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Matsuoka Y, Fukui M, Hihara M, Mitsui T, Karakawa R, Kakudo N. Ultrastructural changes of vascular smooth muscle cells and resistance to vasospasm treatment in femoral arteries of an arteriosclerotic rat model. Med Mol Morphol 2024; 57:45-58. [PMID: 37993669 DOI: 10.1007/s00795-023-00372-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 10/11/2023] [Indexed: 11/24/2023]
Abstract
The objective of this study was to establish an animal model of arteriosclerosis for assessing vasospasm and to investigate the relationship between arteriosclerosis and vasospasm. Twelve-week-old male Sprague-Dawley rats were fed a diet supplemented with adenine and vitamin D (adenine/vitD). Body weight, blood, and femoral artery histopathology were assessed at 2, 4, and 6 weeks. Change in the femoral artery was examined by transmission electron microscope (TEM). Vasospasm was induced by administering epinephrine extravascularly into the femoral artery and released by the treatment with lidocaine as a vasodilator. During this period, the extravascular diameter and blood flow were measured. The rats in the adenine/vitD group developed renal dysfunction, uremia, hyperphosphatemia, and elevated serum alkaline phosphatase. Histological and TEM analyses of the femoral arteries in the treated rats revealed the degeneration of elastic fibers and extensive calcification of the tunica media and intima. Vascular smooth muscles were degenerated and osteoblasts were developed, resulting in calcified arteriosclerosis. Vasospasm in arteriosclerotic arteries was detected; however, vasodilation as well as an increase in the blood flow was not observed. This study revealed the development of vasospasm in the femoral arteries of the arteriosclerotic rats and, a conventional vasodilator did not release the vasospasm.
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Affiliation(s)
- Yuki Matsuoka
- Department of Plastic and Reconstructive Surgery, Kansai Medical University, 2-5-1, Shin-Machi, Hirakata, Osaka, 573-1010, Japan.
| | - Michika Fukui
- Department of Plastic and Reconstructive Surgery, Kansai Medical University, 2-5-1, Shin-Machi, Hirakata, Osaka, 573-1010, Japan
| | - Masakatsu Hihara
- Department of Plastic and Reconstructive Surgery, Kansai Medical University, 2-5-1, Shin-Machi, Hirakata, Osaka, 573-1010, Japan
| | - Toshihito Mitsui
- Department of Plastic and Reconstructive Surgery, Kansai Medical University, 2-5-1, Shin-Machi, Hirakata, Osaka, 573-1010, Japan
| | - Ryo Karakawa
- Department of Plastic and Reconstructive Surgery, Cancer Institute Hospital of the Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Natsuko Kakudo
- Department of Plastic and Reconstructive Surgery, Kansai Medical University, 2-5-1, Shin-Machi, Hirakata, Osaka, 573-1010, Japan
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2
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Yamamura Y, Sakai N, Iwata Y, Lagares D, Hara A, Kitajima S, Toyama T, Miyagawa T, Ogura H, Sato K, Oshima M, Nakagawa S, Tamai A, Horikoshi K, Matsuno T, Yamamoto N, Hayashi D, Toyota Y, Kaikoi D, Shimizu M, Tager AM, Wada T. Myocardin-related transcription factor contributes to renal fibrosis through the regulation of extracellular microenvironment surrounding fibroblasts. FASEB J 2023; 37:e23005. [PMID: 37289107 DOI: 10.1096/fj.202201870r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 05/08/2023] [Accepted: 05/17/2023] [Indexed: 06/09/2023]
Abstract
Fibroblast accumulation and extracellular matrix (ECM) deposition are common critical steps for the progression of organ fibrosis, but the precise molecular mechanisms remain to be fully investigated. We have previously demonstrated that lysophosphatidic acid contributes to organ fibrosis through the production of connective tissue growth factor (CTGF) via actin cytoskeleton-dependent signaling, myocardin-related transcription factor family (MRTF) consisting of MRTF-A and MRTF-B-serum response factor (SRF) pathway. In this study, we investigated the role of the MRTF-SRF pathway in the development of renal fibrosis, focusing on the regulation of ECM-focal adhesions (FA) in renal fibroblasts. Here we showed that both MRTF-A and -B were required for the expressions of ECM-related molecules such as lysyl oxidase family members, type I procollagen and fibronectin in response to transforming growth factor (TGF)-β1 . TGF-β1 -MRTF-SRF pathway induced the expressions of various components of FA such as integrin α subunits (αv , α2 , α11 ) and β subunits (β1 , β3 , β5 ) as well as integrin-linked kinase (ILK). On the other hand, the blockade of ILK suppressed TGF-β1 -induced MRTF-SRF transcriptional activity, indicating a mutual relationship between MRTF-SRF and FA. Myofibroblast differentiation along with CTGF expression was also dependent on MRTF-SRF and FA components. Finally, global MRTF-A deficient and inducible fibroblast-specific MRTF-B deficient mice (MRTF-AKO BiFBKO mice) are protected from renal fibrosis with adenine administration. Renal expressions of ECM-FA components and CTGF as well as myofibroblast accumulation were suppressed in MRTF-AKO BiFBKO mice. These results suggest that the MRTF-SRF pathway might be a therapeutic target for renal fibrosis through the regulation of components forming ECM-FA in fibroblasts.
