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Benito S, Unceta N, Maciejczyk M, Sánchez-Ortega A, Taranta-Janusz K, Szulimowska J, Zalewska A, Andrade F, Gómez-Caballero A, Dubiela P, Barrio RJ. Revealing novel biomarkers for diagnosing chronic kidney disease in pediatric patients. Sci Rep 2024; 14:11549. [PMID: 38773318 PMCID: PMC11109104 DOI: 10.1038/s41598-024-62518-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Accepted: 05/17/2024] [Indexed: 05/23/2024] Open
Abstract
Pediatric chronic kidney disease (CKD) is a clinical condition characterized by progressive renal function deterioration. CKD diagnosis is based on glomerular filtration rate, but its reliability is limited, especially at the early stages. New potential biomarkers (citrulline (CIT), symmetric dimethylarginine (SDMA), S-adenosylmethionine (SAM), n-butyrylcarnitine (nC4), cis-4-decenoylcarnitine, sphingosine-1-phosphate and bilirubin) in addition to creatinine (CNN) have been proposed for early diagnosis. To verify the clinical value of these biomarkers we performed a comprehensive targeted metabolomics study on a representative cohort of CKD and healthy pediatric patients. Sixty-seven children with CKD and forty-five healthy children have been enrolled in the study. Targeted metabolomics based on liquid chromatography-triple quadrupole mass spectrometry has been used for serum and plasma samples analysis. Univariate data analysis showed statistically significant differences (p < 0.05) in the concentration of CNN, CIT, SDMA, and nC4 among healthy and CKD pediatric patients. The predictive ability of the proposed biomarkers was also confirmed through specificity and sensitivity expressed in Receiver Operating Characteristic curves (AUC = 0.909). In the group of early CKD pediatric patients, AUC of 0.831 was obtained, improving the diagnostic reliability of CNN alone. Moreover, the models built on combined CIT, nC4, SDMA, and CNN allowed to distinguish CKD patients from healthy control regardless of blood matrix type (serum or plasma). Our data demonstrate potential biomarkers in the diagnosis of early CKD stages.
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Affiliation(s)
- Sandra Benito
- Department of Analytical Chemistry, Faculty of Pharmacy, University of the Basque Country (UPV/EHU), Paseo de La Universidad 7, 01006, Vitoria-Gasteiz, Spain
- i+Med, S.Coop Parque Tecnológico de Alava, Albert Einstein 15, 01510, Vitoria-Gasteiz, Álava, Spain
| | - Nora Unceta
- Department of Analytical Chemistry, Faculty of Pharmacy, University of the Basque Country (UPV/EHU), Paseo de La Universidad 7, 01006, Vitoria-Gasteiz, Spain
| | - Mateusz Maciejczyk
- Department of Hygiene, Medical University of Bialystok, 15-233, Białystok, Poland
| | - Alicia Sánchez-Ortega
- Central Service of Analysis (Sgiker), University of the Basque Country (UPV/EHU), Laskaray Ikergunea, Miguel de Unamuno 3, 01006, Vitoria-Gasteiz, Spain
| | | | - Julita Szulimowska
- Department of Pedodontics, Medical University of Bialystok, 15-274, Białystok, Poland
| | - Anna Zalewska
- Department of Conservative Dentistry, Medical University of Bialystok, 15-274, Białystok, Poland
| | - Fernando Andrade
- Metabolomics and Proteomics Platform, Biobizkaia Health Research Institute, 48903, Barakaldo, Bizkaia, Spain
| | - Alberto Gómez-Caballero
- Department of Analytical Chemistry, Faculty of Pharmacy, University of the Basque Country (UPV/EHU), Paseo de La Universidad 7, 01006, Vitoria-Gasteiz, Spain
| | - Pawel Dubiela
- Department of Regenerative Medicine and Immune Regulation, Medical University of Bialystok, 15-269, Białystok, Poland.
| | - Ramón J Barrio
- Department of Analytical Chemistry, Faculty of Pharmacy, University of the Basque Country (UPV/EHU), Paseo de La Universidad 7, 01006, Vitoria-Gasteiz, Spain
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2
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Khokhar M. Non-invasive detection of renal disease biomarkers through breath analysis. J Breath Res 2024; 18:024001. [PMID: 38099568 DOI: 10.1088/1752-7163/ad15fb] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 12/14/2023] [Indexed: 01/06/2024]
Abstract
Breath biomarkers are substances found in exhaled breath that can be used for non-invasive diagnosis and monitoring of medical conditions, including kidney disease. Detection techniques include mass spectrometry (MS), gas chromatography (GC), and electrochemical sensors. Biosensors, such as GC-MS or electronic nose (e-nose) devices, can be used to detect volatile organic compounds (VOCs) in exhaled breath associated with metabolic changes in the body, including the kidneys. E-nose devices could provide an early indication of potential kidney problems through the detection of VOCs associated with kidney dysfunction. This review discusses the sources of breath biomarkers for monitoring renal disease during dialysis and different biosensor approaches for detecting exhaled breath biomarkers. The future of using various types of biosensor-based real-time breathing diagnosis for renal failure is also discussed.
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Affiliation(s)
- Manoj Khokhar
- Department of Biochemistry, All India Institute of Medical Sciences, Jodhpur, Rajasthan, India
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3
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Kodama T, Otani K, Okada M, Yamawaki H. Eukaryotic elongation factor 2 kinase inhibitor, A484954 induced diuresis via nitric oxide production in spontaneously hypertensive rats. J Vet Med Sci 2023; 85:1314-1318. [PMID: 37853639 PMCID: PMC10788169 DOI: 10.1292/jvms.23-0306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 10/03/2023] [Indexed: 10/20/2023] Open
Abstract
Eukaryotic elongation factor 2 (eEF2) kinase (eEF2K) is a protein kinase that inactivates eEF2, a protein that mediates a peptidyl-tRNA translocation during an elongation step of protein synthesis. We have previously shown that eEF2K was involved in pathogenesis of essential and pulmonary hypertension. A484954 (7-amino-1-cyclopropyl-3-ethyl-2,4-dioxo-1,2,3,4-tetrahydropyrido[2,3-d] pyrimidine-6-carboxamide), a selective eEF2K inhibitor, is a membrane permeable small molecule. We have previously shown that A484954 lowered blood pressure and induced diuretic effects in spontaneously hypertensive rats (SHR) due to an increase in renal blood flow. Here we aimed to reveal mechanisms underlying the diuretic effects of A484954 in SHR. A484954-induced diuresis and increase in urinary Na+ excretion were inhibited by N (G)-nitro-L-arginine methyl ester (L-NAME), a nitric oxide (NO) synthase inhibitor. A484954 increased mRNA expression of angiotensin type 2 receptor (AT2R) and nuclear factor-erythroid 2-related factor 2 (Nrf2). In summary, we for the first time revealed that A484954 induces diuresis in SHR at least partly via the activation of NO/Nrf2/AT2R pathway.
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Affiliation(s)
- Tomoko Kodama
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Kitasato University, Aomori, Japan
| | - Kosuke Otani
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Kitasato University, Aomori, Japan
| | - Muneyoshi Okada
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Kitasato University, Aomori, Japan
| | - Hideyuki Yamawaki
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Kitasato University, Aomori, Japan
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Udzik J, Pacholewicz J, Biskupski A, Walerowicz P, Januszkiewicz K, Kwiatkowska E. Alterations to Kidney Physiology during Cardiopulmonary Bypass-A Narrative Review of the Literature and Practical Remarks. J Clin Med 2023; 12:6894. [PMID: 37959359 PMCID: PMC10647422 DOI: 10.3390/jcm12216894] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Accepted: 10/31/2023] [Indexed: 11/15/2023] Open
Abstract
INTRODUCTION According to different authors, cardiac surgery-associated acute kidney injury (CSA-AKI) incidence can be as high as 20-50%. This complication increases postoperative morbidity and mortality and impairs long-term kidney function in some patients. This review aims to summarize current knowledge regarding alterations to renal physiology during cardiopulmonary bypass (CPB) and to discuss possible nephroprotective strategies for cardiac surgeries. Relevant sections: Systemic and renal circulation, Vasoactive drugs, Fluid balance and Osmotic regulation and Inflammatory response. CONCLUSIONS Considering the available scientific evidence, it is concluded that adequate kidney perfusion and fluid balance are the most critical factors determining postoperative kidney function. By adequate perfusion, one should understand perfusion with proper oxygen delivery and sufficient perfusion pressure. Maintaining the fluid balance is imperative for a normal kidney filtration process, which is essential for preserving the intra- and postoperative kidney function. FUTURE DIRECTIONS The review of the available literature regarding kidney function during cardiac surgery revealed a need for a more holistic approach to this subject.
