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Agarwal S, Srivastava VK, Arshad Z, Sharma P, Prakash R. Effect of Dopamine as a Vascular Endothelial Growth Factor Antagonist on the Development of Acute Lung Injury in Sepsis Patients. Cureus 2024; 16:e64102. [PMID: 39114208 PMCID: PMC11305694 DOI: 10.7759/cureus.64102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/08/2024] [Indexed: 08/10/2024] Open
Abstract
BACKGROUND Sepsis is a dysregulated host immune response stemming from a systemic inflammatory response to microbial invasion, encompassing bacteria, viruses, and other pathogens. The vascular endothelial growth factor (VEGF) was initially identified for its potent induction of endothelial permeability. Studies have proposed a therapeutic role of dopamine in mitigating VEGF-induced permeability, shedding light on its potential in acute respiratory distress syndrome (ARDS) management. MAIN OBJECTIVE To determine the effect of dopamine as an inhibitor of VEGF and to prevent the progression of sepsis to acute lung injury (ALI) and ARDS. METHODS A total of 154 critical care unit patients with a diagnosis of sepsis were randomized into two groups: Group I (control group) and Group II (Study group). Both received standard treatment, as per ICU protocol. In addition, the study group (Group II) received a dopamine infusion of 2 micrograms/kg/min. Baseline routine investigation, procalcitonin, and chest X-ray were done. Day one and day seven blood samples were stored for analysis of VEGF levels. Murray's score and sequential organ failure assessment (SOFA) score (organ dysfunction) were calculated from day one to day seven. RESULTS VEGF levels on day seven were significantly lower in the study group compared to the control group (p<0.05). The PaO2/FiO2 ratio at day seven was significantly increased in the study group than in the control group, indicating an improvement in oxygenation status in the study group. There was a mean ICU stay of 9.3 days in the study group versus 11.6 days in the control group (p<0.05). The SOFA score showed a significant improvement in the study group from day five onwards, indicating a therapeutic effect of dopamine on organ dysfunction in sepsis. CONCLUSION Dopamine reduces VEGF and lung injury mediated by increased endothelial permeability.
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Affiliation(s)
- Shivam Agarwal
- Anesthesiology and Critical Care, King George's Medical University, Lucknow, IND
| | - Vinod K Srivastava
- Anesthesiology and Critical Care, King George's Medical University, Lucknow, IND
| | - Zia Arshad
- Anesthesiology and Critical Care, King George's Medical University, Lucknow, IND
| | - Pallavi Sharma
- Anesthesiology and Critical Care, King George's Medical University, Lucknow, IND
| | - Ravi Prakash
- Anesthesiology and Critical Care, King George's Medical University, Lucknow, IND
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Callegari K, Dash S, Uchida H, Shingai Y, Liu C, Khodarkovskaya A, Lee Y, Ito A, Lopez A, Zhang T, Xiang J, Kluk MJ, Sanchez T. Molecular profiling of the stroke-induced alterations in the cerebral microvasculature reveals promising therapeutic candidates. Proc Natl Acad Sci U S A 2023; 120:e2205786120. [PMID: 37058487 PMCID: PMC10120001 DOI: 10.1073/pnas.2205786120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 02/08/2023] [Indexed: 05/11/2023] Open
Abstract
Stroke-induced cerebral microvascular dysfunction contributes to aggravation of neuronal injury and compromises the efficacy of current reperfusion therapies. Understanding the molecular alterations in cerebral microvessels in stroke will provide original opportunities for scientific investigation of novel therapeutic strategies. Toward this goal, using a recently optimized method which minimizes cell activation and preserves endothelial cell interactions and RNA integrity, we conducted a genome-wide transcriptomic analysis of cerebral microvessels in a mouse model of stroke and compared these transcriptomic alterations with the ones observed in human, nonfatal, brain stroke lesions. Results from these unbiased comparative analyses have revealed the common alterations in mouse stroke microvessels and human stroke lesions and identified shared molecular features associated with vascular disease (e.g., Serpine1/Plasminogen Activator Inhibitor-1, Hemoxygenase-1), endothelial activation (e.g., Angiopoietin-2), and alterations in sphingolipid metabolism and signaling (e.g., Sphigosine-1-Phosphate Receptor 2). Sphingolipid profiling of mouse cerebral microvessels validated the transcript data and revealed the enrichment of sphingomyelin and sphingoid species in the cerebral microvasculature compared to brain and the stroke-induced increase in ceramide species. In summary, our study has identified novel molecular alterations in several microvessel-enriched, translationally relevant, and druggable targets, which are potent modulators of endothelial function. Our comparative analyses have revealed the presence of molecular features associated with cerebral microvascular dysfunction in human chronic stroke lesions. The results shared here provide a detailed resource for therapeutic discovery of candidates for neurovascular protection in stroke and potentially, other pathologies exhibiting cerebral microvascular dysfunction.
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Affiliation(s)
- Keri Callegari
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY10065
| | - Sabyasachi Dash
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY10065
| | - Hiroki Uchida
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY10065
| | - Yuto Shingai
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY10065
| | - Catherine Liu
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY10065
| | - Anne Khodarkovskaya
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY10065
| | - Yunkyoung Lee
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY10065
| | - Akira Ito
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY10065
| | - Amanda Lopez
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY10065
| | - Tuo Zhang
- Genomics Resources Core Facility, Weill Cornell Medicine, New York, NY10065
| | - Jenny Xiang
- Genomics Resources Core Facility, Weill Cornell Medicine, New York, NY10065
| | - Michael J. Kluk
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY10065
| | - Teresa Sanchez
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY10065
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY10065
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Allen RS, Khayat CT, Feola AJ, Win AS, Grubman AR, Chesler KC, He L, Dixon JA, Kern TS, Iuvone PM, Thule PM, Pardue MT. Diabetic rats with high levels of endogenous dopamine do not show retinal vascular pathology. Front Neurosci 2023; 17:1125784. [PMID: 37034167 PMCID: PMC10073440 DOI: 10.3389/fnins.2023.1125784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 02/21/2023] [Indexed: 04/11/2023] Open
Abstract
Purpose Limited research exists on the time course of long-term retinal and cerebral deficits in diabetic rodents. Previously, we examined short term (4-8 weeks) deficits in the Goto-Kakizaki (GK) rat model of Type II diabetes. Here, we investigated the long-term (1-8 months) temporal appearance of functional deficits (retinal, cognitive, and motor), retinal vascular pathology, and retinal dopamine levels in the GK rat. Methods In GK rats and Wistar controls, retinal neuronal function (electroretinogram), cognitive function (Y-maze), and motor function (rotarod) were measured at 1, 2, 4, 6, and 8 months of age. In addition, we evaluated retinal vascular function (functional hyperemia) and glucose and insulin tolerance. Retinas from rats euthanized at ≥8 months were assessed for vascular pathology. Dopamine and DOPAC levels were measured via HPLC in retinas from rats euthanized at 1, 2, 8, and 12 months. Results Goto-Kakizaki rats exhibited significant glucose intolerance beginning at 4 weeks and worsening over time (p < 0.001). GK rats also showed significant delays in flicker and oscillatory potential implicit times (p < 0.05 to p < 0.001) beginning at 1 month. Cognitive deficits were observed beginning at 6 months (p < 0.05), but no motor deficits. GK rats showed no deficits in functional hyperemia and no increase in acellular retinal capillaries. Dopamine levels were twice as high in GK vs. Wistar retinas at 1, 2, 8, and 12 months (p < 0.001). Conclusion As shown previously, retinal deficits were detectable prior to cognitive deficits in GK rats. While retinal neuronal function was compromised, retinal vascular pathology was not observed, even at 12+ months. High endogenous levels of dopamine in the GK rat may be acting as an anti-angiogenic and providing protection against vascular pathology.
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Affiliation(s)
- Rachael S. Allen
- Atlanta VA Center for Visual and Neurocognitive Rehabilitation, Atlanta VA Healthcare System, Decatur, GA, United States
- Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, United States
| | - Cara T. Khayat
- Atlanta VA Center for Visual and Neurocognitive Rehabilitation, Atlanta VA Healthcare System, Decatur, GA, United States
| | - Andrew J. Feola
- Atlanta VA Center for Visual and Neurocognitive Rehabilitation, Atlanta VA Healthcare System, Decatur, GA, United States
- Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, United States
- Department of Ophthalmology, Emory University, Atlanta, GA, United States
| | - Alice S. Win
- Atlanta VA Center for Visual and Neurocognitive Rehabilitation, Atlanta VA Healthcare System, Decatur, GA, United States
- Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, United States
| | - Allison R. Grubman
- Atlanta VA Center for Visual and Neurocognitive Rehabilitation, Atlanta VA Healthcare System, Decatur, GA, United States
- Department of Ophthalmology, Emory University, Atlanta, GA, United States
| | - Kyle C. Chesler
- Atlanta VA Center for Visual and Neurocognitive Rehabilitation, Atlanta VA Healthcare System, Decatur, GA, United States
- Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, United States
| | - Li He
- Department of Ophthalmology, Emory University, Atlanta, GA, United States
- Department of Pharmacology and Chemical Biology, Emory University, Atlanta, GA, United States
| | - Jendayi A. Dixon
- Department of Ophthalmology, Emory University, Atlanta, GA, United States
| | - Timothy S. Kern
- Department of Pharmacology, Case Western Reserve University, Cleveland, OH, United States
- Veterans Administration Medical Center Research Service, Cleveland, OH, United States
- Gavin Herbert Eye Institute, University of California, Irvine, Irvine, CA, United States
| | - P. Michael Iuvone
- Department of Ophthalmology, Emory University, Atlanta, GA, United States
- Department of Pharmacology and Chemical Biology, Emory University, Atlanta, GA, United States
| | - Peter M. Thule
- Section Endocrinology and Metabolism, Atlanta VA Medical Center, Emory University School of Medicine, Decatur, GA, United States
| | - Machelle T. Pardue
- Atlanta VA Center for Visual and Neurocognitive Rehabilitation, Atlanta VA Healthcare System, Decatur, GA, United States
- Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, United States
- Department of Ophthalmology, Emory University, Atlanta, GA, United States
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Channer B, Matt SM, Nickoloff-Bybel EA, Pappa V, Agarwal Y, Wickman J, Gaskill PJ. Dopamine, Immunity, and Disease. Pharmacol Rev 2023; 75:62-158. [PMID: 36757901 PMCID: PMC9832385 DOI: 10.1124/pharmrev.122.000618] [Citation(s) in RCA: 53] [Impact Index Per Article: 53.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 08/02/2022] [Accepted: 08/04/2022] [Indexed: 12/14/2022] Open
Abstract
The neurotransmitter dopamine is a key factor in central nervous system (CNS) function, regulating many processes including reward, movement, and cognition. Dopamine also regulates critical functions in peripheral organs, such as blood pressure, renal activity, and intestinal motility. Beyond these functions, a growing body of evidence indicates that dopamine is an important immunoregulatory factor. Most types of immune cells express dopamine receptors and other dopaminergic proteins, and many immune cells take up, produce, store, and/or release dopamine, suggesting that dopaminergic immunomodulation is important for immune function. Targeting these pathways could be a promising avenue for the treatment of inflammation and disease, but despite increasing research in this area, data on the specific effects of dopamine on many immune cells and disease processes remain inconsistent and poorly understood. Therefore, this review integrates the current knowledge of the role of dopamine in immune cell function and inflammatory signaling across systems. We also discuss the current understanding of dopaminergic regulation of immune signaling in the CNS and peripheral tissues, highlighting the role of dopaminergic immunomodulation in diseases such as Parkinson's disease, several neuropsychiatric conditions, neurologic human immunodeficiency virus, inflammatory bowel disease, rheumatoid arthritis, and others. Careful consideration is given to the influence of experimental design on results, and we note a number of areas in need of further research. Overall, this review integrates our knowledge of dopaminergic immunology at the cellular, tissue, and disease level and prompts the development of therapeutics and strategies targeted toward ameliorating disease through dopaminergic regulation of immunity. SIGNIFICANCE STATEMENT: Canonically, dopamine is recognized as a neurotransmitter involved in the regulation of movement, cognition, and reward. However, dopamine also acts as an immune modulator in the central nervous system and periphery. This review comprehensively assesses the current knowledge of dopaminergic immunomodulation and the role of dopamine in disease pathogenesis at the cellular and tissue level. This will provide broad access to this information across fields, identify areas in need of further investigation, and drive the development of dopaminergic therapeutic strategies.
