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Nishio H, Ishii A, Yamada H, Mori KP, Kato Y, Ohno S, Handa T, Sugioka S, Ishimura T, Ikushima A, Inoue Y, Minamino N, Mukoyama M, Yanagita M, Yokoi H. Sacubitril/valsartan ameliorates renal tubulointerstitial injury through increasing renal plasma flow in a mouse model of type 2 diabetes with aldosterone excess. Nephrol Dial Transplant 2023; 38:2517-2527. [PMID: 37202215 DOI: 10.1093/ndt/gfad098] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Indexed: 05/20/2023] Open
Abstract
BACKGROUND Aldosterone has been assumed to be one of aggravating factors in diabetic kidney disease (DKD). Natriuretic peptides/guanylyl cyclase-A/cGMP signalling has been shown to ameliorate aldosterone-induced renal injury in mice. Sacubitril/valsartan (SAC/VAL) is used clinically for chronic heart failure and hypertension, in part by augmenting natriuretic peptide bioavailability. The effects of SAC/VAL on renal pathophysiology including in DKD, however, have remained unclarified. METHODS Eight-week-old male db/db mice fed on a high-salt diet (HSD) were treated with vehicle or aldosterone (0.2 μg/kg/min), and divided into four groups: HSD control, ALDO (aldosterone), ALDO + VAL (valsartan), and ALDO + SAC/VAL group. After 4 weeks, they were analysed for plasma atrial natriuretic peptide (ANP) levels, renal histology, and haemodynamic parameters including glomerular filtration rate (GFR) by FITC-inulin and renal plasma flow (RPF) by para-amino hippuric acid. RESULTS The ALDO + SAC/VAL group showed significantly increased plasma ANP concentration and creatinine clearance, and decreased tubulointerstitial fibrosis and neutrophil gelatinase-associated lipocalin expression compared to ALDO and ALDO + VAL groups. SAC/VAL treatment increased GFR and RPF, and suppressed expression of Tgfb1, Il1b, Ccl2, and Lcn2 genes compared to the ALDO group. The percentage of tubulointerstitial fibrotic areas negatively correlated with the RPF and GFR. CONCLUSION In a mouse model of type 2 diabetes with aldosterone excess, SAC/VAL increased RPF and GFR, and ameliorated tubulointerstitial fibrosis. Furthermore, RPF negatively correlated well with tubulointerstitial injury, suggesting that the beneficial effects of SAC/VAL could be through increased renal plasma flow with enhanced natriuretic peptide bioavailability.
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Affiliation(s)
- Haruomi Nishio
- Department of Nephrology, Graduate School of Medicine, Kyoto University, Kyoto, Kyoto, Japan
| | - Akira Ishii
- Department of Nephrology, Graduate School of Medicine, Kyoto University, Kyoto, Kyoto, Japan
| | - Hiroyuki Yamada
- Department of Nephrology, Graduate School of Medicine, Kyoto University, Kyoto, Kyoto, Japan
- Department of Primary Care and Emergency Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Kyoto, Japan
| | - Keita P Mori
- Department of Nephrology, Graduate School of Medicine, Kyoto University, Kyoto, Kyoto, Japan
- Department of Nephrology and Dialysis, Medical Research Institute KITANO HOSPITAL, PIIF Tazuke-Kofukai, Osaka, Osaka, Japan
| | - Yukiko Kato
- Department of Nephrology, Graduate School of Medicine, Kyoto University, Kyoto, Kyoto, Japan
| | - Shoko Ohno
- Department of Nephrology, Graduate School of Medicine, Kyoto University, Kyoto, Kyoto, Japan
| | - Takaya Handa
- Department of Nephrology, Graduate School of Medicine, Kyoto University, Kyoto, Kyoto, Japan
| | - Sayaka Sugioka
- Department of Nephrology, Graduate School of Medicine, Kyoto University, Kyoto, Kyoto, Japan
| | - Takuya Ishimura
- Department of Nephrology, Graduate School of Medicine, Kyoto University, Kyoto, Kyoto, Japan