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Affiliation(s)
- Yuta Yamamura
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Norihiko Sakai
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
- Division of Blood Purification, Kanazawa University Hospital, Kanazawa, Japan
| | - Yasunori Iwata
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
- Division of Infection Control, Kanazawa University Hospital, Kanazawa, Japan
| | - David Lagares
- Fibrosis Research Center, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
- Center for Immunology and Inflammatory Diseases, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
- Division of Rheumatology, Allergy and Immunology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Akinori Hara
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Shinji Kitajima
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
- Division of Infection Control, Kanazawa University Hospital, Kanazawa, Japan
| | - Tadashi Toyama
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Taro Miyagawa
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Hisayuki Ogura
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Koichi Sato
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Megumi Oshima
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Shiori Nakagawa
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Akira Tamai
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Keisuke Horikoshi
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Takahiro Matsuno
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Naoki Yamamoto
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Daiki Hayashi
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Yoshitada Toyota
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Daichi Kaikoi
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Miho Shimizu
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Andrew M Tager
- Center for Immunology and Inflammatory Diseases, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
- Division of Rheumatology, Allergy and Immunology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Takashi Wada
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
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Uremic Sarcopenia: Clinical Evidence and Basic Experimental Approach. Nutrients 2020; 12:nu12061814. [PMID: 32570738 PMCID: PMC7353433 DOI: 10.3390/nu12061814] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 05/27/2020] [Accepted: 06/16/2020] [Indexed: 12/17/2022] Open
Abstract
Sustained physical activity extends healthy life years while a lower activity due to sarcopenia can reduce them. Sarcopenia is defined as a decrease in skeletal muscle mass and strength due not only to aging, but also from a variety of debilitating chronic illnesses such as cancer and heart failure. Patients with chronic kidney disease (CKD), who tend to be cachexic and in frail health, may develop uremic sarcopenia or uremic myopathy due to an imbalance between muscle protein synthesis and catabolism. Here, we review clinical evidence indicating reduced physical activity as renal function deteriorates and explore evidence-supported therapeutic options focusing on nutrition and physical training. In addition, although sarcopenia is a clinical concept and difficult to recapitulate in basic research, several in vivo approaches have been attempted, such as rodent subtotal nephrectomy representing both renal dysfunction and muscle weakness. This review highlights molecular mechanisms and promising interventions for uremic sarcopenia that were revealed through basic research. Extensive study is still needed to cast light on the many aspects of locomotive organ impairments in CKD and explore the ways that diet and exercise therapies can improve both outcomes and quality of life at every level.
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Wang J, Chai L, Lu Y, Lu H, Liu Y, Zhang Y. Attenuation of mTOR Signaling Is the Major Response Element in the Rescue Pathway of Chronic Kidney Disease in Rats. Neuroimmunomodulation 2020; 27:9-18. [PMID: 32526762 DOI: 10.1159/000505095] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 11/28/2019] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Modern lifestyle changes and the interlinking of non-communicable diseases result in the development of chronic kidney disease (CKD). While research has focused on attenuating the CKD, the role of mTOR in the progression of CKD is still unclear. OBJECTIVES The current investigation was undertaken to study the role of mTOR-mediated signaling in CKD using Wistar male rats and adenine-induced CKD as an experimental model. METHOD The animals were divided into 3 groups, representing control, CKD, and rapamycin-pretreated rats. At the end of the experimental period, blood biochemical indexes on kidney function and expression levels of fibrotic markers, including TGF-β, PAI-1, α-smooth muscle action, fibronectin, CTGF, and collagen-1, were analyzed. In addition, kidney injury markers such as kim-1, cystatin-C, NAG, and NGAL, indicating a progressive fibrotic response, were also studied. RESULTS The results suggest that mTOR inhibition significantly attenuated the induction of fibrosis, with restored serum creatinine and blood urea nitrogen levels. Intriguingly, the microRNA (miRNA) analysis revealed an increased expression of miR-193-5p, miR-221, miR-212, and miR-183-5p in CKD, while an increased mRNA expression of anti-inflammatory cytokines and reduced level of pS6K with attenuated miRNA was found in rapamycin-treated rats compared to the CKD animals. CONCLUSION Activation of mTOR is the major responsive element with activation of miRNAs as an elementary role in the progression of kidney disease. Hence, targeting mTOR would be a possible strategy of treatment for CKD.
