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Zhao Y, Tang X, Lei T, Fu D, Zhang H. Lipocalin-2 promotes breast cancer brain metastasis by enhancing tumor invasion and modulating brain microenvironment. Front Oncol 2024; 14:1448089. [PMID: 39188682 PMCID: PMC11345181 DOI: 10.3389/fonc.2024.1448089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2024] [Accepted: 07/29/2024] [Indexed: 08/28/2024] Open
Abstract
Breast cancer is the leading cancer diagnosed in women globally, with brain metastasis emerging as a major cause of death, particularly in human epidermal growth factor receptor 2 positive and triple-negative breast cancer subtypes. Comprehensive understanding of the molecular foundations of central nervous system metastases is imperative for the evolution of efficacious treatment strategies. Lipocalin-2 (LCN2), a secreted iron transport protein with multiple functions, has been linked to the progression of breast cancer brain metastasis (BCBM). In primary tumors, LCN2 promotes the proliferation and angiogenesis of breast cancer cells, triggers the epithelial-mesenchymal transition, interacts with matrix metalloproteinase-9, thereby facilitating the reorganization of the extracellular matrix and enhancing cancer cell invasion and migration. In brain microenvironment, LCN2 undermines the blood-brain barrier and facilitates tumor seeding in the brain by modulating the behavior of key cellular components. In summary, this review meticulously examines the fuel role of LCN2 in BCBM cascade, and investigates the potential mechanisms involved. It highlights the potential of LCN2 as both a therapeutic target and biomarker, indicating that interventions targeting LCN2 may offer improved outcomes for patients afflicted with BCBM.
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Affiliation(s)
- Yang Zhao
- Department of Microbiology and Immunology, School of Medicine, Jinan University, Guangzhou, Guangdong, China
| | - Xiaogen Tang
- Department of Microbiology and Immunology, School of Medicine, Jinan University, Guangzhou, Guangdong, China
| | - Tingting Lei
- Department of Microbiology and Immunology, School of Medicine, Jinan University, Guangzhou, Guangdong, China
| | - Dongwei Fu
- Department of Oncology, The Affiliated Shunde Hospital of Jinan University, Foshan, Guangdong, China
| | - Hongyi Zhang
- Department of Microbiology and Immunology, School of Medicine, Jinan University, Guangzhou, Guangdong, China
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2
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Li M, Luo G, Qiu Y, Zhang X, Sun X, Li Y, Zhao Y, Sun W, Yang S, Li J. Negative symptoms and neurocognition in drug-naïve schizophrenia: moderating role of plasma neutrophil gelatinase-associated lipocalin (NGAL) and interferon-gamma (INF-γ). Eur Arch Psychiatry Clin Neurosci 2024; 274:1071-1081. [PMID: 37490111 DOI: 10.1007/s00406-023-01650-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 07/07/2023] [Indexed: 07/26/2023]
Abstract
Previous studies reported that peripheral inflammation was associated with cognitive performance and brain structure in schizophrenia. However, the moderating effect of inflammation has not been extensively studied. This study investigated whether inflammation markers moderated the association between negative symptoms and neurocognition in schizophrenia. This cross-sectional study included 137 drug-naïve schizophrenia patients (DNS) and 67 healthy controls (HC). We performed the Measurements and Treatment Research to Improve Cognition in Schizophrenia (MATRICS) Consensus Cognitive Battery (MCCB) for cognitive assessment and the Positive and Negative Syndrome Scale (PANSS) for psychiatric symptoms. Plasma concentrations of interferon-gamma (IFN-γ), neutrophil gelatinase-associated lipocalin (NGAL), and nuclear factor kappa B (NF-κB) were measured. The MCCB neurocognition score, social cognition score, and total score; the plasma concentrations of NGAL, IFN-γ, and NF-κB were significantly decreased in DNS than in HC (all P's < 0.001). PANSS negative subscale (PNS), PANSS reduced expressive subdomain (RES) negatively correlated with neurocognition score (P = 0.007; P = 0.011, respectively). Plasma concentrations of IFN-γ and NGAL positively correlated with neurocognition score (P = 0.043; P = 0.008, relatively). The interactions of PNS × NGAL; PNS × IFN-γ; RES × IFN-γ accounted for significant neurocognition variance (P = 0.025; P = 0.029, P = 0.007, respectively). Simple slope analysis showed that all the above moderating effects only occurred in patients with near normal IFN-γ and NGAL levels. Plasma concentrations of IFN-γ and NGAL moderated the relationship between negative symptoms (especially RES) and neurocognition in schizophrenia. Treatment targeting inflammation may contribute to neurocognition improvement in schizophrenia.
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Affiliation(s)
- Meijuan Li
- Tianjin Mental Health Institute, Tianjin Anding Hospital, Mental Health Center of Tianjin Medical University, 13 Liulin Road, Hexi District, Tianjin, 300222, China
| | - Guoshuai Luo
- Tianjin Mental Health Institute, Tianjin Anding Hospital, Mental Health Center of Tianjin Medical University, 13 Liulin Road, Hexi District, Tianjin, 300222, China
| | - Yuying Qiu
- Tianjin Mental Health Institute, Tianjin Anding Hospital, Mental Health Center of Tianjin Medical University, 13 Liulin Road, Hexi District, Tianjin, 300222, China
| | - Xue Zhang
- Tianjin Mental Health Institute, Tianjin Anding Hospital, Mental Health Center of Tianjin Medical University, 13 Liulin Road, Hexi District, Tianjin, 300222, China
- Chifeng Anding Hospital, Chifeng, China
| | - Xiaoxiao Sun
- Tianjin Mental Health Institute, Tianjin Anding Hospital, Mental Health Center of Tianjin Medical University, 13 Liulin Road, Hexi District, Tianjin, 300222, China
| | - Yanzhe Li
- Tianjin Mental Health Institute, Tianjin Anding Hospital, Mental Health Center of Tianjin Medical University, 13 Liulin Road, Hexi District, Tianjin, 300222, China
| | - Yongping Zhao
- Tianjin Mental Health Institute, Tianjin Anding Hospital, Mental Health Center of Tianjin Medical University, 13 Liulin Road, Hexi District, Tianjin, 300222, China
| | - Wei Sun
- Tianjin Mental Health Institute, Tianjin Anding Hospital, Mental Health Center of Tianjin Medical University, 13 Liulin Road, Hexi District, Tianjin, 300222, China
| | - Shu Yang
- Tianjin Mental Health Institute, Tianjin Anding Hospital, Mental Health Center of Tianjin Medical University, 13 Liulin Road, Hexi District, Tianjin, 300222, China
| | - Jie Li
- Tianjin Mental Health Institute, Tianjin Anding Hospital, Mental Health Center of Tianjin Medical University, 13 Liulin Road, Hexi District, Tianjin, 300222, China.
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Çiftci H, Aşut G, Kaya H, Çakmak IB, Aydıner Yılmaz M, Çöpür A, Çalcı E, Fırat Oğuz E, Turhan T, Göka E. Neutrophil gelatinase-associated lipocalin (NGAL) and inflammatory markers in schizophrenia: A comparative analysis of drug-naive schizophrenia patients, remitted patients, and healthy controls. J Psychiatr Res 2024; 169:14-21. [PMID: 37995497 DOI: 10.1016/j.jpsychires.2023.11.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 09/18/2023] [Accepted: 11/15/2023] [Indexed: 11/25/2023]
Abstract
This study aims to examine the plasma concentrations of NGAL and other inflammatory parameters, including TNF-α, IL-1β, and IFN-γ, in schizophrenia patients and healthy volunteers. It also investigates potential associations between these biomarkers and symptom severity in schizophrenia and the utility of NGAL as a potential diagnostic and monitoring biomarker for schizophrenia. The study included 49 drug-naive schizophrenia patients (DNS), 59 patients with schizophrenia in remission (REM) on antipsychotic treatment, and 58 healthy volunteers (HC). The Positive and Negative Symptoms Evaluation Scale (PANSS) was utilized to assess the severity of symptoms in schizophrenia patients. Plasma levels of TNF-α, IL-1β, IFN-γ, and NGAL were measured for all participants. NGAL levels were significantly lower in the DNS group than in HC. Significantly lower TNF-α levels were observed in both the DNS and REM groups compared to the HC group. Notably, a statistically significant positive correlation was detected between TNF-α and NGAL levels. The findings of this study are noteworthy, as they demonstrate that drug-naive individuals with schizophrenia exhibit significantly diminished levels of NGAL and TNF-α compared to healthy controls. These identified biomarkers hold promise for providing valuable insights into the complex and evolving pathophysiology of schizophrenia.
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Affiliation(s)
- Hatice Çiftci
- Department of Psychiatry, University of Health Sciences Ankara City Hospital, Ankara, Turkey.
| | - Gonca Aşut
- Department of Psychiatry, Baskent University Faculty of Medicine, Ankara, Turkey.
| | - Hasan Kaya
- Department of Psychiatry, University of Health Sciences Ankara City Hospital, Ankara, Turkey.
| | | | - Meltem Aydıner Yılmaz
- Department of Psychiatry, Samsun Mental Health and Dıseases Hospital, Samsun, Turkey
| | - Ahmet Çöpür
- Department of Psychiatry, University of Health Sciences Ankara Etlik City Hospital, Ankara, Turkey
| | - Esin Çalcı
- Department of Clinical Biochemistery, Uşak Public Health Laboratory, Uşak, Turkey
| | - Esra Fırat Oğuz
- Department of Clinical Biochemistery, University of Health Sciences Ankara City Hospital, Ankara, Turkey
| | - Turan Turhan
- Department of Clinical Biochemistery, University of Health Sciences Ankara City Hospital, Ankara, Turkey
| | - Erol Göka
- Department of Psychiatry, University of Health Sciences Ankara City Hospital, Ankara, Turkey.
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Baek J, Kim S. Effects of Transfusion of Stored Red Blood Cells on Renal Ischemia-Reperfusion–Induced Hepatic Injury in Rats. Transplant Proc 2023; 55:629-636. [PMID: 37005156 DOI: 10.1016/j.transproceed.2023.02.053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 01/26/2023] [Accepted: 02/24/2023] [Indexed: 04/03/2023]
Abstract
BACKGROUND Renal ischemia-reperfusion (IR) injures the liver as well as the kidneys. Transfusion of stored red blood cells (RBCs) triggers inflammatory responses, oxidative stress, and activation of innate immunity. In the present study, we investigated the effect of transfusion of stored RBCs on renal IR-induced hepatic injury. METHODS Sprague-Dawley rats were randomly divided into 3 groups based on the following treatments: rats subjected to sham operation (sham group), rats subjected to the induction of renal IR only (RIR group), and rats transfused with stored RBCs 1 hour after the start of reperfusion (RIR-TF group). Renal ischemia was induced for 1 hour, and reperfusion was allowed for 24 hours. After reperfusion, blood and liver tissue samples were obtained. RESULTS Serum levels of aspartate and alanine aminotransferase were increased in the RIR-TF group compared with those in the RIR and sham groups. The hepatic mRNA expression levels of heme oxygenase-1 and neutrophil gelatinase-associated lipocalin were increased in the RIR-TF group compared with those in the RIR and sham groups. The mRNA expression level of high mobility group box-1 was also increased in the RIR-TF group compared with that in the RIR group. CONCLUSION The transfusion of stored RBCs exacerbates renal IR-induced liver damage. Oxidative stress may be responsible for hepatic injury.
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Grubwieser P, Hoffmann A, Hilbe R, Seifert M, Sonnweber T, Böck N, Theurl I, Weiss G, Nairz M. Airway Epithelial Cells Differentially Adapt Their Iron Metabolism to Infection With Klebsiella pneumoniae and Escherichia coli In Vitro. Front Cell Infect Microbiol 2022; 12:875543. [PMID: 35663465 PMCID: PMC9157649 DOI: 10.3389/fcimb.2022.875543] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 04/22/2022] [Indexed: 12/13/2022] Open
Abstract
Background Pneumonia is often elicited by bacteria and can be associated with a severe clinical course, respiratory failure and the need for mechanical ventilation. In the alveolus, type-2-alveolar-epithelial-cells (AECII) contribute to innate immune functions. We hypothesized that AECII actively adapt cellular iron homeostasis to restrict this essential nutrient from invading pathogens - a defense strategy termed 'nutritional immunity', hitherto mainly demonstrated for myeloid cells. Methods We established an in-vitro infection model using the human AECII-like cell line A549. We infected cells with Klebsiella pneumoniae (K. pneumoniae) and Escherichia coli (E. coli), two gram-negative bacteria with different modes of infection and frequent causes of hospital-acquired pneumonia. We followed the entry and intracellular growth of these gram-negative bacteria and analyzed differential gene expression and protein levels of key inflammatory and iron metabolism molecules. Results Both, K. pneumoniae and E. coli are able to invade A549 cells, whereas only K. pneumoniae is capable of proliferating intracellularly. After peak bacterial burden, the number of intracellular pathogens declines, suggesting that epithelial cells initiate antimicrobial immune effector pathways to combat bacterial proliferation. The extracellular pathogen E. coli induces an iron retention phenotype in A549 cells, mainly characterized by the downregulation of the pivotal iron exporter ferroportin, the upregulation of the iron importer transferrin-receptor-1 and corresponding induction of the iron storage protein ferritin. In contrast, cells infected with the facultative intracellular bacterium K. pneumoniae exhibit an iron export phenotype indicated by ferroportin upregulation. This differential regulation of iron homeostasis and the pathogen-specific inflammatory reaction is likely mediated by oxidative stress. Conclusion AECII-derived A549 cells show pathogen-specific innate immune functions and adapt their iron handling in response to infection. The differential regulation of iron transporters depends on the preferential intra- or extracellular localization of the pathogen and likely aims at limiting bacterial iron availability.
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Affiliation(s)
- Philipp Grubwieser
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria
| | - Alexander Hoffmann
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria
- Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Innsbruck, Austria
| | - Richard Hilbe
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria
| | - Markus Seifert
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria
| | - Thomas Sonnweber
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria
| | - Nina Böck
- Biocenter, Institute of Bioinformatics, Medical University of Innsbruck, Innsbruck, Austria
| | - Igor Theurl
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria
| | - Günter Weiss
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria
- Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Innsbruck, Austria
| | - Manfred Nairz
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria
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Schröder SK, Pinoé-Schmidt M, Weiskirchen R. Lipocalin-2 (LCN2) Deficiency Leads to Cellular Changes in Highly Metastatic Human Prostate Cancer Cell Line PC-3. Cells 2022; 11:cells11020260. [PMID: 35053376 PMCID: PMC8773519 DOI: 10.3390/cells11020260] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 01/05/2022] [Accepted: 01/10/2022] [Indexed: 02/01/2023] Open
Abstract
The transporter protein lipocalin-2 (LCN2) also termed neutrophil-gelatinase-associated lipocalin (NGAL) has pleiotropic effects in tumorigenesis in various cancers. Since the precise role of LCN2 in prostate cancer (PCa) is poorly understood, we aimed to elucidate its functions in PCa in vitro. For this purpose, LCN2 was transiently suppressed or permanently depleted in human PC-3 cells using siRNA or CRISPR/Cas9-mediated knockout. Effects of LCN2 suppression on expression of different tumorigenic markers were investigated by Western blot analysis and RT-qPCR. LCN2 knockout cells were analyzed for cellular changes and their ability to cope endoplasmic stress compared to parenteral PC-3 cells. Reduced LCN2 was accompanied by decreased expression of IL-1β and Cx43. In PC-3 cells, LCN2 deficiency leads to reduced proliferation, diminished expression of pro-inflammatory cytokines, lower adhesion, and disrupted F-actin distribution. In addition, IL-1β expression strongly correlated with LCN2 levels. LCN2 knockout cells showed enhanced and sustained activation of unfolded protein response proteins when treated with tunicamycin or cultured under glucose deprivation. Interestingly, an inverse correlation between phosphorylation of eukaryotic initiation factor 2 α subunit (p-eIF2α) and LCN2 expression was observed suggesting that LCN2 triggers protein synthesis under stress conditions. The finding that LCN2 depletion leads to significant phenotypic and cellular changes in PC-3 cells adds LCN2 as a valuable target for the treatment of PCa.