| | - Akie Ikushima
- Department of Nephrology, Graduate School of Medicine, Kyoto University, Kyoto, Kyoto, Japan
| | - Yui Inoue
- Department of Nephrology, Graduate School of Medicine, Kyoto University, Kyoto, Kyoto, Japan
| | - Naoto Minamino
- Department of Biochemistry, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka, Japan
| | - Masashi Mukoyama
- Department of Nephrology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Kumamoto, Japan
| | - Motoko Yanagita
- Department of Nephrology, Graduate School of Medicine, Kyoto University, Kyoto, Kyoto, Japan
- Institute for the Advanced Study of Human Biology (ASHBi), Kyoto University, Kyoto, Kyoto, Japan
| | - Hideki Yokoi
- Department of Nephrology, Graduate School of Medicine, Kyoto University, Kyoto, Kyoto, Japan
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Mitsides N, Mitra V, Saha A, Harris S, Kalra PA, Mitra S. Urinary Liver-Type Fatty Acid Binding Protein, a Biomarker for Disease Progression, Dialysis and Overall Mortality in Chronic Kidney Disease. J Pers Med 2023; 13:1481. [PMID: 37888092 PMCID: PMC10608048 DOI: 10.3390/jpm13101481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 10/01/2023] [Accepted: 10/08/2023] [Indexed: 10/28/2023] Open
Abstract
Chronic kidney disease (CKD) is a major public health concern with an increasing proportion of sufferers progressing to renal replacement therapy (RRT). Early identification of those at risk of disease progression could be key in improving outcomes. We hypothesise that urinary liver-type fatty acid binding protein (uL-FABP) may be a suitable biomarker for CKD progression and can add value to currently established biomarkers such as the urinary protein-to-creatinine ratio (uPCR). A total of 583 participants with CKD 1-5 (not receiving renal replacement therapy) entered a 2 yr prospective longitudinal study. UPCR and uL-FABP were measured at baseline and CKD progression was defined as either (i) a decline in eGFR of >5 mL/min/1.73 m2 or an increase in serum creatinine by 10% at 1 yr; (ii) a decline in eGFR of >6 mL/min/1.73 m2 or an increase in serum creatinine by 20% at 2 yrs; or (iii) the initiation of RRT. A combined outcome of initiating RRT or death was also included. Approximately 40% of participants showed CKD progression. uL-FABP predicted CKD progression at both years 1 and 2 (OR 1.01, p < 0.01). Sensitivity and specificity were comparable to those of uPCR (AUC 0.623 v 0.706) and heat map analysis suggested that uL-FABP in the absence of significant proteinuria can predict an increase in serum creatinine of 10% at 1 yr and 20% at 2 yrs. The risk of the combined outcome of initiating RRT or death was 23% higher in those with high uL-FABP (p < 0.01) independent of uPCR. uL-FABP appears to be a highly sensitive and specific biomarker of CKD progression. The use of this biomarker could enhance the risk stratification of CKD and its progression and should be assessed further.
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Affiliation(s)
- Nicos Mitsides
- Medical School, University of Cyprus, 2029 Nicosia, Cyprus
- Department of Nephrology, Nicosia General Hospital, 2029 Nicosia, Cyprus
| | - Vikram Mitra
- John Radcliffe Hospital, Oxford University Medical School, Headington, University of Oxford, Oxford OX1 2JD, UK;
| | - Ananya Saha
- Manchester Institute of Nephrology and Transplantation, Department of Research and Innovation, Manchester University Hospitals, Manchester M13 9WL, UK; (A.S.); (S.H.)
| | - Shelly Harris
- Manchester Institute of Nephrology and Transplantation, Department of Research and Innovation, Manchester University Hospitals, Manchester M13 9WL, UK; (A.S.); (S.H.)
