1
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Caro G, Swedzky J, Guisasola EEB, Solis C, Bringas L, Auderut M, Previtali G, Campetelli AN, Monesterolo NE, Santander VS, Bisig G, Previtali C, Casale CH, Antonelli JFR. Spectroscopic and in silico data indicate that phenolic acids interact with aldose reductase with different degrees of affinity at a single binding site. Int J Biol Macromol 2025; 301:140319. [PMID: 39884623 DOI: 10.1016/j.ijbiomac.2025.140319] [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: 11/23/2024] [Revised: 01/21/2025] [Accepted: 01/23/2025] [Indexed: 02/01/2025]
Abstract
Our previous studies demonstrated that the enzyme aldose reductase (AR) is activated by its interaction with tubulin, a mechanism which can lead to the emergence of secondary diseases in diabetic patients. We also found that different compounds derived from phenolic acid (CAFs) can prevent this interaction and thus AR activation. Here, we used spectroscopic and bioinformatic techniques to explore the interaction between AR and three CAFs: 3-nitrotyrosine (NTyr), Tyrosine (Tyr), and vanillic acid (Van). The results revealed that the CAFs alter the UV-Vis absorption spectrum of AR and significantly quenchAR fluorescence. These changes suggest the formation of stable AR-CAF complexes. Moreover, a single binding site for the CAFs was identified in AR, to which a single molecule of NTyr and at least two molecules of Tyr or Van appear to bind. NTyr showed the most affinity for interacting with the enzyme, followed by Tyr and Van. Binding occurs through a thermodynamically favorable and exothermic process. It involves van der Waals interactions and the creation of hydrogen bonds between the phenol substituent in the CAFs and the side residues in AR. Molecular docking calculations confirmed NTyr as the compound with the most affinity and revealed the multiple interactions that contribute to this affinity. These findings enhance our understanding of the molecular mechanisms through which different CAFs bind to AR and inhibit its interaction with tubulin. As such, they could pave the way for the design of novel adjunctive treatments that complement conventional antihyperglycemic therapies and mitigate complications associated with diabetes mellitus.
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Affiliation(s)
- Gustavo Caro
- INBIAS-CONICET, Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800 Córdoba, Argentina
| | - Julieta Swedzky
- INBIAS-CONICET, Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800 Córdoba, Argentina
| | | | - Claudia Solis
- Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800 Córdoba, Argentina
| | - Lucrecia Bringas
- INBIAS-CONICET, Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800 Córdoba, Argentina
| | - Mariel Auderut
- INBIAS-CONICET, Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800 Córdoba, Argentina
| | - Gabriela Previtali
- INBIAS-CONICET, Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800 Córdoba, Argentina
| | - Alexis Nazareno Campetelli
- INBIAS-CONICET, Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800 Córdoba, Argentina
| | - Noelia Edith Monesterolo
- INBIAS-CONICET, Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800 Córdoba, Argentina
| | - Verónica Silvina Santander
- INBIAS-CONICET, Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800 Córdoba, Argentina
| | - Gastón Bisig
- Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC), UNC-CONICET, Departamento de Química Biológica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, 5000 Córdoba, Argentina
| | - Carlos Previtali
- Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800 Córdoba, Argentina
| | - César Horacio Casale
- INBIAS-CONICET, Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800 Córdoba, Argentina
| | - Juan Franco Rivelli Antonelli
- INBIAS-CONICET, Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800 Córdoba, Argentina.
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2
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Awad K, Abdelhadi M, Awad AM. High Glucose Reduces Influenza and Parainfluenza Virus Productivity by Altering Glycolytic Pattern in A549 Cells. Int J Mol Sci 2025; 26:2975. [PMID: 40243606 PMCID: PMC11989181 DOI: 10.3390/ijms26072975] [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: 02/12/2025] [Revised: 03/18/2025] [Accepted: 03/22/2025] [Indexed: 04/18/2025] Open
Abstract
Influenza A virus is responsible for annual epidemics and occasional pandemics leading to significant mortality and morbidity in human populations. Parainfluenza viruses also contribute to lung infections and chronic lung disease. In this study, we investigated the effect of high glucose on the productivity of influenza A and Sendai (murine parainfluenza type 1) viruses in A549 immortalized cells. A glycolytic pattern of infection was determined by monitoring the release of lactate and phosphofructokinase (PFK) activity in infected and uninfected cells. qRT-PCR was used to analyze the expression of viral and cellular cytokine mRNA levels in cultured cells. The data show that the productivity of both influenza and Sendai viruses was reduced in A549 cells cultured in high-glucose conditions. This was accompanied by increased lactate production and altered PFK activity profile. Endogenous or virus infection-induced interferon β (IFN-β) mRNA expression was significantly decreased in high glucose compared to normal glucose status during early times of infection. Unlike in Sendai virus-infected cells, H1N1 virus reversed the significant increase in transforming growth factor β1 (TGF-β1) mRNA expression due to increased glucose concentration during early infection times. In conclusion, high glucose may have a negative effect on influenza and parainfluenza productivity in vitro. This effect may be considered when evaluating personalized therapeutic/diagnostic markers in infection-accompanied hyperglycemic status.
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Affiliation(s)
- Kareem Awad
- Institute of Biomedicine, Faculty of Medicine, University of Turku, 20520 Turku, Finland
- Institute of Pharmaceutical and Drug Industries Research, National Research Centre, Giza 12622, Egypt
- Medical Faculty, Ruprecht-Karls-University of Heidelberg, 69117 Heidelberg, Germany
- Academy of Scientific Research & Technology (ASRT-STARS), Cairo 11516, Egypt
| | - Maha Abdelhadi
- Institute of Medical Research and Clinical Studies, National Research Center, Giza 12622, Egypt;
| | - Ahmed M. Awad
- Research and Innovation Office, California State University Channel Islands, Camarillo, CA 93012, USA;
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3
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Monesterolo NE, Santander VS, Campetelli AN, Rivelli Antonelli JF, Nigra AD, Balach MM, Muhlberger T, Previtali G, Casale CH. Tubulin Regulates Plasma Membrane Ca 2+-ATPase Activity in a Lipid Environment-dependent Manner. Cell Biochem Biophys 2024; 82:319-328. [PMID: 38133791 DOI: 10.1007/s12013-023-01206-4] [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: 10/25/2023] [Accepted: 11/30/2023] [Indexed: 12/23/2023]
Abstract
Ca2+ plays a crucial role in cell signaling, cytosolic Ca2+ can change up to 10,000-fold in concentration due to the action of Ca2+-ATPases, including PMCA, SERCA and SCR. The regulation and balance of these enzymes are essential to maintain cytosolic Ca2+ homeostasis. Our laboratory has discovered a novel PMCA regulatory system, involving acetylated tubulin alone or in combination with membrane lipids. This regulation controls cytosolic Ca2+ levels and influences cellular properties such as erythrocyte rheology. This review summarizes the findings on the regulatory mechanism of PMCA activity by acetylated tubulin in combination with lipids. The combination of tubulin cytoskeleton and membrane lipids suggests a novel regulatory system for PMCA, which consequently affects cytosolic Ca2+ content, depending on cytoskeletal and plasma membrane dynamics. Understanding the interaction between acetylated tubulin, lipids and PMCA activity provides new insights into Ca2+ signaling and cell function. Further research may shed light on potential therapeutic targets for diseases related to Ca2+ dysregulation. This discovery contributes to a broader understanding of cellular processes and offers opportunities to develop innovative approaches to treat Ca2+-related disorders. By elucidating the complex regulatory mechanisms of Ca2+ homeostasis, we advance our understanding of cell biology and its implications for human health.
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Affiliation(s)
- Noelia E Monesterolo
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800, Córdoba, Argentina
- Instituto de Biotecnología Ambiental y Salud (INBIAS), (CONICET - UNRC), Río Cuarto, 5800, Córdoba, Argentina
| | - Verónica S Santander
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800, Córdoba, Argentina
- Instituto de Biotecnología Ambiental y Salud (INBIAS), (CONICET - UNRC), Río Cuarto, 5800, Córdoba, Argentina
| | - Alexis N Campetelli
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800, Córdoba, Argentina
- Instituto de Biotecnología Ambiental y Salud (INBIAS), (CONICET - UNRC), Río Cuarto, 5800, Córdoba, Argentina
| | - Juan F Rivelli Antonelli
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800, Córdoba, Argentina
- Instituto de Biotecnología Ambiental y Salud (INBIAS), (CONICET - UNRC), Río Cuarto, 5800, Córdoba, Argentina
| | - Ayelén D Nigra
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800, Córdoba, Argentina
- Instituto de Biotecnología Ambiental y Salud (INBIAS), (CONICET - UNRC), Río Cuarto, 5800, Córdoba, Argentina
| | - Melisa M Balach
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800, Córdoba, Argentina
- Instituto de Biotecnología Ambiental y Salud (INBIAS), (CONICET - UNRC), Río Cuarto, 5800, Córdoba, Argentina
| | - Tamara Muhlberger
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800, Córdoba, Argentina
- Instituto de Biotecnología Ambiental y Salud (INBIAS), (CONICET - UNRC), Río Cuarto, 5800, Córdoba, Argentina
| | - Gabriela Previtali
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800, Córdoba, Argentina
- Instituto de Biotecnología Ambiental y Salud (INBIAS), (CONICET - UNRC), Río Cuarto, 5800, Córdoba, Argentina
| | - César H Casale
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800, Córdoba, Argentina.