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Dekens DW, Eisel ULM, Gouweleeuw L, Schoemaker RG, De Deyn PP, Naudé PJW. Lipocalin 2 as a link between ageing, risk factor conditions and age-related brain diseases. Ageing Res Rev 2021; 70:101414. [PMID: 34325073 DOI: 10.1016/j.arr.2021.101414] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 07/19/2021] [Accepted: 07/20/2021] [Indexed: 12/12/2022]
Abstract
Chronic (neuro)inflammation plays an important role in many age-related central nervous system (CNS) diseases, including Alzheimer's disease, Parkinson's disease and vascular dementia. Inflammation also characterizes many conditions that form a risk factor for these CNS disorders, such as physical inactivity, obesity and cardiovascular disease. Lipocalin 2 (Lcn2) is an inflammatory protein shown to be involved in different age-related CNS diseases, as well as risk factor conditions thereof. Lcn2 expression is increased in the periphery and the brain in different age-related CNS diseases and also their risk factor conditions. Experimental studies indicate that Lcn2 contributes to various neuropathophysiological processes of age-related CNS diseases, including exacerbated neuroinflammation, cell death and iron dysregulation, which may negatively impact cognitive function. We hypothesize that increased Lcn2 levels as a result of age-related risk factor conditions may sensitize the brain and increase the risk to develop age-related CNS diseases. In this review we first provide a comprehensive overview of the known functions of Lcn2, and its effects in the CNS. Subsequently, this review explores Lcn2 as a potential (neuro)inflammatory link between different risk factor conditions and the development of age-related CNS disorders. Altogether, evidence convincingly indicates Lcn2 as a key constituent in ageing and age-related brain diseases.
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Affiliation(s)
- Doortje W Dekens
- Department of Neurology and Alzheimer Center Groningen, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands; Department of Molecular Neurobiology, Groningen Institute for Evolutionary Life Sciences (GELIFES), University of Groningen, Groningen, the Netherlands
| | - Ulrich L M Eisel
- Department of Molecular Neurobiology, Groningen Institute for Evolutionary Life Sciences (GELIFES), University of Groningen, Groningen, the Netherlands
| | - Leonie Gouweleeuw
- Department of Molecular Neurobiology, Groningen Institute for Evolutionary Life Sciences (GELIFES), University of Groningen, Groningen, the Netherlands
| | - Regien G Schoemaker
- Department of Molecular Neurobiology, Groningen Institute for Evolutionary Life Sciences (GELIFES), University of Groningen, Groningen, the Netherlands
| | - Peter P De Deyn
- Department of Neurology and Alzheimer Center Groningen, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands; Laboratory of Neurochemistry and Behaviour, Biobank, Institute Born-Bunge, University of Antwerp, Antwerp, Belgium
| | - Petrus J W Naudé
- Department of Neurology and Alzheimer Center Groningen, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands; Department of Molecular Neurobiology, Groningen Institute for Evolutionary Life Sciences (GELIFES), University of Groningen, Groningen, the Netherlands; Department of Psychiatry and Mental Health and Neuroscience Institute, Brain Behaviour Unit, University of Cape Town, Cape Town, South Africa.
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Lipocalin 2 stimulates bone fibroblast growth factor 23 production in chronic kidney disease. Bone Res 2021; 9:35. [PMID: 34334787 PMCID: PMC8326281 DOI: 10.1038/s41413-021-00154-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 03/23/2021] [Accepted: 04/20/2021] [Indexed: 12/15/2022] Open
Abstract
Bone-produced fibroblast growth factor 23 (FGF23) increases in response to inflammation and iron deficiency and contributes to cardiovascular mortality in chronic kidney disease (CKD). Neutrophil gelatinase-associated lipocalin (NGAL or lipocalin 2; LCN2 the murine homolog) is a pro-inflammatory and iron-shuttling molecule that is secreted in response to kidney injury and may promote CKD progression. We investigated bone FGF23 regulation by circulating LCN2. At 23 weeks, Col4a3KO mice showed impaired kidney function, increased levels of kidney and serum LCN2, increased bone and serum FGF23, anemia, and left ventricular hypertrophy (LVH). Deletion of Lcn2 in CKD mice did not improve kidney function or anemia but prevented the development of LVH and improved survival in association with marked reductions in serum FGF23. Lcn2 deletion specifically prevented FGF23 elevations in response to inflammation, but not iron deficiency or phosphate, and administration of LCN2 increased serum FGF23 in healthy and CKD mice by stimulating Fgf23 transcription via activation of cAMP-mediated signaling in bone cells. These results show that kidney-produced LCN2 is an important mediator of increased FGF23 production by bone in response to inflammation and in CKD. LCN2 inhibition might represent a potential therapeutic approach to lower FGF23 and improve outcomes in CKD.
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Kovacevic S, Ivanov M, Zivotic M, Brkic P, Miloradovic Z, Jeremic R, Mihailovic-Stanojevic N, Vajic UJ, Karanovic D, Jovovic D, Nesovic Ostojic J. Immunohistochemical Analysis of 4-HNE, NGAL, and HO-1 Tissue Expression after Apocynin Treatment and HBO Preconditioning in Postischemic Acute Kidney Injury Induced in Spontaneously Hypertensive Rats. Antioxidants (Basel) 2021; 10:antiox10081163. [PMID: 34439411 PMCID: PMC8388865 DOI: 10.3390/antiox10081163] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/15/2021] [Accepted: 07/16/2021] [Indexed: 01/07/2023] Open
Abstract
Oxidative stress has been considered as a central aggravating factor in the development of postischemic acute kidney injury (AKI). The aim of this study was to perform the immunohistochemical analysis of 4-hydroxynonenal (4-HNE), neutrophil gelatinase-associated lipocalin (NGAL), and heme oxygenase-1 (HO-1) tissue expression after apocynin (APO) treatment and hyperbaric oxygenation (HBO) preconditioning, applied as single or combined protocol, in postischemic acute kidney injury induced in spontaneously hypertensive rats (SHR). Twenty-four hours before AKI induction, HBO preconditioning was carried out by exposing to pure oxygen (2.026 bar) twice a day, for 60 min in two consecutive days. Acute kidney injury was induced by removal of the right kidney while the left renal artery was occluded for 45 min by atraumatic clamp. Apocynin was applied in a dose of 40 mg/kg body weight, intravenously, 5 min before reperfusion. We showed increased 4-HNE renal expression in postischemic AKI compared to Sham-operated (SHAM) group. Apocynin treatment, with or without HBO preconditioning, improved creatinine and phosphate clearances, in postischemic AKI. This improvement in renal function was accompanied with decreased 4-HNE, while HO-1 kidney expression restored close to the control group level. NGAL renal expression was also decreased after apocynin treatment, and HBO preconditioning, with or without APO treatment. Considering our results, we can say that 4-HNE tissue expression can be used as a marker of oxidative stress in postischemic AKI. On the other hand, apocynin treatment and HBO preconditioning reduced oxidative damage, and this protective effect might be expected even in experimental hypertensive condition.
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Affiliation(s)
- Sanjin Kovacevic
- Department of Pathophysiology, Medical Faculty, University of Belgrade, 11000 Belgrade, Serbia;
| | - Milan Ivanov
- Department of Cardiovascular Physiology, Institute for Medical Research, University of Belgrade, 11129 Belgrade, Serbia; (M.I.); (Z.M.); (N.M.-S.); (U.J.V.); (D.K.); (D.J.)
| | - Maja Zivotic
- Institute of Pathology, Medical Faculty, University of Belgrade, 11000 Belgrade, Serbia;
| | - Predrag Brkic
- Department of Medical Physiology, Medical Faculty, University of Belgrade, 11000 Belgrade, Serbia; (P.B.); (R.J.)
| | - Zoran Miloradovic
- Department of Cardiovascular Physiology, Institute for Medical Research, University of Belgrade, 11129 Belgrade, Serbia; (M.I.); (Z.M.); (N.M.-S.); (U.J.V.); (D.K.); (D.J.)
| | - Rada Jeremic
- Department of Medical Physiology, Medical Faculty, University of Belgrade, 11000 Belgrade, Serbia; (P.B.); (R.J.)
| | - Nevena Mihailovic-Stanojevic
- Department of Cardiovascular Physiology, Institute for Medical Research, University of Belgrade, 11129 Belgrade, Serbia; (M.I.); (Z.M.); (N.M.-S.); (U.J.V.); (D.K.); (D.J.)
| | - Una Jovana Vajic
- Department of Cardiovascular Physiology, Institute for Medical Research, University of Belgrade, 11129 Belgrade, Serbia; (M.I.); (Z.M.); (N.M.-S.); (U.J.V.); (D.K.); (D.J.)
| | - Danijela Karanovic
- Department of Cardiovascular Physiology, Institute for Medical Research, University of Belgrade, 11129 Belgrade, Serbia; (M.I.); (Z.M.); (N.M.-S.); (U.J.V.); (D.K.); (D.J.)
| | - Djurdjica Jovovic
- Department of Cardiovascular Physiology, Institute for Medical Research, University of Belgrade, 11129 Belgrade, Serbia; (M.I.); (Z.M.); (N.M.-S.); (U.J.V.); (D.K.); (D.J.)
| | - Jelena Nesovic Ostojic
- Department of Pathophysiology, Medical Faculty, University of Belgrade, 11000 Belgrade, Serbia;
- Correspondence: ; Tel./Fax: +381-11-2685-340
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das Neves SP, Taipa R, Marques F, Soares Costa P, Monárrez-Espino J, Palha JA, Kivipelto M. Association Between Iron-Related Protein Lipocalin 2 and Cognitive Impairment in Cerebrospinal Fluid and Serum. Front Aging Neurosci 2021; 13:663837. [PMID: 34248600 PMCID: PMC8267056 DOI: 10.3389/fnagi.2021.663837] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 04/30/2021] [Indexed: 11/24/2022] Open
Abstract
A worldwide increase in longevity is bringing novel challenges to public health and health care professionals. Cognitive impairment in the elderly may compromise living conditions and precede Alzheimer’s disease (AD), the most prevalent form of dementia. Therefore, finding molecular markers associated with cognitive impairment is of crucial importance. Lipocalin 2 (LCN2), an iron-related protein, has been suggested as a potential marker for mild cognitive impairment (MCI) and AD. This study aimed at investigating the association between LCN2 measured in serum and cerebrospinal fluid (CSF) with cognitive impairment. A cross-sectional design based on two aging cohorts was used: individuals diagnosed with subjective cognitive complaints (SCC), MCI, and AD from a Swedish memory clinic-based cohort, and individuals diagnosed with SCC and AD from a Portuguese cohort. Binary logistic [for the outcome cognitive impairment (MCI + AD) in the Swedish cohort and AD in the Portuguese cohort] and multinomial logistic (for the outcomes MCI and AD) regression analyses were used. No associations were found in both cohorts when controlling for sex, education, and age. This explanatory study suggests that the association between serum and CSF LCN2 concentrations with cognitive impairment reported in the literature must be further analyzed for confounders.
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Affiliation(s)
- Sofia Pereira das Neves
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Ricardo Taipa
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal.,Department of Neurosciences, Centro Hospitalar do Porto, Porto, Portugal
| | - Fernanda Marques
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Patrício Soares Costa
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Joel Monárrez-Espino
- Department of Health Research, Christus Muguerza Hospital-University of Monterrey, Chihuahua, Mexico
| | - Joana A Palha
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Miia Kivipelto
- Division of Clinical Geriatrics, Center for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden.,Theme Aging, Karolinska University Hospital, Stockholm, Sweden
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11
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Loss of Function of von Hippel-Lindau Trigger Lipocalin 2-Dependent Inflammatory Responses in Cultured and Primary Renal Tubular Cells. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:5571638. [PMID: 34257811 PMCID: PMC8245224 DOI: 10.1155/2021/5571638] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 05/05/2021] [Accepted: 06/03/2021] [Indexed: 01/10/2023]
Abstract
Previous studies have shown that mutations in the tumor suppressor gene von Hippel-Lindau (VHL) can result in the overproduction of reactive oxygen species (ROS) and chronic inflammation and are a significant predisposing factor for the development of clear-cell renal cell carcinoma (ccRCC). To study VHL's role in ccRCC formation, we previously developed a novel conditional knockout mouse model that mimicked the features of kidney inflammation and fibrosis that lead to cyst formation and hyperplasia. However, due to VHL's complex cellular functions, the mechanism of this phenomenon remains unclear. Here, we used the HK-2 cells and mouse primary renal tubule cells (mRTCs) carrying VHL mutations as models to study the effects and underlying molecular mechanisms of ROS accumulation. We also studied the role of lipocalin 2 (LCN2) in regulating macrophage recruitment by HK-2 cells. We measured the level of ROS in HK-2 cells in the presence or absence of LCN2 knockdown and found that the VHL mutation caused ROS overproduction, but an LCN2 knockdown could attenuate the process. VHL was also found to mediate the in vitro and in vivo expression and secretion of LCN2. Thus, VHL likely affects ROS production in an LCN2-dependent manner. Our findings also suggest that LCN2 sensitizes the inflammatory response of HK-2 cells and the chemotactic abilities of macrophage RAW264.7 cells. By demonstrating that the loss of function of von Hippel-Lindau triggers lipocalin 2-dependent inflammatory responses in cultured and primary renal tubular cells, our results offer novel insights into a potential therapeutic approach for interfering with the development of ccRCC.