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Affiliation(s)
- Jing Wang
- Department of Nephrology, Xingtai People's Hospital, Xingtai, China
| | - Lichao Chai
- Department of Nuclear Medicine, Xingtai People's Hospital, Xingtai, China,
| | - Yi Lu
- Department of Endocrinology, Xingtai People's Hospital, Xingtai, China
| | - Hua Lu
- Department of Nephrology, Xingtai People's Hospital, Xingtai, China
| | - Yanling Liu
- Department of Nephrology, Xingtai People's Hospital, Xingtai, China
| | - Yingying Zhang
- Department of Oncology, Affiliated Hospital of Hebei University of Engineering, Handan, China
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Riggs JL, Pace CE, Ward HH, Gonzalez Bosc LV, Rios L, Barrera A, Kanagy NL. Intermittent hypoxia exacerbates increased blood pressure in rats with chronic kidney disease. Am J Physiol Renal Physiol 2018; 315:F927-F941. [PMID: 29897288 DOI: 10.1152/ajprenal.00420.2017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Kidney injury and sleep apnea (SA) are independent risk factors for hypertension. Exposing rats to intermittent hypoxia (IH) to simulate SA increases blood pressure whereas adenine feeding causes persistent kidney damage to model chronic kidney disease (CKD). We hypothesized that exposing CKD rats to IH would exacerbate the development of hypertension and renal failure. Male Sprague-Dawley rats were fed a 0.2% adenine diet or control diet (Control) until blood urea nitrogen was >120 mg/dl in adenine-fed rats (14 ± 4 days, mean ± SE). After 2 wk of recovery on normal chow, rats were exposed to IH (20 exposures/h of 5% O2-5% CO2 7 h/day) or control conditions (Air) for 6 wk. Mean arterial pressure (MAP) was monitored with telemeters, and plasma and urine samples were collected weekly to calculate creatinine clearance as an index of glomerular filtration rate (GFR). Prior to IH, adenine-fed rats had higher blood pressure than rats on control diet. IH treatment increased MAP in both groups, and after 6 wk, MAP levels in the CKD/IH rats were greater than those in the CKD/Air and Control/IH rats. MAP levels in the Control/Air rats were lower than those in the other three groups. Kidney histology revealed crystalline deposits, tubule dilation, and interstitial fibrosis in both CKD groups. IH caused no additional kidney damage. Plasma creatinine was similarly increased in both CKD groups throughout whereas IH alone increased plasma creatinine. IH increases blood pressure further in CKD rats without augmenting declines in GFR but appears to impair GFR in healthy rats. We speculate that treating SA might decrease hypertension development in CKD patients and protect renal function in SA patients.
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Affiliation(s)
- Jennifer L Riggs
- Department of Cell Biology and Physiology, University of New Mexico , Albuquerque, New Mexico
| | - Carolyn E Pace
- Department of Cell Biology and Physiology, University of New Mexico , Albuquerque, New Mexico
| | - Heather H Ward
- Department of Cell Biology and Physiology, University of New Mexico , Albuquerque, New Mexico
| | - Laura V Gonzalez Bosc
- Department of Cell Biology and Physiology, University of New Mexico , Albuquerque, New Mexico
| | - Lynnette Rios
- Department of Cell Biology and Physiology, University of New Mexico , Albuquerque, New Mexico
| | - Adelaeda Barrera
- Department of Cell Biology and Physiology, University of New Mexico , Albuquerque, New Mexico
| | - Nancy L Kanagy
- Department of Cell Biology and Physiology, University of New Mexico , Albuquerque, New Mexico
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6
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Rahman A, Yamazaki D, Sufiun A, Kitada K, Hitomi H, Nakano D, Nishiyama A. A novel approach to adenine-induced chronic kidney disease associated anemia in rodents. PLoS One 2018; 13:e0192531. [PMID: 29415057 PMCID: PMC5802942 DOI: 10.1371/journal.pone.0192531] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Accepted: 01/25/2018] [Indexed: 12/20/2022] Open
Abstract
To date, good experimental animal models of renal anemia are not available. Therefore, the purpose of this study was to establish a novel approach to induce chronic kidney disease (CKD) with severe anemia by oral administration of adenine in rodents. Adenine was administered to 6-week-old male C57BL/6 mice (25 and 50 mg/kg body weight) by oral gavage daily for 28 days. Serum creatinine and BUN as well as hematocrit, hemoglobin (Hb) and plasma erythropoietin (EPO) levels were monitored to assess renal function and anemia, respectively. Adenine at 25 mg/kg for 28 days slightly increased plasma creatinine levels, but did not induce anemia. In contrast, 50 mg/kg of adenine daily for 28 days showed severe renal dysfunction (plasma creatinine 1.9 ± 0.10 mg/dL) and anemia (hematocrit 36.5 ± 1.0% and EPO 28 ± 2.4 pg/mL) as compared with vehicle-treated mice (0.4 ± 0.02 mg/dL, 49.6 ± 1.6% and 61 ± 4.0 pg/mL, respectively). At the end of experiment, level of Hb also significantly reduced in 50 mg/kg adenine administration group. Remarkable histological changes of kidney tissues characterized by interstitial fibrosis and cystic appearance in tubules were observed in 50 mg/kg of adenine treatment group. These results have demonstrated that oral dosing with adenine at 50 mg/kg for 28 days is suitable to induce a stable anemia associated with CKD in mice.