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Affiliation(s)
- Jakub Udzik
- Department of Cardiac Surgery, Pomeranian Medical University, Powstancow Wielkopolskich 72, 70-111 Szczecin, Poland; (J.P.); (A.B.); (P.W.)
| | - Jerzy Pacholewicz
- Department of Cardiac Surgery, Pomeranian Medical University, Powstancow Wielkopolskich 72, 70-111 Szczecin, Poland; (J.P.); (A.B.); (P.W.)
| | - Andrzej Biskupski
- Department of Cardiac Surgery, Pomeranian Medical University, Powstancow Wielkopolskich 72, 70-111 Szczecin, Poland; (J.P.); (A.B.); (P.W.)
| | - Paweł Walerowicz
- Department of Cardiac Surgery, Pomeranian Medical University, Powstancow Wielkopolskich 72, 70-111 Szczecin, Poland; (J.P.); (A.B.); (P.W.)
| | - Kornelia Januszkiewicz
- Department of Anesthesiology, Intensive Care and Acute Intoxications, Pomeranian Medical University, Powstancow Wielkopolskich 72, 70-111 Szczecin, Poland;
| | - Ewa Kwiatkowska
- Clinical Department of Nephrology, Transplantology and Internal Medicine, Pomeranian Medical University, 70-111 Szczecin, Poland;
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Gomchok D, Ge RL, Wuren T. Platelets in Renal Disease. Int J Mol Sci 2023; 24:14724. [PMID: 37834171 PMCID: PMC10572297 DOI: 10.3390/ijms241914724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 09/18/2023] [Accepted: 09/26/2023] [Indexed: 10/15/2023] Open
Abstract
Kidney disease is a major global health concern, affecting millions of people. Nephrologists have shown interest in platelets because of coagulation disorders caused by renal diseases. With a better understanding of platelets, it has been found that these anucleate and abundant blood cells not only play a role in hemostasis, but also have important functions in inflammation and immunity. Platelets are not only affected by kidney disease, but may also contribute to kidney disease progression by mediating inflammation and immune effects. This review summarizes the current evidence regarding platelet abnormalities in renal disease, and the multiple effects of platelets on kidney disease progression. The relationship between platelets and kidney disease is still being explored, and further research can provide mechanistic insights into the relationship between thrombosis, bleeding, and inflammation related to kidney disease, and elucidate targeted therapies for patients with kidney disease.
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Affiliation(s)
- Drolma Gomchok
- Research Center for High Altitude Medicine, School of Medicine, Qinghai University, Xining 810001, China; (D.G.); (R.-L.G.)
| | - Ri-Li Ge
- Research Center for High Altitude Medicine, School of Medicine, Qinghai University, Xining 810001, China; (D.G.); (R.-L.G.)
- Key Laboratory for Application for High Altitude Medicine, Qinghai University, Xining 810001, China
| | - Tana Wuren
- Research Center for High Altitude Medicine, School of Medicine, Qinghai University, Xining 810001, China; (D.G.); (R.-L.G.)
- Key Laboratory for Application for High Altitude Medicine, Qinghai University, Xining 810001, China
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Sibley D, Chen M, West MA, Matthew AG, Santa Mina D, Randall I. Potential mechanisms of multimodal prehabilitation effects on surgical complications: a narrative review. Appl Physiol Nutr Metab 2023; 48:639-656. [PMID: 37224570 DOI: 10.1139/apnm-2022-0272] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Continuous advances in prehabilitation research over the past several decades have clarified its role in improving preoperative risk factors, yet the evidence demonstrating reduced surgical complications remains uncertain. Describing the potential mechanisms underlying prehabilitation and surgical complications represents an important opportunity to establish biological plausibility, develop targeted therapies, generate hypotheses for future research, and contribute to the rationale for implementation into the standard of care. In this narrative review, we discuss and synthesize the current evidence base for the biological plausibility of multimodal prehabilitation to reduce surgical complications. The goal of this review is to improve prehabilitation interventions and measurement by outlining biologically plausible mechanisms of benefit and generating hypotheses for future research. This is accomplished by synthesizing the available evidence for the mechanistic benefit of exercise, nutrition, and psychological interventions for reducing the incidence and severity of surgical complications reported by the American College of Surgeons National Surgical Quality Improvement Program (ACS-NSQIP). This review was conducted and reported in accordance with a quality assessment scale for narrative reviews. Findings indicate that prehabilitation has biological plausibility to reduce all complications outlined by NSQIP. Mechanisms for prehabilitation to reduce surgical complications include anti-inflammation, enhanced innate immunity, and attenuation of sympathovagal imbalance. Mechanisms vary depending on the intervention protocol and baseline characteristics of the sample. This review highlights the need for more research in this space while proposing potential mechanisms to be included in future investigations.
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Affiliation(s)
- Daniel Sibley
- Faculty of Kinesiology, University of Toronto, Toronto, ON, Canada
- Department of Anesthesia and Pain Management, Toronto General Hospital, University Health Network, Toronto, ON, Canada
| | - Maggie Chen
- Faculty of Kinesiology, University of Toronto, Toronto, ON, Canada
- Department of Anesthesia and Pain Management, Toronto General Hospital, University Health Network, Toronto, ON, Canada
| | - Malcolm A West
- Faculty of Medicine, Cancer Sciences, University of Southampton, UK
- NIHR Southampton Biomedical Research Centre, Perioperative and Critical Care, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Andrew G Matthew
- Department of Surgical Oncology, Princess Margaret Cancer Centre, Toronto, ON, Canada
- Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Daniel Santa Mina
- Faculty of Kinesiology, University of Toronto, Toronto, ON, Canada
- Department of Anesthesia and Pain Management, Toronto General Hospital, University Health Network, Toronto, ON, Canada
| | - Ian Randall
- Department of Anesthesia and Pain Management, Toronto General Hospital, University Health Network, Toronto, ON, Canada
- Faculty of Medicine, University of Toronto, Toronto, ON, Canada
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Daehn IS, Ekperikpe US, Stadler K. Redox regulation in diabetic kidney disease. Am J Physiol Renal Physiol 2023; 325:F135-F149. [PMID: 37262088 PMCID: PMC10393330 DOI: 10.1152/ajprenal.00047.2023] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 05/08/2023] [Accepted: 05/20/2023] [Indexed: 06/03/2023] Open
Abstract
Diabetic kidney disease (DKD) is one of the most devastating complications of diabetes mellitus, where currently there is no cure available. Several important mechanisms contribute to the pathogenesis of this complication, with oxidative stress being one of the key factors. The past decades have seen a large number of publications with various aspects of this topic; however, the specific details of redox regulation in DKD are still unclear. This is partly because redox biology is very complex, coupled with a complex and heterogeneous organ with numerous cell types. Furthermore, often times terms such as "oxidative stress" or reactive oxygen species are used as a general term to cover a wide and rich variety of reactive species and their differing reactions. However, no reactive species are the same, and not all of them are capable of biologically relevant reactions or "redox signaling." The goal of this review is to provide a biochemical background for an array of specific reactive oxygen species types with varying reactivity and specificity in the kidney as well as highlight some of the advances in redox biology that are paving the way to a better understanding of DKD development and risk.
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Affiliation(s)
- Ilse S Daehn
- Division of Nephrology, Department of Medicine, The Icahn School of Medicine at Mount Sinai, New York, New York, United States
| | - Ubong S Ekperikpe
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi, United States
| | - Krisztian Stadler
- Oxidative Stress and Disease Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana, United States
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Elmarakby AA, Saad KM, Crislip GR, Sullivan JC. Acute nitric oxide synthase inhibition induces greater increases in blood pressure in female versus male Wistar Kyoto rats. Physiol Rep 2023; 11:e15771. [PMID: 37549936 PMCID: PMC10406564 DOI: 10.14814/phy2.15771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 06/29/2023] [Accepted: 07/02/2023] [Indexed: 08/09/2023] Open
Abstract
Nitric oxide (NO) contributes to blood pressure (BP) regulation via its vasodilatory and anti-inflammatory properties. We and others previously reported sex differences in BP in normotensive and hypertensive rat models where females have lower BP than age-matched males. As females are known to have greater NO bioavailability than age-matched males, the current study was designed to test the hypothesis that anesthetized female normotensive Wistar Kyoto rats (WKY) are more responsive to acute NOS inhibition-induced increases in BP compared to male WKY. Twelve-week-old male and female WKY were randomized to infusion of the nonspecific NOS inhibitor NG -nitro-L-arginine methyl ester (L-NAME, 1 mg/kg/min) or selective NOS1 inhibition with vinyl-L-NIO (VNIO, 0.5 mg/kg/min) for 60 min. Mean arterial BP, glomerular filtration rate (GFR), urine volume, and electrolyte excretion were assessed before, and during L-NAME or VNIO infusion. L-NAME and VNIO significantly increased BP in both sexes; however, the increase in BP with L-NAME infusion was greater in females versus males compared to baseline BP values. Acute infusion of neither L-NAME nor VNIO for 60 min altered GFR in either sex. However, urine volume, sodium, chloride and potassium excretion levels increased comparably in male and female WKY with L-NAME and VNIO infusion. Our findings suggest sex differences in BP responses to acute non-isoform-specific NOS inhibition in WKY, with females being more responsive to L-NAME-induced elevations in BP relative to male WKY. However, sex differences in the BP response did not coincide with sex differences in renal hemodynamic responses to acute NOS inhibition.