- Instituto de Biotecnología Ambiental y Salud (INBIAS), (CONICET - UNRC), Río Cuarto, 5800, Córdoba, Argentina.
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4
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Norris AC, Mansueto AJ, Jimenez M, Yazlovitskaya EM, Jain BK, Graham TR. Flipping the script: Advances in understanding how and why P4-ATPases flip lipid across membranes. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2024; 1871:119700. [PMID: 38382846 DOI: 10.1016/j.bbamcr.2024.119700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 11/15/2023] [Accepted: 02/16/2024] [Indexed: 02/23/2024]
Abstract
Type IV P-type ATPases (P4-ATPases) are a family of transmembrane enzymes that translocate lipid substrates from the outer to the inner leaflet of biological membranes and thus create an asymmetrical distribution of lipids within membranes. On the cellular level, this asymmetry is essential for maintaining the integrity and functionality of biological membranes, creating platforms for signaling events and facilitating vesicular trafficking. On the organismal level, this asymmetry has been shown to be important in maintaining blood homeostasis, liver metabolism, neural development, and the immune response. Indeed, dysregulation of P4-ATPases has been linked to several diseases; including anemia, cholestasis, neurological disease, and several cancers. This review will discuss the evolutionary transition of P4-ATPases from cation pumps to lipid flippases, the new lipid substrates that have been discovered, the significant advances that have been achieved in recent years regarding the structural mechanisms underlying the recognition and flipping of specific lipids across biological membranes, and the consequences of P4-ATPase dysfunction on cellular and physiological functions. Additionally, we emphasize the requirement for additional research to comprehensively understand the involvement of flippases in cellular physiology and disease and to explore their potential as targets for therapeutics in treating a variety of illnesses. The discussion in this review will primarily focus on the budding yeast, C. elegans, and mammalian P4-ATPases.
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Affiliation(s)
- Adriana C Norris
- Department of Biological Sciences, Vanderbilt University, Nashville, TN, USA
| | | | - Mariana Jimenez
- Department of Biological Sciences, Vanderbilt University, Nashville, TN, USA
| | | | - Bhawik K Jain
- Department of Biological Sciences, Vanderbilt University, Nashville, TN, USA
| | - Todd R Graham
- Department of Biological Sciences, Vanderbilt University, Nashville, TN, USA.
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5
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Pathak R, Sachan N, Kabra A, Alanazi AS, Alanazi MM, Alsaif NA, Chandra P. Isolation, characterization, development and evaluation of phytoconstituent based formulation for diabetic neuropathy. Saudi Pharm J 2023; 31:101687. [PMID: 37448840 PMCID: PMC10336832 DOI: 10.1016/j.jsps.2023.06.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 06/19/2023] [Indexed: 07/15/2023] Open
Abstract
Background Morus alba Linn, referred to as white mulberry, is a potential traditional medicine for diabetes and neuroprotection. Aim Isolation, characterization, development and evaluation of phytoconstituent based formulation for diabetic neuropathy. Material and methods The stem Bark of M. alba was peeled and subjected to extraction. A phytoconstituent was then isolated by column chromatography and characterized using Mass spectroscopy, FTIR, and NMR. The isolated phytoconstituent was used to formulate a nanoemulsion. Nanoemulsion was also characterized for viscosity, surface tension, refractive index, pH, and particle size. Selected nanoemulsion formulations were then tested for acute oral toxicity and diabetic neuropathy, including behavioral, hematological, histopathological, and biomarker examinations. Results The spectral analysis affirmed that the isolated compound was found to be chrysin. A nanoemulsion formulation was made using the chrysin and was characterized and found to be stable during the stability testing and fulfilled all other testing parameters. Then acute oral toxicity study of the formulations was found to be safe. Formulations were found to possess significant results against diabetic neuropathy in rats. Biomarkers were analyzed for their mechanistic involvement in reducing neuropathy in rats, and it was found that the oxidative pathway was considerably restored, suggesting that chrysin causes these effects via this pathway. Conclusions Results suggests that isolated phytoconstituent (chrysin) from the bark of Morus alba derived nanoemulsion has protective and beneficial effects by diminishing the oxidative damage against alloxan-induced diabetic neuropathy in rats.
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Affiliation(s)
- Rashmi Pathak
- Department of Pharmacy, Invertis University, Bareilly-243123, Uttar Pradesh, India
| | - Neetu Sachan
- Maharana Pratap College of Pharmacy, Mandhana, Kanpur-209217, Uttar Pradesh, India
| | - Atul Kabra
- University Institute of Pharma Sciences, Chandigarh University, Gharuan, 140301 Mohali, Punjab, India
| | - Ashwag S. Alanazi
- Department of Pharmaceutical Sciences, College of Pharmacy, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Mohammed M. Alanazi
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh , Saudi Arabia
| | - Nawaf A. Alsaif
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh , Saudi Arabia
| | - Phool Chandra
- Teerthanker Mahaveer College of Pharmacy, Teerthanker Mahaveer University, Moradabad-244001, Uttar Pradesh, India
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6
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Balach MM, Santander VS, Elisio EY, Rivelli JF, Muhlberger T, Campetelli AN, Casale CH, Monesterolo NE. Tubulin-mediated anatomical and functional changes caused by Ca 2+ in human erythrocytes. J Physiol Biochem 2023:10.1007/s13105-023-00946-4. [PMID: 36773113 DOI: 10.1007/s13105-023-00946-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Accepted: 01/28/2023] [Indexed: 02/12/2023]
Abstract
In previous research, we observed that tubulin can be found in three fractions within erythrocytes, i.e., attached to the membrane, as a soluble fraction, or as part of a structure that can be sedimented by centrifugation. Given that its differential distribution within these fractions may alter several hemorheological properties, such as erythrocyte deformability, the present work studied how this distribution is in turn affected by Ca2+, another key player in the regulation of erythrocyte cytoskeleton stability. The effect of Ca2+ on some hemorheological parameters was also assessed. The results showed that when Ca2+ concentrations increased in the cell, whether by the addition of ionophore A23187, by specific plasma membrane Ca2 + _ATPase (PMCA) inhibition, or due to arterial hypertension, tubulin translocate to the membrane, erythrocyte deformability decreased, and phosphatidylserine exposure increased. Moreover, increased Ca2+ was associated with an inverse correlation in the distribution of tubulin and spectrin, another important cytoskeleton protein. Based on these findings, we propose the existence of a mechanism of action through which higher Ca2+ concentrations in erythrocytes trigger the migration of tubulin to the membrane, a phenomenon that results in alterations of rheological and molecular aspects of the membrane itself, as well as of the integrity of the cytoskeleton.
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Affiliation(s)
- Melisa M Balach
- Instituto de Biotecnología Ambiental y Salud (INBIAS), CONICET - UNRC)- Río Cuarto, 5800, Córdoba, Argentina.,Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico- Químicas y Naturales, Universidad Nacional de Río Cuarto, 5800, Río Cuarto, Córdoba, Argentina
| | - Verónica S Santander
- Instituto de Biotecnología Ambiental y Salud (INBIAS), CONICET - UNRC)- Río Cuarto, 5800, Córdoba, Argentina.,Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico- Químicas y Naturales, Universidad Nacional de Río Cuarto, 5800, Río Cuarto, Córdoba, Argentina
| | - Elida Y Elisio
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico- Químicas y Naturales, Universidad Nacional de Río Cuarto, 5800, Río Cuarto, Córdoba, Argentina
| | - Juan F Rivelli
- Instituto de Biotecnología Ambiental y Salud (INBIAS), CONICET - UNRC)- Río Cuarto, 5800, Córdoba, Argentina.,Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico- Químicas y Naturales, Universidad Nacional de Río Cuarto, 5800, Río Cuarto, Córdoba, Argentina
| | - Tamara Muhlberger
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico- Químicas y Naturales, Universidad Nacional de Río Cuarto, 5800, Río Cuarto, Córdoba, Argentina
| | - Alexis N Campetelli
- Instituto de Biotecnología Ambiental y Salud (INBIAS), CONICET - UNRC)- Río Cuarto, 5800, Córdoba, Argentina.,Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico- Químicas y Naturales, Universidad Nacional de Río Cuarto, 5800, Río Cuarto, Córdoba, Argentina
| | - Cesar H Casale
- Instituto de Biotecnología Ambiental y Salud (INBIAS), CONICET - UNRC)- Río Cuarto, 5800, Córdoba, Argentina.,Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico- Químicas y Naturales, Universidad Nacional de Río Cuarto, 5800, Río Cuarto, Córdoba, Argentina
| | - Noelia E Monesterolo
- Instituto de Biotecnología Ambiental y Salud (INBIAS), CONICET - UNRC)- Río Cuarto, 5800, Córdoba, Argentina. .,Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico- Químicas y Naturales, Universidad Nacional de Río Cuarto, 5800, Río Cuarto, Córdoba, Argentina.