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Affiliation(s)
- Asadur Rahman
- Department of Pharmacology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Daisuke Yamazaki
- Department of Pharmacology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Abu Sufiun
- Department of Pharmacology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Kento Kitada
- Department of Pharmacology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Hirofumi Hitomi
- Department of Pharmacology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Daisuke Nakano
- Department of Pharmacology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Akira Nishiyama
- Department of Pharmacology, Faculty of Medicine, Kagawa University, Kagawa, Japan
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7
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Törmänen S, Pörsti I, Lakkisto P, Tikkanen I, Niemelä O, Paavonen T, Mustonen J, Eräranta A. Endothelin A receptor blocker and calcimimetic in the adenine rat model of chronic renal insufficiency. BMC Nephrol 2017; 18:323. [PMID: 29078759 PMCID: PMC5659028 DOI: 10.1186/s12882-017-0742-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Accepted: 10/17/2017] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND We studied whether endothelin receptor antagonist and calcimimetic treatments influence renal damage and kidney renin-angiotensin (RA) components in adenine-induced chronic renal insufficiency (CRI). METHODS Male Wistar rats (n = 80) were divided into 5 groups for 12 weeks: control (n = 12), 0.3% adenine (Ade; n = 20), Ade + 50 mg/kg/day sitaxentan (n = 16), Ade + 20 mg/kg/day cinacalcet (n = 16), and Ade + sitaxentan + cinacalcet (n = 16). Blood pressure (BP) was measured using tail-cuff, kidney histology was examined, and RA components measured using RT-qPCR. RESULTS Adenine caused tubulointerstitial damage with severe CRI, anemia, hyperphosphatemia, 1.8-fold increase in urinary calcium excretion, and 3.5-fold and 18-fold increases in plasma creatinine and PTH, respectively. Sitaxentan alleviated tubular atrophy, while sitaxentan + cinacalcet combination reduced interstitial inflammation, tubular dilatation and atrophy in adenine-rats. Adenine diet did not influence kidney angiotensin converting enzyme (ACE) and AT4 receptor mRNA, but reduced mRNA of renin, AT1a, AT2, (pro)renin receptor and Mas to 40-60%, and suppressed ACE2 to 6% of that in controls. Sitaxentan reduced BP by 8 mmHg, creatinine, urea, and phosphate concentrations by 16-24%, and PTH by 42%. Cinacalcet did not influence BP or creatinine, but reduced PTH by 84%, and increased hemoglobin by 28% in adenine-rats. The treatments further reduced renin mRNA by 40%, while combined treatment normalized plasma PTH, urinary calcium, and increased ACE2 mRNA 2.5-fold versus the Ade group (p < 0.001). CONCLUSIONS In adenine-induced interstitial nephritis, sitaxentan improved renal function and tubular atrophy. Sitaxentan and cinacalcet reduced kidney renin mRNA by 40%, while their combination alleviated tubulointerstitial damage and urinary calcium loss, and increased kidney tissue ACE2 mRNA.