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Affiliation(s)
- Ahmed A. Elmarakby
- Departments of Oral Biology & Diagnostic SciencesAugusta UniversityAugustaGeorgiaUSA
- Department of Pharmacology and Toxicology, Faculty of PharmacyMansoura UniversityMansouraEgypt
| | - Karim M. Saad
- Departments of Oral Biology & Diagnostic SciencesAugusta UniversityAugustaGeorgiaUSA
- Department of Pharmacology and Toxicology, Faculty of PharmacyMansoura UniversityMansouraEgypt
| | - G. Ryan Crislip
- Departments of PhysiologyAugusta UniversityAugustaGeorgiaUSA
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Lin YP, Ding RS, Yin CH, Chen YS, Chen JS, Chang ST. Effects of Intravascular Photobiomodulation on Insomnia, Muscle Soreness, and Biochemistry Profiles: An Eight-Year Retrospective Cohort. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:1006. [PMID: 37374210 PMCID: PMC10305368 DOI: 10.3390/medicina59061006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 05/03/2023] [Accepted: 05/18/2023] [Indexed: 06/29/2023]
Abstract
BACKGROUND Although cognitive-behavioral therapy is the first-line treatment for insomnia, pharmacotherapy is often prescribed to treat insomnia and related symptoms. In addition, muscle relaxants are commonly prescribed to alleviate muscle soreness when the pain is unbearable. However, pharmacotherapy can lead to numerous side effects. The non-drug strategy intravascular laser irradiation of blood (iPBM) has been advocated to improve pain, wound healing, blood circulation, and blood cell function to relieve insomnia and muscle soreness symptoms. Therefore, we assessed whether iPBM improves blood parameters and compared drug use before and after iPBM therapy. METHODS Consecutive patients who received iPBM therapy between January 2013 and August 2021 were reviewed. The associations between laboratory data, pharmacotherapies, and iPBM therapy were retrospectively analyzed. We compared patient characteristics, blood parameters, and drug use within the three months before the first treatment and the three months after the last treatment. We also compared the changes before and after treatment in patients who received ≥10 or 1-9 iPBM treatments. RESULT We assessed 183 eligible patients who received iPBM treatment. Of them, 18 patients reported insomnia disturbance, and 128 patients reported pain in any part of their body. After the treatment, HGB and HCT significantly increased after treatment in both the ≥10 and 1-9 iPBM treatment groups (HGB p < 0.001 and p = 0.046; HCT p < 0.001 and p = 0.029, respectively). Pharmacotherapy analysis revealed no significant differences in drug use before and after treatment, though drug use tended to decrease after iPBM. CONCLUSIONS iPBM therapy is an efficient, beneficial, and feasible treatment that increases HGB and HCT. While the results of this study do not support the suggestion that iPBM reduces drug use, further larger studies using symptom scales are needed to confirm the changes in insomnia and muscle soreness after iPBM treatment.
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Affiliation(s)
- Yen-Po Lin
- Department of Medical Education, Kaohsiung Veterans General Hospital, Kaohsiung 813, Taiwan
- Department of Medical Education, National Cheng Kung University Hospital, Tainan 704, Taiwan
| | - Ruei-Sian Ding
- Department of Physical Medicine and Rehabilitation, Kaohsiung Veterans General Hospital, Kaohsiung 813, Taiwan
| | - Chun-Hao Yin
- Institute of Health Care Management, National Sun Yat-sen University, Kaohsiung 804, Taiwan
| | - Yao-Shen Chen
- Department of Administration, Kaohsiung Veterans General Hospital, Kaohsiung 813, Taiwan
| | - Jin-Shuen Chen
- Department of Administration, Kaohsiung Veterans General Hospital, Kaohsiung 813, Taiwan
| | - Shin-Tsu Chang
- Department of Physical Medicine and Rehabilitation, Kaohsiung Veterans General Hospital, Kaohsiung 813, Taiwan
- Department of Physical Medicine and Rehabilitation, Tri-Service General Hospital, School of Medicine, National Defense Medical Center, Taipei 114, Taiwan
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Babaeenezhad E, Dezfoulian O, Hadipour Moradi F, Rahimi Monfared S, Fattahi MD, Nasri M, Amini A, Ahmadvand H. Exogenous glutathione protects against gentamicin-induced acute kidney injury by inhibiting NF-κB pathway, oxidative stress, and apoptosis and regulating PCNA. Drug Chem Toxicol 2023; 46:441-450. [PMID: 35266424 DOI: 10.1080/01480545.2022.2049290] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
This study was designed, for the first time, to examine the possible nephroprotective effects of exogenous glutathione (EGSH) (100 mg/kg, intraperitoneally) on gentamicin-induced acute kidney injury (GM-induced AKI). EGSH reduced renal histopathological changes, inflammatory cell infiltration, and improved renal dysfunction in rats with AKI. EGSH ameliorated GM-induced renal oxidative stress by promoting the renal activities of catalase, glutathione peroxidase, and superoxide dismutase and diminishing renal malondialdehyde and serum nitric oxide levels. Interestingly, EGSH inhibited intrinsic apoptosis by downregulating Bax and caspase-3 and upregulating Bcl2 in the kidney of rats with AKI. EGSH decreased GM-induced inflammatory response as reflected by a remarkable decrease in the protein expressions of NF-κB-p65, IL-6, TNF-α, and iNOS and a considerable diminish in myeloperoxidase activity. Finally, EGSH markedly declined proliferative cell nuclear antigen (PCNA) protein expression in the animals with AKI. In summary, EGSH alleviated AKI in rats intoxicated with GM, partially by inhibiting oxidative stress, NF-κB pathway, and intrinsic apoptosis and regulating PCNA.
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Affiliation(s)
- Esmaeel Babaeenezhad
- Department of Clinical Biochemistry, School of Medicine, Student Research Committee, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Omid Dezfoulian
- Department of Pathobiology, School of Veterinary Medicine, Lorestan University, Khorramabad, Iran
| | - Forouzan Hadipour Moradi
- Razi Herbal Medicines Research Center, Faculty of Medicine, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Sobhan Rahimi Monfared
- Razi Herbal Medicines Research Center, Faculty of Medicine, Lorestan University of Medical Sciences, Khorramabad, Iran.,Department of Clinical Biochemistry, Faculty of Medicine, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Mohammad Davood Fattahi
- Department of Clinical Biochemistry, School of Medicine, Student Research Committee, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maryam Nasri
- Razi Herbal Medicines Research Center, Faculty of Medicine, Lorestan University of Medical Sciences, Khorramabad, Iran.,Department of Clinical Biochemistry, Faculty of Medicine, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Abdolhakim Amini
- Razi Herbal Medicines Research Center, Faculty of Medicine, Lorestan University of Medical Sciences, Khorramabad, Iran.,Department of Clinical Biochemistry, Faculty of Medicine, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Hassan Ahmadvand
- Razi Herbal Medicines Research Center, Faculty of Medicine, Lorestan University of Medical Sciences, Khorramabad, Iran.,Department of Clinical Biochemistry, Faculty of Medicine, Lorestan University of Medical Sciences, Khorramabad, Iran
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11
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Kuczeriszka M, Wąsowicz K. Animal models of hypertension: The status of nitric oxide and oxidative stress and the role of the renal medulla. Nitric Oxide 2022; 125-126:40-46. [PMID: 35700961 DOI: 10.1016/j.niox.2022.06.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 05/22/2022] [Accepted: 06/09/2022] [Indexed: 12/21/2022]
Abstract
Hypertension significantly contributes to overall morbidity and mortality worldwide, and animal models of hypertension provide important tools to verify the physiological and molecular mechanisms underlying the development of the disease. A review of the most important models available would provide an insight into the appropriate targets to be addressed in the treatment of different forms of human hypertension. In the animal models discussed a special attention is given to the status and pathophysiological role of nitric oxide and its interaction with reactive oxygen species and oxidative stress. Another focus of the review are the processes running in the renal medulla which are still insufficiently explored. Deficient nitric oxide synthesis and its reduced bioavailability are important determinants of hypertension since NO is recognized as a major control factor of vascular tone homeostasis. For decades perfusion of the renal medulla has also been regarded as one of the blood pressure control factors and, noteworthily, the renal medulla belongs to the tissues with the highest NO content. The list of most often applied animal hypertension models reviewed here includes variants of salt-induced hypertension, the models with genetic background: such as spontaneously hypertensive rats (SHR) and Dahl salt sensitive (SS/SR) rats, Goldblatt 2K-1C hypertensive rats, and also the pharmacologically-plus-dietary salt-induced model known as DOCA-salt hypertension.
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Affiliation(s)
- Marta Kuczeriszka
- Department of Renal and Body Fluid Physiology, M. Mossakowski Medical Research Institute, Polish Academy of Sciences, 02-106, Warsaw, A. Pawinskiego 5, Poland.
| | - Krzysztof Wąsowicz
- Department of Pathophysiology, Forensic Veterinary Medicine and Administration, University of Warmia and Mazury in Olsztyn, 10-719, Olsztyn, Oczapowskiego 13, Poland
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Semenikhina M, Stefanenko M, Spires DR, Ilatovskaya DV, Palygin O. Nitric-Oxide-Mediated Signaling in Podocyte Pathophysiology. Biomolecules 2022; 12:biom12060745. [PMID: 35740870 PMCID: PMC9221338 DOI: 10.3390/biom12060745] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Revised: 05/16/2022] [Accepted: 05/23/2022] [Indexed: 11/23/2022] Open
Abstract
Nitric oxide (NO) is a potent signaling molecule involved in many physiological and pathophysiological processes in the kidney. NO plays a complex role in glomerular ultrafiltration, vasodilation, and inflammation. Changes in NO bioavailability in pathophysiological conditions such as hypertension or diabetes may lead to podocyte damage, proteinuria, and rapid development of chronic kidney disease (CKD). Despite the extensive data highlighting essential functions of NO in health and pathology, related signaling in glomerular cells, particularly podocytes, is understudied. Several reports indicate that NO bioavailability in glomerular cells is decreased during the development of renal pathology, while restoring NO level can be beneficial for glomerular function. At the same time, the compromised activity of nitric oxide synthase (NOS) may provoke the formation of peroxynitrite and has been linked to autoimmune diseases such as systemic lupus erythematosus. It is known that the changes in the distribution of NO sources due to shifts in NOS subunits expression or modifications of NADPH oxidases activity may be linked to or promote the development of pathology. However, there is a lack of information about the detailed mechanisms describing the production and release of NO in the glomerular cells. The interaction of NO and other reactive oxygen species in podocytes and how NO-calcium crosstalk regulates glomerular cells’ function is still largely unknown. Here, we discuss recent reports describing signaling, synthesis, and known pathophysiological mechanisms mediated by the changes in NO homeostasis in the podocyte. The understanding and further investigation of these essential mechanisms in glomerular cells will facilitate the design of novel strategies to prevent or manage health conditions that cause glomerular and kidney damage.
