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Faniyan TS, Zhang X, Morgan DA, Robles J, Bathina S, Brookes PS, Rahmouni K, Perry RJ, Chhabra KH. A kidney-hypothalamus axis promotes compensatory glucose production in response to glycosuria. eLife 2024; 12:RP91540. [PMID: 39082939 PMCID: PMC11290820 DOI: 10.7554/elife.91540] [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] [Indexed: 08/02/2024] Open
Abstract
The kidneys facilitate energy conservation through reabsorption of nutrients including glucose. Almost all the filtered blood glucose is reabsorbed by the kidneys. Loss of glucose in urine (glycosuria) is offset by an increase in endogenous glucose production to maintain normal energy supply in the body. How the body senses this glucose loss and consequently enhances glucose production is unclear. Using renal Slc2a2 (also known as Glut2) knockout mice, we demonstrate that elevated glycosuria activates the hypothalamic-pituitary-adrenal axis, which in turn drives endogenous glucose production. This phenotype was attenuated by selective afferent renal denervation, indicating the involvement of the afferent nerves in promoting the compensatory increase in glucose production. In addition, through plasma proteomics analyses we observed that acute phase proteins - which are usually involved in the body's defense mechanisms against a threat - were the top candidates which were either upregulated or downregulated in renal Slc2a2 KO mice. Overall, afferent renal nerves contribute to promoting endogenous glucose production in response to elevated glycosuria and loss of glucose in urine is sensed as a biological threat in mice. These findings may be useful in improving the efficiency of drugs like SGLT2 inhibitors that are intended to treat hyperglycemia by enhancing glycosuria but are met with a compensatory increase in endogenous glucose production.
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Affiliation(s)
- Tumininu S Faniyan
- Department of Medicine, Division of Endocrinology, Diabetes, and Metabolism, University of Rochester Medical CenterRochesterUnited States
| | - Xinyi Zhang
- Department of Cellular and Molecular Physiology, Yale UniversityNew HavenUnited States
| | - Donald A Morgan
- Department of Neuroscience and Pharmacology, University of Iowa Carver College of MedicineIowa CityUnited States
| | - Jorge Robles
- Department of Medicine, Division of Endocrinology, Diabetes, and Metabolism, University of Rochester Medical CenterRochesterUnited States
| | - Siresha Bathina
- Department of Medicine, Division of Endocrinology, Diabetes, and Metabolism, University of Rochester Medical CenterRochesterUnited States
| | - Paul S Brookes
- Department of Anesthesiology, University of Rochester Medical CenterRochesterUnited States
| | - Kamal Rahmouni
- Department of Neuroscience and Pharmacology, University of Iowa Carver College of MedicineIowa CityUnited States
| | - Rachel J Perry
- Department of Cellular and Molecular Physiology, Yale UniversityNew HavenUnited States
| | - Kavaljit H Chhabra
- Department of Medicine, Division of Endocrinology, Diabetes, and Metabolism, University of Rochester Medical CenterRochesterUnited States
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Rahmouni K. Neural Circuits Underlying Reciprocal Cardiometabolic Crosstalk: 2023 Arthur C. Corcoran Memorial Lecture. Hypertension 2024; 81:1233-1243. [PMID: 38533662 PMCID: PMC11096079 DOI: 10.1161/hypertensionaha.124.22066] [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] [Indexed: 03/28/2024]
Abstract
The interplay of various body systems, encompassing those that govern cardiovascular and metabolic functions, has evolved alongside the development of multicellular organisms. This evolutionary process is essential for the coordination and maintenance of homeostasis and overall health by facilitating the adaptation of the organism to internal and external cues. Disruption of these complex interactions contributes to the development and progression of pathologies that involve multiple organs. Obesity-associated cardiovascular risks, such as hypertension, highlight the significant influence that metabolic processes exert on the cardiovascular system. This cardiometabolic communication is reciprocal, as indicated by substantial evidence pointing to the ability of the cardiovascular system to affect metabolic processes, with pathophysiological implications in disease conditions. In this review, I outline the bidirectional nature of the cardiometabolic interaction, with special emphasis on the impact that metabolic organs have on the cardiovascular system. I also discuss the contribution of the neural circuits and autonomic nervous system in mediating the crosstalk between cardiovascular and metabolic functions in health and disease, along with the molecular mechanisms involved.
