Research Topics
| E ImaiSummaryAffiliation: Osaka University Country: Japan Publications
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Publications
Glowing podocytes in living mouse: transgenic mouse carrying a podocyte-specific promoterE Imai
First Department of Medicine, University School of Medicine, Osaka University, Osaka, Japan
Exp Nephrol 7:63-6. 1999....
Cardiovascular effect of normalizing the hematocrit level during erythropoietin therapy in predialysis patients with chronic renal failureT Hayashi
Department of Nephrology, Osaka Prefectural Hospital, Osaka University School of Medicine, Japan terry
Am J Kidney Dis 35:250-6. 2000..In conclusion, from the perspective of LVH regression, the normalization of Ht was found to be more effective than that associated with a partial correction of anemia during rHuEPO therapy...
Gene therapy approach in renal disease in the 21st centuryE Imai
Division of Nephrology, Department of Internal Medicine and Therapeutics, Graduate School of Medicine, Osaka University, Japan
Nephrol Dial Transplant 16:26-34. 2001..The emerging strategies of gene transfer in kidneys are reviewed and the potential application of gene therapy in renal diseases are discussed...
Tornado extraction: a method to enrich and purify RNA from the nephrogenic zone of the neonatal rat kidneyTakahito Ito
Department of Internal Medicine and Therapeutics, Osaka University Graduate School of Medicine, 2 2 Yamadaoka, Box A8, Suita, Osaka 565 0871, Japan
Kidney Int 62:763-9. 2002..Therefore, expanding our knowledge of molecules that are associated with nephrogenesis will be helpful to understand the whole process...
Therapeutic effect of all-trans retinoic acid on rats with anti-GBM antibody glomerulonephritisSusumu Oseto
Department of Internal Medicine and Therapeutics, Osaka University Graduate School of Medicine, Osaka, Japan
Kidney Int 64:1241-52. 2003..Suppression of a wide variety of gene expression may partly explain the mechanism of ATRA's antiproliferative and anti-inflammatory effects. These data suggest a novel therapeutic application of ATRA toward glomerulonephritis...
Estimation of glomerular filtration rate by the MDRD study equation modified for Japanese patients with chronic kidney diseaseEnyu Imai
Department of Nephrology, Osaka University Graduate School of Medicine, Suita, Osaka 565 0871, Japan
Clin Exp Nephrol 11:41-50. 2007..In the present study, the equations originally developed for a Caucasian population were tested in Japanese CKD patients, and modified with the Japanese coefficient determined by the data...
Adenosine A1 receptor antagonist improves intradialytic hypotensionE Imai
Department of Nephrology, Osaka University Graduate School of Medicine, Suita 565 0871, Osaka, Japan
Kidney Int 69:877-83. 2006..No apparent side effects were observed from treatment with FK352. In conclusion, the A1 antagonist FK352 may offer a novel therapeutic option for chronic dialysis patients associated with intradialytic hypotension...
Prevalence of chronic kidney disease (CKD) in the Japanese general population predicted by the MDRD equation modified by a Japanese coefficientEnyu Imai
Department of Nephrology, Osaka University Graduate School of Medicine, Suita, Osaka 565 0871, Japan
Clin Exp Nephrol 11:156-63. 2007..However, to date, a nationwide epidemiological study has not been conducted yet to survey the CKD population...
Targeting growth factors to the kidney: myth or reality?Enyu Imai
Division of Nephrology, Department of Internal Medicine and Therapeutics, Osaka University School of Medicine, Osaka, Japan
Curr Opin Nephrol Hypertens 11:49-57. 2002..Thus, targeting growth factors and cytokines in renal diseases could be a promising therapeutic approach...
Can bone marrow differentiate into renal cells?Enyu Imai
Department of Internal Medicine and Therapeutics, Division of Nephrology, Osaka University Graduate School of Medicine, 2 2 Yamadaoka, Suita, 565 0871 Osaka, Japan
Pediatr Nephrol 17:790-4. 2002..Identification of factors that support stem cells or promote their differentiation should provide a relevant step towards cell therapy...
Kidney disease screening program in Japan: history, outcome, and perspectivesEnyu Imai
Department of Nephrology, Osaka University Graduate School of Medicine, Suita, Osaka 565 0871, Japan
Clin J Am Soc Nephrol 2:1360-6. 2007....
Chronic Kidney Disease Japan Cohort (CKD-JAC) study: design and methodsEnyu Imai
Department of Nephrology, Osaka University Graduate School of Medicine, Suita, Japan
Hypertens Res 31:1101-7. 2008..Insights from the CKD-JAC study will provide a basis for future interventional trials focused on reducing the burden of ESRD and CVD in patients with CKD in Japan...
Gene therapy in renal diseasesEnyu Imai
Division of Nephrology, Department of Internal Medicine, Osaka University Graduate School of Medicine, Japan
Kidney Int 65:1551-5. 2004..The importation of the novel technology, for example hybrid stem cell-gene therapy could promote the gene therapy of renal diseases toward clinical application...