| | - Philip A. Kalra
- Department of Renal Medicine, Salford Royal Hospital, Northern Care Alliance NHS Foundation Trust, Manchester Academic Health Sciences Centre, Salford M6 8HD, UK;
| | - Sandip Mitra
- Manchester Institute of Nephrology and Transplantation, Manchester University Hospitals & University of Manchester, Manchester Academic Health Sciences Centre, Manchester M13 9WL, UK
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3
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Takashima S, Nagamori Y, Ohata K, Oikawa T, Sugaya T, Kobatake Y, Nishii N. Clinical evaluation of urinary liver-type fatty acid-binding protein for the diagnosis of renal diseases in dogs. J Vet Med Sci 2021; 83:1465-1471. [PMID: 34526412 PMCID: PMC8498833 DOI: 10.1292/jvms.20-0698] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Liver-type fatty acid-binding protein (L-FABP) is a biomarker for the early detection of renal diseases in humans. L-FABP is a cytotoxic oxidation product secreted from the proximal tubules
under ischemic and oxidative stress conditions. First, L-FABP gene expression in the kidney and liver was evaluated. Next, the urinary L-FABP concentrations in dogs with or without renal
diseases were measured using a novel enzyme-linked immunosorbent assay kit. Urinary L-FABP was normalized relative to urinary creatinine (uCre) concentrations (µg/g uCre). Finally, the
relationships between urinary L-FABP and renal biomarkers used in canine medicine or serum alanine transaminase (ALT) as an indicator of liver damage were examined. Serum and urine samples
from 94 client-owned dogs including 23 dogs with renal diseases and 71 dogs without renal diseases were used for analysis. Relative L-FABP gene expression was confirmed both in the liver and
kidney. Dogs with renal diseases had a significantly higher urinary L-FABP than those without, and its predictive cutoff value was 26 µg/g uCre. Urinary L-FABP was significantly correlated
with serum creatinine (r=0.4674, P<0.01), urea nitrogen (r=0.4907, P<0.01), urine specific gravity
(r=−0.5100, P<0.01), and urine protein/creatinine ratio (r=0.7216, P<0.01), but not with serum ALT. Hence, dogs
with a high urinary L-FABP value were more likely to have renal diseases.
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Affiliation(s)
- Satoshi Takashima
- Joint Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, Gifu 501-1193, Japan
| | - Yumiko Nagamori
- Joint Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, Gifu 501-1193, Japan
| | - Keiichi Ohata
- CMIC Holdings Co., Ltd., Tokyo 113-0034, Japan.,Division of Nephrology and Hypertension, Department of Internal Medicine, St. Marianna University School of Medicine, Kanagawa 216-8511, Japan
| | | | - Takeshi Sugaya
- Division of Nephrology and Hypertension, Department of Internal Medicine, St. Marianna University School of Medicine, Kanagawa 216-8511, Japan
| | - Yui Kobatake
- Joint Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, Gifu 501-1193, Japan
| | - Naohito Nishii
- Joint Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, Gifu 501-1193, Japan
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Tajima S, Fu R, Shigematsu T, Noguchi H, Kaku K, Tsuchimoto A, Okabe Y, Masuda S. Urinary Human Epididymis Secretory Protein 4 as a Useful Biomarker for Subclinical Acute Rejection Three Months after Kidney Transplantation. Int J Mol Sci 2019; 20:ijms20194699. [PMID: 31546745 PMCID: PMC6801851 DOI: 10.3390/ijms20194699] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 09/20/2019] [Accepted: 09/20/2019] [Indexed: 02/07/2023] Open
Abstract
Kidney transplantation is the treatment of choice for patients with advanced chronic kidney disease (CKD) and end stage renal disease (ESRD). However, acute rejection (AR) is a common complication in kidney transplantation and is associated with reduced graft survival. Current diagnosis of AR relies mainly on clinical monitoring including serum creatinine, proteinuria, and confirmation by histopathologic assessment in the biopsy specimen of graft kidney. Although an early protocol biopsy is indispensable for depicting the severity of pathologic lesions in subclinical acute rejection (subAR), it is not acceptable in some cases and cannot be performed because of its invasive nature. Therefore, we examined the detection of noninvasive biomarkers that are closely related to the pathology of subAR in protocol biopsies three months after kidney transplantation. In this study, the urinary level of microtubule-associated protein 1 light chain 3 (LC3), monocyte chemotactic protein-1 (MCP-1), liver-type fatty acid-binding protein (L-FABP), neutrophil gelatinase-associated lipocalin (NGAL), and human epididymis secretory protein 4 (HE4) were measured three months after kidney transplantation. Urine samples of 80 patients undergoing kidney transplantation between August 2014 to September 2016, were prospectively collected after three months. SubAR was observed in 11 patients (13.8%) in protocol biopsy. The urinary levels of LC3, MCP-1, NGAL, and HE4 were significantly higher in patients with subAR than in those without, while those of L-FABP did not differ between the two groups. Multivariate regression models, receiver-operating characteristics (ROC), and areas under ROC curves (AUC) were used to identify predicted values of subAR. Urinary HE4 levels were able to better identify subAR (AUC = 0.808) than the other four urinary biomarkers. In conclusion, urinary HE4 is increased in kidney transplant recipients of subAR three months after kidney transplantation, suggesting that HE4 has the potential to be used as a novel clinical biomarker for predicting subAR.
