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Matarage Don NJ, Padmavathi R, Khasro TD, Zaman MRU, Ji HF, Ram JL, Ahn YH. Glutathione-Based Photoaffinity Probe Identifies Caffeine as a Positive Allosteric Modulator of the Calcium-Sensing Receptor. ACS Chem Biol 2024; 19:1661-1670. [PMID: 38975966 PMCID: PMC11267565 DOI: 10.1021/acschembio.4c00335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2024] [Revised: 06/21/2024] [Accepted: 06/28/2024] [Indexed: 07/09/2024]
Abstract
The calcium-sensing receptor (CaSR), abundantly expressed in the parathyroid gland and kidney, plays a central role in calcium homeostasis. In addition, CaSR exerts multimodal roles, including inflammation, muscle contraction, and bone remodeling, in other organs and tissues. The diverse functions of CaSR are mediated by many endogenous and exogenous ligands, including calcium, amino acids, glutathione, cinacalcet, and etelcalcetide, that have distinct binding sites in CaSR. However, strategies to evaluate ligand interactions with CaSR remain limited. Here, we developed a glutathione-based photoaffinity probe, DAZ-G, that analyzes ligand binding to CaSR. We showed that DAZ-G binds to the amino acid binding site in CaSR and acts as a positive allosteric modulator of CaSR. Oxidized and reduced glutathione and phenylalanine effectively compete with DAZ-G conjugation to CaSR, while calcium, cinacalcet, and etelcalcetide have cooperative effects. An unexpected finding was that caffeine effectively competes with DAZ-G's conjugation to CaSR and acts as a positive allosteric modulator of CaSR. The effective concentration of caffeine for CaSR activation (<10 μM) is easily attainable in plasma by ordinary caffeine consumption. Our report demonstrates the utility of a new chemical probe for CaSR and discovers a new protein target of caffeine, suggesting that caffeine consumption can modulate the diverse functions of CaSR.
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Affiliation(s)
| | - Rayavarapu Padmavathi
- Department
of Chemistry, Drexel University, Philadelphia, Pennsylvania 19104, United States
| | - Talan D. Khasro
- Department
of Chemistry, Drexel University, Philadelphia, Pennsylvania 19104, United States
| | - Md. Rumman U. Zaman
- Department
of Chemistry, Drexel University, Philadelphia, Pennsylvania 19104, United States
| | - Hai-Feng Ji
- Department
of Chemistry, Drexel University, Philadelphia, Pennsylvania 19104, United States
| | - Jeffrey L. Ram
- Department
of Physiology, Wayne State University, Detroit, Michigan 48201, United States
| | - Young-Hoon Ahn
- Department
of Chemistry, Drexel University, Philadelphia, Pennsylvania 19104, United States
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Garagarza C, Valente A, Queirós C, Neto IP, Sebastião J, Gomes M, Ferreira A. Hyperparathyroidism, Serum Phosphorus and Dietary Intake in Hemodialysis Patients: Is There a Novel Relationship? Int J Mol Sci 2024; 25:2006. [PMID: 38396685 PMCID: PMC10888856 DOI: 10.3390/ijms25042006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 02/01/2024] [Accepted: 02/05/2024] [Indexed: 02/25/2024] Open
Abstract
The management of hyperparathyroidism (intact parathyroid hormone (iPTH) serum levels > 585 pg/mL), frequently focuses on the appropriate control of mineral and bone markers, with the decrease in serum and dietary phosphorus as two of the targets. We aimed to investigate the association between iPTH, serum phosphorus levels and dietary intake. This was a cross-sectional, multicenter, observational study with 561 patients on hemodialysis treatment. Clinical parameters, body composition and dietary intake were assessed. For the analysis, patients were divided into three groups: (a) iPTH < 130, (b) iPTH between 130 and 585 and (c) iPTH > 585 pg/mL. The association between PTH, serum phosphorus and dietary intake was analyzed using linear regression models. In the whole sample, 23.2% of patients presented an iPTH > 585 pg/mL. Patients with higher iPTH levels were those with longer HD vintage and lower ages, higher serum phosphorus, serum calcium, Ca/P product, albumin and caffeine intake, and a lower dietary intake of phosphorus, fiber, riboflavin and folate. Higher serum phosphorus predicted higher iPTH levels, even in the adjusted model. However, lower dietary phosphorus and fiber intake were predictors of higher iPTH levels, including in the adjusted model. Our results bring new data to the relationship between dietary intake and iPTH values. Despite higher serum phosphorus being observed in patients with HPTH, an opposite association was noted regarding dietary phosphate and fiber.