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Affiliation(s)
- Breana Channer
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania (B.C., S.M.M., E.A.N-B., Y.A., J.W., P.J.G.); and The Children's Hospital of Philadelphia Research Institute, Philadelphia, Pennsylvania (V.P.)
| | - Stephanie M Matt
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania (B.C., S.M.M., E.A.N-B., Y.A., J.W., P.J.G.); and The Children's Hospital of Philadelphia Research Institute, Philadelphia, Pennsylvania (V.P.)
| | - Emily A Nickoloff-Bybel
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania (B.C., S.M.M., E.A.N-B., Y.A., J.W., P.J.G.); and The Children's Hospital of Philadelphia Research Institute, Philadelphia, Pennsylvania (V.P.)
| | - Vasiliki Pappa
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania (B.C., S.M.M., E.A.N-B., Y.A., J.W., P.J.G.); and The Children's Hospital of Philadelphia Research Institute, Philadelphia, Pennsylvania (V.P.)
| | - Yash Agarwal
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania (B.C., S.M.M., E.A.N-B., Y.A., J.W., P.J.G.); and The Children's Hospital of Philadelphia Research Institute, Philadelphia, Pennsylvania (V.P.)
| | - Jason Wickman
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania (B.C., S.M.M., E.A.N-B., Y.A., J.W., P.J.G.); and The Children's Hospital of Philadelphia Research Institute, Philadelphia, Pennsylvania (V.P.)
| | - Peter J Gaskill
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania (B.C., S.M.M., E.A.N-B., Y.A., J.W., P.J.G.); and The Children's Hospital of Philadelphia Research Institute, Philadelphia, Pennsylvania (V.P.)
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Kern TS, Du Y, Tang J, Lee CA, Liu H, Dreffs A, Leinonen H, Antonetti DA, Palczewski K. Regulation of Adrenergic, Serotonin, and Dopamine Receptors to Inhibit Diabetic Retinopathy: Monotherapies versus Combination Therapies. Mol Pharmacol 2021; 100:470-479. [PMID: 34393108 PMCID: PMC9175131 DOI: 10.1124/molpharm.121.000278] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 08/03/2021] [Indexed: 11/22/2022] Open
Abstract
We compared monotherapies and combinations of therapies that regulate G-protein-coupled receptors (GPCRs) with respect to their abilities to inhibit early stages of diabetic retinopathy (DR) in streptozotocin-diabetic mice. Metoprolol (MTP; 0.04-1.0 mg/kg b.wt./day), bromocriptine (BRM; 0.01-0.1 mg/kg b.wt./day), doxazosin (DOX; 0.01-1.0 mg/kg b.wt./day), or tamsulosin (TAM; 0.05-0.25 mg/kg b.wt./day) were injected individually daily for 2 months in dose-response studies to assess their effects on the diabetes-induced increases in retinal superoxide and leukocyte-mediated cytotoxicity against vascular endothelial cells, both of which abnormalities have been implicated in the development of DR. Each of the individual drugs inhibited the diabetes-induced increase in retinal superoxide at the higher concentrations tested, but the inhibition was lost at lower doses. To determine whether combination therapies had superior effects over individual drugs, we intentionally selected for each drug a low dose that had little or no effect on the diabetes-induced retinal superoxide for use separately or in combinations in 8-month studies of retinal function, vascular permeability, and capillary degeneration in diabetes. At the low doses used, combinations of the drugs generally were more effective than individual drugs, but the low-dose MTP alone totally inhibited diabetes-induced reduction in a vision task, BRM or DOX alone totally inhibited the vascular permeability defect, and DOX alone totally inhibited diabetes-induced degeneration of retinal capillaries. Although low-dose MTP, BRM, DOX, or TAM individually had beneficial effects on some endpoints, combination of the therapies better inhibited the spectrum of DR lesions evaluated. SIGNIFICANCE STATEMENT: The pathogenesis of early stages of diabetic retinopathy remains incompletely understood, but multiple different cell types are believed to be involved in the pathogenic process. We have compared the effects of monotherapies to those of combinations of drugs that regulate GPCR signaling pathways with respect to their relative abilities to inhibit the development of early diabetic retinopathy.
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Affiliation(s)
- Timothy S Kern
- Center for Translational Vision Research, Gavin Herbert Eye Institute (T.S.K., Y.D., H.L., K.P.), Department of Physiology and Biophysics (K.P.), and Department of Chemistry (K.P.), University of California-Irvine, Irvine, California; Veterans Administration Medical Center, Long Beach Healthcare System, Research Service, Long Beach, California (T.S.K.); Department of Ophthalmology, Case Western Reserve University, Cleveland, Ohio (J.T., C.A.L.); and Kellogg Eye Center, Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, Michigan (A.D., D.A.A.)
| | - Yunpeng Du
- Center for Translational Vision Research, Gavin Herbert Eye Institute (T.S.K., Y.D., H.L., K.P.), Department of Physiology and Biophysics (K.P.), and Department of Chemistry (K.P.), University of California-Irvine, Irvine, California; Veterans Administration Medical Center, Long Beach Healthcare System, Research Service, Long Beach, California (T.S.K.); Department of Ophthalmology, Case Western Reserve University, Cleveland, Ohio (J.T., C.A.L.); and Kellogg Eye Center, Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, Michigan (A.D., D.A.A.)
| | - Jie Tang
- Center for Translational Vision Research, Gavin Herbert Eye Institute (T.S.K., Y.D., H.L., K.P.), Department of Physiology and Biophysics (K.P.), and Department of Chemistry (K.P.), University of California-Irvine, Irvine, California; Veterans Administration Medical Center, Long Beach Healthcare System, Research Service, Long Beach, California (T.S.K.); Department of Ophthalmology, Case Western Reserve University, Cleveland, Ohio (J.T., C.A.L.); and Kellogg Eye Center, Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, Michigan (A.D., D.A.A.)
| | - Chieh Allen Lee
- Center for Translational Vision Research, Gavin Herbert Eye Institute (T.S.K., Y.D., H.L., K.P.), Department of Physiology and Biophysics (K.P.), and Department of Chemistry (K.P.), University of California-Irvine, Irvine, California; Veterans Administration Medical Center, Long Beach Healthcare System, Research Service, Long Beach, California (T.S.K.); Department of Ophthalmology, Case Western Reserve University, Cleveland, Ohio (J.T., C.A.L.); and Kellogg Eye Center, Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, Michigan (A.D., D.A.A.)
| | - Haitao Liu
- Center for Translational Vision Research, Gavin Herbert Eye Institute (T.S.K., Y.D., H.L., K.P.), Department of Physiology and Biophysics (K.P.), and Department of Chemistry (K.P.), University of California-Irvine, Irvine, California; Veterans Administration Medical Center, Long Beach Healthcare System, Research Service, Long Beach, California (T.S.K.); Department of Ophthalmology, Case Western Reserve University, Cleveland, Ohio (J.T., C.A.L.); and Kellogg Eye Center, Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, Michigan (A.D., D.A.A.)
| | - Alyssa Dreffs
- Center for Translational Vision Research, Gavin Herbert Eye Institute (T.S.K., Y.D., H.L., K.P.), Department of Physiology and Biophysics (K.P.), and Department of Chemistry (K.P.), University of California-Irvine, Irvine, California; Veterans Administration Medical Center, Long Beach Healthcare System, Research Service, Long Beach, California (T.S.K.); Department of Ophthalmology, Case Western Reserve University, Cleveland, Ohio (J.T., C.A.L.); and Kellogg Eye Center, Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, Michigan (A.D., D.A.A.)
| | - Henri Leinonen
- Center for Translational Vision Research, Gavin Herbert Eye Institute (T.S.K., Y.D., H.L., K.P.), Department of Physiology and Biophysics (K.P.), and Department of Chemistry (K.P.), University of California-Irvine, Irvine, California; Veterans Administration Medical Center, Long Beach Healthcare System, Research Service, Long Beach, California (T.S.K.); Department of Ophthalmology, Case Western Reserve University, Cleveland, Ohio (J.T., C.A.L.); and Kellogg Eye Center, Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, Michigan (A.D., D.A.A.)
| | - David A Antonetti
- Center for Translational Vision Research, Gavin Herbert Eye Institute (T.S.K., Y.D., H.L., K.P.), Department of Physiology and Biophysics (K.P.), and Department of Chemistry (K.P.), University of California-Irvine, Irvine, California; Veterans Administration Medical Center, Long Beach Healthcare System, Research Service, Long Beach, California (T.S.K.); Department of Ophthalmology, Case Western Reserve University, Cleveland, Ohio (J.T., C.A.L.); and Kellogg Eye Center, Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, Michigan (A.D., D.A.A.)
| | - Krzysztof Palczewski
- Center for Translational Vision Research, Gavin Herbert Eye Institute (T.S.K., Y.D., H.L., K.P.), Department of Physiology and Biophysics (K.P.), and Department of Chemistry (K.P.), University of California-Irvine, Irvine, California; Veterans Administration Medical Center, Long Beach Healthcare System, Research Service, Long Beach, California (T.S.K.); Department of Ophthalmology, Case Western Reserve University, Cleveland, Ohio (J.T., C.A.L.); and Kellogg Eye Center, Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, Michigan (A.D., D.A.A.)
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Ramadan HK, Meghezel EZM, Abdel-Malek MO, Askar AA, Hetta HF, Mahmoud AA, Abdel-Aal AM. Correlation Between Vascular Endothelial Growth Factor and Long-Term Occurrence of HCV-Related Hepatocellular Carcinoma After Treatment with Direct-Acting Antivirals. Cancer Invest 2021; 39:653-660. [PMID: 34224250 DOI: 10.1080/07357907.2021.1951751] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
We aimed to evaluate the correlation between vascular endothelial growth factor (VEGF) and long-term occurrence of hepatocellular carcinoma after HCV treatment with direct-acting antivirals (DAAs) and the HCC stage. Two groups with HCV-related liver cirrhosis and HCC were included: group 1, HCC following DAAs; group 2, HCC did not receive DAAs. The serum level of VEGF and HCC staging was evaluated. The duration between DAAs and HCC was 21.81 ± 11.66 months. Portal vein thrombosis (PVT) was observed more in group 1 (31%). VEGF was relatively elevated in group 1 compared to group 2. HCC patients after DAAs, showed elevated VEGF with frequent PVT.