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7
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Rognant S, Kravtsova VV, Bouzinova EV, Melnikova EV, Krivoi II, Pierre SV, Aalkjaer C, Jepps TA, Matchkov VV. The microtubule network enables Src kinase interaction with the Na,K-ATPase to generate Ca2+ flashes in smooth muscle cells. Front Physiol 2022; 13:1007340. [PMID: 36213229 PMCID: PMC9538378 DOI: 10.3389/fphys.2022.1007340] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Accepted: 09/05/2022] [Indexed: 12/03/2022] Open
Abstract
Background: Several local Ca2+ events are characterized in smooth muscle cells. We have previously shown that an inhibitor of the Na,K-ATPase, ouabain induces spatially restricted intracellular Ca2+ transients near the plasma membrane, and suggested the importance of this signaling for regulation of intercellular coupling and smooth muscle cell contraction. The mechanism behind these Na,K-ATPase-dependent “Ca2+ flashes” remains to be elucidated. In addition to its conventional ion transport function, the Na,K-ATPase is proposed to contribute to intracellular pathways, including Src kinase activation. The microtubule network is important for intracellular signaling, but its role in the Na,K-ATPase-Src kinase interaction is not known. We hypothesized the microtubule network was responsible for maintaining the Na,K-ATPase-Src kinase interaction, which enables Ca2+ flashes. Methods: We characterized Ca2+ flashes in cultured smooth muscle cells, A7r5, and freshly isolated smooth muscle cells from rat mesenteric artery. Cells were loaded with Ca2+-sensitive fluorescent dyes, Calcium Green-1/AM and Fura Red/AM, for ratiometric measurements of intracellular Ca2+. The Na,K-ATPase α2 isoform was knocked down with siRNA and the microtubule network was disrupted with nocodazole. An involvement of the Src signaling was tested pharmacologically and with Western blot. Protein interactions were validated with proximity ligation assays. Results: The Ca2+ flashes were induced by micromolar concentrations of ouabain. Knockdown of the α2 isoform Na,K-ATPase abolished Ca2+ flashes, as did inhibition of tyrosine phosphorylation with genistein and PP2, and the inhibitor of the Na,K-ATPase-dependent Src activation, pNaKtide. Ouabain-induced Ca2+ flashes were associated with Src kinase activation by phosphorylation. The α2 isoform Na,K-ATPase and Src kinase colocalized in the cells. Disruption of microtubule with nocodazole inhibited Ca2+ flashes, reduced Na,K-ATPase/Src interaction and Src activation. Conclusion: We demonstrate that the Na,K-ATPase-dependent Ca2+ flashes in smooth muscle cells require an interaction between the α2 isoform Na, K-ATPase and Src kinase, which is maintained by the microtubule network.
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Affiliation(s)
- Salomé Rognant
- Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Violetta V. Kravtsova
- Department of General Physiology, St. Petersburg State University, St. Petersburg, Russia
| | | | | | - Igor I. Krivoi
- Department of General Physiology, St. Petersburg State University, St. Petersburg, Russia
| | - Sandrine V. Pierre
- Marshall Institute for Interdisciplinary Research, Marshall University, Huntington, WV, United States
| | | | - Thomas A. Jepps
- Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Vladimir V. Matchkov
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
- *Correspondence: Vladimir V. Matchkov,
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8
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Rivelli Antonelli JF, Santander VS, Nigra AD, Monesterolo NE, Previtali G, Primo E, Otero LH, Casale CH. Prevention of tubulin/aldose reductase association delays the development of pathological complications in diabetic rats. J Physiol Biochem 2021; 77:565-576. [PMID: 34097242 DOI: 10.1007/s13105-021-00820-1] [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: 12/18/2020] [Accepted: 05/12/2021] [Indexed: 11/26/2022]
Abstract
In recent studies, we found that compounds derived from phenolic acids (CAFs) prevent the formation of the tubulin/aldose reductase complex and, consequently, may decrease the occurrence or delay the development of secondary pathologies associated with aldose reductase activation in diabetes mellitus. To verify this hypothesis, we determined the effect of CAFs on Na+,K+-ATPase tubulin-dependent activity in COS cells, ex vivo cataract formation in rat lenses and finally, to evaluate the antidiabetic effect of CAFs, diabetes mellitus was induced in Wistar rats, they were treated with different CAFs and four parameters were determinates: cataract formation, erythrocyte deformability, nephropathy and blood pressure. After confirming that CAFs are able to prevent the association between aldose reductase and tubulin, we found that treatment of diabetic rats with these compounds decreased membrane-associated acetylated tubulin, increased NKA activity, and thus reversed the development of four AR-activated complications of diabetes mellitus determined in this work. Based on these results, the existence of a new physiological mechanism is proposed, in which tubulin is a key regulator of aldose reductase activity. This mechanism can explain the incorrect functioning of aldose reductase and Na+,K+-ATPase, two key enzymes in the pathogenesis of diabetes mellitus. Moreover, we found that such alterations can be prevented by CAFs, which are able to dissociate tubulin/aldose reductase complex.
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Affiliation(s)
- Juan F Rivelli Antonelli
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800, Córdoba, CP, Argentina
- INBIAS CONICET-UNRC, Instituto de Biotecnología Ambiental y Salud, Campus UNRC, Río Cuarto, 5800, Córdoba, CP, Argentina
| | - Verónica S Santander
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800, Córdoba, CP, Argentina
- INBIAS CONICET-UNRC, Instituto de Biotecnología Ambiental y Salud, Campus UNRC, Río Cuarto, 5800, Córdoba, CP, Argentina
| | - Ayelen D Nigra
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800, Córdoba, CP, Argentina
- INBIAS CONICET-UNRC, Instituto de Biotecnología Ambiental y Salud, Campus UNRC, Río Cuarto, 5800, Córdoba, CP, Argentina
| | - Noelia E Monesterolo
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800, Córdoba, CP, Argentina
- INBIAS CONICET-UNRC, Instituto de Biotecnología Ambiental y Salud, Campus UNRC, Río Cuarto, 5800, Córdoba, CP, Argentina
| | - Gabriela Previtali
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800, Córdoba, CP, Argentina
- INBIAS CONICET-UNRC, Instituto de Biotecnología Ambiental y Salud, Campus UNRC, Río Cuarto, 5800, Córdoba, CP, Argentina
| | - Emilianao Primo
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800, Córdoba, CP, Argentina
- INBIAS CONICET-UNRC, Instituto de Biotecnología Ambiental y Salud, Campus UNRC, Río Cuarto, 5800, Córdoba, CP, Argentina
| | - Lisandro H Otero
- Instituto de Investigaciones Bioquímicas de Buenos Aires, IIBBA, CONICET - Fundación Instituto Leloir, Av Patricias Argentinas 435, C1405BWE, Buenos Aires, Argentina
| | - César H Casale
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800, Córdoba, CP, Argentina.
- INBIAS CONICET-UNRC, Instituto de Biotecnología Ambiental y Salud, Campus UNRC, Río Cuarto, 5800, Córdoba, CP, Argentina.
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9
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Longmore DK, Miller JE, Bekkering S, Saner C, Mifsud E, Zhu Y, Saffery R, Nichol A, Colditz G, Short KR, Burgner DP. Diabetes and Overweight/Obesity Are Independent, Nonadditive Risk Factors for In-Hospital Severity of COVID-19: An International, Multicenter Retrospective Meta-analysis. Diabetes Care 2021; 44:1281-1290. [PMID: 33858854 PMCID: PMC8247499 DOI: 10.2337/dc20-2676] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 01/14/2021] [Indexed: 02/03/2023]
Abstract
OBJECTIVE Obesity is an established risk factor for severe coronavirus disease 2019 (COVID-19), but the contribution of overweight and/or diabetes remains unclear. In a multicenter, international study, we investigated if overweight, obesity, and diabetes were independently associated with COVID-19 severity and whether the BMI-associated risk was increased among those with diabetes. RESEARCH DESIGN AND METHODS We retrospectively extracted data from health care records and regional databases of hospitalized adult patients with COVID-19 from 18 sites in 11 countries. We used standardized definitions and analyses to generate site-specific estimates, modeling the odds of each outcome (supplemental oxygen/noninvasive ventilatory support, invasive mechanical ventilatory support, and in-hospital mortality) by BMI category (reference, overweight, obese), adjusting for age, sex, and prespecified comorbidities. Subgroup analysis was performed on patients with preexisting diabetes. Site-specific estimates were combined in a meta-analysis. RESULTS Among 7,244 patients (65.6% overweight/obese), those with overweight were more likely to require oxygen/noninvasive ventilatory support (random effects adjusted odds ratio [aOR], 1.44; 95% CI 1.15-1.80) and invasive mechanical ventilatory support (aOR, 1.22; 95% CI 1.03-1.46). There was no association between overweight and in-hospital mortality (aOR, 0.88; 95% CI 0.74-1.04). Similar effects were observed in patients with obesity or diabetes. In the subgroup analysis, the aOR for any outcome was not additionally increased in those with diabetes and overweight or obesity. CONCLUSIONS In adults hospitalized with COVID-19, overweight, obesity, and diabetes were associated with increased odds of requiring respiratory support but were not associated with death. In patients with diabetes, the odds of severe COVID-19 were not increased above the BMI-associated risk.