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Affiliation(s)
- Marharyta Semenikhina
- Division of Nephrology, Department of Medicine, Medical University of South Carolina, Charleston, SC 29425, USA; (M.S.); (M.S.)
| | - Mariia Stefanenko
- Division of Nephrology, Department of Medicine, Medical University of South Carolina, Charleston, SC 29425, USA; (M.S.); (M.S.)
| | - Denisha R. Spires
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA; (D.R.S.); (D.V.I.)
| | - Daria V. Ilatovskaya
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA; (D.R.S.); (D.V.I.)
| | - Oleg Palygin
- Division of Nephrology, Department of Medicine, Medical University of South Carolina, Charleston, SC 29425, USA; (M.S.); (M.S.)
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
- Correspondence:
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13
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Pereira BP, do Vale GT, Ceron CS. The role of nitric oxide in renovascular hypertension: from the pathophysiology to the treatment. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2022; 395:121-131. [PMID: 34994823 DOI: 10.1007/s00210-021-02186-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 11/17/2021] [Indexed: 12/25/2022]
Abstract
Renovascular hypertension is one of the most relevant causes of secondary hypertension, mostly caused by atherosclerotic renovascular stenosis or fibromuscular dysplasia. The increase in angiotensin II production, oxidative stress, and formation of peroxynitrite promotes the decrease in nitric oxide (NO) availability and the development of hypertension, renal and endothelial dysfunction, and cardiac and vascular remodeling. The NO produced by nitric oxide synthases (NOS) acts as a vasodilator; however, endothelial NOS uncoupling (eNOS) also contributes to NO reduced availability in renovascular hypertension. NO donors and NO-derived metabolites have been investigated in experimental renovascular hypertension and have shown promissory effects in attenuating blood pressure and organ damage in this condition. Therefore, understanding the role of decreased NO in the pathophysiology of renovascular hypertension promotes the study and development of NO donors and molecules that can be converted into NO (such as nitrate and nitrite), contributing for the treatment of this condition in the future.
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Affiliation(s)
- Bruna Pinheiro Pereira
- Departamento de Alimentos E Medicamentos, Universidade Federal de Alfenas (UNIFAL-MG), Alfenas, Minas Gerais, Brazil
| | - Gabriel Tavares do Vale
- Departamento de Ciências Biomédicas E da Saúde, Universidade Do Estado de Minas Gerais (UEMG), Belo Horizonte, Minas Gerais, Brazil
| | - Carla Speroni Ceron
- Departamento de Ciências Biológicas, Universidade Federal de Ouro Preto (UFOP), Ouro Preto, Minas Gerais, Brasil.
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14
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Chiang KC, Imig JD, Kalantar-Zadeh K, Gupta A. Kidney in the net of acute and long-haul coronavirus disease 2019: a potential role for lipid mediators in causing renal injury and fibrosis. Curr Opin Nephrol Hypertens 2022; 31:36-46. [PMID: 34846312 DOI: 10.1097/mnh.0000000000000750] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
PURPOSE OF REVIEW Severe COVID-19 disease is often complicated by acute kidney injury (AKI), which may transition to chronic kidney disease (CKD). Better understanding of underlying mechanisms is important in advancing therapeutic approaches. RECENT FINDINGS SARS-CoV-2-induced endothelial injury initiates platelet activation, platelet-neutrophil partnership and release of neutrophil extracellular traps. The resulting thromboinflammation causes ischemia-reperfusion (I/R) injury to end organs. Severe COVID-19 induces a lipid-mediator storm with massive increases in thromboxane A2 (TxA2) and PGD2, which promote thromboinflammation and apoptosis of renal tubular cells, respectively, and thereby enhance renal fibrosis. COVID-19-associated AKI improves rapidly in the majority. However, 15-30% have protracted renal injury, raising the specter of transition from AKI to CKD. SUMMARY In COVID-19, the lipid-mediator storm promotes thromboinflammation, ischemia-reperfusion injury and cytotoxicity. The thromboxane A2 and PGD2 signaling presents a therapeutic target with potential to mitigate AKI and transition to CKD. Ramatroban, the only dual antagonist of the thromboxane A2/TPr and PGD2/DPr2 signaling could potentially mitigate renal injury in acute and long-haul COVID. Urgent studies targeting the lipid-mediator storm are needed to potentially reduce the heavy burden of kidney disease emerging in the wake of the current pandemic.
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Affiliation(s)
| | - John D Imig
- Drug Discovery Center and Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Kamyar Kalantar-Zadeh
- Division of Nephrology, Hypertension and Kidney Transplantation, Department of Medicine, University of California Irvine (UCI) School of Medicine, Orange, California, USA
| | - Ajay Gupta
- KARE Biosciences, Orange, California
- Division of Nephrology, Hypertension and Kidney Transplantation, Department of Medicine, University of California Irvine (UCI) School of Medicine, Orange, California, USA
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15
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Agarwal S, Sudhini YR, Polat OK, Reiser J, Altintas MM. Renal cell markers: lighthouses for managing renal diseases. Am J Physiol Renal Physiol 2021; 321:F715-F739. [PMID: 34632812 DOI: 10.1152/ajprenal.00182.2021] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Kidneys, one of the vital organs in our body, are responsible for maintaining whole body homeostasis. The complexity of renal function (e.g., filtration, reabsorption, fluid and electrolyte regulation, and urine production) demands diversity not only at the level of cell types but also in their overall distribution and structural framework within the kidney. To gain an in depth molecular-level understanding of the renal system, it is imperative to discern the components of kidney and the types of cells residing in each of the subregions. Recent developments in labeling, tracing, and imaging techniques have enabled us to mark, monitor, and identify these cells in vivo with high efficiency in a minimally invasive manner. In this review, we summarize different cell types, specific markers that are uniquely associated with those cell types, and their distribution in the kidney, which altogether make kidneys so special and different. Cellular sorting based on the presence of certain proteins on the cell surface allowed for the assignment of multiple markers for each cell type. However, different studies using different techniques have found contradictions in cell type-specific markers. Thus, the term "cell marker" might be imprecise and suboptimal, leading to uncertainty when interpreting the data. Therefore, we strongly believe that there is an unmet need to define the best cell markers for a cell type. Although the compendium of renal-selective marker proteins presented in this review is a resource that may be useful to researchers, we acknowledge that the list may not be necessarily exhaustive.
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Affiliation(s)
- Shivangi Agarwal
- Department of Internal Medicine, Rush University, Chicago, Illinois
| | | | - Onur K Polat
- Department of Internal Medicine, Rush University, Chicago, Illinois
| | - Jochen Reiser
- Department of Internal Medicine, Rush University, Chicago, Illinois
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16
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Pasten C, Lozano M, Rocco J, Carrión F, Alvarado C, Liberona J, Michea L, Irarrázabal CE. Aminoguanidine Prevents the Oxidative Stress, Inhibiting Elements of Inflammation, Endothelial Activation, Mesenchymal Markers, and Confers a Renoprotective Effect in Renal Ischemia and Reperfusion Injury. Antioxidants (Basel) 2021; 10:antiox10111724. [PMID: 34829595 PMCID: PMC8614713 DOI: 10.3390/antiox10111724] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/02/2021] [Accepted: 10/06/2021] [Indexed: 11/16/2022] Open
Abstract
Oxidative stress produces macromolecules dysfunction and cellular damage. Renal ischemia-reperfusion injury (IRI) induces oxidative stress, inflammation, epithelium and endothelium damage, and cessation of renal function. The IRI is an inevitable process during kidney transplantation. Preliminary studies suggest that aminoguanidine (AG) is an antioxidant compound. In this study, we investigated the antioxidant effects of AG (50 mg/kg, intraperitoneal) and its association with molecular pathways activated by IRI (30 min/48 h) in the kidney. The antioxidant effect of AG was studied measuring GSSH/GSSG ratio, GST activity, lipoperoxidation, iNOS, and Hsp27 levels. In addition, we examined the effect of AG on elements associated with cell survival, inflammation, endothelium, and mesenchymal transition during IRI. AG prevented lipid peroxidation, increased GSH levels, and recovered the GST activity impaired by IRI. AG was associated with inhibition of iNOS, Hsp27, endothelial activation (VE-cadherin, PECAM), mesenchymal markers (vimentin, fascin, and HSP47), and inflammation (IL-1β, IL-6, Foxp3, and IL-10) upregulation. In addition, AG reduced kidney injury (NGAL, clusterin, Arg-2, and TFG-β1) and improved kidney function (glomerular filtration rate) during IRI. In conclusion, we found new evidence of the antioxidant properties of AG as a renoprotective compound during IRI. Therefore, AG is a promising compound to treat the deleterious effect of renal IRI.
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Affiliation(s)
- Consuelo Pasten
- Laboratorio de Fisiología Integrativa y Molecular, Programa de Fisiología, Centro de Investigación e Innovación Biomédica, Universidad de los Andes, Santiago 7620157, Chile; (C.P.); (M.L.); (J.R.)