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Affiliation(s)
- Suvi Törmänen
- Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland
| | - Ilkka Pörsti
- Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland. .,Department of Internal Medicine, Tampere University Hospital, Tampere, Finland. .,School of Medicine / Internal Medicine, FIN-33014 University of Tampere, Tampere, Finland.
| | - Päivi Lakkisto
- Minerva Institute for Medical Research, Helsinki, Finland.,Clinical Chemistry and Hematology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Ilkka Tikkanen
- Minerva Institute for Medical Research, Helsinki, Finland.,Abdominal Center, Nephrology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Onni Niemelä
- Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland.,Medical Research Unit, Seinäjoki Central Hospital, Seinäjoki, Finland
| | - Timo Paavonen
- Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland.,Fimlab Laboratories, Tampere, Finland
| | - Jukka Mustonen
- Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland.,Department of Internal Medicine, Tampere University Hospital, Tampere, Finland
| | - Arttu Eräranta
- Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland
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Ramani R, Ramachandran A, Ravindran S, Kurian GA. Erythrocyte Membrane Bound ATPase and Antioxidant Enzyme Changes Associated with Vascular Calcification is Reduced by Sodium Thiosulfate. Indian J Clin Biochem 2017; 32:487-492. [PMID: 29062183 DOI: 10.1007/s12291-016-0625-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Accepted: 11/09/2016] [Indexed: 01/25/2023]
Abstract
Sodium thiosulfate (STS), a cyanide antidote has been reported to possess antioxidant and calcium chelation effects, useful for the treatment of renal failure due to vascular calcification and urolithiasis. The present study investigated the in vivo modulatory effects of STS on erythrocyte calcium, phosphorous levels, lipid peroxidation, antioxidant enzyme and membrane ATPase activities (Ca2+, Na+K+, Mg2+ and 5'' nucleotidase) in an adenine induced model of vascular calcification in rats. Adenine (0.75%) was supplemented through the diet for 28 days, which resulted in significantly (P < 0.05) increased circulating calcium and phosphorous product and oxidative stress within the RBCs, as measured from lipid peroxidation and reduced antioxidant enzymes. The membrane ATPase activities were altered (increased Ca2+, Na+K+ ATPase and decreased Mg+ ATPase, 5' nucleotidase) compared to the rats fed on normal diet. STS (400 mg/kg) given orally was effective in establishing a normalcy in the RBC alterations. This effect was more pronounced, when STS was given from day 28 to day 49 after induction of calcification, instead of day 0 to day 28. These findings may benefit to evaluate the effectiveness of STS therapy in patients with chronic renal failure associated with increased circulating calcium and phosphorous product that leads to stiffening of vascular smooth muscles of aorta, due to calcium deposition.
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Affiliation(s)
- Ramya Ramani
- School of Chemical and Biotechnology, SASTRA University, Thanjavur, India
| | | | - Sriram Ravindran
- Vascular Biology Lab, SASTRA University, Thanjavur, 613401 India
| | - Gino A Kurian
- Vascular Biology Lab, SASTRA University, Thanjavur, 613401 India
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9
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Peng CK, Huang KL, Lan CC, Hsu YJ, Wu GC, Peng CH, Wu CP, Chan KS. Experimental chronic kidney disease attenuates ischemia-reperfusion injury in an ex vivo rat lung model. PLoS One 2017; 12:e0171736. [PMID: 28291795 PMCID: PMC5349449 DOI: 10.1371/journal.pone.0171736] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2016] [Accepted: 01/25/2017] [Indexed: 11/22/2022] Open
Abstract
Lung ischemia reperfusion injury (LIRI) is one of important complications following lung transplant and cardiopulmonary bypass. Although patients on hemodialysis are still excluded as lung transplant donors because of the possible effects of renal failure on the lungs, increased organ demand has led us to evaluate the influence of chronic kidney disease (CKD) on LIRI. A CKD model was induced by feeding Sprague-Dawley rats an adenine-rich (0.75%) diet for 2, 4 and 6 weeks, and an isolated rat lung in situ model was used to evaluate ischemia reperfusion (IR)-induced acute lung injury. The clinicopathological parameters of LIRI, including pulmonary edema, lipid peroxidation, histopathological changes, immunohistochemistry changes, chemokine CXCL1, inducible nitric oxide synthase (iNOS), proinflammatory and anti-inflammatory cytokines, heat shock protein expression, and nuclear factor-κB (NF-κB) activation were determined. Our results indicated that adenine-fed rats developed CKD as characterized by increased blood urea nitrogen and creatinine levels and the deposition of crystals in the renal tubules and interstitium. IR induced a significant increase in the pulmonary arterial pressure, lung edema, lung injury scores, the expression of CXCL1 mRNA, iNOS level, and protein concentration of the bronchial alveolar lavage fluid (BALF). The tumor necrosis factor-α levels in the BALF and perfusate; the interleukin-10 level in the perfusate; and the malondialdehyde levels in the lung tissue and perfusate were also significantly increased by LIRI. Counterintuitively, adenine-induced CKD significantly attenuated the severity of lung injury induced by IR. CKD rats exhibited increased heat shock protein 70 expression and decreased activation of NF-κB signaling. In conclusion, adenine-induced CKD attenuated LIRI by inhibiting the NF-κB pathway.