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Affiliation(s)
- Haidi K Ramadan
- Department of Tropical Medicine and Gastroenterology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - El-Zahraa M Meghezel
- Department of Tropical Medicine and Gastroenterology, Faculty of Medicine, Sohag University, Sohag, Egypt
| | - Mohammed O Abdel-Malek
- Department of Tropical Medicine and Gastroenterology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Ashraf A Askar
- Department of Internal Medicine, Faculty of Medicine, Sohag University, Sohag, Egypt
| | - Helal F Hetta
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Assiut University, Assiut, Egypt.,Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Amal A Mahmoud
- Department of Clinical Pathology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Amal M Abdel-Aal
- Department of Clinical Pathology, Faculty of Medicine, Assiut University, Assiut, Egypt
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Network pharmacology-based and clinically relevant prediction of active ingredients and potential targets of Chinese herbs on stage IV lung adenocarcinoma patients. J Cancer Res Clin Oncol 2021; 147:2079-2092. [PMID: 33797608 DOI: 10.1007/s00432-020-03488-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 11/30/2020] [Indexed: 10/21/2022]
Abstract
AIM This study is designed to ascertain the relative molecular targets of effective Chinese herbs in treating stage IV lung adenocarcinoma based on clinical data and network pharmacology. In addition, we showed that Chinese Herbal Medicine (CHM) treatment was associated with survival benefit for patients with stage IV lung adenocarcinoma and identified 18 herbs beneficial to survival through correlation analysis. BACKGROUND Increasing evidence has shown that CHM has efficient therapeutic effects for advanced lung adenocarcinoma, while active ingredients and potential targets remain unclear. METHODS Kaplan-Meier method and Cox regression analysis were used to evaluate the survival benefit of CHM treatment, and correlation analysis was applied to identify the most effective components in the formulas. A network pharmacological approach was used to decipher the potential therapeutic mechanisms of CHM. RESULTS CHM treatment was an independent protective factor. The hazard ratio (HR) was 0.487 (95% CI 0.293-0.807; P = 0.005). Patients in the CHM group had a longer median survival time (31 months) compared with the non-CHM group (19 months; P < 0.001). 18 out of the total 241 herbs were significantly correlated with favorable survival outcomes (P < 0.05), likely representing the most effective components in these formulas. Bioinformatics analysis suggested that the 18 herbs realize anti-lung-adenocarcinoma activity mainly through (1) inhibiting the activity of some growth factors' receptors, such as HGFR, EGFR, and IGFR. (2) Suppressing angiogenesis not only through VEGFR and PDGFR, but also through the function of neurotransmitters such as dopamine and serotonin. (3) Inhibiting the Ras signaling pathway directly through Ras as well as through ALK and FNTA/FNTB. CONCLUSIONS We performed a network pharmacological method to decipher the underlying mechanisms, which provides a good foundation for herbal research based on clinical data.
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Chen Q, Tan L, Jin Z, Liu Y, Zhang Z. Downregulation of CRABP2 Inhibit the Tumorigenesis of Hepatocellular Carcinoma In Vivo and In Vitro. BIOMED RESEARCH INTERNATIONAL 2020; 2020:3098327. [PMID: 32685464 PMCID: PMC7334762 DOI: 10.1155/2020/3098327] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 06/16/2020] [Indexed: 12/14/2022]
Abstract
Cellular retinoic acid-binding protein 2 (CRABP2) binds retinoic acid (RA) in the cytoplasm and transports it into the nucleus, allowing for the regulation of specific downstream signal pathway. Abnormal expression of CRABP2 has been detected in the development of several tumors. However, the role of CRABP2 in hepatocellular carcinoma (HCC) has never been revealed. The current study aimed to investigate the role of CRABP2 in HCC and illuminate the potential molecular mechanisms. The expression of CRABP2 in HCC tissues and cell lines was detected by western blotting and immunohistochemistry assays. Our results demonstrated that the expression levels of CRABP2 in HCC tissues were elevated with the tumor stage development, and it was also elevated in HCC cell lines. To evaluate the function of CRABP2, shRNA-knockdown strategy was used in HCC cells. Cell proliferation, metastasis, and apoptosis were analyzed by CCK-8, EdU staining, transwell, and flow cytometry assays, respectively. Based on our results, knockdown of CRABP2 by shRNA resulted in the inhibition of tumor proliferation, migration, and invasion in vitro, followed by increased tumor apoptosis-related protein expression and decreased ERK/VEGF pathway-related proteins expression. CRABP2 silencing in HCC cells also resulted in the failure to develop tumors in vivo. These results provide important insights into the role of CRABP2 in the development and development of HCC. Based on our findings, CRABP2 may be used as a novel diagnostic biomarker, and regulation of CRABP2 in HCC may provide a potential molecular target for the therapy of HCC.
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Affiliation(s)
- Qingmin Chen
- Department of General Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Ludong Tan
- Department of General Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Zhe Jin
- Department of General Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Yahui Liu
- Department of General Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Ze Zhang
- Department of General Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, China
- Department of Hepatobiliary-Pancreatic Surgery, China-Japan Union Hospital of Jilin University, 126 Xiantai Street, Changchun, Jilin 130000, China
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9
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Nguyen MTT, Vemaraju S, Nayak G, Odaka Y, Buhr ED, Alonzo N, Tran U, Batie M, Upton BA, Darvas M, Kozmik Z, Rao S, Hegde RS, Iuvone PM, Van Gelder RN, Lang RA. An opsin 5-dopamine pathway mediates light-dependent vascular development in the eye. Nat Cell Biol 2019; 21:420-429. [PMID: 30936473 PMCID: PMC6573021 DOI: 10.1038/s41556-019-0301-x] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 02/19/2019] [Indexed: 02/07/2023]
Abstract
During mouse postnatal eye development, the embryonic hyaloid vascular network regresses from the vitreous as an adaption for high-acuity vision. This process occurs with precisely controlled timing. Here, we show that opsin 5 (OPN5; also known as neuropsin)-dependent retinal light responses regulate vascular development in the postnatal eye. In Opn5-null mice, hyaloid vessels regress precociously. We demonstrate that 380-nm light stimulation via OPN5 and VGAT (the vesicular GABA/glycine transporter) in retinal ganglion cells enhances the activity of inner retinal DAT (also known as SLC6A3; a dopamine reuptake transporter) and thus suppresses vitreal dopamine. In turn, dopamine acts directly on hyaloid vascular endothelial cells to suppress the activity of vascular endothelial growth factor receptor 2 (VEGFR2) and promote hyaloid vessel regression. With OPN5 loss of function, the vitreous dopamine level is elevated and results in premature hyaloid regression. These investigations identify violet light as a developmental timing cue that, via an OPN5-dopamine pathway, regulates optic axis clearance in preparation for visual function.
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Affiliation(s)
- Minh-Thanh T Nguyen
- The Visual Systems Group, Abrahamson Pediatric Eye Institute, Division of Pediatric Ophthalmology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Center for Chronobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Shruti Vemaraju
- The Visual Systems Group, Abrahamson Pediatric Eye Institute, Division of Pediatric Ophthalmology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Center for Chronobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Gowri Nayak
- The Visual Systems Group, Abrahamson Pediatric Eye Institute, Division of Pediatric Ophthalmology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Center for Chronobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Yoshinobu Odaka
- The Visual Systems Group, Abrahamson Pediatric Eye Institute, Division of Pediatric Ophthalmology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Center for Chronobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Ethan D Buhr
- Department of Ophthalmology, University of Washington Medical School, Seattle, WA, USA
| | - Nuria Alonzo
- The Visual Systems Group, Abrahamson Pediatric Eye Institute, Division of Pediatric Ophthalmology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Uyen Tran
- The Visual Systems Group, Abrahamson Pediatric Eye Institute, Division of Pediatric Ophthalmology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Matthew Batie
- Clinical Engineering, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Brian A Upton
- The Visual Systems Group, Abrahamson Pediatric Eye Institute, Division of Pediatric Ophthalmology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Center for Chronobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Martin Darvas
- Pathology, University of Washington Medical School, Seattle, WA, USA
| | - Zbynek Kozmik
- Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Sujata Rao
- Ophthalmic Research, Cole Eye Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Rashmi S Hegde
- Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - P Michael Iuvone
- Department of Ophthalmology, Emory University School of Medicine, Atlanta, GA, USA
- Pharmacology, Emory University School of Medicine, Atlanta, GA, USA
| | - Russell N Van Gelder
- Department of Ophthalmology, University of Washington Medical School, Seattle, WA, USA
- Pathology, University of Washington Medical School, Seattle, WA, USA
- Biological Structure, University of Washington Medical School, Seattle, WA, USA
| | - Richard A Lang
- The Visual Systems Group, Abrahamson Pediatric Eye Institute, Division of Pediatric Ophthalmology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.
- Center for Chronobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.
- Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.
- Department of Ophthalmology, University of Cincinnati, College of Medicine, Cincinnati, OH, USA.
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10
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Elaskalani O, Berndt MC, Falasca M, Metharom P. Targeting Platelets for the Treatment of Cancer. Cancers (Basel) 2017; 9:E94. [PMID: 28737696 PMCID: PMC5532630 DOI: 10.3390/cancers9070094] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 07/18/2017] [Accepted: 07/19/2017] [Indexed: 12/21/2022] Open
Abstract
The majority of cancer-associated mortality results from the ability of tumour cells to metastasise leading to multifunctional organ failure and death. Disseminated tumour cells in the blood circulation are faced with major challenges such as rheological shear stresses and cell-mediated cytotoxicity mediated by natural killer cells. Nevertheless, circulating tumour cells with metastatic ability appear equipped to exploit host cells to aid their survival. Despite the long interest in targeting tumour-associated host cells such as platelets for cancer treatment, the clinical benefit of this strategy is still under question. In this review, we provide a summary of the latest mechanistic and clinical evidence to evaluate the validity of targeting platelets in cancer.
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Affiliation(s)
- Omar Elaskalani
- Faculty of Health Sciences, Curtin University, Perth 6100, Australia.
- Curtin Health Innovation Research Institute (CHIRI), Curtin University, Perth 6100, Australia.
| | - Michael C Berndt
- Faculty of Health Sciences, Curtin University, Perth 6100, Australia.
| | - Marco Falasca
- Faculty of Health Sciences, Curtin University, Perth 6100, Australia.
- Curtin Health Innovation Research Institute (CHIRI), Curtin University, Perth 6100, Australia.
- School of Biomedical Sciences, Curtin University, Perth 6100, Australia.
| | - Pat Metharom
- Faculty of Health Sciences, Curtin University, Perth 6100, Australia.
- Curtin Health Innovation Research Institute (CHIRI), Curtin University, Perth 6100, Australia.