Towards gene therapy for renal diseasesE Imai
Division of Nephrology, Osaka University School of Medicine
Nephrologie 19:397-402. 1998..We believe that the gene transfer technique will become common strategy to study the molecular aspect of the renal diseases and will be possibly applicable to molecular intervention in nephrology...
Carbonic adsorbent AST-120 retards progression of renal failure by additive effect with ACEI and protein restriction dietEnyu Imai
Division of Nephrology, Department of Internal Medicine and Therapeutics, Osaka University Graduate School of Medicine, Suita, Osaka 565 0871, Japan
Clin Exp Nephrol 7:113-9. 2003....
Olmesartan reducing incidence of endstage renal disease in diabetic nephropathy trial (ORIENT): rationale and study designEnyu Imai
Department of Nephrology, Osaka University Graduate School of Medicine, Suita, Japan
Hypertens Res 29:703-9. 2006..0 mg/dl, the need for chronic dialysis, or renal transplantation) or death. The average follow-up period is 4 years and the study ends in 2009...
Strategies of gene transfer to the kidneyE Imai
The First Department of Medicine, Osaka University School of Medicine, Suita, Japan
Kidney Int 53:264-72. 1998..We believe that gene transfer techniques will become common tools for the dissection of molecular aspects of diseases and possibly for gene therapy in the field of nephrology...
Modification of the Modification of Diet in Renal Disease (MDRD) Study equation for JapanEnyu Imai
Department of Nephrology, Osaka University Graduate School of Medicine, Japan
Am J Kidney Dis 50:927-37. 2007..The Modification of Diet in Renal Disease (MDRD) Study equation was developed in whites and African Americans, but performance was not evaluated in Japanese...
Slower decline of glomerular filtration rate in the Japanese general population: a longitudinal 10-year follow-up studyEnyu Imai
Department of Nephrology, Osaka University Graduate School of Medicine, Suita, Japan
Hypertens Res 31:433-41. 2008..Hypertension, proteinuria and lower GFR were found to be significant risk factors for a faster decline of GFR...
Up-regulation of HSP47 in the mouse kidneys with unilateral ureteral obstructionT Moriyama
First Department of Medicine, Osaka University School of Medicine, Faculty of Health and Sport Sciences, Japan
Kidney Int 54:110-9. 1998..It is well recognized that renin-angiotensin system (RAS) is enhanced in the setting of UUO and that enhanced RAS has been implicated in the pathogenesis of interstitial fibrosis in the obstructed kidneys...
Bone marrow is a reservoir of repopulating mesangial cells during glomerular remodelingT Ito
Department of Internal Medicine and Therapeutics, Osaka University School of Medicine, Osaka University, Suita, Osaka, Japan
J Am Soc Nephrol 12:2625-35. 2001..The results indicate that the bone marrow can give rise to mesangial cells in vivo...
Electroporation-mediated PDGF receptor-IgG chimera gene transfer ameliorates experimental glomerulonephritisH Nakamura
Department of Internal Medicine and Therapeutics, Osaka University Graduate School of Medicine, Suita, Japan
Kidney Int 59:2134-45. 2001..CONCLUSION: These results suggest that gene therapy by the manipulation of PDGF action using electroporation-mediated PDGFR/Fc gene transfer to the skeletal muscle might be a useful treatment for mesangioproliferative glomerulonephritis...
A case of tacrolimus nephrotoxicity appearing in a second renal transplantation patientK Oka
Department of Internal Medicine and Therapeutics, Osaka University Graduate School of Medicine, Suita, Japan
Clin Transplant 15:30-4. 2001..The case is interesting in considering the functional toxicity of tacrolimus and the difference between tacrolimus and cyclosporin in terms of immunosuppressive and nephrotoxic actions...
Transforming growth factor-beta 1 antisense oligodeoxynucleotides block interstitial fibrosis in unilateral ureteral obstructionY Isaka
Department of Internal Medicine and Therapeutics, Osaka University Graduate School of Medicine, Osaka, Japan
Kidney Int 58:1885-92. 2000....
TCV-116 inhibits interstitial fibrosis and HSP47 mRNA in rat obstructive nephropathyT Moriyama
First Department of Medicine, Osaka University School of Medicine, Faculty of Health, Japan
Kidney Int Suppl 63:S232-5. 1997..A possible involvement of HSP47 in the pathogenesis of interstitial fibrosis in UUO is suggested; however, further investigation is required to identify the signals involved in the induction of HSP47 in UUO...
Increased expression of renin in chronic allograft nephropathyK Oka
Department of Pathology, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
Transplant Proc 37:2131-4. 2005..Only a significantly higher serum creatinine was found in the CAN group. CONCLUSIONS: The increased renin-positive cells in JGA suggest a significant role of the intrarenal renin-angiotensin system activation in the development of CAN...