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Affiliation(s)
- Kamal Rahmouni
- Department of Neuroscience and Pharmacology, University of Iowa Carver College of Medicine, Iowa City, Iowa
- Veterans Affairs Health Care System, Iowa City, Iowa
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa
- Fraternal Order of Eagles Diabetes Research Center, University of Iowa Carver College of Medicine, Iowa City, Iowa
- Obesity Research and Education Initiative, University of Iowa Carver College of Medicine, Iowa City, Iowa
- Iowa Neuroscience Institute, University of Iowa Carver College of Medicine, Iowa City, Iowa
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Nistor M, Schmidt M, Klingner C, Klingner C, Matziolis G, Shayganfar S, Schiffner R. Effect of Low-Frequency Renal Nerve Stimulation on Renal Glucose Release during Normoglycemia and a Hypoglycemic Clamp in Pigs. Int J Mol Sci 2024; 25:2041. [PMID: 38396718 PMCID: PMC10888375 DOI: 10.3390/ijms25042041] [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: 12/14/2023] [Revised: 01/22/2024] [Accepted: 01/29/2024] [Indexed: 02/25/2024] Open
Abstract
Previously, we demonstrated that renal denervation in pigs reduces renal glucose release during a hypoglycemic episode. In this study we set out to examine changes in side-dependent renal net glucose release (SGN) through unilateral low-frequency stimulation (LFS) of the renal plexus with a pulse generator (2-5 Hz) during normoglycemia (60 min) and insulin-induced hypoglycemia ≤3.5 mmol/L (75 min) in seven pigs. The jugular vein, carotid artery, renal artery and vein, and both ureters were catheterized for measurement purposes, blood pressure management, and drug and fluid infusions. Para-aminohippurate (PAH) and inulin infusions were used to determine side-dependent renal plasma flow (SRP) and glomerular filtration rate (GFR). In a linear mixed model, LFS caused no change in SRP but decreased sodium excretion (p < 0.0001), as well as decreasing GFR during hypoglycemia (p = 0.0176). In a linear mixed model, only hypoglycemic conditions exerted significant effects on SGN (p = 0.001), whereas LFS did not. In a Wilcoxon signed rank exact test, LFS significantly increased SGN (p = 0.03125) and decreased sodium excretion (p = 0.0017) and urinary flow rate (p = 0.0129) when only considering the first instance LFS followed a preceding period of non-stimulation during normoglycemia. To conclude, this study represents, to our knowledge, the first description of an induction of renal gluconeogenesis by LFS.
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Affiliation(s)
- Marius Nistor
- Orthopaedic Department, Jena University Hospital, 07747 Jena, Germany (G.M.)
| | - Martin Schmidt
- Institute for Biochemistry II, Jena University Hospital, 07747 Jena, Germany;
| | - Carsten Klingner
- Department of Neurology, Jena University Hospital, 07747 Jena, Germany; (C.K.); (C.K.)
| | - Caroline Klingner
- Department of Neurology, Jena University Hospital, 07747 Jena, Germany; (C.K.); (C.K.)
| | - Georg Matziolis
- Orthopaedic Department, Jena University Hospital, 07747 Jena, Germany (G.M.)
| | - Sascha Shayganfar
- Emergency Department, Helios University Clinic Wuppertal, 42283 Wuppertal, Germany;
- Faculty of Health/School of Medicine, Lehrstuhl für Klinische Akut- und Notfallmedizin, Witten/Herdecke University, Alfred-Herrhausen-Straße 50, 58448 Witten, Germany
| | - René Schiffner
- Orthopaedic Department, Jena University Hospital, 07747 Jena, Germany (G.M.)
- Emergency Department, Helios University Clinic Wuppertal, 42283 Wuppertal, Germany;
- Faculty of Health/School of Medicine, Lehrstuhl für Klinische Akut- und Notfallmedizin, Witten/Herdecke University, Alfred-Herrhausen-Straße 50, 58448 Witten, Germany
- Emergency Department, Otto-von-Guericke University, 39120 Magdeburg, Germany
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4
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Cracchiolo M, Ottaviani MM, Panarese A, Strauss I, Vallone F, Mazzoni A, Micera S. Bioelectronic medicine for the autonomic nervous system: clinical applications and perspectives. J Neural Eng 2021; 18. [PMID: 33592597 DOI: 10.1088/1741-2552/abe6b9] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 02/16/2021] [Indexed: 12/11/2022]
Abstract
Bioelectronic medicine (BM) is an emerging new approach for developing novel neuromodulation therapies for pathologies that have been previously treated with pharmacological approaches. In this review, we will focus on the neuromodulation of autonomic nervous system (ANS) activity with implantable devices, a field of BM that has already demonstrated the ability to treat a variety of conditions, from inflammation to metabolic and cognitive disorders. Recent discoveries about immune responses to ANS stimulation are the laying foundation for a new field holding great potential for medical advancement and therapies and involving an increasing number of research groups around the world, with funding from international public agencies and private investors. Here, we summarize the current achievements and future perspectives for clinical applications of neural decoding and stimulation of the ANS. First, we present the main clinical results achieved so far by different BM approaches and discuss the challenges encountered in fully exploiting the potential of neuromodulatory strategies. Then, we present current preclinical studies aimed at overcoming the present limitations by looking for optimal anatomical targets, developing novel neural interface technology, and conceiving more efficient signal processing strategies. Finally, we explore the prospects for translating these advancements into clinical practice.