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11
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Liu F, Luo L, Wei Y, Wang W, Wen T, Yang J, Xu M, Li B. Association of VEGFA polymorphisms with susceptibility and clinical outcome of hepatocellular carcinoma in a Chinese Han population. Oncotarget 2017; 8:16488-16497. [PMID: 28147320 PMCID: PMC5369979 DOI: 10.18632/oncotarget.14870] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 01/16/2017] [Indexed: 02/05/2023] Open
Abstract
Vascular endothelial growth factor A (VEGFA) is an important angiogenesis regulator, which plays an important role in angiogenesis and progression of tumor, including hepatocellular carcinoma (HCC). We aimed at determining whether single nucleotide polymorphisms of VEGFA gene influence the development and clinical outcomes of HCC. We analyzed four potential functional polymorphisms (936C/T, 634G/C, 1612G/A, 2578C/A) of VEGFA gene in 476 HCC patients and 526 controls using matrix-assisted laser desorption ionization time-of-flight mass spectrometry method. Serum VEGF levels were measured by enzyme-linked immunosorbent assay. The Kaplan-Meier methods with log-rank test and Cox regression models were used to compare survival of resected HCC patients according to the genotype. We found that only the VEGFA 2578C/A polymorphism was significantly associated with decreased risk of HCC (AA/AC vs. CC; adjusted OR = 0.69, 95% CI = 0.51-0.93). Furthermore, the 2578C/A polymorphism was associated with significantly decreased postoperative recurrence (AA/AC vs. CC, adjusted OR = 0.51; 95% CI, 0.29-0.88) and improved overall survival (AA/AC vs. CC, adjusted HR = 0.27, 95% CI = 0.13-0.52) of resected HCC patients. In addition, the VEGF serum levels in HCC patients were significantly higher than those in healthy controls, although no significant association between VEGFA genotype and serum levels of VEGF was observed. These results suggest that the VEGFA 2578 C/A polymorphism may play a potential role in the development and clinical outcome of HCC among Chinese Han population.
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Affiliation(s)
- Fei Liu
- Department of Liver Surgery and Liver Transplantation Center, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan Province, China
| | - Limei Luo
- Department of Clinical Immunological Laboratory, West China Hospital, Sichuan University, 610041, China
| | - Yonggang Wei
- Department of Liver Surgery and Liver Transplantation Center, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan Province, China
| | - Wentao Wang
- Department of Liver Surgery and Liver Transplantation Center, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan Province, China
| | - Tianfu Wen
- Department of Liver Surgery and Liver Transplantation Center, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan Province, China
| | - Jiayin Yang
- Department of Liver Surgery and Liver Transplantation Center, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan Province, China
| | - Mingqing Xu
- Department of Liver Surgery and Liver Transplantation Center, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan Province, China
| | - Bo Li
- Department of Liver Surgery and Liver Transplantation Center, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan Province, China
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12
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Chauvet N, Romanò N, Lafont C, Guillou A, Galibert E, Bonnefont X, Le Tissier P, Fedele M, Fusco A, Mollard P, Coutry N. Complementary actions of dopamine D2 receptor agonist and anti-vegf therapy on tumoral vessel normalization in a transgenic mouse model. Int J Cancer 2017; 140:2150-2161. [PMID: 28152577 DOI: 10.1002/ijc.30628] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Revised: 01/11/2017] [Accepted: 01/25/2017] [Indexed: 12/21/2022]
Abstract
Angiogenesis contributes in multiple ways to disease progression in tumors and reduces treatment efficiency. Molecular therapies targeting Vegf signaling combined with chemotherapy or other drugs exhibit promising results to improve efficacy of treatment. Dopamine has been recently proposed to be a novel safe anti-angiogenic drug that stabilizes abnormal blood vessels and increases therapeutic efficacy. Here, we aimed to identify a treatment to normalize tumoral vessels and restore normal blood perfusion in tumor tissue with a Vegf receptor inhibitor and/or a ligand of dopamine G protein-coupled receptor D2 (D2R). Dopamine, via its action on D2R, is an endogenous effector of the pituitary gland, and we took advantage of this system to address this question. We have used a previously described Hmga2/T mouse model developing haemorrhagic prolactin-secreting adenomas. In mutant mice, blood vessels are profoundly altered in tumors, and an aberrant arterial vascularization develops leading to the loss of dopamine supply. D2R agonist treatment blocks tumor growth, induces regression of the aberrant blood supply and normalizes blood vessels. A chronic treatment is able to restore the altered balance between pro- and anti-angiogenic factors. Remarkably, an acute treatment induces an upregulation of the stabilizing factor Angiopoietin 1. An anti-Vegf therapy is also effective to restrain tumor growth and improves vascular remodeling. Importantly, only the combination treatment suppresses intratumoral hemorrhage and restores blood vessel perfusion, suggesting that it might represent an attractive therapy targeting tumor vasculature. Similar strategies targeting other ligands of GPCRs involved in angiogenesis may identify novel therapeutic opportunities for cancer.
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Affiliation(s)
- Norbert Chauvet
- CNRS, UMR-5203, Institut de Génomique Fonctionnelle, Département de Physiologie, Montpellier, F-34094, France.,INSERM, U1191, Montpellier, F-34094, France.,Université de Montpellier, UMR-5203, Montpellier, F-34094, France
| | - Nicola Romanò
- CNRS, UMR-5203, Institut de Génomique Fonctionnelle, Département de Physiologie, Montpellier, F-34094, France.,INSERM, U1191, Montpellier, F-34094, France.,Université de Montpellier, UMR-5203, Montpellier, F-34094, France
| | - Chrystel Lafont
- CNRS, UMR-5203, Institut de Génomique Fonctionnelle, Département de Physiologie, Montpellier, F-34094, France.,INSERM, U1191, Montpellier, F-34094, France.,Université de Montpellier, UMR-5203, Montpellier, F-34094, France
| | - Anne Guillou
- CNRS, UMR-5203, Institut de Génomique Fonctionnelle, Département de Physiologie, Montpellier, F-34094, France.,INSERM, U1191, Montpellier, F-34094, France.,Université de Montpellier, UMR-5203, Montpellier, F-34094, France
| | - Evelyne Galibert
- CNRS, UMR-5203, Institut de Génomique Fonctionnelle, Département de Physiologie, Montpellier, F-34094, France.,INSERM, U1191, Montpellier, F-34094, France.,Université de Montpellier, UMR-5203, Montpellier, F-34094, France
| | - Xavier Bonnefont
- CNRS, UMR-5203, Institut de Génomique Fonctionnelle, Département de Physiologie, Montpellier, F-34094, France.,INSERM, U1191, Montpellier, F-34094, France.,Université de Montpellier, UMR-5203, Montpellier, F-34094, France
| | - Paul Le Tissier
- Centre for Integrative Physiology, University of Edinburgh, Edinburgh, EH8 9XD, United Kingdom
| | - Monica Fedele
- Istituto di Endocrinologia ed Oncologia Sperimentale del CNR e/o Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli "Federico II", Naples, 80131, Italy
| | - Alfredo Fusco
- Istituto di Endocrinologia ed Oncologia Sperimentale del CNR e/o Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli "Federico II", Naples, 80131, Italy
| | - Patrice Mollard
- CNRS, UMR-5203, Institut de Génomique Fonctionnelle, Département de Physiologie, Montpellier, F-34094, France.,INSERM, U1191, Montpellier, F-34094, France.,Université de Montpellier, UMR-5203, Montpellier, F-34094, France
| | - Nathalie Coutry
- CNRS, UMR-5203, Institut de Génomique Fonctionnelle, Département de Physiologie, Montpellier, F-34094, France.,INSERM, U1191, Montpellier, F-34094, France.,Université de Montpellier, UMR-5203, Montpellier, F-34094, France
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13
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Immunomodulatory Effects Mediated by Dopamine. J Immunol Res 2016; 2016:3160486. [PMID: 27795960 PMCID: PMC5067323 DOI: 10.1155/2016/3160486] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 07/29/2016] [Accepted: 08/08/2016] [Indexed: 01/11/2023] Open
Abstract
Dopamine (DA), a neurotransmitter in the central nervous system (CNS), has modulatory functions at the systemic level. The peripheral and central nervous systems have independent dopaminergic system (DAS) that share mechanisms and molecular machinery. In the past century, experimental evidence has accumulated on the proteins knowledge that is involved in the synthesis, reuptake, and transportation of DA in leukocytes and the differential expression of the D1-like (D1R and D5R) and D2-like receptors (D2R, D3R, and D4R). The expression of these components depends on the state of cellular activation and the concentration and time of exposure to DA. Receptors that are expressed in leukocytes are linked to signaling pathways that are mediated by changes in cAMP concentration, which in turn triggers changes in phenotype and cellular function. According to the leukocyte lineage, the effects of DA are associated with such processes as respiratory burst, cytokine and antibody secretion, chemotaxis, apoptosis, and cytotoxicity. In clinical conditions such as schizophrenia, Parkinson disease, Tourette syndrome, and multiple sclerosis (MS), there are evident alterations during immune responses in leukocytes, in which changes in DA receptor density have been observed. Several groups have proposed that these findings are useful in establishing clinical status and clinical markers.
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14
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Liao CG, Yao L, Xie W, Liu L, Wu SD, Lu N, Huang JG, Kong LM, Zhang HL. Basigin-2 upregulated by receptor activator of NF-κB ligand enhances lung cancer-induced osteolytic lesions. Cancer Cell Int 2016; 16:28. [PMID: 27042161 PMCID: PMC4818914 DOI: 10.1186/s12935-016-0302-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 03/24/2016] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Lung cancer bone metastasis causes poor prognosis. Basigin-2, a novel cancer-associated biomarker, is upregulated in lung cancer and has been linked with tumor progression. But little is known about the role of basigin-2 in lung cancer bone metastasis and osteolytic lesion. METHODS Basigin-2 expression was evaluated in biopsy tissue specimens of 20 lung cancer patients with bone metastases via immunohistochemistry. Invasion assay and MTT proliferation assay were performed to test the invasion and proliferation of lung cancer cell after modulated basigin-2 expression. The osteoclastic activity of basigin-2 was detected in tibia cancer model by injected of lung cancer cells. The regulation role of receptor activator of NF-κB ligand (RANKL) on basigin-2 and its downstream molecules were measured by real-time quantitative RT-PCR, gelatin zymography and western blot analysis. RESULTS We found that basigin-2 was highly expressed in lung cancer bone metastases. Then, we demonstrated that basigin-2 could promote lung cancer cells invasion, metastasis and proliferation through upregulating metalloproteinases-2 (MMP-2), MMP-9 and vascular endothelial growth factor (VEGF) expression. The lung cancer cells overexpressing basigin-2 strongly induced the osteolytic lesions in immunodeficient mice, which were reduced by treatment with basigin-2 blocking antibody. Furthermore, we explored the enhanced basigin-2 molecular mechanism in lung cancer bone metastasis. Our results indicated the RANKL, pivotal for the control of bone resorption, could increase basigin-2 and its downstream molecules MMP-2, MMP-9 and VEGF expression in vitro. CONCLUSIONS Basigin-2 upregulated by RANKL induces MMPs and VEGF, which may increase lung cancer cell metastasis ability and support osteoclastic activity. Thus, our data suggest important roles for basigin-2 in lung cancer-induced osteolytic lesion and implicate this protein potential application as a target for lung cancer bone metastasis therapy.