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Affiliation(s)
- Danielle K Longmore
- Murdoch Children's Research Institute, The Royal Children's Hospital, Parkville, Victoria, Australia .,Menzies School of Health Research, Charles Darwin University, Darwin, Australia.,Infectious Diseases Unit, Department of General Medicine, The Royal Children's Hospital, Parkville, Victoria, Australia
| | - Jessica E Miller
- Murdoch Children's Research Institute, The Royal Children's Hospital, Parkville, Victoria, Australia.,Department of Paediatrics, Melbourne University, Parkville, Victoria, Australia
| | - Siroon Bekkering
- Murdoch Children's Research Institute, The Royal Children's Hospital, Parkville, Victoria, Australia.,Department of Internal Medicine, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Christoph Saner
- Murdoch Children's Research Institute, The Royal Children's Hospital, Parkville, Victoria, Australia.,Pediatric Endocrinology, Diabetology and Metabolism, Department of Pediatrics, University Hospital Inselspital, University of Bern, Bern, Switzerland
| | - Edin Mifsud
- Murdoch Children's Research Institute, The Royal Children's Hospital, Parkville, Victoria, Australia.,World Health Organization Collaborating Centre for Reference and Research on Influenza, Doherty Institute, Melbourne, Australia
| | - Yanshan Zhu
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Australia
| | - Richard Saffery
- Murdoch Children's Research Institute, The Royal Children's Hospital, Parkville, Victoria, Australia.,Department of Paediatrics, Melbourne University, Parkville, Victoria, Australia
| | - Alistair Nichol
- Department of Intensive Care, Alfred Health, Melbourne, Australia.,Australian and New Zealand Intensive Care Research Centre, Monash University, Melbourne, Australia.,University College Dublin Clinical Research Centre, St Vincent's Hospital, Dublin, Ireland
| | | | - Kirsty R Short
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Australia
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10
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Tamara M, Micaela BM, Gastón BC, Silvina SV, Edith MN, Horacio CC, Nazareno CA. Inhibition of flippase-like activity by tubulin regulates phosphatidylserine exposure in erythrocytes from hypertensive and diabetic patients. J Biochem 2021; 169:731-745. [PMID: 33576821 DOI: 10.1093/jb/mvab016] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 02/09/2021] [Indexed: 02/04/2023] Open
Abstract
Plasma membrane tubulin is an endogenous regulator of P-ATPases and the unusual accumulation of tubulin in the erythrocyte membrane results in a partial inhibition of some their activities, causing hemorheological disorders like reduced cell deformability and osmotic resistance. These disorders are of particular interest in hypertension and diabetes, where the abnormal increase in membrane tubulin may be related to the disease development. Phosphatidylserine is more exposed on the membrane of diabetic erythrocytes than in healthy cells. In most cells, phosphatidylserine is transported from the exoplasmic to the cytoplasmic leaflet of the membrane by lipid flippases. Here we report that phosphatidylserine is more exposed in erythrocytes from both hypertensive and diabetic patients than in healthy erythrocytes, which could be attributed to the inhibition of flippase activity by tubulin. This is supported by: (i)- the translocation rate of a fluorescent phosphatidylserine analog in hypertensive and diabetic erythrocytes was slower than in healthy cells, (ii)- the pharmacological variation of membrane tubulin in erythrocytes and K562 cells was linked to changes in phosphatidylserine translocation, (iii)- the P-ATPase-dependent phosphatidylserine translocation in inside-out vesicles from human erythrocytes was inhibited by tubulin. These results suggest that tubulin regulates flippase activity and hence the membrane phospholipid asymmetry.
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Affiliation(s)
- Muhlberger Tamara
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800 Córdoba, Argentina
| | - Balach Melisa Micaela
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800 Córdoba, Argentina.,INBIAS CONICET-UNRC. Instituto de Biotecnología Ambiental y Salud. Campus UNRC, Río Cuarto, Córdoba, Argentina
| | - Bisig Carlos Gastón
- Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC), UNC-CONICET, Departamento de Química Biológica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, 5000 Córdoba, Argentina
| | - Santander Verónica Silvina
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800 Córdoba, Argentina.,INBIAS CONICET-UNRC. Instituto de Biotecnología Ambiental y Salud. Campus UNRC, Río Cuarto, Córdoba, Argentina
| | - Monesterolo Noelia Edith
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800 Córdoba, Argentina.,INBIAS CONICET-UNRC. Instituto de Biotecnología Ambiental y Salud. Campus UNRC, Río Cuarto, Córdoba, Argentina
| | - Casale Cesar Horacio
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800 Córdoba, Argentina.,INBIAS CONICET-UNRC. Instituto de Biotecnología Ambiental y Salud. Campus UNRC, Río Cuarto, Córdoba, Argentina
| | - Campetelli Alexis Nazareno
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800 Córdoba, Argentina.,INBIAS CONICET-UNRC. Instituto de Biotecnología Ambiental y Salud. Campus UNRC, Río Cuarto, Córdoba, Argentina
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11
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Proteomics Analysis of Gastric Cancer Patients with Diabetes Mellitus. J Clin Med 2021; 10:jcm10030407. [PMID: 33494396 PMCID: PMC7866049 DOI: 10.3390/jcm10030407] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Revised: 01/15/2021] [Accepted: 01/16/2021] [Indexed: 12/13/2022] Open
Abstract
Proteomics is a powerful approach to study the molecular mechanisms of cancer. In this study, we aim to characterize the proteomic profile of gastric cancer (GC) in patients with diabetes mellitus (DM) type 2. Forty GC tissue samples including 19 cases from diabetic patients and 21 cases from individuals without diabetes (control group) were selected for the proteomics analysis. Gastric tissues were processed following the single-pot, solid-phase-enhanced sample preparation approach-SP3 and enzymatic digestion with trypsin. The resulting peptides were analyzed by LC-MS Liquid Chromatography-Mass Spectrometry (LC-MS). The comparison of protein expression levels between GC samples from diabetic and non-diabetic patients was performed by label-free quantification (LFQ). A total of 6599 protein groups were identified in the 40 samples. Thirty-seven proteins were differentially expressed among the two groups, with 16 upregulated and 21 downregulated in the diabetic cohort. Statistical overrepresentation tests were considered for different annotation sets including the Gene Ontology(GO), Kyoto Encyclopedia of Genes and Genomes (KEGG), Reactome, and Disease functional databases. Upregulated proteins in the GC samples from diabetic patients were particularly enriched in respiratory electron transport and alcohol metabolic biological processes, while downregulated proteins were associated with epithelial cancers, intestinal diseases, and cell-cell junction cellular components. Taken together, these results support the data already obtained by previous studies that associate diabetes with metabolic disorders and diabetes-associated diseases, such as Alzheimer's and Parkinson's, and also provide valuable insights into seven GC-associated protein targets, claudin-3, polymeric immunoglobulin receptor protein, cadherin-17, villin-1, transglutaminase-2, desmoglein-2, and mucin-13, which warrant further investigation.
