pediatric Dentistry,
Department of Community Social Dentistry, Graduate School of Dentistry,
Tohoku University, Sendai, Japan
| | - A. Yamada
- Division of Pediatric Dentistry,
Department of Community Social Dentistry, Graduate School of Dentistry,
Tohoku University, Sendai, Japan
| | - S. Fukumoto
- Section of Oral Medicine for
Children, Division of Oral Health, Growth and Development, Faculty of Dental
Science, Kyushu University, Fukuoka, Japan
- Division of Pediatric Dentistry,
Department of Community Social Dentistry, Graduate School of Dentistry,
Tohoku University, Sendai, Japan
| |
Collapse
|
3
|
Fukuura K, Ao T, Sasaki N, Fukumoto S, Kimura M. [A Survey of the Use of Direct Oral Anticoagulants in Patients' Possession at the Time of Hospitalization]. YAKUGAKU ZASSHI 2021; 141:1009-1013. [PMID: 34334546 DOI: 10.1248/yakushi.21-00057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The dose of direct oral anticoagulants (DOACs) must be determined based on package insert recommendations. There are reports on the rate of inappropriate DOAC dose usage defined as a dose deviating from the approved dose in the package insert but no reports on factors that led to such deviations. Thus, patients who were admitted to the Suzuka Kaisei Hospital between 1 April 2016 and 31 March 2017 were chosen as subjects. Moreover, the factors that during hospitalization led to dose deviation from the package-insert DOAC dose were retrospectively examined. The characteristics of patients administered doses deviating from the package insert were compared with those of patients in the appropriate-dose group. The finding was that the proportion concomitantly administered antiplatelet agents was higher in the underdose group. In contrast, deviations from the recommended dose did not occur when DOACs were combined with CYP3A4 inhibitors or P-glycoprotein (P-gp) inhibitors. It was suggested that increase in the risk of hemorrhage by antiplatelet agents in combination with oral anticoagulants could explain deviations from the stipulated DOAC dose. In addition, a higher proportion of patients in the overdose group showed depressed Ccr, and gastrointestinal bleeding. In future, it will be necessary to propose principle-based dose changes for patients administered doses deviating from the package insert. If an underdose is administered, it is important to make a dose change that takes the concomitant drugs into consideration.
Collapse
Affiliation(s)
| | - Takaaki Ao
- Medicine Department, Suzuka Kaisei Hospital
| | | | | | | |
Collapse
|
4
|
Abstract
BACKGROUND Inorganic phosphate (Pi) is an essential mineral for human. Hypophosphatemia and hyperphosphatemia cause rickets/osteomalacia and ectopic calcification, respectively, indicating that serum Pi level needs to be regulated. Fibroblast growth factor (FGF) 23 is a principal hormone to regulate serum Pi level. FGF23 is produced by the bone, especially by the osteoblasts and osteocytes, and works by binding to FGF receptor (FGFR) 1c and α-Klotho complex in the kidney. FGF23 reduces serum Pi level by inhibiting both renal phosphate reabsorption and intestinal phosphate absorption via reduction of serum 1,25-dihydroxyvitamin D level. It has been unclear how the bone senses changes of serum Pi level and how the bone regulates the production of FGF23. RECENT FINDINGS Our recent results indicate that the post-translational modification of FGF23 protein through a gene product of GALNT3 is the main regulatory mechanism of enhanced FGF23 production by high dietary Pi. Furthermore, high extracellular Pi directly activates FGFR1 and its downstream intracellular signaling pathway regulates the expression level of GALNT3. CONCLUSIONS We propose that FGFR1 works as a Pi-sensing receptor in the regulation of FGF23 production and serum Pi level. There is a negative feedback system, which is a basic mechanism of endocrine regulation, in the regulation of serum Pi involving FGFR1, and FGF23. These findings may lead to the development of new therapeutic methods to treat diseases caused by abnormal Pi level.
Collapse
Affiliation(s)
- Y Takashi
- Department of Endocrinology and Diabetes Mellitus, Fukuoka University Chikushi Hospital, Fukuoka, Japan
| | - S Fukumoto
- Department of Molecular Endocrinology, Fujii Memorial Institute of Medical Sciences, Institute of Advanced Medical Sciences, Tokushima University, Tokushima, Japan.
| |
Collapse
|
5
|
Nakamura Y, Liu Z, Fukumoto S, Shinoda K, Sakoda A, Matsushita T, Hayashida S, Isobe N, Watanabe M, Hiwatashi A, Yamasaki R, Kira JI. Spinal cord involvement by atrophy and associations with disability are different between multiple sclerosis and neuromyelitis optica spectrum disorder. Eur J Neurol 2019; 27:92-99. [PMID: 31304648 DOI: 10.1111/ene.14038] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 06/18/2019] [Indexed: 01/07/2023]
Abstract
BACKGROUND AND PURPOSE The cervical and thoracic cross-sectional spinal cord area (CS-SCA) in multiple sclerosis (MS) correlates with disability, whilst such a correlation remains to be established in neuromyelitis optica spectrum disorder (NMOSD). Our aim was to clarify differences between MS and NMOSD in spinal cord segments where CS-SCA is associated with disability. METHODS The CS-SCA at C2/C3, C3/C4, T8/T9 and T9/T10 vertebral disc levels was measured in 140 MS patients (111 with relapsing-remitting MS and 29 with progressive MS) and 42 NMOSD patients with anti-aquaporin-4 immunoglobulin G. Disability was evaluated by Expanded Disability Status Scale (EDSS) scores. Multivariate associations between CS-SCA and disability were assessed by stepwise forward multiple linear regression. RESULTS Thoracic CS-SCA was significantly smaller in NMOSD patients than in MS patients even after adjusting for age, sex and disease duration (P = 0.002 at T8/T9), whilst there was no difference in cervical CS-SCA between the two diseases. Cervical and thoracic CS-SCA had a negative correlation with EDSS scores in MS patients (P < 0.0001 at C3/C4 and P = 0.0002 at T8/T9) whereas only thoracic CS-SCA correlated with EDSS scores in NMOSD patients (P = 0.0006 at T8/T9). By multiple regression analyses, predictive factors for disability in MS were smaller cervical CS-SCA, progressive course, older age and a higher number of relapses, whilst those in NMOSD were smaller thoracic CS-SCA and older age. CONCLUSIONS Thoracic CS-SCA is a useful predictive marker for disability in patients with NMOSD whilst cervical CS-SCA is associated with disability in patients with MS.
Collapse
Affiliation(s)
- Y Nakamura
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Z Liu
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - S Fukumoto
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - K Shinoda
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - A Sakoda
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - T Matsushita
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - S Hayashida
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - N Isobe
- Department of Neurological Therapeutics, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - M Watanabe
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - A Hiwatashi
- Department of Molecular Imaging & Diagnosis, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - R Yamasaki
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - J-I Kira
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| |
Collapse
|
6
|
Sugitani A, Asai K, Watanabe T, Suzumura T, Kojima K, Kubo H, Sato K, Ijiri N, Yamada K, Kimura T, Fukumoto S, Hirata K, Kawaguchi T. A Polymorphism rs6726395 in Nrf2 Contributes to the Development of Emphysema-Associated Age in Smokers Without COPD. Lung 2019; 197:559-564. [PMID: 31297601 DOI: 10.1007/s00408-019-00251-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 06/29/2019] [Indexed: 12/01/2022]
Abstract
INTRODUCTION Several studies have reported that single nucleotide polymorphisms (SNPs) in the gene encoding NF-E2-related factor 2 (Nrf2) contribute to airflow limitations in smokers without COPD. Although small airway lesions and emphysema contribute cooperatively to airflow limitation, the relationship between Nrf2 SNPs and the development of emphysema in smokers without COPD is not well understood. METHODS Healthy subjects who underwent an annual health checkup with computed tomography (CT) of the chest at Osaka City University Hospital were prospectively recruited. The percentage of low-attenuation area (%LAA) on chest CT was quantified, and correlations between %LAA, Nrf2 SNP [rs6726395 (G/A)] genotypes, and clinical characteristics were examined. RESULTS A total of 245 subjects without COPD [non-/light-smoker: 153 (62.4%) and smoker: 92 (37.6%)] were enrolled. The %LAA in the upper lung field was higher than that in the lower lung field (p < 0.001). The %LAA in smokers was significantly higher than that in non-/light-smokers (p = 0.021). The %LAA showed significant but weak correlation with age in all subjects (r = 0.141, p = 0.028). Divided by genotype, the %LAA of the upper lung field was significantly correlated with age in smokers with genotype GG (wild type) (r = 0.333, p = 0.022), but was not significantly correlated with age in smokers with genotype AG/AA. These correlations were not observed in non-/light smokers. CONCLUSION A polymorphism rs6726395 in Nrf2 can contribute to the development of emphysema-associated aging in smokers. The Nrf2 SNP may be a predictive factor for smoking-induced emphysema, and genotyping of Nrf2 SNP may serve as biomarker for emphysema prevention.