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Affiliation(s)
- Chung-Kan Peng
- Division of Pulmonary and Critical Care, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, Republic of China
| | - Kun-Lun Huang
- Institute of Undersea and Hyperbaric Medicine, National Defense Medical Center, Taipei, Taiwan, Republic of China
| | - Chou-Chin Lan
- Division of Pulmonary Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taipei, Taiwan, Republic of China
- School of Medicine, Tzu Chi University, Hualien, Taiwan, Republic of China
| | - Yu-Juei Hsu
- Division of Nephrology, Department of Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, Republic of China
| | - Geng-Chin Wu
- Division of Pulmonary Medicine, Department of Internal Medicine, Taoyuan Armed Forces General Hospital, Lungtan, Taoyuan, Taiwan, Republic of China
| | - Chia-Hui Peng
- Division of Clinical Nutrition, Taoyuan Armed Forces General Hospital, Lungtan, Taoyuan, Taiwan, Republic of China
| | - Chin-Pyng Wu
- Department of Critical Care Medicine, Li-Shin Hospital, Taoyuan, Taiwan, Republic of China
- * E-mail: (KSC); (CPW)
| | - Khee-Siang Chan
- Department of Critical Care Medicine, Chi-Mei Medical Center, Tainan, Taiwan Republic of China
- * E-mail: (KSC); (CPW)
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10
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Krishnaraj P, Ravindran S, Kurian GA. The renal mitochondrial dysfunction in patients with vascular calcification is prevented by sodium thiosulfate. Int Urol Nephrol 2016; 48:1927-1935. [PMID: 27465796 DOI: 10.1007/s11255-016-1375-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Accepted: 07/18/2016] [Indexed: 10/21/2022]
Abstract
PURPOSE Vascular calcification (VC) is an impact of calcium accumulation in end-stage renal diseases, normally initiated in the mitochondria. Sodium thiosulfate (STS) is effective in rescuing mitochondrial function in the neurovascular complications associated with VC, but has limitation in protecting the cardiac mitochondria. However, the STS efficacy in restoring the renal mitochondrial function has not been studied, which is the primary focus of this study. METHODS Wistar rats (n = 6/group) were administered 0.75 % adenine in the diet for 28 days to induce renal failure. STS (400 mg/kg) was given in two regimens STS_Pre (preventive: along with adenine for 28 days) and STS_Cur (curative: 29th to 49th day). Renal failure was assessed by plasma and urinary markers. The effectiveness of treatment was assessed from oxidative stress, DNA damage, mitochondrial physiology and enzymology in the renal tissue. RESULTS 0.75 % adenine diet caused renal medullary swelling, tubular interstitial nephropathy and impaired renal function (creatinine, urea, uric acid and ALP), which were recovered after STS treatment. The renal failure was due to oxidative stress as measured by elevated malondialdehyde (29 %) and lowered reduced glutathione (27 %) levels. STS reduced the lipid peroxidation and significantly (p < 0.05) elevated the antioxidant enzymes. Further, it improved renal mitochondrial respiratory capacity by maintaining the hyperpolarized membrane potential and restored the complex enzyme activities. Absence of renal DNA fragmentation supports the above findings. CONCLUSION STS protects the kidney by preserving renal mitochondria, in experimental adenine-induced vascular calcified rats. The efficacy was prominent when given after induction, i.e., in STS_Cur group.
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Affiliation(s)
| | - Sriram Ravindran
- Vascular Biology Lab, Sastra University, Thanjavur, 613401, India
| | - Gino A Kurian
- Vascular Biology Lab, Sastra University, Thanjavur, 613401, India.
