1
|
Tanaka H, Mizuma K, Nakamura Y, Hirata A, Miyazaki J, Suzuki K, Seta H, Watanabe H, Suzuki T, Watanabe R, Murayama N, Okamura T, Nakamura S. Predicting habitual water intake from lifestyle questions. Eur Rev Med Pharmacol Sci 2023; 27:8829-8841. [PMID: 37782192 DOI: 10.26355/eurrev_202309_33803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 10/03/2023]
Abstract
OBJECTIVE Previous studies have used selective recall and descriptive dietary record methods, requiring considerable effort for assessing food and water intake. This study created a simplified lifestyle questionnaire to predict habitual water intake (SQW), accurately and quickly assessing the habitual water intake. We also evaluated the validity using descriptive dietary records as a cross-sectional study. SUBJECTS AND METHODS First, we used crowdsourcing and machine learning to collect data, predict water intake records, and create questionnaires. We collected 305 lifestyle-related questions as predictor variables and selective recall methods for assessing water intake as an outcome variable. Random forests were used for the machine learning models because of their interpretability and accurate estimation. Random forest and single regression correlation analysis were augmented by the synthetic minority oversampling that trained the model. We separated the data by sex and evaluated our model using unseen hold-out testing data, predicting the individual and overall habitual water intake from various sources, including non-alcoholic beverages, alcohol, and food. RESULTS We found a 0.60 Spearman's correlation coefficient for total water intake between the predicted and the selective recall method values, reflecting the target value to be achieved. This question set was then used for feasibility tests. The descriptive dietary record method helped to obtain a ground-truth value. We categorized the data by gender, season, and source: non-alcoholic beverages, alcohol, food, and total water intake, and the correlation was confirmed. Consequently, our results showed a Pearson's correlation coefficient of 0.50 for total water intake between the predicted and the selective recall method values. CONCLUSIONS We hypothesize that dissemination of SQW can lead to better health management by easily determining the habitual water intake.
Collapse
Affiliation(s)
- H Tanaka
- Division of Information Science, Nara Institute of Science and Technology, Ikoma, Nara, Japan.
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
2
|
Kurobe M, Takaoka E, Suzuki T, Mizoguchi S, Saito T, Cao N, Alexandre C, Gotoh D, Igarashi T, Inamura S, Ando T, Inai H, Uchida K, Miyazaki J, Yoshimura N. Differential effects on urethral function, epithelial morphology, and molecular profile in two different rat models of stress urinary incontinence by simulated birth trauma or estrogen deficiency. J Sex Med 2022. [DOI: 10.1016/j.jsxm.2022.03.562] [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: 10/18/2022]
|
3
|
Kawakami Y, Inoue K, Hayashi H, Wang WJ, Setoyama H, Gu YJ, Imamura M, Iwata H, Ikada Y, Nozawa M, Miyazaki J. Subcutaneous Xenotransplantation of Hybrid Artificial Pancreas Encapsulating Pancreatic B Cell Line (MIN6): Functional and Histological Study. Cell Transplant 2017; 6:541-5. [PMID: 9331510 DOI: 10.1177/096368979700600519] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The biohybrid artificial pancreas is designed to enclose pancreatic endocrine tissues with a selectively permeable membrane that immunoisolates the graft from the host immune system, allowing those endocrine tissues to survive and control glucose metabolism for an extended period of time. The pancreatic B cell line MIN6 is established from a pancreas B cell tumor occurring in transgenic mice harboring the human insulin promoter gene connected to the SV40 T-antigen hybrid gene. It has been proven that glucose-stimulated insulin secretion in MIN6 cells retains a concentration-dependent response similar to that of normal islets. In this study, we performed the histological and functional examination of three-layer microbeads employing MIN6 cells after subcutaneous xenotransplantation to evaluate this device as bioartificial pancreas. MIN6 cells were microencapsulated in three-layer microbeads formulated with agarose, polystyrene sulfonic acid, polybrene, and carboxymethyl cellulose. Microbeads were xenogenically implanted in the subcutaneous tissue of the back of Lewis rats with streptozotocin-induced diabetes. One week after implantation, microbeads were retrieved and cultured for 24 h before the static incubation. There was no evidence of adhesion to the graft and the fibrosis in the transplantation site as determined by gross visual inspection. Microscopic examination demonstrated that retrieved microbeads maintained normal shape, containing intact MIN6 cells. Histological study showed that these MIN6 cells in the microbeads appeared to be viable without cellular infiltration within or around the microbeads. Immunohistochemical analysis of the microbeads clearly revealed the intense staining of insulin in the cytoplasm of encapsulated MIN6 cells. Insulin productivity of MIN6 cells in the microbeads is strongly suggested to be preserved. In response to 16.7 mM glucose stimulation, static incubation of microbeads 1 wk after implantation caused the 2.3 times increase in insulin secretion seen after 3.3 mM glucose stimulation (84.3 ± 10.0 vs. 37.4 ± 10.7 μU/3 × 106 cells/hr, n = 5 each, p < 0.01). This study demonstrates that three-layer microbeads encapsulating MIN6 cells retain excellent biocompatibility and maintain good insulin secretion even after subcutaneous xenotransplantation, suggesting the possible future clinical application of this unique bioartificial pancreas to subcutaneous xenotransplantation.
Collapse
Affiliation(s)
- Y Kawakami
- First Department of Surgery, Faculty of Medicine, Kyoto University, Japan
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
4
|
Ohgawara H, Miyazaki J, Karibe S, Tashiro F, Akaike T, Hashimoto Y. Embedded-Culture of Pancreatic β-Cells Derived from Transgenic Mouse Insulinoma as a Potential Source for Xenotransplantation using a Diffusion Chamber. Cell Transplant 2017; 4:307-13. [PMID: 7640870 DOI: 10.1177/096368979500400309] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Embedded-culture of pancreatic β-cells derived from a transgenic mouse insulinoma (MIN6 cells) was studied in vitro and in vivo. The MIN6 cells were enmeshed in an agarose-PVMA-collagen matrix for long-term maintenance. The cells formed islet-like cell clusters (ICCs) in the mixed matrix. When 10 mmol/L nicotinamide was added to these cultures the cells secreted insulin in response to various concentrations of glucose, whereas the untreated control cells were unresponsive. Both control and nicotinamide-treated MIN6 cells exhibited normal β-cell function for up to 35 days in the mixed matrix, and the cells were much better preserved with nicotinamide than without it. MIN6 cells were suspended in the mixed matrix with nicotinamide and transferred into diffusion chambers to create a bio-artificial endocrine pancreas (Bio-AEP). In streptozotocine-induced diabetic rats with implanted Bio-AEP but without any immunosuppressants, a return to normoglycaemia was observed for up to 12 wk or more after transplantation. Our results indicate that nicotinamide-treated MIN6 cells embedded in a mixed matrix should be useful for the study of xenotransplantation and the development of a bioartificial endocrine pancreas.