- Facultad de Medicina, Universidad de los Andes, Santiago 7620157, Chile
| | - Mauricio Lozano
- Laboratorio de Fisiología Integrativa y Molecular, Programa de Fisiología, Centro de Investigación e Innovación Biomédica, Universidad de los Andes, Santiago 7620157, Chile; (C.P.); (M.L.); (J.R.)
| | - Jocelyn Rocco
- Laboratorio de Fisiología Integrativa y Molecular, Programa de Fisiología, Centro de Investigación e Innovación Biomédica, Universidad de los Andes, Santiago 7620157, Chile; (C.P.); (M.L.); (J.R.)
| | - Flavio Carrión
- Facultad de Ciencias de la Salud, Universidad del Alba, Santiago 7620157, Chile;
| | - Cristobal Alvarado
- Clinical Research Unit, Hospital Las Higueras, Talcahuano 4260000, Chile;
- Department of Basic Sciences, School of Medicine, Universidad Católica de la Santísima Concepción, Concepción 4030000, Chile
| | - Jéssica Liberona
- Instituto de Ciencias Biomédicas, School of Medicine, Universidad de Chile, Santiago 7620157, Chile; (J.L.); (L.M.)
| | - Luis Michea
- Instituto de Ciencias Biomédicas, School of Medicine, Universidad de Chile, Santiago 7620157, Chile; (J.L.); (L.M.)
- Millennium Institute on Immunology and Immunotheraphy, Santiago 762015, Chile
| | - Carlos E. Irarrázabal
- Laboratorio de Fisiología Integrativa y Molecular, Programa de Fisiología, Centro de Investigación e Innovación Biomédica, Universidad de los Andes, Santiago 7620157, Chile; (C.P.); (M.L.); (J.R.)
- Facultad de Medicina, Universidad de los Andes, Santiago 7620157, Chile
- Correspondence: ; Tel.: +56-2-4129607
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17
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Sharma S, Kaur T, Sharma AK, Singh B, Pathak D, Yadav HN, Singh AP. Betaine attenuates sodium arsenite-induced renal dysfunction in rats. Drug Chem Toxicol 2021; 45:2488-2495. [PMID: 34380335 DOI: 10.1080/01480545.2021.1959699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Exposure to higher levels of arsenic is a serious threat affecting human health worldwide. We investigated the protective role of betaine (N,N,N-trimethylglycine) against sodium arsenite-induced renal dysfunction in rats. Sodium arsenite (5 mg/kg, oral) was given to rats for 4 weeks to induce nephrotoxicity. Betaine (125 and 250 mg/kg, oral) was administered in rats for 4 weeks along with sodium-arsenite feeding. Arsenic-induced renal dysfunction was demonstrated by measuring serum creatinine, creatinine clearance, urea, uric acid, potassium, fractional excretion of sodium, and microproteinuria. Oxidative stress in rat kidneys was determined by assaying thiobarbituric acid reactive substances, superoxide anion generation, and reduced glutathione levels. Furthermore, hydroxyproline assay was done to assess renal fibrosis in arsenic intoxicated rats. Hematoxylin-eosin and picrosirius red staining revealed pathological alterations in rat kidneys. Renal endothelial nitric oxide synthase (eNOS) expression was determined by immuno-histochemistry. Concurrent administration of betaine abrogated arsenic-induced renal biochemical and histological changes in rats. Betaine treatment significantly attenuated arsenic-induced decrease in renal eNOS expression. In conclusion, betaine is protective against sodium arsenite-induced renal dysfunction, which may be attributed to its anti-oxidant activity and modulation of renal eNOS expression in rat kidneys.
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Affiliation(s)
- Sumedha Sharma
- Department of Pharmaceutical Sciences, Faculty of Life Sciences, Guru Nanak Dev University, Amritsar, India
| | - Tajpreet Kaur
- Department of Pharmaceutical Sciences, Faculty of Life Sciences, Guru Nanak Dev University, Amritsar, India.,Department of Pharmacology, Khalsa College of Pharmacy, Amritsar, India
| | - Ashwani Kumar Sharma
- Department of Pharmaceutical Sciences, Faculty of Life Sciences, Guru Nanak Dev University, Amritsar, India
| | - Balbir Singh
- Department of Pharmaceutical Sciences, Faculty of Life Sciences, Guru Nanak Dev University, Amritsar, India
| | - Devendra Pathak
- Department of Veterinary Anatomy, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, India
| | | | - Amrit Pal Singh
- Department of Pharmaceutical Sciences, Faculty of Life Sciences, Guru Nanak Dev University, Amritsar, India
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18
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Archer M, Dogra N, Dovey Z, Ganta T, Jang HS, Khusid JA, Lantz A, Mihalopoulos M, Stockert JA, Zahalka A, Björnebo L, Gaglani S, Noh MR, Kaplan SA, Mehrazin R, Badani KK, Wiklund P, Tsao K, Lundon DJ, Mohamed N, Lucien F, Padanilam B, Gupta M, Tewari AK, Kyprianou N. Role of α- and β-adrenergic signaling in phenotypic targeting: significance in benign and malignant urologic disease. Cell Commun Signal 2021; 19:78. [PMID: 34284799 PMCID: PMC8290582 DOI: 10.1186/s12964-021-00755-6] [Citation(s) in RCA: 9] [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: 05/05/2021] [Accepted: 05/28/2021] [Indexed: 01/17/2023] Open
Abstract
The urinary tract is highly innervated by autonomic nerves which are essential in urinary tract development, the production of growth factors, and the control of homeostasis. These neural signals may become dysregulated in several genitourinary (GU) disease states, both benign and malignant. Accordingly, the autonomic nervous system is a therapeutic target for several genitourinary pathologies including cancer, voiding dysfunction, and obstructing nephrolithiasis. Adrenergic receptors (adrenoceptors) are G-Protein coupled-receptors that are distributed throughout the body. The major function of α1-adrenoceptors is signaling smooth muscle contractions through GPCR and intracellular calcium influx. Pharmacologic intervention of α-and β-adrenoceptors is routinely and successfully implemented in the treatment of benign urologic illnesses, through the use of α-adrenoceptor antagonists. Furthermore, cell-based evidence recently established the antitumor effect of α1-adrenoceptor antagonists in prostate, bladder and renal tumors by reducing neovascularity and impairing growth within the tumor microenvironment via regulation of the phenotypic epithelial-mesenchymal transition (EMT). There has been a significant focus on repurposing the routinely used, Food and Drug Administration-approved α1-adrenoceptor antagonists to inhibit GU tumor growth and angiogenesis in patients with advanced prostate, bladder, and renal cancer. In this review we discuss the current evidence on (a) the signaling events of the autonomic nervous system mediated by its cognate α- and β-adrenoceptors in regulating the phenotypic landscape (EMT) of genitourinary organs; and (b) the therapeutic significance of targeting this signaling pathway in benign and malignant urologic disease. Video abstract.
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Affiliation(s)
- M. Archer
- Department of Urology, Icahn School of Medicine at Mount Sinai, 6th Floor, 1425 Madison Avenue, New York, NY 10029 USA
| | - N. Dogra
- Department of Pathology and Molecular and Cell Based Medicine, Icahn School of Medicine at Mount Sinai, New York, NY USA
- Department of Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY USA
| | - Z. Dovey
- Department of Urology, Icahn School of Medicine at Mount Sinai, 6th Floor, 1425 Madison Avenue, New York, NY 10029 USA
| | - T. Ganta
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY USA
- Division of Hematology and Medical Oncology, Mount Sinai Hospital, New York, NY USA
| | - H.-S. Jang
- Department of Urology, Icahn School of Medicine at Mount Sinai, 6th Floor, 1425 Madison Avenue, New York, NY 10029 USA
| | - J. A. Khusid
- Department of Urology, Icahn School of Medicine at Mount Sinai, 6th Floor, 1425 Madison Avenue, New York, NY 10029 USA
| | - A. Lantz
- Department of Molecular Medicine and Surgery, Section of Urology, Karolinska Institute, Stockholm, Sweden
- Department of Medical Epidemiology and Biostatistics, Karolinska Institute, Stockholm, Sweden
| | - M. Mihalopoulos
- Department of Urology, Icahn School of Medicine at Mount Sinai, 6th Floor, 1425 Madison Avenue, New York, NY 10029 USA
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY USA
| | - J. A. Stockert
- Department of Urology, Icahn School of Medicine at Mount Sinai, 6th Floor, 1425 Madison Avenue, New York, NY 10029 USA
| | - A. Zahalka
- Department of Urology, Icahn School of Medicine at Mount Sinai, 6th Floor, 1425 Madison Avenue, New York, NY 10029 USA
| | - L. Björnebo
- Department of Medical Epidemiology and Biostatistics, Karolinska Institute, Stockholm, Sweden
| | - S. Gaglani
- Department of Urology, Icahn School of Medicine at Mount Sinai, 6th Floor, 1425 Madison Avenue, New York, NY 10029 USA
| | - M. R. Noh
- Department of Urology, Icahn School of Medicine at Mount Sinai, 6th Floor, 1425 Madison Avenue, New York, NY 10029 USA
| | - S. A. Kaplan
- Department of Urology, Icahn School of Medicine at Mount Sinai, 6th Floor, 1425 Madison Avenue, New York, NY 10029 USA
| | - R. Mehrazin
- Department of Urology, Icahn School of Medicine at Mount Sinai, 6th Floor, 1425 Madison Avenue, New York, NY 10029 USA
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY USA
| | - K. K. Badani
- Department of Urology, Icahn School of Medicine at Mount Sinai, 6th Floor, 1425 Madison Avenue, New York, NY 10029 USA
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY USA
| | - P. Wiklund
- Department of Urology, Icahn School of Medicine at Mount Sinai, 6th Floor, 1425 Madison Avenue, New York, NY 10029 USA
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY USA
| | - K. Tsao
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY USA
- Division of Hematology and Medical Oncology, Mount Sinai Hospital, New York, NY USA
| | - D. J. Lundon
- Department of Urology, Icahn School of Medicine at Mount Sinai, 6th Floor, 1425 Madison Avenue, New York, NY 10029 USA
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY USA
| | - N. Mohamed