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Alijani-Ghazyani Z, Sabzevari R, Roushandeh AM, Jahanian-Najafabadi A, Amiri F, Roudkenar MH. Transplantation of Umbilical Cord-Derived Mesenchymal Stem Cells Overexpressing Lipocalin 2 Ameliorates Ischemia-Induced Injury and Reduces Apoptotic Death in a Rat Acute Myocardial Infarction Model. Stem Cell Rev Rep 2021; 16:968-978. [PMID: 32656623 DOI: 10.1007/s12015-020-10007-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Myocardial infarction (MI) is a leading cause of death worldwide and requires development of efficient therapeutic strategies . Mesenchymal stem cells (MSCs) -based therapy of MI has been promising but inefficient due to undesirable microenvironment of the infarct tissue. Hence, the current study was conducted to fortify MSCs against the unfavorable microenvironment of infarct tissue via overexpression of Lipocalin 2 (Lcn2) as a cytoprotective factor. The engineered cells (Lcn2-MSCs) were transplanted to infarcted heart of a rat model of MI. According to our findings, Lcn2 overexpression resulted in increased MSCs survival in the MI tissue (p < 0.05) compared to non-engineered cells. Furthermore, the infusion of Lcn2-MSCs mitigated Left ventricle (LV) remodeling, decreased fibrosis (p < 0.0001), and reduced apoptotic death of the LVs' cells (p < 0.0001) compared to the control. Our findings suggest a potential novel therapeutic strategy for MI, however, further investigations such as safety and efficacy assessments in large animals followed by clinical trials are required.
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Affiliation(s)
- Zahra Alijani-Ghazyani
- Department of Medical Biotechnology, Faculty of Paramedicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Reza Sabzevari
- Department of Medical Biotechnology, Faculty of Paramedicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Amaneh Mohammadi Roushandeh
- Department of Medical Biotechnology, Faculty of Paramedicine, Guilan University of Medical Sciences, Rasht, Iran.,Anatomical Sciences Department, Medicine Faculty, Guilan University of Medical Sciences, Rasht, Iran
| | - Ali Jahanian-Najafabadi
- Department of Pharmaceutical Biotechnology, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Fatemeh Amiri
- Department of Medical Laboratory Science, Paramedicine Faculty, Hamadan University of Medical Science, Hamadan, Iran
| | - Mehryar Habibi Roudkenar
- Cardiovascular Diseases Research Center, Department of Cardiology, Heshmat Hospital, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran.
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13
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Al-ghareebaw AM, Al-Okaily BN, Ibrahim OMS, Mohammed AD. Role of Olive leaves Zinc Oxide Nanoparticles in Alleviating The Molecular and Histological Changes of Kidney in Female Goats-Induced by Gentamicin (Part III). THE IRAQI JOURNAL OF VETERINARY MEDICINE 2020. [DOI: 10.30539/ijvm.v44i(e0).1014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
This study aimed to investigate the protective influence of olive leave extract zinc oxide nanoparticles (OLEZnONPs) complex against gentamicin–induced kidney dysfunctions in goats. Twenty five adult female goats were randomly divided into five equal groups and treated as follows: control group (C) administered sterile distilled water (IM) for 10 days, group G administered 25 mg/kg BW gentamicin (IM) for 7 days, group Z administered 10 ìg/kg BW of OLEZnONPs (IP) for 3 days, group GTZ administered 25 mg/kg BW gentamicin (IM) for 7 days and then 10 ìg/kg BW of OLEZnONPs (IP) for 3 days, group GWZ administered 25 mg/kg BWs gentamicin (IM) and 10 ìg/kg BW of OLEZnONPs (IP) together for first 3 days and then followed by gentamicin only for 4 days. After seven days of the experiment, the gene expression of kidney injury molcule-1(KIM-1) and neutrophil gelatinase-association lipocalin (NGAL) gene expression of kidney tissue were measured. In addition, samples of kidney were obtained for histopathological examination. Gentamicin medication induced a marked elevation in kidney tissue KIM-1 and NGAL gene expression in G and GTZ groups compared to control and other groups. Intraperitoneal treatment of goats with OLEZnONPs did not significantly affect NGAL and KIM-1 gene expression in Z, GWZ, and control groups. Histologically, in contrast to control, gentamicin induced more extensive kidney damages such as necrotized glomeruli, atrophic glomeruli, and renal tubular epithelial necrosis, while it was found that these alterations in kidney tissues wereimproved in goats given OLEZnONPs with gentamicin compared to group G. In conclusion, our results demonstrate that OLEZnONPs reduce the deleterious effects of gentamicin with significantly decreasing of KIM-1 and NGAL gene expression and remodeling the histological changes of kidney in goats.
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14
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Damasceno PKF, de Santana TA, Santos GC, Orge ID, Silva DN, Albuquerque JF, Golinelli G, Grisendi G, Pinelli M, Ribeiro Dos Santos R, Dominici M, Soares MBP. Genetic Engineering as a Strategy to Improve the Therapeutic Efficacy of Mesenchymal Stem/Stromal Cells in Regenerative Medicine. Front Cell Dev Biol 2020; 8:737. [PMID: 32974331 PMCID: PMC7471932 DOI: 10.3389/fcell.2020.00737] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 07/16/2020] [Indexed: 12/14/2022] Open
Abstract
Mesenchymal stem/stromal cells (MSCs) have been widely studied in the field of regenerative medicine for applications in the treatment of several disease settings. The therapeutic potential of MSCs has been evaluated in studies in vitro and in vivo, especially based on their anti-inflammatory and pro-regenerative action, through the secretion of soluble mediators. In many cases, however, insufficient engraftment and limited beneficial effects of MSCs indicate the need of approaches to enhance their survival, migration and therapeutic potential. Genetic engineering emerges as a means to induce the expression of different proteins and soluble factors with a wide range of applications, such as growth factors, cytokines, chemokines, transcription factors, enzymes and microRNAs. Distinct strategies have been applied to induce genetic modifications with the goal to enhance the potential of MCSs. This review aims to contribute to the update of the different genetically engineered tools employed for MSCs modification, as well as the factors investigated in different fields in which genetically engineered MSCs have been tested.
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Affiliation(s)
- Patricia Kauanna Fonseca Damasceno
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (FIOCRUZ), Salvador, Brazil.,Health Institute of Technology, SENAI CIMATEC, Salvador, Brazil
| | | | | | - Iasmim Diniz Orge
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (FIOCRUZ), Salvador, Brazil.,Health Institute of Technology, SENAI CIMATEC, Salvador, Brazil
| | - Daniela Nascimento Silva
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (FIOCRUZ), Salvador, Brazil.,Health Institute of Technology, SENAI CIMATEC, Salvador, Brazil
| | | | - Giulia Golinelli
- Division of Oncology, Laboratory of Cellular Therapy, University of Modena and Reggio Emilia, Modena, Italy
| | - Giulia Grisendi
- Division of Oncology, Laboratory of Cellular Therapy, University of Modena and Reggio Emilia, Modena, Italy
| | - Massimo Pinelli
- Division of Plastic Surgery, Department of Medical and Surgical Sciences for Children & Adults, University of Modena and Reggio Emilia, Modena, Italy
| | - Ricardo Ribeiro Dos Santos
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (FIOCRUZ), Salvador, Brazil.,Health Institute of Technology, SENAI CIMATEC, Salvador, Brazil.,National Institute of Science and Technology for Regenerative Medicine (INCT-REGENERA), Rio de Janeiro, Brazil
| | - Massimo Dominici
- Division of Oncology, Laboratory of Cellular Therapy, University of Modena and Reggio Emilia, Modena, Italy
| | - Milena Botelho Pereira Soares
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (FIOCRUZ), Salvador, Brazil.,Health Institute of Technology, SENAI CIMATEC, Salvador, Brazil.,National Institute of Science and Technology for Regenerative Medicine (INCT-REGENERA), Rio de Janeiro, Brazil
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15
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Panahi M, Rahimi B, Rahimi G, Yew Low T, Saraygord-Afshari N, Alizadeh E. Cytoprotective effects of antioxidant supplementation on mesenchymal stem cell therapy. J Cell Physiol 2020; 235:6462-6495. [PMID: 32239727 DOI: 10.1002/jcp.29660] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 02/15/2020] [Indexed: 12/11/2022]
Abstract
Mesenchymal stem cells (MSCs) are earmarked as perfect candidates for cell therapy and tissue engineering due to their capacity to differentiate into different cell types. However, their potential for application in regenerative medicine declines when the levels of the reactive oxygen and nitrogen species (RONS) increase from the physiological levels, a phenomenon which is at least inevitable in ex vivo cultures and air-exposed damaged tissues. Increased levels of RONS can alter the patterns of osteogenic and adipogenic differentiation and inhibit proliferation, as well. Besides, oxidative stress enhances senescence and cell death, thus lowering the success rates of the MSC engraftment. Hence, in this review, we have selected some representatives of antioxidants and newly emerged nano antioxidants in three main categories, including chemical compounds, biometabolites, and protein precursors/proteins, which are proved to be effective in the treatment of MSCs. We will focus on how antioxidants can be applied to optimize the clinical usage of the MSCs and their associated signaling pathways. We have also reviewed several paralleled properties of some antioxidants and nano antioxidants which can be simultaneously used in real-time imaging, scaffolding techniques, and other applications in addition to their primary antioxidative function.
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Affiliation(s)
- Mohammad Panahi
- Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Bahareh Rahimi
- Department of Medical Biotechnology, Faculty of Allied Medical Sciences, Iran University of Medical Sciences, Tehran, Iran
| | - Golbarg Rahimi
- Department of Cellular and Molecular Biology, University of Esfahan, Esfahan, Iran
| | - Teck Yew Low
- UKM Medical Molecular Biology Institute (UMBI), Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Neda Saraygord-Afshari
- Department of Medical Biotechnology, Faculty of Allied Medical Sciences, Iran University of Medical Sciences, Tehran, Iran
| | - Effat Alizadeh
- Drug Applied Research Center and Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
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16
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Kim S, Baek J, Park S, Choi EK, Baek SH, Choi JH, Lee CH, Sung EG, Kim KJ, Jee D. Effects of Blood Transfusion on Hepatic Ischemia-Reperfusion Injury-Induced Renal Tubular Injury. EXP CLIN TRANSPLANT 2020; 18:19-26. [DOI: 10.6002/ect.2019.0056] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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17
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Implication and role of neutrophil gelatinase-associated lipocalin in cancer: lipocalin-2 as a potential novel emerging comprehensive therapeutic target for a variety of cancer types. Mol Biol Rep 2020; 47:2327-2346. [PMID: 31970626 DOI: 10.1007/s11033-020-05261-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 01/16/2020] [Indexed: 12/18/2022]
Abstract
Cancer is a leading cause of mortalities worldwide. Over the past few decades, exploration of molecular mechanisms behind cancer initiation and progression has been of great interest in the viewpoint of both basic and clinical scientists. It is generally believed that identification of key molecules implicated in cancer pathology not only improves our understanding of the disease, but also could result in introduction of novel therapeutic strategies. Neutrophil gelatinase-associated lipocalin (NGAL)/lipocalin-2 (LCN2) is a member of lipocalin superfamily with a variety of functions. Although the main function of LCN2 is still unknown, many studies confirmed its significant role in the initiation, progression, and metastasis of various types of cancer. Furthermore, aberrant expression of LCN2 is also concerned with the chemo- and radio-resistant phenotypes of tumors. Here, we will review the contribution of known functions of LCN2 to the pathophysiology of cancer. We also highlight how the deregulated expression of LCN2 is associated with a variety of fatal types of cancer for which there are no effective therapeutic modalities. The unique and multiple functions of LCN2 and its widespread expression in different types of cancer prompted us to suggest LCN2 could be considered either as a valuable diagnostic and prognostic biomarker or as a potential novel therapeutic target.
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18
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Rahimi S, Roushandeh AM, Ebrahimi A, Samadani AA, Kuwahara Y, Roudkenar MH. CRISPR/Cas9-mediated knockout of Lcn2 effectively enhanced CDDP-induced apoptosis and reduced cell migration capacity of PC3 cells. Life Sci 2019; 231:116586. [DOI: 10.1016/j.lfs.2019.116586] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 06/02/2019] [Accepted: 06/17/2019] [Indexed: 01/21/2023]
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19
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Hong X, Yan H, Xie F, Wang K, Wang Q, Huang H, Yang K, Huang S, Zhao T, Wang J, Chen Y, Liu K, Lan X. Development of a novel ssDNA aptamer targeting neutrophil gelatinase-associated lipocalin and its application in clinical trials. J Transl Med 2019; 17:204. [PMID: 31215436 PMCID: PMC6582607 DOI: 10.1186/s12967-019-1955-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 06/13/2019] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Neutrophil gelatinase-associated lipocalin (NGAL) is a promising biomarker of early diagnosis and prediction for acute kidney injury (AKI). However, the current program for NGAL detection is not extensively applied in clinics due to the high expense of antibodies. Nucleic acid aptamers are single-strand DNAs or RNAs which could bind to targets with high specificity and affinity, and they have been widely used in the diagnosis and therapy for multiple diseases. It is valuable for us to develop a new method for NGAL detection using aptamers instead of antibodies to achieve increased efficiency and decreased cost. METHODS Nucleic acid aptamers against NGAL were obtained after SELEX process using magnetic beads, and an enzyme-linked aptamer analysis (ELAA), which can be widely used in clinical diagnosis at low cost, were successfully established. The feasibility of ELAA was further validated with urine samples harvested from 43 AKI patients and 30 healthy people. RESULTS Three candidate aptamers, including NA36, NA42 and NA53, were obtained after 8 rounds of SELEX process with magnetic beads and verified by quantitative polymerase chain reaction (qPCR), and the Kd value of each aptamer was 43.59, 66.55 and 32.52 nM, respectively. Moreover, the linear relationship was consistent at the range of 125-4000 ng/mL, and the detection limit of ELAA assay was 30.45 ng/mL. We also found that NGAL could be exclusively detected with NA53, and no cross-reaction between NA53 and human albumin or globulin occurred, the coefficient of variation (CV) between inner-plate and inter-plate was less than 15%, and the recovery rate was between 80 and 110%. Moreover, the sensitivity and specificity of ELAA assay in this study are 100% and 90%, respectively. Consistently, these results could also diagnose whether the occurrence of AKI in lots of patients, which has been demonstrated with the ELAA method we established after using NA53. CONCLUSIONS Taken together, NA53, the best candidate aptamer targeting NGAL protein, can be applied in clinical testing.