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Affiliation(s)
- Cheng-Gong Liao
- Department of Oncology, Tangdu Hospital, Cancer Institute, Fourth Military Medical University, Xi'an, 710038 People's Republic of China.,Department of Oncology, Urumqi General Hospital of Lanzhou Military Command of PLA, Urumqi, 830000 People's Republic of China
| | - Li Yao
- Department of Pathology, Tangdu Hospital, Fourth Military Medical University, Xi'an, 710038 People's Republic of China
| | - Wei Xie
- Department of Oncology, Urumqi General Hospital of Lanzhou Military Command of PLA, Urumqi, 830000 People's Republic of China
| | - Lili Liu
- Department of Oncology, Tangdu Hospital, Cancer Institute, Fourth Military Medical University, Xi'an, 710038 People's Republic of China
| | - Sheng-Da Wu
- Cadet Brigade, Fourth Military Medical University, Xi'an, 710032 People's Republic of China
| | - Ning Lu
- Department of Oncology, Urumqi General Hospital of Lanzhou Military Command of PLA, Urumqi, 830000 People's Republic of China
| | - Jian-Guo Huang
- Department of Oncology, Urumqi General Hospital of Lanzhou Military Command of PLA, Urumqi, 830000 People's Republic of China
| | - Ling-Min Kong
- Cell Engineering Research Center and Department of Cell Biology, National Translational Science Center for Molecular Medicine, Fourth Military Medical University, Xi'an, 710032 People's Republic of China
| | - He-Long Zhang
- Department of Oncology, Tangdu Hospital, Cancer Institute, Fourth Military Medical University, Xi'an, 710038 People's Republic of China
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15
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Innervation of the arterial wall and its modification in atherosclerosis. Auton Neurosci 2015; 193:7-11. [DOI: 10.1016/j.autneu.2015.06.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2015] [Revised: 05/21/2015] [Accepted: 06/17/2015] [Indexed: 01/11/2023]
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16
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Tolstanova G, Deng X, Ahluwalia A, Paunovic B, Prysiazhniuk A, Ostapchenko L, Tarnawski A, Sandor Z, Szabo S. Role of Dopamine and D2 Dopamine Receptor in the Pathogenesis of Inflammatory Bowel Disease. Dig Dis Sci 2015; 60:2963-75. [PMID: 25972152 DOI: 10.1007/s10620-015-3698-5] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Accepted: 04/29/2015] [Indexed: 02/06/2023]
Abstract
BACKGROUND VEGF-induced vascular permeability and blood vessels remodeling are key features of inflammatory bowel disease (IBD) pathogenesis. Dopamine through D2 receptor (D2R) inhibits VEGF/VPF-mediated vascular permeability and angiogenesis in tumor models. In this study, we tested the hypothesis that pathogenesis of IBD is characterized by the disturbance of dopaminergic system and D2R activity. METHODS IL-10 knockout (KO) mice and rats with iodoacetamide-induced ulcerative colitis (UC) were treated intragastrically with D2R agonists quinpirole (1 mg/100 g) or cabergoline (1 or 5 µg/100 g). Macroscopic, histologic, and clinical features of IBD, colonic vascular permeability, and angiogenesis were examined. RESULTS Although colonic D2R protein increased, levels of tyrosine hydroxylase and dopamine transporter DAT decreased in both models of IBD. Treatment with quinpirole decreased the size of colonic lesions in rats with iodoacetamide-induced UC (p < 0.01) and reduced colon wet weight in IL-10 KO mice (p < 0.05). Quinpirole decreased colonic vascular permeability (p < 0.001) via downregulation of c-Src and Akt phosphorylation. Cabergoline (5 µg/100 g) reduced vascular permeability but did not affect angiogenesis and improved signs of iodoacetamide-induced UC in rats (p < 0.05). CONCLUSIONS Treatment with D2R agonists decreased the severity of UC in two animal models, in part, by attenuation of enhanced vascular permeability and prevention of excessive vascular leakage. Hence, the impairment dopaminergic system seems to be a feature of IBD pathogenesis.
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MESH Headings
- Animals
- Biopsy, Needle
- Blotting, Western
- Cabergoline
- Capillary Permeability/drug effects
- Colitis, Ulcerative/chemically induced
- Colitis, Ulcerative/drug therapy
- Colitis, Ulcerative/pathology
- Disease Models, Animal
- Dopamine/metabolism
- Ergolines/pharmacology
- Female
- Humans
- Immunohistochemistry
- Inflammation Mediators/metabolism
- Inflammatory Bowel Diseases/chemically induced
- Inflammatory Bowel Diseases/drug therapy
- Inflammatory Bowel Diseases/pathology
- Interleukin-10/metabolism
- Iodoacetamide/pharmacology
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Quinpirole/pharmacology
- Random Allocation
- Rats
- Rats, Sprague-Dawley
- Receptors, Dopamine D2/metabolism
- Statistics, Nonparametric
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Affiliation(s)
- Ganna Tolstanova
- VA Long Beach Healthcare System, Departments of Medicine, Pathology and Pharmacology, VA Medical Center (05/113), University of California-Irvine, 5901 East 7th Street, Long Beach, CA, 90822, USA.
- Educational-Scientific Center "Institute of Biology", Taras Shevchenko National University of Kyiv, Kiev, Ukraine.
| | - Xiaoming Deng
- VA Long Beach Healthcare System, Departments of Medicine, Pathology and Pharmacology, VA Medical Center (05/113), University of California-Irvine, 5901 East 7th Street, Long Beach, CA, 90822, USA
| | - Amrita Ahluwalia
- VA Long Beach Healthcare System, Departments of Medicine, Pathology and Pharmacology, VA Medical Center (05/113), University of California-Irvine, 5901 East 7th Street, Long Beach, CA, 90822, USA
| | - Brankica Paunovic
- VA Long Beach Healthcare System, Departments of Medicine, Pathology and Pharmacology, VA Medical Center (05/113), University of California-Irvine, 5901 East 7th Street, Long Beach, CA, 90822, USA
| | - Alona Prysiazhniuk
- Educational-Scientific Center "Institute of Biology", Taras Shevchenko National University of Kyiv, Kiev, Ukraine
| | - Lyudmyla Ostapchenko
- Educational-Scientific Center "Institute of Biology", Taras Shevchenko National University of Kyiv, Kiev, Ukraine
| | - Andrzej Tarnawski
- VA Long Beach Healthcare System, Departments of Medicine, Pathology and Pharmacology, VA Medical Center (05/113), University of California-Irvine, 5901 East 7th Street, Long Beach, CA, 90822, USA
| | - Zsuzsanna Sandor
- VA Long Beach Healthcare System, Departments of Medicine, Pathology and Pharmacology, VA Medical Center (05/113), University of California-Irvine, 5901 East 7th Street, Long Beach, CA, 90822, USA
| | - Sandor Szabo
- VA Long Beach Healthcare System, Departments of Medicine, Pathology and Pharmacology, VA Medical Center (05/113), University of California-Irvine, 5901 East 7th Street, Long Beach, CA, 90822, USA.
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17
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Feng L, Li W, Liu Y, Jiang WD, Kuang SY, Jiang J, Tang L, Wu P, Tang WN, Zhang YA, Zhou XQ. Dietary phenylalanine-improved intestinal barrier health in young grass carp (Ctenopharyngodon idella) is associated with increased immune status and regulated gene expression of cytokines, tight junction proteins, antioxidant enzymes and related signalling molecules. FISH & SHELLFISH IMMUNOLOGY 2015; 45:495-509. [PMID: 25979603 DOI: 10.1016/j.fsi.2015.05.001] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2014] [Revised: 05/03/2015] [Accepted: 05/04/2015] [Indexed: 05/12/2023]
Abstract
The present work evaluated the effects of dietary phenylalanine (Phe) on the intestinal immune response, tight junction proteins transcript abundance, and the gene expression of immune- and antioxidant-related signalling molecules in the intestine. In addition, the dietary Phe (and Phe + Tyr) requirement of young grass carp (Ctenopharyngodon idella) was also estimated. Fish were fed fish meal-casein-gelatin based diets (302.3 g crude protein kg(-1)) containing 3.4 (basal diet), 6.1, 9.1, 11.5, 14.0 and 16.8 g Phe kg(-1) with a fixed amount of 10.7 g tyrosine kg(-1) for 8 weeks. The results showed that Phe deficiency or excess Phe reduced the lysozyme and acid phosphatase activities and complement C 3 content in the intestine (P < 0.05). Moreover, zonula occludens-1 (ZO-1), occludin and claudin c mRNA levels were highest in the fish fed the diet containing 11.5 g Phe kg(-1) (P < 0.05). However, claudin 12 and claudin b mRNA levels were not significantly affected by dietary Phe (P > 0.05). Gene expression of interleukin-10 (IL-10), transforming growth factor-β1 (TGF-β1), target of rapamycin (TOR) and inhibitor of nuclear factor κBα (IκBα) in proximal intestine (PI), mid intestine (MI) and distal intestine (DI) increased as dietary Phe increased up to 6.1, 9.1, 11.5 and 14.0 g kg(-1), respectively (P < 0.05). However, interleukin-8 (IL-8), tumour necrosis factor-α (TNF-α) and nuclear factor-κB p65 (NF-κB p65) mRNA levels showed opposite tendencies. In addition, the mRNA level of superoxide dismutase (SOD) was significantly lower in the intestinal tissue of the group fed a diet with Phe levels of 16.8 g kg(-1) than in those of other groups (P < 0.05). The expression of NF-E2-related factor 2 (Nrf2) gene was increased as dietary Phe increased up to 9.1 g kg(-1) (P < 0.05). In conclusion, Phe improved intestinal immune status, and regulated gene expression of cytokines, tight junction proteins, antioxidant enzymes, NF-κB p65, IκBα, TOR, and Nrf2 in the fish intestine. Based on the quadratic regression analysis of lysozyme activity at a 95% maximum, the dietary Phe requirement of young grass carp (256-629 g) was estimated to be 8.31 g kg(-1), corresponding to 2.75 g 100 g(-1) protein.
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Affiliation(s)
- Lin Feng
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China
| | - Wen Li
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China
| | - Yang Liu
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China
| | - Wei-Dan Jiang
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China
| | - Sheng-Yao Kuang
- Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu, 610066, China
| | - Jun Jiang
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China
| | - Ling Tang
- Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu, 610066, China
| | - Pei Wu
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China
| | - Wu-Neng Tang
- Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu, 610066, China
| | - Yong-An Zhang
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Xiao-Qiu Zhou
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China.