Electroporation-mediated gene transfer that targets glomeruliM Tsujie
Department of Internal Medicine and Therapeutics, Osaka University Graduate School of Medicine, Suita, Japan
J Am Soc Nephrol 12:949-54. 2001..In conclusion, gene transfer into renal artery followed by electroporation was an effective and simple strategy for gene transfer that targets glomerular mesangial cells...
A clinicopathologic study of p27(kip1) expression in renal allograft biopsyK Oka
Department of Pathology, Osaka Kaisei Hospital, Osaka, Japan
Transplant Proc 39:3068-71. 2007..In IgA nephropathy, a decreased p27kip1 expression in podocytes has been reported to be related to lesion formation of focal segmental glomerulosclerosis and renal dysfunction. We reviewed the p27kip1 expression in transplanted kidneys...
[Gene therapy and tissue engineering in nephrology and renal transplantation]E Imai
Department of Internal Medicine and Therapeutics, Osaka University Graduate School of Medicine
Nippon Rinsho 59:65-71. 2001..Completion of bioinformatics, can facilitate the above post-genome project...
Effects of olmesartan on renal and cardiovascular outcomes in type 2 diabetes with overt nephropathy: a multicentre, randomised, placebo-controlled studyE Imai
Department of Nephrology, Nagoya University Graduate School of Medicine, 65 Tsurumai, Showa Ku, Nagoya, Aichi 466 8550, Japan
Diabetologia 54:2978-86. 2011..The renal and cardiovascular protective effects of angiotensin receptor blocker (ARB) remain controversial in type 2 diabetic patients treated with a contemporary regimen including an angiotensin converting enzyme inhibitor (ACEI)...
Electroporation-mediated HGF gene transfection protected the kidney against graft injuryY Isaka
Department of Internal Medicine and Therapeutics, Osaka University Graduate School of Medicine, Suita, Japan
Gene Ther 12:815-20. 2005..We conclude that electroporation-mediated ex vivo HGF gene transfection protects the kidney against graft injury in a porcine model...
Fluvastatin suppresses oxidative stress and fibrosis in the interstitium of mouse kidneys with unilateral ureteral obstructionT Moriyama
Department of Internal Medicine and Therapeutics, Osaka University Graduate School of Medicine, School of Health and Sport Sciences, Osaka University, Osaka, Japan
Kidney Int 59:2095-103. 2001..Fluvastatin is an HMG-CoA reductase inhibitor and has been demonstrated to have an antioxidant activity in vitro...
Prolonged transgene expression in glomeruli using an EBV replicon vector system combined with HVJ liposomesM Tsujie
Department of Internal Medicine and Therapeutics (A8, and Division of Gene Therapy Science, Osaka University Graduate School of Medicine, Osaka, Japan
Kidney Int 59:1390-6. 2001....
Transcription factor Ets-1 is essential for mesangial matrix remodelingM Mizui
Department of Nephrology, Osaka University Graduate School of Medicine A8, Suita, Japan
Kidney Int 70:298-305. 2006..In contrast, knockdown of Ets-1 in glomeruli resulted in severe ECM deposition in diseased glomeruli. In conclusion, Ets-1 promotes degradation of ECM proteins and is critical for integral glomerular reorganization...
Rapid and diverse changes of gene expression in the kidneys of protein-overload proteinuria mice detected by microarray analysisY Nagasawa
Department of Internal Medicine and Therapeutics, Graduate School of Medicine (A8, Osaka University, 2-2 Yamadaoka, Suita, Osaka 560-0871, Japan
Nephrol Dial Transplant 16:923-31. 2001..CONCLUSION: The microarray analysis revealed that the renal gene expression pattern was changed dynamically in mice with experimentally induced proteinuria within a few weeks...
Exploring RNA interference as a therapeutic strategy for renal diseaseY Takabatake
Department of Internal Medicine and Therapeutics, Osaka University Graduate School of Medicine (A8, Suita, Japan
Gene Ther 12:965-73. 2005..In addition, vector-based RNAi also inhibited TGF-beta1 expression in vitro and in vivo. In conclusion, siRNA-directed TGF-beta1 silencing may be of therapeutic value in the prevention and treatment of fibrotic diseases...
Prevalence of chronic kidney disease in the Japanese general populationEnyu Imai
Department of Nephrology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
Clin Exp Nephrol 13:621-30. 2009..We re-estimated the prevalence of CKD by measuring proteinuria using a dipstick test and by calculating the GFR using a new equation that estimates GFR based on data from the Japanese annual health check program in 2005...
Serum NTX is a practical marker for assessing antiresorptive therapy for glucocorticoid treated patients with chronic kidney diseaseTakayuki Hamano
Department of Internal Medicine, Osaka University School of Medicine, Box A8, 2-2 Yamada-oka, Suita 565-0871, Japan
Bone 39:1067-72. 2006..CONCLUSION: Higher S-NTX in the GC-treated group suggests that bone resorption is enhanced by GC. In CKD patients with mild renal dysfunction, S-NTX is a practical and useful marker for monitoring bone resorption during GC treatment...