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Affiliation(s)
- Xiaoqian Hong
- Institute for Laboratory Medicine, 900 Hospital of the Joint Logistics Team, Navy Medical University (Second Military Medical University) or Dongfang Hospital, Fuzhou, 350025, Fujian, China.,Department of Laboratory Medicine, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361102, Fujian, China
| | - Huihui Yan
- Institute for Laboratory Medicine, 900 Hospital of the Joint Logistics Team, Navy Medical University (Second Military Medical University) or Dongfang Hospital, Fuzhou, 350025, Fujian, China
| | - Fuan Xie
- Institute for Laboratory Medicine, 900 Hospital of the Joint Logistics Team, Navy Medical University (Second Military Medical University) or Dongfang Hospital, Fuzhou, 350025, Fujian, China
| | - Kaiyu Wang
- Institute for Laboratory Medicine, 900 Hospital of the Joint Logistics Team, Navy Medical University (Second Military Medical University) or Dongfang Hospital, Fuzhou, 350025, Fujian, China
| | - Qiang Wang
- Department of Nephrology, 900 Hospital of the Joint Logistics Team, Fuzhou, 350025, Fujian, China
| | - Huijuan Huang
- Department of Gynaecology and Obstetrics, 900 Hospital of the Joint Logistics Team or Dongfang Hospital, Fuzhou, 350025, Fujian, China
| | - Kunrong Yang
- Institute for Laboratory Medicine, 900 Hospital of the Joint Logistics Team, Navy Medical University (Second Military Medical University) or Dongfang Hospital, Fuzhou, 350025, Fujian, China.,Fujian Medical University, Fuzhou, 350025, Fujian, China
| | - Suhong Huang
- Department of Laboratory Medicine, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361102, Fujian, China
| | - Tingting Zhao
- Institute for Laboratory Medicine, 900 Hospital of the Joint Logistics Team, Navy Medical University (Second Military Medical University) or Dongfang Hospital, Fuzhou, 350025, Fujian, China.,School of Medicine, Xiamen University, Xiamen, 361102, Fujian, China
| | - Junkai Wang
- School of Life Science, Xiamen University, Xiamen, 361102, Fujian, China
| | - Yunyun Chen
- Institute for Laboratory Medicine, 900 Hospital of the Joint Logistics Team, Navy Medical University (Second Military Medical University) or Dongfang Hospital, Fuzhou, 350025, Fujian, China.,School of Medicine, Xiamen University, Xiamen, 361102, Fujian, China
| | - Kuancan Liu
- Institute for Laboratory Medicine, 900 Hospital of the Joint Logistics Team, Navy Medical University (Second Military Medical University) or Dongfang Hospital, Fuzhou, 350025, Fujian, China. .,School of Medicine, Xiamen University, Xiamen, 361102, Fujian, China. .,Fujian Medical University, Fuzhou, 350025, Fujian, China.
| | - Xiaopeng Lan
- Institute for Laboratory Medicine, 900 Hospital of the Joint Logistics Team, Navy Medical University (Second Military Medical University) or Dongfang Hospital, Fuzhou, 350025, Fujian, China.
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20
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Protective effect and mechanisms of exogenous neutrophil gelatinase-associated lipocalin on lipopolysaccharide-induced injury of renal tubular epithelial cell. Biochem Biophys Res Commun 2019; 515:104-111. [PMID: 31128916 DOI: 10.1016/j.bbrc.2019.05.102] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 05/07/2019] [Accepted: 05/14/2019] [Indexed: 11/23/2022]
Abstract
PURPOSES To investigate the protective effect of exogenous neutrophil gelatinase-associated lipocalin (NGAL) on the lipopolysaccharide-induced injury of renal tubular epithelial cells and its regulation of autophagy. METHODS Renal tubular epithelial cells were treated with lipopolysaccharide (LPS) at different concentrations (0-100 μg/mL) and at different times (0-24 h), the expression of NGAL was detected to determine the optimal time and concentration of LPS treatment. The NGAL gene knockdown lentivirus (NGAL-RNAi) was constructed and verified its knockdown rate and inhibition effect. Renal tubular epithelial cells were randomly divided into Control group, LPS group, LPS + NGAL group, NGAL-RNAi + LPS group, and NGAL-RNAi + LPS + NGAL group. Western blot and immunofluorescence tested the expression of autophagy-associated proteins, the changes in the number of autophagosomes were observed by electron microscopy, analyzed the role of exogenous NGAL. RESULTS The study showed the expression of autophagy-associated proteins (LC3-II and Beclin-1) in NGAL-RNAi + LPS group was significantly lower than the LPS group (P < 0.0100). The expression of LC3-II and Beclin-1 in the NGAL-RNAi + LPS + NGAL group was significantly higher than the NGAL-RNAi + LPS group (P < 0.0100). After the addition of exogenous NGAL, the autophagosomes in the LPS + NGAL group and the NGAL-RNAi + LPS + NGAL group were significantly increased under the electron microscope compared with the LPS group and the NGAL-RNAi + LPS group, and the cell proliferation rate and cell viability was significantly higher than unjoined groups (P < 0.0500). CONCLUSION NGAL knockdown can significantly reduce the level of autophagy and decrease the proliferation rate and viability of cells.The addition of exogenous NGAL can increase the level of autophagy. This suggests that NGAL may play a protective role in the LPS-induced injury of renal tubular epithelial cells by promoting autophagy.
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21
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Saad A, Herrmann SMS, Eirin A, Ferguson CM, Glockner JF, Bjarnason H, McKusick MA, Misra S, Lerman LO, Textor SC. Phase 2a Clinical Trial of Mitochondrial Protection (Elamipretide) During Stent Revascularization in Patients With Atherosclerotic Renal Artery Stenosis. Circ Cardiovasc Interv 2018; 10:CIRCINTERVENTIONS.117.005487. [PMID: 28916603 DOI: 10.1161/circinterventions.117.005487] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Accepted: 07/24/2017] [Indexed: 01/08/2023]
Abstract
BACKGROUND Atherosclerotic renal artery stenosis reduces renal blood flow (RBF) and amplifies stenotic kidney hypoxia. Revascularization with percutaneous transluminal renal angioplasty (PTRA) and stenting often fails to recover renal function, possibly because of ischemia/reperfusion injury developing after PTRA. Elamipretide is a mitochondrial-targeted peptide that binds to cardiolipin and stabilizes mitochondrial function. We tested the hypothesis that elamipretide plus PTRA would improve renal function, oxygenation, and RBF in patients with atherosclerotic renal artery stenosis undergoing PTRA. METHODS AND RESULTS Inpatient studies were performed in patients with severe atherosclerotic renal artery stenosis scheduled for PTRA. Patients were treated before and during PTRA with elamipretide (0.05 mg/kg per hour intravenous infusion, n=6) or placebo (n=8). Stenotic kidney cortical/medullary perfusion and RBF were measured using contrast-enhanced multidetector CT, and renal oxygenation by 3-T blood oxygen level-dependent magnetic resonance imaging before and 3 months after PTRA. Age and basal glomerular filtration rate did not differ between groups. Blood oxygen level-dependent imaging demonstrated increased fractional hypoxia 24 hours after angiography and stenting in placebo (+47%) versus elamipretide (-6%). These were reverted to baseline 3 months later. Stenotic kidney RBF rose (202±29-262±115 mL/min; P=0.04) 3 months after PTRA in the elamipretide-treated group only. Over 3 months, systolic blood pressure decreased, and estimated glomerular filtration rate increased (P=0.003) more in the elamipretide group than in the placebo group (P=0.11). CONCLUSIONS Adjunctive elamipretide during PTRA was associated with attenuated postprocedural hypoxia, increased RBF, and improved kidney function in this pilot trial. These data support a role for targeted mitochondrial protection to minimize procedure-associated ischemic injury and to improve outcomes of revascularization for human atherosclerotic renal artery stenosis. CLINICAL TRIAL REGISTRATION URL: https://www.clinicaltrials.gov. Unique identifier: NCT01755858.
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Affiliation(s)
- Ahmed Saad
- From the Division of Nephrology and Hypertension (A.S., S.M.S.H., A.E., C.M.F., L.O.L., S.C.T.) and Department of Radiology (J.F.G., H.B., M.A.M., S.M.), Mayo Clinic, Rochester, MN
| | - Sandra M S Herrmann
- From the Division of Nephrology and Hypertension (A.S., S.M.S.H., A.E., C.M.F., L.O.L., S.C.T.) and Department of Radiology (J.F.G., H.B., M.A.M., S.M.), Mayo Clinic, Rochester, MN
| | - Alfonso Eirin
- From the Division of Nephrology and Hypertension (A.S., S.M.S.H., A.E., C.M.F., L.O.L., S.C.T.) and Department of Radiology (J.F.G., H.B., M.A.M., S.M.), Mayo Clinic, Rochester, MN
| | - Christopher M Ferguson
- From the Division of Nephrology and Hypertension (A.S., S.M.S.H., A.E., C.M.F., L.O.L., S.C.T.) and Department of Radiology (J.F.G., H.B., M.A.M., S.M.), Mayo Clinic, Rochester, MN
| | - James F Glockner
- From the Division of Nephrology and Hypertension (A.S., S.M.S.H., A.E., C.M.F., L.O.L., S.C.T.) and Department of Radiology (J.F.G., H.B., M.A.M., S.M.), Mayo Clinic, Rochester, MN
| | - Haraldur Bjarnason
- From the Division of Nephrology and Hypertension (A.S., S.M.S.H., A.E., C.M.F., L.O.L., S.C.T.) and Department of Radiology (J.F.G., H.B., M.A.M., S.M.), Mayo Clinic, Rochester, MN
| | - Michael A McKusick
- From the Division of Nephrology and Hypertension (A.S., S.M.S.H., A.E., C.M.F., L.O.L., S.C.T.) and Department of Radiology (J.F.G., H.B., M.A.M., S.M.), Mayo Clinic, Rochester, MN
| | - Sanjay Misra
- From the Division of Nephrology and Hypertension (A.S., S.M.S.H., A.E., C.M.F., L.O.L., S.C.T.) and Department of Radiology (J.F.G., H.B., M.A.M., S.M.), Mayo Clinic, Rochester, MN
| | - Lilach O Lerman
- From the Division of Nephrology and Hypertension (A.S., S.M.S.H., A.E., C.M.F., L.O.L., S.C.T.) and Department of Radiology (J.F.G., H.B., M.A.M., S.M.), Mayo Clinic, Rochester, MN
| | - Stephen C Textor
- From the Division of Nephrology and Hypertension (A.S., S.M.S.H., A.E., C.M.F., L.O.L., S.C.T.) and Department of Radiology (J.F.G., H.B., M.A.M., S.M.), Mayo Clinic, Rochester, MN.
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Parmar T, Parmar VM, Perusek L, Georges A, Takahashi M, Crabb JW, Maeda A. Lipocalin 2 Plays an Important Role in Regulating Inflammation in Retinal Degeneration. THE JOURNAL OF IMMUNOLOGY 2018; 200:3128-3141. [PMID: 29602770 DOI: 10.4049/jimmunol.1701573] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 03/05/2018] [Indexed: 12/17/2022]
Abstract
It has become increasingly important to understand how retinal inflammation is regulated because inflammation plays a role in retinal degenerative diseases. Lipocalin 2 (LCN2), an acute stress response protein with multiple innate immune functions, is increased in ATP-binding cassette subfamily A member 4 (Abca4) -/- retinol dehydrogenase 8 (Rdh8) -/- double-knockout mice, an animal model for Stargardt disease and age-related macular degeneration (AMD). To examine roles of LCN2 in retinal inflammation and degeneration, Lcn2-/-Abca4-/-Rdh8-/- triple-knockout mice were generated. Exacerbated inflammation following light exposure was observed in Lcn2-/-Abca4-/-Rdh8-/- mice as compared with Abca4-/-Rdh8-/- mice, with upregulation of proinflammatory genes and microglial activation. RNA array analyses revealed an increase in immune response molecules such as Ccl8, Ccl2, and Cxcl10 To further probe a possible regulatory role for LCN2 in retinal inflammation, we examined the in vitro effects of LCN2 on NF-κB signaling in human retinal pigmented epithelial (RPE) cells differentiated from induced pluripotent stem cells derived from healthy donors. We found that LCN2 induced expression of antioxidant enzymes heme oxygenase 1 and superoxide dismutase 2 in these RPE cells and could inhibit the cytotoxic effects of H2O2 and LPS. ELISA revealed increased LCN2 levels in plasma of patients with Stargardt disease, retinitis pigmentosa, and age-related macular degeneration as compared with healthy controls. Finally, overexpression of LCN2 in RPE cells displayed protection from cell death. Overall these results suggest that LCN2 is involved in prosurvival responses during cell stress and plays an important role in regulating inflammation during retinal degeneration.
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Affiliation(s)
- Tanu Parmar
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, Cleveland, OH 44106
| | - Vipul M Parmar
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, Cleveland, OH 44106
| | - Lindsay Perusek
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, Cleveland, OH 44106
| | - Anouk Georges
- Laboratory for Retinal Regeneration, RIKEN Center for Developmental Biology, Kobe, Hyogo 650-0047, Japan
| | - Masayo Takahashi
- Laboratory for Retinal Regeneration, RIKEN Center for Developmental Biology, Kobe, Hyogo 650-0047, Japan
| | - John W Crabb
- Cole Eye Institute, Cleveland Clinic, OH 44195; and
| | - Akiko Maeda
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, Cleveland, OH 44106; .,Laboratory for Retinal Regeneration, RIKEN Center for Developmental Biology, Kobe, Hyogo 650-0047, Japan.,Department of Pharmacology, Case Western Reserve University, Cleveland, OH 44106
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Pavlakou P, Liakopoulos V, Eleftheriadis T, Mitsis M, Dounousi E. Oxidative Stress and Acute Kidney Injury in Critical Illness: Pathophysiologic Mechanisms-Biomarkers-Interventions, and Future Perspectives. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:6193694. [PMID: 29104728 PMCID: PMC5637835 DOI: 10.1155/2017/6193694] [Citation(s) in RCA: 95] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 08/09/2017] [Accepted: 08/20/2017] [Indexed: 01/22/2023]
Abstract
Acute kidney injury (AKI) is a multifactorial entity that occurs in a variety of clinical settings. Although AKI is not a usual reason for intensive care unit (ICU) admission, it often complicates critically ill patients' clinical course requiring renal replacement therapy progressing sometimes to end-stage renal disease and increasing mortality. The causes of AKI in the group of ICU patients are further complicated from damaged metabolic state, systemic inflammation, sepsis, and hemodynamic dysregulations, leading to an imbalance that generates oxidative stress response. Abundant experimental and to a less extent clinical data support the important role of oxidative stress-related mechanisms in the injury phase of AKI. The purpose of this article is to present the main pathophysiologic mechanisms of AKI in ICU patients focusing on the different aspects of oxidative stress generation, the available evidence of interventional measures for AKI prevention, biomarkers used in a clinical setting, and future perspectives in oxidative stress regulation.
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Affiliation(s)
- Paraskevi Pavlakou
- Department of Nephrology, Medical School University of Ioannina, Ioannina, Greece
| | - Vassilios Liakopoulos
- Division of nephrology and Hypertension, 1st Department of Internal Medicine, AHEPA Hospital, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | | | - Michael Mitsis
- Department of Surgery, Medical School University of Ioannina, Ioannina, Greece
| | - Evangelia Dounousi
- Department of Nephrology, Medical School University of Ioannina, Ioannina, Greece
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Roushandeh AM, Bahadori M, Roudkenar MH. Mesenchymal Stem Cell-based Therapy as a New Horizon for Kidney Injuries. Arch Med Res 2017. [PMID: 28625316 DOI: 10.1016/j.arcmed.2017.03.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Today, the prevalence of kidney diseases is increasing around the world, but there has still been no effective medical treatment. The therapeutic choices are confined to supportive cares and preventive strategies. Currently, mesenchymal stem cells (MSCs)-based cell therapy was proposed for the treatment of kidney injuries. However, after the transplantation of MSCs, they are exposed to masses of cytotoxic factors involving an inflammatory cytokine storm, a nutritionally-poor hypoxic environment and oxidative stresses that finally lead to minimize the efficacy of MSCs based cell therapy. Therefore, several innovative strategies were developed in order to potentiate MSCs to withstand the unfavorable microenvironments of the injured kidney tissues and improve their therapeutic potentials. This review aims to introduce MSCs as a new modality in the treatment of renal failure. Here, we discuss the clinical trials of MSCs-based therapy in kidney diseases as well as the in vivo studies dealing with MSCs application in kidney injuries mainly from the proliferation, differentiation, migration and survival points of view. The obstacles and challenges of this new modality in kidney injuries are also discussed.