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Cytokine-mediated dysregulation of zonula occludens-1 properties in human brain microvascular endothelium. Microvasc Res 2015; 100:48-53. [DOI: 10.1016/j.mvr.2015.04.010] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Revised: 04/29/2015] [Accepted: 04/29/2015] [Indexed: 11/21/2022]
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19
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Fan J, Zhang W, Lei C, Qiao B, Liu Q, Chen Q, Jiao H, Jiang L, Cui S, Chen J. Vascular endothelial growth factor polymorphisms and lung cancer risk. Int J Clin Exp Med 2015; 8:6406-6411. [PMID: 26131266 PMCID: PMC4483952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Accepted: 11/19/2014] [Indexed: 06/04/2023]
Abstract
The VEGF polymorphisms has been implicated in the susceptibility to lung cancer, but the results are not conclusive. The aim of this study is to investigate the association between the VEGF polymorphisms and the risk of lung cancer by meta-analysis. We searched PubMed, Embase, CNKI and Wanfang databases. A total of 7 case-control studies were included in this meta-analysis. We found that VEGF rs833061 polymorphism showed no significant association with lung cancer risk. Subgroup analysis on race suggested that CC genotype was significantly associated with lung cancer risk in Asian population. We found that VEGF rs699947 polymorphism showed significant association with lung cancer risk. Subgroup analysis on race showed that VEGF rs699947 polymorphism increased lung cancer risk in Asians. In conclusion, this meta-analysis suggested that the VEGF rs699947 is associated with increased risk of lung cancer.
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Affiliation(s)
- Junli Fan
- Department of Oncology Surgery, The First Affiliated Hospital of Henan University of Science and TechnologyLuoyang 471003, Henan, China
| | - Weiguo Zhang
- Department of Oncology Surgery, The First Affiliated Hospital of Henan University of Science and TechnologyLuoyang 471003, Henan, China
| | - Caipeng Lei
- Department of Oncology Surgery, The First Affiliated Hospital of Henan University of Science and TechnologyLuoyang 471003, Henan, China
| | - Bin Qiao
- Department of Oncology Surgery, The First Affiliated Hospital of Henan University of Science and TechnologyLuoyang 471003, Henan, China
| | - Qin Liu
- Department of Oncology Surgery, The First Affiliated Hospital of Henan University of Science and TechnologyLuoyang 471003, Henan, China
| | - Qiang Chen
- Department of Oncology Surgery, The First Affiliated Hospital of Henan University of Science and TechnologyLuoyang 471003, Henan, China
| | - Hongduo Jiao
- Department of Oncology Surgery, The First Affiliated Hospital of Henan University of Science and TechnologyLuoyang 471003, Henan, China
| | - Leizhen Jiang
- Department of Neurosurgery, The First Affiliated Hospital of Henan University of Science and TechnologyLuoyang 471003, Henan, China
| | - Shuo Cui
- Microsurgical Ward Section, The First Affiliated Hospital of Henan University of Science and TechnologyLuoyang 471003, Henan, China
| | - Jianmin Chen
- Department of Oncology Surgery, The First Affiliated Hospital of Henan University of Science and TechnologyLuoyang 471003, Henan, China
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20
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Reinitz A, DeStefano J, Ye M, Wong AD, Searson PC. Human brain microvascular endothelial cells resist elongation due to shear stress. Microvasc Res 2015; 99:8-18. [PMID: 25725258 DOI: 10.1016/j.mvr.2015.02.008] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Revised: 02/11/2015] [Accepted: 02/12/2015] [Indexed: 02/02/2023]
Abstract
Endothelial cells in straight sections of vessels are known to elongate and align in the direction of flow. This phenotype has been replicated in confluent monolayers of bovine aortic endothelial cells and human umbilical vein endothelial cells (HUVECs) in cell culture under physiological shear stress. Here we report on the morphological response of human brain microvascular endothelial cells (HBMECs) in confluent monolayers in response to shear stress. Using a microfluidic platform we image confluent monolayers of HBMECs and HUVECs under shear stresses up to 16 dyne cm(-2). From live-cell imaging we quantitatively analyze the cell morphology and cell speed as a function of time. We show that HBMECs do not undergo a classical transition from cobblestone to spindle-like morphology in response to shear stress. We further show that under shear stress, actin fibers are randomly oriented in the cells indicating that there is no cytoskeletal remodeling. These results suggest that HBMECs are programmed to resist elongation and alignment under shear stress, a phenotype that may be associated with the unique properties of the blood-brain barrier.
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Affiliation(s)
- Adam Reinitz
- Department of Materials Science and Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA; Institute for Nanobiotechnology, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA
| | - Jackson DeStefano
- Department of Materials Science and Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA; Institute for Nanobiotechnology, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA
| | - Mao Ye
- Department of Materials Science and Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA; Institute for Nanobiotechnology, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA
| | - Andrew D Wong
- Department of Materials Science and Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA; Institute for Nanobiotechnology, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA
| | - Peter C Searson
- Department of Materials Science and Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA; Institute for Nanobiotechnology, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA.
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21
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Mehta D, Ravindran K, Kuebler WM. Novel regulators of endothelial barrier function. Am J Physiol Lung Cell Mol Physiol 2014; 307:L924-35. [PMID: 25381026 PMCID: PMC4269690 DOI: 10.1152/ajplung.00318.2014] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Accepted: 11/05/2014] [Indexed: 12/15/2022] Open
Abstract
Endothelial barrier function is an essential and tightly regulated process that ensures proper compartmentalization of the vascular and interstitial space, while allowing for the diffusive exchange of small molecules and the controlled trafficking of macromolecules and immune cells. Failure to control endothelial barrier integrity results in excessive leakage of fluid and proteins from the vasculature that can rapidly become fatal in scenarios such as sepsis or the acute respiratory distress syndrome. Here, we highlight recent advances in our understanding on the regulation of endothelial permeability, with a specific focus on the endothelial glycocalyx and endothelial scaffolds, regulatory intracellular signaling cascades, as well as triggers and mediators that either disrupt or enhance endothelial barrier integrity, and provide our perspective as to areas of seeming controversy and knowledge gaps, respectively.
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Affiliation(s)
- Dolly Mehta
- Department of Pharmacology and Center for Lung and Vascular Biology, College of Medicine, University of Illinois at Chicago, Chicago, Illinois;
| | - Krishnan Ravindran
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, Ontario, Canada
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22
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Peters MAM, Walenkamp AME, Kema IP, Meijer C, de Vries EGE, Oosting SF. Dopamine and serotonin regulate tumor behavior by affecting angiogenesis. Drug Resist Updat 2014; 17:96-104. [PMID: 25269824 DOI: 10.1016/j.drup.2014.09.001] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The biogenic amines dopamine and serotonin are neurotransmitters and hormones, which are mainly produced in the central nervous system and in the gastro-intestinal tract. They execute local and systemic functions such as intestinal motility and tissue repair. Dopamine and serotonin are primarily stored in and transported by platelets. This review focuses on the recently recognized role of dopamine and serotonin in the regulation of tumor behavior by affecting angiogenesis and tumor cell proliferation. Preclinical studies demonstrate that dopamine inhibits tumor growth via activation of dopamine receptor D2 on endothelial and tumor cells. Serotonin stimulates tumor growth via activation of serotonin receptor 2B on endothelial cells and serotonin receptors on tumor cells. Drugs that stimulate dopamine receptor D2 or inhibit serotonin receptors are available and therefore clinical intervention studies for cancer patients are within reach.
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Affiliation(s)
- Marloes A M Peters
- Department of Medical Oncology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Annemiek M E Walenkamp
- Department of Medical Oncology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Ido P Kema
- Department of Laboratory Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Coby Meijer
- Department of Medical Oncology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Elisabeth G E de Vries
- Department of Medical Oncology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Sjoukje F Oosting
- Department of Medical Oncology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
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23
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Dopamine D2 receptor agonists inhibit lung cancer progression by reducing angiogenesis and tumor infiltrating myeloid derived suppressor cells. Mol Oncol 2014; 9:270-81. [PMID: 25226814 DOI: 10.1016/j.molonc.2014.08.008] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Revised: 08/18/2014] [Accepted: 08/20/2014] [Indexed: 01/11/2023] Open
Abstract
We sought to determine whether Dopamine D2 Receptor (D2R) agonists inhibit lung tumor progression and identify subpopulations of lung cancer patients that benefit most from D2R agonist therapy. We demonstrate D2R agonists abrogate lung tumor progression in syngeneic (LLC1) and human xenograft (A549) orthotopic murine models through inhibition of tumor angiogenesis and reduction of tumor infiltrating myeloid derived suppressor cells. Pathological examination of human lung cancer tissue revealed a positive correlation between endothelial D2R expression and tumor stage. Lung cancer patients with a smoking history exhibited greater levels of D2R in lung endothelium. Our results suggest D2R agonists may represent a promising individualized therapy for lung cancer patients with high levels of endothelial D2R expression and a smoking history.
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24
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Habibi I, Sfar I, Chebil A, Kort F, Bouraoui R, Jendoubi-Ayed S, Makhlouf M, Abdallah TB, El Matri L, Gorgi Y. Vascular endothelial growth factor genetic polymorphisms and susceptibility to age-related macular degeneration in Tunisian population. Biomark Res 2014; 2:15. [PMID: 25165559 PMCID: PMC4145361 DOI: 10.1186/2050-7771-2-15] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Accepted: 08/07/2014] [Indexed: 11/10/2022] Open
Abstract
PURPOSE Three VEGF SNPs (-2578) C/A, (+405) G/C and (+936) C/T were investigated in Tunisian exudative AMD patients in order to determine their association with the disease susceptibility and their influence to intravitreal bevacizumab therapy response. METHODS 145 AMD patients and 207 age-matched controls were included. 68 patients were treated with intravitreal bevacizumab. SNPs genotyping were performed using direct sequencing. The serum VEGF was assayed by ELISA (R&D). RESULTS The (+405) CC and (+936) TT genotypes were higher in AMD patients than in controls (p = 5 × 10(-6) and p = 0.021, respectively). The mean plasma levels of VEGF were statistically higher in AMD patients (84.22 pg/ml) than in controls (15 pg/ml). Three months after bevacizumab treatment, 52 patients (85.6%) were classified as good responders (GR) and 16 (14.4%) as poor responders (PR). The mean plasmatic-VEGF levels in GR patients was higher (86.61 ± 80.30 pg/ml) than in PR patients (47.12 ± 45.74 pg/ml) (p = 0.086). The patients with genotype homozygous TT (+936) would be PR compared to those carrying CT and CC genotypes. Whereas, those with AA (-2578) genotype would be GR compared with others genotypes (p = 0.014; p = 0.042 respectively). CONCLUSIONS Our results show that VEGF genetic variants may contribute to the susceptibility to neovascular AMD in Tunisian patients.