- Department of Urology, Icahn School of Medicine at Mount Sinai, 6th Floor, 1425 Madison Avenue, New York, NY 10029 USA
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY USA
| | - F. Lucien
- Department of Urology, Mayo Clinic, Rochester, MN USA
| | - B. Padanilam
- Department of Urology, Icahn School of Medicine at Mount Sinai, 6th Floor, 1425 Madison Avenue, New York, NY 10029 USA
| | - M. Gupta
- Department of Urology, Icahn School of Medicine at Mount Sinai, 6th Floor, 1425 Madison Avenue, New York, NY 10029 USA
| | - A. K. Tewari
- Department of Urology, Icahn School of Medicine at Mount Sinai, 6th Floor, 1425 Madison Avenue, New York, NY 10029 USA
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY USA
| | - N. Kyprianou
- Department of Urology, Icahn School of Medicine at Mount Sinai, 6th Floor, 1425 Madison Avenue, New York, NY 10029 USA
- Department of Pathology and Molecular and Cell Based Medicine, Icahn School of Medicine at Mount Sinai, New York, NY USA
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY USA
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY USA
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19
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Gatzoflias S, Hao S, Ferreri NR. Induction of renal tumor necrosis factor-α and other autacoids and the beneficial effects of hypertonic saline in acute decompensated heart failure. Am J Physiol Renal Physiol 2021; 320:F1159-F1164. [PMID: 33969695 DOI: 10.1152/ajprenal.00686.2020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Although administration of hypertonic saline (HSS) in combination with diuretics has yielded improved weight loss, preservation of renal function, and reduction in hospitalization time in the clinical setting of patients with acute decompensated heart failure (ADHF), the mechanisms that underlie these beneficial effects remain unclear and additional studies are needed before this approach can be adopted on a more consistent basis. As high salt conditions stimulate the production of several renal autacoids that exhibit natriuretic effects, renal physiologists can contribute to the understanding of mechanisms by which HSS leads to increased diuresis both as an individual therapy as well as in combination with loop diuretics. For instance, since HSS increases TNF-α production by proximal tubule and thick ascending limb of Henle's loop epithelial cells, this article is aimed at highlighting how the effects of TNF-α produced by these cell types may contribute to the beneficial effects of HSS in patients with ADHF. Although TNF-α produced by infiltrating macrophages and T cells exacerbates and attenuates renal damage, respectively, production of this cytokine within the tubular compartment of the kidney functions as an intrinsic regulator of blood pressure and Na+ homeostasis via mechanisms along the nephron related to inhibition of Na+-K+-2Cl- cotransporter isoform 2 activity and angiotensinogen expression. Thus, in the clinical setting of ADHF and hyponatremia, induction of TNF-α production along the nephron by administration of HSS may attenuate Na+-K+-2Cl- cotransporter isoform 2 activity and angiotensinogen expression as part of a mechanism that prevents excessive Na+ reabsorption in the thick ascending limb of Henle's loop, thereby mitigating volume overload.
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Affiliation(s)
| | - Shoujin Hao
- Department of Pharmacology, New York Medical College, Valhalla, New York
| | - Nicholas R Ferreri
- Department of Pharmacology, New York Medical College, Valhalla, New York
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20
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Kord A, Park SJ, Rao A, Eppurath A, Lipnik A, Ray CE. Postcontrast Acute Kidney Injury After Transarterial Chemoembolization. Semin Intervent Radiol 2021; 38:139-143. [PMID: 33883811 PMCID: PMC8049752 DOI: 10.1055/s-0041-1724016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Ali Kord
- Division of Interventional Radiology, Department of Radiology, University of Illinois College of Medicine, Chicago, Illinois
| | - Simon J. Park
- Division of Interventional Radiology, Department of Radiology, University of Illinois College of Medicine, Chicago, Illinois
| | - Amith Rao
- Division of Interventional Radiology, Department of Radiology, University of Illinois College of Medicine, Chicago, Illinois
| | - Atul Eppurath
- Division of Interventional Radiology, Department of Radiology, University of Illinois College of Medicine, Chicago, Illinois
| | - Andrew Lipnik
- Division of Interventional Radiology, Department of Radiology, University of Illinois College of Medicine, Chicago, Illinois
| | - Charles E. Ray
- Division of Interventional Radiology, Department of Radiology, University of Illinois College of Medicine, Chicago, Illinois
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21
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Pieretti JC, Junho CVC, Carneiro-Ramos MS, Seabra AB. H 2S- and NO-releasing gasotransmitter platform: A crosstalk signaling pathway in the treatment of acute kidney injury. Pharmacol Res 2020; 161:105121. [PMID: 32798649 PMCID: PMC7426260 DOI: 10.1016/j.phrs.2020.105121] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 07/29/2020] [Accepted: 07/31/2020] [Indexed: 12/15/2022]
Abstract
Acute kidney injury (AKI) is a syndrome affecting most patients hospitalized due to kidney disease; it accounts for 15 % of patients hospitalized in intensive care units worldwide. AKI is mainly caused by ischemia and reperfusion (IR) injury, which temporarily obstructs the blood flow, increases inflammation processes and induces oxidative stress. AKI treatments available nowadays present notable disadvantages, mostly for patients with other comorbidities. Thus, it is important to investigate different approaches to help minimizing side effects such as the ones observed in patients subjected to the aforementioned treatments. Therefore, the aim of the current review is to highlight the potential of two endogenous gasotransmitters - hydrogen sulfide (H2S) and nitric oxide (NO) - and their crosstalk in AKI treatment. Both H2S and NO are endogenous signalling molecules involved in several physiological and pathophysiological processes, such as the ones taking place in the renal system. Overall, these molecules act by decreasing inflammation, controlling reactive oxygen species (ROS) concentrations, activating/inactivating pro-inflammatory cytokines, as well as promoting vasodilation and decreasing apoptosis, hypertrophy and autophagy. Since these gasotransmitters are found in gaseous state at environmental conditions, they can be directly applied by inhalation, or in combination with H2S and NO donors, which are compounds capable of releasing these molecules at biological conditions, thus enabling higher stability and slow release of NO and H2S. Moreover, the combination between these donor compounds and nanomaterials has the potential to enable targeted treatments, reduce side effects and increase the potential of H2S and NO. Finally, it is essential highlighting challenges to, and perspectives in, pharmacological applications of H2S and NO to treat AKI, mainly in combination with nanoparticulated delivery platforms.
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Affiliation(s)
- Joana Claudio Pieretti
- Center for Natural and Human Sciences (CCNH), Federal University of ABC (UFABC), Santo André, SP, Brazil
| | | | | | - Amedea Barozzi Seabra
- Center for Natural and Human Sciences (CCNH), Federal University of ABC (UFABC), Santo André, SP, Brazil.
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Vangaveti S, Das P, Kumar VL. Metformin and silymarin afford protection in cyclosporine A induced hepatorenal toxicity in rat by modulating redox status and inflammation. J Biochem Mol Toxicol 2020; 35:e22614. [PMID: 32886845 DOI: 10.1002/jbt.22614] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 07/17/2020] [Accepted: 08/15/2020] [Indexed: 12/14/2022]
Abstract
The use of cyclosporine A (CsA) as an immunosuppressive agent is often limited owing to its hepatotoxic and nephrotoxic properties. The present study was designed to evaluate the protective effect of metformin and silymarin in a rat model of CsA induced hepatorenal toxicity. The study included seven groups of Wistar albino rats (n = 6 per group): normal control, experimental control (CsA alone, 25 mg/kg), CsA + metformin (50 and 500 mg/kg), CsA + silymarin (50 and 200 mg/kg) and CsA + vitamin E (100 mg/kg). All the drugs were given daily for a period of 21 days by oral gavage and their effect was evaluated on serum levels of organ function markers (serum glutamate pyruvate transaminase, serum glutamate oxaloacetate transaminase, bilirubin, urea/blood urea nitrogen, creatinine), markers of oxidative stress (thiobarbituric acid reactive substances, glutathione, superoxide dismutase), inflammation (nitrite, myeloperoxidase, tumour necrosis factor-alpha, prostaglandin E2 ), apoptosis (terminal deoxynucleotidyl transferase dUTP nick end labelling positivity) in addition to tissue histology, cyclooxygenase (COX)-2 and inducible nitric oxide synthase (iNOS) immunoreactivity. Administration of metformin and silymarin along with CsA ameliorated functional damage to liver and kidneys in a dose-dependent manner. Significant and comparable improvement in the tissue levels of oxidative stress, inflammation, apoptotic markers was also observed following treatment with both the test drugs. Normalization of histology scores, as well as COX-2 and iNOS immunoreactivity scores, further strengthened these findings. The hepatoprotective and nephroprotective effects of metformin and silymarin were comparable and matched with that of reference drug, vitamin E. The findings of the present study suggest that both metformin and silymarin have a potential for clinical use in patients receiving long-term CsA treatment to maintain their liver and kidney functions.