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Affiliation(s)
- Soichiro Tajima
- Department of Pharmacy, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
| | - Rao Fu
- Department of Clinical Pharmacology and Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
| | - Tomohiro Shigematsu
- Department of Pharmacy, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
- Department of Clinical Pharmacology and Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
| | - Hiroshi Noguchi
- Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
| | - Keizo Kaku
- Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
| | - Akihiro Tsuchimoto
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
| | - Yasuhiro Okabe
- Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
| | - Satohiro Masuda
- Department of Pharmacy, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
- Department of Clinical Pharmacology and Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
- Department of Pharmacy, International University of Health and Welfare Narita Hospital, Minami-Aoyama, Minato-ku, Tokyo 107-0062, Japan.
- Department of Clinical Pharmacy, Faculty of Pharmaceutical Sciences, International University of Health and Welfare Narita Hospital, Minami-Aoyama, Minato-ku, Tokyo 107-0062, Japan.
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5
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Kosaki K, Sugaya T, Ohata K, Tanabe J, Hoshino S, Inoue K, Kimura K, Maeda S, Shibagaki Y, Kamijo-Ikemori A. Renoprotective effects of voluntary running exercise training on aldosterone-induced renal injury in human L-FABP chromosomal transgenic mice. Hypertens Res 2019; 42:1518-1527. [DOI: 10.1038/s41440-019-0273-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 04/08/2019] [Accepted: 04/30/2019] [Indexed: 12/11/2022]
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6
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Ichikawa D, Kamijo-Ikemori A, Sugaya T, Ohata K, Hisamichi M, Hoshino S, Kimura K, Shibagaki Y. Utility of urinary tubular markers for monitoring chronic tubulointerstitial injury after ischemia-reperfusion. Nephrology (Carlton) 2018; 23:308-316. [PMID: 28063188 DOI: 10.1111/nep.12998] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 01/03/2017] [Accepted: 01/04/2017] [Indexed: 12/29/2022]
Abstract
AIM The aim of this study was to elucidate whether urinary tubular markers during the chronic phase of acute kidney injury (AKI) are associated with chronic tubulointerstitial damage. METHODS Male human L-type fatty acid binding protein (L-FABP) chromosomal transgenic (Tg) mice underwent ischaemic reperfusion (I/R) injury via renal pedicle clamping for either 10 min or 20 min. Contralateral nephrectomy was performed at the time of tissue reperfusion. The kidneys were analyzed 20 days after the last I/R. RESULTS Serum creatinine levels 20 days post-I/R were significantly higher in the 20 min I/R than in the 10 min I/R and control groups and were similar between the 10 min I/R and control groups. The degree of tubulointerstitial damage 20 days post-I/R was significantly more severe in the 20 min I/R than in the 10 min I/R and control groups, as well as in the 10 min I/R than in the control group. Urinary levels of human L-FABP, albumin, and kidney injury molecule-1 (KIM-1) 20 days post-I/R were significantly higher in the 20 min I/R than in the control group, whereas urinary L-FABP was significantly higher in the 10 min I/R than in the control group. Conversely, urinary neutrophil gelatinase-associated lipocalin levels did not significantly differ between the three groups. Finally, the urinary levels of human L-FABP, albumin, and KIM-1 levels 20 days post-I/R were significantly correlated with the degree of renal damage. CONCLUSIONS Urinary levels of human L-FABP, albumin and, KIM-1 may be useful for monitoring AKI-to-CKD transition in clinical practice.