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Affiliation(s)
| | - Marzie Bahadori
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
| | - Mehryar Habibi Roudkenar
- Medical Biotechnology Research Center, Paramedicine Faculty, Guilan University of Medical Sciences Rasht, Iran.
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Ma Q, Devarajan SR, Devarajan P. Amelioration of cisplatin-induced acute kidney injury by recombinant neutrophil gelatinase-associated lipocalin. Ren Fail 2016; 38:1476-1482. [PMID: 27605163 DOI: 10.1080/0886022x.2016.1227917] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
We investigated the protective effect and mechanism of neutrophil gelatinase-associated lipocalin (NGAL) in a murine model of cisplatin-induced nephrotoxicity. Male Swiss-Webster mice were assigned to four groups (n = 10 in each group). Control mice received vehicle only. Mice in the experimental group were given a single intraperitoneal injection of cisplatin (20 mg/kg) to induce nephrotoxicity, and were divided into three groups. The first group received 100 μL of saline only via tail vein at the time of cisplatin administration. The second group was given biologically active recombinant NGAL via tail vein (250 μg/100 μL solution). The third group was injected with a 250 μg/100μL solution of inactivated NGAL. After 4 days, we measured serum creatinine and urinary N-acetyl-β-d-glucosaminidase (NAG), and performed histologic studies. Biologically active NGAL significantly blunted the rise in serum creatinine (NGAL plus cisplatin 1.33 ± 0.31 versus cisplatin alone 2.43 ± 0.31 mg/dL, p < .001) as well as the increase in urine NAG (NGAL plus cisplatin 60.7 ± 14.2 versus cisplatin alone 120.5 ± 22.5 units/gm creatinine, p < .005). In addition, NGAL conferred a marked reduction in tubule cell necrosis and apoptosis (NGAL plus cisplatin 6.9 ± 1.2 versus cisplatin alone 15.1 ± 3.4 TUNEL positive nuclei per 100 cells, p < .001). These beneficial effects were completely abolished when heat-inactivated NGAL was administered instead of the biologically active form. Since induction of NGAL in kidney tubules is a known physiologic response to cisplatin, the pharmacologic use of NGAL to prevent cisplatin nephrotoxicity is likely to be safe and effective.
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Affiliation(s)
- Qing Ma
- a Department of Nephrology and Hypertension , Cincinnati Children's Hospital Medical Center , Cincinnati , OH , USA
| | - Shiva R Devarajan
- a Department of Nephrology and Hypertension , Cincinnati Children's Hospital Medical Center , Cincinnati , OH , USA
| | - Prasad Devarajan
- a Department of Nephrology and Hypertension , Cincinnati Children's Hospital Medical Center , Cincinnati , OH , USA
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Saad A, Wang W, Herrmann SMS, Glockner JF, Mckusick MA, Misra S, Bjarnason H, Lerman LO, Textor SC. Atherosclerotic renal artery stenosis is associated with elevated cell cycle arrest markers related to reduced renal blood flow and postcontrast hypoxia. Nephrol Dial Transplant 2016; 31:1855-1863. [PMID: 27474749 DOI: 10.1093/ndt/gfw265] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Accepted: 06/04/2016] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Atherosclerotic renal artery stenosis (ARAS) reduces renal blood flow (RBF), ultimately leading to kidney hypoxia and inflammation. Insulin-like growth factor binding protein-7 (IGFBP-7) and tissue inhibitor of metalloproteinases-2 (TIMP-2) are biomarkers of cell cycle arrest, often increased in ischemic conditions and predictive of acute kidney injury (AKI). This study sought to examine the relationships between renal vein levels of IGFBP-7, TIMP-2, reductions in RBF and postcontrast hypoxia as measured by blood oxygen level-dependent (BOLD) magnetic resonance imaging. METHODS Renal vein levels of IGFBP-7 and TIMP-2 were obtained in an ARAS cohort (n= 29) scheduled for renal artery stenting and essential hypertensive (EH) healthy controls (n = 32). Cortical and medullary RBFs were measured by multidetector computed tomography (CT) immediately before renal artery stenting and 3 months later. BOLD imaging was performed before and 3 months after stenting in all patients, and a subgroup (N = 12) underwent repeat BOLD imaging 24 h after CT/stenting to examine postcontrast/procedure levels of hypoxia. RESULTS Preintervention IGFBP-7 and TIMP-2 levels were elevated in ARAS compared with EH (18.5 ± 2.0 versus 15.7 ± 1.5 and 97.4 ± 23.1 versus 62.7 ± 9.2 ng/mL, respectively; P< 0.0001); baseline IGFBP-7 correlated inversely with hypoxia developing 24 h after contrast injection (r = -0.73, P< 0.0001) and with prestent cortical blood flow (r = -0.59, P= 0.004). CONCLUSION These data demonstrate elevated IGFBP-7 and TIMP-2 levels in ARAS as a function of the degree of reduced RBF. Elevated baseline IGFBP-7 levels were associated with protection against postimaging hypoxia, consistent with 'ischemic preconditioning'. Despite contrast injection and stenting, AKI in these high-risk ARAS subjects with elevated IGFBP-7/TIMP-2 was rare and did not affect long-term kidney function.
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Affiliation(s)
- Ahmed Saad
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA
| | - Wei Wang
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA
| | | | - James F Glockner
- Department of Interventional Radiology, Mayo Clinic, Rochester, MN, USA
| | | | - Sanjay Misra
- Department of Interventional Radiology, Mayo Clinic, Rochester, MN, USA
| | | | - Lilach O Lerman
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA
| | - Stephen C Textor
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA
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Dá Mesquita S, Ferreira AC, Sousa JC, Correia-Neves M, Sousa N, Marques F. Insights on the pathophysiology of Alzheimer's disease: The crosstalk between amyloid pathology, neuroinflammation and the peripheral immune system. Neurosci Biobehav Rev 2016; 68:547-562. [PMID: 27328788 DOI: 10.1016/j.neubiorev.2016.06.014] [Citation(s) in RCA: 105] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Revised: 06/09/2016] [Accepted: 06/14/2016] [Indexed: 12/19/2022]
Abstract
Alzheimer's disease (AD) is the most common form of dementia, whose prevalence is growing along with the increased life expectancy. Although the accumulation and deposition of amyloid beta (Aβ) peptides in the brain is viewed as one of the pathological hallmarks of AD and underlies, at least in part, brain cell dysfunction and behavior alterations, the etiology of this neurodegenerative disease is still poorly understood. Noticeably, increased amyloid load is accompanied by marked inflammatory alterations, both at the level of the brain parenchyma and at the barriers of the brain. However, it is debatable whether the neuroinflammation observed in aging and in AD, together with alterations in the peripheral immune system, are responsible for increased amyloidogenesis, decreased clearance of Aβ out of the brain and/or the marked deficits in memory and cognition manifested by AD patients. Herein, we scrutinize some important traits of the pathophysiology of aging and AD, focusing on the interplay between the amyloidogenic pathway, neuroinflammation and the peripheral immune system.
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Affiliation(s)
- Sandro Dá Mesquita
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga, Guimaraes, Portugal
| | - Ana Catarina Ferreira
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga, Guimaraes, Portugal
| | - João Carlos Sousa
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga, Guimaraes, Portugal
| | - Margarida Correia-Neves
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga, Guimaraes, Portugal
| | - Nuno Sousa
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga, Guimaraes, Portugal
| | - Fernanda Marques
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga, Guimaraes, Portugal.
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Xiao X, Yeoh BS, Saha P, Olvera RA, Singh V, Vijay-Kumar M. Lipocalin 2 alleviates iron toxicity by facilitating hypoferremia of inflammation and limiting catalytic iron generation. Biometals 2016; 29:451-65. [PMID: 27007712 PMCID: PMC4880510 DOI: 10.1007/s10534-016-9925-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Accepted: 03/15/2016] [Indexed: 12/21/2022]
Abstract
Iron is an essential transition metal ion for virtually all aerobic organisms, yet its dysregulation (iron overload or anemia) is a harbinger of many pathologic conditions. Hence, iron homeostasis is tightly regulated to prevent the generation of catalytic iron (CI) which can damage cellular biomolecules. In this study, we investigated the role of iron-binding/trafficking innate immune protein, lipocalin 2 (Lcn2, aka siderocalin) on iron and CI homeostasis using Lcn2 knockout (KO) mice and their WT littermates. Administration of iron either systemically or via dietary intake strikingly upregulated Lcn2 in the serum, urine, feces, and liver of WT mice. However, similarly-treated Lcn2KO mice displayed elevated CI, augmented lipid peroxidation and other indices of organ damage markers, implicating that Lcn2 responses may be protective against iron-induced toxicity. Herein, we also show a negative association between serum Lcn2 and CI in the murine model of dextran sodium sulfate (DSS)-induced colitis. The inability of DSS-treated Lcn2KO mice to elicit hypoferremic response to acute colitis, implicates the involvement of Lcn2 in iron homeostasis during inflammation. Using bone marrow chimeras, we further show that Lcn2 derived from both immune and non-immune cells participates in CI regulation. Remarkably, exogenous rec-Lcn2 supplementation suppressed CI levels in Lcn2KO serum and urine. Collectively, our results suggest that Lcn2 may facilitate hypoferremia, suppress CI generation and prevent iron-mediated adverse effects.
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Affiliation(s)
- Xia Xiao
- Department of Nutritional Sciences, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Beng San Yeoh
- Department of Nutritional Sciences, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Piu Saha
- Department of Nutritional Sciences, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Rodrigo Aguilera Olvera
- Department of Nutritional Sciences, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Vishal Singh
- Department of Nutritional Sciences, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Matam Vijay-Kumar
- Department of Nutritional Sciences, The Pennsylvania State University, University Park, PA, 16802, USA.
- Department of Medicine, The Pennsylvania State University Medical Center, Hershey, PA, 17033, USA.
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Zhao S, Wei Y, Xu D. Neutrophil gelatinase-associated lipocalin attenuates injury in the rat cecal ligation and puncture model of sepsis via apoptosis inhibition. Nephrology (Carlton) 2016; 20:646-53. [PMID: 25943501 DOI: 10.1111/nep.12498] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/28/2015] [Indexed: 11/28/2022]
Abstract
AIM The aim of this study was to investigate the effect of neutrophil gelatinase-associated lipocalin (NGAL) on the rat cecal ligation and puncture (CLP)-induced sepsis and the possible mechanism. METHODS Thirty male Sprague-Dawley rats underwent CLP as sepsis models and were randomized into three groups including the sham-operated group (sham, n = 10), which only underwent a laparotomy; the sepsis group (sepsis, n = 10), which underwent CLP and subcutaneous injection of normal saline; and the sepsis + NGAL group (sepsis + NGAL, n = 10), which underwent CLP and subcutaneous injection of NGAL. Urine, blood and kidney tissue samples were collected for the determination of urine NGAL (uNGAL), plasma NGAL (pNGAL), serum creatinine (Scr), blood urea nitrogen (BUN), histomorphological and immunohistochemical examination, lipid peroxidation product malondialdehyde (MDA) and superoxide dismutase (SOD), and expression of heme oxygenase-1 (HO)-1. RESULTS The levels of uNGAL, pNGAL, Scr, BUN, kidney injury score, positive TUNEL staining, activated Caspase-3 and Bax, and kidney tissue MDA levels in the sepsis group were significantly increased compared with those in the sham-operated group and the sepsis + NGAL group (P < 0.05). SOD level and HO-1 expression in sepsis + NGAL group were significantly higher than those in the sham-operated group and the sepsis group (P < 0.05). CONCLUSION NGAL can attenuate kidney injury and apoptosis in the rat CLP model of sepsis. And the protective effect of NGAL was probably due to the inhibition of apoptosis and lipid peroxidation, and increased expression of HO-1.
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Affiliation(s)
- Shuangping Zhao
- Department of Critical Care Medicine, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yangjing Wei
- Department of Critical Care Medicine, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Daomiao Xu
- Department of Critical Care Medicine, Xiangya Hospital, Central South University, Changsha, Hunan, China
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Aghanasir F, Aghaei H, Imani Fooladi AA, Ebrahimi M, Bagherpour G, Nourani MR. Expression of neutrophil gelatinase-associated lipocalin (NGAL) in peripheral nerve repair. J Recept Signal Transduct Res 2016; 36:429-34. [PMID: 27087673 DOI: 10.3109/10799893.2015.1132238] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
INTRODUCTION Trauma is one of the causes of peripheral nerve injuries. Free radicals increase after tissue damage. Free radicals are usually scavenged and detoxified by antioxidants. In this study, we assessed the antioxidative role of the NGAL molecule in sciatic nerve repair in rats. MATERIALS AND METHODS The sciatic nerves of 40 rats were crushed and the total mRNA of samples from day 1 and 3 and week 1, 3, 5 post injury was extracted. The expression of the NGAL gene was confirmed by RT-PCR. For immunohistochemistry analysis, the samples were fixed in paraformaldehyde and cut in 20 micrometer slices by cryostat. RESULTS The expression of NGAL significantly upregulated in day 1, 3 and week 1 following the crushing of sciatic nerves in comparison with the intact nerves. Immunohistochemistry results also confirmed the protein expression of this gene. DISCUSSION The NGAL molecule showed upregulation in the degeneration process after nerve injury, so it may play an important role in nerve repair.