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Affiliation(s)
- Cristina Garagarza
- Nutrition Department, Nephrocare, 1750 Lisboa, Portugal; (A.V.); (C.Q.); (I.P.N.); (J.S.); (M.G.)
- Laboratório de Nutrição, Faculdade de Medicina, Universidade de Lisboa, 1649 Lisboa, Portugal
| | - Ana Valente
- Nutrition Department, Nephrocare, 1750 Lisboa, Portugal; (A.V.); (C.Q.); (I.P.N.); (J.S.); (M.G.)
| | - Cátia Queirós
- Nutrition Department, Nephrocare, 1750 Lisboa, Portugal; (A.V.); (C.Q.); (I.P.N.); (J.S.); (M.G.)
| | - Inês Pastor Neto
- Nutrition Department, Nephrocare, 1750 Lisboa, Portugal; (A.V.); (C.Q.); (I.P.N.); (J.S.); (M.G.)
| | - Joana Sebastião
- Nutrition Department, Nephrocare, 1750 Lisboa, Portugal; (A.V.); (C.Q.); (I.P.N.); (J.S.); (M.G.)
| | - Melanie Gomes
- Nutrition Department, Nephrocare, 1750 Lisboa, Portugal; (A.V.); (C.Q.); (I.P.N.); (J.S.); (M.G.)
| | - Aníbal Ferreira
- Serviço de Nefrologia, Hospital de Curry Cabral—Centro Hospitalar Universitário de Lisboa Central, 1069 Lisboa, Portugal
- NOVA Medical School, Faculdade de Ciências Médicas, Universidade Nova de Lisboa Centro Clínico Académico de Lisboa, 1169 Lisboa, Portugal
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Szczepkowska A, Bochenek J, Wójcik M, Tomaszewska-Zaremba D, Antushevich H, Tomczyk M, Skipor J, Herman A. Effect of caffeine on adenosine and ryanodine receptor
gene expression in the hypothalamus, pituitary, and choroid
plexus in ewes under basal and LPS challenge conditions. JOURNAL OF ANIMAL AND FEED SCIENCES 2022. [DOI: 10.22358/jafs/156762/2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Ingegnoli F, Cavalli S, Giudice L, Caporali R. Caffeine and rheumatoid arthritis: A complicated relationship. Clin Exp Rheumatol 2022; 21:103117. [PMID: 35595049 DOI: 10.1016/j.autrev.2022.103117] [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: 05/01/2022] [Accepted: 05/15/2022] [Indexed: 11/02/2022]
Abstract
The current ideal goal of rheumatoid arthritis (RA) management is to resolve joint and systemic inflammation by using pharmacological interventions, assuming this will correspondingly lead to overall well-being. Nonetheless, it has emerged that a substantial number of RA patients do not reach optimal disease control. Thus suggesting the holistic management of subjective symptoms might be overlooked. This poses significant medical challenges; hence the proposal of incorporating lifestyle interventions as part of a multidimensional approach. Among these aspects, both patients and physicians perceive the important role of nutrition. This review shall examine how caffeine, one of the most studied bioactive components of the most widely consumed beverages, may potentially interfere with RA management. In particular, the mechanism by which caffeine affects RA pathogenesis, as a trigger for RA onset or flare, including its influence on rheumatic drug metabolism and the most common RA comorbidities and constitutional symptoms are outlined, highlighting important knowledge gaps and unmet research needs.
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Affiliation(s)
- Francesca Ingegnoli
- Clinical Rheumatology Unit, ASST Pini-CTO, Dept. of Clinical Sciences & Community Health, Research Center for Adult and Pediatric Rheumatic Diseases, Università degli Studi di Milano, Milano, Italy.