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Affiliation(s)
- Imen Habibi
- Research Laboratory of renal Transplantation and Immunopathology (LR03SP01), University Tunis El Manar, Immunology Laboratory, Charles Nicolle Hospital, Charles Nicolle Hospital, Bd 9 Avril, Tunis 1006, Tunisia ; Oculogenetic Research Unit, Department B of Ophtalmology, Hedi Rais Institute of Ophthalmology, Tunis, Tunisia
| | - Imen Sfar
- Research Laboratory of renal Transplantation and Immunopathology (LR03SP01), University Tunis El Manar, Immunology Laboratory, Charles Nicolle Hospital, Charles Nicolle Hospital, Bd 9 Avril, Tunis 1006, Tunisia
| | - Ahmed Chebil
- Oculogenetic Research Unit, Department B of Ophtalmology, Hedi Rais Institute of Ophthalmology, Tunis, Tunisia
| | - Fedra Kort
- Oculogenetic Research Unit, Department B of Ophtalmology, Hedi Rais Institute of Ophthalmology, Tunis, Tunisia
| | - Rim Bouraoui
- Oculogenetic Research Unit, Department B of Ophtalmology, Hedi Rais Institute of Ophthalmology, Tunis, Tunisia
| | - Salwa Jendoubi-Ayed
- Research Laboratory of renal Transplantation and Immunopathology (LR03SP01), University Tunis El Manar, Immunology Laboratory, Charles Nicolle Hospital, Charles Nicolle Hospital, Bd 9 Avril, Tunis 1006, Tunisia
| | - Mouna Makhlouf
- Research Laboratory of renal Transplantation and Immunopathology (LR03SP01), University Tunis El Manar, Immunology Laboratory, Charles Nicolle Hospital, Charles Nicolle Hospital, Bd 9 Avril, Tunis 1006, Tunisia
| | - Taïeb Ben Abdallah
- Research Laboratory of renal Transplantation and Immunopathology (LR03SP01), University Tunis El Manar, Immunology Laboratory, Charles Nicolle Hospital, Charles Nicolle Hospital, Bd 9 Avril, Tunis 1006, Tunisia
| | - Leila El Matri
- Oculogenetic Research Unit, Department B of Ophtalmology, Hedi Rais Institute of Ophthalmology, Tunis, Tunisia
| | - Yousr Gorgi
- Research Laboratory of renal Transplantation and Immunopathology (LR03SP01), University Tunis El Manar, Immunology Laboratory, Charles Nicolle Hospital, Charles Nicolle Hospital, Bd 9 Avril, Tunis 1006, Tunisia
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25
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Lin ST, Chen CC, Tsang HY, Lee CS, Yang P, Cheng KD, Li DJ, Wang CJ, Hsieh YC, Yang WC. Association Between Antipsychotic Use and Risk of Acute Myocardial Infarction. Circulation 2014; 130:235-43. [DOI: 10.1161/circulationaha.114.008779] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Background—
Antipsychotic medications have been increasingly and more widely prescribed despite continued uncertainty about their association with the incidence of acute myocardial infarction (AMI).
Methods and Results—
We investigated the risk of AMI associated with antipsychotic treatment in 56 910 patients with schizophrenia, mood disorders, or dementia first hospitalized or visiting an emergency room for AMI in 1999 to 2009. A case-crossover design was used to compare the distributions of antipsychotic exposure for the same patient across 1 to 30 and 91 to 120 days just before the AMI event. Adjustments were made for comedications and outpatient visits. The adjusted odds ratio of AMI risk was 2.52 (95% confidence interval, 2.37–2.68) for any antipsychotics, 2.32 (95% confidence interval, 2.17–2.47) for first-generation antipsychotics, and 2.74 (95% confidence interval, 2.49–3.02) for second-generation antipsychotics. The risk significantly increased (
P
<0.001) with elevations in dosage and in short-term use (≤30 days). Male patients, elderly patients, and patients with dementia were at significantly increased risk (all
P
<0.001). Physically healthier patients with no preexisting diabetes mellitus, hypertension, or dyslipidemia were at significantly greater risk (
P
<0.001), largely because they had been exposed to higher doses of antipsychotics (
P
<0.001). A study of the selected binding of antipsychotics to 14 neurotransmitter receptors revealed only dopamine type 3 receptor antagonism to be significantly associated with AMI risk (adjusted odds ratio, 2.59; 95% confidence interval, 2.43–2.75;
P
<0.0001).
Conclusions—
Antipsychotic use may be associated with a transient increase in risk for AMI, possibly mediated by dopamine type 3 receptor blockades. Further education on drug safety and research into the underlying biological mechanisms are needed.
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Affiliation(s)
- Shuai-Ting Lin
- From the Department of Psychiatry, Kaohsiung Kai-Syuan Psychiatric Hospital, Kaohsiung, Taiwan (S.-T.L., C.-C.C., H.-Y.T., K.-D.C., D.-J.L., C.-J.W., Y.-C.H., W.-C.Y.); Graduate Institute of Medicine, College of Medicine (S.-T.L., P.Y.) and Department of Psychiatry, Faculty of Medicine (P.Y.), College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; and Division of Cardiology, Department of Internal Medicine (C.-S.L.) and Department of Psychiatry (P.Y.), Kaohsiung Medical University and
| | - Cheng-Chung Chen
- From the Department of Psychiatry, Kaohsiung Kai-Syuan Psychiatric Hospital, Kaohsiung, Taiwan (S.-T.L., C.-C.C., H.-Y.T., K.-D.C., D.-J.L., C.-J.W., Y.-C.H., W.-C.Y.); Graduate Institute of Medicine, College of Medicine (S.-T.L., P.Y.) and Department of Psychiatry, Faculty of Medicine (P.Y.), College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; and Division of Cardiology, Department of Internal Medicine (C.-S.L.) and Department of Psychiatry (P.Y.), Kaohsiung Medical University and
| | - Hin-Yeung Tsang
- From the Department of Psychiatry, Kaohsiung Kai-Syuan Psychiatric Hospital, Kaohsiung, Taiwan (S.-T.L., C.-C.C., H.-Y.T., K.-D.C., D.-J.L., C.-J.W., Y.-C.H., W.-C.Y.); Graduate Institute of Medicine, College of Medicine (S.-T.L., P.Y.) and Department of Psychiatry, Faculty of Medicine (P.Y.), College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; and Division of Cardiology, Department of Internal Medicine (C.-S.L.) and Department of Psychiatry (P.Y.), Kaohsiung Medical University and
| | - Chee-Siong Lee
- From the Department of Psychiatry, Kaohsiung Kai-Syuan Psychiatric Hospital, Kaohsiung, Taiwan (S.-T.L., C.-C.C., H.-Y.T., K.-D.C., D.-J.L., C.-J.W., Y.-C.H., W.-C.Y.); Graduate Institute of Medicine, College of Medicine (S.-T.L., P.Y.) and Department of Psychiatry, Faculty of Medicine (P.Y.), College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; and Division of Cardiology, Department of Internal Medicine (C.-S.L.) and Department of Psychiatry (P.Y.), Kaohsiung Medical University and
| | - Pinchen Yang
- From the Department of Psychiatry, Kaohsiung Kai-Syuan Psychiatric Hospital, Kaohsiung, Taiwan (S.-T.L., C.-C.C., H.-Y.T., K.-D.C., D.-J.L., C.-J.W., Y.-C.H., W.-C.Y.); Graduate Institute of Medicine, College of Medicine (S.-T.L., P.Y.) and Department of Psychiatry, Faculty of Medicine (P.Y.), College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; and Division of Cardiology, Department of Internal Medicine (C.-S.L.) and Department of Psychiatry (P.Y.), Kaohsiung Medical University and
| | - Kai-Da Cheng
- From the Department of Psychiatry, Kaohsiung Kai-Syuan Psychiatric Hospital, Kaohsiung, Taiwan (S.-T.L., C.-C.C., H.-Y.T., K.-D.C., D.-J.L., C.-J.W., Y.-C.H., W.-C.Y.); Graduate Institute of Medicine, College of Medicine (S.-T.L., P.Y.) and Department of Psychiatry, Faculty of Medicine (P.Y.), College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; and Division of Cardiology, Department of Internal Medicine (C.-S.L.) and Department of Psychiatry (P.Y.), Kaohsiung Medical University and
| | - Dian-Jeng Li
- From the Department of Psychiatry, Kaohsiung Kai-Syuan Psychiatric Hospital, Kaohsiung, Taiwan (S.-T.L., C.-C.C., H.-Y.T., K.-D.C., D.-J.L., C.-J.W., Y.-C.H., W.-C.Y.); Graduate Institute of Medicine, College of Medicine (S.-T.L., P.Y.) and Department of Psychiatry, Faculty of Medicine (P.Y.), College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; and Division of Cardiology, Department of Internal Medicine (C.-S.L.) and Department of Psychiatry (P.Y.), Kaohsiung Medical University and
| | - Chin-Jen Wang
- From the Department of Psychiatry, Kaohsiung Kai-Syuan Psychiatric Hospital, Kaohsiung, Taiwan (S.-T.L., C.-C.C., H.-Y.T., K.-D.C., D.-J.L., C.-J.W., Y.-C.H., W.-C.Y.); Graduate Institute of Medicine, College of Medicine (S.-T.L., P.Y.) and Department of Psychiatry, Faculty of Medicine (P.Y.), College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; and Division of Cardiology, Department of Internal Medicine (C.-S.L.) and Department of Psychiatry (P.Y.), Kaohsiung Medical University and
| | - Yung-Chi Hsieh
- From the Department of Psychiatry, Kaohsiung Kai-Syuan Psychiatric Hospital, Kaohsiung, Taiwan (S.-T.L., C.-C.C., H.-Y.T., K.-D.C., D.-J.L., C.-J.W., Y.-C.H., W.-C.Y.); Graduate Institute of Medicine, College of Medicine (S.-T.L., P.Y.) and Department of Psychiatry, Faculty of Medicine (P.Y.), College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; and Division of Cardiology, Department of Internal Medicine (C.-S.L.) and Department of Psychiatry (P.Y.), Kaohsiung Medical University and
| | - Wei-Cheng Yang
- From the Department of Psychiatry, Kaohsiung Kai-Syuan Psychiatric Hospital, Kaohsiung, Taiwan (S.-T.L., C.-C.C., H.-Y.T., K.-D.C., D.-J.L., C.-J.W., Y.-C.H., W.-C.Y.); Graduate Institute of Medicine, College of Medicine (S.-T.L., P.Y.) and Department of Psychiatry, Faculty of Medicine (P.Y.), College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; and Division of Cardiology, Department of Internal Medicine (C.-S.L.) and Department of Psychiatry (P.Y.), Kaohsiung Medical University and
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Amiya E, Watanabe M, Komuro I. The Relationship between Vascular Function and the Autonomic Nervous System. Ann Vasc Dis 2014; 7:109-19. [PMID: 24995054 PMCID: PMC4072858 DOI: 10.3400/avd.ra.14-00048] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Accepted: 04/22/2014] [Indexed: 12/23/2022] Open
Abstract
Endothelial dysfunction and autonomic nervous system dysfunction are both risk factors for atherosclerosis. There is evidence demonstrating that there is a close interrelationship between these two systems. In hypertension, endothelial dysfunction affects the pathologic process through autonomic nervous pathways, and the pathophysiological process of autonomic neuropathy in diabetes mellitus is closely related with vascular function. However, detailed mechanisms of this interrelationship have not been clearly explained. In this review, we summarize findings concerning the interrelationship between vascular function and the autonomic nervous system from both experimental and clinical studies. The clarification of this interrelationship may provide more comprehensive risk stratification and a new effective therapeutic strategy against atherosclerosis.