Collapse
Affiliation(s)
- H Ohgawara
- Medical Research Institute, Tokyo Women's Medical College, Japan
| | | | | | | | | | | |
Collapse
|
5
|
Nogami S, Miyazaki J, Nagasaka T, Hasegawa A, Muroga T. Study on Dissimilar-Material Welding with Vanadium and Austenitic Stainless Steel. Fusion Science and Technology 2017. [DOI: 10.13182/fst11-a12392] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- S. Nogami
- Tohoku University, Sendai 980-8579, Japan
| | | | - T. Nagasaka
- National Institute for Fusion Science, Oroshi, Toki, Gifu 509-5292, Japan
| | | | - T. Muroga
- National Institute for Fusion Science, Oroshi, Toki, Gifu 509-5292, Japan
| |
Collapse
|
6
|
Suetomi T, Kurobe M, Ikeda A, Ishizuka R, Kimura T, Waku N, Kojima T, Joraku A, Miyazaki J, Kawai K, Nishiyama H. 115 Need for Repeat Measurement of Free Testosterone in the Diagnosis of Testosterone Deficiency. J Sex Med 2017. [DOI: 10.1016/j.jsxm.2016.11.068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
7
|
Suetomi T, Kurobe M, Ichioka D, Kawahara T, Takaoka E, Waku N, Kojima T, Johraku A, Miyazaki J, Kawai K, Nishiyama H, Ueno S, Gosho M. 233 Is it Possible to Predict the Presence of Low Free Testosterone Levels Without Free Testosterone Measurement? J Sex Med 2017. [DOI: 10.1016/j.jsxm.2016.11.148] [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: 10/20/2022]
|
8
|
Kanuma R, Ishikawa H, Takaoka E, Ohnishi K, Numajiri H, Takizawa D, Miyazaki J, Nishiyama H, Okumura T, Sakurai H. Bladder Preservation Therapy Using Proton Boost Concurrently Combined With Intra-arterial Chemotherapy for Invasive Bladder Cancer. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1081] [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: 11/28/2022]
|
9
|
Miyazaki J, Kawasumi K, Kobayashi T. Frequency domain approach for time-resolved pump-probe microscopy using intensity modulated laser diodes. Rev Sci Instrum 2014; 85:093703. [PMID: 25273732 DOI: 10.1063/1.4895832] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We present a scheme for time-resolved pump-probe microscopy using intensity modulated laser diodes. The modulation frequencies of the pump and probe beams are varied up to 500 MHz with fixed frequency detuning typically set at 15 kHz. The frequency response of the pump-probe signal is detected using a lock-in amplifier referenced at the beat frequency. This frequency domain method is capable of characterizing the nanosecond to picosecond relaxation dynamics of sample species without the use of a high speed detector or a high frequency lock-in amplifier. Furthermore, as the pump-probe signal is based on the nonlinear interaction between the two laser beams and the sample, our scheme provides better spatial resolution than the conventional diffraction-limited optical microscopes. Time-resolved pump-probe imaging of fluorescence beads and aggregates of quantum dots demonstrates that this method is useful for the microscopic analysis of optoelectronic devices. The system is implemented using compact and low-cost laser diodes, and thus has a broad range of applications in the fields of photochemistry, optical physics, and biological imaging.
Collapse
Affiliation(s)
- J Miyazaki
- Advanced Ultrafast Laser Research Center, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan
| | - K Kawasumi
- Advanced Ultrafast Laser Research Center, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan
| | - T Kobayashi
- Advanced Ultrafast Laser Research Center, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan
| |
Collapse
|
10
|
Takaoka EI, Miyazaki J, Kimura T, Kojima T, Kawai K, Murata Y, Itoguchi N, Minami Y, Nakamura T, Honda K, Nishiyama H. Concurrent Urothelial Carcinoma in the Renal Pelvis of an Allograft Kidney and Native Recipient Bladder: Evidence of Donor Origin. Jpn J Clin Oncol 2014; 44:366-9. [DOI: 10.1093/jjco/hyu015] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
|
11
|
Kubo MK, Kobayashi Y, Yamada Y, Mihara M, Nagatomo T, Sato W, Miyazaki J, Sato S, Kitagawa A. In-beam Mössbauer spectroscopy of (57)Fe/(57)Mn in MgO and NaF at Heavy-Ion Medical Accelerator in Chiba. Rev Sci Instrum 2014; 85:02C310. [PMID: 24593647 DOI: 10.1063/1.4833916] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Development of efficient ion supply of (58)Fe from (58)Fe(C5H5)2, and quick switching between therapy and material science at the Heavy-Ion Medical Accelerator in Chiba realized a new (57)Mn in-beam emission Mössbauer spectroscopy measurement system. Application to simple binary chemical compounds, MgO and NaF, proved the usefulness of the system to probe chemical and physical behaviors of trace impurities in solids. Annealing of lattice defects produced by the implantation and β-decay of (57)Mn and/or γ-ray emission recoil was observed by a local probe.
Collapse
Affiliation(s)
- M K Kubo
- College of Liberal Arts, International Christian University, Mitaka, Tokyo 181-8585, Japan
| | - Y Kobayashi
- Department of Engineering Science, The University of Electro-Communications, Chofu, Tokyo 182-8585, Japan and Nishina Center for Accelerator Based Science, RIKEN, Wako, Saitama 351-0198, Japan
| | - Y Yamada
- Department of Chemistry, Tokyo University of Science, Shinjuku, Tokyo 162-8602, Japan
| | - M Mihara
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - T Nagatomo
- High Energy Accelerator Research Organization, Tokai-mura, Ibaraki 319-1195, Japan
| | - W Sato
- Institute of Science and Engineering, Kanazawa University, Kanazawa, Ishikawa 920-1192, Japan
| | - J Miyazaki
- College of Industrial Technology, Nihon University, Funabashi, Chiba 275-8576, Japan
| | - S Sato
- National Institute of Radiological Sciences, Anagawa, Chiba 263-8555, Japan
| | - A Kitagawa
- National Institute of Radiological Sciences, Anagawa, Chiba 263-8555, Japan
| |
Collapse
|
12
|
Sekiguchi K, Okamura H, Wada Y, Miyazaki J, Taguchi T, Gebauer U, Dozono M, Kawase S, Kubota Y, Lee CS, Maeda Y, Mashiko T, Miki K, Sakaguchi S, Sakai H, Sakamoto N, Sasano M, Shimizu Y, Takahashi K, Tang R, Uesaka T, Wakasa T, Yako K. Complete Set of Deuteron Analyzing Powers for dpElastic Scattering at Intermediate Energies and Three Nucleon Forces. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20146603076] [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
|
13
|
Ota S, Miyamura H, Nishizawa H, Inagaki H, Inagaki A, Inuzuka H, Suzuki M, Miyazaki J, Sekiya T, Udagawa Y, Kurahashi H. Contribution of fetal ANXA5 gene promoter polymorphisms to the onset of pre-eclampsia. Placenta 2013; 34:1202-10. [PMID: 24140079 DOI: 10.1016/j.placenta.2013.09.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Revised: 09/14/2013] [Accepted: 09/16/2013] [Indexed: 12/30/2022]
Abstract
OBJECTIVE A common haplotype M2 consisting of minor SNP alleles located in the ANXA5 gene promoter region has been described as a risk factor for various obstetric complications such as recurrent pregnancy loss, pre-eclampsia and pregnancy-related thrombophilic disorder. However, the question of whether it is the maternal or fetal genotype that contributes to the onset of these disorders remains to be resolved. METHODS We analyzed ANXA5 gene variants in the blood and placental tissues from pre-eclampsia patients and normotensive controls. ANXA5 expression was examined by qRT-PCR, Western blotting and immunostaining. Results were compared between M2 and non-M2 carriers. RESULTS The M2 haplotype was found to be significantly frequent in placentas from pre-eclamptic patients relative to the controls (25.5% versus 10%, P = 0.044), In contrast, no significant differences were observed in maternal blood (13.0% versus 11.3%, P = 0.597). The placental expression of ANXA5 mRNA was found to be lower in M2 carriers. When examined by Western blot and immunostaining, the ANXA5 protein levels were found to be affected more by the placental than the maternal genotype. Histological examination of the placentas from the pre-eclamptic patients demonstrated that a placental M2 haplotype correlated more closely than maternal M2 with the severity of perivillous fibrin deposition. CONCLUSIONS Although preliminary, these results suggest that hypomorphic M2 alleles in the in placental ANXA5 promoter, whether transmitted maternally or paternally, might be an essential determinant of an increased risk of pre-eclampsia via local thrombophilia at the feto-maternal interface.
Collapse
Affiliation(s)
- S Ota
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Aichi 470-1192, Japan
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
14
|
Inai H, Kawai K, Kojima T, Joraku A, Shimazui T, Yamauchi A, Miyagawa T, Endo T, Fukuhara Y, Miyazaki J, Uchida K, Nishiyama H. Oncological Outcomes of Metastatic Testicular Cancers under Centralized Management through Regional Medical Network. Jpn J Clin Oncol 2013; 43:1249-54. [DOI: 10.1093/jjco/hyt152] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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
|
Togo Y, Yasuda M, Miyazaki J, Takahashi S, Hayami H, Tanaka K, Ishikawa K, Hamasuna R, Yamamoto S, Kiyota H, Arakawa S, Matsumoto T. P229 Incidence of infection following a prostate biopsy in Japan – a multi-center retrospective study. Int J Antimicrob Agents 2013. [DOI: 10.1016/s0924-8579(13)70470-9] [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: 10/26/2022]
|
16
|
Takayama K, Koyama T, Mori S, Kato K, Takata M, Fujioka J, Tokura Y, Miyazaki J, Katsufuji T. Electronic phase transition and an anomalous ordered phase in Ba2Ti13O22 with 3d1 ions on a triangle-based lattice. Phys Rev Lett 2013; 110:196405. [PMID: 23705727 DOI: 10.1103/physrevlett.110.196405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2013] [Indexed: 06/02/2023]
Abstract
We found that Ba(2)Ti(13)O(22) with Ti(3+) (3d(1)) ions on a triangle-based lattice exhibits a phase transition at T(c)~200 K, below which the increase of electrical resistivity and decrease of magnetic susceptibility were observed. Transmission electron microscopy and optical reflectivity measurements indicate that the low-temperature phase of the present compound shares characteristics in common with a charge-density-wave state with remnant carriers, although a commensurate wave vector of the modulation and a linear temperature dependence of the magnetic susceptibility below T(c) suggest an exotic ordered state.