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12
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de Souza Cordeiro LM, Elsheikh A, Devisetty N, Morgan DA, Ebert SN, Rahmouni K, Chhabra KH. Hypothalamic MC4R regulates glucose homeostasis through adrenaline-mediated control of glucose reabsorption via renal GLUT2 in mice. Diabetologia 2021; 64:181-194. [PMID: 33052459 PMCID: PMC7718429 DOI: 10.1007/s00125-020-05289-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 08/18/2020] [Indexed: 12/12/2022]
Abstract
AIMS/HYPOTHESIS Melanocortin 4 receptor (MC4R) mutation is the most common cause of known monogenic obesity in humans. Unexpectedly, humans and rodents with MC4R deficiency do not develop hyperglycaemia despite chronic obesity and insulin resistance. To explain the underlying mechanisms for this phenotype, we determined the role of MC4R in glucose homeostasis in the presence and absence of obesity in mice. METHODS We used global and hypothalamus-specific MC4R-deficient mice to investigate the brain regions that contribute to glucose homeostasis via MC4R. We performed oral, intraperitoneal and intravenous glucose tolerance tests in MC4R-deficient mice that were either obese or weight-matched to their littermate controls to define the role of MC4R in glucose regulation independently of changes in body weight. To identify the integrative pathways through which MC4R regulates glucose homeostasis, we measured renal and adrenal sympathetic nerve activity. We also evaluated glucose homeostasis in adrenaline (epinephrine)-deficient mice to investigate the role of adrenaline in mediating the effects of MC4R in glucose homeostasis. We employed a graded [13C6]glucose infusion procedure to quantify renal glucose reabsorption in MC4R-deficient mice. Finally, we measured the levels of renal glucose transporters in hypothalamus-specific MC4R-deficient mice and adrenaline-deficient mice using western blotting to ascertain the molecular mechanisms underlying MC4R control of glucose homeostasis. RESULTS We found that obese and weight-matched MC4R-deficient mice exhibited improved glucose tolerance due to elevated glucosuria, not enhanced beta cell function. Moreover, MC4R deficiency selectively in the paraventricular nucleus of the hypothalamus (PVH) is responsible for reducing the renal threshold for glucose as measured by graded [13C6]glucose infusion technique. The MC4R deficiency suppressed renal sympathetic nerve activity by 50% in addition to decreasing circulating adrenaline and renal GLUT2 levels in mice, which contributed to the elevated glucosuria. We further report that adrenaline-deficient mice recapitulated the increased excretion of glucose in urine observed in the MC4R-deficient mice. Restoration of circulating adrenaline in both the MC4R- and adrenaline-deficient mice reversed their phenotype of improved glucose tolerance and elevated glucosuria, demonstrating the role of adrenaline in mediating the effects of MC4R on glucose reabsorption. CONCLUSIONS/INTERPRETATION These findings define a previously unrecognised function of hypothalamic MC4R in glucose reabsorption mediated by adrenaline and renal GLUT2. Taken together, our findings indicate that elevated glucosuria due to low sympathetic tone explains why MC4R deficiency does not cause hyperglycaemia despite inducing obesity and insulin resistance. Graphical abstract.
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Affiliation(s)
- Leticia Maria de Souza Cordeiro
- Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Arwa Elsheikh
- Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Nagavardhini Devisetty
- Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Donald A Morgan
- Department of Neuroscience and Pharmacology, University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Steven N Ebert
- Division of Metabolic and Cardiovascular Sciences, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL, USA
| | - Kamal Rahmouni
- Department of Neuroscience and Pharmacology, University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Kavaljit H Chhabra
- Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA.
- Department of Pharmacology and Physiology, University of Rochester Medical Center, Rochester, NY, USA.
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13
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Argüello-García R, Calzada F, García-Hernández N, Chávez-Munguía B, Velázquez-Domínguez JA. Ultrastructural and proapoptotic-like effects of kaempferol in Giardia duodenalis trophozoites and bioinformatics prediction of its potential protein target. Mem Inst Oswaldo Cruz 2020; 115:e200127. [PMID: 33111756 PMCID: PMC7577037 DOI: 10.1590/0074-02760200127] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Accepted: 09/24/2020] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND Kaempferol (KPF) is a flavonoid with antiparasitic activity including experimental giardiasis which mechanism of action is unknown. OBJECTIVE To analyse the cytotoxic effects of KPF on Giardia duodenalis trophozoites and to identify a likely parasite target of this compound. METHODS We used inhibitory concentrations of KPF (IC25, IC50 and IC100) and albendazole (ABZ) as reference drug. The ultrastructure of the trophozoites was analysed by transmission electron microscopy (TEM) whilst apoptosis/necrosis, production of reactive oxygen species (ROS) and cell cycle progression were assessed by flow cytometry (FCM) and confocal laser microscopy (CLM). Ligand-protein docking analyses were carried out using KPF structure from a drug library and crystal structure of a G. duodenalis aldose reductase (GdAldRed) homolog. RESULTS KPF provoked appearance of perinuclear and periplasmic spaces devoid of cytosolic content and multilamellar structures. KPF induced proapoptotic death associated with partial arrest in the S phase without ROS production. Bioinformatics approaches predicted that GdAldRed is a viable KPF target (ΔG = -7.09 kCal/mol), exhibiting 92% structural identity and a similar coupling pattern as its human homolog. CONCLUSIONS KPF exerted a proapoptotic effect on G. duodenalis trophozoites involving partial interruption of DNA synthesis without oxidative stress or structure damage to chromatin and cytoskeletal structures. GdAldRed is a likely target underlying its antigiardial activity.
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Affiliation(s)
- Raúl Argüello-García
- Centro de Investigación y de Estudios Avanzados-Instituto Politécnico Nacional, Departamento de Genética y Biología Molecular, Ciudad de México, México
| | - Fernando Calzada
- Centro Médico Nacional Siglo XXI, Unidad Médica de Alta Especialidad, Unidad de Investigación Médica en Farmacología, Ciudad de México, México
| | - Normand García-Hernández
- Instituto Mexicano del Seguro Social, Centro Médico Nacional Siglo XXI, Unidad Médica de Alta Especialidad, Hospital de Pediatría, Unidad de Investigación Médica en Genética Humana, Ciudad de México, México
| | - Bibiana Chávez-Munguía
- Centro de Investigación y de Estudios Avanzados-Instituto Politécnico Nacional, Departamento de Infectómica y Patogénesis Molecular, Ciudad de México, México
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14
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Analysis of hepatic transcriptome modulation exerted by γ-conglutin from lupins in a streptozotocin-induced diabetes model. Gene 2020; 761:145036. [PMID: 32777525 DOI: 10.1016/j.gene.2020.145036] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 06/20/2020] [Accepted: 08/04/2020] [Indexed: 12/16/2022]
Abstract
Lupinus albus γ-conglutin is proposed to positively affect glucose metabolism through inhibition of hepatic glucose production and insulin-mimetic activity; however, the action mechanism is not entirely known. Besides, most studies had focused on its effect on molecular targets directly related to glucose metabolism, and few studies have investigated how γ-conglutin may affect the liver gene expression or if it plays a role in other metabolic processes. Therefore, we investigated the influence of γ-conglutin on the liver transcriptome of streptozotocin-induced diabetic rats using DNA microarrays, ontological analyses, and quantitative PCR. Of the 22,000 genes evaluated, 803 and 173 were downregulated and upregulated, respectively. The ontological analyses of the differentially expressed genes revealed that among others, the mitochondria, microtubules, cytoskeleton, and oxidoreductase activity terms were enriched, implying a possible role of γ-conglutin on autophagy. To corroborate the microarray results, we selected and quantified, by PCR, the expression of two genes associated with autophagy (Atg7 and Snx18) and found their expression augmented two and threefold, respectively; indicating a higher autophagy activity in animals treated with γ-conglutin. Although complementary studies are required, our findings indicate for the first time that the hypoglycaemic effects of γ-conglutin may involve an autophagy induction mechanism, a pivotal process for the preservation of cell physiology and glucose homeostasis.
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15
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Hulme KD, Yan L, Marshall RJ, Bloxham CJ, Upton KR, Hasnain SZ, Bielefeldt-Ohmann H, Loh Z, Ronacher K, Chew KY, Gallo LA, Short KR. High glucose levels increase influenza-associated damage to the pulmonary epithelial-endothelial barrier. eLife 2020; 9:56907. [PMID: 32697191 PMCID: PMC7392605 DOI: 10.7554/elife.56907] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 07/17/2020] [Indexed: 12/13/2022] Open
Abstract
Diabetes mellitus is a known susceptibility factor for severe influenza virus infections. However, the mechanisms that underlie this susceptibility remain incompletely understood. Here, the effects of high glucose levels on influenza severity were investigated using an in vitro model of the pulmonary epithelial-endothelial barrier as well as an in vivo murine model of type II diabetes. In vitro we show that high glucose conditions prior to IAV infection increased virus-induced barrier damage. This was associated with an increased pro-inflammatory response in endothelial cells and the subsequent damage of the epithelial junctional complex. These results were subsequently validated in vivo. This study provides the first evidence that hyperglycaemia may increase influenza severity by damaging the pulmonary epithelial-endothelial barrier and increasing pulmonary oedema. These data suggest that maintaining long-term glucose control in individuals with diabetes is paramount in reducing the morbidity and mortality associated with influenza virus infections.