Collapse
Affiliation(s)
- A Sugitani
- Department of Respiratory Medicine, Graduate School of Medicine, Osaka City University, Osaka, Japan
| | - K Asai
- Department of Respiratory Medicine, Graduate School of Medicine, Osaka City University, Osaka, Japan.
| | - T Watanabe
- Department of Respiratory Medicine, Graduate School of Medicine, Osaka City University, Osaka, Japan
| | - T Suzumura
- Department of Respiratory Medicine, Graduate School of Medicine, Osaka City University, Osaka, Japan
| | - K Kojima
- Department of Respiratory Medicine, Graduate School of Medicine, Osaka City University, Osaka, Japan
| | - H Kubo
- Department of Respiratory Medicine, Graduate School of Medicine, Osaka City University, Osaka, Japan
| | - K Sato
- Department of Respiratory Medicine, Graduate School of Medicine, Osaka City University, Osaka, Japan
| | - N Ijiri
- Department of Respiratory Medicine, Graduate School of Medicine, Osaka City University, Osaka, Japan
| | - K Yamada
- Department of Respiratory Medicine, Graduate School of Medicine, Osaka City University, Osaka, Japan
| | - T Kimura
- Department of Premier Preventive Medicine, Graduate School of Medicine, Osaka City University, Osaka, Japan
| | - S Fukumoto
- Department of Premier Preventive Medicine, Graduate School of Medicine, Osaka City University, Osaka, Japan
| | - K Hirata
- Department of Respiratory Medicine, Graduate School of Medicine, Osaka City University, Osaka, Japan
| | - T Kawaguchi
- Department of Respiratory Medicine, Graduate School of Medicine, Osaka City University, Osaka, Japan
| |
Collapse
|
7
|
Shoji T, Okute Y, Tsujimoto Y, Nakatani S, Mori K, Fukumoto S, Emoto M, Inaba M. SUN-054 ALTERED BIOMARKER PROFILE OF CHOLESTEROL ABSORPTION IN ASSOCIATION WITH RISK OF FUTURE CARDIOVASCULAR EVENTS AND MORTALOTY IN A HEMODIALYSIS COHORT. Kidney Int Rep 2019. [DOI: 10.1016/j.ekir.2019.05.450] [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] Open
|
8
|
He B, Chiba Y, Li H, de Vega S, Tanaka K, Yoshizaki K, Ishijima M, Yuasa K, Ishikawa M, Rhodes C, Sakai K, Zhang P, Fukumoto S, Zhou X, Yamada Y. Identification of the Novel Tooth-Specific Transcription Factor AmeloD. J Dent Res 2018; 98:234-241. [PMID: 30426815 DOI: 10.1177/0022034518808254] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Basic-helix-loop-helix (bHLH) transcription factors play an important role in various organs' development; however, a tooth-specific bHLH factor has not been reported. In this study, we identified a novel tooth-specific bHLH transcription factor, which we named AmeloD, by screening a tooth germ complementary DNA (cDNA) library using a yeast 2-hybrid system. AmeloD was mapped onto the mouse chromosome 1q32. Phylogenetic analysis showed that AmeloD belongs to the achaete-scute complex-like ( ASCL) gene family and is a homologue of ASCL5. AmeloD was uniquely expressed in the inner enamel epithelium (IEE), but its expression was suppressed after IEE cell differentiation into ameloblasts. Furthermore, AmeloD expression showed an inverse expression pattern with the epithelial cell-specific cell-cell adhesion molecule E-cadherin in the dental epithelium. Overexpression of AmeloD in dental epithelial cell line CLDE cells resulted in E-cadherin suppression. We found that AmeloD bound to E-box cis-regulatory elements in the proximal promoter region of the E-cadherin gene. These results reveal that AmeloD functions as a suppressor of E-cadherin transcription in IEE cells. Our study demonstrated that AmeloD is a novel tooth-specific bHLH transcription factor that may regulate tooth development through the suppression of E-cadherin in IEE cells.
Collapse
Affiliation(s)
- B He
- 1 Molecular Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA.,2 State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,3 Protein Section, Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Y Chiba
- 1 Molecular Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA.,4 Division of Pediatric Dentistry, Department of Oral Health and Development Sciences, Graduate School of Dentistry, Tohoku University, Sendai, Japan
| | - H Li
- 1 Molecular Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA.,5 Lifecare Acupuncture and Alternative Medicine Center, Colleyville, TX, USA
| | - S de Vega
- 1 Molecular Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA.,6 Department of Pathophysiology for Locomotive and Neoplastic Diseases, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - K Tanaka
- 1 Molecular Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA.,7 Department of Orthopedic Surgery, Oita University, Oita, Japan
| | - K Yoshizaki
- 1 Molecular Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA.,8 Division of Oral Health, Growth and Development, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - M Ishijima
- 1 Molecular Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA.,9 Department of Medicine for Orthopedics and Motor Organ, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - K Yuasa
- 1 Molecular Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA.,10 Pediatric Dentistry, St. Mary's Hospital, Kurume, Japan
| | - M Ishikawa
- 1 Molecular Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA.,11 Division of Operative Dentistry, Laboratory of Cell and Department of Restorative Dentistry, Graduate School of Dentistry, Tohoku University, Sendai, Japan
| | - C Rhodes
- 1 Molecular Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - K Sakai
- 1 Molecular Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA.,12 Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Nagoya University, Nagoya, Japan
| | - P Zhang
- 1 Molecular Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - S Fukumoto
- 4 Division of Pediatric Dentistry, Department of Oral Health and Development Sciences, Graduate School of Dentistry, Tohoku University, Sendai, Japan
| | - X Zhou
- 2 State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Y Yamada
- 1 Molecular Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| |
Collapse
|
9
|
Fujimoto T, Ichinose M, Fukumoto S, Mizota T. Evaluations of serum anti-ganglioside antibody, initial symptoms and effectiveness of immunoglobulin therapy in patients with Guillain-Barre syndrome. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3714] [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]
|
10
|
Harada T, Fukumoto S, Harada M, Nakano K, Sukoh N, Fuke S, Asahina H, Takamura K, Yamamoto M, Fujita Y, Akie K, Kinoshita I, Oizumi S, Akita H, Isobe H, Nishimura M. A Randomized Phase Ii Trial of Cisplatin Plus Gemcitabine Versus Carboplatin Plus Gemcitabine in Patients with Completely Resected Non-Small Cell Lung Cancer: Hokkaido Lung Cancer Clinical Study Group Trial (Hot0703). Ann Oncol 2014. [DOI: 10.1093/annonc/mdu347.18] [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: 11/14/2022] Open
|
11
|
Nakatani S, Ishimura E, Naganuma T, Nakatani A, Ichii M, Fukumoto S, Mori K, Emoto M, Nakatani T, Inaba M. Poor glycemic control and decreased renal function are associated with increased intrarenal RAS activity in Type 2 diabetes mellitus. Diabetes Res Clin Pract 2014; 105:40-6. [PMID: 24846444 DOI: 10.1016/j.diabres.2014.04.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 03/14/2014] [Accepted: 04/19/2014] [Indexed: 11/17/2022]
Abstract
AIMS The renin-angiotensin system (RAS) plays an important role in the pathogenesis of diabetic nephropathy. The aim of the present study was to investigate intrarenal RAS activity in patients with type 2 diabetes (T2DM). METHODS We measured urinary angiotensinogen, a reliable biomarker of intrarenal RAS activity, in 14 controls without T2DM, 25 T2DM patients without nephropathy, 11 chronic kidney disease (CKD) patients without T2DM and 46 CKD patients with T2DM. Associations between urinary angiotensinogen and clinical parameters were examined. RESULTS Compared with the controls, urinary [angiotensinogen:creatinine] were significantly higher in T2DM patients without nephropathy (4.70 ± 2.22 vs. 8.31 ± 5.27 μg/g, p=0.037). Age, hemoglobin A1c (HbA1c) and fasting plasma glucose correlated significantly and positively with the log{urinary [angiotensinogen:creatinine]} (r=0.632, p=0.007; r=0.405, p=0.027; r=0.583, p=0.003, respectively) in T2DM patients without nephropathy. In contrast, the urinary [angiotensinogen:creatinine] were not significantly different between CKD patients with and without T2DM (22.7 ± 27.8 vs. 33.5 ± 40.8 μg/g, p=0.740); although they were significantly higher when compared with non-CKD patients. In the CKD patients with T2DM systolic blood pressure, serum creatinine, estimated glomerular filtration rate and urinary [albumin:creatinine] correlated significantly with the log{urinary [angiotensinogen:creatinine]} (r=0.412, p=0.004; r=0.308, p=0.037; r=-0.382, p=0.001; r=0.648, p<0.001, p<0.001, respectively). CONCLUSIONS Our findings indicate that poor glycemic control is significantly associated with intrarenal RAS activity in T2DM patients without nephropathy, and that decreased renal function is significantly associated with intrarenal RAS activity in CKD patients with T2DM.
Collapse
Affiliation(s)
- S Nakatani
- Departments of Metabolism, Endocrinology, and Molecular Medicine Osaka City University Graduate School of Medicine, Osaka, Japan; Departments of Nephrology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - E Ishimura
- Departments of Nephrology, Osaka City University Graduate School of Medicine, Osaka, Japan.
| | - T Naganuma
- Department of Urology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - A Nakatani
- Departments of Metabolism, Endocrinology, and Molecular Medicine Osaka City University Graduate School of Medicine, Osaka, Japan
| | - M Ichii
- Departments of Metabolism, Endocrinology, and Molecular Medicine Osaka City University Graduate School of Medicine, Osaka, Japan; Departments of Nephrology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - S Fukumoto
- Departments of Metabolism, Endocrinology, and Molecular Medicine Osaka City University Graduate School of Medicine, Osaka, Japan
| | - K Mori
- Departments of Metabolism, Endocrinology, and Molecular Medicine Osaka City University Graduate School of Medicine, Osaka, Japan
| | - M Emoto
- Departments of Metabolism, Endocrinology, and Molecular Medicine Osaka City University Graduate School of Medicine, Osaka, Japan
| | - T Nakatani
- Department of Urology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - M Inaba
- Departments of Metabolism, Endocrinology, and Molecular Medicine Osaka City University Graduate School of Medicine, Osaka, Japan
| |
Collapse
|
12
|
Affiliation(s)
- H. Matsuda
- Institute of Physics, College of General Education, Osaka University, Toyonaka, Japan
| | - S. Fukumoto
- Institute of Physics, College of General Education, Osaka University, Toyonaka, Japan
| | - T. Matsuo
- Institute of Physics, College of General Education, Osaka University, Toyonaka, Japan
| | - M. Nojiri
- Japan Electron Optics Laboratory, Akishima, Tokyo, Japan
| |
Collapse
|
13
|
Abstract
A new type of mass spectrograph with large mass dispersion has been constructed. The distinguishing feature of this apparatus is that the mass dispersing action of a r-l magnetic field is utilized. The instrument has a r-1 magnetic field of 198.1° sector type (22 cm mean radius) as the dispersing field, a toroidal electric field of 118.7° sector type (30 cm mean radius) and a 30° uniform magnetic field (120 cm mean radius) as the focusing fields. The principle, the design and important parts of the apparatus are described. The dispersion on the photographic plate was estimated to be 14 cm for 1% mass difference and the maximum resolving power of about 500,000 was obtained.