| | - Silvia Cavalli
- Clinical Rheumatology Unit, ASST Pini-CTO, Dept. of Clinical Sciences & Community Health, Research Center for Adult and Pediatric Rheumatic Diseases, Università degli Studi di Milano, Milano, Italy
| | - Laura Giudice
- Clinical Rheumatology Unit, ASST Pini-CTO, Dept. of Clinical Sciences & Community Health, Research Center for Adult and Pediatric Rheumatic Diseases, Università degli Studi di Milano, Milano, Italy
| | - Roberto Caporali
- Clinical Rheumatology Unit, ASST Pini-CTO, Dept. of Clinical Sciences & Community Health, Research Center for Adult and Pediatric Rheumatic Diseases, Università degli Studi di Milano, Milano, Italy
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de Souza FB, Novaes RD, Santos CFF, de Deus FA, Santos FC, Ladeira LCM, Gonçalves RV, Bastos DSS, Souza ACF, Machado-Neves M, Dos Santos EC. High-fat diet and caffeine interact to modulate bone microstructure and biomechanics in mice. Life Sci 2021; 276:119450. [PMID: 33798548 DOI: 10.1016/j.lfs.2021.119450] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 03/25/2021] [Accepted: 03/27/2021] [Indexed: 10/21/2022]
Abstract
AIMS Although excessive fat and caffeine intake are independent risk factors for bone microstructural and functional disturbances, their association remains overlooked. Thus, we investigated the impact of high-fat diet (HFD) and caffeine alone and combined on serum lipid profile, bone microstructure, micromineral distribution and biomechanical properties. METHODS Forty female C57BL/6 mice were randomized into 4 groups daily treated for seventeen weeks with standard diet (SD) or HFD (cafeteria diet) alone or combined with 50 mg/kg caffeine. KEY FINDINGS The association between HFD and caffeine reduced the weight gain compared to animals receiving HFD alone. Caffeine alone or combined with HFD increases total and HDL cholesterol circulating levels. HFD also reduced calcium, phosphorus and magnesium bone levels compared to the groups receiving SD, and this reduction was aggravated by caffeine coadministration. From biomechanical assays, HFD combined with caffeine increased bending strength and stiffness of tibia, a finding aligned with the marked microstructural remodeling of the cortical and cancellous bone in animals receiving this combination. SIGNIFICANCE Our findings indicated that HFD and caffeine interact to induce metabolic changes and bone microstructural remodeling, which are potentially related to bone biomechanical adaptations in response to HFD and caffeine coadministration.
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Affiliation(s)
- Fernanda Batista de Souza
- Postgraduate Program in Rehabilitation and Functional Performance, Federal University of Jequitinhonha and Mucuri Valleys, Diamantina, Minas Gerais, Brazil
| | - Rômulo Dias Novaes
- Institute of Biomedical Sciences, Department of Structural Biology, Federal University of Alfenas, Minas Gerais, Brazil
| | | | - Franciele Angelo de Deus
- Department of Physiotherapy, Federal University of Jequitinhonha and Mucuri Valleys, Diamantina, Minas Gerais, Brazil
| | - Felipe Couto Santos
- Department of General Biology, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil
| | | | | | | | - Ana Cláudia Ferreira Souza
- Department of Animal Biology, Federal Rural University of Rio de Janeiro, Seropédica, Rio de Janeiro, Brazil
| | - Mariana Machado-Neves
- Department of General Biology, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil
| | - Eliziária Cardoso Dos Santos
- Postgraduate Program in Rehabilitation and Functional Performance, Federal University of Jequitinhonha and Mucuri Valleys, Diamantina, Minas Gerais, Brazil; School of Medicine, Federal University of Jequitinhonha and Mucuri Valleys, Diamantina, Minas Gerais, Brazil.
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Reddy MK, Murthy PM, Elsayed SM, Hussain MM, Robert CA. Caffeine as a Neoadjuvant Therapy in Parathyroid Adenomas: A Narrative Review. Cureus 2020; 12:e9958. [PMID: 32983662 PMCID: PMC7510512 DOI: 10.7759/cureus.9958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 08/23/2020] [Indexed: 11/05/2022] Open
Abstract
Caffeine is the most used central nervous system stimulant drug to date. Many studies have shown the association of caffeine with bone remodeling, urinary calcium excretion, kidney stones, acid peptic disease, and the development of cancer. However, there has been very little research exploring the association between caffeine use and parathyroid gland disorders. We shed light on the possible connection between caffeine and parathyroid adenomas, as suggested in the literature.