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Affiliation(s)
- Sneha Vangaveti
- Department of Pharmacology, All India Institute of Medical Sciences, New Delhi, India
| | - Prasenjit Das
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, India
| | - Vijay L Kumar
- Department of Pharmacology, All India Institute of Medical Sciences, New Delhi, India
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Hemolysis Derived Products Toxicity and Endothelium: Model of the Second Hit. Toxins (Basel) 2019; 11:toxins11110660. [PMID: 31766155 PMCID: PMC6891750 DOI: 10.3390/toxins11110660] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 11/02/2019] [Accepted: 11/06/2019] [Indexed: 12/16/2022] Open
Abstract
Vascular diseases are multifactorial, often requiring multiple challenges, or ‘hits’, for their initiation. Intra-vascular hemolysis illustrates well the multiple-hit theory where a first event lyses red blood cells, releasing hemolysis-derived products, in particular cell-free heme which is highly toxic for the endothelium. Physiologically, hemolysis derived-products are rapidly neutralized by numerous defense systems, including haptoglobin and hemopexin which scavenge hemoglobin and heme, respectively. Likewise, cellular defense mechanisms are involved, including heme-oxygenase 1 upregulation which metabolizes heme. However, in cases of intra-vascular hemolysis, those systems are overwhelmed. Heme exerts toxic effects by acting as a damage-associated molecular pattern and promoting, together with hemoglobin, nitric oxide scavenging and ROS production. In addition, it activates the complement and the coagulation systems. Together, these processes lead to endothelial cell injury which triggers pro-thrombotic and pro-inflammatory phenotypes. Moreover, among endothelial cells, glomerular ones display a particular susceptibility explained by a weaker capacity to counteract hemolysis injury. In this review, we illustrate the ‘multiple-hit’ theory through the example of intra-vascular hemolysis, with a particular focus on cell-free heme, and we advance hypotheses explaining the glomerular susceptibility observed in hemolytic diseases. Finally, we describe therapeutic options for reducing endothelial injury in hemolytic diseases.
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Pasten C, Alvarado C, Rocco J, Contreras L, Aracena P, Liberona J, Suazo C, Michea L, Irarrázabal CE. l-NIL prevents the ischemia and reperfusion injury involving TLR-4, GST, clusterin, and NFAT-5 in mice. Am J Physiol Renal Physiol 2019; 316:F624-F634. [DOI: 10.1152/ajprenal.00398.2018] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
On renal ischemia-reperfusion (I/R) injury, recruitment of neutrophils during the inflammatory process promotes local generation of oxygen and nitrogen reactive species, which, in turn, are likely to exacerbate tissue damage. The mechanism by which inducible nitric oxide synthase (iNOS) is involved in I/R has not been elucidated. In this work, the selective iNOS inhibitor l- N6-(1-iminoethyl)lysine (l-NIL) and the NOS substrate l-arginine were employed to understand the role of NOS activity on the expression of particular target genes and the oxidative stress elicited after a 30-min of bilateral renal ischemia, followed by 48-h reperfusion in Balb/c mice. The main findings of the present study were that pharmacological inhibition of iNOS with l-NIL during an I/R challenge of mice kidney decreased renal injury, prevented tissue loss of integrity, and improved renal function. Several novel findings regarding the molecular mechanism by which iNOS inhibition led to these protective effects are as follows: 1) a prevention of the I/R-related increase in expression of Toll-like receptor 4 (TLR-4), and its downstream target, IL-1β; 2) reduced oxidative stress following the I/R challenge; noteworthy, this study shows the first evidence of glutathione S-transferase (GST) inactivation following kidney I/R, a phenomenon fully prevented by iNOS inhibition; 3) increased expression of clusterin, a survival autophagy component; and 4) increased expression of nuclear factor of activated T cells 5 (NFAT-5) and its target gene aquaporin-1. In conclusion, prevention of renal damage following I/R by the pharmacological inhibition of iNOS with l-NIL was associated with the inactivation of proinflammatory pathway triggered by TLR-4, oxidative stress, renoprotection (autophagy inactivation), and NFAT-5 signaling pathway.
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Affiliation(s)
- Consuelo Pasten
- Laboratorio de Fisiología Integrativa y Molecular, Centro de Investigación Biomédica, Facultad de Medicina, Universidad de los Andes, Santiago, Chile
| | - Cristóbal Alvarado
- School of Medicine and Science, Universidad San Sebastián, Concepción, Chile
- School of Medicine, Universidad Católica de la Santísima Concepción, Concepción, Chile
| | - Jocelyn Rocco
- Laboratorio de Fisiología Integrativa y Molecular, Centro de Investigación Biomédica, Facultad de Medicina, Universidad de los Andes, Santiago, Chile
| | - Luis Contreras
- Department of Pathological Anatomy, Clínica Universidad de los Andes, Santiago, Chile
| | - Paula Aracena
- School of Medicine and Science, Universidad San Sebastián, Concepción, Chile
| | - Jéssica Liberona
- Institute of Biomedical Sciences, School of Medicine, Universidad de Chile, Santiago, Chile
| | - Cristian Suazo
- Laboratorio de Fisiología Integrativa y Molecular, Centro de Investigación Biomédica, Facultad de Medicina, Universidad de los Andes, Santiago, Chile
| | - Luis Michea
- Institute of Biomedical Sciences, School of Medicine, Universidad de Chile, Santiago, Chile
- Division of Nephrology, Department of Medicine, Hospital Clínico Universidad de Chile, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
| | - Carlos E. Irarrázabal
- Laboratorio de Fisiología Integrativa y Molecular, Centro de Investigación Biomédica, Facultad de Medicina, Universidad de los Andes, Santiago, Chile
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Estradiol attenuates ischemia reperfusion-induced acute kidney injury through PPAR-γ stimulated eNOS activation in rats. Mol Cell Biochem 2018; 453:1-9. [PMID: 30194582 DOI: 10.1007/s11010-018-3427-4] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Accepted: 08/16/2018] [Indexed: 12/18/2022]
Abstract
We investigated the involvement of peroxisome proliferator activated receptor-γ (PPAR-γ)/endothelial nitric oxide synthase (eNOS) pathway in estradiol mediated protection against ischemia reperfusion (I/R)-induced acute kidney injury (AKI) in rats. To induce AKI, rats underwent 40 min of bilateral renal ischemia followed by 24 h of reperfusion. I/R-induced kidney damage was quantified by measuring serum creatinine, creatinine clearance, urea nitrogen, uric acid, potassium, fractional excretion of sodium, microproteinuria, and renal oxidative stress (thiobarbituric acid reactive substances, superoxide anion generation, and reduced glutathione). Hematoxylin eosin stain demonstrated renal histology, while renal expression of apoptotic markers (Bcl-2, Bax), PPAR-γ and eNOS were quantified by immunohistochemistry. Estradiol (1 mg/kg, i.p.) was administered 30 min before I/R in rats. In separate groups, PPAR-γ antagonist, BADGE (30 mg/kg, i.p.), and NOS inhibitor, L-NAME (20 mg/kg, i.p.) were administered prior to estradiol treatment, which was followed by I/R in rats. I/R caused significant renal damage as demonstrated by biochemical (serum/urine), renal oxidative stress and histological changes alongwith increased expression of Bax and decreased levels of Bcl-2, PPAR-γ and eNOS, which were prevented by estradiol. Pre-treatment with BADGE and L-NAME abolished estradiol mediated renoprotection. Notably, I/R + estradiol + BADGE group revealed decreased expression of PPAR-γ and eNOS in renal tissues. In I/R + estradiol + L-NAME group, eNOS expression was reduced while PPAR-γ levels remained unchanged. These results suggest that estradiol modulates PPAR-γ which consequently regulates eNOS expression in rat kidneys. We conclude that estradiol protects against I/R-induced AKI through PPAR-γ stimulated eNOS activation in rats.
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Oxidative stress induces BH 4 deficiency in male, but not female, SHR. Biosci Rep 2018; 38:BSR20180111. [PMID: 29899168 PMCID: PMC6028750 DOI: 10.1042/bsr20180111] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 06/08/2018] [Accepted: 06/13/2018] [Indexed: 02/07/2023] Open
Abstract
We previously published that female spontaneously hypertensive rats (SHR) have significantly greater nitric oxide (NO) bioavailability and NO synthase (NOS) enzymatic activity in the renal inner medulla (IM) compared with age-matched males, although the mechanism responsible remains unknown. Tetrahydrobiopterin (BH4) is a critical cofactor required for NO generation, and decreases in BH4 as a result of increases in oxidative stress have been implicated in the pathogenesis of hypertension. As male SHR are known to have higher levels of oxidative stress compared with female SHR, we hypothesized that relative BH4 deficiency induced by oxidative stress in male SHR results in lower levels of NOS activity in renal IM compared with females. Twelve-week-old male and female SHR were randomized to receive tempol (30 mg/kg/day via drinking water) or vehicle for 2 weeks. Tempol treatment did not affect blood pressure (BP) in either sex, but reduced peroxynitrite levels only in males. Females had more total biopterin, dihydrobiopterin (BH2), and BH4 levels in renal IMs than males, and tempol treatment eliminated these sex differences. Females had greater total NOS activity in the renal IM than males, and adding exogenous BH4 to the assay increased NOS activity in both sexes. This sex difference in total NOS and the effect of exogenous BH4 were abolished with tempol treatment. We conclude that higher oxidative stress in male SHR results in a relative deficiency of BH4 compared with females, resulting in diminished renal NOS activity in the male.