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Affiliation(s)
- Daisuke Ichikawa
- Division of Nephrology and Hypertension, Department of Internal Medicine, St. Marianna University School of Medicine, Kanagawa, Japan
| | - Atsuko Kamijo-Ikemori
- Division of Nephrology and Hypertension, Department of Internal Medicine, St. Marianna University School of Medicine, Kanagawa, Japan.,Department of Anatomy, St. Marianna University School of Medicine, Kanagawa, Japan
| | - Takeshi Sugaya
- Division of Nephrology and Hypertension, Department of Internal Medicine, St. Marianna University School of Medicine, Kanagawa, Japan
| | - Keiichi Ohata
- Division of Nephrology and Hypertension, Department of Internal Medicine, St. Marianna University School of Medicine, Kanagawa, Japan
| | - Mikako Hisamichi
- Division of Nephrology and Hypertension, Department of Internal Medicine, St. Marianna University School of Medicine, Kanagawa, Japan
| | - Seiko Hoshino
- Department of Anatomy, St. Marianna University School of Medicine, Kanagawa, Japan
| | | | - Yugo Shibagaki
- Division of Nephrology and Hypertension, Department of Internal Medicine, St. Marianna University School of Medicine, Kanagawa, Japan
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Hisamichi M, Kamijo-Ikemori A, Sugaya T, Hoshino S, Kimura K, Shibagaki Y. Role of bardoxolone methyl, a nuclear factor erythroid 2-related factor 2 activator, in aldosterone- and salt-induced renal injury. Hypertens Res 2017; 41:8-17. [PMID: 28978980 DOI: 10.1038/hr.2017.83] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 07/06/2017] [Accepted: 07/31/2017] [Indexed: 01/09/2023]
Abstract
The aim of this study was to investigate the renoprotective effect of bardoxolone methyl (BM), a nuclear factor erythroid 2-related factor 2 (Nrf2) activator with an antioxidant effect, in a salt-sensitive hypertension model induced by aldosterone (Ald) and salt. Tubulointerstitial damage with urinary liver-type fatty acid-binding protein (L-FABP) was evaluated using human L-FABP chromosomal transgenic (L-FABP+/-) male mice. The mice in the Ald group (n=7) received systemic Ald infusions via an osmotic minipump and were given 1% NaCl water for 35 days. Those in the Ald-BM group (n=8) were administered BM intraperitoneally in addition to an injection of Ald and salt. The dose of BM was gradually increased every 7 days up to 10 mg kg-1 per day, which was maintained for 14 days. The administration of BM significantly increased renal expression of the Nrf2 target antioxidant gene. Tubulointerstitial damage was significantly ameliorated in the Ald-BM group compared to the Ald group. The increase in reactive oxygen species (ROS) and upregulation of angiotensinogen expression in the kidneys of the Ald group was significantly prevented in the Ald-BM group. The upregulation of human L-FABP expression induced in the kidneys and increase in urinary L-FABP in the Ald group were significantly suppressed by BM administration. In conclusion, BM ameliorated tubulointerstitial damage in the Ald- and salt-induced hypertension model through suppression of both ROS production and intrarenal renin-angiotensin system activation. Urinary L-FABP may be a useful marker reflecting the therapeutic efficacy of BM.