The impact of diabetes mellitus on vitamin D metabolism in predialysis patientsHirotaka Tanaka
Department of Geriatric Medicine and Nephrology, Osaka University Graduate School of Medicine, B6, 2 2 Yamadaoka, Suita, Osaka, Japan
Bone 45:949-55. 2009..Poorer vitamin D status and higher CaP product might be partly responsible for functional and structural changes of vasculature, respectively, in DM...
Expression of the Na+/myo-inositol cotransporter in the juxtaglomerular regionA Yamauchi
First Department of Medicine, Osaka University School of Medicine, Japan
Kidney Int Suppl 67:S183-5. 1998..Because SMIT expression seemed to be proportional to the magnitude of NaCl reabsorption, it may be a good marker for examination of the tubuloglomerular feedback mechanism in vivo...
Probucol suppresses ICAM-1 expression in rat mesangial cells: possible role of IL-1T Sugiura
First Department of Medicine, Osaka University School of Medicine, Osaka National Hospital, Japan
Kidney Int Suppl 71:S167-70. 1999..In this brief report, we review the actions of probucol on IL-1 secretion and discuss the possible mechanism by which probucol may suppress the glomerular injury...
Smooth muscle alpha-actin deficiency in myofibroblasts leads to enhanced renal tissue fibrosisMasanobu Takeji
Genome Information Research Center, Research Institute for Microbial Diseases, Graduate School of Medicine, Osaka University, Suita, Osaka 565 0871, Japan
J Biol Chem 281:40193-200. 2006..These results indicate that SMalphaA suppresses the pro-fibrotic properties of myofibroblasts, highlighting the significance of smooth muscle-related proteins in moderating chronic organ fibrosis under pathological conditions...
Introduction of DNA enzyme for Egr-1 into tubulointerstitial fibroblasts by electroporation reduced interstitial alpha-smooth muscle actin expression and fibrosis in unilateral ureteral obstruction (UUO) ratsH Nakamura
Department of Internal Medicine and Therapeutics, Osaka University Graduate School of Medicine, Suita, Japan
Gene Ther 9:495-502. 2002....
Risk factors for graft loss in patients with recurrent IGA nephropathy after renal transplantationY Namba
Department of Pathology, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
Transplant Proc 36:1314-6. 2004..CONCLUSIONS: Recurrent transplant IgAN increased with long-term graft survival and risk factors for graft loss due to recurrent IgAN were similar to those among IgAN in native kidneys...
Electroporation-mediated HGF gene transfer ameliorated cyclosporine nephrotoxicityMasayuki Mizui
Department of Internal Medicine and Therapeutics, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
Kidney Int 65:2041-53. 2004..CONCLUSION: We demonstrated that HGF gene transfer reduced CsA-induced tubular cell apoptosis and interstitial fibrosis. HGF gene transfer could be a potential strategy for preventing renal fibrosis...
Application of bone marrow-derived stem cells in experimental nephrologyT Ito
Osaka University School of Medicine, Department of Internal Medicine and Therapeutics, Osaka, Japan
Exp Nephrol 9:444-50. 2001..Using this system, we have reported that bone marrow provides mesangial cells during repair process. In this manuscript, we briefly summarize our experiences...
Differential diagnosis of prerenal azotemia from acute tubular necrosis and prediction of recovery by Doppler ultrasoundM Izumi
Department of Internal Medicine and Therapeutics, Osaka University Graduate School of Medicine, Osaka, Japan
Am J Kidney Dis 35:713-9. 2000..Furthermore, one can predict recovery from ATN by Doppler findings. Thus, we consider Doppler ultrasound an effective diagnostic tool in ARF...
Early treatment with corticosteroids ameliorates proteinuria, proliferative lesions, and mesangial phenotypic modulation in adult diffuse proliferative IgA nephropathyT Shoji
Department of Nephrology, Osaka Prefectural General Hospital, Japan
Am J Kidney Dis 35:194-201. 2000..EDA-FN did not change in either group. We conclude that early treatment with corticosteroids for adult diffuse proliferative IgA nephropathy is effective in reducing renal injury...
Renal artery injection for delivery of biological materials to the glomerulusYoshitsugu Takabatake
Department of Nephrology, Osaka University Graduate School of Medicine, Osaka, Japan
Nephrology (Carlton) 13:23-6. 2008..We investigated whether injection of synthetic small interfering siRNAs via renal artery followed by electroporation could be effective in silencing specific genes in glomerulus...
Y-27632 prevents tubulointerstitial fibrosis in mouse kidneys with unilateral ureteral obstructionKatsuyuki Nagatoya
Department of Internal Medicine and Therapeutics, Osaka University Graduate School of Medicine, and School ofHealth and Sport Sciences, Osaka University, Osaka, Japan
Kidney Int 61:1684-95. 2002..CONCLUSIONS: The Rho-ROCK system may play an important role in the development of tissue fibrosis, and the Rho-ROCK signaling pathway may be a new therapeutic target for preventing interstitial fibrosis in progressive renal disease...