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Affiliation(s)
- Mithun K Reddy
- Medicine, Vydehi Institute of Medical Sciences and Research Centre, Bangalore, IND
| | - Pooja M Murthy
- Medicine, Vydehi Institute of Medical Sciences and Research Centre, Bangalore, IND
| | - Sarah M Elsayed
- Medicine, Faculty of Medicine, Ain Shams University, Cairo, EGY
| | - Mir Mehdi Hussain
- Medicine, Vydehi Institute of Medical Sciences and Research Centre, Bangalore, IND
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Lu M, Kjellin H, Fotouhi O, Lee L, Nilsson IL, Haglund F, Höög A, Lehtiö J, Larsson C. Molecular profiles of oxyphilic and chief cell parathyroid adenoma. Mol Cell Endocrinol 2018; 470:84-95. [PMID: 28986304 DOI: 10.1016/j.mce.2017.10.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2017] [Revised: 08/29/2017] [Accepted: 10/02/2017] [Indexed: 11/29/2022]
Abstract
CONTEXT Parathyroid adenomas may be composed of chief cells (conventional or water-clear), oxyphilic cells or a mixture of both cells. The molecular background is rarely studied. OBJECTIVE To molecularly characterize parathyroid adenomas of different cell type composition. DESIGN Chief and oxyphilic cell adenomas were compared in a cohort of 664 sporadic cases. Extensive analyses of parathyroid tissues were performed in subgroup. Gene expressions of known parathyroid-related genes were quantified by qRT-PCR. Protein expression profiles determined by liquid chromatography - tandem mass spectrometry (LC-MS/MS) were compared between each type of parathyroid adenomas. Selected proteins were analysed by Western blot and immunohistochemistry. RESULTS Patients with oxyphilic cell adenoma were found to be older at the time of operation than chief cell adenoma cases but did not differ in gender, serum calcium or tumor weight. The gene expression of CASR, VDR, FGFR1, CYP27B1, CYP24A1, PTHLH, GCM2, NDUFA13, CDKN1B, MEN1 and CNND1 did not differ between the groups. VDR protein levels were weaker in oxyphilic adenomas. The proteomic studies identified a set of novel dysregulated proteins of interest such as nuclear receptor subfamily 2 group C member 2 (TR4), LIM domain only protein 3 (LMO3) and calcium-binding protein B (S100B). LMO3 and S100B showed higher expression in oxyphilic adenoma and may be involve in parathyroid tumorgenesis through the p53 pathway. TR4 showed different subcellular localisation between adenoma and normal rim. CONCLUSION Chief and oxyphilic cell parathyroid adenomas have partly overlapping but also distinct molecular profiles. The calmodulin-eEF2K, TR4 and p53 pathways may be involved in the tumor development.
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Affiliation(s)
- Ming Lu
- Departments of Oncology-Pathology, Karolinska Institutet, 171 76 Stockholm, Sweden; Cancer Centre Karolinska, CCK, Karolinska University Hospital, 171 76 Stockholm, Sweden.
| | - Hanna Kjellin
- Department of Molecular Medicine and Surgery, Karolinska Institutet, 171 76 Stockholm, Sweden; Science for Life Laboratory, Karolinska Institutet, 171 65 Solna, Sweden
| | - Omid Fotouhi
- Departments of Oncology-Pathology, Karolinska Institutet, 171 76 Stockholm, Sweden; Cancer Centre Karolinska, CCK, Karolinska University Hospital, 171 76 Stockholm, Sweden
| | - Linkiat Lee
- Departments of Oncology-Pathology, Karolinska Institutet, 171 76 Stockholm, Sweden; Cancer Centre Karolinska, CCK, Karolinska University Hospital, 171 76 Stockholm, Sweden
| | - Inga-Lena Nilsson
- Department of Molecular Medicine and Surgery, Karolinska Institutet, 171 76 Stockholm, Sweden
| | - Felix Haglund
- Departments of Oncology-Pathology, Karolinska Institutet, 171 76 Stockholm, Sweden; Cancer Centre Karolinska, CCK, Karolinska University Hospital, 171 76 Stockholm, Sweden
| | - Anders Höög
- Departments of Oncology-Pathology, Karolinska Institutet, 171 76 Stockholm, Sweden; Cancer Centre Karolinska, CCK, Karolinska University Hospital, 171 76 Stockholm, Sweden
| | - Janne Lehtiö
- Departments of Oncology-Pathology, Karolinska Institutet, 171 76 Stockholm, Sweden; Science for Life Laboratory, Karolinska Institutet, 171 65 Solna, Sweden
| | - Catharina Larsson
- Departments of Oncology-Pathology, Karolinska Institutet, 171 76 Stockholm, Sweden; Cancer Centre Karolinska, CCK, Karolinska University Hospital, 171 76 Stockholm, Sweden
