Jose G Grajales-Reyes, MD, PhD
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Clinical Fellow
Biography
José G. Grajales-Reyes, MD, PhD is a physician-scientist, former Chief Resident, and Regional Anesthesiology and Acute Pain Medicine Fellow at Yale School of Medicine whose research explores how the brain coordinates physiological responses to pain, metabolism, inflammation, and disease. By integrating systems neuroscience, neuroimmunology, metabolism, and anesthesiology, his work seeks to define how neural circuits regulate whole-body physiology in health and disease.
Dr. Grajales-Reyes earned his MD and PhD in Neuroscience from Washington University in St. Louis, where he investigated the neural circuits underlying descending pain modulation and contributed to the development of wireless neurotechnologies for interrogating the nervous system. His work has been published in journals including Nature Biotechnology, Nature Communications, Nature Protocols, and Trends in Neurosciences.
At Yale, Dr. Grajales-Reyes conducts postdoctoral research in the laboratory of Marc Schneeberger, PhD, where he investigates how metabolic states remodel reward circuitry and neurovascular function using circuit-specific proteomics and systems neuroscience approaches. In parallel, through collaboration with Ruslan Medzhitov, PhD, he studies brain-body communication during systemic inflammation and has contributed to the discovery of a central neural pathway through which the brain can promote survival during inflammatory shock by restoring metabolic homeostasis.
Recognized for excellence in both research and clinical care, Dr. Grajales-Reyes is committed to bridging mechanistic neuroscience with anesthesiology. His long-term goal is to establish an independent physician-scientist program that translates discoveries in brain-body communication into innovative therapies for chronic pain, metabolic disease, addiction, and critical illness.
Departments & Organizations
Education & Training
- Regional Anesthesiology and Acute Pain Medicine Fellowship
- Yale - New Haven Hospital (2027)
- Anesthesiology Residency
- Yale - New Haven Hospital (2026)
- PhD
- Washington University School of Medicine, Neuroscience (2022)
- MD
- Washington University School of Medicine, Medicine (2022)
- BS
- University of Puerto Rico - Rio Piedras, Molecular and Cell Biology (2012)
Research
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Overview
Medical Research Interests
ORCID
0000-0002-3861-6842
Research at a Glance
Yale Co-Authors
Publications Timeline
Research Interests
David Meseguer Garcia
Marc Schneeberger Pane, PhD
Marcelle Blessing, MD
Olga Salianski, MD
Publications
2026
Identification of a thermogenic target in the dorsal raphe nucleus for weight management in mice
Moura-Assis A, Plucińska K, Meseguer D, Baleisyte A, Chen B, Pellegrino K, Parolari L, Shaked J, Page K, Barrows D, Carroll T, Grajales-Reyes J, Na D, Rodriguez-Diaz A, Furtado J, Isaza J, Schiffer H, Chen Y, Sun H, Kaushal N, Monenschein H, Barker D, Ortuño M, Renier N, Cohen P, Carlton M, Heintz N, Brice N, Friedman J, Schneeberger M. Identification of a thermogenic target in the dorsal raphe nucleus for weight management in mice. Nature Communications 2026, 17: 1295. PMID: 41530127, PMCID: PMC12868712, DOI: 10.1038/s41467-025-68056-x.Peer-Reviewed Original ResearchCitations
2025
Advances in energy balance & metabolism circuitry
Grajales-Reyes J. Advances in energy balance & metabolism circuitry. Advances In Genetics 2025, 113: 1-28. PMID: 40409794, DOI: 10.1016/bs.adgen.2025.02.003.ChaptersCitations
2024
Burning Question: How Does Our Brain Process Positive and Negative Cues Associated with Thermosensation?