[Equation for estimating GFR from creatinine in Japan]Enyu Imai
Department of Nephrology, Graduate School of Medicine, Osaka University
Nihon Rinsho 66:1725-9. 2008..The new Japanese equations provide more accurate estimation of GFR for Japanese population...
Pharmacokinetics of olmesartan medoxomil in hemodialysis patients: little effect of dialysis upon its pharmacokineticsHirotaka Tanaka
Department of Nephrology, Osaka University Graduate School of Medicine, B6 2 2 Yamadaoka, Suita, Osaka, 565 0871, Japan
Clin Exp Nephrol 13:61-5. 2009..This result suggests that plasma concentration of olmesartan medoxomil does not decrease during hemodialysis, and that it is not necessary to change prescription on hemodialysis day or not...
Integrated therapies including erythropoietin decrease the incidence of dialysis: lessons from mapping the incidence of end-stage renal disease in JapanYoshiyuki Furumatsu
Department of Nephrology, Osaka University Graduate School of Medicine, 2 2 Yamadaoka A8, Suita City, Osaka 565 0871, Japan
Nephrol Dial Transplant 23:984-90. 2008..In order to test the hypothesis that the usage of EPO in predialysis CKD patients may ameliorate the progression of renal disease, we conducted a macro-level observational study dealing with all Japanese predialysis CKD patients...
Revised equations for estimated GFR from serum creatinine in JapanSeiichi Matsuo
Department of Nephrology, Nagoya University Graduate School of Medicine, Nagoya, Japan
Am J Kidney Dis 53:982-92. 2009..Our previously reported GFR-estimating equations for Japanese had limitations because all participants had a GFR less than 90 mL/min/1.73 m2 and serum creatinine was assayed in different laboratories...
Effect of a carbonaceous oral adsorbent on the progression of CKD: a multicenter, randomized, controlled trialTadao Akizawa
Department of Nephrology, Showa University School of Medicine, Tokyo, Japan
Am J Kidney Dis 54:459-67. 2009..The carbonaceous oral adsorbent AST-120 slows the deterioration of kidney function in patients with advanced chronic kidney disease (CKD). However, information about AST-120 in patients with less severe stages of CKD is lacking...
Perspectives for gene therapy in renal diseasesEnyu Imai
Division of Nephrology, Department of Internal Medicine, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871
Intern Med 43:85-96. 2004..We believe that the future of gene therapy research is exciting and promising and it holds an enormous potential for clinical application...
Apoptosis induced by hypertonicity in Madin Darley canine kidney cells: protective effect of betaineM Horio
School of Allied Health Sciences, Department of Internal Medicine and Therapeutics and. Faculty of Health and Sport Science, Osaka University School of Medicine, Suita, Osaka, Japan
Nephrol Dial Transplant 16:483-90. 2001....
A case of Guillain-Barré syndrome developed minimal change nephrotic syndrome simultaneouslyH Kitamura
First Department of Medicine, Osaka University School of Medicine, Japan
Am J Nephrol 18:151-4. 1998..To our knowledge, this is the first report of a case beneficially treated with glucocorticoids, suggesting that immune disorder may play an important role in the association between MCNS and GBS...
Gene therapy for kidney diseaseE Imai
Division of Nephrology, Department of Internal Medicine and Therapeutics, Graduate School of Medicine, Osaka University, Japan
Expert Opin Investig Drugs 9:1029-39. 2000..We review emerging strategies of gene transfer with reference to the kidney and discuss the potential application of gene therapy to renal diseases...
Exercise-induced acute kidney injury with reversible posterior leukoencephalopathy syndromeTomonori Kimura
Department of Geriatric Medicine and Nephrology, Osaka University School of Medicine, Suita, Osaka 585 0871, Japan
Clin Exp Nephrol 14:173-5. 2010..This is the first reported case of exercise-induced AKI associated with RPLS. Vasoconstriction and endothelial dysfunction are considered as the common etiology of these diseases...
Prospective randomized study evaluating the efficacy of the spherical adsorptive carbon AST-120 in chronic kidney disease patients with moderate decrease in renal functionTatsuya Shoji
Department of Nephrology, Osaka General Medical Center, Osaka, Japan
Nephron Clin Pract 105:c99-107. 2007..We studied whether adding the spherical adsorptive carbon AST-120 to conventional treatments is effective in inhibiting progression of chronic kidney disease (CKD) at the stage of moderate decrease in renal function...
Electroporation-mediated gene therapyYoshitaka Isaka
Osaka University Graduate School of Medicine, Divisions of Advanced Technology for Transplantation and Nephrology, Suita, Osaka 565 0871, Japan
Expert Opin Drug Deliv 4:561-71. 2007..Based on the accumulation of positive results, the first clinical study for the treatment of malignant melanoma is now underway, and preclinical studies have suggested that electroporation is useful as a gene therapy protocol...