Collapse
Affiliation(s)
- H. Matsuda
- Institute of Physics, College of General Education, Osaka University
| | - S. Fukumoto
- Institute of Physics, College of General Education, Osaka University
| | - Y. Kuroda
- Institute of Physics, College of General Education, Osaka University
| | | |
Collapse
|
14
|
Fernandes J, Ribeiro S, Garrido P, Sereno J, Costa E, Reis F, Santos-Silva A, Hirata M, Tashiro Y, Aizawa K, Endo K, Fujimori A, Morikami Y, Okada S, Kumei M, Mizobuchi N, Sakai M, Claes K, Di Giulio S, Galle J, Guerin A, Kiss I, Suranyi M, Winearls C, Wirnsberger G, Farouk M, Manamley N, Addison J, Herlitz H, Visciano B, Nazzaro P, Riccio E, Del Rio A, Mozzillo GR, Pisani A, Gupta A, Ikizler TA, Lin V, Guss C, Pratt RD, Stewart VM, Anthoney A, Blenkin S, Ahmed S, Yasumoto M, Tsuda A, Ishimura E, Ohno Y, Ichii M, Nakatani S, Mori K, Fukumoto S, Uchida J, Emoto M, Nakatani T, Inaba M, Joki N, Tanaka Y, Kubo S, Asakawa T, Hase H, Ikeda M, Inaguma D, Sakaguchi T, Shinoda T, Koiwa F, Negi S, Yamaka T, Shigematsu T, Inaguma D, Suranyi MG, Claes K, Di Giulio S, Galle J, Kiss I, Winearls C, Wirnsberger G, Farouk M, Manamley N, Addison J, Herlitz H, Guerin A, Groenendaal-Van De Meent D, Den Adel M, Rijnders S, Essers H, Golor G, Haffner S, Schaddelee M, Hirata M, Tashiro Y, Yogo K, Aizawa K, Endo K, Choukroun G, Hannedouche T, Kessler M, Laville M, Levannier M, Mignon F, Rostaing L, Rottembourg J, Jeon J, Park Y, Karanth S, Prabhu R, Bairy M, Nagaraju SP, Bhat A, Kosuru S, Parthasarathy R, Kamath S, Prasad HK, Kallurwar KP, Nishida H, Iimori S, Okado T, Rai T, Uchida S, Sasaki S, Wan Q, Cana Ruiu DC, Ashcroft R, Brown C, Williams J, Mikhail A. CKD ANAEMIA. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu147] [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: 11/14/2022] Open
|
15
|
Vanikar AV, Trivedi HL, Dave SD, Kute VB, Rawal MN, Patel HV, Gumber MR, Afghahi H, Pirouzifard M, Svensson AM, Eliasson B, Svensson MK, Dumann K, Horrmann B, Lammert A, Rheinberger M, Gorski M, Kramer BK, Heid IM, Boger CA, Demirtas L, Akbas EM, Timuroglu A, Ozcicek F, Turkmen K, Fernandez-Fernandez B, Sanchez-Nino MD, Martin-Cleary C, Izquierdo MC, Elewa U, Ortiz A, Petrica L, Vlad A, Gluhovschi G, Gadalean F, Dumitrascu V, Gluhovschi C, Velciov S, Bob F, Vlad D, Popescu R, Petrica M, Jianu DC, Milas O, Izvernari O, Ursoniu S, Makino Y, Konoshita T, Nyumura I, Babazono T, Yoshida N, Uchigata Y, Handisurya A, Kerscher C, Tura A, Werzowa J, Heinzl H, Ristl R, Kautzky-Willer A, Pacini G, Saemann M, Schmidt A, Halbesma N, Metcalfe W, Bulum T, Prka in I, Blaslov K, Zibar K, Duvnjak L, Idorn T, Knop FK, Jorgensen MB, Christensen M, Holst JJ, Hornum M, Feldt-Rasmussen B, Naess H, Hartmann A, Jenssen TG, Holdaas H, Horneland R, Grzyb K, Bitter J, Midtvedt K, Yoshida N, Babazono T, Uchigata Y, Timar R, Gluhovschi G, Gadalean F, Velciov S, Petrica L, Timar B, Gluhovschi C, Soro-Paavonen A, Fleming T, Forsblom C, Gordin D, Tolonen N, Harjutsalo V, Nawroth PP, Groop PH, Tsuda A, Ishimura E, Uedono H, Yasumoto M, Nakatani S, Ichii M, Ohno Y, Ochi A, Mori K, Fukumoto S, Emoto M, Inaba M, Rheinberger M, Hormann B, Lammert A, Dumann K, Gorski M, Heid IM, Kramer BK, Boger CA, Siddaramaiah NH, Tez DK, Linker NJ, Bilous M, Winship S, Marshall SM, Bilous RW, Lampropoulou IT, Papagianni A, Stangou M, Didangelos T, Iliadis F, Efstratiadis G, Esposito P, Debarbieri G, Mereu R, Ditoro A, Montagna F, Groop PH, Bernardi L, Dal Canton A, Garland JS, Holden R, Morton R, Ross R, Adams M, Pruss C, Akbas EM, Demirtas L, Timuroglu A, Ozcicek F, Turkmen K, Bulum T, Prka in I, Blaslov K, Zibar K, Duvnjak L, Theodoridis M, Panagoutsos S, Bounta T, Roumeliotis S, Kantartzi K, Pouloutidis G, Passadakis P, Polaina Rusillo M, Borrego Utiel FJ, Ortega Anguiano S, Liebana Canada A, Gaber EW, Abdel Rehim WM, Ibrahim NA, Mahmoud BF, Silva AP, Fragoso A, Tavares N, Silva C, Santos N, Camacho A, Neves P, Rodriguez R, Porrini E, Gonzalez-Rinne A, De Vries A, Torres A, Salido E, Kato S, Makino H, Uzu T, Koya D, Nishiyama A, Imai E, Ando M, Jorgensen MB, Knop FK, Idorn T, Holst JJ, Hornum M, Feldt-Rasmussen B, Vaduva C, Popa S, Mitrea A, Mota M, Mota E, Theodoridis M, Panagoutsos S, Roumeliotis S, Bounta T, Kriki P, Roumeliotis A, Passadakis P, Ogawa T, Okazaki S, Hatano M, Hara H, Inamura M, Kiba T, Iwashita T, Shimizu T, Tayama Y, Kanozawa K, Kato H, Matsuda A, Hasegawa H, Elewa U, Fernandez B, Egido J, Ortiz A, Rottembourg J, Guerin A, Diaconita M, Dansaert A, Chakraborty J, Prabhu R, Nagaraju SP, Bairy M, Satyamoorthy K, Kosuru S, Parthasarathy R, Tomilina N, Zhilinskaya T, Stolyarevich E, Silva AP, Fragoso A, Guilherme P, Silva C, Santos N, Rato F, Camacho A, Neves P, Pasko N, Strakosha A, Toti F, Dedej T, Marku N, Petrela E, Zekollari E, Kacorri V, Thereska N, Roumeliotis SK, Roumeliotis AK, Theodoridis M, Tavridou A, Panagoutsos S, Passadakis P, Vargemezis V, Kim IY, Lee SB, Lee DW, Kim MJ, Shin MJ, Rhee H, Yang BY, Song SH, Seong EY, Kwak IS, Celebi K, Sengul E, Cekmen MB, Yilmaz A, Sonikian M, Dona A, Skarakis J, Miha T, Trompouki S, Karaitianou A, Spiliopoulou C, Dimas GG, Iliadis FS, Tegos TJ, Spiroglou SG, Kanellos IE, Fotiadis SD, Didaggelos TP, Savopoulos CG, Hatzitolios AI, Grekas DM, Hsu YH, Huang MC, Chang HY, Shin SJ, Wahlqvist ML, Chang YL, Hsu KC, Hsu CC, Miarka P, Grabowska-Polanowska B, Faber J, Skowron M, Pietrzycka A, Walus-Miarka M, Sliwka I, Sulowicz W. DIABETES CLINICAL. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu169] [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: 11/13/2022] Open
|
16
|
Tsuda A, Ishimura E, Ohno Y, Ichii M, Nakatani S, Mori K, Fukumoto S, Emoto M, Inaba M. Significant association of poor glycemic control with increased resistance in efferent arterioles--study of inulin and para-aminohippuric acid clearance in humans. Diabetes Res Clin Pract 2014; 104:234-40. [PMID: 24598266 DOI: 10.1016/j.diabres.2014.01.030] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 11/14/2013] [Accepted: 01/28/2014] [Indexed: 02/08/2023]
Abstract
AIMS To examine whether glomerular hemodynamic parameters in humans are associated with glycemic control indices, by simultaneously measuring clearance of inulin (Cin) and para-aminohippuric acid (CPHA). METHODS Thirty-one subjects (age 55.4±14.7 years; 15 men and 16 women; 21 diabetics and 10 non-diabetics) were enrolled. Cin and CPAH were measured simultaneously. Afferent arteriolar resistance (Ra), efferent arteriolar resistance (Re), glomerular hydrostatic pressure (Pglo) and glomerular filtration fraction (FF) were calculated according to Gomez' formula. RESULTS FF correlated significantly and positively with fasting plasma glucose (FPG), hemoglobin A1c (HbA1c) and glycated albumin (GA) (r=0.396, p=0.0303; r=0.587, p=0.0007; r=0.525, p=0.0070, respectively). Pglo correlated significantly and positively with FPG, HbA1c and GA (r=0.572, p=0.0008; r=0.535, p=0.0019; r=0.540, p=0.0053, respectively). Although there was no significant correlation between Ra and glycemic control indices, Re correlated significantly and positively with HbA1c and GA (r=0.499, p=0.0043; r=0.592, p=0.0018, respectively). FF, Pglo and Re were associated significantly with HbA1c and GA after adjustment for age. CONCLUSIONS These results demonstrate, in humans, that poor glycemic control is associated with increased Re, but not Ra. It is suggested that increased Re causes increased Pglo, leading to increased FF. Thus, hemodynamic abnormalities with poor glycemic control may be related to glomerular hypertension in humans.