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Affiliation(s)
| | - Atsuko Kamijo-Ikemori
- Department of Anatomy, Kanagawa, Japan.,Department of Anatomy, St. Marianna University School of Medicine, Kanagawa, Japan
| | | | - Seiko Hoshino
- Department of Anatomy, St. Marianna University School of Medicine, Kanagawa, Japan
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8
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Ohata K, Kamijo-Ikemori A, Sugaya T, Hibi C, Nakamura T, Murase T, Oikawa T, Hoshino S, Katayama K, Asano J, Kimura K, Shibagaki Y. Renoprotective effect of the xanthine oxidoreductase inhibitor Topiroxostat under decreased angiotensin II type 1 a receptor expression. Eur J Pharmacol 2017; 815:88-97. [PMID: 28888756 DOI: 10.1016/j.ejphar.2017.09.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Revised: 09/02/2017] [Accepted: 09/04/2017] [Indexed: 01/13/2023]
Abstract
The aim of this study was to confirm the renoprotective effect of xanthine oxidoreductase (XOR) inhibitor, topiroxostat, compared with another XOR inhibitor, febuxostat, under decreased angiotensin II type 1a (AT1a) receptor expression in the model of renal injury caused by adenine. To evaluate the degree of tubular damage using urinary liver-type fatty acid-binding protein (L-FABP) under decreased AT1a expression, we used AT1a receptor knockdown hetero and human L-FABP chromosomal transgenic (Tg) mice (AT1a+/-L-FABP+/-). Male AT1a+/-L-FABP+/- mice were divided into two groups: the adenine diet group (n = 40) was given a diet containing only 0.2% w/w adenine, and the normal diet group (n = 5) was given a normal diet. When renal dysfunction was confirmed in the adenine diet group 4 weeks after starting the diet, the adenine diet group was further divided into five groups. The adenine diet group (n = 8) was continuously given only the adenine diet. Each group receiving high-dose (3mg/kg) or low-dose (1mg/kg) topiroxostat (Topiroxostat-H group, n = 8, Topiroxostat-L group, n = 8) or febuxostat (Febuxostat-H group, n = 8, Febuxostat-L group, n = 8) was given the adenine diet including the drug for another 4 weeks. The levels of renal XOR, renal dysfunction, urinary L-FABP, tubulointerstitial damage, hypoxia, and oxidative stress were decreased or attenuated after treatment with topiroxostat or febuxostat compared with the adenine diet group. Furthermore, antioxidant capacity was maintained owing to these treatments. In conclusion, topiroxostat and febuxostat attenuated renal damage under decreased AT1a expression in the adenine-induced renal injury model.
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Affiliation(s)
- Keiichi Ohata
- Division of Nephrology and Hypertension, Department of Internal Medicine, St. Marianna University School of Medicine, Kanagawa, Japan; CMIC Holdings Company, Limited, Tokyo, Japan
| | - Atsuko Kamijo-Ikemori
- Division of Nephrology and Hypertension, Department of Internal Medicine, St. Marianna University School of Medicine, Kanagawa, Japan; Department of Anatomy, St. Marianna University School of Medicine, Kanagawa, Japan.