Collapse
Affiliation(s)
- K Takayama
- Department of Physics, Waseda University, Tokyo 169-8555, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Yamada Y, Kobayashi Y, Kubo M, Mihara M, Nagatomo T, Sato W, Miyazaki J, Sato S, Kitagawa A. In-beam Mössbauer spectra of 57Mn implanted into low-temperature solid Ar. Chem Phys Lett 2013. [DOI: 10.1016/j.cplett.2013.03.033] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
18
|
Yonemura Y, Nojima N, Kaji M, Kawamura T, Fushida S, Fujimura T, Itoh H, Fujita H, Miyazaki J, Endou Y, Sasaki T, Yamamoto H. E-cadherin and c-met expression as a prognostic factor in gastric cancer. Oncol Rep 2012; 4:743-8. [PMID: 21590132 DOI: 10.3892/or.4.4.743] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
E-cadherin has an important role in the cell-cell adhesion and is known as an invasion suppressor gene. The c-met, which is a receptor of hepatocyte growth factor receptor, is involved in the proliferative and motile activity in cancer cells. The invasive and metastatic capacities of gastric cancer were studied from the immunohistochemically examined expression of MET and E-cadherin. Among 127 primary gastric cancers, 47 (34%) tumors were found to have preserved E-cadherin expression and the other 84 tumors showed reduced E-cadherin expression. MET expression was found in 55 (43%) tumors. A strong correlation was found between reduced E-cadherin expression and a larger tumor, positive serosal invasion, lymph node metastases or poor prognosis. Tumors with MET expression have the tendencies to invade deeply, to metastasize in more remote lymph nodes or peritoneum and to run a poor prognosis. MET over-expression and reduced E-cadherin expression were strongly associated with lymph node metastasis, peritoneal dissemination and poor prognosis. This group of patients with simultaneously abnormal expressions of these genes had a sixfold relative risk of death, as compared with patients with tumors showing MET negative or preserved E-cadherin expression. These results indicate that immunohistochemical combined analyses of MET and E-cadherin expression may be a powerful tool for the evaluation of invasive capacity and the prognosis of gastric cancer patients.
Collapse
Affiliation(s)
- Y Yonemura
- KANAZAWA UNIV,CANC RES INST,DEPT EXPT THERAPEUT,KANAZAWA,ISHIKAWA 920,JAPAN. KANAZAWA UNIV,SCH MED,DEPT BIOCHEM 2,KANAZAWA,ISHIKAWA 920,JAPAN
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
19
|
Ikeda A, Kawai K, Ando S, Oikawa T, Inai H, Kimura T, Takaoka EI, Yoshino T, Suetomi T, Kojima T, Miyazaki J, Nishiyama H. Management of Ureteral Obstruction in Advanced Testicular Tumor with Lymph Node Metastasis. Jpn J Clin Oncol 2012; 42:748-52. [DOI: 10.1093/jjco/hys094] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
20
|
Horie J, Murata S, Hayashi S, Murata J, Miyazaki J, Mizota K, Horikawa E. Factors That Delay COPD Detection in the General Elderly Population. Respir Care 2011; 56:1143-50. [DOI: 10.4187/respcare.01109] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
21
|
Rivandi J, Miyazaki J, Hrmova M, Pallotta M, Tester M, Collins NC. A SOS3 homologue maps to HvNax4, a barley locus controlling an environmentally sensitive Na+ exclusion trait. J Exp Bot 2011; 62:1201-16. [PMID: 21047983 PMCID: PMC3022402 DOI: 10.1093/jxb/erq346] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2010] [Revised: 10/08/2010] [Accepted: 10/12/2010] [Indexed: 05/02/2023]
Abstract
Genes that enable crops to limit Na(+) accumulation in shoot tissues represent potential sources of salinity tolerance for breeding. In barley, the HvNax4 locus lowered shoot Na(+) content by between 12% and 59% (g(-1) DW), or not at all, depending on the growth conditions in hydroponics and a range of soil types, indicating a strong influence of environment on expression. HvNax4 was fine-mapped on the long arm of barley chromosome 1H. Corresponding intervals of ∼200 kb, containing a total of 34 predicted genes, were defined in the sequenced rice and Brachypodium genomes. HvCBL4, a close barley homologue of the SOS3 salinity tolerance gene of Arabidopsis, co-segregated with HvNax4. No difference in HvCBL4 mRNA expression was detected between the mapping parents. However, genomic and cDNA sequences of the HvCBL4 alleles were obtained, revealing a single Ala111Thr amino acid substitution difference in the encoded proteins. The known crystal structure of SOS3 was used as a template to obtain molecular models of the barley proteins, resulting in structures very similar to that of SOS3. The position in SOS3 corresponding to the barley substitution does not participate directly in Ca(2+) binding, post-translational modifications or interaction with the SOS2 signalling partner. However, Thr111 but not Ala111 forms a predicted hydrogen bond with a neighbouring α-helix, which has potential implications for the overall structure and function of the barley protein. HvCBL4 therefore represents a candidate for HvNax4 that warrants further investigation.
Collapse
Affiliation(s)
| | | | | | | | | | - N. C. Collins
- Australian Centre for Plant Functional Genomics, University of Adelaide, School of Agriculture Food and Wine, Hartley Grove, Urrbrae, PMB 1 Glen Osmond, SA 5064, Australia
| |
Collapse
|
22
|
Shirakawa T, Haraguchi T, Matsumoto M, Morishita S, Minayoshi K, Miyazaki J, Yamada Y, Tanaka K, Takenaka A, Fujisawa M. UP-2.76: A comparative study on the clinical effects of silodosin and naftopidil in patients with lower urinary tract symptoms associated with benign prostatic hyperplasia. Urology 2010. [DOI: 10.1016/j.urology.2010.07.310] [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: 10/19/2022]
|
23
|
Fukami T, Miyazaki J, Tomimura T, Chen RH. Crystal structures and isotope effect on Na5H3(SeO4)4·2H2O and Na5D3(SeO4)4·2D2O crystals. Cryst Res Technol 2010. [DOI: 10.1002/crat.201000116] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
24
|
Miyazaki J, Matsudaira K, Shimizu Y, Itoh M, Nagamine Y, Mori S, Kim JE, Kato K, Takata M, Katsufuji T. Formation of a three-dimensional network of V trimers in A2V13O22 (A=Ba, Sr). Phys Rev Lett 2010; 104:207201. [PMID: 20867054 DOI: 10.1103/physrevlett.104.207201] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2010] [Indexed: 05/29/2023]
Abstract
We found that in A2V13O22 (A=Ba, Sr), which contains a trilayer slab of VO in the sodium-chloride structure with periodically missing ions, the trimerization of V ions occurs at 290 K (A=Ba) and 380 K (A=Sr). V trimers form a three-dimensional network, but some V ions remain untrimerized in these compounds. The suppression of magnetic susceptibility with trimerization and the existence of a Curie tail at low temperatures, together with the result of NMR measurement, indicate that the V trimers are spin singlet, whereas the untrimerized V ions have a magnetic moment; i.e., there is a spontaneous separation between nonmagnetic and magnetic ions in the crystal.