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Affiliation(s)
- Fatemeh Aghanasir
- a Department of Physiology and Biophysics , Baqiyatallah University of Medical Sciences , Tehran , Iran
| | - Hassan Aghaei
- b Department of Physiology , Tehran University of Medical Sciences , Tehran , Iran
| | - Abbas Ali Imani Fooladi
- c Applied Microbiology Research Center, Baqiyatallah University of Medical Sciences , Tehran , Iran
| | - Majid Ebrahimi
- d Organ Anatomy Department, Graduate School of Medicine, Tohoku University , Sendai , Japan
| | - Ghasem Bagherpour
- e Department of Medical Biotechnology , Pasteur Institute of Iran , Tehran , Iran
| | - Mohammad Reza Nourani
- f Tissue Engineering Division, Baqiyatallah University of Medical Sciences , Tehran , Iran , and.,g Genomics Division, Systems Biology Institute, Chemical Injuries Research Center, Baqiyatallah University of Medical Sciences , Tehran , Iran
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Yamada Y, Miyamoto T, Kashima H, Kobara H, Asaka R, Ando H, Higuchi S, Ida K, Shiozawa T. Lipocalin 2 attenuates iron-related oxidative stress and prolongs the survival of ovarian clear cell carcinoma cells by up-regulating the CD44 variant. Free Radic Res 2016; 50:414-25. [PMID: 26729415 DOI: 10.3109/10715762.2015.1134795] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Ovarian clear cell carcinoma (CCC) arises from ovarian endometriosis. Intra-cystic fluid contains abundant amounts of free iron, which causes persistent oxidative stress, a factor that has been suggested to induce malignant transformation. However, the mechanisms linking oxidative stress and carcinogenesis in CCC currently remain unclear. Lipocalin 2 (LCN2), a multifunctional secretory protein, functions as an iron transporter as well as an antioxidant. Therefore, we herein examined the roles of LCN2 in the regulation of intracellular iron concentrations, oxidative stress, DNA damage, and antioxidative functions using LCN2-overexpressing (ES2), and LCN2-silenced (RMG-1) CCC cell lines. The results of calcein staining indicated that the up-regulated expression of LCN2 correlated with increases in intracellular iron concentrations. However, a DCFH-DA assay and 8OHdG staining revealed that LCN2 reduced intracellular levels of reactive oxygen species and DNA damage. Furthermore, the expression of LCN2 suppressed hydrogen peroxide-induced apoptosis and prolonged cell survival, suggesting an antioxidative role for LCN2. The expression of mRNAs and proteins for various oxidative stress-catalyzing enzymes, such as heme oxygenase (HO), superoxide dismutase (SOD), and glutathione peroxidase, was not affected by LCN2, whereas the intracellular concentration of the potent antioxidant, glutathione (GSH), was increased by LCN2. Furthermore, the expression of xCT, a cystine transporter protein, and CD44 variant 8-10 (CD44v), a stem cell marker, was up-regulated by LCN2. Although LCN2 increased intracellular iron concentrations, LCN2-induced GSH may catalyze and override oxidative stress via CD44v and xCT, and subsequently enhance the survival of CCC cells in oxidative stress-rich endometriosis.
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Affiliation(s)
- Yasushi Yamada
- a Department of Obstetrics and Gynecology , Shinshu University School of Medicine , Matsumoto , Japan
| | - Tsutomu Miyamoto
- a Department of Obstetrics and Gynecology , Shinshu University School of Medicine , Matsumoto , Japan
| | - Hiroyasu Kashima
- a Department of Obstetrics and Gynecology , Shinshu University School of Medicine , Matsumoto , Japan
| | - Hisanori Kobara
- a Department of Obstetrics and Gynecology , Shinshu University School of Medicine , Matsumoto , Japan
| | - Ryoichi Asaka
- a Department of Obstetrics and Gynecology , Shinshu University School of Medicine , Matsumoto , Japan
| | - Hirofumi Ando
- a Department of Obstetrics and Gynecology , Shinshu University School of Medicine , Matsumoto , Japan
| | - Shotaro Higuchi
- a Department of Obstetrics and Gynecology , Shinshu University School of Medicine , Matsumoto , Japan
| | - Koichi Ida
- a Department of Obstetrics and Gynecology , Shinshu University School of Medicine , Matsumoto , Japan
| | - Tanri Shiozawa
- a Department of Obstetrics and Gynecology , Shinshu University School of Medicine , Matsumoto , Japan
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Song B, Zhang H, Jiang L, Chi Y, Tian J, Du W, Yu B, Han Z. Down-regulation of lipocalin 2 suppresses the growth of human lung adenocarcinoma through oxidative stress involving Nrf2/HO-1 signaling. Acta Biochim Biophys Sin (Shanghai) 2015; 47:805-14. [PMID: 26350099 DOI: 10.1093/abbs/gmv085] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Accepted: 04/27/2015] [Indexed: 01/14/2023] Open
Abstract
Lipocalin 2 (LCN2), a multifunctional secretory protein known as neutrophil gelatinase-associated lipocalin (NGAL), is expressed in a variety of cancers. However, little is known about the biological functions of NGAL in the development of lung adenocarcinoma. In the present study, we primarily found that NGAL expression was up-regulated in human lung adenocarcinoma tissues. Additionally, depletion of NGAL expression decreased the ability of cell proliferation and induced cell apoptosis. Furthermore, with the addition of N-acetylcysteine, a scavenger of reactive oxygen species (ROS), it was found that NGAL depletion was sufficient to cause apoptosis of lung adenocarcinoma cells by generating ROS through the inhibition of the nuclear factor E2-related factor 2/heme oxygenase-1 anti-oxidant pathway. Finally, the effect of NGAL down-regulation on the growth of human lung adenocarcinoma was determined in BALB/c nude mice. These findings demonstrate that NGAL may be a potential therapy target for patients with lung adenocarcinoma.
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Affiliation(s)
- Baoquan Song
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Hospital of Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Hairui Zhang
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Hospital of Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Lei Jiang
- Department of Thoracic Surgery, the First Affiliated Hospital of Nanchang University, Nanchang 330000, China
| | - Ying Chi
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Hospital of Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Jianjian Tian
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Hospital of Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Wenjing Du
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Hospital of Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Bentong Yu
- Department of Thoracic Surgery, the First Affiliated Hospital of Nanchang University, Nanchang 330000, China
| | - Zhongchao Han
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Hospital of Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
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The Number of GT(n) Repeats in the Hemeoxygenase-1 Gene Promoter is Increased in Pediatric Heart Failure but is Unrelated to Renal, Antioxidant and Anti-inflammatory Markers. Pediatr Cardiol 2015; 36:1204-11. [PMID: 25822459 DOI: 10.1007/s00246-015-1146-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Accepted: 03/10/2015] [Indexed: 12/17/2022]
Abstract
Products of hemeoxygenase (HO)-1 have anti-inflammatory and antioxidant functions. The HO-1 promoter has a variable number of GT(n) repeats: A low number (n < 23) is associated with high transcriptional activity in response to oxidative stress. We hypothesized that the frequency of GT(n) repeats in pediatric heart failure (HF) reflects plasma biomarkers of different disease processes: the soluble receptor for advance glycation end products (sRAGE, marking cellular activation), oxLDL (oxidative stress), NGAL (impaired renal function), HIF-1α (hypoxia) and hsCRP (inflammation). Sixty HF children [aged 4-14 years, 30 with HF due to idiopathic dilated cardiomyopathy (IDCM), 30 due to chronic renal failure (CRF)] were compared to 20 healthy controls (HC). Leukocyte HO-1 GT(n) repeats were determined by PCR, plasma markers by ELISA or nephelometry. The number of GT(n) repeats in the HF patients was higher than the number of repeats in the controls, with no difference between the patient groups (p < 0.001). sRAGE, oxLDL, HIF-1α, NGAL and hsCRP were higher in both HF groups compared to HC (all p < 0.01). IDCM had higher sRAGEs and HIF-1α compared to CRF patients (p < 0.01). NGAL was higher in CRF compared to IDCM (p < 0.01). None of the plasma/serum markers correlated with the number of GT(n) repeats in any group. The number of HO-1 promoter GT(n) polymorphism is increased in both IDCM and CRF children with HF, but is unrelated to plasma markers of different pathological processes. This casts doubts on the clinical value of the number of GT(n) repeats in pediatric HF.
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Demir I, Toker A, Zengin S, Laloglu E, Aksoy H. Oxidative stress and insulin resistance in policemen working shifts. Int Arch Occup Environ Health 2015; 89:407-12. [DOI: 10.1007/s00420-015-1079-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Accepted: 07/14/2015] [Indexed: 11/29/2022]
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Fanti P, Giustarini D, Rossi R, Cunningham SED, Folli F, Khazim K, Cornell J, Matteucci E, Bansal S. Dietary Intake of Proteins and Calories Is Inversely Associated With The Oxidation State of Plasma Thiols in End-Stage Renal Disease Patients. J Ren Nutr 2015; 25:494-503. [PMID: 26235932 DOI: 10.1053/j.jrn.2015.06.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Revised: 05/18/2015] [Accepted: 06/09/2015] [Indexed: 11/11/2022] Open
Abstract
OBJECTIVES Oxidative stress contributes to the pathogenesis of protein-energy wasting in maintenance hemodialysis (MHD) patients, but knowledge of specific effectors and mechanisms remains fragmented. Aim of the study was to define whether and how food intake is involved in the causal relationship between oxidative stress and protein-energy wasting. METHODS Seventy-one adult MHD patients and 24 healthy subjects (control) were studied cross-sectionally with analyses of diet record and of oxidative stress, as measured by a battery of plasma thiols including the protein sulfhydryl (-SH) group (PSH) levels (a marker of total protein-SH reducing capacity), the protein thiolation index (PTI, the ratio between disulfide, i.e., oxidized and reduced -SH groups in proteins), low molecular mass (LMM) thiols, LMM disulfides, and mixed LMM-protein disulfides. In addition, interleukin-6 (IL-6), albumin, C-reactive protein, and neutrophil gelatinase-associated lipocalin (NGAL) were measured as markers of inflammation. RESULTS The patients showed low energy (22.0 ± 8.4 kcal/kg/day) and adequate protein (1.0 ± 0.4 g/kg/day) intakes, high levels of cystine (CySS; patients vs. CONTROL 113.5 [90.9-132.8] vs. 68.2 [56.2-75.7] μM), cysteinylated proteins (CySSP; 216.0 [182.8-254.0] vs. 163.5 [150.0-195.5] μM), and high PTI (0.76 [0.61-0.88] vs. 0.43 [0.40-0.54]; P < .001 in all comparisons). In patients, variation of CySSP was explained by a standard regression model (R = 0.775; P = .00001) that included significant contributions of protein intake (β = -0.361), NGAL (β = 0.387), age (β = 0.295), and albumin (β = 0.457). In the same model, variation of PTI (R = 0.624; P = .01) was explained by protein intake (β = -0.384) and age (β = 0.326) and NGAL (β = 0.311). However, when PSH was entered as dependent variable (R = 0.730; P = .0001), only serum albumin (β = 0.495) and age (β = -0.280), but not dietary intake or NGAL, contributed to the model. CONCLUSIONS In MHD, markers of thiol oxidation including CySSP and PTI show independent association with dietary intake and NGAL, whereas PSH, a marker of thiol-reducing capacity, did not associate with these same variables. The mechanism(s) responsible for inverse association between oxidative stress and food intake in MHD remain undefined.
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Affiliation(s)
- Paolo Fanti
- Division of Nephrology, Department of Medicine, University of Texas Health Science Center at San Antonio, San Antonio, Texas; Renal Section Medicine Service, South Texas Veteran Health Care System, San Antonio, Texas.
| | - Daniela Giustarini
- Department of Life Sciences, Laboratory of Pharmacology and Toxicology, University of Siena, Siena, Italy
| | - Ranieri Rossi
- Department of Life Sciences, Laboratory of Pharmacology and Toxicology, University of Siena, Siena, Italy
| | - Sue E D Cunningham
- School of Health Professions, University of Texas Health Science Center at San Antonio, San Antonio, Texas
| | - Franco Folli
- Division of Diabetes, Department of Medicine, University of Texas Health Science Center at San Antonio, San Antonio, Texas
| | - Khaled Khazim
- Nephrology and Hypertension Unit, Western Galilee Hospital, Nahariya, Israel
| | - John Cornell
- Department of Epidemiology and Biostatistics, University of Texas Health Science Center at San Antonio, San Antonio, Texas
| | | | - Shweta Bansal
- Division of Nephrology, Department of Medicine, University of Texas Health Science Center at San Antonio, San Antonio, Texas
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Lu H, Wang R, Xiong J, Xie H, Kayser B, Jia Z. In search for better pharmacological prophylaxis for acute mountain sickness: looking in other directions. Acta Physiol (Oxf) 2015; 214:51-62. [PMID: 25778288 DOI: 10.1111/apha.12490] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 02/23/2015] [Accepted: 03/11/2015] [Indexed: 12/15/2022]
Abstract
Despite decades of research, the exact pathogenic mechanisms underlying acute mountain sickness (AMS) are still poorly understood. This fact frustrates the search for novel pharmacological prophylaxis for AMS. The prevailing view is that AMS results from an insufficient physiological response to hypoxia and that prophylaxis should aim at stimulating the response. Starting off from the opposite hypothesis that AMS may be caused by an initial excessive response to hypoxia, we suggest that directly or indirectly blunting-specific parts of the response might provide promising research alternatives. This reasoning is based on the observations that (i) humans, once acclimatized, can climb Mt Everest experiencing arterial partial oxygen pressures (PaO2) as low as 25 mmHg without AMS symptoms; (ii) paradoxically, AMS usually develops at much higher PaO2 levels; and (iii) several biomarkers, suggesting initial activation of specific pathways at such PaO2, are correlated with AMS. Apart from looking for substances that stimulate certain hypoxia triggered effects, such as the ventilatory response to hypoxia, we suggest to also investigate pharmacological means aiming at blunting certain other specific hypoxia-activated pathways, or stimulating their agonists, in the quest for better pharmacological prophylaxis for AMS.
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Affiliation(s)
- H. Lu
- Key Laboratory of the Plateau of Environmental Damage Control; Lanzhou General Hospital of Lanzhou Military Command; Lanzhou China
| | - R. Wang
- Key Laboratory of the Plateau of Environmental Damage Control; Lanzhou General Hospital of Lanzhou Military Command; Lanzhou China
| | - J. Xiong
- Key Laboratory of the Plateau of Environmental Damage Control; Lanzhou General Hospital of Lanzhou Military Command; Lanzhou China
| | - H. Xie
- Key Laboratory of the Plateau of Environmental Damage Control; Lanzhou General Hospital of Lanzhou Military Command; Lanzhou China
| | - B. Kayser
- Institute of Sports Sciences and Department of Physiology; University of Lausanne; Lausanne Switzerland
| | - Z.P. Jia
- Key Laboratory of the Plateau of Environmental Damage Control; Lanzhou General Hospital of Lanzhou Military Command; Lanzhou China
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Otto GP, Hurtado-Oliveros J, Chung HY, Knoll K, Neumann T, Müller HJ, Herbsleb M, Kohl M, Busch M, Sossdorf M, Claus RA. Plasma Neutrophil Gelatinase-Associated Lipocalin Is Primarily Related to Inflammation during Sepsis: A Translational Approach. PLoS One 2015; 10:e0124429. [PMID: 25893429 PMCID: PMC4404058 DOI: 10.1371/journal.pone.0124429] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Accepted: 03/15/2015] [Indexed: 12/15/2022] Open
Abstract
Acute kidney injury (AKI) during sepsis is common and underestimated. Plasma neutrophil gelatinase-associated lipocalin (plasma-NGAL) is discussed as new biomarker for AKI diagnosis, but during inflammation its function and diagnostic impact remain unclear. The association between plasma-NGAL and inflammatory markers in septic patients, but also in healthy controls and patients with chronic inflammation before and after either maximum exercise test or treatment with an anti-TNF therapy were investigated. In-vitro blood stimulations with IL-6, lipopolysaccharide, NGAL or its combinations were performed to investigate cause-effect-relationship. Plasma-NGAL levels were stronger associated with inflammation markers including IL-6 (Sepsis: r=0.785 P<0.001; chronic inflammation after anti-TNF: r=0.558 P<0.001), IL-8 (Sepsis: r=0.714 P<0.004; healthy controls after exercise r=0.786 P<0.028; chronic inflammation before anti-TNF: r=0.429 P<0.041) and IL-10 (healthy controls before exercise: r=0.791 P<0.028) than with kidney injury or function. Correlation to kidney injury or function was found only in septic patients (for creatinine: r= 0.906 P<0.001; for eGFR: r= -0.686 P=0.005) and in patients with rheumatic disease after anti-TNF therapy (for creatinine: r= 0.466 P<0.025). In stimulation assays with IL-6 and lipopolysaccharide plasma-NGAL was increased. Co-stimulation of lipopolysaccharide with plasma-NGAL decreased cellular injury (P<0.05) and in trend IL-10 levels (P=0.057). Septic mice demonstrated a significantly improved survival rate after NGAL treatment (P<0.01). Plasma-NGAL seams to be strongly involved in inflammation. For clinical relevance, it might not only be useful for AKI detection during severe inflammation - indeed it has to be interpreted carefully within this setting - but additionally might offer therapeutic potential.