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Affiliation(s)
- Katina D Hulme
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Australia
| | - Limin Yan
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Australia
| | - Rebecca J Marshall
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Australia
| | - Conor J Bloxham
- School of Biomedical Sciences, The University of Queensland, Woolloongabba, Australia
| | - Kyle R Upton
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Australia
| | - Sumaira Z Hasnain
- Mater Research Institute, The University of Queensland, Translational Research Institute, Woolloongabba, Australia
| | - Helle Bielefeldt-Ohmann
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Australia.,Australian Infectious Diseases Research Centre, The University of Queensland, St Lucia, Australia
| | - Zhixuan Loh
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Australia
| | - Katharina Ronacher
- Mater Research Institute, The University of Queensland, Translational Research Institute, Woolloongabba, Australia.,Australian Infectious Diseases Research Centre, The University of Queensland, St Lucia, Australia
| | - Keng Yih Chew
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Australia
| | - Linda A Gallo
- School of Biomedical Sciences, The University of Queensland, Woolloongabba, Australia.,Mater Research Institute, The University of Queensland, Translational Research Institute, Woolloongabba, Australia
| | - Kirsty R Short
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Australia.,Australian Infectious Diseases Research Centre, The University of Queensland, St Lucia, Australia
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16
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Nigra AD, Casale CH, Santander VS. Human erythrocytes: cytoskeleton and its origin. Cell Mol Life Sci 2020; 77:1681-1694. [PMID: 31654099 PMCID: PMC11105037 DOI: 10.1007/s00018-019-03346-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 09/27/2019] [Accepted: 10/16/2019] [Indexed: 01/02/2023]
Abstract
In the last few years, erythrocytes have emerged as the main determinant of blood rheology. In mammals, these cells are devoid of nuclei and are, therefore, unable to divide. Consequently, all circulating erythrocytes come from erythropoiesis, a process in the bone marrow in which several modifications are induced in the expression of membrane and cytoskeletal proteins, and different vertical and horizontal interactions are established between them. Cytoskeleton components play an important role in this process, which explains why they and the interaction between them have been the focus of much recent research. Moreover, in mature erythrocytes, the cytoskeleton integrity is also essential, because the cytoskeleton confers remarkable deformability and stability on the erythrocytes, thus enabling them to undergo deformation in microcirculation. Defects in the cytoskeleton produce changes in erythrocyte deformability and stability, affecting cell viability and rheological properties. Such abnormalities are seen in different pathologies of special interest, such as different types of anemia, hypertension, and diabetes, among others. This review highlights the main findings in mammalian erythrocytes and their progenitors regarding the presence, conformation and function of the three main components of the cytoskeleton: actin, intermediate filaments, and tubulin.
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Affiliation(s)
- Ayelén D Nigra
- Departamento de Biología Molecular, Facultad de Ciencias Exactas Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, 5800, Río Cuarto, Córdoba, Argentina
- Departamento de Química Biológica, Facultad de Ciencias Químicas, Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC), UNC-CONICET, Universidad Nacional de Córdoba, 5000, Córdoba, Argentina
| | - Cesar H Casale
- Departamento de Biología Molecular, Facultad de Ciencias Exactas Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, 5800, Río Cuarto, Córdoba, Argentina
| | - Verónica S Santander
- Departamento de Biología Molecular, Facultad de Ciencias Exactas Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, 5800, Río Cuarto, Córdoba, Argentina.
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17
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The single-cell transcriptomic landscape of early human diabetic nephropathy. Proc Natl Acad Sci U S A 2019; 116:19619-19625. [PMID: 31506348 PMCID: PMC6765272 DOI: 10.1073/pnas.1908706116] [Citation(s) in RCA: 357] [Impact Index Per Article: 59.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Single-nucleus RNA sequencing revealed gene expression changes in early diabetic nephropathy that promote urinary potassium secretion and decreased calcium and magnesium reabsorption. Multiple cell types exhibited angiogenic signatures, which may represent early signs of aberrant angiogenesis. These alterations may help to identify biomarkers for disease progression or signaling pathways amenable to early intervention. Diabetic nephropathy is characterized by damage to both the glomerulus and tubulointerstitium, but relatively little is known about accompanying cell-specific changes in gene expression. We performed unbiased single-nucleus RNA sequencing (snRNA-seq) on cryopreserved human diabetic kidney samples to generate 23,980 single-nucleus transcriptomes from 3 control and 3 early diabetic nephropathy samples. All major cell types of the kidney were represented in the final dataset. Side-by-side comparison demonstrated cell-type–specific changes in gene expression that are important for ion transport, angiogenesis, and immune cell activation. In particular, we show that the diabetic thick ascending limb, late distal convoluted tubule, and principal cells all adopt a gene expression signature consistent with increased potassium secretion, including alterations in Na+/K+-ATPase, WNK1, mineralocorticoid receptor, and NEDD4L expression, as well as decreased paracellular calcium and magnesium reabsorption. We also identify strong angiogenic signatures in glomerular cell types, proximal convoluted tubule, distal convoluted tubule, and principal cells. Taken together, these results suggest that increased potassium secretion and angiogenic signaling represent early kidney responses in human diabetic nephropathy.
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18
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Waugh DT. Fluoride Exposure Induces Inhibition of Sodium-and Potassium-Activated Adenosine Triphosphatase (Na +, K +-ATPase) Enzyme Activity: Molecular Mechanisms and Implications for Public Health. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:E1427. [PMID: 31010095 PMCID: PMC6518254 DOI: 10.3390/ijerph16081427] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 04/02/2019] [Accepted: 04/08/2019] [Indexed: 12/24/2022]
Abstract
In this study, several lines of evidence are provided to show that Na + , K + -ATPase activity exerts vital roles in normal brain development and function and that loss of enzyme activity is implicated in neurodevelopmental, neuropsychiatric and neurodegenerative disorders, as well as increased risk of cancer, metabolic, pulmonary and cardiovascular disease. Evidence is presented to show that fluoride (F) inhibits Na + , K + -ATPase activity by altering biological pathways through modifying the expression of genes and the activity of glycolytic enzymes, metalloenzymes, hormones, proteins, neuropeptides and cytokines, as well as biological interface interactions that rely on the bioavailability of chemical elements magnesium and manganese to modulate ATP and Na + , K + -ATPase enzyme activity. Taken together, the findings of this study provide unprecedented insights into the molecular mechanisms and biological pathways by which F inhibits Na + , K + -ATPase activity and contributes to the etiology and pathophysiology of diseases associated with impairment of this essential enzyme. Moreover, the findings of this study further suggest that there are windows of susceptibility over the life course where chronic F exposure in pregnancy and early infancy may impair Na + , K + -ATPase activity with both short- and long-term implications for disease and inequalities in health. These findings would warrant considerable attention and potential intervention, not to mention additional research on the potential effects of F intake in contributing to chronic disease.
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Affiliation(s)
- Declan Timothy Waugh
- EnviroManagement Services, 11 Riverview, Doherty's Rd, P72 YF10 Bandon, Co. Cork, Ireland.
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19
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Santander VS, Campetelli AN, Monesterolo NE, Rivelli JF, Nigra AD, Arce CA, Casale CH. Tubulin-Na + , K + -ATPase interaction: Involvement in enzymatic regulation and cellular function. J Cell Physiol 2018; 234:7752-7763. [PMID: 30378111 DOI: 10.1002/jcp.27610] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 09/21/2018] [Indexed: 12/22/2022]
Abstract
A new function for tubulin was described by our laboratory: acetylated tubulin forms a complex with Na+ ,K + -ATPase (NKA) and inhibits its activity. This process was shown to be a regulatory factor of physiological importance in cultured cells, human erythrocytes, and several rat tissues. Formation of the acetylated tubulin-NKA complex is reversible. We demonstrated that in cultured cells, high concentrations of glucose induce translocation of acetylated tubulin from cytoplasm to plasma membrane with a consequent inhibition of NKA activity. This effect is reversed by adding glutamate, which is coctransported to the cell with Na + . Another posttranslational modification of tubulin, detyrosinated tubulin, is also involved in the regulation of NKA activity: it enhances the NKA inhibition induced by acetylated tubulin. Manipulation of the content of these modifications of tubulin could work as a new strategy to maintain homeostasis of Na + and K + , and to regulate a variety of functions in which NKA is involved, such as osmotic fragility and deformability of human erythrocytes. The results summarized in this review show that the interaction between tubulin and NKA plays an important role in cellular physiology, both in the regulation of Na + /K + homeostasis and in the rheological properties of the cells, which is mechanically different from other roles reported up to now.