Collapse
Affiliation(s)
- J Miyazaki
- Department of Physics, Waseda University, Tokyo 169-8555, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
25
|
Shi BJ, Gustafson JP, Button J, Miyazaki J, Pallotta M, Gustafson N, Zhou H, Langridge P, Collins NC. Physical analysis of the complex rye (Secale cereale L.) Alt4 aluminium (aluminum) tolerance locus using a whole-genome BAC library of rye cv. Blanco. Theor Appl Genet 2009; 119:695-704. [PMID: 19529908 DOI: 10.1007/s00122-009-1080-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2009] [Accepted: 05/21/2009] [Indexed: 05/27/2023]
Abstract
Rye is a diploid crop species with many outstanding qualities, and is important as a source of new traits for wheat and triticale improvement. Rye is highly tolerant of aluminum (Al) toxicity, and possesses a complex structure at the Alt4 Al tolerance locus not found at the corresponding locus in wheat. Here we describe a BAC library of rye cv. Blanco, representing a valuable resource for rye molecular genetic studies, and assess the library's suitability for investigating Al tolerance genes. The library provides 6 x genome coverage of the 8.1 Gb rye genome, has an average insert size of 131 kb, and contains only ~2% of empty or organelle-derived clones. Genetic analysis attributed the Al tolerance of Blanco to the Alt4 locus on the short arm of chromosome 7R, and revealed the presence of multiple allelic variants (haplotypes) of the Alt4 locus in the BAC library. BAC clones containing ALMT1 gene clusters from several Alt4 haplotypes were identified, and will provide useful starting points for exploring the basis for the structural variability and functional specialization of ALMT1 genes at this locus.
Collapse
Affiliation(s)
- B-J Shi
- Australian Centre for Plant Functional Genomics (ACPFG), School of Agriculture, Food and Wine, University of Adelaide, PMB1, Glen Osmond, SA, 5064, Australia
| | | | | | | | | | | | | | | | | |
Collapse
|
26
|
Takayama I, Miyazaki S, Tashiro F, Fujikura J, Miyazaki J, Yamato E. Pdx-1-independent differentiation of mouse embryonic stem cells into insulin-expressing cells. Diabetes Res Clin Pract 2008; 79:e8-10. [PMID: 17900743 DOI: 10.1016/j.diabres.2007.08.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2007] [Accepted: 08/21/2007] [Indexed: 10/22/2022]
Abstract
To investigate whether insulin-producing cells obtained from ES cells via the nestin-positive cell-mediated method are of the pancreatic lineage, we established a pdx-1 knockout ES cell line and analyzed its differentiation into insulin-producing cells. As a result, pdx-1 knockout ES cell expressed insulin 2 gene at the final differentiated cells. Thus, our study demonstrated that pdx-1 is not essential for insulin gene expression, at least in cells differentiated from this population of nestin-expression enriched ES cells, and suggested that the insulin-producing cells derived from ES cells may be different from the pancreatic beta cells in terms of their lineage.
Collapse
Affiliation(s)
- I Takayama
- Division of Stem Cell Regulation Research, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | | | | | | | | | | |
Collapse
|
27
|
Yokoyama D, Namiki K, Fukasawa H, Miyazaki J, Nomura K, Yamada Y. Mössbauer study of films produced by laser deposition of iron oxides. J Radioanal Nucl Chem 2007. [DOI: 10.1007/s10967-007-0637-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
28
|
Miyazaki J, Kinoshita S. Method for determining a coupling function in coupled oscillators with application to Belousov-Zhabotinsky oscillators. Phys Rev E Stat Nonlin Soft Matter Phys 2006; 74:056209. [PMID: 17279986 DOI: 10.1103/physreve.74.056209] [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] [Subscribe] [Scholar Register] [Received: 07/03/2006] [Indexed: 05/13/2023]
Abstract
A coupling function that describes the interaction between self-sustained oscillators in a phase equation is derived and applied experimentally to Belousov-Zhabotinsky (BZ) oscillators. It is demonstrated that the synchronous behavior of coupled BZ reactors is explained extremely well in terms of the coupling function thus obtained. This method does not require comprehensive knowledge of either the oscillation mechanism or the interaction among the oscillators, both of these being often difficult to elucidate in an actual system. These facts enable us to accurately analyze the weakly coupled entrainment phenomenon through the direct measurement of the coupling function.
Collapse
Affiliation(s)
- J Miyazaki
- Graduate School of Frontier Biosciences, Osaka University, Suita 565-0871, Japan.
| | | |
Collapse
|
29
|
Nakagome K, Dohi M, Okunishi K, Tanaka R, Miyazaki J, Yamamoto K. In vivo IL-10 gene delivery attenuates bleomycin induced pulmonary fibrosis by inhibiting the production and activation of TGF-beta in the lung. Thorax 2006; 61:886-94. [PMID: 16809410 PMCID: PMC2104751 DOI: 10.1136/thx.2005.056317] [Citation(s) in RCA: 113] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
BACKGROUND Idiopathic pulmonary fibrosis is a devastating disorder for which there is no effective treatment. Transforming growth factor (TGF)-beta plays a critical role in provoking fibrosis. Interleukin (IL)-10 is a potent immunosuppressive cytokine but its effect on the fibrosing process is unclear. A study was undertaken to examine whether IL-10 affects the production and activation of TGF-beta and thus can attenuate the fibrosis. METHODS Mice were given an intratracheal injection of bleomycin. On day 1 or 14, IL-10 gene was delivered by rapid intravenous injection of Ringer's solution containing plasmid. Two weeks after the plasmid injection the mice were examined for fibrosis. The effect of IL-10 on TGF-beta production by alveolar macrophages was assessed. RESULTS Even when delivered during the fibrosing phase, IL-10 gene significantly suppressed the pathological findings, hydroxyproline content, and production of both active and total forms of TGF-beta1 in the lung. Immunohistochemical analyses showed that alveolar macrophages were one of the major sources of TGF-beta1 and IL-10 diminished the intensity of the staining. IL-10 also suppressed the expression of alphaV beta6 integrin, a molecule that plays an important role in TGF-beta activation, on lung epithelial cells. Alveolar macrophages from bleomycin injected mice produced TGF-beta1 spontaneously ex vivo, which was significantly suppressed by treatment of the mice in vivo or by treatment of the explanted macrophages ex vivo with IL-10. CONCLUSION IL-10 suppresses the production and activation of TGF-beta in the lung and thus attenuates pulmonary fibrosis, even when delivered in the chronic phase.
Collapse
Affiliation(s)
- K Nakagome
- Pulmonary Division, Department of Allergy and Rheumatology, Graduate School of Medicine, University of Tokyo, 7-3-1 Hongo, Tokyo 113-8655, Japan
| | | | | | | | | | | |
Collapse
|
30
|
Okada Y, Tsuzuki Y, Miyazaki J, Matsuzaki K, Hokari R, Komoto S, Kato S, Kawaguchi A, Nagao S, Itoh K, Watanabe T, Miura S. Propionibacterium freudenreichii component 1.4-dihydroxy-2-naphthoic acid (DHNA) attenuates dextran sodium sulphate induced colitis by modulation of bacterial flora and lymphocyte homing. Gut 2006; 55:681-8. [PMID: 16299037 PMCID: PMC1856113 DOI: 10.1136/gut.2005.070490] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.4] [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] [Indexed: 12/28/2022]
Abstract
BACKGROUND AND AIMS 1.4-Dihydroxy-2-naphthoic acid (DHNA), a bifidogenic growth stimulator from Propionibacterium freudenreichii, is thought to have a beneficial effect as a prebiotic; however, its in vivo effect on intestinal inflammation remains unknown. The aim of this study was to determine whether oral administration of DHNA can ameliorate dextran sodium sulphate (DSS) induced colitis and to determine the possible underlying mechanisms. METHOD Colitis was induced in mice by treatment with 2.0% DSS for seven days. DHNA (0.6 or 2.0 mg/kg) was given in drinking water prior to (preventive study) or after (therapeutic study) DSS administration. Colonic damage was histologically scored, and mucosal addressin cell adhesion molecule 1 (MAdCAM-1) expression and beta7 positive cell infiltration were determined by immunohistochemistry. mRNA levels of proinflammatory cytokines (interleukin (IL)-1beta, IL-6 and tumour necrosis factor alpha (TNF-alpha)) were determined by quantitative real time polymerase chain reaction. In addition, bacterial flora in the caecum, concentrations of short chain acids, and luminal pH were examined. RESULTS DHNA improved survival rate and histological damage score in mice administered DSS in both the preventive and therapeutic studies. DHNA significantly attenuated the enhanced expression of MAdCAM-1, the increased beta7 positive cell number, and the increased mRNA levels of IL-1beta, IL-6, and TNF-alpha in DSS treated colon. In addition, the decreased number of Lactobacillus and Enterobacteriaceae induced by DSS was recovered by DHNA. Preventive effects on decrease in butyrate concentration and decrease in pH level in mice administered DSS were also observed in the DHNA preventive study. CONCLUSION DHNA, a novel type of prebiotic, attenuates colonic inflammation not only by balancing intestinal bacterial flora but also by suppressing lymphocyte infiltration through reduction of MAdCAM-1.