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Affiliation(s)
- Gordon P. Otto
- Center for Sepsis Control and Care, Jena University Hospital, Jena, Germany
- Clinic for Anesthesiology and Intensive Care, Jena University Hospital, Jena, Germany
- * E-mail:
| | | | - Ha-Yeun Chung
- Center for Sepsis Control and Care, Jena University Hospital, Jena, Germany
| | - Kristin Knoll
- Clinic for Internal Medicine (KIM III)—Rheumatology, Jena University Hospital, Jena, Germany
| | - Thomas Neumann
- Clinic for Internal Medicine (KIM III)—Rheumatology, Jena University Hospital, Jena, Germany
| | - Hans J. Müller
- Department of Sports Medicine and Health Promotion, Friedrich-Schiller-University, Jena, Germany
| | - Marco Herbsleb
- Department of Sports Medicine and Health Promotion, Friedrich-Schiller-University, Jena, Germany
| | - Matthias Kohl
- Department of Medical and Life Sciences, Furtwangen University, Villingen-Schwenningen, Germany
| | - Martin Busch
- Clinic for Internal Medicine (KIM III)—Nephrology, Jena University Hospital, Jena, Germany
| | - Maik Sossdorf
- Center for Sepsis Control and Care, Jena University Hospital, Jena, Germany
- Clinic for Anesthesiology and Intensive Care, Jena University Hospital, Jena, Germany
| | - Ralf A. Claus
- Center for Sepsis Control and Care, Jena University Hospital, Jena, Germany
- Clinic for Anesthesiology and Intensive Care, Jena University Hospital, Jena, Germany
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Exacerbation of acute kidney injury by bone marrow stromal cells from rats with persistent renin–angiotensin system activation. Clin Sci (Lond) 2015; 128:735-47. [DOI: 10.1042/cs20140445] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Activation of the renin–angiotensin system (RAS) severely abated the therapeutic functionality of bone marrow stromal cells (BMSCs). Because BMSCs contribute to tissue repair and regeneration, end-organ damage associated with overtly active RAS and hypertension may be exacerbated by BMSC dysfunctionality.
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Nasioudis D, Witkin SS. Neutrophil gelatinase-associated lipocalin and innate immune responses to bacterial infections. Med Microbiol Immunol 2015; 204:471-9. [PMID: 25716557 DOI: 10.1007/s00430-015-0394-1] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Accepted: 02/13/2015] [Indexed: 12/20/2022]
Abstract
Neutrophil gelatinase-associated lipocalin (NGAL), an essential component of the antimicrobial innate immune system, is present in neutrophils and multiple other tissues. It prevents iron acquisition by microorganisms by sequestering iron-loaded bacterial siderophores. NGAL also modulates neutrophil functions. Its production is inducible following Toll-like receptor 4 activation and release of pro-inflammatory cytokines. NGAL is employed clinically in the diagnosis of acute kidney injury and may be useful in general in the differential diagnosis of a bacterial-mediated infectious process. Elevated levels of NGAL have been detected in the blood of patients with bacterial urinary tract infection, community-acquired pneumonia, sepsis, as well as in the cerebrospinal fluid and peritoneal fluid of patients with bacterial meningitis and peritonitis. Some bacteria have developed resistance to NGAL-mediated iron sequestration by production of modified siderophores that are not recognized by NGAL.
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Affiliation(s)
- Dimitrios Nasioudis
- Division of Immunology and Infectious Diseases, Department of Obstetrics and Gynecology, Weill Cornell Medical College, 525 East 68th Street, New York, NY, 10065, USA
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Bao GH, Barasch J, Xu J, Wang W, Hu FL, Deng SX. Purification and Structural Characterization of "Simple Catechol", the NGAL-Siderocalin Siderophore in Human Urine. RSC Adv 2015; 5:28527-28535. [PMID: 26257890 DOI: 10.1039/c5ra02509e] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
The identification of ligands that bind the protein Neutrophil Gelatinase-Associated Lipocalin (NGAL, Siderocalin, Lipocalin-2) have helped to elucidate its function. NGAL-Siderocalin binds and sequesters the iron loaded bacterial siderophore enterochelin (Ent), defining the protein as an innate immune effector. Simple metabolic catechols can also form tight complexes with NGAL-Siderocalin and ferric iron, suggesting that the protein may act as an iron scavenger even in the absence of Ent. While different catechols have been detected in human urine, they have not been directly purified from a biofluid and demonstrated to ligate iron with NGAL-Siderocalin. This paper describes a "natural products" approach to identify small molecules that mediate iron binding to NGAL-Siderocalin. A 10K filtrate of human urine was subjected to multiple steps of column chromatography and reverse-phase HPLC, guided by NGAL-Siderocalin-iron binding assays and LC-MS detection. The co-factor forming a ternary structure with iron and NGAL-Siderocalin was identified as authentic simple catechol (dihydroxybenze) by ESI-HR-Mass, UV, and NMR spectrometric analysis. Comparison of the binding strengths of different catechols demonstrated that the vicinal-dihydroxyl groups were the key functional groups and that steric compatibilities of the catechol ring have the strongest effect on binding. Although catechol was a known NGAL-Siderocalin co-factor, our purification directly confirmed its presence in urine as well as its capacity to serve as an iron trap with NGAL-Siderocalin.
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Affiliation(s)
- Guan-Hu Bao
- Anhui Agricultural University, 130 West Changjiang Road, Hefei, Anhui Province, 230036, China
| | - Jonathan Barasch
- College of Physicians and Surgeons of Columbia University, 630 West 168 St, New York, USA
| | - Jie Xu
- Anhui Agricultural University, 130 West Changjiang Road, Hefei, Anhui Province, 230036, China
| | - Wei Wang
- Anhui Agricultural University, 130 West Changjiang Road, Hefei, Anhui Province, 230036, China
| | - Feng-Lin Hu
- Anhui Agricultural University, 130 West Changjiang Road, Hefei, Anhui Province, 230036, China
| | - Shi-Xian Deng
- College of Physicians and Surgeons of Columbia University, 630 West 168 St, New York, USA
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Halabian R, Roudkenar MH, Jahanian-Najafabadi A, Hosseini KM, Tehrani HA. Co-culture of bone marrow-derived mesenchymal stem cells overexpressing lipocalin 2 with HK-2 and HEK293 cells protects the kidney cells against cisplatin-induced injury. Cell Biol Int 2014; 39:152-63. [PMID: 25049146 DOI: 10.1002/cbin.10344] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2014] [Accepted: 06/25/2014] [Indexed: 12/16/2022]
Abstract
Conditioned medium of mesenchymal stem cells (MSCs) is now being used for its cytoprotective effects, especially when the cells are equipped with cytoprotective factors to strengthen them against unfavorable microenvironments. Overexpression of Lcn2 in MSCs mimics in vivo kidney injury. Hence, unraveling how Lcn2-engineered MSCs affect kidney cells has been investigated. Cisplatin treated HK-2 or HEK293 kidney cells were co-cultivated with Lcn2 overexpressing MSCs in upper and lower chambers of transwell plates. Proliferation, apoptosis, and expression of growth factors and cytokines were assessed in the kidney cells. Co-cultivation with the MSCs-Lcn2 not only inhibited cisplatin-induced cytotoxicity in the HK-2 and HEK293 cells, but increased proliferation rate, prevented cisplatin-induced apoptosis, and increased expression of growth factors and the amount of antioxidants in the kidney cells. Thus Lcn2-engineered MSCs can ameliorate and repair injured kidney cells in vitro, which strongly suggests there are beneficial effects of the MSCs-Lcn2 in cell therapy of kidney injury.
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Affiliation(s)
- Raheleh Halabian
- Department of Medical Biotechnology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
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Wang G, Liu X, Meng L, Liu S, Wang L, Li J, Cui C, Meng J, Hu S, Wei Y. Up-regulated lipocalin-2 in pulmonary hypertension involving in pulmonary artery SMC resistance to apoptosis. Int J Biol Sci 2014; 10:798-806. [PMID: 25076856 PMCID: PMC4115200 DOI: 10.7150/ijbs.9470] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Accepted: 06/16/2014] [Indexed: 12/20/2022] Open
Abstract
A key feature of pulmonary hypertension (PH) is the remodeling of small pulmonary arteries due to abnormal pulmonary artery smooth muscle cell (PASMC) proliferation and resistance to apoptosis. However, the cellular mechanisms underlying how PASMCs in the pathological condition of pulmonary hypertension become resistant to apoptosis remain unknown. It was recently reported that lipocalin 2 (Lcn2) is up-regulated in a wide array of malignant conditions, which facilitates tumorigenesis partly by inhibiting cell apoptosis. In this study, we observed that the expression levels of Lcn2 were significantly elevated in a rat PH model induced with monocrotaline and in patients with congenital heart disease-associated PH (CHD-PH) when compared with respective control. Therefore, we hypothesize that Lcn2 could regulate human PASMC (HPASMC) apoptosis through a mechanism. By the detection of DNA fragmentation using the TUNEL assay, the detection of Annexin V/PI-positive cells using flow cytometry, and the detection of cleaved caspase-3 and caspase-3 activity, we observed that Lcn2 significantly inhibited HPASMC apoptosis induced by serum withdrawal and H2O2 treatment. We also observed that Lcn2 down-regulated the proapoptotic protein Bax, decreased the levels of cellular ROS, and up-regulated the expression of superoxide dismutases (SOD1 and SOD2). In conclusion, Lcn2 significantly inhibits HPASMC apoptosis induced by oxidative stress via decreased intracellular ROS and elevated SODs. Up-regulation of Lcn2 in a rat PH model and CHD-PH patients may be involved in the pathological process of PH.
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Affiliation(s)
- Guoliang Wang
- 1. State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, People's Republic of China
| | - Xiaoyan Liu
- 2. Medical Research Center, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, 100020, People's Republic of China
| | - Liukun Meng
- 1. State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, People's Republic of China
| | - Shenghua Liu
- 1. State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, People's Republic of China
| | - Li Wang
- 1. State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, People's Republic of China
| | - Jun Li
- 1. State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, People's Republic of China
| | - Chuanjue Cui
- 1. State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, People's Republic of China
| | - Jian Meng
- 1. State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, People's Republic of China
| | - Shengshou Hu
- 1. State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, People's Republic of China
| | - Yingjie Wei
- 1. State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, People's Republic of China
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La Manna G, Ghinatti G, Tazzari PL, Alviano F, Ricci F, Capelli I, Cuna V, Todeschini P, Brunocilla E, Pagliaro P, Bonsi L, Stefoni S. Neutrophil gelatinase-associated lipocalin increases HLA-G(+)/FoxP3(+) T-regulatory cell population in an in vitro model of PBMC. PLoS One 2014; 9:e89497. [PMID: 24586826 PMCID: PMC3937322 DOI: 10.1371/journal.pone.0089497] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Accepted: 01/23/2014] [Indexed: 12/15/2022] Open
Abstract
Background Neutrophil gelatinase-associated lipocalin (NGAL) is emerging as a mediator of various biological and pathological states. However, the specific biological role of this molecule remains unclear, as it serves as a biomarker for many conditions. The high sensitivity of NGAL as a biomarker coupled with relatively low specificity may hide important biological roles. Data point toward an acute compensatory, protective role for NGAL in response to adverse cellular stresses, including inflammatory and oxidative stress. The aim of this study was to understand whether NGAL modulates the T-cell response through regulation of the human leukocyte antigen G (HLA-G) complex, which is a mediator of tolerance. Methodology/Principal Findings Peripheral blood mononuclear cells (PBMCs) were obtained from eight healthy donors and isolated by centrifugation on a Ficoll gradient. All donors gave informed consent. PBMCs were treated with four different concentrations of NGAL (40–320 ng/ml) in an iron-loaded or iron-free form. Changes in cell phenotype were analyzed by flow cytometry. NGAL stimulated expression of HLA-G on CD4+ T cells in a dose- and iron-dependent manner. Iron deficiency prevented NGAL-mediated effects, such that HLA-G expression was unaltered. Furthermore, NGAL treatment affected stimulation of regulatory T cells and in vitro expansion of CD4+ CD25+ FoxP3+ cells. An NGAL neutralizing antibody limited HLA-G expression and significantly decreased the percentage of CD4+ CD25+ FoxP3+ cells. Conclusions/Significance We provide in vitro evidence that NGAL is involved in cellular immunity. The potential role of NGAL as an immunomodulatory molecule is based on its ability to induce immune tolerance by upregulating HLA-G expression and expansion of T-regulatory cells in healthy donors. Future studies should further evaluate the role of NGAL in immunology and immunomodulation and its possible relationship to immunosuppressive therapy efficacy, tolerance induction in transplant patients, and other immunological disorders.