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Affiliation(s)
- Marina Cracchiolo
- The BioRobotics Institute and Department of Excellence in Robotics & AI, The BioRobotics Institute, Scuola Superiore Sant'Anna, Pisa, Italy
| | - Matteo Maria Ottaviani
- The BioRobotics Institute and Department of Excellence in Robotics & AI, The BioRobotics Institute, Scuola Superiore Sant'Anna, Pisa, Italy
| | - Alessandro Panarese
- The BioRobotics Institute and Department of Excellence in Robotics & AI, The BioRobotics Institute, Scuola Superiore Sant'Anna, Pisa, Italy
| | - Ivo Strauss
- The BioRobotics Institute and Department of Excellence in Robotics & AI, The BioRobotics Institute, Scuola Superiore Sant'Anna, Pisa, Italy
| | - Fabio Vallone
- The BioRobotics Institute and Department of Excellence in Robotics & AI, The BioRobotics Institute, Scuola Superiore Sant'Anna, Pisa, Italy
| | - Alberto Mazzoni
- The BioRobotics Institute and Department of Excellence in Robotics & AI, The BioRobotics Institute, Scuola Superiore Sant'Anna, Pisa, Italy
| | - Silvestro Micera
- The BioRobotics Institute and Department of Excellence in Robotics & AI, The BioRobotics Institute, Scuola Superiore Sant'Anna, Pisa, Italy.,Bertarelli Foundation Chair in Translational NeuroEngineering, Centre for Neuroprosthetics and Institute of Bioengineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
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Pavlov VA, Chavan SS, Tracey KJ. Bioelectronic Medicine: From Preclinical Studies on the Inflammatory Reflex to New Approaches in Disease Diagnosis and Treatment. Cold Spring Harb Perspect Med 2020; 10:a034140. [PMID: 31138538 PMCID: PMC7050582 DOI: 10.1101/cshperspect.a034140] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Bioelectronic medicine is an evolving field in which new insights into the regulatory role of the nervous system and new developments in bioelectronic technology result in novel approaches in disease diagnosis and treatment. Studies on the immunoregulatory function of the vagus nerve and the inflammatory reflex have a specific place in bioelectronic medicine. These studies recently led to clinical trials with bioelectronic vagus nerve stimulation in inflammatory diseases and other conditions. Here, we outline key findings from this preclinical and clinical research. We also point to other aspects and pillars of interdisciplinary research and technological developments in bioelectronic medicine.
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Affiliation(s)
- Valentin A Pavlov
- Center for Biomedical Science and Bioelectronic Medicine, The Feinstein Institute for Medical Research, Northwell Health, Manhasset, New York 11030
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, New York 11550
| | - Sangeeta S Chavan
- Center for Biomedical Science and Bioelectronic Medicine, The Feinstein Institute for Medical Research, Northwell Health, Manhasset, New York 11030
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, New York 11550
| | - Kevin J Tracey
- Center for Biomedical Science and Bioelectronic Medicine, The Feinstein Institute for Medical Research, Northwell Health, Manhasset, New York 11030
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, New York 11550
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Pavlov VA, Tracey KJ. Bioelectronic medicine: updates, challenges and paths forward. Bioelectron Med 2019; 5:1. [PMID: 32232092 PMCID: PMC7098260 DOI: 10.1186/s42234-019-0018-y] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 01/11/2019] [Indexed: 12/30/2022] Open
Affiliation(s)
- Valentin A Pavlov
- 1Center for Biomedical Science and Center for Bioelectronic Medicine, The Feinstein Institute for Medical Research, Northwell Health System, Manhasset, NY USA
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY USA
| | - Kevin J Tracey
- 1Center for Biomedical Science and Center for Bioelectronic Medicine, The Feinstein Institute for Medical Research, Northwell Health System, Manhasset, NY USA
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY USA
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