Collapse
Affiliation(s)
- Y Okada
- Second Department of Internal Medicine, National Defense Medical College, 3-2 Namiki, Tokorozawa City, Saitama 359-8513, Japan
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
31
|
Horiguchi T, Miyazaki J, Ohira D, Watanabe Y, Hayashi N, Kobayashi K, Torigoe T, Fukumoto K, Ito T, Hirose M, Sasaki Y, Shiga M, Kondo R, Handa M, Tachikawa S. Usefulness of sparfloxacin against Chlamydia pneumoniae infection in patients with bronchial asthma. J Int Med Res 2006; 33:668-76. [PMID: 16372585 DOI: 10.1177/147323000503300609] [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] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The efficacy of sparfloxacin (SPFX) for the control of bronchial asthma was evaluated in 26 patients with suspected Chlamydia pneumoniae infection. Patients were randomly allocated to receive SPFX 200 mg/day (n = 14) or control treatment (n = 12) for 21 days. Significant improvements in serum C-reactive protein levels, and significant decreases in peripheral eosinophil counts, serum eosinophil cationic protein (ECP) and sputum ECP were observed in the SPFX-treated group at day 21. SPFX-treated patients also had a significantly reduced frequency of asthma symptoms, reduced inhalant beta2-stimulant use, and significant increases in morning peak expiratory flow. At the end of the study, C. pneumoniae was undetectable in two SPFX-treated patients who underwent polymerase chain reaction testing, but one control patient who was tested still had detectable levels of C. pneumoniae. These results suggest that SPFX could be used to control bronchial asthma in patients with suspected persistent C. pneumoniae infection.
Collapse
Affiliation(s)
- T Horiguchi
- Department of Respiratory Internal Medicine, Second Training Hospital of Fujita Health University, Nagoya, Japan.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
32
|
Salehi A, Flodgren E, Nilsson NE, Jimenez-Feltstrom J, Miyazaki J, Owman C, Olde B. Free fatty acid receptor 1 (FFA(1)R/GPR40) and its involvement in fatty-acid-stimulated insulin secretion. Cell Tissue Res 2005; 322:207-15. [PMID: 16044321 DOI: 10.1007/s00441-005-0017-z] [Citation(s) in RCA: 122] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2005] [Accepted: 05/10/2005] [Indexed: 11/30/2022]
Abstract
Free fatty acids (FFA) have generally been proposed to regulate pancreatic insulin release by an intracellular mechanism involving inhibition of CPT-1. The recently de-orphanized G-protein coupled receptor, FFA(1)R/GPR40, has been shown to be essential for fatty-acid-stimulated insulin release in MIN6 mouse insulinoma cells. The CPT-1 inhibitor, 2-bromo palmitate (2BrP), was investigated for its ability to interact with mouse FFA(1)R/GPR40. It was found to inhibit phosphatidyl inositol hydrolysis induced by linoleic acid (LA) (100 muM in all experiments) in HEK293 cells transfected with FFA(1)R/GPR40 and in the MIN6 subclone, MIN6c4. 2BrP also inhibited LA-stimulated insulin release from mouse pancreatic islets. Mouse islets were subjected to antisense intervention by treatment with a FFA(1)R/GPR40-specific morpholino oligonucleotide for 48 h. Antisense treatment of islets suppressed LA-stimulated insulin release by 50% and by almost 100% when islets were pretreated with LA for 30 min before applying the antisense. Antisense treatment had no effect on tolbutamide-stimulated insulin release. Confocal microscopy using an FFA(1)R/GPR40-specific antibody revealed receptor expression largely localized to the plasma membrane of insulin-producing cells. Pretreating the islets with LA for 30 min followed by antisense oligonucleotide treatment for 48 h reduced the FFA(1)R/GPR40 immunoreactivity to background levels. The results demonstrate that FFA(1)R/GPR40 is inhibited by the CPT-1 inhibitor, 2BrP, and confirm that FFA(1)R/GPR40 is indeed necessary, at least in part, for fatty-acid-stimulated insulin release.
Collapse
Affiliation(s)
- A Salehi
- Section of Diabetes and Endocrinology, BMC B11, 22184 Lund, Sweden
| | | | | | | | | | | | | |
Collapse
|
33
|
Oikawa Y, Yamato E, Tashiro F, Yamamoto M, Uozumi N, Shimada A, Shimizu T, Miyazaki J. Protective role for cytosolic phospholipase A2alpha in autoimmune diabetes of mice. FEBS Lett 2005; 579:3975-8. [PMID: 15996660 DOI: 10.1016/j.febslet.2005.06.024] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2005] [Revised: 06/10/2005] [Accepted: 06/11/2005] [Indexed: 11/17/2022]
Abstract
Cytosolic phospholipase A(2)alpha (cPLA(2)alpha) plays an important role in arachidonate pathway. To investigate the contribution of cPLA(2)alpha to autoimmune diabetes, we established non-obese diabetic (NOD) mouse, an excellent model for human type 1 diabetes, deficient in cPLA(2)alpha. These mice showed severe insulitis and a higher incidence of diabetes. In their macrophages, decreased prostaglandin E(2) (PGE(2)) induced by cPLA(2)alpha deficiency, and the increase in production of tumor necrosis factor (TNF)-alpha were observed. These results suggested that cPLA(2)alpha plays a protective role in progression of insulitis and development of autoimmune diabetes by suppression of TNF-alpha production from macrophages.
Collapse
Affiliation(s)
- Y Oikawa
- Division of Stem Cell Regulation Research, G6, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan.
| | | | | | | | | | | | | | | |
Collapse
|
34
|
Matsuzaki K, Tsuzuki Y, Matsunaga H, Inoue T, Miyazaki J, Hokari R, Okada Y, Kawaguchi A, Nagao S, Itoh K, Matsumoto S, Miura S. In vivo demonstration of T lymphocyte migration and amelioration of ileitis in intestinal mucosa of SAMP1/Yit mice by the inhibition of MAdCAM-1. Clin Exp Immunol 2005; 140:22-31. [PMID: 15762871 PMCID: PMC1809333 DOI: 10.1111/j.1365-2249.2005.02742.x] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The aetiology of Crohn's disease (CD) remains unknown. Since SAMP1/Yit mice have been reported to develop CD-like spontaneous enteric inflammation, such mice have been studied as an animal model of CD. In this study, using this model we examined T lymphocyte migration in microvessels of intestinal mucosa in vivo and the expression of adhesion molecules by immunohistochemistry. Fluorescence-labelled T lymphocytes isolated from AKR/J (control) mice were injected into the tail veins of recipient mice, and T lymphocyte migration in the postcapillary venules of Peyer's patches, submucosal microvessels, and villus capillaries of the terminal ileum was monitored using an intravital microscope. Adhesion of T lymphocytes was significantly increased in 35 week old SAMP1/Yit mice compared with that in AKR/J or 15 week old SAMP1/Yit mice. Immunohistochemical study showed increased infiltration of CD4, CD8 and beta7-integrin-positive cells and increased expression of MAdCAM-1 and VCAM-1 in the terminal ileum of SAMP1/Yit mice. Antibodies against MAdCAM-1 and VCAM-1 significantly inhibited adhesion of T lymphocytes to microvessels of the terminal ileum, and anti-MAdCAM-1 antibody showed stronger suppressive effect than the anti-VCAM-1 antibody. Periodical administration of anti-MAdCAM-1 antibody twice a week for 7 weeks significantly ameliorated ileitis of SAMP1/Yit mice, but submucosal hypertrophy was not significantly suppressed. Anti-VCAM-1 antibody treatment failed to show significant resolution of ileitis. In addition, anti-MAdCAM-1 antibody treatment also attenuated established ileitis. The results demonstrate that, although MAdCAM-1 and VCAM-1 play an important role in T lymphocyte-endothelial cell interactions in SAMP1/Yit mice, MAdCAM-1 may be a more appropriate target for therapeutic modulation of chronic ileitis.