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Akgül F, Serçelik A, Çetin H, Erten T. Association of parathyroid hormone and vitamin D with untreated hypertension: Is it different in white-coat or sustained hypertension? PLoS One 2017; 12:e0188669. [PMID: 29176783 PMCID: PMC5703558 DOI: 10.1371/journal.pone.0188669] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2017] [Accepted: 11/10/2017] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND Previous reports about the relationship between a high parathyroid hormone (PTH) and low vitamin D levels with blood pressure in different hypertension groups are conflicting. OBJECTIVE We studied serum PTH and vitamin D levels in white-coat (WCHT) and sustained hypertension (SHT) patients who had not been on antihypertensive treatment. We also investigated the association between serum PTH and vitamin D levels with respect to blood pressure in SHT and WCHT patients. METHODS We included 52 SHT patients (54.06 ± 9.2 years, 32 newly diagnosed and 20 previously diagnosed with SHT who had not been treated with antihypertensive medication for 3 months or more), 48 WCHT patients (53.64 ± 9.5 years), and 50 normotensive (NT) healthy controls (53.44 ± 8.4 years) in our study. In addition to routine tests, PTH and vitamin D levels were measured. RESULTS Serum PTH levels were significantly higher in SHT patients not taking antihypertensive medications than in WCHT patients and NT controls (p = 0.004). Although PTH levels were higher in WCHT than in NT groups, the difference was not statistically significant. In SHT patients, PTH levels showed a positive correlation with office systolic (r = 0.363, p = 0.008), office diastolic (r = 0.282, p = 0.038), home systolic (r = 0.390, p = 0.004), and home diastolic blood pressures (r = 0.397, p = 0.003). Serum vitamin D levels were similar in SHT, WCHT and NT groups. Vitamin D levels were not associated with blood pressures in the entire study group. Furthermore, no significant relation was found between vitamin D and PTH levels in SHT and WCHT groups. CONCLUSION PTH levels are significantly higher in untreated SHT patients than WCHT patients and NT subjects. However, vitamin D levels are similar in SHT, WCHT and NT groups. There is a significant association between PTH levels and blood pressures suggesting PTH has a role in increase of blood pressure in SHT.
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Affiliation(s)
- Ferit Akgül
- Bülent Ecevit University, Department of Cardiology, Zonguldak, Turkey
- * E-mail:
| | - Alper Serçelik
- Sanko University, Department of Cardiology, Gaziantep, Turkey
| | - Hakan Çetin
- Van Yüzüncü Yıl University, Department of Molecular Biology and Genetics, Van, Turkey
| | - Turgay Erten
- Bülent Ecevit University, Department of Cardiology, Zonguldak, Turkey
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Burnstock G. Purinergic signalling in endocrine organs. Purinergic Signal 2014; 10:189-231. [PMID: 24265070 PMCID: PMC3944044 DOI: 10.1007/s11302-013-9396-x] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Accepted: 10/24/2013] [Indexed: 01/08/2023] Open
Abstract
There is widespread involvement of purinergic signalling in endocrine biology. Pituitary cells express P1, P2X and P2Y receptor subtypes to mediate hormone release. Adenosine 5'-triphosphate (ATP) regulates insulin release in the pancreas and is involved in the secretion of thyroid hormones. ATP plays a major role in the synthesis, storage and release of catecholamines from the adrenal gland. In the ovary purinoceptors mediate gonadotrophin-induced progesterone secretion, while in the testes, both Sertoli and Leydig cells express purinoceptors that mediate secretion of oestradiol and testosterone, respectively. ATP released as a cotransmitter with noradrenaline is involved in activities of the pineal gland and in the neuroendocrine control of the thymus. In the hypothalamus, ATP and adenosine stimulate or modulate the release of luteinising hormone-releasing hormone, as well as arginine-vasopressin and oxytocin. Functionally active P2X and P2Y receptors have been identified on human placental syncytiotrophoblast cells and on neuroendocrine cells in the lung, skin, prostate and intestine. Adipocytes have been recognised recently to have endocrine function involving purinoceptors.
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Affiliation(s)
- Geoffrey Burnstock
- Autonomic Neuroscience Centre, University College Medical School, Rowland Hill Street, London, NW3 2PF, UK,
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