Grajales-Reyes J, Chen B, Meseguer D, Schneeberger M. Burning Question: How Does Our Brain Process Positive and Negative Cues Associated with Thermosensation? Physiology 2024, 39: 218-230. PMID: 38536114, PMCID: PMC11368520, DOI: 10.1152/physiol.00034.2023.Peer-Reviewed Reviews, Practice Guidelines, Standards, and Consensus StatementsCitationsAltmetric
2023
Cell type-specific dissection of sensory pathways involved in descending modulation
Nguyen E, Grajales-Reyes J, Gereau R, Ross S. Cell type-specific dissection of sensory pathways involved in descending modulation. Trends In Neurosciences 2023, 46: 539-550. PMID: 37164868, PMCID: PMC10836406, DOI: 10.1016/j.tins.2023.04.002.Peer-Reviewed Reviews, Practice Guidelines, Standards, and Consensus StatementsCitationsAltmetric
2022
Author Correction: Wireless multilateral devices for optogenetic studies of individual and social behaviors
Yang Y, Wu M, Vázquez-Guardado A, Wegener A, Grajales-Reyes J, Deng Y, Wang T, Avila R, Moreno J, Minkowicz S, Dumrongprechachan V, Lee J, Zhang S, Legaria A, Ma Y, Mehta S, Franklin D, Hartman L, Bai W, Han M, Zhao H, Lu W, Yu Y, Sheng X, Banks A, Yu X, Donaldson Z, Gereau R, Good C, Xie Z, Huang Y, Kozorovitskiy Y, Rogers J. Author Correction: Wireless multilateral devices for optogenetic studies of individual and social behaviors. Nature Neuroscience 2022, 25: 1394-1394. PMID: 36071281, DOI: 10.1038/s41593-022-01175-6.Commentaries, Editorials and LettersCitationsAltmetric
2021
Cellular, circuit and transcriptional framework for modulation of itch in the central amygdala
Samineni V, Grajales-Reyes J, Grajales-Reyes G, Tycksen E, Copits B, Pedersen C, Ankudey E, Sackey J, Sewell S, Bruchas M, Gereau R. Cellular, circuit and transcriptional framework for modulation of itch in the central amygdala. ELife 2021, 10: e68130. PMID: 34032210, PMCID: PMC8172243, DOI: 10.7554/elife.68130.Peer-Reviewed Original ResearchCitationsAltmetricSurgical implantation of wireless, battery-free optoelectronic epidural implants for optogenetic manipulation of spinal cord circuits in mice
Grajales-Reyes J, Copits B, Lie F, Yu Y, Avila R, Vogt S, Huang Y, Banks A, Rogers J, Gereau R, Golden J. Surgical implantation of wireless, battery-free optoelectronic epidural implants for optogenetic manipulation of spinal cord circuits in mice. Nature Protocols 2021, 16: 3072-3088. PMID: 34031611, PMCID: PMC9273129, DOI: 10.1038/s41596-021-00532-2.Peer-Reviewed Original ResearchCitationsAltmetricWireless multilateral devices for optogenetic studies of individual and social behaviors
Yang Y, Wu M, Vázquez-Guardado A, Wegener A, Grajales-Reyes J, Deng Y, Wang T, Avila R, Moreno J, Minkowicz S, Dumrongprechachan V, Lee J, Zhang S, Legaria A, Ma Y, Mehta S, Franklin D, Hartman L, Bai W, Han M, Zhao H, Lu W, Yu Y, Sheng X, Banks A, Yu X, Donaldson Z, Gereau R, Good C, Xie Z, Huang Y, Kozorovitskiy Y, Rogers J. Wireless multilateral devices for optogenetic studies of individual and social behaviors. Nature Neuroscience 2021, 24: 1035-1045. PMID: 33972800, PMCID: PMC8694284, DOI: 10.1038/s41593-021-00849-x.Peer-Reviewed Original ResearchCitationsAltmetric
2020
A Potential Role for Stress-Induced Microbial Alterations in IgA-Associated Irritable Bowel Syndrome with Diarrhea
Rengarajan S, Knoop K, Rengarajan A, Chai J, Grajales-Reyes J, Samineni V, Russler-Germain E, Ranganathan P, Fasano A, Sayuk G, Gereau R, Kau A, Knights D, Kashyap P, Ciorba M, Newberry R, Hsieh C. A Potential Role for Stress-Induced Microbial Alterations in IgA-Associated Irritable Bowel Syndrome with Diarrhea. Cell Reports Medicine 2020, 1: 100124. PMID: 33196055, PMCID: PMC7659537, DOI: 10.1016/j.xcrm.2020.100124.Peer-Reviewed Original ResearchCitationsAltmetric
2019
Cell type-specific modulation of sensory and affective components of itch in the periaqueductal gray
Samineni V, Grajales-Reyes J, Sundaram S, Yoo J, Gereau R. Cell type-specific modulation of sensory and affective components of itch in the periaqueductal gray. Nature Communications 2019, 10: 4356. PMID: 31554789, PMCID: PMC6761157, DOI: 10.1038/s41467-019-12316-0.Peer-Reviewed Original ResearchCitationsAltmetric
Academic Achievements & Community Involvement
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Featured
honor Abraham L.Z. Mandel Award for Excellence in Resident Performance
06/13/2026Hospital System AwardYale Anesthesiology DepartmentDetailsUnited States
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