Collapse
Affiliation(s)
- K Matsuzaki
- Second Department of Internal Medicine, National Defense Medical College, Saitama, Japan
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
35
|
Kawakami T, Ishizaka M, Ishii Y, Eun H, Miyazaki J, Tamura K, Higashi T. Concentration and distribution of several pesticides applied to paddy fields in water and sediment, from Sugao Marsh, Japan. Bull Environ Contam Toxicol 2005; 74:954-61. [PMID: 16097331 DOI: 10.1007/s00128-005-0672-5] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Affiliation(s)
- T Kawakami
- Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8572, Japan
| | | | | | | | | | | | | |
Collapse
|
36
|
Maruyama H, Higuchi M, Higuchi N, Kameda S, Saito M, Sugawa M, Matsuzaki J, Neichi T, Yokoyama S, Miyazaki Y, Miyazaki J, Gejyo F. Post-secretion neutralization of transgene-derived effect: soluble erythropoietin receptor/IgG1Fc expressed in liver neutralizes erythropoietin produced in muscle. J Gene Med 2004; 6:228-37. [PMID: 14978776 DOI: 10.1002/jgm.485] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND The regulation of transgene expression is a key issue for the development of safe gene therapy. Various strategies have been used to regulate protein production at the levels of transgene expression, transcription, translation, and secretion. Neutralization following secretion is another important backup system to prevent super-therapeutic levels of a protein from being expressed by gene transfer. METHODS We tested whether the soluble human erythropoietin receptor (EpoR)/IgG(1)Fc could neutralize the rat Epo at the post-secretory level and suppress erythrocytosis. RESULTS To assess whether soluble human EpoR could bind rat Epo in vitro, we used the Epo-dependent human leukemic cell line, AS-E2. EpoR/IgG(1)Fc significantly inhibited the growth of AS-E2 cells in Epo-containing medium. To test this neutralization effect of EpoR/IgG(1)Fc in vivo, we first transferred pCAGGS-Epo into rat muscle by in vivo electroporation, confirmed erythropoiesis for 3 weeks, and then delivered EpoR/IgG(1)Fc by liver-targeted gene transfer via tail-vein injection with hydrodynamics-based transfection. Reticulocyte counts and hematocrit levels in rats that received pCAGGS-EpoR/IgG(1)Fc injections were significantly lower than in rats that received pCAGGS-EpoR, pCAGGS-IgG(1)Fc, or no injection. CONCLUSIONS These results demonstrate that liver-targeted pCAGGS-EpoR/IgG(1)Fc transfer by tail-vein injection with hydrodynamics-based transfection is useful for neutralizing Epo delivered by in vivo electroporation. This backup strategy at the level of post-secretion could facilitate the clinical application of gene therapy in the future.
Collapse
Affiliation(s)
- H Maruyama
- Division of Clinical Nephrology and Rheumatology, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachidori, Niigata 951-8120, Japan.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
37
|
Horiguchi T, Kondo R, Miyazaki J, Shiga M, Sugiyama M, Handa M, Munekata E. Antibacterial Activity and Clinical Efficacy of Sparfloxacin in Mycobacterium avium-intracellulare Complex Infection. J Int Med Res 2004; 32:530-9. [PMID: 15458286 DOI: 10.1177/147323000403200511] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
In Japan the incidence of atypical mycobacteriosis has steadily increased, with Mycobacterium avium-intracellulare complex (MAC) the most common infecting organism. A standard chemotherapy regimen for MAC infection has not been established because of significant resistance to anti-mycobacterial drugs. Sparfloxacin has good antimicrobial activity against several acid-fast bacteria and is expected to be an effective drug for treating mycobacteriosis. We examined the effects of adding sparfloxacin to anti-tuberculotic combination therapy in six patients with MAC pulmonary disease. Drug susceptibility was also assessed using the agar dilution method. The minimum inhibitory concentrations (MICs) for sparfloxacin, levofloxacin, isoniazid, rifampicin, streptomycin, ethambutol and clarithromycin was measured in clinical isolates from all patients; sparfloxacin showed the lowest MIC. Bacteriological and clinical improvements were observed in the four patients who completed the study. Dosing was discontinued in two patients because of pruritic skin eruptions. Sparfloxacin shows promise as an anti-mycobacterial agent for treating MAC pulmonary disease.
Collapse
Affiliation(s)
- T Horiguchi
- Department of Pulmonary Medicine, Second Hospital for Medical Education, Fujita Health University of Medicine, Nagoya, Japan.
| | | | | | | | | | | | | |
Collapse
|
38
|
Ishii N, Tsuzuki Y, Matsuzaki K, Miyazaki J, Okada Y, Hokari R, Kawaguchi A, Nagao S, Itoh K, Miura S. Endotoxin stimulates monocyte-endothelial cell interactions in mouse intestinal Peyer's patches and villus mucosa. Clin Exp Immunol 2004; 135:226-32. [PMID: 14738449 PMCID: PMC1808937 DOI: 10.1111/j.1365-2249.2003.02369.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Although monocyte-endothelial cell interactions represent an initial step in controlling the recruitment of monocytes in inflamed tissues, their dynamic processes in microvessels of lymphoid (Peyer's patches) and non-lymphoid (villus) regions in gut-associated lymphoid tissue remain poorly understood. We monitored the migration of fluorescence-labelled monocytes derived from the spleen in intestinal microvessels with or without lipopolysaccharide (LPS) treatment and investigated the role of adhesion molecules, P-selectin, vascular cell adhesion molecule (VCAM-1) and intercellular adhesion molecule-1 (ICAM-1). In control mice, there were few interactions between infused monocytes and the endothelium of intestinal microvessels. The monocyte-endothelial interactions (both rolling and adhesion) were significantly increased in intestinal microvessels of LPS-treated mice compared with those in controls. Anti-P-selectin monoclonal antibody (MoAb) significantly suppressed the LPS-induced increase in monocyte rolling in postcapillary venules of Peyer's patches and submucosal venules. Anti-VCAM-1 MoAbs significantly suppressed the LPS-induced increase in monocyte adhesion to postcapillary venules (PCVs) of Peyer's patches, submucosal venules, and villus capillaries. In contrast, anti-ICAM-1 MoAb significantly suppressed the number of adherent monocytes in PCV of Peyer's patches but not in submucosal venules or villus capillaries. These observations demonstrated that LPS treatment resulted in a significant increase in recruitment of monocytes both in microvessels of lymphoid and non-lymphoid regions and that P-selectin, VCAM-1 and ICAM-1 appeared to play important roles in LPS-induced interactions.
Collapse
Affiliation(s)
- N Ishii
- Second Department of Internal Medicine, National Defense Medical College, Saitama, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
39
|
Kameda S, Maruyama H, Higuchi N, Iino N, Nakamura G, Miyazaki J, Gejyo F. Kidney-targeted naked DNA transfer by retrograde injection into the renal vein in mice. Biochem Biophys Res Commun 2004; 314:390-5. [PMID: 14733917 DOI: 10.1016/j.bbrc.2003.12.107] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
We recently developed a novel kidney-targeted gene transfer technique in rats, using the retrograde renal vein injection of naked plasmid DNA. Many animal disease models are created in mice by transgenic or knockout technologies. However, it is much harder to perform renal vein injection in mice than in rats because they have a thin and short vein. Here we transferred the mouse interleukin (IL)-10 gene into mice by retrograde renal vein injection, using an IL-10 and immunoglobulin fusion protein (IL-10/Fc) (96-kDa) expression plasmid, pCAGGS-IL10/Fc. We observed a dose-response relationship between serum IL-10 levels and the amount of injected DNA. The serum IL-10 levels peaked at day 1 and then were sustained for at least 2 weeks. These results demonstrate that the kidney-targeted naked plasmid DNA transfer of mice by retrograde renal vein injection can be achieved, and the kidney serves as a depot organ for the production of large proteins.