Fetuin-mineral complex reflects extraosseous calcification stress in CKDTakayuki Hamano
Department of Geriatric Medicine and Nephrology, Osaka University Graduate School of Medicine, 2 2 Yamadaoka, Suita, Osaka 565 0871, Japan
J Am Soc Nephrol 21:1998-2007. 2010..These data suggest that a quantitative measure of FMC, not supernatant or serum fetuin-A as measured in previous studies, reflects extraosseous calcification stress...
Specialist care and improved long-term survival of dialysis patientsYoshiyuki Furumatsu
Department of Geriatric Medicine and Nephrology, Osaka University Graduate School of Medicine, Osaka, Japan
Nephrol Dial Transplant 25:1930-5. 2010..We sought to determine whether specialist care can actually be associated with better survival rates in a nationwide Japanese dialysis cohort...
Kidney repair using stem cells: myth or reality as a therapeutic option?Hirotsugu Iwatani
Department of Nephrology, Osaka University Graduate School of Medicine, Suita, Osaka Japan
J Nephrol 23:143-6. 2010..The origin, localization and role of kidney stem cells are under investigation. We also discuss potential applications of embryonic stem cells and induced pluripotent stem cells in kidney regeneration...
Modification of the CKD epidemiology collaboration (CKD-EPI) equation for Japanese: accuracy and use for population estimatesMasaru Horio
Department of Functional Diagnostic Science, Osaka University Graduate School of Medicine, Osaka, Japan
Am J Kidney Dis 56:32-8. 2010..We modified the CKD-EPI equation for use in Japan, compared its accuracy with the Japanese modification of the MDRD Study equation, and compared the prevalence of CKD in Japan using both equations...
A challenge to chronic kidney disease in Asia: The report of the second Asian Forum of Chronic Kidney Disease InitiativeYusuke Tsukamoto
Department of Nephrology, Shuwa General Hospital, Saitama, Japan
Nephrology (Carlton) 15:248-52. 2010....
The CXCL12 (SDF-1)/CXCR4 axis is essential for the development of renal vasculatureYoshitsugu Takabatake
Department of Geriatric Medicine and Nephrology, Osaka University Graduate School of Medicine B6, Suita, Japan
J Am Soc Nephrol 20:1714-23. 2009..We conclude that CXCL12 secreted from stromal cells or podocytes acts on endothelial cells to regulate vascular development in the kidney. These findings suggest new potential therapeutic targets for remodeling the injured kidney...
Usefulness of bone resorption markers in hemodialysis patientsTakayuki Hamano
Department of Geriatric Medicine and Nephrology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
Bone 45:S19-25. 2009..Taken together, both markers give us additional information that cannot be obtained just by using PTH, provided that we know the characteristics of these markers...
Simple sampling strategy for measuring inulin renal clearanceMasaru Horio
Department of Functional Diagnostic Science, Course of Health Science, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
Clin Exp Nephrol 13:50-4. 2009..The aim of this study was to evaluate the validity of inulin renal clearance with assumed single urine collection with a period such as 30, 60 or 90 minutes...
Current status of estimated glomerular filtration rate (eGFR) equations for Asians and an approach to create a common eGFR equationSeiichi Matsuo
Department of Nephrology, Nagoya University Hospital, Nagoya University Graduate School of Medicine, Nagoya, Japan
Nephrology (Carlton) 15:45-8. 2010..These include ethnicity, reference method to measure GFR, method of creatinine measurement and calibration. Towards the future, Asian collaborative study is necessary to validate and standardize eGFR equations...
Chronic kidney disease in AsiaEnyu Imai
Department of Nephrology, Osaka University Graduate School of Medicine, Suita, 565-0871 Osaka, Japan
Lancet 371:2147-8. 2008
Comparison of a simple and a standard method for inulin renal clearanceMasaru Horio
Department of Functional Diagnostic Science, Osaka University Graduate School of Medicine, Suita, Osaka, 565 0871, Japan
Clin Exp Nephrol 14:427-30. 2010..The standard method of renal inulin clearance consists of three sets of 30-min clearances. We previously proposed a simple method with a single urine collection for 1 h and two blood samples. In this study, we compared the two methods...
Chronic deteriorating renal function and renal fibrosisYoshitaka Isaka
Department of Advanced Technology for Transplantation, Osaka University Graduate School of Medicine, Suita, Japan
Contrib Nephrol 159:109-21. 2008..The sustained expression of these cytokines underlies the development of renal fibrosis. Understanding the molecular mechanisms of the cytokines and their signaling could lead to the application of clinically useful gene therapy...
Hepatocyte growth factor gene therapy for hypertensionKazuo Komamura
Department of Cardiovascular Dynamics, Research Institute, National Cardiovascular Center, Suita, Japan
Methods Mol Biol 423:393-404. 2008..We outline the technique of intramuscular electroporation of HGF gene as a remedy for hypertension...
Utility of the Japanese GFR estimation equation for evaluating potential donor kidney functionYoichi Kakuta
Department of Specific Organ Regulation Urology, Osaka University Graduate School of Medicine, Osaka, Japan
Clin Exp Nephrol 14:63-7. 2010..This study compared the accuracy of eGFR and creatinine clearance (Ccr) values with that of inulin clearance (Cin) for assessing renal function in kidney donors...