| | - Takeshi Sugaya
- Division of Nephrology and Hypertension, Department of Internal Medicine, St. Marianna University School of Medicine, Kanagawa, Japan; CMIC Holdings Company, Limited, Tokyo, Japan
| | - Chihiro Hibi
- Biopharmaceutical Study Group, Pharmaceutical Research Laboratories, Sanwa Kagaku Kenkyusho Company, Limited, Mie, Japan
| | - Takashi Nakamura
- Biopharmaceutical Study Group, Pharmaceutical Research Laboratories, Sanwa Kagaku Kenkyusho Company, Limited, Mie, Japan
| | - Takayo Murase
- Radioisotope and Chemical Analysis Center, Laboratory Management Department, Sanwa Kagaku Kenkyusho Company, Limited, Mie, Japan
| | | | - Seiko Hoshino
- Department of Anatomy, St. Marianna University School of Medicine, Kanagawa, Japan
| | - Kimie Katayama
- Division of Nephrology and Hypertension, Department of Internal Medicine, St. Marianna University School of Medicine, Kanagawa, Japan
| | - Junko Asano
- Division of Nephrology and Hypertension, Department of Internal Medicine, St. Marianna University School of Medicine, Kanagawa, Japan
| | | | - Yugo Shibagaki
- Division of Nephrology and Hypertension, Department of Internal Medicine, St. Marianna University School of Medicine, Kanagawa, Japan
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9
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Sato E, Kamijo-Ikemori A, Oikawa T, Okuda A, Sugaya T, Kimura K, Nakamura T, Shibagaki Y. Urinary excretion of liver-type fatty acid-binding protein reflects the severity of sepsis. RENAL REPLACEMENT THERAPY 2017. [DOI: 10.1186/s41100-017-0107-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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10
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Kosaki K, Kamijo-Ikemori A, Sugaya T, Tanahashi K, Sawano Y, Akazawa N, Ra SG, Kimura K, Shibagaki Y, Maeda S. Effect of habitual exercise on urinary liver-type fatty acid-binding protein levels in middle-aged and older adults. Scand J Med Sci Sports 2017; 28:152-160. [DOI: 10.1111/sms.12867] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/24/2017] [Indexed: 01/01/2023]
Affiliation(s)
- K. Kosaki
- Graduate School of Comprehensive Human Sciences; University of Tsukuba; Tsukuba Ibaraki Japan
| | - A. Kamijo-Ikemori
- Division of Nephrology and Hypertension; Department of Internal Medicine; St. Marianna University School of Medicine; Kawasaki Kanagawa Japan
- Department of Anatomy; St. Marianna University School of Medicine; Kawasaki Kanagawa Japan
| | - T. Sugaya
- Division of Nephrology and Hypertension; Department of Internal Medicine; St. Marianna University School of Medicine; Kawasaki Kanagawa Japan
- CMIC Company, Limited; Bunkyo Tokyo Japan
| | - K. Tanahashi
- Graduate School of Comprehensive Human Sciences; University of Tsukuba; Tsukuba Ibaraki Japan
| | - Y. Sawano
- Graduate School of Comprehensive Human Sciences; University of Tsukuba; Tsukuba Ibaraki Japan
| | - N. Akazawa
- Faculty of Health and Sport Sciences; University of Tsukuba; Tsukuba Ibaraki Japan
| | - S.-G. Ra
- Faculty of Sports and Health Science; Fukuoka University; Fukuoka Japan
| | - K. Kimura
- JCHO Tokyo Takanawa Hospital; Minato Tokyo Japan
| | - Y. Shibagaki
- Division of Nephrology and Hypertension; Department of Internal Medicine; St. Marianna University School of Medicine; Kawasaki Kanagawa Japan
| | - S. Maeda
- Faculty of Health and Sport Sciences; University of Tsukuba; Tsukuba Ibaraki Japan
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11
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Relationship between exercise capacity and urinary liver-type fatty acid-binding protein in middle-aged and older individuals. Clin Exp Nephrol 2017; 21:810-817. [PMID: 28197733 DOI: 10.1007/s10157-017-1385-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Accepted: 01/19/2017] [Indexed: 12/16/2022]
Abstract
BACKGROUND The underlying mechanism linking the decline in exercise capacity with renal dysfunction remains unclear. Urinary liver-type fatty acid-binding protein (L-FABP) levels reflect the degree of peritubular capillary blood flow, an important factor for renal dysfunction with aging. The aim of this study was to examine the relationship between exercise capacity and urinary L-FABP levels. METHODS This was a cross-sectional study of 187 middle-aged and older individuals (aged 50-83 years) without chronic kidney disease (CKD). We assessed urinary L-FABP levels, peak oxygen consumption ([Formula: see text]), and grip strength. RESULTS Urinary L-FABP levels inversely correlated with both [Formula: see text] (r s = -0.349) and grip strength (r s = -0.485). When the participants were divided into four groups according to the median values of aerobic fitness and muscular strength ([Formula: see text] and grip strength), urinary L-FABP levels were the highest in participants with lower levels of aerobic fitness and muscular strength (2.95 ± 1.43 μg/g creatinine) and the lowest in the participants with higher levels of aerobic fitness and muscular strength (1.33 ± 0.76 μg/g creatinine). The difference between the two groups was significant (P < 0.001). CONCLUSION Our results demonstrate that both [Formula: see text] and grip strength were inversely associated with urinary L-FABP levels in middle-aged and older individuals without CKD. This suggests that a decline in exercise capacity is associated with a reduction in peritubular capillary blood flow, providing a novel insight into the underlying mechanism linking the decline in exercise capacity to the development of renal dysfunction.