Collapse
Affiliation(s)
- S Kameda
- Division of Clinical Nephrology and Rheumatology, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi-dori, 951-8120 Niigata, Japan
| | | | | | | | | | | | | |
Collapse
|
40
|
Kameda S, Maruyama H, Higuchi N, Nakamura G, Iino N, Nishikawa Y, Miyazaki J, Gejyo F. Hydrodynamics-based transfer of PCR-amplified DNA fragments into rat liver. Biochem Biophys Res Commun 2003; 309:929-36. [PMID: 13679063 DOI: 10.1016/j.bbrc.2003.08.087] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
A high level of plasmid DNA expression in rat liver can be achieved by the rapid injection of a large volume of a naked DNA solution into the tail vein, called the 'hydrodynamics-based procedure.' The preparation of PCR-amplified DNA fragments is easier than that of naked DNA. In this paper we evaluated the effects of expressing the erythropoietin (Epo) gene in the rat liver by injecting fCAGGS-Epo, an Epo-expressing PCR-amplified DNA fragment, via the tail vein. After injection of 5 pmol fCAGGS-Epo (10 microg) or pCAGGS-Epo (18.4 microg), plasmid DNA, the serum Epo levels peaked at week 1, then persisted for at least 12 weeks. Transgene-derived Epo secretion resulted in significant erythropoiesis. These results demonstrated that transfer of PCR-amplified DNA fragments into the rat liver via rapid tail vein injection can be achieved. This method may provide a useful means for studying the physiologic function of a putative gene.
Collapse
Affiliation(s)
- S Kameda
- Division of Clinical Nephrology and Rheumatology, Niigata University Graduate School of Medicine and Dental Sciences, 1-757 Asahimachi-dori, Niigata 951-8120, Japan
| | | | | | | | | | | | | | | |
Collapse
|
41
|
Miyatsuka T, Kaneto H, Kajimoto Y, Hirota S, Arakawa Y, Fujitani Y, Umayahara Y, Watada H, Yamasaki Y, Magnuson MA, Miyazaki J, Hori M. Ectopically expressed PDX-1 in liver initiates endocrine and exocrine pancreas differentiation but causes dysmorphogenesis. Biochem Biophys Res Commun 2003; 310:1017-25. [PMID: 14550306 DOI: 10.1016/j.bbrc.2003.09.108] [Citation(s) in RCA: 82] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
To date, the potency of pancreatic and duodenal homeobox gene 1 (PDX-1) in inducing differentiation into insulin-producing cells has been demonstrated in some cells and tissues. In order to carry out efficient screening of somatic tissues and cells that can transdifferentiate into beta-cell-like cells in response to PDX-1, we generated CAG-CAT-PDX1 transgenic mice carrying a transgene cassette composed of the chicken beta-actin gene (CAG) promoter and a floxed stuffer DNA sequence (CAT) linked to PDX-1 cDNA. When the mice were crossed with Alb-Cre mice, which express the Cre recombinase driven by the rat albumin gene promoter, PDX-1 was expressed in more than 50% of hepatocytes and cholangiocytes. The PDX-1 (+) livers expressed a variety of endocrine hormone genes such as insulin, glucagon, somatostatin, and pancreatic polypeptide. In addition, they expressed exocrine genes such as elastase-1 and chymotrypsinogen 1B. However, the mice exhibited marked jaundice due to conjugated hyperbilirubinemia, and the liver tissue displayed abnormal lobe structures and multiple cystic lesions. Thus, the in vivo ectopic expression of PDX-1 in albumin-producing cells was able to initiate but not complete the differentiation of liver cells into pancreatic cells. The conditional PDX-1 transgenic mouse system developed in this study appeared to be useful for efficient screening of PDX-1 responsive somatic tissues and cells.
Collapse
Affiliation(s)
- T Miyatsuka
- Department of Internal Medicine and Therapeutics, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
42
|
Higuchi N, Maruyama H, Kuroda T, Kameda S, Iino N, Kawachi H, Nishikawa Y, Hanawa H, Tahara H, Miyazaki J, Gejyo F. Hydrodynamics-based delivery of the viral interleukin-10 gene suppresses experimental crescentic glomerulonephritis in Wistar-Kyoto rats. Gene Ther 2003; 10:1297-310. [PMID: 12883526 DOI: 10.1038/sj.gt.3301988] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Gene therapy is expected to revolutionize the treatment of kidney diseases. Viral interleukin (vIL)-10 has a variety of immunomodulatory properties. We examined the applicability of vIL-10 gene transfer to the treatment of rats with crescentic glomerulonephritis, a T helper 1 (Th 1) predominant disease. To produce the disease, Wistar-Kyoto rats were injected with a rabbit polyclonal anti-rat glomerular basement membrane antibody. After 3 h, a large volume of plasmid DNA expressing vIL-10 (pCAGGS-vIL-10) solution was rapidly injected into the tail vein. pCAGGS solution was similarly injected into control rats (pCAGGS rats). We confirmed the presence of vector-derived vIL-10 mainly in the liver and observed high serum vIL-10 levels in pCAGGS-vIL-10-injected rats. Compared with the pCAGGS rats, the pCAGGS-vIL-10 rats showed significant therapeutic effects: reduced frequency of crescent formation, decrease in the number of total cells, macrophages, and CD4+ T cells in the glomeruli, decrease in urine protein, and attenuation of kidney dysfunction. Using quantitative real-time polymerase chain reaction, we also observed that this model was Th1-predominant in the glomeruli and that the ratio of the transcripts of CD4, interferon-gamma, tumor necrosis factor-alpha, and monocyte chemotactic protein-1 to the transcripts of glucose-6-phosphate dehydrogenase in the glomeruli were all significantly lower in the pCAGGS-vIL-10 rats than in the pCAGGS rats. These results demonstrate that pCAGGS-vIL-10 gene transfer by hydrodynamics-based transfection suppresses crescentic glomerulonephritis.
Collapse
Affiliation(s)
- N Higuchi
- Division of Clinical Nephrology and Rheumatology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
43
|
Taniguchi H, Yamato E, Tashiro F, Ikegami H, Ogihara T, Miyazaki J. beta-cell neogenesis induced by adenovirus-mediated gene delivery of transcription factor pdx-1 into mouse pancreas. Gene Ther 2003; 10:15-23. [PMID: 12525833 DOI: 10.1038/sj.gt.3301846] [Citation(s) in RCA: 95] [Impact Index Per Article: 4.5] [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: 11/09/2022]
Abstract
beta-cell neogenesis is expected to provide a new therapy for diabetes. Numerous studies have demonstrated that transcriptional regulation involving pdx-1 is essential for endocrine neogenesis in vivo and in vitro. Therefore, it is possible that ectopic expression of pdx-1 in the pancreas could induce endocrine neogenesis. To test this possibility, we performed safe and efficient gene delivery of the pdx-1 gene into the mouse pancreas through the common bile duct using adenoviral vectors, and examined the effects of the ectopic expression of pdx-1. Here we show that adenovirus-mediated expression of pdx-1 can activate the endogenous pdx-1 gene, leading to beta-cell neogenesis and ductal proliferation. This technique is similar to the endoscopic retrograde cholangiopancreatography, which has been already established as a safe procedure for humans. Thus, beta-cell neogenesis induced by adenovirus-mediated expression of pdx-1 provides a novel strategy for gene therapy for a cure for diabetes mellitus.