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Affiliation(s)
- Eisuke Amiya
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Masafumi Watanabe
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Issei Komuro
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
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Ong SP, Ng ML, Chu JJH. Differential regulation of angiopoietin 1 and angiopoietin 2 during dengue virus infection of human umbilical vein endothelial cells: implications for endothelial hyperpermeability. Med Microbiol Immunol 2013; 202:437-52. [DOI: 10.1007/s00430-013-0310-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2013] [Accepted: 08/19/2013] [Indexed: 12/17/2022]
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Lu K, Chakroborty D, Sarkar C, Lu T, Xie Z, Liu Z, Basu S. Triphala and its active constituent chebulinic acid are natural inhibitors of vascular endothelial growth factor-a mediated angiogenesis. PLoS One 2012; 7:e43934. [PMID: 22937129 PMCID: PMC3427174 DOI: 10.1371/journal.pone.0043934] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2012] [Accepted: 07/27/2012] [Indexed: 02/07/2023] Open
Abstract
Triphala churna (THL) is a combination of three fruits that has been used for many years in India for the treatment of various diseases. There are now reports which indicate that THL can inhibit growth of malignant tumors in animals. However, the mechanisms by which THL mediates its anti-tumor actions are still being explored. Because vascular endothelial growth factor-A (VEGF) induced angiogenesis plays a critical role in the pathogenesis of cancer, we therefore investigated whether tumor inhibitory effects of THL or its active constituents are through suppression of VEGF actions. We herein report that THL and chebulinic (CI) present in THL can significantly and specifically inhibit VEGF induced angiogenesis by suppressing VEGF receptor-2 (VEGFR-2) phosphorylation. These results are of clinical significance as these inexpensive and non-toxic natural products can be used for the prevention and treatment of diseases where VEGF induced angiogenesis has an important role.
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Affiliation(s)
- Kai Lu
- Department of Pathology, Ohio State University, Columbus, Ohio, United States of America
| | - Debanjan Chakroborty
- Department of Pathology, Ohio State University, Columbus, Ohio, United States of America
| | - Chandrani Sarkar
- Department of Pathology, Ohio State University, Columbus, Ohio, United States of America
| | - Tingting Lu
- Department of Pathology, Ohio State University, Columbus, Ohio, United States of America
| | - Zhiliang Xie
- Division of Pharmaceutics, College of Pharmacy, Ohio State University, Columbus, Ohio, United States of America
| | - Zhongfa Liu
- Division of Pharmaceutics, College of Pharmacy, Ohio State University, Columbus, Ohio, United States of America
- Arthur G. James Comprehensive Cancer Center, Ohio State University, Columbus, Ohio, United States of America
| | - Sujit Basu
- Department of Pathology, Ohio State University, Columbus, Ohio, United States of America
- Arthur G. James Comprehensive Cancer Center, Ohio State University, Columbus, Ohio, United States of America
- Dorthy M. Davis Heart and Lung Research Institute, Ohio State University, Columbus, Ohio, United States of America
- * E-mail:
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Vohra PK, Hoeppner LH, Sagar G, Dutta SK, Misra S, Hubmayr RD, Mukhopadhyay D. Dopamine inhibits pulmonary edema through the VEGF-VEGFR2 axis in a murine model of acute lung injury. Am J Physiol Lung Cell Mol Physiol 2011; 302:L185-92. [PMID: 22003095 DOI: 10.1152/ajplung.00274.2010] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
The neurotransmitter dopamine and its dopamine receptor D2 (D2DR) agonists are known to inhibit vascular permeability factor/vascular endothelial growth factor (VEGF)-mediated angiogenesis and vascular permeability. Lung injury is a clinical syndrome associated with increased microvascular permeability. However, the effects of dopamine on pulmonary edema, a phenomenon critical to the pathophysiology of both acute and chronic lung injuries, have yet to be established. Therefore, we sought to determine the potential therapeutic effects of dopamine in a murine model of lipopolysaccharide (LPS)-induced acute lung injury (ALI). Compared with sham-treated controls, pretreatment with dopamine (50 mg/kg body wt) ameliorated LPS-mediated edema formation and lowered myeloperoxidase activity, a measure of neutrophil infiltration. Moreover, dopamine significantly increased survival rates of LPS-treated mice, from 0-75%. Mechanistically, we found that dopamine acts through the VEGF-VEGFR2 axis to reduce pulmonary edema, as dopamine pretreatment in LPS-treated mice resulted in decreased serum VEGF, VEGFR2 phosphorylation, and endothelial nitric oxide synthase phosphorylation. We used D2DR knockout mice to confirm that dopamine acts through D2DR to block vascular permeability in our lung injury model. As expected, a D2DR agonist failed to reduce pulmonary edema in D2DR(-/-) mice. Taken together, our results suggest that dopamine acts through D2DR to inhibit pulmonary edema-associated vascular permeability, which is mediated through VEGF-VEGFR2 signaling and conveys protective effects in an ALI model.
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Affiliation(s)
- Pawan K Vohra
- Dept. of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, Guggenheim 1334, 200 First St. S.W., Rochester, MN 55905, USA
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Moreno-Smith M, Lu C, Shahzad MMK, Pena GNA, Allen JK, Stone RL, Mangala LS, Han HD, Kim HS, Farley D, Berestein GL, Cole SW, Lutgendorf SK, Sood AK. Dopamine blocks stress-mediated ovarian carcinoma growth. Clin Cancer Res 2011; 17:3649-59. [PMID: 21531818 DOI: 10.1158/1078-0432.ccr-10-2441] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
PURPOSE Increased adrenergic activity in response to chronic stress is known to promote tumor growth by stimulating the tumor microenvironment. The focus of the current study was to determine whether dopamine, an inhibitory catecholamine, could block the effects of chronic stress on tumor growth. EXPERIMENTAL DESIGN Expression of dopamine receptors (DR1-DR5) was analyzed by reverse transcriptase-PCR and by Western blotting. In vitro effects of dopamine on cell viability, apoptosis, and migration were examined. For in vivo therapy, murine and human DR2-siRNAs were incorporated into chitosan nanoparticles (CH-NP). RESULTS In this model of chronic stress, tumoral norepinephrine levels remained elevated whereas dopamine levels were significantly decreased compared with nonstressed animals. Daily restraint stress resulted in significantly increased tumor growth in both immunodeficient (SKOV3ip1 and HeyA8) and immunocompetent (ID8) ovarian cancer models. This increase was completely blocked with daily dopamine treatment. Dopamine treatment also blocked the stress-induced increase in angiogenesis. Endothelial and ovarian cancer cells expressed all dopamine receptors except for the lack of DR3 expression in ovarian cancer cells. DR2 was responsible for the inhibitory effects of dopamine on tumor growth and microvessel density as well as the stimulatory effect on apoptosis, as the DR2 antagonist eticlopride reversed these effects. Dopamine significantly inhibited cell viability and stimulated apoptosis in vitro. Moreover, dopamine reduced cyclic AMP levels and inhibited norepinephrine and vascular permeability factor/VEGF-induced Src kinase activation. CONCLUSIONS Dopamine depletion under chronic stress conditions creates a permissive microenvironment for tumor growth that can be reversed by dopamine replacement.
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Affiliation(s)
- Myrthala Moreno-Smith
- Departments of Gynecologic Oncology, Cancer Biology, and Experimental Therapeutics, and Center for RNA Interference and Non-coding RNA, University of Texas MD Anderson Cancer Center, Houston, Texas, USA
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Martinez-Lopez DG, Fahey M, Coburn J. Responses of human endothelial cells to pathogenic and non-pathogenic Leptospira species. PLoS Negl Trop Dis 2010; 4:e918. [PMID: 21179504 PMCID: PMC3001904 DOI: 10.1371/journal.pntd.0000918] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2010] [Accepted: 11/16/2010] [Indexed: 01/11/2023] Open
Abstract
Leptospirosis is a widespread zoonotic infection that primarily affects residents of tropical regions, but causes infections in animals and humans in temperate regions as well. The agents of leptospirosis comprise several members of the genus Leptospira, which also includes non-pathogenic, saprophytic species. Leptospirosis can vary in severity from a mild, non-specific illness to severe disease that includes multi-organ failure and widespread endothelial damage and hemorrhage. To begin to investigate how pathogenic leptospires affect endothelial cells, we compared the responses of two endothelial cell lines to infection by pathogenic versus non-pathogenic leptospires. Microarray analyses suggested that pathogenic L. interrogans and non-pathogenic L. biflexa triggered changes in expression of genes whose products are involved in cellular architecture and interactions with the matrix, but that the changes were in opposite directions, with infection by L. biflexa primarily predicted to increase or maintain cell layer integrity, while L. interrogans lead primarily to changes predicted to disrupt cell layer integrity. Neither bacterial strain caused necrosis or apoptosis of the cells even after prolonged incubation. The pathogenic L. interrogans, however, did result in significant disruption of endothelial cell layers as assessed by microscopy and the ability of the bacteria to cross the cell layers. This disruption of endothelial layer integrity was abrogated by addition of the endothelial protective drug lisinopril at physiologically relevant concentrations. These results suggest that, through adhesion of L. interrogans to endothelial cells, the bacteria may disrupt endothelial barrier function, promoting dissemination of the bacteria and contributing to severe disease manifestations. In addition, supplementing antibiotic therapy with lisinopril or derivatives with endothelial protective activities may decrease the severity of leptospirosis.
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Affiliation(s)
- Denise G. Martinez-Lopez
- Tufts University School of Medicine, Boston, Massachusetts, United States of America
- Division of Infectious Diseases, Center for Infectious Disease Research, Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America
| | - Mark Fahey
- Division of Infectious Diseases, Center for Infectious Disease Research, Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America
| | - Jenifer Coburn
- Division of Infectious Diseases, Center for Infectious Disease Research, Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America
- * E-mail:
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Sinha S, Vohra PK, Bhattacharya R, Dutta S, Sinha S, Mukhopadhyay D. Dopamine regulates phosphorylation of VEGF receptor 2 by engaging Src-homology-2-domain-containing protein tyrosine phosphatase 2. J Cell Sci 2009; 122:3385-92. [PMID: 19706677 DOI: 10.1242/jcs.053124] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Vascular endothelial growth factor (VEGF)-induced receptor phosphorylation is the crucial step for initiating downstream signaling pathways that lead to angiogenesis or related pathophysiological outcomes. Our previous studies have shown that the neurotransmitter dopamine could inhibit VEGF-induced phosphorylation of VEGF receptor 2 (VEGFR-2), endothelial cell proliferation, migration, microvascular permeability, and thus, angiogenesis. In this study, we address the mechanism by which VEGFR-2 phosphorylation is regulated by dopamine. Here, we demonstrate that D2 dopamine receptor (D2DR) colocalizes with VEGFR-2 at the cell surface. Dopamine pretreatment increases the translocation and colocalization of Src-homology-2-domain-containing protein tyrosine phosphatase (SHP-2) with D2DR at the cell surface. Dopamine administration leads to increased VEGF-induced phosphorylation of SHP-2 and this increased phosphorylation parallels the increased phosphatase activity of SHP-2. Active SHP-2 then dephosphorylates VEGFR-2 at Y951, Y996 and Y1059, but not Y1175. We also observe that SHP-2 knockdown impairs the dopamine-regulated inhibition of VEGF-induced phosphorylation of VEGFR-2 and, subsequently, Src phosphorylation and migration. Our data establish a novel role for SHP-2 phosphatase in the dopamine-mediated regulation of VEGFR-2 phosphorylation.
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Affiliation(s)
- Sutapa Sinha
- Department of Biochemistry and Molecular Biology, College of Medicine, Mayo Clinic, Rochester, MN 55905, USA
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