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Hisamichi M, Kamijo-Ikemori A, Sugaya T, Ichikawa D, Natsuki T, Hoshino S, Kimura K, Shibagaki Y. Role of angiotensin II type 1a receptor in renal injury induced by deoxycorticosterone acetate-salt hypertension. FASEB J 2016; 31:72-84. [PMID: 27663860 PMCID: PMC5161521 DOI: 10.1096/fj.201600684rr] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Accepted: 09/07/2016] [Indexed: 12/19/2022]
Abstract
The aim of this study was to investigate the in vivo role of angiotensin II type 1a (AT1a) receptor in renal damage as a result of hypertension by using transgenic mice with AT1a receptor gene disruption. Transgenic mice that express human liver-type fatty acid binding protein (L-FABP) with or without disruption of the AT1a receptor gene (L-FABP+/− AT1a−/−, and L-FABP+/− AT1a+/+, respectively) were used with urinary L-FABP as an indicator of tubulointerstitial damage. Those female mice were administered subcutaneously deoxycorticosterone acetate (DOCA)–salt tablets plus drinking water that contained 1% saline for 28 d after uninephrectomy. In L-FABP+/− AT1a+/+ mice that received DOCA-salt treatment, hypertension was induced and slight expansion of glomerular area, glomerular sclerosis, and tubulointerstitial damage were observed. In L-FABP+/− AT1a−/− mice that received DOCA-salt treatment, hypertension was similarly induced and the degree of glomerular damage was significantly more severe than in L-FABP+/− AT1a+/+-DOCA mice. Urinary L-FABP levels were significantly higher in L-FABP+/− AT1a−/−-DOCA mice compared with those in L-FABP+/− AT1a+/+-DOCA mice. Hydralazine treatment significantly attenuated renal damage that was found in L-FABP+/− AT1a−/−-DOCA mice along with a reduction in blood pressure. In summary, activation of the AT1a receptor may contribute to maintenance of the glomerular structure against hypertensive renal damage.—Hisamichi, M., Kamijo-Ikemori, A., Sugaya, T., Ichikawa, D., Natsuki, T., Hoshino, S., Kimura, K., Shibagaki, Y. Role of angiotensin II type 1a receptor in renal injury induced by deoxycorticosterone acetate–salt hypertension.
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Affiliation(s)
- Mikako Hisamichi
- Division of Nephrology and Hypertension, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Atsuko Kamijo-Ikemori
- Division of Nephrology and Hypertension, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan; .,Department of Anatomy, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Takeshi Sugaya
- Division of Nephrology and Hypertension, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Daisuke Ichikawa
- Division of Nephrology and Hypertension, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Takayuki Natsuki
- Institute for Ultrastructural Morphology, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Seiko Hoshino
- Department of Anatomy, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Kenjiro Kimura
- Department of Internal Medicine, Japan Community Health Care Organization, Tokyo Takanawa Hospital, Tokyo, Japan
| | - Yugo Shibagaki
- Division of Nephrology and Hypertension, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
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Okazaki M, Oikawa T, Sugaya T. [The biomarker for CKD: urinary L-FABP - from molecular function to clinical significance]. Nihon Yakurigaku Zasshi 2015; 146:27-32. [PMID: 26165339 DOI: 10.1254/fpj.146.27] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
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