CCAAT/Enhancer-binding protein delta contributes to myofibroblast transdifferentiation and renal disease progressionMasanobu Takeji
Department of Internal Medicine and Therapeutics, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
J Am Soc Nephrol 15:2383-90. 2004..These data suggest an important role for C/EBPdelta in myofibroblast transdifferentiation and glomerulonephritis exacerbation...
Direct transfer of hepatocyte growth factor gene into kidney suppresses cyclosporin A nephrotoxicity in ratsKoji Yazawa
Department of Internal Medicine and Therapeutics, Osaka University Graduate School of Medicine, Suita 565 0871, Japan
Nephrol Dial Transplant 19:812-6. 2004..Here, we investigated protective effects of HGF gene therapy on CsA-induced nephrotoxicity by using an electroporation-mediated gene transfer method...
DNAzyme for TGF-beta suppressed extracellular matrix accumulation in experimental glomerulonephritisYoshitaka Isaka
Department of Internal Medicine and Therapeutics, Osaka University Graduate School of Medicine, Osaka, Japan
Kidney Int 66:586-90. 2004..Recently, a new generation of catalytic nucleic acid composed of DNA, named DNA enzyme (DNAzyme), has been developed...
Role of myofibroblasts in progressive renal diseasesToshiki Moriyama
Department of Health Science II, School of Health and Sport Sciences, Osaka University, Toyonaka, Osaka, Japan
Contrib Nephrol 139:120-40. 2003
Induction of glia maturation factor-beta in proximal tubular cells leads to vulnerability to oxidative injury through the p38 pathway and changes in antioxidant enzyme activitiesJun Ya Kaimori
Department of Internal Medicine and Therapeutics, Osaka University Graduate School of Medicine, Osaka 565 0871, Japan
J Biol Chem 278:33519-27. 2003..In conclusion, we suggest that the proteinuria induction of GMF-beta in renal PT cells may play a critical role in the progression of renal diseases by enhancing oxidative injuries...
Gene electrotransfer: potential for gene therapy of renal diseasesEnyu Imai
Department of Internal Medicine and Therapeutics, Division of Nephrology, Osaka University Graduate School of Medicine, Osaka, Japan
Kidney Int 61:S37-41. 2002..We review on an emerging strategy of gene electrotransfer and discuss the potential application of gene therapy to renal diseases...
Effects of the oral adsorbent AST-120 on tryptophan metabolism in uremic patientsYoshiharu Tsubakihara
Department of Nephrology, Osaka Prefectural General Hospital, 3 1 56 Bandaihigashi, Sumiyoshi ku, Osaka 558 8558, Japan
Am J Kidney Dis 41:S38-41. 2003..We therefore investigated whether AST-120 recovers TRP binding to plasma proteins and improves the nutritional state of uremic patients...
Nilvadipine attenuates mesangial expansion and glomerular hypertrophy in diabetic db/db mice, a model for type 2 diabetesToshiki Moriyama
Second Department of Medical Science, School of Health and Sport Sciences, Osaka University, 1 17 Machikaneyama cho, Toyonaka, Osaka 560 0043, Japan
Clin Exp Nephrol 8:230-6. 2004..In contrast, the therapeutic efficacy of calcium channel blockers (CCBs) in the treatment of diabetic nephropathy still remains controversial...
Different routes bridging calcium in Japanese hemodialysis patientsTakayuki Hamano
Department of Internal Medicine and Therapeutics, Osaka University School of Medicine, Suita, Osaka 565-0871, Japan
Ther Apher Dial 9:32-8. 2005..5 mEq/L dialysate. As the new K/DOQI guidelines are released, it is time to discuss the appropriate D-Ca as well as doses and kinds of phosphate binders and vitamin D for the comprehensive management of Japanese hemodialysis patients...
Pharmacokinetics and lipid-lowering effect of fluvastatin in hypercholesterolaemic patients on maintenance haemodialysisN Ichimaru
Department of Urology, Osaka University Graduate School of Medicine, Osaka, Japan
J Int Med Res 32:45-52. 2004..The therapeutic efficacy and safety of fluvastatin were demonstrated in this patient group. Furthermore, fluvastatin is not influenced by the dialysis membrane and does not accumulate in haemodialysis patients with hyperlipidaemia...
Hemodialysis-associated hypotension as an independent risk factor for two-year mortality in hemodialysis patientsTatsuya Shoji
Department of Nephrology, Osaka General Medical Center, Osaka, Japan
Kidney Int 66:1212-20. 2004..We conducted a multicenter prospective cohort study to evaluate the impact of hemodialysis-associated hypotension on mortality...
Serum osteoprotegerin as a screening tool for coronary artery calcification score in diabetic pre-dialysis patientsSatoshi Mikami
Department of Nephrology, Osaka University Graduate School of Medicine, Suita, Japan
Hypertens Res 31:1163-70. 2008..Serum OPG was positively associated with high CACS and can be a useful screening tool for severe coronary calcification, whereas no association between fetuin-A and CACS was found...
