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Frelinger AL, Haynes RL, Goldstein RD, Berny-Lang MA, Gerrits AJ, Riehs M, Haas EA, Paunovic B, Mena OJ, Campman SC, Milne GL, Sleeper LA, Kinney HC, Michelson AD. Dysregulation of platelet serotonin, 14-3-3, and GPIX in sudden infant death syndrome. Sci Rep 2024; 14:11092. [PMID: 38750089 PMCID: PMC11096399 DOI: 10.1038/s41598-024-61949-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Accepted: 05/12/2024] [Indexed: 05/18/2024] Open
Abstract
Sudden infant death syndrome (SIDS) is the leading cause of post-neonatal infant mortality, but the underlying cause(s) are unclear. A subset of SIDS infants has abnormalities in the neurotransmitter, serotonin (5-hydroxytryptamine [5-HT]) and the adaptor molecule, 14-3-3 pathways in regions of the brain involved in gasping, response to hypoxia, and arousal. To evaluate our hypothesis that SIDS is, at least in part, a multi-organ dysregulation of 5-HT, we examined whether blood platelets, which have 5-HT and 14-3-3 signaling pathways similar to brain neurons, are abnormal in SIDS. We also studied platelet surface glycoprotein IX (GPIX), a cell adhesion receptor which is physically linked to 14-3-3. In infants dying of SIDS compared to infants dying of known causes, we found significantly higher intra-platelet 5-HT and 14-3-3 and lower platelet surface GPIX. Serum and plasma 5-HT were also elevated in SIDS compared to controls. The presence in SIDS of both platelet and brainstem 5-HT and 14-3-3 abnormalities suggests a global dysregulation of these pathways and the potential for platelets to be used as a model system to study 5-HT and 14-3-3 interactions in SIDS. Platelet and serum biomarkers may aid in the forensic determination of SIDS and have the potential to be predictive of SIDS risk in living infants.
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Affiliation(s)
- Andrew L Frelinger
- Center for Platelet Research Studies, Dana-Farber/Boston Children's Cancer and Blood Disorders Center, Harvard Medical School, Boston, MA, USA.
- Center for Platelet Research Studies, Dana-Farber/Boston Children's Cancer and Blood Disorders Center, Boston Children's Hospital, Karp 08212, 300 Longwood Avenue, Boston, MA, 02115-5737, USA.
| | - Robin L Haynes
- Department of Pathology, Boston Children's Hospital and Harvard Medical School, Boston, MA, USA
| | - Richard D Goldstein
- Robert's Program on Sudden Unexpected Death in Pediatrics, Division of General Pediatrics, Department of Pediatrics, Boston Children's Hospital and Harvard Medical School, Boston, USA
| | - Michelle A Berny-Lang
- Center for Platelet Research Studies, Dana-Farber/Boston Children's Cancer and Blood Disorders Center, Harvard Medical School, Boston, MA, USA
| | - Anja J Gerrits
- Center for Platelet Research Studies, Dana-Farber/Boston Children's Cancer and Blood Disorders Center, Harvard Medical School, Boston, MA, USA
| | - Molly Riehs
- Department of Pathology, Boston Children's Hospital and Harvard Medical School, Boston, MA, USA
| | | | | | - Othon J Mena
- County of Ventura Medical Examiner's Office, Ventura, CA, USA
| | - Steven C Campman
- County of San Diego Medical Examiner's Office, San Diego, CA, USA
| | - Ginger L Milne
- Division of Clinical Pharmacology, Vanderbilt University, Nashville, TN, USA
| | - Lynn A Sleeper
- Department of Cardiology, Boston Children's Hospital, Boston, MA, USA
- Department of Pediatrics, Harvard Medical School, Boston, MA, USA
| | - Hannah C Kinney
- Department of Pathology, Boston Children's Hospital and Harvard Medical School, Boston, MA, USA
| | - Alan D Michelson
- Center for Platelet Research Studies, Dana-Farber/Boston Children's Cancer and Blood Disorders Center, Harvard Medical School, Boston, MA, USA
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Haynes RL, Trachtenberg F, Darnall R, Haas EA, Goldstein RD, Mena OJ, Krous HF, Kinney HC. Altered 5-HT2A/C receptor binding in the medulla oblongata in the sudden infant death syndrome (SIDS): Part I. Tissue-based evidence for serotonin receptor signaling abnormalities in cardiorespiratory- and arousal-related circuits. J Neuropathol Exp Neurol 2023; 82:467-482. [PMID: 37226597 PMCID: PMC10209647 DOI: 10.1093/jnen/nlad030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023] Open
Abstract
The sudden infant death syndrome (SIDS), the leading cause of postneonatal infant mortality in the United States, is typically associated with a sleep period. Previously, we showed evidence of serotonergic abnormalities in the medulla (e.g. altered serotonin (5-HT)1A receptor binding), in SIDS cases. In rodents, 5-HT2A/C receptor signaling contributes to arousal and autoresuscitation, protecting brain oxygen status during sleep. Nonetheless, the role of 5-HT2A/C receptors in the pathophysiology of SIDS is unclear. We hypothesize that in SIDS, 5-HT2A/C receptor binding is altered in medullary nuclei that are key for arousal and autoresuscitation. Here, we report altered 5-HT2A/C binding in several key medullary nuclei in SIDS cases (n = 58) compared to controls (n = 12). In some nuclei the reduced 5-HT2A/C and 5-HT1A binding overlapped, suggesting abnormal 5-HT receptor interactions. The data presented here (Part 1) suggest that a subset of SIDS is due in part to abnormal 5-HT2A/C and 5-HT1A signaling across multiple medullary nuclei vital for arousal and autoresuscitation. In Part II to follow, we highlight 8 medullary subnetworks with altered 5-HT receptor binding in SIDS. We propose the existence of an integrative brainstem network that fails to facilitate arousal and/or autoresuscitation in SIDS cases.
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Affiliation(s)
- Robin L Haynes
- CJ Murphy Laboratory for SIDS Research, Department of Pathology, Boston Children’s Hospital and Harvard Medical School, Boston, Massachusetts, USA
- Robert’s Program on Sudden Unexpected Death in Pediatrics, Division of General Pediatrics, Department of Pediatrics, Boston Children’s Hospital, Boston, Massachusetts, USA
| | | | - Ryan Darnall
- CJ Murphy Laboratory for SIDS Research, Department of Pathology, Boston Children’s Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Elisabeth A Haas
- Department of Research, Rady Children’s Hospital, San Diego, California, USA
| | - Richard D Goldstein
- Robert’s Program on Sudden Unexpected Death in Pediatrics, Division of General Pediatrics, Department of Pediatrics, Boston Children’s Hospital, Boston, Massachusetts, USA
- Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA
| | - Othon J Mena
- San Diego County Medical Examiner Office, San Diego, California, USA
| | - Henry F Krous
- University of California, San Diego, San Diego, California, USA
- Rady Children’s Hospital, San Diego, California, USA
| | - Hannah C Kinney
- CJ Murphy Laboratory for SIDS Research, Department of Pathology, Boston Children’s Hospital and Harvard Medical School, Boston, Massachusetts, USA
- Robert’s Program on Sudden Unexpected Death in Pediatrics, Division of General Pediatrics, Department of Pediatrics, Boston Children’s Hospital, Boston, Massachusetts, USA
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