Collapse
Affiliation(s)
- A Tsuda
- Department of Endocrinology, Metabolism and Molecular Medicine, Japan
| | - E Ishimura
- Department of Nephrology, Osaka City University, Graduate School of Medicine, Osaka, Japan.
| | - Y Ohno
- Department of Endocrinology, Metabolism and Molecular Medicine, Japan
| | - M Ichii
- Department of Endocrinology, Metabolism and Molecular Medicine, Japan
| | - S Nakatani
- Department of Endocrinology, Metabolism and Molecular Medicine, Japan
| | - K Mori
- Department of Endocrinology, Metabolism and Molecular Medicine, Japan
| | - S Fukumoto
- Department of Endocrinology, Metabolism and Molecular Medicine, Japan
| | - M Emoto
- Department of Endocrinology, Metabolism and Molecular Medicine, Japan
| | - M Inaba
- Department of Endocrinology, Metabolism and Molecular Medicine, Japan
| |
Collapse
|
17
|
Hanazono K, Nishimori T, Fukumoto S, Kawamura Y, Endo Y, Kadosawa T, Uchide T. Immunohistochemical expression of p63, Ki67 andβ-catenin in canine transitional cell carcinoma and polypoid cystitis of the urinary bladder. Vet Comp Oncol 2014; 14:263-9. [DOI: 10.1111/vco.12095] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Revised: 02/28/2014] [Accepted: 03/31/2014] [Indexed: 12/13/2022]
Affiliation(s)
- K. Hanazono
- Department of Small Animal Clinical Sciences, School of Veterinary Medicine; Rakuno Gakuen University; Hokkaido Japan
| | - T. Nishimori
- Department of Small Animal Clinical Sciences, School of Veterinary Medicine; Rakuno Gakuen University; Hokkaido Japan
| | - S. Fukumoto
- Department of Small Animal Clinical Sciences, School of Veterinary Medicine; Rakuno Gakuen University; Hokkaido Japan
| | - Y. Kawamura
- Department of Veterinary Pathology, School of Veterinary Medicine; Rakuno Gakuen University; Hokkaido Japan
| | - Y. Endo
- Department of Small Animal Clinical Sciences, School of Veterinary Medicine; Rakuno Gakuen University; Hokkaido Japan
| | - T. Kadosawa
- Department of Small Animal Clinical Sciences, School of Veterinary Medicine; Rakuno Gakuen University; Hokkaido Japan
| | - T. Uchide
- Department of Small Animal Clinical Sciences, School of Veterinary Medicine; Rakuno Gakuen University; Hokkaido Japan
| |
Collapse
|
18
|
Nagamine R, Hanada Y, Kondo M, Fukumoto S, Shuto T, Nakashima Y, Hirata G, Katayama A, Iwamoto Y. Quantification of bone volume on radiographs using NIH Image. Mod Rheumatol 2014; 10:220-4. [DOI: 10.3109/s101650070006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
19
|
Domon-Tawaraya H, Nakajo K, Washio J, Ashizawa T, Ichino T, Sugawara H, Fukumoto S, Takahashi N. Divalent cations enhance fluoride binding to Streptococcus mutans and Streptococcus sanguinis cells and subsequently inhibit bacterial acid production. Caries Res 2012. [PMID: 23207788 DOI: 10.1159/000344014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
One preventive effect of topical fluoride application is derived from the fact that fluoride can inhibit bacterial acid production. Furthermore, divalent cations such as Ca(2+) and Mg(2+) increase the binding of fluoride to bacterial cells. These findings suggest that exposure of oral bacteria to fluoride in the presence of divalent cations increases fluoride binding to bacterial cells and subsequently enhances fluoride-induced inhibition of bacterial acid production. This study investigated the effects of fluoride exposure (0-20,000 ppm F) in the presence of Ca(2+) or Mg(2+) prior to glucose challenge on pH fall ability by bacterial sugar fermentation, as well as fluoride binding to bacterial cells by exposure to fluoride, and fluoride release from bacterial cells during bacterial sugar fermentation, using caries-related bacteria, Streptococcus mutans and Streptococcus sanguinis. The pH fall by both streptococci was inhibited by exposure to over 250 ppm F in the presence of Ca(2+) (p < 0.01), whereas in the presence of Mg(2+), the pH fall by S. mutans and S. sanguinis was inhibited after exposure to over 250 and 950 ppm F, respectively (p < 0.05). The amounts of fluoride binding to and released from streptococcal cells increased with the concentration of fluoride the cells were exposed to in the presence of Mg(2+), but were high enough even after 250 ppm F exposure in the presence of Ca(2+). The enhanced inhibition of acid production in the presence of divalent cations is probably due to the improved efficiency of fluoride binding to bacterial cells being improved via these divalent cations.
Collapse
Affiliation(s)
- H Domon-Tawaraya
- Division of Pediatric Dentistry, Department of Lifelong Oral Health Science, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | | | | | | | | | | | | | | |
Collapse
|
20
|
Nakashima T, Kajiki Y, Fukumoto S, Taguchi M, Nagao S, Hirota S, Kawai T. Efficient Oxidative Cycloreversion Reaction of Photochromic Dithiazolythiazole. J Am Chem Soc 2012; 134:19877-83. [DOI: 10.1021/ja309275q] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Takuya Nakashima
- Graduate
School of Materials Science, Nara Institute of Science and Technology, NAIST, Ikoma,
Nara 630-0192, Japan
| | - Yoshiyuki Kajiki
- Graduate
School of Materials Science, Nara Institute of Science and Technology, NAIST, Ikoma,
Nara 630-0192, Japan
| | - Sayo Fukumoto
- Graduate
School of Materials Science, Nara Institute of Science and Technology, NAIST, Ikoma,
Nara 630-0192, Japan
| | - Maki Taguchi
- Graduate
School of Materials Science, Nara Institute of Science and Technology, NAIST, Ikoma,
Nara 630-0192, Japan
| | - Satoshi Nagao
- Graduate
School of Materials Science, Nara Institute of Science and Technology, NAIST, Ikoma,
Nara 630-0192, Japan
| | - Shun Hirota
- Graduate
School of Materials Science, Nara Institute of Science and Technology, NAIST, Ikoma,
Nara 630-0192, Japan
| | - Tsuyoshi Kawai
- Graduate
School of Materials Science, Nara Institute of Science and Technology, NAIST, Ikoma,
Nara 630-0192, Japan
| |
Collapse
|
21
|
Sakano M, Otsu K, Fujiwara N, Fukumoto S, Yamada A, Harada H. Cell dynamics in cervical loop epithelium during transition from crown to root: implications for Hertwig's epithelial root sheath formation. J Periodontal Res 2012; 48:262-7. [PMID: 22973989 DOI: 10.1111/jre.12003] [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] [Accepted: 07/30/2012] [Indexed: 01/10/2023]
Abstract
BACKGROUND AND OBJECTIVE Some clinical cases of hypoplastic tooth root are congenital. Because the formation of Hertwig's epithelial root sheath (HERS) is an important event for root development and growth, we have considered that understanding the HERS developmental mechanism contributes to elucidate the causal factors of the disease. To find integrant factors and phenomenon for HERS development and growth, we studied the proliferation and mobility of the cervical loop (CL). MATERIAL AND METHODS We observed the cell movement of CL by the DiI labeling and organ culture system. To examine cell proliferation, we carried out immunostaining of CL and HERS using anti-Ki67 antibody. Cell motility in CL was observed by tooth germ slice organ culture using green fluorescent protein mouse. We also examined the expression of paxillin associated with cell movement. RESULTS Imaging using DiI labeling showed that, at the apex of CL, the epithelium elongated in tandem with the growth of outer enamel epithelium (OEE). Cell proliferation assay using Ki67 immunostaining showed that OEE divided more actively than inner enamel epithelium (IEE) at the onset of HERS formation. Live imaging suggested that mobility of the OEE and cells in the apex of CL were more active than in IEE. The expression of paxillin was observed strongly in OEE and the apex of CL. CONCLUSION The more active growth and movement of OEE cells contributed to HERS formation after reduction of the growth of IEE. The expression pattern of paxillin was involved in the active movement of OEE and HERS. The results will contribute to understand the HERS formation mechanism and elucidate the cause of anomaly root.
Collapse
Affiliation(s)
- M Sakano
- Division of Developmental Biology and Regenerative Medicine, Department of Anatomy, Iwate Medical University, Yahaba, Iwate, Japan
| | | | | | | | | | | |
Collapse
|
22
|