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Akchurin O, Sureshbabu A, Doty SB, Zhu YS, Patino E, Cunningham-Rundles S, Choi ME, Boskey A, Rivella S. Lack of hepcidin ameliorates anemia and improves growth in an adenine-induced mouse model of chronic kidney disease. Am J Physiol Renal Physiol 2016; 311:F877-F889. [PMID: 27440777 DOI: 10.1152/ajprenal.00089.2016] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Accepted: 07/15/2016] [Indexed: 01/04/2023] Open
Abstract
Growth delay is common in children with chronic kidney disease (CKD), often associated with poor quality of life. The role of anemia in uremic growth delay is poorly understood. Here we describe an induction of uremic growth retardation by a 0.2% adenine diet in wild-type (WT) and hepcidin gene (Hamp) knockout (KO) mice, compared with their respective littermates fed a regular diet. Experiments were started at weaning (3 wk). After 8 wk, blood was collected and mice were euthanized. Adenine-fed WT mice developed CKD (blood urea nitrogen 82.8 ± 11.6 mg/dl and creatinine 0.57 ± 0.07 mg/dl) and were 2.1 cm shorter compared with WT controls. WT adenine-fed mice were anemic and had low serum iron, elevated Hamp, and elevated IL6 and TNF-α. WT adenine-fed mice had advanced mineral bone disease (serum phosphorus 16.9 ± 3.1 mg/dl and FGF23 204.0 ± 115.0 ng/ml) with loss of cortical and trabecular bone volume seen on microcomputed tomography. Hamp disruption rescued the anemia phenotype resulting in improved growth rate in mice with CKD, thus providing direct experimental evidence of the relationship between Hamp pathway and growth impairment in CKD. Hamp disruption ameliorated CKD-induced growth hormone-insulin-like growth factor 1 axis derangements and growth plate alterations. Disruption of Hamp did not mitigate the development of uremia, inflammation, and mineral and bone disease in this model. Taken together, these results indicate that an adenine diet can be successfully used to study growth in mice with CKD. Hepcidin appears to be related to pathways of growth retardation in CKD suggesting that investigation of hepcidin-lowering therapies in juvenile CKD is warranted.
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Affiliation(s)
| | | | - Steve B Doty
- Hospital for Special Surgery, New York, New York; and
| | | | | | | | | | - Adele Boskey
- Weill Cornell Medicine, New York, New York.,Hospital for Special Surgery, New York, New York; and
| | - Stefano Rivella
- Weill Cornell Medicine, New York, New York.,Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, Pennsylvania
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Zhao YY, Shen X, Cheng XL, Wei F, Bai X, Lin RC. Urinary metabonomics study on the protective effects of ergosta-4,6,8(14),22-tetraen-3-one on chronic renal failure in rats using UPLC Q-TOF/MS and a novel MSE data collection technique. Process Biochem 2012. [DOI: 10.1016/j.procbio.2012.07.008] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Ikeda R, Imai Y, Maruyama W, Mizoguchi K. Systemic disorders of calcium dynamics in rats with adenine-induced renal failure: implication for chronic kidney disease-related complications. Nephrology (Carlton) 2010; 15:54-62. [PMID: 20377772 DOI: 10.1111/j.1440-1797.2009.01161.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
AIM Chronic kidney disease (CKD) causes the dysregulation of systemic mineral metabolism. A major issue in CKD patients is the emergence of ectopic calcification in soft tissues, presumably due to increased levels of calcium (Ca) or inorganic phosphorus (Pi); however, the precise mechanisms have not been fully elucidated. Therefore, this study aims to evaluate Ca dynamics in an animal model of CKD. METHODS Renal failure was produced in rats by feeding an adenine-containing diet for 4 weeks, and time-course changes in biochemical parameters, including Ca, Pi, creatinine (Cr), blood urea nitrogen (BUN), parathyroid hormone (PTH), 1,25-dihydroxyvitamin D(3), and N-telopeptide and cross-linked collagen type I (NTx), were monitored once a week during the feeding period. Intestinal absorption, tissue contents, and urinary excretion of Ca were monitored using radioisotope (RI) (45)Ca. RESULTS Adenine-fed rats exhibited renal failure, ectopic calcification and altered serum parameters, including elevated levels of serum Pi, Cr, PTH and BUN. Serum Ca levels were not increased in rats with renal failure. RI-based experiments revealed that abnormal Ca dynamics including attenuated intestinal absorption, increased incorporation into soft tissues, particularly aortic tissue, in which it was increased threefold, and enhanced urinary excretion occurred in renal failure rats. CONCLUSION Rats with renal failure induced by an adenine diet exhibited severe abnormality of Ca dynamics, including Ca shortage and ectopic accumulation of Ca. These findings would provide useful information to research CKD-related complications.
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Affiliation(s)
- Ryuji Ikeda
- Section of Oriental Medicine, National Institute for Longevity Sciences, National Centre for Geriatrics and Gerontology, Aichi, Japan.