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Affiliation(s)
- Gaetano La Manna
- Dialysis, Nephrology and Transplantation Unit, Department of Experimental, Diagnostic and Specialty Medicine, St. Orsola University Hospital, Bologna, Italy
- * E-mail:
| | - Giulia Ghinatti
- Department of Internal and Experimental Medicine, Second University of Studies of Naples, Naples, Italy
| | - Pier Luigi Tazzari
- Service of Immunohematology and Transfusion Medicine, Department of Hematology, Oncology and Laboratory Medicine, St. Orsola University Hospital, Bologna, Italy
| | - Francesco Alviano
- Section of Histology, Embryology and Applied Biology, Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - Francesca Ricci
- Service of Immunohematology and Transfusion Medicine, Department of Hematology, Oncology and Laboratory Medicine, St. Orsola University Hospital, Bologna, Italy
| | - Irene Capelli
- Dialysis, Nephrology and Transplantation Unit, Department of Experimental, Diagnostic and Specialty Medicine, St. Orsola University Hospital, Bologna, Italy
| | - Vania Cuna
- Dialysis, Nephrology and Transplantation Unit, Department of Experimental, Diagnostic and Specialty Medicine, St. Orsola University Hospital, Bologna, Italy
| | - Paola Todeschini
- Dialysis, Nephrology and Transplantation Unit, Department of Experimental, Diagnostic and Specialty Medicine, St. Orsola University Hospital, Bologna, Italy
| | - Eugenio Brunocilla
- Urology Unit, Department of Experimental, Diagnostic and Specialty Medicine, St. Orsola University Hospital, Bologna, Italy
| | - Pasqualepaolo Pagliaro
- Service of Immunohematology and Transfusion Medicine, Department of Hematology, Oncology and Laboratory Medicine, St. Orsola University Hospital, Bologna, Italy
| | - Laura Bonsi
- Section of Histology, Embryology and Applied Biology, Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - Sergio Stefoni
- Dialysis, Nephrology and Transplantation Unit, Department of Experimental, Diagnostic and Specialty Medicine, St. Orsola University Hospital, Bologna, Italy
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Halabian R, Tehrani HA, Jahanian-Najafabadi A, Habibi Roudkenar M. Lipocalin-2-mediated upregulation of various antioxidants and growth factors protects bone marrow-derived mesenchymal stem cells against unfavorable microenvironments. Cell Stress Chaperones 2013; 18:785-800. [PMID: 23620204 PMCID: PMC3789877 DOI: 10.1007/s12192-013-0430-2] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2013] [Revised: 04/08/2013] [Accepted: 04/08/2013] [Indexed: 12/11/2022] Open
Abstract
Despite many advantages of mesenchymal stem cells (MSCs) that make them suitable for cell therapy purposes, their therapeutic application has been limited due to their susceptibility to several stresses (e.g., nutrient-poor environment, oxidative stress, and hypoxic and masses of cytotoxic factors) to which they are exposed during their preparation and following transplantation. Hence, reinforcing MSCs against these stresses is a challenge for both basic and clinician scientists. Recently, much attention has been directed toward equipping MSCs with cytoprotective factors to strengthen them against unfavorable microenvironments. Here, we engineered MSCs with lipocalin 2 (Lcn2), a cytoprotective factor that is naturally induced following exposure of cells to stresses imposed by the microenvironment. Lcn2 overexpression not only did not interfere with the multidifferentiation capacity of the MSCs but also granted many protective properties to them. Lcn2 potentiated MSCs to withstand oxidative, hypoxia, and serum deprivation (SD) conditions via antagonizing their induced cytotoxicity and apoptosis. Adhesion rate of MSCs to coated culture plates was also enhanced by Lcn2 overexpression. In addition, Lcn2 induced antioxidants and upregulated some growth factors in MSCs. Our findings suggested a new strategy for prevention of graft cell death in MSC-based cell therapy.
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Affiliation(s)
- Raheleh Halabian
- />Department of Medical Biotechnology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Hossein Abdul Tehrani
- />Department of Medical Biotechnology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Ali Jahanian-Najafabadi
- />Department of Pharmaceutical Biotechnology, School of Pharmacy, Isfahan University of Medical Sciences and Health Services, Isfahan, Iran
| | - Mehryar Habibi Roudkenar
- />Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, P.O. Box 14665-1157, Tehran, Iran
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Wollen EJ, Sejersted Y, Wright MS, Bik-Multanowski M, Madetko-Talowska A, Günther CC, Nygård S, Kwinta P, Pietrzyk JJ, Saugstad OD. Transcriptome profiling of the newborn mouse lung after hypoxia and reoxygenation: hyperoxic reoxygenation affects mTOR signaling pathway, DNA repair, and JNK-pathway regulation. Pediatr Res 2013; 74:536-44. [PMID: 23999071 DOI: 10.1038/pr.2013.140] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2012] [Accepted: 04/01/2013] [Indexed: 11/10/2022]
Abstract
BACKGROUND The use of oxygen in acute treatment of asphyxiated term newborns is associated with increased mortality. It is unclear how hyperoxic reoxygenation after hypoxia affects transcriptional changes in the newborn lung. METHODS On postnatal day 7, C57BL/6 mice (n = 62) were randomized to 120-min hypoxia (fraction of inspired oxygen (FiO2) 0.08) or normoxia. The hypoxia group was further randomized to reoxygenation for 30 min with FiO2 0.21, 0.40, 0.60, or 1.00, and the normoxia group to FiO2 0.21 or 1.00. Transcriptome profiling was performed on homogenized lung tissue using the Affymetrix 750k expression array, and validation was carried out by real-time polymerase chain reaction and enzyme-linked immunosorbent assay. RESULTS The hypoxia-reoxygenation model induced hypoxia-inducible factor 1 (HIF-1) targets like Vegfc, Adm, and Aqp1. In total, ~70% of the significantly differentially expressed genes were detected in the two high hyperoxic groups (FiO2 0.60 and 1.00). Reoxygenation with 100% oxygen after hypoxia uniquely upregulated Gadd45g, Dusp1, Peg3, and Tgm2. Pathway analysis identified mammalian target of rapamycin (mTOR) signaling pathway, DNA repair, c-jun N-terminal kinase (JNK)-pathway regulation, and cell cycle after hyperoxic reoxygenation was applied. CONCLUSION Acute hypoxia induces HIF-1 targets independent of the reoxygenation regime applied. Hyperoxic reoxygenation affects pathways regulating cell growth and survival. DNA-damage-responsive genes are restricted to reoxygenation with 100% oxygen.
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Affiliation(s)
- Embjørg J Wollen
- Department of Pediatric Research, Women and Children's Division, Oslo University Hospital, Rikshospitalet, University of Oslo, Oslo, Norway
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Neutrophil gelatinase-associated lipocalin: its response to hypoxia and association with acute mountain sickness. DISEASE MARKERS 2013; 35:537-42. [PMID: 24227892 PMCID: PMC3817649 DOI: 10.1155/2013/601214] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Revised: 09/23/2013] [Accepted: 09/24/2013] [Indexed: 11/18/2022]
Abstract
Acute Mountain Sickness (AMS) is a common clinical challenge at high altitude (HA). A point-of-care biochemical marker for AMS could have widespread utility. Neutrophil gelatinase-associated lipocalin (NGAL) rises in response to renal injury, inflammation and oxidative stress. We investigated whether NGAL rises with HA and if this rise was related to AMS, hypoxia or exercise. NGAL was assayed in a cohort (n = 22) undertaking 6 hours exercise at near sea-level (SL); a cohort (n = 14) during 3 hours of normobaric hypoxia (FiO2 11.6%) and on two trekking expeditions (n = 52) to over 5000 m. NGAL did not change with exercise at SL or following normobaric hypoxia. During the trekking expeditions NGAL levels (ng/ml, mean ± sd, range) rose significantly (P < 0.001) from 68 ± 14 (60–102) at 1300 m to 183 ± 107 (65–519); 143 ± 66 (60–315) and 150 ± 71 (60–357) at 3400 m, 4270 m and 5150 m respectively. At 5150 m there was a significant difference in NGAL between those with severe AMS (n = 7), mild AMS (n = 16) or no AMS (n = 23): 201 ± 34 versus 171 ± 19 versus 124 ± 12 respectively (P = 0.009 for severe versus no AMS; P = 0.026 for mild versus no AMS). In summary, NGAL rises in response to prolonged hypobaric hypoxia and demonstrates a relationship to the presence and severity of AMS.
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Identification of apolipoprotein D as a cardioprotective gene using a mouse model of lethal atherosclerotic coronary artery disease. Proc Natl Acad Sci U S A 2013; 110:17023-8. [PMID: 24082102 DOI: 10.1073/pnas.1315986110] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Mice with homozygous null mutations in the HDL receptor (scavenger receptor class B, type I, or SR-BI) and apolipoprotein E (apoE) genes [SR-BI/apoE double KO (SR-BI(-/-)/apoE(-/-) or dKO) mice] spontaneously develop occlusive, atherosclerotic coronary artery disease (CAD) and die prematurely (50% mortality at 42 d of age). Using microarray mRNA expression profiling, we identified genes whose expression in the hearts of dKO mice changed substantially during disease progression [at 21 d of age (no CAD), 31 d of age (small myocardial infarctions), and 43 d of age (extensive myocardial infarctions) vs. CAD-free SR-BI(+/-)/apoE(-/-) controls]. Expression of most genes that increased >sixfold in dKO hearts at 43 d also increased after coronary artery ligation. We examined the influence and potential mechanism of action of apolipoprotein D (apoD) whose expression in dKO hearts increased 80-fold by 43 d. Analysis of ischemia/reperfusion-induced myocardial infarction in both apoD KO mice and wild-type mice with abnormally high plasma levels of apoD (adenovirus-mediated hepatic overexpression) established that apoD reduces myocardial infarction. There was a correlation of apoD's ability to protect primary cultured rat cardiomyocytes from hypoxia/reoxygenation injury with its potent ability to inhibit oxidation in a standard antioxidation assay in vitro. We conclude that dKO mice represent a useful mouse model of CAD and apoD may be part of an intrinsic cardioprotective system, possibly as a consequence of its antioxidation activity.
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Kokkoris S, Pipili C, Grapsa E, Kyprianou T, Nanas S. Novel biomarkers of acute kidney injury in the general adult ICU: a review. Ren Fail 2013; 35:579-91. [PMID: 23472851 DOI: 10.3109/0886022x.2013.773835] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Acute kidney injury is one of the most frequent problems occurring in the critically ill patients of the intensive care units and it is well established that it increases both morbidity and mortality in these patients. Moreover, despite technological and pharmaceutical advances during the last decades, the incidence as well as the mortality associated with acute kidney injury in these patients remains unchanged. Creatinine, the most common renal dysfunction biomarker in use, has many disadvantages, such as time delay in its increase and the influence by other factors on its serum concentration, such as age, gender, muscle mass, etc. Hence, the need for better renal biomarkers in order to timely intervene for acute kidney injury prevention is imperative. The lack of an early biomarker is an obstacle for the development of new acute kidney injury prevention strategies. With the incidence of acute kidney injury reaching epidemic dimensions, the need for novel markers is urgent. During the last years, the research for finding such biomarkers has been intense. The purpose of the present article is to review the studies which have tested the predictive ability of those markers (in urine and/or plasma) for early detection of acute kidney injury in the mixed adult intensive care unit population and underline the potential limitations encountered in the various studies.
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Affiliation(s)
- Stelios Kokkoris
- First Critical Care Department, Medical School, National and Kapodistrian University of Athens, "Evangelismos" General Hospital, Athens, Greece
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Srinivasan G, Aitken JD, Zhang B, Carvalho FA, Chassaing B, Shashidharamurthy R, Borregaard N, Jones DP, Gewirtz AT, Vijay-Kumar M. Lipocalin 2 deficiency dysregulates iron homeostasis and exacerbates endotoxin-induced sepsis. THE JOURNAL OF IMMUNOLOGY 2012; 189:1911-9. [PMID: 22786765 DOI: 10.4049/jimmunol.1200892] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Various states of inflammation, including sepsis, are associated with hypoferremia, which limits iron availability to pathogens and reduces iron-mediated oxidative stress. Lipocalin 2 (Lcn2; siderocalin, 24p3) plays a central role in iron transport. Accordingly, Lcn2-deficient (Lcn2KO) mice exhibit elevated intracellular labile iron. In this study, we report that LPS induced systemic Lcn2 by 150-fold in wild-type mice at 24 h. Relative to wild-type littermates, Lcn2KO mice were markedly more sensitive to endotoxemia, exhibiting elevated indices of organ damage (transaminasemia, lactate dehydrogenase) and increased mortality. Such exacerbated endotoxemia was associated with substantially increased caspase-3 cleavage and concomitantly elevated immune cell apoptosis. Furthermore, cells from Lcn2KO mice were hyperresponsive to LPS ex vivo, exhibiting elevated cytokine secretion. Additionally, Lcn2KO mice exhibited delayed LPS-induced hypoferremia despite normal hepatic hepcidin expression and displayed decreased levels of the tissue redox state indicators cysteine and glutathione in liver and plasma. Desferroxamine, an iron chelator, significantly protects Lcn2KO mice from LPS-induced toxicity, including mortality, suggesting that Lcn2 may act as an antioxidant in vivo by regulating iron homeostasis. Thus, Lcn2-mediated regulation of labile iron protects the host against sepsis. Its small size and simple structure may make Lcn2 a deployable treatment for sepsis.
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Affiliation(s)
- Gayathri Srinivasan
- Department of Biology, Center for Inflammation, Immunity, and Infection, Georgia State University, Atlanta, GA 30303, USA
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Korrapati MC, Shaner BE, Neely BA, Alge JL, Arthur JM, Schnellmann RG. Diabetes-induced renal injury in rats is attenuated by suramin. J Pharmacol Exp Ther 2012; 343:34-43. [PMID: 22736507 DOI: 10.1124/jpet.112.196964] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Progression of hyperglycemia-induced renal injury is a contributing factor for diabetic nephropathy (DN)-induced end-stage renal disease (ESRD), and development of novel therapeutic strategies that act early to prevent progression of DN and ESRD are important. We examined the efficacy and mechanism(s) of suramin on hyperglycemia-induced renal injury before development of overt histological damage. Two groups of male Sprague-Dawley rats received streptozotocin (STZ) and one group received saline. Three weeks later, one STZ group received suramin (10 mg/kg). All animals were euthanized 1 week later (4 weeks). Although there was a decrease in creatinine clearance between control and STZ ± suramin rats, there was no difference in creatinine clearance between STZ rats ± suramin intervention. Liquid chromatography-tandem mass spectroscopy-based analysis revealed increases in urinary proteins that are early indicators of DN (e.g., cystatin C, clusterin, cathepsin B, retinol binding protein 4, and peroxiredoxin-1) in the STZ group, which were blocked by suramin. Endothelial intracellular adhesion molecule-1 (ICAM-1) activation, leukocyte infiltration, and inflammation; transforming growth factor-β1 (TGF-β1) signaling; TGF-β1/SMAD-3-activated fibrogenic markers fibronectin-1, α-smooth muscle actin, and collagen 1A2; activation of proinflammatory and profibrotic transcription factors nuclear factor-κB (NF-κB) and signal transducer and activator of transcription factor-3 (STAT-3), respectively, were all increased in STZ rats and suramin blocked these changes. In conclusion, delayed administration of suramin attenuated 1) urinary markers of DN, 2) inflammation by blocking NF-κB activation and ICAM-1-mediated leukocyte infiltration, and 3) fibrosis by blocking STAT-3 and TGF-β1/SMAD-3 signaling. These results support the potential use of suramin in DN.
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Affiliation(s)
- Midhun C Korrapati
- Department of Pharmaceutical and Biomedical Sciences, Medical University of South Carolina, Charleston, SC 29425, USA
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