Coentrao L, Ribeiro C, Santos-Araujo C, Neto R, Pestana M, Kleophas W, Kleophas W, Karaboyas A, LI Y, Bommer J, Pisoni R, Robinson B, Port F, Celik G, Burcak Annagur B, Yilmaz M, Demir T, Kara F, Trigka K, Dousdampanis P, Vaitsis N, Aggelakou-Vaitsi S, Turkmen K, Guney I, Turgut F, Altintepe L, Tonbul HZ, Abdel-Rahman E, Sclauzero P, Galli G, Barbati G, Carraro M, Panzetta GO, Van Diepen M, Schroijen M, Dekkers O, Dekker F, Sikole A, Severova- Andreevska G, Trajceska L, Gelev S, Amitov V, Pavleska- Kuzmanovska S, Karaboyas A, Rayner H, LI Y, Vanholder R, Pisoni R, Robinson B, Port F, Hecking M, Jung B, Leung M, Huynh F, Chung T, Marchuk S, Kiaii M, Er L, Werb R, Chan-Yan C, Beaulieu M, Malindretos P, Makri P, Zagkotsis G, Koutroumbas G, Loukas G, Nikolaou E, Pavlou M, Gourgoulianni E, Paparizou M, Markou M, Syrgani E, Syrganis C, Raimann J, Usvyat LA, Bhalani V, Levin NW, Kotanko P, Huang X, Stenvinkel P, Qureshi AR, Riserus U, Cederholm T, Barany P, Heimburger O, Lindholm B, Carrero JJ, Chang JH, Sung JY, Jung JY, Lee HH, Chung W, Kim S, Han JS, Kim S, Chang JH, Jung JY, Chung W, Na KY, Raimann J, Usvyat LA, Kotanko P, Levin NW, Fragoso A, Pinho A, Malho A, Silva AP, Morgado E, Leao Neves P, Joki N, Tanaka Y, Iwasaki M, Kubo S, Hayashi T, Takahashi Y, Hirahata K, Imamura Y, Hase H, Castledine C, Gilg J, Rogers C, Ben-Shlomo Y, Caskey F, Na KY, Kim S, Chung W, Jung JY, Chang JH, Lee HH, Sandhu JS, Bajwa GS, Kansal S, Sandhu J, Jayanti A, Nikam M, Ebah L, Summers A, Mitra S, Agar J, Perkins A, Simmonds R, Tjipto A, Amet S, Launay-Vacher V, Laville M, Tricotel A, Frances C, Stengel B, Gauvrit JY, Grenier N, Reinhardt G, Clement O, Janus N, Rouillon L, Choukroun G, Deray G, Bernasconi A, Waisman R, Montoya AP, Liste AA, Hermes R, Muguerza G, Heguilen R, Iliescu EL, Martina V, Rizzo MA, Magenta P, Lubatti L, Rombola G, Gallieni M, Loirat C, Loirat C, Mellerio H, Labeguerie M, Andriss B, Savoye E, Lassale M, Jacquelinet C, Alberti C, Aggarwal Y, Baharani J, Tabrizian S, Ossareh S, Zebarjadi M, Azevedo P, Travassos F, Frade I, Almeida M, Queiros J, Silva F, Cabrita A, Rodrigues R, Couchoud C, Kitty J, Benedicte S, Fergus C, Cecile C, Couchoud C, Sahar B, Emmanuel V, Christian J, Rene E, Barahimi H, Mahdavi-Mazdeh M, Nafar M, Petruzzi M, De Benedittis M, Sciancalepore M, Gargano L, Natale P, Vecchio MC, Saglimbene V, Pellegrini F, Gentile G, Stroumza P, Frantzen L, Leal M, Torok M, Bednarek A, Dulawa J, Celia E, Gelfman R, Hegbrant J, Wollheim C, Palmer S, Johnson DW, Ford PJ, Craig JC, Strippoli GF, Ruospo M, El Hayek B, Hayek B, Baamonde E, Bosch E, Ramirez JI, Perez G, Ramirez A, Toledo A, Lago MM, Garcia-Canton C, Checa MD, Canaud B, Canaud B, Lantz B, Pisoni R, Granger-Vallee A, Lertdumrongluk P, Molinari N, Ethier J, Jadoul M, Gillespie B, Port F, Bond C, Wang S, Alfieri T, Braunhofer P, Newsome B, Wang M, Bieber B, Guidinger M, Bieber B, Wang M, Zuo L, Pisoni R, Yu X, Yang X, Qian J, Chen N, Albert J, Yan Y, Ramirez S, Bernasconi A, Waisman R, Beresan M, Lapidus A, Canteli M, Heguilen R, Tong A, Palmer S, Manns B, Craig J, Ruospo M, Gargano L, Strippoli G, Mortazavi M, Vahdatpour B, Shahidi S, Ghasempour A, Taheri D, Dolatkhah S, Emami Naieni A, Ghassami M, Khan M, Abdulnabi K, Pai P, Ruospo M, Petruzzi M, De Benedittis M, Sciancalepore M, Gargano L, Vecchio M, Saglimbene V, Natale P, Pellegrini F, Gentile G, Stroumza P, Frantzen L, Leal M, Torok M, Bednarek A, Dulawa J, Celia E, Gelfman R, Hegbrant J, Wollheim C, Palmer S, Johnson DW, Ford PJ, Craig JC, Strippoli GF, Muqueet MA, Muqueet MA, Hasan MJ, Kashem MA, Dutta PK, Liu FX, Noe L, Quock T, Neil N, Inglese G, Qian J, Bieber B, Guidinger M, Bieber B, Chen N, Yan Y, Pisoni R, Wang M, Zuo L, Yu X, Yang X, Wang M, Albert J, Ramirez S, Ossareh S, Motamed Najjar M, Bahmani B, Shafiabadi A, Helve J, Haapio M, Groop PH, Gronhagen-Riska C, Finne P, Helve J, Haapio M, Sund R, Groop PH, Gronhagen-Riska C, Finne P, Cai M, Baweja S, Clements A, Kent A, Reilly R, Taylor N, Holt S, Mcmahon L, Usvyat LA, Carter M, Van der Sande FM, Kooman J, Raimann J, Levin NW, Kotanko P, Usvyat LA, Malhotra R, Ouellet G, Penne EL, Raimann J, Thijssen S, Levin NW, Kotanko P, Etter M, Tashman A, Guinsburg A, Grassmann A, Barth C, Marelli C, Marcelli D, Van der Sande FM, Von Gersdorff G, Bayh I, Kooman J, Scatizzi L, Lam M, Schaller M, Thijssen S, Toffelmire T, Wang Y, Sheppard P, Usvyat LA, Levin NW, Kotanko P, Neri L, Andreucci VA, Rocca-Rey LA, Bertoli SV, Brancaccio D, Tjipto A, Simmonds R, Agar J, Huang X, Stenvinkel P, Qureshi AR, Riserus U, Cederholm T, Barany P, Heimburger O, Lindholm B, Carrero JJ, Vecchio M, Palmer S, De Berardis G, Craig J, Lucisano G, Johnson D, Pellegrini F, Nicolucci A, Sciancalepore M, Saglimbene V, Gargano L, Bonifati C, Ruospo M, Navaneethan SD, Montinaro V, Stroumza P, Zsom M, Torok M, Celia E, Gelfman R, Bednarek-Skublewska A, Dulawa J, Graziano G, Gentile G, Ferrari JN, Santoro A, Zucchelli A, Triolo G, Maffei S, Hegbrant J, Wollheim C, De Cosmo S, Manfreda VM, Strippoli GF, Janus N, Janus N, Launay-Vacher V, Juillard L, Rousset A, Butel F, Girardot-Seguin S, Deray G, Hannedouche T, Isnard M, Berland Y, Vanhille P, Ortiz JP, Janin G, Nicoud P, Touam M, Bruce E, Rouillon L, Laville M, Janus N, Juillard L, Rousset A, Butel F, Girardot-Seguin S, Deray G, Hannedouche T, Isnard M, Berland Y, Vanhille P, Ortiz JP, Janin G, Nicoud P, Touam M, Bruce E, Rouillon L, Laville M, Janus N, Launay-Vacher V, Juillard L, Rousset A, Butel F, Girardot-Seguin S, Deray G, Hannedouche T, Isnard M, Berland Y, Vanhille P, Ortiz JP, Janin G, Nicoud P, Touam M, Bruce E, Rouillon L, Laville M, Grace B, Clayton P, Cass A, Mcdonald S, Baharani J, Furumatsu Y, Kitamura T, Fujii N, Ogata S, Nakamoto H, Iseki K, Tsubakihara Y, Chien CC, Wang JJ, Hwang JC, Wang HY, Kan WC, Kuster N, Kuster N, Patrier L, Bargnoux AS, Morena M, Dupuy AM, Badiou S, Canaud B, Cristol JP, Desmet JM, Fernandes V, Collart F, Spinogatti N, Pochet JM, Dratwa M, Goffin E, Nortier J, Zilisteanu DS, Voiculescu M, Rusu E, Achim C, Bobeica R, Balanica S, Atasie T, Florence S, Anne-Marie S, Michel L, Cyrille C, Emmanuel V, Strakosha A, Strakosha A, Pasko N, Kodra S, Thereska N, Lowney A, Lowney E, Grant R, Murphy M, Casserly L, O' Brien T, Plant WD, Radic J, Radic J, Ljutic D, Kovacic V, Radic M, Dodig-Curkovic K, Sain M, Jelicic I, Fujii N, Hamano T, Nakano C, Yonemoto S, Okuno A, Katayama M, Isaka Y, Nordio M, Limido A, Postorino M, Nichelatti M, Khil M, Dudar I, Khil V, Shifris I, Momtaz M, Soliman AR, El Lawindi MI, Dzekova-Vidimliski P, Pavleska-Kuzmanovska S, Trajceska L, Nikolov I, Selim G, Gelev S, Amitov V, Sikole A, Shoji T, Kakiya R, Hayashi T, Tatsumi-Shimomura N, Tsujimoto Y, Tabata T, Shima H, Mori K, Fukumoto S, Tahara H, Koyama H, Emoto M, Ishimura E, Nishizawa Y, Inaba M. Epidemiology and outcome research in CKD 5D. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs227] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
23
|
Fukumoto S, Nakashima T, Kawai T. Intramolecular Hydrogen Bonding in a Triangular Dithiazolyl-Azaindole for Efficient Photoreactivity in Polar and Nonpolar Solvents. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100676] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
24
|
Ikarashi K, Fujiwara H, Yamazaki Y, Goto JI, Kaneko K, Kato H, Fujii S, Sasaki H, Fukumoto S, Furukawa K, Waki H, Furukawa K. Impaired hippocampal long-term potentiation and failure of learning in 1,4-N-acetylgalactosaminyltransferase gene transgenic mice. Glycobiology 2011; 21:1373-81. [DOI: 10.1093/glycob/cwr090] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
25
|
|
26
|
Fukumoto S, Nakashima T, Kawai T. Photon-Quantitative Reaction of a Dithiazolylarylene in Solution. Angew Chem Int Ed Engl 2011; 50:1565-8. [DOI: 10.1002/anie.201006844] [Citation(s) in RCA: 148] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2010] [Indexed: 11/07/2022]
|
27
|
Ito N, Shimizu Y, Suzuki H, Saito T, Okamoto T, Hori M, Akahane M, Fukumoto S, Fujita T. Clinical utility of systemic venous sampling of FGF23 for identifying tumours responsible for tumour-induced osteomalacia. J Intern Med 2010; 268:390-4. [PMID: 20698924 DOI: 10.1111/j.1365-2796.2010.02262.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
28
|
Inoue A, Ishimoto O, Fukumoto S, Usui K, Suzuki T, Yokouchi H, Maemondo M, Kanbe M, Ogura S, Harada T, Oizumi S, Harada M, Sugawara S, Fukuhara T, Nukiwa T. A phase II study of amrubicin combined with carboplatin for elderly patients with small-cell lung cancer: North Japan Lung Cancer Study Group Trial 0405. Ann Oncol 2010; 21:800-803. [DOI: 10.1093/annonc/mdp384] [Citation(s) in RCA: 30] [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] [Indexed: 11/12/2022] Open
|
29
|
Hatakeyama J, Fukumoto S, Nakamura T, Haruyama N, Suzuki S, Hatakeyama Y, Shum L, Gibson CW, Yamada Y, Kulkarni AB. Synergistic roles of amelogenin and ameloblastin. J Dent Res 2009; 88:318-22. [PMID: 19407150 DOI: 10.1177/0022034509334749] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Amelogenin and ameloblastin, the major enamel matrix proteins, are important for enamel mineralization. To identify their synergistic roles in enamel development, we generated Amel X(-/-)/Ambn(-/-) mice. These mice showed additional enamel defects in comparison with Amel X(-/-) or Ambn(-/-) mice. In 7-day-old Amel X(-/-)/Ambn(-/-) mice, not only was the ameloblast layer irregular and detached from the enamel surface, as in Ambn(-/-), but also, the enamel width was significantly reduced in the double-null mice as compared with Amel X(-/-) or Ambn(-/-) mice. Proteomic analysis of the double-null teeth revealed increased levels of RhoGDI (Arhgdia), a Rho-family-specific guanine nucleotide dissociation inhibitor, which is involved in important cellular processes, such as cell attachment. Both Amel X(-/-)/Ambn(-/-) mice and Ambn(-/-) mice displayed positive staining with RhoGDI antibody in the irregularly shaped ameloblasts detached from the matrix. Ameloblastin-regulated expression of RhoGDI suggests that Rho-mediated signaling pathway might play a role in enamel formation.