Gene expression profile of renal proximal tubules regulated by proteinuriaHideaki Nakajima
Department of Internal Medicine and Therapeutics, Osaka University Graduate School of Medicine, School of Allied Health Sciences, and Institute for Molecular and Cellular Biology, Osaka University, Osaka, Japan
Kidney Int 61:1577-87. 2002..Thus, identification of genes related to proteinuria should provide insights into the pathological process of tubulointerstitial fibrosis...
Hematopoietic and nonhematopoietic potentials of Hoechst(low)/side population cells isolated from adult rat kidneyHirotsugu Iwatani
Department of Internal Medicine and Therapeutics, Osaka University School of Medicine, Suita, Osaka, Japan
Kidney Int 65:1604-14. 2004..CONCLUSION: These findings implicate that Hoechst(low) cells in the kidney may have potentials for hematopoietic and nonhematopoietic lineages, but are not stem cells for renal cells, especially mesangial and tubular cells...
Risedronate, an effective treatment for glucocorticoid-induced bone loss in CKD patients with or without concomitant active vitamin D (PRIUS-CKD)Naohiko Fujii
FASN Department of Internal Medicine, Osaka University School of Medicine, Box A8, 2 2 Yamada oka, Suita 565 0871, Japan
Nephrol Dial Transplant 22:1601-7. 2007....
Targeting of interstitial cells using a simple gene-transfer strategyNaohiko Fujii
Department of Advanced Technology for Transplantation, Osaka University Graduate School of Medicine, Suita 565-0871, Japan
Nephrol Dial Transplant 21:2745-53. 2006..CONCLUSION: We demonstrated that direct parenchymal injection of DNA combined with electroporation enables gene transfer into interstitial fibroblasts...
cDNA cloning of a cytosolic protein tyrosine phosphatase (RKPTP) from rat kidneyT Moriyama
First Department of Medicine, Osaka University School of Medicine, Japan
FEBS Lett 353:305-8. 1994..The recombinant protein of the cloned cDNA expressed in Escherichia coli was shown to possess PTPase activity using myelin basic protein, tyrosine phosphorylated by p43v-abl tyrosine kinase, as a substrate...
Serum 25-hydroxyvitamin D as an independent determinant of 1-84 PTH and bone mineral density in non-diabetic predialysis CKD patientsKodo Tomida
Department of Geriatric Medicine and Nephrology, Osaka University Graduate School of Medicine, Box B6, 2 2 Yamada oka, Suita, Osaka 565 0871, Japan
Bone 44:678-83. 2009..Since the significant associations for 25(OH)D with 1-84 PTH and BMD were independent of serum calcitriol and bone ALP, this might imply that 25(OH)D has a direct effect on the parathyroid gland and bone...
Intravenous immunoglobulin (IVIg) therapy in MPO-ANCA related polyangiitis with rapidly progressive glomerulonephritis in JapanEri Muso
Division of Nephrology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Osaka, Japan
Jpn J Infect Dis 57:S17-8. 2004..No fatal infection was noted. IVIg might be the potent inducible therapy which can be promoted before the beginning of conventional immunosuppressant treatment for relatively aged and lower immunopotent MPO-ANCA patients in Japan...
Participation of autophagy in renal ischemia/reperfusion injuryChigure Suzuki
Department of Nephrology, Osaka University Graduate School of Medicine, Suita, Japan
Biochem Biophys Res Commun 368:100-6. 2008..Furthermore, inhibition of autophagy significantly inhibited H(2)O(2)-induced cell death. In conclusion, high turnover of autophagy may lead to autophagic cell death during I/R injury...
Fetal cells in mother rats contribute to the remodeling of liver and kidney after injuryYu Wang
Department of Internal Medicine and Therapeutics, Osaka University School of Medicine, Suita, Osaka, Japan
Biochem Biophys Res Commun 325:961-7. 2004..These results indicate that fetal cells are engrafted to maternal hematopoietic system without apparent injury and they also contribute to the repairing process of maternal liver and kidney...
Antisense oligonucleotides against thrombospondin-1 inhibit activation of tgf-beta in fibrotic renal disease in the rat in vivoChristoph Daniel
Division of Nephrology, Universitat Erlangen Nurnberg, Loschgestrasse 8, 91054 Erlangen, Germany
Am J Pathol 163:1185-92. 2003..These results demonstrate that TSP1 is the major endogenous activator of TGF-beta in experimental inflammatory kidney disease...
[RNAi gene therapy for kidney disease]Yoshitaka Isaka
Department of Advanced Technology for Transplantation, Osaka University Graduate School of Medicine
Nippon Rinsho 64:659-61. 2006
[New kidney function tests]Enyu Imai
Nippon Naika Gakkai Zasshi 96:881-6. 2007
Gene therapy for renal diseases: its potential and limitationEnyu Imai
J Am Soc Nephrol 14:1102-4. 2003