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Tamagawa K, Nakayama-Imaohji H, Wakimoto S, Ichimura M, Kuwahara T. Utilization of titanium oxide-like compound as an inorganic phosphate adsorbent for the control of serum phosphate level in chronic renal failure. THE JOURNAL OF MEDICAL INVESTIGATION 2010; 57:275-83. [DOI: 10.2152/jmi.57.275] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Kazuhiko Tamagawa
- Department of Immunology and Parasitology, Institute of Health Biosciences, the University of Tokushima Graduate School
- Tomita Pharmaceutical Co. Ltd.,
| | - Haruyuki Nakayama-Imaohji
- Department of Immunology and Parasitology, Institute of Health Biosciences, the University of Tokushima Graduate School
| | - Shin Wakimoto
- Department of Immunology and Parasitology, Institute of Health Biosciences, the University of Tokushima Graduate School
| | - Minoru Ichimura
- Department of Immunology and Parasitology, Institute of Health Biosciences, the University of Tokushima Graduate School
| | - Tomomi Kuwahara
- Department of Immunology and Parasitology, Institute of Health Biosciences, the University of Tokushima Graduate School
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Ogirima T, Tano K, Kanehara M, Gao M, Wang X, Guo Y, Zhang Y, Guo L, Ishida T. Sex difference of adenine effects in rats: renal function, bone mineral density and sex steroidogenesis. Endocr J 2006; 53:407-13. [PMID: 16723811 DOI: 10.1507/endocrj.k05-009] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Adenine is widely used in clinical field, however, an excess of adenine is harmful. It is known that the feeding of an adenine-rich diet induces renal failure and decreases bone mineral density (BMD) and the serum testosterone level in male rats. However, there is little information about the influence of adenine on female animals. We compared the effects of adenine treatment between male and female rats. Young male and female rats were administered adenine adjusted with distilled water (6 mg/ml, 50 mg/ml and 100 mg/ml) for 8 weeks (3 times/week, 8-16 week old). In male rats, renal failure was induced by 100 mg/ml adenine treatment and renal dysfunction was induced by 50 mg/ml adenine treatment. Bone loss and the reduction of the testosterone level were also caused by both concentrations of adenine. However, the serum testosterone level and BMD in male rats were decreased by 6 mg/ml adenine treatment by which renal dysfunction was not caused. It is suggested that adenine directly affected bone metabolism and sex steroidgenesis in male animals, not through altering renal dysfunction. In female rats, conversely, renal dysfunction was induced only in the 100 mg/ml group, which was somewhat different from the observation in male rats. The serum 17-beta estradiol level and the BMD in female rats were not affected by adenine treatment at all. In conclusion, there is a significant difference of the effects of adenine, which is commonly contained in medicine and general foods, on steroidgenesis and renal function between male and female rats.
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Affiliation(s)
- Takeshi Ogirima
- Graduate school of Health Science, Suzuka University of Medical Science, Suzuka, Mie, Japan
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Katsumata K, Kusano K, Hirata M, Tsunemi K, Nagano N, Burke SK, Fukushima N. Sevelamer hydrochloride prevents ectopic calcification and renal osteodystrophy in chronic renal failure rats. Kidney Int 2003; 64:441-50. [PMID: 12846739 DOI: 10.1046/j.1523-1755.2003.00126.x] [Citation(s) in RCA: 126] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND Hyperphosphatemia is associated with severe complications, including ectopic calcification of soft tissues, secondary hyperparathyroidism, and renal osteodystrophy (ROD). Sevelamer hydrochloride is a nonabsorbed calcium- and metal-free phosphate binder that lowers serum phosphorus levels in hemodialysis patients. This study examined the efficacy of sevelamer in preventing ectopic calcification of soft tissues and ROD in adenine-induced renal failure rats. METHODS Male, 12-week-old Wistar-Jcl rats were freely fed an adenine diet (0.75 g adenine in 100 g normal diet) for four weeks. After three weeks of the adenine diet, when serum phosphorus levels had significantly increased, the rats were freely fed a normal diet that contained 1% or 2% of sevelamer for another five weeks. Time course changes of serum levels of phosphorus, calcium, and parathyroid hormone (PTH) were measured. At the end of the study, calcium and phosphorus levels in the heart and aorta were measured, and the calcification of kidney, heart, aorta, and stomach were histopathologically examined. The severity of ROD was evaluated by a histopathologic and morphometric analysis of the femurs. RESULTS Compared with the adenine controls (N = 10), the sevelamer-treated (1%, N = 6; and 2%, N = 10) groups of adenine-induced renal failure rats had reduced serum phosphorus, serum calcium x phosphorus product, and serum PTH levels. Moreover, in the treatment groups, sevelamer suppressed calcification of the aorta media, and also the osteoid volume, fibrosis volume, and porosity ratio of femurs. CONCLUSION These results suggest that sevelamer treatment might contribute to the suppression of ectopic calcification and ROD.
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Affiliation(s)
- Kyoko Katsumata
- Fuji Gotemba Research Laboratory, Chugai Pharmaceutical Co., Ltd., Shizuoka, Japan
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