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Affiliation(s)
- Veronica S Santander
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba, Argentina
| | - Alexis N Campetelli
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba, Argentina
| | - Noelia E Monesterolo
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba, Argentina
| | - Juan F Rivelli
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba, Argentina
| | - Ayelen D Nigra
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba, Argentina
| | - Carlos A Arce
- entro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC), UNC-CONICET, Departamento de Química Biológica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, Córdoba, Argentina
| | - César H Casale
- Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba, Argentina
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20
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Rodrigues R, de Medeiros LA, Cunha LM, Garrote-Filho MDS, Bernardino Neto M, Jorge PT, Resende ES, Penha-Silva N. Correlations of the glycemic variability with oxidative stress and erythrocytes membrane stability in patients with type 1 diabetes under intensive treatment. Diabetes Res Clin Pract 2018; 144:153-160. [PMID: 29427698 DOI: 10.1016/j.diabres.2018.01.031] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Revised: 12/27/2017] [Accepted: 01/26/2018] [Indexed: 01/12/2023]
Abstract
OBJECTIVES This study aimed to evaluate the correlations of glycemic variability with erythrocyte membrane stability parameters and oxidative stress markers in patients with type 1 diabetes mellitus (T1DM) under intensive treatment. MATERIAL AND METHODS 90 patients with T1DM and under intensive treatment of the disease were evaluated in relation to anthropometric indices, records of glycemic averages and parameters of glycemic variability, biochemical dosages (glucose, uric acid, lipidogram, glycated hemoglobin, microalbuminuria, creatinine and iron) reticulocyte count, erythrocyte membrane stability parameters and oxidative stress markers (thiobarbituric acid reactive substances, TBARS, and glutathione reductase, GR). RESULTS Indicators of glycemic variability in the short and long term showed correlations with parameters of membrane stability and markers of oxidative stress (GR). In addition, the comparison of these same parameters between the subgroups consisting of quartiles of GV or glycemic control also showed significant differences. CONCLUSION In the T1DM patients studied here, glycemic variability showed correlations with oxidative stress and erythrocyte membrane stability variables. This corroborates the hypothesis that glycemic fluctuations interfere with lipid peroxidation and cell membrane behavior, emphasizing its participation in mechanisms related to the development of chronic complications of diabetes.
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Affiliation(s)
| | | | - Lucas Moreira Cunha
- Institute of Genetics and Biochemistry, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | | | - Morun Bernardino Neto
- Department of Basic and Environmental Sciences, University of São Paulo, Lorena, SP, Brazil
| | | | | | - Nilson Penha-Silva
- Institute of Genetics and Biochemistry, Federal University of Uberlândia, Uberlândia, MG, Brazil
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21
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Regulation of aldose reductase activity by tubulin and phenolic acid derivates. Arch Biochem Biophys 2018; 654:19-26. [DOI: 10.1016/j.abb.2018.07.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 06/29/2018] [Accepted: 07/11/2018] [Indexed: 12/26/2022]
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22
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Akamine T, Kusunose N, Matsunaga N, Koyanagi S, Ohdo S. Accumulation of sorbitol in the sciatic nerve modulates circadian properties of diabetes-induced neuropathic pain hypersensitivity in a diabetic mouse model. Biochem Biophys Res Commun 2018; 503:181-187. [PMID: 29864425 DOI: 10.1016/j.bbrc.2018.05.209] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Accepted: 05/31/2018] [Indexed: 10/14/2022]
Abstract
The intensity of pain in diabetic neuropathy varies in a circadian time-dependent manner. It is well known that diabetes has two distinct types, which are differentiated based on the cause of the disease. Previous studies have yet to compare the circadian properties of the pain intensity of diabetic neuropathy between type I and type II diabetes. In this study, we demonstrated that the pain intensity of diabetic peripheral neuropathy in a db/db mouse model of type II diabetes showed a significant diurnal oscillation, but such time-dependent oscillation was not detected in a streptozotocin (STZ)-induced type I diabetic mouse model. The polyol pathway-induced accumulation of sorbitol in peripheral nerve cells suppresses Na+/K+-ATPase activity, which is associated with the intensity of pain in diabetic neuropathy. In db/db mice, this accumulation of sorbitol in peripheral nerve cells showed significant diurnal oscillation. In addition, pain intensity and Na+/K+-ATPase activity were decreased at the peak time of sorbitol accumulation in these mice. Although STZ-induced diabetic mice also showed sorbitol accumulation and Na+/K+-ATPase dysfunction, these measures did not oscillate in a time-dependent manner. These findings reveal differences in the circadian properties of pain hypersensitivity in mouse models of type I and type II diabetes, and also provide ideas for developing novel approaches to the management of diabetic neuropathy.
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Affiliation(s)
- Takahiro Akamine
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Naoki Kusunose
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Naoya Matsunaga
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; Department of Glocal Healthcare, Faculty of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Satoru Koyanagi
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan; Department of Glocal Healthcare, Faculty of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Shigehiro Ohdo
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
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23
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Wei YL, Yang WX. The acroframosome-acroplaxome-manchette axis may function in sperm head shaping and male fertility. Gene 2018; 660:28-40. [DOI: 10.1016/j.gene.2018.03.059] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 03/09/2018] [Accepted: 03/19/2018] [Indexed: 12/27/2022]
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24
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Rusak T, Misztal T, Rusak M, Branska-Januszewska J, Tomasiak M. Involvement of hyperglycemia in the development of platelet procoagulant response: the role of aldose reductase and platelet swelling. Blood Coagul Fibrinolysis 2018; 28:443-451. [PMID: 28820747 DOI: 10.1097/mbc.0000000000000618] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
: Rise in mean platelet volume (MPV) has been demonstrated to be associated with increased platelet reactivity. In diabetes patients, augmented MPV was proposed to contribute to increased risk of thrombotic complications. Therefore, the aim of this study was to investigate whether under hyperglycemic conditions, aldose reductase (AR)-mediated sorbitol formation and associated rise in cell volume, which subsequently results in platelet hyperactivation. Platelets were obtained from 30 healthy volunteers and 13 patients with diabetes. We evaluated changes in platelet size, their reactivity (measured as aggregation and secretion), and sorbitol content evoked by glucose. Measurement of procoagulant activity and thromboelastography were performed to assess how hyperglycemia affects coagulation. We have found that incubation of platelets with glucose (>10 mmol/l) leads to increased MPV, potentiation of collagen-evoked platelet aggregation, secretion, and procoagulant response (measured as platelet-dependent thrombin generation and phosphatidylserine expression). Glucose-treated platelets had higher sorbitol content and demonstrated enhanced tubulin polymerization. All the above-mentioned phenomena were reduced following the blocking of AR or by vincristine (microtubule destabilizing agent). Thromboelastography measurements demonstrated that hyperglycemia is associated with reduction of clotting time (R) and increase in the alpha angle (reflects platelet activation). Addition of sorbinil (AR inhibitor) or vincristine normalized R variable and alpha angle. The hyperglycemic conditions may accelerate platelet-related thrombin generation through the activation of polyol pathway, enhanced tubulin polymerization and associated with it rise in platelet volume.
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Affiliation(s)
- Tomasz Rusak
- aDepartment of Physical ChemistrybDepartment of Hematological DiagnosticscDepartment of Biology, Medical University of Bialystok, Bialystok, Poland
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25
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Nigra AD, Santander VS, Dircio-Maldonado R, Amaiden MR, Monesterolo NE, Flores-Guzmán P, Muhlberger T, Rivelli JF, Campetelli AN, Mayani H, Casale CH. Tubulin is retained throughout the human hematopoietic/erythroid cell differentiation process and plays a structural role in sedimentable fraction of mature erythrocytes. Int J Biochem Cell Biol 2017; 91:29-36. [PMID: 28855121 DOI: 10.1016/j.biocel.2017.08.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 07/14/2017] [Accepted: 08/23/2017] [Indexed: 12/24/2022]
Abstract
We investigated the properties of tubulin present in the sedimentable fraction ("Sed-tub") of human erythrocytes, and tracked the location and organization of tubulin in various types of cells during the process of hematopoietic/erythroid differentiation. Sed-tub was sensitive to taxol/nocodazole (drugs that modify microtubule assembly/disassembly), but was organized as part of a protein network rather than in typical microtubule form. This network had a non-uniform "connected-ring" structure, with tubulin localized in the connection areas and associated with other proteins. When tubulin was eliminated from Sed-tub fraction, this connected-ring structure disappeared. Spectrin, a major protein component in Sed-tub fraction, formed a complex with tubulin. During hematopoietic differentiation, tubulin shifts from typical microtubule structure (in pro-erythroblasts) to a disorganized structure (in later stages), and is retained in reticulocytes following enucleation. Thus, tubulin is not completely lost when erythrocytes mature; it continues to play a structural role in the Sed-tub fraction.
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Affiliation(s)
- Ayelén D Nigra
- Departamento de Biología Molecular, Facultad de Ciencias Exactas Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba 5800, Argentina
| | - Verónica S Santander
- Departamento de Biología Molecular, Facultad de Ciencias Exactas Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba 5800, Argentina
| | - Roberto Dircio-Maldonado
- Hematopoietic Stem Cells Laboratory, Oncology Research Unit, IMSS National Medical Center, Mexico City, Mexico
| | - Marina Rafaela Amaiden
- Departamento de Biología Molecular, Facultad de Ciencias Exactas Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba 5800, Argentina
| | - Noelia E Monesterolo
- Departamento de Biología Molecular, Facultad de Ciencias Exactas Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba 5800, Argentina
| | - Patricia Flores-Guzmán
- Hematopoietic Stem Cells Laboratory, Oncology Research Unit, IMSS National Medical Center, Mexico City, Mexico
| | - Tamara Muhlberger
- Departamento de Biología Molecular, Facultad de Ciencias Exactas Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba 5800, Argentina
| | - Juan F Rivelli
- Departamento de Biología Molecular, Facultad de Ciencias Exactas Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba 5800, Argentina
| | - Alexis N Campetelli
- Departamento de Biología Molecular, Facultad de Ciencias Exactas Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba 5800, Argentina
| | - Héctor Mayani
- Hematopoietic Stem Cells Laboratory, Oncology Research Unit, IMSS National Medical Center, Mexico City, Mexico
| | - Cesar H Casale
- Departamento de Biología Molecular, Facultad de Ciencias Exactas Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, Córdoba 5800, Argentina.