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Uson-Lopez RA, Kataoka S, Mukai Y, Sato S, Kurasaki M. Melinjo (Gnetum gnemon) Seed Extract Consumption during Lactation Improved Vasodilation and Attenuated the Development of Hypertension in Female Offspring of Fructose-Fed Pregnant Rats. Birth Defects Res 2017; 110:27-34. [PMID: 28925591 DOI: 10.1002/bdr2.1109] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 06/29/2017] [Accepted: 07/20/2017] [Indexed: 01/10/2023]
Abstract
BACKGROUND Fructose intake has been correlated with increased prevalence of metabolic disorders including hypertension. In pregnant rats, fructose intake has been reported to have adverse effects on the health of its offspring. This study investigated the effects of gestational maternal fructose consumption and if supplementation with melinjo seed extracts to the maternal diet during lactation could benefit the offspring in later life. METHODS Pregnant rats were randomly divided into three groups: untreated (CC), fructose-treated (FC), and fructose and melinjo-treated (FM). FC and FM groups received 100 g/L of D(-)-fructose solution by means of the drinking water during gestation while CC received normal drinking water. During lactation, CC and FC groups were given standard commercial laboratory diet, while the FM group was given commercial laboratory diet with 0.1% melinjo seed extracts. After weaning, the offspring were given normal drinking water and standard commercial diet until week 17. The blood pressure of the offspring was monitored until the 16th week. During week 17, the offspring were killed, and the kidneys were collected and analyzed. RESULTS The level of renal phosphorylated AMP-activated protein kinase (pAMPK) in FM of 17-week female offspring was significantly higher compared with FC and CC groups. Maternal fructose intake down-regulated the renal endothelial isoform of nitric oxide synthetase expression in FC and maternal melinjo seed extract consumption maintained renal endothelial isoform of nitric oxide synthetase expression in FM of 17-week female offspring. In addition, maternal melinjo seed extract intake during lactation lowered the systolic blood pressure in FM of 17-week female offspring. CONCLUSION Female offspring were more vulnerable to the effects of placental fructose and melinjo seed extracts, suggesting sex-specific sensitivities. In summary, our data show that melinjo seed extract consumption during lactation improved vasodilation and attenuated the development of hypertension in the 17-week female offspring of fructose-fed pregnant rats. Birth Defects Research 110:27-34, 2018. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Rachael A Uson-Lopez
- Course of Environmental Adaptation Science, Graduate School of Environmental Science, Hokkaido University, Sapporo, Japan
| | - Saori Kataoka
- Department of Nutrition, Faculty of Health Sciences, Aomori University of Health and Welfare, Aomori, Japan
| | - Yuuka Mukai
- School of Nutrition and Dietetics, Faculty of Health and Social Work, Kanagawa University of Human Services, Kanagawa, Japan
| | - Shin Sato
- Department of Nutrition, Faculty of Health Sciences, Aomori University of Health and Welfare, Aomori, Japan
| | - Masaaki Kurasaki
- Course of Environmental Adaptation Science, Graduate School of Environmental Science, Hokkaido University, Sapporo, Japan.,Group of Environmental Adaptation Science, Faculty of Environmental Earth Science, Hokkaido University, Sapporo, Japan
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Kazi RN, Sattar MA, Johns EJ. Antidiuretic and antinatriuretic response to high salt load in normotensive Wistar-Kyoto rats: Role of alpha-1A-adrenoreceptors. AUTONOMIC & AUTACOID PHARMACOLOGY 2017; 37:13-18. [PMID: 28332265 DOI: 10.1111/aap.12053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Revised: 12/29/2016] [Accepted: 01/18/2017] [Indexed: 06/06/2023]
Abstract
Altered renal adrenergic responses have been recognized as pathophysiological responses to high salt intake. This study aims to investigate the influence of 6 weeks of high salt diet on α1A -adrenoceptor regulation of renal tubular antinatriuretic and antidiuretic response in normal Wistar Kyoto rats. To achieve the above objective, antinatriuretic and antidiuretic response to phenylephrine was measured in the absence and presence of 5-methylurapidil (5-MeU) using the inulin clearance method. Systemic mean arterial blood pressure and renal haemodynamics were also measured simultaneously. Six weeks of high salt intake in Wistar-Kyoto (WKY) rats did not bring any significant increase in mean arterial blood pressure. WKY rat on high salt diet (WKYHNa) showed an exaggerated increase in absolute and fractional sodium excretion. There was a significant involvement of α1A -adrenoceptor in carrying out renal tubular antinatriuretic and antidiuretic response in Wistar Kyoto rats on normal sodium diet (WKYNNa). However, α1A -adrenoceptor played a minimal role in handling the tubular reabsorptive response in WKY rats on high salt diet.
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Affiliation(s)
- R N Kazi
- College of Applied Medical Science, Prince Sattam Bin Abdul-Aziz University, Wadi Ad Dawaser, Saudi Arabia
- School of Pharmaceutical Sciences, University Sains Malaysia, Penang, Malaysia
| | - M A Sattar
- School of Pharmaceutical Sciences, University Sains Malaysia, Penang, Malaysia
| | - E J Johns
- Department of Physiology, Aras Windle, University College Cork, Cork, Ireland
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Abstract
Hypertension is a common comorbidity in patients with impaired kidney function. The kidney exerts a marked degree of control over blood pressure through various mechanisms, such as by regulating sodium balance and hormone secretion through the activity of the renin-angiotensin system. The kidney is susceptible to injury, and if already damaged can be at risk of further loss of function as a consequence of elevated blood pressure. Once elevated blood pressure is identified, a combination of sensible lifestyle measures, such as sodium restriction and weight loss, with pharmacological intervention to reduce blood pressure will usually achieve blood pressure goals. In this Review, we outline the importance of blood pressure control for patients with chronic kidney disease (CKD), the mechanisms that affect blood pressure control, and the basis for non-drug and drug therapies. We further discuss the rationale for <140 mmHg systolic and <90 mmHg diastolic targets for blood pressure in patients with CKD, with consideration for tighter targets in the setting of proteinuria.
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Sarı E, Yeşilkaya E, Bolat A, Topal T, Altan B, Fidancı K, Saldır M, Erdem G, Gülgün M, Gülcan Kurt Y, Güven A. Metabolic and Histopathological Effects of Fructose Intake During Pregestation, Gestation and Lactation in Rats and their Offspring. J Clin Res Pediatr Endocrinol 2015; 7:19-26. [PMID: 25800472 PMCID: PMC4439888 DOI: 10.4274/jcrpe.1776] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
OBJECTIVE Studies have demonstrated a significant relationship between maternal fructose intake and metabolic outcome in their offspring. However, there is a paucity of data about the long-term effects of fructose intake on the offspring of fructose-fed dams. Therefore, we planned a study to evaluate the long-term effects of fructose intake on the offspring of dam rats fed a high-fructose diet. METHODS Sixteen virgin female Sprague-Dawley rats were divided into two groups. Group 1 received a regular diet and Group 2 a high-fructose diet. Both groups received their experimental diets for 8 weeks before conception. They were mated and continued to feed with their experimental diet during mating and during their pregnancy and lactation periods. After weaning, the offspring from each group were divided into two groups. Group 1A received a regular diet, Group 1B - a fructose diet, Group 2A - a regular diet and Group 2B received a fructose diet. After weaning, the offspring were anesthetized and blood samples were collected for biochemical analysis. Liver, kidney and retroperitoneal adipose tissue were harvested for histopathological examination. Primary antibodies against inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) were determined as early inflammation markers. RESULTS After weaning, while daily water consumption was found to be significantly higher in Groups 2B and 1B (p<0.01), daily laboratory chow consumption was significantly lower in Groups 1A and 2A (p<0.01). Body weight was significantly higher in Groups 1B and 2B (p<0.01). Serum glucose, triglyceride, low-density lipoprotein cholesterol and very low-density lipoprotein cholesterol levels were found to be increased and high-density lipoprotein cholesterol levels decreased in Group 2B (p<0.05). The intensities of iNOS staining in the retroperitoneal adipose tissue, COX-2 staining in the liver and both iNOS and COX-2 staining in the kidney were higher in Group 2B (p<0.05). CONCLUSION Based on our findings, we believe that the offspring of dams which received a high fructose intake during their pregestation, gestation and lactation periods are at risk of developing metabolic syndrome in their later life only if they continue to receive a high intake of fructose. We therefore propose that the risk of developing metabolic syndrome can probably be reduced by modifying the diet of the offspring after weaning.
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Affiliation(s)
- Erkan Sarı
- Gülhane Military Medical Academy, Department of Pediatric Endocrinology, Ankara, Turkey. E-mail:
| | - Ediz Yeşilkaya
- Gülhane Military Medical Academy, Department of Pediatric Endocrinology, Ankara, Turkey
,* Address for Correspondence: Gülhane Military Medical Academy, Department of Pediatric Endocrinology, Ankara, Turkey Phone: +90 312 304 18 98 E-mail:
| | - Ahmet Bolat
- Gülhane Military Medical Academy, Department of Pediatric Endocrinology, Ankara, Turkey
| | - Turgut Topal
- Gülhane Military Medical Academy, Department of Physiology, Ankara, Turkey
| | - Bilal Altan
- Gülhane Military Medical Academy, Department of Pediatric Surgery, Ankara, Turkey
| | - Kürşat Fidancı
- Gülhane Military Medical Academy, Department of Pediatric Endocrinology, Ankara, Turkey
| | - Mehmet Saldır
- Gülhane Military Medical Academy, Department of Pediatric Endocrinology, Ankara, Turkey
| | - Galip Erdem
- Gülhane Military Medical Academy, Department of Pediatric Endocrinology, Ankara, Turkey
| | - Mustafa Gülgün
- Gülhane Military Medical Academy, Department of Pediatric Endocrinology, Ankara, Turkey
| | - Yasemin Gülcan Kurt
- Gulhane Military Medical Academy, Department of Biochemistry, Ankara, Turkey
| | - Ahmet Güven
- Gülhane Military Medical Academy, Department of Pediatric Surgery, Ankara, Turkey
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