Lights, fiber, action! A primer on in vivo fiber photometry

EH Simpson, T Akam, T Patriarchi, M Blanco-Pozo… - Neuron, 2024 - cell.com
Fiber photometry is a key technique for characterizing brain-behavior relationships in vivo.
Initially, it was primarily used to report calcium dynamics as a proxy for neural activity via …

Dissociable hindbrain GLP1R circuits for satiety and aversion

KP Huang, AA Acosta, MY Ghidewon, AD McKnight… - Nature, 2024 - nature.com
The most successful obesity therapeutics, glucagon-like peptide-1 receptor (GLP1R)
agonists, cause aversive responses such as nausea and vomiting,, effects that may …

Reciprocal activity of AgRP and POMC neurons governs coordinated control of feeding and metabolism

AJ De Solis, A Del Río-Martín, J Radermacher… - Nature …, 2024 - nature.com
Abstract Agouti-related peptide (AgRP)-expressing and proopiomelanocortin (POMC)-
expressing neurons reciprocally regulate food intake. Here, we combine non-interacting …

A human obesity-associated MC4R mutation with defective Gq/11α signaling leads to hyperphagia in mice

PJ Metzger, A Zhang, BA Carlson, H Sun, Z Cui… - The Journal of Clinical …, 2024 - jci.org
Melanocortin 4 receptor (MC4R) mutations are the most common cause of human
monogenic obesity and are associated with hyperphagia and increased linear growth. While …

Transient cAMP production drives rapid and sustained spiking in brainstem parabrachial neurons to suppress feeding

JS Alvarado, A Lutas, JC Madara, J Isaac, C Lommer… - Neuron, 2024 - cell.com
Brief stimuli can trigger longer-lasting brain states. G-protein-coupled receptors (GPCRs)
could help sustain such states by coupling slow-timescale molecular signals to neuronal …

Lateral olivocochlear neurons modulate cochlear responses to noise exposure

AA Sitko, MM Frank, GE Romero, M Hunt… - Proceedings of the …, 2025 - pnas.org
The sense of hearing originates in the cochlea, which detects sounds across dynamic
sensory environments. Like other peripheral organs, the cochlea is subjected to …

Oleanolic acid inhibits appetite through the TGR5/cAMP signaling pathway

S Liu, X Chen, D Chen, B Yu, P Zheng, Y Luo… - The Journal of …, 2025 - Elsevier
Inhibition of appetite is an effective approach to fight obesity. Recently, bile acids have been
reported to suppress appetite and alleviate obesity via the Takeda G protein-coupled …

Endogenous opioid dynamics in the dorsal striatum sculpt neural activity to control goal-directed action

R Gowrishankar, M Hjort, AJ Elerding, SE Shirley… - bioRxiv, 2024 - biorxiv.org
Endogenous neuropeptides are uniquely poised to regulate neuronal activity and behavior
across multiple timescales. Traditional studies ascribing neuropeptide contributions to …

TUBEROMAMMILLARY NUCLEUS HISTAMINERGIC NEURONS UNDERLIE SUSCEPTIBILITY AND RESILIENCE TO PSYCHOSOCIAL STRESS

A Costa, G Provensi, M Passani - IBRO Neuroscience Reports, 2023 - flore.unifi.it
Psychosocial stress is considered a severe pathogenic factor of psychiatric disorders,
characterized by dysfunctions of cognitive, emotional, and social domains. Histaminergic …