Collapse
Affiliation(s)
- J Hatakeyama
- Functional Genomics Section, Laboratory of Cell and Developmental Biology, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
30
|
Oizumi S, Akie K, Ogura S, Shinagawa N, Fukumoto S, Harada M, Kojima T, Kinoshita I, Dosaka-Akita H, Isobe H, Nishimura M. Phase II study of irinotecan plus S-1 combination for previously untreated advanced non-small cell lung cancer: Hokkaido Lung Cancer Clinical Study Group 0601. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.e19012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e19012 Background: Platinum-containing therapy is a standard first-line treatment for advanced non-small cell lung cancer (NSCLC). Platinum-free regimens can be alternative if they can provide similar efficacy with better tolerability. This study evaluated the efficacy and safety for combination of irinotecan and S-1, a newly developed oral 5-fluorouracil derivative, for chemotherapy-naïve advanced NSCLC. Methods: In this multicenter phase II trial, we initially planned to enroll 40 patients. Chemotherapy consisted of 4-week cycles of irinotecan (100 mg/m2 IV, day 1 and 15) and S-1 (80 mg/m2 orally, day 1–14). Primary end point was response rate; secondary endpoints were overall survival (OS), progression-free survival (PFS), and safety. Association of UGT1A1 genotypes (*6 and *28) with frequency of severe toxicity was also examined. Results: A total of 112 cycles was administered into 40 patients (median, 3 cycles: range, 1–6). Median age was 64 years (range, 42–75); 29 patients (73%) had adenocarcinoma, and 8 patients (20%) had squamous cell carcinoma. Majority of the patients (32 cases, 80%) had stage IV disease. Twelve patients exhibited partial response (PR), and 17 patients exhibited stable disease (SD), resulting in response rate of 30% [95% confidence interval (95% CI), 16.6–46.5] and disease control rate of 72.5% (95% CI, 56.1–85.4). Median OS and PFS were 13.8 months (95% CI, 10.7–16.9) and 4.7 months (95% CI, 3.4–6.0), respectively. Hematological toxicities of grade 3 or 4 were neutropenia (32.5%) and anemia (5.0%). The most common non-hematologic toxicities of grade 3 or 4 included diarrhea (15.0%) and anorexia (17.5%). There were no treatment-related deaths. Among the 40 patients, there were 1 homozygous and 8 heterozygous for UGT1A1*6, whereas 7 heterozygous for UGT1A1*28; none of the patients had both genotypes. Patients with homozygous or heterozygous for UGT1A1*6 showed a trend for high incidence of grade 3 diarrhea (p = 0.055). No association of UGT1A1*28 with severe toxicity was observed in this study. Conclusions: Irinotecan and S-1 combination is an alternative treatment with tolerable toxicity for previously untreated advanced NSCLC. No significant financial relationships to disclose.
Collapse
Affiliation(s)
- S. Oizumi
- Hokkaido University School of Medicine, Sapporo, Japan; Sapporo City General Hospital, Sapporo, Japan; Hokkaido Cancer Center, Sapporo, Japan; KKR Sapporo Medical Center, Sapporo, Japan
| | - K. Akie
- Hokkaido University School of Medicine, Sapporo, Japan; Sapporo City General Hospital, Sapporo, Japan; Hokkaido Cancer Center, Sapporo, Japan; KKR Sapporo Medical Center, Sapporo, Japan
| | - S. Ogura
- Hokkaido University School of Medicine, Sapporo, Japan; Sapporo City General Hospital, Sapporo, Japan; Hokkaido Cancer Center, Sapporo, Japan; KKR Sapporo Medical Center, Sapporo, Japan
| | - N. Shinagawa
- Hokkaido University School of Medicine, Sapporo, Japan; Sapporo City General Hospital, Sapporo, Japan; Hokkaido Cancer Center, Sapporo, Japan; KKR Sapporo Medical Center, Sapporo, Japan
| | - S. Fukumoto
- Hokkaido University School of Medicine, Sapporo, Japan; Sapporo City General Hospital, Sapporo, Japan; Hokkaido Cancer Center, Sapporo, Japan; KKR Sapporo Medical Center, Sapporo, Japan
| | - M. Harada
- Hokkaido University School of Medicine, Sapporo, Japan; Sapporo City General Hospital, Sapporo, Japan; Hokkaido Cancer Center, Sapporo, Japan; KKR Sapporo Medical Center, Sapporo, Japan
| | - T. Kojima
- Hokkaido University School of Medicine, Sapporo, Japan; Sapporo City General Hospital, Sapporo, Japan; Hokkaido Cancer Center, Sapporo, Japan; KKR Sapporo Medical Center, Sapporo, Japan
| | - I. Kinoshita
- Hokkaido University School of Medicine, Sapporo, Japan; Sapporo City General Hospital, Sapporo, Japan; Hokkaido Cancer Center, Sapporo, Japan; KKR Sapporo Medical Center, Sapporo, Japan
| | - H. Dosaka-Akita
- Hokkaido University School of Medicine, Sapporo, Japan; Sapporo City General Hospital, Sapporo, Japan; Hokkaido Cancer Center, Sapporo, Japan; KKR Sapporo Medical Center, Sapporo, Japan
| | - H. Isobe
- Hokkaido University School of Medicine, Sapporo, Japan; Sapporo City General Hospital, Sapporo, Japan; Hokkaido Cancer Center, Sapporo, Japan; KKR Sapporo Medical Center, Sapporo, Japan
| | - M. Nishimura
- Hokkaido University School of Medicine, Sapporo, Japan; Sapporo City General Hospital, Sapporo, Japan; Hokkaido Cancer Center, Sapporo, Japan; KKR Sapporo Medical Center, Sapporo, Japan
| |
Collapse
|
31
|
Aizawa S, Miyasawa-Hori H, Nakajo K, Washio J, Mayanagi H, Fukumoto S, Takahashi N. Effects of alpha-amylase and its inhibitors on acid production from cooked starch by oral streptococci. Caries Res 2009; 43:17-24. [PMID: 19136828 DOI: 10.1159/000189703] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2008] [Accepted: 09/29/2008] [Indexed: 11/19/2022] Open
Abstract
This study evaluated acid production from cooked starch by Streptococcus mutans, Streptococcus sobrinus, Streptococcus sanguinis and Streptococcus mitis, and the effects of alpha-amylase inhibitors (maltotriitol and acarbose) and xylitol on acid production. Streptococcal cell suspensions were anaerobically incubated with various carbohydrates that included cooked potato starch in the presence or absence of alpha-amylase. Subsequently, the fall in pH and the acid production rate at pH 7.0 were measured. In addition, the effects of adding alpha-amylase inhibitors and xylitol to the reaction mixture were evaluated. In the absence of alpha-amylase, both the fall in pH and the acid production rate from cooked starch were small. On the other hand, in the presence of alpha-amylase, the pH fell to 3.9-4.4 and the acid production rate was 0.61-0.92 micromol per optical density unit per min. These values were comparable to those for maltose. When using cooked starch, the fall in pH by S. sanguinis and S. mitis was similar to that by S. mutans and S. sobrinus. For all streptococci, alpha-amylase inhibitors caused a decrease in acid production from cooked starch, although xylitol only decreased acid production by S. mutans and S. sobrinus. These results suggest that cooked starch is potentially acidogenic in the presence of alpha-amylase, which occurs in the oral cavity. In terms of the acidogenic potential of cooked starch, S. sanguinis and S. mitis were comparable to S. mutans and S. sobrinus. Alpha-amylase inhibitors and xylitol might moderate this activity.
Collapse
Affiliation(s)
- S Aizawa
- Division of Pediatric Dentistry, Tohoku University Graduate School of Dentistry, Aoba-ku, Sendai, Miyagi, Japan
| | | | | | | | | | | | | |
Collapse
|
32
|
Urakawa I, Yamazaki Y, Shimada T, Iijima K, Hasegawa H, Okawa K, Fujita T, Fukumoto S, Yamashita T. The Antisenescence Protein Klotho Is Necessary for FGF23-Induced Phosphaturia. J Am Soc Nephrol 2007; 18:663-669. [PMID: 37001014 DOI: 10.1681/01.asn.0000926868.48235.3d] [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: 03/30/2023] Open
|
33
|
Fukumoto S, Ueda T, Igase K, Ohue S, Kumon Y, Ohnishi T. Stenting procedure for sinus stenosis with transverse-sigmoid dural arteriovenous fistulas. A case report. Interv Neuroradiol 2006; 12:178-84. [PMID: 20569627 DOI: 10.1177/15910199060120s131] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2005] [Accepted: 12/15/2005] [Indexed: 11/16/2022] Open
Abstract
SUMMARY We reported the dural AVF case with sinus stenosis, that was entirely treated through the stenting procedure. 61-year-old male had been realizing the attack which causes bilateral visual problem. He would have suffered from the intracranial hypertension caused by dural AVF in the right transverse sinus and left transverse sinus stenosis.We performed TVE and sinus stenting, then used the antiplatelet and the anticoagulant. However, six months later, he suffered from SAH due to recurrence of dural AVF. We performed TVE again, denser packing than usual. Two years later, he have no symptom, angiographically, there was no recurrence of dural AVF and patency of stented sinus. We think denser embolizations should have performed in case of dural AVF with sinus stenting.
Collapse
Affiliation(s)
- S Fukumoto
- Department of Neurological Surgery, Ehime University School of Medicine, Ehime, Japan -
| | | | | | | | | | | |
Collapse
|
34
|
Verdida RA, Xuan X, Fukumoto S, Huang X, Zhou J, Igarashi I, Claveria FG, Nagasawa H. Development of a practical immunochromatographic test with recombinant P50 for the diagnosis of Babesia gibsoni infection in dogs. Parasitology 2005; 131:769-74. [PMID: 16336730 DOI: 10.1017/s0031182005008401] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2005] [Revised: 05/18/2005] [Accepted: 05/24/2005] [Indexed: 11/06/2022]
Abstract
An immunochromatographic test (ICT), using recombinant truncated P50 (P50t), for the detection of antibodies to Babesia gibsoni was developed and evaluated. Whereas all sera from specific pathogen-free dogs were clearly negative, all sera from dogs experimentally infected with B. gibsoni were clearly positive in the ICT. In addition, the ICT detected no cross-reactivity with sera from dogs experimentally infected with closely related parasites, B. canis canis, B. canis vogeli, and B. canis rossi, or with Neospora caninum, and Leishmania infantum. Sequential sera from a dog experimentally infected with B. gibsoni were tested with the ICT; it was shown that the specific antibodies are detectable as early as 6 days post-infection (p.i.) and that strong antibody responses remained until the end of the experiment (144 days p.i.). To evaluate the clinical application of the ICT, a total of 54 serum samples collected from domestic dogs that had been identified as having signs of anaemia at veterinary hospitals in Japan, were tested with the ICT, the previously established enzyme-linked immunosorbent assay (ELISA) and with the indirect fluorescent antibody test (IFAT). Twenty-four of the tested samples (44.4%) were positive in both ICT and ELISA, and (51.8%) in IFAT. The concordance between ELISA and ICT was found to be 100%, and 85.7% with IFAT. Taken together, the results above suggest that the ICT using P50t is rapid, simple, accurate, and suitable for use at clinical sites for the diagnosis of B. gibsoni infection in dogs.