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26
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Radosinska J, Vrbjar N. The role of red blood cell deformability and Na,K-ATPase function in selected risk factors of cardiovascular diseases in humans: focus on hypertension, diabetes mellitus and hypercholesterolemia. Physiol Res 2017; 65 Suppl 1:S43-54. [PMID: 27643939 DOI: 10.33549/physiolres.933402] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Deformability of red blood cells (RBC) is the ability of RBC to change their shape in order to pass through narrow capillaries in circulation. Deterioration in deformability of RBC contributes to alterations in microcirculatory blood flow and delivery of oxygen to tissues. Several factors are responsible for maintenance of RBC deformability. One of them is the Na,K-ATPase known as crucial enzyme in maintenance of intracellular ionic homeostasis affecting thus regulation of cellular volume and consequently RBC deformability. Decreased deformability of RBC has been found to be the marker of adverse outcomes in cardiovascular diseases (CVD) and the presence of cardiovascular risk factors influences rheological properties of the blood. This review summarizes knowledge concerning the RBC deformability in connection with selected risk factors of CVD, including hypertension, hyperlipidemia, and diabetes mellitus, based exclusively on papers from human studies. We attempted to provide an update on important issues regarding the role of Na,K-ATPase in RBC deformability. In patients suffering from hypertension as well as diabetes mellitus the Na,K-ATPase appears to be responsible for the changes leading to alterations in RBC deformability. The triggering factor for changes of RBC deformability during hypercholesterolemia seems to be the increased content of cholesterol in erythrocyte membranes.
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Affiliation(s)
- J Radosinska
- Institute of Physiology, Faculty of Medicine, Comenius University in Bratislava, Bratislava, Slovak Republic; Institute for Heart Research, Slovak Academy of Sciences, Bratislava, Slovak Republic.
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27
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Yan X, Xun M, Li J, Wu L, Dou X, Zheng J. Activation of Na+/K+-ATPase attenuates high glucose-induced H9c2 cell apoptosis via suppressing ROS accumulation and MAPKs activities by DRm217. Acta Biochim Biophys Sin (Shanghai) 2016; 48:883-893. [PMID: 27563007 DOI: 10.1093/abbs/gmw079] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Accepted: 05/23/2016] [Indexed: 01/08/2023] Open
Abstract
Hyperglycemia is one of the major factors responsible for the myocardial apoptosis and dysfunction in diabetes. Many studies have proved that there is a close relationship between decreased Na+/K+-ATPase activity and diabetic cardiomyopathy. However, the effect of directly activated Na+/K+-ATPase on high glucose-induced myocardial injury is still unknown. Here we found that DRm217, a Na+/K+-ATPase's DR-region specific monoclonal antibody and direct activator, could prevent high glucose-induced H9c2 cell injury, reactive oxygen species (ROS) release, and mitochondrial dysfunction. High glucose-treatment decreased Na+/K+-ATPase activity and increased intracellular Ca2+ level, whereas DRm217 increased Na+/K+-ATPase activity and alleviated Ca2+ overload. Inhibition of Ca2+ overload or closing sodium calcium exchanger (NCX channel) could reverse high glucose-induced ROS increasing and cell injury. In addition, DRm217 could significantly attenuate high glucose-induced p38, JNK and ERK1/2 phosphorylation, which were involved in high glucose-induced cell injury and ROS accumulation. Our findings suggest that DRm217 may protect against the deleterious effects of high glucose in the heart. Prevention of high glucose-induced myocardial cell injury by specific Na+/K+-ATPase activator may be an attractive therapeutic option.
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Affiliation(s)
- Xiaofei Yan
- Department of Biochemistry and Molecular Biology, Medical College of Xi'an Jiaotong University, Xi'an 710061, China
| | - Meng Xun
- Department of Immunology and Microbiology, Health Science Center, Xi'an Jiaotong University, Xi'an 710061, China
| | - Jing Li
- Department of Biochemistry and Molecular Biology, Medical College of Xi'an Jiaotong University, Xi'an 710061, China
| | - Litao Wu
- Department of Biochemistry and Molecular Biology, Medical College of Xi'an Jiaotong University, Xi'an 710061, China
| | - Xiaojuan Dou
- Department of Biochemistry and Molecular Biology, Medical College of Xi'an Jiaotong University, Xi'an 710061, China
| | - Jin Zheng
- Hospital of Nephrology, First Affiliated Hospital of Medical College of Xi'an Jiaotong University, Xi'an 710061, China
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28
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Alterations of hemorheological parameters and tubulin content in erythrocytes from diabetic subjects. Int J Biochem Cell Biol 2016; 74:109-20. [DOI: 10.1016/j.biocel.2016.02.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Revised: 12/02/2015] [Accepted: 02/20/2016] [Indexed: 12/14/2022]
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29
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Amaiden MR, Santander VS, Monesterolo NE, Nigra AD, Rivelli JF, Campetelli AN, Pie J, Casale CH. Effects of detyrosinated tubulin on Na+
,K+
-ATPase activity and erythrocyte function in hypertensive subjects. FEBS Lett 2014; 589:364-73. [DOI: 10.1016/j.febslet.2014.12.022] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Revised: 11/27/2014] [Accepted: 12/12/2014] [Indexed: 10/24/2022]
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30
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Calgaroto NS, Thomé GR, da Costa P, Baldissareli J, Hussein FA, Schmatz R, Rubin MA, Signor C, Ribeiro DA, Carvalho FB, de Oliveira LS, Pereira LB, Morsch VM, Schetinger MRC. Effect of vitamin D3on behavioural and biochemical parameters in diabetes type 1-induced rats. Cell Biochem Funct 2014; 32:502-10. [DOI: 10.1002/cbf.3044] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2014] [Revised: 05/30/2014] [Accepted: 06/02/2014] [Indexed: 12/18/2022]
Affiliation(s)
- Nicéia Spanholi Calgaroto
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Departamento de Química; Universidade Federal de Santa Maria, Campus Universitário; Santa Maria Rio Grande do Sul Brazil
| | - Gustavo Roberto Thomé
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Departamento de Química; Universidade Federal de Santa Maria, Campus Universitário; Santa Maria Rio Grande do Sul Brazil
| | - Pauline da Costa
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Departamento de Química; Universidade Federal de Santa Maria, Campus Universitário; Santa Maria Rio Grande do Sul Brazil
| | - Jucimara Baldissareli
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Departamento de Química; Universidade Federal de Santa Maria, Campus Universitário; Santa Maria Rio Grande do Sul Brazil
| | - Fátima Abdala Hussein
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Departamento de Química; Universidade Federal de Santa Maria, Campus Universitário; Santa Maria Rio Grande do Sul Brazil
| | - Roberta Schmatz
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Departamento de Química; Universidade Federal de Santa Maria, Campus Universitário; Santa Maria Rio Grande do Sul Brazil
| | - Maribel A. Rubin
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Departamento de Química; Universidade Federal de Santa Maria, Campus Universitário; Santa Maria Rio Grande do Sul Brazil
| | - Cristiane Signor
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Departamento de Química; Universidade Federal de Santa Maria, Campus Universitário; Santa Maria Rio Grande do Sul Brazil
| | - Daniela Aymone Ribeiro
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Departamento de Química; Universidade Federal de Santa Maria, Campus Universitário; Santa Maria Rio Grande do Sul Brazil
| | - Fabiano Barbosa Carvalho
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Departamento de Química; Universidade Federal de Santa Maria, Campus Universitário; Santa Maria Rio Grande do Sul Brazil
| | - Lizielle Souza de Oliveira
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Departamento de Química; Universidade Federal de Santa Maria, Campus Universitário; Santa Maria Rio Grande do Sul Brazil
| | - Luciane Belmonte Pereira
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Departamento de Química; Universidade Federal de Santa Maria, Campus Universitário; Santa Maria Rio Grande do Sul Brazil
| | - Vera Maria Morsch
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Departamento de Química; Universidade Federal de Santa Maria, Campus Universitário; Santa Maria Rio Grande do Sul Brazil
| | - Maria Rosa Chitolina Schetinger
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Departamento de Química; Universidade Federal de Santa Maria, Campus Universitário; Santa Maria Rio Grande do Sul Brazil
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