Collapse
Affiliation(s)
- H Taniguchi
- Division of Stem Cell Regulation Research, Osaka University Graduate School of Medicine, Osaka, Japan
| | | | | | | | | | | |
Collapse
|
44
|
Minami T, Murakami T, Noguchi T, Miyazaki J, Hamakubo T, Aird W, Kodama T. 1P-0178 Interaction between hematopoietically expressed homebox (Hex) and GATA transcription factors in vascular endothelium inhibits flk-1/KDR and its mediated VEGF signaling. ATHEROSCLEROSIS SUPP 2003. [DOI: 10.1016/s1567-5688(03)90251-0] [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: 10/25/2022]
|
45
|
Yokoi T, Fukuo K, Hotta M, Miyazaki J, Ichijo H, Ogihara T. 1P-0180 High glucose upregulates plasminogen activator inhibitor-1 (PAI-1) expression through activation of apoptosis signal-regulating kinase 1 (ASK1) in endothelial cells. ATHEROSCLEROSIS SUPP 2003. [DOI: 10.1016/s1567-5688(03)90253-4] [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]
|
46
|
Umeda Y, Iwata H, Yoshikawa S, Matsuno Y, Marui T, Nitta T, Idia Y, Takagi H, Mori Y, Miyazaki J, Kosugi A, Hirose H. Gene gun-mediated CTLA4Ig-gene transfer for modification of allogeneic cardiac grafts. Transplant Proc 2002; 34:2622-3. [PMID: 12431548 DOI: 10.1016/s0041-1345(02)03448-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Y Umeda
- First Department of Surgery, Gifu University School of Medicine, Tsukasa-machi, Gifu, Japan.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
47
|
Matsuno Y, Iwata H, Yoshikawa S, Umeda Y, Iida Y, Takagi H, Mori Y, Miyazaki J, Kosugi A, Hirose H. Suppression of graft coronary arteriosclerosis by gene gun-mediated CTLA4-Ig gene transfer. Transplant Proc 2002; 34:2619-21. [PMID: 12431547 DOI: 10.1016/s0041-1345(02)03447-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Y Matsuno
- First Department of Surgery, Gifu University School of Medicine, Tsukasa-machi, Gifu, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
48
|
Kimura F, Gotoh M, Tanaka T, Luo Z, Miyazaki J, Uede T, Monden M, Miyasaka M. Locally expressed CTLA4-Ig in a pancreatic beta-cell line suppresses accelerated graft rejection response induced by donor-specific transfusion. Diabetologia 2002; 45:831-40. [PMID: 12107727 DOI: 10.1007/s00125-002-0844-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2001] [Revised: 02/11/2002] [Indexed: 11/25/2022]
Abstract
AIMS/HYPOTHESIS This study examined whether locally expressed CTLA4-Ig can suppress the accelerated islet allograft rejection that is induced by donor-specific transfusion. METHODS CTLA4-Ig-transfected or parental MIN6 cells were transplanted subcutaneously into the right flank of streptozotocin-induced diabetic C3H/Hej mice with or without donor-specific transfusion. For donor-specific transfusion, spleen cells from C57BL/6 mice were injected i.v. at the time of transplantation. In other experiments, CTLA4-Ig-transfected and parental MIN6 cells were transplanted separately into each flank, together with donor-specific transfusion. Rejection was defined as a blood glucose concentration of more than 300 mg/dl in two consecutive measurements, and graft survival was confirmed by hyperglycaemia after the grafts were removed. The effect of an anti-CTLA4 antibody on the survival of CTLA4-Ig-transfected MIN6 cells was also examined. RESULTS In 7 of 12 donor-specific transfusion sensitised mice, CTLA4-Ig-transfected MIN6 cells remained viable 20 days after grafting, whereas all parental MIN6 cells ( n = 10) were rejected promptly, within 14 days. The prolonged allograft survival was observed even in the absence of detectable levels of serum CTLA4-Ig, while the surviving allografts continued to produce CTLA4-Ig in situ. This protection was abrogated by an anti-CTLA4 antibody, but not by a control antibody. Furthermore, six animals that maintained normoglycaemia after the separate transplantation of parental and CTLA4-Ig-transfected MIN6 cells into each flank all showed abrupt hyperglycaemia after the CTLA4-Ig/MIN6 graft was removed, suggesting that this protection operated locally. CONCLUSION/INTERPRETATION A beta-cell line genetically engineered to secrete CTLA4-Ig can protect a graft locally from the alloimmune response induced by donor-specific transfusion.
Collapse
MESH Headings
- Abatacept
- Animals
- Antigens, CD
- Antigens, Differentiation/genetics
- Antigens, Differentiation/metabolism
- Blood Glucose/metabolism
- COS Cells
- CTLA-4 Antigen
- Cell Line
- Chlorocebus aethiops
- Diabetes Mellitus, Experimental/blood
- Diabetes Mellitus, Experimental/immunology
- Diabetes Mellitus, Experimental/therapy
- Graft Rejection/immunology
- Graft Rejection/prevention & control
- Immunoconjugates
- Immunoglobulin Fc Fragments/genetics
- Immunoglobulin Fc Fragments/metabolism
- Insulinoma
- Islets of Langerhans/immunology
- Islets of Langerhans/pathology
- Islets of Langerhans Transplantation/immunology
- Lymphocyte Transfusion
- Male
- Mice
- Mice, Inbred C3H
- Mice, Inbred C57BL
- Pancreatic Neoplasms
- Recombinant Proteins/metabolism
- Spleen/immunology
- Transfection
- Transplantation, Homologous
- Tumor Cells, Cultured
Collapse
Affiliation(s)
- F Kimura
- Molecular and Cellular Recognition, Department of Surgery and Clinical Oncology, Osaka University Graduate School of Medicine, Osaka, Japan
| | | | | | | | | | | | | | | |
Collapse
|
49
|
Maruyama H, Higuchi N, Nishikawa Y, Kameda S, Iino N, Kazama JJ, Takahashi N, Sugawa M, Hanawa H, Tada N, Miyazaki J, Gejyo F. High-level expression of naked DNA delivered to rat liver via tail vein injection. J Gene Med 2002; 4:333-41. [PMID: 12112650 DOI: 10.1002/jgm.281] [Citation(s) in RCA: 93] [Impact Index Per Article: 4.2] [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: 11/09/2022] Open
Abstract
BACKGROUND High levels of foreign gene expression in mouse hepatocytes can be achieved by rapid tail vein injection of a large volume of a naked DNA solution, the 'hydrodynamics-based procedure'. Rats are more tolerant of the frequent phlebotomies required for monitoring blood parameters than mice, and thus are better for some biomedical research. METHODS We tested this technique for the delivery of a therapeutic protein in normal rats, using a rat erythropoietin (Epo) expression plasmid vector, pCAGGS-Epo. RESULTS We obtained maximal Epo expression when the DNA solution was injected in a volume of 25 ml (approximately 100 ml/kg body weight) within 15 s. We observed a dose-response relationship between serum Epo levels and the amount of injected DNA up to 800 microg. Using quantitative real-time PCR, the vector-derived Epo mRNA expression was mainly detected in the liver. When a lacZ expression plasmid was injected similarly, beta-galactosidase was exclusively detected in the liver, mainly in hepatocytes. Toxicity attributable to the technique was mild and transient, as assessed by histochemical analysis. Epo gene expression and erythropoiesis occurred with Epo gene transfer in a dose-dependent manner, and persisted for at least 12 weeks, the last time point examined. Repeated administration of the plasmid DNA also effectively led to erythropoiesis. CONCLUSIONS These results demonstrate that gene transfer into the liver via rapid tail vein injection can easily be achieved in the rat, which is more than 10 times larger than the mouse, and has significant value for gene function analysis in rats.
Collapse
Affiliation(s)
- H Maruyama
- Division of Clinical Nephrology and Rheumatology, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi-dori, Niigata 951-8120, Japan.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
50
|
Adachi O, Nakano A, Sato O, Kawamoto S, Tahara H, Toyoda N, Yamato E, Matsumori A, Tabayashi K, Miyazaki J. Gene transfer of Fc-fusion cytokine by in vivo electroporation: application to gene therapy for viral myocarditis. Gene Ther 2002; 9:577-83. [PMID: 11973633 DOI: 10.1038/sj.gt.3301691] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2001] [Accepted: 02/04/2002] [Indexed: 11/09/2022]
Abstract
Among a number of techniques for gene transfer in vivo, the direct injection of plasmid DNA into muscle is simple, inexpensive and safe. Although combining direct DNA injection with in vivo electroporation increases the efficiency of gene transfer into muscle, applications of this method have remained limited because of the relatively low expression level. To overcome this problem, we developed a plasmid vector that expresses a secretory protein as a fusion protein with the noncytolytic immunoglobulin Fc portion and used it for electroporation-mediated viral interleukin 10 (vIL-10) expression in vivo. The fusion cytokine vIL-10/mutFc was successfully expressed and the peak serum concentration of vIL-10 was almost 100-fold (195 ng/ml) higher than with a non-fusion vIL-10 expression plasmid. The expressed fusion cytokine suppressed the phytohemagglutinin-induced IFN-gamma production by human peripheral blood mononuclear cells and decreased the mortality in a mouse viral myocarditis model as effectively as vIL-10 expression. These results demonstrate that the transfer of plasmid DNA expressing a noncytolytic Fc-fusion cytokine is useful to deliver enhanced levels of cytokine without altering general biological activities. This simple and efficient system should provide a new approach to gene therapy for human diseases and prove very useful for investigating the function of newly discovered secretory protein genes.
Collapse
Affiliation(s)
- O Adachi
- Division of Stem Cell Regulation Research, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|