Collapse
Affiliation(s)
- R A Verdida
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan
| | | | | | | | | | | | | | | |
Collapse
|
35
|
Liao M, Xuan X, Huang X, Shirafuji H, Fukumoto S, Hirata H, Suzuki H, Fujisaki K. Identification and characterization of cross-reactive antigens from Neospora caninum and Toxoplasma gondii. Parasitology 2005; 130:481-8. [PMID: 15991490 DOI: 10.1017/s0031182004006948] [Citation(s) in RCA: 33] [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: 11/06/2022]
Abstract
Murine monoclonal antibodies (mAbs) against Neospora caninum tachyzoites were produced to identify the cross-reactive antigens between N. caninum and Toxoplasma gondii. Ten mAbs recognizing cross-reactive antigens of both parasites were obtained and tentatively classified into 6 different groups based on their reactivity patterns in an indirect fluorescent antibody test and Western blot analysis. Three mAbs in group 1 recognized antigens located on the surface of parasites with molecular masses ranging from 28 to 76 kDa; one mAb in group 2 recognized antigens located on interior organelles of parasites with a molecular mass of 50 kDa; one mAb in group 3 recognized antigens located on interior organelles of parasites with molecular masses of 35 kDa and 14 kDa; three mAbs in group 4 recognized antigens located on interior organelles with a molecular mass of 64 kDa; one mAb in group 5 recognized antigens located on the surface of parasites with an unknown molecular mass; one mAb in group 6 recognized antigens located on the apical end of parasites with an unknown molecular mass. The mAbs in groups 1, 2, 3, and 5 showed inhibitory effects on the growth of the two parasites in vitro in a dose-dependent manner. A cDNA expression library prepared from N. caninum tachyzoite mRNA was immunoscreened with the mAb panel. Three kinds of proteins, protein disulfide isomerase (PDI), heat-shock protein 70 (HSP70), and ribosomal protein 1 (RP1), were identified as cross-reactive antigens recognized by mAbs in groups 2, 3, and 4, respectively. Some of the proteins could be useful in developing vaccines or drugs for controlling the diseases caused by the two parasites.
Collapse
Affiliation(s)
- M Liao
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan.
| | | | | | | | | | | | | | | |
Collapse
|
36
|
Shoji T, Hatsuda S, Shinohara K, Kimoto E, Araki T, Maeno T, Mori K, Fukumoto S, Koyama H, Emoto M, Nishizawa Y. W17-P-017 Interrelationship between indices of arterial stiffness (PWV and stiffness parameter β) in healthy subjects. ATHEROSCLEROSIS SUPP 2005. [DOI: 10.1016/s1567-5688(05)80510-0] [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]
|
37
|
Hatsuda S, Shoji T, Shinohara K, Kimoto E, Yokoyama H, Mori K, Fukumoto S, Koyama H, Emoto M, Nishizawa Y. T01-P-010 Regional arterial stiffness related to ischemic heart disease in type 2 diabetes mellitus. ATHEROSCLEROSIS SUPP 2005. [DOI: 10.1016/s1567-5688(05)80527-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
38
|
Kishimoto Y, Fukumoto S, Nishihara S, Mizumura H, Hirai K, Teshima R. Gene expression relevant to osteoclastogenesis in the synovium and bone marrow of mature rats with collagen-induced arthritis. Rheumatology (Oxford) 2004; 43:1496-503. [PMID: 15353610 DOI: 10.1093/rheumatology/keh395] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [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: 11/14/2022] Open
Abstract
OBJECTIVES To investigate gene expression relevant to osteoclastogenesis in the synovium and bone marrow during the development of collagen-induced arthritis (CIA) in mature rats. METHODS Total messenger RNAs (mRNAs) were obtained from CIA synovium and bone marrow after immunization. First, reverse transcriptase-polymerase chain reactions (RT-PCR) were carried out to detect the mRNA encoding receptor activator of NF-kappaB (RANK), RANK ligand (RANKL), osteoprotegerin (OPG), tumour necrosis factor-alpha (TNF-alpha), interleukin (IL)-1beta, IL-6 and the osteoclast markers tartrate-resistant acid phosphatase (TRAP) and cathepsin K. Secondly, the genes detected clearly by RT-PCR were quantified using real-time PCR. RESULTS In the synovium, expression of all genes was confirmed by specific single bands in RT-PCR. In real-time PCR, the expression levels of TNF-alpha, IL-1beta, IL-6, RANKL, TRAP and cathepsin K mRNA increased, whereas the expression levels of RANK and OPG were unchanged and decreased respectively. RANKL expression was highly correlated with the two osteoclast markers. In the bone marrow, RT-PCR did not clearly detect the expression of IL-6, RANKL or OPG mRNA. Quantitative real-time PCR showed that TNF-alpha, RANK and TRAP mRNA expression did not change significantly with time, and that IL-1beta and cathepsin K changed slightly compared with those in the synovium. CONCLUSIONS In the early stages of arthritis, synovial RANKL is closely involved in osteoclastogenesis, and various changes in synovial cytokines, including down-regulation of OPG, probably accelerate osteoclast formation. In contrast, cytokine mRNA in the bone marrow showed little fluctuation. We suggest that synovial cytokines affect osteoclastogenesis not only in the synovium but in the bone marrow.
Collapse
Affiliation(s)
- Y Kishimoto
- Department of Orthopedic Surgery, Faculty of Medicine, Tottori University, Yonago, Tottori 683-8504, Japan.
| | | | | | | | | | | |
Collapse
|
39
|
Takada M, Fukumoto S, Ichihara T, Ku Y, Kuroda Y. Comparison of intestinal transit recovery between laparoscopic and open surgery using a rat model. Surg Endosc 2003; 17:1237-40. [PMID: 12799882 DOI: 10.1007/s00464-002-9213-z] [Citation(s) in RCA: 7] [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] [Received: 09/30/2002] [Accepted: 12/12/2002] [Indexed: 11/30/2022]
Abstract
BACKGROUND After laparoscopic surgery (LS), patients show faster recovery of intestinal transit than after conventional open surgery (OS). To prove the mechanism of this advantage, we compared the recovery of intestinal transit using steel carbon balls. METHODS Rats underwent either open laparotomy or were insufflated with carbon dioxide followed by the administration of steel balls (0.6 mm). An abdominal radiograph was taken 12 h after the operation. Compliance of the intestinal walls was analyzed with a computer-driven barostat device. RESULTS An abdominal radiograph of 12 h after administration of the steel carbon balls showed the balls scattered in the small and large intestine of the LS patients, whereas they remained mostly in the stomach of the OS patients. Compliance of the intestinal walls was sustained at approximately 100 microl/mmHg in the LS patients, whereas it dropped to 94 microl/mmHg in the OS patients with the increase in balloon pressure. Histologically, the extent of serosal edema was more severe in the OS than in the LS patients. In terms of intestinal transit and irritation LS has advantage over OS. CONCLUSIONS Intestinal transit recovery, as measured by the migration of steel carbon balls, is faster in LS, and gastric emptying is slow in OS.
Collapse
Affiliation(s)
- M Takada
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kobe University, 7-5-2, Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan.
| | | | | | | | | |
Collapse
|
40
|
Abstract
Cadherins are cell adhesion molecules that are critical for tissue development. In this report, we identified members of the cadherin family cadherin-related neuronal receptors (CNRs) 1 and 5 expressed in rat incisors by the differential display method. Quantitative RT-PCR revealed that CNR1 mRNA is expressed in the secretory stage but reduced in the early-maturation stage, while CNR5 mRNA is expressed in both these stages. In situ hybridization showed that strong expression of CNR1 is strong in the secretory stage, but reduced in the early phase and diminished in the late phase of the early-maturation stage. CNR5 mRNA is expressed almost at the same levels in the secretory and in the early phase of the early-maturation stages but is absent in the late phase of the early-maturation stage. Both CNR1 and 5 mRNA are continuously expressed in odontoblasts. Immunohistology showed that CNR proteins are expressed in the secretory and early-maturation stages of ameloblasts, but no protein expression at the late-maturation stage was observed. CNR proteins were continuously expressed in odontoblasts. We found that recombinant CNR1 binds dental epithelial and mesenchymal cells through N-terminal domain EC1 in vitro. These results suggest that CNR1 and CNR5 may play an important role in enamel and dentin formation, probably through cell-cell and/or cell-matrix interactions.
Collapse
Affiliation(s)
- E Fukumoto
- Department of Preventive Dentistry, Nagasaki School of Dentistry, Japan.
| | | | | | | | | | | |
Collapse
|
41
|
Fukumoto S, Koyama H, Shoji T, Emoto M, Nishizawa Y. 3P-0874 The mobilization of endothelial progenitor cells in accordance with arterial sclerosis. ATHEROSCLEROSIS SUPP 2003. [DOI: 10.1016/s1567-5688(03)91092-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
42
|
Huang X, Xuan X, Kimbita EN, Battur B, Miyazawa T, Fukumoto S, Mishima M, Makala LH, Suzuki H, Sugimoto C, Nagasawa H, Fujisaki K, Mikami T, Igarashi I. Development and evaluation of an enzyme-linked immunosorbent assay with recombinant SAG2 for diagnosis of Toxoplasma gondii infection in cats. J Parasitol 2002; 88:804-7. [PMID: 12197139 DOI: 10.1645/0022-3395(2002)088[0804:daeoae]2.0.co;2] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [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: 11/10/2022] Open
Abstract
Cats are pivotal in the transmission of Toxoplasma gondii. To develop a sensitive and specific serodiagnostic method for feline toxoplasmosis, surface antigen 2 (SAG2) of T. gondii was expressed in Escherichia coli and its diagnostic potential evaluated in an enzyme-linked immunosorbent assay (ELISA). The ELISA with recombinant SAG2 (rSAG2) was able to differentiate very clearly between sera from cats experimentally infected with T. gondii and sera from normal cats. Serum samples collected from domestic cats in Japan were investigated by the ELISA, and the results were compared with those of a commercially available latex agglutination test (LAT) kit. Of the 192 samples screened, 42 (21.9%) were positive by ELISA. Among the 42 ELISA-positive samples, 39 were positive by LAT. There was a significant correlation between ELISA and LAT titers. All the 150 ELISA-negative samples were negative by LAT. These results indicate that the ELISA with rSAG2 expressed in E. coli should be a useful method for detection of T. gondii infection in cats.
Collapse
Affiliation(s)
- X Huang
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
43
|
Huang X, Xuan X, Kimbita EN, Battur B, Miyazawa T, Fukumoto S, Mishima M, Makala LH, Suzuki H, Sugimoto C, Nagasawa H, Fujisaki K, Mikami T, Igarashi I. Development and Evaluation of an Enzyme-Linked Immunosorbent Assay with Recombinant SAG2 for Diagnosis of Toxoplasma gondii Infection in Cats. J Parasitol 2002. [DOI: 10.2307/3285368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
44
|
Kamimura T, Fukumoto S, Ono R, Yap YK, Yoshimura M, Mori Y, Sasaki T, Yoshida K. Enhancement of CsLiB(6)O(10) surface-damage resistance by improved crystallinity and ion-beam etching. Opt Lett 2002; 27:616-618. [PMID: 18007880 DOI: 10.1364/ol.27.000616] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The surface laser-induced damage threshold (LIDT) of CsLiB(6)O(10) (CLBO) crystal was enhanced twofold with improved crystallinity and ion-beam etching. For crystals with high crystal quality (bulk LIDT, 15.0-19.0 GW/cm(2)), the surface LIDT was 1.4-fold higher than for those with conventional crystal quality (bulk LIDT, 9.0-12.0 GW/cm(2)). In addition, removal of residual surface-polishing compounds by means of ion-beam etching can further enhance the surface LIDT by another 1.5-fold. Thus, CLBO crystals with high crystal quality and ion-beam etching are now more reliable for high-power UV light generation.
Collapse
|
45
|
Iwamoto T, Fukumoto S, Kanaoka K, Sakai E, Shibata M, Fukumoto E, Inokuchi Ji J, Takamiya K, Furukawa K, Furukawa K, Kato Y, Mizuno A. Lactosylceramide is essential for the osteoclastogenesis mediated by macrophage-colony-stimulating factor and receptor activator of nuclear factor-kappa B ligand. J Biol Chem 2001; 276:46031-8. [PMID: 11592959 DOI: 10.1074/jbc.m104464200] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.8] [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: 11/06/2022] Open
Abstract
Glycosphingolipids and their metabolites play important roles in a variety of biological processes. Several signal molecules are localized in a glycolipid-enriched microdomain on the cell surface, and their signals are regulated by the glycolipid composition. However, the function of glycolipids in osteoclastogenesis has not been clearly understood. We found that D-threo-1-phenyl-2-decanoylamino-3-morpholino-1-propanol (D-PDMP), a glucosylceramide synthase inhibitor, completely inhibits the osteoclast formation induced by macrophage-colony-stimulating factor and receptor activator of nuclear factor-kappa B ligand (RANKL) in a dose-dependent manner. Expression of RANK, the receptor of RANKL, induced by macrophage colony-stimulating factor, was reduced markedly in D-PDMP-treated cells. d-PDMP also inhibited the phosphorylation of the inhibitor of nuclear factor-kappa B and extracellular signal-regulated kinase 1/2 induced by RANKL. In several experiments with the addition of glycolipids to D-PDMP-treated purified bone marrow cells, lactosylceramide (LacCer) strongly affected the differentiation into tartrate-resistant acid phosphatase mononucleated cells, but not positive multinucleated cells. GM3 and GM1 also recovered, but less effectively compared with LacCer. Moreover, exogenous LacCer recovered the reduced expression of RANK and the phosphorylation of inhibitor of NF-kappa B and extracellular signal-regulated kinase 1/2 after stimulation by RANKL at the same level of cells without D-PDMP treatment. Our data suggest that glycosphingolipids, especially LacCer, are necessary for the initiation step of RANKL-induced osteoclastogenesis.
Collapse
Affiliation(s)
- T Iwamoto
- First Department of Oral and Maxillofacial Surgery, Nagasaki University School of Dentistry, Nagasaki 852-8588, Japan
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Kimbita EN, Xuan X, Huang X, Miyazawa T, Fukumoto S, Mishima M, Suzuki H, Sugimoto C, Nagasawa H, Fujisaki K, Suzuki N, Mikami T, Igarashi I. Serodiagnosis of Toxoplasma gondii infection in cats by enzyme-linked immunosorbent assay using recombinant SAG1. Vet Parasitol 2001; 102:35-44. [PMID: 11705650 DOI: 10.1016/s0304-4017(01)00522-2] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.5] [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: 11/26/2022]
Abstract
The gene encoding surface antigen 1 (SAG1, P30) of Toxoplasma gondii (T. gondii) was cloned into the plasmid pGEX-4T-3 and subsequently expressed in Escherichia coli (E. coli) as a glutathione-S-transferase (GST) fusion protein. The recombinant SAG1 (rSAG1) was refolded using 8M urea solution followed by dialysis and thereafter evaluated in an enzyme-linked immunosorbent assay (ELISA) for serological diagnosis of toxoplasmosis. The test sera were adsorbed with GST to block non-specific reactivity to the GST-SAG1 fusion protein. The ELISA with rSAG1 was able to differentiate very clearly between sera from cats or mice experimentally infected with T. gondii and sera from normal cats or mice. The ELISA detected no cross-reactivity with sera from mice experimentally infected with the closely related parasite Neospora caninum (N. caninum). Some 193 cat sera were tested for antibodies to T. gondii, out of which 40 (20.7%) reacted positively by ELISA with the rSAG1 while another 79.3% cats reacted negative to the assay. Both positive and negative sera were confirmed by Western blot analysis. The results of ELISA were in agreement with those of a commercially available latex agglutination test (LAT) kit, although the former had higher titers than the latter.
Collapse
MESH Headings
- Animals
- Antibodies, Protozoan/blood
- Antigens, Protozoan/genetics
- Antigens, Protozoan/immunology
- Antigens, Surface/genetics
- Antigens, Surface/immunology
- Blotting, Western/methods
- Blotting, Western/veterinary
- Cat Diseases/blood
- Cat Diseases/diagnosis
- Cat Diseases/immunology
- Cats
- Cross Reactions
- Enzyme-Linked Immunosorbent Assay/methods
- Enzyme-Linked Immunosorbent Assay/veterinary
- Female
- Latex Fixation Tests/methods
- Latex Fixation Tests/veterinary
- Mice
- Mice, Inbred ICR
- Protozoan Proteins/genetics
- Protozoan Proteins/immunology
- Recombinant Fusion Proteins/immunology
- Reproducibility of Results
- Sensitivity and Specificity
- Toxoplasma/genetics
- Toxoplasma/immunology
- Toxoplasmosis, Animal/diagnosis
- Toxoplasmosis, Animal/immunology
Collapse
Affiliation(s)
- E N Kimbita
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
47
|
Fukumoto S, Chikatsu N, Okazaki R, Takeuchi Y, Tamura Y, Murakami T, Obara T, Fujita T. Inactivating mutations of calcium-sensing receptor results in parathyroid lipohyperplasia. Diagn Mol Pathol 2001; 10:242-7. [PMID: 11763315 DOI: 10.1097/00019606-200112000-00006] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Familial hypocalciuric hypercalcemia (FHH) is an autosomal dominant disease characterized by mild hypercalcemia, an inappropriately high parathyroid hormone level, and absence of hypercalciuria. Heterozygous inactivating mutations of calcium-sensing receptor (CaSR) are found in about two thirds of patients with FHH. Histologic examination of parathyroid glands in FHH is reported to show normal histology or chief cell hyperplasia. Thus, histologic features of the parathyroid glands in FHH vary, and there is no clear histologic criterion that indicates FHH. The authors have encountered three hypercalcemic patients with characteristic histologic features of enlarged parathyroid glands. Clusters of parenchymal cells were mixed with fat cells, and the area of fat cells was 33% to 49% of the total area. These features are similar to those described as parathyroid lipohyperplasia. Postoperative evaluation showed that fractional excretion of calcium was low in these patients. Direct sequencing of the polymerase chain reaction product showed that the first patient was heterozygous for an already reported inactivating mutation of CaSR (P55L). The second patient was also heterozygous for a novel inactivating mutation (R220W). The third was homozygous for an inactivating mutation (Q27R). These results indicate that histologic features of parathyroid lipohyperplasia suggest the presence of inactivating mutations of CaSR.
Collapse
Affiliation(s)
- S Fukumoto
- Department of Laboratory Medicine University of Tokyo Branch Hospital, Japan.
| | | | | | | | | | | | | | | |
Collapse
|
48
|
Affiliation(s)
- S Fukumoto
- Department of Laboratory Medicine, University of Tokyo, Japan
| | | |
Collapse
|
49
|
Fukumoto S. [Idiopathic hypoparathyroidism]. Nihon Rinsho 2001; 59 Suppl 8:101-7. [PMID: 11808213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Affiliation(s)
- S Fukumoto
- Department of Laboratory Medicine, University of Tokyo Hospital
| |
Collapse
|
50
|
Fukumoto S. [Activating mutations of calcium-sensing receptor cause insufficient secretion of parathyroid hormone]. Clin Calcium 2001; 11:1633-1636. [PMID: 15775479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Calcium-sensing receptor (CaSR) was cloned as an essential receptor for regulating secretion of parathyroid hormone (PTH) by extracellular Ca. Sensing of Ca by CaSR activates several intracellular signal transduction systems and suppresses secretion of PTH. Autosomal dominant hypocalcemia (ADH) with insufficient secretion of PTH was shown to be caused by activating mutations of CaSR. Clinical spectrum of ADH is broad from asymptomatic patients to severe hypocalcemia with tetany soon after birth. Some patients formerly believed to have idiopathic hypoparathyroidism may actually have activating mutations of CaSR.
Collapse
Affiliation(s)
- S Fukumoto
- Department of Laboratory Medicine, University of Tokyo
| |
Collapse
|